An Improved Apparatus for Bevelling Small Pieces of Glass.
Year: 1887

page_text: Date of Application, 31st Jan., 1887.
Complete Left, 19th May, 1887.
Complete Accepted, 8th July, 1887.
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Bevelling Small Pieces of Glass.
We EDWARD HENRY PEARCE of Bridge Street Broad Street Birmingham in the
County of Warwick Manufacturer and JONATHAN HULLS of 73 Upper Cox Street,
Balsall Heath in the County of Worcester Manager do hereby declare the nature of
our said invention to be as follows:-
:-
Our invention has for its object an improved apparatus for bevelling small pieces of
glass which is specially intended to economise time by manipulating a number of
pieces at one time instead of each piece separately as the custom hitherto has been.
We make a case or cramp sufficiently long to take in any desired or convenient
number of sheets or squares of glass laid back to face and secured therein with an
inclination corresponding to the bevel required to be produced upon the edge or edges
thereof. When one set of edges are bevelled the pieces are turned to another set of
edges and treated in like manner. The cramp or case for holding the pieces generally
consists of a base and two ends which are adjustable by a screw or screws in a dovetail
or other slide so as to set any width of opening according to the number of pieces to be
ground or their thickness and the ends may have fitted thereto changeable blocks giving
the various angles to which the pieces are to be ground or the ends may be adjustable
by set or other screws and hinged plates to answer the same purpose or a case may
be kept for each particular bevel but in any case the principle of grinding is
We also sometimes make the cramp to taper on one side from
end to end so as to grind one end and one side without turning the glasses.
To facilitate the fixing of the squares, hexagon, octagons or other pieces we may
form the base or a false base with a V groove or trough therein which assists the
glasses to fix themselves in a fairly true line without carefully setting but otherwise
the ends or end or a false end or set screws are or is adjustable in a groove to tighten
up any desired number in the frame. The faces of the V groove may be lightened out
in the pattern so as to only present two or more guide lines like the edge of a
straight edge for the glasses to rest against. The back is provided with a joint and a
quadrant with stops or other provision by which the two faces are alternately presented
the same.

page_text: to the grinder at the required angle for grinding. An adjustable stop is also provided
to indicate when the required amount of bevel has been ground upon any side of the
said pieces of glass.
We manipulate the case or cramp by an attachment to the back such for instance as
a knuckle jointed or ball and socket jointed rod which may be arranged to any angle
quickly and this is attached to the arm of a machine which may be trailed backwards
and forwards across the face of the grinder by any suitable arrangement of gear
mounted upon a stout standard. The standard may itself turn or the arm only or the
case may be worked by hand. The case or cramp is also free to rise and fall as the
pieces are ground in a suitable elevating slide having means for an adjustable pressure
whether by a spring or springs or balance weights or screw and thus the cramp or
case when once fixed will continue its motion automatically until the process is
completed and the case or cramp may be changed from one grinder to the other so as
to smooth and finish as desired. A plate and set screws may connect the rod and
cramp so as to allow of fine adjustment when necessary.
The cramp as worked in its inverted condition may have the glasses set upon an
extra surface plate instead of piled upon the base of the cramp as before explained.
Our arrangement would generally be used for small, squares of glass but other
shapes with flat sides may be ground thereby such as hexagon, octagon or other shapes
when carefully fixed to a guage.
The fixing would be very simple indeed especially if a connecting side bar is fitted
to the two ends of the cramp or case so as to place each piece of glass upon the base
against the side piece which would entirely prevent the need of nice adjustment which
occupies so much time.
Dated this 90th of
1007
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for Applicants.

