US2333045A - Pump - Google Patents

Description

1943- 1.. c. RbTTER ET AL.

PUMP

Filed Aug. 24,

1942 3 Sheets-Sheet l FIG.6.

Oct. 26, 1943- c. ROTTER ET AL PUMP Filed Aug. 24, 1942 3 Sheets-Sheet 2 FIGZ.

PUMP

Filed Aug. 24, 1942 5 Sheets-Sheet 5 mun Q vOE.

cant pumps. 1

i the drawings.

. Patented Oct. 26, 1943 e ArEs mm cmce 5,;

' PUMr I Lutwin i C. Rotter, Maplejwood, and ;August D.: 1

Reisert, Victor Klein, and Rudy F. Schnelle r; I St. Louis, Mo., a ssignors to Lincoln Engineering CompanygSt. Louis, Mo a corporation of Mis Application Augusta, 1942, Serial No. 455,852 11 claims; (c1. 221 -4.7.1)

This invention relates to pumps, and with regard to certain more specific features,- to-lubri- Among the several objects of the invention may be noted the provision of a lubricant pump driven by a continuously operating internal-combustion engine without 'de clutching the engine each time the lubricant flow is cut off; the provision of-a pump of the class described in which positive priming of the pump is obtained without the use of check valves in the priming structure; the provision of apparatus of the class described in which lubricant may be maintained in a fluid condition at various temperatures, in-

cluding the coldest; and the provision of a paratus of this class which is simple, compact and reliable. Other objects will be in part obvious and in part pointed out hereinafter. j

The invention accordingly comprises theelements and combinations of elements, features of construction, and arrangements of parts which will be exemplified in thestructures hereinafter described, and the scope of the application of which will be indicated in the following claims.-

In the accompanying drawings,"in which is illustrated one of various possible. embodiments of the invention,- g a Fig. 1 is a plan view of the apparatus; I Fig. 2 is a front elevation of Fig. 1; Fig. 3 is a side elevation of Fig.2, taken the right;

i Fig. 4 is a horizontal section taken on line 440fFig-2;- i

Fig. 5 is a vertical .sectiontaken on line 5- 5 ofFi'g. 1; and,

V 5 l Fig. 6 is a horizontal sectionj tal-ren on line Similar reference. characters indicat corresponding parts throughout the several .views of i United States Patent 2,221,585, dated November 12, 1940, shows a gasoline engine driven lubricantpump in which a mechanical driving connection is released at a predetermined lubricant pressure. v 7

United States Patent 2,276,207,dated March 10, 1942, shows a gasoline driven lubricant pump in. which an inlet-port iscovered" by the opera- 'tion of .a mechanical linkage when a predetermined pressure is obtained, thereby unloading the prime mover without opening any mechan- .ical connection. it

In our United States patent application, Serial No. 441,620,. dated May 4, 1942, for Pump, unloading operation is accomplished hydraulically.

frorn the-like with casters or The present invention isan improvement upon saidpatents andapplication." l

Referring new more particularly to Fig. 1, there is shown at numeral 1 a base for carrying the apparatus to bedesc'ribed. This base may be made portable b'yinounting it' on a truck or wheelspor it may be bolted down, if desired. i

. Upon the base I is mounted an internal combustion engine unit 3 comprising in th present case a gasoline engineS, including all of the accessories for' independentwperation, such as 'a fuel tank I, carbureting system 9, startingpul- 'leyTZ'QeXhauSt port ll, etc. Associated with the drive shaft 13 of this engin'eis a. clutch l5 manuallyoperable. to be opened and closed by a manual control handle ll; This is .for permitting engine starting and. Warming prior to. coupling itto its driven member.

terenters, through a packing gland 25 intojhous- :ing 23. Thishousingisian assembly, of castings, but one numeral ,is here used to designate it generically. The shaft is supported internally on bearings ZHFig. 6) 1 The housing 23;;is supported uponthebase I and includes central, vertical" bearings 29 for a rotary shaft 3|. To shaft 3| is keyeda worm wheel 33 meshing with a worm. gear 35. The latteris keyed to shaft 2!. Thus, when the clutch l5 is; closed, the prime mover 3 may continuously drive the shaft 3| through gears 35 and 33."

