US675860A - Motor. - Google Patents

Description

No. 675,860. Patented lune 4, |90l. A. LEVEDAHL.

IUTDR.

(Application Med Hay 3, 1900.)

3 Shaea-Shoet I.

(no new.)

No. 675,860. Patented lune 4, |90I.

v A. LEVEDAHL. y

HUTOR.

(Applicltion lod lay 3, 1900.)

(No Mode.)

3 Sheets-Sheet 2.

QU i l 30V Y UNLV- No. 675,860. Patented lune 4, I90I.

A. LEVEDAHL. i

HDTOR.

(Application flled May 3, 1900.)

3 Sheets-Sheet 3.

w man lll HIHIIHIIIHH IIIIIHIIIlllIlI i f W i; F :l L A [hij Y G i A j i I j? 9 rrrrr am UNITED STATES PATENT OFFICE.

AXEL LEVEDAIIL, OF CHICA-GO, ILLINOIS, ASSIGNOR TO THE AURORA AUTOMATIC MACHINERY COMPANY, OF AURORA, ILLINOIS.

lMOTOR.

SPECIFICATION formingpart of wLetters Patent` No. 675,860, elated June 4, 1901.

Application tiled May 3,1900. Serial No. v15,326. (No model.)

lie it known that I, AXEL LEVEDAIIL, of Chicago, in the county of Cook and State of Illinois, have invented certain newand useful Improvements in Motors; and I do hereby declarc that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings, and tothe letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in valve-actuating mechanism for-.motors or engines of that class operated by an elastic fluid under pressure. The invention consists in the matters hereinafter described, and more fully pointed out in the appended claims.

My invention is herein shown with a portable pneumatic motor employed for actuating a drill or like purpose and in which motion is given t-o a rotative shaft by means of a plurality of cylinders containing reciprocating pistons and in which slide-valves are employed to control the admission of the iluid to the cylinders. y

The invention will be more readily understood by reference totheaccompanyingdrawings, wherein- Figure l is a view in side elevation of a' portable motor embodying my invention. Fig. 2

is a detail sectional view thereof taken axi.

ally through two of the power-cylinders of the motor and through the slide-valve, by which the admission of steam to said cylinders is controlled. Fig. 3 is a detail section, considerably enlarged, taken through the crank-shaft of the engine and illustrating the devices by which the slide-valve is actuated. Fig. 4- is a detail sectional vicw taken on line 4 4 of Fig. 3. Fig. 5 is a section similar to Fig. 3, illustrating a changed position of the parts. Fig. (I is a detailsection taken online o t; of Fig. 5. Figs. 7 and S are detail views of the eccentric shown in Figs. 3 to (5, taken on lines 7 7 and 8 S, respectively, ofsaid Fig. :3. Fig. 9 is an exterior view of a part of the casing of the engine with parts broken away to show the interior construction, illustrating in modified form the devices by which the eccentric is operated. Fig. 9 is a detail section taken on line Sla 9 of Fig. t'. Fig. 10 is a view of the crankshaft with eccentric thereon, illustrating a modified construction in devices for actuating the said eccentric. Fig. l1 is a detail section of the crankshaft shown in Fig. 10,taken through the eccentrics there on, showing devices for operating said eccelr trics. Fig. 12 is a detail section taken on liuc 12 12 of Fig. l1.

The motor illustrated is generally similar in itsmain features to the motor illustrated in Patent No. (330,357, granted to ll. J. Kimu man August 8, 189i).

As shown in the said drawings, A indicates the main casing of the motor, which is of sector shape and provided at one end with a head A and at its opposite end with a head A?. The motor is provided with four cylinders, which are cast integral with the casing and two ot" which are shown in the drawings and marked Il and ISC baid cylinders are arranged in two pairs, with the cylinders of each pair parallel with eachother aud at right angles to the cylinders of the other pair. C in dica'tes a crank-shaft which is provided'with two cranks. The cylinders contain pistons D D, which are connected with the crankshaft by means of pitmen (l d. The pitmen belonging to two of the cylinders are connected with the crank-pinvof one ofthe cranks, and the pitmen of the other two cylinders are connected with the crank-pin of the other crank. The head A/ of the casing is provided with two integral valve-castings, which are interiorly of cylindric form and are arranged with their central axis parallel with those of the pairs of cylinders with which they are associated. Oneofthesevalvc-casingsisshown in the drawings and is marked l. The val vecasing E contains a piston-valve F, adapted to slide end wise in the valve-casing and which, through suitable ports or passages in the valve #casing andv motorcasing, affords a proper supply ot steam to and permits the eX- haust of steam from the cylinders I3 l. The details of construction with regard to these parts are not illust-rated, the same havingno bearing on the present invention.

