Improvements in Valves and Inflators for Pneumatic Tyres of Wheels, also Saddles, Footballs, and such like.
Year: 1892

page_text: Date of Application, 2nd Jan., 1892
Complete Specification Left, 3rd Oct., 1892-Accepted, 19th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in Valves and Inflators for Pneumatic Tyres of
Wheels, also Saddles, Footballs, and such like.
JOSEPH BUCHANAN ROBERTSON and THOMAS WILSON ROBERTSON both of
184 Grosvernor Street Belfast Ireland Mechanical Engineers do hereby declare
the nature of this invention to be as follows:-
The body or frame of our improved valve may be of metal vulcanite or other
suitable material made in the form of a bolt which is made screw threaded on the
head as well as on the shank a small hole is made through it for the passage of air
or gas used for inflation the head of the body as represented by the head of a bolt
we recess to a size in excess of the hole through the bolt and into this recess we
fit a piece of india rubber or other suitable flexible material in combination therewith
and through which a hole is pierced, to the part like a bolt head we screw a hollow
cap which so compresses the flexible material that the hole through it is completely
closed thereby preventing any escape from the inflated tyre, saddle, football and
such like. To effect the inflation or deflation in connection with the use of this
valve we make an improved inflator the point of which is detachable and reversible.
To inflate it is only necessary to pass the point of the inflator which is made fine
for the purpose through the flexible material in the recess above described and
To deflate it is only necessary to
operate the inflator in the usual manner.
have the point and inflator separate, when the point is inserted the hole through
it allows the air or gas to escape. When not in use the point of the inflator
being attached in the reverse position is protected from damage and altogether
more compact.
We wish it to be understood that this our improved inflator may be used
advantageously for inflating or deflating tyres, saddles, footballs and such like
not fitted with our improved valve as described.
Lot Ton 1800
JOSEPH BUCHANAN ROBERTSON,
THOMAS WILSON ROBERTSON,
184, Grosvenor Street, Belfast.
COMPLETE SPECIFICATION.
Improvements in Valves and Inflators for Pneumatic Tyres of
Wheels, also Saddles, Footballs, and such like.
JOSEPH BUCHANAN ROBERTSON, and THOMAS WILSON ROBERTSON, both
of 184 Grosvernor Street, Belfast, Ireland, Mechanical Engineers, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement :-
Our improved valve has a frame somewhat resembling an ordinary screw bolt of
small size, as will be seen by reference to the accompanying drawings of which,
Figure 1, shows the various details the same letters having reference to the same
parts throughout.
A, represents the frame screw threaded on the stem, for fastening by nuts to the
tyre, saddle, football, or other inflatable goods to which it may be applied the head
is hollowed out to hold a piece of india-rubber or other compressible material B,
with a small hole or air passage through it, the head is also screwthreaded to fit the
cap C, which being screwed tight compresses B, and prevents the escape of the air

page_text: or gas from the inflated tyre, saddle, football or the like. D, is a nut to fasten the
frame to the expansible bag, and E, is an additional nut for fastening the frame to
the metal rim of a wheel.
Figure 2, represents the valve when put together, all the parts being shown in
proper position.
Figure 3, represents the various parts of our improved detachable and reversible
pointed inflator.
Figure 4, represents our improved inflator and parts in detail ready for use in
combination with our improved valve, but by dispensing with the point F, it may
be used for inflating with valves of the usual sort in use. The point F, is shown
as having a hollow air channel through its entire length, but it is obvious that it
may be made hollow for only a certain portion, and a hole made in its side to
connect the air channel which would allow a very fine solid point to be used, this in
some instances might be advantageous. G, is a screwed socket for connecting the
point to a piece of flexible tube H. and I, is a similar socket of a larger size
to connect with the piston of an inflator J, such as are commonly used.
Figure 5, shows the inflator when the point is reversed, to preserve the point
when not in use, and also to make the complete inflator more compact for
carrying.
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 :-
:-
1st. A valve made with a frame screwthreaded and recessed to hold a piece of
india-rubber or other flexible or compressible material, and a cap also screwthreaded
and fitted so that by screwing it tight the rubber or other compressible material
will have its air passage closed against any possible escape from the tyre, football,
saddle or other inflated article to which the valve is applied.
2nd. An inflator having a point detachable and reversible so as to prevent it
from damage, and make the inflator more compact for carrying when not in use.
Dated this 1st day of October 1892.
JOSEPH BUCHANAN ROBERTSON.
THOMAS WILSON ROBERTSON.