US967498A - Pump. - Google Patents

Description

E. W. CLARK.

PUMP. APPLIOATIN FILED JUNE 14, 1909.

Pmluted Aug. 16, 1910.

together hy the intermediate coupling 4i.,

the liquid iepunipod to the top ofithe Well.

notitie.

`specifinition of Letters reim.

'Patenten iiug. Iie, ieia ppication filed June 14, 1909. Serial No. 502,067.

To all whom it may eoiecem;

.le it 'known'that I, EDWIN YV. CLAmiTa cit izen ot' the United States, residing,r at Chicago, in the ecuinty oiiCookand State of Illinoi'e, havei,"invented a certain new and nset'ul Improvement in Pumps, of which the`l `following is a specification. j y

My invention lrelates to pumpe and is especially adapted for deep Wells, partieularly those where a well casing is employed. ln its most advantageous forni, iny pump double acting, and I have seleoted this form to illustrate the invention. v

The general vobject ol' the invention. is to obtain a puinp which shall he durable, Simple in construction and eil'ieient in act-ion.

Home oit thel .specific objects ofthe invention are: iirst, to provide a pump of this general character in which the llow `wilLfhe continuous; second, to providela pump` in which the otwration` shall be positive, the l` parts4 operating` toaetually force the liquid instead ot' depending upon atmospheric pressure as in the `oase ota puinp acting` `upon the vacuum principle; third, to provide a construction such thattheacting parte may he withdrawn by. merely raising the pump rod without removing the cylinder from the well easing; `fourth, `to provide a construction in which the stationary parte Within the'cylinder may he seated hy merely lowering them after the cylinder ie in position `in the well; and iiitth, to .provide certain details of construction hereinafter more fully Specified. y

l. obtain. my ohjeets hy `the mechanism` illustrated in the iuzeonipnnyii1g,drawings, in which y Figure l isa central vertical'section ofa pump embodying my invention and shown in position ina Well easing. Edge. Q, 3, i, 5i and (3 are trani-svolse seetional views taken reei'iurtively on the lines Iti,` iw-u and (in-( of Fig. l. v

t'w'imihir numei'uls refer to similar parts throughout the several viewsa h y'ilic parte oit the pump proper areA eon-` tained within theV welll casing l. which ie usually circuler in AGroen `si-:rtion and `ei:- tends from top,tolmttim of the Weil. `With` in the wel] easing are the upper and lower cylinders 2 and 3 which are Connected The upper cylinder is attachedto and coininunioetes 4with the pipe 5 fthroughivhieh 'The lower cylinder 3 tei'n'iinateeatthehot `part l1 having the 14 for preventiiw the' pipe .i5 to toni in the bottom coupling 6 which apertured to permit liquid to pass vup through "itl Said bottom coupling',- is provided With a check valve, orpreventing the downward passage 'of liquid. through it, and in the preferred .construction said check consists ofa vertically apertured seat. operate with the cheek `valve valve is preferahlyrzi hall by means of a. cage 9 or vice. `In order come to a hearing automatically and there.-

S." Said cheek and is held captive after "he iirinly held in position, it and. the` are correspondingly bottom coupling 6 tapered to fit each other as shown. `The cage 9 `is screw threaded near the that it and the valve seat and Valve inay` he withdrawn fromV the well when desired means ofthe correspondingly threaded part 24 hereinafter mentioned. V

o The intermediate the outside `of the cylinders 2 and 3 to `the insidethereof. At a point alcovel said aperf tures said coupling has an annular 'tapered adapted to co other euta'ble de*` that the valve seat 7 `in av top in `gorder coupling t `allieve` nien#` tioned is yprovided `with lateral apertures Q?. through which the liquid may pass from` surface 10 which converges doivniiiardly and i.

forms a eeet for the correspondingly ta# pered valve seat which in the present in- Stance `is formed of taper and the party 1.2 being vertically apertured and threaded `for `screwing into the part ll `to forni `a support for the check valve i3. In tho. design shown, the part 1l is provided with an arch grcata distance from ite seat. .x

The `parte l2, 1.3 and le areoentrally apertnred in a if'ertioei direction to receive the center pipe `l5 which is verticallj7 ino'vahie and' carries the tipi` i `and lower plungers. 'lthough the.construction of these pluiigere may healtered Without departing' iroin the spirit of the invei'ition, the form iiliietrated vis edvantageous, the upper plunger consieti i ingiof a plurality ofinetallie disks 18,18 `screwing onto `the upper portion of the eenhetiveen themwash- '.lfhe parte .18 andltl `at pointe` outsideiol".y permit upward iioii oil:l liquid..

