Improvements in the Manufacture or Production of Sheets or Strips of Metal having a Gelatinous or other Plastic Backing.
Year: 1892

page_text: Date of Application, 22nd Jan., 1892-Accepted, 12th Mar., 1892
COMPLETE SPECIFICATION.
Improvements in the Manufacture or Production of Sheets or Strips
of Metal having a Gelatinous or other Plastic Backing.
I, ERNEST DE SOYE of 5 Rue Debelleyme Paris, in the Republic of France,
Chemist, 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:-
Owing to the hygrometric conditions of gelatinous, albuminous and gummy
substances or of starch glue, it has always been very difficult, if not impossible,
to produce gilt or silvered sheets of these substances of large surface without their
being imperfect, especially at those parts where paste or other suitable medium is
applied to cause the powder or sheet of gold, silver, platinum or the like to adhere.
The process forming the object of this invention is free from this drawback
and allows of large sheets of gold, silver or other suitable metal being applied on
a plastic backing without any fear of wrinkles or imperfections. The metal
becomes absolutely united with the supporting sheet.
I carry out my invention in the following manner-
I take a plate of glass, marble or any other suitable foundation, and, according
to the result which it is desired to obtain, I leave the plate plain, or 1 produce
thereon by means of engraving, moulding or the like, designs in intaglio or relief.
This plate I coat with metal by any of the ordinary processes such, for instance,
as by means of the bath or by the employment of sheets, either all over or only
at parts so as to leave places reserved thereon for receiving photographs, paintings
or printed matter or simply to remain vacant. The paintings or photographs
may be first formed on the glass with or without an opaque backing. On the
above mentioned plate, coated with metal or metal and photograph or painting
with or without backing, I pour a dilute solution of one or the other of the above
named substances, coloured, or otherwise, as may be required, and after a thorough
drying, the plastic substance becomes detached, carrying along with it the metal
and painting or photograph if used previously placed on the plate which served
as a support. By this method I obtain perfectly flawless sheets having a very
beautiful coating of metal and which have perfectly assumed the designs made
on the foundation.
My invention may be made use of in various ways for instance, in photography,
in binding, etcetera. These metal surfaced plates being used for the board covers
of books or as plates on which the photographic sensitive film can be formed
exposed and developed.
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-
The improvements in the manufacture or production of sheets or strips of metal
having a gelatinous or other plastic backing which consist essentially in first
coating with metal a suitable support-either plain or ornamented-and in spreading
thereon the layer of plastic substance, which, after being dried, may be removed
carrying with it the metallic sheet which adheres firmly thereto, all substantially
as hereinbefore described.
Dated this 21st day of January 1891.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.