US1654673A - Lubricating device - Google Patents

Description

Jan. 3, 1928. v

F. S. BARKS LUBRICAYIING DEVICE 4 Sheets-Shet 1 Jan; 3, 1928.

F. s. BARKS LUBRICATING DEVICE 4 Sheets-Sheet 2 Filed Dec. 3, 1925 Jan. 3, 1928. 1,654,673

F. s. BARKs LUBRICATING DEVICE Filed Dec. 5, 1925 4 SheetS- -Sheet 4 "UNITED ATES new . PAr-ENT OFFICE ram! ssraiaxs, or

sun. tours, mssoonr.

nunmoarme Dams.

a plication filed December a; mam-ser al Roi 72393." F

This invention relates to greasing appa ratus, and with regard to certam moresp'e- -cific' features to a portable grease pump tion may adapted to receive air upon manual operation'of a valve; the provision of a pneumatic-grease pump which is or its operation from" the ordinary pneumatic tire filling air linev class described which pumps predetermined- 1 5 and valve; the provision of apparatus of the quantities of grease; the provision of apparatus of the class described comprising in part an improved full-stroke valve gear and) cooperatingself aligning device; and the provision of a device of the classdescribedwhich is economical of manufacture, light in. weight, yet subject to little, or no derange- -ment 'in operation. Other objects will be in part obvious and. in part pointed outherein after.

' The invention accordingly consists of the elements and combinations of elements, features of construction, andarrangements of parts which will be exemplified in the structure hereinafter'described and the scope of the application of which will be indicated in the following claims.

- In the accompanying drawin in which is shown one of various possi le embodiments of the invention and a modified element therefor.

Fig. 1 is a.top plan iview of the pump, showing parts broken away; i 1 4 Fig. 2 is a longitudinal vertical section taken onfline -2-2'of Fig. 1;

Fig, 3 is a front elevation of the device showlng parts broken away in section Fig. 4 is a fragmentary rear elevatlon of p p; v a

Fig. 5 is a vertical lateral section taken on line 55 of Fig. 2; Fig. 6 is aside elevation' of a control valve with'parts broken away;

Fig. 7 is a front elevation of the control.- .valve showingparts broken away; 5 Fig. 8 is a fragmentarysec'tion showings. modified form of plunger bearing; and

Fig. 9 'is a diagrammatic plan view show ing in solid lines the arrangement of various parts whil'e in use, and in dotted lines shows the arrangement of certain partswhenthe device is not in use. 5

' vided laterally forward pump casting 11,

"by. it is bolted LgEorward end-with Similar referencecharacters indicate corresponding parts throughout the several views of the drawings.

Referring now more, particularly to Figs.

1 and v2 of the draw ngs, there is illustrated at numerals 1 and 3a pair of. longi+ -.tudinal side frames or rails. 1 Each of the frames orrails 1 and 3 is formed with a leg 5 at the front and rearand each leg 5 is provided with a swivel caster 7 The casters-7 are adaptedto stay with the legs 5, when the device is picked up aswill behereinafter de-.,

scribed. I I

The rails 1 and 3 are provided with upper horizontal flat and/or'machined surfaces 9 for the purpose of receiving bolted thereto, at the forward ends, pump casting '11. 1 9of the frames 1 and 3 have-bolted thereto a laterally formed engine casting'13. The.

a laterally formed] Rearwardly the surfaces 1 frames 1- and 3 and castings 11 and 13 form a unit. For stiffening purposes a cross-bolt 14; and spacer 16 (Figs.

between and centrally side frames. This stiflening device may be dispensed with in small sizes of the pump.

Between the castings 13 and 11 and rails 1, 3 respectively, are held bolted sidewardly extending oppositely'placed horns or hose clips 15 for the purpose .of-holding cradled therein the delivery line when not in use as 'will be further made clear.

Held also to opposite -sides of said castings 11 and 13 is a handle or grip 17, by means ofwhich the greasing device as a whole'may be lifted and transported about.

Bored lugs or ears 19 on the rear of the side frames 1 and 3 are adapted to rotatably receive .a' forged handle-bar 21 for purposes of drawin the pump about. The handlebar 21 is orged with downward extensions 23 which engagea pair of the said'legs 5 of the rails 1 and 3 and prevent descent of the bar to the floor when said bar is not in use (seeFigsr 2' and 9).

