Year: 1888

page_text: Date of Application. 17th Jan., 1888
Complete Specification Left, 17th Oct., 1888
Complete Specification Accepted, 23rd Nov.,
1888
I, JOHN WEST of Albion Iron Works, Miles Platting, Manchester, in the County
of Lancaster, Engineer do hereby declare the nature of this invention to be as
follows:
This invention relates to improvements in machinery and apparatus for which
Letters Patent No. 1226 dated January 27th 1886 were granted to me, and has for
its object the application of such additions and modifications as will permit of their
being worked more economically and efficiently than hitherto.
For this purpose I use an endless wire rope to transmit the driving power to the
machines.
The wire rope itself may be driven either by a gas engine, or by a steam engine, or
by any other convenient source of motive power fixed in any suitable part of the retort
house; or the power to be used in driving the machine may be transmitted from
any part of the gas works to the wire rope by any of the known methods for trans-
mitting power.
The general arrangement of the frames and working parts both of the charging
machine and of the drawing machine remains substantially as described in Specifica-
tion 1226-86 and illustrated by the drawings thereto attached; but instead of using
a steam boiler on each machine for supplying the motive power to that machine and
a steam and water cylinder with a rack and pinion working in connection therewith,
I have now invented the following modifications in the working parts necessary to
allow of the use of a wire rope for transmitting the power.
First as regards the arrangement of parts to drive the charging machine.
Upon one side of the machine I fix to the angle iron frame two brackets carrying
two shaft bearings each. These brackets carry two shafts lying parallel to each other,
one bracket with its two bearings supporting the shafts near one end and the other
bracket supporting them near the other end. At one end of one shaft 1 fix a rope
pulley having a grooved rim of special construction to be described hereafter, and to

page_text: the same pulley or shaft I fix a spur wheel having internal or external cogs or teeth.
At one end of the other shaft I fix a spur pinion which gears with the spur wheel just
described, and at suitable positions on this shaft I key two broad belt pulleys. The
wire rope is made to pass once round the grooved pulley so that when the rope is
set in motion the pulley and shaft are revolved and they drive the other shaft with
the two broad pulleys through the agency of the toothed gear.
The rope is stretched over two pulleys one near each end of the retort stack, and
one is arranged so that it can be driven by belts or gearing, or by direct action from
the moter. The rope therefore runs parallel with the face of the retort stack and at
any suitable distance therefrom.
Instead of keying a toothed rack-pinion at one end of the horizontal overhead
shaft as described in my former Specification 1226-86 I now key in its position a
worm wheel which is driven by an endless worm on a shaft lying in a plane at right
angles to that in which the overhead shaft lies.
The shaft to which the endless worm is keyed is supported by brackets that hold
it parallel to the shaft carrying the two broad pulleys; and upon the worm shaft
between the bearings I place three pulleys the two outer of which run loose upon the
shaft while the third and middle one of them is keyed to the shaft.
To this same shaft I also key at any convenient position a brake drum fitted either
with a friction band or a block. The three pulleys on this shaft are arranged in such
a manner as will permit of their being driven by belts from one of the broad pulleys
previously described, the broad pulley being about the same width as the sum of the
widths of the three on the worm shaft, or a little more than three times the width of
the driving belts used. Over one of the loose pulleys I pass a belt which also passes
over the broad pulley and is laced or fastened as an
open" belt, while a " crossed
belt" is made to pass over the other loose pulley and over the same broad
pulley.
"
Now by means of properly arranged belt forks and handles I can cause the worm
shaft to remain stationary while the belts are in motion by keeping each belt on its
own loose pulley, the latter revolving in opposite directions; or I can cause the worm
shaft to rotate in one direction by moving one belt off the loose pulley on to the
fast one; or I can reverse the direction of revolution by applying the other belt to
the fast pulley after the first belt has been drawn back on to its loose pulley.
This can all be done while the broad pulley is revolving constantly in one direction
and the whole combination of fast and loose pulleys, belt forks and handles forms a
belt reversing motion.
