Improvements in and relating to Apparatus for Withdrawing Coke from Ovens and for similar purposes.
Year: 1890

page_text: Date of Application, 22nd Sept., 1890-Accepted, 20th Dec., 1890
COMPLETE SPECIFICATION.
[Communicated from abroad by NATHANIEL OLIVER GOLDSMITH, of Cincinnati,
County of Hamilton, State of Ohio, United States of America.]
Improvements in and relating to Apparatus for Withdrawing Coke
from Ovens and for similar purposes.
I, WILLIAM ROBERT LAKE of the firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings in the County of Middlesex, 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 a new and improved device for drawing coke out of
ovens.
It comprises a driving device operated by an engine, preferably mounted upon a
car which can be run back and forth in front of the oven, having an oscillating
table, upon which is mounted the guides for the reciprocating arm carrying the
pulling claws, with suitable mechanism for stopping, starting, tilting and swinging
the reciprocating claw arm in a horizontal and in vertical planes, all of which is
done with power furnished by the boiler.
The various features of my invention are fully set forth in the description of the
accompanying drawings making a part of this Specification, in which-
Fig. 1 is a side elevation, part of the frame being broken away to show the
operating mechanism.
Fig. 2 is a top plan view.
Fig. 3 is a view partly in section, and partly in elevation, showing more specially
that part of the mechanism which raises and lowers the rake arm.
Fig. 4 is a plan view of the same.
Fig. 5 is an end view partly in section, showing the rake arm holding
mechanism.
Figs. 6 and 7 are details of the same.
Fig. 8 is an end view in opposite direction from that of Fig. 5, and
Fig. 9 is a section through line x, x, Fig. 2, looking to the left.
Fig. 10 is a detail view of the clutch mechanism for throwing the rocking
mechanism out of gear.
The same letters and numbers on the different sheets of these drawings refer to
similar parts of the mechanism.
In Fig. 1, A represents a steam boiler equipped with all necessary parts for
safety and continuous working. B represents a water tank from which the boiler A
is supplied. C represents a piston steam valve, shown in section Fig. 3. D a steam
pipe supplying the engine with steam from the boiler A. E represents the
engine preferably of the three cylinder type, bolted to the frame F. The driving
nechanism of this engine is not shown as it may be of any desired form of construc
tion, the three-cylinder type however, being the most compact. 7, 7, represent a
handle for operating the steam valves of the engine E. Frepresents the frame
upon which the different parts of the machine are supported, and which is mounted
on wheels 13, which travel on the rails r. G represents a spur pinion, having
at one end clutch teeth, and free to revolve on the shaft K, which is the crank
shaft of the engine.
H represents a clutch which is free to slide along the shaft K but revolves with
it by means of a key or feather. On the end nearest the pinion G are clutch teeth
which are the counterpart of those on G by means of which the pinion G may be
locked with the clutch H and revolve with it. On the other end of this clutch is a
male part of the friction clutch which fits into the cup of the chain wheel I. This
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page_text: chain wheel I is loose on the shaft K, but can be engaged and revolved by means
of friction clutch H. J represents the end bearing for the shaft K, and is bolted
to the frame F. L represents a lever keyed to the shaft M, which shaft has
bearings N' and N". On this shaft M is also keyed a forked arm e swiveled to the
clutch H and by means of which it may be moved along the shaft K, so as to
engage or disengage the clutch teeth with either member G¹ or I. The bearing N₁
has a segmental projection with notches into which the catch / fits, so as to lock
the lever L into any position it may be thrown. f represents a latch lever for
lifting the catch from the notches. represents a chain wheel keyed on the
shaft P, which has a bearing 66 fastened to the frame F. Q represents a worm
also keyed
on the shaft P. The worm Q meshes with the worm wheel R which is
keyed on the axle 14 shown in plan Fig. 2, and in end view Fig. 8. 13 represents
car wheels on the axles 14 which support the frame F and carry the same on the
rails r.
57 is a shaft having bearings on frame F, upon which is fastened the spur
wheel S and the bevel pinion U. h is a transmitting gear fastened to the shaft i
and journaled on bearings b. This gear h meshes with the pinion G and the spur
gear S so that the shaft 57 will be revolved with shaft K. On the shaft 57 is a
loose chain wheel 18, and friction clutch 67 which is free to slide along the shaft,
but revolves with it by means of a feather let into the shaft 57.
