Year: 1894

page_text: Date of Application, 29th June, 1894
Complete Specification Left, 29th Apr., 1895-Accepted, 8th June, 1895
I, JAMES ANDREW of 160 West George Street, in the City and County of
Glasgow, Solicitor, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to an improved construction of valve for use in
connection with pneumatic tyres and the like.
Under one arrangement my improved valve consists of a tube or cylindrical
hollow chamber open at the one end and formed with :a.solid head at the other ibut
with a small orifice or opening through centre of 'head and which I hereinafter
term the valve stube.
This tube would be formed with screw threads on its inner and outer surfaces
and be formed with a narrower plain diameter towards its solid head end. A
helical or spiral spring would be portably fitted with a narrow short tube with
solid capped end, and this spring and tube would be inserted within the aforesaid
valve tube for the projecting out end of spring to bear up against .the.solid head
end of valve tube, while an open annular space would be formed between the outer
valve tube and the inner capped tube. The capped end of inner tube would be
formed of dished or concave shape on its outer surface and a portable leather or
other washer would be inserted in outer tube filling its diameter to bear over the
capped end of inner tube aud said washer would be formed with a narrow opening
or orifice at it's centre.
Another tube formed with screw threads on its outer surface would be screwed
within the valve tube for its end to bear over the leather washer and this tube
would be formed with a screwed end of narrower diameter for coupling an air
inflating tube or pump on to it. The head of valve tube would be placed inside
the pneumatic tube and a washer and screw nut would be fitted on its screwed
surface outside pneumatic tube for effectually securing it to the latter.
In inflating the pneumatic tube the air would be pumped through the tube at
outer end of valve tube and pass through the orifice at centre of leather washer
and then pass on through the annular space formed between inner capped tube and
outer tube and escape past the spring through the orifice at solid head end of
valve tube to inflate pneumatic tube. While the return or escape of the air will
be prevented by the leather washer and none can escape unless the tube at outer
end of valve tube be slackened or unscrewed.
Dated the 28th June 1894.
W. R. M. THOMSON & Co.,
92, Buchanan 'Street, Glasgow, Agents.

page_text: Improvements in and relating to Valves for Pneumatic Tyres and
the like.
I, JAMES ANDREW of 160 West George Street in the City and County of
Glasgow, Solicitor, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to an improved construction of valve for use in
connection with pneumatic tyres and the like.
And in order that my said invention and the manner of performing or carrying
the same into practice may be properly understood I have hereunto appended an
explanatory drawing in which Figure 1 represents a sectional view and Figure 2
an external view of my improved valve, and Figure 3 is a view of a rod which
would be inserted to open the valve when the tyre is to be deflated.
Referring to these drawings:-Under the arrangement shown my improved
valve consists of a tube or cylindrical hollow chamber a open at the one end a¹
and formed with a solid head at the other end a² but with a small orifice or
opening a through centre of head a² and which tube I hereinafter term the
valve tube.
This tube a would be formed with screw threads on its inner and outer surfaces
as shown and be formed with a narrower plain diameter towards its solid head
end a² as shown. A helical or spiral spring b would be portably fitted with a
narrow short tube b' and solid capped end 62 and this spring b and tube b¹ would
be inserted within the aforesaid valve tube a for the projecting out end of spring b
to bear up against the solid head end a² of valve tube a, while an open annular
space c would be formed between the outer valve tube a and the inner capped
tube . The capped end 62 of inner tube b¹ would preferably be formed of
dish or concave shape on its outer surface, and a portable leather or other washer d
would be inserted in outer tube a to bear over the capped end 62 of inner tube b.
Another tube e formed with screw threads on its outer surface as shown would
be screwed within the valve tube a for its end to bear over the leather washer
and this tube e would be formed with a screwed end e¹ of narrower diameter for
coupling an ordinary air inflating tube or pump on to it. The head a² of valve
tube a would be placed inside the pueumatic tube g and a washer g¹ and screw nut
or collar g would be fitted on its screwed surface outside pneumatic tube
effectually securing it to the latter. In inflating the pneumatic tube c the air
would be pumped through the tube e at outer end of valve tube a and press open
the leather washer d and then pass on through the annular space e formed between
inner capped tube 61 and outer tube a and escape past the spring 6 through the
oriface a at solid head end a² of valve tube a to inflate pneumatic tube c, while
the return or escape of the air will be prevented by the leather washer & and none
can escape unless the tube e at outer end of valve tube a be slackened or unscrewed ;
but should it be desired to instantly deflate the pneumatic tube c this can be
effected by inserting a sliding or screwed rod d' shown in Figure 3. to act on the
leather disc d and push in the cap b¹ and spring b.
for
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The constructing of valves for pneumatic tyres and the like substantially as
herein described in reference to and shown in the accompanying drawings.

page_text: 2. In valves for pneumatic tyres and the like the arrangement and use of a
spring cap or equivalent acting device within the valve tube substantially as
herein described in reference to and by way of application shown in the
accompanying drawings.
Dated the 27th day of April 1895.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.