Improvements in or relating to Crushers for Stone, Ore, and the like.
Year: 1896

page_text: Date of Application, 23rd June, 1896
Complete Specification Left, 23rd Mar., 1897-Accepted, 8th May, 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Crushers for Stone, Ore, and
the like.
We, WILLIAM JOHNSON and HARRY WALKER, of the Castleton Foundry,
Armley, Leeds, in the County of York, Engineers, do hereby declare the nature
of this invention to be as follows:-
Our invention refers to that class of machines such as are used for breaking,
crushing, cubing, or granulating lumpy substances, and it is applicable to the Blake
and other type of stone breaking machines.
According to our invention we construct a frame either solid or in sections in
which are fitted crushing jaws. The swing jaw or jaws having projecting arms or
levers, the ends of which arms or levers being formed after the manner of slides,
in which are fitted sliding bearings.
The
In these bearings is fixed a friction ball or roller with a spindle.
bearings are arranged so as to be capable of being moved to and fro in the
slides along with the ball or roller by any convenient means such as wedges, screws
or their equivalents.
In order to give movement to the swing or crushing jaw, a shaft is provided with
a portion of its length, that which is nearest to the centre, of a larger diameter
than the outside ends. Upon this enlarged part of the shaft is fitted an eccentric
(capable of being renewed as it wears away) made of any suitable material, the
wearing surface or bush of which can be replaced along with the ball or roller
when worn out.
The said shaft is mounted in suitable bearings and fly wheels and driving pulleys
are provided thereon. The revolving of the shaft causes the ball or roller also
to revolve in its bearings when friction is applied by the eccentric portion coming
in contact with the roller or ball, at the same time giving the necessary movement
to the crushing or swing jaw.
To keep the ball or roller and eccentric portion of shaft in contact, the swing or
crushing jaw may be made to do this by its own weight or by the use of springs,
rods or their equivalents.
der of June 1896
WILLIAM JOHNSON.
HARRY WALKER.
Improvements in or relating to Crushers for Stone, Ore, and
the like.
We, WILLIAM JOHNSON and HARRY WALKER, of the Castleton Foundry,
Armley, Leeds, in the County of York, Engineers, 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 :-
Our invention refers to that class of machines such as are used for breaking,

