Improvements in Valves for the Pneumatic Tyres of Bicyoles, Tricycles, and other Velocipedes and Wheel Carriages.
Year: 1894

page_text: Date of Application, 24th Apr., 1894
Complete Specification Left, 16th Jan., 1895-Accepted, 16th Feb., 1895
PROVISIONAL SPECIFICATION.
Improvements in Valves for the Pneumatic Tyres of Bicyoles,
Tricycles, and other Velocipedes and Wheel Carriages.
I, JOHN VERNON PUGH, of Whitworth Works, Rea Street South, Birmingham,
in the County of Warwick, Mechanical Engineer, do hereby declare the nature of
this invention to be as follows:-
My invention consists of a valve for the pneumatic tyres of bicycles, tricycles
and other velocipedes and wheel carriages the parts of which are constructed,
arranged and operate in the manner hereinafter described. Valves constructed
according to my invention are simple in construction and very efficient in action.
In constructing a valve according to my invention I take a tube of small
diameter and screwed externally. Near the summit of this screwed tube a broad
Hat and preferably oblong head is fixed by brazing or otherwise. The top of the
screwed tube projects slightly above the said head and is made conical. At opposite
points in the said head a straight slot is made the said slots being parallel. Through
these slots the ends of a strip of vulcanized india rubber are passed each end of the
said strip having a hole by means of which the said ends can be passed onto the
screwed tube and the strip thereby secured; or the said strip may be otherwise
secured. The said strip of vulcanized india rubber when in position is in a state of
tension and its middle presses tightly upon the conical mouth or upper end of the
screwed tube. The head of the screwed tube with its india rubber valve is inserted
in the interior of the pneumatic tyre the screwed tube passing through a hole in
the said pneumatic tyre.
A metallic washer is passed onto the screwed tube protruding from the pneumatic
tyre and a long tubular screw box or nut is screwed home against the said washer
and effectually secures the valve air tight to the pneumatic tyre. The outer end
of the screwed tube is provided with the ordinary closing cap.
Or the screwed tube of the valve may be secured air tight to the pneumatic tyre
in the following manner. After the introduction of the flat head of the screwed
tube, constituting the valve proper, into the interior of the tyre the said screwed
tube is passed through the hole in the metallic rim of the wheel to which the tyre
is to be applied. Upon the protruding end of the screwed tube a metallic washer
is passed that side of the said washer bearing against the rim being of a concavity
equal to the convexity of that part of the rim on which it bears; the said washer
consequently cannot rotate when in position. The said washer is made to prevent
the rotation of the screwed tube in the following manner.
On two opposite points of the hole in the washer a tooth or projection is situated
and notches or nicks parallel to the axis of the screwed tube are made in the said
screw the depth of the said nicks or notches being equal to the depth of the thread
of the screwed tube. Hence the washer described while preventing, the rotation of
the said screw permits of its motion in the line of its axis. Upon that portion of
the screwed tube projecting beyond the rim and the washer described an ordinary
screw nut works. By tightening the said screw nut, the valve is firmly fixed in
position. A screw cap fitting on the end of the screwed tube is after the inflation
of the tyre screwed home tightly upon an india rubber or other elastic bed situated
in an angular, elliptical or crossing depression in the screw nut and effectually
secures the compressed air within the tyre.
In order to prevent the liability to loss of the said screw cap I attach it to the
rim by means of two light arms forming a saddle piece which saddle piece may

page_text: 2
turn aside either in the plane of the wheel or in a plane at right angles thereto
when the cap has been 'unscrewed from the screwed tube so as to permit of the
attaching of the inflator or air pump. After inflation the screw cap can be brought
over the end of the screwed tube and screwed thereon.
The removal of the screwed cap from over the end of the screwed tube and its
replacement may be effected by a sliding motion.
Dated this 24th day of April 1894.
Improvements in Valves for the Pneumatic Tyres of Bicycles,
Tricycles, and other Velocipedes and Wheel Carriages.
'I, JOHN VERNON PUGH, of Whitworth Works, Rea Street South, Birmingham
in the County of Warwick, Mechanical Engineer, do hereby declare the nature of
my invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :--
My invention consists of a valve for the pneumatic tyres of bicycles tricycles
and other velocipedes and wheel carriages, the parts of which are constructed,
arranged and operate in the manner hereinafter described. Valves constructed
according to my invention are simple in construction and very efficient in action.
