Improvements in and relating to Valves for Pneumatio Tyres.
Year: 1893

page_text: Date of Application. 1st May, 1893
Complete Specification Left, 1st Feb.. 1894-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to Valves for Pneumatio Tyres.
I, WALTER TURNER, of 133 Sturland Road, Maida Vale, in the County of
London, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improvement in valves used for inflating and deflating
pneumatic tyres, and it consists in a device for automatically unlocking the valve
from its seating, and locking it thereto as the nozzle of the inflator is respectively
attached to and detached from the stem of the valve, the object being to
automatically unlock and lock the valve by the action of attaching and detaching
the inflator.
The type of valve to which my invention is particularly applicable is that in
which the valve has a foot which protrudes through the stem of the valve thus
enabling the valve to be operated from the exterior of its mountings. The foot of
the valve is so shaped that the valve cannot turn on its seating and it provides a
passage for the air through the stem of the valve.
On the free end of the foot of the valve is cut a left hand thread on which is
screwed a long square or other polysiḍed nut. The thread on the end of the valve
stem, for the nozzle of the inflator to be screwed to, is a right hand one.
The nozzle of the inflator is provided with a square or polysided recess which
engages with the square or polysided nut on the foot of the valve, and as the nozzle
of the inflator is screwed on to the end of the stem of the valve, the nut locking
the valve on to its seating is slackened, thus allowing air to be pumped through
the valve. As the nozzle of the inflator is unscrewed from the stem of the valve the
square or polysided nut is automatically screwed up to lock the valve down to its
seating.
DJ M 1902
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Valves for Pneumatic Tyres.
I, WALTER TURNER, of 133 Shirland Road, Maida Vale, in the County 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 relates to improvements in valves for pneumatic tyres and
comprises a device for automatically unlocking the valve from its seating and

page_text: .
locking it thereto when the nozzle of the inflator is respectively attached to
and detached from the valve.
The invention will be best understood by reference to the accompanying
drawings in which I have represented the device at double its natural size.
these drawings;—
Figure 1 is an elevation of the complete valve.
Figure 2 is a sectional elevation of the closing cap thereof,
Figure 3 a vertical section on the line 3-3 of Figure 1, and
In
Figure 4 a vertical section of portion of the inflator tube and socket or
connector.
Like letters indicate like parts throughout the drawings.
AA is the valve body the flanged head A' of which is adapted to make a tight
joint against the inner surface of the air tube to which it is applied, B B B being
usual fittings adjustable on the outer surface of A for this purpose. The body A
is adapted to project beyond the inner surface of the wheel rim in the usual manner
so that the inflator socket C or connector Figure 4, or the closing cap D Figure 2
may be connected to it. The thread on the outside of A is preferably right-
handed as are also those of the socket C and cap D so as to properly correspond
therewith, and if desired A may have a flattened surface as at A2, Figure 1, so as
to enable it in the usual manner to be fitted to the wheel rim to prevent it from
rotating therein. The interior of the body A is bored out to substantially two
different diameters a smaller part A' extending from the valve seat A* to the
shoulder A where the larger boring A commences. The small flange A' shown in
Figure 3 at the bottom of A may conveniently be "burred-in" after the nut E has
been placed in position in the larger chamber A' of A.
F is the valve head F' F' the stem with which it is preferably formed in part
and F an indiarubber or equivalent washer secured beneath the valve-head F
conveniently by being sprung into an annular groove in F' as shown in Figure 3.
The part F fits loosely in the reduced boring A³ and may be provided with a
recess F with which engages a pin or projection A secured in A for preventing
the valve from rotating in the body A but allowing it sufficient play in an axial
direction to admit of its properly opening and closing as hereinafter explained. The
part F of the valve stem F1 F is provided externally with a preferably left-
handed screw thread with which engages the correspondingly threaded nut E.
This nut is provided with an extension E of conveniently square form though it
may be of any other form excepting circular and concentric.
FL.
The socket or connector C which is tightly fitted in the inflator tube G besides
being provided with a female thread to screw on A and a washer C¹ for making
tight joint against the end of A is also provided with a recess of shape corre-
sponding with that of the nut extension E (in the example illustrated E' and C² are
square) so that the nut may be turned round by means of the connector C. This
may however be effected by means of an extension provided in or on C engaging
with a recess in the end of E or in any other suitable manner.
When it is
The device is normally in the condition shown in the drawings but with the
cap D (which as ordinarily is provided with a suitable washer D') screwed tightly
on the end of A, the valve being securely held to its seat by means of the nut E
which then hears against the shoulder A'. The recess D in the cap D is of
such size that the cap can be rotated without affecting the valve.
desired to inflate the tyre the cap D is removed and the inflator connector C is
screwed on to A which causes the recess C' to engage with the nut extension El
with the result that as the thread on F2 is opposite handed to that on the body the
nut will be unscrewed therefrom and will thus release the valve so that the
inflator may then be used for inflating the tyre and the valve will be free to move
backwards and forwards in the direction of its length. After the inflation is
completed the connector C is unscrewed from A this operation automatically
effecting the closing of the valve by means of the screwed connection of the nut
therewith, which nut is rotated along with the connector.

