Improvements in and relating to Wheels for Cycles and other Road. Vehicles.
Year: 1890

page_text: This print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c. Act, 1883) as allowed by
the decision of the Law Officer of the 24th day of May 1898.
Date of Application, 28th Nov., 1890
Complete Specification Left, 12th Aug., 1891-Accepted, 26th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in and relating to Wheels for Cycles and other Road.
Vehicles.
I, JAMES RICHARD TRIGWELL, of 146, Brixton Hill, Brixton, in the County of
Surrey, Cycle Manufacturer, do hereby declare the nature of this invention to he
as follows:-
My invention relates to an improved rim and tyre for the wheels of velocipedes
and other road vehicles.
The rim is made out of one or more pieces of sheet steel or other suitable
metal, and it may be made either hollow or solid. The cross section of the tyre
when finished resembles a letter Y, the small projecting flanges on the underside of
the rim being adapted to receive the spokes and thus enable them to be removed
and replaced without disturbing the tyre in the rim. The small flanges on the
upper part of the rim are either shaped to form small U-shaped channels round the
edges of the rim, or they are bent upwards to form vertical flanges according to
the means I adopt to fix the tyre in position.
The tyre consists of a combination of an inner cushion and an outer cover or
tread, this latter consists of an arch-shaped ring of rubber preferably thicker at
the top than at the sides, and having a sheet of canvas, or wire gauze, moulded in
it. The inner cushion may be either an air-inflated tube or a cellular rubber ring,
the cells taking the form of a series of transverse holes arranged to give the most
active cushioning effect.
When a rim with the U-shaped flanges is used the ends of the arch-shaped cover
or tread are made in the form of an enlarged bead and it is fixed to the rim either
by turning over the edges of the flanges so as to grip the beads on the said cover
or tread, or a wire is run through each bead and drawn up taut by any suitable
device, when the cover or tread is in place on the rim.
When a rim with the vertical flanges is used, I shape the inner sides of the arch-
shaped cover or tread to fit the said flanges, and I attach them to the said flanges
by transverse screws and ring washers adapted to grip the ends of the arch-shaped
cover or tread, the top edges of both the flanges of the rim and of the ring washers
being suitably shaped to prevent the cover or tread being cut under compression.
Dated this 28th day of November 1890.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Court Chambers, 70-72, Chancery Lane, London, W.C.,
Agent for the Applicant.

page_text: Improvements in and relating to Wheels for Cycles and other Road
Vehicles.
I, JAMES RICHARD TRIGWELL, of 146, Brixton Hill, Brixton, in the County of
Surrey, Cycle 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 relates to an improved rim and tyre for the wheels of velocipedes
and other road vehicles.
The rim is made out of one or more pieces of sheet steel or other suitable metal,
and it may be made either solid or hollow. The cross section of the rim which I
prefer to use resembles a letter Y, the stalk being adapted to receive the spokes
and thus enable them to be removed and replaced without disturbing the tire. The
small flanges on the upper part of the rim are shaped to form small longitudinal
U-shaped channels on the edges of the rim.
The tyre which may be of the pneumatic or cushion type has an outer cover or
tread preferably arch-shaped in cross section and thicker at the top than at the
sides. With this outer cover or tread is incorporated a lining of wire gauze or
equivalent material, to afford greater protection from puncturing.
The edges of the arch-shaped cover or tread are made in the form of enlarged
beads, and the said edges are fixed in the channels on the edges of the rim by
passing a cord or band through or over each bead, the said cord or band being
adapted to be drawn up taut by any suitable device.
In order that my invention may be fully understood I will more particularly
describe it making reference to the accompanying drawing in which the figures are
views in transverse section of various forms my invention may assume, similar
parts being marked with like letters of reference.
Referring to Figure 1 of the accompanying drawing. A designates the rim
which in this case is shown as a solid one, a designates the radial stalk adapted to
receive the spokes of the wheel, and a¹, a¹, the two channels formed on the edge
of the rim. B designates the outer cover or tread, and C the lining of wire
gauze which in this case is shown on the inner face of the cover or tread.
b, b, designate the beads formed on the edges of the cover or tread B and adapted
to fit in the channels a¹, a¹.
The cover or tread B is fixed to the rim A by means of bands or cords D, D,
either passing through the beads b, b, as shown by Figure 2 of the accompanying
drawing, or over them as shown by Figure 3 of the accompanying drawing, or by
a band or cord passing through one bead and the other band or cord passing over the
other bead as shown by Figure 4. The bands or cords D, D, are drawn up taut
to fix the outer cover or tread by a right and left handed running nut, or by any
other equivalent device.
The heads b, b, and channels a¹, a¹, may be of any other suitable section than
circular as shown, and they may be wholly outside the walls of the cover or tread B
as shown by Figures 1 and 3, wholly inside them as shown by Figure 4, or partially
inside and partially outside them as shown by Figure 2 of the accompanying
drawing.
Figures 2, 3, and 4, illustrate various constructions of the rim A.
In Figures 2 and 4 the lining C of wire gauze, or its equivalent, is shown
incorporated in the thickness of the outer cover or tread.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction herein before described and shown by the figures of the

page_text: accompanying drawing, but that I hold myself at liberty to make such changes
and alterations as fairly fall within the spirit and scope of my invention.
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:
1st. The improvements in wheels for velocipedes and other road vehicles, as and
for the purpose hereinbefore set forth.
2nd. In a wheel for a velocipede and other road vehicles having a hollow tyre,
fixing the outer cover or tread of the said tyre to the rim of the wheel, and
strengthening it, in the manner hereinbefore set forth.
3rd. In a wheel having a hollow tyre, the combination of an outer cover or tread,
arch-shaped in cross section, having a lining of wire gauze or its equivalent on its
inner face or incorporated in its thickness, and having beads or their equivalents
formed on its edges; of a rim having longitudinal channels on its edges adapted to
receive the said beads; and of two bands or cords contained within the said beads
and adapted to bind them into the channel on the rim, as set forth.
4th. In a wheel having a hollow tyre, the combination of an outer cover or tread,
arch-shaped in cross section, having a lining of wire gauze or its equivalent on its
inner face or incorporated in its thickness, and having beads or their equivalents
formed on its edges; of a rim having longitudinal channels on its edges adapted to
receive the said beads and of two bands or cords engaging with the said beads
or their equivalents and holding and confining them in the chanels on the rim, as
set forth.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70-72, Chancery Lane, London, W.C., Agent for the Applicant.