Improvements in Tyres for Wheeled Vehicles and in Appliances connected therewith.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Tyres for Wheeled Vehicles and in Appliances
connected therewith.
I, ENOCH SILTBERG of No. 12, Spurriergate, in the City of York, Watchmaker
and Jeweller 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 :-
My invention relates to certain improvements in tyres for wheeled vehicles and
in appliances connected therewith, and has for its objects the construction of a
pneumatic tyre which forms an efficient air cushion, and is not liable to derange-
ment by external puncture or by friction by contact with the metallic tyre, and also
the total disablement of the vehicle by puncture of said pneumatic tyre is obviated
by the use of an auxiliary resilient tyre, which is readily brought into use in cases
of emergency.
In order that my invention may be the better understood, I have appended the
accompanying sheet of drawings, in which
Figure 1 represents a transverse section of the improved tyres, and
Figure 2 an elevation of a portion of the wheel of a vehicle to which the same is
adapted.
Figure 3 is a sectional view of a valve for retaining the internal pressure within
the pneumatic tubular tyre, and also allowing it to be inflated when required.
Figure 4 is a view of a clip for more perfectly sealing the inflating tube.
In carrying my invention into effect, I employ a metal wheel tyre F, Figure 1
constructed so as to present an inner channel with two curved edges inside the
wheel. The exterior surface of said tyre is grooved for the reception of an elastic
cushion E which is shaped so as to fit said groove, and overlap the outer edges of
the metal tyre on each side. A tubular pneumatic tyre D is placed round the
wheel, and is protected from abrasion by the cushion E, which interposes between
it and the metal tyre F. An outer envelope A, made of any suitable material and
formed so as to fit round the tube D, is provided with a number of hooks or clips C,
Figures 1 and 2, that engage with the projecting inner edges of the metal tyre F
and firmly retain the envelope A in position. Said envelope A is made so as to
present an increased thickness exteriorly for the better protection of the inner
tubular tyre D, and is sufficiently elastic to allow of the hooks C being sprung into
position upon the metal tyre F. Any number of hooks C may be used, as may be
necessary to hold the envelope A in position. A canvas or similar lining B
preserves the tube D from external abrasion, and the edges of the cushion E
similarly preserve it from contact with the outer edges of F.
When in use, the construction of the outer envelope A renders it extremely
durable, but in the event of injury, said envelope may be readily removed, and the
pneumatic tube D used alone. If said tube D fails by reason of puncture or other
cause, it also may be removed and the weight of traction carried by the elastic
cushion E.
Thus the advantages of a pneumatic tyre may be obtained without risk of the
total disablement of the vehicle, and with increased effectiveness and durability, a
wheel so fitted, is according to my invention, provided with three elastic tyres,
capable of being used together, or separately as hereinbefore described.
In attaching the tube I to the hollow tyre D, Figure 3, I form an internal
projection G, which is covered by a thin elastic strip H. When the tube I is
attached to the pump or other device for inflating the tube D, the elastic strip H is
forced away from the projecting edge of G by the incoming air or fluid, and retains
the internal pressure by closing the orifice when the action of pumping or equivalent

page_text: has ceased. As an additional security against leakage I may use the hinged clip J,
Figures 2 and 4 which may be tightly closed around the tube by means of the
screw K, thus effectually sealing it.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,
First. The construction and use of a detachable outer envelope A in combination
with a tubular tyre D, cushion E and curved metal tyre of a vehicle wheel F,
substantially as herein described with reference to the drawings.
Second. The construction and use of an elastic cushion E with overlapping edges.
in combination with a hollow or tubular tyre D, and with or without an outer
envelope A substantially as and for the purposes herein described, with reference
to the drawings.
Third. The construction and use of a curved metal tyre F of a vehicle wheel, in
combination with an envelope A and hooks or clips C substantially as herein
described and shewn by the appended drawings.
Fourth. The construction and use of the retaining valve GH and clip J substan-
tially as and for the purposes herein described with reference to Figures 2, 3 and 4
of the appended drawings.
Dated this 3rd day of September 1891.
Dated this 3rd day of September 1891.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.