Improvements in Mechanical Stokers and in Apparatus connected therewith for Steam Boiler and other Furnaces.
Year: 1898

page_text: Date of Application, 5th Feb., 1898
Complete Specification Left, 5th July, 1898-Accepted, 5th Nov., 1898
PROVISIONAL SPECIFICATION.
Improvements in Mechanical Stokers and in Apparatus connected
therewith for Steam Boiler and other Furnaces.
I, JAMES HODGKINSON, of West High Street Machine Works, Cross Lane,
Salford, Manchester, in the County of Lancaster, Engineer, do hereby declare the
nature of my said invention to be as follows:-
6:
"
This invention relates to improvements in mechanical stokers and in apparatus
connected therewith for steam boiler and other furnaces, such as, coppers for
boiling liquids, furnaces for melting iron and steel, or, for heating iron, steel,
and other metals, metallic rods, and the like employed in the manufacture of
bolis, nuts, chains, and other materials, pottery furnaces, furnaces for salt pans,
steam boiler and other furnaces. This I effect by providing the framework
carrying the ordinary fire-door with one or more cylindrical or other shaped vessels,
such as, helical cylinders constructed in sections, one end of each section being
blank or shrouded so as to form a pocket, and to cause the fuel to fall vertically
and prevent the same from running to one side or end of section, thereby making
or producing a continuous or absolutely measured feed, and I employ a plate the
bottom of which rests upon and across the top of the sections in an inclined
position so as not to retard the fall of the fuel from hopper to the pockets. The
cylindrical or other shaped vessels are constructed to suit the size or form of the
furnace so as to produce a spiral feed from side to side to give a steady or constant
feed by the measurer. The said cylindrical or other shaped vessels are formed
with open ends through which atmospheric air-heated or otherwise passes with
the fuel when the latter is blown onto the fire or furnace by means of compressed
air, or by means of air from a fan or blower, steam, or air and steam combined.
The cylindrical or other shaped vessel or vessels are disposed above the ordinary
door which allows of firing by hand when desired or necessary. Above the
cylindrical or other shaped vessel or vessels is disposed a rotating measurer pro-
vided with compartments for receiving regular or stated quantities as the same
is rotated. The rotating crusher is operated by a ratchet wheel and "pawl" from
a shaft actuated by an eccentric, crank, or other mechanical equivalents.
The rotating measurer is provided with a shaft or centre mounted in bearings
attached to or formed with the before mentioned cylinder or other shaped vessel
in which it is located or otherwise; the said shaft or centre being provided in any
convenient position with a conical pulley driven by a belt from a conical pulley
mounted on a driving shaft suitably disposed or by any other well known gearing
whereby a variable speed may be obtained. In the case of driving by a belt the
latter may be moved on the conical pulleys by means of a hand lever to regulate
the speed of distribution or by automatic mechanical means from a self-acting
regulator operated according to pressure. On the measurer box is disposed a
hopper or receptacle for receiving fuel, which may be supplied by hand labor, or
from shoots supplied by means of creepers and travelling buckets moving to and
from bunkers or other receptacles into which the fuel has been placed or
"
"

page_text: stored. For the purposes of distribution air and steam are supplied by a nozzle,
blower of especial form, or their equivalents from any convenient source, and may
be regulated by means of any suitable reducing valve, or by means of taps, valves,
dampers, and the like. The blower is fixed in a box in which is a shelf on which
the fuel falls from the aforesaid measurer, and from which it is injected into the
furnace, and evenly distributed over the fire-grate. For the purpose of controlling
and giving an uniform force to the jet distributor I employ a reducing valve
which is set or regulated to the minimum pressure. In another improved form
of fuel distributor I employ a cylinder with three or more blades of especial con-
s'ruction which may be part of or attached to the aforesaid cylinder. This is
constructed to revolve or rotate at any desired speed according to the length of
the fire-grate or furnace, thus spreading the fuel uniformly over the grate surface.