Mounted on the crank-shaft C, at its end adjacent to the piston-valve, is an eccentric G, through which the said valves are given endwise reciprocatory motion. Eccentric-rods II II are employed te transmit motion from said eccentric to the two piston-valves, said eccentric-rod being pivoted to the valves and provided with eccentric-straps .71, h', which are arranged side by side upon the eccentric G.

Aindicates a shaft which is driven from the crank-shaft C and which is adapted to receive a drill l' or other rotative tool.

J indicates a tube which is attached to one side of the casing A, and K indicates a rod yattached to the casing A opposite and in alineinent with the tube J. The tube J and the rod K constitute handles by which the motor may be held and manipulated when in use. A flexible siipply-pipe is connected with thc tube J, whereby the compressed fluid is snpplied to the motor. I.- indicates a t'hird handle, which is attached to. the head A and which may ne used in connection with the tube J or rod K in manipulating the tool which is driven by the motor.

So far as described the motor illustrated is like similar motors heretofore used.

Now referring to the novel features constitutng my invention, these are constructed generally as follows: The eccentric G instead of being rigidly secured to the crankshaft is pivotally connected therewith, so that it may be shifted thereon in a plane perpendicular' to the central axis of the crank-shaft and is so arranged that when shifted from one limit to the other of its movement its greatest cccentricity will be thrown from one side tothe other of the shaft with the effect of reversing the direction of the motion ci the engine, and 'F t 'accd in its central position it-will be concutric with the shaft, will give no motion to Ahe slide-valve, and will entirely cut off the supply ot' conepressed fluid to the cylinders. In connection with the shifting eccentric thus arranged I provide an operative connection between said cccentrics and one of the handes of the motor, by which the said eccentric may be moved or shifted to reverse the motor or stop the same by movement ot' one' et the hands o? the operator while still grasping the handle to which the operatingr device entends.

Now referring to the details of construction in the shifting eccentric and actuating devices therefor ilhistratcd in Figs. l to 8, these parte are constructed as follows: The

ecc f mounted on a pivot-pin G, wh fed parallel with the cranksha d suitably supported at its ends on said crank-sluit` VIn the particular construction illustrated, 4Tige. 3 and 4, the said pivotpin G is engaged at one end with an adjacent crank-arm c' of the crank-shaft and at its opposite end, or`Y that adjacent to the head A', with a flange on a sleeve M, which sleeve surrounds and is attached at the outer part of the crankshaft, As herein shown, this end ot the crank-shaft is provided with a collar lll', which surrounds the sleeve M and engages a bearing-ring A3, secured hyscrewthreads in an opening of the head A'. Said collar M' provided w`th a flange m', which bears against the ring A3 to hold the shaft from endwise movement. The eccentric G is provided with a segmental slot or opening` through which the crank-shaft passes and which is arranged, concentrically with the pivot-pin G', so to admit frceanoveuteiz et the eccentric on the said pivot-pin` to an cx tent required for reversing the engirn' thc motion 0f the eccentric being limited hy contact with the shaft at either limitof its throw. To provide means for actuating or movin g the shifting eccentric from the exterior of the motor-casing, I provide, as shown in l to 8, devices as follows: The end ot' the crankshaft on which the said eccentric as mounted is made hollow or tubular, and in the saine is mounted an endwise-sliding ao tuating-rod N, which projects outwardly from the end of the saidI crank-shaft. The said actuating-rod is provided at its inner end with a swiveled head N', which is free to rotate while the actuatingrod Nels held .Frein rotation, but which at the same time is ren-- gaged with said rod N, so as to be mow nl wise therewith. The sw'vel connectent tween the head N and the rod N, rf; he shown, consists of a stein n on the h. which enters a sockctin the rofl and is provid near its inner end with an attaclni a I n', herein shown as secured thereto by nn of a pin n2. in the actuatingrod N is a ring nl, wh inserted inthe socket and secured therein 2 any suitable means and the inner which forms a' shoulder adapted to vbe., against the adjacent end of the sleeve n', iinf@ thereby hold the stein from outra/:rrd ment, the stein being held from inw"x df ment by contact of its inner end w ia bearing-surface at the inner end of the 'streitet In the said head N' is secured a radallywni ranged stud M2, which projects outwardly' through a longitudinal slot formed, in the 1 tubular crank-shaftarnd pro, oeyord an oblique or cam slot g, torino surface of the eccentric G, f' 7. By reason of the engagement N2 with the slot c' of the cranh'sh will always turn or rotate with shaft. The stud N2 is arranged respect to the pivotalaxis of the centric, and the cainfslot g is loca inner face of the segmental opening n eccentric, so that the outer end of ih stud will reinain constantly in posi engagement with said cam-slot 5;. it ,f

