Pyroxyline Compounds.
Year: 1888

page_text: Pyroxyline Compounds.
I, OLIVER IMRAY of No. 28 Southampton Buildings Chancery Lane in the County
of Middlesex Fellow of the Institute of Patent Agents do hereby declare the
nature of this invention and in what manner the same is to be performed to be par-
ticularly described and ascertained in and by the following statement :-
This invention relates to the manufacture of collars, cuffs shirt fronts and other
ornamental articles from celluloid cellonite or other pyroxyline compound, such
articles being imprinted with any desired pattern, such as wide or narrow stripes,
rings, dots, or any fanciful pattern, in imitation both as to design and color of the
linen or percale shirts collars and cuffs now extensively worn.
The purpose of my invention is to provide a simple method of producing celluloid
imitations of figured goods, which shall be permanent and durable in use, and free
from the objections hitherto experienced in the manufacture of this class of goods.
The accompanying drawings illustrate convenient means of practicing this invention.
Fig. 1 is a view in perspective shewing the manner of preparing the celluloid.
Fig. 2 is a plan view of the die and Fig. 3 a section of the sheets operated upon
by said die. Fig. 4 is a sectional view of the finished article produced by my
invention.
1 denotes a sheet of celluloid or other pyroxyline compound having a thickness of
about twenty thousandths of an inch and of white color. To this sheet is cemented
another sheet 2, having a thickness of about five thousandths of an inch and of any
desired color. 5 is a die preferably formed of steel. Upon the face which is cut in
relief the pattern to be formed, such as wide or narrow stripes, rings, dots,

page_text: anchors &c. ; the height of the relief is about six-thousandths of an inch, or a very
little more than the thickness of the upper sheet of celluloid. This die is placed upor
the upper or colored sheet of celluloid.
Upon the back of the die, a second sheet which is of zinc is laid and then two other
cemented sheets of celluloid prepared as described with second die and so on until the
press is full.
Heat is then applied until the temperature throughout is from 200° to 250° F
whereupon pressure is applied, and the sheets are then allowed to cool and are
removed from the press.
The portions of the upper sheet of celluloid acted upon by the die are thus
impressed into the body of the lower sheet and form, practically, an integral portion
thereof. The colored sheet is then scraped off leaving the surface of the lower sheet
nearly even, with the pattern appearing thereon as indicated in section by Fig. 4. A
number of these sheets are then placed between muslin or linen sheets and between zinc
plates and are again heated and subjected to pressure, whereby their surfaces are made
to present an exact imitation of the texture of the fabric placod upon them.
The zinc plates and dies or pattern plates should be of uniform thickness, and the
heat and prossure should be applied carefully but persons familiar with the treatment
of celluloid or like substances can have little difficulty in successfully practicing the
invention.
The sheets prepared as above described may be cut up into cuffs, collars, shirt fronts
and similar articlos.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The process herein set forth of manufacturing imitations of fancy figured goods by
cementing together two sheets of celluloid or other pyroxyline compound one of
which may be colored; heating and impressing the compound sheet with a die having
a pattern formed in relief, and scraping off or otherwise removing one of the sheets
from the other substantially as described.
Dated this 18th day of November 1888