US1746604A - Double-action lubricant compressor - Google Patents

Description

Fel. 11, 1930. E; PIQUEREZ 1,746,504

DOUBLE ACTION LUBRICANT COMPRESSOR Fild April 15, 1925 2 sneetsfsneet 1 Feb. 11', 1930. l E. PlQUEREz i 1,746,604

' DOUBLE ACTION LUBRICANT COMPRESSOR Filed April :L5l 1925 2 sheets-sheet 2 4 32 I 27g, @a/enfer maze Hu/ef'rcz.

lilratented Feb. 11, 1930 y UNITED s-TA EMILE PIQUEREZ, F PARIS,

'ras 'Parr-:NTI oFFlcr.

FRANCE, ASSIGNOB T0 ALEMITE CORE'QBATION, 0F CHICAGO; ILLINOIS, A CGRPORATION 0F DELAWARE l D-OUBL-ACTION LUBBICANT COMPBESSGB f Appncauon med prix 15, 1925, serial 1ro. 23,351, aim i This invention relates to force fed lubrication and more specifically to an improved dispensing device for use in such lubrication.

Among the primary objects of the invention may be enumerated the delivery of lubricant at moderate pressure in relatively large uantities, or in smaller quantities at a much igher pressure, the change from one form of discharge to the stantaneously by a simple manipulation of the device.

The embodiment for delivering any liquid, body such as grease, oil, petroleum jelly, gasoline, etc., kept in changeable reservoir substantially attached to the body of the device'. Thus the combination permits use ofy the apparatus to inject different liquids at will by simply replacing the reservoir, which can be done in an instant.

Thus the invention the structure of the compressor and its particular combination with a removable reservoir suitable for all lubricating and cleanin uses. particularly' adapted for use with the com- 'dge for feeding the disclosed is also adapted pressor as a refill cartri same. p

Inv the accompanying drawings Fig. 1 is a longitudinal section of a compressor adapted to discharge either'at moderate or at very high pressure. FFig. 2 is a cross section on line 2 2 of lglig. 3 is a longitudinal section of a simplified compressor discharging at moderate pressure only.

Fig. 4 is a fragmentary elevation of the pump body showing the operating plunger and its handle.

Fig. 5-is a fragmentary longitudinal sectionof the reservoir employed in connection with a li uid such as oil.

Fig. 6 1s a transverse section of the reservoir plug.

In the embodiment of the invention selectedv for villustration inFigs. 1 and 2, the pump body 1 is provided with a bore 2 for receiving the operating rod 3 of piston 4, moy- 50 able in compression cylinder 5 formed 1n other being made inviscous or plastic includes, particularly,`

It also involves, the reservoir itself,

the bore 2.

portion is limited by n France June 18, 1924.

body 1 between bore 2 and the discharge pas-1 sage 6.'

,An inlet passage being suitably inclined able lubricant reservoir 7 opens into cylinder 5,

to receive the remov- 8 fastenedV to the tube 7 by a suitable tight fastening such as a threaded joint, a bayonet slot reservoir is provided with ably attached as by means o to a cover 11, threaded or on the 4reservoir 8, s

with an air vent 11a.

Body 1 is provided with an enlargement 12, split intotwo pieces a removable and 1nter- The fixed portion v 'oint, etc. The a ollower 9 suitf a small chain 10 suitably attached aid cover being 1a and 1b. (See Fig. 2.) 1, integral with body 1,

carries two bolts 13, fastened as by a threaded connection and guiding the piece 1", which is normally held free end and a threa centric so as not to drical seatin body by spring 14 in the out of contact by springs 14) entering formed in sections 1 and centric with bolts 13.

The control rod 3 c the periphery of the Rod 3 can, ltherefore,

with rod 3 sockets 15 and 16 1b respectively, conarries handle 17 at its ded portion 3 formed ecproect from one side of ro as shown in Fig. 2. slide freely in its cylin- 1 when section 1b is held 'position of Fig. 2. lSection 1b is threaded to fit the threads on rod 3, and has a projection 18 for operating the same. Inits outermost position the upper thread of the `threaded portion 3l abuts a split ring 19 seated in groove The other en 21, and the 2O in the end of d of the threaded abutment with packing bottom of cylinder 2, said packing being compressed into its seat to hold it in place.

Valve means such as ball valve 22 pressed against opening 23 of diaphragm 24, threaded to the bottom bearing on another of passage 6, by spring 25 diaphragm 26 similarly threaded in place, prevents return flow into compression cylinder 5.

