US1127065A - Mechanical movement. - Google Patents

Description

C. A. MILNE.

MECHANICAL MOVEMENT.

APPLICATION FILED NOV. 6, 1913..

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MECHANICAL MOVEMENT.

APPLIGATION FILED NOV. 6, 1913v LIZ'LOfiS,

Patented Feb. 2, 1915.

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My M m M mm n m V M MW fl 3 0 as ea cEAnLEs A. 'MILNE, or DETROIT, 'Mic Iemu, assrsnon T0 TRUMAN PABSHALL, or

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mec anical; Moymunun Memes.

To-aZZ whom it maycaacem; i

Be it known that I, CHARLns A. MILNE, a citizen of the United States, residing at Detroit, in the county of lNayne,'.State of Michigan,

Movements; and

skilled in the art towhich it appertains to make and use the same, reference being had to the accompaniyng drawings, and to the characters of reference marked thereon, which form a part of this-specification.

This invention relates to a mechanical movement and consists in the construction and arrangement of parts hereinafter more fully set forth and pointed out particularly in the claim.

v The object of the invention is to provide simple and efficient means for converting and transmitting rotary into-reciprocating motion. the mechanism being "especially adaptcdfor use in connection with reciprocating pumps or air compressors, the driving mechanism is required to be confined within a small and compact area, and in which it is desirable to actuate a multiple of reciprocal plungers from acommon center through the rotary movement of, a Idriving shaft, in suchmanner as. to afford di rect contact between the driving parts so as to minimize the number of moving parts, to reduce friction and to attain a high eficiency ofthepower applied.

The above ob ect, sattained by the em-' ployment of the construction and the ar- 1 rangement of parts as illustrated in the accompanying drawings m wehichz- Figurel is a central longitudinal section through the mechanism as applied to an or- I dinary multiple cylinder air compressor the shafts and piston rods being shown in taken on dotted'line 2-2 of Fig-1. Fig. 3

disk for transmitting 'movement to the elevation. Fig. 2 is a transverse sectional view through the partsand containing case is an elevation of the detached oscillatory pistons. I i 0 v Referring to the drawings by the-charae ters of reference marked thereon l and 2' designate the parts of the containing case or cylinder members, each of which is listed Application. filed. Novenilger 6,, 11951.31 S eri-a1 We. 199,436.

have invented certain new and useful Improvements in Mechanical I do declare the following to be a full, clear, and exact description of the invention, such as will enable others wherein Specification of Li-ates mm; d Patented Fehfi, 1935 te form a plurality of diametrically opposed cylinders 3 therein, said members at A I 0 v their inner ends being provided with flanges a through which bolts 5, withnuts 6, are

passed-t0 couple said parts together, thecylinder members being so joined as to dispose the cylinders therein in axial alinement with each other.

heads 8 secured thereto by bolts 9 through the flanges thereof. The concaved head at.

I The outer ends of the cylinder members 1 and 2 are closed by integral I V heads 7 which are surmounted by concaved concaved head of the cylinder member 1 is locked in contact with the end'of a stem 12 projecting. from the head of said cylinder 1 by means of a bolt 13 threaded therein and carrving a jam nut 14: in engagement with said head. The space between said cvlinder heads and concaved heads forms compression' chambers which communicate with the cylindersthroughthe ports 15.

The construction and arrangement of the 7 cylinder members as described is common m air compressors and is not essential to the operation of the mechanism shown herein for transmitting and imparting a reciprocal motion to one member through therotarv movement of another, as thismechanism is adaptable -for various other uses, but is shown in connection with an air compressor to better illustrate its operation.

Journaled concentrically within the con tral portion of the cylinder member 2 to rotate in the. bearing 16 formed therein. is a drive shaft 17, and mounted upon the end of I said shaft, and lying concentrically within and betweenv the cylinder members 1 and 2,

is an enlarged circular head 18 having an o liiiue face which extends across the plane of the axis of the shaft at an angle thereto, forming a cam face 19,'and projecting at rightangle from said cam face concentric therewith is a hub 20, and lying concentric with and freely receiving said hub, is'an annular washer or ring 21 'carrvinga multiple of steel balls 22 extending transversely through the body at intervals through the circumference thereof, in the form of a ball thrust bearing.

Mounted m: each of the cylinders. 3'is a cally of said piston rods and in opposed reother are cylindrical apertures 26. l

piston 23, and connected rigidly to each op posed pair of pistons is a piston frod 24.11am ing an enlarged body portion or head 25 formed thereon midway the length thereof.

