US2123197A

US2123197A - Lubricator

Info

Publication number: US2123197A
Application number: US758076A
Authority: US
Inventors: Noble Warren
Original assignee: Sullivan Machinery Co
Current assignee: Sullivan Machinery Co
Priority date: 1934-12-18
Filing date: 1934-12-18
Publication date: 1938-07-12
Anticipated expiration: 1955-07-12

Description

July 12, 1938. w. NOBLE 2,123,197

LUBRICATOR Filed Dec. 1S, 1934 2 lsheets-sxwe'c 1 Hf Tl' ff//l/l//Z// 27 a4 i INVENTOR.

wanen Nubie BY /l' Wwn.

ATTORNEY July 12', 193s. w NBLE 2,123,191

' LUBRICATOR y FiledDec. 18, 1.934` 2 Sheets-Sheet 2 $2727 2526 ze a4 e4 Aiygl.

INVENTOR.

` Patented July 12,-'1938 p 2,123,191 culminaron Wn Noble, Michigan City, ind., assigner to Sullivan'Machinery Company, a corporation oi Massachusetts This 'invention relates to lubricators, and more particularly to improvements in a self-driven 1ubricator unit of general applicability.

' In. very many types of machinery, and especialvly those air-driven for mining and rock cutting, adequate and reliable lubrication, on which better performance, greater reliability and longer life are dependent, is still relatively unattained. In rock tools, especially, lubrication is particularly haphazard, usually depending upon slight pressure dierences set by the ilow of air inthe portings of the machine. Quantitatively it varies with the prime air pressure, the character of the edges, forms and surfaces of the ports conceived, the manufacturing clearances between associated parts, and in general, is non-susceptible to close control. Insome cas'es a new tool lubrlcates less perfectly than an old one; a worn tool .will drain its oil reservoir without taking care of the mustlie-lubricated surfaces. Diminishing performance, short life and high repair charges are inevitably invited. In other machines special conditions make it desirable to deliver a metered quantity of oil, starting ,and varying with the machine perfomance, and while the common form'bi ratchet-driven lubricator can sometimes be arranged'to deliver oil suitably, it still suiiers from many limitations that the improved selfdriven lubricator Aunit of the present invention is designed to overcome. e

VAn object of this invention is\tc provide an improved self-driven lubricatcr unit' whereby the inadequacies mentioned above are, to a great extent, overcoxne. Another object of this invention is to provide an improved self-driven lubricator unit having embodied therein a vself-contained motor driven pump whereby cw of lubricant to the various parts of the machine to be lubricated is insured. Yet another object is to provide an improved self-driven lubricator unit of an extremely compact design having embodied therein a miniature driving motor and pump mechanism .whereby lubricant is positively pumped to the tast :starts-auwmancany with the new in s. pilot' passage and stops automatically when the ilow ceases, the unit being entirely self-contained and adapted for association with ilow passages of machines'of various characters. Yet another object is to provide an improved self-driven lubricator adapted, irrespective of its supported position, automaticallyl to supply lubricant to the moving parts of the machine to be lubricated. These and other objects and advantages of the invention will, however, hereinafter more fully appear.

In the accompanying drawings there is shown for purposes of illustration'one form which the invention may assume in practice.

In these drawings,-

Fig. 1 is an end elevational view of the illustrative form of the improved lubricator unit.

Fig. 2 is a side elevational view of the lubricator unit shown in Fig. l, in supported relation with a part of the machine to be lubricated.

Fig. 3 is a view in longitudinal section taken substantially on line 3-3 of-Fig. 1.

Fig. 4 is an enlarged sectional view showing a portion of the lubricator control valve means.

Fig. 5 is a cross sectional view taken on line 5 5 of Fig. 3.

Fig. 6 is a cross sectional view taken on line -S of Fig. 3.

Fig. 'l is a cross sectional view taken on line l-l-of Fig. 3.