page_text: crushing, cubing, or granulating lumpy substances, and it is applicable to the
Blake and other type of stone breaking machines.
In the accompanying drawings we have shown our invention applied to a Blake
jaw type of stone breaking machines, but we would have it understood that the
improvements may be applied to and combined with other makes or types of stone
breaking and ore crushing machines.
In the drawings hereunto annexed Fig. 1. is a sectional elevation and Fig. 2. a
plan of a crusher constructed according to our invention.
Like parts in both the views are marked with similar letters of reference.
A is the body or framework of the machine fitted with a fixed crushing jaw B,
and a swing crushing jaw C. The jaw C, is secured to a casting D, which swings
or is pivoted on a trunnion E, which is carried in bearings F, shown in the
drawings hereunto annexed, at the top of the machine. But, we would have it
understood that in some cases it may be found advisable to arrange the bearing F
below the crushing jaw C, and casting D. Also when desired the crushing jaw C,
may be divided into two or more pieces, so as to form two or more jaws which are
mounted upon a shaft, which in this arrangement takes the place of the trunnions E,
and the said shaft is mounted in the bearings F. The casting D is provided with
slide arms or levers G, fitted with journals or bearings H for carrying the spindle I,
on which a friction ball or roller (a friction roller J is shown in the drawings)
works. On the back of the casting D is fixed a wedge K, having a screw L,
provided with nuts M and carrier N. Between the back of wedge K and
journals or bearings H of the friction roller J is fixed a cross bar or bridge
piece O.
In order to give movement to the swing crushing jaw, a shaft Q is provided
with a portion of its length, that which is nearest to the centre of a larger diameter
than the outside ends. Upon this enlarged part of the shaft and in a line with
friction roller J is keyed a cam or eccentric P, (capable of being renewed
as it wears away) made of any suitable material, the wearing surface or bush
of which can be replaced along with the friction roller J when worn out.
The said shaft Q is mounted in suitable bearings R, and fly wheels S, and
driving pulley T are provided thereon. The revolving of shaft causes the
friction roller J also to revolve in its bearings H, when friction is applied by the
cam or eccentric P coming in contact with the friction roller, at the same time
giving the necessary movement to the swing crushing jaw C. To keep the
friction roller J and can or eccentric P in contact during each full and successive
revolution. the casting D is so made that it will do this by its own weight, and a
spring rod U is also provided and fitted at one end with a suitable spring (or
springs) and nuts V and connected to the bottom of the casting D, for preventing
the cam or eccentric P from knocking or hammering against the friction roller J
when the machine is running empty, the spring giving the necessary and increased
backward movement to do this.
The material to be crushed or broken is placed between the fixed crushing
jaw B, and swing crushing jaw C. The shaft Q and cam or eccentric P in the
meantime are caused to revolve at the required speed. The cam or eccentric P
being in contact with friction roller J causes this roller to revolve on its spindle or
axis I in bearings H the result being that as the full side of the cam or eccentric P
runs towards the friction roller J a forward movement is given to the casting D
thereby causing the material between the fixed jaw B, and swing crushing jaw C
to receive a crushing, granulating or knapping action.
As the full side of the cam or eccentric P leaves or recedes from the friction
roller J the casting D swings back to its centre of gravity and the swing crushing
jaw C recedes with it, thus allowing the crushed material to pass out from between
the jaws B and C. The casting D is so made that it will by its own weight keep
the friction roller J in constant contact with the cam or eccentric P during each
full and successive revolution, but to provide against the eccentric knocking or
hammering the friction roller J when the machine is running empty a spring rod U

page_text: provided with nuts and spring V is attached to the bottom of casting D to give the
necessary and increased backward movement.
To enable the material under treatment to be crushed to any desired size or cube
wedge K is fixed on the back of casting D this wedge being in contact with the
cross bar or bridge piece O. which is in contact and fits against the friction roller
bearings H. By raising or lowering the wedge by means of the screw L and
nuts M a larger or smaller opening is made at the bottom of the crushing
jaws B and C. This movement also causes the ends of slide arms or levers G to
approach or recede from the driving shaft Q thereby altering the position of the
bearings H in their relation to the slides..
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. In a machine for crushing stone, ore, and the like fitted with a fixed crushing
jaw B the combination with the swing crushing jaw C of the slide arms or levers Ġ
fitted with a friction ball or roller J mounted on spindle I which is carried in
journals or bearings H substantially as herein set forth and illustrated in the
accompanying drawings.
2. In a machine for crushing stone, ore, and the like, the combination with the
herein described parts of a wedge K, screw L and nuts.M, fitted to the back of
the casting D, (said wedge being in contact with a bridge piece O which is also in
contact with the friction roller J,) or adjusting screws or other suitable devices for
actuating and altering the position of the bearings H in the slide arms or levers G
substantially as herein set forth and illustrated.
3. In a machine for crushing stone, ore, and the like, the combination of the
renewable cam or eccentric P fitted and secured to driving shaft Q by keys or any
other suitable means, with the herein described parts of the machine substantially
as herein set forth and illustrated.
4. In a machine for crushing stone, ore, and the like, the combination of the
herein described parts with stone, ore, and like crushers having one or any number
of moving jaws either swinging or pivoting from the top or bottom of the casting,
substantially as herein before described and illustrated.
5. The combination and arrangement of parts constituting the machine or
crusher for crushing stone, ores, and the like as herein before described and
illustrated in Figs. 1, and 2 of the accompanying drawings.
Dated this Twentieth day of March 1897.
WILLIAM JOHNSON.
HARRY WALKER.