Improvements in or connected with the Valves of Pneumatic Tyres.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with the Valves of Pneumatic Tyres.
I, ARTHUR JAMES WILSON, of 8 Theobald's Road, W.C., in the County
of London, Advertisement Contractor, do hereby declare the nature of this invention
to be as follows:-
The invention relates to what is known as the dust caps of valves for pneumatic
tyres, and consists in so constructing and arranging the same that the chain usually
employed for connecting the dust cap to one of the wheel spokes and thus preventing
its loss is dispensed with, and the dust cap can be removed from the inlet orifice of
the valve nozzle without disconnecting it from said nozzle.
This may be effected in various ways; for instance, an internally screw threaded
tube or ring capable of screwing up and down on the valve nozzle, may be provided
with trunnions on which is mounted a piece of metal bent into U shape and capable
of being pressed against the inlet orifice of the valve nozzle by screwing up its
carrying tube or ring, or of being removed sideways therefrom by first slightly
unscrewing the said tube or ring and then turning the dust cap or cover somewhat
on its trunnions.
Another method of carrying the invention into effect is to combine a dust cap
with a spring which normally keeps the dust cap pressed against the inlet aperture
of the valve nozzle but which will permit the dust cap to be pulled away and
removed from the latter.
In any case the dust cap connection must, when removed from the valve nozzle,
leave a sufficient length of the latter exposed to enable the pump nozzle to be
screwed thereon.
Dated this 2nd day of December 1895.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with the Valves of Pneumatic Tyres.
I, ARTHUR JAMES WILSON, of 8 Theobald's Road, W.C. in the County
of London, Advertisement Contractor, 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 :-
The invention relates to what are known as the dust caps of valves for pneumatic
tyres and consists in so constructing and arranging the same that the chain, usually
employed for connecting the dust cap to one of the wheel spokes and thus preventing
its loss, is dispensed with and the dust cap can be removed from the inlet orifice of
the valve nozzle without disconnecting it from said nozzle.
I will describe my invention in connection with the accompanying drawings
in which various methods of carrying my invention into effect are represented, and
DQ71

page_text: in the various views of which like parts are indicated by similar letters of
reference.
a represents an ordinary pneumatic tyre valve, a' the nozzle thereof, and b the
dust cap or cover. Figures 1, 2 and 3 represent one method of carrying my
invention into effect Figures 1 and 2 being elevations of an entire pneumatic valve
and dust cap or cover drawn at right angles to each other with the dust cap
in position over the end of the nozzle and Fig. 3 being a similar elevation to Fig. 2
but showing the dust cap b removed from the end of the nozzle a¹. In this
arrangement an internally screw threaded tube or ring e capable of screwing up and
down on the valve nozzle a¹ is provided with trunnions c¹ on which are mounted the
arms of a Ushaped piece of metal whose curved end forms the dust cap or
cover b. Thus by screwing the tube or ring cup on the nozzle a¹ the dust cap or
may be pressed against the end of the nozzle a' whilst by screwing the tube
or ring e very slightly the reverse way the dust cap or cover b can be turned aside
and the nozzle a¹ thereby uncovered ready for connection with the air pump.
In the arrangement represented at Fig. 4 the dust cap or cover b is carried by the end
of a screw b² screwing through the cross head 63 connecting the arms b', the tube or
ring c in this instance being preferably a fixture on the valve. In this arrangement
the dust cap or cover b can be screwed firmly against the end of the nozzle a whilst
by screwing it slightly in the contrary direction it can then with the arms b¹ be
turned on the trunnions cl away from the end of the valve nozzle a¹.
cover
с
b
The arrangement represented at Fig. 5 is similar to that shown at Fig. 4, with
the exception, that in lieu of the dust cap or cover b being carried and operated by
a screw 62, it is carried by a plain spindle and is pressed towards the end of the
valve nozzle a by a spring 6, whilst it can be removed therefrom by pulling the
milled head of the spindle and then turned out of the way as before described.
In the arrangement represented at Fig. 6 I employ a dust cap or cover b having
arms & mounted on trunnions c' as in the arrangement represented at Figures 1.
2. 3 but instead of said trunnions being carried directly by a movable tube or
ring c, they are carried by rods c² passed through holes formed in lugs e fixed to a
fixed ring or tube c, springs 6 being interposed between the lugs c3 and the heads of
the rods to draw the dust cap or cover b to its seat on the end of the valve
nozzle a¹. By this arrangement the dust cap or cover b can be pulled away from
the end of the valve nozzle a¹ and turned aside to permit the air pump to be
connected with the valve nozzle, whilst when the air pump is removed from the
nozzle the dust cap or cover can be turned over the end of the nozzle, when
the springs will hold it firmly thereon.
Figures 7 and 8 are two elevations of another modified arrangement of dust cap
or cover showing the latter in two positions. In this form of my invention the dust
cap or cover b is carried by a single arm 67 passed through a hole formed in
a lug c carried by the tube or ring c. A spiral spring & placed between the head
of the arm b' and said lug c³, acts to draw the dust cap or cover b on to the end of
the valve nozzle a' when the parts are in the position shown at Fig. 7, whilst by
pulling the dust cap or cover b away from the end of the valve nozzle a¹ and
turning it round as shown at Fig. 8, the said nozzle is free to have the air pump
screwed thereon.
At Fig. 91 have represented the dust cap or cover 6 attached to the tube
or ring by two spiral springs 68, which act to draw the dust cap or cover bon to
'the end of the valve nozzle a¹, but which enable it to be readily removed
therefrom.
At Figures 10 and 11 I have shown the dust cap or cover attached to the tube
or ring by a flat spring, which enables the former to be readily applied to and
removed from the end of the valve nozzle a¹.
It will be evident that in all the various arrangements herein described, the dust
cap or cover bis secure against loss without the necessity for using a chain
as heretofore, and I would further remark that other modified arrangements may
be used without departing from the peculiar character of my invention.

page_text: 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 improvements in or connected with the valves of pneumatic tyres
substantially as herein shown and described.
2. The improvements in or connected with the dust caps of pneumatic tyre valves.
substantially as herein shown and described and for the purpose stated.
Dated July 2nd 1896.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.