US2555532A - Grease dispenser with means for jarring the grease from the container to the pump chamber - Google Patents

Description

Jime 5, 1951 H. H. CHINCHOLE 2,555,532 GREASE DISPENSER WITH MEANS FOR JARRING THE GREASE FROM THE CONTAINER TO THE PUMP CHAMBER 3 Sheets-Sheet 1 Filed April 21, 1947 Jilne 5, 1951 H. H. CHINCHOLE 2,555,532

GREASE DISPENSER WITH MEANS FOR JARRING THE GREASE v FROM THE CONTAINER TO THE PUMP CHAMBER Filed April 21. 1947 3 Sheets-Sheet 2 5 4 z a 7 M v. M 66 m w m a m 2 M 5 A M .w 6 b mm um v\\ v. 0 O m D\ .5 m 1 z 77 J n Ma m J l 0 7 j M l 6 w Q m R J h. I [H M -1 0 a w .0 0 3 l a m 1.1 w- 4 4 m 5w 5. W 58 g v a 6 z H L a z .w III 6 2 x 4w 6 J M v '0 l l 7 5 w 1 z I m 1 1 June 5, 1951 H CHINCHOLE" 2,555,532 GREASE DISPENSER WITH MEANS FOR JARRING THE GREASE TO THE PUMP CHAMBER 5 Sheets-Sheet 3 FROM THE CONTAINER Filed April 21, 1947 T R 3 N g I K a a g w z 8 N 5 a b. a R 4 f a a g 1 N N a: amtiaaaamu W 0 3 R R N m N 0 g 21 3 gag- 1 a 9 D 0 H H \Qm I" w I I" v nlwv In \r e g 3 w a; 3 E. x Q A L? m r1 Patented June 5, 1951 OFFICE GREASE DISPENSER WITH MEANS FOR JARRING THE 1 GREASE FROM THE CONTAINER TO THE PUMP CHAMBER Henri'H. Chinchole, Chatou, France Application April 21, 1947, Serial No. 742,959

In France December 21, 1943 Section 1, Public Law 690,.August 8, 1946 Patent expires December 21,1963

' 17 Claims. 1

This-invention.relates to dispensing, and more particularly to methods and devices for dispens-- ing viscous or semi-solid materials, such'as heavy lubricants, under pressure.

The general object of the inventionis to 'provide novel and improved apparatus and meth ods of the class described.

A more specific object ofthe invention is the provision of. a force-feed pump for viscous or semi-solidlubricantsand the like, in which novel and refiicacious meansare provided for insuring that anadequate chargepoi. material from the reservoir: or container is: always available in the pump chamber.

Inudesigningany. compressor or injector. for the dispensing of heavy lubricant under pressure; the same difiiculty is encountered, namely, the proper feeding of the force pump.

Heavy-lubricant; such as grease for autorno tive vehicles and other machinery, is a material whichdocs not obey' the laws of 'hydrostatics, since it is not sufficiently fluid to seek its :own

horizontal level, at least at normal temperatures. However; in order to'insureits distribution or dispensing .under pressure, it is necessary to introduce. the charges promptly. and eiiiciently into the chamber or cylinder of the force pump. In order toeffect this purpose; the mere suction of a pump is generally insufiicient and without some other means of feeding the pump, the distributor or injector'device is quickly rendered inoperative.

Various proposals have been made, and have been usedwith. indifferent success,-for the purpose cf efiecting in some fashion the feeding or primingyof the pump with these heavy lubricants; These measures have generally involved one of the following expedients: inclosingcthe lubricant in a sealed container into the interior of which compressed air is introduced; providing a gravity or power actuated piston within a cylindrical reservoir, which pistonis adapted to.

restmechanically upon the surface of the lubri-= During operation, the: manipulation of the force: pump causes hollows or airapockets to 1f01 m".in the .bOdylIlOflubIlCant and this completely disables the compressor, which can be started again only after areductionor elimination of suchpockets.

The present invention'contemplates the provision of means for insuring the continuous-packing of the lubricant and its introduction into the pump cylinder in continuous form-without voids or air pockets. This purpose is accomplished by subjecting the reservoir or container which holds the supply of-lubricant and which is provided in its lower portion withthe'force pump, to successive jarrings, the effect of-whichis to accumulate the lubricant-in thelowerpart of the reservoir and thus feed it to thewforce pump.

The reservoir or 1 container is carried on a vertical shaft, andat every pump stroke it is liftedto a certain height. When it reaches the highest point of'its course,- it is released and allowed to fall freely, acquiring acceleration until'the instant'whenit strikes upon an abutment at the lowest point of'its movement. At that instant, the reservoir itself stops abruptly, but the lubricant which it contains,-because of the momentumdeveloped during the fall, con-'- tinues its. movement after the stopping. of the reservoir, and accumulates within the low'estpart of the reservoir, which comprises the pump chamber, thus eliminating any .voids or pockets.

