Improvements in Rubber Tyres and Rims or Felloes for Wheels of Velocipedes and other Light Carriages.
Year: 1890

page_text: The decision of the Comptroller-General, of the 31st day of January 1893,
allowed, under Section 18 of the Patents, &c. Act, 1883, an Amendment
of this Specification.
Date of Application, 8th Dec., 1890
Complete Specification Left, 8th Sept., 1891-Accepted, 8th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Rubber Tyres and Rims or Felloes for Wheels of
Velocipedes and other Light Carriages.
I, WILLIAM GOLDING, of 4 Portman Street, Moss Side, Manchester, Manu-
facturer do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in rubber tyres in which elasticity and
buoyancy are obtained by means of a tubular reservoir of compressed air contained
in the tyre. It has for its object, in addition to simplicity and effectiveness and
economy of production and material, the avoidance of such serious defects as exist
in present compressed air tyres. These consist principally in the. shape of the tyre
and rim, and the methods of fixing them together. In constructing this class of
tyre it is of importance that the bulk of the air reservoir should be outside the
outermost edge of the rim of the wheel. When so constructed there is great
difficulty in properly securing the tyre to the rim. The only effective method up
to the present for doing so is by fixing bands of canvas to the tyre and passing them
over the rim, after making holes for the spokes, and then cementing, sewing, or
lacing the edges of the canvas bands together. This method though successful in
holding the tyre and rim together in the proper position has serious defects. It is
expensive and complicated, requiring special apparatus for effecting it, and does not
afford the tyre sufficient lateral support. The consequence is that the tyre is
unstable laterally and causes the rider and machine to slip sideways on wet & muddy
roads. The other method in use is to form the tyre cylindrical in shape with a
cylindrical hole through it longitudinally, in which is placed, at the time the tyre is
moulded, a cylindrical tube of canvas to withstand the air pressure. The tyre is
then cemented or otherwise fastened in the usual semicircular or U shaped rim.
The defects of this system are, that the air reservoir is situated half or more than
half within the outer edge of the rim so that, unless undue pressure of air is used,
or the diameter of the tyre and rim are very large, the edge of the rim comes near
the ground under the pressure of the weight of the rider and machine. It thus
receives the shocks of obstacles instead of the tyre; the latter is also pressed
between the edge of the rim and the ground and is cut by it. The tyre is also
liable to be pulled out and cause accidents. Tyres of large diameters are also
difficult to put on without straining them, as the canvas lining having very little
elasticity and as the tyres are moulded ring shaped, they have necessarily to be
stretched over the outer edges of the rim.
This invention relates, firstly to improved construction of the tyre and rim and
the method of securely holding them together. Secondly, to particular details of
the tyre and to improved processes for making it. Thirdly to an improved valve
and inlet pipe. Fourthly to an improved plug and means for fixing in and with-
drawing the same from the orifice of the inlet pipe to keep out dirt. And fifthly to
an improved hollow rim for use with the tyre.”