Improvements in Wheels for Vehicles.
Year: 1894

page_text: Date of Application, 29th Mar., 1894
Complete Specification Left, 25th Jan., 1895-Accepted, 2nd Mar., 1995
PROVISIONAL SPECIFICATION.
Improvements in Wheels for Vehicles.
WILLIAM STEPNEY RAWSON of 86 York Street Westminster Electrical
Engineer and JACOB BONN The Limes St. Stephens Road Hounslow London
Engineer do hereby declare the nature of this invention to be as follows:-
Our invention relates to an improved form of wheel which is designed to reduce
vibration and to secure other advantages. We dispense with the wooden felloe and
in its place we use a channel shaped metal tyre which is bent to the required circle
and the joint made by welding or brazing with suitable strengthening pieces. The
channel may be filled with rubber as in the ordinary method or it may be filled
with any substance such as creosoted wood, or "woodite" which shall tend to
deaden the sound. These substances may be forced into the channel and secured
by rivets, bolts or other means. In order to reduce vibration we interpose between
the spoke head & the inner rim of the channel an elastic pad which may be secured
in position by a metal cap attached to the spoke & by a pin or pins passing
through it & through the channel. These pins may be provided with another
rubber pad washer & nut within the channel so that the channel has a slight
movement between the two elastic cushions.
The wheel may be constructed in one of two methods.
The caps at the spoke head may be made in two parts with a dovetail or similar
joint so that the upper parts of the caps containing the rubber pad may be com-
pressed against the tyre till they can be dropped over the corresponding parts at
each spoke head after which the two parts of the caps are secured by screws or
rivets and the pins which pass through the tyre have then the rubber pads &
washers dropped over them & secured by nuts or otherwise. The channel may
then be filled with wood or other material or if it is filled before putting together,
spaces are left to allow of the insertion of the pads & washers such spaces being
afterwards filled in. Or we may make the caps in one piece without projecting
pins but provided with recesses into which the pins can be screwed through holes
in the tyre after the tyre is forced over the rubber pads.
The rubber pads washers & nuts are then put in position & the channel filled as
before.
EP
We, WILLIAM STEPNEY RAWSON, of 86 York Street, Westminster, Electrical
Engineer and JACOB BONN of The Limes, St. Stephens Road, Hounslow, London,
Engineer, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
Our invention relates to a construction of vehicle wheel especially designed to
reduce vibration as we shall describe referring to the accompanying drawings.

page_text: Fig. 1 is a transverse section and Fig. 2 is a part longitudinal section of the tyre
and fixing for a spoke of a wheel according to our invention;
Fig. 3 is a plan of the cover for the cap for the spoke.
Each spoke A is driven into a metal cap B which is cupped to receive a pad C
of india rubber or other similar elastic material, over which is fixed a metal
cover D. The tyre consists of an iron or steel bar E of channel section which is
bent to the circular form and has its ends united by welding or brazing, and it may
be with strengthening pieces. The hollow of the tyre is filled with material F of
a kind to deaden vibration and noise, it may be india rubber or compounds thereof,
or it may be creosoted wood, woodite and the like, secured to the tyre by cementing
or by pins or rivets. Where a spoke has to meet the tyre a hole is bored through
the tyre for a fixing screw G which, when screwed in its place has under it a metal
washer and below that an elastic washer g. There are also cut in the tyre two
grooves to receive beads H which project from the face of the cover D.
For putting the tyre and spokes together the screws G or temporary screws are
first screwed through the covers D into the central bosses of the caps B so as to
compress the pads C and force the covers D so far towards the caps B that the
beads H can enter the grooves of the tyre far enough to hold the covers D in
position. The screws are then withdrawn and the tyre is driven laterally along
the faces of the covers D to its proper central position relatively to the spokes,
whereupon the screw G with its washers is put in place, and the channel of the
tyre is filled up with the material F. Besides the central screw G, we sometimes
employ a pair of steady pins passing through the tyre into holes d provided in the
cover D, which may have studs such as d' projecting from its under side into the
pad C.
It will be seen that according to the construction above described the tyre
besides having a tread of material F such as deadens vibration and noise, is held to
the spokes between the elastic cushion C and the elastic washer g whereby a
farther deadening of vibration and noise is secured.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
A vehicle wheel having a tyre of channel iron or steel filled with deadening
material and secured by screws, having elastic wasbers under their heads, to caps
upon the spokes provided with elastic pads, substantially as and for the purpose
set forth.
Dated thin 02nd dow of Lonuarv 1805
ABEL & IMRAY,
Agents for the Applicants.