In the preferred form of the invention, in order to combine the packing operation with the pumping procedure, the usual arrangement of the pump has been reversed and the piston thereofv held stationary while the body .or cylinder of'the pump (which is integral'with the reservoir or container) is movable; Thus in the reciprocatory motion of the pumping arrangement two strokes are utilized, a forward stroke for the purpose of effecting the compression of the lubricant in the cylinder of the pump and its discharge therefrom, and the return stroke for the purpose of effecting the packing or cramming of the reservoir.

With this arrangement, if a stoppage should. occur due to the formation of an air pocket, it is-suflicient to'continue the pumping movement for a few strokes, which will have-the effect of eliminating the air pocket andpacking the pump cylinder in a very positive manner. After a few idle strokes the pumping action will resume automatically and the flow of lubricant will proceed.

Another object of the invention'is to: provide both manually operableand mechanically operabie means for a dispenser of'this type.

A further object is to provide a mobile or port ables-device "adapted --to-- support and transport a plurality of containers and pumping units, each adapted to dispense a different kind of lubricant ranging from motor oils to the heaviest greases; and to provide in such a portable dis penser, means for selectively bringing a given dispensing unit into operative position.

Other objects and features of novelty will be apparent from the following specification when read in connection with the accompanying drawings in which certain embodiments of the invention are illustrated by way of example.

In the drawings,

Figures 1, 2, and 3 are diagrams illustrating the principle of operation of the novel pump; Figure 1 showing the position of the pump prior to the beginning of the compression stroke; Figure 2 the position when the effective compression begins; and Figure 3 the position at the end compression stroke;

Figure 4 is a view in'perspective of a quadruplex selective compressor-dispenser embodying the principles of the invention;

Figure 5 is a view in vertical section through the pump and supply cylinder or dispenser shown in Figure 4;

Figures 6 and 7 are fragmentary sectional views on an enlarged scale showing the pumping mechanism of the respective oil and grease pumps of Figure 5;

Figures 8, 9, and 10 are diagrammatic views showing several positions of operation of the dispenser elements; Figure 8 showing the positions of the pump cylinder, the elevating slide block, and the treadle at the end of the compression or discharge stroke (corresponding to the diagram in Figure 3); Figure 9; showing the positions of the parts at the end of the impact or jarring stroke (corresponding to the diagram in Figure 1); and Figure 10 the release position of the parts'preparatory to rotating the support to bring in the cylinder and pump into operative positiOn;

Figure 11 is a perspective view of a grease drum or cylinder which may be used in preparing a filling cartridge for the cylinders of the dispenser;

Figure 12 is a fragmentary sectional view of the lower portion of a grease cylinder showing novel means for stirring or whipping the lubricant to facilitate the packing thereof; and.

Figures 13, 14, and 15 are somewhat diagrammatic views in vertical section and elevation, showing three successive positions of operation of a modification in which the device may be mechanically operated or power driven; Figure 13 showing the position of the operative parts at the beginning of the compression stroke; Figure 14 near the end of the compression stroke just before the beginning of the jarring or compacting stroke; Figure 15 showing the parts at the end of the jarring stroke.

Before describing certain preferred embodiments of the invention in detail, the broad principles of operation of the invention will be set forth in connection with the diagrammatic showings in Figures 1 to 3 of the drawings. In these diagrams the lubricant reservoir is indicated by the reference character a and it is filled with a supply of heavy semi-solid lubricant or other material to be dispensed which is indicated at a. The reservoir is narrowed at its lower end to form a pump body 22 which provides a chamber within which the pump shaft or piston c is adapted to 'be received with a rather close clearance. The piston c is hollow having a central passage- 4 l way 0' through which the lubricant may be discharged and there is disposed within the lower end of the bore 0' of the piston c, a ball valve h which is urged toward its seat at the mouth of the bore 0' by means of the coil spring h Preferably the piston, the reservoir, and the pump cylinder are all disposed axially of the dispenser.

The piston c is fixed with relation to the device, and the reservoir or container a and the pump body I) are adapted to be moved through the distance d which indicates the total length of stroke of the pump.

At the beginning of the compression stroke which is the position shown in Figure l, the lubricant fills the chamber enclosed within the pump body I), and it will be noted that in this position the reservoir descends low enough so that the piston 0 will be withdrawn entirely from the pump body I), the lower end oflthe piston being at this instant opposite the converging or tapered side walls 0 of the reservoir, a narrow annular space 2 being afforded around the end of the piston through which lubricant may move downwardly into the pump body I).

When by some manual or mechanical means, the reservoir or container at is lifted along its axis, the lower end of the piston c (guided'as necessary by the conical walls 6) completely stops up the opening into the pump cylinder b, all as indicated in Figure 2 of the drawings. From this point on, the lubricant which is enclosed within the pump cylinder begins tobe compressed, and since it has no other outlet than the axial channel or bore 0 of the piston, the descent of the piston into the body of the pump will cause the discharge through the bore of the piston of a quantity of the lubricant equal to the volume of material contained within the body of the pump, and with a pressure proportional to the force lifting the reservoir. The upper end of the tubular piston is of course connected with the piping 0r hose system of the distributor or dispenser.