J The upper end of the shaft 3 I is cut as a pinion ear- 3] ,which .drives on ;opposite sides, gear clusters 39.- Each. cluster 391s in efiect'tw coaxial gears of equal size cut into the ends of a short cylinder. one of whichmeshes-with' the pinion 31 (on shaft 3!) l and the other of. which mesheswithfla ring gear, ofa spider 43; Each spider 43 is formedtwith paddles 45. There are two'oppositely-located spiders 43, as shown; and

these rotateinoppqsitedirections. The paddles thereon arerespectively arranged so that. their studs threadedinto the bottoms "of tanks 5| which respectively, carry' different. lubricants. Anopening53 is indicated in each bottom 49. These openings communicate. with attached'suc- :tion :inlet manifolds 55 upon which the 'respec-' ing a particular pressure for its transmission and thereforediffererit size of pumping "mechanism. We will therefore describe the left-hand. pumping mechanism in detail, and it will be understood that the right-hand pumping mech-fanism responds to the same description, except that certain of its parts Will'be'found tobe larger; Referring to the left-handma'nifold 55 a'l ousjh-j ing 51 forms a cylinder 59 for'a plungerjfi l. An

building up of pressure is prevented. When this valve 6 is opened, the incipient reduction in pressure permits the valve 19 to be opened by spring 83, whereupon fluid is available at the inlet 89 for pumping at a pressure below that which will close thevalve 19.

. pthe shaft iil rotates the paddles 4 5 also ro- "tate' and b3} a skew action tend to pack lubricant ,dpwn toward the bottom ll! of the manifold 55. "In order to perfect the priming action which r these skew paddles 45 initiate, the inlet 91 is led iiumeral fi in Big, 4). This priming cup IE5 outlet check valve 63 for thecylirider 'communi-" cates with an outlet 65. The outlet 65 is intended to receive the usual'fiexible' hose '4 at .r

the end of which hose is a control valve Bior' starting and shutting off the flow of lubricant.

Check valve 63 ina'horizontal plane (Eig. 4). also, communicates with aipipe fir'l which leads to" aj'body 6 9 in which is a sliding plunger; II.

Onihe'top of the plunger-ll is, a sealing disc 13rmovable' with the plunger.; The-body 63 is organized with a member 15 which forms a com.-

partment in which is a-sliding stem'TI. At the .end of the stem is said plunger ll. On vthe other end; o'fvthe stemis a valve head 19 which moves to." and from a seat 8! in the side ofthe manifold 3 .55. "I'hissea-t forms part of an inlet 89 for the cylinder 59. A spring B3-acts against one end of 'the hollow in 'member 15 and reacts against ahead 85 'onthe stem 11. so aslnormally tables the stem into a position wherein the valve head 19 is open andaway from the'seat 8|, as shown. Upon a predetermined pressure building up. in pipefil, the plunger H will be pushed in a direcitioritoforce thetstem 11 against spring 83, until the'he'ad 1s contacts and clos'es the seat 8L As indicat'ed the stem 11 passes througha packing -gland"8l'. Part 15Jmayb adjusted on its threads in"bbdy '69,?tlius' changing the tension in spring -83ia1'1'di thf pressure at which the valve head 19 will 'iunctionf Y I P The port 89 is crossed by the front end of a reciprocating plungerbr' 'piston 6 which operates in't'he cylinder 5955"This lunger; 6| at 95 has a f j frs sh hsi tiss z s it t a sis s ij 91 1 79? 'theflatter passing through a: packing gland '99 thcrosshtad Thebrosslie'adfIQIi is-io'rmed with an intermediate space "between the" hdwise flats 109 which togeth'ri'with p'ad'lo-lfform afollowe'r' 'yoke 'I husthe eccentric ":l ll forms a rotarypositive motion cam forthe'follower yoke flats l 09, there;

b rec'iprOc'atmg the rod 91 and. plunger 6:1. "A slot 113: is provided'sin the bearing padllflilafor permitting: motion of the v yoke with respect to v 'Fromthe above it-will beiseen tha't thesplunger ates the space Ill by means of a stin .i

dr' Il9'is' a fre I fitting piston part I2! formed in association withthe connection 95. This pisto'n is rigid'on' the'piston rod 91 and, during a compression stroke of the plunger 6|, moves'out into"a"free position in the space Ill. At this t meth addlss 4s (alsnswith rav t and vac cnsatsdhr .p stsin' in pas? 5) Dash lubricant into the priming cup I15. Upon a suction s rok of Bll hg iii-l ths pist h l?! is ,ters he c linder H2 ahsiisrsss, ubricant ite the u 1-1 rou h assage-rs 8" and. i to th mist 9. hhsrar mi s he shares hea o he a ts: A f r s ihare s sh upph he 9st t olss an xc ss amohht. Qi lshri aht over hat asset thrpr m hs slips asls past this ee. spac @XQUQQi pi tes W: i ts hamh r Ml. This i th sissraiic f under sash. sg sitishs s h a v l9.

