Improvements in Furnaces.
Year: 1899

page_text: Date of Application, 3rd Mar., 1899-Accepted, 17th June, 1899
COMPLETE SPECIFICATION.
Improvements in Furnaces.
I, WILLIAM MCCLAVE, a Citizen of the United States, and resident of Scranton,
in the County of Sackawanna, State of Pennsylvania, and residing at No. 301, 7th
Street, in said City of Scranton, Manufacturer, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement -.
My invention relates to improvements in furnaces and particularly to that class of
furnaces, which are provided with inclined rocking grates for feeding the fuel down
the same, and automatic hoppers for supplying the fuel to the grates, the said furnace
being also preferably constructed with means. for removing ashes by power from the
ash-pit.
It consists in certain novel constructions, combinations and arrangement of parts,
as will be hereinafter fully described and claimed.
In the accompanying drawings,
Fig. 1 represents a vertical longitudinal section through a portion of a furnace con-
structed in accordance with my invention.
Fig. 2 represents a front elevation of the same, parts being broken away.
Fig. 3 represents an enlarged detail sectional view through the hopper.
Fig. 3 Sheet 15 is a fraginentary detail view of a portion of the pusher in the
hopper.
Fig. 3B Sheet 3 is a detail view of the upper end of the screw for adjusting the
hopper front.
Fig. 4 represents a longitudinal vertical section through the feed hopper and show-
ing the gates for adjusting the discharge opening.
Fig. 5 is a detail view showing the means for connecting the power shaft of the
furnace with the main power shaft.
Fig. 6 is an enlarged detail view showing the means for connecting and discon-
necting the two shafts.
Fig. 7 represents a side elevation of the actuating arin for moving the pusher in
the hopper.
Fig. 8 is a detail sectional view through the slides in the pusher operating
arins.
L
Fig. 9 is a front elevation of a portion of the said arm.
Fig. 10 is a perspective view of one of the grate bars, part of the teeth or leaves
thereof being removed.
Fig. 11 represents an enlarged detail sectional view through the upper grate bar and
the lower end of the dead plate.
Fig. 12 is a detail sectional view on the line - of Fig. 11.
'n
Fig. 13 represents a vertical longitudinal section through a portion of a furnace
provided with a grate constructed in accordance with my invention showing the grate
bars as rocked forward when feeding the fuel.
Fig. 14 Sheet 22 is a similar view to Fig. 13 but showing the grate bars rocked to
the rear for cutting out clinkers and ashes.

page_text: Fig. 15 represents an elevation of the rocking frame in which the movable journal
blocks are capable of being moved above the line of uniform movement as well as
below.
Fig. 16 represents a front elevation of the rocking frame employed in actuating
the rocking grate bars, the journal blocks being in their lowered position.
Fig. 17 represents an end elevation of the same.
Fig. 18 is a similar view to Fig. 16 but showing the movable journal blocks
arranged so as to rock the grate bars with a uniform movement.
Fig. 19 represents a detail transverse sectional view through the rocking frame
illustrating the curvature of the bars which carry the movable journal blocks."
Fig. 20 represents a vertical transverse section through the central portion of the
rocking frame.
Fig. 21 represents a horizontal sectional view through the same.
Fig. 22 represents a detail side elevation of one of the movable journal blocks.
Fig. 23 represents a detail horizontal cross section through the same.
Fig. 24 represents a detail sectional view through a portion of the front of the
furnace, showing the means for operating the mechanism carried by the rocking
frame from the outside of the furnace.
Fig. 25 represents a front elevation of a rocking frame showing the manner of
forming the same when the grate bars are operated singly.
Fig. 26 represents another form of rocking frame, the same being adapted to
operate a single grate section instead of two sections as heretofore illustrated.
Fig. 27 Sheet 8 represents a detail view of a connecting bar showing the manner
of attaching the same to the rocking fráme and to the grate bars.
Fig. 28 Sheet 8 represents a modification of the same.
Fig. 29 represents a detail longitudinal section through my improved rocking
grate showing the grate bars rocked forward.
Fig. 30 represents a transverse vertical section through the grate employed in ny
improved furnace looking toward the front thereof and showing the dead plate and
the lower part of the hopper.
Fig. 31 represents a similar view of the grate but showing the grate bars rocked
to the rearward so as to cut out the clinkers and ashes..
Fig. 32 represents a longitudinal sectional view through the grate and a portion of
the furnace showing the manner of connecting the grate and cut out directly with
the yoke upon the operating shaft.
Fig. 33 represents a detail fragmentary view of the grate showing the fuel bearing
surfaces in the same plane and illustrating the spaces between the said surfaces
when the grate is in this position.
Fig. 34 represents a detail front elevation on an enlarged scale of the link or yoke
used to operate the grate bars.
Fig. 35 represents an enlarged detail front elevation of a double link used for
operating the grate sections.
Fig. 36 represents a side elevation of the link used for operating the grate sections.
Fig. 37 represents a detail perspective view of the dead plate, portion of the
sections of the said dead plate being removed to show the supporting structure
beneath the same.
J
Fig. 38 Sheet 17 represents a detail longitudinal section through a portion of the
said dead plate.
Fig. 39 Sheet 17 represents a detail transverse section through the said dead plate
and supporting structure.
Fig. 40 Sheet 21 represents an enlarged detail front elevation of the slide used
for closing the slots in the front of the furnace through which the operating rods
pass.
Fig. 41 represents a detail vertical section through the same.
Fig. 42 represents a detail horizontal section through the slide for sealing the ash-
pit, where the rods pass through the front of the furnace.

page_text: Fig. 43 represents a detail perspective view showing the manner of connecting the
rod which operates the rocking frame to the said frame.
.
Fig. 44 Sheet 16 represents an enlarged side elevation of the mechanism for
producing an intermittent movement in the cut out mechanism at the lower end of
the grate.
Fig. 45 Sheet 16 represents a different way of mounting the sealing like upon the
front of the furnace.
Fig. 46 Sheet 14 represents a front elevation of the said operating means and
showing an indicator in conjunction therewith.
Fig. 47 Sheet 14 is a detail horizontal sectional view of the indicating mechanism
in the furnace front.
Fig. 48 Sheet 23 represents a vertical longitudinal section through a furnace
provided with an ash-pit constructed in accordance with my invention.
Fig. 49 is a front elevation of the lower portion of the furnace front showing the
ash-pit operating mechanism.
Fig. 50 represents an enlarged detail view showing the intermittent actuating
mechanism in side elevation.
Fig. 51 represents a detail vertical section through the same upon the line a-a.
Fig. 52 represents a front elevation of a portion of the said furnace, the ash
removing tunnel being shown in section.
Fig. 53 represents a detail sectional view through the said pusher showing the lugs
for limiting the movement of the scrapers mounted thereon.
Fig. 54 represents a detail vertical section through the ash removing chute or duct
and the pusher moving therein.
Fig. 55 represents a top plan view of the pusher.
Fig. 56 represents a side elevation of the same, a portion of the supporting track
for the same being shown in section.
Fig. 57 represents a detail front elevation of the ash doors and the floor raising
and lowering mechanism.
Fig. 58 represents a detail vertical section through the same.
:
Fig. 59 represents a detail view of the upper part of the hand operated rod
by which the ash removing mechanism is changed from a direct to an intermittent
motion and vice versa:
Fig. 60 is a detail view of the dog for supporting the said hand operated rod in its
upper position.
3
Fig. 61 Sheet 15 is a detail perspective view of a portion of the bridge wall
bearing plate.
:
I in the drawings represents an inclined grate mounted in a furnace of suitable
construction; 2 is a hopper; 3 a main power shaft and 4 a furnace power shaft.
In a furnace constructed in accordance with my invention in which an inclined
grate as I is employed, the fuel is fed to the same from the top of the grate by
means of a hopper as 2. in which I preferably use a pusher as 5 which oscillates upon
a shaft as 6 to which it is pivotally secured. The lower portion of the hopper 2 is
preferably formed with a curved bottom as 7, the said curved bottom extending to
the top of the dead plate 8 at its lower end, and at its upper end to a point about half
way up the front of the hopper. The pusher 5 comprises a main body portion which
is supported at its ends by arms as 9, 9 upon the shaft 6 and at its center by an arm
as 10 secured also to the shaft 6. The shaft 6 finds suitable bearings in the
walls 11, 11 of the hopper and in a central housing as 12. The end walls of the
hopper as illustrated in Fig. 4 are each provided with an inner lining as 13 which
forins an enclosing space in which the arms 9 may swing and prevents the fuel from
obstructing the movement of the said arms. The upper edges of the linings 13
are inclined so as to direct any fuel that might strike the same into the
hopper. The central housing 12 enclosing the arm 10 of the pusher is hollow
as seen in Fig. 4 and protects the said arm 10 from the fuel.
The housing
12 is provided along its upper edge with a dividing ridge portion as 14 which will
part the fuel and throw the same into the hopper upon either side of the housing.

page_text: The body portion of the pusher 5 is preferably constructed with a curved upper
surface and downwardly extending ribbed portions forming recesses upon its under
side. The lower recess as 15 of the said pusher is provided with a series of followers
as 16 which are loosely inserted therein and rest upon the lower curved plate of the
hopper so that in the movement of the said pusher, all fuel upon the curved bottom
of the hopper will be scraped or pushed from the same in front of the said pusher and
cannot get to the rear of the pusher to clog its movement. The followers 16 are pre-
ferably formed in sections preferably rabbeted into each other and placed end to end
in the recesses 15 extending from one end of the pusher to the other, thus forming
broken lines of metal at this point. The pushing edge of the pusher is also provided
with cuts or slits as at 17 forming broken lines of metal upon that edge of the pusher.
This construction permits of the proper expansion and contraction of the metal with-
out causing the parts to bind in their movement. As the pusher moves away from
the grate, the fuel falls in front of it and when the pusher travels downwardly, it
forces the fuel in front of it on to the dead plate and the upper end of the grate. In
using a feed hopper of this kind, I find that it is often desirable to gain direct access
to the top of the grate from the outside of the furnace, especially when it is desired
to insert wood or other materials for starting up a fire upon the grate. In order to
provide for easily accomplishing such an operation, I preferably form the upper
portion of the hopper front of pivoted plates as 18. While one plate 18 might be
formed to extend from end to end of the hopper, yet as seen in Fig. 2 of the drawings,
1 preferably form two plates 18, each one extending half the length of the hopper. It
will be apparent, of course, that I might use three or more plates for making up the
front of the hopper, if desired, without departing from the spirit of my invention.
Each plate 18 is preferably formed with hinges or bearings as 19 at their upper edge
which engage a rod or shaft as 20 from which the said plates are suspended. The
plates are preferably pivoted upon each side of the central housing 12 and the end
walls 11 of the hopper so as to be capable of swinging between the said housing and
end walls. Each of the plates 18 may be constructed of comparatively light inetal
but are preferably strengthened by means of strengthening webs as seen in the draw-
ings. One of the longitudinally arranged strengthening webs as 21 is so located as
to meet the inturned edge 22 of the curved bottom of the hopper, thus forming a
snug joint at this point when the plate is down. The lower end of each plate 18
extends preferably to a point approximately flush with the pushing edge of the
pusher 5 when the said pusher 5 is in its highest position as seen in Fig. of the
drawings, the said plate thus permitting the pusher to recede below its lower end in
order to permit the fuel to fall in front of it. It is desirable to prevent any fuel
getting in between the lower portion of the plates 18 and the upper surface of the
pusher and for this purpose I form a suitable recess as 23 in the under side of the
lower edge of each plate 18 and mount in the said recess a series of followers as 24
placed end to end and preferably rabbeted into each other, so as to extend from one
end of each plate to the other. These followers when the plate 18 is in its lower
position rest directly upon the upper curved surface of the pusher and scrape all fuel
which might rest thereon off of the top of the said pusher. Sufficient space is pro-
vided in the recess 23 to allow the followers 24 a slight movement up and down
therein and thus provide for any contraction or expansion of the metal under the
influence of heat. The recess 23 is extended to one side of its lower opening as at 25
so that the followers which are formed with a projection 26 fitting therein will be pre-
vented from falling out of the said recess when the plate 18 is lifted. Because of
this construction it is necessary to insert the followers in the recesses 23 from the
end of the plate, which can be easily done before the plate is put into position. By
this construction it is not necessary for the lower edges of the plates 18 to come in
contact with the pusher and increase the friction at that point for the followers
being much lighter than the plates are the only weights engaging the top of the
pusher and they are sufficent to seal the joints between the said plates and pusher.
So also because of the followers 16, the pusher may be constructed so as not to engage
the lower curved surface of the hopper, thus reducing friction at this point. In

