US1776466A - Pump for lubricating systems - Google Patents

Description

Sept. 23, 1930. A. M. FARMER Pull? FOR LUBR'ICATING'SYSTEMS Filed 061:. 15, 1928 3 Sheets-Sheet 1 INVENTOR Sept. 23; 1930. A. M. FARMER PUHP FOR LUBRICATING SYSTEMS- Filed Oct. 15, 1928 3 Sheets-Sheet 2 ATTO RN EYS Sept. 23, 1930; A. M. FARMER 1,776,466

PUMP FOR LUBRICATING SYSTEMS Filed Oct. 15, 1928 3 Sheets-Sheet 3 a .11 ii im I l! Ill ATTORNEYS lNVENTOR .7 Patented Sept, 23,1930

= lin;UMTED, ES TENT OFFICE j AVLBVELRT M. alumina, or DETROIT, MICHIGAN, essronon, BY Mnsnn ASSIGNMENTS, 'ro

TI-IELFARFALL columna on DETROIT, ivrrcnreAma CORPORATION OF MICHIGAN A pinup son LUBRICATING SYSTEMS Application filed- October 15, 1928. Serial No.- 312,577.

. This invention relatesto. a lubricating system for effecting the delivery, by the single actuation of a piston or other fl 1id advancinggpart, of masses of lubricant projected I through the pipes of-a unitary. system, for

contemporaneous delivery'to a plurality of different bearings or other parts tobe lubrica ted, and has for its'objectkan improved organization of parts adapted toobviate some of-the objections toapparatus of this kind which have heretofore'prevailed, particularly in the directionof making allowances for variant grades of lubricant, and of securing quick and easyaccess to the piston and plungerparts without disassembla'ge of the whole structure. Functioning withthe parts here particularly described are preferably certain valves andother controlling media appurtenant more particularly to the delivery-line '20 itself, the details of certain preferred forms I of which form the subject of now corpending applications for patent filed by me and consequently necessary tov be mentioned here only casually. 1 a

In the drawings: a Figure 1 is a sectional elevational view. of one form of the storage vessel and of the v plunger and its'associated parts. 7 Figure 2 is anendelevational view ofthis form of device taken from the right hand end as shown in Figure 1. a

Figure 3 is a partly sectional elevational view of a slightly modified form of device taken from thesame position as Figure 2.

view taken along theline 4-4 of Figure 1 and looking inthedirection of the arrows there shown. a a s Figure 5 is a side elevation of a slightly modified form of device wherein a screwactuated piston is substituted for the spring retracted piston shown in Figurel, and a variant though functionally equivalent ventdug arrangement is provided.

Figure 6-is an endelevational view of the modified form shownin Figure 5.

I Figure .7 isla detail perspective of the lubricant-controlling plunger disassociated from the other parts. i

1 I v Figure8 is a perspectiveiof one of the terslidably engages, and whenit occupies the position shown in Figure 1 in full lines, it

Figure l is an enlarged sectional detailed minal bounding 'andregulating' nuts for the plunger shown in Figure 7.

Referring first to the form of device illustrated in Figures 1, 2, and 3, A. indicates a tank or fluid receptacle, provided with a removable'cap A and preferably with a strainer A the receptacle beingdesigned to be supported from a wall or vehicle chassisby some such meansas the'bolt A passing throu h the wall'thereof. A channel or passagc B leads fromthe bottompof the tank A into a horizontal bore or passage C, in the base block E. As brought out igure 3, this bore B which continuesin a horizontal directionas the branch'D, of a flattened or slotted 5 cross section, and leads to connection at D with the chamber F wherein the piston G engages, thelatter being yieldingly held in prO ected position by the spring H, so that 7 when the piston G is forced inwardly by m manual or other pressure upon the handle 6 G, the springI-I is placed under compressive strain. One end of the spring H of course engages against one end of the piston G, whereas the other end rests upon the headed end of the centrally apertured nut J which,

except for said aperture, closes the left hand end of the bore C as viewed in Figure 1.

Centrally of-the bore C the plunger K closes the passage 13 from the storage chamber A. hen, however, it is suctionally moved, as hereinafter described, to the dotted-line position shown in Figure 1, its groove 8: K5 so registers with the bore B as to permit the flow of fluid therethrough to the horizontalpassage D. The end of bore C is closed by the removable nut L, and extending obliquely upward fromthat end of the bore C adj acentthe nut L to communication with the chamber A is a vent passage L. Below the intersection of the passage B with the fiattened bore D, the bore M extendsfurther downwardly to communication withthe lubricant-distributing line M, in which isconvenient-ly positioned a suitable valve, as M for protecting the apparatus against back pressure of the lubricant previouslyfed into the line when there is a suction condition inblage of the parts contained within the bored unitary, in that a web or neck A connects the supply or storage chamber with the piston and bored parts, in the form shown in Figure 3, a union is had between the storage shell and the lower bored body E by means of the bolts N whichpass through suitably flanged portions N of the respective shells, thus making disassemblage of the device possible without interference with the assembody E.