With both the foregoing forms of distributor I employ either self-cleaning fire-
bars, hand rocked, or stationary fire-bars as desired. A deflector plate is provided
for distributing or regulating distribution of the fuel on or over the fire. The
deflector plate is of any desired or necessary form and is adjusted by a screw
from a nut disposed behind the hopper or in any other convenient place. An
important feature of this invention is that when steam is employed for blowing
the fuel on to the fire smoke is destroyed or reduced to a minimum; which is also
effected when steam and air are employed. If desired a moveable or flexible tube
may be employed to give equal distribution from side to side, which may be
substituted by a moveable joint.
Datal the 4th Wahun 1800
Improvements in Mechanical Stokers and in Apparatus connected
therewith for Steam Boiler and other Furnaces.
I, JAMES HODGKINSON, of West High Street Machine Works, Cross Lane,
Salford, Manchester, in the County of Lancaster, Engineer, do hereby declare the
nature of my said invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:--
This invention relates to improvements in mechanical stokers and in apparatus
connected therewith for steam boiler and other furnaces, such as, "coppers " for
boiling liquids, furnaces for melting iron and steel, or, for heating iron, steel,
and other metals, metallic rods, and the like employed in the manufacture of
bolts, nuts, chains, and other materials, pottery furnaces, furnaces for salt pans,
steam boilers and other furnaces. This I effect by providing the framework
carrying the ordinary fire-door with one or more cylindrical or other shaped vessels,
such as, helical cylinders constructed in sections, one end of each section being
blank or shrouded so as to form a pocket, and to cause the fuel to fall vertically
and prevent the same from running to one side or end of section, thereby making
or producing a continuous or absolutely measured feed, and I employ a plate the
bottom of which rests upon and across the top of the sections in an inclined
position so as not to retard the fall of the fuel from hopper to the pockets. The
cylindrical or other shaped vessels are constructed to suit the size or form of the
furnace so as to produce a spiral feed from side to side to give a steady or constant
feed by the measurer. The said cylindrical or other shaped vessels are formed
with open ends through which atmospheric air-heated or otherwise-passes with
the fuel when the latter is blown onto the fire or furnace by means of compressed

page_text: air, or by means of air from a fan or blower, steam, or air and steam combined.
The cylindrical or other shaped vessel or vessels are disposed above the ordinary
door which allows of firing by hand when desired or necessary. Above the
cylindrical or other shaped vessel or vessels is disposed a rotating measurer pro-
vided with compartments for receiving regular or stated quantities as the same
is rotated. The rotating crusher is operated by a ratchet wheel and "pawl" from
a shaft actuated by an eccentric, crank, or other mechanical equivalents.
The rotating measurer is provided with a shaft or centre mounted in bearings
attached to or formed with the before mentioned cylinder or other shaped vessel
in which it is located or otherwise; the said shaft or centre being provided in any
convenient position with a conical pulley driven by a belt from a conical pulley
mounted on a driving shaft suitably disposed or by any other well known gearing
whereby a variable speed may be obtained. In the case of driving by a belt the
latter, may be moved on the conical pulleys by means of a hand lever to regulate
the speed of distribution or by automatic mechanical means from a self-acting
regulator operated according to pressure. On the measurer box is disposed a
hopper or receptacle for receiving fuel, which may be supplied by hand labor, or
from shoots supplied by means of creepers and travelling buckets moving to an
from "bunkers" or other receptacles into which the fuel has been placed or
stored. For the purposes of distribution air and steam are supplied by a nozzle,
blower of especial form, or their equivalents from any convenient source, and may
be regulated by means of any suitable reducing valve, or by means of taps, valves,
dampers, and the like. The blower is fixed in a box in which is a shelf on which
the fuel falls from the aforesaid measurer, and from which it is injected into the
furnace, and evenly distributed over the fire-grate. For the purpose of controlling
and giving an uniform force to the jet distributor I employ a reducing valve
which is set or regulated to a minimum pressure. In another improved form
of fuel distributor I employ a cylinder with three or more blades of especial con-
struction which may be part of or attached to the aforesaid cylinder. This is
constructed to revolve or rotate at any desired speed according to the length ot
the fire-grate or furnace, thus spreading the fuel uniformly over the grate surface.
