IMPROVEMENTS IN LET OFF VALVES FOR VATS AND CISTERNS
Year: 1885

page_text: I, JOHN HAIGH HEATON of Bridge Croft Dye Works, Milnsbridge near
Huddersfield, in the county of York, Dyer do hereby declare the nature of my
invention for IMPROVEMENTS IN LET OFF VALVES FOR VATS AND CISTERNS to be
as follows:-
C
This invention relates to those valves which are used for letting off the water or
other contents of vats and cisterns. These vessels are now usually closed by à
wooden plug or by a brass valve upon a turned seat. The former of these is but a
rude contrivance and the latter is uncertain in operation as it is liable at any time
to be rendered not water tight by any bit of dyewood or other material resting
upon the face of the valve and preventing its closing. In addition to this it is
rarely that valves are attached so as thoroughly to allow the whole contents of the
vessels to escape. I propose to obviate these defects by my invention, which is as
follows: I attach my valve to the cistern or other vessel by means of a pipe shaped
Like a shallow letter, U, one leg of which is slightly longer than the other, and
which longer leg it is attached to the under side or lowest portion of the cistern
or vat
The shorter leg which has a broad flange at its extremity I close by means of a
circular iron plate of the same size as the flange and which plate is actuated by
means of a screw working through a collar between two uprights, in the usual
manner, or other suitable mechanism. The surface of this plate which rests upon
the flange is covered by a disc of indianrubber or other suitable material, and this
when pressed up into contact with the flange by means of the screw as aforesaid,
covers the mouth of the pipe and the surrounding flange and being forced into
close contact prevents the escape of the liquids contained in the vat. By these
means any small particle of wood or foreign matter will not be able to prevent the
valve being closed watertight. As the valve is at a lower level than the bottom of
the cistern all the water contained in it can escape.
"

page_text: Improvements in Let-off Valves for Vats and Cisterns.
I, JOHN HAIGH HEATON Bridge Croft Dyeworks Milnsbridge nr Huddersfield
do hereby declare the nature of my invention. for "IMPROVEMENTS IN LET OFF
VALVES FOR VATS AND CISTERNS and in what manner the same is to be
performed, to be particularly described and ascertained-in and by the following
statement :-
This invention relates to those valves which are used for letting off the water or
other contents of vats or cisterns. This is usually effected at present by means of
a wooden plug, or by means of a brass valve upon a turned seat attached to a pipe
at the lower part of the cistern. The former is but a rude contrivance, and the
latter is uncertain in operation, as the valve is liable to be rendered not watertight
and to allow the contents of the cistern to escape by any bit of dyewood or other
material resting upon the face of the valve and thus preventing its closing. In
addition to this it is rarely that valves are attached in such a manner as to allow
the whole contents of the vessel to escape.
I propose to obviate these defects by my invention which may be described as
follows:
To the lower part of the vat or cistern I attach a pipe shaped like a shallow
letter U, one leg of which is rather longer than the other, and it is by the longer
leg that it is attached to the vat or cistern. The shorter leg is furnished at its
extremity with a broad flange which forms part of the valve. Upon this flange
rests a flat circular iron plate of the same size as the flange, and which plate is
actuated, and may be forced into close contact with the flange by means of a screw
and hand wheel upon its upper surface, working through a collar between two
uprights in the usual manner, or by other suitable mechanism. The surface of this
plate which is next to the flange is covered with india-rubber or other suitable
material, which when pressed into close contact with the flange will form a water-
tight valve, covering as it does both the opening of the pipe and also the broad
flange which surrounds it.
Any small particle of dyewood or other foreign matter will thus be imbedded in
the india rubber or other material, but will not be able to prevent the valve being
closed so as to be watertight.
In order that the invention may be fully understood I append hereunto a
drawing of my improved valve, in which A represents the vat or cistern, BC the
pipe; which is attached to A by the longer leg B, with a broad flange around the
opening D at its other extremity. At E is shewn the iron plate, and at F
the india-rubber covering of the same, which closes the outlet of the pipe and
renders the opening watertight when forced into contact with the surface of the
flange surrounding the opening, by means of the screw and hand-wheel G.

page_text: 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 construction of a let-off valve for vats or cisterns of such a nature that it is
closed and rendered watertight by means of a disc of yielding material such as
indiarubber, when pressed into contact with a flat surface surrounding the mouth
of the waste pipe of any vessel containing liquid, substantially as above described,
and which Invention I claim will be of great public utility.
JOHN HAIGH HEATON.
Per T. K. Mellor, his Agent.