Upon the overhead shaft I also fix a small pinion to drive a wheel running loose
on a pin and having tappets for reversing and stopping the gear when necessary at
each end of the stroke of the charger. This was accomplished in my former patent
by the tappets on the rack.
The tappet wheel is also provided with a ring or crown in which there is a notch
or inclined plane for working the friction brake in a manner which will now be described
in connection with a description of the method of working the charger into and out of
the retort.
The wire rope can be used to drive one, two or any number of machines by simply
putting a coil of the rope round the groove pulley on each machine. The wire rope
having been so put on the groove pulley of the charging machine and then being
set in motion by the action of the motor it will be seen that it will cause the groove
pulley to revolve and the gearing connected thereto makes the broad pulley also
revolve and drive both the open and the crossed belts, but since these are held
upon the loose pulleys by the belt forks no motion of the worm shaft ensues.
Suppose now that it is desired to make a stroke or charge with the charger, the
whole machine having previously been adjusted in position before a retort. The
attendant now fills the charger scoop with coal from the adjustable hopper by turning
the handwheel of the feeder box as described in my aforesaid specification 1226-86.
When the scoop is filled with coal the attendant moves the hand lever connected to
"the belt forks and thereby causes one of the belts to move off the outer loose pulley

page_text: on to the middle one which is keyed on the worm shaft. By these means the worm
shaft is made to rotate and the worm drives the overhead shaft through the agency
of the worm wheel keyed thereto. As the overhead shaft is geared to the vertical
shaft and the latter to the chain drum exactly as described in my former specifica-
tion 1226-86, any motion of the overhead shaft will cause a corresponding motion
in the chain drum, and the gearing can be so arranged that in one case by depressing
the hand lever the charger will go into the retort, or it can be equally well arranged
in another case that by an upward motion of the hand lever the same sequence of
motion will follow.
While the overhead shaft is revolving it is also driving the tappet wheel by the
small pinion before described and the ratio of the diameters of the pinion and wheel
is such that the tappet wheel only makes a portion of a revolution while the chain
drum is drawing the charger into the retort. When the charger approaches the end
of its forward stroke one tappet of the tappet wheel comes into contact with a striking
lever, consisting of a long and a short part, connected by means of levers and
gearing with the belt forks. The tappet comes in contact with the long part of the
striking lever and moves the same until the belt fork has moved the belt back to the
loose pulley; the continued motion due to momentum of the parts keeps the tappet
wheel acting upon the striking lever until the latter has moved the other belt on to
the fast pulley, thereby reversing the action of the worm and with it that of the
chain drum so that the charger is stopped, the scoop turned over and the charger
returned to its former position ready for refilling. To prevent the charger from
damaging itself or the suspended frame by coming violently into contact with the
stops fixed to the suspended frame, the friction brake is applied in the following
manner.
When the charger approaches the stops against which it should rest while being
filled with coal a second tappet on the tappet wheel comes in contact with the short
part of the striking lever and moves the same round in the opposite direction to that
in which it moved when the tappet was in contact with the long part of the striking
lever, because the whole action of the machine was reversed by the motion of the
first tappet consequently the tappet wheel now rotates in the opposite direction. This
motion of the striking lever causes the driving belt to return to its loose pulley and
the lengths of the short part of the striking lever and of the tappet are so adjusted
to each other that as soon as the belt has been placed on the loose pulley no further
action of the belt forks takes place because the short part of the striking lever merely
rests against the end of the tappet which is made to a curve struck from the centre of
the tappet wheel.
As soon as the belt is fairly off the fast pulley the notch or inclined plane in the
crown of the tappet wheel allows the brake lever to fall under the action of a weight
thereon or of a spring attached thereto and the weight or spring puts the brake on
and prevents any further motion of the charger by stopping the worm shaft.
It will be understood that the hand lever for manipulating the belt forks partakes
of the various motions imparted to these forks near the ends of the stroke by the
tappets and striking lever and the latter is made to return the handle to its mid
position when the machine has completed its cycle of operations.
At the next stroke the notch or inclined plane in the crown of the tappet wheel
lifts the brake lever and the crown keeps the same off until by the return of the
charger it is desirable to use the brake again by which time the notch has returned to
its former position, and the lever is again allowed to fall causing the brake to act and
stop the motion of the worm without detrimental shock to any part of the machinery.
