Improvements in connection with Valves for Pneumatic Tyres.
Year: 1897

page_text: Date of Application, 19th June, 1897
Conplete Specification Left, 23rd Feb., 1898-Accepted, 26th Mar.,
1898
PROVISIONAL SPECIFICATION.
Improvements in connection with Valves for Pneumatic Tyres.
I, CHARLES THOMAS BROCK SANGSTER, Works Manager to the Cycle Components
Manufacturing Company Limited, of Bournbrook, near the City of Birmingham,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the dust cap attachments for the valves of pneumatic
tyres.
Heretofore the attachment ends of such caps have been connected to the wheel
spokes, which besides being objectionable by reason of rattling, wears away the
enamel from the spokes, which are then liable to become rusted and to break at
the point of wear.
According to my invention I swivelly connect the chain at one end to the cap
and at the other end to the stalk of the valve by means of an eared plate or washer
coming between the lock nut screwed on the body of the valve and the underside of
the rim, that is to say, the inner end of chain is connected to an eye of a washer
plate (or equivalent) with its middle part pierced to the cross section of the valve
stem, and when in position comes between the rim of the wheel and the lock nut
valve; whilst the other end of chain is connected to the swivelling end of the dust
cap.
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1
T 1007
CHARLES THOMAS BROCK SANGSTER.
By Henry Skerrett, Agent for Applicant.
Improvements in connection with Valves for Pneumatic Tyres.
I, CHARLES THOMAS BROCK SANGSTER, Works Manager to the Cycle Components
Manufacturing Company Limited, of Bournbrook, near the City of Birmingham,
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 the dust-cap attachments for the valves of pneumatic
tyres.
Heretofore the attachment ends of the chains provided in connection with such
caps for the purpose of preventing the same being lost have been connected to the
wheel spokes, which besides being objectionable by reason of rattling, wears away
the enamel from the spokes, which are then liable to become rusted and to break at
the point of wear.

page_text: According to my invention I swivelly connect one end of the chain to the cap,
whilst the other end is secured to the stalk of the valve by means of an eared plate
or washer coming between the lock nut screwed on the body of the valve and the
underside of the rim.
Figure 1 of the accompanying drawing represents an elevation of a pneumatic
tyre valve, provided with a dust-cap chain attachment according to my invention.
Figure 2 is a like elevation as Figure 1, but with the dust cap removed from the
tail end of the valve, its loss being then prevented by the chain.
Figure 3 represents a separate view of the said chain, one end of which carries
the dust cap, whilst the other end carries the washer encircling the valve body.
Figure 4 is a section of the valve body immediately above the washer, which is
shown in plan.
Figure 5 is a section and Figure 6 a plan of the washer, which is prevented from
rotating around the valve by the central hole in the same being of the same shape
as the cross section of the valve body.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
a is a pneumatic tyre valve, the body part a¹, of which is screwed to receive the
nuts a³, a³, by which it is secured to a wheel rim, and the coupling or union a¹,
connecting the valve tail end as, to the aforesaid body, whilst a is a flat or facet
made along the whole length of one side of the said body which is thus somewhat of a
D-shape in cross section throughout its length. Screwing on the tail end a³, is a
dust cap b, whose loss, when unscrewed is prevented by a chain c, one end e¹ of which
is swivelly connected to the said cap, whilst the other end c³, is engaged with the
pierced ear d¹, of a washer d, having a central piercing d³, of a D figure or of a
shape corresponding to the cross section of the valve body a¹, over which the said
washer is placed, and preferably comes, when in position, between the nut a³, and
the wheel rim.
By thus connecting the dust-cap-securing chain to the valve through the medium
of a non-rotating washer threaded over the valve stem and having the said chain
attached to it, rattling is prevented and the enamel on the wheel spokes is not
destroyed.
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:-
First In the valves of pneumatic tyres, connecting the dust-cap chain to the
valve through the medium of a washer, disc, or plate, threaded over the valve body,
and to which one end of the said chain is attached.
Secondly-In the valves of pneumatic tyres, connecting the dust-cap chain to
the valve through the medium of a D-pierced or other non-rotating washer or
equivalent, threaded over the valve body, the cross section of which corresponds to
the shape of the piercing in the washer, to which an end of the said chain is
attached, substantially as described and set forth.
Dated this 22nd day of February 1898.
CHARLES THOMAS BROCK SANGSTER.
By Henry, Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.