An Apparatus or Clamp for the Holding of Glass Plates in Bevelling.
Year: 1895

page_text: Date of Application, 16th Nov., 1895.
Complete Specification Left, 17th Aug., 1896-Accepted, 19th Sept., 1896
PROVISIONAL SPECIFICATION.
An Apparatus or Clamp for the Holding of Glass Plates in
Bevelling.
I, JONATHAN HULLS of The Cedars, Frederick Road, Stetchford, near the City
of Birmingham, Manager of Works, do hereby declare the nature of this invention
to be as follows,:—
This invention has relation to improvements in apparatus or means for setting to
a given angle and, at the same time, holding together a number of glass plates to be.
operated upon collectively during the process of bevelling.
The principle object of my invention is an automatic and self-adjusting grip.
In carrying out one form of my improvements, I take a horizontal base framing,
longitudinally slotted upon its two opposite sides, and with the after end provided
with an obliquely inclined rest or rests supported by brackets and forming the
back seating or seatings upon which a number of glass plates to be bevelled rest
and take a like inclination consequent upon their bottom edges falling stepwise on
the horizontal plane so that only the offside angles of the bottom edges of the
plates come upon the horizontal bed consequent upon their planes following the
plane of the rests.
Fitted within the longitudinal grooves or slots and sliding or traversing upon the
top and underside surfaces of the bed are a pair of independently working slides,
each carrying at its back end a jaw or bracket plate inclined to the same angle as
the fixed back plates, between which jaws and back plates a series of plates are
nipped and clamped and held in an oblique position by springs encircling pairs of
parallel guide rods directed forwardly from the grip brackets or jaws and
passing through crossing end brackets carried at the fore part of the fixed bed or
framing.
These said springs, besides encircling the rods, impinge at their ends upon the
gripping slides and fixed cross end brackets respectively.
Connected to the fore ends of these rods are loops or handles, which can be
operated for opening the gripping slides either by hand or by a lever of the first or
second order, so that by pulling the handles or turning the lever, the gripping
brackets can be taken from their holding positions and the plates under treatment
removed from the apparatus.
On the other hand, to place a number of plates in position for bevelling, it is
only necessary to draw back the gripping slides, place the plates in position and
release the pull, when the springs take the gripping slides home and so effect a
self-adjusting grip.
In order to vary the angle of the rest brackets and gripping slides, I may hinge
the same at their lower edges and provide the said brackets and slides with
adjusting screws, either right or left handed, which, when rotated, raise or lower
the upper ends of the slides and brackets, and so adjust their inclination.
Instead of the screws being rotated the same effect may be produced by turning
confined nuts through which non-rotating screws connected to the slides or brackets
are made to rise or fall.
•
In carrying out a still further form of holder, I provide the horizontal bed with
either a fixed or adjustable inclined back rest as before and also a traversing
gripping slide or slides, fitted upon its or their inner side or sides with a vertically

page_text: rising and falling wedge or wedges capable of being raised and lowered by a screw
or equivalent. The inner side plane of the wedge, which may itself bo adjustable,
follows the plane of the rest bracket.
To fix in position a number of glass plates, first determine the angle of the bevel
they require to have put upon them and then place the plates face to face and
between the fixed and movable parts of the holder and then pull home the inclined
plane when the plates are clamped obliquely in their assigned positions.
Instead of the wedge being drawn home by a screw, it may be made self acting,
that is, it may be drawn home by a screw, so that by raising the wedge, dropping
the plates in position and then again releasing it, the gripping appliance is made
self adjusting.
I might add that the whole of the sliding parts may, if necessary, be held back
by a catch during the time that the grips are being placed between the jaws of the
holder.
Instead of employing a spring for returning the gripping slides to their holding
position they may be traversed by a screw or screws and instead of adjusting the
Angles of the gripping brackets and slides they may be hinged and connected
together so as to make them move in unison, aud when in position they may be
affixed by clamping screws or other means.
Dated this 15th day of November 1895.
JUNATHAN HULLS,
By Henry Skerrett,
Agent for Applicant.
An Apparatus or Clamp for the Holding of Glass Plates in
Bevelling.
I, JONATHAN HULLS, of The Cedars, Frederick Road, Stetchford near the City
of Birmingham, Manager of Works 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 :-
This invention has relation to improvements in apparatus or means for setting to
a given angle, and, at the same time, holding together a number of glass plates to
be operated upon collectively during the process of bevelling.
The principle object of my invention is an automatic and self-adjusting grip.
In carrying out one form of my improvements, I take a horizontal base framing,
longitudinally slotted upon its two opposite sides, and with the after end provided
with an obliquely inclined rest or rests supported by brackets and forming the
back seating or seatings upon which a Dunber of glass plates to be bevelled rest
and take a like inclination consequent upon their bottom edges falling step-wise on
the horizontal plane so that only the offside angles of the bottom edges of the
plates come upon the horizontal bed consequent upon their planes following the
plane of the rests.
Fitted within the longitudinal grooves or slots and sliding or traversing upon the
top and underside surfaces of the bed are a pair of independently working slides,
each carrying at its back end a jaw or bracket plate inclined to the same angle as
the fixed back plates, between which jaws and back plates a series of plates are
nipped and clamped and held in an oblique position by springs encircling pairs of
parallel guide rods directed forwardly from the grip brackets or jaws and passing
through crossing end brackets carried at the fore part of the fixed bed or
framing.
These said springs, besides encircling the rods, impinge at their ends upon the
gripping slides and fixed cross end brackets respectively.

