IMPROVEMENTS IN PUMPS AND IN VALVES THEREFOR.
Year: 1881

page_text: "
LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex, for an
Invention of "IMPROVEMENTS IN PUMPS AND IN VALVES THEREFOR.'
A communication from abroad by Daniel Simeon Chapin, of the State of
Massachusetts, United States of America.
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 13th December 1881.
HERBERT JOHN HADDAN, of Kensington, Middlesex. "IMPROVEMENTS IN PUMPS
AND IN VALVES THEREFOR." A communication from abroad by Daniel Simeon
Chapin, of the State of Massachusetts, United States of America.
The pump herein described is specially useful for the pumping of sewage or
liquid containing impurities or foreign substances. This pump has two or more
tubular pistons, preferably three arranged in one line. They fit to and move length-
wise in other tubes which may be termed the pump barrels, one being the induction
and the opposite one the eduction barrel. Every piston operates in and with the
two adjoining barrels. Within each tubular piston and at or near its middle there
are arranged the two so called hollow semiconoidal valves hinged to a ring shaped
valve seat and placed symmetrically to each other, each having its inner surface in
or about in parallelism with its outer surface, and making part of the surface of a
cylinder, having a radius equal to that of the bore of the piston; such being so that
when each valve is fully open in the piston, there shall be between such valve and
its fellow or twin, a clear passage or water way, having in cross section an area
equal to, if not greater than that of the cross section of the bore of the piston. Each
valve at its base will be elliptically arched, the valve being correspondingly arched
on that edge of it which is to bear against the fellow valve, when the two valves
are closed. The valve case and its valve seat ring should be sufficiently large in
diameter to allow of the free or necessary play or movements of the valves for
closing them together or opening them apart, until in the latter instance they may

page_text: bring up against the inner surface of the valve case.
When the valves are closed
together they interrupt the flow of liquid through the piston. The valve seat is
arranged in a tubular valve case, constituting part of the piston, and having a bore
larger than that of each of the two remaining parts of the piston, which are screwed
into such valve case. To operate the three pistons, the two exterior ones are
connected with two of the cranks of a three throw crank shaft by connection rods,
jointed to such pistons and two cranks. The middle piston has a standard projecting
up from it, such standard being slotted vertically to receive the wrist of the third
crank. On the crank shaft being revolved by a belt, from a suitable motor, the
pistons will be simultaneously moved in the opposite directions, either toward or
away from each other, or in a manner to cause, when the induction barrel com-
municates by a conduit with water, such water to be drawn upward through such
conduit, and forced into and through the barrels and pistons, and thence into the
eduction pipe.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
12th June 1882.
HERBERT JOHN HADDAN, of Kensington, Middlesex. "IMPROVEMENTS IN PUMPS
AND IN VALVES THEREFOR." A communication from abroad by Daniel Simeon
Chapin, of the State of Massachusetts, United States of America.
The pump herein described is specially useful for the pumping of sewage or
liquid containing impurities or foreign substances. Fig. 1 is a side elevation; and
Fig. 2 a longitudinal section of the pump. Fig. 3 is a view of a pair of what I
term semiconoidal valves, as closed together; while Fig. 4 is a view of them as
open or separated to allow of the passage of a liquid through them.
This pump has two or more tubular pistons, each consisting simply of a tube of
sufficient length. The Drawing shows three of such pistons marked A, B, and C
respectively. They fit to and move lengthwise in other tubes G, D, E and F,
arranged with them as shown, and which may be terined the pump barrels, that
one marked F being the induction, and that marked G the eduction barrel.
The piston C operates in and with the two barrels E and F. The piston B
operates in and with the barrels D and E, and the piston A operates with the
barrels D and G.
Within each tubular piston and at or near its middle there are arranged the two
so called hollow semiconoidal valves H, each having its inner surface in or about in
parallelism with its outer surface, and making part of the surface of a cylinder,
having a radius equal to that of the bore of the piston; such being so that when
each valve is fully open in the piston, there shall be between such valve and its
fellow or twin, a clear passage or water way, having in cross section an area equal
to, if not greater than that of the cross section of the bore of the piston. Each
valve at its base or part to bear against the ring I, will be elliptically or approxi-
mately elliptically arched, the valve being correspondingly arched on that edge of
it which is to bear against the fellow valve, when the two valves are closed. The
valve case and its valve seat ring should be sufficiently large in diameter to allow
of the free or necessary play or movements of the valves for closing them together
or opening them apart, until in the latter instance they may bear up against the
inner surface of the valve case.
When the valves are closed together they interrupt the flow of liquid through
the piston.
The valve is shown in perspective in Fig. 5, in transverse section in Fig. 6, and
in inner edge view in Fig. 7.
These valves at the middles of their bases are hinged to a ring I arranged in a
tubular valve case a constituting part of the piston, and having a bore larger than
that of each of the two remaining parts b. c. of the piston, which are screwed into
such valve case. To operate the three pistons, the two exterior ones are connected
with two of the cranks d e. f. of a three-throw crank shaft g, by connection rods h
and i, jointed to such pistons and two cranks. The middle piston B has a standard k
projecting up from it, such standard being slotted vertically to receive the wrist of
the crank Fixed on the shaft is a band pulley or driving wheel l. On this
wheel being revolved by a belt from a suitable motor, the pistons will be simul-.
taneously moved in the opposite directions, either toward or away from each other,
or in a manner to cause, when the induction barrel F, communicates by a conduit K,
with water, such water to be drawn upward through such conduit and forced into
and through the barrels and pistons, and thence into the eduction pipe G, each of
the cranks of the shaft g, being what is termed a "double crank."
I

page_text: The tube G, piston A, connecting rod h, and its crank c, may be dispensed with,
and a two-throw crank shaft may be substituted for the shaft g, the two cranks of
it being projected opposite ways from the shaft. In this case the remainder of the
parts would form what may be termed a "duplex pump," having two tubular
pistons only which should be moved in their barrels alternately toward and away
from each other. When three or more tubular pistons and the requisite number of
barrels thereto are used, each piston should be provided with a pair of valves as
described, and also with mechanism to properly move it, the said piston in its two
barrels, whether such mechanism be as explained or otherwise properly constructed
and arranged.
substantially as described.
2. The combination of the tubular piston, essentially as described, and its pair
of so called semiconoidal valves, made and applied to each piston, substantially as 1
set forth.
3. The combination of the valve case a, the pair of so called semiconoidal
valves H, and the tubes b. c. all constructed arranged-and-applied-substantially_as
and for the purpose set forth.
4. The pump as composed of two or more tubular pistons, provided with the so 2
called semiconoidal valves as described, and also of three or more barrels arranged
and to operate with such pistons and valves essentially as explained.
In witness whereof I the said Herbert John Haddan have hereunto set my
band and seal this Twenty-fifth day of May A.D. 1882.
TT T HADDAN