page_text: order to raise the front plates 18 upon their pivotal points, I provide each with a
lifting screw as 27 which engages a pivoted sleeve as 28 internally screw threaded
and mounted upon suitable projections as 29 upon the hopper front. The upper end
of each screw 27 is pivotally connected by a swivel joint at 30 with standard pro-
jections 31 formed upon the front of each plate 18. An operating wheel as 32 is
preferably secured to the lower end of each screw, whereby it may be rotated. By
rotating the screw 27 each plate 18 can be quickly raised to the desired height, for
forming the necessary opening between it and the curved bottom of the hopper to
permit of sufficient access to the top of the grate. It will be observed that the opening
formed by raising the front plates, thus, will permit access to the grate upon a plane
approximately in line with the top surface of the grate and wood or other fuel can
be inserted and pushed to any point thereon without difficulty.
The lower portion of the rear wall 33 of the hopper is cut away at its lower end, to
form a suitable opening as 34 through which the pusher may discharge the fuel upon
the dead plate. In order that this opening may be sufficienty large to permit easy
access to the top of the dead plate, the said opening is formed larger than I desire
to have it when the pusher is automatically feeding the fuel upon the grate. In
order, therefor, to restrict, this opening to the desired size, when in ordinary use,
I mount sliding gates as 35 upon the outer face of the hopper wall 33. These gates
as illustrated in Fig. 4 of the drawings may consist of plates having their lower edges
provided with slots as 36 forming thus broken lines of metal to the action of heat.
These plates 35 are preferably strengthened by a series of webs as 37 and the said
plates are also formed with bevelled upper and lower edges so as to easily force their
way through the fuel. The plates 35 are preferably two in number, each filling a
space between the central housing 12 and the ends of the hoppers 11, the ends of the
said plates being cut away to some extent to allow for the said housing and end walls.
In order to raise the plates properly and easily, they are connected by means of links 38
with a series of bell crank levers 39 which are pivoted to the wall 33 of the hopper.
A connecting bar as 40 is attached to the upper arms of each of the bell crank
levers 39 so that they all move simultaneously and equal distances. One of the bell
crank levers as 41 is provided with an operating arm or lever as 42 which extends
beyond the end of the hopper 2 and within easy reach of the furnace attendant. The
plates 35 normally occupy their lower position as seen in Fig. 3 of the drawings but
when it is desired to insert material beneath the raised plates 18 directly to the grate,
it is only necessary to take hold of the lever 42 and pull it downwardly in order to raise
the plates 35 and thus completely open the hopper outlet 34. This, it will be seen,
is a quickly operated and effective means for accomplishing this purpose. It will be
noted that when the plates 35 are in their lower position, the orifice left between them
and the top of the dead plate is just sufficient for the pusher to pass under
it, the said pusher when in its lower position being preferably carried a little beyond
the lower edge of the said plates. The furnace shaft 4 which is supported in suitable
bearings upon the furnace front communicates power to the pusher in the hopper by
means of an arm as 43 which is keyed to the said shaft 4 preferably a little to one
side of one end of the hopper. This arm 43 is provided with a slot as 44 in which a
slide as 45 is adapted to move. The slide 45 may be moved in said slot by means of
a screw as 46 engaging a screw threaded sleeve portion as 47 formed upon the said
slide 45. The said screw 46 passes through a bearing as 48 formed upon the lower end
of the arm 43, the said screw being provided at its lower end with a hand operating
wheel as 49 by which it may be rotated. The shaft 6 to which the pusher 5 is
secured extends outside the hopper and carries an arm as 50 which is also slotted and
provided with a slide as 51 which may move in said slot. The slide 51 may be
secured to the slide 45 by means of a pivot pin as 52 which engages suitable bearings
formed in each of the said slides and holds them in pivotal relation with each other.
The pivot pin 52 thus pivotally connects the arm 43 with the arm 50 so that any
movement of the arm 43 is communicated to the arm 50 and by communicating a
rocking movement to the shaft 4 an oscillating movement may be imparted to the
pusher 5 in the hopper. The throw and consequently the extent of movement of the

page_text: said pusher may be regulated by the position of the slides in the slotted arms 43
and 50 and the position of these slides can be changed at will so as to effect the
desired feed by means of the adjusting screw 46.
While the shaft 4 might be connected directly with any suitable source of power,
yet I prefer to connect it with a main power shaft as 3.which may extend along the
fronts of a series or battery of furnaces and be connected up with any or all of the said
furnaces as may be desired. The main power shaft 3 is preferably to the rear of the
hopper in suitable bearings as 53 and extended to any suitable point to receive power
from any source.
In order to connect the shaft 4 with the shaft 3 an arm as 54 is
rigidly secured to the said shaft 3 and a similar arm as 55 is secured to the shaft 4.
A connecting link as 56 joins the two arms 54 and 55 being preferably pivotally
connected to each. In order that the said shafts 3 and 4 may be quickly connected
or disconnected the lower end of the link 56 is preferably provided with means which
can be easily brought into engagement with the arm 55 and disconnected therefrom.
As seen in Fig. 6 of the drawings the arm 55 carries a stud as 57, the projecting
portion 58 of said stud being adapted to engage a circular opening or bearing as 59
formed in the lower end of the link 56. This link can be easily sprung to one side so
as to engage the projection 58 or to be removed therefrom as may be desired. In order
to hold the parts in their joined position, a pivoted clamp as 60 is secured to the
link 56 as at 61, the said clamp being provided with downwardly extending jaws
as 62, 62 which are adapted to embrace the connected ends of the arm 55 and link 56.
In order to prevent any friction between the said clamp 60 and the arm 55, it is
preferably prevented from touching the said arm by forming the stud 57 with a
rounded head as 63 which holds the said clamp away from the arm 55. It will be
readily seen that when it is wished to disconnect the shaft 4 from the shaft 3, that it
will only be necessary to throw the clamp 60 upwardly upon its pivotal point when the
link 56 may he sprung to one side and disengaged from the stud 57. The two shafts
may be connected again as easily by reversing this operation. This construction
would necessitate the rocking of the shaft 3 in order to impart the desired movement
to the shaft 4. If, however, it is desired to rotate the shaft 3, it will be apparent
that the upper end of the connecting link 56 could be secured to the shaft 3 by
means of an eccentric or a crank in order to impart the desired rocking movement to
the shaft 4.
The power shaft 4 in addition to operating the hopper pusher for feeding the fuel
is also connected with the rocking grate barsthrough mechanism which will be herein-
after fully described, and in rocking a grate of this kind it sometimes occurs that
the parts of the device become clogged or caught in some way so that unless there is
an allowance made for such a contingency, harm may be done to the mechanism.
In order to render this impossible I form upon the shaft 4 a clutch device which is of
such a character that under extreme pressure or clogging of the grates or hopper
mechanism, the shaft will be able to stand still until the difficulty was remedied.
One portion of the pressure mechanism as 64 is secured to the portion of the shaft
carrying the arm 55. The other member of the clutch as 65 is splined upon the
remaining portion of the shaft 4 and is held into engagement with the portion 64 by
means of a tension spring as 66. The teeth of the clutch are so made that the shaft
will move as one under ordinary circumstances and the tension of the spring
that it requires such a clogging of the grate and hopper mechanism as to almost
break the same before it will slip. It is so made however, that the clutch members
will slip by one another, rather than permit of a breaking strain being applied and
at the same time will make so much noise as to attract the attendant's attention to
the matter and will continue to make such a noise until the trouble is rectified or
until the link 56 is thrown out of engagement.
such
In using inclined grates in furnaces in connection with stokers to assist in the feed
of the fuel, I find that it is advisable to employ a means for regulating the throw of
"the grate bars so that their movement may be graded from top to bottom with
respect to each other. In feeding fuel down an inclined grate, the fuel moves more
easily when it first reaches the grate because it is comparatively unburnt and loose,

page_text: but as it proceeds down the grate surface, it becomes more compactly held together
and filled with clinkers until at the lower end, especially with some fuels, it is likely
to form a sheet or slab of: solid clinker. For this reason it is far better to have
the grate so constructed that the movement of the feeding bars can be made greater
at the lower end of the grate than at the top. The intermediate portions of the
grate surface should also be constructed so as to give the grate bars a gradually
increasing movement from the top to the bottom to correspond more nearly with
the clinker forming or caking tendency of the flue. A grate of this kind should be
formed also to produce the best result so that it can be caused to operate uniformly
throughout, when first starting a fire or when the feed has been stopped and it is
desired to get new fuel down to the lower portion of the grate again. I have con-
structed my improved grate with a view to accomplishing all these ends and in
addition have so constructed the same that it may be easily operated from the out-
side of the front of the furnace, thus the grate can be adjusted while the furnace is
in use and at any time so as to grade the movement of the grate bars to a greater
or less extent as it may be found desirable. The grate bars are also constructed and
connected up so that they can be rocked backwardly to cut out clinkers and ashes
from the under portion of the fuel when it is found necessary to more thoroughly
break up the clinker. This action may also be graded so as to produce a greater
cut out movement at the bottom than at the top.
While my improved means for rocking the grate may be applied to furnaces
employing a single section or row of grate bars, yet I prefer to use the same with a
grate surface composed of two sections or rows. Of course it will be apparent that
the parts may be so arranged as to operate a greater number of sections if desired.
The carrier bars of the grate 1 are mounted as illustrated in the drawings in the
furnace upon an incline, the lower end of the said carrier bars resting upon the bridge
wall as at 75 and the upper end engaging supports formed upon the front 76 of the
furnace. The rocking grate bars 77 are journalled at their ends in the carrier bars,
the said journals being at a suitable point with respect to the fire bearing surface of
the bar to permit of the same being rocked to give the desired feed. The grate
bars 77 are provided with actuating journals as at 78 which are adapted to be engaged
by any suitable means for rocking the grate bars. In order to produce a graded
movement in the bars from one end to the other it is necessary to rock one or more
of the said bars separately from the others. While each of the bars may be connected
separately and operated independently of each other, yet for ordinary purposes I find
that it is desirable to connect the lower bars by twos, while a greater number of the
top bars may well be joined for producing the desired result. As shown in the
drawings the grate bars 77 77 are preferably joined in twos by means of short
connecting bars as 79, 79. These connecting bars 79 may be pivotally secured to
the journals 78 in any desired manner. The connecting bars 79 are pivotally secured
to the operating rods as 80, said rods extending toward the front of the furnace and
engaging the rocking frame 81. The rods 80 are pivotally connected to the bars 79 so
that they will allow for the movement of the grate bars.
In order to produce a graded movement in the rocking of the grate bars it is
necessary to connect each set of bars in such a manner that the throw of some of the
bars will be more than the others. For this purpose I employ the rocking frame 81,
which is pivoted upon brackets as 82 secured to the inner face of the furnace front 76.
As seen in the drawings the frame 81 is provided with journals as 83, 83 which
engage suitable bearings in the brackets 82 whereby it is pivotally supported in
place. A greater part of the frame 81 extends upwardly from the journals 83. The
frame 81 has been illustrated in the drawings except in Fig. 26 as adapted to rock
the grate bars of two sections of a furnace grate, the two sides or wings of the said
frame being constructed alike. The frame 81 comprises approximately triangular
portious as 84, 84 connected at their inner ends to each other by means of cross bars
as 85, 85. Each of the wings 84 of the frame 81 is provided with vertically arranged
guide bars as 86, 86 which are adapted to support and guide movable journal
blocks 87. The operating rods 80 are connected with the movable journal blocks 87

page_text: It
and because of the comparative movement of the parts, the guide bars 86 are slightly
curved, the concave side being toward the grate. This permits of the adjustment of
the movable blocks 87 upon the said guides 86 without any binding action between
the parts and without changing the throw of the rods in their adjusted positions. The
inner movable bearing 87 is connected with the upper grate bars and therefore
the connecting rod 80 being shorter than the other connecting rods. The inner guide
is constructed with a greater curve than the outer ones to correspond with the lesser
radius of the arc described. The curvature of the guides 86 will only be very slight
and while it is much better to make them curved, yet the grate can be operated if
the said guides were made straight so that I contemplate using them in this way if
it is found desirable, all of which is within the scope of the present invention.
prefer to have the lower bar of each grate section so connected with the rocking
frame 81 that it will always have the normal throw cominunicated by the said frame
and for this purpose the bar 80 which connects the same with the frame is journalled
directly to the outside of the said frame as seen at 88, a movable block not being
used at this point. In order to move the blocks 87 uniformly with relation to each
other and at a corresponding decreasing or diminishing ratio, I mount a pivoted bar
as 89 upon a journal on each of the wings 84 of the frame 81, each of said bars 89
extending toward the central portion of the frame and being connected by means of
links 90 with each of the movable blocks 87. The links 90 are provided with eyes
in their upper ends which engage journals as 91 formed upon the outer faces of the
movable blocks 87. The lower ends of the said links 90 are preferably provided with
journal studs as 92 which engage corresponding apertures formed in the bars 89.
will be apparent that when one of the said journal blocks 87 is moved upon its guide 86
that the other journal blocks 87 will be correspondingly moved upon their guides.
The length of the links 90 and the pivotal points of the bars 89 are so arranged
that when the inner journal blocks 87 are moved to a point upon a level with the
journals 88 that all of the journal blocks 87 will be upon the same line as clearly
illustrated in Fig. 18 of the drawings. When the journal blocks are in this position
they will all be at an equal distance from the axial point of the frame 81 and con-
sequently will all have the same throw when the said frame is rocked
upon its
journals. It will thus transpire that all of the grate bars having the same actuating
movement will be rocked uniformly throughout the length of the grate. When it is
desired to rock the upper portion of the grate surface less than the lower portion the
links 89 are lowered when the movement of the grate bars will be graded from top to
bottom to the extent that may be desired. The movable journal blocks 87 are each
preferably formed of a hollow body portion as 93 which may be put in position upon
the guide 86 when the block 94 is inserted between the sides of the said body portion
and secured in place by means of screw bolts as clearly seen in Figs. 21 and 22 and 23
of the drawings. This holds the said journal blocks movably upon the said guides.
The journals proper are formed as at 95 upon the opposite sides of the said hollow
body portion 93, of the said journal block 87. The journals 91 as heretofore described
are located upon one face of the said body portion. Cotter pins may be employed to
hold the links 90 upon the journals 91 and the studs 92 in the apertures of the
links 89. The journals 95 are preferably two in number upon each movable journal
block, the connecting rods 80 being preferably bifurcated to engage the same as will
be hereinafter more fully described. The inner movable journal blocks 87, however,
are constructed with a single journal as 96 upon one side of its frame in order not to
interfere with means for raising and lowering the said movable journal blocks which
will now be described.
The inner portions of the wings 84, 84 are provided with vertical slots as at 97
which are adapted to accommodate and guide vertically moving racks as 98. These
racks are formed with elongated slots or recesses at their upper ends as at 99 which
engage similar journals as 100 formed upon the sides of the inner movable journal
blocks 87. The journals 100 are preferably provided with anti-friction rings as 101
to produce less friction in the frame 81. The racks 98 mesh with or engage gear
wheels or pinions as 102, 103. The pinion 102, 103 are mounted upon studs

