Improvements in or relating to Stone Breaking and Ore Crushing Machines.
Year: 1897

page_text: Date of Application, 2nd Mar., 1897-Accepted, 3rd Apr., 1897
COMPLETE SPECIFICATION.
Improvements in or relating to Stone Breaking and Ore Crushing
Machines.
I, WILLIAM HENRY BAXTER, of 71 Geldard Road, Leels, 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 :-
This invention relates to improvements in machinery or apparatus employed for
stone breaking and ore crushing.
The objects of the present invention are, first, to provide means for taking up the
wear of the moveable jaw shaft and jaw stock, and second, to reduce the friction on
the low lever shaft.
In the drawings hereunto annexed I have shown my improvements applied to one
of my well-known "Knapping-motion Stone Breakers," but I would have it under-
stood that the improvements may be applied to and combined with other makes or
types of stone breaking and ore crushing machines.
Fig. 1 is a longitudinal part section and Fig. 2 an end elevation of a stone breaking
machine with my invention applied.
Fig. 3 is a part elevation of lower lever and its shaft showing the means for
reducing the friction thereon.
A is the framework of the machine; B the fixed jaw; C the moveable jaw
face; D the moveable jaw stock mounted on the shaft E as hereafter described;
F the toggles; G the lower lever mounted, as hereafter described, on shaft H;
I, adjusting motion for toggles; J, adjustable drawback arrangement applied to the
moveable jaw stock; K the connecting rod; L the crank shaft, upon which the
fly wheel M and driving pulley N are mounted.
All the above described parts,-with the exception of the means for hanging the
moveable jaw stock on its shaft and reducing the friction on the low lever shaft,
may be of the usual and ordinary construction.
Instead of casting the moveable jaw stock D solid and mounting it upon the
shaft E as hitherto, I cast a hole or recess 1 therein, into which is inserted a metal
or other bush 2 which is kept up to the shaft E by the cottar 3 which may be readily
adjusted and locked in position by the nuts 4.
In some cases the bush 2 may be dispensed with and the moveable jaw stock D
may then be fixed in position on the shaft E by the cottar 3 and lock nuts 4.
By this means I am enabled readily to take up any wear on the moveable jaw
stock, and to prevent undue strain and concussion on the shaft E.
For reducing the friction on the low lever shaft H which has hitherto been
mounted in sliding bearings which work in the recess a of the framework A,
I provide on each end of the shaft H a runner or sleeve 5 provided at the inner end
with a flange 6. The runner or sleeve 5 and its flange may be made of metal in one
or more pieces suitably secured together.
In the sleeve 5 is provided an internal recess 7 for lubrication purposes. A
bole 8 closed with a screw 9 is provided for the passage of oil to the internal
recess 7. The top of the recess a may also be lubricated from the internal
recess 7 by means of a hole 10; or other suitable means of lubrication may be
provided.

page_text: By means of the rolling surface of the sleeve 5 the action of the low lever G is
much steadier, and the friction on the shaft H is considerably reduced than when a
sliding block is employed.
Other parts of the machine not herein described, and the action of the jaws and
other moving parts, may be the same as in my well known "Knapping-motion Stone
Breaking Machine."
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. In a stone breaking and ore crushing machine the combination with the
moveable jaw stock D and shaft E of the hole or recess 1 provided in the said jaw
stock, the adjustable cottar 3, lock nuts 4 with or without the addition of the
bush 2 for taking up the wear of the said stock, substantially as herein set forth
and illustrated.
2. In a stone breaking and ore crushing machine the combination with the
low-lever G and the shaft H upon which it is mounted of the flanged sleeves 5
provided with internal recesses 7 and mounted upon the ends of the said shaft
as and for the purposes herein set forth and as illustrated in the annexed
drawings.
3. The arrangement and combination of parts forming the machine as a whole,
substantially as hereinbefore described and as illustrated in the accompanying
drawings hereunto annexed.
Dated this First day of March 1897.
WILLIAM HENRY BAXTER.