A New Method of Applying Electro-motors to Lathe Work.
Year: 1894

page_text: e of Application, 23rd Feb., 1894-Accepted, 31st Mar., 1894
COMPLETE SPECIFICATION.
A New Method of Applying Electro-motors to Lathe Work.
We, ARTHUR CHAMBERLAIN and GEORGE HOOKHAM, both of Nos. 7 and 8
New Bartholomew Street, in the City of Birmingham, Manufacturers, 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:—
Our invention relates to the application of electro-motors to lathe work, such as
grinding or polishing, and our object is to drive a spindle carrying an emery wheel,
or other grinding or polishing device, in a convenient manner permitting of
accurate regulation of speed of rotation while at the same time allowing the said
wheel or other grinding or polishing device to be traversed to and fro, along the
whole length of the work in the lathe.
Our invention consists in the method of mounting an electro-motor upon a slide
rest, and in the arrangement whereby the said electro-motor, with an emery wheel
or other polishing or grinding device is made suitable for lathe work, and is
permitted to he traversed along the work.
Referring to the two accompanying sheets of drawings-
Figure 1 is an end elevation part in sectiou, showing an electro-motor carrying
au emery wheel on its spindle, attached to the slide rest of a lathe.
Figure 2 is a plan corresponding to Figure 1.
Figure 3 is an end elevation of the electro-motor on a larger scale.
Figure 4 is a plan corresponding to Figure 3.
The electro-motor is preferably of the self regulating type, and is arranged with
a single electro magnet D, placed at the back of the armature spindle C, in order
to allow the emery wheel B to be approached close to the work in the lathe. The
electro-motor is carried by a strong bracket I, which is secured by the tool holder
in any usual manner to the lathe slide rest H, and is further supported when
required by the screw 13, screwing into the socket I, and caused to come into
contact with the saddle K, of the lathe. The emery wheel B, is carried on the
armature spindle C, and is thus rotated by the electro-motor.
A, is the work in the lathe to be ground up by the.emery wheel B, and the said
wheel B is traversed to and fro along the work A, just as a cutting tool is traversed
by the usual self acting or hand controlled mechanism of the slide rest.
In this manner we are enabled to truly grind up any article in the lathe such
as A, and we rotate the emery wheel or polishing device with the greatest possible
steadiness, and at the same time apply the emery wheel to any part of the work
with perfect ease.
Carbon rods E, E', are used to convey current to the commutator, and the said
commutator with the ends of the carbons are enclosed by the case G. F is the
switch for starting or stopping the motor. A polishing or buffing arrangement
may be attached to the motor spindle C when desired instead of a grinding
wheel.
Although we have described the electro-motor as carried by the bracket I,
arranged to be held in the slide rest, yet we may arrange attachments of other
kinds to connect the motor and the slide rest, without departing from our
invention.

page_text: Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. Mounting an electro-motor on the slide rest of a lathe, in such manner that
an emery wheel or other grinding or polishing device carried on, and rotated
by the motor spindle, may be traversed along the work in the lathe, and applied
to grind or polish the said work, substantially as hereinbefore described.
1
2. The electrically actuated grinding, or polishing arrangement, hereinbefore
described as illustrated in the accompanying drawings.
Dated this 22nd day of February 1894
1B
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicants.