Improved Apparatus for Controlling the Pressure in Domestic and other Water Supply Pipes.
Year: 1891

page_text: Date of Application, 15th Aug., 1891
Complete Specification Left, 13th May, 1892-Accepted, 18th June, 1892
PROVISIONAL SPECIFICATION.
Improved Apparatus for Controlling the Pressure in Domestic and
other Water Supply Pipes.
I, WILLIAM Ross, Junior, of 62 Saint Vincent Street, Glasgow, in the
County of Lanark, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention has for its object the provision of improved apparatus to be
applied to water service pipes between the street mains and domestic and other
supply pipes for controlling or relieving the pressure in the latter and thereby
preventing waste of water by leakage and otherwise.
The improved apparatus consists of a tubular valve casing or barrel which is
interposed in the service pipe and placed at right angles to it the water inlet and
outlet through the casing being formed in its sides at points not in line but at some
distance apart. A piston valve composed preferably of a leather washer secured
between shoulders on a spindle is fitted in a bored web formed in the barrel
between the inlet and outlet orifices; and at the ends of the valve spindle similar
valves are secured and fitted to close the ends of the barrel or casing the valves
being of equal diameter to ensure equilibrium of pressure.
In a casing connected to the outlet pipe a diaphragm or like valve is fitted to
carry a spindle on the outer end of which bears a weighted lever centred on an arm
on the casing the opposite end of which lever is connected to the piston valve
spindle. In the operation of the apparatus when water is drawn off from the
supply pipes and pressure thereby relieved the diaphragm valve drops and with it
the weighted end of the lever, the opposite end of the lever rising and lifting the
piston valve out of the bored web in which it is seated to permit the free passage
of water through the valve casing or barrel.
When the water tap is closed and no water drawn from the pipe the water
pressure raises the diaphragm valve against the weight on the lever the opposite
end of the lever being thereby depressed and the valve spindle pushed down until
the central piston valve enters the boxed web and closes the passage through it for
the water.
By suitable adjustment of the weight on the operating lever the extent of
pressure in the service pipe to effect the shutting off of the water supply may be
varied.
Dated this Fourteenth day of August 1891.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improved Apparatus for Controlling the Pressure in Domestic and
other Water Supply Pipes.
I, WILLIAM Ross, Junior, of 62 Saint Vincent Street, Glasgow, in the County
of Lanark, 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 :-
This invention has for its object the provision of improved apparatus to be applied
to water service pipes between the street mains and domestic and other supply pipes
for controlling or relieving the pressure in the latter and thereby preventing waste
of water by leakage and otherwise.

page_text: As represented in vertical section in the accompanying drawing the improved
apparatus consists of a tubular valve casing or barrel A which is interposed in the
service pipe and placed at right angles to it the water inlet B and outlet C through
the casing being formed in its sides at points not in line but at some distance
apart. A piston valve composed preferably of a leather washer D secured
between shoulders e, e on a spindle is fitted in a bored web A' formed in
the barrel A between the inlet and outlet orifices, and at the ends of the valve
spindle E similar valves F, F are secured and fitted to close the ends of the
barrel or casing A the valves being of equal diameter to ensure equilibrium
of pressure.
In a casing G connected to the outlet pipe C a diaphragm H or like valve is
fitted to carry a spindle I on the outer end of which bears a weighted lever J
centred on an arm K on the casing the opposite end of which lever is connected
at to the piston valve spindle E. In the operation of the apparatus when
water is drawn off from the supply pipes and pressure on the outlet end C thereby
relieved the diaphragm valve H drops and with it the weighted end of the
lever J, the opposite end of the lever rising and lifting the piston valve D
out of the bored web A' in which it is seated, to permit the free passage of water
through the valve casing or barrel A. and through the outlet C.
When the water tap is closed and no water drawn from the pipe the water
pressure within the outlet C raises the diaphragm valve H against the weight J¹
on the lever the opposite end of the lever at j being thereby depressed and the valve
spindle E pushed down until the central piston valve D enters the bored web A¹
and closes the passage through it for the water.
By suitable adjustment of the weight J' on the operating lever J the extent of
pressure in the service pipe to effect the shutting off of the water supply may be
varied.
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. The improved apparatus herein before described for controlling the pressure in
domestic and other water supply pipes.
2. In apparatus of the class set forth the equilibrium valve D, F, F constructed
and operated substantially as described.
Dated this Twelfth day of May 1892.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.