Improvements in Machinery for Sawing and Splitting Wood, for Arranging the Sticks, and for Forming the same into Bundles.
Year: 1892

page_text: Date of Application, 2nd Aug., 1892
Complete Specification Left. 2nd June, 1893-Accepted, 2nd Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Sawing and Splitting Wood, for
Arranging the Sticks, and for Forming the same into Bundles.
1 ARTHUR WILLIAM GLOVER of Holbeck Lane Leeds in the County of York
Engineer do hereby declare the nature of this invention to be as follows:-
My invention relates to various improvements, 1stly in machinery for sawing
wood into suitable lengths for the splitting machine, 2ndly to expansion apparatus
to allow for extra space occupied by the knives of the splitting machine after
entering the wood and so as to imitate the operation of hand splitting whereby the
knives can follow the grain of the wood, 3rdly to machinery for arranging the split
chips and delivering them to the bundling machine or to hand bundlers, and lastly
to improvements in the bundling machine described in the Specification of Letters
Patent No. 11160 of 1887 viz. to mechanism for automatically locking the agitator
in an exact line with the cylinders before and behind the agitator and for operating
and timing the working of the agitator; and to new means for forming the sticks
into a bundle and holding the same until tied.
1st. My improved sawing apparatus consists of a sawing machine in which
several saws are arranged at equal distances apart on a common shaft, or the
saws are arranged on separate shafts successively at equal distances in advance
and at equal distances sideways of one another. The timber is fed forwards
sideways to the saws by means of partition chains, the chains lying midway
between the lines or direction of the saw cuts. Or in place of this, the feed
mechanism may consist of a skeleton feed cylinder, carrying the timber in suitable
intermediate supports up to and past the saws. Whilst passing under the saws
the timber in both cases is arranged to be held down by weighted levers or flat
springs.
2nd. The sawn blocks of wood are split by two knives placed at right angles
to one another, as shewn in Figs. 5 and 13 of Specification No. 11,160 of 1887, the
first blade cutting the wood into slabs, and the second blade cutting the slabs into
sticks. As the first blade enters the wood the slabs are pushed outwards by the
thickness of the blade, and in order to allow for this, and that the knives may to
some extent follow the grain of the wood, and for the slabs to be afterwards pushed
back in close contact with each other before being cut by the second blade,
I provide a hinged plate, which presses against the front sides of the slabs, but
which can receed as the blades enter the wood. The motion of the plate is
preferably brought about by means of links, levers, and cams.
Another method of allowing for this expansion consists in mounting the feeding
rollers a
a Figs. 1 and 2 Specification No. 11,160 of 1887 capable of slight
movement to and fro in the feed direction; the feed rollers being kept pressed
towards the blades by powerful springs, which yield however as the blades enter
the wood. Or in place of the feed mechanisin shewn in the figs. just referred to,
I may actuate these rollers by a silent feed with a supplementary friction brake,
which allows the feed rollers to slightly reverse as the wood is pushed back by the
entrance of the knife blades.
Or the slides in which the knife carrier reciprocates may be made moveable
instead of fixed.
3rd. An apparatus for "picking up," i.e. arranging chips preparatory to bundling,
constructed in accordance with my invention comprises:
A hopper into which the chips are promiscuously delivered from the splitting
machine, an elevator for raising the chips successively in small quantities and
delivering them into a trough, the bottom of which is formed by a rapidly

page_text: travelling belt, hereinafter referred to as the speed belt; a glass or other almost
frictionless slide at the end of the latter, and a short and a long belt placed at right
angles to the speed belt, and hereinafter referred to as the partition and the
delivery belt respectively, with a clapper in one side of the trough on the bottom
of which travels the delivery belt.
The elevator is conveniently formed of an inclined endless band, across which
short pieces of angle or bent iron or flat steps are attached, so that each step may
raise and carry two or three chips with it from the hopper. The chips fall off the
elevator belt as it passes round the top pulley and drop into an inclined shoot,
and thence on to the speed belt, which is enclosed between two side pices. The
width between these is but slightly greater than the width of the narrow speed
belt, and is such, that apart from the longitudinal position of the chips on the speed
belt, caused by the high velocity of the speed belt, the chips cannot fall or lie cross
way on the speed belt. Opposite and close to the delivery end of the speed belt
and fitted between two sides of the trough is a glass slide, which is very slightly
inclined upwards. The velocity of the speed belt is such, that the chips shoot over
the glass slide (which gives them a slightly upward course), across an intervening
space, somewhat greater than the length of the chips, on to the slowly travelling
delivery belt.