aths othsrhahd the val-ts is ss d and the Dist i211 m i cs am. the. ace H i t r d i 59; th t ee-spac r slsa ah s i twssh tarts H9 hd a ar t apped i 2 2-19; it? tsisssahs-bas s ts h a e thsre) 1s. de ai ed ahtsihst s pr min o he s m 151 QP l- QR PS 0 the. Valve 19., ir s sshlz ss ts rom th mi sin @1 13. L hen the va ve 1% ut thssi; h qt any 'sqihhl s t di .hssh valve ssris m ns t as t s a s It v .1; be, hs-tgdw that thspt ehimha tsd s the plunger 6| by the circular car t. operating between he. flataces. .5. is 29i shin ss t during both thg CQIIlpiBSSiQI}QIQQ SQQlQlQTI SIZX OKES, buti tcsh ist Sims. srmsni ms im. whi is ideal'for low deceleration and acceleration of he plun er fil-at hs e dsof. ts s nq s hat is when the port 89 is uncovered. Itisduring this period; t at the auxiliary piston 1; s sist to prime. Thus the piston l2l primes, under ds l nd i q sr 1 r p Also, the cooperation between the. piSUQn. I-ZI nd. i ylinder, M331; is during theislowi part of ,the,movement,.that is, near the end of themeticiprocation rearward; Hence, if thevalvefli-is closed, themis plenty. of time intwhichtrapped fluid in the; priming rcup, H35 may escape to the primin pace. I lMhroush ther aranc s w msmhsrs 4-L n1m 3' Similar reference characters have been applied to the flhrgenpumppartsat thegloweri right of igs, h nd t n-r specti ely exce t atthese-h ve -hesh rim diwhsr rthey efer to. parts. ofya differentlsiz e but. havingv the; same functions. In order-m mma a qoncept of the relatio h p f nartswhen a. 913L02 I21 .or IZII/isinthe space In, the right-hand portions of theseEigsi Land 5 may be examined, It; will-be understoodrthat the plunger. in .694 (corresponding to. plungerc H in 649 iswmadeilarger .to. operate; correctlyl'with 'M able into and from this cylin-' the larger-plunger 6|. or, if desired, aspring wltha'difl'erent forcemaybeused. I l

The valve I9 closes on its s'eat8I bymoving downstream in the connection Si -between the priming cup H and cylinder 59, and this insures a positive closure action of the valve against pressure in the cup II5. This insures return of lubricant past the clearance betwen the piston -I 2 I and the cylinder I I9 under high-pressure conditions and one can be assured that there will be no improper loading of the plunger BI .dueto any priming action at the time it is desired to limit pressure in the closed outlet line.

In order to guard the teeth of the gears 4|, annular shields I23 are clamped between the containers 5| and the bottom castings 49. These shields I23 will prevent the fingers of an'operat'or, who may reach into a container 5|, from becoming caught in the gear teeth Since this apparatus is intended to have portable .applicationsit will occur that sometimes it may be in very cold. locations, such as out-ofdoors in winter. Under such conditions, many lubricants become stiff and diflicult to pump, and

haust port I I. When detached a muffler may be screwed into I I.

The other end of this exhaust line I2! is connected to a jacket I29 which surrounds the lower portions of the body 23 including the manifolds 55. Exhaust openings from the jacket I29 are indicated at I3I It will be seen that the rather flat shape of the manifolds 55 and connected parts is arranged transversely of flow between the inlet I30 and the outlet I3I, thereby enhancing heat exchange and operating to a substantial extent as a muflier, due to the bafiling and cooling action of the exhaust gases.

