AN IMPROVED COMPOSITION TO BE USED AS A SUBSTITUTE FOR HARD INDIA RUBBER, CELLULOID, IVORY AND THE LIKE
Year: 1883

page_text: LETTERS PATENT to Alexander Melville Clark of the firm of A. M and
W. Clark of 53 Chancery Lane in the County of Middlesex Fellow of the
Institute of Patent Agents for an Invention of AN IMPROVED COMPOSITION
TO BE USED AS A SUBSTITUTE FOR HARD INDIA RUBBER, CELLULOID, IVORY
AND THE LIKE communicated to him from abroad by Stanislas Barbier and
Charles Henri Coiffier both of Paris, France
PROVISIONAL SPECIFICATION left by the said Alexander Melville Clark
at the Office of the Commissioners of Patents on the 26th January 1883.
ALEXANDER MELVILLE CLARK of the firm of A M and W. Clark of 53 Chancery
Lane in the County of Middlesex Fellow of the Institute of Patent Agents
AN IMPROVED COMPOSITION TO BE USED AS A SUBSTITUTE FOR HARD INDIA-
RUBBER CELLULOID IVORY AND THE LIKE" [communicated to him from abroad
by Stanislas Barbier and Charles Henri Coiffier both of Paris, France]
"
This Invention consists in a new composition or material which may be
employed with advantage as a substitute for hard indiarubber, celluloid, ivory and
other like substances in the manufacture of fancy goods and in all or most other
of their applications.
This new composition or material consists essentially of a mixture of ivory
waste or dust with born treated in any suitable manner but preferably agglutinated
by means of egg albumen.
In order to give the surface of the product a veined or marbled appearance the
ivory waste or dust is dyed with any suitable dye before being agglomerated with
the horn forming the body of the mass.
This new composition or material is susceptible of being moulded, carved, turned,
or otherwise worked by hand or in the lathe and is applicable for use in the

page_text: manufacture of fancy goods, toys boxes and the like and in various other branches
of industry. The surfaces of the articles so manufactured may be inlaid with any
vegetable or mineral substances.
This new composition or material may also be used with advantage in the
manufacture of emery wheels in lieu of the caoutchouc generally employed the
manufacture of said wheels being thereby rendered at once more simple and
economical.
Lastly this new composition possesses very high insulating properties is
susceptible of being cut or formed into very thin sheets and plates and it may
therefore be advantageously used in the construction of electric lamps dynamo
electric machines and other electric apparatus.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alexander Melville Clark in the Great Seal Patent Office on the
26th July 1883.
ALEXANDER MELVILLE CLARK of the firm of A. M. and W. Clark of 53 Chancery
Lane in the County of Middlesex, Fellow of the Institute of Patent Agents
"AN IMPROVED COMPOSITION TO BE USED AS A SUBSTITUTE FOR HARD INDIA-
RUBBER, CELLULOID, IVORY AND THE like A communication to me from abroad
by Stanislas Barbier and Charles Henri Coiffier, both of Paris, France,
"
This Invention consists in a new. composition or material which may be
employed with advantage as a substitute for hard indiarubber, celluloid, ivory,
and other like substances in the manufacture of fancy goods and in all or most
other of their applications.
This new composition consists essentially of a mixture of ivory waste or dust
with horn or horny material reduced to powder and treated in any suitable
manner but preferably agglutinated by means of egg-albumen. In order to give
the surface of the product a veined or marbled appearance, the ivory waste or dust
is dyed with any suitable dye before being agglomerated with the horn forming
the body of the mass.
This new composition or material is susceptible of being moulded, carved, turned,
or otherwise worked by hand or in the lathe and is applicable for use in the
manufacture of fancy goods toys and the like, and in various other branches of
industry. The surfaces of the articles so manufactured may be inlaid with any
vegetable or mineral substances
This new composition or material may also be used with advantage in the
manufacture of emery wheels in lieu of the caoutchouc generally employed, the
manufacture of said wheels being thereby rendered at once more simple and
economical.
Lastly this new composition possesses very high insulating properties and as it
is susceptible of being cut or formed into very thin sheets and plates, it may
therefore be advantageously used in the construction of electric lamps, dynamo
electric machines and other electric apparatus.
Having described the nature of the said Invention and the manner of performing
the same, I declare that what I claim as the Invention to be protected by the
hereinbefore in part recited Letters Patent is.
1 The manufacture of the new product consisting of an agglomerated mass of
ivory waste and horn or horny material reduced to a powdery condition and
rendered plastic by means of a suitable agglutinant-preferably egg-albumen-the
ivory waste being dyed before agglomeration when a veined or marbled appearance
is to be produced, substantially as specified.
2nd The application or employment of the new product for the manufacture of
fancy goods, toys, and the like, and also as a substitute for hard indiarubber for
insulating and other purposes as specified.
In Witness whereof I the said Alexander Melville Clark have hereunto set my
hand and seal this twenty third day of July A.D. 1883.