Improvements in Valves.
Year: 1892

page_text: Date of Application, 3rd Oct., 1892
Complete Specification Left, 3rd July, 1893-Accepted, 5th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Valves.
I, JAMES CROCKART STEWART of 101 Renfrew Street, Glasgow, Scotland,
Mechanic, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in valves which are applicable for the
tyres of bicycles, omnibuses and other vehicles having pneumatic tyres or other
articles containing air or gases under pressure.
The invention consists of a spindle at one end of which there is a pad which
rests in its seat in the valve casing, and is held in position by means of a perforated
washer which compresses a spiral spring on its spindle. In the centre of the
spindle where the pad is freed there is a hole into which there is screwed a pin
or stud fixed in the inside of a cap or cover. This cap with screw or stud locks
or secures the valve, acts as a dust protector, and is a push for adjusting the
pressure exerted within the container.
Dated this 1st day of October 1892.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.
COMPLETE SPECIFICATION.
Improvements in Valves.
I, JAMES CROCKART STEWART, of 101 Renfrew Street, Glasgow, Scotland,
Mechanic, 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 which are applicable for the
tyres of bicycles, omnibuses and other vehicles having pneumatic tyres or other
articles containing air or gases under pressure.
The invention consists of a spindle at one end of which there is a pad which rests
in its seat in the valve casing and is held in position by means of a perforated disc
which compresses a spiral spring on the spindle. In the centre of the spindle
where the pad is fixed there is a hole into which there is screwed a pin or stud
fixed in the inside of a cap or cover. This cap with screw or stud locks or secures
the valve, acts as a dust protector, and is a push for adjusting the pressure exerted
within the container.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended an explanatory sheet of drawings in the several
figures of which corresponding parts are marked with the same letter of reference.
Figure 1 is a section of the valve for fixing on to a pump.
Figure 2 is a section, and Figure 3 an outside view of the valve with the cap
and screw for locking and securing the valve in position.
Figure 4 represents the perforated disc.
The valve consists of a pad a with spindle 6 passing through a perforated disc c.
The spindle has a feather d which works in a guide e in the perforated disc c.
Around the spindle 6 there is a spiral spring which is kept in compression between
the perforated disc and the pad and keeps the pad pressed up against the valve seat g.
In Figure 1 the upper screw is for attachment to the pump, and the lower screw
is for attachment to the vessel into which the air or gas is to be pumped.
Figures 2 and 3 represent a modification of my invention with an arrangement
ID

page_text: for locking the valve after the required pressure inside has been attained. In this
case a hole provided with an internal screw is made in the upper part of the spindle,
into which is screwed a pin or stud having a cap or cover i. Between the top of
the valve seat and the underside of the cap i a washer is provided. In Figure 2
the valve is shown screwed into a coupling & which is suitable for attaching to
pneumatic tyres.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is
1. The valve for coupling on to a pump as described and illustrated in Figure 1.
2. The valve provided with an arrangement for locking or securing it in position
as described and illustrated in Figures 2 and 3.
Dated this 1st day of July
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.