Improvements in the Operating Mechanism of Stone Breaking and Ore Crushing Machines, applicable also to Punching, Shearing, and other similarly operated machines.
Year: 1899

page_text: as amended in accordance with the decision of the Comptroller-General,
dated the 30th day of January. 1900
ECIFICATION.
Improvements in the Operating Mechanism of Stone Breaking and
Ore Crushing Machines, applicable also to Punching, Shearing,
and other similarly operated machines.
I, WILLIAM HENRY BAXTER, of 71, Gelderd Road, Leeds, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in stone breaking and ore crushing and
other machines where similar movements are required as for instance in punching
and shearing machines. Its object is to provide means whereby the connecting rod
or pitman of the machine is carried in bearings attached to or forming part of the
moveable jaw, instead of being mounted in bearings in the framework as hitherto.
By this means an increased, say, crushing or breaking pressure is imparted to the
movable jaw without any detrimental loss of movement.
I will describe the invention as applied to a stone breaking and ore crushing
machine.
According to this invention the framework may be constructed in one piece or
built up in parts bolted or otherwise fixed together, and it may be made of any suitable
material, such as, say, cast iron or steel.
Provision is made for the fixed jaw to be of ordinary construction and in its
usual position, and the movable jaw (also of ordinary construction) to be
mounted on and to be pendant from a shaft carried in bearings on the framework.
This shaft may either be a fixture in its bearings or oscillate therein.
Instead of mounting the connecting rod or pitman on a shaft carried in bearings
on the framework of the machine, I arrange the bearings for the shaft to be formed
in arms or brackets forming part of or attached to the moving jaw of the machine.
On the shaft is or are mounted pendantly, or fixed, one or more eccentrics on
which the connecting rod or pitman is mounted.
the usual driving pulley and fly wheel or wheels. The lower end of the connecting
On the said shaft is also mounted
od or pitman is retained in position by toggles interposed in the usual manner
between the movable jaw and the adjustable wedges of the machine. Above or below
be position of the said toggles is arranged and mounted a second set or sets of toggle
evers in the form of suspension levers, or rods, or chains, with or without a spring
uffer or buffers. The ends of these last named levers, rods, or chains, are con-
ected to a very strong eye-bolt or bolts, or it or their equivalents secured to the
ear end of the machine. Whilst the opposite end or ends of the said levers, rods, or
hains, are secured to, or attached to the movable jaw.
These last named toggle levers, rods, or chains, not only aid in suspending the
onnecting rod or pitman, but also retain it in position during the movement of the
centric or eccentrics. At the same time the whole (or nearly so weight
[Price 8d1

page_text: wheel or wheels, driving pulley, and connecting rod or pitman is added to the
movable jaw for increasing the crushing or breaking pressure.
In place of the toggle levers, rods, or chains, the whole of the working parts may
be held in position by a rod and strong spring attached respectively to the movable
jaw and to the outer or other portion of the framework.
Other parts of the machine not particularly described may be of the usual and
ordinary construction.
Dated this Twentieth day of May 1899.
WILLIAM HENRY BAXTER,
By W. Fairburn-Hart, Agent.
Improvements in the Operating Mechanism of Stone Breaking and
Ore Crushing Machines, applicable also to Punching, Shearing,
and other similarly operated machines.
I, WILLIAM HENRY BAXTER, of 71, Gelderd Road, 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:-
This invention relates to improvements in the operating mechanism of stone
breaking and ore crushing and other machines where similar movements are required,
as for instance, in punching aud shearing machines.
Its object is to provide means whereby the connecting rod or pitman of the machine
is carried in hearings attached to or forming part of the moveable jaw, instead of
being mounted in bearings in the framework as hitherto. By this means an increased,
say, crushing or breaking pressure is imparted to the moveable jaw without any
serious loss of movement.
In the accompanying drawings the invention is shown as applied to a stone breaking
and ore crushing machine, but I would distinctly have it understood that it may be
applied to other machines where similar movements are required, such as for instance
punching and shearing machines.
Fig. 1, is a sectional elevation and Fig. 2, a plan looking at the top of a stone
breaking and ore crushing machine constructed according to this invention.
The parts of the machine bereafter described, are-except the moveable jaw-each
constructed in the usual and well known manner for this class of machine and when
taken separately there is nothing novel in their construction, but the essential and
special feature of this invention consists in so arranging and combining them together
that an increased, say, crushing or breaking pressure is imparted to the moveable jaw
without any serious loss of novement. A is the main framework of the machine
which may be formed in one piece or built up in parts bolted or otherwise fixed or
secured together by any convenient means, and it may be made of any suitable
material, such as, say, cast iron or steel. B the fixed jaw which is arranged in the
framework A in the usual position. C the moveable jaw stock which is mounted on,
and to be pendant from a shaft D carried in bearings formed for its reception in the
framework, C the renewable jaw face fixed to the jaw stock C.
The use of caps or covers for the bearings of the shaft D is optional, and I prefer to
dispense with their use as shown in the drawings. The shaft D may, either, be a
fixture in its bearings, in which case the moveable jaw stock C would oscillate thereon ;
or the said shaft may be a fixture in the jaw stock C, in which case the projecting

