Improvement in Pneumatic Tyres, and Rims for same.
Year: 1894

page_text: Date of Application, 26th Feb., 1894
Complete Specification Left, 26th Nov., 1894-Accepted, 26th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvement in Pneumatic Tyres, and Rims for same.
JAMES ANDREW 94 Amiens Street Dublin, Ireland, Cycle Engineer do hereby
declare the nature of this invention to be as follows:-
My invention is an improved form of hollow steel tubular or shell rim for
pneumatic tyres. Its novelty consists of slots or cuts made through the upper
leaf running parallel with the circle or felloe to receive catches attached to
outer cover or envelope, and when said catches are all in position the outer
cover or tyre is perfectly secure but can with care be detached for repairing
purposes.
Said catches may be made of delta metal brass or any other suitable
material.
Dated this 26th day of February 1894.
Improvement in Pneumatic Tyres, and Rims for same.
JAMES ANDREW 14 Gayfield Street Glasgow, Scotland, Cycle Engineer late
of 9 Amiens Street Dublin, Ireland, 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 reference to an improved form of rim for pneumatic tyres
provided with longitudinal slots or cuts made through the upper leaf or part,
parallel with the circle or felloe, for receiving catches attached to the outer cover
or envelope. The arrangement is such that when said catches are all in position
the outer cover or tyre is perfectly secure, although, at the same time, being
capable of ready detachment for repairing purposes.
The catches may be made of delta metal, brass or other suitable material.
And in order that my said invention may be properly understood I have hereunto
appended an explanatory sheet of drawings, whereon,
Fig. 1 is a perspective sectional view of a rim and tyre as constructed in accordance
with my invention.
Fig. 2 is an outside view and Fig. 3 a section of part of the cover 6 Fig. 1.
Fig. 4 is an outside view of part of the cover b.
Fig. 5 is a perspective sectional view of the rim a Fig. 1.
Fig. 6 is a perspective sectional view of a modified rim.
Fig. 7 is a longitudinal section of the rim Fig. 6 on the line a-x.
Figs. 8 and 9 are views of rivets.
Referring to the drawings it will be seen that the rim a Figs. 1 and 5 is made
hollow and with doubled or creased parts or edges a¹, a' in which slits a³ are cut
on the inside at suitable intervals apart right round the rim. The cover b has
bent metal catches c secured to its outer edges at intervals apart corresponding to
the distances apart of the slots a³ in the rim. These catches are preferably secured
to the canvass edges of the cover b by means of rivets d passed right through and
[Price 8d1

page_text: flattened out on the inside. Plates or pieces of metal e may, if desired, be inserted,
on the inside of the cover, between the flattened shanks of the rivets and the
material of the cover.
If desired eyelets the same or similar to those used in boots may be employed
instead of the rivets d. Such an eyelet is shown in side view at Fig. 8 and
as rivetted in place in Fig. 9 where the dotted lines represent the material of the
cover.
g (Fig. 1) is the air tube and a strip of canvass or tape for preventing the
inside surfaces of the rivets d abraiding the air tube.
With this arrangement when it is desired to fit the cover in place all that is
necessary is to insert the bent ends of the catches c in the slots as as at Fig. 1.
The inflation of the air tube g causes the catches to grip tightly into the slots in
the rim and hold the cover securely in place.
When the air tube is deflated the cover can be readily removed by merely
disengaging the catches from the slots.
Figs. 6 and 7 show a simple form of rim with bent over edges or
beads a¹, a².
•
My invention is applicable to all forms of rim wherein slots a³ can be
easily made.
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
consider novel and desire to claim is :-
1. In combination a rim having longitudinal slots in it at suitable intervals apart
and a cover having catches on its edges at corresponding intervals apart, said
catches being adapted to lock into the slots in the rim, substantially as hereinbefore
set forth.
Dated this 24th day of November 1894.