US1164926A - Pump. - Google Patents

Description

E. W. CLARK.

PUMP.

APPLICATION FILED IAN.29, I9I4.

Patented Dec. 21, 1915.

. ImIR m IIMWV reciprocating parts f are surface of the for 'continually EDWIN w. CLA CHICAGO, immers.

. PUMP.

To all wvom' may concern y Be itl known that I, EDWIN W, CLARK, ka citizen of the United States, residing at Chicago,in the county of Cook and State lof Illinois, have invented a certain new and useful Improvement in-Pumps, of which the following is a specification.

My invention relates to pumps, and the object of the invention'is to procure a practical and sure `acting 'pump which may be lowered to thebottom of a well or cistern and operated by air or other gas under pressure conveyed to th'e'pump itself and dispensing with pump rodsor vother reciprocating parts operated mechanically from the ground and leading down through the'well to the pump cylinder. The ordinary deepwell pumps operated 'by pump rods have certain inherent disadvantages,

one disadvantage residing in the necessity overcoming the inertia y of the pump rod and connected parts which are necessarily heavy, especially where the well is of considerable depth. Heretofore no commercially successful pumps-haine;v been produced, so far as Iam aware, in which all of thereciprocating parts were confinedto and combined in a single pump cylinder located atthe bottom of the welll and operated by compressed air delivereddirectly to thev pump cylinder. Y

The object 'of my invention is to produce a fluid actuated pump in single cylinder located at the bottom of the well, the parts being so constructed andarranged'as to render the operation certain, the flow continuous and uniform and Vto avoid the possibility of delivering air instead of water through the delivery pipe.

I accomplish my objects by the construcdraw' ings in which.- i

Figure 1 is ia central section of-thepump cylinder.` Fig. la is a sectional viewof the central vportion ofthe' pump cylinder taken taken on an irregular plane of sectionv whichl on the irregular lineA la, la, Fig. 2. F ig.

Ilb is a central vertical section of the lower portion of the pump cylinder, .Figsg 1 a nd` b' are shown in theiry properjuxtaposition except vthat the central portion, (Fig. la) is renders the view more o'r less','diagrammatic' and thus facilitates an understanding of the principle of operation.` Fig. 2 is a horizontal section' on the line 2-2, Fig. *1* Fig. 3`

' proper,

which all of thelocated within a Patented. Dec. 21, 1915.

' Appncanon med' January 29, 1914. serial No. 815,121.

-is a horizontal section on the line 8-3, Fig. la.A Fig. 4 is a horizontal sectionon ythe line Fig. l". Fig. 5 isa side elevation, partly in section, of the -main inlet and outlet valves.

Similar numerals refer to similar parts throughout the several views.

In the form selected-to illustrate the invention the cylinder consists inV general of the center casting 1, the upper and lower sections 2 and 3 respectively and the upper `and lower' end castings or caps 4t and respectively. The center casting constitutes a valve chamber land has lianges la, la, projecting upward and downward from the chamber said Hanges being internally screw threaded to receive therthreaded ends ofthe upper and lower cylinder sections. The upper and lower end castings are much alike inl construction and by'preference simply fit over the upper and lower ends of the upper and lower cylinder 'sections being held in position by tie rods 6. Eachvof the end castings or caps has an inlet chamberA 7 and an outlet chamber 8. rlhere is an inlet port and valveseat 9 inl each ofthe upper and ylower end castings interposed between the inlet chamber 7 andthe inside of the cylinder. An'inlet valve 10 is located at'each of said ports 9 and is so arranged as to permit water to flow through the port toward the cylinder butprevent flow in the opposite direction.

While the exact form of valve is not an essential feature of the invention, it is preferably constructed as shown separately in Fig. 5' in which it will be seen that the valve has a 'plurality of vertical ribs 10a leaving The-nut is located far enough from the lugs l0b to permit the valve to open and close.