V represents a bevel gear meshing with the bevel pinion U, and keyed to the
shaft 11, which passes through turntables 64 and 65, and also through the oscil-
lating table T, and has at its upper end a bevel pinion W which is fastened to it.
W meshes with a bevel gear X which is keyed to the shaft Y, which has bearings 16
fastened to the oscillating table T. Z represents a gear keyed to the shaft Y and
meshing in rack 42. The table T is free to move in a vertical plane turning on
the shaft 11 as a pivot and supported by the conical rollers 10 which ride on the
faces of the turntables 64 and 65, and at the opposite end by the wheels 20 which
ride on the guide tram rail 19. On the oscillating table T is also fastened a frame 15
which supports a cylinder 1, and two fluid cylinders 2. See Fig. 3.
The steam cylinder 1 is connected to the valve C by means of flexible steam
pipes c and d; c taps the upper end of the steam cylinder 1, and d taps the lower
end of said cylinder.
The upper and lower ends of the fluid cylinders 2 are connected by means of
pipes 4, in which is placed a throttle valve 3, shown in Fig. 1. The steam cylinder 1
has a piston rod 5, the upper end of which is attached to the piston rods 6, of the
fluid cylinders, by means of the yoke 7, and on the lower end is fastened a yoked
frame 31, as shown in Fig. 3.
On the piston rod 5 is also the piston 29, sliding in the steam cylinder 1. The
piston rods 6 have pistons 30 sliding in the fluid cylinders 2.
The valve C which has a connection 38 with the boiler A contains two pistons 37,
fastened to the stem 34. These pistons 37 have ports 36 through which the steam
is free to pass.
35 represents exhaust ports of the valve C. In Fig. 9, 8 represents
a lever keyed to the shaft 39, which has bearings 40 and 68 fastened to the frame F.
53 represents a link connecting the valve stem 34 with the bell crank 52, which
oscillates on the shaft 55, supported on bearings 69 also fastened to the frame F.
54 represents a counter weight attached to the bell crank 52. 51 a link connecting
the lever 8 with the bell crank 52. 9 represents a seat for the operator. 70 repre-
sents a locking device fitting into the notches of the segment 40, and holding the
lever 8 in its different positions.
t represents a treadle pivoted to a bearing 61, attached to the frame F, having at
its lower end a spring 58, and a bevel face 62. 59 represents a yoked arm swiveled
to clutch 67 and pivoted to the bearing 60, attached to the frame F. On the
opposite end of the yoked arm 59 is a bevel face, which fits the bevel face 62 of the
treadle t. The yoked arm 59 moves the friction clutch 67 along the shaft 57, when
the treadle t is pressed to the left. Between the turntable 64, which is bolted to
oscillating table T, and turntable 65, which is fastened to the frame F, are rollers 10,
shown in Figs. 2 and 5.

page_text: These rollers revolve on the pins 71, and support the oscillating table T at
one end.
19 represents a tram guide rail fastened to the frame F, upon which wheels 20
revolve on axles 21, which are attached to the table T. 17 represents rubber
bumpers, one of which is attached to the table T, and the other to the frame 15,
shown in Fig. 3, which are cushioned against which the yoked frame 31 strikes to
limit the upward or downward movement of frame 31. 25 represents a curved rack
bolted to the oscillating table T, shown in Fig. 2.
23 represents a spur wheel meshing in the rack 25 and keyed to shaft 24, on
which is also keyed a worm wheel 22, which meshes with the worm 26, which is
fastened to shaft 27, to which the chain wheel 28 is also fastened. The shaft 24
and also shaft 27 have bearings which are attached to the frame F, shown in Figs. 2
and 5. The chain wheel 28 is connected to the chain wheel 18 by means of chain 72,
as shown in Fig. 2.
In Fig. 5, 41 represents the rake arm, on the outside of which is attached a rack 42,
and at one end is attached the pulling claws 50, by means of the bracket 49.
On the shaft Y are two swivelling frames 46 which are free to oscillate, and which
carry the guide rollers 47 and 48, which revolve on pins 73 and 74. These guide
rollers 47 and 48 form antifriction journals for the rake arm 41 and allow it to move
freely back and forth. It can be swung in a vertical plane because the frames 46
can turn on shaft Y. These rollers are shown in section in Fig. 7. To the yoked
frame 31 is attached frames 43 by means of the stud 68.
