US1120998A - Pump-cylinder. - Google Patents

Description

V. E. CANODE.

PUMP CYLINDER.

APPLICATION FILED APR. 8, 1914.

1,1 20,998. Patented Dec. 15, 1914.

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Mttozme V. E. UANODE.

PUMP CYLINDER.

APPILIGATION FILED APR. 8, 1914.

1,120,998. Patented Dec. 15, 1914.

2 SHEETSSHEET 2.

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PUMP-CYLINDER.

Be i known that I, VICTOR E. CANonE, a

citizen of the United States, and a resident of Boundbrook, in the county of Somerset and State of New Jersey, have invented certain new and useful Improvements in Pump-Cylinders, of which the following is a full, clear, and exact description whereby anyone skilled in the art may make and use the same.

The invention relates to pumps and more particularly to a special pump cylinder.

The device is in eflect a duplex pump but has a minimum number'of valves and moving parts to secure a. maximum displacement of water.

The device as hereinafter described ma be used in deep or shallow wells or cisterns or in fact as a horizontal pump of the duplex type.

The ordinary method of forming wells ranging in depth from fift feet to a thousand feet or more is to drill a hole of the required diameter, usually, from six to ten inches, and case this opening with a piping down to bed rock. A drop pipe to the lower end of which is secured a pump cylinjder, is then inserted in the casing to the required depth to be properly submerged and the actuating rod for the cylinder and its pistons is carried up through the drop pipe and actuated by any desired type of mechanism to move the pistons. Many types of devices have heretofore been used in such wells, the simplest of which consists of a cylinder having a check-valve at its bottom -and-a reciprocating piston provided wlth a check-valve which, upon a downward movement of the piston, displaces the water below the piston, carrying it into the upper part of the cylinder beyond the check-valve of the piston. Upon a reverse movement of the piston, the check-valve at the bottom of the cylinder opens and the water is drawn up into the cylinder. 4

There are also numerous types of double acting or duplex cylinders which are usually of a complicated character havmg a great number of moving parts, by-passes and valves.

It is the object of the present invention to provide a very simple and'eflicient pumping cylinder having: a minimum number of parts Specification of Letters Patent.

and with a maximum capacity for displacing water.

It is a further object of the invention to provide a check-valve in conjunction with a statlonary piston-head, which, cooperating with a pair of reciprocating piston-heads,

will, upon each" reciprocation of the main piston, dlsplace double the quantity of water ordinarily moved by a single piston.

Referring to the drawings: Figure 1 is a sectional view of a well-casing and the improved pump cylinder showiiig the chambers filled with water. Fig. 2 is a similar view with the parts at the opposite stroke .Patented Dec. 15, 1914..

Application filed April 8, 1914. Serial No. 830,330.

limit, indicating the displacement of Water contained in the cylinder of Fig. 1. Fig. 3

is a sectional view, with'parts broken away,

of a slightly modified form of the device in the form of a horizontal pump.

It will be-understood that the device, as illustrated herein, is somewhat in diagram,

, to show the operation of the structure and that the exact details of construction of the cylinder pistons and valves is not essentially material.

As shown in the drawings, the device illustrates a very simple mechanism with which a cylinder having a given diameter, may be utilized to displace double the quantity of water at a givenpiston strdke as compared with a single piston working in a narily is a sectional pipe arrangedin the drill-hole. Within this casing and supported upon a drop tube or pipe 2 is a water cylinderB. This cylinder is preferably slightly less in diameter than that of the drop tube 2 and is secured to it in any convenient manner asby a coupling 4. Arranged within the water cylinder 3 is a main piston having two heads 5, 6, joined together by a cylinder 3*. The upper head 5 1s operatively secured to a pump rod 7 and a valve, shown herein as a ball valve '8, controls the flow of water from the lower side of the piston head 5 to the upper side there moved therefrom and from the cylinder 3, together with the pistons 5, 6 and appurte- -nant parts by withdrawing the piston rod 7.

The cage 10 has extending upwardly from it a tubular stem 12, which passes through the piston head 6 and is provided at its upper end with a piston head 13. This piston head 13 is arranged. between the heads 5 and 6 and being a stationary head, it is efiective in its operation with reference to both the piston heads 5 and 6. To prevent back-pressures between the stationary piston 13 and the moving piston head 6, ports are formed in the wall of the cylinder tube 3 as at 14:.

" It is apparent from a comparison of Figs.