Above the delivery belt is situated the shorter partition belt,
a space of four inches or thereabouts separating the top side of the (endless)
delivery belt from the underside of the (endless) partition belt. To the partition
belt are attached division or partition plates of sheet iron, which stand out at right
angles to the belt, and which are of such a length that when passing along the
under side, they just reach to the top of the delivery belt, and thus form with the
two belts a series of rectangular partitions, which pass with an intermittent motion
past the end of the speed belt. The lower side of the partition belt and the upper
side of the delivery belt travel in the same direction at the same speed, the axles of
the pulleys at this end of the belts being geared together, and the intermittent
motion is obtained by driving one of them with a ratchet mechanism. The
surfaces of the partition belt pulleys or drums are provided with recesses or
longitudinal grooves in which fit the heads of the bolts, securing the partition
plates to the belt so that the belt is driven without any slip.
The chips as they are shot from the end of the speed belt enter these rectangular
compartments and drop on to the travelling belt. Those of the chips however,
which (either from catching the edges of the partition plates or the ends of chips
in front of them) rebound too far, drop down the previously mentioned intervening
space on to an overflow travelling belt or belts, and are thus carried back to the
hopper. Some of the chips however will still project too far, and in order to adjust
the ends all level I provide a clapper, which is conveniently formed of a spring
plate attached at one end to the side of the delivery belt trough, and is clapped to
an fro against the side of the travelling partitions, so as to force back the ends of
the projecting chips. To the free end of the clapper is attached one end of a wide
strip of leather, the opposite end being attached to the side of the delivery trough.
The back end of the partitions opposite the speed belt are closed by a travelling
belt, which whilst deadening or lessening the rebound, gives the chip ends a
downward tendency.
Motion may be imparted to the clapper by means of a crank or eccentric.
This mechanism arranges the chips on the delivery belt all parallel to one
another and with the ends all level ready for delivery to the bundling machine.
4th. In order to lock the agitator d Figs. 26 and 28 Specification No. 11160
of 1887 in position at the proper time, I provide a horizontal shaft, which is
rotated through 90 degrees at the proper time by means of a cam and lever; and
on the end of this shaft fit a cross shaped cam, which fits within a rectangular
opening in the agitator carrier in such a manner, that in one position the agitator
is locked, and when in a position at right angles to the first position sufficient
space is left to allow of the reciprocating movement of the agitator.
I also provide the following mechanism for setting the agitator in and out of

page_text: gear at the proper times. The agitator is moved by means of a block attached
to the end of a constantly moving eccentric rod, and engages with a slot in the
underside of the agitator carrier. A double armed hinged lever is connected at
one end by means of a link with the end of the eccentric rod and at the opposite
end by means of a link with a lever mounted on the above just mentioned
horizontal shaft. When the shaft is partially rotated, so that the lever on it is
depressed, the opposite arm of the double armed lever lifts the eccentric rod so
as to cause the block thereon to engage with the slot in the under side of the
agitator carrier, which is thereby set in motion; whilst when the motion of the
shaft is reversed, the block is withdrawn out of gear and the agitator stops, being
immediately afterwards locked as aforesaid.
The new means for forming the bundles consists of ropes or bands made to
encircle the bundle as the latter is fed within the loop formed by the ropes or
bands. They are held in circular position by means of circular carriers, which
allow one fourth of the circumference of the ropes or bands to protrude, so as to
grip the sticks. One end of the ropes or bands is attached to or actuated by a
cam movement, which agitates the chips, and the opposite end to springs or
weights, which hold the ropes or bands tant or tight, and as the cam movement
plays out its end of the ropes or bands, the bundle is partly rotated in the
cylinders.
Dated this 30th day of July 1892
J. CLARK JEFFERSON,
2, East Parade, Leeds, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Machinery for Sawing and Splitting Wood, for
Arranging the Sticks, and for Forming the same into Bundles.