page_text: Connected to the fore ends of these rods are loops or handles, which can be
operated for opening the gripping slides either by hand or by a lever of the first
or second order, so that by pulling the handles or turning the lever, the gripping
brackets can be taken from their holding positions and the plates under treatment
removed from the apparatus.
On the other hand, to place a number of plates in position for bevelling, it is
only necessary to draw back the gripping slides, place the plates in position and
release the pull, when the springs take the gripping slides home and so effect a
self-adjusting grip.
I might add that the whole of the sliding parts may, if necessary, be held back
by a catch during the time that the glasses are being placed between the jaws
of the holder.
Instead of employing a spring for returning the gripping slides to their holding
position they may be traversed by a screw or screws, and the gripping brackets or
jaws may be hinged to the base framing and connected together so as to make them
move in unison, and when in position they may be affixed by clamping screws or
other means.
Figure 1 of the accompanying drawings represents in side elevation an automatic
clamp for the purpose of holding of glass plates or lenses, placed face to face, at a
required angle or inclination during the process of bevelling.
Figure 2 is a longitudinal vertical section through one side of the apparatus,
with the glass plates in elevation.
Figure 3 is a cross section of the apparatus upon the dotted lines & Figure 2,
showing the pair of independent clamps taken home or up to the glasses to be held
by the medium of springs.
Figure 4 is a topside plan, with one of the sides in horizontal section, showing
the slots wherein the gripping jaws slide.
Figure 5 is a plan of the underside of the clamp, showing the underneath guide
rods and springs of the gripping jaws, their slides and the slide-rest carrying the
whole appliance.
The same letters of reference indicate corresponding parts in the several figures
of the drawings.
a is a horizontal base framing, standing upon and carried by a slide-rest a',
taking within a corresponding gap or groove of a bed upon which the clamp is
traversed for bringing the glasses whose edges are being bevelled up to the grinding
surface.
Running longitudinally up the said base framing, which has upright brackets a²,
at its rear end, are slots a, terminated by end stops a', and working within each of
them is a slido b', carrying an inclined jaw b, whose acting or gripping face b³,
presented to.and running parallel with the face c', of an inclined back rest 0, made
fast to the front end a' of the base framing a.
Each jaw b, and the foot 68, of each of the slides b¹, carry guide rods d, which
pass through holes a, a', in the upright back end brackets a, the whole four rods
terminating in and being braced or connected together by an adjustable cross head dª,
so that the said rods move collectively together with the jaws and their slides.
Surrounding the said guide rods and coming between the brackets a³, and the
shoulders, on the jaw are coiled springs e, and like springs.el, surround the guide
rods directed between the said brackets a, and the feet 3, of the slide, which
springs are opened out or compressed by the traversing of the slides and their jaws,
so that an operator forces back the slides, thereby compressing the springs, and
then introduces the plates f, to be bevelled, between the said jaws and the inclined
back rests, when the slides are released and the springs automatically take the jaws
up to the plates, which are thereby held in the proper inclined position, and a
straight cut upon the edges presented to the grinding surfaces gives the required
angle of bevel to any number of plates at the same time.
After one set of edges have been bevelled, then the plates are turned round and

page_text: another lot of edges bevelled and so on till the whole of the sides have been operated
пров.
If necessary the angle of the back rests and gripping jaws may be made angularly
adjustable by hinging the same to the base framing and slides respectively and then
affixing the same by clamping screws, and instead of the inclined back rests being
made rigid with the base framing, the same may be made to slide and be adjusted
by traversing screws or clamped in position by set-sorows or equivalent means.
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:-
First. A clamp or apparatus for holding glass plates during the process of
bevelling, having or being provided_with_angularly disposed gripping jaws or
inclined surfaces for clamping a number of glass plates together between them,
which said jaws may be either adjustable upon the base or the front jaw or jaws or
rests may be rigid and the back jaw or jaws movable, substantially as described and
Bet forth.
Secondly. A clamp or apparatus for holding glass plates during the process of
Bevelling; consisting of a base frame having at one end an inclined rest or rests,
opposed by adjustable gripping jaws carried by slides and brought up to their work
by 'coiled springs or their equivalents, hence the automatic holding of glass plates
placed between the opposed gripping surfaces; substantially as described and
set forth.
Thirdly. The general construction; arrangement and combination of the parts
of clamps or apparatus for the holding of glass plates in an inclined position
during the process of bevelling; operating substantially as herein described and
set forth.
JONATHAN HULLS,
By Heury Skerrett,
24 Temple Row, Birmingham, Agent for Applicant.