Improvements in Thermostatic Valves for Regulating the Flow of Fluids.
Year: 1893

page_text: Date of Application, 26th June, 1893
Complete Specification Left, 24th Mar., 1894-Accepted, 19th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Thermostatic Valves for Regulating the Flow of
Fluids.
1, SAMUEL PUPLETT of 47 Victoria Street Westminster S.W. Engineer do
hereby declare the nature of this invention to be as follows:-
My invention relates to valves for use in apparatus in which a fine adjustment
of the fluid in varying quantities is required, as in ice making and refrigerating
apparatus for regulating the flow of the liquefied gas into the refrigerator. The
valves or cocks hitherto employed for that purpose are either operated by hand or
mechanically moved. By my invention the valve is automatic and is opened and
closed by the expansion and contraction of a fluid due to the rise and fall of
temperature. According to my invention the valve may be of glass, porcelain,
earthenware or any suitable metal-cylindrical in form and of equilibrium type
enclosed in a casing sealed with a fluid so that a stuffing box is dispensed with.
Dated this 24th day of June 1893.
SAMUEL PUPLETT.
COMPLETE SPECIFICATION.
Improvements in Thermostatic Valves for Regulating the Flow of
Fluids.
SAMUEL PUPLETT 47 Victoria Street Westminster S. W. 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:-
My invention relates to valves for use in apparatus in which a fine adjustment
of the fluid in varying quantities is required as in ice making and refrigerating
apparatus for regulating the flow of the liquefied gas into the refrigerator. The
valves or cocks hitherto employed for that purpose are either operated by hand or
mechanically moved. By my invention the valve is automatic aud is opened and
closed by the expansion and contraction of a fluid due to the rise and fall of
temperature. According to my invention the valve may be of glass porcelain
earthenware or any suitable metal-cylindrical in form and of equilibrium type
enclosed in a casing sealed with a fluid so that a stuffing box is dispensed with.
For the purposes named I employ valves constructed in the manner hereinafter
described and for that purpose I refer to the accompanying drawings in which like
letters of reference indicate corresponding parts.
Fig. 1 is a longitudinal section of one form of the valve.
Fig. 2 is a side elevation of the same.
Fig. 3 is a longitudinal section of another form of the valve.
Fig. 4 is a longitudinal section of a third form of the valve.
In carrying out my invention the case, or body of the valve A may be of any
suitable material, and either cylindrical or rectangular in shape. B is a passage
formed through the centre, C is a pipe or passage connecting with both top and
bottom of the valve, D is the inlet, E the outlet, F the reservoir which may be of
any convenient form, closed at one end by the plug G and containing a fluid which
readily expands or contracts according to the variations of the temperature,
mercury for example. I is the valve of cylindrical form, reduced in diameter in

page_text: the centre to form an annuļ
the top of the passage B.
space I which is connected by the passage N, with
Tare ports. M is a vent closed by the plug M.
of valve, having a seat K the valve I being packed
aled with glycerine mercury, or other suitable liquid.
the liquid seal.
Fig. 3 shows another fo
with a cup packing P, and
O is a nozzle passing throug.
Fig. 4 shows a valve with a moveable seat Q. R is the annular chamber
forming the inlet, provided with three or more ports J. R' is the outlet chamber.
In the operation of my invention as applied to a refrigerating machine, the fluid
refrigerant enters the valve at D passing up the passage N, filling the space B,
and through the annular space 1 and ports J', passes into the refrigerator where
it is expanded; as the temperature falls, the fluid contained in the reservoir F
contracts, causing the valve I to fall thus closing the outlet ports J' and reducing
the quantity of the liquid passing through the valve, as the mercury in the
chamber F continues to contract the valve I follows it until all the ports J¹ are
closed and the flow of the refrigerant is shut off. When the temperature rises,
the mercury expands, lifts the valves I and re-opens the ports J. By means
of the passage C, pressure is admitted both to the top and bottom of the valve I,
thus maintaining it in equilibrium.
From the foregoing description it will be obvious that the action of the valve
can be reversed, and the valve used equally well for heating purposes.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. Apparatus for regulating the flow of fluids, automatically actuated by the
rise and fall of temperature, substantially as described.
2. In apparatus for regulating the flow of fluids, the use of an equilibrium valve
without stuffing box, enclosed in a casing sealed by a fluid, and automatically
operated by the expansion and contraction of the sealing fluid.
Dated this 22nd day of March 1894.
SAM. PUPLETT.