Improvements in Gas Regulating Valves for Pressure Gauges.
Year: 1896

page_text: Date of Application, 31st Mar., 1896
Complete Specification Left, 24th Dec., 1896-Accepted, 6th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements in Gas Regulating Valves for Pressure Gauges.
I, JOHN HUTCHENS GARTRELL, of 47 Chapel Street, Penzance, in the County
of Cornwall, Surgeon Dentist, do hereby declare the nature of this invention to be
as follows:-
My invention relates to improvements in gas regulating valves for pressure
gauges, which is intended to be used in conjunction with a part of the apparatus
described and illustrated in my Specification No. 9985 of 1892.
The object of this invention is that the regulating valve can be turned to the
right or left without straining the Bourdon tube.
In carrying my invention into practice I insert a cross pin or carrier in the end
of the central spindle which carries the index hand of the gauge. At the back
of the gauge I fix a valve casing and inside the said valve casing I insert a
semicircular or segmental valve, and in the aforesaid valve I place loosely a small
cup with a slot, and at the end of this. cup I cut a cross slot for the purpose of
engaging with the cross pin or carrier at the end of the spindle. The valve and
cup is held in position by a cover fixed to the valve casing.
In an alternate pattern valve I construct the case, with a port hole in the inside
of the base this said port hole is connected with the outlet tube. On the central
spindle I place loosely a flat disc valve and a fixed carrier the said valve having a
portion cut away in order to open the aforesaid port hole. On the valve I fix two
pins at a suitable distance apart for the purpose of the carrier on the spindle to
engage with the valve between the pins. The carrier and valve are pressed
against the case facing to form a gas tight joint by a suitable spring fixed inside
the casing, and acting against the pointed end of the central spindle.
Dated this 31st day of March 1896
J. P. BAYLY,
18 Fulham Place, London, W., Agent for the Applicant.
Improvements in Gas Regulating valves for Pressure
rauges.
I, JOHN HUTCHENS GARTRELL, of 47 Chapel Street, Penzance, in the County
of Cornwall, Surgeon Dentist, 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:-
My invention relates to improvements in gas regulating valves for pressure
gauges, which is intended to be used in conjunction with a part of a pressure gauge
of the apparatus described and illustrated in my Specification No. 9985, of 1892.
The object of this invention is that the regulating valve can be turned to the
right or left without straining the Bourdon tube.

page_text: And in order that my invention may be thoroughly understood I now proceed
to describe the accompanying drawing thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a view of the valve and carrier in the inside of the case of Fig. 3.
Fig. 2, is a plan of the cover."
Fig. 3, is a longitudinal section of the apparatus.
In carrying my invention into practice I construct as shown in Figs. 1, 2, and 3,
the case j, with a port hole k in the inside of the base this said port hole kis
connected with the outlet tube m. On the central spindle n I place loosely a flat
disc valve o and a fixed carrier p the said valve o having a portion cut away in
order to open the aforesaid port hole k. On the valve o I fix two pins g at a
suitable distance apart for the purpose of the carrier p on the spindle n to engage
with the valve o between the pins q. The carrier and valve are pressed against
the case facing to form a gas tight joint by a suitable spring r fixed inside the
casing, and acting against the pointed end of the central spindle. The inlet
tube u is attached to the cover t and the said cover t is screwed in the case j. The
valve o may be turned or set to cover or open the port hole k.
The spindle n is connected to or is a part of the index, which projects into the
chamber through a packed neck which fits into the back of the gauge case, and a
plate upon the spindle n forms a valve o to close the outlet port k when a certain
pressure is attained.
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. In gas regulating valves for pressure gauges, the combination of the valve
casing port hole k base I central spindle n flat disc valve o with two pins to
engage with the fixed carrier p and pointed end s spring with the cover t and
inlet tube u and outlet tube m, substantially as herein described and according to
the accompanying drawing.
2. In gas regulating valves for pressure gauges, the combination of the various
parts substantially as described in the above specification for the purpose specified.
Dated this 24th day of December 1896.
J. P. BAYLY,
18 Fulham Place, London, W., Agent for the Applicant.