' 1 and 2 that upon an upward movement of the cylinder heads 5 and 6, water will be drawn up through the check-valve 11 into the chamber 15 below the piston head 6 and of one of the heads.

the piston head 13 in the cylinder 3 being stationary, water will also be drawn up into the chamber 16 by the piston head 5. Upon a reverse movement of the moving pistons 5 and 6, the check-valve 11 will be closed and the water in the chamber 15 will be forced up .through the hollow stem 12 into the chamber 16 and the water in the cham ber 16 will be displaced so that the entire flow will be through the check valve 8 to the upper side of'the piston head 5. From the above it is obvious that with a given movement of the piston heads, there will be practically a duplex action and approximately double the quantity of water will be displaced'as compared with the same movement There is in effect a moving pumping piston having a pumping head at the outside and a pumping head on 'the inside, if the heads 5 and 6 are considered with reference to the stationary pistonhead 13.

In the modified form of Fig. 3, the same general arrangement is illustrated as adapted for a horizontal pump. Referring to this figure the numeral 25 denotes a stationary cylinder having piston heads 26, 27, the head 26 being provided with a swinging valve 28 between the cylinder and discharge pipe 29. The two piston heads 26, 27 are connected by the cylinder 30 within which is arranged the piston 31 having a hollow stem 32 extending through the piston head 27 and controlled by a check-valve 33. The stationary valve tube 32 is illustrated as perforated as at 3 1 to permit a flow of water into the chamber 36 to be acted upon by the head 27. There is also a flow through the tube 32' to the chamber 37 owing to the suction of the head 26. Vent passages 38 prevent pressures between the stationary head 31 and the movable" head 27. The piston heads may be moved in any desired manner and as illustrating a simple means, the drawings show a stem 39 connected with the pivoted lever 10.

Obviously the detail form of the valves, pistons, 'packings and appurtenant parts may be modified to suit the exigencies of any particular case. No attempt has been made in illustrating and describing the invention to specify a particular type or form of piston or packing or valve.

It will be observed that the entire structure embodies only one moving part, namely, the main piston having the two piston heads, but by arranging this as with an intermediate pumping cylinder and with'the stationary piston located therein, both heads are in effect displacing substantially an equal volume of water at each stroke.

It is to be understood that the drawings are not to be considered as scale drawings as,

in practice, the diameters of the main water cylinder and the moving piston may be so designed that there will be a substantially equal volume of water moved in both chambers and with substantially the same power on both strokes. It is equally true that conditions sometimes 'make it preferable to have the reciprocating cylinder of less volume than the main chamber. In fact the volumes of the two water chambers may be varied to suit any particular condition desired.

It is to be understood that any inversion of the mechanism is to be considered as falling within the intent and scope of the invention and the relative arrangement of moving the stationary piston heads may be changed so long as upon each stroke there is a displacement of substantially the same volume and effected in substantially the same manner as herein described.

What I claim as my invention and desire to secure by Letters Patent is:

1. A pumping cylinder provided with a check-valve, a reciprocating cylinder having a piston head at each endthereof, a stationary piston arranged in said cylinder and a fluid connection extending through one of said heads to the check-valve.

and extending through one of the heads of the reciprocating cylinder, a check-valve controlling the flow of fluid from the reciprocating cylinder and means for reciprocating the cylinder.

3. A pumping cylinder consisting of a casing, a removable check-valve seated at one end of said cylinder, a reciprocating cyllnder arranged 1n sald pumping cyllnder and provided with piston heads, a stationary piston head arranged in the cylinder intermediate said heads, a fluid connection from said stationary cylinder to the check-valve, a check-valve in one of the reciprocating cylinder heads and means for reciprocating said cylinder;

4:. A pumping .cylinder having means of connection to a drop pipe, a valve seat at one end thereof, a "alvecage resting in said seat and containing a check-valve, 'a tube extending from said valve through a piston, a cylinder encircling said piston and provided at opposite ends with piston heads, a

, valve in one of said heads and means for reciprocating the cylinder and heads.

5. A pump cylinder provided with. an inlet valve, a reciprocating cylinder mounted therein and having a stationary piston and hollow piston rod connected therewith, said cylinder having piston heads at opposite ends thereof, a valve arranged in one of said' heads and means for 'reciprocatingthe cylinder.

.6. A pumping cylinder having a valvecontrolled chamber, a piston reciprocating therein, said piston having heads and an intermediate cylinder, a stationary piston in said cylinder having a fluid connection der connecting both piston heads, a stationary piston mounted in said cylinder intermediate the heads, a fluid connection from the upper side of said stationary piston to the main chamber and a valve con trolling the cylinder above the stationary I piston.

VICTOR E. CANODE.

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