The tappets come into action at the ends of the full stroke only and if it should be
desirable to make any part of a stroke in either direction it can be done by the hand
lever which works the belt forks.
The other broad belt pulley previously described is used to drive that portion of the
gearing which propels the machine along the rails from one retort to the next or
which hoists the adjustable hopper from tier to tier or lower the same to suit
the work..

page_text: Upon a horizontal shaft lying parallel to the shaft carrying the two broad belt
pulleys are placed two loose pulley's and one fast pulley and belts are passed round
just as previously described for the charger gear, one belt being open and the other
crossed. A hand lever connected to the belt forks in the usual inanner causes the
belts to remain on the loose pulleys or forces one belt or the other on to the fast pulley
according to what it is desirable for the machine to do, either to stand still while a
charge is being made or to move in either direction at the discretion of the attendant.
On the horizontal shaft a bevel pinion is keyed which gears with a bevel wheel on a
vertical shaft. The vertical shaft has a square upon it and drives a sliding clutch
made to fit the square. The clutch can be put in gear with a worm gearing with a
worm wheel on one of the axles of the machine or it can be lifted out of action
altogether, or it can be put into gear with another clutch driving a set of wheels and
a chain barrel for hoisting or lowering the adjustable hopper substantially as described
in my former specification 1226-86. The belt reversing gear described herewith
takes the place and performs the work of the reversing engine alluded to in my
aforesaid specification.
The groove in the specially constructed rope pulley is made in the following way.
Having decided which way the wire rope is to run I form the bottom of the groove
slightly curved and taper so that the diameter near one flange is less than that near
the other; the angle between a line drawn perpendicular to the plane of the pulley
and a tangent to the curve at the middle of the groove being less than the "angle of
repose" for the materials of which the rope and the
then placed round the pulley with the "coming on
groove are made. The is
rope
part of the rope on the high
side of the groove and the "going off" part of the rope on the low side. As the rope
goes completely round the pulley it must necessarily go round it in a slightly spiral
manner to allow one part of the rope to pass the other. On a flat bottomed groove
the lead given to the rope by the spiral twist would cause the rope to run tight
against one flange and one part would have a tendency to mount the other so that
great friction and wear would be caused. But I overcome the tendency to run
towards one flange by the tendency to run back given by the taper and thus the two
parts of the rope will run side by side without unduly pressing against each other or
against the flanges.
I arrange for the taper to gradually increase from the low side of the groove to
the high so that the actual form of the bottom of the groove is a curve convex towards
the axis of the pulley.
My invention relates in the second place to the modifications in the parts of the
drawing machine.
The general arrangement of the parts of the drawing machine remain substantially
as described in my specification 1226-86 except that the boiler and steam and water
cylinder are not required but instead of them I may make use of the whole arrange-
ment of parts exactly as herein-before described for the charging machine. Or by
arranging the belts to drive horizontally across the top of the drawing machine
instead of vertically down the side, can dispense with the overhead shaft by
bringing the vertical shaft to the same side of the machine as the hand levers and
substituting for the bevel wheel at the top of the vertical shaft a worm wheel and a
tappet pinion running horizontally. The diameters of the pulleys also require to be
altered as the drawing rake gear requires to work faster than the charger gear.
The operation of drawing a retort is as follows.
Having adjusted the machine in front of the retort and at the proper height for
drawing it the attendant moves the hand lever in that direction which causes the belt
to drive the worm shaft in such a direction as shall cause the worm wheel to rotate
the vertical so that the chain drum winds up the chain which draws the rake bar
along the guide frame and into the retort. The rake head is kept above the coke
while going into the retort by means of the rocking lever described in my former
specification 1226-86. As soon as the rake bar has reached a point of its stroke
near the extremity the tappet on the tappet wheels comes into contact with the long
part of the striking lever exactly as described for the charging machine the rocking

page_text: lever then depresses the rake head into the coke and the reversal of the motion by the
action of the tappet wheel brings the rake bar and with it the coke out of the retort.
