IMPROVEMENTS IN STEAM PUMPS
Year: 1884

page_text: I, LEON BERNARD CARRICABURU, of the City and State of New York, United
States of America Inventor, do hereby declare the nature of said Invention for
IMPROVEMENTS IN STEAM PUMPS, to be as follows:-
My Invention briefly speaking, relates:
To a tubular guide for the piston rod which guide oxtends from the head of the
steam cylinder to the head of the water cylinder.
To a tubular air vessel surrounding the said piston rod guide.
To means for giving easy access to the valves.
To the pump valves provided with spring carriers that allow said valves to lift
bodily from their seats and swing to an inclination and permit the water to pass
by freely.
The steam and water cylinders are in line with each other and the pistons for
these cylinders are upon the same piston rod.
Between the facing heads of the steam and water cylinders there is a tube that
is cast with said heads and through this tube the piston rod passes.
This tube may be bored true from end to end to fit the piston rod or it may bo
cored out and only the end portions bored, the recess being filled with Babbit metal,
or the entire tubular piston rod guide may be lined with Babbit metal or with a
tube of any suitable metal through which the piston rod may slide freely.
A tube of copper or brass may be used around the piston rod, although not
always necessary, but if used such tubo can be replaced when worn and it prevents
wear of the piston rod. It is preferable to make this tube in two parts with a
packing between the two adjacent ends of the tubes and to use a tube of thin
sheet metal around the piston rod inside the packing and between the ends of the
tubes to prevent the tubes pressing upon the packing.
Around said tubular piston rod guide there is a second tube cast also with the
facing heads of the steam and water cylinders; this second tube becomes a firm
support for said leads and also forms an air vessel or chamber for the pump, there
being a pipe extending from the water delivery pipe to the bottom part of said air
vessel; the air confined within this chamber acts to equalize the flow of water.
The pump is made with the usual passage ways, partitions and seats for the
valves, but said sheets and partitions are cast in one with the water eylinder. The
valve chambers, however, are open at both sides to allow for facing off the valve
seats and for entering or withdrawing the valves.

page_text: The open sides of the valve chambers are closed by movable caps, one at each
side, held in place by bolts and nuts.
The bolts are polygonal and enter correspondingly shaped holes in the metal of
the valve chest and the ends of each bolt are screw threaded for the nuts. By this
arrangement the bolts cannot revolve and either cap plate can be removed without
disturbing the other.
The valves are made alike..
Each valve has trunnions nearly in line with one edge and the spring carrier has
helices around these trunnions: there is a bow extending across the valve from
the inner part of one helix to the ioner part of the other and from the outer.
part of each helix an arm extends that presses against the valve chest above the
valve.
It is to be understood that all parts of this spring valve carrier are made in one
piece of spring wire.
The arms just referred to may terminate as helices or coils surrounding studs
that depend from the under surfaces of the valve chest. In either instance the end
portions of the spring valve carriers are held in place and the spring of the carrier
tends to press the valve to its seat, but when the water acts beneath the valvo to
open the same tho valve is raised bodily from its seat, and assumes an inclined
position, because the arms yield-to-the-pressure and the helices form axes for the
trunnions to partially revolve in. When the-pressure_on_the_valve_ceases the
spring carrier returns the valve to its seat.