page_text: secured to a cross bar 104 forming a part of the frame 81. The pinion 103 meshes
with an actuating pinion 105 which is secured upon an inner end of an actuating
shaft as 106 extending through the front 76 of the furnace. By turning the shaft 106
the pinion 105 will be caused to communicate movement to the pinions 102, 103.
whereby the racks 98 will be moved up and down in the slots 97 and thus adjust
the positions of the movable journal blocks 87 in the frame 81. As the frame 81
has a rocking movement upon its journals 83 and as the pinion 105 is mounted upon
the stationary shaft, the pinion 103 has a rocking movement with respect to the
said pinion 105. Because of this movement I find it desirable to construct the
pinions 105 and 103 with teeth having their edges curved as clearly shown in
Fig. 24 of the drawings. By this construction a proper shape will be given to the.
teeth so that the pinion 103 may rock with respect to the pinion 105 without binding
or friction. In order that this may be so I find that it is necessary to mount the said
pinions so that their coinciding pitch lines will be upon a line drawn through the
axis of oscillation of the frame 81. By arranging the pinions in this manner, the.
least movement between the same can be secured.
In order to operate the shaft 106 from the outside of the furnace, its outer end
extends through the front 76 and is squared or otherwise adapted to receive an
operating crank or handle as 107, the inner end of the said shaft being supported
inside the furnace front by means of a suitable bracket as 108. The crank or
operating handle is preferably removable from the shaft and is only placed thereon:
when it is desired to operate the mechanism for changing the position of the movable
journal blocks. As seen in Fig. 46 the shaft 106 projects through the furnace front
just below the slide 76ª which closes the slot through which the operating rod for
rocking the frame 81 passes. The slide 76* is constructed as will be hereinafter
described. As seen in Figs. 24 and 47 the shaft may pass through the guide
casing 76b of the slide in order to gain a still broader bearing in the front. In order
to lock the shaft 106 against movement after it has been adjusted, I arrange a latch
lever as 110 upon the front of the furnace, preferably pivoting it to the guide
casing 76b as seen in Fig. 46 the said latch or lever being provided with a
projection or lug as 111 which is adapted to engage corresponding recesses 112
formed upon a wheel as 113 also rigidly secured to the shaft 106 just inside of the
crank or handle 107. When it is desired to move the shaft. 106 the latch
lever 110 may be thrown back out of engagement temporarily with the said
wheel 113. The crank or handle 107 may be then turned to produce the proper'
adjustment of the movable journals when the latch lever can be brought into
engagement with the recesses 112 to lock the parts in their adjusted position.
Inasmuch as all of the mechanism except the portion for operating the same by hand
is inside the furnace, it is desirable to have a suitable indicator to show the party
operating the grate, the exact positions to which the movable journals have been
adjusted. To accomplish this result I secure a pinion as 115 to the shaft 106 outside
the front 76 and pivot the pinion 109 by a tap bolt to the casing 76b so as to mesh
with the said pinion 115, the said pinion 109 meshing with the teeth of a rack 116.
The pinion 109 is of the same size as the pinion 103 which raises and lowers the
movable journals. The rack 116 is mounted to one side of the casing 76b on the
front 76 and carries a graduated plate as 117. The rack and graduated plate have a
movement exactly corresponding with the movement of the racks in the pivoted
frame which raises and lowers the journal blocks so that by looking at the racks, the
precise position of the journal blocks may be known from the outside of the furnace,
The graduations upon the plate 117 are read in connection with an arrow head as 118
formed upon the furnace front. The words "level" and "bottom are placed upon
the said graduated plate so that when the said word "level" is brought opposite the
arrow 118, the journal blocks will all be upon the same horizontal plane and com-
municate a uniform feed to the grate bars. When the word "bottom is brought
opposite the arrow, the journal blocks will be at their lowest position and the grate
bars will have a graduated action from top to bottom. The word "top" is also
"
R

page_text: placed upon the graduated plate above the word "level" so that when the said word
"top" is brought opposite the arrow 118 the journal blocks will all be lifted above
the horizontal plane and there will be a graduated feed with a maximum movement
at the top of the grate.
Of course the parts may be locked at any intermediate point for grading the move-
ment of the grate bars more or less as may be desired.
In order to rock the frame 81 upon its pivotal point a journal is formed as at 120
upon the cross bars of the frame 81. The said journal is adapted to be engaged by
the inner end of an actuating rod as 121. This rod is preferably provided with a
flattened end portion as seen at 122 in Fig. 43 to the opposite sides of which may be
clamped flat angular pieces as 123 having journal bearings as 124 formed therein.
The said journal bearings after being placed over the ends of the journal 120 may be
clamped in place upon the flattened portion 122 of the rod 121 by means of suitable
bolts. The rod 121 extends through the front of the furnace and is secured to an
actuating member 125 of a grate rocking mechanism mounted in the front of the
furnace, said member 125 being secured to the power shaft 4. The construction of
the member 125 and' its operation of the rocking frame will be hereinafter fully
described. Of course it will be noted that the means for rocking the frame 81 can
be regulated to move the said frame to a greater or less extent both to give a greater
feed or to throw the grate bars back for cutting out the clinkers and ashes as will be
clearly described.
In using a rocking grate of this character there may be times when it is desirable
for a short period to communicate an increasing rocking movement to the upper bars
of the grate in addition to the adjustment heretofore described. This may occur for
instance, when the fires have been banked, that is, when the feed to the grate has
been stopped and the grate has been allowed to feed the fuel on the same so as to
permit air to pass above it, at the upper end of the grate, and the feeding of the
grate then stopped, and in starting up the fire again it is desirable to get a sufficient
quantity of fresh fuel upon the upper portion of the grate to fill up the gap formed
in banking. In order to enable the movement of the grate to be so graded that the
upper bars will move faster than the lower ones, I preferably construct the rocking
frame as shown in the drawings, except in Figs. 25 and 26, the wing portions thereof
being extended to greater height near their inner ends than is necessary for a uniform
feed. This permits of the guides 86 being made of sufficient length to raise the
movable journal blocks to a higher point than is necessary for the uniform movement.
Thus, when the parts are actuated so as to raise the movable journal blocks they can
be carried to graduated points above the level of the point of uniform feed. The
inner journal blocks being connected to the upper bars of the furnace, will, of course,
receive a greater throw than the lower bars which are connected to the fixed bearings
in the frame. Of course it will be apparent that these bearings can be moved
to the lower part of the frame in the same manner as heretofore described and
shown for producing the desired uniform or graded movement of the rocking grate
bars.
As seen in Fig. 26 of the drawings, the rocking frame may be adapted to move
only the grate bars of a single grate section. In this instance, the frame 145 may
be constructed with only one wing portion for carrying the movable journal
blocks 146. The frame 145 is pivoted in the same manner as heretofore described
upon the journals 147, and carries the movable journal blocks upon vertical guides 148.
A rack 149 is employed to move the parts but only one pinion as 150 is needed
and as only one set of grate bars are being operated, the pinion 150, of course, would
receive its movement from the pinion 151 in the same manner, as heretofore
described with respect to the pinion 105. When the frame is constructed in this
manner, one of the journals 147 is preferably braced with respect to the rest of the
frame by means of a diagonal brace rod as 152. As seen in this figure also the
rocking frame may if desired be constructed at the top so as not to permit
the journal blocks to go above the uniform feed position.
While any suitable means may be employed for securing the connecting rods to

page_text: the grate bars and to the rocking frame, yet I prefer to construct these rods as illus-
trated in Fig. 27. In this construction the rod is preferably made round and is
provided with an eye as 133, which adapted to engage a stud 134 secured upon
the connecting bars 79. A cotter pin may be employed to hold the eye upon the
said stud. The other end of the rod 80 is preferably screw threaded and engages a
correspondingly screw threaded recess formed in the end of a hooked engaging
piece 135. The said engaging piece 135 is preferably formed with bifurcated hooked
end portions as 136 which are adapted to engage the journals 95 upon each side of
the casings 93. Sometimes it is preferable to make the connecting rods of flat or
rectangular metal in which case the socket formed in the hooked engaging portion 135
is preferably made rectangular to receive the same and a pin as 137 may be
passed through the socket and the end of the rod to hold the same in place as seen
in Fig. 28. The bifurcated hooked end portions 136 are preferably held in place
upon the journals by means of pins or bolts as 138 seen in Fig. 27. In order to
cause all the rods 80 to move almost in the same plane, the connecting bars 79 are
preferably dropped lower and lower toward the top of the grate. Thus as seen in the
drawings the lowest bar 79 is almost straight while the one next in front of it is
dropped lower and those above this are dropped still lower. This produces a more
uniform movement in the connecting rods 80. In order to accommodate the inner
movable journal blocks to the connection of the same with the actuating racks, the
movable journal blocks to which the rod is connected is formed with its journal stud
upon one side only, said stud being made longer than the studs upon the other
journal blocks. In this instance, the connecting rod instead of having a bifurcated
end portion is bent slightly so as to pass to one side of the movable journal block
and carries a single engaging hook for engaging the journal block stud.
pin may be used to hold the said hook in place upon the said stud.
A cotter
As previously intimated the grate bars may be each connected separately with the
operating rocking frame. As illustrated in Fig. 25 in the drawings, the rocking
frame 127 may be so constructed as to accominodate a greater number of movable
journal blocks as 128. For this purpose a corresponding number of guide bars 129
are added to the frame 127 and the journal blocks are all connected to the bars 130 by
means of the links 131. Racks 132 are also employed and operated in the same
manner to raise and lower the movable journal blocks 128 as heretofore described
with respect to the racks 98.
In
In constructing a furnace having an inclined grate the sections of which are
adapted to feed the fuel downwardly, it is advantageous to construct the parts of the
grate so that the moving parts will not overlap one another, in order that the material
composing the parts may not be subjected to an unnecessary amount of heat.
constructing my furnace, I mount the grate bars upon carrier or journal bars as 153.
The upper forward ends of the said journal bars are preferably hook shaped and
adapted to engage supporting brackets as 154 secured to the inner face of the front
of the furnace 76. The rear lower ends of the said journal bars are also preferably
formed with hooked engaging portions which rest upon bearing plates or bars as 155
mounted in the brick work of the bridge wall 75 of the furnace. The upper edges
of the journal bars are provided with a series of journal hearings or boxes as 156
adapted to receive the journals formed upon the ends of the grate bars. While a
furnace may only employ one grate section or row of grate bars as is common in
furnaces employing inclined grates and stokers, yet I prefer to form the grate surface
of two or more grate sections or rows of grate bars. For the purpose of illustration,
I have shown in the drawings, a grate composed of two sections or rows of grate
bars. The journal or carrier bars 153 are thus three in number, two being located
upon the outer edges of the grate surface and one being interposed between the two
rows of grate bars. Grate-bars as 77 having journals as 157 formed upon their ends
are mounted between the journal bars, the said journals resting in the bearings 156
in the upper edges of the said journal bars. By this construction all of the grate
bars are free to rock with respect to the said journal bars. While the grate bars may
be composed of body portions having fixed fingers secured thereto, yet I preferably

page_text: form each of the grate bars of a body portion as 158 having sockets to receive the
stems 159 of fingers or leaves 160. The fingers 160 are arranged so as to form a
close grate surface and the upper edges of the said fingers carry a series of teeth 161
upon each side of the central web of the finger. While these teeth 161 may be
straight in contour, yet I prefer to give them a slightly curved shape as seen in
Figs. 29 and 31 of the drawings. The partitions between the sockets formed in the
body portions of the grate bars, are extended below the lower edge of the said body
portion to form supporting hangers 162 for a continuous succession of journals 78
along the entire length of the lower edge of the grate bar. This, it will be
seen, not only forms a series of journals below the whole length of the
grate bar but adds greatly to the strength of the body portion of the bar
in addition to affording an opportunity of securing the rocking means to the
said bars at any point between the ends thereof. The journals 78 upon the under
edges of the grate bars may be connected up with the rocking frame 81 as heretofore
described and are further adapted to be engaged by means of a rod or bar 164 having
sockets formed in its upper edges as 165 to receive the said journals. The said
bar 164 is provided at its upper and lower ends with journal bearings which
completely surround the journals upon the upper and lower grate bars of the grate
as at 166, 166. This affords a means of supporting the bar 164 in place and holds it
so that the sockets 165 will engage all of the journals 78. It will be seen by this
arrangement and construction that by moving the bar 164 longitudinally that the
grate bars will all be rocked upon their journals simultaneously. The journal bars
are tied together by means of stationary cross bars as 167 which are provided with
dove tailed end portions adapted to engage corresponding portions formed in the
faces of the journal bars. The stationary tie bars 167 are preferably provided upon
their rear and under surfaces with a series of teeth as 168 which present a broken
line of metal surfaces to the support of the fire at that point. The forward face of
the said stationary tie bar 167 is preferably made concaved to permit of the rocking
movement of the lower grate bars. The rear faces of the fingers are also made
concaved to permit of the rocking of the cut out bar mounted to the rear of the same.
The space between the upper grate bar and the front 76 of the furnace is occupied
and covered by a dead plate as 8, the said dead plate being composed of a series of
plates 170, which rest upon and are fastened to a supporting frame or grid 171. The
said supporting frame is secured by its vertical portion 172 to the front plate 76 of
the furnace, the fingers of the said frame or grid extending backwardly and downwardly
to conform to the under surface of the plates 170. Laterally extending supporting
fingers as 173 are also formed upon the said rearwardly extending fingers and serve
as an additional support to the said plates. Strengthening webs 174 are preferably
formed beneath the fingers to give them sufficient strength. The plates 170 are
preferably provided upon their meeting edges with off-sets as 175 adapted to fit into
corresponding off-sets formed upon the next adjoining plate. As seen in Fig. 38
these meeting edges of the plates 170 are preferably arranged immediately over the
rearwardly extending fingers of the supporting frame 171. This construction
operates to practically seal the crevices between the plates so that an under grate
blast would not be able to escape through the said dead plate. In order to prevent
the plates 170 from sliding forward out of place, depending lugs as 176. are formed
upon their under surface which engage the fingers 173. Other lugs as 177 are also
formed upon the under surface of the plates 170 and engage the spaces between the
ends of the fingers 173 so as to prevent any longitudinal movement of the plates 170
with respect to the supporting frame. The said lugs 177 are preferably provided
with apertures which are adapted to receive locking pins as 178 which extend beneath
the fingers 173 and lock the said plates against displacement. In order to close the
space between the lower end of the inclined grate and the bridge wall and to provide
a means for cutting out clinkers and ashes at that point, I mount oscillating or
rocking cut out bars as 179, the said bars being journalled at their ends in the
journal bars 153 in the same manner as the grate bars. The cut out bars 179 are
preferably formed in a similar manner as the grate bars 77, that is, they are formed of