Fig. 8 is a cross sectional view taken on line of Fig. 3.

Figs. 9 and l0 are views similar to Fig. v6, showing the moving motor and pump parts in different y positions.. Fig. 1l is a longitudinal line ii--ii of Fig. 9.

Fig. l2 is a longitudinal line i2- -i2 of Fig. l0. l

Fig. 13 is a detail sectional view taken on line (i3-i3 ofFig. 6. s

Fig. 14 is a perspective view ci the valve bush-4 ing.

Fig. 15 is a perspectiveview of the control valve element'.

, Inthis illustrative embodiment of the invention, there is shown a self-contained, self-driven. lubricator unit, generally designated i, comparable in size tofan automotive spark plug, which' consists of a tiny engine-driven pump, whose engine is designated 2, complete in itself with all necessary associated functions, except tankage, that starts automatically with the now in the pilot passage@ and stops automatically when sectional view taken on the new ces. 'I he amount of oildelivered is sectional view taken on regulated by varying the speed of the engine by raising or lowering the back pressure of the exhaust motive iluid.

As illustrated, the improved lubricator vunit comprises a. body 4, herein preferably made of a free-cutting, case hardened steel, threaded at I5 similarly to a metric, automotive spark plug, this size being chosen for ease of obtaining good taps and dies for manufacture of the thread, and on account of the world-wide-distribution of copper asbestos gaskets for this size. Formed on the lubricator casing 4 is a gasket shoulder 8 and a larger step and shoulder 1, the shoulders 8 and 'I being spaced before. and beyond a circumferential groove 8 communicable with a suitable lubricant reservoir R and, in this instance, circumscribed `by a illter thimble 8. As clearly shown in Fig. 3, this thimble, which is preferably a brass shell, is formed with a double internal diameter to nt snugly the steps on the lubricator casing and enclose the circumferential groove 8. The zone circumscribing the groove 8 is divided into a series of louvre-like bars I slit from the shell, one set being raised outwardly from the smaller diameter of the shell in such a way as to leave narrow interstices II between the bars of the cage so formed. By making the difference in the diameter slightly more than twice the thickness of the stock from which the shell is drawn, it thus becomes possible to establish an oil filter unit with ilow apertures of known dimensions. The outer flange I2 of the oil filter unit is corrugated at I3 to provide resiliency in order to compensate for slight differences in dimension of the lubricator casing as regards the

shoulders

6 and 1 holding the lter thimble in place. The lubricator casing is formed of hexagonal shape at I4 for the reception of a wrench, beyond which is a circular head I5 in which the recesses for the working parts of the lubricator are housed.

In a bore I6 axially traversing the entire casing body lies a bushing II giving support to a crank shaft I8 of the pump driving motor 2, this crank shaft having an overhung crank pin I9. 'I'he crank shaft I8 is bored throughout its length at 20 to pass motive uid, herein pressure air, and is also drilled'obliquely at 2I to feed a. right angle air distribution port 22 located midway oi' the crank pin length and communicating with la supply port 23. 'Ihe supply port 23, and an exhaust port 24, are formed by milling narrow,

