Improvements in the Valve Connections and Fittings of Pneumatic Tyres of Cycle and like Wheels.
Year: 1892

page_text: Date of Application, 27th June, 1892-Accepted, 6th Aug., 1892
COMPLETE SPECIFICATION,
Improvements in the Valve Connections and Fittings of Pneumatic
Tyres of Cycle and like Wheels.
I, ROBERT FREDERICK HALL, of the R. F. Hall Manufacturing Company, of
Sampson Road, North, Sparkbrook in the City of Birmingham, Manufacturer 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 the valves, or valve fittings of pneumatic tyres of
cycle wheels, and is an improvement or improvements upon that type of valve as
described in the Specification of Woods's Patent No. 4175 year 1891.
The said Patent comprises three primary members or parts, viz. -a pump
connection, an air plug, with valve and seating, and surrounded by a union,
and a pillar or body part, within the entrance of which, the former air plug part
is located, whilst the said pillar or body part is connected by a foot flange, to the
material or plys and rim forming the pneumatic tyre.
In this class of valve fitting, the stalk or air plug, when in position, is capable of
rotating, which is undesirable, as when tightly screwed home by the rotation of
the union, the rubber of the bulbous seating of the valve, coming upon the like
shaped seating or shoulder at the mouth entrance to the pillar or body part,
becomes worn or cut, by the abrasion, consequent upon the screwing home of the
pump connection, which takes upon a screwed neck, extending upwards from the
body of the stalk of the air plug.
Thus, after the said air plug has been screwed home or clamped in position, by'
the screwed union, the screwing home of the pump connection upon the screwed
neck, causes the said air plug to be slightly rotated with the pump connection, hence
the abrasion and cutting of the rubber seatings.
My invention has for its object, in the first part, the remedying of this defect, or
these defects, by so arranging or fitting the said air plug, within the interior of the
pillar or body part, that the former incapable of rotation, on the screwing upon
its neck part of the pump connection, and this I perform by providing the body
of the said valve stalk part with lugs, which are adapted to take within grooves or
slots, cut or formed within the outer end of the pillar or body part, so that the passing
of the lugs of the one part into the gaps of the other part, and the screwing up of
the union, creates a lock.
The second part of my invention has for its object, the making of the connection
of the pump tube, with pump connection tail end.
Heretofore, the said connection has been made by wireing, which is tiresome to
accomplish, and when done, is liable to cut the rubber, hence the unfastening of
the parts.
According to my invention the connection of the rubber tubing to the pump
connection tail end part, is made by an open-jointed and slipped-on ring, in lieu
of wireing.
My invention of the third part, consists in the manufacture of the air plug of two
or more component parts, instead of making the same solid.
In carrying out the first part of my invention, I take a pillar or body part,
having an axial hole through its middle, with the mouth or entrance to the same
enlarged, and seated at a short distance from the said mouth. The extreme top
outer edge of the said body part, which has a circular foot or flange at its other or
inner end, is gapped with-slots, wherein lugs upon the two opposite sides of the body
part of the air plug, take, when the latter is placed within the hollow of the fore
part of the pillar or body.