page_text: a body portion having sockets to receive the shanks of fingers or leaves 180. The
leaves 180 are formed in an approximately S-shape in side elevation, the rear upper
surface of the said cut out bars having a convex upper surface adapted to fit, when
rocked, the under surface of the bridge wall at that point and the rear surface of the
connecting bar 167. The forward portions of the upper edges of the fingers 180 of
the cut out bar are provided with a depressed or concaved portion forming a depression
into which the ashes and clinkers may drop when the said cut out bar is rocked to
the position shown in Fig. 29 of the drawings. The entire upper edges of the
fingers 180 are provided with teeth as 181 similar to the teeth upon the grate
bars.
In order to give a reciprocating movement to the bar 164 and a rocking movement
to the cut out 180 I mount the power rock shaft 4 in suitable bearings as 182 upon
the front 76 of the furnace. This shaft 4 is adapted to be rocked by any suitable
means not shown in the drawings. A member as 125 is attached to the shaft 4 which
extends upwardly and preferably at a point about midway of the front of the furnace.
This member 125 is preferably made in the form of a yoke or link as shown in the
drawings, said member having actuating arm portions, which extend upwardly and
downwardly from the said shaft. In order to secure the member 125, when constructed
in the form of a yoke or link readily in place in the said shaft, it is formed with shaft
sections as 184 upon each side, the said sections having bolting flanges as 185 formed
upon the ends thereof. These bolting flanges meet corresponding bolting flanges 186,
186 formed upon the shaft 4 and are bolted thereto as clearly seen in the drawings,
thus making the link and shaft practically one structure. A journal 187 is mounted
in the said link 125 and is provided at its ends with shoes 188 which fit and partially
enclose the sides of the link, the whole structure forming a slide to move in the said
link.
The journal 187 preferably consists of a rod or shaft having screw threaded end
portions as 189, 189. The threads are right and left with respect to each other and
engage threaded recesses in the shoes 188. An enlargement as 190 is formned upon
said journal 187 the said enlargement having pin holes as 191 into which a pin or
lever as 192 may be inserted to operate the said journal or shaft 187. In order to
insert the journal with its shoes in place readily in the member 125, the shoes are
formed with removable flanges 193 which may be bolted in place after the shoes have
been placed in the member 125. It will be apparent that by turning the journal in
one direction, the shoes will be released from their pressure against the sides of the
member 125 and the journal can be moved to any point within the said link. By
again turning the journal 187, the shoes can be clamped against the sides of the link
or member 125 and thus hold the journal 187 in its adjusted position. A connecting
link or rod as 121 engages the journal 187 at one end and extends through the
front 76 of the furnace and may be secured to the rocking frame 81 or as seen in
Figs. 29, and 31 of the drawings, it may be attached to an arm 183 secured to a rock
shaft 194. The end of the link 121 which engages the journal 187 is preferably
formed with an open bifurcated hook as 195 which rests upon the said journal 187 on
each side of the enlargement 190 and moves therewith. The rock shaft 194 is
mounted upon bearings secured to the inner face of the front 76 of the
furnace preferably, the said rock shaft carrying also near its outer ends,
arms or levers 196. The arm 183 is preferably located upon the central
line of the furnace and immediately beneath the middle journal bar 153 as seen in
Fig. 30 and is shorter than the levers 196. The levers 196 are arranged upon either
side of the lever 183 and are connected by means of rods or links 197 with eye
bolts 198, the ends of the said rods 197 being preferably screw threaded to
engage corresponding screw threaded holes or openings in the said eye-bolts.
the rock shaft 4 is actuated, it will cause the rod 121 to vibrate the rock shaft 194
and the said shaft 194 will communicate its motion through the arms 196, and
the rods 197, to the bars 164, thereby causing the said bars to be reciprocated
longitudinally and thus rock the grate bars. It will be apparent that by regulat-
ing the throw of the rock shaft that the movement of the grate bars can
As

page_text: be regulated as may be desired. I find that it is preferable to rock the grate bars
so that their forward edges will drop only a short distance and rise again when it
is desired to feed the fuel gradually down the grate. When accomplishing this
movement, the journal 187 is preferably so clamped in the link 125, that it will
give only a slight movement to the parts and for this purpose it is moved to and
clamped at a point slightly above the center of the rock shaft 4 as clearly seen in
the drawings. Sometimes it is desirable to cut out the entire portion of the fire
composed largely of ashes and clinkers and drop the same directly into the ash-pit.
For this purpose the journal 187 may be released and dropped to the lower part of
the link 125 as seen in Fig. 31 of the drawings. This draws the link 121 forward
to such an extent that it rocks the upper edges of the grate bars rearwardly and
forms wide spaces between the said edges of the grate, as will clearly appear in
the said Fig. 31. This permits the ash and clinker to drop upon the body portion
of the grate bars.. When the shaft 4 rocks the bars will be rocked forward again, so
as to permit the ash and clinker to drop into the ash-pit. This cut out action may
be repeated two or three times if desired, in order to thoroughly cut out the clinkers or
if it is desired to dump the whole fire quickly, it may be continued several times,
thus rapidly affecting this purpose. It is obvious that the extent of the cut out
movement of the grate bars may be regulated by moving the journal in the link or
yoke at a greater or less distance below the center of the rock shaft. It will also be
observed that with my construction and arrangement of a yoke, link or member
which extends above and below the power rock shaft and a member which is adjust-
able in or on the yoke, link or member, that after the grate bars have been rocked
to a cut out position, and are then rocked in an opposite direction they will return to
the plane of the feed movement and not below the same, which result is very im-
portant and could not be accomplished with power ineans but for the adjustability of
the slide member to which the rod or rods attached directly or indirectly to the grate
bars, are connected. If power mechanical means for operating the bars were em-
ployed and the grate bar connecting means was not adjustable, it is obvious that the
grate bars would be rocked as far below the plane of feed movement as above, a result
which is not desired in a furnace of this character.
An important feature of my grate is the arranging of the grate bars so that the
upper fuel surface of each grate bar occupies less than the space between two adjoining
bars when the fuel surfaces of the grate bars are approximately in the same inclined
plane so as not to overlap either of the said adjoining bars as is common in inclined
grates heretofore used. When rocking the grate for producing the ordinary feed of
the fuel, the grate bars preferably in their highest. movement, occupy a position as
shown in Fig. 1 of the drawings, in which the front edge of each grate bar is practically
in a vertical line with the rear edge of the bar in front of it. The bars however, may
be rocked so that in their highest movement their surfaces are practically on the same
inclined plane. The carrier or journal bars 153 are preferably made with the upper
edge conforming to the general contour of the grate bars when in their upper position
as will clearly appear from the drawings.
The cut out bar 179 at the lower end of the grate forms an important feature of my
invention and the means for rocking the same in connection with its shape contribute
In order to cut out the ashes from
two useful and important functions of the device.
the bottom of the grate, it will be evident that it is necessary to rock the cut out
bar 179 considerably further than it is necessary to rock the grate bars for the feeding
motion. The cut out bar is connected by means of a link or rod 199 with a lever or
arm 200 pivotally mounted to the inner face of the front 76. The said arm 200 is
also connected by means of a link or rod 201 with an arm 202 secured to the rock
shaft 4 outside the front of the furnace. The arın 202 is made of sufficient length to
impart the necessary movement to the connecting links for rocking the cut out bar 179
sufficiently to affect the cutting and discharge of clinkers and ashes from the lower end
of the grate. The rod or link 201 is provided with an open bearing as 203 which is
adapted to engage a wrist pin or journal 204 secured in the arm 202. This permits
of the rod 201 being disengaged from the arm 202 by raising the rod or link 201.

page_text: The end of the rod 201 is extended a short distance beyond the open bearing 203 and
is slightly curved so as not to strike the wrist pin 204 as the arın 202 swings back
and forth. It is preferable not to rock the cut out bar 179 continually, but to allow
it periods of rest and when the clinker and ash have formed and begun to gather at
the lower end of the grate, to operate the cut out to remove the same.
This enables
me to make a full and positive cut out or nearly so, of the clinker which forms
upon the grate surface and to make a rocking movement of greater extent than
could be used if the bar was rocked continually. In order to accomplish this inter-
mittent operation of the rocking cut out, I mount a ratchet disc or wheel as 205
upon the front 76 of the furnace, exteriorly thereof, and I also secure a pawl as 206
to rock shaft 4 by pivoting the same to a lug or projection as 207 secured to said
shaft. This arm is provided with an elongated slot 207 in which the pivot bolt of
the pawl may be adjusted to different distances from the axis of the shaft 4. The
lower end of the pawl 206 is provided with a hooked engaging portion as 208 which
rests upon the periphery of the ratchet wheel 205. Upon one side of the ratchet 205
is formed a cam projection as 209, the said cam projection having a depressed portion
as at 210. An arın 211 is pivoted to the front of the furnace as at 212 and carries at
its outer end a roller as 213 which engages the periphery of the cam 209. The
roller 213 preferably runs in a groove formed upon the periphery of the cain 209 so.
as to always be kept in engagement therewith. The arm 211 carries a spring arm
as 214 which is provided with a grooved roller or trolley wheel as 215, the said
grooved roller engaging the under side of the rod 201 as clearly seen in Fig. 44 of
the drawings. It will be evident from this construction, that as the shaft 4 is rocked,
that the pawl 206 will be carried forward so as to engage one of the teeth of the
ratchet wheel 205 and pull it around upon its pivotal point. The continual rocking
of the shaft 4 will thus operate to rotate the ratchet wheel 205 by means of a step by
step movement. It will be apparent that by adjusting the pivot bolt of the pawl, at
different distances from the shaft 4, that the pawl can be caused to engage two or
more teeth of the ratchet wheel 205 at a time, and thus render the intermittent
operation of the cut out more frequent.
When the roller 213 engages the depressed portion 210, of the cam 209, the
lever 201 will be allowed to engage the pin 204 and cut out 179 will be rocked
to cut out the ashes at the bottom of the grate. When the roller 213 leaves
the depression 210 and rides up upon the higher portion of the cam 209, the
spring arm 214 will lift the arm 201 out of engagement with the pin 204 and
permit the arm 202 to vibrate without affecting the cut out mechanism. While
the operation of the ratchet wheel 205 will be affected as above described, yet it
may be desirable to employ some means of preventing the possibility of the
ratchet wheel 205 turning backwardly. For this purpose may mount a pawl
or dog as 216 upon the front end of the furnace in such a nanner as to engage
the teeth of the ratchet 205 and prevent the said ratchet wheel from moving in
a reverse direction. It will be apparent that by means of the curved extended
end portion of the lever 201, that when the said lever is dropped upon
the pin 204, the said pin can slide upon the under side of the rod. until
it finds the bearing 203 when it will readily engage the same to operate
the cut out. It will be noted that by the shape of the cut out bar 179
when it is rocked in its forward position, the rear convexed surface thereof will
bridge the space between the stationary tie bar at the base of the grate and the
bridge wall. When it is rocked in the other direction, the convexed surface of
the said cut out will recede beneath the overhanging portion of the bridge wall
and the concaved surface of the said bar will be presented to the ashes and
clinkers which may drop therein. When the bar is again rocked into its forward
position, the ashes thus cut out will be free to drop into the ash-pit. An important
feature of this part of the device is the arrangement of the said bar so that when it
rocks to the rear, by the time the rear edge of the concaved portion reaches the
upper surface of the stationary tie bar and begins to permit the ashes to drop
through that the front edge of the said concaved portion will be sufficiently high to
.

page_text: prevent the ashes running through, while the said cut out bar is being turned to
receive its full charge of ashes. This practically precludes the possibility of any run
of ashes or burning fuel through the space between the stationary tie bar and the
bridge wall. While the drawings show the cut out bar when in its normal position
as having its convex surface forming the fire surface, yet it will be apparent that by
adjusting the lever 201 with respect to the rock shaft 4, the concaved surface of the
said cut out bar may be normally upward to form the fuel supporting surface. It
will be seen from the description that the cut out bar will not be operated continuously
but that there will be quite an interval between the oscillations of the said cut out
bar, the length of the said period being regulated by the length of the high portion
of the periphery of the cam 209.
In a grate of this character when it is desired to use an under grate blast, it is
necessary to seal the ash-pit as far as possible and for this purpose I have constructed
a means for permitting of the movement of the operating rods which pass through
the front of the furnace without allowing the draft to escape at that point. As seen
in the Figs. 40 and 41, 42 and 45 of the drawings, the rods are adapted to pass
through slots as 217 in the front of the furnace. Opposite the slots 217 on the
outer face of the front of the furnace, are secured plates as 218, 219, the said
plate 219 having a recess formed therein as at 220 to receive a slide as 76ª. A slot
as 222 is formed through the plates 218, 219 which coincides with the slot 217 in
the front of the furnace. This slot is made of sufficient length to permit of the full
movement of the rod which passes through the same. In order to completely close
the said slot and yet permit of the movement of the slide rod, the slide 76ª is
provided with an opening as 223, which surrounds the operating rod so that the slide
is carried up and down by the movement of the said rod. The edges of the aperture
or opening 223 are preferably bevelled or rounded as shown in Figs. 41 and 45 so as
to permit of a slight rocking movement of the rod, which passes through it without
leaving any appreciable space between the parts. It can readily be seen that by this
construction, the slots through which the operating rods have to pass can be con-
pletely sealed, no matter to what position the operating rods are moved therein. It
will be obvious that the inner plate 218 can be dispensed with and that the outer
plate 219 can be secured directly to the front of the furnace as illustrated in Fig. 45
of the drawings.
As shown in Fig. 35 of the drawings, there may be a separate operating rod
connected with each grate section or rows of grate bars for rocking the same.
This necessitates the use of two rods for connecting the grate rocking arms 196
with the link in the rock shaft 4. In this construction it will be necessary
to widen the link as 224, the said link being sufficiently wide to form two journal
bearings on each side of the enlargement of proper width, the said journals being
adapted to engage and operate connecting links as 225, 225 for rocking the grates.
In this construction also the links 225 are adapted to be separated by the central
enlargement 226. The shoes as 227 are made the same as the shoes 188 heretofore
described. It will be apparent that the operation of these parts will be precisely the
same as is the case with the shoes 188 and the journal 187 already described.
It will be seen that the intermediate bars 196 and the rock shaft 194 may be
dispensed with, if desired, and the operating rods be connected from the rock shaft 4
directly with the longitudinal bar 164 and the cut out 179 without departing from
the spirit of my invention as illustrated in Fig. 32. This necessitates the use of
longer slots through the front 76 of the furnace and correspondingly longer slides for
sealing the said openings. The construction employing the rock shaft 194 and the
arms 196 is therefore a preferable one as it does not produce such a large vertical
movement in the connecting rods.
Another feature of my invention is the providing of the overhanging projection
part of the bridge wall with a supporting plate so constructed as to present a broken
line of metal to the heat of the furnace. For this purpose I construct a bridge wall
supporting plate 228 as in Fig. 61 of the drawings with a series of slots cut in its
forward edge which break up the continuous line of metal as seen in the drawings.

