Improvements in and relating to Pneumatic Tyred Wheels.
Year: 1893

page_text: Date of Application, 4th Aug., 1893
Complete Specification Left, 3rd May, 1894-Accepted, 9th June, 1864
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyred Wheels.
We, WILLIAM YATES LAMBERT, of 254 Crookes Moor Road, Sheffield, in
the County of Yorks, and EDWIN LEADBEATER of the Firm of Leadbeater &
Scott, of St. Mary's Works, Penisfone Road, in the City and County aforesaid, do
hereby declare the nature of this invention to be as follows:-
Our invention relates to an improved method of attaching and securing the
covers of pueumatic tyres to wheel rims, and it consists in forming the cover of the
tyre of an arch-shape or approximate arch-shape in cross section, in forming on
the divided edges of the said cover beads or enlargements preferably made of hard
rubber or otherwise made rigid and inelastic, in forming in the wheel rim two
circumferential grooves adapted to receive the beads or enlargements on the edges
of the cover and in mounting on the outer face of the wheel rim on the centre part
between the two circumferential grooves a series of locking plates mounted on
studs passing through the rim and carrying discs or their equivalents on the inner
face of the rim, the said locking plates being so shaped that when turned to lie
transversely with the rim they engage with the beads or flanges on the edges of
the cover lying in the grooves in the wheel rim, and when turned-by means of the
discs or their equivalents on the inner face of the rim-to lie longitudinally with
the rim they are clear of the beads or enlargements on the edges of the cover,
which are then free to be removed from the wheel rim. The operating discs or
their equivalents may be turned by a key or other equivalent device and they
are so shaped or marked that they indicate the position of the locking plates within
the tyre.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic Tyred Wheels.
We, WILLIAM YATES LAMBERT of 254 Crookes Moor Road, Sheffield, in
the County of Yorks, and EDWIN LEADBEATER, of the Firm of Leadbeater &
Scott, of St. Mary's Works, Penistone Road, in the City and County aforesaid, 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 an improved method of attaching and securing the
covers of pneumatic tyres to wheel rims, and it consists in forming the cover of the
tyre of an arch-shape or approximately arch-shape in cross section, in forming on
the divided edges of the said cover beads or enlargements preferably made of hard
rubber or otherwise made rigid and inelastic, in forming in the wheel rim two
circumferential grooves adapted to receive the beads or enlargements on the edges
of the cover, and in mounting on the outer face of the wheel rim on the central part
between the two circumferential grooves a series of locking plates mounted on studs

page_text: passing radially through the rim and carrying discs or their equivalents on the
inner face of the rim, the said locking plates being so shaped that when turned to
lie transversely with the rim they engage with the beads or flanges on the edges of
the cover lying in the grooves in the wheel rim, and when turned-by means of the
discs or their equivalents on the inner face of the rim-to lie longitudinally with
the rim they are clear of the beads or enlargements in the edges of the cover which
are then free to be removed from the wheel rim, the object being to provide a more
simple and ready means of fixing and securing the covers of pueumatic tyres to
wheel rims.
We attain this end in the manner illustrated by the accompanying drawing, in
which-
Figure 1 is a view in transverse section of a pneumatic tyre and wheel rim
embodying our invention.
Figure 2 is a view in transverse section of a wheel rim showing one of the
locking plates turned to lie longitudinally with the wheel rim.
Figure 3 is a broken view in plan of the inner face of the wheel rim showing the
operating head of one of the studs carrying the locking plates.
Figure 4 is a broken view in plan of the inner face of the wheel rim showing the
operating head of one of the studs carrying the locking plates, and
Figures 5 and 6 are views in transverse section and plan respectively showing
another form our invention may assume.
Similar letters denote similar parts throughout the several views.
The cover A of the tyre is made of rubber reinforced with canvas in the well-
known manner and it has a bead or enlargement a formed on each edge. These
beads or enlargements are preferably made of a hard quality of rubber or they are
stiffened by the insertion of canvas or any other suitable unyielding material. The
air tube B is of the usual construction and is fitted with any suitable valve for
inflation and deflation. The wheel rim C-which may be either of the hollow or
solid type has a groove or channel e formed at each edge. In the wheel rim C
are radially mounted a series of studs D, D, etc. having either square heads d as
shown by Figures 1, 2, 3 and 4, or screw-driver button heads d as shown by
Figures 5 and 6 whereby they can be rotated.
On to the outer end of each of the studs D, on the outer face of the wheel rim C
is rivetted or otherwise attached a plate E which is preferably made of a
rectangular shape as shown in the accompanying drawing. These plates are of
such a length that when they lie transversely with respect to the rim they over-
hang the grooves or channels c, c, in the wheel rim and so confine the beads or
enlargements a, a, on the edges of the cover A therein as shown by Figure 1, but
when they are turned to lie longitudinally with respect to the rim as shown by
Figures 2 and 3 they are clear of the grooves or channels c, c, in the wheel rim
and thereby the cover of the tyre is free to be removed from the wheel rim.
The heads d of the studs D, are so shaped or marked that they denote the position
of the locking plates within the tyre.
As it is only necessary to detach one edge of the cover from the wheel rim to
get at the air tube, the locking plates E may be made to engage with one edge of
the cover only as shown by Figures 5 and 6 so that while one edge of the cover is
released from the wheel rim the other is still secured thereto in which case the said
plates are arranged to engage alternately with the edges of the cover.
We wish it to be particularly understood that we do not limit ourselves to the
precise details of construction hereinbefore described and illustrated by the
accompanying drawing, but that we hold ourselves at liberty to make such changes
and alterations as fairly fall within the spirit and scope of our invention.
We are aware that the covers of pneumatic tyres have already been made with
beads or enlargements on their edges, and also that wheel rims have been made
with grooves adapted to receive the said beaded or enlarged edges of the covers of
pneumatic tyres and we do not therefore claim such broadly.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
1. The hereinbefore described combination of parts forming an improved device
for attaching and securing the covers of pneumatic tyres to wheel rims.
2. In a pneumatic tyred wheel, a wheel rim having circumferential grooves or
channels at its edges in combination with a cover having beads or enlargements on
its edges adapted to fit in the grooves or channels in the wheel rim, and of locking
plates mounted on studs passing through the wheel rim so as to be capable of being
operated outside the tyre either to overhang the grooves or channels in the wheel
rim and so confine the beads or enlargements on the edges of the cover therein or
to be clear of the said grooves or channels to permit one or both edges of the cover
to be detached from the wheel rim, as set forth.
3. In a pneumatic tyred wheel, the combination of the rim C having circum-
ferential grooves or channels c, c, at its edges, and of radial studs D, D, etc. loosely
mounted in the wheel rim and carrying locking plates E, E, etc., as and for the
purpose set forth.
4. In a pneumatic tyred wheel, the combination of the rim C having circum-
ferential grooves or channels such as eat its edges, of studs such as D loosely
mounted in the wheel rim and carrying locking plates such as E, of a cover such
as A having beads or enlargements such as a on its edges, and of an air tube such
as B, all combined arranged and adapted to operate as and for the purpose set
forth.
1
1004
ROBERT E. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.