I ARTHUR WILLIAM GLOVER of Holbeck Lane Leeds in the County of York
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:-
My invention relates to improvements 1st in machinery for sawing wood into
suitable lengths for the splitting machine, 2nd to expansion apparatus to allow for
extra space occupied by the knives of the splitting machine after entering the
wood and so as to imitate the operation of hand splitting whereby the knives can
follow the grain of the wood 3rd to machinery for arranging the split chips and
delivering them to the bundling machine or to hand bundlers and lastly to
improvements in the bundling machine described in the Specification of Letters
Patent No. 11160 of 1887 eiz.:-to mechanism for automatically locking the
agitator in an exact line with the cylinders before and behind the agitatur, and
for operating and timing the working of the agitator, and to new means for forming
the sticks into a bundle and holding the same until tied.
1st. My improved sawing apparatus consists of a sawing machine in which
several saws are arranged at equal distances apart on a common shaft, or the
saws are arranged on separate shafts successively at equal distances in advance
and at equal distances sideways of one another. The timber is fed forward side-
ways to the saws by means of partition chains, the chains lying midway between
the lines or direction of the saw cuts. Or in place of this the feed mechanism
may consist of a skeleton feed cylinder, carrying the timber in suitable intermediate
supports up to and past the saws. Whilst passing under the saws, the timber in
both cases is arranged to be held down by weighted levers or flat springs.
2nd. The sawn blocks of wood are split by two knives placed at right angles
to one another as shewn in Figs. 5 and 13 of Specification No. 11,160 of 1887,
the first blade cutting the wood into slabs, and the second blade cutting the slabs
into sticks. As the first blade enters the wood the slabs are pushed outwards by

page_text: the thickness of the blade, and in order to allow of this and that the knives may
to some extent follow the grain of the wood and the slabs afterwards pushed back
in close contact with each other before being cut by the second blade, provide
a hinged plate which presses against the front sides of the slabs, but which can
receed as the blades enter the wood. The motion of the plate is preferably
brought about by means of links levers and cams.
Another method of allowing for this expansion consists in mounting the feeding
rollers a, a, Figs. 1 and 2 of Specification No. 11,160 of 1887, capable of slight
movement to and fro in the feed direction, the feed rollers being kept pressed
towards the blades by powerful springs, which yield however as the blades enter
the wood.
Or in place of the feed mechanism shewn in the figures just referred to, I may
actuate these rollers by a silent feed with a supplementary friction brake, which
allows the feed rollers to slightly reverse as the wood is pushed back by the
entrance of the knife blades.
;
3rd. An apparatus for "picking up," i.e. arranging chips preparatory to
bundling, constructed in accordance with my invention comprises. A hopper
into which the chips are promiscuously delivered from the splitting machine, an
elevator for raising the chips successively in small quantities and delivering them
into a trough, the bottom of which is formed by a rapidly travelling belt, herein-
after referred to as the speed belt; a glass or other almost frictionless slide at the
end of the latter; and a short and a long belt placed at right angles to the speed
belt, and hereinafter referred to as the partition and the delivery belt, with a
clapper in one side of the trough on the bottom of which travels the delivery belt.
The elevator is conveniently formed of an inclined endless band, across which
short pieces of angle or bent iron or flat steps are attached, so that each step may
raise and carry two or three chips with it to the hopper. The chips fall off the
elevator belt as it passes round the top pulley and drop into an inclined shoot and
thence on to the speed belt, which is enclosed between two side pieces the width
between these is but slightly greater than the width of the narrow speed belt, and
is such that apart from the longitudinal position of the chip on the speed belt,
caused by the high velocity of the speed belt, the chips cannot fall or lie crossway
on the speed belt. Opposite and close to the delivery end of the speed belt and
fitted between two sides of the trough is a glass slide, which is very slightly
inclined upwards. The velocity of the speed belt is such, that the chips shoot
over the glass slide, (which gives them a slightly upward course), across an inter-
vening space somewhat greater than the length of the chips on the slowly
travelling delivery belt. Above the delivery belt is situated the shorter partition
belt, a space of about 4 inches or thereabouts separating the top side of the
(endless) delivery belt from the underside of the (endless) partition belt. To the
partition belt are attached division or partition. plates of sheet iron, which stand
out at right angles to the belt, and which are of such a length that when passing
along the underside they just reach to the top of the delivery belt, and thus form
with the two belts a series of rectangular partitions which pass with an inter-
mittent motion past the end of the speed belt. The lower side of the partition
belt and the upper side of the delivery helt travel in the same direction at the
same speed, the axles of the pulleys at this end of the belts being geared together,
and the intermittent motion is obtained by driving one of them with a ratchet
mechanism.
