THE IMPROVEMENT IN PROCESS FOR MANUFACTURING ORNAMENTAL MOLDINGS OF CARTON-PIERRE OR OTHER SIMILAR PLASTIC SUBSTANCE."
Year: 1880

page_text: "
PROVISIONAL SPECIFICATION left by Paul Bedeau at the Office of the
Commissioners of Patents on the 11th December 1880.
PAUL BEDEAU, Civil Engineer, of 26, Rue Garnier, at Paris-Neuilly, France.
THE IMPROVEMENT IN PROCESS FOR MANUFACTURING ORNAMENTAL MOLDINGS OF
CARTON-PIERRE OR OTHER SIMILAR PLASTIC SUBSTANCE."
My Invention relates to processes whereby ornamented mouldings in carton-
pierre or other similar materials are formed through a machine by circular or
nearly circular molding dies, and consists in the employment in conjunction
with the machine of, first, dies in the shape of rings or segments made of
an electro-deposited metal film strengthened by a backing of some suitable
material as active or working medium, and, second, carton-pierre or other plastic
material, with or without a backing of cotton, linen, hemp, or any other suitable
kind of cloth, as the material to be wrought into an ornamented moulding.
The machine is represented in the accompanying Drawings, in which Figures 1
and 2 are longitudinal elevations; Fig. 1 representing a machine with circular
moulding die, and Fig. 2, one with segmental moulding die; Fig. 3 is an end view
of Fig. 2 enlarged, and Fig. 4 is a central transverse section of Fig. 3.
The circular drum A, Figure 1, or the sector a, Figures 2, 3, and 4, carrying the
moulding die composed of the galvano-plastic metal film o, Fig. 4; backing of plaster
or soft matal m, and wood backing k rotates together with a cog-wheel and its
shaft in bearings in the uprights of frame F.
The teeth of the wheel gear in those of a rack fastened to the carriage B, and
motion is communicated to these parts by a small pinion fastened to the shaft of
crank E.
Carriage B moves on rollers D and drum C, and carries on its upper surface the
counter-mold i with the plastic substance g and a device h for regulating the
height of the counter-mould by two superposed series of inclined planes.
The projecting part of the counter-mould on each side must bear tight against
the cheeks j,j, Figure 3, of the moulding-die, so that none of the plastic substance
can escape laterally.
In carrying out my Invention I produce by electro-deposition, preferably of
copper, an intaglio moulding, which if not directly obtained in circular shape I
bend to the proper radius, and which I provide with a backing of plaster or soft
metal, and, if necessary, an additional backing of hard wood in such a manner that
the moulding thus strengthened shall be of uniform and even thickness. This part I

page_text: designate in this Specification with the name of "moulding-die," and if in the
shape of a ring fit it to circular drum A, Figure 1, or if in the shape of a segment
to a sector a, Fig. 2.
The carton-pierre or other plastic material g, Figure 3, I place in the shape of a
band of the proper width on a properly shaped counter-mould, which is a moulding
somewhat roughly shaped so as to leave the manufactured moulding of a perceptibly
even thickness throughout its length. This counter mould has been previously
fastened to the upper surface of carriage B, and regulated to the proper height by
inclined planes h.
All parts of the plastic material dusted over with a powder to prevent adherence
are then brought by the simultaneous motion of carriage B and drum A or section a
successively under the developing circumference of the moulding-die, which thus
transfers its intaglio imprint to the plastic material, and produces the exact cameo
counterpart in the shape of an ornamented moulding.
I am well aware that this my process of manufacturing ornamented mouldings
may be worked by machines of various forms and designs, I therefore do not confine
myself to this particular machine.
What I claim as my Invention is,-
The process of manufacturing ornamented mouldings of carton-pierre or other
plastic materials, with or without a backing of cloth, by means of circular or nearly
circular shaped moulding-dies of electro-deposited metal strengthened by a backing
when the same is used in a machine, the whole substantially as described and for
the purpose set forth.