Extending centrally in said headsdia'metrilation to each v Mounted in a bearing 27 formed centrally in the cylinder member 1, and extending therein in axial alinement with the rotatable shaft 17, is a stub shaft 28, the inner end of which is reduced and terminates in the form r 'of a 'ball 29. The opposite end ofsaid stub through the rotation of'said. bolt, said shaft may beadjusted longitudinally of its bear shaft abuts against the inner end of the bolt 13 threaded into the stem 12 at the opposite end of the shaft bearing 27, whereby,

ing, said bolt being locked a gainst' rotation by the jam nut l4 thereon.'.

As a means for impartinga reciprocating movement to the piston rods and their pistons through the rotary motion of, the shaft" 17, an'oscillatory disk 30 His interposed between the thrust ball' bearing, ring of the cam face19 and the ball 29 ofthe'stub shaft 28. Said oscillatory disk is provided upon ,one side with a centralc'onca-vity 31 which forms a socket for the reception 'oftheball' 29 of the shaft 28, whereby a central piv-,

- otal contact is formed between said disk and shaft. The oppositeface of said disk is provided with a flat surface for engagement-{ with the balls forming la thrust bearing with the face 'of the cam. The periphery ofthe oscillatory disk is provided withintegral extensions carrying'balls '32 upon diametrically opposite sides thereof -(see Fiig. 3 the diameter" of said balls being su I ciently less than the diameter of the cylindrical apertures 26 ofthe piston rods 24 to enable said balls to lie freely withinf said apertures in coiitactwith and in a manner' to permit of a slight rotary as well as sliding contact with thelwalls thereof, as clearly shown in Figs. '1 aid '2.

- ."By this arrangement, theflat face of theoscillatorydisk being held in contactwith the cam face of the rotary shaft through the-[central pivotal con-tact of its opposlte .face with the ball of the stub shaft, saiddisk will be caused atyall timestolie in ayline with theplane of the cam face of the rotary to said disk as the position of the cam face and through/the pivotal contactof the-pis changes or reverses with respect to a. rightangle: plane with the axis about whichit ro-' tates, thus actuating said disk in sequential progression throughout its circumference,

ton rods with the iball extensions on said it disk, said piston rods will be alternately reciprocated in theiropposed cylinders, as a shaft, and as said shaft-is rotated a rocking or oscillating movement will be imparted indicated by dotted lines or other substance compressed by the movein Fig. 1, the air ment of the pistons passing through the -.charged into the compression chambers.

through the interposed bearing ring will be caused to travel in a direction diametrically across saidcam face,while at the-same time ports in the heads of the cylindersis disf "-It will be observed that as the disk rocks or oscillates upon its pivotal center,.t he face of the disk in contact with the cam face said cam face is rotating about the center or ax s of Sald;dlSk, thus producing a surface movement'in'two directions between the meeting parts, and the pressure exerted upon the opposed. faces of the cam and disk being carried by the. rolling contact of the interposed steel balls permits this double movement with :but slight frictional resistance or wear pon the bearing surface, while the endthrust exerted upon the cam shaft is carried by a ballthrust bearin ring 33 in terposed between the forwar end of the shaft bearing 10.and the shoulder of the head 18 of the'cam. It will thus be seen that a ball contact bearing is formed between all of the moving parts of the mechanism sub- ,jected to direct strain and wear, thatsuch 4 moving parts arecomparative y few in number and simple in their construction, and.

that the application ofpower to the rotary shaft will be directly transmittedto impart an alternating or reciprocating movement 0' or. more reciprocal members.

causing a continuous oscillation of the pivotal disk n. sequential progress on c rcum-l ment 'of the parts being so disposed as to enable an adjustment to compensate for wear, in practically all of the contact or rior of the case by means of: the adjusting bolt as beforedescribed, thus renderingaccessibility' to the interior ofthe case unnecessa'ry" for the purposeof keeping the parts in close working order.

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ecause of the action of-the cam face in Wearing points, to be effected through the adjustment ofthe stub shaft from the exte I l Having thus fully set forth my invention,-

what I claim as new, and desire to secure by Letters'Patent, is v v A mechanical movement comprising aretaining-case, a revoluble. shaft journaled in said case, reciprocal rods mounted in said case, each rod 'having an aperture formed diametrically therein, a pivotal shaft ferentially thereof, a large numbertof pis-' I tons may be arranged-about said disk and mounted in said case in axial alinement with said revoluble shaft and adapted for adjustment longitudinally, a head on said 'revoluble shaft having a face cam thereon,

an oscillatory disk pivoted centrally upon said pivot shaft and having peripheral extensions upon opposite sides thereof engagof said oscillatory disk and the face of the cam of said revoluble shaft.

In testimony whereof, I sign this specification in the presence of two'witnesses.

CHARLES A. M'ILNE. .Witnesses:

B. F. WHEELER,- M. E. BROESAMILE.

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