Improvements in Wheels for Trollies and other Vehicles.
Year: 1888

page_text: Date of Application, 17th Dec., 1888
Complete Specification Left, 17th Sept., 1889-Accepted, 19th Oct.. 1889
PROVISIONAL SPECIFICATION.
Improvements in Wheels for Trollies and other Vehicles.
1. ALFRED GEORGE SPENCER of 77 Cannon Street, in the City of London, Engineer
do hereby declare the nature of this invention to be as follows:-
This invention has reference to an improved construction of wheels for trollies and
other vehicles in which an india rubber tyre is interposed between the rim of the
wheel and an outer tyre of metal, the object being to relieve shocks and deaden
sounds, whilst at the same time protecting the elastic tyre from injury and rapid
wear. The rim of the wheel is formed according to one arrangement partly by
outwardly turned portions or flanges of a couple of retaining rings which are secured
to the wheel centre by bolts and nuts or other suitable means, the arrangement being
such as to form a channelled periphery or annular bed to receive the inner circum-
ference of the india rubber tyre which may either be made of a shallow U or V form
in cross section or may be caused to assume that form when secured in place with the
outer metal tyre around it, a projection at the inner circumference of the metal
tyre fitting into the depression at the outer circumference of the india rubber tyre.
The retaining rings clasp the india rubbor tyre at each side, thus putting a
compression thereon and keeping both the india rubber and the motal tyres in
place.
The construction above described may be modified.
Dated this 17th day of December 1800
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Wheels for Trollies and other Vehicles.
1, ALFRED GEORGE SPENCER, of 77 Cannon Street, in the City of London, 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 has reference to an improved construction of wheels for trollies and
other vehicles of the well known kind in which an india rubber tyre is interposed
between the rim of the wheel and an outer tyre of metal, the object being to relieve
shocks and deaden sounds whilst at the same time protecting the elastic tyre from
injury and rapid wear. The rim of the wheel is formed according to one arrangement
partly by outwardly turned portions or flanges of a couple of retaining rings which are
secured to the wheel centre by bolts and nuts or other suitable means, the arrangement
being such as to form a channelled periphery or annular bed to receive the inner
circumference of the india rubber tyre which may either be made of a shallow
U or V form in cross section or may be caused to assume that form when secured
in place with the outer metal tyre around it, a projection at the inner circumference
of the metal tyre fitting into the depression at the outer circumference of the india
rubber tyre.

page_text: The retaining rings clasp the india rubber tyre at each side, thus putting a
compression thereon and keeping both the india rubber and the metal tyres in
place.
The construction above described may be modified as hereinafter specified.
In the accompanying sheet of illustrative drawings :-
Fig. 1 is a central vertical section of a wheel constructed according to this
invention and
Fig. 2 is a side elevation of one half of such a wheel with the bolts 6 and nuts
removed.
1 is a wheel centre, 2 an outer metal tyre and 3 an india rubber tyre. This tyre
3 is interposed between the metal tyre 2 and the rim of the wheel which in the
example shown is formed by the lateral flangos 4, 4 of two retaining rings 5 5
that are secured to the wheel centre by bolts 6 and nuts. The peripheries of the
flanges are so formed that when the rings 5 are fastened in place on the wheel
centro there is formed a channelled periphery or annular bed of a shallow
approximately U or V form as seen in cross section the curvature of the flanges
being such that the flanges force the indiarubber tyre 3 against the inner periphery
of the metal tyre 2 which is made internally of curved form with its contral portion 7
projecting inward and adapted to fit the depression in the outer circumference of the
india rubber tyre 3. The tyre 3 may as herein before mentioned be made with a
cross section as shown in Fig. 1 or the tyre may be a plain ring and have the form
shown imparted thereto by pressure of the flanges 4.
The retaining rings 5 are provided with shoulders at 5" 5" that rest upon the
periphery of the wheel centre. These shoulders facilitate the fitting of the retaining
rings to the wheel centre and the securing in place of the india-rubber tyre 3.
In lieu of two removable retaining rings, one of the flanges may be made in
one with the wheel centre. Or both flanges 4 may be made solid with the wheel
centre which in this caso can be made in two similar circular halves or parts
adapted to meet in a plane at right angles to the axis of the wheel and to be bolted
or otherwise secured together.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that I do not claim
generally the making of elastic wheels but what I claim is :-
My improved wheel with interposed india-rubber tyre as described and shewn.
Dated this 17th day of September 1889.
Dated this 17th day of September 1889.
ALFRED G. SPENCER.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.