To prevent too violent contact between the crosshead of the rake bar and the stops in
the guide frame at the end farthest from the retort the same arrangement of brake
and tappet gear is used as for the charging machine and the action thereof is
precisely the same for both machines. It is frequently necessary and convenient to
make short strokes with the rake bar; this is easily done by using the hand lever of
the belt reversing gear before the tappets come into action at either end of the stroke
but the manipulation of the belts between the ends of the stroke by the hand lever
does not upset the complete action of either of the tappets should the attendant neglect
to move the hand lever at the proper time for preventing detrimental shocks between
the rake bar and the stops.

page_text: Improvements in Machinery or Apparatus for Charging and
Drawing Gas Retorts.
I, JOHN WEST of the Albion Iron Works, Miles Platting, Manchester, in the
County of Lancaster, Engineer, 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 :-
This invention relates to improvements in machinery and apparatus for which
Letters Patent No. 1226 dated January 27, 1886 were granted to me, and has for
its object the application of such additions and modifications as will permit of their
being worked more economically and efficiently than hitherto.
For this purpose I use an endless wire rope to transmit the driving power to the
machines.
The wire rope itself may be driven either by a gas engine, or by a steam engine, or
by any other convenient source of motive power fixed in any suitable part of the
retort house, or the power to be used in driving the machines may be transmitted
from any part of the gas works to the wire rope by any of the known methods for
transmitting power.
The general arrangement of the frame and working parts both of the charging
machine and of the drawing machine remains substantially as described in my
specification No. 1226 dated January 27, 1886 and illustrated by the drawings thereto
attached, but instead of using a steam boiler on each machine for supplying the
motive power to that machine and a steam and water cylinder with a rack and pinion
working in connection therewith, I have now invented the following modifications in
the working parts necessary to allow of the use of a wire rope for transmitting the
power.
In the accompanying drawings Fig. 1 represents a side elevation of the machine
for charging the retorts, Fig. 2 an end elevation and Fig. 3 a plan of the same
machine. Fig. 4 represents a side elevation of the machine for drawing the coke out
of the retorts, Fig. 5 an end elevation, and Fig. 6 a plan of the same machine. Fig. 7
is an elevation and Fig. 8 a plan drawn to a larger scale, of the tappet arrangement
for reversing or stopping as the case may be that part of the drawing machine called
the rake, at or near the ends of its stroke; the tappet arrangement for performing
the same operations upon the charger of the charging machine acts in an exactly
similar manner, and the arrangement of parts is substantially the same.
First as regards the arrangement of parts to drive the charging machine.
Upon one side of the machine Figs. 1, 2, and 3 I fix to the angle iron frame two
brackets A carrying two shaft bearings each. These brackets carry two shafts B and C
lying parallel to each other, one bracket with its two bearings supporting the shafts
near one end and the other bracket supporting them near the other end. At one end
of the shaft CI fix a rope pulley D having a grooved rim of special construction as

page_text: shown at Fig. 9 and to the same pulley or shaft I fix a spur wheel E having internal
or external cogs or teeth. At one end of the shaft B I fix a spur pinion F which
gears with the spur wheel just described, and at suitable positions on this shaft I key
two broad belt puileys G and H. The wire rope I is made to pass once or several
times round the grooved pulley D so that when the rope is set in motion the pulley D
and shaft Care revolved, and they drive the shaft B with the two broad
pulleys Gand H through the agency of the toothed wheel and pinion E and F.
The rope I which is in one endless length is stretched over pulleys fixed in the
retort house at any convenient position near each end of the retort stack, and one is
arranged so that it can be driven by belts or gearing, or by direct action from the
motor. The rope therefore runs parallel with the face of the retort stack and at any
suitable distance therefrom.
Instead of keying a toothed rack pinion at one end of the horizontal overhead
shaft as described in my former specification No. 1226, 1886. I now key in its
position a worm wheel J which is driven by an endless worm on a shaft K lying in
a plane at right angles to that in which the overhead shaft Q lies.
