Year: 1886

page_text: I THOMAS IDE of the firm of T. and W. Ide of Glasshouse Fields, Ratcliff in the
County of Middlesex, Glass Benders do hereby declare the nature of this invention to.
be as follows:-
Heretofore in the bending of large plate and sheet glass, special separate and
expensive moulds have to be made for each size and curve to which the glass has to
be bent. Now according to my invention I make the moulds in pieces or sections
which are joined by feather and groove or otherwise connected by suitable means so as
to make up any required width, the pieces being of such widths and the joints so
arranged as to allow of the required sagging to form a wholly or partly convex or
concave mould. The side of the mould on which the plate or sheet glass is to be bent,
is covered with a layer of plaster composition which receives the exact and smooth
curved surface or partly curved and partly flat surface. The piece at each side of the
mould may be strengthened with angle iron to give stiffness. By the use of these
moulds I effect a saving in expense, time and labour, and at the same time a better
surface is produced, and on account of there being less expansion, the flat parts and
curves are more correct than heretofore.
BREWER & SON,
For the Applicant.

page_text: Improvements in Moulds for Bending Plate and Sheet Glass.
I, THOMAS IDE of the firm of T. and W. Ide of Glasshouse Fields, Ratcliff in
the County of Middlesex, Glass Benders, 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:-
Heretofore in the bending of large plate and sheet glass special separate and
expensive moulds have to be made for each size and curve to which the glass has to be
bent. Now according to my invention I make the moulds in pieces or sections which
are joined by feather and groove or otherwise connected by suitable means so as to
make up any required width, the pieces being of such widths and the joints so arranged
as to allow of the required sagging to form a wholly or partly convex or concave
mould. The side of the mould on which the plate or sheet glass is to be bent, is
covered with a layer of plaster composition which receives the exact and smooth
curved surface or partly curved and partly flat surface. The piece at each side of the
mould may be strengthened with angle iron to give stiffness. By the use of these
moulds I effect a saving in expense, time and labour, and at the same time a better
surface is produced and on the account of there being less expansion, the flat parts and
curves are more correct than heretofore.
In order that my invention may be fully understood 1 will now proceed to describe
same with reference to the accompanying drawings.
Figure 1 is an end elevation of two of the pieces or sections which in this case are
shown straight and which when put together in the number required to correspond
with the size and shape of the mould to be produced make up a mould constructed
according to my invention. Figure 2 shews in section such a mould as that before
referred to but drawn on a smaller scale than the previous figure, and composed of
several pieces or sections put together on a flat or even surface. Figure 3 shews a
perspective view of several of such pieces or sections put together and curved with a
convex curve having the radius or form given to same which it is required to give to the
glass to be bent or moulded, and Figure 4 is an end view of several of such pieces or
sections put together and curved with a concave curve having the radius or form
given to same which it is required to reproduce on the glass to be bent or moulded,
Figure 5 is a sectional view of several of such curved pieces or sections put together
and forming a concave mould, and Figure 6 shews several of such sections with a
curved piece at the end.
Similar letters of reference refer to like parts in all the Figures.
A is a piece or section made at one end with a feather or tongue B and at the other
with groove C. D D are angle irons to which the sections A are secured by rivets or
other convenient means, the flange of the angle iron may form the tongue B. E E
are blocks inserted as shewn at or near the end of the section opposite the angle iron
and secured thereto and to the corresponding plate below by rivets passing through
the three and thereby forming the groove C into which the tongue B fits. The block

page_text: pieces E are regulated in size according to the size of groove required to receive a
correspondingly sized tongue. The method I have described is a convenient way of
joining and connecting the pieces or sections but I in no way limit myself to the
special means described for connecting them together although I have found this
arrangement to answer well in practice and there is by the arrangement described,
provision made for the sections to adapt themselves to the curve required which latter
is obtained by the employment of a template made of the curve and form which it is
required the glass should assume. The sections which are curved when necessary, and
which may vary in width as required, are accordingly brought up to the form and are
then wedged to keep same in position and the surface thus formed is coated with
composition and as shewn at Figures 45 and 6. The mould is then ready to receive
the glass. The sections being arranged in the manner before described also allow for
contraction and expansion of the metal during firing and cooling and the edges of the
panes of glass are kept straighter and the curve more accurate than heretofore.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :
First In the manufacture of moulds for bending panes of glass, making them in
several sections or pieces and connecting same together so as to form a mould of the
curved or other shape required substantially as hereinbefore described with reference
to the accompanying drawings.
Second In moulds for bending glass forming same in sections and uniting them
by tongue or feather and groove substantially as described with reference to the
accompanying drawings.
BREWER & SON,
For the Applicant.