An Endless Belt Attachment for Grinding and Polishing.
Year: 1892

page_text: Date of Application, 1st Apr., 1892
Complete Specification Left, 31st Dec., 1892-Accepted, 1st Apr., 1893
PROVISIONAL SPECIFICATION.
An Endless Belt Attachment for Grinding and Polishing.
JOSEPH TWIST BILLS 50 Summer Row Birmingham occupation Mechanical
Engineer do hereby declare the nature of this invention to be as follows:-
The endless belt attachment is an arrangement which may be applied to shafting
& machine tools having circular motion such as lathes polishing & emery spindles
etc. for the purpose of "laying the grain on brass work, brass cocks gun & pistol.
work, bicycle work and articles of general hardware.
It is so arranged that it may be fixed on the above mentioned machine tools &
may also be fixed to the floor, wall, or ceiling in close proximity to the machine
tool.
Dated this 31st dev of March 1899
JOSEPH TWIST BILLS.
COMPLETE SPECIFICATION.
An Endless Belt Attachment for Grinding and Polishing.
JOSEPH TWIST BILLS 50 Summer Row Birmingham 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:-
The endless belt attachment is part of a machine that may be fixed to any
ordinary polishing lathe or a revolving shaft. It consists of one shaft running in
two bearings, 1 belt pulley driven off belt pulley on the polishing lathe or shaft.
1 flange pulley on the shaft, which drives a flange pulley on the polishing lathe or
shaft, around which runs the emery tape. The attachment is also fitted with a belt
tightener which consists of a lever, spindles & loose pulley & a regulating screw
for regulating the belt.
On the polishing lathe is fixed a wrought iron rest, in the centre of which there
are 2 steel rollers (hardened) on which the tape presses, also for resting some kinds
of work upon. The attachment may be fixed on to the floor, underneath floor,
wall, or any convenient place.
As said before the endless belt attachment may be fixed to any ordinary
polishing lathe as shewn by Fig. A. which is fixed on a pedestal B. On the
shaft S is fixed a driving pulley P which drives pulley Q. which drives shaft R.
The shaft R being supported by bearings G.
On this shaft R is keyed a flange pulley F which drives a loose pulley L on
shaft S. Around these two pulleys runs the endless belt which is known as the
emery tape upon which all the grinding & polishing is done.
On bearing G is cast a projection T which is drilled out in the centre to allow a
pin to be fixed upon it, upon which lever E works & carries at the end of it
pulley D. This lever & pulley (the belt tightener) is worked up & down by
means of a screw C. Lever E has a boss fixed upon it, which is drilled & tapped
to allow screw C to work the lever up & down so as to tighten to the required
tension.
On the polishing lathe is fixed a rest K which has been stated before for resting
some kinds of work upon it. This rest is made of wrought iron, & on the plate K
is fixed 2 hardened steel rollers, upon which the belt presses. These rollers are
hardened on account of the emery tape.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion & in what manner the same is to be performed, I declare what I claim is―
That, the endless belt attachment' saves the cost of a complete emery tape
machine.
Dated this 30th day of December 1892.
JOSEPH TWIST BILLS.