Improvements in Machinery or Apparatus for Extracting Coke from Coke Ovens or other Purposes of the like kind, such as the Extraction of Lime from Lime Kilns.
Year: 1888

page_text: Date of Application, 22nd Aug.. 1888
Complete Specification Left. 22nd May, 1889-Accepted, 6th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Extracting Coke from
Coke Ovens or other Purposes of the like kind, such as the
Extraction of Lime from Lime Kilns.
I THOMAS SMITH, of Kensington House, Chapeltown, near Sheffield, in the County
of York, Colliery Manager, do hereby declare the nature of this invention to be as
follows:-
This invention relates more especially to the extraction of coke from coke ovens, and
it has for its object improvements in machinery or apparatus used for the purpose of
such extraction, by which improvements the withdrawal of the coke is much facilitated,
and great saving of time and labour is effected.
The improved machinery or apparatus consists substantially of a plate forced through
the door of the oven and under the coke by suitable mechanism, and then withdrawn,
bringing with it the coke which is to be extracted.
It may be applied to coke ovens of different kinds, but supposing that it is to be
applied to the ordinary form of beehive oven having a door or opening in front
through which the coke is to he extracted, I arrange in front of such door or opening
a horizontal bar provided at its outer end with a sufficiently strong frame carrying an
inclined plate, the lower edge of which is adjusted at such a height that if the bar is
forced forward it drives the edge of the inclined plate under the mass of coke raising
the latter from the floor of the oven and breaking it up so that it can be readily
removed and withdrawn through the door of the oven when the bar and plate are
drawn out, the back or higher edge of the inclined plate being provided with a
vertical plate by which the coke is so drawn out.
At a convenient distance from the front of the oven opposite to the door, I arrange
a sufficiently strong winch or crab having a toothed pinion gearing with a corre-
sponding toothed rack formed upon or attached to the bar first described, so that by
means of the winch the bar and inclined plate may be either forced into or withdrawn
from the oven as already described.
The winch may be worked by hand, steam, or other power, suitable devices of the
ordinary wellknown kind being provided by which it can be started and stopped, or
its motion reversed, as desired. The winch described is preferably carried upon
wheels running upon rails in front of the oven, so that it together with the bar and
inclined plate, can be brought into their proper position or removed along the rails, or
brought into position opposite other ovens, as may be desired.
By
Where my invention is applied to beehive ovens as already described, I prefer to
make the rails in front curved in plan, the wheels being arranged to correspond with
them, so that as the winch is made to travel upon them, the bar and detaching or
lifting plate can be introduced through the door into different parts of the oven.
this method of arrangement the bar is first introduced so as to force the lifting plate
under the centre of the mass of coke in the oven, and the winch being then moved
sufficiently round the rails the bar is then again introduced through the door and the
lifting plate forced under the coke at one side of the oven, the process being then
repeated upon the opposite side. At each operation the coke is extracted from the
oven when the bar and plate are withdrawn, very little being left which can be
readily removed with rakes.
I sometimes introduce together with the detaching plate and by the same means,
a rake or equivalent device above the mass of coke in the oven, so that when the bar
is withdrawn in the manner described, it assists in extracting the coke.
The improved machinery or apparatus may be applied to rectangular or other
shaped ovens, the necessary modifications being made in the method of arranging

page_text: and operating it, and it may be used for other purposes where it is desired quickly
and effectually to reinove masses of heavy material from the chambers containing them,
as for instance the removal of lime from limekilns.
By its use great economy of time and labour is effected, whilst it is effectual, durable,
and inexpensive, and not liable to get out of order.
Dated this 22nd day of August 1888
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Extracting Coke from
Coke Ovens or other Purposes of the like kind, such as the
Extraction of Lime from Lime Kilns
I, THOMAS SMITH, of Kensington House, Chapeltown, near Sheffield, in the
County of York, Colliery Manager, 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 and accompanying drawing, that
is to say -
My invention relates more especially to the extraction of coke from coke ovens, and
it has for its object improvements in machinery or apparatus used for the purpose of
such extraction by which improvements the withdrawal of the coke is much facilitated,
and great saving of time and labour is effected.
