US2334148A - Pump - Google Patents

Description

Nov. 9, 1943. w. A. JONES 2,334,148

PUMP

Filed June 25, 1941 5 Sheets-Sheet 1 2 I ENTOR Nov. 9, 1943. w. A. JONES 2,334,148

PUMP

Filed. June 25, 1941 5 Sheets-Sheet 2 a? ll INVENTOR.

W/Z 1 4M 4. JO/V1515 1943- v w. A. JONES 2,334,143

I PUMP Filed June 25. 1941 5 Sheets-Shea; 3

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4 r TO/PNFP- Nov, 9, 1943.

W. A. JONES PUMP Filed June 25, 1941 5 Sheets-Sheet 4 INVENTOR.

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Nov. 9, 1943. w. A. JONES 2,334,148

- PUMP Filed June 25, 1941 5 Sheets-Sheet 5 7 m INVENTOR. r 1 -W/ll/4M4 ua/vra,

- Patented Nov. 9, 1943 UNITED ST TE PATli.

I PUMP .William Jo11es;,stamrord, 0111111., as si gnor top k American Cyanamid v A Company, NewYork, N.YY., a corporation of Maine i a v i .Application June 25, isirserial No. ssassi i izciti'i iisg (c1; loaf-.149);

The present invention relates tof a1 {pump mechanism. 1 v I q The principal object of thetinventionc';isito providea device of the above charactercapable mittently. 1 1, 1

Another object of theinvention is toyprovide a pump in which the amountof liquiddelivered at each impulse may beaccurately controlled and which amount may be adjustedat Twill through wide limits, even while the device is'in operation. 1 1 1 f Another important object is to provide atdevice of the above character which is'sturdy in of delivering uniform quantities of. liquid flinterconstruction, compact in arrangement, capable and 1 1 1 Fig, 8 is a sectional view along the line 88 Fig. 5 is a view along the.line 5-5 of Fig; 1; Fig. 6 is a perspective detail of the casing p per; l i

. Fig. 7 is agside view of a'modifiedassembly;

Referring now with particularity to the. de- 1 vices illustrated, a frame is shown generally at 1 as an electric motor, or the like, supplied with upon which is mounted a primemover 2; such current from a suitable source (notlshown) and of being easily cleaned and which has few parts to get out of order. 1 a V The invention in itsbroadest aspect contemplates a pump of the Huber type for receivingliqe uid from a supply and moving it to" a' point of delivery with means "for intermittently operating the pump so as todeliver varying quantities' ofliquid tothe desired point.

The Huber pump comprises generally a length of collapsible tubing held within a casing having an inner wall with a plurality of rollers mounted for continuous contact with and collapsing the tubing against the inner wall. Thus; as each roller progresses along the tubing, it forces" liq} uid ahead of :it to the outlet where the 'liquid is discharged. i

1 The intermittent operating mechanism 'of'the present invention constitutes a prime mover such as an electric motor or -the like with or without theusual speed reducing mechanism} with avarying throw connecting-rod constituting the mechanical connection between the prime mover and an oscillating arm serving tolcauserotation having a standard type of speed reducing mech- 'anism enclosed within'a housing 3.

'Aneccentric crank 4. is driven by the motor and carries a stub shaft :5 terminating in a block 6- andheldi within a radially-extending, guiding slot inwthekeccentric 4.. The-block 6,.carrying1 the stubishait 15, may bermoved in this slotby means of r the 1 threaded shank, which .passes therethrough; and'terminates in knurled head' B, I Aoconnecting rod 9 is fitted at onee'nd: to the stubxfshait 5 .and held thereon bymeans of knurled nut land at the' otherie nd is pivoted as at H to a. guiding block 12.5 The block I 2 rides within a hollow oscillating arm Hand is "carried by athreaded red It. This rod is fixed within ajourhal member 1|5-thr0ugh which it passes, by meansof 1 collar l6 1 and knurled f ad-i jus'ting knob l'l. The oscillating arm 13 a is' clamped within. an extensionof the journal 15. Thus, rotation; of the knurled adjustinglznob 1 I 1 causes movement'of-theguiding block [2 within of the squeezing roller in an intermittent manr neri. Inasmuch as, both ends of the'connecting rod are adjustable, the extent of its throw may be readily controlled even While the ,device is in operation, to adjust-the amount of liquid delivy ered by the pump. l 1 1 The invention further consists in the novel construction, arrangement and combination of parts more fully hereinafter desc a dfi fiw in the accompanying drawings, in which Fig. 1 isa front view of 'a device embodying the present invention;

partly in section;

