Improvements in Pneumatic Tyres and Wheels of Road Carriages, such as Broughams, Dog Carts, Bath Chairs and the like.
Year: 1894

page_text: Date of Application, 29th Mar., 1894
Complete Specification Left, 29th Dec., 1894-Accepted, 2nd Feb., 1895
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres and Wheels of Road Carriages,
such as Broughams, Dog Carts, Bath Chairs and the like.
We, JAMES IDDON, of Brookfield Iron Works, Engineer and Machine Maker,
and JAMES EDGAR BAXTER, Manager for the Leyland Rubber Company, Limited,
both of Leyland, near Preston, in the County of Lancaster, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in pneumatic tyres and wheels of road
carriages such as broughams, dog carts, bath chairs, and the like. In carrying out
the said invention we employ an inner air tube and an outer covering of the type
in common use for velocipedes the inner air tube being inflated in the usual way.
The edges of the outer covering are according to this invention held or nipped
between a double rim the outer portion of the said double rim being solid or in one
piece and having its face curved concavely whilst the inner portion of the rim is
made in separate lengths or "sections" and curved to correspond with the
curvature of the outer portion of the rim. In one arrangement the edges of the
inner rim-composed of separate pieces or sections as hereinbefore stated-are
turned under so as to form a projecting lip or collar and in another arrangement
the edges of the outer or solid rim are turned over upwardly to form similar lips or
collars. With the former arrangement the edges of the outer covering of the
tyre are thickened-preferably in the form of rectangular lips turned outwardly
and with the latter arrangement similar lips are turned inwardly-the lips on the
outer covering in both cases being held and prevented from being drawn out from
between the two portions of the rims by the lips or collars on the inner or outer portion
of the rim as the case may be. The lips on the outer covering are preferably
strengthened by being made in sections of hard and soft rubber alternately. The
wheel spokes are of stout metal wire and pass through the double rim the outer
extremities of the spokes having flattened heads and that part of each spoke which
passes through the rim being of somewhat larger diameter than the body part so as
to admit of being screw-threaded and receiving a nut which is screwed hard down
against the inner portion of the rim so as to draw the inner and outer portions of
the rim together and thereby to squeeze or firmly grasp and retain the edges of the
outer covering.
We find it desirable in some cases that the space within the inner air tube should
be partially occupied that is to say by an inner core of such a material for instance
as hard woven or plaited cotton or other textile material or india-rubber solid or
hollow the said cores being of any suitable cross-section and being designed to
permit of the tyre being available for use after being punctured that is to say to
prevent it from totally collapsing.
M
L 200
"

page_text: Improvements in Pneumatic Tyres and Wheels of Road Carriages,.
such as Broughams, Dog Carts, Bath Chairs and the like.
We, JAMES IDDON, of Brookfield Iron Works, Engineer and Machine Maker,
and JAMES EDGAR BAXTER, Manager for the Leyland Rubber Company, Limited,
both of Leyland, near Preston, in the County of Lancaster, 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 :-
This invention relates to improvements in pneumatic tyres and wheels of road
carriages such as broughams, dog carts, bath chairs, and the like. In carrying out
the said invention we employ an inner air tube and an outer covering of the type
in common use for velocipedes the inner air tube being inflated in the usual way.
Figs. 1 and 2 of the accompanying drawings are cross sectional views illustrating
the nature of our said invention.
The edges of the outer covering a are held or nipped between a double rim the
outer portion b of the said double rim being solid or in one piece or annulus and
having its face curved concavely whilst the inner portion c of the rim is made of
separate lengths or " sections "and curved to correspond with the curvature of the
outer portion b of the rim. In one arrangement (see Fig. 1) the edges of the inner
rim c-composed of separate pieces or sections as hereinbefore stated-are turned
under so as to form projecting lips c'e' and in another arrangement (see Fig. 2) the
edges of the outer or solid rim bare turned over upwardly to form lips bb. With
the former arrangement the edges of the outer covering a of the tyre are
thickened preferably in the form of rectangular lips a¹ a' turned outwardly and
with the latter arrangement having the lips a a² turned inwardly-the lips on the
outer covering a being held and prevented from being drawn out from between the
two portions of the rim by the lips on the inner or outer portion of the rim as
the case may be. The lips on the outer covering are preferably strengthened by
being made in sections of hard and soft rubber alternately. The wheel spokes d d
are of stout metal wire and pass through the double rim the outer extremities of the
spokes indicated by broken lines-and that part d' of each spoke which passes
through the rim being of somewhat larger diameter than the body part so as to
admit of being screw-threaded and receiving a nute which is screwed hard down
against the inuer portion c of the rim so as to draw the inner and outer portions c
and b of the rim together and thereby to squeeze or firmly grasp and retain the
edges of the outer covering a.
Where the ends of the several sections hh-preferably about four or five in
number--meet each other we cover or enclose the joint with a sheet metal protecting
sheath or shield such as i (see Fig. 3).
We find it desirable in some cases that the space f within the inner air tube g
should be partially occupied or filled up by an inner core of such a material for
instance as hard woven or plaited cotton or other textile material or india-rubber
(solid or hollow) the said cores being of any suitable cross section and being
designed to permit of the tyre being available for use after being punctured that is
to say to prevent it from totally collapsing.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The use or employment with the wheels of road carriages, such as broughams,
dog carts, bath chairs, and the like, of a pneumatic tyre constructed and arranged

page_text: in combination with the rims of said wheels substantially as described and shewn in
the drawings.
2. The combination with an inner inflatable air tube of an outer covering having
its edges thickened and being held or nipped between the inner and outer portions
of a rim in a double form substantially as described and shewn in the drawings.
اليوم
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1004
For the Applicants,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.