An outlet valve l1 1s mounted in each of the end castings 4 and 5 to control the flow from the cylinder tothe outlet chambers'S. The outlet valves aremounted'in the valve seats 12 which form outlet ports and are constructed exactly likev the vinlet preferably rlhey -arefplaced in such a man'- valves 10. ner however,

as to'permit the flow from the" tot I IMS 43 land the result being that'when the air Xie:

cylinder but lprevent y flow. into `v-`the i cylinder. A delivery pipe 13 screws into'the upper casting and leads from the upperoutletf chamberl tothe surface `of the ground or other point of delivery.- Aby pass 14 connects the outlet chambers 3 in the upper and lower end 'casting vare' placed at the admission :ports 4a and 5a. of the upper and lower end castings re* spectively.

Thev center whichin the'forin shown' consists of 'an outer `disk-24, an inner disk 'and cup leathers 26 interposed between them. l These disks screw onto the; ends of the pistonrod, and

. theyinner disk in veach casehas `a hnb27 for. engaging the respective strike plates 301 to which I will now describe. f

The inlet chamberlinpthecenter cast.-

thereby operatel the air. controlling devices ing 1 communicates with the-inside ofthef.

cylinder through the upper port and fvalve seat-32 and .lower port and valve seat 33. The. outlet/,chamber 17 communicateswithV the inside ofthe cylinderr through the up. per port and` valve seat 34 and lower port., andl valve seat 35. A .valve 36 is located within-chamber 16 andisfy so constructed as to vpermit-'air to flowv from the inlet; chamber alternately vto the upper and lower'v cyl-g inder-sections 2 and1 3.- A verticallyribbed stem 37 j extends upwardv and downward from valve 361through the ports 32 and 33,

and at the end of each of the ribbed portions of thestem are stops 38 against-which.

seat/helical compression springs 39. At the outer ends said stem passes through suitable, aperturesjin` the strike plates vand.. are.

there provided with nuts 40 whichfhold the strike plates seated, upon the outer endof springs 3 9. Extending "through-.the lout-v let chambei17 a vertically ribbedvalve stem .42 provided'with valves 43 'and 44 i located on the-outside of the ports 34 and 35 60 respectively. These valves 43 and 44 permit airto fiowalternately from the uppery i and lowercylinder sections '2, 3 intothe outletV chamberllf. Ity will be noted that the valve 36 is oppositely; arranged'to the valves @between the `Valves 43,

VBy preference strainers casting lfhas aninle't'chamber f -16 'and an outlet chamber 17 separatedbya partitionlS as 'best'sliown in Fig. v2. These chambers receive 'air only, and the -inlet'pj is*4 escaping' "dwiivadlyf from the inlet chamberf'l@ it willv escape downwardly to the. 'loutlet'chamber 17 and yvice versa.- The heli- Y cal compression springsn 39 are interposed 'strike plates" 30 and the parts are held assenibledv by fthe nuts inlet chamber.` .l

In operation, 'let ,-itfbe. assmuedffthatthe. parts areuin Athe relative` positions yshown in Figs. 11,';1a ,f13.. Under these conditions the air, will pass .downward -from'finletfchamberi6 and exert face ofthelower pistoni A tthesame time upper piston and hence .the pistonrodf'and 44` and the respective f 40,' as previously de.;VV lscribed in connection' with. the valve 'in the pressure upon the upperfsur-f` I air-will escape from the space beneath fthe attachedpartsgwi11-aesna., Thiswiugforce the Water outfromthe spacel beneath the lower 'piston .and ca .useitv to flowjipast the' loweroutlet valve11't`hrough.the by pass .14. and rip-*through the delivery .pipe 13. Thev f pressure inthe space below the lowerpiston willv hold thelower. inletgvalve closed-and` Vp'revent y'the escape of water-past it. The' ydescent of the upper piston 'will force-the air" attlie.`

out of the space -beneath it anc l.will, v same time permit thel pressure of vvaterfin'y the pipe; 13 tohold the upper 'outlet-,valve 11 closedt'o preventthe waterffrom thegbyf pass ;lfrom vflowing through said pipe 13.

saidgplate will be j'f o r `ced ,downward .and 'cause the reversal ofthe-'position offthe lanywhere' .except flip' 1 I This action'wi-ll con-` v tinueuntilthejjboss 27-onfthe u'pperf-pistonm reaches.the-upperstrikeplate 3,0 whereupon 100 valves y36, 43 .and,4 4." The flowofboth air and water lwill nowbe'reversedand cause thefrise rofthe pistonfrodfand connectedv parts, thus permitting thespace below the terlandffforcing the 'water fromth e}rspa ce piston out4 through thei-delivery-j1p ipe 13.y y

