AN IMPROVED CONSTRUCTION OF STOPVALVE
Year: 1882

page_text: LETTERS PATENT to William Whiteley of the firm of William Whiteley and
Sons of Lockwood near Huddersfield in the county of York Machine Makers
for an invention of AN IMPROVED CONSTRUCTION OF STOPVALVE
A com-
munication from abroad by Rufus Nutting Pratt of Hartford in the state of
Connecticut United States of America
COMPLETE SPECIFICATION filed by the said William Whiteley at the Office
of the Commissioners of Patents on the 15th March 1882.
WILLIAM WHITELEY of the firm of William Whiteley and Sons of Lockwood
near Huddersfield in the County of York, Machine Makers "AN IMPROVED
CONSTRUCTION OF STOP VALVE" A communication from abroad by Rufus
Nutting Pratt of Hartford in the State of Connecticut United States of
America
This Invention has special reference to that class of valve or tap which is
operated by means of a screw, and the object of my Improvements is to obtain a
perfectly tight joint and prevent breakage through the valve seat, also to arrange
the valve, so that the seating thereof can be reground, when it becomes worn,
without removing it from its place, and also to construct the said valve so as to
have a "straight way" through.
The accompanying Drawings shew a valve constructed according to my Invention,
wherein Fig. 1 is a section thereof, shewing the valve closed; and Fig 2 is another
section shewing it open. A is the shell which contains the parts forming the
valve, the valve seating B being placed by preference at an angle of about 45°.
C is a clapper which is hinged on a pin D passing through the shell from the
outside. E is a rotating disc constituting the part of the valve which rests upon
the valve seat. This disc has a central steni or pin F which passes through an
opening in the clapper C wherein it fits loosely so as to turn freely and have some
play, the upper end of the said pin F being made with a screw thread upon which
is placed the nut G. A slit is made in the upper end of the screwed pin F for
...

page_text: purposes hereinafter explained. The clapper C is secured to the link H the upper
part of which is grooved or milled" to receive a collar I formed at the bottom of
the valve spindle J passing through the stuffing box K. It will be seen that when
the hand wheel L is turned in one direction that the valve will be opened as shewn
in Fig 2, and when it is turned in the opposite direction the valve will be closed as
shewn in Fig 1, and that the downward pressure of the disc E upon the seating B
will produce a perfectly steam, water, or air tight valve. M is a cap which is
screwed into a socket N made in the top of the shell, so that when it is required to
regrind the valve seating, this cap is unscrewed, for the insertion of a screw driver,
which is placed into the slit made in the screwed pin F of the rotating disc,
whereby the said disc is turned backward and forward upon its seating until it is
reground, or the clapper and its connections may be removed, and a proper tool
introduced through the socket N and the valve easily reground, without the
necessity of removing the whole body of the valve from the pipes on which it may
be placed. Although I have placed the valve at an angle of about 45°, it is obvious
that it may be placed vertically, but there is considerable advantage in placing the
said valve as shewn in the Drawings, as the shell A does not require to be taken
off the pipes to repair the valve, but in either case a straight way" through is
obtained.
"
In Figs 3 and 4 the same construction of valve is shewn the means of opening
and closing same being slightly modified, the conical flange I fitting into a
corresponding opening made in the upper end of the clapper C.
Figs 5 and 6 shew the same construction of valve, in this case no stuffing box is
employed, the screwed part of the spindle J fitting into the hollow part P which is
raised or lowered when the hand wheel L is turned round. The part P is secured
to the clapper by a pin R passing through same and through a slot formed in the
clapper as shewn in the Drawings.
It must be understood that the cap M and socket N, need not necessarily be
used, as they do not assist or help on the actual working of the valve, their only
use being to enable the valve to be reground, and to facilitate their manufacture,
therefore I do not confine myself to its use, as the valve could be made without
them as shewn in Fig 7.
Having thus fully described the said Invention as communicated to me by my
foroign correspondent and the manner of performing the same, I wish it to be
understood that I claim
The combination of the rotating disc E, hinged clapper C and vertical spindle J
employed either with or without the moveable plug M substantially as herein
shewn and described.
In witness whereof I the said William Whiteley have hereunto set my
hand and seal this thirteenth day of March in the year of our Lord One
thousand eight hundred and eighty two.
Signed sealed, and delivered by the
within named William Whiteley
in the presence of
A B CROSSLEY
Tasker & Crossley
Patent Agents
Halifax
WILLIAM WHITELEY. (L.S.)