Referring now more particularly to the it may be seen that said casting' comprises I toithe side frames .1 and 3, as described.

bored plungercylinder 27 provided at its q a conventional ball check "'alve 29. 'As indicated in Fig. 2, the rear end of said plunger cylinder maybe counterboredto receive a stufling gland 31, altho 1\to 3) are pro'-' of the Longitndinally and centrally of said'flanges andformed' therewith is a flanges 25 where- .in some instances it would be'desirable to form said rear end as indicated in Fi 8, that is, witha'plain' slide bearing 33. uchslide hearings, where \wear is not excessive, -do not leak excessively and cannot be -tam .pered with to be put out of operation by" tightening 'a device such as the stufiing gland 31, g Around; a more or less central portion'of: the bore of cylinder 27 is cored an inlet pas sage or space whichleads up to a chamber 37 cast integrally with the bored cylinder 27 1 'de'r 27. .Boltedvto the flanged top The passage 35icommunicates'with the cylinder 27 atall-circumferential points within the length of said; passage 35 along the cylinof a d; chamber 37, in grease-tight. fashion, is a grease chamber 39'. The chamber or con- "from thechamber or container, -thr'ou h the v strainer47, passages 37, 35, bore ofcy inder I 27, valve 2.9,to' a supply line 49 (preferably is drawn in T p plun er end recedes over themore or less I .sides of the through the check ,valve 29 and out into tainer is provided with a lid i1. The bottom .43 thereof is provided with an openin which aligns with the upper opening 0 the chamber 37 and is adapted to receive the conical rim of a strainer 47 therein.- I

As will. later be made clear,.grea se and the like is adapted to be drawn or. forced flexible) made fast to the valved cylinder 27. To accomplish the'above purpose, a plunger 51 is caused to-reciprocate in the bored outlet end of the .7

i cylinder 27'so that its 1 forward end crosses and recrosses, the..space 35. The plunger is made to fitthe cyli'nliel' 27 snugly and as the; plungenrecede's rearwardl the check valve; 29 'automaticall closes. 4 ence, a'vacuum e cylinder 27 and" as the annu ar'openi 35 grease rushes from all ii ndet 27 and into said 0 1m der At the next forward movement 0 the plunger the grease in cylinder 27 is forced 711651111849. 'In' startin the device, it may Tbe primed. by pouring 01 into the passage 35 7 by way of the container 39. If after a period of operation the device should-lose its prime,- priming may be accomplished 'by' inverting ',;said device, removin a'plug 53- leadin to r chamber Y35 and pouring oil orthe like'mtov said chamber 35. This. latter method of Jpriming. saves 7 the operation of removing grease from the container 39 in orderto get oil'into the passage 35'.

reciprocate't e plunger, an air-engine E. is device.- is with and cast 7 comprises aworkcylinder 55130 w -The alr enfi'ixne E 'ch,is longitudihally cast, on

in the sha piston, so that t 'tem is provided fordriving the valve gearto" -be described." 1 I j I Across-shaped lug 83 is-cast onl the top center. line, a spring cylinder 57.

These cylindersare "adapted (as a unit) tov ed on center line with" the cylinder 27,a t east approximately.

Passing through the cylinder 57 and into cylinder 55 is a'piston rod 59. -The"r0dr59 passes'out of the forward. end of said 'cylinder 57 and cooperates :with the plunger 51- by means of a counter bore and cross pin combination 61. The stated combination 61 is' permanent, but during assembly permits of. some misalignment ' between'the cylinders 55, 57 an 27, in so far as the 'c'oun'terbore 59 may be'made somewhat larger than the diameter of plunger 51.