In the and 6, a slightly variant form of tank or container is shown at O, united by a web 0 to the piston and bore body P. If desired, this latter may be made'in two parts, the piston cylinder P" being united to the bore and plunger portion of the'mechanism by bolts 'P? passing'through flanges P The elbowed bore Q, which corresponds in function of the bore 1) in the form'shown in Fig gures l and 2, leads, when theplunger R is in suitableposition, from connection with the bore T, through which the lubricant proceeds from the storage chamber'O into the chamber S,

which is connected with the plunger bore U through the hole V in the nut V, similarly to thefun'ctioning ofthe nut J in the device shown in Figures 1 and 2. The lubricantprojecting piston W which engages in the cylinder P is preferably protected (against end thrust as 'regardsits connection with its stem Y by means of roller or similar'bearings W The stem Y which is screw-threaded passes throughthe threaded end of the cylinder P, and'rotative actuation of the stem, for effecting theprojection or retraction of the piston W, is efiected manually upon the handle or spider Y The operation of this device 1s as follows {Referring first to the form shown in Fig ures 1,2, and 3, when, due tothepositioning of the plunger K within its bore C so that the groove K is in registry with the vertical bore B, lubricant'has been allowed to pass from the storage chamber A down throughthe bore B and the horizontal, fiat- ,tened bore D into the chamber F, the device is ready forinward actuation of the piston G against the "spring The first effect of thisimovementofthe piston is to exert a pneumatic driving influence upon the plungercK,because of the connection of its bore "G with the chamberF through the central hole J in the nut J. This effects the move ment 'of 'the plunger K to the ful'l-line'posiend of the plunger K and thenut L venting into the chamber A through the channel L.

Further pressure upon the piston now I trolling member.

annular groove R within othechamber F and the horizontal? bore D, which must relieve itself by movement of the oil body through the delivery bore M and into the pipe lineM, at diffen ent points along which the-severallubricantreceiving elements are located, each preferably protected by a nipple or a sultable' conpressure upon the handle'G' the resilience of the spring H acts 'to force the piston G Uponthe cessation of backwardly, thus creating a suction condi- 7 tion which would tend to draw out some of the lubricant already projected into the line a v I g M but forrthe interposition thereinof a form of device shown in Figures 5 the pistonG acts both to'dr'aw into the chaml her F such quantity of lubricant asremain's within the bore'D and that part of the supply linev M above the valve M and also nut J, upon the plunger "'K,'-thus retracting it tolsuch a position that its groove K again eifectsa suction drawthrough theholein the registers with the feedboreBfrom the sup- I ply container, thus allowing the refilling'oi I "that partof'the system contained within the bored body E for a similar repeated actua 'tion of the plunger G, which of course will again efiec't the passage of another mass'of lubricant past the valve l line. y

In theform of'device shown in Figures 5 and 6, the same functlomng'of the parts takes place as regards the closure or opening of the bore T due to the blanking thereof by the plunger R, or the registry therewithof its In this case, however, in place of the oblique vent bore L shown in Figure 1, I provide a terminal nut Z, through V the central bore Z ofwhich the oilproject'ed in the supply 1 by the advancing movement of'the plunger.

R (to the left in the positionfhere shown) may be ventedjdirectly'to the atmosphere.

In this case, however, it is desirable that a bevelledvalve'seat Zbe, formed in the end of the nut Z for engagement by the corre- V spondingly contoured end B of the plunger B, so that when lubricant ispassing through the feed bore Tiand past the groove R in the plunger R, no leakage thereof mayoccur through and past this'nut-closec'l end of the bore U; The projection of the lubricant is, in thisform, 'efiected by the screw-ad-f vanced movement of' the pistonW- through the space S andftoward the apertured nut V. Whatevernumber of turns. may be:

thought necessary are given to the actuating stem Y of the piston W and'the pressure conditions upon the trappedlubricantthus insupply line Q and past its valveQ, in the duced result in a flow-"thereof through-the "form shown in Figures 1 and 2. Similarly the suction conditions upon the system, in-

cluding the plunger R, induced by a retractile 'movem'ent of the piston W effect the same refilling of the partsas have already been described asto the apparatus shown in Figures 1' and 2. The vent prevents the creation of a vacuum condition within the cylinder P during the forward movement of the piston W. 1 c

