A New and Improved Attachment for the Dust Caps of the Valves in Pneumatic Cycles.
Year: 1897

page_text: A New and Improved Attachment for the Dust Caps of the Valves
in Pneumatic Cycles.
I CHARLES HENRY MARRIOTT WHARTON of 25 Brazennose Street Manchester
Barrister at Law do hereby declare the nature of this invention to be as follows:-
In attaching the dust cap of the valve to the Cycle I use India rubber or similar:
elastic material (instead of the chain now generally used) in connection with the.
different methods of attachment hereinafter inentioned, First-I make an attachment
of rubber consisting of a short length of rubber with a loop at each end (for the dust
cap and screw cap respectively) stamped or moulded in one piece the loop for the
dust cap having a metal lining or being wrapped with wire to enable it to revolve
freely while screwing up the dust cap. In this method one end can be attached to a
spoke of the wheel. In another method I make a similar attachment to the last
mentioned of plain or tubular rubber but the loops are formed out of the length of
rubber and tied banded or similarly fastened instead of being stamped or moulded!
In another method 1 use an attachment of rubber tubing the loops made of wire
& attached by pushing the ends into the tubing the ends being twisted bent or
otherwise enlarged to prevent their easy return. In other methods I attach the
rubber to bands of metal round the caps or to a ring, hook or eyelet, soldered
screwed or otherwise fixed to the valve screw cap.
Dated this 26th day of June 1897.
A New and Improved Attachment for the Dust Caps of the Valves
in Pneumatic Cycles.
1 CHARLES HENRY MARRIOTT WHARTON of No. 25 Brazennose Street Manchester
Barrister at Law do hereby declare the nature of this invention and in what manner
5 the same is to be performed; to be particularly described and ascertained in and by
the following statement. :-
0
Hitherto the dust caps of Pneumatic Cycle valves have been mainly attached to"
one of the spokes of the wheel by means of a small link chain which as the wheel
turned round caused an objectionable clicking noise. I am aware that in the case of the
Lucas Valve the chain is permanently attached to a portion of the valve itself but
n

page_text: this does not prevent the noise before referred to and the chain in this case hinders
the process of screwing and unscrewing of the dust cap and other parts of the valve.
In the case of chains attached to the spoke of the wheel the chain and dust cap where
the latter is unscrewed often drops to the hub and is not only liable to hurt and dirty
the fingers in getting it up again but if left unscrewed by mistake might cause
serious mischief by entanglement with the wheel chain. My invention relates to a
method of attaching which obviates all these difficulties. It is perfectly silent. It
is not likely to get in the way during the act of pumping. The dust cap is always
close to but does not hinder the working of the valve. It may be easily detached and
can be applied with slight modifications to any existing valve which requires a dust
cap, and even if the cap is left unscrewed it cannot cause any mischief.
To accomplish these ends I use a length of India Rubber or similar elastic and
resilient material and of sufficient thickness or consistency to remain rigid unless bent
mechanically instead of the chain now used:
In one application I make a loop at each end the longer one to go round the screw
cap or upper portion of the valve and the other or smaller to go round the dust cap
itself. The loops may be formed out of a length of elastic material and fixed by
small bands of brass or other metal or rubber as in figure A or tied with wire or other
suitable material as in figure Bior the whole attachment may be stamped or moulded
in one piece as in figure C. The loop to go round the dust cap if not formed entirely
of wire as hereinafter mentioned, should have a metal lining as in figure D or he
.wrapped with wire as in figure E to enable the dust cap to revolve freely in the
process of screwing up.
In a second application I make or mould one loop only out of the material to go.
round the upper portion of the valve and in place of a loop of the material at the
other end I make or mould a small projection or thickening of the elastic material
olose to which I attach the dust cap by means of a piece of wire bent like the letter S
(a) figure F) sufficiently rigid as regards the elastic material to prevent it slipping
unless purposely moved but sufficiently loose as regards the dust cap to allow it to
revolve in the act of screwing on the valve. This wire forms the lower loop and is-
shown in figure F. The object of the projection or thickening is to prevent the wire
from slipping off in case of an accidental tug or stretching of the elastic material.
In a third application I use rubber tubing making the loops of wire aud attach
them by pushing the ends of the wire into the ends of the tubing having previously
twisted them to prevent their easy return. In figure G (a) shows the loop and 3
manner of twisting the ends for insertion in the tubing and G shews the attachment
complete.
In other applications (the dust cap itself being attached as before described)
instead of the large loop of elastic material shown in figures A to F I make a projection
or thickening (a) figure H and attach it to the upper portion of the valve by means of
wire twisted round the valve and the elastic material respectively or by means of
spring clips similar to those shown in figure J where the elastic material fits in the
bent part (a) and the part (b) fits or clips round the valve or by making the before
mentioned projection or thickening taper at the ends as in figure K it could be passed
through any eyelet soldered or otherwise attached to the valve screw cap or other 4
convenient point in the valve as shown in figure L besides being more easily passed
through the link on the dust cap. Figure M shows the attachment (heretofore
referred to as the second application and which I prefer to the others) fixed with the
dust cap screwed up on the valve. Figure N shows the same application but with
the dust cap unscrewed ready for pumping,
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
olaim is :-
An attachment.for the dust cap in valves of Pneumatic Cycles consisting instead

page_text: elastic and resilient material of the consistency described having two terminal con-
necting loops bands, clips or eyelets of the same material or of metal or of such
material and metal to connect the valve and dust cap respectively substantially as
and for the purposes herein set forth.