.At the rear end, the rod 59 .is prqvided with a driving piston 63. The piston-com prises. a'backing-p'late 65, a'leather piston 67 and a clamping cup 69, all held to a shoulder on..-rod 59 by means of at nut as shown. The'cup 69 is flan ed out iarther'than'is the I relatively soft pistqficannot strike the head 71 of the cylinder 55. Thepiston 63 isnormally held to the left or v rear endof its cylinder by means of-a spring 73 reacting betweenjsalcl piston and the.

front of cylinder 57,

ngfstem 75 for the' va l gear of I engine E is supported with regard to, and moves with the piston rod 59.- It is so sup- 5, "ported for the said movement" by screwing the rear end of it into the piston",63- and plnmng the forward end into a vertical bracket 77, which bracket is heldby means ofa tight fit, and set screw 79, to the for- 0 ward jointed end of the pistonrod 59 (Fig. 1). The said rod 75 passes through .a proper *passtage jntlie head end ofcylinder 55 and is steadied b passage through an ear-.81 "at the q 11 otthe cylinder 57. -It is clear 1053- that .by means of the construction described, the piston rod .59 cannot twist out o f.iits assembledjposition anda rugged aligning sy s.-

of the work cylinder 5.5. The lug is rovided with a. longitudinal bore 85 for sli ably re-f ositive movementlimiting heads 89 and 91 'areprovided at'the 115 rear and front ends respectively of this valve. 4 3

ceiving a valve 87."-

The front head '91 serve lg 9 lock a valve m'193 to the valve.

Vertically drilled across the 'valvefbqr 85 .are pamages 95 and 97 servin u inlet and ex- 'haust purposes respectively.

} .hesepas'sages are both joined toa cylinder we of a common assagedOl, w ichis al o. dr' led, and therea ter end-plugged as shown intthevdrawings. Thepassage 101 is.inter- 9.- pose'd between: the valve 87'. and the interior.:.

oi cylinder 55; j The exhaust passage 97 leads direct to' the atmosphere andthe Qinlet passage is provided- A with a conventional air in-;- letplug108;

ort 99 by f ennie i To bring air to the inlet passage 95 it is I only necessary to hold a conventional airnozzle 105 (such as is usedfor filling 'auto-' mobile tiresand available at most garages). to the plug 103. The. plug 103 and nozzle 105 mutually open one another and air may flow from the compressed air line 107, associated' with said nozzle 105, to the inlet passage 95. The description of the plug 103 and nozzle 105'is,not detailed here, inasmuch. as their constructions and combination are well known, conventional, and", are not claimed herein to be new per se.

In order to hold the nozzle 105 to the plug 103, a hinge block 109is held to' the lug 83 by means of a shoulder on'the plug 103. To this block 109 is hinged an adjustable saddle member 111. which is adapted to swingover the nozzle 105'andbeclamped down thereon,

thereby holding the nozzle in place for delivering air. Wing nuts 113 make removal- ,of the saddle lll'from the nozzle 105 ea's and handy, whereupon the nozzle may rea ily be removed by lifting, and whence air automatically ceases to flow from the nozzle 7 105, or tend to flow into the passage 95.

'Returning to the valve construction, the

drawings (Fig. 2) show that the valve 87- is provided with a groove 115 adapted to reg ister with the said-inlet passage 95 and outlet pass-age 97 when the valve is in its maximumrearward and forward positions respectively. Hence, by positioning the valve 87 stroke as hereinbefore described.-

rearwardly, the exhaust passage 97 is closed, while the inlet passage 95 is opened whereby compressed air may'pa'ss from the line 107, through the open nozzle 105,,open plug 103, passage 95 and groove 115, passage 101, pa ssage 99 and to, the cylinder 55, where work is done to press the-piston 63 iorwlardly against the action of spring 73. By this means the plunger-51 is madeto take agrease forcing Next,,by positioning-the valve 85 forwardly, the groove 115 a igns with the exhaust passage 97, as shown in Fig.2, whereupon the inlet passagepermitsmovement-of air' from the cylinder 55 through passages 99, 101, 97 andgroove 115. Such movement of air is caused 4 b; the tendency of the air to:re-1expan'd an .the, V 0

to. full stroke position as described, although rearward positions, so' that pumping may becontinuous when desired,- the following fullstroke mechanism is 95 is closed. This action Vertically fastened to the driving rod is fastened a driving bracket 117 a apted to slidably engage the valve stem 93. Springs ,119 and 121 arepIaoedoVersaid stem'93' rearwardly lan'd forwardly respectively. These'sprmgs 119 and 121 respectively engage the' said head 91 and'a'nother head 123 I of the stem 13. The bracket 117 engages the "springs in its travel back and forth along to prevent the valve 87 from movgiven stroke of the piston atevery movement thereof, it is recessed at points 125 and 127.' Corresponding points on the recesses are a distance apart equal to the dlstance between the passages 95 and'97.