The shaft K to which the endless worm is keyed is supported by brackets L. that
hold it parallel to the shaft B carrying the two broad pulleys G and H and upon the
worm shaft K between the bearings I place three pulleys M, N, O, the two outer of
which Mand N run loose upon the shaft while the third and middle one 0 of them
is keyed to the shaft K. To this same shaft I also key at any convenient position a
brake drum P fitted either with a friction band or a block. The three pulleys M N
and O on this shaft K are arranged in such a manner as will permit of their being
driven by bells from one of the broad pulleys H previously described, the broad pulley H
being about the same width as the sum of the widths of the three M, N, O, on the
worm shaft, or a little more than three times the width of the driving belts used.
Over one of the loose pulleys H I pass a belt which also passes over the broad
pulley N and is laced or fastened as an open belt" while a crossed belt is made to
pass over the other loose pulley M and over the same broad pulley H.
"
Now by properly arranged belt forks and handles, I can cause the worm shaft K
to remain stationary while the belts are in motion by keeping each belt on its own
loose pulley, the two latter revolving in opposite directions; or I can cause the worm
shaft to rotate in one direction by moving one belt off the loose pulley H on to the
fast one O, or I can reverse the direction of revolution by applying the other belt to
the fast pulley O, after the first belt has been drawn back on its loose pulley. This
can all be done while the broad pulley H is revolving constantly in one direction,
and the whole combination of fast and loose pulleys, belt forks and handles forms
a belt reversing motion.
Upon the overhead shaft QI also fix a small pinion R to drive a wheel S running
loose on a pin and having tappets a and b Figs. 7 and 8 for reversing and stopping
the gear when necessary at each end of the stroke of the charger. The tappet
wheel S is also provided with a crown or projection c which goes partly round the
circumference for working the friction brake in a manner which will now be described
in connection with a description of the method of working the charger into and out
of the retort.
The wire rope I can be used to drive one, two, or any number of machines by
simply putting a coil or coils of the rope round the groove pulley D on each
machine. The wire rope having been so put on the groove pulley of the charging
machine and then being set in motion it will be seen that it will cause the groove
pulley D to revolve and the gearing connected thereto makes the broad pulley H
also revolve and drive both the open and the crossed belts, but since these are held
upon the loose pulleys M and N by the belt forks no motion of the worm shaft K
ensues.
Suppose now that it is desired to make a stroke or charge with the charger d, the
whole machine having previously been adjusted in position before a retort. The
attendant now fills the charger scoop with coal from the adjustable hopper T by
turning the hand wheel e of the feeder box as described in my specification

page_text: No. 1226, 1886. When the scoop is filled with coal, the attendant moves the hand
lever U connected to the belt forks and thereby causes one of the belts to move off
the outer loose pulley on to the middle one O which is keyed on to the worm shaft K.
By these means the worm shaft K is made to rotate and the worm drives the over-
head shaft Q through the agency of the worm wheel J keyed thereto. As the over-
head shaft is geared to the vertical shaft V and the latter to the chain drum W exactly
as described in my specification No. 1226, 1886, any motion of the overhead shaft Q
will cause a corresponding motion in the chain drum W, and the gearing can be so
arranged that in one case by depressing the hand lever U the charger d will go into
the retort, or it can be equally well arranged in another case that by an opposite
motion of the hand lever U the same sequence of motion will follow.
While the overhead shaft Q is revolving it is also driving the tappet wheel S by the
small pinion R before described and the ratio of the diameters of the pinion R and
wheel S is such that the tappet wheel S only makes a portion of a revolution while
the chain drum W is drawing the charger into the retort.
When the charger approaches the end of its forward stroke one tappet a Figs. 7
and 8 of the tappet wheel S comes into contact with a striking lever f consisting of a
long part g, a short part h and a tail i. The lever is connected by means of
levers and connecting rods with the belt forks. The tappet a comes in contact
with the long part g of the striking lever f and moves the same until the belt fork
has moved the belt back to the loose pulley; but the continued motion due to
momentum of the revolving parts keeps the tappet wheel S acting upon the striking
lever until the latter has moved the other belt on to the fast pulley O thereby
reversing the action of the worm and with it that of the chain drum W so that
the charger d is stopped, the scoop turned over and the charger is then drawn back
to its former position ready for refilling. To prevent the charger from damaging
itself or the suspended frame j by coming violently into contact with the stops
fixed to the suspended frame, the friction brake P is applied in the following
manner.