When the reservoir arrives at the upper end r of its course it (as indicated in Figure 3) the lifting force is suddenly removed, and then under the influence of the weight of the container (augmented by spring action if desired) the container falls vertically through the height (2 to the lowest point of its course.

During the dropping of the pump body and reservoir, the piston valve it closes the bore 0' and thus a partial vacuum tends to be created within the pump cylinder, and by the time the falling reservoir and pump chamber has reached the point indicated in Figure 1, the piston c has left the pump chamber and lubricant is free to enter the chamber b through the annular clearance space e. The lubricant begins to enter the pump chamber both under the action of the outside air pressure on the surface of the body of lubricant a as well as under the influence of the kinetic energy stored up in the lubricant. The stopping of the free fall of the container is eliected by impact on the fixed piece or anvil 1 which determines the lowest point of the course of movement of the pump'and reservoir. Upon such impact, the inertia of the body of lubricantcauses the pump chamber b'to completely fill with a charge which is ejected during the next cycle of operation of the pump.

Having described broadly the principle of operation of the invention, certain practical embodiments will be set forth in considerable detail. For

' example, there is illustrated in Figure 4 of the ass-53 532;;

5: drawings-a portable rdispenserxadapted. to carry and supply lubricants of three different. types; Of course, withinrthe scope: of :the invention, any desired number of. containers and associated pumping. arrangementsmay be carried'in. a similar mannena. but it? 'is.:. .probable. :that such machines ;would.: be limited .by practical considerations to about. four container-"sand pumping arrangements. For .the sake: of illustration; a machine carrying three separatesupplies of lubricant is shown in Figure The cylindrical reservoirs are indicated by the reference numerals loruand it, will be seenrthat theyare provided with downwardly convergent bottle-like lowerportions I! the necks of whichare receivedjin and 'normallysupported by the enlarged portions 12' of. the: three-armed spider member 1 3 which is supported upon a' central shaft the lowest end of. which is receivedqwithinsthe socket member I5 of-the central carriage frame 16 the forward end .of-whichis.pivotally carried by the-axle I! supported by the two ground-Wheels Hi .The car-- riage frame [6 extends rearwardly and downwardly as at H" and-terminates in a laterally extended stop lug 19 and may be provided at an intermediate-portion with a caster 2'0;-

Theu-central supporting; shaft I4-Which is received-within the socket l2, and which in- Figure 4 isconcealed rby the-surrounding; cylinders lflr-carries at its upperendthe dislc or hub frame 22 which is provided witha plurality of upwardly extending divergent spokes or supports.v 23 to the upper ends.of which is secured .the :hand

wheel or circular handle 25,-. by meansvof which the, entire dispenserwma-y. be tilted-and trolled upontheground wheels l8 and thusthe lubricanttransported .to .points where it is needed". The

wheel-25.alsoaffordsmeans for rotatingtheshaft i 4,? the spider. I3, and. .the dispensing. units. a l El,.. II. for bringingselected ,ones of these units to l a dispensing positions as..will be described.

The upper ends ofthe reservoir cylinders ii! are provided with the enveloping lids orclosures,

.21. which are preferably. cylindricaluor dome shaped and through which the tubular dispensing shafts 30. extend.

The disk ..frame. 22;.is provided .at intervals.

around its periphery with lugs 32 .'.which are kerfed to provide means for receiving theshafts 3B and permittingthem-toi be removed fromthe lugs when the cylindersuor reservoirs J 8' are ap-.

plied to or removed from the.carrier,-.all of. which will be explained in.fu'rther detail .in connection.

with Figure .5 of thedrawings.

Sets of jointed tubing or piping. dB-arecoupled as at 36- to the several hollow outlet shafts or pipes and each ofthese sets .ofpipes .is.

provided with a discharge. coupling as indicated. at 31, by means of which'it may be applieclfto. the grease connectionof an automobile. or the. like. The carrier is provided witha foot treadle.

as: whichis operatively connected with. a .device indicated generally at dl for operating the pump.

associated with the particular cylinder or. con.-

tainer which is disposeddirectlyabove themech anism AL. The details .of these devices ..will be presently described.