sage-85, at a pointcorresponding' to the position of recess 125 when the valve 87 is in forward position, is apassage 129 (see Fig. 5). On each side ofthe valve 87 in the recess 125 is (placed a ball 131. The balls are each backe by a compressedspring 133 reacting against a retaining plu 135. By this means the valve 87 maybe resiliently held in either'its exhaust or inlet position, de-

pending upon which recess-125 or 127, the balls 131 are cooperatin with.

When the driving bracket 117 movesagainst the spring 119 (Fig. 2) and substantially compresses it, the rearward mo-. tion of the piston 63 is adapted to be about Formed horizontally across the valve pas:

completed. In the meantime the recess 125 and'ba'lls 131 have caused the valve 87 not to be moved, des ite the partial compression of s ring 119.-

13 1, and thevalve 87 moves under action of inallyflatfor near the end of t e stroke of piston 63, the sprin is the spring119. 'The valve must move rear-- ward yfits full stroke, because as the high ridge 137 between the recesses and 127 passes the balls 131, the inward movement of the balls into the recess 127 forces the valve the spring 119, may by this time haveexpanded to such a position that it would not,

-without the full stroke feature, be able tomove the valve to a position such that the as the valve opens the inlet air port 95, the

motion of thepiston is reversed to a forward direction, and reversal of the above' events takes place. This time, however, the sp'ring121 comes into play, while spring 119 is ,idle. The reverse events will. be obvious from the foregoing. I

The-pumping action by means 7, of the pumped to the line 49.

- In order to control the pumping action of the device, the supply line 49 is provided with a manually operable valve. V (Figs. 6, 7 and 9). This valve V may comprise, any

- of numerous types. It-has for its purpose merely the closlngand opening of line 49 whereby pumping'by the-engine E is pre-. vented, or permitted to take place',- a's'desired. If the line 49 is positively closed, the air engine ceases to operate. because grease cannot be e'ected with the normal air pressure, availa le. If the line is opened of {tinues operation until said line is again course. grease can pass and the air engineautomatically commences operation and conclosed. 7 be above described startin and. stopping events can be initiated'at su stantially any'stage of the cyclic action'of the en e E. If the engine is exhausting'when va ve V is closed the spring 73 continues forcing the piston toward the head 71, in-so far asthe rearward action of plunger 51, due

to the checkvalve 29, is independent of con 3o ditions in line 49. The piston .is then ready for forward travel whenever the .line 49 is opened to permit the predeterminedain pressure in line 107 to take effect. The fact v that the air engine can be stopped' by closing ressures are attaina 1c in the outlet line 139 valve V does not im ly that only low grease eading from-the valve, forif the said line 139 is conneetedwith nearly clogged bearthe obstruction with only a nominal air presings, several :thousand ounds per square inch of pressure may be rought to bear on sure in cylinder 55. This is due to the ratio of the diameters of piston 63 and plunger 51. The closing of valve V, 'however,' resists the high pressure. The valve. V, for example, may comprise the; device shown in- Figs-6 and 7.""1his embodies in one unit,

"147.- The jcylin The said outlet orms part ofithe cylin- 2t the top of the valve, which a grip 141into which is screwed an inlet ipe 143v adapted to connect with the said f ne 49 from the grease pump. The grip 141 forms part of a .castin 145 whichis receive a. ollow cylinderr 147 may be-used to deliver ease, or a' roper line'and feeding tip may e conne'cte thereto,' depending' upon the t e of in servicercontemplated.

bored to slidablg der 147 Forced tightfy against ashoulderof the cylinder1147 is a flange 149 1331)]! which are fastened a pair ;of sidewa' y extending.

e trigger 153 engages a connecting? 155 pinned .to vertical lu'gs 157 east with the piece145. A sto 159 prevents excessive motion forward of t e trigger 153. It is obvious from the foregoing that forward and backward movem'entof the cylinder 147 may be accomplished by moving the trigger forward and backward.

