A New or Improved Means of Securing Pneumatic and like Tyres to the Rims of Wheels.
Year: 1893

page_text: Date of Application, 26th July, 1893
Complete Specification Left, 26th Apr., 1894-Accepted, 9th June, 1894
PROVISIONAL SPECIFICATION.
A New or Improved Means of Securing Pneumatic and like Tyres
to the Rims of Wheels.
I, PRESTON DAVIES, of Town Mead Works, Wandsworth Bridge Road, Fulham,
in the County of Middlesex, Tyre Manufacturer, do hereby declare the nature of
this invention to be as follows:-
The object of this invention is to provide a secure means of attaching and a
ready means of detaching the outer casing or jacket of an inflatable tyre to and
from the rim of a wheel.
According to my invention the outer casing or jacket is held in the trough of
the rim, which may be of any suitable section, by means of a wire or equivalent
rope inserted in each edge of such jacket. The wires on each side are of a sufficient
length to have overlapping ends for the purpose of permitting circumferential
variation as in the Specification of Letters Patent granted to me and numbered 16,973
of 1891.
One end of each of the wires or ropes is detachably secured to the rim in a
suitable manner. The other end of the same wire carries a suitable metallic end-
piece or plug provided with a screw-thread. The rim has attached to it in a
suitable position a metallic piece through which a hole is bored of a sufficient size
A roller is
to clear the thread of the end-piece or plug hereinbefore referred to.
placed at the base of this metallic piece for the wire or rope to run over.
end-piece or plug is passed through the opening and the wire or rope is maintained
taut independently of inflation by an internally screw-threaded cap or nut.
end-piece or plug is prevented from turning when engaged with the cap or nut
by having a key way or flat or equivalent device.
Dated this 26th day of July 1893.
The
The
A. F. SPOONER,
124, Chancery Lane, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
A New or Improved Means of Securing Pneumatic and like Tyres
to the Rims of Wheels.
I, PRESTON DAVIES, of Townmead Works, Wandsworth Bridge Road, Fulham,
in the County of Middlesex, Tyre Manufacturer, 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 has for its object to provide a secure means of attaching and a
ready means of detaching the outer casing or jacket of an inflatable tyre to and
from the rim of a wheel.
I attain this object by the mechanism illustrated in the accompanying drawings,
in which
Figure 1 is a cross-sectional view of a tyre and rim of a velocipede wheel;
Figure 2 is a longitudinal view of part of a similar wheel;
Figure 3 is a longitudinal view, mainly in section, of the securing mechanism ;
Figure 4 is a plan thereof; and
Figure 5 is a detail in the construction.

page_text: Referring to the drawings, A is the rim of a wheel of any suitable trough-
shaped section and which may be either hollow or solid; a velocipede wheel is
shown but I do not limit the application of my invention thereto. B is the inflatable
tube; C is the usual outer casing or tread of rubber or its equivalent; D is the
restraining medium of canvas or the like, preferably formed in one with the
tread C and having a channel d at each of its edges. E represents the spokes
of the wheel.
According to my invention I fix at a suitable point in the centre of the trough
of the rim a metallic plate F (shown in plan in Figure 5) provided with a key-
shaped slot f. At a convenient distance from the plate F I fix on the rim a
turret-piece G passing it through an opening in the rim and, when a hollow
rim is used, it may conveniently be soldered or brazed thereto; when a solid
rim is used it may be secured by the collar g and nut h shown in Figure 3. The
stem of the turret-piece is lip-shaped at one end and adapted to lie in the trough
of the rim and the lip is provided with a sloping groove or channel 1. The other
end m of the stem k is D shaped in cross-section.
The outer casing or jacket is held in the trough of the rim by means of a wire
or equivalent rope n loosely inserted in each of the channels d of the restraining
medium D. This wire or equivalent rope n encircles the wheel rim being of a
sufficient length to have overlapping ends, serving to strengthen the tyre and
permit of circumferential variation without breach of continuity as in the Speci-
fication of Letters Patent granted to me No. 16,973 dated October 6th, 1891.
One end of the wire or rope n is knotted or provided with an enlargement
permitting of its passing through the circular end of the slot in the plate F
f
and being held thereunder when drawn along the slot. The other end of such
wire or rope is passed through the central opening p' of the disconnected plug-
piece p (see Figures 3 and 4) and its extremity enlarged or knotted. This
plug-piece p screw-threaded externally and is fitted to pass loosely through
the stem k being prevented from turning by the "flat" on its side as shown in
Figure 4. A cap or stem extension k¹ of the turret-piece G is screw-threaded
internally and is provided at one end with the hexagonal enlargement and milled-
edged flange k² as shown.
"
Each wire or rope n may be as herein described, or alternatively one of such
wires may be permanently or otherwise secured to the rim or its ends attached
to one another. When each of the said wires or ropes are detachably secured
as herein described, two turret-pieces G and plates F are provided one pair being
for each wire or rope and the same may be conveniently located in the wheel rim
with respect to each other and the inflation valve.
The plug-piece p engages with the stem-extension ¹ which, upon being turned
operates to take up the slack of the wire or equivalent rope and to firmly secure
the tyre to the wheel rim.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, with the rim of a wheel and an inflatable tyre, of the
turret-piece G, comprising the stem k, its extension A, a screw-threaded plug-
piece p extending into the bore of the stem k and extension k', a rope or wire
detachably secured at one end to the rim and attached to the tyre and at its other
end secured to the plug-piece p, and means for adjusting the plug-piece to tighten
and loosen the rope.
2. The combination, with the rim of a wheel and a detachable tyre, of the turret-
piece G having the adjustable plug p and provided with means for adjusting the
plug, a rope or wire n secured to such adjustable plug at one end and at the other
end extending through a slot in the rim of the wheel and also connected with the
tyre substantially as set forth.
3. The combination, with an inflatable tube B having a restraining medium D

page_text: 5
and a tread C, of the wires or ropes n passing loosely through channels d at
the edges of the outer casing or jacket and passing through slots f by which
they are detachably secured to the rim and also secured to adjustable plug-
pieces p carried by turret-pieces & secured to the rim substantially as set forth.
Dated this 26th day of April 1894.
A. F. SPOONER,
124, Chancery Lane, W.C., Agent for the Applicant.