page_text: suart would form trunnions on which the moveable jaw stock C could
oscillate in its said bearings.
Instead of mounting the connecting rod or pitman E on a shaft carried in bearings
on the framework of the machine as is usually done, I arrange the bearings F for the
5 shaft G to be formed in the arms or brackets-hereafter termed brackets H-which
may form a part of or be attached to the moving jaw stock C of the machine. In
the drawings the brackets H are shown forming a part of the moveable jaw stock
which is bifurcated to form a pair of brackets H and they are provided with the
caps I, as shown, which are bolted or otherwise fixed to the said brackets for retaining
O the shaft G in position.
On the shaft G is or are mounted, or fixed, one or more eccentrics J on which the
connecting rod or pitman E is pendantly mounted.
:
The eccentric or eccentrics J is or are arranged to rotate in the eye or hole in the
upper part of the pitman E as shown. On the said shaft G is also mounted and fixed.
the usual driving pulley K and fly wheel or wheels I.
connecting rod or pitman E is retained in position by a pair of toggles M respectively
The lower end of the
interposed on each side thereof in the usual manner between the moveable jaw
stock C and the moveable wedge N for adjusting the toggle block O of the machine.
The parts are supported in the machine and operated in the usual manner.
Above or below the position of the said toggles is arranged and mounted a second
set or sets of toggle levers-hereafter termed the drawback rods P, Q,-in the form
of suspension levers, or rods, and with or without a spring buffer or buffers R of the.
usual and ordinary construction. The drawback rods P, Q are arranged respectively
on each side of the pitman or connecting rod E. to which their Their inner ends are
attached together in joint form with a runner U interposed between them,-upon the
periphery of the runner the lower portion of the pitman or connecting rod E rests and
is supported thereby in the usual and ordinary manner, whilst their outer ends are
connected to the framework A and moveable jaw stock C, that is to say, the outer
end of drawback rod P is adjustably secured to the spring buffer R at the rear end of
framework A. Or the ends of these last named levers, rods, or chains, are connected
to a very strong eye-bolt or bolts, or it or their equivalents secured to the rear end of
the machine.
While the outer end of drawback rod Q-which is made in two parts so as to
be capable of adjustment by means of nut S, having a right and left hand thread cut
therein or otherwise-is attached to the moveable jaw stock C. If desired a chain or
chains may be used in place of one or both of the drawback rods P, Q.
These last named toggle levers, rods, or chains not only aid in suspending the con-
ecting rod or pitman, but also retain in retaining it in position during the move-
nent of the eccentric or eccentrics.
In place of the toggle levers, rods, or chains, the whole of the working parts may
e held in position by a rod and strong spring attached respectively to the moveable
w stock and to the outer or other portion of the framework.
Side wedges T may, or may not, be inserted in the framework A to provide a ready
eans for renewing this portion of the framework A as it wears away by the recipro-
tion of the moveable jaw stock C.
By mounting the shaft G in the bearings F of brackets H, forming part of or
tached to the moveable jaw stock C, instead of in bearings in framework A as is
ually done, the whole weight of the fly wheels L, pulley K, and connecting rod or
tman E, which are mounted or fixed on said shaft-are utilized for increasing the
ushing or breaking pressure that is imparted to the lower end of the said moveable
v stock, whenever the eccentric or eccentrics J is or are caused to rotate and move
e upper part of the connecting rod or pitman E rearwardly simultaneously with the
gularly and downwardly movement of the said pitman.
ssible owing to the pitman E being suspended at its lower end by upon the runner
This movement is per-
the drawback rods P, Q and the interposition of the toggles M as previously
cribed. As soon as the eccentric or eccentrics J is or are rotated, passed it or
ir nadir or lowest point or points the connecting rod or pitman E will by the

page_text: continued rotation of the eccentric or eccentrics, commence to return to the position
shown in the drawings and in so doing the moveable jaw C will by the drawback
rods P, Q, and toggles M be withdrawn from the fixed jaw B.
Other parts of the machine not particularly described or shown may be of the usual
and ordinary construction.
It will be readily understood that instead of placing the eccentric shaft directly on
the brackets H of the jaw stock C, one or more levers may be arranged so as to rest
on this position, and to be operated by a connecting rod and crank or eccentric shaft
supported in bearings mounted in or on the framework so that the actual weight or
pressure of the operating parts is imparted directly to the jaw stock C, for breaking
or crushing the material operated upon.
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 stone breaking, ore crushing, and other machines the operating mechanism
constructed and arranged substantially as described, and mounted upon a shaft carried
by a moving part of the machine as and for the purposes set forth.
2. In a stone breaking and ore crushing machine the movable jaw stock armed
with brackets substantially as described and for the purposes set forth.
3. In a stone breaking and ore crushing machine the combination of the moveable
jaw stock armed with brackets as described and suspended by a shaft or trunnions
mounted in bearings in the framework of the machine, with a shaft carried in in
bearings formed in said brackets and having mounted and fixed thereon the fly wheels,
driving pulley and one or more eccentrics on which the upper end of the connecting
rod or pitman is mounted whilst its lower end is in connection with toggles and
drawback rods, all arranged as illustrated and operating as hereinbefore described.
4. The arrangement and combination of the various parts forming the machine as
a whole, substantially as herein described and illustrated, whereby the weight of the
operating mechanism is utilized for increasing the crushing or breaking pressure of
the moveable jaw stock.
Dated this Twants airth dan of Inle 1900