round bottom grooves normal to the axis of the crank pin and of such a depth that the section of the shaft remaining between the two grooves is only very slightly in excess of the diameter of the radial holes 25 drilled through a bushing 26 surrounding the pin. The bushing 26 forms a bearing in which the crank pin may rotate and also provides the heads for motor cylinders 21 bored in a cruciform block 28, the bushing being fixed within the block in a suitable manner. As shown in Fig. 6, this cylinder .block 28 has three similar arms or cylinder barrels 29 and a. fourth arm or cylinder barrel 30 of somewhat greater length than the other three cylinder` barrels; and this fourth longer barrel is accurately ground to two external diameters at 3l and 32 to form the piston of the oil pump. The difference in area between f these two diameters represents the piston area available for oil pumping. In order that the impulses from all four of the driving cylinders shall be entirely similar, a longer piston 33 is reciprocably Imounted in the barrel 30, while shorter pistons 34 are reciproaiaarav cably mounted inthe other three shorter cylinder barrels. The four pistons are shaped to engage slidingly the walls 33 of the chamber 34 in which the motor and pump are arranged so that when the cylinder block moves about an axis coincident with the crank shaft axis, relative reciprocation between the cylinder barrels and the pistons occurs. The longer piston 33 is ilttedrin the interior of the fourth. longer barrel 30, and the mating pump cylinder is made by boring transversely a sliding block 3'I. This block, circular in cross section, as shown in Fig. 11,.Is bored with two diameters necessary to fit closely the steps 3l, 32 of the pump plunger leg 34 of the cylinder block 28; and its duty, apart from its function as a pump cylinder and valve slide, is the maintenance of the cruciform cylinder block 28 in constant relation to the crank shaft.

As the 'crank shaft I3 rotates, manifestly the cylinder block 28 moves therewith about an axis coincident with the crank shaft axis, so sliding the pump leg 33 in and out of vthe sliding block 31 and at the same time traversing this block from side to side. The sliding block 31 slides through a distance equal to the throw of the crank shaft, and the piston or plunger 30 that it contacts slides through an equal distance at right angles thereto. The combinationof rotation and sliding thus set up enables the engine to function by reaction through its pressure urged pistons, upon the walls 35 of the casing chamber 36 in which the whole mechanism is contained. The rotation of the crank pin I3 within the surrounding bushing 26 that forms the inner heads of the cylinders of the pump barrels provides vfor properly timed intake and exhaust functions, rotation of the crank pin moving the supply and

exhaust ports

23 and 24 in timed relation` with respect to the ports 25 in the bushing. The motion of all the parts is a replica of the true `harmonic of the crank pin movement as, related to either horizontal or vertical planes. being modi-y fied only in that the pistons are permitted to abut and consequently slide upon walls 3l of the cncavity of the containing chamber 38, a circumstance that modifies their motion with relation to the true harmonic without affecting Ithe total stroke and without perceptible ei'l'ect upon the action of the entrained air. The course of the working air, after entering the crank shaft bore 20, is rst to the crank pin and to the timing port, ythence to the cylinders\'(when the motor is running there are. at all times two cylinders contributing to the torque) and then from the cylinders in which it has performed its work laterly to the exhaust space 38 surrounding the'cylinder block via the exhaust port'24 obverse to the intake 23 in the -.crank pin and a drill hole 38 in the pin end; thence to an exhaust control valve 38 which consists of a plug 43 close-fitted in a hole 4I bored between the-face of the main body and the clearance-cylinder surrounding the pump leg of the cylinder block. This plug 4I has a cross hole 42 and a screw driver slot 43 wide enough to be turned by theedge of a small coin, if desired. When this plug 46 is rotated in one direction, it makes more free the passage from the casing Ato the outerair; contrawise, it reduces the freedom of communication -with the 'aperture 44 available for exhaust, and by raising aiaaie? the sndnig vlve block a1 which has a. hole 45 located in its transverse central plane communicating, as to the valve block, with the differential pump barrel 30, and as to the body, alternately with one or the other of two drilled

passages

46 and 41 vcommunicating respectively with the source of the*incoming oil and the discharge passage for the oil leaving the pump. Communication with these passages isalternately setup by the reciprocation of the sliding block 31 as the crank shaft turns. Oil coming to the pump is drawn from the lubricant reservoir R derived and into which the metered lubricating oil is to be discharged.