'ter pipe .l5 and carrying ere or cup leathers 19. are `wrtieallfy aportar-ed Ai voire `2O ieaidaipted to seat upon'the top ofthe yupper `plunger `to prevent liquid .from "passing downward through. it. Said vaive isi-capable ot rising; a limited distance oiiiite feeat ivlienthe liquid 1praises upward upon it two parts Ill and 12the` from beneath, as indicated in dotted lines, Fig. 1. The upward movement of the check valve 20 is limited by means of the stop or collar 21 which screws upon the center pipe 15 although any other suitable means may be employeoh By preference a sleeve 22 is screwed onto pipe 15 between-the collar 21 and upper section 18 of the upper plunger and thus -constitutes a. distance piece for holding the parts 18 and 21 in relative position and serves as a' guide for the check valve 20.

The lower plunger in its preferred form consists of a, vertically apertured valve seat 24 having an inner flange 25 near the' bottom adapted to support the' disk 26 and washers or cup leathers 27. Said disk and washers are Vheld down by means of a part 28 which screws onto the upper partof the valve seat 2,4 and serves to reciprocate the latter up and down within the cylinder 3. Said part ,28 connects at the. topvwith the Vbottom of the center pipe 15 and is secured thereto preferably by s'crewthreads and a pin 29.

Part 28 is imperforate at the sides so that liquid cannot escape.-r except through the pipe 15. It islso formed as to hold the ball 30 captive sothat the latterwill seat upon the valve seat 24 and prevent downw'ard passage of li uid. It will be noted that in this preferred form the parts numbered 24 to4 30 inclusively constitute a combinedv lower plunger and check valve operating in the cylinder beneath' the stationary check valves, 11,12 and 13. Part 24 is threaded at its lower end to engage the threaded upper portion of the part 9, so that all of the loose or removable parts may be withdrawn from the, cylinder through the agency of the piston rod 15.

p Pipe 15 is attached to and communicates with the lower end of a pipe 32 which is v laterali apertured to permit the escape of liquid rom theinside of said pipe out into the discharge pipe .5 at a point above the upper plunger. secured touand to be vertically lreciprocated by the pump rod (not shown) which eX- tends upward to the top of the well and connects to the source of power.

In operation, when the parts are in their lowermost o`sition the valves 8, 13,- 20 and 30 will be own upon their respective-seats. As soon as the pipe 32 and lparts connected thereto commence to rise, the weight of the liquid outside in the well casing, assisted by the suction of the lower plunger causes the valve Sto rise and admit liquid into the lower cylinder beneath the lower plunger;

at the Sametime the wei ht of liquid andl suction of the upper p ungerA cause the' yvalve 13 to rise and admit liquid into.' the upper cylinder 2 beneath the upper plunger, the liquid entering through the apertures 9 and the vertically faperturcd part 12. Thus Pipe 32 is adapted to bel the upper and lower cylinders are both tilled with liquid beneath the respective plungers. During the upward movement of. the parts As soon as the parts have reached their highest position and commenced to descend, the valves 8 and 13 will become seated and prevent the downward escape of liquid from the upper and lower cylinders. The liquid confined above the bottom check valve 8 and center check valve 13 causes the valves 30 and 20 respectively to rise from their seats and permit the upward passage of liquid through the lower and u per plungers respectively. The downward) movement of the upper plunger produces no effect upon the level of the water in the discharge pipe 5, but the downward movement of the lower plunger causes the liquid confined beneath it to be forced upward through the valve seat 24, center pipe 15 and outward through the lateral apertures in the pipe 32. This quantity of liquid emerging from the pi e 32, being added to the amount of liquid alieady contained within the discharge pipe 5, and prevented from escaping downward therefrom by the check valve 13, causes an up ward iiow of water in the discharge pi. e 5.

Hence there is a pumping action upon oth the upward and downward stroke and the pump 'is doublev acting.

