US 975781 A
Description (OCR text may contain errors)
A. P. MORRIS.
SUBMBRGED DOUBLE ACTING PUMP.
' Patented N0v.15,`1910.
APPLICATION FILED MAY 21l 1910. 975,781.
ANDREW P. MORRIS, OF SNYDER, TEXAS.
SUBMERGED DOUBLE-ACTING PUMP.
Specication of Letters Patent.
Patented Nov. 15, 1910.
Application filed May 21, 1910. Serial No. 562,778.
To all whom it may concern:
Be it known that I, ANDREW P. MORRIS, a citizen of the United States, residing at Snyder, in the county of Scurry and State of Texas, have invented certain new and useful Improvements in Submerged Double- Acting Pumps, of which the following is a specication.
My invention relates to pumps and more particularly to double acting pumps, and the object is to provide pumps with which a practically continuous liow of water or other liquid may be had, to provide a pump from which the lixtures can be removed without disturbing the pump barrel, to provide the pumps with a spool for the sliding piston head so that the piston head will not be locked by sand or gravel, and to provide the pumps with intake valves for the down stroke of the piston located on the outside of the pump barrel so that the valves will not interfere with the removal of the tixtures.
Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.
Reference is had to the accompanying drawings which form a part of this application.
Figure 1 is a vertical section of the pump with the piston on the down stroke. Fig. 2 is a vertical section of the same with the piston on the upstroke. Fig. 3 is a horizontal section of the spool which carries the piston-head. Fig. 4 is a vertical section of.
one of the pocket valves located on the outside of the pump barrel. Fig. 5 is a vertical section of a portion of the pump barrel and tubular piston rod, showing a variation in the piston head and the intake 4valve for the tubular piston rod. Y
Similar characters of reference are used to indicate the same parts throughout the several views.
The pump is provided with a barrel l, a sleeve 2 screwed on the barrel, and a lead pipe 3 screwed into the sleeve 2. An intake valve 4 is provided at the bottom of the barrel 1. The sleeve 2 is provided withintake valves 5 which close the intake ports or inlets into the upper part of the barrel. A cap 6 closes the assage between the pump barrel and the lea pipe 3 or discharge portion except through the tubular piston rod hereinafter explained. The piston rod 7 moves through a perforation in the cap 6 and through the nipple 8 on the cap. A stufiing box or gland is provided in the following manner. A leather flanged sleeve 9 is mounted in the nipple 8 and the flange thereof rests on top of the nipple. A cap 10 is perforated and screwed on the nipple 8. A spool 11 is attached to the piston rod 7 by screwing a flanged coupling 12 on the lower end of the rod 7 and then screwing the spool 11 into the coupling l2. The spool 11 has an annular shoulder 13 and a leather washer 14 is caught between the flange 15 and the shoulder 13 and forms a seat for the piston head 16 above the piston head. The spool 11 consists of an upper ring 17 and a lower ring 18 connected by a plurality of bars 19 which may be integral with the two rings. The ring 18 is beveled between the bars 19 so that there will be as little resistance to the inward flow of water as possible.
. A flanged plug 20 is screwed into the ring 18. A leather washer 21 is caught between the ring 18 and the flange 22 and this washer forms a lower seat for the piston head.
Provision is made for the removal of the piston rod and piston and the cap 6 without disturbing the barrel 1, sleeve 2, and lead pipe 3. The cap 46 has left threads and the cap of the stuffing box has upwardly projecting lugs 23 and the piston rod 7 has pins or bits 24: for engaging the lugs 23. The sections of the sucker rod are provided with right threads, consequently when the sucker rod is used to unscrew the cap 6 the sections of the sucker rod will not be unscrewed. The bits 24 will engage the lugs 23 and the cap 6 may be unscrewed from the sleeve 2. The nipple 8 and cap 10 will also have right threads. W'hen the cap 6 is released, it and the piston, and piston rod can all be removed from the pump barrel and lead pipe without disturbing the barrel or lead pipe or sleeve 2. The pocket intake valves 5 are located on the outside of the sleeve 2 and below the large part of the sleeve in order not to interfere with the insertion of the sleeve in the well. The valves are not in the way of removal of the piston. Pockets 25 are provided with nipples 26 which are screwed into the sleeve 2. Caps guards 29 arerprovded for switching the valves into side pockets 80 during the intake of water.
On the down stroke of the piston water is discharged through the spool ll into the tubular piston rod and at the same time water is taken in through the ports of valves 5 and water passes from the piston rod through ports 31 into the lead pipe 3. On the upstroke the valves 5 are closed and valve 4l is opened. The piston 1G is switched to the lower seat of the spool and water passes through the spool from the barrel into the tubular piston rod and on out through ports 31.
Attention is called to the ports of valves 5. These ports 28 are located at the lowest points of the pockets so that the valves will be cleaned automatically and will need no attention for this purpose.
The variations shown in Fig. 5 include different means for forcing the water from below the piston head above the piston head. In this variation the piston head 16 is not movable relative to the piston rod 7, but rigid therewith. An intake valve 32 with inlet port 33 is provided for letting water into the tubular piston yrod 7. A guard 34 is; provided to prevent the valve 32 from going up the stem 7. The full line in Fig. 5 shows the position of the valve on the upstroke and the dotted outline shows the position of the valve 32 on the downstroke. On the down stroke, the water is forced up within the piston rod, as before. j
Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is,-
1. In a double acting pump provided with a barrel and a lead pipe; a sleeve connecting said lead pipe and said barrel, a perforated cap having left threads screwed into said sleeve and closing the passage between said barrel and lead pipe and having an upwardly projecting nipple, a stutling box cap provided with right threads screwed on said nipple, a leather washer interposed between said nipple and its cap, lugs formed on said stutling box cap, a tubular piston rod moving through said rst mentioned cap, bits carried by said piston rod for engaging said lugs, said piston rod having discharge ports above said caps, a. spool attached tothelowe end of said piston rod, a piston head car-v ried by and movable on said spool, and intake valves for said barrel.
2. In .a double acting pump provided with a barrel and a lead pipe; a sleeve connecting said lead pipe and said barrel, a perforated cap having left threads screwed into said sleeve and closing the passage between said barrel and said lead pipe and having an upwardly projecting nipple, a stuffing 'box cap provided with right threads screwed on said nipple, a leather washer interposed between said nipple and its cap, lugs formed on said stuiiing box cap, a tubular piston rod moving through said lirst mentioned cap, bits carried by said piston rod for engaging said lugs, said piston rod having discharge ports above said caps, a piston carried by said piston rod, provision for admit-ting water into said piston rod above said piston, and intake valves for said barrel above and below said piston.
3. In a double acting pump provided with I a barrel and a lead pipe; a sleeve having a -reduced portion and connecting said lead pipe and said barrel, a perforated cap closi ing the passage between said barrel and said .lead pipe, a tubular piston rod moving lthrough said cap and provided with discharge ports above saidcap, a stuiing box for said piston rod attached to said cap, a
I piston head, a spool attached to said piston rod and carrying said piston head, said piston head being movable on said spool, an intake valve for the lower end of said barrel, and pocket intake valves for the upper end of said barrel, each consisting of a casing having an intake port in the lower part thereof and a recess in one side, a ball valve normally closing said port and moving into said recess during an inflow ot' water, a guard for directing said valve into said recess, and a nipple integral with said case screwed into said sleeve.
In testimony whereof, I set my hand in the presence of two witnesses, this 13th day