US1112099A

US1112099A - Balanced automatic air-lift.

Info

Publication number: US1112099A
Application number: US79033913A
Authority: US
Inventors: Norman R Smith
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-09-17
Filing date: 1913-09-17
Publication date: 1914-09-29
Anticipated expiration: 1931-09-29

Description

Patented Sept. 29, 1914.

N. R. SMITH. BALANGED AUTOMATIC AIR LIFT.

APPLIOATION FILED SEPT. 17, 1913.

WITNESS ES:

UNITED sTATEs `PATENTOFFICE. i

Y NORMAN RlSMITH, OF RED BLUFF, CALIFORNIA.

IBALNCED rAUTOIVIA'IIC AIR-LIFT.

`. Specificationiof Letters'latent. i Sept. 29, 1914:.

Application med september 17, 1913. .f `serial No. 790,339.

T0 all whom t may concern: Y z p Be it known that I, NORMAN R. SMITH, a citizen of the United States, residing at Red Bluff, in the countyof Tehama and .State of California, have invented new vand, useful;

Improvements in Balanced Automatic Air- Lifts, of which the following is a specifi` cation. l y, i This invention relates to a balanced airlift pump. y

It is the object of this inventionto provide a pump by means of which a large vol-` ume of liquid can be raised with the eX- penditure of a' comparatively small amount l on the lower ends of the pump cylinders. and means for reciprocating the pistons in" relation to the pump cylinders by which alternate charges of liquid and air will be forced into the pump cylinders.`

The invention further consists of the parts i and the construction and combination `of parts as hereinafter more fully described and claimed, having reference to the accom-'5 panying drawings, in which- Figure 1 "s a front elevation of the-invention, with parts broken away. Fig. 2

is a side elevation, with parts broken away. Fig. 3 is a detail vertical section of thevlower portion of a pump cylinder, showing theI piston and valve construction. .Fig.4`is a detail perspective view of the valve inthe piston.

support for the pump which extends vover the upper end of the casings A and Bf Mounted on the frame 2 is a `rock-shaft '3, carrying a walking-beam 4. *"Pivotally mounted at 5 to the walking-beam 4, 'at

equal distances on opposite sides of the rock-shaft 3, are

tubular pump casingsl

6 and 6 which extend downward into the liq.- uid contained in the casings AandB; and

jextend upward asuitable distance above thev walking-beam 4, and are formed with a horizontalopemended portion f7 lleading to any suitable pointI of discharge. The pump` casings `6 and 6 are off corresponding` weights and dimensions so as to be normally balanced on-the walking-beam4- Mounted on thelower end of each pump cylinder and 6 is a foot-valvewhich essentially consists of a ball 8 slightly smaller than the inside diameter ofthe pump cylinders and normally seated on-.a valve seat 9, to` close an inlet opening 410. `Surrounding "the lower end of each pump cylinder ,6` and 6 is-a cylindrical hollow piston 11 which is adapt` ed to have slidable movement exterior to the

pump cylinders

6 and 6". Piston rodsv 12 connect with the pistons 11 and extending upward are secured to sleeves 13, slidable on the pump cylinders. The sleeves 13. are

connected to the outer ends of the walking beam 4, by means of links 14, in such manl ner that when the lever is rocked the pistons 11 will be reciprocated on the lower ends of the pump cylinders in opposite directions.

The lower endof each piston 11 Ais provided with a cone-valve15 which extends horizontallythrough a casing formed in the piston 11". VFormed in thevalve `15 is a portlG which is designed to register with ports 17 between the interior and the exteriorof the piston l1-1 at its lower end. The valve `15 is adapted to` be turned to close the ports 17', and is operated by means of a rocker-arm .in the` valvecasing to open communication i.

18, pivoted at its center onthe sleeve13and connected at its ends by cables '19, or their equivalents,` to 'the ends of a cross-baryQO, rigidly mounted on the valve 15. The 'oper- 'ation of the rocker-arm 13nis effected by lmeansxof stop-pins 21 and 22 extending into the path oftravel ofthe rocker-arm 18, vand arranged to engage the latter to 1rock it at the upper, andlowermost positions of the l i Y. sleeve 13.# rlhe valvef15 is also formed with In the drawings A and B represent ai pair 0 of Well casings, and 2 indicates ai timber a port 23 "which is adapted toopen communication between the interior o'f'the cylin.

der `11 'and the atmosphere `through a pipe the form of a channel or depression in the faceof the valve 15, which'is positioned to register with a port 25 opening to the interior of the piston 11 andV with the open l terminal of thepipe 24.

