IMPROVEMENTS IN WATER SERVICE VALVES OF THE WASTE PREVENTING KIND
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I ANDREW SWEET of 102 Hampstead Road in the Parish of St Pancras and
County of Middlesex Iron-Monger do hereby declare the nature of my Invention
for IMPROVEMENTS IN WATER SERVICE VALVES OF THE WASTE PREVENTING KIND
to be as follows:-
An arrangement in valves of the diaphragm kind of a water way through which
is transferred the pressure from the inlet to the upper side such water way being
so placed that a cone screen can be used for regulating the flow, this acts in con-
junction with an air chamber having a long stuffing box at the top, in which moves
a hollow actuating rod having at its bottom end a seating piece and above the
seating a small hole, so placed that when the rod is at rest or down, the compressed
air forces a portion of water up the rod, into the outlet of the valve.

page_text: I ANDREW SWEET of 102 Hampstead Road in the Parish of St Pancras & County
of Middlesex, Iron Monger do hereby declare the nature of my Invention for
IMPROVEMENTS IN VALVES OF THE WASTE PREVENTING KIND and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement in writing, reference being had to the drawing enclosed
with the provisional specification the principle being in this instance applied to an
underseat closet valve, in the drawing referred to A is the inlet B the outlet E the
elastic diaphragm C the inlet from the pressure to the upper side of the diaphragm F
a cone regulating screw G the air chamber H the long stuffing box J the hollow
actuating rod with its seating of soft rubber K. L is the small hole in the actuating
rod above.the seating piece with outlet as shown by the arrows through which the
water is forced into the outlet through the small pipe N which may have in it a
regulating cock or screw.
The action is as follows in raising the actuating rod the pressure from inlet A
forces the water from the compartment D into the upper chamber G. Should the
rod be detained up; in a given time determined by the size of the passage C the
water from the pressure side will rise until the air is compressed to balance it, when
the valve closes. Should the actuating rod be let down on the seat K before this
takes place the water from the pressure side will be confined to the chamber D
which on becoming fully charged will close the valve, the rod being down the com-
pressed air is relieved from the water pressure from inlet and therefore throws the
water from the chamber G through the pipe N into the closet pan, thus preparing
the valve for the next flush on the actuating rod being raised the object being to
give a sanitary flush to a closet whatever time the handle or actuating rod
retained up I would here remark that although I have fully explained how the
principle can be applied to a self-closing valve, yet it is evidently capable of
modification.
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 :-
The utilization of compressed air as a factor in opening and closing valves
substantialy as expressed herein and applied to under seat valves and check
cisterns, although it is evident modifications may be made in adapting to certain
requirements.
T
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