With both the foregoing forms of distributor I employ either self-cleaning fire-
bars, hand rocked, or stationary fire-bars as desired. A deflector plate is provided
for distributing or regulating distribution of the fuel on or over the fire. The
deflector plate is of any desired or necessary form and is adjusted by a screw
from a nut disposed behind the hopper or in any other convenient place. An
important feature of this invention is that when steam is employed for blowing
the fuel on to the fire smoke is destroyed or reduced to a minimum; which is also
effected when steam and air are employed. If desired a moveable or flexible tube
may be employed to give equal distribution from side to side, which may be
substituted by a moveable joint.
DESCRIPTION OF DRAWINGS.
Fig. 1 Sheet 1-is a front view of my improvements in mechanical stokers
and in apparatus connected therewith for steam boiler furnaces-Fig. 2 a part
sectional elevation of the front end of a Lancashire boiler with my improved
mechanical stoker applied-Fig. 3 a sectional elevation of crusher box with shoot
for supplying each cavity of the rotating crusher independently or in successive
order as the latter rotates Fig. 4 a plan of measuring crusher with straight
divisions and three pockets-Fig. 5 a sectional elevation of Fig. 4 through
line A B Fig. 6 a plan of measuring crusher with helical or angular divisions
with four partitions or pockets-Fig. 7 a sectional elevation of Fig. 6 through
line CD Fig. 8 an outside elevation of my improved circular blower-Fig. 9
a plan of Fig. 8-Fig. 10 an outside elevation of one form of my improved
blower Fig. 11 a sectional elevation through line E F¹ in Fig. 10-Fig. 12 an
outside elevation of another form of my improved blower-Fig. 13 a side and.
part sectional elevation of Fig. 12-Fig. 14-Sheet 2-a front elevation of my

page_text: improved mechanical stoker applied to a marine boiler-Fig. 15 a sectional side
elevation through line G¹ H¹ in Fig. 14-Fig. 16-Sheet 3-a front elevation of
my improved self-cleaning fire-bars applied to the flues of a Lancashire boiler
with my improved mechanical stoker applied-Fig. 17 a plan of fire-bars shown
in Fig. 16 Fig. 18 an elevation of moveable fire-bars K and K' in Fig 17-Fig. 19
an elevation of moveable fire-bars L in Fig. 17-Fig. 20 a part front plan of
moveable fire-bars L¹ in Fig. 19-Fig. 21 a side elevation of moveable fire-bars L
and L in Fig. 17 without jaw ends-Fig. 22-Sheet 4-a plan of hand rocked
fire-bars Fig. 23 a sectional elevation through line M¹ O¹ in Fig. 22-Fig. 24-
Sheet 5-a front elevation of my improved mechanical stoker applied to "coppers'
for boiling purposes--Fig. 25 a side elevation of Fig. 24-Fig. 26-Sheet 6-a front
elevation of my improved mechanical stoker applied to a furnace for heating
metallic rods and the like-Fig. 27 a side elevation of Fig. 26-Fig. 28-Sheet 7-
a front elevation of my improved mechanical stoker on the cylinder and beater
principle applied to a single-flued boiler-Fig. 29 a transverse section through
line C2 D2 in Fig. 28-Fig. 30 an end view of beater with three blades, and Fig. 31
a longitudinal elevation of beater with four blades.
"
In order that my invention may be readily and clearly understood I will now
proceed to describe each sheet of drawings in as succinct a manner as possible,
taking each sheet of drawing in their respective order.
A represents the boiler shell: B boiler flues: C boiler front: E2. stationary
fire-bars; D dead-plate; E smoke-box: F steam pipe; G crusher; H crusher-box;
I hopper J side-bars; K, K, L, and L' movable fire-bars: M rocking fire-bars;
N crusher shaft: 0 fire-bar shaft; P driving shaft; X beater-box; X7 beater,
and beater, shaft.
