AN IMPROVEMENT IN THE MODE OF APPLYING INDIA- RUBBER, GUTTA PERCHA, OR OTHER ELASTIC SUBSTANCES TO GIVE ELASTICITY BETWEEN THE TIRES OR OUTER RIMS AND THE HUBS OR NAVES OF RAILWAY OR OTHER WHEELS, AND BETWEEN OTHER METALLIC BODIES
Year: 1859

page_text: PROVISIONAL SPECIFICATION left by William Edward Newton at the
Office of the Commissioners of Patents, with his Petition, on the 15th
October 1859. A communication from abroad by Edward Crane, of
Dorchester, Norfolk, County of Massachusetts; in the United States of
America.
i
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane,
in the County of Middlesex, Civil Engineer, do hereby declare the nature
of the said Invention for "AN IMPROVEMENT IN THE MODE OF APPLYING INDIA-
RUBBER, GUTTA PERCHA, OR OTHER ELASTIC SUBSTANCES TO GIVE ELASTICITY BETWEEN
THE TIRES OR OUTER RIMS AND THE HUBS OR NAVES OF RAILWAY OR OTHER
WHEELS, AND BETWEEN OTHER METALLIC BODIES," to be as follows:-
This Invention relates to the application of a band or ring of india-rubber
or gutta percha between the tire or outer rim and the hub or nave of a wheel
made otherwise wholly or partly of iron, for the purpose of giving it elasticity.
It also relates to the employment of india-rubber or gutta percha between
other metallic bodies to obtain elasticity, or resist the effects of concussion;
and it consists in taking india-rubber or gutta percha, which has been prepared
for vulcanization by mixing with it the metallic substances commonly employed
for the purpose, and while it is in the plastic state, and so introducing it into
the space prepared or provided for it between the parts of the wheel, or
between the other bodies where it is to be used, and subjecting it to the heat
necessary to complete the vulcanization while in its place, by which means it

page_text: may be made to secure the parts of the wheel or the metallic bodies between
which it is applied in the proper relation to each other. The hub and inner
rim of the wheel are united by arms, or by a plate or plates and these parts
may consist of a single casting, or be constructed of two or more pieces, and
suitably secured together. The tire or outer rim is made separate, and the
outer circumference of the inner rim is made sufficiently smaller than the
inner circumference of the tire to receive between them the india-rubber or other
elastic substance, and the outer peripherical surface of the inner rim and inner
surface of the tire or outer rim are grooved circumferentially or diagonally in
opposite directions in the inner rim, or otherwise grooved, indented, or
roughened. Before placing the tire or outer rim outside of the inner rim or
body of the wheel, the outer peripherical surface of the latter and inner
peripherical surface of the former are spread over with the plastic india-rubber
to fill the grooves or depressions in their surfaces; and after the tire or outer
rim has been put on and suitably adjusted and supported relatively to the inner
rim or body, the space between them is filled and closely caulked with the
india-rubber or other elastic substance, after which, plates are temporarily
applied to the sides of the wheel to confine the india-rubber, and the whole is
put into the oven or heater to complete the vulcanization of the india-rubber.
When this has been done, the side plates are removed, and the india-rubber
locks the tire on the wheel as securely as if it had been shrunk on by
heating and cooling. In applying india-rubber or gutta percha between other
bodies, the plastic prepared material is introduced while the bodies are held in
proper relation to each other in the same way as it is applied between the
parts of the wheel, and it is in the same manner subjected to heat while in its
place, in order to complete its vulcanization.