Arranged at the threaded end 5 of the lubricatorcasing and projecting in the pilot passage 3 is' a flow sensitive valve 55. This valve, slightly.

smaller than the crankshaft diameter, is assembled with the crank shaft by means of a cross pin V56, which passesv through an oversizeA hole 51 in the'valve ,shank 58, though tight in,

the crank shaft itself. The endl of the -crank shaft I8 isformed as aflat'valve seat 59 lapped true and highly finished. Opposed to it on the control valve is a similar face 69 in cooperation acting to seal the entrance of the crank shaft I8 against admittance of the surrounding pressure air. The outer end of this pilot valve, which in general coincides with theaxis ofthe flow passage 3, is formed as a sphere at 6I, the.

bar 62 between the sphere and the valve head 55 f being relatively slender. With quiescent air in 'the passage 3, the form of the spherical valve head and bar is without influence and the valve 55 acts in conjunction with the end of the crank shaft merely as a. check valve. When, however, vairv starts to flow in the conduit 3, the restriction of the passage created by the presence of the body of the pilot valve, together with the aero- Vdynamic properties of the v'alve itself, cause a for .the use of'screws, springs or other holding devices which might unlock,l.break or be'endangered by vibration. 'I'he sliding -block 31. is inserted in its bore, and then the cruciform cylinder block 28, assembled with its pistons, is introducedpart wayin the valve block 31, this be,-

ing. done with its cylinder `block normal to its nal position. .'I'he crank shaft bushing l1l is at this time lacking, although the crank shaft I8 has I been completely assembled with the pilot valve 55. A recess 64 suiiiciently deep toA permit the crank pin to be dropped downv entirely out of the way of the cylinder block as it is swung into its working plane, is formed 'in the lubricator casing. Into this recess thecrank shaft is loosely set and once in this position the bushing I1 is slipped over the crank shaft I8and brought into place, thus locating the shaft properly in all directions with respect to the rest of the mechanism. The cross pin 65, as shown in Fig. 4, is inserted within the alined openings in the casing and bushing I1 and staked into place for final retention. The lubricator casing is counter-bored at 665 tor shoulder a pair of brass rings 6], 61 with ytheir associated

cork washers

68, 68 and a thick plane glass medallion 69 shared between them. The center extension 10 of the crank pin, actually an extension of the crank shaft, has its end madetruly flat and its cross section slightly less than a complete circle. Highly polished, it is employed as al thrust bearingin direct contact with the glass plate69, and the static thrust of the" crankshaft is taken by the'crank pin extension against the glass medallion. The glass medallion 69 thus closes the chambering'within the lubricator casing and acts as an inspectionport and supports this duty.` The sub-assembly comp1'ete,an outer.

case ring 1l,'a carburized and hardened steel ringv capableiof withstanding great abuse, is pressed into place on the exterior of the' casing 4 enclosing the pump chamber 36, and, whenthus placed,

, locked and certiiied4 by means ofalead-wire seal 12. On theiace of thisfsteel ring vare the necessary indiciarelating to thel supply of oil and the makers style and number. A Where the glass medallionJ 69 is considered undesirable or unnecessary, itsplacemay be taken by a metallic plate or the chamberingfor the glass 'and thebezel bore in the case ring 1I entirely eliminated.

The general mode of operation of the improved lubricator unit will be clearly-apparent# from the description given. As shown in Fig. 2, the lubricator unit is suitably secured into placefwithin a suitable threaded opening formed in 'the casing of the machine to be lubricated with' the control portions 6I, 62 of the control valve55 projecting within the pilot passage 3 in the manner shown.

When the air pressure in the passage 3 vis quicscent, the entire lubricator unit is shut down and no fiow of lubricant takes place. However, when the machine to be lubricated is started and a flow of pressure fluid occurs inthe'passage 3, the valve 55 is tilted by the action of the owing iiuid on the control portion 6I, 62 of the valve, thereby permitting flow of pressure iiuid past the valve through the passage 20 in the crankr shaft I8,