page_text: This construction prevents the warping or cracking of the said supporting plate under
the action of the heat.
It will be apparent from the above description that I am enabled to produce a
furnace with a stoking apparatus comprising a feeding hopper and a moving grate
surface which is adapted to continually feed the fuel downwardly and an apparatus
which is able to cut out out a portion of the fire surface or cut out along the whole
length of the fire surface. The said apparatus is also so constructed as to be capable
of dumping the whole fire if necessary. It will also be evident that the parts are
simple and of such a form as to be strongly made and not exposed unnecessarily to
the heat of the fire.
In feeding fuels to the furnace, especially fine fuels or fuels, in which coarse and
fine are mixed together, it is desirable to provide some means whereby the fine
portion of fuel will not sift through the upper edge of the grate but help to feed
it on down the grate surface. For this purpose I preferably construct the fingers of
the upper grate bars with pivoted end portions or noses as 67. As seen in Fig. 10,
these pivoted ends 67 are provided with bifurcated lower ends as at 68, which sur-
round a downwardly projecting portion 69 of the web 70 of each finger. A pivot pin
is passed through these parts as at 71 to thoroughly hold the said ends or noses in
place. Side limiting lugs as 72 are formed upon the webs of each finger preferably
upon each side thereof and engaging the projecting end portions 73 of the pivoted
noses. A grate bar constructed in this manner and located next to the dead plate 8
as shown in my drawings, will, when rocked, move up and down with respect to the
said dead plate so that the pivoted ends or noses just touch and scrape the inner
curved surfaces of the said dead plate, as clearly seen in Fig. 11 of the drawings.
By this construction am enabled to close the space between the finger
ends of the grate bar and the dead plate so that fine fuel cannot sift through.
the same. If the grate bars are not thus constructed a space would have
to be left between the said bars and the dead plate in order to allow for
the expansion of the metal under the influence of the heat and it would'
be impossible to move the grate bars in contact with the dead plate
if the tips or ends of the fingers were made solid with the body portion of the finger.
By my improved construction, however, the space can be completely closed and
sufficient space for the expansion of the metal can be left between the pivoted finger
and the remaining portion of the finger as at 74. The fuel is more apt to fall
between two moving parts than between the interstices of an integral part or parts
that move together. Hence by closing the space between the stationary dead plate
and the moving grate bar, the fuel is practically prevented from running through at
this point. It may be found necessary also to construct the second grate bars in the
same manner as the first as the fuel does not begin to be thoroughly ignited and
caked together until it gets part way down the grate. Of course after the fuel has
become more or less burnt it cakes more and it is not usually necessary to employ
such a construction, near the lower part of the grate. As shown in the drawings, I
preferably apply it to the upper grate bars but may use it upon only one or all, if I'
desire, without departing from the spirit of my invention.
Co-operating with the hopper and the grate and the parts for operating the same,
is my improved means for removing the ashes from the ash-pit. The ash-pit 229 is
preferably formed with inclined sides so as to collect the ashes from the grate and
direct them toward the outlet opening as 230 in the bottom thereof. Just below the
opening 230 at the bottom of the ash-pit, I mount a chute or duct 231. The duct
or chute 231 is preferably formed of metal and is mounted at its rear end in the
brickwork of the furnace, the rear end being closed by the said brick-work. The
forward end of the duct 231 extends beyond the brick-work into an opening or tunnel
formed at the front of the furnace below the floor line. At the opening 230, the chute.
or duct 231 is provided with inclined upwardly extending flanges as 232 forming a
hopper leading to the interior or throat of the duct. The forward or delivery end of
the duct 231 is made slightly flaring as at 233 to prevent the liability of clogging,"
which might be produced by the constant pushing forward of the ashes. The front

page_text: wall of the ash-pit 229 preferably rests upon supporting irons as 234 which rest at their
lower ends upon the top of the duct 231 and at their upper ends against a T or angle
beam as 235 which supports the front of the furnace. While the chute or duct 231
may be made of any desirable shape, yet as shown in Figs. 49 and 52 of the drawings,
the ducts are preferably made quite wide in proportion to their height, it only being
necessary to make them of sufficient width to easily receive ashes from the ash-pit.
In the throat of the duct 231, I locate a reciprocating pusher 236 which forms an
important feature of my invention. The pusher 236 comprises a body portion.
as 237 having a flat upper surface adapted to fit close but not against the under side.
of the top of the duct 231. The body portion 237 is mounted upon wheels as 238,
the axles of the said wheels finding bearings in depending lugs as 239 formed upon
the under surface of the said body portion 237. The wheels 238 are adapted to run
upon tracks as 240 formed in the opposite sides of the duct 231. These tracks 240
are protected somewhat from the falling of the ashes by means of the inclined
sides 232 leading to the duct the said sides being extended far enough to form
overhanging portions as 241, as clearly seen in Fig. 54 of the drawings. The body
portion 237 and the supporting wheels 238 extend upon either side beneath the said
overhanging portions 241 so that the parts are not likely to become clogged in moving
back and forth. In order to clear the tracks 240, of any obstruction caused by the
ashes, I mount pivoted scrapers as 242 on the frame of the pusher, the said scrapers
being in line with the wheels, and their free ends adapted to rest upon the tracks to
the front and rear of the same. As seen in Fig. 54 of the drawings, the scrapers 242
are provided with inwardly bevelled edges near their points, which tend to throw the
ashes to one side, somewhat in the same manner as earth is turned over by a plow.
These pivoted scrapers ensure the keeping of the tracks clean so that the wheels can
always engage the same without wedging the parts in the duct 231. The scrapers 242
are preferably pivoted to the outer ends of rods or shafts as 243 which pass through
supporting lugs 244 depending from the body portion of the pusher. These rods or
shafts 243 preferably extend the full width of the pusher and also carry the pivoted
scrapers as will now be described.
In order to completely remove the ashes from the rear portion of the throat in the
duct, the pusher is provided with pivoted scrapers 245, 246 hung from the rods 243
between the supporting lugs 244. These scrapers 245, 246 extend the full width of
the bottom of the chute or duct 231 and are connected with each other by means of
a link as 247, the ends of the said link 247 being pivotally secured between the
lugs 248 formed on the inner faces of the said scrapers. Similar lugs are formed on
the outer face of the scraper 245 and between them are pivoted the inner ends of
operating rods 249, there being preferably two operating rods secured to each pusher,
as seen in Fig. 49 of the drawings. It will be evident from this description that
when the operating rods 249 are forced rearwardly, the scrapers 245, 246 will swing
upon their pivotal points so that their lower edges will be raised from the bottom of
the duct 231 and thus be free to pass over any falling of ashes and cinders, which
might accidentally get behind the said pusher. These scrapers will, of course, remain
in their upper position until the rearward movement of the rods 249 ceases. When
the rods 249 begin to inove forward again, the scrapers will be brought into their
vertical positions so as to engage the floor of the duct 231 and will push all the ashes
which have fallen through the opening 230 in front of the pusher, to a point beyond.
the said opening in the throat of the duct. The movement of the scrapers upon
their pivotal points is limited by means of lugs as 250, 251 the said lugs being
adapted to engage depending portions formed upon the under sides of the body
portion 237 of the pusher 236. The lug 250 prevents the sorapers from being swung
too high, while the lug 251 stops them when they are in exactly vertical position.
It is important to have the throat of the duct extend a sufficient distance forward of
the opening 230 in order that some ashes may always remain in the throat of the
duct to act as a seal for the ash-pit. This is especially needful in the using of an
under grate blast for supporting combustion upon the grate. It is further necessary

page_text: to make the throat of sufficient length to prevent the possibility of the ashes ac-
cumulated in the front end thereof being blown out into the ash tunnel.
Below the forward end of the duct 231, the ash tunnel is made of sufficient depth
to permit a car as 252 to run beneath the said duct. A car 252 normally stands
beneath the open end of the duct 231. The cars 252 are provided with wheels 253
adapted to run upon tracks. as 254. The cars 252 when they are full, are adapted
to be moved by running them forward upon the tracks 254 and out upon tracks 255,
which are carried by a truck as 256, which runs in a depressed portion of the floor
of the ash tunnel 257. The tracks 255 are preferably turned up at their outer ends
to prevent the cars 252 from running off of the same and may be provided with any
suitable means for holding them against movement in the opposite direction. The
truck 256 loaded with the cars 252 are then moved to any point in the tunnel 257,
where the ashes may be removed from the said cars, when they can be returned to
their position under the open ends of the ducts 231. A preferable means is to run
them upon an elevator and lift them up to the first floor surface, or higher, where they
can be run into a chute or pocket and emptied. The truck 256 preferably runs upon
tracks 258 which are laid in the bottom of the ash tunnel 257. The tunnel 257 is
preferably formed below the track line 254, just in front of the furnace proper and
may be covered in any suitable manner when it is not necessary to remove the ashes,'
in fact, it may be covered at all times, if desired, the tunnel 257 being made of
ample size to permit of attendants passing through the same and handling the cars
and trucks and means may be provided for descending into the tunnel at one or more
suitable points.
It will be apparent that a device constructed in this manner will be well adapted
for removing ashes from an ash-pit, the pusher operating to push forward each charge
of ashes against those already lodged in the throat of the duct 231 until they are
finally pushed out the front end and drop into the car 252.
It will be apparent that the ash tunnel 257 may be extended along in front of a-
battery of furnaces and be used for all of them in removing the ashes. It will be
obvious that the ash duct may be closed at the front and opened at the rear so as to
enable me to remove or convey away the ashes from the rear of the furnace instead
of at the front, but with a slight change in the arrangement of the duct and the
mechanism, without departing in the least from the spirit of my invention.
As seen in Fig. 49 of the drawings, furnaces employing mechanisms of this kind
are preferably provided with grates of two sections and therefore have two sets of ash
doors and two ash-pits, one beneath each section. This mechanism, however, could'
be employed in a furnace using a grate of only one section, as well as in a furnace
employing three or more sections. The pushers 236 are connected by the rods 249:
with arms 260 which are carried by a cross shaft as 261, supported in suitable bear-
ings upon a frame.as 262 mounted beneath the floor of the ash-pit. The shaft 261
preferably extends in front of both sections of the furnace and the arms 260 of both
pushers are rigidly secured thereto so as to be moved thereby. In front of the
shaft 261 is mounted a counter shaft as 263 also having suitable bearings in the
frame work 262. This shaft 263 is provided with an arm as 264 which is connected
by means of a rod 265 with an arm 266 secured to the power shaft 4, the said rod 265-
passing through the floor in front of the furnace. The counter shaft 263 thus
receives a rocking movement directly from the shaft 4. Upon the said rock shaft 263.
is also secured an arm as 267 having a wrist pin as 268 projecting to one side of its
free end. In order to connect the arm 267 with the shaft 261, I pivotally connect a
rod 269 with an arm 270 secured on said shaft 261. The forward end of the said.:
rod 269 is preferably provided upon its under surface with a half bearing as 271.:
which is adapted to engage the stud or wrist pin 268 secured to the arm 267. When
this bearing does thus engage the said wrist pin, the pushers will be caused to recip
ocate through the agency of the mechanism just described. This would produce a
continuous motion in the pushers which would be constantly removing the ashes from.
the ducts. It is, however, unnecessary and undesirable to have the pushers operating.

