Improvements in and relating to Pneumatic Tyres and Wheel Rims therefor.
Year: 1898

page_text: Date of Application, 6th Apr., 1898-Accepted, 4th June, 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic Tyres and Wheel Rims
therefor.
We, HENRY TAYLOR and STEPHEN TAYLOR, trading together as Taylor Brothers,
at 28, Rhodes Road, Mile End, London, E., Cycle Manufacturers, and WILLIAM
MCINTYRE, of "The Regent," Coutts Road, Burdett Road, Bow, London, E.,
Licensed Victualler, 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:—
Our invention relates to pneumatic tyres and wheel rims therefor, and consists,
Firstly of an improved construction of wheel rim adapted for a cycle or other spider
wheel, or as a tyre or rim for coach, cart, cab and other road vehicle-wheels, of
which the spokes and felloes are of wood, and Secondly, of an improved method
of constructing the outer cover or envelope of a pneumatic tyre, and means for
mounting the same and its air chamber or tube upon the said rim.
Our invention is designed with the object of providing a tyre and rim capable
of being quickly and easily connected to and removed from each other when
desired, but which cannot be separated spontaneously by blowing off or wrenching
off when in use, while the general construction of the said tyre and rim provides,
that notwithstanding the said tyre may become punctured the wheel upon which
it is mounted may still be ridden or used to the end of the journey, as the said tyre
does not depend upon inflation for its retention upon the said rim.
In order that our said invention, its general construction and manner of use
may be fully understood, we have hereunto appended a sheet of drawings, of
which,
Fig. 1 is a cross sectional of a tyre and rim according to our invention, as they
would appear when the said tyre is being fixed upon the rim, or removed or partly
removed therefrom to effect repairs or renewal.
Fig. 2 is a like section when the said tyre is fixed in position upon the rim and
inflated.
Fig. 3 is a longitudinal section of Fig. 2 upon the line A. B, illustrating its
application to a cycle or other spider wheel.
Fig. 4 is a cross sectional view of so much of Fig. 2 as will serve to illustrate
its application to an ordinary vehicle wheel having spokes and felloes of wood.
Fig. 5 is an enlarged view of an improved form of bolt and nut employed in
connection with Fig. 4, and which also forms part of our invention, as hereinafter
explained.
In carying our invention into effect, we construct of iron, steel, or other suitable
metal, a wheel rim A, the cross sectional shape or configuration of which would be
substantially that shewn, its dimensions and weight being dependent upon its
intended use for a light or spider or cycle wheel, or carriage or cart wheel, an
essential feature of the said rim being that its lowest dip or concavity is of
rectangular formation in cross section.
Our pneumatic tyre is provided with the usual form or type of air-bag or tube B,