page_text: piston rod may slide freely.
Under all circumstances there will 06 tule or LO
tendency to leak through the tubular piston rod guide, between it and the piston
rod, because there is pressure of steam in the steam cylinder around such rod at
the same time, there is a pressure of water around the other part of the rod in
forcing the water out of that end of the water cylinder, and when the pump is
drawing water into the water cylinder around the piston rod, there is an exhaust
or vacuum action in the steam cylinder around the piston rod, hence there will be
simultaneously compression at both ends of the piston rod guide, or elso simul-
taneously an exhaust action, and there will be no tendency for the water or
lubricating material that may be within the tubular piston rod guide to pass
from one end to the other and the said piston rod will move with little or no
friction and without requiring packing.
The inlet water way h, is formed below the valve seats 36 and 37, and the
ports e, e, pass to the water cylinder and the seats 38 and 39 are above these
ports and the inlet valves i, k.
The exit valves and m are upon said seats 38 and 39, and the top of the valve
chest is provided with the water way D¹ to the delivery pipe D², which pipe may
be connected at the top or at the side or both; when only one delivery pipe is used,
a stopper D³ is to be inserted in the opening that is not made use of.
It is preferable that the seats-and-metal partitions of the respectivo waterways
be all cast in one with the water cylinder, but the valve chambers are open-at-both
sides to allow for facing off the valve seats and for ontering or witlidrawing the
valves, and moveable caps E, fig. 2, are made use of, one at each side of the valve
chest, and said caps are secured by bolts E', that pass through the metal portions
of the valve chest, there being square holes for said bolts so that they will not
revolve, said bolts being polygonal and rounded-at both ends, with screw threads
upon said rounded ends, and the nuts are at both ends of the bolts to hold on the
cap plates E. By this construction either cap plate that is most accessible can be
taken off and should a-bolt-break it can be driven out and another substituted.
It is preferable to make all the valves alike, and the peculiarity-in-tho_con__
struction is that the valves lift bodily from their seats and also swing up at an
inclination.
Valves have been made with guide stems and also with spring to press them to
place. Where the valve lifts bodily and is parallel to the seat, the water does not
escape freely to the side where the greatest quantity passes to the port, and thore
is unnecessary detention to the water. Where the valve is hinged at one side it
does not lift free from the seat and any solid substance in the water is liable to be
thrown upon the seat near the hingo because there is not sufficient rush of water to
prevent the same lodging.
-
By my improvement the valve lifts entirely from the seat and assumes an
inclined position so that the water is not obstructed in its dischargo all around the
valve, but the greatest opening is in the direction of the greatest flow of water.
To accomplish these objects I make use of trunnions 2, 2, on the valve nearly in
line with one edge, and I introduce spring valve carriers S, having helices 3, that
surround the trunnions 2, a bow 4, passing across the back of the valve and arms 5,
that press against the valve chest above tho valve. These arms 5, may either
terminate as helices or coils, as at 6, surrounding studs that depend from the under
surfaces of the valve chest, or else the ends the ends may be bent at right angles
and pass into recesses in the edges of the partition in the valve chest as at 7, 7.
In either instance, the end portions of the spring valve carriers are held in place
and the spring of the carrier tends to press the valve to its seat, but when the
water acts beneath the valve to open the same, the valve is raised bodily from
its seat and assumes an inclined position, because the arms 5, yield to the pressure
and the helices form axes for the trunnions to partially revolve in.
When the pressure on the valves ceases the spring carrier returns the same the
same to its seat.

page_text: 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
n
First. The combination with the steam and water cylinders in a steam pump, of
an air vessel between the heads of the respective cylinders, and the piston rod and
tubular guide passing through such air vessel, substantially as set forth.
Second. The combination with the steam and water cylinders, pistons and piston
rod, of a tubular piston rod guide, and a removeable tube surrounding and moving
with the piston rod, substantially as set forth.
Third. In combination with the steam and water cylinders, pistons and piston
rod, a tubular piston rod guide extending from the head of the steam cylinder to
the head of the water cylinder, and a packing around the piston rod and within the
tubular piston rod guide, said packing moving with the piston rod, substantially as
set forth.
Fourth. The combination with the steam and water cylinders, pistons and piston
rod, of a tubular piston rod guide, the cylinder heads at the ends of the same, and a
lining to the interior of such tubular piston rod guide, substantially as set forth.
Fifth. The pump valve having trunnions in combination with a spring receiving
the trunnions and acting to close the valve or to allow it to rise bodily from its
seat, substantially as specified.
Sixth. In a pump, a valve having trunnions extending out at the sides in
combination with a spring having coils around the trunnions and arms that press
upon the valve and chest respectively, whereby the valve is kept in its place by
the spring and allowed. to open and close, substantially as set forth.
Seventh. A valve chest having the valve seats and waterways, and removeable
caps at the sides of the chest, in combination with polygonal bolts rounded at
the ends and provided with screw threads and nuts, the bolts passing through
polygonal holes in the chest so as to be held from turning, substantially as set
forth.
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