It will be understood that under the ordinary practical conditions in pumpin water or oil from a well, the washers .an other frictional parts are subjected to great wear and it becomes desirable to frequently renew them. In a pump of myV construction the removal ofthe reciprocating parts is accomplished in a very simple manner, for all that is necessary is to pull up the pump rod and pipe 32 and raise the parts to the top of the Well, the lower `plunger striking the seat ofthe center check valve 13 and lifting it from its tapered or conical support 4. rfhe mere lifting of the pump rod therefore is all that is necessary to withdraw both plungers and all of the valves and valve seats except the bottom one, which may be afterward removed by means of a suitable tool as herein4 previously sug rested. Conversely, the parts may be adjusted while Ithe cylinders remain at vthe bottom offthe well by merely lowering them into place, the weight of the parts causing the proper seating of the tapered members. Although renewals arethus easily madein a pump of my construction such renewals need not be made with s uch frequency as is required in a pump wherel the vacuum, principle is em loyed, in part or in whole, and where lea 'y valves would destroy the necessary 'vacuunn ln my pump the action is positive and the liquid lll ' to seat upon said is atl all times positively1 forced in the propel' direction.`

Although the upper and lower cylinder 2 and 3 and intermediate coupling 4 are here shown and described as separable pieces, they may if desired be made in a single piece. Iiurthermore the upper and lower plungers may be constructed with a greateror less number of disks and washers than are illustrated.

It will be noted that in my pump there is an opening `at the lower end of the cylinder through the bottom check valve; As a result sand and gravel cannot collect here. It will be noted that in my pump in case either oneof the plungers should become out of order the other will be permitted to operate in the regular manner. Hence the pump will operate to a limited extent even it one-or the other of the plungers fails to operate. i

lrlaving thus described my invention, what I claim as new, and ters Patent, is: l

l. In a pump, the combination of a cylinder, two ditl'erent plungers therein arranged one above the other, the upper plunger being of larger diameter than the lower and the upper portion of the cylinder where the upper plunger is located being ot' greater diameter than `the lower where the lower plunger is located, and suitable check valves associated with said plungers, one of said valves being located between said plungers and having a taper lseat whereby itmay be lifted from its seat by the lower plunger.

Q. In a pump, a cylinder which is of larger diameter at its upper portion than at its lower portion,`a taper valve seat at the j unetion of the smaller and larger portions pi said cylinder, a piston rod, two plungers secured to said rod, one being located in the smaller and the other in the larger portion of said, cylinder, and suitable check valves, one of which is adapted taper valve 'scat whereby it and said plungers may be withdrawn from the cylinder by withdrawing said pisf l ton rod.

` plungers secured to said lcated in the smaller and desire to secure by Leti portion ,a check valve upon each of said plungers, another cheek valve beneath the lowest plunger and a fourth check valve seated upon the aforesaid taper seat.

at. .In a pump cylinder which is of larger diameter at its upper portion `than at its lower portion, a taper valve seat at the junction oi' the'slnaller and larger portions of said cylinder, a pump rod, two plungers secured to said rod, one beinglocated in the smaller andthe other in the larger portion of each cylinder, a check valve upon each of said plungers, another check 'alve beneath thelowest plunger and a fourth check valve being a lateral opening in the cylinder beneath said taper th'e purpose described.v j

5. in a pump, in eonibinatiou,

seated upon the aforesaid taper seat, there side of the' valve seatfor a cylinder which is of larger diameter at its upper portion than at its lower p'ort1on, a, taper valve seat at the junction of' the larger and vsmaller portions of the cylinder, a hollow -bottom check valve for withdrawing it.

6. In a pump, in combination, acylinder which is o larger diameter at its upper portion than at its lower portion, a taper valve seat at the junction of the larger and smaller portions o the cylinder, said cylinder having openings in its side at said junction, a hollow piston rod, two plun,f: ;ersv secured to said rod, one in the larger and one in the smaller portion oi' said cylinder,

carried by each of said plungers, another check valve seated in said taper seat, a taper seat in the smaller portion ofthe cylinder plunger, and a bottom check valve in the last mentioned seat, said lower plunger being adapted to screw onto said bottom check valve for withdrawing it.

In witness whereof, I have hereunto sub-f scribed my name in the presence of two witnesses. i

I EDWIN W. CLARK.

lVitnesses:

HOWARD M. Cox, C. J. ClRIs'roIgrnL.

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