In all the figures the same letters and mumerals are employed to indicate
corresponding parts.
Sheet 1 The framework Q carrying the ordinary fire-door R is provided with
the cylindrical or other shaped crusher boxes or vessels H in which are mounted
the cylindrical or other shaped vessels, crushers or measurers G constructed in
sections as shown in Figs. 2 to 7 inclusive: the ends of each section being
provided with the end's U to form the pockets W. to cause the fuel received from
the hoppers I to fall vertically and prevent the fuel running to one side or end
of each section or pocket W in the crusher or measurer G, thereby making or
producing a continuous or absolutely measured feed. To prevent the fuel being
emptied from the pockets W in the rotating crusher or measurer G until in the
correct position with the passage or opening H₁ I employ the spring plate G
secured to the inside of the hopper I by the bolt I and nut 15 as shown in Fig. 2.
In the bottom ends of the hoppers I are disposed the plate X: the bottom end
of which rests or sits across the top of the pockets W of the crusher or measurer G
in an inclined position as shown in Fig. 3 so as not to retard or prevent the fall
of the fuel from the hoppers I to the pockets W in the rotating crushers or
measurers G. The cylindrical crushers or measurers G are constructed in length
and diameter to suit the size or form of the furnace to be supplied with fuel so
as to produce a spiral feed from side to side to give a steady or constant supply
of fuel to the same. The crushers or measurers G are mounted on the shaft N
Jocated in the bearings T2, and are held in position by the washers T³ and pins T.
The bottom or lower end of the crusher-box H is provided with the opening H¹
provided with the sliding damper H2 to allow of the regulation of the sunnly of
fuel from the crusher or measurer G to the chamber G³ from whence it is blown
onto the fire or furnace on the bars E by means of compressed air, or by means
of air from any suitable fan or blower, or by means of steam, or air and steam
combined, the nozzles Z for effecting this object being of any of the forms shown
in Figs. 8 to 13 inclusive, i.e. either circular, flat, or with a semi-circular or other
suitable form of outlet E. Below the crusher-box H is disposed the receiving
chamber G into which the crushed fuel falls through the opening H¹, and from

page_text: whence it is blown by steam or air and steam combined issuing from the outlets Es
of the nozzles Z onto the fire on the fire-bars E2. The nozzles Z are coupled to the
pipes Z²; the latter being provided with the valves Z3 and the T piece Z connected
to the boiler front C by the coupling Z³ and pipe Z; the pipe Z being provide.l
or fitted with the stop valve Z. The crusher shaft N is rotated or driven by any
suitable worm or other gearing located in the box No; the said worm or other
gearing being actuated or operated by the band or rope pulleys N driven or rotated
by the band or rope N8 from the band or rope pulleys No mounted on the shaft P
driven or rotated from any convenient or suitable source.
Sheet 2 The framework Q³ is of an increased depth to allow of the back side
being filled with any suitable non-conducting material or substance to prevent the
same being burned or destroyed and to minimise the heat as far as possible which
is very essential in marine stoking owing to the boilers being confined or fixed in
the "hold" of a ship or vessel, as well as that of protecting the firemen as far
as possible in their confined and uncomfortable position when in charge of the
boilers. On the framework Q is secured the framework Q by the bolts Q6;
the said framework Q carrying the ordinary fire-door R, which is provided for
cleaning and other purposes necessary in connection with steam boilers. To the
front side of the fire-door R is hinged the small fire-door S provided with the.
slois S, the latter being provided to admit atmospheric air to aid combustion
and prevent as far as possible the formation of smoke. The framework Q is
provided with the cylindrical or other shaped crusher boxes or vessels H in each
of which is mounted the crusher or measurer G constructed in sections as shown.
in Figs. 2 to 7 inclusive on Sheet 1 of the drawings; the ends of each section
being provided with the ends U to form the pockets W to cause the fuel received.
from the hoppers I to fall vertically and prevent the fuel running or slipping to.
one side or end of each section or pocket W. The crusher or measurer shaft N
is located in the bearings T and is held in position by the washers T and pins T..
