IMPROVE- MENTS IN THE MANUFACTURE OF FRAMES, AND IN TABLETS USED FOR ADVERTISING PURPOSES
Year: 1862

page_text: PROVISIONAL SPECIFICATION left by Alexander Forsyth at the Office
of the Commissioners of Patents, with his Petition, on the 31st January
1862.
I, ALEXANDER FORSYTH, of Glasgow, in the County of Lanark, North
Britain, Agent, do hereby declare the nature of the said Invention of "IMPROVE-
MENTS IN THE MANUFACTURE OF FRAMES, AND IN TABLETS USED FOR ADVERTISING
PURPOSES," to be as follows, that is to say:-
This Invention relates to an improved mode of manufacturing or producing
frames suitable for pictures, mirrors, shew cards, and other generally similar
purposes, and also advertising tablets.
Under one modification for producing frames, which are particularly suitable
for the display of show cards or trade announcements at railway stations or
other places where they are exposed to the weather, the frame is made of
cast iron, in which metal frames can be produced at a very cheap rate. The
metal is run into a suitable mould either plain or ornamented, and after
removal from the mould the frame may be coloured, gilded, or otherwise
ornamented, as desired. If preferred, steel or other suitable metal may be
used instead of iron, and portions of the surface or face of the frame polished
to contrast with the other parts, which may be decorated in a different manner,
the polished parts being protected from the influence of the weather by a
coating of transparent varnish. These frames may be either cast in one piece
or in parts to be afterwards put together. Instead of casting the frames they

page_text: may be stamped or struck out of sheet metal; several sizes of frames may be
produced from one sheet of metal, and the die may be engraved to produce
ornamental figures on the frames, either in relief or intaglio. For cheap
frames for advertizing purposes, it is preferred to make them of tinned iron,
and for other purposes sheet brass or copper may be used with advantage. In
this way the frames of looking-glasses, as also the pillars for toilet glasses may
be manufactured at a very moderate cost, at the same time having a highly
ornamental appearance. For some purposes it is preferred to mould the frame
in clay or other suitable plastic material, which may be afterwards ornamented
and glazed or otherwise finished. It is obvious that the process of gilding,
electrotyping, enamelling, laquering, and other decorative processes are
specially applicable to frames manufactured according to these improvements,
so as to suit any particular purpose for which they may be required.
In making advertising tablets, it is preferred to stamp them out of sheet
metal, or form them of clay or other suitable plastic material. The letters
or device being impressed in the surface of the material, and afterwards filled
in with varnish, colours, tinted clay, liquid glass, or other suitable material,
paper, millboard, or wood finely divided may also in some cases be advan-
tageously used for these impressed tablets, the letters or devices being filled up
with suitable colours. In this way these tablets may be produced at a cheap
rate; having a very ornamental appearance, and capable of withstanding the
effects of heat and moisture.