Fig. 3 is a rear view 'of'the 'devicefo f Fig] 1; 1 Fig.4 is a detail view showing the mannerj of 65 removalof the tube casing; I

Fig. 2 is a view along the line ZI-i-2 of Fig il,

' 'notc-hes ZI, each ofiwhich'tis located a toner 22; The rotor 20 fits closely'within the ournal lfi and moves with the shaft l9. i

. I From Fig. 3 itwill beseen that when the journal I5 moves'in a' counterclockwise direction, the rollers 22 also move in a counterclockwisedirec tion or into the widest-portion of the notches 2l'] with the consequence that rotation dffthe -the pump shaft I91? Rotation of the journal I5 in" a clockwise direetionlflcauses 'rolle'rs 22 to be moved clockwise and 'intothe" narrower portions wallthicknesses are .used. 1

rotor and the journal IS. AS a result, the shaft [9 is driven in a clockwise direction by the journal [5.

, 'Thus, rotation of the eccentric 4 c-ausesoscillation of the arm i3 through the connecting rod 9 and throughthe clutch mechanism intermittent clockwise. movement of the "shaft IS.

The vpumpfn'i'echanisrn proper includes a'casing indicated generally at 24 having a substane tially rectangular rear wall 25. The casing 24 is mounted on the frame l withits lower exten-Z sions 26 seated upon a pair of positioning sup: 1 ports 21 and held there'bymeans of upper and? lower pairs of retaining ears" 28'jon the frame,"

., .outer edge. I

type of adjustment and makes possible with a- I 1 suitable sized tubing, 2. feed of even so small a which engage the front of the rear wall125 of the casing. These parts are so arrangedfithatWhenthe casing is in position, its center. will accurately coincide with the center of shaft l9.

' On the pump. shaft. 5.9. isxmounted a rotary wa11:29 carrying-:3,- stub shaft, Eilprovided with a ball bearing mounted roller 3|; From Fig: 2,.it isto benoted: thatithe innersurface of. the rotating wall 29 is substantially flush with the inner face, of. the casing. 24 .and that the; upper edge of the circumference of the roller 3| is spaced slightly fromfthe' cylindrical inner wall of. the

casing. I

A. convolution ofcollapsible tubing 32. is ariranged within the casing having. an inlet portion,

33. and a delivery portion '34, the roller and tubing 7 being sopo'sitioned.thatthetubingiscompletely I collapsed between the roller and-the inner wall of the-casing. .Consequently,.as the roller rotates in a clockwise direction *(Fig; 1). liquid within the tubingbetween the roller 3| and-thedelivery end 34: is Jmoved toward the outlet in. an: intermittent manner, inasmuch as the roller. is. intermittently moved. At. the same. time; liquid withina.that

portion ofuthe'tubing.33xfollows alon'gbehind the roller. sofas itozkeep .the' tubing, full of liquid" .It: will be seenthat any desired size of tubing maybe used, itbeingxonly necessary to..change.

thesize of, the roller 3l where tubing of difierent the-inletportion-of the.I-tubing is held within; an aperture- 35 .-andthe/delivery end 34 withinv an,,aperture 36,. the tube'is accurately held in place. It is desirable to lubricate thesurface, of the, tube so that theroller. 3i. willjnot ,cre,

atea tendencyof the ,tube;to creep. Y

- position shown in Fig. 3.

of their notches under the impulse of coil springs 23,thus making a wedge connection between the pound crank mechanism is provided between the prime mover and the pump shaft I9 for moving the latter intermittently. The adjusting knobs 8 and I1 permit adjustment of the throw and this compound crank, thus determining the feed of liquid through the outlet 34 of the tubing.

For instance, adjustment of the upper head 8. makes possible the movementof the upper endof the connecting rodf9 from dead center onf the eccentric, where no feed will result, out to its This, therefore, permits of the finest quantityas a fraction of a drop.

" "Adjustrnentfofithe knurled knob I! at the jour- Yn'al I B'wiIIfdtermine the relative position of the lower end lof "the connecting rod 9 and consequently, -the degree of oscillation of the arm 13.