through the passage 2|, port 22 port 23 'and through the 'ports in the bushing 26 to the cylinders of thel motor, the pressure fluid acting on the inner pressure areas of the motor cylinders to effect rotary motion of the cylinderblock 28 within the chamber 36. This rotary motion of. the cylinder block causes reciprocatorymotion of the valving block 31, controlling( its discharge of lubricant from the pump barrel through the discharge passage to the chamberl 58 and thence through the helicalgrooves 52 on the bushing I1 to discharge into the air flow passage 3,'the discharging lubricant being entrained bythe flowing .air to the. various parts of the machine to be lubricated. It will thusbe seen `that the improved lubricatoris entirely; self-contained, is self-driven', and embodies its.own'motor,driven pump so thatthe entire unit maybe attached in various locations with-respect to various machinesto supply lubricant, irrespectiveof `its attached position, toV any passage through which pressure fluid flows. These and other uses and advantages of the improved lubricator will be.

clearly apparent to those skilled in the art.

While there is in this application specifically described one form which the invention may assume in practice, it will be understood-that this and embodied in various other forms without departing from its spirit or the scope of the append-v 5 ed claims.

What I claim as new and desire to secure by 'Letters Patent is: l

1. In a self-contained lubricator unit adapted for connection to a pressure iluid supply line, a

10 .casing having a chamber, a motor driven pump arranged in said chamber and having lubricnt intake and discharge passage means, said lubricant discharge passage means discharging intoV the supply line, a pressure iluid actuated driving motor in said chamber for driving said pump, and valvemeans for controlling the flow of motive fluid from the supply line to said motor, said pump con-.- stantly operating to eilect its lubricant pumping function during iiuid ilow in said supply line.

2. In a self-contained lubricator unit adapted for connection to a pressure iluid supply line, a casing havingla chamber, a motor driven pump arranged in said chamber and having lubricant intake and discharge means,a pressure iluid actuated driving motor in said chamber i'or driving said pump, valve means for controlling the flow oi.' motive fluid from the supply line to said motor. and valve means for controlling the motor exhaust to vary the motor speed.

3. In a lubricator unit, a casing having a chamber and communicable with a passage in which motive i'iuid is adapted to flow, a fluid vactuated motor in said chamber, a lubricant pump driven by said motor, passage means for supplyingv motive iluid from the ilow passage to the intakeo! the motor, valve means Vcontrolled by the flow o! iiuid in the ilow 'passage for controlling. the ilow ot motive fluid to said motor. and lubricant intake and discharge passage means for said pump.

4; In s. lubricator, a casing having a chamber f and communicable with a passage in which motive fluid is adapted to iiow, a fluid actuated motor in said chamber. a lubricant pump driven by said motor, passage means for supplying-motive iiuid sa yirom the ilow passage tc the intake oi the motor,

valve means controlled Vby theilow of fluid in the iiow passage 'iorcontrolling the Vilow of motive iluid to the intake passage means of said motor,

lubricant intake and discharge passage means i'cr ga said pump. and valve means for controlling the motor speed by varying the motor exhaust.

6. In a self-driven lubricator, a lubricator casing. a fluid actuated motorin said casing. a pump in said casing and driven by said motor. intake sg and discharge passage means for said pump,

motive fluid intake and discharge passage means for said motor, and valve means for .controllingl the iicw o! motive iiuid to said motor intake passage means automatically in accordance with the requirements of a machine to be lubricated, said motor operating constantly to eii'ect actuation of said pump and said pump constantly operating to eil'ect its lubricant pumping function to supply lubricant to the machine to be lubricated during operation o! the latter. B. In a seit-driven lubricator, a lubricator casing, auid actuated motor in said casing, a pump driven by said motor, lubricant intake and dis-v charge passage means for said pump, motive duid intake and discharge passage means -for said motor.A valve means iorcontrolling the flow oi motive iluid to-said motor intake passage means automatically in accordance with the require- .ments of a machine to be lubricated, 'and means communicate with a commonpassage through cant intake and discharge -l means lorsaid motor.

f tor said pump, and motive iiuid intake and disfor regulating the .motorexhaust vary the motor speed.