44 and 45 represent guide rollers which are free to revolve on the pins 75 and 76,
which are attached to the frame 43, and which also allow the rake arm 41 to move
freely back and forth and to move in a vertical plane, the frames 43 and 46 oscil-
lating on their respective journals. The yoked frame 31 has guides 33, shown in
Figs. 3 and 5, which move vertically on the rods 32, which are supported by the
frame 15, and the oscillating table T.
Mode of operation: By looking at Fig. 1, it will be seen that by throwing the
lever L to the left, the chain wheel I will be locked to the clutch H by means of
the friction clutch faces. This will allow the operator to drive the worm Q and
revolve the axle 14, by means of the worm wheel R, and move the machine back
and forth on the track by means of the reversing lever 77, which arranges the
valves of the engine E so that the crank shaft K shall revolve in either one direction
or the other. I thus provide a self-propelling machine and at the same time the
worm Qlocks the wheel R and keeps the machine from moving when the pressure
of the rake on the coke would tend to move the machine on the track rails r. If
on the contrary he throws the handle L to the right, the clutch H becomes
disengaged from the chain wheel I, and is locked to the pinion G, by means of the
clutch face, and when the shaft K revolves, the spur pinion G drives the
transmitting gear h, which in turn drives the gear S, which revolves the shaft 57
and turns the bevel pinion U, the bevel wheel V, the shaft 11, the bevel pinion W,
and the bevel wheel X, the shaft Y, the spur wheel Z, which moves the rake
arm 41, by means of the rack 42. This will run the rake arm 41 into the oven but
by reversing the engine by means of lever 77 the direction of the movement of the
rake arm will be reversed and it will come out of the oven. By throwing the
lever 8, Fig. 9, to the left, the pistons 37 in the valve C, Fig. 3, are raised.
The lower valve opens the exhaust port 35, to the lower end of the steam cylinder 1,
and the upper valve opens port 36 and allows the steam to pass from the steam
port 38, into the steam pipe c, admitting the steam into the top of the steam
cylinder 1.
This forces the piston rod 5 down, and forces the fluid from the bottom
of the fluid cylinders 2, through the connecting pipe 4, and the throttle valve 3,
into the top of the fluid cylinders 2, whereby affording the means of regulating the
speed at which the piston rod 5 travels.

page_text: Inasmuch as the piston rod 5, is attached to the yoked frame 31, it will be seen
in Fig. 5, that when the piston rod 5 is pushed down, that the end of the rake
arm 41 to which the pulling claws 50 are attached will be raised, swinging on the
shaft Y. When the lever 8, Fig. 9, is pulled to the right (or toward the operator)
however, the pistons 37, Fig. 3, will be pulled down, and the steam from the upper
end of the cylinder is free to pass through the steam pipe c, into the exhaust
opening 35, while at the same time, steam will be admitted through the lower
steam port, and the steam pipe d, into the lower end of the steam cylinder 1,
raising the piston 29, and the piston rod 5, and forcing the fluid from the top of
the cylinders 2, into the bottom, and lowering the pulling claws 50, Fig. 5. This
arrangement affords a means of raising the pulling claws of the rake arm above the
coke, when the rake arm is passing into the oven, and forcing it down on the coke
when the rake arm is passing out of the oven.
When it is desired to swing the rake arm to right or left the foot treadle t is
moved to the left in Fig. 9 the yoked arm 59 is moved to the right in Fig. 2,
forcing the friction clutch 67 into the chain wheel 18, and causing the same to
revolve with the shaft 57. This motion of the treadle compresses the spring 58,
and as soon as the treadle is released the spring forces it back into its natural
position, releasing the clutch and stopping the lateral movement of the rake
arm.
While the treadle is pushed to the right, however, and while the shaft 57 is
revolving, the chain wheels 18 revolves the chain wheel 28 by means of the chain 72,
and turns the shaft 27 and the worm 26, the worm wheel 22 and the gear 23 by
means of the shaft 24, and swings the table T to the right or to the left by means
of the rack 25. It will be seen that this table rides on the wheels 20, travelling
on the rail 19, see Fig. 2.