page_text: the outer cover or envelope of which C, is made of vulcanized rubber or rubber
composition, and extended in thickness or substance at the wearing portion or tread
of the wheel in the usual way but according to our invention the usual lining of
canvas or other material D, is prolonged in width so as to extend the dimensions
from edge to edge of the said cover, the said edges being finally cemented around 5
or otherwise arranged to enclose, enwrap, or hold two endless strips E and F, of
leather, vulcanite, wood, highly vulcanized rubber, or other semi-resilient material,
these being each of preferably rectangular formation in cross section, and of
such dimensions as to be seated comfortably in the angles of the rectangular dip
of the tyre A, and be therein retained by a metallic plate G, which may be in one
piece of sufficient length, or composed of any number of short lengths
or sections, preferably the latter, the said plate. or sections of plate
having each a suitable number of holes or slots through each of which is
passed a bolt H, which after passing through corresponding holes or slots J, in the
rim A each receive a nut or nuts K, the tightening of which said nuts would cause
the strip or strips G, to press down tightly upon and hold the extended edges E
and F of the cover C firmly within and upon the rim A, and in order that the
bolts H may not rotate during the tightening of the said nuts, we construct the
heads of the said bolts square or polygonal in plan, and with parallel or tapered
edges, the holes or slots in the said strips G being of suitable formation for
receiving the said heads.
In Figs. 1, 2 and 3 it is assumed that our invention is applied to a cycle or other
spider wheel, in which case the said bolts may be arranged to occur in any suitable
way between the spokes L of the wheel as at Fig. 3, while a suitable hole (not
shewn) would be provided in one or the other of the said strips G for the passage of
any suitable type of valve for charging the air bag or chamber B.
In fixing the tyre upon the rim A, the edge E of the cover C would be first
placed in position beneath one edge of the strips G, when the air-bag or tube B
may be placed and fixed resting upon the said plates as at Fig. 1, and before
inflating the said bag or tube the second edge F of the cover would be placed under
the opposite edge of the plates G and the nuts K be screwed home, when both
edges E and I would be thus firmly fixed and retained upon the rim A, the whole when
the bag B is fully inflated appearing substantially as at Fig. 2, the said inflation
of B serving to drive itself and the edges of the cover C closely into the internal
formation of the rim A as shewn at Fig. 2, and so long as no rupture occurs to the
canvas or the like D it would be impossible to blow the tyre off the rim by over-
charging, and it would be equally impossible for the tyre to leave the rim, notwith-
standing that the tyre may become deflated by puncture, thus providing that the
wheel may still be ridden although deflated.
In adapting our invention for vehicle wheels having wooden felloes as at Fig. 4,
we may find it convenient to form the rim A of such dimensions as to be strong
enought to be heated and shrunk upon the felloes M in the usual way, or when
the said vehicle wheels already have a metallic tyre shrunk thereon, the rim A
may be arranged to fit outside such a metallic tyre, but in either case the usual bolt
holes in the folloes M may be employed for receiving the bolts necessary for fixing
the said rim and strips G. Such an arrangement is shewn in Fig. 4, but for the
purposes of this adaption of our invention we prefer to construct a bolt such as N
(Fig. 5) having a square head O, the holes in the plates G being formed to receive
the same, and in order to obtain a good firm grip upon each of the said bolts, we
construct a nut P having an internally threaded tubular extention R, the holes S
in the felloes M being extended in diameter at their inner ends to receive the said
extensions R, when these are screwed upon the bolts N as shewn Fig. 4, such
screwing home of R P serving to retain the tyre cover C upon the rim A in the
manner previously described, and the rim -A upon the felloes M, or the metallic
tyre of the said felloes.
In either of the foregoing means for fixing the tyre upon the rim A, the mere
releasing of the bolts H or N, as the case may, be would release the plates G,

page_text: sufficiently to permit one side of these to be raised for releasing one or the other
or both of the edges E or F of the cover, as shewn in Fig. 1, thus permitting
access to the bag or tube B or the entire removal of this and the cover C if
desired.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1st. The improved metallic rim adapted to form a rim for a spider, cycle or other
wheel, or and form a shrunk-on rim, or capable of being fixed upon a shrunk on
rim of a carriage, cart, or other road vehicle wheel, the said improved metallic rim
being adapted to receive a pneumatic tyre, provided with means other than that
of inflation for fixing the same upon the said rim, substantially as herein set forth
and shewn.
2nd. The cover or envelope. for a pneumatic tyre with means for fixing the said
cover upon the improved shrunk-on or other rim set forth in the preceding claim
substantially as herein described and shewn.
3rd. In an improved pneumatic tyre and rim therefor for cycles and other spider
wheels, the combination of a-rim such as A, with air bag or chamber B and cover
or envelope C, the latter having swollen, enclosed and otherwise extended edges
such as E and F, adapted to be seated within the said rim A, and be there
retained by the means of a plate or plates G, resting upon and grasping the said
extensions E and F, by the means of bolts and nuts such as HK, passing
through G and the rim A, with means for inflating the said chamber B
substantially as herein described and shewn by Figa 1, 2 and 3 of the appended
drawings.
4th. In an improved pneumatic tyre and rim therefor for the wheels of carts,
cabs, carriages and other road vehicle-wheels, having wooden felloes, the combina-
tion of a rim such as A shrunk upon the felloe's M, or mounted upon an ordinary
metallic rim shrank upon M, the said rim A carrying an air chamber or bag B,
and cover or envelope C, the latter having swollen, enclosed, or otherwise extended
edges such as E and F adapted to be seated within the rim A, and be therein
retained by a plate or plates G, resting upon and grasping the said extensions E
and F by the means of bolts such as N passing through the said plates, the rim A
and the felloes M, and receiving nuts such as R, P, substantially as herein
described and shewn by Figs. 1, 4 and 5 of the appended drawings
5th. In combination the improved bolt N having a square or polygonal head O,
and nut such as P, having a tubular extension R, adapted to screw upon N,
substantially as and for the purposes, herein described and shewn, more particularly
by Fig. 5 of the drawings.
.
1 1000
GEO. THOS. HYDE,
1, Broad Street Buildings, London, E.C., Agent for the Applicants.