IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BREAKING OR CRUSHING STONE AND OTHER HARD AND BRITTLE SUBSTANCES
Year: 1879

page_text: LETTERS PATENT to George Dalton, of Leeds, in the County of York, Engineer,
for the Invention of "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR
BREAKING OR CRUSHING STONE AND OTHER HARD AND BRITTLE SUBSTANCES.”
Sealed the 18th November 1879, and dated the 28th August 1879.
'PROVISIONAL SPECIFICATION left by the said George Dalton at the Office
of the Commissioners of Patents on the 28th August 1879.
GEORGE DALTON, of Leeds, in the County of York, Engineer.
"IMPROVEMENTS
IN MACHINERY OR APPARATUS FOR BREAKING OR CRUSHING STONE AND OTHER
HARD AND BRITTLE SUBSTANCES."
My Invention relates to that description of machine or apparatus for breaking or
crushing stones and other hard and brittle substances, wherein such substances are
operated upon between a fixed or stationary jaw, and a moveable or oscillating
jaw, and consists of a peculiar combination or arrangement of apparatus whereby a
downward as well as a lateral crushing motion is imparted to the moveable jaw,
without exerting undue strain upon the machine.
In carrying out my Invention I mount the moveable or oscillating jaw upon a
cam or eccentric fixed upon the shaft which carries the loose or moveable jaw, and
upon which it oscillates, so that upon imparting rotatory motion to this shaft by
any suitable means, a rising and falling curvilinear motion will be imparted to
the jaw.
At the lower or bottom end of the moveable jaw I arrange a toggle, by means of
which in combination with the downward motion of the jaw, the crushing of the
stones or other material placed between the jaws is effected.
This toggle bears at one end against the moveable jaw, and at its opposite end
against an adjustable sliding piece fitted to the frame of the machine, so as to be
capable of being adjusted to vary the angle of the toggle, whereby the amount of
lateral throw of the jaw may be regulated so as to reduce the material operated
upon to any required size, whilst the great crushing strain is sustained by the
toggle and the main frame of the machine, and not by the shaft or shafts..

page_text: SPECIFICATION in pursuance of the conditions of the. Letters Patent filed by
the said George Dalton in the Great Seal Patent Office on the 17th February
1880.
GEORGE DALTON, of Leeds, in the County of York, Engineer. "IMPROVEMENTS
IN MACHINERY OR APPARATUS FOR BREAKING OR CRUSHING STONE AND OTHER
HARD AND BRITTLE SUBSTANCES."
My said Invention relates to further improvements in the machine or apparatus
for breaking or‍ crushing stone and other hard and brittle substances, which is
known as Blake's improved stone breaking machine, and it consists of a peculiar
arrangement and combination of the parts of the said machine, whereby a down-
ward motion as well as a lateral motion is imparted to the oscillating or movable
jaw, without exerting undue strain upon the machine.
In carrying out my said- Invention I operate the oscillating or movable jaw
direct from the actuating shaft, by mounting such jaw upon a cam or eccentric fast
on the said shaft, whereby a rising and falling curvilinear motion is imparted to
the jaw, and I employ a toggle or set of toggles between the jaw and an attachment
to the frame of the machine, by means of which toggle or toggles a lateral thrust is
communicated to the jaw during its downward motion, so as to produce the
required crushing action, the jaw being drawn back after each forward movement
by any suitable contrivance. The attachment to the frame to which one extremity
of the toggle or toggles is connected consists of an adjustable sliding piece, by
varying the position of which the angle of the toggle or toggles may be adjusted,
so as to regulate the amount of lateral throw of the jaw to suit the degree of
division to which the material under operation is required to be produced.
By the peculiar arrangement and combination of the parts herein before described,
the great crushing strain is sustained by the toggle or toggles and by the main
frame of the machine, and not by the actuating shaft.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same, and for that purpose shall refer to
the several Figures on the annexed Sheet of Drawings, the same letters of reference
indicating corresponding parts in both the Figures.
Figure 1 of the accompanying Drawings represents a sectional elevation of
machine constructed according to my said Invention, and Figure 2 is a detail plan
illustrating the mode of adjusting the angle of the toggle or toggles; A is the main
frame of the machine; B is the stationary jaw; C is the oscillating or movable
jaw, and D is the actuating shaft with an eccentric a thereon. I mount the
oscillating or movable jaw C upon the eccentric a of the shaft D, and I employ a
toggle or toggles E extending between the back of the jaw C, and an adjustable
piece F connected (by a screw and nut a¹) to the frame, so that by the combined
action of the eccentric a and the toggle or toggles E, a downward and lateral
motion is communicated, to the jaw, so as to produce the required crushing action
without any injurious strain being sustained by the actuating shaft; the jaw being
drawn back after each forward movement by any suitable spring connection G.
The toggle block b is adapted to guides at c, c, (Figure 2) in the frame A, and may
be caused to slide outwards or inwards in order to vary the angle of the toggle or
toggles by the act of raising or lowering the wedge F, and the lateral throw of the
jaw C be thus varied as required according to the degree of division to which the
material under operation is required to be reduced.
Having now described and particularly ascertained the nature of my said In-
vention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original,

page_text: and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is,-
•
Imparting a downward motion to the oscillating or movable jaw from the
actuating shaft in conjunction with a lateral motion by means of a toggle or toggles,
substantially as and for the purpose hereinbefore described.
In witness whereof, I, the said George Dalton, have to this my Specification
set my hand and seal, the Thirtieth day of January, One thousand eight
hundred and eighty.
GEORGE DALTON. (L.S.)