7. In a sell-driven lubricator adapted tor ccnnection to a pressure fluid supply line, a casing,

apressure fluid actuated motor in said casing and ii` .through saidsupply line..

8. In a self-driven lubricator. a casing, a uid actuatedmotor in said casing comprising means providing a motor chamber containing a movable motor piston, a pump in said casing and driven by said motor, lubricant intake and discharge passage means for said pump, and motive duid intake and discharge passage means alternately communicating with the motor chamber of said motor, the lubricant discharge passage means and the motive nuid intake passage means having terminals located in adiacency 'and adapted to which motive fluid continuously iiows during op- A eration of a pressure iiuid actuated machine tc be lubricated. l

9. In a self-driven lubricator', a casing, a iiuid actuated motor vin said casing. a pump in said casing and driven by said motor, lubricant intake anddischarge passage means lor said pump.

motive .iiuid intake and discharge passagemeans for vsaid motor, the lubricant discharge passage means and the motive iiuid intake passage meanshaving terminals lodated in adiacency and adapted to communicate with a common passage through which motive fluid is adapted to iiow. and valve means controlled by thenow of pressure through vsaid passage for regulating the ilow of iiuid to the motive fluid intake passage means.

10. In a sell-driven lubricatona casing, a duid actuated motor in said casing, a pump in said casing and driven by said motor, the piston element of Said pump constituting a cylinder element of said motor. lubricant intake and discharge passage means lor s'aid pump. and motive nuidintake and Adischarge passage meanstor said motor.

. 11. In a self-driven lubricator, a casing. a duid actuated motor in said casing. a-pump in said casing and driven by said motor. said motor comprising a cylinder block movable about an axis and having cylinders in which pistons are ccntained. said cylinders and pistons being relatively reciprocable and s. cylinder of said motor ccnstituting the piston element of said pump. lubripassage means -ior said pump. and motive duid intake and discharge 12. In a seit-driven lubrlcatcr. a casing. a duid actuated .motor in said casing and having a tabular crank shams-pump driven by said motor. lubricant intake and-discharge passage means 0 charge passage means for said motor. the motive 7 iluid intake passage means including the passage in said tubular crank shalt. f

18. In a sell-driven lubricator, a casing, a duid actuated motor in said casing and having la a tubular crank shaft, a pump driven by said motor, lubricant intake and discharge passage means for said pump, motive uid intake and discharge passage means for said motor, the motive fluid intake means including the ,passage in said tubular crank shaft, and a valve seated-on the end of said crank shaft for controlling the flow of motive fluid therethrough to said motor. 14. In a lubricator unit, a casing connectible with-alubricant reservoir and a pressure fluid conducting passage, a pressure fluid 4actuated motor lin said casing', a pump in said-casing and driven by said motor, lubricant 'intake and discharge passage means for said pump communicating-respectively with said reservoir and-said iiuid conducting passage, motive. fluid 4intake passage means for supplying uid from said uid conducting passage to said motor for vactuating the'latter, and motor exhaustI passage means, 'said motor loperating constantly to effect actui ation ofsaidV pump and said pump'constantly operating to Yeffect its lubricant pumping function during flow of fluid in said fluid conducting passage and irrespective ofv the supported position of the lubricator unit.

. with a lubricant reservoir and a pressure uid conducting passage, a pressure uid actuated motor in said casing, va pump in said casing and driven by said motor, lubricant intake and discharge passage means for-saidl pump communicatingrespectively with said reservoir and said uid passage, motive uid intake passage means for supplying iiuid 'from said fluid passage tosaid motor for actuating the latter, motor exhaust passage means, and means for governing the flow o f uid to said motor controlled by uidow in saidpassage.