page_text: We EDWARD HENRY PEARCE of Bridge Street Broad Street Birmingham in the
County of Warwick Manufacturer and JONATHAN HULLS of 73 Upper Cox Street
Balsall Heath in the County of Worcester Manager do hereby declare the nature of
our said 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 has for its object an improved apparatus for bevelling small pieces of
glass which is specially intended to economize time by manipulating a number of
pieces at one time instead of each piece separately as the custom hitherto has been.
We make a case or. cramp sufficiently long to take in any desired or convenient
number of sheets or squares of glass laid back to face and secured therein with an
inclination corresponding to the bevel required to be produced upon the edge or edges
thereof.
When one set of edges are bevelled the pieces are turned to another set of edges
and treated in like manner. The cramp or case for holding the pieces, generally
consists of a base and two ends which are adjustable by a screw or screws in a dovetail
or other slide so as to set to any width of opening according to the number of pieces
to be ground or their thickness and the ends may have fitted thereto changeable blocks
giving the various angles to which the pieces are to be ground or the ends may be
adjustable by set or other screws and hinged plates to answer the same purpose or a
case may be kept for each particular bevel but in any case the principle of grinding is
the same.
To facilitate the fixing of the squares, hexagons octogans or other pieces we may
form the base or a false base with a V groove or trough therein which assist the
glasses to fix themselves in a fairly true line without carefully setting but otherwise the
ends or end or a false end or set screws are or is adjustable in a groove to tighten up
any desired number in the frame. The faces of the V groove may be lightened out
in the pattern so as to only present two or more guide lines like the edge of a straight
edge for the glasses to rest against. The back is provided with a joint and a quadrant
with stops or other provisions by which the two faces are alternately presented to the
grinder at the required angle for grinding.
An adjustable stop is also provided to indicate when the required amount of bevel
has been ground upon any side of the said pieces of glass.
We manipulate the case or cramp by an attachment to the back such for instance as
a knuckle joint or hall and socket jointed rod which may be arranged to any angle
quickly and this is attached to the arm of a machine which may be trailed backwards
and forwards across, the face of the grinder by any suitable arrangement of gear
mounted upon a stout standard. The standard may itself turn or the arm only or the
case may be worked by hand. The case or cramp is also free to rise and fall as the
pieces are ground in a suitable elevating slide having means for an adjustable pressure
whether by a spring or springs or balance weights or screw and thus the cramp or case
when once fixed will continue its motion automatically until completed and the case or
cramp may be changed from one grinder to the other so as to smooth and finish as
desired.
A plate and set screws may connect the rod and cramp so as to allow of fine
adjustment when necessary. The cramp as worked in its inverted condition may have

page_text: the glasses set upon an extra surface plate instead of piled upon the base of the cramp
as before explained.
Our arrangement would generally be used for small squares of glass, but other
shapes with flat sides may be ground thereby such as hexagon, octogan and other
shapes when carefully fixed to a gauge. The fixing would be very simple indeed
especially when a connecting side bar is fitted to the two ends of the cramp or case so
as to place each piece of glass on the base and against the side piece which would
entirely prevent the need of nice adjustment which occupies so much time.
In order that the invention may be well understood and carried into practice without
difficulty we have appended two sheets of drawings upon which examples of its
application are shewn and which will be a sufficient guide to others to enable any
ordinary conditions to be met.
Figure 1 is a side elevation of a case or cramp in which the glass is fixed on one of
the flat straight edges ready for bevelling.
Figure 2 is a section on line A. B.
Figure 3 is an end elevation of the right hand end with the wheel E removed.
Figure 4, is a side elevation of an angular case with a number of pieces of
glass F. F. F. secured therein on the angle so that two sides of each piece may be
Bevelled before they are turned round and which have already been ground on two
edges of each piece and are now changed to the opposite edges which are also shown
ground to a bevel. This only requiring the glasses to be reversed once to complete the
four sides.
Figure 5 is a sectional elevation looking to the right hand and thus showing the
pieces of glass F.
Figure 6 is an elevation of the left hand end.
Figure 7 is a perspective view of Figure 4.
Figure 8 is a section of an angular case so made as to allow the sides Hand S to
be adjusted to any angle as well as the inner ends thereof.
Figure 9 is a side elevation of the adjustable case shewn in section by Figure 8.
Figure 10 is an inverted plan of the case shewn by the two previous Figures.
Figures 1, 2 and 3 show the manner of holding the glasses when they are fixed four
times to grind four edges such as in the case of squares. The end piece G is solid with the
base K. We call K the base because the glasses are usually fixed therein when the case
is inverted it being now shown as it appears when grinding upon a horizontal
grinder J. The ends D are either made solid with the base K or they may be
made removable as shown at Figure 1 by the use of holts, studs, set pins or other
means. The advantage of having them loose is that the same case in other respects will
do for a number of bevels whether little or great or for even square edges by
simply changing the block D to one of a different bevel because the flap Cis adjustable
to any bevel within a reasonable range because it is hinged to the sliding block (1
at c². The sliding block is made with a neck c³ and cover plate c¹ to slide in a slot k¹
cast or made in the base K. The action is as follows:-When the case is inverted the
glasses F. F. F are placed upon the base K so as to lean against the bevel block D
resting upon a suitable rubber or other soft face d'. When the sliding hinged
flap is brought up against the back glass with its rubber or other soft face bearing
thereon where it is secured by the set screws L and L both of which are operated by
a changeable handle or hand wheel E.
The case or cramp is attached to the arm M of any suitable machine which is
capable of moving the glasses with a radial reciprocating or other movement upon the
grinder J but this attachment may be made in a number of ways such for instance as
with a bored socket and turned pin or a planed surface and flat flanged joint fastened
by screws or a vacuum joint so that the case could be removed from one grinder to a
smoother a sufficient number of times to complete the finish without changing.
Figures 4, 5, 6 and 7 illustrate an angular case or cramp which is shown with the
glasses F. F. F fastened therein.
In this case there are two bases viz:-the side N being one and P another.
The end is in this case either cast or fixed fast to the base the rubber or other