At
In constructing a valve according to my invention I take a tube of small
diameter and screwed externally. Near the summit of this screwed tube a broad
flat and preferably oblong head is fixed by brazing or otherwise. The top of the
screwed tube projects slightly above the said head and is made conical.
opposite points in the said head a straight slot is made the said slots being parallel.
Through these slots the ends of a strip of vulcanized india rubber are passed, each
end of the said strip having a hole by means of which the said ends can be passed
onto the screwed tube and the strip thereby secured; or the said strip may be
otherwise secured. The said strip of vulcanized india rubber when in position is in
a state of slight tension, and its middle presses upon the conical mouth or upper end
of the screwed tube. The head of the screwed tube with its india rubber band is
inserted in the interior of the pneumatic tyre the screwed tube passing through a
hole in the said pneumatic tyre. After the introduction of the flat head of the
.screwed tube constituting the valve proper, into the interior of the tyre, the said
screwed tube is passed through the hole in the metallic rim of the wheel to which
the tyre is to be applied. Upon the protruding end of the screwed tube a metallic
washer is passed that side of the said washer bearing against the rim being of a
cencavity equal to the convexity of that part of the rim on which it bears, the
said washer consequently cannot rotate when in position. The said washer is made
to prevent the rotation of the screwed tube in the following manner.
On two opposite points of the hole in the washer, a tooth or projection is situated
and notches or nicks parallel to the axis of the screwed tube are made in the said
screw, the depth of the said nicks or notches being equal to the depth of the thread
of the screwed tube. Hence, the washer described while preventing the rotation
of the said screwed tube is capable of motion in the line of the axis of the said
screwed tube. Upon that portion of the serewed tube projecting beyond the rim
and the washer described, an ordinary screw nut works. By tightening the said
screw nut the valve is firmly fixed in position. A screw cap fitting on the end of
the screwed tube is after the inflation of the tyre screwed home tightly upon an india-
rubber or other elastic bed situated in an angular, elliptical or crossing depression
in the screw nut and effectually secures the compressed air within the tyre.

page_text: Or the screwed tube of the valve may be secured airtight to the pneumatic tyre
in the following manner.
A metallic washer is passed onto the screwed tube protruding from the pneumatic,
tyre and a long tubular screw box or nut is screwed home against the said washer,
and effectually secures the valve air tight to the pneumatic tyre. The outer end of
the screwed tube is provided with the ordinary closing cap.
In order to prevent the liability to loss of the said closing screw cap, I attach it
to the rim by means of two light arins forming a saddle piece, which saddle piece
may turn aside either in the plane of the wheel or in a plane at right angles
thereto when the cap has been unscrewed from the screwed tube so as to permit of
the attaching of the inflator or air-pump. After inflation the screw cap can be,
brought over the end of the screwed tube and screwed thereon.
The removal of the screwed cap from over the end of the screwed tube and its
replacement may be effected by a sliding motion.
Figure 1 of the accompanying drawing represents partly in elevation and partly
in section, a valve constructed according to my invention, applied to a pneumatic,
yred wheel and Figure 2 represents a cross section of the same;
Figures 3 and 4 represent my improved valve in elevation and plan detached and
Figure 5 is a cross section of the same taken on the dotted line Figure 3;
Figures 6, 7 and 8 represent parts of the same detached as hereinafter
described;
Figures 9, 10 and 11 represent a modification of the valve and
Figures 12, 13, 14, 15 and 16 represent appliances for connecting the closing
screw cap to the metallic rim of the wheel.
The same letters of reference indicate the same parts in the several figures of
the drawing.
a is the screwed tube of the valve (shown separately in Figure 6) through
which the tyre is inflated, the said tube a having at top the large flat head a². The
slightly conical part a³ of the tube a, protruding above the head a² is closed
airtight by means of the strip of vulcanized india rubber b (shown separately in
Figure 7) which is connected to the head a2 of the tube a in the following manner.