page_text: The depending stalk of the valve part is swelled, or made bulbous at its
junction with the body part, and over which, and a side hole in the air plug, a
sleeve or casing..of rubber, is stretched, thus forming the valve bearing, and the
outlet hole closer.
It is thus understood that the stalk of the valve part, is of less diameter than
the bore of the pillar, and that sufficient clearance.is left between the rubber sleeve.
and the bore, to admit of the said-sleeve expanding, to allow the air forced through
the same, to pass through the pillar or body to the tyre to be inflated.
At the junction of the screwed neck part of the air plug, which extends through.
a hole in the crown of the union, is a shoulder of greater diameter than the said
hole in the said crown, whilst the entrance to the union is inside screwed, and takes
upon the outside screwed and gapped part of the pillar or body part.
The screwing home of the union forces the air plug part to its seating without
rotation, as the lugs can only traverse within the straight gap.
In the pump connection part, I affix the end of the flexible tube to the tail
end of the same, which is annularly grooved, by an open jointed, or by a closed
ring.
If desired, the metallic coupling part may be dispensed with, and the end of air
pump tubing to be connected, may be passed directly upon the tail end of the air
plug, and which tail end may be annularly grooved or otherwise shaped, and may
be fitted, if necessary, with a coupling ring.
In the making up of the air plug, I take two or more component parts, and connect
the same together by soldering, sweating or otherwise.
Figure 1 of the accompanying drawing represents in vertical section, a portion of
a pneumatic tyre having a valve fitted and provided, and the air plug member made,
according to my invention.
Figure 2 represents a side elevation of the body and air plug members, with the
union in section, and with the said members shown coupled together, by the
passing of the lugs or studs upon the one, into the like shaped gaps or recesses
within the other.
Figure 3 is a cross section, upon the dotted lines A. B. Figure 1.
Figure 4 represents the body or pillar of the valve separately, and with the outer
termination of the same partly in section.
Figure 5 is a complete elevation of the said body or pillar part, but shown at right
angles to that of Figure 4, thus exhibiting more clearly the gaps or side recesses,
wherein the studs or lugs upon the air plug member takes, hence the prevention of
the rotation of the rubber facing of the valve upon its seat.
Figure 6 represents the said air plug partly in section, and partly in elevation,
while Figure 7 is an elevation of the same, but in a position at right angles to that
of Figure 6.
Figure 8 represents the parts of the said air plug or stalk separately, less the
rubber covering, and which view exemplifies how the said plug is made up, of parts,
connected together by sweating or soldering.
Figure 9 represents a section of the air pump connection means, upon the dotted
lines C. D. Figure 1.
Figure 10 shows a like section as Figure 9, but with the coupling ring unsplit
or undivided.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
a is the body or pillar member of the valve, having at its inner end, a foot or
flange a², and an angular collar a³, which latter takes through the plys of the inner
periphery of tyre b. The middle part of the said body has an all-through
hole a', enlarged at its outer end at us, and which latter. constitutes the
valve seat.
Located within the outer part of the hole of the body, is a hollow air plug c,
having a stalk c², pierced at c³, and with a closed end c, and a bulbous junction c
adjacent to a collar c³, having upon the two opposite sides of it, rectangular lugs

page_text: or studs e', adapted to take within the gaps or end sinkings a', of the body part a,.
and by which means, the union of the two said parts is made, and the rubber
covering or valve d, d², encircling the stem c³, and covering the hole c³, and
bulbous part e, is prevented from being worn, cut or otherwise injured, consequent
upon the rotation of the rubber cased parts, as is the case in valves of the ordinary.
construction.
The air plug has an outside screwed tail end c8, whilst the collar part c³, and
terminal end of the body part, is encircled by a union, or inside screwed nut e, which
when screwed home, forces the lugs c', down the gaps a, and makes the necessary
connection, and prevents independent rotation of the air plug.
Taking upon the screwed tail end c³, is a pump connection or coupling, consisting
of an inside screwed end, with all-through bore f³, annularly grooved tail end f
stop collar, annular ring f, and rubber piping f
Instead of the ring f6, being split as in Figure 9, it may be solid as in.
Figure 10.
The air plug is essentially made of two component parts c', c³, (see Figure 8)..
The stalk part c, is made from a short length of solid drawn or other tubing,
with one end inserted within the interior of the bulbous junction c³, and there.
affixed by soldering or by sweating. The lip end of the stalk is then closed,.
by dipping the same into molten solder, or a lip end may be introduced, and
there affixed by solder or otherwise. The side of the stalk is pierced with the:
usual hole ca.
Instead of closing the lip by solder or an introduced end, it may be closed by a
gathering-in tool.
Instead of air plug carrying lugs or studs, its sides may be gapped or other-
wise recessed, wherein or wherewith lugs, studs or extensions on the body or pillar
part take or engage.
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 :-
First In a pneumatic tyre valve, providing or fitting the air plug, of the one.
part, with lugs, studs or extensions which take and engage within gaps, recesses or
depressions made or formed within the body or pillar part, of the other part,.
or lugs or extensions of the second named part, taking within gaps or recesses,.
within the first named part, whereby independent rotation of the said air
plug or first named part, is prevented, and injury to the rubber facing avoided,.
as set forth.
Secondly-In the pump couplings of pneumatic tyres, connecting the air pump
pipe, to the tail end of the pump coupling, by means of a slipped-on and open jointed.
ring as set forth.
:-
Thirdly In the air plug part of pneumatic tyre valves, making the same up of
two parts, a tube part c², and a body part c', united together by sweating or soldering.
as set forth.
Dated this 25th day of June 1892.
RODERI FREDERICK HALL,
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.