From 'the foregoing .description' takenj f connection with thel drawings `itwillloe evi- `A dent that, as hasbeen proved from .the prac f ticalfoperation of the device, 'mypump willr deliver a constant stream) of water. up .through thejj delivery. pipe but'thatjit is Apositivein its actionandcan-by no I accident (so .long as Iffwhenihe pane; 'ishuf tons and attached parts shouldistopin linter-v the parts are intact)- deliver. a'l'iythimegv butVV -rWater or whatever liquid itis thatsurrounjds vthe device.` 120' mediate position theweightof the airvalves *i said- 'valves toifdescclld tov their. r espective-A seats and thus` 'cause thegpistons i to rise .as

valves neverdepart very far!l fromV their` seatsand hence unless vvvalve 3:6 were,at. fth e` mathematical @enter Q- itsY travel the W soon-asthe; air is again-turned on..- VFurtlifer-f more, thepartsjare so designed thatzthegair f lesl the air valves air past it would tend to force it in `one direction or the other. In my device the piston rod passes through the center of the center casting. Thus the parts are all perfectly balanced. In my pump, also, all of are inclosed within the main cylinder. This not only protects the operating parts but renders it possible to group the entire mechanism in a small compass and hence it is possible to use my device in connection with driven wells where the well casing is usually of comparatively small diameter. No priming is necessary in starting up a pump of my construction and this avoids a disadvantage found in some pumps now on the market. As a result of my construction the moving parts are all small and hence there is no need to overcome the inertia of heavy parts such as the reciprocating pump rod in use in certain present day pumps. After my pump has stopped running the weight of the entire column o water from the cylinder to the surface of the ground or other point of delivery bears upon the water valves and hence great pressure is exerted to keep said valves tightly closed. For this reason the deliveryv pipe tends to keep full for a long period after the pump has ceased to operate and consequently the delivery of water at the discharge end of pipe 13 commences immed diately as soon as the air pressure is turned on.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: v

l. In a fluid actuated pump, a pump cylinder, an end cap at each end of the cylinder, each end cap having non-communicating inlet and outlet chambers, an inlet valve for each vof said inlet chambers, an outlet valve independent of the said inlet valve for each of said outlet chambers, said valves lying partially within and partially without the cylinder, two pistons, spaced apart and reciprocating in unison within said cylinder, a center casting in said cylinder located between the ends thereof and having an inlet and an outlet passage for the actuating fluid, an inlet controlling valve for the ac- Gopies of this tuatingiluid movably mounted on said center casting for permitting the actuating fluid l to ilow alternately into the opposite ends of the cylinder, and an outlet controlling valve for the actuating iuid mounted on said center casting and movable independently of the inlet controlling valve for permitting the actuating fluid toescape through the center casting alternately from opposite ends of the cylinder, the controlling valves being in position to be actuated by the said pistons.

2. In a fluid actuated pump, a pump cylinder, an end cap at each end of the cylinder, each end cap having non-communicating inlet and outlet chambers, an inlet valve for each of said inlet chambers, an outlet valve independent of the said inlet valve for each of said outlet chambers, said valves lying partially within and partially without the cylinder, two pistons, spaced apart and reciprocating in unison within said cylinder, a center casting in said cylinder located between the ends thereof and having an inlet and an outlet passage for the actuating fluid, an inlet controlling valve for the actuating fluid seating upon said center casting, and movable to two different positions for permitting the actuating fluid to flow alternately into the opposite ends of the cylinder, an outlet controlling valve for the actuating fluid seating upon said center casting and movable independently of the inlet controlling valve to two different positions for permitting the actuating fluid to flow alternately from the opposite ends of the cylinder out through the center casting, the controlling valves being in position to be actuated by said pistons and provided with cushioning means, a duct leading from the outlet valve at one end of the cylinder, and a by-pass leading to said duct from the outlet valve at the other end of the cylinder.

In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

EDWIN W. CLARK. Witnesses:

HARRY I-I. PORTER, LAURE'r'rA PORTER.

patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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