It will be noted that the inner end of the centrally 'apertured nutJ is shown as squared,

as at J. I The purpose of this'isto make possible its adjusted projection or retraction along the bore C, in which the plunger K engages, so that for example if it is sufliciently retracted, the plungerK'may be drawn-back suctionally far enough for its groove K to .ever, a lighter, morefreely flowing lubricant is being supplied from the chamber A, it often becomes desirable to restrict the eilective' size of the plunger-controlled stream through the bore B, and this may be effected by first removing the outside-nut L, and the plunger K, from the bore C and inserting the squared end of a rod or wrench in the squared I end J of the nut and'then rotating the latter so much further into the bore Gthat it halts the movement of the plunger K before its groove K has fully registered with the bore B, thus constricting the available passage accordingly. I

WhatIclaim is: I V

1. In a lubricating apparatus, in combination with a supply source, a plurally bored base connected therewith, an annularly grooved plunger member operatively movable withinone of said bores, adapted to consa-id supply source, means accessible from an external point for regulating the possible degree of movement of said vplunger member,

amanually actuatable piston member whereby the lubricant may be forced into a connected lubricating system in measured quantities, and a spring for eifectingthe retractile movement of sald piston member, thereby suctionally effecting the movement of said plunger member to open position with respect to its controlled bore.

2. In combination with a plurally bored base piece, a plunger member limitedly movable within one of the bores in said base, a'd justable means positioned at either end of said plunger member for influencing the possible degree of movement thereof, a man ually actuatable piston adapted to exert a propulsive influence through a connected system upon a predetermined quantity of lubricant previously admitted within certain bores in said base piece, and a supply container having a discharge openingconnected with one of the boresin said base piece which bore is adapted to be blanked by the pressure-induced movement'of said piston, againstthe further escape of lubricant-into the bored portions of said base piece. I

In combination, with a plur'ally borec body member connecteclwith a suitable supply source, an annularly grooved plunger member adapted for limited movement lengthwise of one of said bores, thereby ac cordingly regulating the possible flow of lu-' bricant from the supply source through others of said-bores, and an externally actuatable piston member adapted to force a'measured I quantity of lubricant previously admitted past said plunger member through 7 another of said bores a-ndinto a connected system, and means interposed between said piston and the adjacent end of said, plunger member whereby the limit of possible movement of the latter withinits bore maybe regulated'from an external point after pre liminary removal thereof from its bore.

4. In a lubricating apparatus, the combination, with a base memberprovided with a seriesof interconnected bores, one of which is connected with a suitable supply source and another of which leads to connection with elements whose contemporaneous lubrication is la'rly grooved plunger limitedly movable within the bore between said end closure meansfadapted to close or leave free another of'said bores which intersectits bore, according to the" position of its groove relatively to the latter, and an externally actuatable pis ton memberwhereby a measured'quantity of lubricant previously admitted past said plunger-may be forced toward said connec- 'tion' with the parts to be lubricated. trol, the possible outflow of lubricant from a 5. A measuring and propulsive unit for a plurally terminaled lubricating system, having, in combination with a body portion provided with an'interconnected system of bores, one of which is connected at its end with a suitable supply source and another of which is connected withthe lubricant distributing lated, and an actuating piston operably movable within a chambered terminal portion of one of said bores whereby lubricant admitted from the supply source into the system of bores may be regulatably advanced toward the units of the lubricant distributing system,

and means for eflecting the actuation of said piston from an external point.

6Q A lubricant-projecting mechanism, hava c ing in combination. with a .plurally bored g body connected respectively with a supply 7 source and with the line pipe of a distribution system, an accumulationchamberiinto which the lubricant may proceed from'the supply source, an externally'actuatable piston member operative within said accumulation chamber, whereby pressure or suction conditions may beselectively setup'within saidaccumulation chamber, a discharge passage through which lubricant from said accumulation chamber proceeds toward the connection with the line pipe, a plunger member movable within one of the bores in said body and according to the position of which relatively to the supply. source connection the possible travel-of lubricant therefrom toward said accumulation chamber isregulated, said plunger beingfoperatively responsive to the pressure andYsuction conditions induced by the movementbf said piston member, and means susceptible of adjustment from an outside point whereby'thedegree of possible movement of said plunger in its bore may be 1 regulatablyvaried. 7

7 In a lubricant-feeding apparatus, the

combination, with a plurally bored shell connected with a supply source andwith the sup- 3o plyline of a distribution system, a plunger,

member movably located within one of the bores in position to regulate the possible flow of lubricant through the bores of said shell, externally accessible -means whereby the possible path 'of travel of'saidplungermember within its bore may be abbreviated or lengthened, thereby influencing thedegree of said plungers potential interference with the 7 flow of the lubricant through other bores in 40 said shell, an accumulation chamber connected with certain of said bores, and a selectively operable piston member operatively active within said accumulation chamber whereby pressure and suction conditions may be regulatably induced within said accumulationichamber and its connected bores.

In testimony whereof I sign this specifica-' tion;

, ALBERT QFARMER.

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