The surfaces of the partition belt pulleys or drums are provided with recesses or
longitudinal grooves in which fit the heads of the bolts, securing the partition
plates to the belt, so that the belt is driven without any slip.
The chips as they are shot from the end of the speed belt enter these rectangular
compartiments and drop on to the travelling belt. Those of the chips however,
which (either from catching the edges of the partition plates or the ends of chips
in front of them) rebound too far, drop down the previously mentioned intervening
space on to an overflow travelling belt or belts, and are thus carried back to the

page_text: hopper. Some of the chips however will still project too far, and in order to
adjust the ends all level, I provide a clapper which is conveniently formed of a
spring plate attached at one end to the side of the delivery belt trough, and is
clapped to and fro against the side of the travelling partitions, so as to force back
the ends of the projecting chips. To the free end of the clapper is attached one
end of a wide strip of leather, the opposite end being attached to the side of the
delivery trough. The back end of the partitions opposite the speed belt are closed
by a travelling belt, which whilst deadening or lessening the rebound gives the
chips a downward tendency. Motion may be imparted to the clapper by means of
a crank or eccentric.
This mechanism arranges the chips on the delivery belt parallel to one another,
and with the ends all level ready for delivery to the bundling machine.
4th. In order to lock the agitator d, Figs. 26 and 28 of Specification No. 11,160
of 1887, in position at the proper time, I provide a horizontal shaft which is rotated
through 90 degrees at the proper time by means of a cam and lever, and on the
end of this shaft 1 fit a cross shaped or oval cam which fits within a rectangular
opening within the agitator carrier, in such a manner, that in one position the
agitator is locked, and when in a position at right angles to the first position
sufficient space is left to allow of the reciprocating movement of the agitator.
5th. I also provide the following mechanism for setting the agitator in and out
of gear at the proper times. The agitator is moved by means of a block attached
to the end of a constantly moving eccentric rod, and engages with a slot in the
underside of the agitator carrier. A double armed hinged lever is connected at
one end by means of a link with the end of the eccentric rod, and at the opposite
end by means of a link with a lever mounted on the above just mentioned horizontal
shaft. When the shaft is partially rotated, so that the lever on it is depressed, the
opposite arm of the double armed lever lifts the eccentric rod so as to cause the
block thereon to engage with the block slot in the underside of the agitator carrier,
which is thereby set in motion; whilst when the motion of the shaft is reversed the
block is withdrawn out of gear, and the agitator stops being immediately afterwards
locked as aforesaid.
6th. The new means for forming the bundles consists of ropes or bands or the
like, hereinafter referred to as ropes, made to encircle the bundle as the latter is
fed within the loop formed by the ropes or bands. They are held in circular
position by means of hinged oscillating circular carriers, which allows one fourth
of the circumference of the ropes or bands to protrude so as to grip the sticks.
One end of the ropes or bands is attached to or actuated by a cam movement which
agitates the chips, and the opposite end to springs or weights; which hold the
ropes or bands taut or tight, and as the cam movement pays out its end of the
band, the bundle is partly rotated in the cylinders. The slackening or opening
out of the ropes is effected by the motion of the carriers to and fro.
And in order that my invention and the manner in which the same is to be
performed may be more readily and clearly understood reference is given to the
accompanying drawings and to the letters and marks thereon.
Figs. 1 and 2 are respectively side or end and front elevations of a sawing
machine constructed in accordance with my invention in which several saws a, a, are
arranged at equal distances apart on a common shaft, and in which the timber is
fed forward sideways by means of a skeleton feed cylinder c; the timber being
wedged between the supports d d. These supports are discontinuous; being
divided by grooves f,, (which preferably also run slightly into the body of the
cylinder), in lines corresponding with the position of the saws a, a, to enable the
saws to cut through the wood.