16. In a lubricator unit, a casing connectibleV -for supplying iiuid from said fluid passage to said motor for'actuating the latter, motor exhaust passage means, means for governing the ow of uid to said motor controlled by fluid flow in said passage, and means for regulating the motor exhaust to vary the motor speed.

17. In a lubricator adapted for connection to a pressure fluid supply line, a lubricator casing,

a motor driven pump in said casing and having lubricant intake and discharge passage means, a pressure uid actuated motor in said casing for driving said pump, and valve controlled means for supplying pressure :duid from theA supply line to said motor automatically upon ow of pressure uid through the supply line, said pump constantly operating to effect its lubricant pumping function to discharge lubricant to the supply line duringiow of pressure fluid from lubricant intake and discharge passage means,

a pressure uid actuated motor in said casing for driving said pump, -passage means in ,said

casing for supplying pressure fluid from the'supply line to said motor, and valve means regulated automatically by the flow of pressure fluid through the supply line for controlling the :dow

for driving said pump, passage means in said casing for supplying pressure fluid from the supply line to said motor, and valve means regu- Jof pressure fluid in said pressureiluid .supply lated automatically by the flow of pressureuid through the supply line for controlling the flow of pressure fluid in said pressure iiuid supply passage-means, said valve having an actuating portionprojecting within the supply line and upon which the flowing pressure fluid in the supply line acts.

20. In a lubricating means, the combination witha conduit through which pressure fluid flows, of a lubricator unit connected to said conduit and embodying a motor driven lubricator pump actuated bythe pressure fluid in the conduit and constantly operating to effect its lubricant pumping function to supply lubricantvto the conduit whenever flow of pressure fluid through the latter occurs and irrespective of the supported position of the lubricator unit.

21. In a. lubricator unit, a casing having a chamber and communicable with a passage in which motive uid flows, a motor in said chamber and having a motive fluid intake, a lubricant pump driven by said motor and having lubricant intake and discharge passage means, and passage means for supplying motive fluid from the flow passage to the intake of the motor, said pump constantly operating to effect its lubricant pump- 1 ing function to discharge lubricant to said motive fluid passage during flow of 4motive uid tov said l motor intake passage means and regardless of the supported position ofthe lubricator unit.

22. In a lubricator' unit, a casing having a chamberand communicable with ay passage in which motive fluid flows, a fluid ,actuated motor in said chamberand having a motive uid intake and exhaust, a lubricant pump driven by said `motor and having lubricant intake and discharge 23. In a self-driven lubricator, a. casing, a uid actuated motor in said casing comprising meansproviding a motor chamber containing a movable motor piston, a pump in said casing and driven by said motor, an element of said pump constituting an element of said motor, lubricant intake'and discharge passage means for said pump, and motive uid intake and discharge passage means alternately communicating with the piston chamber of said motor, said pump operating constantly to effect its lubricant pumping function to discharge lubricant during iiow of motive fluid to said motor intake passage means. 24. In a self-driven lubricator, a casing, a iiuid' actuated motor in said casing comprising means providing a motor chamberV containing a movable motor piston, a pump in said casing and drivenby said motor, said motor including a motor element movable about an axis and constituting anelement of said pump,lubricant intake anddischarge passage means for said pump, and motive iiuid intake and discharge means alternately communicating with the piston chamber of said motor.

25. In a self-driven lubricator, 4a lubricator casing, a'iluld actuated motor in said casing and comprisinglmeans Aproviding a motor chamber containing a movable motor piston, a lubricant pump in said casing and driven by said motor. lubricant intake and discharge passage means for said pump. and motive fluid intake and discharge passagemeans alternately communicating with the piston chamber of. said motor, the lubricant discharge passage means and the motive iluid intake passage means having terminals loted In adiacency and communicable with a common passage through which motive fluid ilovs. and said pump constantly operating to eil'ect its lubricant pumping function to discharge lubricant through said discharge passage means to said common passage during now o! motive iluid in said common passage.

WARREN NO'BII.