When the charger approaches the stops against which it should rest while being
filled with coal a second tappet 6 Figs. 7 and 8 on the tappet wheel S comes in
contact with the short part h of the striking lever f and moves the same round in the
opposite direction to that in which it moved when the tappet a was in contact with the
long part g of the striking lever f, because the whole action of the machine was reversed
by the motion of the first tappet a, consequently the tappet wheel S now rotates in
the opposite direction. This latter motion of the striking lever f causes the driving
belt to return to its loose pulley and the lengths of the short part of the striking
lever and of the tappet 6 are so adjusted to each other that as soon as the belt has
been placed on the loose pulley no further action of the belt forks takes place, because
the short part of the striking lever f merely rests against the end of the tappet
which is made to a curve struck from the centre of the tappet wheel S.
As soon as the belt is fairly off the fast pulley the gap in the projection or crown c
Figs. 1, 2, 3, 7 and 8 of the tappet wheel S allows the brake lever X to fall under
the action of a weight thereon or of a spring attached thereto, and the weight or
spring puts the brake on and prevents any further motion of the charger by stopping
the worm shaft K.
It will be understood that the hand lever U for manipulating the belt forks partakes
of the various motions imparted to these forks near the ends of the stroke by the
tappets a or band striking lever f and the latter is made to return the handle to
its mid-position when the machine has completed its cycle of operations. When the
handle is in the mid-position the belts are each running on the loose pulleys Mor N
and no further action of the gear takes place until the handle is moved again by the
attendant.
At the next stroke the attendant moves the hand lever U Fig. 2 in such a direction
as causes the short part h of the striking lever f Figs. 7 and 8 to move out of contact
with the end of the tappet b, and the tail piece i moving in conjunction with the rest of
the striking lever bears against the inclined part k of the lifting lever l. Any motion

page_text: As
7
of the tail piece i in the direction of the incline k will lift the lever and with it the
brake lever X up and will thereby release the brake off the brake pulley P. A
further motion of the hand lever U Figs. 1, 2 and 3 in the same direction causes one
of the belts to pass from the loose pulley M or N as the case may be, on to the fast
pulley O. This causes the overhead shaft to revolve as hereinbefore described.
soon as the overhead shaft begins to revolve it drives the tappet wheel S Figs. 1, 2,
and 8 by the pinion R and thus brings the projection or crown c under the side
stop m fixed to the lifting lever / Figs. 7 and 8. The side stop m resting upon the
crown c holds the lifting lever I and with it the brake out of action even if the tail
piece of the striking leverf is moved out of contact with the incline k, as it would
be when making short strokes with the machine.
The tappets a and b are so arranged on the tappet wheel S that they only come in contact
with the parts of the striking lever f near each end of the full stroke and the crown c
only allows the brake lever to fall when the charger is near the position for filling.
At all the intermediate positions the levers are quite free so that any intermediate
length of stroke in either direction can be made if desirable.
The broad belt pulley G previously described is used to drive that portion of the
gearing which propels the machine along the rails from one retort to the next,
or which hoists the adjustable hopper from tier to tier or lowers the same to suit the
work.
Upon a horizontal shaft Y Figs. 1, 2 and 3 lying parallel to the shaft B carrying
the two broad belt pulleys G and H, are placed two loose pulleys Z, 1, and one fast
pulley 2. and belts are passed round just as previously described for the charger gear,
one belt being open and the other crossed. A hand lever 3 connected to the belt forks
in the usual manner causes the belts to remain on the loose pulleys Z and 1, or forces
one belt or the other on to the fast pulley 2, according to what it is desirable for the
machine to do, either to stand still while a charge is being made or to move in either
direction at the discretion of the attendant. On the horizontal shaft Y a bevel pinion 4
is keyed which gears with a bevel wheel 5 on a vertical shaft 6. The vertical shaft
has a square upon it and drives a sliding clutch 7 inade to fit the square.
clutch 7 can be put in gear with a worm 8 gearing with a worm wheel 9 on one of
the axles 10 of the machine or it can be lifted out of action altogether or it can be put
into gear with another clutch 11, driving a set of wheels 12 and a chain barrel 13 for
hoisting or lowering the adjustable hopper T.