page_text: at all times for under usual circumstances, it is only necessary to remove the ashes from
the pit at stated intervals. I therefore prefer to use a means for connecting the pushers
with the power shaft intermittently so that their operation will only be accomplished
with sufficient frequency to keep the ash-pit from getting too full of ashes. To the
under side of the frame 262 are secured hangers 272 and 273 which carry a horizontal
shaft 274. To this shaft, is rigidly secured a ratchet wheel as 275 which is engaged
by a hooked rod or pawl as 276 pivotally hung from an arm or lever 277. The
lever 277 is pivoted at its rear end to a projection on the frame 262 and at its for-
ward end is formed with an elongated slot as 278. This slot engages a wrist pin
as 279 adjustably secured in a slot in an arm 280 keyed or otherwise rigidly secured
to the counter shaft 263. It will thus appear that as the shaft 263 is rocked the
arm 280 moving up and down will move the hooked pawl 276 so as to feed the
ratchet forward causing it to rotate step by step. The shaft 274 also carries a worm
as 281 which engages a worm wheel as 282 secured to a shaft 283 at right angles to
the shaft 274, the said shaft also carrying a cam wheel as 284. The shaft 283 is
carried by a frame composed of levers 285 and 286 pivoted at their rear ends to
projections upon the hanger 272. Their forward ends are connected by means of a
rod or bar as 287 thus completing the frame. The frame 288 thus formed is prefer-
ably held in its forward upper position by means of a rod as 289 secured at its lower
end to the cross rod 287 and extending upwardly through the floor in the front of
the furnace. A handle as 290 is preferably formed upon the upper end of the said
rod and a pivoted dog as 291 is secured to the said rod at such a point that when it
engages the floor as shown in Figs. 48 and 59 the frame 288 will be held in such a
position that the worm wheel 282 will engage the worm 281. As seen in Figs. 59
and 60 of the drawings, the dog 291 may be of simple construction being merely
a piece of metal pivoted to the rod 289 and the said dog being preferably bifurcated
at its upper and lower ends as seen in Fig. 60 so as to partially surround the said
rod, the lower end striking the floor in the vertical plane of the pivotal point so as
to support the rod in its upper position. It will thus be seen that when the lower end
of the dog 291 is pushed away from the rod, it will allow the rod 289 to drop whereby
the frame 288 will be lowered and disengage the worm wheel and worm 281 and 282
respectively. By this construction when it is wished to lower the said rod, it will be
only necessary to knock or force the dog 291 away from the rod 289 in order to permit
the frame 288 to drop. When the rod is raised the dog drops into its vertical
position, and thus engages the floor to prevent the rod dropping again. Also pivoted
to the hanger 272 is an arm 292 which carries at its outer free end an anti-friction
roller 293 which is adapted to run upon the periphery of the cam wheel 284. This
arm 292 carries a trolley arm as 294 which is preferably formed of spring metal and
carries a trolley or roller as 295 which is located directly beneath the rod 269. It
will be clearly seen from Fig. 50 that the cam wheel 284 is provided with a depressed
portion as at 296 which takes up only a comparatively short portion of the periphery
of the said cam wheel. It thus happens that when the frame 288 is in its upper
position the roller 293 will engage the periphery of the said cam wheel and be held
up thereby for a greater portion of its revolution and will thus force the trolley 295
against the under side of the rod 269 and lift the same out of engagement with the
wrist pin 268. This will disengage the pushers from the power shaft and cause them
to cease operating.. When the roller 293 drops into the depression 296 of the cam
wheel, the trolley 295 will be lowered and the rod 269 will be permitted to rest upon
and engage the wrist pin 268 thus completing the connection between the pushers
and the power shaft and causing the said pushers to be reciprocated for dumping the
ashes. The rod 269 is preferably extended sufficiently beyond the half bearing 271
to enable the said rod to always engage the wrist pin when it is lowered and permit
the said pin to slide along its under surface until it falls into the half bearing 271.
By the mechanism thus described, it will be seen that through the medium of the
ratchet wheel and worm gearing and the cam, the power shaft will be caused to
actuate the pushers in the ash duct only at intervals. Should it be necessary to
quickly discharge the ashes from the ash-pit, a continuous motion can be instantly

page_text: communicated to the same by disengaging the pawl. 291 from the floor and per-
mitting the rod 289 to drop, whereby the cam and worm wheel and the trolley will
be lowered sufficiently to no longer affect the operation of the rod 269 and leave it
in continual engagement with the wrist pin 268. As soon as the ashes have been
completely discharged, the intermittent mechanism can again be brought into
engagement by lifting the rod 289 by means of its handle 290, the pawl 291 holding
it in its upper position. It will thus appear that the change can be made from the
intermittent to the continuous motion at a moment's notice and the change can be
inade as quickly from the continuous to the intermittent motion again by the mere
operation of the rod 289.
As seen in Figs. 57 and 58 of the drawings, the floor as 297 may be arranged a
little differently, if desired, with respect to the floor of the ash-pit. As seen in Fig. 48
the floor extends to the furnace front, whereas it may be provided as in the said
Figs. 57 and 58 with a hinged section or portion as 298 which extends from its forward
edge to a point directly beneath the ash-pit doors 299. In this construction the
hinged portion of the floor will be connected with the floor at its outer edge by means
of suitable hinges as 300 and will be provided with segmental racks as 301 at its inner
edge. The racks 301 are adapted to be engaged by means of pinions as 302 secured
to a shaft as 303 supported in suitable bearings as 304. A bevel gear as 305 is also
rigidly attached to one end of the shaft 303 and meshes with a corresponding bevel
gear 306 secured to the lower end of a vertical shaft 307 which extends upwardly
through the floor and carries a hand operating wheel 308 at its upper end. "It will
thus appear that by operating the handle 308, the gearing will cause the pinions 302
to raise or lower the racks 301 secured to the under side of the pivoted floor 298. As
seen in Fig. 58 the said pivoted floor is in its upper position and then occupies the
same plane with the floor 297 completing the floor surface to the front of the furnace.
The said pivoted floor is preferably made to fit snugly and tightly against the under
edges of the ash doors 299 so as to completely seal the ash-pit at this point.. When
it is desired to gain access to the ash-pit from the front the pivoted floor 298 can be
easily dropped until it is flush with the surface of the ash-pit floor when the ashes can
be hoed or raked out from the ash-pit across the pivoted floor 298 and out upon the
floor 297. The inner free edge of the pivoted floor 298 is preferably provided with a
projecting ledge as 309 which when the floor is in its lower position, rest in a corre-
sponding recess as 310 formed in the angle plate 311 at the upper edge of the ash-pit
floor. This, of course, limits the downward movement of the floor 298 and operates
to make a snug joint so that the ashes can be readily pulled out upon the floor. In
order to close the sides of the space formed when the said pivoted floor is lowered
triangular side pieces as 312 are secured to the floor 297 at each end of the pivoted
floor 298, the said side pieces having a projection or ledge along their lower edges as
at 313 upon which the floor 298 rests when in its lower position. The bearings 304
are preferably secured to the said side pieces 312. This device forms a very desirable
way of permitting access to the ash-pit when it is desired to extract the ashes there-
from by hand. It may be employed in connection with the usual pusher mechanism
described above or where it is not desired to put in a device like that shown and
described for giving the intermittent movement, the said device may be dispensed
with and the pivoted floor used alone. In this instance, it would not be necessary
to have a large tunnel 257 beneath the floor but a small tunnel as 314 should be
placed beneath the pivoted floor in order that any siftings of fine ashes or dust which
inight work beneath the floor could be collected therein and removed from time to
time by lifting the pivoted floor above its horizontal position, when the ash-floors are
opened. Such a pit or tunnel would not have to be cleaned very often possibly once
in a year.
It will thus be seen that by my improved. ash remover mechanism, I am enabled to
secure a continuous feed for operating the same by means of power or an intermittent
feed and can change from one to the other very quickly and that I am enabled to remove
the ashes from the ash-pit by hand, if desired, by employing the pivoted floor. The
parts of my device can be made in a strong and simple manner and are not liable to get

page_text: out of order or to break easily. They are also very effective for doing the work
required.
It will be observed that my completed furnace is especially well adapted to feed fuel
automatically on to the grate, regulate it perfectly upon the same, and permit of an easy
and automatic removal of the ashes, resulting from consuming the fuel.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a furnace, the combination with a suitable grate, of a hopper for feeding fuel
thereto, the said hopper having a pivoted front and a curved lower portion, means
for raising or lowering the pivoted front for permitting access to the interior of the
furnace approximately on a line with the top surface of the grate for introducing
kindling fuel, and a pusher mounted in the lower portion of the hopper for foreing
the regular fuel out upon the grate, substantially as described.
2. In a furnace, the combination with a suitable grate, of a feed hopper, the said
feed hopper having a hinged front for permitting access to the top of the grate,
mechanical means for raising and lowering said hinged front and sliding gates
adapted to regulate the size of the discharge opening of the hopper, and means for
raising or lowering the same, substantially as described.
3. In a furnace, the combination with a suitable grate, of a hopper for feeding
fuel thereto, the said hopper having a curved lower portion, and a hinged front
and means for raising the said pivoted front to different heights and supporting
the same in the various positions for permitting access to the interior of the furnace,
substantially as described.
4. In a furnace, the combination with a suitable grate, of a hopper for feeding fuel
thereto, a pivoted front forming a part of the hopper wall, a screw engaging the said
pivoted front for raising or lowering the said pivoted front to gain access to the
interior of the furnace, substantially as described.
5. In a furnace, the combination with a suitable grate, of a hopper for feeding
fuel thereto, the said hopper having a pivoted front, comprising a plate pivoted
at its upper end to the hopper, having strengthening webs formed thereon, a
screw mounted on the lower portion of the hopper and engaging a pivoted sleeve
secured thereto, the upper end of the said screw being pivotally connected to the
said plate, and a hand operating wheel secured to the said screw for rotating the
same, the construction being such that the plate may be lifted to a proper height
to permit of the introduction of kindling fuel on to the grate, substantially as
described.
6. In a furnace, the combination with a grate of a hopper for feeding fuel
thereto, the said hopper having a curved bottom, an oscillating pusher mounted
in the said hopper, means for closing the joint between the pusher and the
curved bottom of the hopper, a pivoted plate forming the front of the hopper,
the lower end of the said plate when in its lower position engaging the oscillating
pusher and means for oscillating the said pusher whereby fuel may be forced upon
the grate, substantially as described.
7. In a furnace, the combination with a grate of a hopper, for feeding fuel thereto,
the said hopper having end walls and a central partition or housing, the said end
walls and the partition being hollow and adapted to enclose the supporting arms of a
pusher, an oscillating pusher secured to the said arms, and means for oscillating
the said pusher for forcing the fuel out of the hopper, substantially as described.
8. In a furnace, the combination with a grate of a hopper for feeding fuel
thereto, the said hopper having a curved pusher mounted in said hopper and
pivotally supported so as to move along the surface of the curved bottom, a
pivoted front mounted in the hopper extending down into close proximity to the
said pusher, followers mounted in the said recesses in the lower end of the said
plate and engaging the upper surfaces of the pusher for keeping the fuel from
'

page_text: getting between the said pusher and plate, and followers mounted in the pusher
for preventing the fuel from getting beneath it, substantially as described.
9. In a furnace, the combination with a grate, of a hopper for feeding fuel thereto,
said hopper being provided with a discharge opening at its lower end, a gate for
partially closing the said discharge opening comprising a slide or plate mounted upon
the rear wall of the hopper, and means for raising or lowering the said gate, sub-
stantially as described.
10. In a furnace, the combination with a grate, of a hopper for feeding fuel
thereto, the said hopper having a discharge opening, slides or gates for partly closing
the same, the said slides being formed of plates having strengthening webs and
having notches cut into their lower ends for presenting a broken line of metal to the
heat, bell crank levers connected with the said gates by means of links, a bar or rod
connecting the said bell crank levers, and a hand operating lever for operating the
said bell crank levers, whereby the gates may be raised or lowered to open the
discharge opening more or less, substantially as described.
11. In a furnace, the combination with a grate of a hopper, for feeding fuel
thereto, a swinging pusher mounted in the said hopper, means for operating the said
pusher comprising a power shaft mounted outside the furnace front, an arm secured
to the said shaft, an arm secured to the shaft of the pusher, slides moving in both of
these arms, and means for pivotally connecting them, a screw mounted upon one of
said arms and engaging one of the slides, and means secured to the said screw for
rotating it whereby the slides will be adjusted to regulate the feed of the pusher,
substantially as described.
12. In a furnace, the combination with a hopper, of a pusher mounted therein,
means for oscillating the said pusher comprising a rock shaft mounted outside the
furnace front, a slotted arm secured thereto, a slotted arm secured to the pusher,
slides mounted in each of the said slotted arms and a pivot pin for connecting them,
a screw mounted upon the power shaft arm and engaging a sleeve upon one of the
slides, and a hand operating wheel secured to the said screw whereby the slides may
be adjusted in the slots to vary the swing of the pusher, substantially as described.
13. In a furnace, the combination with rocking grate bars and a feed hopper, of a
rock shaft for operating the grate bars and the pusher in the hopper, a main power
shaft mounted upon the furnace front above the hopper, means for connecting
the said rock shaft with the said power shaft comprising an arm secured upon the
rock shaft, a link connected with the power shaft, and means for connecting the said
link with the said arm when it is desired to operate the grates and hopper, substantially
as described.
14. In a furnace, the combination with a rocking grate and a hopper, of a rocking
shaft for operating the same, a main power shaft mounted above the hopper, an arm
secured to the rock shaft, a link detachably secured to the said arm, a spring pressed
clutch mounted upon the rock shaft the construction being such that if the grate or
hopper mechanism becomes clogged the clutch will permit the rock shaft to stop and at
the same time make sufficient noise to attract attention, substantially as described.
15. In a furnace, the combination with a grate principally made up of rocking
grate bars, of means for rocking the said grate bars, means for adjusting the said
rocking means, whereby the grate bars may be given a uniform movement through-
out or may have a graduated movement from one end to the other, substantially as
described.
16. In a furnace, the combination with an inclined grate having rocking grate
bars, of a rocking frame for actuating the same, adjustable means connecting said
frame with the said bars, the construction being such that the frame will be adapted
to rock the said bars uniformly or with a graduated movement with respect to each
other, substantially as described.
17. In a furnace, the combination with an inclined grate having rocking grate
bars, of a rocking frame adapted to actuate the same, rods connecting the said frame
with the bars, and means for adjustably connecting said rods to the said frame,