actuating-rod N is moved longitrn stud N2 will be carried along or time.: slot c'in a direction endwise of the i by engagement with the oblique or c .m g will swing or oscillate the eccentric in c direction or the other, according to the d?. tion in which the actuating-rod is mover; Figs. 3 and4 show the actnatinguml at the in engine.

The ietwat t iiliiiiiijz ier and nim eil "oinyliah the f1 "i constitute tin; www ,ntwardlj i el' the ileoentrie.

A i uetratr-d, how andlieihyiiet i the teni @Rari-i menne For a f either hand iff the operator from thehai of the machine. lior this por shown in ifi Y, l to 8 devireeiw miroir. handle Il, win i is mounted en the Fir-:f4 0f the 1notor,ii-; pivotally oennrifimi with by means of a pivoestud L', al rotative movement of the handle and passes through and engages a oylinflre or tnbnlarsleei'o Il?, forming part el the im In said sleeve ie formed an oblique or inclined groove i, in which reste a ring: i), ha"- ingr attac-,hed to it an arm O', which is rigid to and engages the actuating-rod N. A5 herein shown, the outer end of said rod N is provided with a transverse slot nl, and the arm O is provided at its end with a head o, which enters and engages the imposite Walls of the slot. Obviously the arm O' is held from sidewise movement by engagement at its outer end with the actuating-rod N, so that when the handle L is rotated the ring() will be held from turning, so that by the shifting of the position of the inclined groove!l the outer ond ol' the arm O will he moved to-y ward or from the easing, and the actuatingrod N thereby operated.

In the use of the motor thns consti-noted the motor will he supported by the operator grasping withone hand either the tubo .I or handle K and with the other hand the handle L. By turning or rotating said handle L he maystop, start, or reverse the motion or change the speed of the engine as desired.

In Figs. i) and 9' I have shown a construetion by which the actuating-rod N for the eeA centric may be operated from one of the lateral handles J or K of the motor. As shown in said Figs. 9 and il, a lever l is pivot-ed to the engine-easing by means of ft lug p thereon or otherwise. One arm Pof said lever extends to and engages the aotuating-rod fil " i ia riuniti in sue/h man ner as togivo endwise movement to the red when the lever is operated. The other arm l"2 ol' the lever P is at right angles to the arm P' and entends to the tube .iata point near the motorrasing. On said tube .i mounted a. rotative sleeve Q, which provided at, its opposite with Garnele?Q i; q. The attirent extremity of the leverarm IJ is forli .l and the arms of the fori; are provided with in.vardlyextending stede up" ji', adapted to engage the eauuslot i7, The

.alot-.ve (j is made ei' auch iengzth that it 'may he grasped hy the hand ot the operator and is preforahly ovideil with a rough snrfaoe, afi hown. `iivionely a partial rotation o? the Sleeve Q in either direction will, through the medi z or" the cani-Slot l! and luv; give mmeinent o the aetnatingwod N inimrt'ilj, or niv-virili; with a result oi? ahiil ing; the ij-i'eentrie in the manner ybefore dese ri hed.

. in, r1, 'ice for hitting t inie'ivhat from. ioni; iiegizrer:

and li I have Shown a de- `.he eccentric whit-h dii' i ilinatrated in tl if l inwind onlinr l nifl of the hive-#pi n s? of an eeeent-rie 1. S' indicate tivo trie-straps which Surround the Said in one Side-of theerfnil;` allait it is. ioifnied a longitudinali groeve r", in, which is platre-fi an enilwiseslidinn rod ii', -which extends; within the shifting eneentrit: nud is provii'led with a radial stud r2, adapted to engage :t ennrnroiive a", ii lie the L'mngroove g hereinheiorr described. 'Vlie outer end o' the siding rod il" i ftred 1.o a grooved colY lar R, Whieh is engaged by the forked end of a. shifting leva r R, It will he 1obvious that hy movement et' the lever I?? and ef the eollar R2 the eccentric may he operated in the same manner and with the name resulte as hereinbefore stated.