The
The groove in the specially constructed rope pulley is made in the following way.
Having decided which way the wire rope is to run I form the bottom of the groove slightly
curved and taper so that the diameter near one flange is less than that near the other, the
angle between a line drawn perpendicularly to the plane of the pulley and a tangent
to the curve at the middle of the groove being less than the "angle of repose" for the
materials of which the rope and the groove are made. The rope is then placed round
the pulley with the "coming on" part of the rope on the high side of the groove and
the "going off" part of the rope on the low side. As the rope goes completely round
the pulley it must necessarily go round it in a slightly spiral manner to allow one part
of the rope to pass the other. On a flat bottom groove the lead given to the rope by
the spiral twist would cause the rope to run tight against one flange, and one part of
the rope would have a tendency to mount the other so that great friction and wear
would be caused. But I overcome the tendency to run towards one flange by the
tendency to run back given by the taper and thus the two parts of the rope will run
side by side without unduly pressing against each other or against the flanges. I
arrange for the taper to gradually increase from the low side of the groove to the
high side, so that the actual form of the bottom of the groove is a curve convex towards
the axis of the pulley.
My invention relates in the second place to the modifications in the parts of the
drawing machine. The general arrangements of the drawing machine remain
substantially as described in my specification No. 1226. 1886 except that the boiler and
steam and water cylinder are not required, but instead of them I inay make use of the
whole arrangement of parts exactly as herein before described for the charging machine.
13

page_text: .
Or by arranging the belts to drive horizontally across the top of the drawing machine
instead of vertically down the side, I can dispense with the over-head shaft Q by
bringing the vertical shaft V Figs. 4, 5, and 6 to the same side of the machine as the
hand levers and substituting for the bevel wheels at the top of the vertical shaft a
worm wheel J and a tappet pinion R running horizontally. The diameters of the
pulleys also require to be altered as the drawing rake gear requires to work faster than
the charger gear.
The operation of drawing a retort is as follows. Having adjusted the machine in
front of the retort and at the proper height for drawing it, the attendant moves the
hand lever U in that direction which causes the belt to drive the worm shaft. K in
such a direction as shall cause the worm wheel J to rotate the vertical shaft V, so that
the chain drum W winds up the chain which draws the rake bar along the guide
frame 15, and into the retort. The rake head 16 is kept above the coke while going
into the retort by means of the rocking lever 17 described in my specification
No. 1226, 1886. As soon as the rake bar has reached a point of its stroke near the
extremity, the tappet a Figs. 7 and 8 and 4, 5, 6, on the tappet wheel S comes into
contact with the long part of the striking lever f exactly as described for the
charging machine. The rocking lever 17 is manipulated to depress the rake head 16
into the coke and the reversal of the motion by the action of the tappet wheel brings
the rake bar and with it the coke out of the retort. To prevent too violent contact
between the crosshead of the rake bar and the stops in the guide frame at
that end farthest from the retort, the same arrangement of brake and tappet
gear is used as for the charging machine, and the action thereof is precisely the same
for both machines. It is frequently necessary and convenient to make short strokes
with the rake bar. This is easily done by using the hand lever of the belt
reversing gear before the tappets come into action at either ends of the stroke, but
the manipulation of the belts between the ends of the stroke by the hand lever does
not upset the complete action of either of the tappets at the proper time for preventing
detrimental shocks between the rake bar and the stops.
