IMPROVEMENTS IN VALVES OR STOP COCKS FOR STEAM, WATER, AND OTHER FLUIDS to be as follows
Year: 1886

page_text: I, GEORGE HENRY KENDALL of Union Street, Huddersfield, Yorkshire Mechanic
do hereby declare the nature of my invention for " IMPROVEMENTS IN VALVES OR
STOP COCKS FOR STEAM, WATER, AND OTHER FLUIDS to be as follows:-
"
My invention has reference to that class of valve or stop cock which is
composed of a round vertical split piston valve caused to slide up and down
against valve facings by means of a screw when opening or closing the thoroughfare
through which the steam or water passes.
As the bottom of the thoroughfare is in a straight line, it frequently happens that
gritty substances and dirt lodge at the bottom of the said passage, so that when
the valve is screwed down and lowered, it rests upon the gritty substances and
dirt, consequently it is not effectually closed but allows a passage of steam or
water, and in addition to the imperfect closing the constant action of the bottom
of the valve upon the gritty matter wears away the parts and makes then uneven
and the valve faulty thereby.
My invention is intended to remedy the above defects and this I accomplish in
the following manner. Instead of the valve being a blank as at present I form an
opening in it equal to the size of the passage or thoroughfare, so that when the
passage is required to be opened for a free passage of water or steam, the opening
in the said valve is brought opposite the thoroughfare, in which case the liquid
passes through the valve instead of under it as at present, and when it is necessary
to stop the passage of liquid a blank part of the valve is brought opposite the
thoroughfare. It will now be seen that if any sediment or dirt lodges on the
bottom surface or thickness of metal forming the opening in the valve, that such
sediment would be carried away with the valve either up or down, but the next
time the opening was brought opposite the passage, the flow of water or steam
would carry it away, and this would happen every time the valve was opened or
closed.
By this means the lodging of sediment in the valve will not now be any
detriment.

page_text: Improvements in Valves or Stop Cocks for Steam, Water, and
other Fluids.
I, GEORGE HENRY KENDALL, of Union Street, Huddersfield, Yorkshire,
Mechanic, do hereby declare the nature of my invention for "IMPROVEMENTS IN
VALVES OR STOP COCKS FOR STEAM, WATER, AND OTHER FLUIDS," and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
My invention has reference to that class of valve or stop cock which is composed
of a round vertical split valve caused to slide up and down against valve facings
by means of a screw when opening or closing the throughfare through which the
steam or water passes.
As the bottom of the through fare is in a straight line it frequently happens
that gritty substances and dirt lodge at the bottom of the said passage, so that
when the valve is screwed down and lowered, it rests upon the gritty substances
and dirt, consequently it is not effectually closed but allows a passage of steam or
water; and in addition to the imperfect closing, the constant action of the bottom
of the valve upon the gritty matter wears away the parts and makes them uneven,
and the valve faulty thereby.
My invention is intended to remedy the above defects and this I accomplish in
the following manner. Instead of the valve being a blank as at present I form an
opening in it equal to the size of the passage or throughfare, so that when the
passage is required to be opened for a free passage of water or steam, the opening in
the said valve is brought opposite the throughfare, in which case the liquid passes
through the valve instead of under it as at present, and when it is necessary to stop
the passage of liquid a blank part of the valve is brought opposite the throughfare.
It will be seen that if any sediment or dirt lodges on the bottom surface or
thickness of metal forming the opening in the valve, that such sediment would be
carried away with the valve either up or down, but the next time the opening was
brought opposite the passage, the flow of water or steam would carry it away, and
this would happen every time the valve was opened or closed.
In order that my invention may be better understood I have annexed the
accompanying sheet of drawings illustrative thereof. Fig. 1 is outside view of the
valve, and Fig. 2 section of saine. A is the outer casing made with a straight way
through from a to b, and B.is the vertical piston valve having a hole or way made
through it from c to d, of the same diameter as the opening a to b. This piston
valve B is split or made in two parts so that when the valve becomes a little worn,
a wedge can be inserted between the two parts or halves of the valve, forcing them
apart and making them fit tightly against the inner faces of the opening through
which it passed. The piston valve is worked up and down by the hand wheel C and
screw D. Fig. 2 shews the valve down and the pin, with the bottom of the hole
in the valve, in a line with the opening a to b, if therefore dirt or sediment rests
on the surface c to d, it is carried up when the valve is closed, but when it is
lowered so as to be open, the sediment would be washed away by the next passage

page_text: of steam or water. In order that the valve may be effectually closed, the
bottom e of the screw D, will enter the taper hole fin the bottom of the hole in
the valve plug and force the two halves of the valve apart, so as to bind tightly
against the sides of the valve casing.
In some cases I do not split the valve, but make it solid as seen in Fig. 3, and
in order to make it tight, I insert thin rubber or "dermatine," rings G and H, in
the valve casing so that they press tightly against the piston valve B. Fig. 3
shews the valve closed.
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 :-
:-
Firstly. The employment of a split valve or a valve composed of two parts,
having a hole therein, and so arranged that when the valve is open the bottom of
the said hole is in a line with the opening in the valve casing so as to get a straight
way through.
Secondly. The method substantially as herein described for carrying away the
dirt and sediment lodging in the valve.
Thirdly. The employment of india rubber or "dermatine" in manner shown
for making valves steam and water tight.
Dated this 18th day of October 1886
GEORGE HENRY KENDALL.