An Improvement in the Construction of Crushing and Granulating Machines.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
An Improvement in the Construction of Crushing and Granulating
Machines.
CHARLES HORATIO KEATS, Commercial Traveller, Richmond House, Harding-
stone, Northampton, Northamptonshire, do hereby declare the nature of this
invention to be as follows:--
A machine with two vertical corrugated jaws one fast and the other loose
and swinging on a pivotted pin, the bottom end of swinging jaw has a recess
or groove at back which receives one end of a stretcher rod, the other end of
said stretcher rod is received by the front groove or recess at the bottom end
of a long lever the recess or groove at the back part of said lever is received
by a rounded part of the frame of the machine which takes the thrust or any
force exerted on the long lever handle. This construction of levers & toggel
joints manipulated by hand power will give a crushing force to the jaws of
about 250 times the amount of force used when exerted upon the handle at
the top end of lever.
Dated this 14th day of March 1898
An Improvement in the Construction of Crushing and Granulating
Machines.
-
I, CHARLES HORATIO KEATS, of Richmond House, Hardingstone, Northamp-
ton, Engineer, do hereby declare the nature of this invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement;
My invention relates to an improvement in the construction of crushing
and granulating machines, the object being to produce a simple machine of
this kind which shall have great efficiency and require less power to use than
anything similar on the market. In carrying my invention into effect I pro-
ceed in or in about the following manner, making reference to the accompanying
drawing in which Fig. 1 is a longitudinal section of the complete machine
and Fig. 2 a plan of a detail. I provide a casing a of suitable length width
and height, closed at the ends b and c and open at top and bottom. This casing
can be attached by feet to the floor or other support. Within the case and
in contact with the end b is a fixed jaw e which can be slid into grooves in the
sides of a or kept in place in any other suitable manner. The face of e is ribbed

page_text: .
or corrugated from top to bottom and scored across from side to side so as to
produce teeth as at f. In front of e is another jaw a pivotted and free to move
on a pin h. The jaw g is corrugated from top to bottom; the ridges of the
corrugations on g fitting into the spaces between the ribs on the jaw e (Fig. 2).
If desired the ribs on the jaws e and g may be placed slantingly instead of verti-
cally or the surfaces of e and g may be otherwise formed to increase the crushing
impact of so much of their surfaces as come into contact during the act of
crushing the material pit between them. The end c is made wedge shape as
shown at i and below this is a hook j. Another hook k is provided at the bottom
of the moveable jaw g and to these hooks are attached the opposite ends of a
spiral spring the tendency of which is to draw the moveable jaw g away from
the fixed one e. Near the bottom of i is a rounded ridge m and near the bottom
of the jaw is a rounded groove n, m and n crossing their respective parts
from side to side. I provide a lever o having across its lower end two grooves p
and g. I also provide a toggle plater having rounded ends s and f. The end s
fits the groove at the bottom of g and the end t fits the groove at the end
of o. The projection m enters the groove q. A screw is passed through the
end and can be turned in and out to regulate the stroke of the crusher. In
use the material to be crushed is put into the space between jaws e and g and
the lever o moved to and fro so as to give a "nipping" action between the lower
ends of the jaws e and g. The material is thus reduced to small fragments
which fall out below the jaws. A series of sieves can be provided below or in
connection with the crusher so as to receive the crushed material and sort it
into various grades. If desired the ends of the toggle plate may be pivotally
attached to the moveable jaw and the end of the lever. It is proposed to make
the jaws of chilled metal and the remaining parts of cast or wrought metal as
may be most suitable.
I do not confine myself to the precise shapes or relative proportions shown
in the drawing as they may be varied without departure from the essential
features.
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. An improved crushing and granulating machine consisting essentially of
a casing open at top and bottom, within which casing are a fixed jaw and a
moveable one, the jaws having corrugated or roughened surfaces facing one
another, the ridges of the corrugations of the one fitting the spaces between the
corrugations of the other, the lower end of the moveable jaw being brought
into intermittent contact with the lower end of the fixed jaw by the to and fro
movement of a lever operating a toggle plate between the end of the lever and
the end of the moveable jaw, a spiral spring. being provided below the crusher
and tending to withdraw the bottom end of the moveable jaw away from the
fixed jaw, and a screw being provided to regulate the throw of the lever and
toggle, the whole substantially as described in the above specification and exem-
plified in the accompanying drawings.
2. The combination of parts substantially as described in the above specifica-
tion and exemplified in the accompanying drawing and together forming and
operating as an improved crushing and granulating machine.
Dated this 13th day of December
1898
HUGHES & YOUNG,
23, Coleman Street, E.C., Agents.