Forinstance, when the end of the connecting rod is in'the position shown in Fig. 1, it will have considerably less movementsthanitwon ld Lin/the Thus between the two adjusting nuts; any-idegree-;-,of mnvementz oft theirollerf. 3.1-; may: be. Oh,-

tained upon asingle revolution .of: the eccentric A, In Figs. '7 and 8, a slightly modified; former assembly, is :shownu Here thesconnectingi rodis, attached latiits lower? end toean. oscillatingiarmdimounted qr,

rectly on,.the-fixed;fstud. IS. without adjustment means at; thispoint-s The same: typefi j clutgh mechanism is shown as has been previously; de; scribed for making an: int rmitt n d ivin .29

nection-betwecnth o ci lati arm. 4% an the numpshaftwsf a I In thezpresent m dific tion, how er thesesing which contains the collapsible tubing; is of sli htlyz d fieren orm-1' t i i d ca-ted, g neral y at s "being nfie t. a. part o t e bas and alsoqserving .to 1 support; the prime moverv 2-. as

shown. the es n has ninne r e efi a'geint whi h neor mo e-leng hs 0i r b er t b n 45 and "1 e bing-i ,heldz np aqebrme ns ofclamps 48 The. p m sh ha meu eo 9.

he pump side-.o .e de i e, a ro a ing ear wall-A9 on which is eccentrically, mountedaplu,

r ity of tub n u n r r .5" a The? rollers are so arranged with relationtmthe inner sti lness-.45 q the a ine and 'th QSs I the tubing used, that as the rear wall 4Srotatesth'e .tubing willbecompletely collapsed between-the If forfany reason it: is desirable torem, ve-the casing-with its contained tubing'for replacement,

repairer ad iustmenuthe lever 31 is moved from the position ShOWnin Fig. 1,110 that of Fig. 4 withjthegresulttthat the camp38 is released from the topjofthe rearwall 2510i" the casing. Under the impulse ,of :coil springafifi. (Fig. 2), the finger 40 pushes the casing Zllgupwardlyinto thel losition shown in Fig; 4.1 'I he recesses 4| in the rear wall I 25fofthe, casing permit clearance of. the

retainingears 128;, and, the casing may be; then withdrawn in a iO Ward direction. The casing may be :replaced by reversing the above opera tion. Y

Aknurled end of, the-pump-shaft 19 adjacent the rotor 20 for thepurposeof setting the positionor' the roller 3|, since it'is necessarythat thisroller be loc te at'z upp ndi t i k wh n he rubber tube assemblyj is,:-removed or 1 replaced.

This position; illustrating} the clearance." between the roller and the rubber tubing is shown in Figgl.

Fr m the shore-it wi b en t t 9 1 1- hand-wheel is secured to "theoute r,

. r011er..a dz the m er W l and that th e a wi always, be a rollerzin col ap in con act:- W h the. tube; Consequently, a; flowof liquid. through m tubeiz may alwaiys be -;0btained so long asthe-repr wall; is being rotated-in a pumping; direction. The, casing; is 5 provided; with: a. front plate. 52

having a. series'fof ears 53 engaging:screwqthreadied studs, the wall being held in placebysuitable While' two lengths of tubing are'shown, yet-zany number can be usedj dependent'uponthe depth of the casing and the size of thetub'es. J Where a plurality'of independentlengths of tublng are 7 used as shown, it'permits-of a multiple feedde vice wh h i somet m de i b e;

It. willf be v m moved by'simple removal of l the; irontfiwallj 52 andlooseningbf the clamp' r'nembers 48. I It, will also be seen that "in the same way thefrollers 50 and BI can.be;ren1oved from. their. stub Shafts -3 0, .-at this time, as the front wall 52, serves; to holdthem'inplace.

knurled notedthat the tubing ay be re gram-4s The device'of; the invention-may,besuccess fully used to feed liquids of any characterin a fsirable where, for instance, reagents are being fed toa reaction inenstruum where an adjustment once fixed, should not be changed through mere temperature changes. Again, such a deviceis particularly desirable in the-feeding of accurate amounts of very small quantities, such for instance, as perfumes or biological products into ampules or the like. In such cases, fractions of drops may readily be accurately delivered by the simple expedient of restricting the outlet end of the tube 34 as by means of a glass tip or the like (not shown). n the other hand,'the device maybe adjusted to deliver much larger quantitiesof liquid where desired.

While the invention has been shown and described with particular referenc to specific embodiments, it is to be understood that it is not to be limited thereto, but is to be construed broadly and restricted solely by the scope of the appended claims.

1. A pump comprising a length of collapsible tubing held within a casing having an inner surface, said casing havinga rotatable wall, a roller eccentrically mounted on said wall' and making contact with and collapsing the'tubing against the casing surface,.a shaft for rotatingsaid wall and means for intermittently rotating the shaft in one direction including an over-run clutch.

