IMPROVEMENTS IN WATER-WASTE PREVENTERS
Year: 1872

page_text: LETTERS PATENT to Frederick George Underhay, of Crawford Passage,
Clerkenwell, in the County of Middlesex, for the Invention of
"IMPROVEMENTS IN WATER-WASTE PREVENTERS."
Sealed the 14th January 1873, and dated the 15th October 1872.
PROVISIONAL SPECIFICATION left by the said Frederick George
Underhay at the Office of the Commissioners of Patents, with his
Petition, on the 15th October 1872.
I, FREDERICK GEORGE UNDERHAY, of Crawford Passage, Clerkenwell,
in the County of Middlesex, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN WATER-WASTE PREVENTERS," to be as
follows:-
This Invention has for its object improvements in water-waste pre-
venters.
In order to supply to a closet or other place a measured quantity of
water I fix inside a cistern a measuring box with a hole in the top for
the water to enter it, and another hole in the bottom to deliver the

page_text: measured quantity of water into a pipe passing out through the bottom
of the cistern, and connected with the pipe leading to a closet, urinal, or
other vessel. Each of the holes in the box is fitted with a valve weighted
sufficiently to cause it to descend on to its seat whenever it is left free
to do so. Within the measuring box is a lever mounted on a fulcrum
intermediate of its length. The two ends of this lever pass through
slots in stems formed on the valves. The lever is weighted at one end,
and near the same end a wire is attached to it which ascends a rising air
pipe fixed on the top of the measuring box. The wire is there connected
with the pull which is employed in drawing water. When the pull is
not acted on, the weight upon the lever within the measuring box lifts
the inlet valve, and the box fills with water. As soon as the pull is
brought into action it lifts the weighted end of the lever, and the inlet
valve by its own weight falls down to its seat, and afterwards the
further motion of the lever causes it to act on the delivery valve, which
it does as soon as the lever comes to the end of the slot in the valve
stem, and then this valve is lifted and the measured quantity of water is
discharged. When the pull is released the outlet valve first falls on to
its seat, and then the weighted lever when nearly at the end of its
stroke lifts the inlet valve.
In some cases I employ with a similar object a small cistern divided
by an upright partition into two compartments. By a ball cock water
is supplied to one compartment, and it passes by a communication below
the bottom of the cistern into the other compartment. The water
ascends by an inlet hole in the bottom of this part of the cistern, which
is also provided with an outlet hole connected by a pipe with the closet
or other place where the measured supply is required. Both of these
holes are closed by valves which are controlled by a weighted rocking
lever worked with a pull, as already described.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 30
filed by the said Frederick George Underhay in the Great Seal
Patent Office on the 15th April 1873.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of October, in the year
of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Frederick George Underhay,
Her special license that I, the said Frederick George Underhay, my
executors, administrators, and assigns, or such others as I, the said
Frederick George Underhay, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN WATER-WASTE PREVENTErs,” upon
the condition (amongst others) that I, the said Frederick George Underhay,
my
executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after
O the date of the said Letters Patent.
5
NOW KNOW YE, that I, the said Frederick George Underhay, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :-—
This Invention has for its object improvements in water-waste pre-
venters.
In order to supply to a closet or other place a measured quantity of
water I fix inside a cistern a measuring box with a hole in the top for
the water to enter it, and another hole in the bottom to deliver the
0 measured quantity of water into a pipe passing out through the bottom
of the cistern, and connected with the pipe leading to a closet, urinal, or
other vessel. Each of the holes in the box is fitted with a valve weighted
sufficiently to cause it to descend on to its seat whenever it is left free
to do so.
Within the measuring box is a lever mounted on a fulcrum
5 intermediate of its length. The two ends of this lever pass through
slots in stems formed on the valves. The lever is weighted at one end,
and near the same end a wire is attached to it which ascends a rising air

page_text: Figure 1 is a longitudinal section of the apparatus as it is arranged to
be fixed within a cistern. a, a, is a portion of the bottom of the cistern;
6 is the measuring box; c is a valve covering an inlet passage in the lid
of the box, it is enclosed beneath a perforated cap; d is another valve
covering an outlet passage in the bottom of the box; c is a pipe leading
to the closet pan, urinal, or other receiving vessel; is a lever turning
upon a fulcrum f' fixed within the box b, its ends pass through the
slotted stems of the valves c and d, as is shown; 7 is a weight upon the
lever causing it to preponderate at one end; h is a rod jointed to the
lever, and connected also with the wire by which the apparatus is
worked from the pull of the closet or otherwise. This wire ascends the
air pipe i.

page_text: C
Figure 2 is a longitudinal section, and Figure 3 a transverse section
of an apparatus having its own cistern combined with it, so that it may
not require to be fixed within a large cistern, as is the case with the
apparatus shewn at Figure 1. k is the supply compartment, which is kept
filled by means of the ball cock m; n is the water passage into the
measuring box ; and o is a valve corresponding with the valve e in
Figure 1, but within the box 6 in place of on the top. In Figures 2
and 3 the water is discharged not at once and entirely into the descending
pipe e, but partly into a chamber p in which the funnel 9 stands. The
water passing the valve d only partly enters the mouth of this funnel,
and flows at once down the pipe e, and some of the water which escapes
the mouth of the funnel enters the chamber p, from which it runs slowly
out by the small hole q' in the side of the funnel. In this way the
delivery of a small quantity of water for trapping after the closet valve
is closed is ensured.
is the air pipe of the trapping chamber. The
trapping chamber is equally applicable to the arrangement shown at
Figure 1.
What I claim is, the construction of water-waste preventers sub-
stantially as described.
In witness whereof, I, the said Frederick George Underhay, have
hercunto set my hand and seal, this Tenth day of April, in
the year of our Lord One thousand eight hundred and-seventy-
three.