One of the holes in the strip of vulcanized india rubber is passed onto the
tube a and the other end is passed over the head a' and conical end a³ of the tube a
and through the slot a'; and the other hole in the strip bis passed onto the
tube a; the india rubber strip b is thereby secured in a state of slight tension on
the head of the tube a. The part of the head a² on each side of the tube a may
be symmetrical, in which case, two slots parallel to each other are made in the said
head a³ in place of the cut away part and slot a' represented.
The closed head a² of the valve is passed into the interior of the pneumatic tyre
by forcing the point end of the said head through the hole in the said tyre and;
when the said tyre is applied to a wheel, the tube a is passed through the valve
hole in the rim of the wheel as represented in Figures 1 and 2, where the tyre is
marked c and the metallic rim d. The valve is connected to the tyre and rim by
a washer e and screw nut f and the bottom of the screwed tube a is furnished with
the ordinary screw capi. The said washer e is prevented from turning on the
screwed tube a, while it is capable of a sliding motion, by projections e, e taking
into grooves at opposite sides of the said tube a as best seen in Figure 5. The
nut has a recess in its top in which a leather or other washer 9 is inserted as will
be best seen by referring to the detached view Figure 8. The said washer g
constitutes a slightly yielding bed for the closing cap to seat itself upon.
The action of the valve is as follows;-When the inflating pump is attached to
the screwed end of the tube a and is operated, the air forced up the tube raises the
strip of india rubber b of the valve and opens the conical end a' of the tube a and
the air passes into the tyre. When the tyre is inflated, the air is prevented from
escaping by the pressure of the air on the top of the said strip closing it on the
top of the seat a².
Instead of the india rubber strip b a small hollow india rubber ball or cap
k
may

page_text: be placed over the head a' of the tube a as illustrated in the modified valve
Figures 9 and 10, the said ball or cap k having a slit or hole in one side which
opens when the ball or cap is distended in the inflating operation, but which
closes when the ball is collapsed, as represented, by the pressure of the air within
the tyre when not inflating.
The closing cap i may be attached to the rim of the wheel in either of the
following ways, so as to prevent liability to loss of the said closing cap.
In the arrangement Figures 12, 13, 14 and 15, 1 take a strip of thin sheet metal,
represented in Figure 12 and bend it so as to constitute a saddle piece or carrier l,
for the closing cap i as represented in Figures 13, 14 and 15 the ends of the arms
of the said saddle piece or carrier engaging and turning in slots m, m made in the
wheel rim. Or the said saddle piece or carrier may be made of wire as represented
in Figure 16. In each of the said arrangements the middle portion of the carrier
has an eye through which the closing cap passes.
When the closing cap i is unscrewed the said carrier together with the closing
cap may be turned aside as indicated in dotted lines in Figure 13, and the inflating
pump can be applied to the valve tube a for inflating the tyre.
Or I attach the closing cap by the arrangement represented in Figures 10 and 11.
In this arrangement the closing cap i is engaged in a slot n² in an elliptical shaped
sheet metal spring n attached to the long tubular screw nut f' of the valve.
When the screw cap i is unscrewed it may be passed along the slot n³ to either.
side of the tube a so as to enable the inflating pump to be attached to the
Baid tube a.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that I claim as
my invention of "Improvements in valves for the pneumatic tyres of bicycles,
tricycles and other velocipedes and wheel carriages";-
First. Forming the valves proper of pneumatic tyres of a strip of sheet
vulcanized india rubber stretched over a head of the kind described fixed on the
inner end of the screwed tube of the valve substantially as hereinbefore described
and illustrated in the accompanying drawing.
Secondly. The arrangement or combination of parts constituting a valve for
pneumatic tyres herein before described and illustrated in Figures 1, 2, 3, 4, 5, 6, 7
and 8 of the accompanying drawing; also the combination of the parts of the
modified valve hereinbefore described and illustrated in Figures 9 and 10 of the
accompanying drawing.
f
Thirdly. Attaching the closing caps of the valves of pneumatic tyres to the
metallic rims of the wheels by means of light arms or carriers, or by means of a
sheet metal elliptical shaped slotted spring substantially as hereinbefore described
and illustrated in Figures 11, 12, 13, 14, 15 and 16 of the accompanying
drawing.
Dated the Fifth day of January 1895.
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