page_text: the construction being such that upon rocking the frame a graduated or uniform
movement will be given to the different portions of the said grate, substantially as
described.
18. In a furnace, the combination with an inclined grate having rocking grate
bars, of a rocking frame adapted to actuate the same, the said frame carrying movable
journal blocks, means for adjusting the movable journal blocks, rods connecting the
journals with portions of the grate, and means for rocking the frame, the construction
being such that the movable journal blocks may communicate a uniform or
graduated movement to the grate bars according to their position in the frame
substantially as described.
19. In a furnace, the combination with an inclined grate having rocking grate
bars, of a frame pivotally mounted in the furnace, said frame having guide bars,
movable journal blocks adapted to move upon the said guide bars, means for
adjusting the said blocks, connecting rods interposed between the journals upon said
movable journal blocks and the grate bars, and means for rocking the frame whereby
the rocking bars may be rocked simultaneously to a uniform extent or have a
graduated motion with respect to each other, substantially as described.
20. In a furnace, the combination with an inclined grate having rocking grate
bars, of a rocking frame having guide bars formed therein, movable journal blocks
mounted upon the guide bars, means for connecting the movable journal blocks to a
single member or arm, and means for operating the said arm or member, whereby
the position of the movable journal blocks may be regulated with respect to each
other, the construction being such that the different portions of the grate bars will
be adapted to move uniformly or with a graduated action, substantially as
described.
21. In a furnace, the combination with an inclined grate having rocking grate bars, of
means for rocking the said bars comprising a rocking frame pivotally mounted in the
furnace, movable journal blocks mounted in the said frame, means for connecting the
journal blocks, and means for operating the said journal blocks, and connecting
means, whereby all the journal blocks will be moved to regulate the throw of the
grate bars, substantially as described.
22. In a furnace, the combination with an inclined grate having rocking grate
bars, of means for rocking the same, comprising a rocking frame, movable journal
blocks mounted therein; a rack for raising or lowering the said journal blocks, a
pinion for engaging the said rack, and means for operating the said pinion whereby
the journal blocks are adjusted to impart different movements to the grate bars,
substantially as described.
23. In a furnace, the combination with an inclined grate having rocking grate
bars, of a frame for operating the same, said frame having supporting journals, guides
formed in the said frame, movable journal blocks moving upon the said guides, a
pivoted arm mounted upon the said frame, links connecting said arms with the said
journal blocks, and means for raising and lowering said links and journal blocks
whereby each one has a graduated movement relative to the other, and means for
connecting said movable journal blocks with different grate bars, the construction
being such that the grate bars will be moved according to the position of the said
movable journal blocks, substantially as described.
24. In a furnace, the combination with an inclined grate and rocking grate, bars,
of a pivoted frame for moving the same, movable journal blocks mounted in the said
frame, racks for raising and lowering the said journal blocks, pinions engaging the
said racks, an actuating pinion for operating the said pinions, a shaft for rotating the
said actuating pinion, said shaft being adapted to extend through the front of
the furnace, and operating means secured to the outer ends of the said shaft, the
construction being such that the movable journals may be adjusted in the frame from
the outside of the furnace to regulate the throw of the grate bars, substantially as
described.
25. In a furnace, the combination with a inclined grate and rocking grate bars,
of a rocking frame for actuating the same, movable journal blocks mounted in the

page_text: said frame, racks connected with the said journal blocks, a shaft having an actuating
pinion adapted to engage said racks to raise or lower-the said movable journal blocks,
said shaft extending through the front of the furnace, hand operated means secured
to the outer end of the shaft, and means for actuating the hand operating mechanism
to its different adjusted positions, substantially as described.
26. In a furnace, the combination with an inclined grate and rocking grate bars, of
a rocking frame for operating the same, means for connecting the grate bars with the
said frame, a shaft for adjusting the said connections to impart different movements
to the parts of the grate, hand operating means upon the outer end of the said shaft,
and an indicator mounted on the front of the furnace and actuated by the operating
means, whereby the position of the grate bars may be determined and adjusted
without inspecting the interior of the furnace, substantially as described.
27. In a furnace, the combination with an inclined grate and rocking grate bars,
of a frame for actuating the same, guides formed in the said frames movable journal
blocks mounted on the said guides, each of said journal blocks comprising a hollow
casing adapted to enclose the said guides, and journal studs mounted thereon, means
for connecting said journal studs with the rocking grate bars and means for adjusting
said journal blocks, substantially as described.
"
28. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame for operating the same, movable journal blocks mounted in the
said frame and connected with the said grate bars, said journal blocks comprising
hollow casings adapted to receive guides formed in the frame, studs formed upon the
faces of the said casings and means for connecting all the studs with a pivoted arm,
the construction being such that when one casing is moved all the other casings will
be moved relatively, substantially as described.
29. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame for actuating the same, movable journal block mounted in the
said frame connected with said grate bars, racks connected with the said journal blocks,
pinions for operating the said racks, and a stationary pinion adapted to actuate the
said pinions on the rocking frame, said stationary pinion and the one with which
it meshes being provided with teeth having curved edges, whereby the frame may
rock with respect to the actuating pinion without throwing the parts out of engage-
ment, substantially as described.
30. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame for actuating the same, rods connecting said frame with separate
grate bars, movable journal blocks mounted upon the said frame, means for adjusting
said journal blocks, said rods being provided with engaging end portions having
bifurcated hooks for engaging the movable journal blocks and means for connecting
the other ends of the said rods to the grate bars, substantially as described.
31. In an inclined feeding grate, the combination with rocking grate bars, of a
rocking frame pivotally mounted with respect to the said grate, movable journal
blocks mounted in said frame, means for connecting said journal blocks with single
bars and means for adjusting the journal blocks so as to give the bars a uniform or:
graduated movement, substantially as described.
32. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame co-operating with the same, movable journal blocks mounted in
the said frame and connected with separate grate bars, racks connected with said
movable journal blocks adapted to raise or lower the same, said racks being guided
in slots in the said rocking frame, the upper end of the said rack being provided
with an elongated slot adapted to receive a journal formed upon one of the movable
journal blocks, and pinions for actuating the said racks, the construction being such
that the racks may adjust themselves with relation to the said journal blocks, sub-
stantially as described.
33. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame connected therewith for operating the same, curved guides mounted
in the said frame, movable journal blocks mounted upon the said guides, and means
D
:
}

page_text: for raising or lowering the said movable journal blocks for regulating the throw of
the grate bars, substantially as described.
34. In a furnace, the combination with an inclined grate and rocking grate bars, of
a rocking frame connected with different grate bars for imparting the same or
different movements to the same means for rocking the said frame, said means
comprising a rod having a bifurcated inner end, said rod passing through the front of
the furnace, a journal upon the frame for engaging the said rod, and means outside
the furnace for reciprocating the said actuating rod, substantially as described.
35. In a furnace, the combination with an inclined grate, and rocking grate bars,
of a rocking frame for actuating the same, movable journal blocks mounted in the
said frame, means for bringing the said journal blocks upon the same line to impart
a uniform movement to the grate bars, and means for lowering the said journal blocks
to graduate the movement of the said grate bars more or less with respect to each
other, substantially as described.
36. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame for actuating the same, movable journal blocks mounted in the
said frame, means for moving the said journal blocks upon a level and above and
below the same, the construction being such that when the journal blocks are brought
upon a level they will communicate a uniform movement to the said grate bars and
when they are moved above and below the level, they will impart a graduated feed to
the grate, substantially as described.
37. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame for actuating the same, movable journal blocks mounted in the
said frame, pinions for raising or lowering the said journal blocks, and an actuating
pinion engaging one of said pinions for moving it, the said pinion which engages the
said actuating pinion having teeth with curved edges to permit of the rocking of the
frame without interfering with the engagement of the said pinions with the actuating
pinion, substantially as described.
38. In a furnace, the combination with an inclined grate, and rocking grate bars,
of a rocking frame for actuating the same, movable journal blocks mounted in the
said frame, means for moving the said journal blocks, the construction being such
that when the journal blocks are brought upon a level, they will communicate a
uniform movement to the said grate bars, when they are moved below the level,
they will impart a graduated feed to the said bars with the maximum movement at
the bottom, and when they are moved above the level, they will impart a graduated
feed to the said bars with the maximum movement at the top, substantially as
described.
39. In a furnace, the combination with an inclined grate principally made up of
rocking grate bars, of means for rocking the said grate bars for producing a feeding
movement and a cut out movement means for adjusting the said rocking means,
whereby the grate bars may be given a uniform movement through out or may
have a graduated action, and means connecting the said rocking means with an
actuating shaft outside the front of the furnace.
40. In a furnace, the combination with an inclined grate and rocking grate bars,
of a rocking frame for operating the same, means connecting the said bars and
frame, a shaft for adjusting the said connecting means to impart the same or different
movements to the parts of the grates, an indicator mounted on the front of the
furnace, and gearing connecting said indicator with said shaft whereby it is
adapted to indicate the position of the parts inside the furnace, substantially as
described.
41. In a furnace, the combination of a suitable feed hopper, an inclined grate
composed of rocking grate bars, mechanical means for automatically rocking the bars
slightly forward and backward to feed the fuel down the incline, said means being
capable of being adjusted to give the grate bars a greater movement in an upward
and backward direction from the general plane of the feed movement for the purpose
of cutting out clinkers and ashes or entirely dumping the fire, the grate bars, when

page_text: rocked, in an opposite direction, returning to the general plane of the feed movement,
substantially as described.
42. In a furnace, the combination of a suitable hopper, an inclined grate composed
of rocking grate bars, means for automatically rocking the bars slightly forward and
backward to feed the fuel down the incline, and means for varying the feed of the
fuel, said means comprising a yoke or link. attached to a power shaft, a slide.
adjustable upon the yoke and connected with the connecting rod or rods which
operate the grate bars, and means for holding and clamping the slides in any adjusted
position, substantially as described.
43. In a furnace, the combination of a suitable hopper, an inclined grate having
rocking grate bars, means for automatically rocking the bars slightly forward and
backward to feed the fuel down the incline, and means for varying the feed of the
fuel, said means comprising a yoke or link attached to a power shaft, a slide adjustable
upon the yoke and connected with the connecting rod or rods which operate the grate
bars, and a right and left screw for clamping the slides in an adjusted position,
substantially as described.
44. In a furnace, the combination of a suitable hopper, an inclined grate composed
principally of moving grate bars, a cut out located at the lower end of the grate, a.
moving mechanical element for moving the said grate bars, and means for trans-
mitting motion continuously from the said mechanical element to the said grate
bars and intermittently from said element to the cut out, substantially as
described.
45. In a furnace, the combination of a suitable hopper, an inclined grate composed.
principally of rocking grate bars, a rocking cut out located at the lower end of the
grate, a moving mechanical element for rocking the said grate bars and the cut out,
and means for transmitting a rocking motion continuously from said mechanical
element to the said grate bars and intermittently from said element to the cut out,
substantially as described.
46. In a furnace, the combination of a suitable feed hopper, an inclined grate
composed of movable bars, power rock shaft, means connected with the power rock
shaft and the grate bars for rocking the latter, a rocking cut out located at the lower.
end of the grate, and means connecting the cut out with the power rock shaft which
means are independent of the means connecting the power rock shaft with the.
rocking grate bars, substantially as described.
47. In a furnace, the combination of a suitable feed hopper, an inclined grate, a
rocking cut out located at the lower end of the grate, means for automatically
operating the said cut out, the cut out being capable of being operated preferably
intermittently, substantially as described.
48. In a furnace, the combination of a suitable feed hopper, an inclined grate
composed of rocking grate bars, mechanical means for automatically rocking the bars
slightly forward and backward to feed the fuel down the incline, said means being
capable of being adjusted to give the grate bars a greater movement in an upward
and backward direction from the general plane of the feed movement for the purpose
of cutting out clinkers and ashes or entirely dumping the fire, the grate bars, when
rocked, in an opposite direction, returning to the general plane of the feed movement,
a rocking cut out located at the lower end of the grate, and means for operating
the cut out independent of the means for feeding the fuel down the grate, substantially
as described.
49. In a furnace, the combination of a suitable feed hopper an inclined grate
composed of rocking grate bars, mechanical means for automatically rocking the bars
slightly forward and backward to feed the fuel down the incline, said means being
capable of being adjusted to give the grate bars a greater movement in an upward
and backward direction from the general plane of the feed movement for the purpose
of cutting out clinkers and ashes or entirely dumping the fire, the grate bars, when
rocked, in an opposite direction, returning to the general plane of the feed movement,
a rocking cut out located at the lower end of the grate, and means for automatically.
!

page_text: and intermittently operating the cut out independent of the means for feeding the
fuel down the grate, substantially as described.
50. In a furnace, the combination of a suitable hopper, an inclined grate, a rocking
cut out, and means for automatically rocking said cut out at the desired time, said
means comprising a rod connected at its lower end to said cut out, and so constructed 5
at its upper end as to be operated by a power shaft at the proper time to rock the cut
out, a ratchet wheel, a pawl connected to the power shaft and engaging the ratchet
wheel, a cam on one face of the ratchet wheel which is formed with a depression, a
pivoted arm carrying a roller at its outer end which latter bears and travels on the
cam an arm connected to the pivoted arm and provided with a trolley wheel at its 1
outer end, which latter bears upon the under side of the rod which is connected to
the cut out, the construction and arrangement being such that the ratchet wheel will
be slowly revolved by the power shaft through the pawl and the cut out operating rod
will be kept out of connection with the power shaft until the roller on the pivoted
arm enters the depression in the cam, at which moment the cut out operating rod 1
will be operated by the power shaft and the cut out thereby rocked back and forth to.
cut out the clinkers and ash, which operation will be continued 'until the roller has
passed out of the depression in the cam, substantially as described..
51., In a furnace, the combination of a suitable hopper, a rocking cut out; an
inclined grate composed of rocking bars, a stationary tie bar. attached to the journal
bars of the grate at its lower end, the said bar being grated on its top and on the upper
portion of its rear side, and slightly concave on said rear side to adapt it to the
movement of the cut out, the said rocking cut out being arranged between the bridge
wall and the stationary end bar of the grate, said. cut out being formed with an
upwardly curved bridging portion, which practically bridges the space between the
bridge wall and the stationary end bar of the grate when the cut out is operated in
one direction, and also formed with a lower portion extending forward of the upper
portion, and which when the cut out is operated in the opposite direction will bridge
the space between the stationary tie bar of the grate and the bridge wall and form a
pocket, and means for operating the grate bars, and the cut out, substantially as
described.
52. In a furnace, the combination of a suitable hopper, an inclined grate, a rocking
cut out, and means for automatically rocking said cut out at the desired time, said
means comprising a rod connected at its lower end to said cut out, and provided at
its upper end with a depression, a rock shaft carrying an arm provided with a wrist
pin which
adapted to engage the depression in the cut out operating rod, a ratchet
wheel, a pawl connected to the rock shaft and engaging the ratchet wheel, a cam on
one face of the ratchet wheel which is formed with a depression, a pivoted arm
carrying a roller at its outer end, which latter bears and travels on the cain, an arın
connected to the pivoted arm and provided with a trolley wheel at its outer end which
latter bears upon the under side of the rod which is connected to the cut out the
construction and arrangement being such that the ratchet wheel will be slowly
revolved by the rock shaft through the pawl, and the depression in the cut out
operating rod will be kept out of engagement with the wrist pin on the arın
connected to the rock shaft until the roller on the pivoted arm enters a depression in
the cam, at which moment the cut out operating rod will be operated by the power
shaft and the cut out thereby, rocked back and forth to cut out clinkers and ash,
which operation will be continued until the roller has passed out of the depression in
the cam, substantially as described.
53. lu a furnace, the combination of a suitable hopper, an inclined grate, a dead
plate supporting frame interposed between the hopper and the grate, a portion of
said frame being made up of broken or short lines of metal, and an inclined dead
plate composed of comparatively short sections of metal with a space between each
section, each section being provided with a centrally arranged apertured lug and
pins which pass through the lugs for securing the sections to the frame, substantially
as described.
54. In a furnace, the combination of a hopper an inclined grate, a frame for