2. A pump comprising a length of collapsible tubing held within a casing havin an inner surface, said casing having a rotatable wall, a roller eccentrically mounted on said wall and making contact with and collapsing the tubing against the casing surface, a shaft for rotatin said wall, a prime mover for rotating the shaft and a clutch between the prime mover and the shaft for intermittently rotating the latter.

3. A pump comprising a length of collapsible tubing held within a casing having an inner surface, said casing having a rotatable wall, a roller eccentrically mounted on said wall and making contact with and collapsing the tubing against the casing surface, a shaft for rotating said wall, a prime mover, an over-run clutch between the shaft and prime mover, and a compound crank mechanism connecting the prime mover with the shaft.

l. A pump comprising a length of collapsible tubing held within a casing having an inner surface, said casing having arotatable wall, a roller eccentrically mounted on' said wall and making contact with and collapsing the tubing against the casing surface,,a shaft for rotating aid wall,

a prime mover, an over-run clutch between the shaft and prime mover, and a compound crank mechanism connecting the prime mover with the shaft and means foradjusting the throw of the crank mechanism.

5; A pump comprising a length of collapsible trio and a connecting rod,

6. A pumpcomprising a length of collapsible tubing held within a casing having an inner sur face, saidcasing having a rotatable wall, a. roller eccentrically mounted on said wall and making contact with and collapsing the tubing against the casing surface, a shaft for rotating said wall,

a prime mover, an over-run clutch betweenthe shaft and prime mover, and a compoundcrank mechanism connecting the prime mover with the shaft, said compound crank including an eccentric and a connecting rod, the eccentric connecting the prime mover with the connecting rod and means to adjust the relationship of the connecting rod to the eccentric, for varying the movement of the rod.

7. A pump comprising a length of collapsible tubing held within a casing having an inner surface,said casing having a rotatable wall, a roller eccentrically mounted on said wall and making contact with and collapsing the tubing against the casing surface, a shaft for rotatingsaid wall,

a prime mover, an over-run clutch between the sible tubing held Within a casing having an inner cylindrical surface, saidcasing having a rotatable wall, a roller eccentrically mounted on said wall and making contact with and collapsing the tubing against the cylindrical surface, a shaft for tubing held within a casing having an inner surface, said casing having a rotatable wall, a roller rotating said wall, a prime mover, an over-run clutch between the shaft and prime mover, and a compound crank mechanism connecting the prime mover with the shaft, the compound crank mechanism including a connecting rod, a rotatable eccentric between the prime mover and one end of the connecting rod, and an oscillatin arm between the shaft and the other end of the connecting rod and means adjacent each end of the connecting rod for adjusting its throw.

9. A pump comprising a convolution of collapsible tubing held within a casing having an inner cylindrical surface, said casing having a rotatable wall, a roller eccentrically mounted on said wall and making continuous contact with and collapsing the tubing against the cylindrical surface, a shaft for rotating said Well, a prime mover, an over-run clutch between the shaft and prime mover, and a compound crank mechanism connecting the prime mover with the shaft, the compound crank mechanism including a, connecting rod, a rotatable eccentric between the prime mover and one end of the connecting rod, and an oscillating arm between the shaft and the other end of the connecting rod and means adjacent each end of the connecting rod for adjusting its throw, capable of being manually adjusted durfor intermittently rotating the shaft in one direction including anover-run clutch.

m theecce ntric' connect ing the prime mover with the connecting'rod.

11 A pump comprising a, convqlutiqn -of c9 lapsible tubingheld within a casing having an inner cylindrical surface, said ,pasing having a 'rofiat'ab le wall, a. rollefeccentrically mounted on said wall and making continuous'gontac-twith and collapsing the tubing against the cylindrical Surface, a. shaft for rotating said Wall, a, prime inove'r for rotating the shaft and Q. clutch between the prime mover and the shaftflfor interml ttent'ly rotating the latten.

12. A pump comprising a length of cbllaiasible tubing held within ayeasing mvm an innermiacq s aid casing having arotatable wal1,;.a p19 rality of rollers eccentrrfi-cally mounted on l an soar an qc a we will a s b 5 atl east une roller making contact withand p01- m an over-mnclutch.

laps'ing the tube againstthe casingwall, -ashat$ for rotating said-walls and. means for intenmittently rotating the shaft in one direction incl-14-

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