Referring/now more particularly .to .Figure 5 of, the drawings, the following elements will be recognized from the brief. descriptions. given in connection-with Figurev 4: the reservoirs or containers Ill with theirconverging lowerportions I l,

the hollowenlarged portions l2- of-the rotating spider 3, this spider being fixed to the centrally: disposed .vertical.-,. shaft 1' M :which lliS 1:: rotatablym:

mounted within the; housing .;;I 5 :forming a part ofw'theyicarriage iii-supported .by gthe' axle; IT on therground 'wheels *l 8:: A'split collar..:l 5". retains the: central shaft. al 4 -in rotatable 1 position upon 1 the carriage I51: Thexrear-portionll" of the carupon which theedischargehose or pipingmay bewsupported:

Referringnow to rzthe specific details: exhibited by; Figure 5, there mayt be mentioned the bottom castings-5B .oflthe reservoirs rlll -which are recessed-as at 5|,which-recess. together with the chamber 152 within the lower portion H of the containers, providesthe pump chamber; The pumping arrangement: in [the left-hand cylinder I llin Figure 5, and=also shownon anienlarged scale. inFigure 6, willafirst. be described. This: dispenser; is adapted for use in connection with" the; distribution of. a heavy oil.a Axially of the 1 cylinder or. container ll] there is. supported the hollow shaft 30. which passes through a central opening. inv the; top-10f .the1-dome-like. cover. 21 andis received'within the kerf. or slot-32 'tformed in the lug 32 .of the upper. disk 22 Threaded 30; upon .the. hollow shaft Sitinteriorly of vthe cover 2! is .a nut.54 andexteriorlyof the cover a con-i cal nut. 55. is. threaded, .thesetwo nuts serving to clamp between them thecover-Zl andtheupper and .lower. disks orrwashers, ..56.-..and 51.. The

; conical portio'n.58 of thenutJB-isadapted to..be-

received within'. a similarlyv shaped .recess .in ..the lower. surface oflthe lug ,32i I The. couplingjll" provides means for attaching the piping...3*5 to.

the upper end of the. .hollowshaftBU.

The lower end of. the. hollow delivery shaft. 30 is provided with. a piston. member. Bllfwhichis adapted .to be closely. receivedlwithinrthe portion 52 of..the pump chamberi A ball valve 6l serves.

to close the small openingin the. bottom of the. piston 60, this valve being urged downwardly.

toward its seat by means of a spring 612..-

Aguideblo'ck or pedestal. is seated upon the sloping lower Walls of the container IO and is.

provided with; an opening in-its upper end to receive and guide .the lower endof the shaft 30,.

andthe pedestal is also provided with a recess fifiprovidingaspring seat for the lower endv of the coil' springBG which surrounds .the shaft 30 and seats at its upper end against. the nut 54.

In this Way a telescoping container comprising theelernentslfl and 2i!" is provided, said elements beingurged apartby means'of spring 68 to assume thepositions of the various parts shown in Figure 5.

lie-operation of the dispenser will be" explained in greater detail later on; but it willbe sufiicient toindicate here that-whensuitabl'e lifting means is applied tothe" bottom casting 50 of the pump.

andreservoir assembly, the entire reservoir. I

will beraised'within the cover' 2? against the pressure ofthespring M ami the piston 60,,fin effect; will-descend within the pump chamber 52 causing the oil or grease trapped therein to pass through the opening in the lower end of the piss ton;=dis'plac-ing the valves F and passing upwardly througlrthehollow bore of-the shaft 30 and thus through the piping-'35-to'the point of discharge. When the. container and pump have reached the uppermostarpoint of 1 their movement; the lifting 753 meanspiisz releasedlfandz the eon-tainer "l8 "allo'wed' to drop, both under the action of gravity and the expansive force of the spring 68, so that the casting B strikes the enlarged portion [2 of the frame I3, which acts as an anvil, and the chamber 55'is thus filled with lubricant which passes from the main portion of the reservoir it through the clearances indicatedat 69' around the lower edge of the piston 69.

The construction and operation of the grease dispenser illustrated at the right-hand side of Figure 5 of the drawings and upon enlarged scale in Figure '7, will now be described. The intermediate and upper portions of the reservoir and dispenser in this instance are identical with the corresponding parts of the one just described in connection with the left-hand side of the figure and similar reference numerals are employed in indicating the several parts. This embodiment of the invention differs from'the one previously described only in the arrangement of the pump, piston, and cylinder at the base ll of the container I 0, and the mechanism is more particularly adapted for the discharge of lubricating grease under high pressure, the grease being discharged under pressures of from 10,000 to 12,000 pounds per square inch. In this embodiment the lower end of the hollow shaft 30 is comprised by an extension 30a havin a narrow bore 36b terminating at'its lower end in a fine opening 61a. The extremely narrow opening 6m is the practical equivalent of the ball valve 6| employed in the preceding embodiment. The diameter of the constriction 6 I a is large enough to permit the free passage of lubricantunderthe pressure applied thereto, but small enough to offer effective resistance to the return of the lubricant when the latter is only under the influence of atmospheric pressure.

In this embodiment a smaller supplemental pump body 7!] is employed to form the pump chamber, and this element is seated within the recess 5! within the bottom casting 56 of the assembly. The upper end of the pump body or cup If! is shouldered as at H and is surrounded by the flange ring 12 which may be threaded upon the cup 10. A flanged packing element 14 is clamped between the two members and 12 and forms a seal against the piston shaft 30a when it descends into the pump chamber. The pressure spring 68 seats upon the member 12 and urges the pump body assembly downward. The vertical annular flange of the packing element 14, due to the pressure which prevails in the pump body I0, is applied very strongly to the piston and prevents any leakage of lubricant, the seal becoming more effective the higher the pressure. However, it is to be noted that a leak would not cause a loss of material but simply the return to the reservoir H) of a portion of the lubricant contained in the pump body 10.