page_text: The same result may be obtained by having a left-handed screw-thread on A-
and C and a right-handed one on F and E.
The nut E may be flattened at one or more parts of its external surface so as to
give freer access for the passage of the air.
The before described device may be modified without departing from the spirit
of the invention for example if desired I may form the male screw on E and the
female one in or on the valve, I may also form C with a male screw and A with a
female screw.
When it is desired to open the valve for deflating the tyre the nut or
equivalent E may be turned by means of a key which may be of substantially the
same shape as the before described connector and provided with a suitable handle.
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 am aware
that prior to the date of my present application it has been proposed to use with
pneumatic tyres an indiarubber valve on a screwed spindle fitted with a nut for holding
the valve on its seat and prevented from rotating during the turning of the nut
and I make no claim per se to such an arrangement, but what 1 claim is :-
1. A valve device for a pneumatic tyre provided with a screw-threaded body
and in connection with the movable valve a screw and nut whose thread is
opposite-handed to that of the body s bstantially as and for the purpose described.
2. In a valve device for a pneumatic tyre loosening the valve which is normally
held on its seat by a screw by rotating the screw in the operation of screwing the
inflator connector to the device and tightening the valve on its seat by turning
the screw in the operation of unscrewing the inflator connector from the said
device.
3. The combination with a valve such as claimed in the first preceding claim of
an extension or recess on the valve loosening and tightening nut or screw and an
inflator-connector such as C having a recess or extension serving as a key to
engage with said nut or screw substantially as described and illustrated in the
accompanying drawings.
4. In a valve device for a pneumatic tyre the combination of an inflator
connection screwed to one hand and a valve controlling screw screwed to the
opposite hand substantially as and for the purpose described.
5. The combination with a screwed body such as A a screwed valve stem such
as F and a nut such as E the stem and nut being screwed to a hand opposite to
that of the body of a connection such as C screwed to fit the body the whole being
so arranged that as the connection is screwed to the body the nut is turned and the
valve loosened and re-tightened when the connection is removed substantially as
described and illustrated in the accompanying drawings.
6. The combination with a screwed body such as A a valve stem having a nut
and a screw engaging therewith the nut and screw being screwed to a hand opposite
to that of the body of a connection such as C screwed to fit the body the whole
being so arranged that as the connection is screwed to the body the screw is turned
in the nut and the valve loosened and re-tightened when the connection is removed
substantially as described.
7. The combination and arrangement of parts constituting the complete valve
and inflator-connector substantially as described and illustrated in the accompanying
drawings.
Dated this 1st dos of Fohruary 1901
WALTER TURNER.
W. P. Thompson & Boult,
Agents for the Applicant.