IMPROVEMENTS RELATING TO PUMP AND OTHER VALVES, AND TO THE SECURING OF THE SAME AND PARTS CONNECTED THEREWITH IN THEIR CHAMBERS OR BOXES
Year: 1876

page_text: PROVISIONAL SPECIFICATION left by Edward Wilson at the Office of the
Commissioners of Patents on the 22nd March 1876.
EDWARD WILSON, of Exeter, in the County of Devon, Engineer. "IMPROVEMENTS
RELATING TO PUMP AND OTHER VALVES, AND TO THE SECURING OF THE SAME AND
PARTS CONNECTED THEREWITH IN THEIR CHAMBERS OR BOXES."
These improvements relate to pump and other valves and their adjuncts, and are
more especially applicable to the class of valves known as Perreux valves, which
are formed of vulcanized or mineralized india-rubber, and are so shaped and con-
structed that when properly arranged in a valve box in connection with a pump
they will open and close freely by the action of the same.
The said Invention is also applicable to clack valves for pumps and other
apparatus.
It is very desirable to have convenient and simple means for securing theso
valves in their valve chambers or boxes in such a manner that they are not liable
to be displaced by the action of the fluid passing through them, and at the same
time to have the means of ready access to them for repairing or removing and
replacing them.
According to my Invention when applying the same to the aforesaid Perreux
valves I provide in the valve chamber or box a cylinder or cylinders with two or
more valves in each cylinder, the said valves being properly arranged in relation to
the suction and delivery apertures. The flange of the valve at one end of the
cylinder rests on the outside of a flange or rim on a seating fitted therein, and the
lips of the valve extend inward. At the other end of the cylinder the flange of the
valve rests upon the inside surface of a flange or rim on the cylinder.
On the flange of the first-named valve 1 place a metal ring, which has a cross
bar at the back, and outside or over the said ring is a cross stay formed or secured
inside the valve chamber. Through this stay passes a hand screw, whose inner end
or point bears against the cross bar of the said metal ring, so that by turning this
hand screw the said metal ring will be compressed upon the flange of the valve,
and will bind and secure the same firmly on its seating. The latter rests on a
cylindrical distance piece, which bears against the flange of the other valve, and
by means of this distance piece the pressure of the said screw is transmitted to the
latter valve, and makes the same fast on the aforesaid flange or rim.
The first or upper valves in the arrangement above described are the suction
valves, and the second or lower valves are the discharge or delivery valves. The
ports leading to the cylinder ends are between the said valves.

page_text: The valve chamber has at the end occupied by the suction valves and pipe, and
which is termed the suction chamber, a cover which does not require bolting or
screwing upon the said chamber being made fast by the suction. The said cover is
fitted within a flange or rim, and is made air-tight by india-rubber or other
suitable packing. It is obvious that this cover may be readily removed and
replaced, and permits very easy access to the valve chamber.
The said Invention is applied to clack valves in the same manner, but these
valves will in some instances require to be provided with a balance weight or
spring to keep them up to their seating.
I also provide apparatus to be used in combination with the above or other valves
for preventing the choking or clogging of pumps by the entrance of solid bodies or
materials. For this purpose I fix in the suction pipe a box provided with a screen
of perforated metal, or the like, which prevents the passage of any solid materials.
This box is provided with a cover applied and held in place by the suction, as above
described.