The means for raising the several containers and pump assembly and jarring the material into the pump chambers will now be described. Preferably formed integrally with the supporting frame I6 is the tubular guide portion 15 and within this guide there is disposed for vertical reciprocation the cylindrical slide block or lifting element it. The guide portion 15 is disposed directly beneath the enlargement l2 of the rotatable spider l3 and the opening in the portion I2 is of the same size as that in the guide portion 75 and in registry therewith. The liftin block or sliding cylinder 11 is fitted at its other end to the marginal shouldered portion of the casting 50 comprising the lower end of the reservoir pump assembly.

The treadle 40 is pivoted as at 19 to a downwardly extending bracket portion of the carriage frame It and the shorter arm 8! of the treadle is operatively connected with the lifting block 11 by means of the link 82, this link being pivotally connected to the lifting block by means of the wrist pin 83 .and to the short arm 8| of the treadle by means of the pin 84. I

The operation of the device will be readily understood from an inspection of Figures 4 to 10 inclusive of the drawings, the last three figures showing diagrammatically three different stages of the pumpin operation. The distributor hose 35 which is attached to the particular unit II] which is disposed above the lifting block is connected to the point to which the lubricant is to be applied. Then the treadle 40 is depressed until it strikes the stop flange I9 on the rear end. of the supporting frame. This disposes the principal operative elements in the positions shown in Figure 8 of the drawings in which the unit I!) is lifted by the lifting block 11 which contacts with the bottom casting 50 thereof and is guided upwardly within the tubular portion 1 5 of the frame. During this movement any material within the pump chamber ill will be forced through the constriction 6m and upwardly through the hollow interior 30b of the central shaft 35, 38a, and thence outwardly through the piping 35. V 7

Next the foot is released from the treadle 4E! and the container and pump assembly [0, H allowed to fall freely under the influence of gravity and the urging of the spring 68. The bottom casting 50 of the assembly strikes the anvil enlargements [2 at the ends of the arms of the spider l3 and this has the effect of jarring the lubricant from the main reservoir into the pump chamber 10 through the adequate clearances allowed, as shown in Figure 7. Thus any air pockets or voids which may be within the pump chamber will fill up and the pump is ready for th next ejecting action which is effected, of

course, by again depressing the treadle 40. The" dropping movement of the various parts is indicated clearly in the diagram in Figure 9.

In order to bring any of the other tanks or reservoirs l0 into position for dispensing the contents thereof, the shaft l4, along with the spider l3 and the upper disk frame 22, is rotated until the selected tank and pump unit is disposed above the plunger or lifting block guide 15.

However, in order to effect this rotatable adjust- V ment, the lifting plunger 11 must be depressed sufficiently to be retracted well Within the upper margin of the guide casting l5 and below the perforated anvil block l2. To accomplish this the treadle 40 is raised to the extreme upper position shown in Figure 10 of the drawings, whereupon the lifting block or plunger 11 is Withdrawn so that the spider I 3 may be freely,

. portiontofthedrum Sllwithits contained lubricant supply is-introducedinto the reservoir. In

order to effect-this"operation the dome-like covers 27 f the reservoir togetherwith the cen- 1 tral pump-shaft-BU is depressediagainst the resiliency of I the spring 63, the pumpwshaft 3E3 descending into the pump chamber .andthe conical nut 55 freed froni the similarlyshaped recess 58 in the lugs 32-of-the upper bracket 22,. and

thus the upper ends of the shafts'30 may be with- I drawn through the slots on kerfsv 32's in th lugs i 32. The entirecontainerand-pump:unit is athus tilted about the supportingenlargements I2 at the ends of the arms of the spider I3 and. may

I be then lifted out-of the carrier-for replenish-3 ing. The covers-27ers removed togetherlwith the pump shaft and spring-68-and-thegrease cartridge inserted, whereupon the mechanism is reassembled by reversing the procedure dustdepump shaftell-by means of the tight windings 96 at the apices of :the spring-devices. As in the other embodiments the l lower end of the pump shaft 3o -isladapt'ed to-enter and-be withdrawn from the pump chamber HM-the sealing being provided-by the flanged packing element M which is clamped to the-upper edge-of the pump body IIV- bymeans of the threaded and funnelshaped annular flanged element 12. This arrangement may-well -be used when very compact lubricants are dispensed. The larger: convolutions of each-spiralareadaptedtorest against abutments extendinginwardly from the walls of the reservoir-I0 and exemplified-by the pins or hooks 98. During the ascent-and descent of the reservoir thespringswill be deformed by alternate stretching and compression and this has-lithe result -of whipping the lubricant upon every pump strokeand thus modifying the consistency thereof and rendering the packing easier. Theaarrangement shown in Figure 12 may of course be applied .to any of the embodiments illustrated.

