Improvements in and relating to Coal Cutting Machines.
Year: 1895

page_text: Date of Application, 12th Mar., 1895-Accepted, 13th Apr., 1895
COMPLETE SPECIFICATION.
Improvements in and relating to Coal Cutting Machines.
We, THOMAS BISHOP ANDREWS CLARKE, Electrical Engineer, and ROBERT
WILLIAM CLARKE, Mining Engineer, both of Bellground, Tankersley, in the
County of York, do hereby declare the nature of this invention and in what
manner the same has to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates to improvements in coal cutting machines, and particularly
to the construction of side wheel coal cutting machines driven by an electric
motor.
We have illustrated our invention in the annexed sheets of drawings, in which
Fig. 1, represents a plan of the trolly frame with electrical motor and gearing.
Fig. 2, elevation of same.
In carrying out our invention which relates more particularly to the gearing of
such machines we construct a trolly A, which consists of a framework supported
upon suitable wheels for running upon rails as is usual with such machines, and
centrally or thereabouts upon such framework we fix an electric motor B, of
sufficient power for the purpose required, having its axis or central shaft C,
arranged longitudinally with the framework, and having upon its axle, a bevel
wheel D.
This bevel wheel D, engages with a larger bevel wheel E, fixed upon a cross
shaft F, supported by the framework A, and upon the same shaft is fixed a
pinion G, gearing into a corresponding wheel H, of larger diameter fixed upon
a second cross shaft I, one end of which projects from the frame and is fitted
with a bevel wheel J, which drives the horizontal cutter or wheel which is
not shown in the drawing as it forms no part of our invention and is well
understood.
The motor B, is provided with bearings or foundation brackets K, cast solid
with it, and these hearings rest upon and are secured to supporting bars or
carriers L, which are made for their ends to rest upou the sides of the frame A,
where they are secured by bolts, and the centre part L2, is depressed to pass
under and support the motor, which is firmly bolted to each carrier or hanger.
The frame is made of angle iron or steel, and the line wires from the dynamo
are carried underneath and within the angle to the motor all such wires and
connections being carefully protected to avoid danger; the switch box being
fixed at one end of the frame, but we make no claim to this arrangement
separately.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :
1. In a coal cutting machine with a side wheel cutter, the combination with an
electric motor B, supported upon hangers or carriers L, carried by the frame A, of
an arrangement of driving gear between the motor and the rotary cutter, consisting
of a pair of bevel wheels D, E, a spur pinion and wheel G, H, and bevel pinion J,
with their respective shafts F, L, arranged and operating in the manner hereinbefore
described with reference to the drawings.
2. In a side wheel-cutter coal machine, the combination with an electric motor,
of the intermediate driving gear, constructed and arranged as hereinbefore described
and shown in the drawings.

page_text: 3. In a coal cutting machine as hereinbefore described the method of supporting
the electric motor, by casting upon the motor the standards or foundation brackets K,
and securing them to depressed hangers L, supported by the framework A, in the
manner hereinbefore described and shown.
Dated the 9th day of March 1895.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.