The crusher or measurer shaft N is rotated or driven by any suitable worm or
other gearing located in the box No; the said worm or other gearing being
actuated or operated by the band or rope pulleys N driven or rotated by a band,
or rope from any convenient source. The box No carrying the worm and other.
gearing and the pulleys N7 is supported from the pillar Nº. The centre R2 of.
the hinged fire-door R is composed of steam or other suitable metallic tubing, 10
the upper end of which is attached the tube R³ carrying the nozzle Z employed.
for blowing fuel from the receiving chamber G³ onto the fire or furnace on the
fire-bars E2 by means of compressed air, or, by means of steam, or air and steam
combined. The bottom or lower ends of the centres R2 are provided with the.
elbows R which are connected to the pipe Z by the pipes 72, valves and
T piece 7. To the latter is attached the pipe 76 coupling the same with the
steam pipe F. The steam pipe Z6 is fitted with the stop valve for shutting off
steam from the pipe 76 when desired, or when necessary to enable the pipe 76 to
be removed in case it is desired or necessary to open the smoke-box E for cleaning
and other purposes. To facilitate the removal of the pipe 7 with a minimum
of trouble and to expedite the operation of the same the unions V2 are provided.
Sheet 3-The flues B are fitted with the side-bars J secured to the framework Q
and back-bearer Q* in the usual manner; the said side-bars J being provided.
with the air-spaces as shown in Fig. 17. On the back-bearer Q and the
front bearer R* are mounted the moveable fire-bars K and K¹, each fire-bar being
provided with the distance pieces K³ to ensure of an uniform air space being
provided between each bar and for reducing friction when moving. The movable
fire-bars K and K are provided with the jaw ends on which operate the cams (6
mounted on the cam shaft O, and when the fire-bars K are being drawn outwardly
by the cams 0 the intermediate bars L are also drawn outwardly by the cross-
bar c, after which the bars K' are drawn out by the cams 07, the intermediate
bars L being drawn out by the cross-bar d, and as the cams 06 and 07 rotate
with the shaft O they operate on the projections 08 on the lower side of the jaw

page_text: end b which moves all the bars back together by means of the bars c and d, by
which action self-cleaning is effected. The moveable bars L are provided with
the slot or opening to allow of the cross-bar c moving the bars K and L in
advance of the bars K' and L. If desired the bars L may be constructed without
the jaw ends as shown in Fig. 21, the sliding operations of the same being
effected by the rods or bars c and d according to the movements of the bars K
and K¹. If desired the fire-bars L may be provided with the projection 0³
as shown in Figs. 19 and 20, the said projection operating on the bottom end
of the jaw of the bars L', thus taking all the fire-bars back together which is
necessary for self-cleaning purposes. The cam shaft O) is mounted in the bearings f
secured to the framework Q, and the cam shaft is operated by means of the
worm g gearing into the worm wheel h on the shaft O. The worm g is mounted
on the vertical shaft / carrying the gearing in the box No; the whole being
operated or rotated by the band or rope pulleys N by a band or rope driven from
any suitable or convenient source.
Sheet 4-In constructing the improved hand rocked fire-bars M they are pro-
vided with long and short ends 7 and r respectively for the purpose of more
thoroughly breaking up the fire and moving the same from the back end towards
the front end of the boiler. Each hand rocked fire-bar M. is provided with the long
and short ends and reach interlocking or passing freely between in the spaces
of the said ends; the long ends p of one bar being located between the short
ends of the other bar and vice-versa. . The fire-bars M are provided with the
midfeathers N terminating at each end with the circular centres N³. The latter
are mounted in bearings in the fixed bars J provided with the openings or air
spaces a. The side-bars J are securely fixed to the dead-plate d and the bridge-
plate . Each fire-bar M is provided with one or more arms or projections
fitted with the pins or centres on which is mounted the connecting rod d
employed for coupling all the bars M so as to allow of their being rocked together
in the position shown in dotted lines in Fig. 23. The connecting rod d is
connected to the lever by the pin the lever being mounted on the
contre located in the bearing or bearings № on the underside of the dead-
plate. The lever 10 is mounted on the centre and is provided with the
end to allow of the same being operated by a box-ended or other suitable
lever or its equivalent. The bar end or side of the dead-plated and bridge-
plate are each provided with the ends r¹ and t to correspond with those on
the bars M.
manner.