page_text: soft face against which the glasses bed and a hinged sliding flap R is secured
against them by suitable screws as in the previous case. The advantage of this
angular case is that when one lot of edges f'" are ground the case simply
requires turning to the base P when the edges f may likewise be ground thus only
necessitating two fixings to grind four edges of cach piece. The glasses are easily set
upon the projecting edges or lines p' and p² the metal being cut away at the corner p³
and also at similar parts of side N so as to minimize the bearing surface upon the edges
of the pieces F to be fixed therein.
In angular cases or cramps the slightest alteration in the inclination of the
pieces F necessite an alteration in the angle of the sides N and P to each other and
to meet this difficulty we make adjustable cases such as are shown at Figures 8, 9
and 10 where the sides H and S are hinged to a base piece Wat and sand each side
has an arm or s² or their equivalent which carry swivel nuts 3 and 3 so that the
The
angle of the sides H and S is easily altered by the right and left handed screw T.
sides are cast or formed with recesses and s which leaves the projecting strips and
and sands against which the glass rests i.e. generally on these four strips
which are made quite true. The ends U and V are cast or made fast to the base
piece W and hinged ends X and Y are set to any bevel by the set screws u¹u² u³
and at one end and v¹, 3 and 1 at the other end. One of the ends in this case Y
slides in a slot in the base W as previously explained in regard to Figures 1, 2 and 3.
Sufficient space is left between the edges of the ends X and Y to allow the sides H
and S to be brought inwards when necessary. The base W may have a dovetail w
to fix to the arm of a machine or it may have a double base 2 and w³ as shewn
by dotted lines which is equivalent to the two backs P and N shown at Figures 5
and 6. The flat base is however sufficient because a quadrant may be attached to
the arm M by which the case can be turned from one base to any desired angle
or just to the two angles against suitable regulating stops. While these glasses
are still in the case they may be grooved as shewn by Figure 11
checkered as shewn at Figure 12 which is easily accomplished over suitable
cutting stones whether V edged round or other shaped. In the checkering it
is merely necessary to fix to M a dividing plate and slide similar to a slide rest or
dividing machine so that various lines may be truly divided over the cutting stone
and thus figured edges of almost any description or design may be obtained thereby.
These cases may be used entirely by hand or partly by hand and the glasses may have
their edges ground to any angle from square to the longest slant.
or
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.
First-The improved apparatus for grinding bevelling or ornamenting a number
of pieces of glass at once consisting of a flat case having inclined or square ends
whether fast or moveable in which the pieces of glass are held and manipulated upon
the grinder substantially as and for the purpose herein set forth.
Second-The improved apparatus for bevelling a number of pieces of glass at once
being an angular case consisting of two fast or adjustable sides with corresponding
ends whether square or bevel in which the pieces of glass are held on the angle so that
the four sides may be ground by only once refixing the pieces substantially as and for
the purpose herein set forth.
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for Applicants.