Combined Charging and Relief Valves for Inflatable Articles and other like purposes.
Year: 1895

page_text: COMPLETE SPECIFICATION.
Combined Charging and Relief Valves for Inflatable Articles and
other like purposes.
1, WILLIAM JEFFERS CRAIG, Junior, of 53 Earlham Grove, Forest Gate,
London, Engineer, 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 :-
It is an apparatus for the regulation and automatic maintenance of the condition.
and pressure within hollow or tubular articles, tubes, tyres, hubs, saddles, cushions,.
bags, rubber or elastic goods or other apparatus, machines or fittings, arranged
with cavity or receptacles for filling, charging or distending, or under or subject to.
internal pressure or distention or inflation with air, gas, or fluids, and combined
with filling, charging or distending apparatus and connections, and for operating
together or separately and for other purposes.
In carrying out my invention I provide two valves in a casing with attachment
and connecting arrangements. One of these valves provides for preventing the
generation or rise of pressure, also for discharging suddenly produced or other
excess of pressure, and its reduction to normal or desired conditions automatically
in any hollow and charged distended or inflatable article or apparatus, and so
charged or distended by any means, and the other valve for charging and
distending or inflating purposes, and connections, and the like in each case, and
for operating in combination with each other, also for disengaging for operating
separately.
I describe my invention as follows:-
The regulator valve, A, is of the direct-acting-lifting type provided with a
tubular spindle, B, and kept on its seat, C, in any position, by a spring, D, coiled
round the spindle. This valve is enclosed within a protecting case, E, of cylindrical
form with the valve seat arranged internally, and above it a space sufficient to
accommodate the spring between the spindle and inside of case, and also to afford
a free passage for exhaust from the valve on its way to discharge through
perforations, F, in case into atmosphere. Externally, the case is arranged at upper
end for jointing tight, and at lower end is provided with a suitable Hange, G, or
other attachment for connection, from which the case extends straight and parallel
throughout, and is screwed for this entire length to admit of running down the
nut, H, to position, for assisting to secure attachment joint. The top of case is
closed by a screw-cover, I, with milled (or spanner) edge for operating the
compression or relief of the spring in adjustment of the valve to any condition or
desired load, and this adjustment is further secured by a check-nut, K, engaging the
cover. The inside of the cover is only screwed for part of its length to leave
sufficient clearance for the perforations in the ease, which are thus overlapped by
the cover for protection while freely allowing exhaust to pass out if desired, and
otherwise also admitting of being screwed down over and entirely closing the
perforations, thus disengaging the combination for operating separately and
duplicating the valve action when necessary for any purpose.
A cap-nut, L, with milled edge, finishing the upper part, protects that part of
the valve spindle projecting through the cover which provides a connection for
charging or inflating apparatus or purposes.
Combined with this arrangement, the tubular valve spindle provides a passage.

page_text: and means for charging inflating or distending purposes, for which it is fitted with
a non-return valve, M, at its lower end.
The cap-nut, attachment nut, and screw-cover are all secured joint-tight with
rubber, or other suitable material, and the valves are of similar material or faced
with same.
The mode of operation is as follows:-
On the regulator valve being placed in position of contact with the charge, any
excess or increase of pressure of same over the valve adjustment or load, lifts the
valve and escapes into the case, and so through the perforations into atmosphere
automatically, thus reducing the pressure to that of the valve adjustment on
equalizing which, the valve closes instantly in any position, and remains so, and
ready for further duty.
The charging or inflating process is effected by removal of the cap-nut on upper
end of spindle, and connection of the charging or inflating apparatus thereto, thus
admitting of charge passing direct through the tubular spindle, and the lip-valve
at its lower end, into the containing receptacle, and is confined therein by the non-
return action of this valve. The process of charging or inflating can thus be
proceeded with uninterruptedly until completed, and the desired distention attained,
and same adjusted or varied, at will by the regulator valve, and this during the
process of charging or inflating.
The connecting attachments being independently arranged, are not disturbed by,
during, or for any purpose of charging or dis-charging.
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 :-
:―
First. An apparatus whereby the filling charging inflating or distention of
hollow and inflatable articles, and the like, can be adjusted to any normal, desired,
or working condition, pressure or duty.
Second. The arrangement in combination, of the valves in the apparatus.
Third. The separate action of either of the valves in the apparatus, independently
of the other.
Dated this 6th day of May 1895.
WILLIAM JEFFERS CRAIG.