Improvements in and relating to Pneumatic Tyres and Wheel Rims therefor.
Year: 1893

page_text: Date of Application, 17th June, 1893
Complete Specification Left, 17th Mar., 1894-Accepted, 5th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyres and Wheel Rims
therefor.
I, WILLIAM YATES LAMBERT, of 254 Crookes Moor Sheffield, in the County
of Yorks, do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved method of attaching and fixing the covers
of pneumatic tyres to wheel rims, and it has for its object the attachment of the
covers to the wheel rims in a more simple and efficient manner than at present
obtains.
According to my invention I mount in the rim a series of spring fingers passing
through the inner face of the rim and adapted to engage with eyelet holes or their
equivalents in the edges of the cover. These spring fingers may be either of the
double or single type-preferably the former-and they are so constructed that
they are kept up to the rim by the springs controlling them and they have to be
pulled out from the rim to enable their engaging portions to engage with the holes
The fingers and springs may if desired be enclosed in tubes placed
in the cover.
within the rim.
Deted this 17th day of June 1893.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic Tyres and Wheel Rims
therefor.
I, WILLIAM YATES LAMBERT, of 254 Crookes Moor Road, Sheffield, in the
County of Yorks, 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 method of attaching and securing the covers
of pneumatic tyres to wheel rims, and it consists in forming the cover with divided
edges along each of which is formed a series of holes, and in mounting in the rim
a series of spring catches adapted to engage with the holes in the edges of the
cover, and so secure it to the wheel rim, the object being to attach and secure the
cover to the wheel rim in a thoroughly secure manner, and yet provide for its ready
removal without the use of tools.
I attain this end in
which
the manner shown by the accompanying drawing in
Figure 1 is a view in transverse section of a pneumatic tyre and wheel rim
embodying my invention,
Figure 2 is a broken view in side elevation of the tyre and wheel rim, and
Figure 3 is a broken view in plan thereof.
Figure 4 is a view in transverse section of a pneumatic tyre and wheel rim
showing another form my invention may assume, and
Figure 5 is a broken view in plan thereof.
Throughout the views similar parts are marked with like letters of reference.

page_text: The cover A of the tyre is formed of rabber reinforced with canvas in the well-
known manner, and it has formed along its edges a series of holes a, a, etc.
preferably reinforced with metallic eyelets and spaced at equal distances apart.
The air tube B is of the usual construction and it is fitted with any suitable form of
valve for inflation and deflation. The rim of the wheel C is made hollow and is
preferably of the section as shown; i.e. with a flat outer surface, to provide
sufficient space within the rim for mounting the spring catches. The spring
catches D each consists of a shank d having a cross piece formed at one end
carrying two fingers d', d', as shown by Figures 1, 2 and 3 adapted to engage with
the holes a, a, in the edges of the cover A. The shank d of the spring catch
passes through a hole in the inner face of the rim and small holes c, c, are provided
for the ends of the fingers d, d, to pass through. Around the shank d of the spring
catch is mounted a spiral spring E which is confined thereon to keep the fingers
carried by the said shank engaged with the holes a, a, etc. in the cover A by a
washer d fixed to the end of the shank d.
As a modification, instead of making each spring catch carry two fingers d'as
shown by Figures 1, 2 and 3 of the accompanying drawing, they may carry but one
such finger as shown by Figures 4 and 5 of the accompanying drawing, in which
case the said spring catches are spaced nearer apart. To protect the controlling
springs E they may be enclosed in light metallic tubes F, as shown by Figure 4 of
the accompanying drawing.
To detach the cover the spring catches are pulled inwards towards the centre of
the wheel until the finger or fingers carried by them are disengaged from the holes
in the edges of the cover, when the said cover is free to be removed from the wheel
rim. The catches may if desired be turned round at right angles to their operative
positions as shown by dotted lines in Figure 3.
It will be obvious that if the puncture can be located the cover of the tyre need
..only be detached from the rim at or about the point of puncture.
I wish it to be particularly understood that do not limit myself to the precise
details of construction hereinbefore described and illustrated by the 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 :-
1. The respective combination of parts forming my improved device for securing
the covers of pneumatic tyres to wheel rims, substantially as herein before described
and illustrated by the accompanying drawing.
2. In a pneumatic tyred wheel, the combination of a wheel rim having a series
of spring catches mounted in it and adapted to act on its inner face, of a divided
cover having a series of holes in its edges for the fingers of the spring catches to
-engage with, and of an air tube for inflating the tyre, as set forth.
Dated this 17th day of March 1894.
ROBERT E. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.