` The operation is as follows:

Assume that the c ompressor 1s to be used to inject grease from reservoir 8 in considerable quantities at mo der handle 17 develops grease through con ate pressure. A pull on suction and draws the duit 7 to fill cylinder 5.

provided The subsequent down stroke of handle 17 and piston 4 compresses the lubricant in cylinder 5 to force it past ball .valve 22 into delivery assage 6. The operation can be continued y reciprocation of piston like the piston of a s inge.

f, however, the lubricant must be discharged under high pressure, as will be the case whenever the resistance to the passage of lubricant into the parts to .be lubricated is too great to permit operation of the piston by rectilinear displacement, the deve opment of ressure by the screw thread is available. T us a pressure of the thumb on boss 18 with the hand holding the body will draw section 1h into engagement with the threads on the rod. Handle 17 is now rotated to lift the piston to produce the necessary suction to draw lubricant into cylinder 5. By rotating in the opposite direction the piston is forced down and the lubricant forced out through opening 23.

The very high discharge pressure thus ob tained can overcome the high resistance of the lubricant, and when this resistance is once broken down, the ordinary method of reciprocating the piston may be employed, for further-injection.

In the simplified embodiment of Figs. 3 and 4 the device is only required to discharge against moderate pressure. Movement of piston 4 is by means of handle 17 as before, while its return movement is produced by spring 27 encircling rod 3 and having its two end coils seated in annular grooves 28 and 29 formed in body 1 and rod 3 respectively.

The fastenin at both ends provides a. resilient limit Ier the outward movement of the piston, and at the same time permits very easy assembly and separation of the parts. Two arms 30 are also provided at the upper end of the body 1 for convenience in manipulating handle 17. In this embodiment ball 22 bears on a seat formed directly in the body 1 at the end of cylinder 5.

For better mounting of reservoir 8 on the intake passage 7 of the pump body, there is illustrated a nipple joint with packing 31 co-operating with the threaded neck of passage 7. This construction also facilitates a tight closure of reservoir 8 when it is removed froin the pump body and covered by a threaded cap.

The operation is as in the previous embodiment when discharging under moderate pressure. Due to the long stroke and small section of piston, the discharge pressure will still be relatively high.

It'will be understood that leither embodiment will be employed in connection with a plurality of reservoirscontaining different materials, which reservoirs can be mou ted in succession on thecompressor as 'req' 1red to permit the use of the different mat ials, as algyive set forth. In using liquids such as iluidoil, gasoline, etc., the follower 9 can be omitted as indicated in Fig. 5, in which case the opening in cover 11 is preferabl closed by a threaded plug 32 provided witliv a longitudinal groove 33. The plug can be temporarily unscrewed to provide an air vent and thestop 34 revents loss of same.

Without furt er elaboration the foregoing will so fully explain thegist of the invention, that others may by applying current knowledge, readily a apt the saine for use under various conditions of service. It will for instance be observed that the lubricant reservoirs could be simple tubes of foil or yieldable material with closed bodies and threaded necks for engaging the bod In this connection the follower can a so be omitted and the tube will collapse under the suction of the pump. This and many other adaptations and modifications may readil be made by those skilled in the artfwithout eliminating certain features which may properly be said to constitute the essential items of novelty involved, which items are intended to be defined and secured by the following claims.

What I claim is:

1. A lubricant compressor comprising a pump bodly, a plunger therein, means normally gui ing said plunger in reciprocating movement, and additional means normall inoperative for guiding said plunger in helical movement, said additional means being positioned to be conveniently moved into operative position by one of the digits of the hand holding the body.

2. A lubricant compressor comprising a pump body, a plunger including a stemeccen tric threads carried by said stem, means for guiding the threaded part of said stem for straight reciprocating motion, and means for guiding the threaded part of said stein in helical movement, said means being positioned to be conveniently moved into operative osition by one of the digits of the hand holding the body.

3. A lubricant compressor com rising a pump body having a discharge en a check valve at said discharge en d, an inlet for said pump lying at an angle to the body and slanting away from the discharge end, a lubricant reservoir co-axial with said inlet and detachably mounted thereon, said reservoir serving to maintain lubricant therein at substantially atmospheric pressure, a plunger reciprocable inthe pump body, screw threads on said plunger, gui e means permitting sliding movement of said plunger without rotation, threaded means movable into and out of engagement with the threads of said plunger, and resilient means tending to move said threaded means into disengaged position.

In Witness whereof, I hereunto subscribe my name, this 23rd day of March, 1925.

EMILE PIQUEREZ.

Yes

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