vin opposite directions so thatY when oney pump-cylinder is in its iujperm-ost position the pump-cylinders are thus positioned, the pis-ton 11 onthe lfofwermost pump-cylinder will". bein its lowerm'ost position and the lvalve.lgthereon willbe disposed with the port 16.registeringwith the ports 17, so that i the4 liquid .in the well iwil-l 'How into the space e positioned.' l

between thevalve `Sand `the lower end ofthe piston-.11, andthenee iin-to the pum-p cylinder, through the 'iiootevalvd .as will-be later described. `The piston 11 onthe uppermost pump-cylinder will-be in its uppermost position andthe valye'l Vwill be -disposed with the. port-23j registeringlwith the port 25 and the. open lowerl end 0.1": 'the pipe 241; the ports 17 being closed when the Vvalve 15 is thus 'llhe cycle. of operation ofv one of 'the pump-cylinders will'nowfbefas follows: On

valve-8;v through the pipe `the liquid inlet ports 17.

the downward movement of the uppermostiv ypiiiirnp.-'cylinder7 the Vpiston 11 thereonwill be caused'fto move downward away from' thel lower. end ofthe. pump-cylinder, thereby drawingair into the! space below the ooti e 2li, and

ports

23 and 25,4y When the 'pump-cylinder nears its lowermost-'p'osi'tion the rocker-*arm 18 will be engaged fby the pin. 22v and thereby be rocked in such .manner as to rook the valve V15 to close'the -alir inlet ports 25 and open y l The pressure of" 'the vcolumn of liquid in 'the well 'casing wililj nowoperate to forcethe air trapped in the piston 1.1 upward., through the foot-valve S,-

Vintothezlmver end of the pump-cylinder; the 1 being. llifted by the 'n pressure therebe-` neath.. The air will pass around the ball of the *lfoot-valvein a state 05E compression and will. :form anA air piston inthe pump-cylinder Q abovefth'e .foot-valve, which.` air ipiston will bemoved upward the pump-cylinder by; the inllow of liquid which will lenter the 1 pump-cylinder. untill the .determined quantity is withinthe pump-cylinder, whereupon i the iniiow `is cut oil at the terminati-on of the upward stroke. The upward movement of- -the air piston will `lift the column of liquid;

tfhereabove, and when the pumpbylinder is full, will cause la. quantity of liquid equal in v'olumeto that last taken in to be discharged Vfro'inthe. open upper end'of the pump-cylinder. k

When the desired amount 'ofjliquid hasl f beenv forced-.into the upward 'moving puinp- 'eylinderthrough the open port 17, the upyclosing of the port 15 iseiiected. The

ward stroke is terminated by means of the hand-lever 26 and its connections and the The pressure from the liquid in the well is shut oli' from vthe pump, thus causingthe weight of .the liquid in the uppermost pump-cylinder to close the ball valve and prevent back flow into the piston 11 on the down stroke of the latter. The pump-cylinder on now being` the other pump-cylinder will be in its lowerl most position, as shown in F ig. 1. When moved to its upper-most position, the piston 11 will be restored to its uppermost position; the vialve 15 being operated b y the rocherarm L'18 stri-king the pin 21 so as to close the port 17' and openthe port 25 to the atmosphere when the piston 11 is in its uppermost posi-tion. r'Ifhis completes the cycle of operation ofl one of the pump-cylinders; the other pump-cylinder operating in a like manner.

It will be seen that when the pump is in operation the pump-cylinders will be filled with `alternate layers 'of liquid and air, as shown in A31; thefpump-cylinders being of isuch diameter and the volume of air de- -liveredthereto of such: quantity that the air pistons form-ed in the pump-cylinders will i not be bro-lien by the 'capillary attraction of the liquidr in the .pum-fpcylinders By thus forming alternate layers or strata of liquid and air in the pump-cylinders the weight of the:column: oi liquid in the well will. operate to elevate the upper layers of the liquid in the pump-cylinder to a point above the surface of the liquid in 'the well, when. the pump-cylinder is in its lowermost position, `and to a point where equalization of pressure willf be established.

By terminating the upper" end of the piunpecylinder at a point below the height at which the liquid can be raised in the pumpecylinder by the external. pressure of the liquid in! the well'7 a. quantity of the liquidr in the munir-cylinder will be. discharged when the ports 17 are open, which .is whenv the cylinder is in its lowermost position and during its upward movement; the discharge from thel pump-cylinder ceaswhen the ports 17 are closed or when the pump-cylinder is raised to a point at which the column of liquir and air in the 'pump-cylinder will exert a pressure equal to--or greater than the pressure of the liquid in the well.

