IMPROVEMENTS IN PUMP PISTONS AND VALVES
Year: 1873

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, Doctor of Laws, for the
Invention of " IMPROVEMENTS IN PUMP PISTONS AND VALVES."-A com-
munication from abroad by Iddo Kimball Harwood, Ship Master,
and Wilson Newcomb, Mechanic, both of Baltimore, Maryland,
United States of America.
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 15th March 1873, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
HASELTINE, of the "International Patent Office," Southampton Build-
ings, London, Doctor of Laws, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS
IN PUMP PISTONS AND VALVES," and have petitioned Her Majesty to grant

page_text: unto me, my executors, administrators, and assigns, Her Royal Letters
Patent for the same, and have made solemn Declaration that it has
been communicated to me from abroad by Iddo Kimball Harwood,
Ship Master, and Wilson Newcomb, Mechanic, both of Baltimore,
Maryland, United States of America.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and seal, fully
describes and ascertains the nature of the said Invention, and in what
manner the same is to be performed in and by the following statement,
reference being had to the accompanying Drawing forming a part of
this Specification :-
This Invention relates to pumps in which a reciprocating valve piston
is employed, and the said Invention consists in the combination with
the valve plunger or carrier of an independent acting sectional ring, to
serve both as a packing and as a supplementary valve. These two
functions are brought into operation by the movements of the plunger,
that is to say, upon the plunger striking the water the latter passes up
around it, presses in the sectional ring forcing the segments together,
contracting its circumference, and pouring over its outer side, at the
same time the water ascends through the central valve, while upon the
ascent of the plunger the central or main valve closes and the water
pressing outward in all directions from the ring valve forces outward its
segments, thereby expanding the ring until it bears on all sides against
the inner walls of the cylinder, and prevents any escape of water
downward.
By this contrivance the capacity of the pump is greatly increased;
and the plunger may thus be made to work very loosely in the cylinder,
so that there will be absolutely no friction against either it or the ring
when it descends, and very little when it ascends.
By the combination of the said ring with the plunger, an outer
annular valve is obtained whose function is brought into action by the
water forming an elastic cushion to spread and hold the ring out,
allowing it to yield readily to any irregularities in the bore of the
cylinder or pump, and yet act efficiently to keep the ring pressed out
while forcing out the water.

page_text: Figure 1 is a section of a pump with the said improved plunger
valve; Figure 2 is an elevation of the plunger and its supplemental
valve enlarged; Figure 3 is a top view of the said supplemental valve or
sectional ring; Figure 4 is a bottom view of the same; Figure 5 is a
side or edge view; and Figure 6 a perspective view of a portion of one
of the segments of the ring valve.
The said Invention is applicable to any pump having a suction or
plunger valve; no description therefore of such pump is deemed
necessary further than to state that the valved plunger is secured to
and operated by the plunger rod or stem in the usual manner. The
plunger consists of a large ring or stock a, to which the usual central
valve is secured in any suitable manner, and which may be of any
desired construction. This stock is carried by the valve stem b; this
valve as shewn is of a bale form at its connection with the valve, but
the construction and connection of these parts may be varied.
The sectional packing ring or supplemental valve rests upon the ring
or stock a and is held vertically upon its seat thereon by being fitted
within notches c in the bale arms d or plunger stock as shewn in
Figure 2. The central opening in the ring or stock a accommodates the
main valve, which rises and falls therein seated upon a shoulder or rim
formed around the said central opening, the stem of the said valve being
fitted in a guide extension e on the under side of the stock. The
packing ring or supplementary valve is made in three sections or
segments f, more or less united to each other by interlocking recesses
upon one and projections upon the other segment, and by a metallic
plate g pivotted at / to one segment and overlapping the joints of the
other. This interlocking of the segments and the construction of the
joint is shewn more clearly in Figure 6, in which it will be seen that
from the point i the rabbet is made entirely across the segment and to a
depth equal to one half the thickness of the ring, while inside the
said point the rabbet is of the same depth and extends only half way
across the back of the ring. The end of the segment interlocking must
be the counterpart of that described, so that the segments fit together
and form a continuous ring, as seen in Figure 4. The several angles or

page_text: ends of this joint are cut away a little, and do not fill the space entirely,
therefore any sand that may work into the joint will readily wash out.
When the said segments are put together, there will be a seam or
opening across the inner wall at j and along the top at k, terminating in
top seams and m, which are always open slightly for the purpose
described. These seams are all covered by metal plates g fitted upon
the top of the segments, to one of which each plate g is pivotted, while
a bent portion n lies vertically over the inner joint ; of the inner wall;
thus all the joints are closed and yet allow the segments and the ring to
expand and open the seams, or contract and close them. Each plate g
covers the three top seams k, l, m, and extends down and covers the
vertical seam j of each joint formed by the junction of the segments.
The shape of the plates is conformed to that of the walls of the ring and
the bore of the pump.
In this way the plunger is constructed with an inner and an outer
valve, and the latter is arranged to serve also as the packing ring to the
plunger. By this construction of the valve and packing, the water not
only rises through the central valve, but also around the outside of the
plunger stock upon the descent thereof, thus giving a larger supply of
water, while its escape below the plunger is entirely cut off by the
expansion of the packing valve ring when the plunger ascends within
the cylinder. It also prevents the heavy thumping noise of the pump,
and allows it to work with comparative ease and with little power, these
and other important advantages are obtained by the outer supplementary
valve packing ring.
Having thus fully described the said Invention as communicated to
me by my foreign correspondents, and the manner of performing the
same, I wish it understood that I claim,-
First. In a valve pump plunger the combination therewith of the
supplementary valve and packing ring fas described.
Second. In a pump plunger an outer or supplementary valve ƒ
constructed to contract by the descent of the plunger, and to expand
by the ascending movement thereof by the action of the water, and to
be cushioned against the pump walls by an elastic water cushion as
described.

page_text: Third. The combination in a pump plunger valve of the pivotted
covering plates g for the joints of the sectional packing ring ƒ as
described.
Fourth. The packing ring constructed in segments finterlocked the
one with the other in a manner to admit of their opening and closing
with pivotted plates g as described.
In witness whereof, I, the said George Haseltine, have hereunto
set my hand and seal, this Fifteenth day of March, in the year of
our Lord One thousand eight hundred and seventy-three.
0
Witness,
JAMES EDWARDS,
8, Southampton Buildings,
London.
GEORGE HASELTINE. (L.S.)