The principles of the invention may be applied to a compressor. 'or.;dispenser having mechanical or power driven. control just as well asin. the case of the manually operateddevice. One eX- ample of a mechanically driven dispenser is shown diagrammatically in Figures 13,.14yand 15 of the drawings. 'For. purposes ofillustration,..the device is carried by a verticalv shaft ABE! secured to a wall or other fixed support MI by means of l the fastening elements I02. Fixed upon the vertical shaft Hill are the threebracketarms I03,

I04, and H15. Thebracket Hi4 carries the perfow rated anvil enlargement II2 upon which the lower end I I I of the reservoir I H) rests, the lower portion III containing the pump chamber I12. The cover I21 carries the pump. shaft I30. just as in the case of the other embodiments, the as-i sembly IIfl, I21 being urged apart by means of the coil spring I63. The upper ordis'charge end i of the hollow shaft I30 is received within the kerfed end I32 of the bracket I03, a conical or spherical nut I55. being received within a similarly shaped recess on thebottomof the bracket enlargement or lug I32, this arrangement being it exactly analogous l to the others previously described.

The vertically I reciprocating cross-head or plunger Ill isguided in the hollow interior of the anvil abutment I-I2and is driven by the following mechanism. Rotatably mounted upon a shaft 2%. carriedby the lower bracket W5; is a 5 crank disk 26! which may be driven inthe directionindicated by the arrows, by any suitable driving means. A crank arm 2% is also carried :by the shaft 266 and rthe endfillti of the crank =arm2205 is. pivotally connectedwith the sliding plunger ill by means of the link I82. The crank uarm 265. and the shaft 2% are freely rotatable =upontheebracket 1.05 and the crank" 205 is disposed alongside the face of the drive disk MI. The disk 26? is. provided with adrive pin 2II) which is: adapted to abut the rearwardly extending portion of the crank arm 205 and to drive the crank as thedisk moves in the direction of thearrows. The. disk *may be driven fromlan independent motor or from a rotating part on themachine to be lubricated.

In Figure 13 of the drawings the partsrarein -the-positionwhich they assume at the beginning of the compression or ejection stroke. The'disk a is rotatingat a relatively slow rate of' speed .25'and the pin or abutment 2I0" moves the crank arm 235 in a clock-wisedirection. Thus the lifting cross-head I'I'I is moved upwardly through the intermediary of the connecting link I82; and the container and pump assembly III], III is raised.

and tankvassembly augmented by thepressure of thespring ItS causes theassembly to dropto the position shown-in Figure 15 whereupon the bottomtof the tank III strikes theanvilportion H2 and thezmaterial is jarredand packed into the .pump chamber I I2. "At this lowerdead center vpositionthe parts remain at rest as shownvin I Figure 15:until the abutment I I0 arrives in the upperpositionwhereupon it again contacts the arm 2G5 and drives :the crank=as shown in Figure 13.

:By. this means, anevenslow ascent of the reservoir is attained whereby a steady flow of 5 material is dispensed. through the upper; end of 1 thehollow shaft I33; and an abrupt and sudden descent of the tank is. provided for, in order to xjar the lubricant into the pump cylinder.

It is clear that the pedal. operated apparatus shownin Figures i and 5 may be constructed with a single reservoir instead of the plurality as :shown. J 'In that case theoutlet tube for lubricant which' is attached to theupper end of the hollowpistonloadimimay-be connected with a storage chamber for lubricant under pressure which 1 maybe located on the inside of the tubular upright shaft I4. 'Such-a storage chamber may be composed essentially of the cylindrical hollow shaft containing the body --of lubricant subjected to the pressure of l a piston which" compresses a the spring pressed piston. Then the accumulated lubricant in the storage chamber may be distributed by the simple manipulation of the manually operated valve, without the constant actuation of the treadle 40.

Various changes and modifications may be made in the embodiments illustrated and described herein without departing from the scope of the invention as defined by the following claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. In a dispenser for semi-solid materials, such as heavy viscous lubricants and the like, a supporting frame, a reservoir mounted for vertical reciprocation in said frame, the narrowed lower portion of the reservoir constituting the chamber of a reciprocating force pump, a hollow tubular piston fixed relatively to said frame and adapted for relative motion within said reservoir and chamber alternately to compress and eject the contents of said chamber and to withdraw from the latter to permit recharging of the chamber, an outlet opening affording communication between said chamber and the interior of the hollow tubular piston, means for intermittently and alternately lifting said reservoir to eject the contents of the chamber through the hollow piston and letting the reservoir drop upon an abutment on said frame, whereby the lubricant is packed into the pump chamber without voids or cavities, and means connecting said tubular piston to a discharge point.