The discharge opening of the pump-casing is preferably arranged at a point just below the Amaximum liit of the liquid columndin the. well when the pump-cylinder is in its uppermost position so that there will: ybe a discharge from the pumpbylinder on thefmajor portion of its upstroke, thusiieeing the pump -cylinder ol the weight of the column oi liquid therein during its upward movement; the column of liquid inthe cylinder being then supported bythe pressure of the liquid in the well. lB'y' this :arrangement the weight oil the eolumn of liquid confined in the downwardly moving pump-cylinder will assist in moving the other pump-cylinder upward on the iirst half of the stroke. i

It is important that the foot-valve 8 be formed of a loose ball, as the globular formation facilitates the flow of the alternate charges of liquid and air and insures the formation of the liquid and air in alternate layers.

rlhe quantity of air delivered to the pump-cylinder is regulated by adjusting the length of stroke of the piston 1l which is accomplished by connecting the links 14 at various points on the walking-beam" e in' relation to the pivot 3. For this purpose a series of perforation ll are formed in the beam l which are adapted to receive the pivot pin at the upper ends of the links.

The ports 17 are designed to remain open throughout the upward movement of the pump cylinder; the amount of liquid passing therethrough and entering the pump cylinder being controlled by the speed at which the walking-beam is rocked.

Having thus described my invention what I claim and desire to secure by Letters Pat` ent, is i l. A pump-cylinder comprising a pairof reciprocating pump -cylinders, means for moving said pump-cylinders simultaneously in opposite directions, and means for delivering alternate charges of liquid and air to the pump-cylinders on the reciprocation thereof. i

2. In a pump, a pair of reciprocating pump-cylinders, means for moving said pump-cylinders in unison in opposite directions, pistons on the lower ends of said pump-cylinders, means for reciprocating the pistons in advance of the pump-cylinders, and means controlled by the reciprocation of the pump-cylinders and pistons by which alternate charges of liquid and air will be delivered to the pump-cylinders.

3. In a pump, a pair of reciprocating pump-cylinders, means for moving said pump cylinders in unison in opposite directions, pistons on the lower ends of said pump-cylinders, means for reciprocating the pistons in advance of the pump-cylinders, means controlled by the reciprocation of the pump-cylinders and pistons by which. alternate charges of liquid` and air will be delivered to the pump-cylinders, and means by 'which the weight of the liquid in the well will operate to force the liquid in the pump-casings to discharge.

fl. In a pump, a walking-beam, a pair of balanced pump-cylinders on said walkingbeam, a piston on the end of each of the pump-cylinders, connections between the walking-beam and the pistons for reciproeating the latter, means controlled by the piston for trapping air in the pump-cylinders, andv a valve in the piston for admitting liquid to the pump-cylinders.

5. In a pump, a reciprocating pump-cylinder, a foot-,valve thereon, an external pisi ton, means by which said piston will trap air below the foot-valve to form an air' piston, and valved means for admitting liquid to the pump-cylinder by which the eX- ternal pressure of the liquid in which the v valve, stops for actuating the rocker-arm on the up and down strokes of the pump cylinder to operate the rock-valve and admit alternate charges of liquid and air to the pump-cylinder.

7.'In a pump, a walking-beam, a pump cylinder on said walking-beam arranged approximately midway between the outer end ofthe beam and its pivotal mounting, a sleeve slidable on said pump cylinder, a link connecting the sleeve to the walkingbeam, a. piston on the exterior of the pump casing at its lower end connected to the sleeve, a rock-valve in said piston, a rockerarm `on the sleeve connected-to the rockvalve, stops for actuating the rocker-arm on the up and down strokes of the pump cylinder to` operate the rock-valve and admit alternate charges of liquid `and air to the pump-cylinder, and means for regulating the volume of liquid and air admitted to the pump-cylinder. l

8. In a pump, a walking-beam, a pair of balanced pump-cylinders on said walkingbeam, a piston on the end of each of the pump-cylinders, connections between the walking-beam and the pistonsfor reciproeating the latter, means controlled by the piston for trapping air in the pump-cylinders, a valve in the piston for admitting liquid to the pump-cylinders, and means for adjusting the lengthof the piston stroke.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses. i i,

HAZEL BREARCLIFFE.

Copies of this patent may be obtained for ive cents each, by .addressing the Commissioner of Pat nts,

Washington, D. C. i

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