Operation is as follows:

The clutch I5 is manually opened and the engine 3 started, which immediately sends exhaust gas into exhaust pipe I2I (if connected) and through the jacket I29, thus warming the lubricant around the manifolds 55. Then the clutch I5 may be closed. At this time, if there is no 'pressure'in the lines connectedwith the outlet continues to operate to reciprocate the pump plungers without further building up pressure. Then when an outlet line valve is opened, pressure is incipiently reduced in the respective line, causing opening of the respective inlet valve I9 and positive priming andpumping of lubricant. The non-positive skew primers 45 act at all times that the engine is operating and the clutch closed,

"'butthe p'ositive primers I 2| are effective to prime only when the respective valves 19 are open. At other times lubricant-squeezes by the clearances between II9 and I2I.

It will be understood that all necessary or desirable-auxiliary accessories are used, such as lids I33 and closing locks I35 on the containers 5i.

Also, both reciprocating plunger elements 6i, 6| may be made of equal size if it is desired to pump the sameweight of lubricanton either side of the apparatus; or the apparatus may be built as a single tank and'single plunger unit.

This obviously would be done simply by eliminat- I ing one side of the construction, so far as the tank and plungerelements are concerned,

Each cluster 39 ismade simply by machining teeth into opposite ends of a cylinder, so that the central portion of the cylinder and the addenda of the teeth act as bearings in suitable coaxial openings in the bottoms 49 and in an intermediate member 59. Packings 52 are used between the intermediate member 50 and the bottoms 49, around the middle portions of the cluster 39. This makes a simple arrangement for mounting these rotary clusters.

In view of the above, it will be seen that the several objects of the. invention are achieved and other advantageous results attained.

As'many changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

We claim:

1. A pump comprising a lubricant manifold, a pumping cylinder having an outletand an inlet, a plunger passing through said manifold and having a portion reciprocating in said cylinder and traversing said inlet, a piston on said plunger outside of said cylinder and reciprocating in said manifold, and a part forming a priming cup connected with said manifold by a cylindric portion cooperating freely with the piston and into which the piston moves during a suction stroke of the plunger in the pumping cylinder, said priming cup being connected with said inlet for compression of lubricant thereto during a suction stroke of the plunger and while the piston moves from the manifold through said cylindric portion and toward said priming cup.

I 2. A pump comprising a lubricant manifold,

a pump cylinder having an outlet and an inlet,

a plunger passing through said manifold and having a portion reciprocating in said cylinder and. traversing said inlet, a piston on said plunger outside of said cylinder and reciprocating in said manifold, a part forming a priming cup connected with said chamber by a portion cooperating freely'with the piston and into which the piston moves, said priming cup being connected with said inlet for compression oflubricant thereto during a suction stroke of the plunger and While the piston moves from the manifold toward said priming cup, a valve seat associated with said inlet,.a valve movable to and from said seat, means normally biasing thevalve from the seat, and means for transmitting fluid pressure "from the outlet of the pump cylinder to apply pressure against said bias and to the valve to seat the latter at a predetermined outlet pressure,

3. A pump comprising a suction manifold for lubricant, a pump cylinder having an outlet and an inlet, a plunger passing through said manimanifold by a cylindric portion cooperating freely -with the piston and into which the piston moves during a. suction stroke of the plunger, said priming cup being connected with said inlet for compression of lubricant thereto during a suction stroke ofv the plunger in the pump cylinderxand while the piston moves from the manifoldrtoward' said priming cup, avalve seat. as-

sociated with said inlet, a valve movable ton-and from said seat, meansnormallybiasing the valve from the seat, and meansfor transmitting fluid pressurefrom the. outlet of the pump cylinderto apply pressure against saidbias and to the valve to seat the. latter at apredetermined outlet pressure, said free fit between said piston and the cylindric portion allowing return of. fluid from the priming .cup to the manifold upon reciprocation when said valve is closed.v

-.4. A pump comprising a suction manifold for lubricant, a cylinder having an outlet'and an inlet, a plunger passing through said manifold and having a portion reciprocating in said cylinder and traversing said inlet, a piston on said plunger outside of said cylinder and reciprocating in said manifold, a part forming a priming chamber'connected with said manifold by a cylindric portion cooperating freely with the piston and into which the piston moves during a suction stroke of the plunger, said priming cup being connected with said inlet for. compression of lubricant thereto during a suction stroke of the plunger and while the piston moves fromthe manifold toward said priming cup, driving means for reciprocating the plunger, and non-positive means operated from said driving means for advancing lubricant into said manifold and the priming cup.