Figs. 3 and 4 are respectively side or end and front elevations illustrating the
second arrangement of sawing machine in which several saws a, a, are arranged
on separate shafts b, b, successively at equal distances in advance, (Fig. 3), and
at equal distances sideways, (Fig. 4), of one another. In these Figs. 3 and 4 the
method of feeding forward the timbers sideways by means of partition chains y, yr

page_text: passing in lines between the saws is illustrated. h, h, are guide pulleys placed
at the opposite ends of the saw bench, and i, i, are the driving chain wheels. j,j, is
the first or main driving shaft; k, the saw driving pulleys on the same, and l
and m.friction gear wheels for driving the chain wheel shaft n. This shaft is
fitted in bearings in the two side levers or rods o, which are hinged at p, and
partly balanced by means of the weight q. is a foot board at the opposite
ends of the rods o, so that the attendant by pressing on the same can increase
the driving power when necessary. 3, Figs. 1 and 3, are springs or weighted levers
for holding down the timber as it passes under the saw. The feed arrangement
illustrated in Figs. 3 and 4 may be adapted to the saw cutting arrangement
illustrated in Figs. 1 and 2; whilst the feed arrangement shewn in Figs. 1 and 2
may be adapted to the saw cutting arrangement illustrated in Figs. 3 and 4;
the axles of the saws b, b, being then arranged in a curve having the cylinder
axle as centre.
"
Fig. 5 illustrates the above first mentioned "expansion"
apparatus. This
consists of a plate t, (for the sake of illustration shewn also in Fig. 6), the arm
carrying which is hinged at . The axis of this hinge is preferably inclined to
the line of the plate as shewn in plan at Fig. 54. The motion of this plate is
preferably brought about by means of the cam or eccentric v, and connecting links
and levers w; but may be controlled by a spring or weighted lever.
"
Figs. 6 and 7 are respectively front and side elevations of a splitting machine
provided with my second form of " expansion apparatus. In this the feed
rollers a, a, by means of the hinged parallel links x, x, are mounted capable of
slight movement to and fro in the feed direction, moving slightly backwards in the
direction indicated by the arrow under the influence of the blow of the knives the
return movement being effected by the spring y.
A silent feed arrangement as referred to above may consist of a lever, pivotted
loose on the shaft a Figs. 6 and 7 and actuated to and fro by means of the
eccentric or connecting rod c. This connecting rod is attached to one arm of a
short lever hinged at the free end of the first mentioned lever. The opposite arm
of the said short lever engages or bites against a drum on the shaft a (in place of
the toothed wheel shewn in Fig. 7) as the rod c moves in one direction thereby
operating the feed roller shafts a a'. When the rod c moves in the opposite
direction, the biting arm of the short lever rides clear off the drum. A supple-
mentary drum not shewn in the drawings is fixed to the shaft a' and provided with
either a screw, or weighted lever brake so adjusted as to hold the rollers steady
when the feed has been effected, but which allows the feed rollers slightly to reverse
as the wood is pushed back by the entrance of the knife blades.
My improved "picking-up" apparatus is illustrated in Fig. 8 in end elevation,
in Fig. 9 in plan, and in Fig. 10 more in detail and to a larger scale in side
clevation. 1, 1, is the hopper from which the chips are raised by means of the
elevator 2, and delivered down the trough 3, (or troughs) on to the speed
belt (or belts) 3. 4 is the glass slide at the end of the same, over which the
chips shoot into the rectangular partitions 5, 5, formed by the partition plates 6, 6,
and the bottom side of the partition belt 7, 7, and the top side of the delivery
belt 8, 8. 9, 9, is the intervening space down through which the chips not lodging
in the partitions 5, 5, drop back into the hopper 1, 1, or on to the elevator 2, 2.
Where more than one speed belt is used, I prefer to give the glass slides,
successively slighter elevation, and by this means am enabled to fill the rectangular
compartments 5,5, more completely. The ratchet mechanism for imparting an
intermittent feed to the partition and delivery belts is shewn at 10, on the left
hand side of Fig. 10. 11 is the travelling belt, which closes or forms the back side
of the partitions into which for the moment the chips are being shot, in order to
lessen the rebound and to give the chips a downward tendency. The belt 11 is
actuated by the pulley 25 from a belt and counter shaft not shewn. 12, Fig. 9, is
the clapper for straightening the ends of projecting chips, and 13 is the eccentric
for actuating the clapper. When more than one speed belt is used, the bundling

page_text: machine 14 may be placed close to the end of the partition belt, so that each
compartment 5, 5, delivers a sufficient and sufficiently regular quantity to form one
bundle. Fig. 11 illustrates a modified arrangement of the partition and delivery
In the
belt, to which the chips may be delivered with or without a speed helt.
former case the partitions are better filled in case only one speed belt is being used,
as the chips enter when the partitions are descending in vertical order; whilst in
the latter case the chips may be delivered previously arranged parallel at 15 direct
from the elevator trough.