I claim aa my invention- 1. A compressed-fluid motor provided with a closed easing and comprising a cylinder, a piston, a slide-valve, a rotative shaft actuated by the piston, an eccentric mounted on the shaft operating said slide-valve, said eccentric. being movably connected with the shaft in sneh manner that when at the central part of its movement it will be concentric with the Shaft, and means for operating said eoeentrie contained within said shaft extendA ing longitudinally through said Shaft to without Said casing.

2. A portable motor provided with a handle or handles, said motor Comprising a Cylinder, a piston, a Slide-valve, a rotative shaft aetnated by said piston and provided with a shifting eccentric for operating said slide-valve, and means for operating;l said shifting eeeentrio extendingI from the Same Ato the handle on the motor, whereby the said eccentric may he operated hy the same hand which graspa said handle.

8. A portaiide motor Conipiining a (basing having n inofnhle handle, n. ejy'linder, .1i ,ois i Lon7 o. slide-valve, a shifting; eroentrio for operating anni valve, :nifl inemn :or operating seid eccentric extending lo sind operated by said movable handle.

fl. A poiylz'tlilo motor comprising a eloseil e. ng, n *oylinileig :t piston, n slide-valve, n rotative shaft actuated h v the piston nml pro vidi-.fl ,vih rm e-feentrio for actuating the volvo, loc-ated in the easing o. handle inovahly mounted on said Casino", and means for opern ming said shifting; ecoentrie, extenning from Sold eccentric through the easing; :ind oonneete with the said movable handle.

5. The'oombination wiih n rotative Shaft, of nn eccentric pivoted on the shaft 'oy means os". pivot-pin arranged pa rnllel. with the shaft- :ixis, 'mid eccentric being provided. with an opening; of segmental form concentric with the Sninl pivot-pin through whioh the shhft passes, inerme for actuating ,eaifl eooontrio comprising Stud arrzingeil rnlinllv with respeot lo mid pivot-pin nml secured at its inner enfl io a. rod within Seial main Shaft hav img* longitnriinnl inovenniint ti'ierein, and n @zuil-groove in the face of he Seginental open-I ingr in the eoeentrie :ulnplefl for engegeinen with ihe outer end of Airl radial sind. l. The combination with a rotative Shaft; of :m Q-,eenirio thereon, will eeifentrio heing razioni-@led wiih the slit-ift hy a pivot-pin .firrenngeil parallel with the shaft-axis, and being provided with an opening of segmental form for rho passage ol' che shaft, of an endiviseeiilinrf, actuating-rod inonnteil @oneentrieally within seid shalt, and provided with :i sind projecting radially through :in opening in said shaft, a oanrgroovo in the inner fir-ee of the eccentric opening adapted to be engaged by Said sind, and o non-rotative part hnvi ng eno. wise movement with, respect to the Shaft and Connected with sold actuating-rod, whereby longitudinal movement maybe gi von to the hitter,

arnese eooentric pivoted tothe shaft so as to be shifted thereon, and provided with an aperture lhrongh which the shaftpasses, nn endwisemovable notuaiingmod contained Within the' Shaft, said rod having a non-rotntive head Swivele'fl thereto, :i stud in snif: head passing radially through the .longitudinal slof;- in the shaft, the face of Seid oooentrie opening being; provided with n @im Igroove to receive the said stud.

S. A. pormhle motor comprising; n closedV casing, a handle plv telly mounted thereon, zieylinder, a piston, n rotative Shaft actuated byeaid piston@ehiftingeoeentrieontheeheft, an endWise-movnhle rod extending onneie of tho easing having operative oonneoion with the eeeentric, sind n lever connecting said rod wit nthe handle, said handle being provided Wit a groove arranged ohlionei to ite axis oi' rotazion, and the lever hovii'ig n rigidly- :ittnohed ring which engages sold groove.

9. A. portable motor comprising :L closed easing, :t cylinder, a piston, :L slidewalve, n rotative shaft actuated by said piston, a shiftin" eccentric on the shaft irovidecl with an AXEL LEVEDAUL. iimessesz (uns, E. EniKSoN, Jonin L BERKEL.

.i The Combination with a rotativothollow, 45 f longtndinally-slottefl shaft', of a piston, an

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