Improvements in Inflating Tubes for Pneumatic Tyres.
Year: 1894

page_text: Date of Application, 31st Oct., 1894
Complete Specification Left, 23rd Jan., 1895-Accepted, 2nd Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Inflating Tubes for Pneumatic Tyres.
We WALTER ELLIS of 83 Charles Street in the Borough of Kingston-upon-
Hull Mechanical Engineer JAMES ELLIS of the same place Drysalter Manu-
facturer and THOMAS SPURR of Hanover Chambers Lowgate in the same
borough Gentleman do hereby declare the nature of this invention to be as
follows:-
--
The construction of this tube without a valve, as in common use, for tyres of
wheels is shewn by the accompanying diagrams. Diagram 1 shews this tube when
open to receive the air by means of the air pump and Diagram 2 shews the tube
when screwed up and in effect hermetical sealed.
The letters hereafter mentioned refer to the letters of the Diagrams 1, 2 and 3.
The elastic tube of the tyre is represented by A through a small hole in which
the body, at the mushroom head end of the metal tube B, is passed. B is a hollow
metal tube, screw threaded having a mushroom head C as a stop inside the air
tube with the flat plate D juxtaposed to the outside of the air tube and held tightly
in position by the hexagonal nut E so as to make an airtight joint between the
metal tube B and the air tube. A small patch of canvas is stuck outside the air
tube to strengthen it where the hole is made in the tube.
The rim represented is Ball's hollow section marked F and below the rim is a
hexagonal nut G. The outside of the body of the metal tube B being screw
threaded the nut G travelling upwards jams against the rim F and thus secures
the metal tube B to the rim the lips of the flat plate D fitting into the bed of the
rim so that the metal tube B cannot turn round. H is a separate hollow internally
screwed connection cover or cap having an externally screwed stem K as part
thereof, with a round hole in the centre of this stem.
H is made so as to screw on to the metal tube B and through the side of H and
centre of K is bored a hole large enough to admit the air to be pumped into it by
an air pump attached on K temporally when forcing in the air. J is a round
washer of leather or some similar light substance capable of being affected by
pressure near the size of and made so as readily to be inserted in the hollow of
the cap H and having a round hole through the centre. N shews the hole at the
bottom of the metal tube B and its continuance through the leather washer J.
M shews the orifice of the hole in the stem K. P shews the dust cap and the
chain attached thereto and R shews a check nut to screw down to and hold
and check the cap H. The whole tube is made of brass or other similar metal.
To put the inflating tube together and inflate it-make a suitable hole in the
elastic tube and pass the metal tube B at the mushroom head end, through this
hole into the elastic tube,-then put on a small patch of canvas round the outside
of the hole after which put on the plate D at the outside of the elastic tube,—then
screw the nut E tightly up to the plate D-next pass the tube B at the other end
through the rim, then put on the nut G tight to the rim F after which screw on
Then screw on the cap H having the leather washer inside and the dust
cap and chain attached. Now screw nut R to top of cap H to hold all tight. As
now described the whole is represented by Diagram 2 and is as is used when
nut R.
inflated.
To inflate the elastic tube take off the dust cap and screw on to the stem K an
air pump. Give the cap H one or two turns downwards when it will be seen as
represented by Diagram 1 that there is then a direct means of forcing the air

page_text: When
through stem K under through and around the leather washer J and thence
through the metal tube B and the mushroom head C into the elastic tube.
the elastic tube is filled give the cap H cne turn or so upwards until it jams the
washer tightly to the bottom of H and the exit of air from the elastic tube is
effectually and permanently stopped from escaping. Then turn the check nut R
down tight against H. Then take off the air pump and put on the dust cap and
the inflated tube is ready for use.
When it is desired to let out the whole or a portion of the air from the inflated
tube unscrew and take off H wholly or partially and the air will escape.
Dated this Thirtieth day of October 1894.
WALTER ELLIS.
JAMES ELLIS.
THOS. SPURR.
Improvements in Inflating Tubes for Pneumatic Tyres.
We, WALTER ELLIS Mechanical Engineer, and JAMES ELLIS Drysalter, both
of Number 83 Charles Street, and THOMAS SPURR Solicitor, of Hanover
Chambers, all in the Borough of Kingston-upon-Hull in the County of Yorkshire,
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 :-
Our invention relates to an improved valve for pneumatic tyres, and it consists
essentially of the usual tubular stem adapted to be attached to the tyre, of a cap
adapted to close the orifice of the said stem and carrying a nozzle the orifice of
which is eccentric with the orifice of the valve stem, and of a flexible washer
adapted when the cap is screwed on to the valve stem to seal the orifice both of
the valve stem and of the eccentric nozzle, the object being to obtain a valve which
will absolutely prevent the escape of air.
In the accompanying drawing which illustrates our invention;
Figure 1 is a view in elevation--partly in section-thereof.
Figure 2 is a view in plan thereof, and
Figure 3 is a broken view in sectional elevation showing the valve open ready
for inflation.
Throughout the views similar parts are marked with like letters of reference.
Referring to the drawings, A designates the valve stem which is provided with
the usual mushroom shaped head a, washer a', and lock nut a². The bore of the
stem A is constricted to form a narrow orifice a³ and to provide a seating a for
the flexible washer C. B designates the valve cap screwed on to the end of the
stem A and D the nozzle carried by the said cap, the orifice d of the said nozzle
being eccentric with the orifice a of the valve stem A. The nozzle D is provided
with the usual dust cap E. The flexible washer C is of such a size that it is free
to move in the valve cap B and it is provided with a small central hole c to coincide
with the orifice a³ of the valve stem A.
The action of the valve is as follows:-When it is desired to inflate a tyre the
valve cap B is screwed back to free the washer C as shown by Figure 3, the
nozzle of the inflating pump is then screwed on to the nozzle D and the air
forced into the tyre. When the tyre is inflated the valve cap B is screwed up to
jam the flexible washer C between it and the seating a of the valve stem A thus
closing both of the orifices a³ and d. When it is desired to release the air in
the tyre the cap B is either wholly or partially unscrewed from the stem of the
valve.

page_text: We wish it to be particularly understood that we do not limit ourselves to the
precise details of construction herein before described and illustrated by the accom-
panying drawing, but that we hold ourselves at liberty to make such changes and
alterations as fairly fall within the spirit and scope of our invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
(1) The improved valve for pneumatic tyres, substantially as herein before
described and illustrated by the accompanying drawing.
(2) A valve for a pneumatic tyre, consisting essentially of a stem such as A
adapted to be attached to the pneumatic tyre in the usual manner, of a cap such
as B adapted to be screwed on to the free end of the stem A, of a nozzle such as D
the bore or orifice of which is eccentric with that of the valve stem A, and of a
flexible washer such as C having a small central hole c to coincide with the orifice
of the valve stem A, all combined, arranged and operating, as and for the purpose
set forth.
Dated this 22nd der of Lan 1805
ROBERT E. PHILLIPS, M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.