Improvements in Tank Outlet Valves.
Year: 1899

page_text: Date of Application, 2nd Nov., 1899-Accepted, 16th Dec., 1899
COMPLETE SPECIFICATION
Improvements in Tank Outlet Valves.
We, CORNLLA BIRKLRY, of 65, Suffield Street, Hartford, in the County of
Hartford and State of Connecticut, Manufacturei. and 1лOMAS STANDISHI, of
65, Sufheld Street, Hartford, in the County of Hartford and State of Connec-
ticut, Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertamed
in and by the following statement.-
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This invention relates to a slow closing outlet valve for water closet flushing
tanks.
The object of the invention is the production of a simple, durable and reliable
valve which opens widely and acts 60 slowly in closing that a large volume
of water can flow noiselessly from the tank in which the valve is located for
Hushing and thoroughly cleaning the closet bowl, and then, just before the
valve shuts tightly, a sufficient quantity of water can flow to hll the bowl to
the desired level
The embodiment of the invention illustrated in the accompanying diawings
has a valve seat, a cup that is filled with water when the tank is filled, supported
above the seat, a float movable up and down in the cup as the level of the water
therein changes, a valve movable toward and from the seat. a catch aanged
between a part of the valve and a part of the float in such manner that these
parts become connected when the valve is lifted and move downwardly together,
and a tup which at the proper time causes the disengagement of the catch and
the release of the valve from the float, leaving the former fiee to gravitate to
its seat and the latter to be raised to its normal position
Fig 1 of the views shows a plan of this outlet valve Fig 2 shows a side
elevation of the valve in its closed position Fig 3 shows a vertical section
taken on the plane indicated by the dotted line in Fig 1, with the valve
open
And Fig 4 shows au enlarged view of the upper ends of the tubulai
valve shank, tubulai guide and tubular float stem
5
The valve seat, 1. is adapted to be secured by the usual means to the bottom
of any ordinary water closet flushing tank provided with the customary ball
cock A cup, 2, is supported a suitable distance above the valve seat by lega. ".
This cup can be formed to the most convenient shape of copper, and it 18 po-
vided with an outlet, 4, the capacity of which may be regulated by the screw,
A tube, 6, 13 secured to the inside of the cup concentric with the outlet through
the valve seat, and guided by this tube is the tubular shank, 7, of the valve, 8
This shank loosely fits the axed tube, 6, and at the upper end is provided with
a cross bar, 9, and a stud, 10, for the connection of the valve litting means
Loosely held by the stud at the upper end of the tubulai valve shank is a per-
forated metal disk or cap, 11. which rests upon and closes the opening though
the shank when the valve is lifted and also when the valve 18 descending
Pivoted between ears, 12, projecting from one side of the
catch pawl, 13, and a pawl lever, 14, that engages the pawl.
valve shank 18 a
This lover has a

page_text: finger, 15, that extends through a slot in a tipping post, 16, which, when the
set sciew, 17, is loosened, may be adjusted vertically
Loosely fitting the outside of the fixed cup tube, 6, 18 the tubular stem, 18,
that is attached to the float, 19, arranged to 11se and fall as the level of the
water in the cup vanes The float stem, 18, 18 provided with a catch shoulder, 20,
and with overflow perforations, 21 A slot, 22, 18 made through the float stem
so that its end will engage with a lug, 23, projecting from the cup tube, b,
for limiting the upward movement of the float, and a slot, 24, is made through
the float stem and through the cup tube so that the valve can move downwardly
when the float settles in the cup
As the outlet of the cup 18 very small water will flow through it quite slowly.
The parts are, however, so proportioned that at the time the desired quantity
of water has flowed from the tank for properly flushing the closet, the finger
on the pawl level will engage the end of the slot in the tipping post and be
held in such manner that further lowering of the float causes the catch pawl
to be disengaged from the catch shoulder. When the catch is released, the valve
18 free to drop to its seat and close the outlet so the tank will again fill with
water
The outlet of the cup 18 60 adjusted that the float is not permitted to settle
down sufficiently for the pawl to become disengaged from the shoulder until
nearly all of the water has flowed from the tank for flushing the closet The
tipping post is adjusted to release the pawl from the shoulder and allow the
valve to drop to its seat only after the main iush has ceased and a sufficient
quantity of water has followed to fill the closet bowl to its normal capacity.
With this arrangement the valve 18 held up and slowly lowered almost to
its seat by the float and then, atter the rush and suction have ceased and a
sufhcient amount of water has flowed to provide a suitable after wash, the valve
18 allowed to drop to its seat by gravity
By adjusting the area of the outlet from the cup, the speed of descending of
the float and valve is determined, and by regulating the height of the tipping
post the distance of drop of the valve 18 fixed
The stem of the float when elevated holds the cap lifted away from the top
of the tubulai valve shank so that when the water reaches the top of the valve
shank it will escape through the valve shank and not overflow the tank When
the valve is lifted and water begins to flow out, the cap is raised by the end
of the valve shank from the float steni so as to close the opening through the
valve and prevent suction of an though the valve As the float is elevated
by the inflowing water after the valve is shut, the cap is again aised by the
float stem to open the overflow through the valve shank
This outlet valve is particularly adapted for a low down closet, that 18, a
closet having a tank but little above the top of the bowl, for a very large supply
of water can be quickly emptied from the tank in which this valve is placed
into the bowl With the outlet from the cup conectly adjusted, this valve
permits a sufficient flow of water to the ordinar siphon wash-down closet to
cause three distinct siphons from the bowls at each emptying of the tank and
then fills the bowls piopeily with an after wash The closing by the cap of
the opening through the valve when the water is passing out from the tank
prevents air from being drawn down and causing a noise, and as the outlet
is large and the valve is held above the suction until most of the water is run
out from the tank, no noise results from the suction
Having now particularly described and ascertamed the nature of our said
invention and in what manner the same is to be performed, we declare what
we claim is:-
1 A tank outlet valve having a cup with a restricted outlet, a float within
the cup, a vertically movable valve, a catch aanged to engage a part of the
float and a part of the valve when the latter is lifted, in such manner that the

page_text: float and valve settle downwardly together as water flows from the cup through
the restricted outlet, and a tip foi disengaging the catch and releasing the
valve from the float as the valve neais its seat
2 A tank outlet valve having a cup with a restricted outlet, an upwardly
extending supporting tube, a float within the cup having a tubular stem sui-
rounding the supporting tube, a vertically movable valve having a tubulai
shank within the supporting tube, a catch shoulder boine by the float stem, a
catch pawl borne by the valve shank m position to engage the catch shouldeı
when the valve is lifted, in such manner that the float and valve settle down-
wardly together as water flows from the cup through the restricted outlet, and
a trip disengaging the catch pawl from the catch shoulder as the valve neais
its seat
Dated at Hartford Conn the 16th day of October 1899.
CORNELIUS BIRKERY.
THOMAS STANDISH.
D Young & Co,
11 and 12, Southampton Buildings, London, WC,
Agents for the Applicants.