The improved machinery or apparatus consists substantially of a plate forced
through the door of the oven and under the coke by suitable mechanism, and then
withdrawn, bringing with it the coke which is to be extracted. It may be applied to
coke ovens of different kinds, but supposing that it is to be applied to the ordinary form
of beehive oven having a door or opening in front through which the coke is to be
extracted, I arrange in front of such door or opening a horizontal bar provided at its
outer end with a sufficiently strong frame carrying an inclined plate, the lower edge of
which is adjusted at such a height that if the bar is forced forward it drives the edge
of the inclined plate under the mass of coke raising the latter from the floor of the
oven and breaking it up so that it can be readily removed and withdrawn through the
door of the oven when the bar and plate are drawn out, the back or higher edge of
the inclined plate being provided with a vertical plate by which the coke is so
drawn out.
At a convenient distance from the front of the oven, opposite to the door, I arrange
a sufficiently strong winch or crab or hauling gear having a toothed pinion gearing
with a corresponding toothed rack formed upon or attached to the bar first described,
so that by means of the hauling gear the bar and inclined plate may be either forced
into or withdrawn from the oven as already described.
The gear may be worked by hand, steam, or other power, suitable devices of the
ordinary well known kind being provided by which it can be started and stopped,
or its motion reversed, as desired. The winch or gear described is preferably carried
upon wheels running upon rails in front of the oven, so that it together with the bar
and inclined plate, can be brought into their proper position or removed along the
rails, or brought into position opposite other ovens, as may be desired.
Where my invention is applied to beehive ovens as already described, the rails in
front may be made curved in plan, the wheels being arranged to correspond with
them, so that as the winch is made to travel upon them, the bar and detaching or
lifting plate can be introduced through the door into different parts of the oven. By
this method of arrangement the bar is first introduced so as to force the lifting plate
under the centre of the mass of coke in the oven, and the winch being then moved
sufficiently round the rails the bar is then again introduced through the door and the
lifting plate forced under the coke at one side of the oven, the process being, then
repeated upon the opposite side. At each operation the coke is extracted from the

page_text: oven when the bar and plate are withdrawn, very little being left, which can be
readily removed with rakes.
The bar may have the toothed rack formed at its edge and gearing with a vertical
pinion. It is supported and guided by rollers, and arranged so that it can be turned
horizontally round the pinion, so as to point in any desired direction.
I sometimes introduce together with the detaching plate and by the same means a
rake or equivalent device above the mass of coke in the oven, so that when the bar is
withdrawn in the manner described, it assists in extracting the coke.
The accompanying drawing is in illustration of my invention, figure 1 shewing a
side view of the bar and entire apparatus, driven by a steam engine. Figure 2 is a
plan, and figure 3 an end view partly in section, of the same.
The same letters of reference indicate the same parts in the several figures.
a is a strong horizontal bar having at its outer end a frame carrying the curved
inclined plate b, which is forced under the coke in the oven, as described. с с аге
rollers upon which the outer end of the bar a, and the frame, are supported. The
outer part of the bar a is shewn separate and jointed to the rack at d, so that it can
be turned up when desired. a' is a strong toothed rack formed upon or attached to
the side of the bar, and gearing with a strong toothed pinion e carried upon a vertical
shaft which turns in suitable bearings g g carried by a strong framing h, which is
itself supported upon wheels ii running upon rails as shewn in front of the oven or
ovens. The vertical shaft has fixed upon its upper end a bevilled toothed wheel k
(figure 3) gearing with a pinion upon the horizontal driving shaft of a steam engine m
of any convenient description carried upon the framing supplied with steam from a
boiler not shewn in the drawing, and provided with reversing gear of the usual kind,
by which it can be rapidly started, stopped, and reversed.
The toothed pinion e which drives the rack, can be connected with or disconnected
from the vertical shaft f, by means of a coupling or clutch n, actuated by a handle o
(figure 3).