page_text: supporting a dead plate interposed between the hopper and the grate, a portion of
said frame being made of short or broken. lines of metal, an inclined dead plate
composed of comparatively short sections of metal with spaces between their adjoin-
ing edges, and lugs on the under side of the said sections of the dead plate, which
bear against the supporting frame for holding the dead plate in position on the fraine,
substantially as described.
55. In a furnace, the combination with a suitable hopper, an inclined grate having
rocking grate bars capable of having a feed movement and a cut off movement, means
for automatically rocking the bars slightly forward and backward to feed the fuel
down the incline, ineans for varying the feed of the fuel and effecting the cut off
movement, said means comprising a member attached to a power rock shaft, and
having actuating arm portions which extend upwardly and downwardly and are
connected directly or indirectly by a rod or rods with the grate bars, and means for
holding the adjustable member in any adjusted position, substantially as described.
56. In a furnace, the combination of a suitable hopper, an inclined grate having
rocking grate bars capable of having a feed movement and a cut off movement, means
for automatically rocking the bars slightly forward and backward to feed the fuel
down the incline, means for varying the feed of the fuel and effecting the cut off
movement, said means comprising a member attached to the power shaft and having
actuating arm portions which extend upwardly and downwardly from said shaft, a
slide adjustable upon the said member, and connected directly or indirectly with a
connecting rod or rods which. operate the grate bars, and means for clamping the
slide in any adjusted position, substantially as described.
57. In a furnace, the combination with an inclined grate having rocking grate bars
and a hopper for feeding fuel to the said grate, of means for passing the fuel thus fed
down the surface of the grate without permitting it to run through, comprising grate
bars having pivoted tips or noses, the said noses occupying the space between the
upper grate bar or bars and the dead plate or between the grate bars, substantially as
described.
58. In a furnace, the combination with a rocking grate and a hopper for feeding
fuel thereto, of grate bars having fingers provided with pivoted ends or noses for
preventing fine fuel from running through, the said pivoted ends having bifurcated
lower portions pivoted to the webs of the fingers and lugs upon the said fingers for
limiting the movement of the pivoted ends, a sufficient space being left between the
pivoted ends and the body portions of the fingers to permit of the expansion of the
fingers, substantially as described.
59. In a furnace, the combination of a hopper an inclined grate, an ash-pit
beneath the grate which is provided with an opening for the discharge of ashes, and
means for removing the ashes, comprising a duct located beneath the ash-pit in line
with the discharge opening thereof and communicating therewith, and a reciprocating
pusher which operates in the duct and forces the ashes before it toward the throat of
the duct, the throat enclosing and guiding the pusher, substantially as described.
60. In a furnace, the combination of a hopper an inclined grate, an ash-pit
beneath the grate which is provided with an opening for the discharge of ashes, a
duct located beneath the discharge opening in the ash-pit and communicating
therewith, a reciprocating pusher which operates in the duct and forces the ashes
before it toward and into the throat of the duct and ultimately out at the discharge
end of the duct, a portion of the ashes always remaining in the duct to seal it and
prevent the escape of an under grate blast at that point, the movement of the pusher
being regulated to accomplish this object, and means for reciprocating the pusher,
substantially as described..
61. In a furnace, the combination of a hopper an inclined grate, an ashpit beneath
the grate which is provided with an opening for the discharge of ashes and means for
removing the ashes comprising an open ended duct located beneath the opening in
the ash pit and communicating therewith, and a reciprocating pusher which operates
in the duct and forces the ashes before it through and out at the discharge end' of

page_text: said duct, operating rods attached to said pusher, and means for operating the said
operating rods, substantially as described.
62. In a furnace, the combination of a hopper an inclined grate, an ash-pit beneath
the grate which is provided with an opening, means for removing the ashes compris-
ing a duct located beneath the ash-pit in line with the discharge opening thereof and
communicating therewith, a reciprocating pusher which operates in the duct and
forces the ashes before it toward the throat of the duct, means for reciprocating the
pusher and a car for receiving the ashes from the open end of the duct, and means
for removing the filled car, substantially as described.
63. In a furnace, the combination with a hopper and an inclined grate, of a duct
adapted to receive ashes from an ash-pit, a pusher adapted to be reciprocated below
the opening from the ash-pit for forcing ashes through the throat of the duct, the
delivery end of the said duct being formed with a flaring portion for preventing the
clogging of the ashes in the said throat, substantially as described.
64. In a furnace, the combination with a hopper and an inclined grate, of a
delivery duct for receiving ashes from an ash-pit, a reciprocating pusher mounted in
the said duct, and scrapers carried by the said pusher and adapted to be raised so as
to pass over the ashes as the pusher is forced inwardly but swinging downwardly
to scrape the bottom of the duct as the pusher moves forward, substantially as
described.
65. In a furnace, the combination with a hopper, and an inclined grate, of a duct
for receiving ashes from an ash-pit, a pusher mounted in the said duct, said pusher
comprising a body portion adapted to move upon supporting tracks, pivoted scrapers
suspended from the said body portion, the said scrapers being connected by means of
a link, means connecting the forward scraper with a rock shaft, and means for rocking
the said shaft whereby a reciprocating movement is imparted to the pusher, the con-
struction being such that as the pusher recedes the scrapers will be raised to pass
over obstructions and when it moves forward, the scrapers will be lowered to push
forward all the ashes in the said duct, substantially as described..
66. In a furnace, the combination of a hopper, an inclined grate, an ash-pit beneath
the grate which is provided with an opening for the discharge of ashes, a duct located
beneath the ash-pit in line with the discharge opening and communicating therewith,
a reciprocating pusher which operates in the duct and forces the ashes before it toward
the throat of the duct, a car for receiving the ashes from the duct, and a truck adapted
to receive the car for removing it bodily and the ashes contained therein, substantially
as described.
67. In a furnace, the combination of a hopper, an inclined grate, an ash-pit beneath
the grate which is provided with an opening for the discharge of ashes, means for
removing the ashes comprising a duct located beneath the ash-pit in line with the
discharge opening thereof and communicating therewith, a reciprocating pusher which
operates in the duct and forces the ashes before it toward the throat of the duct, a
tunnel below and forward of the front of the furnace, cars for receiving the ashes
from the ash-pit, and trucks for removing the cars bodily through the said tunnel, the
tracks for the truck being on a lower plane than the track for the ashcar,
substantially as described.
68. In a furnace, the combination with a hopper and an inclined grate, of a duct for
receiving ashes from an ash-pit, a pusher mounted in the said duct and having
scrapers suspended therefrom, reciprocating means connected with the said scrapers
and lugs for limiting the movement of the said scrapers upon their pivotal points,
substantially as described.
69. In a furnace, the combination with a hopper and an inclined grate, of a duct
for receiving ashes from an ash-pit, a pusher mounted in said duct comprising a body
portion, wheels for supporting the same, and pivoted scrapers adapted to scrape the
tracks to the front and rear of the said wheels substantially as described.
70. In a furnace, the combination of a hopper an inclined grate, an ash-pit beneath
the grate which is provided with an opening for the discharge of ashes, means for
removing the ashes comprising a duct located beneath the ash-pit in line with the

page_text: discharge opening, thereof and communicating therewith, a reciprocating pusher which
operates in the duct, and forces the ashes before it toward the throat of the duct, and
means for connecting the said pusher with a power operated shaft for operating the
said pusher automatically when thus connected, substantially as described.
71. In a furnace, the combination with a hopper and an inclined grate, of an ash-
pit having inclined side walls, the front wall of the said ash-pit being supported by
truss irons, the said, irons being supported by the cross beams of the furnace structure,
substantially as described.
72. In a furnace, the combination with a hopper and an inclined grate, of an ash-
pit having a discharge duct at its lower end, the front wall of the said ash-pit being
supported by truss irons the said irons resting at their lower ends on the said duct and
at their upper ends against a cross supporting beam, on the front structure of the
furnace, substantially as described.
73. In a furnace, the combination with an ash-pit having a discharge opening, of
ducts for receiving the ashes therefrom, reciprocating pushers mounted therein, means
for connecting the said pushers with mechanical power, and means for changing the
reciprocating movement thus secured from an intermittent motion to a continuous
motion and vice versa, substantially as described.
74. In a furnace, the combination with a suitable ash-pit having a discharge
opening, of a duct for receiving ashes therefrom, a reciprocating pusher mounted in
the said duct and means for reciprocating the said pusher by mechanical power, either
continuously or intermittently, and means for changing from one to the other, sub-
stantially as described.
75. In a furnace, the combination with a reciprocating pusher, for removing the
ashes from the bottom of an ash-pit, of a power shaft for operating the same, means
connecting the power shaft with the said pusher, comprising a rock shaft connected
with the said pusher and a counter shaft connected with the said power shaft, a
connecting rod interposed between the said rock shaft and counter shaft, and means
for raising and lowering the said rod for communicating an intermittent or con-
tinuous motion to the pusher, substantially as described.
76. In a furnace, tlie combination with reciprocating pushers for removing ashes
from the ash-pit, of a power shaft for actuating the same, a rock shaft connected.
with the said pushers, a counter shaft connected with the said power shaft, an arm ·
connecting the rock shaft with a counter shaft, and gearing also operated by the
said counter shaft for intermittently causing the engagement or disengagement of
the said connecting rod with the counter shaft, substantially as described.
77. In a furnace, the combination with reciprocating pushers, of a power shaft for
operating the same, a counter shaft having arms secured thereto and connected with
the said pusher or pushers, a counter shaft also carrying arms, one of which is con-
nected by a link with an arm on the power shaft and the other of which carries a
wrist pin, a connecting rod secured to one of the arms on the rock shaft having a
half bearing formed in its under surface for engaging said wrist pin, a ratchet wheel
mounted in suitable proximity to the counter shaft, a pawl for operating the same,
a worm rotated by the said ratchet and engaging a worn wheel secured to a suitable
shaft, a cam wheel also secured to the said shaft and a trolley carrying arm inter-
posed between the said cam wheel and the underside of the connecting rod, the con-
struction being such that when the trolley carrying arm engages a depression in
the periphery of the cam wheel, it will permit the connecting rod to engage the
wrist pin and thereby communicate motion to the pusher or pushers and when the
trolley carrying arm engages the remaining portion of the cam periphery, the trolley
will lift the said rod out of engagement with the said wrist pin and thus stop the
movement of the pusher or pushers, substantially as described.
78. In a furnace, the combination with a reciprocating pusher, of means for con-
necting the same with a power shaft comprising suitable shafting and a connecting
rod a ratchet and worm mechanism also operated by the power shaft, a cam wheel
supported in the pivoted frame, means operated by the said cam for engaging and
disengaging the said connecting rod to give an intermittent motion to the pusher, a

page_text: hand operated rod supporting the forward end of the pivoted frame and extending
through the floor and means for engaging the floor to hold the rod in its uppermost
position the construction being such that when the rod is lifted an intermittent feed
movement will be communicated to the pushers and when it is dropped, the inter-
mittent connection will be disengaged and a continuous reciprocating motion will
be given to the pushers, substantially as described.
79. In a furnace, the combination with an ash-pit having an inclined floor, of
means for gaining access to the said ash-pit, comprising a pivoted floor interposed
between the main floor and the ash pit doors, and means for raising and lowering
the pivoted floor, whereby the ash-pit may be closed and tightly sealed or may be
opened and the ashes may be pulled out upon the said pivoted floor to the main
floor, substantially as described.
80. In a furnace, the combination with an ash pit having an inclined floor, of a
pivoted floor bridging the space between the outside floor and the front of the furnace
racks secured to the said pivoted floor, and pinions for engaging the said racks,
whereby the floor may be raised or lowered, substantially as described.
81. In a furnace, the combination with an ash pit having an inclined floor, of a
pivoted floor for opening a sufficient space to extract ashes from the ash-pit, the said
pivoted floor having racks depending therefrom, pinions engaging the said racks,
bevel gearing connecting the racks with an ordinary shaft, and hand operating means
secured to the shaft, whereby the floor can be raised or lowered at will, substantially
as described.
".
82. In a furnace, the combination with an ash pit having an inclined floor, of a
hinged floor outside the front of the furnace for sealing the ash-pit at that point in
its raised position and forming a floor over which the ashes may be drawn when in its
lowered position, means for raising and lowering the said floor, and side pieces for
closing the sides of the space opened when the floor is depressed, the said sides
having ledges formed along their lower edges to support the Hoor when down, sub-
stantially as described.
83. In a furnace, the combination with an ash pit having an inclined floor, of a
pivoted floor outside the furnace front, means for raising and lowering the said floor,
the inner free edge of the said floor having a projecting ledge or ridge adapted to
engage a corresponding depression in the upper edge of the ash-pit floor, whereby
when the floor is down a smooth joint will be formed between the same and the said
ash-pit floor, and means for raising and lowering the said floor, substantially as
described.
T
W. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant..