US1754040A - Oil-circulating system - Google Patents

Description

pril 8, 1930. J. L. PERKINS ET AL OIL CIRCULATING SYSTEM Filed Sept. 2D, 192B m il ` INVENTORS v@ Wj TTORNEY.

Patented Apr. 8, 1930 UNITED STATES PATENTI oFFicE JULIAN L. PERKINS, OF WEST SPRINGFIELD, AND I'IIRAM D. CROFT, 0F SPRINGFIELD, MASSACHUSETTS, `.ASSIGJQ'CSJEE TO EERKINS MACHINE AND GEAR COMPANY, OF WEST SPRINGFIELD, MASSACHUSETTS, A CORFOBATION OF MASSACHUSETTS OIL-CIRCULATING SYSTEM Application filed September 2D, 1928. Serial No. 307,256.

Our invention relates to improvements in systems of or means for lubricating with lubricants, in a more or less fluid state, intermeshing driving and driven members of the spiral or similar type; and the `primary object of our invention is to provide a system of this character whereby the lubricating medium is circulated by the action of the driv ing spiral member when in motion, and applied in a most thorough manner to the interengaging parts `or teeth of both spiral members, and to the driving member shaft and its `main bearing, with the'result that uniform lubrication is obtained, undue friction and wear are obviated, great'eflciency is attained, and waste is prevented.

The system is simple and its application or installation in no way impairs the mechanism with which it is directly associated.

Other objects and advantages will appear in the course of the following description.

We attain the objects and secure the advantages of our invention by the means illustrated in the accompanying drawings, in which- Figure 1 is a top plan, in partial section, of transmission mechanism equipped with the oil-circulating system, illustrating a practical embodiment of the same, thefcover of the case being removed; Fig. 2, a fragmentary, sectional detail of certain of the parts and members; Fig. 3, a vertical section through said mechanism, taken on lines 3-3, looking in the direction of the associated arrow, in Fig. 1, and, Fig. 4, afront elevation of said mecha nism.

Similar reference characters designate similar parts throughout the several views.

The arrowsin Figs. 1 and 3 indicate the directions of the associated revolving` members when in action.

It is to be understood that the mechanism to which our system is here applied is merely typical of mechanisms to which said system may and is well adapted to be applied.

At 1 is represented a horizontal case which is provided ontop with a cover 2 secured in place by means of screws 4L. This case may be of any necessary length, dependinoon the character of the machine with which the system is employed, and here the right-hand end portion is broken off. The lubricant is placed in the case 1 to a depth suliicient to enable the same to be `circulated in the most eiiicient manner. 7

On the floor of the case 1, adjacent to but apart from the back side thereof, is an integral, horizontal bearing 5, and in the front side of said case is an integral, horizontal bearing 6, the axes of'these bearings being in the same straight line,- which line is at rightangles to the central, longitudinal, vertical plane of the case. The location of the bearing 5 inside ofthe case 1 is important, because of the completeness and thoroughness with which the same can be lubricated, as will hereinafter more clearly appear.

There is an integral, vertical bearing 7 in the floor of the casing 1, between the lefthand end of said casing and the vertical plane in which the axes of the bearings 5 and 6 are located, and the cover 2 is provided directly above saidV first-named bearing with an integral, vertical bearing 8.

A worm-wheel 9 has upper and under trunnions 10 and 11, respectively, through which and the hub (12) of said worm-wheel entends a shaft 18, the upper portion of said shaft being hexagonal in cross section, and pinned at lll to said upper trunnion. The trunnions 10 y `and 11 are respectively journaled in the bearings 8 and 7. A packingring 15 may be introduced between contiguous surfaces of the bearing 7 and the hub 12.

A worm 16 is mounted on a horizontal shaft 17, and partially inclosed in a cylindrical conduit or shell 18, within which shell at the front end of said worm is a cylindrical bearing block 19. The worm 16 has at the rear end a hub 2O that is pinned at 21 to the shaft 17. The shaft 17 projects beyond the rear end of the hub 20 into the bearing 5, wherein this projecting part of said shaft is journaled. The forward terminal of the sha-ft 17 is journaled in the block 19, and prot-rudes from the front end of said block to receive thereon and have secured thereto the direct driving member, which may be a pulley, as 22. The forward terminal of the shaft 18 is received in the bearing 6, and a pin 23 passing down through the left-hand side of said bearing and engaging portions of the shell 8 and the block 19, as best shown in the first view, securely holds said shell in place in said bearing and said block in place in said shell.`

The block 19 extends from the frontend of the Worm 16 vto the inner face of the hub of .the pulley .'22, and the shell 18 extends from the rear end of .said Worm to Vthe front end of said block. A portion of 'the left-hand side of the shell 18 is cut away, asxrepresented at 24, to permit the Worm and Worm-Wheel teeth to intermesh. Y

The shaft 17, and With itv the Worm 16, is held against endvvise movement by Ithe bearing 5, the rigidly held block 19, andthe pullley 22, the hub, as 25, of said vpulley being pinned, as at 26 to said shaft adjacent to the outer end thereof.

vPower applied to the `pulley 22 causes the shaft 17 and thevvorm 16 to revolve, land the latter-causes the worm-Wheel 1.9 and the shaft 13 to revolve.

YWithin the block 19, a short distance in from the front end thereof, is a groove 27 encircling the shaft 17 landopen-ing into the bore in said block for said shaft, and also Within said block and `leading down from the bottom of said groove and 'then rearwardly to *the inner end of the block is a passage 28-see Fig. 2. The bottom fof the passage 28 `'is formed by the shell 18. Absorbent material in the form of -a ring 29 encircles the shaft 17 in the groove 27. An oblique passage on a horizontal plane, as a' whole'indicated by the numeral 30` `extends from the 'bore yin the Vbloeflr 19 forlfthe shaft 17 4'through said block,

the shell 18, and the innerpart'ofthe bearing The passage '30 opens `atene end and into the shaft bore inthe blocl 19,a-t a point between the Worm .16 and the packing-ring 29, and at the other end into the casing Vil at a point adjacent to the intermeshing Worm and worm-Wheel teeth. ,n

When the worm 16 is in motion a certain amount of suction is created thereby, or it acts as a spiral conveyer, and thereby causes the lubricant to be drawn through the passage 30 to the shaft 17, Where said lubricant coats .the portion of said shaft Which -is in the block 19 and the sides ofthe bore therein for said shaft in a most thorough andcomplete manner,to saturate the ring 29, to move down into the `passage 28 and rearwardly in said last-named passage and inside of the shell 18 `onto the worm teeth, which teeth, be it noted, run in Contact With said shell, Vand onto the worm-Wheel teeth Where and cas they Vare `contacted With by said Worm teeth, and finally to passout of the rear or inner `end of the shell back into the case 1. The movement of the lubricant is not, `of course, divid- 4ed irnto cycles, as might possibly lbe inferred Icertain-1y is more Ilfively and speedy. The lcharacter of the mechanism and the nature and consistency of the lubricant are the factors Whi-chdetermine whether or not ring "29 shall used.

Due Ito the exposure on three, and evenV four, iff'fthelevel of the lubricarrtbe mbevetlie 15,

top of the bearing 5, sides-of said bearing-to said lubricant, the bore in said Ibearing ifo'r the Vshaft 17, andthe pai-Tt of said shaft in said bore, are thoroughly and completely Vlubricated fat all times. IJdbricant from ithe case 1 can enterthe bearing 5 'atfeither end, work through thesaine, and leave fat the other end, returning jte the mass fin the case. vTo facilitate the entrance of the lubricant to the 4interior ofthe bearing, sin-opening 81 may y be made in the top of said bearing. f Y

The term oil fas herein used is intended to coverand include any lubricant for lubricating material capable of being utilized with our system; l i l VMore or 'ess fdiange, im addition to rt'he hereinbefefre specifical'lypointediout, may be made in -our system, 'without departing from the spirit :of onrinventimi, scope of what is claimed.

Wefclazim. 1. ln an veil-"circuln-ting system, a container or exceeding the Vfor lubricant, FaV member supported by said container, a conduit leading from said member, aa shaft 'with ione tenminal 1journaled inzsaid member, the fatter having therein `passages openinginto the shaftvpassage `'and into :saidlcontainer 'and Asaid conduit, `a spiral driving mem-ber mountedwon and secured to said shaft Within said conduit, and a driven member intermeshing with said driving member. V l

V2. [n an oil-circulating system, .aicontaxiner for lubricant, a :bearingmember supported by said container, a conduit leading fram said member, a shaft with one terminal journaled in said member, fthe latter :having therein an annular groove opening into the 'shaft passage, and passages opening into said groeve, and into said container and said conduit, a spiral driving member mounted on and se cured to said shaft Within said conduit, and va driven member interlneshing with ysaid driving member.

3. lnanoil-circulaltimg system, aconstniner for lubricant, a bearing member supported by said container, a conduit leading from said member, a shaft with one terminal journaled in said member, the latter having therein an annular groove opening into the shaft passage, and passages opening into said groove and into said container and said conduit, absorbent material in said groove, a spiral driving member mounted on and secured to said shaft Within said conduit, and a driven member intermeshing with said driving member.

4. An oil-circulating system comprising a container for lubricant, intermeshing driving and driven spiral members in said container, said driving member being mounted on and secured to a shaft that is journaled in a bearing in which are passages leading from the outside o-f said container to the shaft passage, and from said shaft passage to the outside of said bearing member, and a conduitaround said driving member and into Which one of said first-named passages opens, whereby the action of said driving member, when in motion, causes the lubricant to pass into said bearing member to said shaft, and to pass out of said bearing member and through and out of said conduit back into said container.

5. In an oil-circnlating system, a case, for lubricant, provided With bearings, a shell eX- tending into one of said bearings, a bearing block and a Worm in said shell, means to secure said shell and block to said case, a shaft, for said Worm, journaled in the other of said bearings and in said block, the latter having passages therein, one of which passages leads from the interior of said oase to the shaft bore in said block, and the other leads from said bore to said shell, and a Worm-Wheel intermeshing With said Worm.

6. In an oil-circulating system, a oase, for

lubricant, provided With bearings, a shell extending into one of said bearings, a bearing block and a Worm in said shell, means to `secure said shell and block `to said ease, a shaft, for said Worm, journaled in the other of said bearings and in said block, the latter having therein an annular groove opening into the shaft passage, and passages opening into said groove and into said case at two points, one of Which points is through said conduit, and a Worm-Wheel intermeshing With said Worm.

7. In an oil-circulating system, a oase, for lubricant, provided With bearings, a shell extending into one of said bearings, a bearing block and a Worm in said shell, means to secure said shell and block in said case, a shaft, for said Worm, journaled in the other of said bearings` and in said block, the latter having an annular groove which opens into the bore therein for said shaft, and passages one leading from the interior of said case to said groove, and the other leading from said groove to said shell, absorbent material in said groove, and a Worm-wheel intermeshing With said Worm.

8. In an oil-circulating system, a ease, for lubricant, provided with bearings, a shell extending into one of said bearings, a bearing block and a Worm in said shell, means to secure said shell and block to said case, a shaft, for said vvorm, journaled in the other of said bearings and in said block, the latter having passages therein, one of which passages leads from the interior of said case to the shaft bore in said block, and the other leads from said bore to said shell, and a Worm-Wheel intermeshing With said Worm, said shell having an opening therein adjacent to the inter-engaging portions of the Worm and Worm- Wheel teeth.

JULIAN L. PERKINS. HIRAM D. CRGFT.

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