Sheet 5 In constructing and arranging my improved mechanical stoker for
'coppers" for boiling liquids, salt pans, pottery furnaces, biscuit ovens, and the like,
and for furnaces for melting iron and steel, the crusher-box H is fixed to the
metallic framework secured to the brickwork in any convenient or desired
The framework z is provided with the brackets 2 for carrying the
ordinary hand firing furnace door in the usual manner. To the framework z
is secured the crusher-box H provided internally with crushers and measurers
similar to those shown in Figs. 4 to 7 inclusive on Sheet 1 of the drawings; the
said crushers and measurers G being fixed on the rotating shaft N mounted in
the bearings T2 The shaft N is fitted with the ratchet wheel n', which is actuated
by the "pawl" n² pivoted to the upper or outer end of the loosely mounted
lever n³. The boss of the latter is provided with the lever n' on which is mounted
the screwed spindle n being locked by the nut no. On the lever n' and screwed
spindle n is mounted the sliding block n' which may be adjusted in either
direction according to the stroke or movement required by the "pawl" in operating
one or more teeth of the ratchet wheel n¹ at each forward stroke. To the sliding
block 7 is pivoted by the pin or centre n³ the rod n; the other end of the latter
being coupled to the eccentric n10 on the driving shaft P. The hopper I, crusher-
box H, together with the blowing nozzle Z, chamber G³ and pipe 72 are similar
in every respect to those herein before described,

page_text: "
Sheet In constructing and arranging my improved mechanical stoker for
heating metallic rods, the crusher-box H is attached to the plate fixed to the
ordinary furnace by the bolts 3. The crusher-box H is provided internally
with the crushers or measurers similar to those shown in Figs. 4 to 7 inclusive
on Sheet 1 of the drawings, which are mounted on the shatt N located in the
bearings T. The shaft N is fitted with the ratchet wheel n' which is actuated
by the
pawl pivoted to the upper or outer end of the loosely mounted
lever The boss of the latter is provided with the lever n having the slot p
In the slot p is disposed the pin or centre 2 for securing the eccentric rod,
the other end of the latter being coupled to the eccentric no on the driving
shaft P. The hopper I, crusher-box H, and the crusher and measurer are similar
in every respect to those herein before described. Below the crusher-box H is
fixed the tapered vessel y' the outlet end being coupled to the pipe or receiving
chamber or pipe G³ into which the fuel is delivered from the hopper I and crusher-
box H in measured quantities from which it is blown onto the fire or furnace by
steam or air, or steam and air combined from the pipe Z. The pipe Z³ is provided
with the screwed plug Z for the purpose of cleaning the outlet end of the said
pipe.
Sheet 7-The framework Q is provided with the cylindrical or other shaped
crusher-box H in which is mounted the cylindrical or other shaped crushers or
measurers G constructed in sections as shown in Figs. 2 to 7 inclusive in Sheet!
