Improvements relating to Inflating Valves for Pneumatic Tyres and other Articles.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Inflating Valves for Pneumatic Tyres
and other Articles.
I, WILLIAM HOWARD, of 13, Theobald's Road, in the County of London, Boot-
maker, do hereby declare the nature of this invention to be as follows:-
This invention is designed to prevent the pressure in a tyre or other article
from diminishing appreciably, should the valve leak.
It has been found in practice that it is very difficult, if not impossible to
prevent a valve leaking, especially when such valve is fitted to tyres employed
for heavy vehicles and motor cars.
According to this invention, I suitably attach over the valve a bladder or
small india rubber cap, to receive any air which may escape through the valve.
The bladder or cap, I cover with an outer covering, to prevent such bladder or
cap from bursting. The said cover may consist of a leather cap moulded to
suitable form, such cap having a flange to screw on to the felloe or rim of the
wheel. Thus when air escapes through the valve it will pass into the aforesaid
bladder or small cap, without appreciably diminishing the pressure in the tyre.
Dated this 20th day of September 1899.
BROWNE & Co.,
Agents for the Applicant,
9, Warwick Court, Gray's Inn, London, W.C.
Improvements relating to Inflating Valves for Pneumatic Tyres
and other Articles.
I, WILLIAM HOWARD, of 13, Theobald's Road, in the County of London, Boot-
maker, 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 is designed to prevent the pressure in a tyre or other article
from diminishing appreciably should the valve leak.
It has been found in practice that it is very difficult, if not impossible to
prevent a valve leaking, especially when such valve is fitted to tyres employed
for heavy vehicles and motor cars.
According to this invention, I suitably attach over the valve a bladder or
small india rubber cap, to receive any air which may escape through the valve.
The bladder or cap I cover with an outer covering to prevent such bladder or

page_text: cap from bursting. The said cover may consist of a leather cap moulded to
suitable form, such cap having a flange to screw on to the felloe or rim of the
wheel. Thus when air escapes through the valve it will pass into the aforesaid
bladder or small cap, without appreciably diminishing the pressure in the tyre.
And in order that my said invention may be better understood I will now
proceed to describe the same with reference to the drawing accompanying this
specification which shews my appliance fitted over a valve.
b shews an
a shews bladder or small cap fitted over the inflating valve c.
outer covering.
The rubber cap a is cemented on to the ring d, this ring is provided with an
internal thread screwing on to the smaller portion e of the valve stem c. A
ring fis sprung over the cemented portion of the 'cap', in order to more securely
hold the said cap.
The outer covering b is secured in a similar manner on to the part g of the
valve-steme by means of rings d' f¹.
In order to inflate the tyre, the outer covering is unscrewed and removed
and likewise the inner cap a, when the tyre can be inflated in the ordinary way.
The cap and cover are then replaced.
Instead of having a cap with an outer covering I may have a single cap of
metal or other suitable material capable of resisting the air pressure.
Having now particularly described and ascertained the nature of by said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. Providing valves for inflating pneumatic tyres and other articles, with an
air tight cap for the purpose set forth.
2. Providing valves for inflating pneumatic tyres and other articles, with a
flexible air tight cap, in combination with an outer covering substantially as and
for the purpose set forth.
2011 1
T1
1000
BROWNE & Co.,
Agents for the Applicant,
9, Warwick Court, Gray's Inn, London, W.C.
BROWNE & Co.,
Agents for the Applicant,
9, Warwick Court, Gray's Inn, London, W.C.