Improvements in Machinery for Bevelling Glass.
Year: 1894

page_text: Date of Application, 21st Mar., 1894
Complete Specification Left. 2.st Dec.. 1894-Accepted. 9th Mar.. 1895
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Bevelling Glass.
GEORGE HARRINGTON of Cyrene Villa Lancashire Road Bishopston Bristol in
the County of Gloucestershire, Manager of Looking-glass Factory do hereby
declare the nature of this invention to be as follows :-
My invention has for its object, improvements in machinery for bevelling
glass.
By these improvements I am able to rough, smooth, or polish the bevil of
several pieces of glass of various sizes & thicknesses at one operation.
I am also able to set my machine so that it will rough the glass automatically or
without altering the parallelism.
I am further able to arrange my machine, so that one workman can attend to
several machines while each machine is bevelling several pieces of glass.
According to my invention, I construct a machine consisting of a press A A
mounted upon two parallel rails B B which are fixed upon two standards C C.
The two standards are fixed at convenient distances from an horizontal grinding
or polishing wheel D D.
The two rails are made to rise & fall by means of worm gear E E.
The press is attached to the rail farthest from the wheel by means of two rods
bent at the ends in order to clip the rail, which is rounded so as to receive the
clips F F.
The rods are made to move in sockets & are fastened by means of nuts &
screws G G so that the press may be adjusted to any required distance from the
wheel.
The press is fitted with an inside layer of rubber both top & bottom, the top
layer having an arrangement of small springs at the back in order to allow for the
various thicknesses of glass.
Alternate layers of glass & thin rubber placed in position are then pressed
together until they become rigid.
The weight of the whole, including the press is then tested by means of an
overhead rope H H, attached to that part of the press nearest the wheel & the
required pressure secured by adjusting the necessary weight at the end of the rope,
after it has passed through the overhead pullies I I.
The rails are then adjusted to obtain the required angle for bevelling & also in
order to allow the glass J J, to rest upon the wheel.
The rail nearest the wheel is then lowered sufficiently to stop the press when the
operation of grinding or polishing is completed.
Dated this Twentieth day of March 1894.

page_text: Improvements in Machinery for Bevelling Glass.
I, GEORGE HARRINGTON of Cyrene Villa Lancashire Road Bishopston,
Bristol, in the County of Gloucestershire Manager of Looking-glass Manufactory
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:-
My invention has for its object, improvements in machinery for bevelling glass.
By these improvements I am able to rough, smooth, or polish the bevel of
several pieces of glass of various sizes & thicknesses at one operation.
I am also able to set my machine so that it will rough the glass automatically or
without altering the parallelism.
I am further able to arrange my machine, so that one workman can attend to
several machines while each machine is hevelling several pieces of glass.
According to my invention I construct a machine consisting of a press A A,
mounted upon two parallel rails B B, which are fixed upon two standards C C.
The two standards are fixed at convenient distances from an ordinary horizontal
grinding or polishing wheel.
The press is attached to the rails by two standards DD, which are made to clip
the rails so that the press may slide upon them from end to end.
The press is made to rise & fall by means of worm gear E E, & is fixed at any
angle by a set spring F F, the set spring being also used to adjust the required
pressure when the glass G G is resting upon the grinding or polishing wheel; & at
the same time acts as a preventative to breakage of glass likely to occur when the
glass is held too rigidly upon the wheel.
The press is fitted with an inside layer of rubber both top & bottom, the top
layer having an arrangement of small springs at the back in order to allow for the
various thicknesses of glass.
One or more layers of glass & rubber are then placed in position & pressed until
they become rigid.
The press is then set in motion by any ordinary method such as eccentric gear,
& two set pins H H are adjusted so as to stop the press from lowering further than
is required to complete the operation of grinding or polishing.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
1. In glass bevelling machines the press A A substantially as herein set forth.
2. In the glass bevelling machines herein described the method of obtaining the
angle of the hevel & adjusting the pressure, by means of turning the set spring,
substantially as herein set forth.
3. In glass bevelling machines the novelty of bevelling one side of several pieces
of glass of various sizes & thicknesses, at one operation by machinery, substantially
as herein set forth.
4. In glass bevelling machines, the novelty of grinding the bevel on glass
without readjusting the machinery when once set in motion substantially as herein
set forth.
5. In glass bevelling machines the novelty of automatic stopage when the
operation of grinding or polishing is completed.
Dated this Twentieth day of December 1894.
GEORGE HARRINGTON.