Improvements in the Construction of the Air Pump and its Con- necting Tube, used for Inflating Pneumatic Tubes or Tyres around Wheels.
Year: 1894

page_text: Date of Application, 15th Nov., 1894
Complete Specification Left, 14th Sept., 1895-Accepted, 26th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Construction of the Air Pump and its Con-
necting Tube, used for Inflating Pneumatic Tubes or Tyres
around Wheels.
We WALTER ELLIS, Mechanical Engineer and JAMES ELLIS Manufacturing
Drysalter, both of 83 Charles Street in the Borough of Kingston-upon-Hull and
THOMAS SPURR of Hanover Chambers, Lowgate, in the Borough of Kingston-
upon-Hull Gentleman do hereby declare the nature of this invention to be as
follows:-
In being able to prevent the return to the airpump of air from an elastic tube
or tyre (and the metal inflating tube connected therewith that has no valve in it)
during the process of inflating by means of a valve inserted in the elastic connecting
tube placed on the nozzle of the airpump instead of placing the valve in the metal
inflating tube.
Dated this Fourteenth day of November 1894
WALTER ELLIS.
JAMES ELLIS.
THOS. SPURR.
Improvements in the Construction of the Air Pump and its Con-
necting Tube, used for Inflating Pneumatic Tubes or Tyres
around Wheels.
We, WALTER ELLIS, Mechanical Engineer, and JAMES ELLIS Manufacturing
Drysalter, both of 83 Charles Street in the Borough of Kingston-upon-Hull, and
THOMAS SPURR of Hanover Chambers, Lowgate, in the Borough of Kingston-
upon-Hull, Gentleman, 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 consists in the introduction and use of a non-return valve in the
elastic tube used to connect the nozzle of an inflator or air pump with the inflating
tube of a pneumatic tyre or the like, the object being to dispense with the usual
valve in the inflation tube of a pneumatic tyre.
In the accompanying drawing which illustrates this invention,
Figure 1 is a broken view in plan elevation, and
Figure 2 is a sectional plan on line x, x, Figure 1.
Throughout both views similar parts are marked with like letters of reference.
In the flexible connecting tube A, which is adapted to be attached to the inflating
tube of a tyre by the ordinary screw nozzle a, is placed a short length of tube B
made of metal, vulcanite or other suitable hard material, the said tube being held
and securely fixed in the elastic tube A by means of a binding C of wire or other
suitable material. In the tube B is mounted a non-return valve consisting
essentially of a circular disc D of rubber or other suitable material adapted to close

page_text: the forward end of the tube and retained in its position by means of a central pin
such as E the other end of which is bent over outside the other or opposite end of
the tube to retain the valve in position and limit its lift. It will thus be seen
that by the use of this valve in connection with an inflator, the ordinary non-return
valve in the inflation tube of the tyre may be dispensed with.
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 combination with an inflator for pneumatic tyres and the like, of a
non-return valve arranged and adapted to operate substantially as and for the
purpose set forth.
(2.) The combination with the flexible connecting tube of an inflator_for
pneumatic tyres and the like, of a non-return valve arranged and adapted to
operate substantially as and for the purpose set forth.
Dated this 14th day of Sentember 1895
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.