2. In a dispenser for semi-solid materials, such as heavy viscous lubricants and the like, a supporting frame, a reservoir mounted for vertical reciprocation in the frame, said reservoir being provided with a cup-like bottom extension of less diameter than the upper main portion thereof, said extension comprising a reciprocatingpump chamber, a hollow piston member attached at its upper end to said frame, and extending downwardly through the reservoir, the lower end of said piston member being of a diameter to fit snugly within said pump chamber, a one-way opening in the lower end of said hollow piston member, means for vertically reciprocating said reservoir with respect to the piston member so that at the lowermost point in the downward stroke the lowerend of the piston member is withdrawn from the pump chamber and is disposed within the main portion of the reservoir, leaving an annular opening for the passage of lubricant from the main portion of the reservoir into the chamber, and whereby during the upward stroke of the reservoir the piston enters the pump chamber and forces the lubricant therein through the one-way opening and through the passageway in the hollow piston, discharge means connected with the upper end of said hollow piston, and means for abruptly terminating the downward stroke of the reservoir, whereby the impact jars the lubricant into the pump chamber and compacts it therein eliminating voids and cavities.

'3. In a dispenser for semi-solid materials, such as heavy Viscous lubricants and the like, a reservoir, a force pump having its pump chamber in the lowermost portion of said reservoir, a charging cartridge for supplying lubricant to said reservoir, said cartridge comprising a container with side walls of approximately the same size and shape as the side walls of said reservoir but having its bottom wall removed when inserted in the reservoir, means for intermittently raising and lowering said reservoir and means for abruptly terminating the lowering stroke, whereby the mass of lubricant is jarred and continually urged downwardly and fed from said cartridge container and from the upper portion of the reservoir into said pump chamber without the formation of voids or cavities.

4. In a dispenser for semi-solid materials, such as heavy viscous lubricants and the like, a supporting frame, a reservoir mounted for vertical reciprocation in said frame, an abutment carried by said supporting frame itself entirely exteriorly of said reservoir, the lower portion of the reservoir constituting the chamber of a reciprocating force pump, a piston fixed relatively to .said frame and adapted for relative motion within said reservoir and'chamber alternately to compress and eject the contents of said chamber and to withdraw from the latter to permit recharging of the chamber from the reservoir, means for intermittently and alternately lifting said reservoir to eject the contents of the chamber and letting the reservoir drop upon said abutment, whereby the jarring serves to pack the lubricant into the pump chamber without voids or cavities, and a coil spring connecting the piston and reservoir andserving'to urge the reservoir toward'its downward position, thus supplementing the force of gravity in effecting the jarring stroke, whereby the speed and kinetic energy of the lubricant is increased.

5. In a dispenser for semi-solid materials, such as heavy viscous lubricants and the like, a supporting frame, a reservoir mounted for vertical reciprocation in said frame, the lower portion of the reservoir constituting the chamber of a reciprocating force pump, a piston supported by said frame and adapted for relative motion within said reservoir and chamber alternately to compress and eject the contents of said chamber and to withdraw from the latter to permit recharging of the chamber, means for intermittently and alternately lifting said reservoir to eject the contents of the chamber and lettin the reservoir drop upon an abutment on said'frame, whereby the lubricant is packed into the pump chamber without voids or cavities, and one or more coil springs of a helical configuration conforming to the nappe of a cone disposed within the reservoir, one terminal of the spring being secured to the piston and the other to the reser voir, whereby during reciprocation of the reservoir the spring will alternately contract and expand to agitate the lubricant and thus assist in eliminating such voids.

6. In a dispenser for heavy lubricants and the 7/ like, a supporting frame, a reservoir mounted for vertical reciprocation in said frame, the lower portion of the reservoir constituting the chamber of a reciprocating force pump, a piston fixed relatively to said frame and adapted for relative motion within said reservoir and chamber alternately to compress and eject the contents of said chamber and to withdraw from the latter to permit recharging of the chamber, means for intermittently and alternately lifting said reservoir to eject the contents of the chamber and letting the reservoir drop upon an abutment on said frame, whereby the lubricant is packed into the pump chamber without voids or cavities, said last named means comprising a plunger guided in said frame beneath said abutment, a pitman operatively connected with said plunger, an actuating means for said pitman operable to raise. said plunger during the pumping stroke and adapted ,to. be released topermitthe plunger and reservoir to fall during the return-stroke.

'7. The dispensing device as set forth in claim 6 in which-said actuating-means comprises a foot lever fulcrumed on *said frame, and means pivotally connecting said pitman with said foot lever.

8. The dispensing device 'as-set forth in, claim 6, in which said, actuating means comprises a crank member, a rotary follower adapted to push said crank member through substantially onehalf revolution corresponding to the upward pumping stroke of the plunger and reservoir, and to allow said crank member to break contact with said follower during the one-half revolution corresponding to the free fall of the plunger and reservoir, and driving means for said follower.

9. The dispensing device as set forth in claim 6, in which said actuating means comprises a crank member, a rotary disk disposed adjacent the crank member and in a close parallel plane, a projection on said disk adapted to push said crank member through substantially a half revolution corresponding to the upward pumping stroke of the plunger and reservoir, and to allow said crank member to break contact with said projection during the half revolution corresponding to the free fall of the plunger and reservoir, and driving means for said disk.

