Improvements in Wheels.
Year: 1891

page_text: Date of Application, 25th Aug., 1891
Complete Specification Left, 23rd Mar., 1892-Accepted, 9th Apr.. 1892
PROVISIONAL SPECIFICATION.
Improvements in Wheels.
I JOSEPH CALLEN MUNRO, of 5 Keogh Road, Stratford, in the County of
Essex, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention for improvements in wheels has for its object to construct a wheel
which shall greatly reduce the noise and vibration usually caused in ordinary
working of wheels and consists essentially in connecting the tyre to the wheel sq
that it shall be free to move, against the resistance of springs, in the plane of the
wheel but cannot be displaced sideways.
In a wheel constructed according to this invention, the tyre is made of iron or
steel having a T-shape in cross section. The body of the wheel consists of two
pieces of angle iron, L-shaped in cross section, bolted or otherwise secured together
and to the spokes with distance pieces between them so that a groove is formed
completely round the felloes to receive the web of the tyre which is cut away near
the spokes so as not to interfere with motion in the plane of the wheel. Springs
are inserted under the head of the tyre on either side of the web and bear on the
head and on the angle irons and resist the motion in the plane of the wheel or two
rings of india-rubber may be placed on either side of the web and bear against the
tyre and angle iron for the same purpose.
Dated this 25th day of August 1891.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Wheels.
I JOSEPH CALLEN MUNRO, of 5, Keogh Road Stratford in the County of Essex
Engineer 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 for improvements in wheels has for its object to construct a wheel
which shall greatly reduce the noise and vibration usually caused in the ordinary
working of wheels, and consists essentially in connecting the tyre to the wheel so
that it shall be free to move against the resistance of springs in the plane of the
wheel but cannot be displaced sideways.
In a wheel constructed according to this invention, the tyre is made of iron or
steel having a T-shape in cross section. The body of the wheel rim consists of
two pieces of angled or flanged iron or steel L-shaped in cross section, bolted or
otherwise secured together and to the spokes with distance pieces between them,
so that a groove is formed completely round the felloes to receive the web of the
tyre which is cut away near the spokes so as to permit of a limited independent
movement in the plane of the wheel. Rings of india-rubber are placed on either
side of the web and bear against the tyre and angle iron rim and resist motion in
the plane of the wheel.
In the accompanying sheet of illustrative drawings:
Fig.
represents a side elevation, partly in section, of a wheel constructed
according to this invention and
Fig. 2 represents the same partly in cross section and partly in end elevation.
The rim of the wheel is formed of two angle-iron rings a secured together and
to the spokes b by rivets c and having tongues or teeth & between them so as to

page_text: form an open division space in which the web of the T iron tyre e works freely, and
between the rim a and the tyre are placed rings of elastic material f.
Notches are formed in the web of the tyre in which the tongues or teeth d
work loosely, so as to permit of a limited independent movement of the tyre
relatively to the rim when the elastic rings are compressed by the weight of the
vehicle, but which prevents any appreciable independent rotary movement of the
tyre and rim when the wheel is driven, or when a brake is applied to the tyre.
The spokes are tubular and formed with collars h, and are secured to the hub i
by means of screwed thimble sockets as is clearly shown.
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 employment of teeth or tongues secured to, or forming part of, the wheel
rim and engaging in notches in the tyre to prevent independent rotary movement
of the rim and tyre beyond a limited extent substantially as described.
2. In a wheel substantially as shown the tyre e of T cross-section, angle irou
rim a and elastic packing rings f, in combination with the teeth or tongues & working
in notches g for the purpose set forth.
3. A wheel arranged and constructed substantially as described with reference
to the drawings.
Dated this 23rd day of March 1892.
WHEATLEY & MACKENZIE,
40, Chancery Lane, W.C., Agents.