Said table is pivoted at the opposite end by the shaft 11, and supported on
the conical rollers 10, which bear on the turntable faces 64 and 65, and allow
it to swivel freely.
Inasmuch as all the guides and bearings for the rake arm 41, are attached to
this oscillating table T it will be observed that the rake arm can move in a
horizontal plane, and by regulating the time which the foot treadle is pressed, the
pulling claw 50 can be swung from side to side in any part of the oven.
This gives
the operator complete control of the rake by means of the reversing lever 77 which
controls the means of moving the rake back and forth, and the lever 8 which
controls the raising and lowering mechanism, and the foot treadle t which controls
the mechanism for moving the rake horizontally, and allows him to operate the rake
very rapidly and easily.
In Fig. 10 is shown a modification in the mechanism for propelling the rake
backward and forward. It will be noticed that as heretofore described the chain
wheels 18 and 28, and mechanism for oscillating table T could only be operated
while the gear U, and consequently the rake was in motion.
The modification in Fig. 10 provides for the operation of chain wheels 18 and 28
while the gear U remains idle, and is a representation of that part of shaft 57,
Fig. 1, which lies to the right of chain wheel 18. F represents the frame in which
the shaft is mounted, 57 the shaft; U the gear wheel; a is a boxing secured to
frame F, in which revolves a hollow sleeve m through which passes the shaft 57.
The wheel U is secured to one end of sleeve m and to the other is fastened the
female portion of a friction clutch n. o is the male portion of the friction clutch
which is secured and operated in the same manner as clutch 67. By means of
this device the U
gear may be thrown into and out of engagement with the shaft 57,
and the table T swung independently from the backward and forward movement
of the rake.
The object of my invention is to provide a rake operated by steam power,
and so arranged that the rake may have a motion in a vertical and horizontal

page_text: plane, and move in any position, without producing any strain on the different
parts of the machine which will tend to interfere with their moving freely.
In respect to the motion of the rake in and out of the oven, it will be seen that
the planetary system of gears, including bevel pinion U, bevel gear V, bevel
pinion W, and bevel gear X, allows the gear Z on the shaft Y to always occupy a
position at right angles to the rack 42 on the rake arm 41, and by this means there
is no position in a horizontal plane limited by the motion of the table T, in which
the rake arm 41 cannot be driven in and out of the oven.
I have shown the mechanism here described as adapted to be moved by the
operator seated on seat 9, who manipulates the levers to get the various desired
movements; as the rake has to be inserted into the oven at varying distances in the
operation of pulling the coke, and as the rake is driven by steam and controlled by
admitting and cutting off the steam, I avoid the use of windlass and ropes for
reciprocating the rake arm.
I believe I am the first to provide a machine which will control the operation of
the rake and the pulling device by manipulation of the levers for controlling the
different rake movements vertically and horizontally, as well as controlling the
length of the stroke.
The fluid cylinders 2, are merely to regulate the speed at which the piston
rod 5 travels, either up or down, and this speed can be controlled by the
opening in the throttle valve 3, allowing a greater or less quantity of fluid to pass
through it.
shown
The steam pipes c and d are made flexible so that the steam may always pass into
the steam cylinder 1, in whatever position the oscillating table T may occupy.
I do not confine myself to the specific construction or arrangement of
parts
by these drawings. The piston steam valve C, the three cylinder engines E, the
desired arrangement of parts to make the machine a self propelling one, and the
arrangement of parts to move the table T back and forth in a horizontal
plane, can be variously modified without interfering with the utility and
successful working of the machine, and still present the principal features of my
invention.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed as communicated to me by my
foreign correspondent I declare that what I claim is :-
1-In a coke pulling device, the combination with an engine and boiler, of the
swiveled table T with power driven mechanism for operating the rake mounted upon
said swiveled table, substantially as described.
2-In a coke pulling device in combination with the engine, the swiveling table T,
supporting the rake arm 41, and mechanism for rotating the said table driven by
the engine, substantially as herein specified.
3-In a coke pulling device the combination of an engine, swiveling table T, and
planetary gear transmitters for driving a rake arm, reciprocating in one or more
oscillating frames, swiveled upon said table, substantially as described.
4- In a coke pulling device the rake arm 41, journaled in a swiveling frame 46
which is supported upon the horizontally reciprocating table T, substantially as
specified.