The bar a and rack a' are supported upon rollers p, p, and the rack is kept up to
the pinion e by rollers behind it, all these rollers p, p, and r, r, being carried upon
a strong frames which is formed upon or bolted to a sleeve which can turn upon
the bearing in which the shaft / revolves, and concentric with that shaft.
The lower end of the sleeve t has fixed to it a horizontal tangent toothed wheel u
which gears with and is driven by a screw upon a shaft carried in bearings upon
the frame and turned by the hand wheel w.
The lower end of the vertical shaft has fixed upon it a bevilled toothed wheel
which gears with and drives a corresponding bevilled wheel upon the horizontal
shaft y carried in bearings below the frame, and the shaft y drives by means of
bevilled toothed wheels at the axle of the wheels upon which the frame is carried,
so that when necessary the entire apparatus can be propelled along the rails in either
direction. The bevilled toothed wheel a¹ can be connected with or disconnected from
the shaft y by means of a clutch 1 actuated by a handle 2.
The bar a is also guided and supported above and below, by rollers p', p', turning
in bearings carried by the frame h, and of sufficient length to allow the position of the
bar a and rack a' to be altered round the central vertical shaft f. Guiding wheels
are shewn at 3, 3, (figure 1) to steady the carriage against the rails.
The action of the apparatus is as follows:-The entire machine being brought to
the proper position in front of the oven door, the engine is set in motion in the
proper direction, and the rack a is driven forward by means of the pinion e which is
put in gear by the handle o. The plate is accordingly driven under the centre of
the mass of coke in the oven, and then withdrawn by reversing the engine and the
coke which has been raised and broken is withdrawn through the door as the bar is
withdrawn. The bar a and rack are then turned sufficiently round the central shaft f
by turning the handwheel w, and the frame and plate bare again forced in under the
coke at one side of the oven, and are then withdrawn. The bar and rack are then
again turned until the coke at the other side of the oven can be raised and drawn out
in the same way.

page_text: The entire apparatus can then by means of the handle 2 be made to travel along the
rails, either to the front of another oven or to any position desired.
It is to be understood that where I have described my improved apparatus as used for
extracting coke from coke ovens, I include other operations of the like kind, such as
the extraction of lime from lime kilns. The improved machinery or apparatus may be
applied to rectangular or other shaped ovens; the necessary modifications being made
in the method of arranging and working it.
By its use great economy of time and labour is effected, whilst it is effective,
durable, and inexpensive, and not liable to get out of order.
I do not confine myself to the precise form, arrangement, and operation of the
several parts of the apparatus as described and shewn, which may be varied more or
less to suit the different circumstances in which it is to be used, but having now
particularly described and ascertained the nature of my said invention, and in
what manner the same is to be performed, I declare that what 1 claim is :-
:-
1. The method of drawing coke from ovens by means of a bar carrying a plate
which is forced under the coke in the oven, so as to raise and sufficiently break the
coke, and is then withdrawn, with or without a rake or other equivalent device above
the coke, bringing with it the coke, substantially as described and shewn in the
drawing.
2. The combination of the bar a, frame and plate b, rack a¹, pinion e, and supporting
and guiding rollers p and r, substantially as described and shewn in the drawing.
3. In combination with the bar a, frame and plate b, rack a¹, pinion e, and supporting
and guiding rollers p and r the rollers pl and the means for turning the bar, rack,
and frame and plate & round the central shaft f substantially as and for the purpose
described and shewn in the drawing.
4. In combination with the bar a, and frame and plate b, the rollers
as and for the purpose described and shewn in the drawing.
substantially
5. In combination with the bar a, frame and plate b, rack a¹ pinion e, rollers p, r,
and p, and means for turning the bar, rack, and frame and plate round the lateral
shaft, the carriage running upon rails and carrying the entire apparatus, and the
means for propelling the carriage in either direction along the rails, substantially as
and for the purpose described and shewn in the drawing.
Dated this 22nd day of May 1889.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Patentee.