IMPROVEMENTS IN FLOAT VALVES FOR CISTERNS
Year: 1877

page_text: LETTERS PATENT to Edward Tyer, of No. 4, Old Street, Finsbury, in the
County of Middlesex, for the Invention of "IMPROVEMENTS IN FLOAT VALVES
FOR CISTERNS."
Sealed the 22nd September 1877, and dated the 1st August 1877.
"
PROVISIONAL SPECIFICATION left by the said Edward Tyer at the Office of
the Commissioners of Patents on the 1st August 1877.
EDWARD TYER, of No. 4, Old Street, Finsbury, in the County of Middlesex.
IMPROVEMENTS IN FLOAT VALVES FOR CISTERNS."
My Invention relates to the construction of a self-acting valve worked by a float
for the supply of a cistern from a water main or service pipe, such valve being
closed by the ascent of its float when the cistern to which it is applied is sufficiently
filled. On the nozzle of the service pipe I mount a lever carrying a float as for an
ordinary ball-cock. In a cup-shaped recess formed in this lever immediately facing
the mouth of the service pipe I place a ball of caoutchouc or other suitable material,
of diameter somewhat greater than the mouth of the pipe, so that when the float
rises with its lever the caoutchouc ball is pressed against the mouth of the pipe, and
closes it. When by frequent use the one part of the ball's surface becomes worn or
unequal it can be turned round in its recess, so as to present a fresh portion of its
surface to the pipe's mouth.
The mouth of the pipe may be made of rectangular shape instead of round, a
cylinder instead of a ball being in that case employed as the valve to close it.
The mouth of the pipe may be provided with a shield to direct the issuing water as
required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edward Tyer in the Great Seal Patent Office on the 31st January
1878.
EDWARD TYER, of No. 4, Old Street, Finsbury, in the County of Middlesex.
"IMPROVEMENTS IN FLOAT VALVES FOR CISTERNS."
-
My Invention relates to the construction of a self-acting valve worked by a float
for the supply of a cistern from a water main or service pipe, such valve being closed
by the ascent of its float when the cistern to which it is applied is sufficiently filled.
On the nozzle of the service pipe I mount a lever carrying a float as for an ordinary
ball-cock. In a cup-shaped recess formed in this lever immediately facing the mouth
of the service pipe I place a ball of caoutchouc or other suitable material, of diameter
somewhat greater than the mouth of the pipe, so that when the float rises with its
lever the caoutchouc ball is pressed against the mouth of the pipe, and closes it.
When by frequent use the one part of the ball's surface becomes worn or unequal it
can be turned round in its recess, so as to present a fresh portion of its surface to
the pipe's mouth.
The mouth of the pipe may be made of rectangular shape instead of round, a
cylinder instead of a ball being in that case employed as the valve to close it.
The mouth of the pipe may be provided with a shield to direct the issuing water as
required.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side view of a float valve according to my Invention; Fig. 2 is a
section through the nozzle of the supply pipe; and Fig. 3 is a plan of the seating
for the ball valve.
A is the supply pipe, which is made with a nozzle a within a projecting guard
lip a to this lip is hinged the lever B, carrying the float ball b. In the lever at bi
is formed the cup-shaped recess, in which is placed the ball C of caoutchouc or similar
material, which, when the float b rises, is pressed against the nozzle a, closing it.
When the float b descends, as shewn in Fig. 1, the ball C leaves the nozzle a open
for the issue of the water, which is prevented from splashing off laterally by the
guard lip a¹.
Instead of using a ball C to operate as a valve a cylinder D of like material may
be employed, as shown in section at Fig. 4, and in part plan, Fig. 5, the nozzle a²
being in this case made of rectangular shape.
Having thus described the nature of my said Invention, and in what manner the
same is to be performed, I claim, the use for float valves of a ball or cylinder of
caoutchouc or other elastic material seated freely in a recess in the float lever,
substantially as and for the purpose herein set forth.
In witness whereof, I, the said Edward Tyer, have hereunto set my hand and
seal, this Sixteenth day of January, in the year of our Lord One thousand
eight hundred and seventy-eight.
EDWARD TYEK. (L.S.)