5 In a coke drawing machine, the vertically reciprocating frame 31, supporting
rake arm 41 and journaled on ways supported on the swiveling table T, said frame 31
being connected to the piston rod 5 which travels in cylinder 1, with flexible
steam pipe connections c, s, connecting the cylinder to the boiler, substantially
as herein specified.
6-In a coke puller, the combination of the swiveling table T, supported upon a
platform, the frame 15 fixed to said table T, one or more cylinders and pistons
mounted upon said frame 15, the vertically moving frame 31 supporting the rake
guides, and the driving mechanism for reciprocating said rake, whereby the same
may be moved in any desired plane, substantially as herein described.

page_text: 7-In combination with a portable engine and boiler, the coke puller consisting
of the swiveling table for supporting the rake, planetary transmitting gear for
swiveling the table and reciprocating the rake, one or more vertical steam pistons
and cylinders 1, connected to the table T, flexible steam pipes connecting
cylinder 1 with the boiler, and the levers 8 and t for operating the mechanism
and moving the rake horizontally, and to rotate the table T, substantially as
specified.
8-In a coke puller the combination of rake and the swiveling table T, the
planetary transmitting gears, the segmental rack and pinion and driving mechanism,
the clutch connections, and the driving shaft 57, whereby the rake is moved
laterally by the driving mechanism of the machine, substantially as herein
specified.
9 In a coke pulling device having the rake arm supported upon the vertically
moving frame 31, and mechanism for reciprocating the same, one or more steam
vertical cylinders and pistons 1, the flexible steam pipes c, d, connected to the piston
chamber C, and the mechanism operated by the lever 8, for reversing the stroke of
the vertical pistons, substantially as herein specified.
10-In a coke puller having a steam engine and boiler, mounted upon the plat-
form and supported upon driving wheels 13, the clutch mechanism of the main
shaft K, and the driving mechanism connecting the clutch I, whereby the platform
may be propelled by steam, and disengaged to propel the coke pulling mechanism,
substantially as specified.
11 In a coke pulling device mounted upon a travelling platform F, the propelling
mechanism consisting of the worm Q, the worm wheel R rigidly connected to
axle 14 and wheels 13 and operated by the driving shaft K, the clutch mechanism I
for throwing the driving mechanism out of gear, whereby the worm Q locks the
wheels and holds the platform rigid for operating the rakes, substantially as
described.
12 In a coke pulling device the swiveling table T supported at one end on the
segmental tramway 19, and at the opposite end upon a pivot shaft 11, and roller
supports, the segmental gear 25, secured to the table and operated by gear driven
by the countershaft 27, journaled upon the main platform, substantially as
specified.
13 In a coke puller the rake shaft 41, journaled between rollers attached to the
frame 43, and swiveled upon shaft 68, and upon the oscillating frame 46, travelling
upon the shaft Y with journal rollers journaled on said frame 46, substantially as
described.
the
14 In a coke pulling device, the rake 41 provided with a rack 42, meshing with
gear Z on shaft Y, with roller journal supports mounted upon a frame swiveling
on said shaft Y and the other end of the said rake arm 41 supported upon rollers
journals mounted upon the vertical moving frame 31, substantially as set forth.
15 In a coke pulling mechanism, the combination of the swiveling table T, the
planetary gear transmitting mechanism for transmitting power from the driving
shaft 57, to the rake arm 41, the clutch mechanism for stopping the motion of the
planetary gear, the mechanism for turning the table on its swiveling support with
clutch device for throwing the same in and out of gear, whereby the table may be
turned to move the rake laterally either when the rake driving mechanism is in or
out of gear, substantially as herein specified.
16 In a coke pulling device in combination with an engine, the hand levers and
foot treadles with their respective connection and driving mechanism whereby the
rake is operated in a horizontal and in a vertical plane, substantially as described.
17 In a coke pulling device the combination of the driving mechanism, engaging
a rack rigidly connected to the rake arm 41, mounted and supported in vertically
moving guides, substantially as herein specified.
18 In a coke pulling device the rake arm supported upon oscillating and verti-
cally moving guides and the mechanism for reciprocating in different horizontal and
vertical planes substantially as specified.

page_text: 19 In a coke pulling device the rake arm supported in oscillating guides whose
axes is coincident with the driving gear engaged with the rake arm, substantially as
described.
Dated this 22nd day of September 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.