Improvements in Rims and Elastic Tyres for Vehicle Wheels.
Year: 1899

page_text: Date of Application, 9th Oct., 1899
Complete Specification Left, 9th July, 1900-Accepted, 1st Sept., 1900
PROVISIONAL SPECIFICATION.
Improvements in Rims and Elastic Tyres for Vehicle Wheels.
I, THOMAS GRANT, of 11, St. James Street, Brighton, in the County of Sussex.
Domestic Machinery Dealer and Cycle Manufacturer, do hereby declare the
nature of this invention to be as follows:-
This invention relates to rims of vehicle wheels made especially for solid or
cushion tyres, and elastic tyres made of indiarubber or its substitute.
By this invention the tyre is easily secured to the rim, with only a smail
portion of the tyre in the rim.
In order that my invention may be understood I append drawings in which
Fig. 1 is a part sectional elevation of rim with tyre fixed into same.
Fig. 2 is a section of the tyre.
Fig. 3 is a section of the rim.
Fig. 4 is a section of rim and tyre.
Figs. 5, 6 & 7 shows sections of different shapes the rims and tyres may be
made.
Referring to Figs. 3, 4 & 6 the same may be made hollow or solid.
The portion of tyres Figs. 2, 4, 5, 6 & 7 may be made with non-clastic
substance. To enable the tyre to be put into the rim a short portion of the
inside of rim is made a sufficient width for the portion of tyre to enter, the
tyre when put into same is drawn arround into the rim.
The tyre a and rim c may be made any contour desired.
Totod this 10th day of Navambar 1800
Improvements in Rims and Elastic Tyres for Vehicle Wheels.
I, THOMAS GRANT, of 11, St. James Street, Brighton, in the County of Sussex,
Cycle Dealer, 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 rims and tyres for vehicle wheels of that description
in which solid cushion or other similar tyres made of india rubber or other
suitable materials are employed. It consists in so forming the rim that a tyre
having a dove-tail shaped base or flange can be slid endways into position in.
which it is secured without the use of wires or other fastening devices.
An incidental advantage of my invention is that almost the whole of the tyre
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page_text: projects from the rim; thus a smaller weight of rubber is used than in ordinary
rubber tyres of the flanged type.
In order that my invention may be fully understood and ascertained I will now
proceed to describe it with reference to the drawings " left with the Provisional
Specification."
In these drawings:-
Fig. 1 is an elevation of part of a rim and tyre in position, one end being
shown in section.
Fig. 2 is a section of the tyre.
Fig. 3 is a section of the rim.
Figs. 4, 5, 6 and 7 show modified forms of rims and tyres.
It will be seen that the forms of both rims and tyres may be varied to suit
different cases, the rim necessarily having side channels, and the tyres side
flanges, dovetailed portions or the like which fit into the said channels.
a indicates the treading part of the tyre while indicates the base or that
portion which fits into the rim c.
d indicates the parts of the rims which form the channels.
In rims which are formed as shown in Figs. 3, 4 and 6 the parts & may be
formed solid instead of hollow as shown.
The tyres may be compound in which case the whole or part of the bases b
may be of rigid or slightly elastic materials. A convenient method of carrying
this into effect would be to vulcanise the base of the tyre much more than the
part a.
In any form of the rim a part of the inside of the rim is cut away leaving
a space of sufficient width to enable one end of the tyre which is made in lengths
to be inserted endwise into position: then the tyre is drawn around in the groove
of the rim until it forms a complete circle the two free ends of which butt
against each other.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A combined rim and elastic tyre for vehicle wheels in which the tyre is
formed with a dovetail shaped base or flanges which are broader than the neck
or narrowest part of the rim; and in which the neck of the rim is cut away at
one part so as to allow the flange or dovetail to be introduced therein and passed
round the wheel so as to form a complete circle, substantially as described and
shown.
2. In a rim and tyre for vehicle wheels the combination of a rim c having
parts d turned inwardly and a part of each cut away to form a broader opening,
a tyre a formed with a dovetailed or flanged base of such width that it can
be inserted into the opening in the rim substantially as shown and described.
3. In a rim and tyre for vehicle wheels the combination of the tyre a having
an extended base with the rim c having inwardly projecting flanges d and an
opening therein substantially as described.
13 4h Ninth T.... 1000
WILLIAM J. MUNDEN,
75, Chancery Lane, W.C., Agent for the Applicant.