of the drawings: the ends of each section being provided with the ends U to
form the pockets W, to cause the fuel received from the hopper 1 to fall vertically
and prevent the fuel running or sliding to one side or end of each section or
pocket W in the crusher or measurer G; thereby making or producing a continuous
or absolutely measured feed. To prevent the fuel being emptied from the
pockets W in the rotating crusher or measurer G until in the correct position
with the passage or opening H' I employ the spring plate Go to the inside of the
hopper I by the bolt 14 and nut I as shown in Fig. 29. The crusher or measurer G
is mounted on the shaft N located in the bearings T2, and is held in position by
the washers T3. The bottom or lower end of the crusher-box H is provided with
the opening H provided with the sliding damper H² to allow of the regulation
of the supply of fuel from the crusher or measurer G to the rotating beater X
located in the beater-box X from whence it is thrown on to the fire or furnace
on the fire-bars E2 by the blades X of the rotating beater X. The rotating
beater is mounted on the shaft X8 mounted in the bearings X on the ends
of the beater-box X. The outer end of the rotating beater X is fitted with the
strap pulley X driven by the, beli X2 from the pulley X on the shaft P. The
crusher-shaft N is rotated or driven by any suitable worm or other gearing located
in the box No: the said worm or other gearing being actuated or operated by
the band or rope pulleys N driven or rotated by the land or rope N from the
band or rope pulleys N mounted on the shaft P driven or rotated from any con-
venient or suitable source. The furnace side of the beater-box X is provided with
the bearings X in which are mounted the pins or centres X15 carrying the deflector
plate X The latter is provided with the lug X to which is connected the
screwed spindle X18 by the pin X". The screwed spindle X 18 extends upwards
to the outside of the framing Q and is provided with the winged nut X20, by
which the deflector plate X" may be raised or lowered as shown in dotted lines
in Fig. 29 according to the requirements necessary for efficiently distributing the
fuel on the fire or furnace on the fire-bars E2. Although I have shown only one
crusher-box H, beater-box X6, and hopper I in this modification of my invention
I would have it understood that it may be also applied to a double flued boiler
by simply duplicating the crusher-box H, beater-box X6, hopper I, furnace front Q,
and by longthening the beater shaft X8 and crusher or measurer shaft N.
I would have it understood that I do not confine myself to the precise details
or configuration of the parts I have shown and described as the same may be

page_text: varied or modified without departing from the principle of my invention as they
may be constructed and arranged so as to meet the various requirements demanded
by the many kinds of furnaces to which it may be applied.
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. The general arrangements, constructions, and combinations of parts composing
my improvements in mechanical stokers and in apparatus connected therewith
for supplying fuel to steam, Lancashire, marine, and other boilers and other
furnaces, such as, coppers for boiling liquids, furnaces for melting iron and
steel, or for heating iron, steel, and other metals, metallic rods, pottery furnaces,
furnaces for salt pans, and the like, substantially as described and as illustrated
in the annexed drawings.
2. In combination with the crusher-box H, the measurer G with the straight
or angular divisions and pockets W, substantially as described and for the purpose
specified.
3. In combination with the hopper I, crusher-box H and the measurer G with
straight or angular divisions and pockets W, the spring plate G6 applied and
operating substantially as described and for the purpose specified.
4. In combination with the crusher-box H the use and construction of the
chamber G³, and nozzle Z for the purpose specified.
5. The use and construction of the nozzle Z applied and operating substantially
as described and as illustrated in the drawings in Figs. 8 to 13 inclusive for the
purpose specified.
6. The use and construction of the self-cleaning fire-bars and the means and
method of regulating the respective movements of the same, substantially as
described and as illustrated in the drawings in Figs. 16 to 21 inclusive for the
purpose specified.
7. The use and construction of the hand rocked fire-bars M provided with the
projections and r of varying lengths, applied and operating, substantially as
described and as illustrated in the drawings in Figs. 22 and 23 inclusive for the
purpose specified.
8. In combination with furnaces for heating metallic rods and the like the
use of the crusher-box H and measurer G, boxy, pipe Z2, with the means for
operating the same, applied and operating substantially as described and as
illustrated in the drawings.
9. In combination with furnaces for heating "coppers" for boiling liquids, salt
pans, pottery furnaces and the like the use of the crusher-box H and measurer G,
box G3 provided with the nozzle Z, together with the adjustable means for re-
gulating the supply of fuel from the hopper I, the whole being constructed and
operating substantially as described and as illustrated in the drawings.
10. In combination with the crusher-box H the measurer G with the straight or
angular divisions and pockets W, the use of the specially formed beater X'
provided with the blades X, and the adjustable deflector plate X16, the whole being
applied, constructed and operated, substantially as described and as illustrated
in the drawings on Sheet 7.
יב
11
1
1
CT1
1000
EDMUND CHADWICK,
Agent.