My improved device for locking the agitator in position at the proper times is
illustrated in side elevation by Fig. 12, in end elevation by Fig. 13, and partly in
plan by Fig. 14. 16 is the horizontal shaft provided at the end with the cam 17,
said cam in the position shewn in Fig. 13 allowing the agitator 18 to be operated,
but when in a position at right angles to that shewn just fits with its end touching
the sides of the rectangular slot 19, (formed as a side extension of the agitator),
thereby locking and preventing any movement of the latter.
My improved device for setting the agitator in and out of gear at the proper
times is also illustrated in Figs. 12 to 14. 20 is a block or pin attached to the end
of the constantly moving eccentric rod 21, and when in the position shewn in
Fig. 13 engages at the narrow upper end of the triangular slot or opening in the
agitator 18, and operates the agitator; but which when lowered to the bottom part
of said triangular opening by means of the links 22, double armed lever 23, and
lever 24 on the horizontal shaft 16, can move to and fro in the triangular opening
without imparting any motion to the agitator.
Figs. 15 and 16 are two opposite side elevations and Figs. 17 and 1S are a front
elevation illustrating my apparatus for bundling by means of bands or ropes 25.
Fig. 19 is a cross section of a circular groove carrying a round rope. 26 is a lever
on the shaft 27, which is operated by a cam movement, and to which lever one end
of the rope 25 is attached; the opposite end being kept tight, yet allowed to yield,
(when required) by means of springs or the weight 28. The rope may completely
29 are hinged
or more preferably as shewn only partially encircle the bundle.
slides in which the circular grooves for the ropes are formed, and which are agitated
to and fro by means of links 30, levers 31, and oscillating shafts 32.
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 I
claim is :-
1. My improved sawing apparatus characterized by the sawing and feeding
devices herein set forth and illustrated.
2. The improved sawing apparatus herein set forth and illustrated in Figs. 3
and 4.
3. The improved feed apparatus or sawing devices for sawing machines herein
set forth and illustrated in Figs. 1 to 4.
4. In connection with wood splitting machines the use of "expansion" devices
to allow for extra space occupied by the knives after entering the wood and to give
greater freedom to the knives to follow the grain of the wood substantially as set
forth and described.
86
5. In connection with wood splitting machines, the application and use of
expansion" apparatus of any of the forms herein set forth or illustrated.
6. "Picking-up" apparatus consisting of an elevator, a speed belt or belts, and
partition and delivery belts for the purposes herein set forth.
5.
7. The picking-up" apparatus substantially as herein set forth and illustrated
in Figs. 8, 9 and 10.
8. In "
picking-up" apparatus the combination of speed belt or belts and the
partition and delivery belt arrangement, operating substantially as and for the
purposes herein set forth.
55
9. In picking-up" apparatus the combination of a shoot and a partition and
delivery belt arrangement as and for the purposes herein set forth.

page_text: 10. The agitator locking device consisting of a cam 17 and an opening 19 in the
agitator, operating in the manner herein set forth.
11. The improved device for setting the agitator in or out of gear comprising a
block or pin on the end of a constantly moving eccentric rod and capable of being
thrown into and out of gear with a slot in the agitator carrier by means of links
and levers substantially as herein set forth.
12. The method of forming chip bundles by encircling or partly encircling them
with a rope held by carriers or formers in an approximately circular position, said
ropes and carriers operating substantially as herein set forth.
13. In picking-up" apparatus the construction and use of partition and
delivery belt arrangements with clapper, operating as and for the purposes herein
set forth.
14. The combination of the constantly moving eccentric rod controlled by links
and levers and the rectangular slot and cam device, said link, levers and cam being
operated in common from one shaft.
Dated this let dow of Im 1902
J. CLARK JEFFERSON,
2, East Parade, Leeds, Agent for Applicant.