Year: 1888

page_text: Date of Application, 9th Apr.. 1888
Complete Specification Left, 27th Dec., 1888
Complete Specification Accepted, 5th Feb., 1889

page_text: COMPLETE SPECIFICATION.
An Improved Plastic Composition for Moulding and other Purposes.
I, FRÉDÉRIO BEER, of No. 147, Avenue de Villiers, Paris in the French Republic,
Sculptor, 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 consists in an improved composition of matter which, being
employed in a plastic state for moulding and other purposes, sets into a solid mass
presenting the appearance and many of the general properties of marble or stone.
In the execution of my Invention, I employ the following ingredients :
Pulverised marble
Pulverised glass
Pulverised quick-lime
say 100 parts
say 25 "
say 2 to 3 "
which, when about to be used, are thoroughly mixed together and incorporated with
a solution of Silicate of Soda or Potash at about 600 (Baumé) to the consistency
of a thin paste such as is usually employed in plaster of Paris moulding and with or
without the addition of pigments.
The composition thus produced may be run into moulds or slabs of any desired
description, or otherwise used as may be required, and sets as above stated into a
compact mass closely resembling marble or stone.
The Quicklime of the above formula may, when so desired, he replaced by Slaked
lime, the proportions in this case being increased, and ranging in practice between
5 and 10 parts, according to the quality, and to the rapidity of setting required in
the final product.
In certain cases, the pulverised glass may be replaced by powdered Flint, Brick,
Terra Cotta or Sand, but for general purposes, 1 give preference to the glass.
The Silicate of Soda or Potash may also be replaced by other Alkaline Silicates,
but in most cases these two, and especially the former, give the best results.
The sparkling appearance of certain descriptions of Marble may be imparted to
casts made from my composition by incorporation with the ingredients thereof of
from to 2 to 4 parts of Mica more or less finely pulverised according to the effect
to be produced.
When Gelatine moulds are used for casting, they should be lubrified by preference
with a mixture of say 3 parts Petroleum to 1 part of Vaseline.
For casting in sectional moulds of plaster or other resistant material, which should
be rendered non-absorbent by any known means, the composition may be kneaded to
the consistency of dough, and pressed into the mould in the same manner as for
reproductions in clay.

page_text: On withdrawal from the mould, the casts should be wrapped in towels, and kept
in sawdust in a cool room, until thoroughly hardened, when they acquire the aspect
and general properties of marble, of which the different descriptions may he imitated
either by varying the proportions of the ingredients of the composition, or by adding
thereto appropriate pigments and mica as above indicated.
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 [
claim is:
An improved Composition of matter for moulding and other purposes, obtained by
the incorporation with an alkaline Silicate (preferably the Silicate of Potash or of
Soda) of powdered Marble, Glass and Lime (or of powdered Marble, Flint, Brick or
Terra Cotta and Lime) with or without addition of Pigments and Mica, substantially
as and for the purposes herein set forth.
PHILIP M. JUSTICE,
Associate Agent.