10. A portable dispenser for heavy lubricants and the like, comprising a wheeled frame, a rotary carrier adjustable about a vertical axis on said frame, a plurality of reservoir and dispensing pump units mounted on said carrier, each having its pump portion in the lower part thereof, a lifting device at a fixed point on said frame, said carrier adapted to be rotated to position a selected one of said units in adjacent operative position relative to said lifting device, and means for actuating said lifting device to raise said unit and let it fall upon an abutment to jar the contents into compact condition in the pump.

11. A portable dispenser for heavy lubricants and the like, comprising a wheeled frame, a rotary carrier adjustable about a vertical axis on said frame, a plurality of reservoir and dispensing pump units mounted on said carrier, each having its pump portion in the lower part thereof, an abutment on the carrier, a lifting device at a fixed point on said frame beneath said carrier,

"said carrier adapted to be rotated to position a selected one of said units directly above said lifting device, and means for actuating said lifting device to raise said unit and let it fall upon said abutment to jar the contents into compact condition in the pump.

12. The dispenser as set forth in claim 10 in which the units are removably mounted on the carrier, the latter comprising a lower socketed member and an upper socketed member, the bottoms of said units being tiltably disposed in the sockets in the lower member and upper yieldable portions of said units, received in the units of the upper member.

13. The dispenser as set forth in claim 10 in which the units are provided with cover members, and with springs urging said cover members upwardly with respect to the reservoir portions of said units, and are removably mounted on the carrier, the latter comprising a lower socketed member and an upper socketed member, the bottoms of said units being tiltably disposed in the sockets in the lower member and the spring pressed cover members of the units being yieldably received in thessockets of the'uppermembers of the carrier.

14. In a dispenser for heavy lubricants and'the like, a supporting frame, a reservoir mounted for vertical reciprocation in said framegthelower portion of the reservoir constitutingithe chamber of a reciprocating force pump, a piston fixed relatively to said frame and adapted for relative motion within said reservoir and chamber alternately to compress and eject the contents of said ,chamber and to withdraw from the latter to permit recharging of the chamber, means for intermittently and alternately lifting said reservoir to eject the contents of the chamber and letting the reservoir drop upon an abutment on said frame, whereby the lubricant is packed into the pump chamber without voids or cavities, said last named means comprising a plunger guided in said frame beneath said abutment, and actuating means for said plunger comprising driving means for operatively engaging the plunger and raising it during the ejecting stroke and automatically disengaging at the end of said stroke to permit the plunger and reservoir to fall freely upon said abutment during the return stroke.

15. In a dispenser for semi-solid materials, such as heavy viscous lubricants and the like, a supporting frame, a reservoir mounted for vertical reciprocation in said frame, a reciprocating force pump having its chamber at the lower portion of said reservoir and adapted to communicate therewith, a piston supported for relative movement with respect to said reservoir and within said chamber alternately to compress and eject the contents of said chamber and to Withdraw from the latter to permit recharging of the chamber from the reservoir, means for intermittently and alternately lifting said reservoir during the ejection of the contents of the chamber by the piston and letting the reservoir drop upon said abutment whereby the jarring serves to pack the material into the pump chamber without voids or cavities, and spring means continually urging said reservoir downwardly toward said abutment, thus supplementing the force of gravity in effecting the jarring stroke, whereby the speed and kinetic energy of the lubricant is increased.

16. In a dispenser for semi-solid materials, such as lubricating greases and the like, a support, a reservoir having an imperforate bottom wall and being movable with respect to said support, an ejector pump chamber in the lower part of the reservoir, an anvil carried by said support beneath and exteriorly of said reservoir, means for raising said reservoir during the ejection action of said pump and for letting the reservoir drop from such raised position so that its bottom wall strikes said anvil, whereby the resulting jarring serves to pack the material into the pump chamber without voids or cavities, and without any discharge through the bottom of the reservoir.

17. In a dispenser for semi-solid materials, such as lubricating greases and the like, a support, a reservoir mounted for vertical reciprocation in said support, a reciprocating ejector pump having its pump chamber in the lower part of said reservoir, a hollow piston carried by said support and adapted for relative motion within said reservoir and said chamber alternately to compress and eject contents of the chamber and to withdraw from the latter to permit recharging of the chamber, an outlet opening affording communication between the chamber and said hollow piston, means for intermittently and alternately 2,555,532 15 18 iifting said reservoir to eject the contents of the REFERENCES CITED chamber and letting the reservoir drop upon an The following references are of record in the abutment on the frame, whereby the lubricant is file of this patent: packed into the pump chamber without voids or cavities, and means connecting said hollow piston 6 UNITED STATES PATENTS to a discharge oint. Number Name Date 787342 Moore Apr. 11, 1905 HENRI CHINCHO'LE' 877,509 Langstaff Jan. 28, 1908 970,479 Dunwoody Sept. 20, 1910 10 1,3 0,798 Riley Nov. 30, 1-920

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