As regards the arrangement of the parts of the drawing machine in the modified
form shown on Figs. 4, 5, and 6 they are as follows, the letters of reference and
other marks being the same for similar parts as on the charging machine. The
brackets A Figs. 4, 5 and 6 carry the two shafts B and C. The shaft C carries the
rope pulley D and the internal geared wheel_E. At one end of the shaft B is keyed
the spur pinion F gearing with the wheel E, this shaft also carries the two broad
pulleys G and H. The worm wheel J is keyed on the vertical shaft V, instead of
using a horizontal overhead shaft as formerly described. This vertical shaft is driven by
an endless worm on the shaft K supported by brackets L and A. Upon the worm
shaft K are placed three pulleys M, N, O, the two outer of which M and N run loose
on the shaft while the middle one O is keyed fast thereto. The pinion R is keyed to
the vertical shaft V and the wheel S which is driven by it runs loose upon a pin and
carries tappets as described before. The projection or crown e of the tappet wheel S
acts upon the side stop m of the lifting lever and keeps the brake lever X out of
action except at one end of the stroke. The tail piece i of the striking lever lifts the
lever up at the commencement of the stroke by means of the incline k, thus releasing
the friction brake P. The hand lever U is connected by levers and connecting rods
to the above mentioned striking gear and is used for manipulating the same as
described in connection with the charger gear.
The broad pulley G is used to drive that portion of the gear which propels the
machine along the rails from one retort to the next, or which hoists the guide frame 15
from tier to tier, or lowers the same to suit the work upon the horizontal shaft Y.
Lying parallel to the shaft B are placed two loose pulleys Z, 1, and one fast pulley 2 and
belts are placed round them just as previously described for the charger gear, one belt
being open and the other crossed. A hand lever 3 connected to the belt forks in the
usual manner causes the belts to remain on the loose pulley Z and 1, or forces one or
the other on to the fast pulley 2. On the horizontal shaft Y a bevel pinion 4 is keyed
which gears with a bevel wheel 5 on a vertical shaft 6. This shaft lias a square on it

page_text: and drives a sliding clutch 7 made to fit the square. The clutch 7 can be put into
gear by a hand lever with a worm 8 gearing with a worm wheel 9 on one of the
axles 10 of the machine, or it can be lifted out of action altogether or it can be put in
gear with another clutch 11, driving a set of wheels and a chain barrel 20 for hoisting
the guide bar frame. The tank 21 forms a receptacle for water which is used through
the flexible pipe 26 for keeping the rake bar cool.
It will be understood that the modification of the parts as described above for
Fig. 4, 5 and 6 can be equally well applied to the charging machine when
desirable.
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 tappet wheel S with its tappets a and b and crown c, together with the
striking lever and the brake P, working in conjunction with the lifting lever 1, as
shown in Figs. 7 and 8, for the purpose of reversing or stopping the motion of the
charger, or of the rake bar as the case may be.
2. The rope pulley D and the belt reversing apparatus for driving the charger into
or out of the retorts by means of the worm and worm wheel J, and the gearing thereto
attached as shown in Figs. 1, 2 and 3.
3. The rope pulley D and the belt reversing apparatus for driving the rake bar
into or out of the retorts by means of the worm and worm wheel J and the gearing
thereto attached as shown in Figs. 4, 5 and 6.
4. The rope pulley D and the belt reversing apparatus for propelling the
charging machine backwards and forwards in front of the retort by means of the
gearing 4 and 5, the clutches 6 and 7 and the worm and wheel and 9 as shown in
Figs. 1, 2, and 3.
5. The rope pulley D and the belt reversing apparatus for propelling the
drawing machine backwards and forwards in front of the retorts by means of the
gearing 4 and 5, the clutches 6 and 7 and the worn and wheel 8 and 9 as shown in
Figs. 4, 5 and 6.
6. The clutch 11 with the worm and wheel gearing 12 to drive the hoisting
gear 13 by which the hopper and suspended frame T and j of the charging machine
are adjusted to the varying heights of the retorts as shown in Figs. 1, 2 and 3.
7. The clutches 11 with the worm and wheel gearing to drive the chain barrel 20
by which the guide frame 15. of the drawing machine is adjusted to the varying heights
of the retorts as shown in Figs. 4, 5 and 6.
8. The whole of the parts referred to in the before mentioned claims, combined,
and arranged as herein described and shown on the drawings.
W. H. BENNETT,
Agent for the Applicant.