5. A pump comprising a lubricant container,

suction manifold connected thereto, a cylinder having an outlet and an inlet, a plunger passing through said manifold and having a portion reciprocating in said cylinder and traversing said inlet, a piston on said plunger outside of said cylinder and reciprocating in said manifold, a partforming a priming chamber connected with said chamber by a portion cooperating freely with the piston and into which the piston moves during a suction stroke. of the plunger, said priming cup being connected withsaid inlet for compression of lubricant thereto during a suction stroke of'the plunger while the piston moves from the manifold toward said priming cup,v driving means for reciprocating the plunger, and rotary skew paddle means ,in the container and operated from said driving means. for advancing lubricant from the container, through said manifold and to the priming cup.

6. A lubricant pump comprising a suction manifold for lubricant, a cylinder having an outlet and an inlet, a plunger passing through said manifold and having a portion reciprocating in saidcylinder and traversing said inlet, a piston on said plunger outside of said cylinder and re.-

.ciprocating in said manifold, a part forming. a priming chamber connected with said chamber by a cylindric portion cooperating freely with the piston and into which the piston moves during a suction stroke of the plunger, said priming cup being connected with said inlet for compression of lubricant thereto during. a suctionstroke of the plunger while the piston moves from the manifcldtoward said priming. cup, a, valve seat associated with said inlet, a valve movable to and,

from said seat, means normally biasing the. valve from the seat, and; means for transmitting fluid pressure from the outlet of the: pump cylinder to apply pressure against said bias and to the valve to seat the latter at a predetermined outlet pres sure, said free fit between said piston andythe cylinder allowing returnof fluidfrom the priming cup to themaniiold. upon reciprocation when said valve is closed, said valve closing downstream .inthe. connection between the priming cup and the cylinder. i. cw an lubricantv pump comprising arpair oi-adjacently'located vertical. lubricant containers, on- .pos'itely located "and Spaced manifolds below :said containers, a; vertically locatedshaft betweensaid manifolds, Opposite coaxial pump. cylinders connected with said manifolds, opposite coaxial re.- ciprocating plunger means for said cylinders, a yoke connecting 'said plunger means and :sur.- rounding said shaft, eccentric' means'driveniby the shaft and connected withsaid. yoke for reciprocating said plunger means-,- and means for .driv.-

ing the shaft. e

8. A lubricant pump comprising a pair of adjacentlylocated vertical lubricant. containers, op positely located and spaced manifolds below said containers, a. vertically located shaft between. said manifolds, opposite horizontal coaxial pump cylinders connected with said manifolds, opposite coaxial reciprocating plunger means for said cylinders, a yoke-connecting saidplunger means'and surrounding said shaft, eccentric means driven by the shaft and connected with said yoke for reciprocating said plunger means, means for driving the shaft, horizontally located spider gears respectively at the bases; of the container and rotatable therein, lubricant driving skew means on. said gears, and geard'rivi-ng means between the upper end of said shaft and said spider gears respectively.

9. A lubricant pump comprising. a vertical luhricant container, a, manifold below said contamer, a vertically located shaft, a horizontal pump cylinder connected with saidmanifold, a coaxial reciprocatingplunger means for said cylinder, means for driving the plunger from said shait, means; for driving, the shaft, a horizontally located spidergear at the. base of the container and rotatable therein, a lubricant driving skew meanson said gear, andgear driving means between the upper end of said. shaft and said spider gear. '1'

10 A lubricantPnm-p comprising a vertical container having an outlet opening at the bottom, bearing; means-attachedto the bottom adjacent said. opening, an open spider gear rotary on said bearing, means and horizontally rotary at the base oi the container, the teeth of, th gear being adjacent to the outer Walls of. the container, and paddle means arranged radially in the open portion'of said spider gear. I

ii. A lubricant pump comprising a vertical container having; an outlet opening ,at the bottom,

bearing; means, attached, to the; bottom adjacent saidopening, an open spider: gear rotary onsaid bearing, means and horizontally rotary at the. base the container directly-above the teeth of said gear, and paddlemeans. arrangedradiallyin the open portion of said spider gear,

AUGUST Dr REISERT'.

VICTOR-G; RUDY

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