A spring 161 r'eacting betweena plugv 163 screwed into the casting 145, and the cylinder 147, normally holds" the cylinder forward when the trigger isvreleased to assume its dotted line position shown in- Fig. 6. Whenthe trigger is drawn rearwardly to its solid line pos tion, the cylinder 147 is pulled rearwardly against the pressure ofgspring 1611 whereby a lateral passage 1-65 in the cylinder aligns with a passage l67 in. the castin' 145; The passage 167 communicates with t e pipe 143' and line 49.."Hence when the triggeris drawn rearwardly, the valve V- is'open and, as described, theair engineE begins to pump grease. When the trigger is released the-passages 165 and 167 are'disaligned by means of spring 161 and the valve is'closd, whereupon the air engine can'- :not'and will not act in re ard to pumpin of the grease. It is now evi eat that eontro of.

the ail-engine and therefore control of-the grease flow is had'from the valve V.

Fig. 9"indijcates a complete amembly of the apparatus and illustrates in dotted lines means of the 11 Ward handle-17.;- Movement from one air me, such as line 107, to an' other like one is readily accomplishedmere- 1y by'loos'ening one line and applying the other. No manually operable valves can be operations to be performedby. an operator.

'leftopen. The device is simple in'application in sofar as there are only obvious Inview of the above, it-is believed-that the various features of this invention will" gcous results attained. 7 v

As many changes could be made in carry-- ing out theabove construction without deven-tion' are achieved and other -advanta parting fromthe scope of the invention, it

is intended that all matter contained in the above description or shown in ,theaccompanymg draw-mgsshall be interpreted as illustrative .and not in a-limiting sense.

I claim:

1; A grease pump' comprising side; i

a driving engine-fastened torthe railsat one set of ends and a' -plunger pump fastened thereto at the otherends mhereby the rails are heldftogether, a greasechamber fastoned to the pump. and means foroperatively said enginefand pump,

adapted to eject grease gouge-1a com-prising a connection adapted to allow for 'misahgnment between P pthe engine and 2. A grease pump comprising a lun er plunger t ere or om said cylinder, a grease supply chamber associated with the said cylinder, a single acting air engine for reciprocating theplunger comprising, a cylinder, a piston therein and a spring ,behind the piston, the piston being adapted to move .in one direction upon expansion of cylinder, a reclprocatingr air on one side thereof, and to move in the reverse direction under action of the spring and a full-stroke valve ,for controlling the air supply to the cylinder, operable by the movement of the piston.

7 of, and to move in the reverse direction means,

under action of said spring, and a valve gear associated with the engine adapted-to make the engine automatica 1y operable as air is fedthereto. v

4. A pump for fluids comprisin ejecting a movable member for sai ejecting means ada ted to, eject fluid therefrom, a

fluid supp y chamber associated with said said ejecting means, an air engine for moving 7 movable member comprising a cylinder, a piston' therein and resilient returnable means. behind the iston, within said cylinder, the piston being adapted to move in one direction for expansion of supplied air on one side thereofland to move 1n the r'everse direction under action of said resilient means and valve-operatin means associated with the engine ada te to make the engine automatica ly opera le as air is supplied thereto.

5'. A pump der,

a reciprocating plun er therefor ada ted to eject fluid from said cylinder, a flu1 supply chamber associated with said cylinder arranged at. right angles thereto,

an air engine comprising a cylinder substantial? with said plunger, a piston in sai v or reciprocating the plunger aligned cylinder for fluids comprising. a cylinv andaspring behind the piston withm-said inone one side thereof, and to move in the reverse dlrection under actlon 'ofsaid s rmg, and

a valve 'gear associated with t 0 engineadapted to make the engine automatically operable as air is fed thereto and plunger being positioned horizonta 1 In testimony whereof, I have signed my name to this specification this 30th day of November, 1925 I FRANK s. BAIRKYSY.

cylinder the piston being adapted to move direction-upon expanslon of air on said cylinder substantially

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