US421523A

US421523A - Reversing mechanism

Info

Publication number: US421523A
Authority: US
Publication date: 1890-02-18
Anticipated expiration: 1907-02-18

Description

2 Sheets-Sheet 1.

(NO Model.)

R. SCHEIDLBR. RBVERSING MBGHANISM.

No. 421,523. Y. Patented Feb. 18, 1890..

WTNESSES.

ATTORNEY.

(No Modem R. SCHBIDLER REVERSING MBGHANISM.

` Y2 sheets-sheet 2.,

' No. 421523. 4lmentga Fehn, 18.90.

' H/'ITNESSES- mmm-WIL UNITED STATES" ,PATEN T Y OFFICE;

nEixnAnD senniniinn; onfxEiv-Ann, eine.A y

REVERSING M i-:CHAAN ISM.

SPECIFICATION forming part of Letters Patent'No. 421,523, dated February 18, 1890.

I Application tiled Scptemberv, 1889-. Serial No. 322,894. (No model.)

To all whom it may con-cern.'

lle it known that I, REIXHARD SCHEIDLER, of Newark, in the countyof Liekingand State of Ohio, have invented certain new and usey 5 ful Improvements in Reversing Mechanism;

and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same. l

My invention relates to limprovements in reversing mechanism designed more especially for traction-engines; and it consists in certain features of construction and combination f parts hereinafter described, and' pointed out in the claims. A

ln the accompanyingdrawngs, a viewin perspective. Fig. is aplan, partly in section. Figs. 3 and 4 are plan and elevation in detail, respectively, of sleeves D and E, the former being in section. Fig.`5 is a plan in detail of steady-pin C. Fic. G is a side elevation of the eccentric-arm B. Fig. 7 is an elevation in section on line .r Jv, Fig. Fig. S is a side elevation of the reversing-lever. Figs.. 9 and 10 are details, respectively, of

collar ll and stud e;

A represents the crank-shaft of the engine, having mounted thereon crank-disk A', the latter being provided with wrist a., these members being of ordinary construction. 0n wrist ais rigidlymounted the eccentric-arm ll, the latter extending past the line of shaft A. 'lo arm B is attached steady-pin C, the axis of this pin and the axis of shaft A being coincident. 'lhe hole in arm l. for receiving the steady-pin and the engaging sect-ion of the latter are preferably slightlyconical, the steady-pin having a nut C for drawing the pin home to its seat in the arm. lleforc tightening nut C' the steady-pin may bc turned on its axisin adjusting the parts. The steady-pin is rigidly held to its seat bytightening the nut against the arm, and akcy, pin, or spline. may be added, if necessary, to prevent'the steady-pin from turning in the arm. For turningthe steady-pin previous to fastening it, the cud of the pin at C2 is square `or otherwise prepared for receiving awrench or other appliance for turning the pin on its axis; On pin C is mounted the inner sleeve D, this sleeve having an easy fit, so that the Figure 1 is sleeve may be easily moved endwisc on the pin. Pin C has a lateral hole c, in which 1s driven key c', the protruding ends of this key 55 operating in longitudinal slots D' of sleeve D, by which arrangement of parts the sleeve is held from turning on the stcady-pimbutmay reciprocate cndwise thereon. o Sleeve D is provided with collar d, usually integral with the sleeve, the latter being also provided with a cap-nut d', by means of which latter dirt and dustare excluded from the cavity of the sleeve. Between the collar and nut operates a loose collar or band Il. The latter is omitted in Fig. 1, so as to` show the other members more clearly, collar lI lbeing shown in position in Fig. and i-n detail in Fig. 9.

Eis an outer sleeve mounted with an easy fit on sleeve D, so that the inner sleeve may reciprocate endwise in the outer sleeve and the outer sleeve may turn on' its axis around the inner sleeve. Sleeve E is integral or rigidlyconneeted with the eccentric E', the latter beingprovided with eccentric-strap F and eccentric-rod f, of ordinary construction, for transmitting the throw of the eccentric to the valve of the engine. Sleeve E is journaled in and held from moving endwise by box G, the box being supported by bracket-arm G', connected, preferably, with the bed-plate' (not shown) of the engine. Sleeve E has a' spiral or diagonal groove E2, in which operatesblock d'2, the latter, by means of'studs (1.3, being fastened to sleeve D, the latter having preferably a. depressed seat for receiving the block, whereby the latter is held more firmly in contact with sleeve D.' With such arrangement of part-s thc eccentric is turned on its axis in the one direction or the other the distance necessary to reverse the engine by moving sleeve D endwise in 'the one direction or the other. Of course the l eccentric must be adjust-cd accurately in either-'position to give the proper lead to the valve, and for such purpose adjustable stops are provided, as follows, to wit: Arm B Ais provided with a curved slot la, this slot being concentric with the axis of pin C. Inthis slot operates stud c, the latter being screwed into a threaded hole in the eccentric or otherwise fastened thereto. Arm Bat the end walls of slot l) is provided willi adjustingscrews b', these screws engaging threaded stud e. These vscrews arc provided with jam- Way or the other.

nuts b2 for holding them in adjustment. These screws are cut square across at the ends, and the sides of stud e vare flattened `where they engage the screws to offera fair -'bearing for the latter..yBy adjusting these screws the eccentric is stopped in its reverse movements in the exact positions forvoperating the valve in running the engine the one Stud e.v is provided with nnt e.` This vn-ut should fit so tight on the studthat it will not-be turned by the jar or motion in running the engine. This nut is backed ot `a'triile from arm B when the reversing mechanism is to be used, and in such position is of course inoperative. The reversing mechanism is mostly used in controllling the-engine in traveling on the roadgbut when the engine is to be used, for instance, in thrashing, sawing wood, or other purposes, the reversing mechanism having been adjusted to run the engine in the desired direction bytightening nut c against arm B, the reversing mechanism is released from all strain in operating the engine.

I is a lever of the bell-crank variety and is fulcrumed at I. The forked arm of this lever embraces collar II, the prongs of the lever having studs v1T, that ent-er holes in col'- lar II, these holes, as shown, being elongated circumferentially of the collar, so that the parts are not cramped by the swinging movement of lever I. The other end of lever I is connected by link J with shifting-lever L, t-he joints being sufiiciently loose to prevent the parts from cramping by reason of levers I and L operating in planes approximately at right .angles to each other. A sector M is provided having notches m and m' for engaging latch L of the reversing-lever when the lever' is in t-he respective positions required for holding the eccentric in its reversed positions.

To compensate for lostmot-ion'caused by wear, thepivotal connect-ion between the reversing-lever and link is made adjustable lengthwise of the reversing-lever, the latter having a longitudinal slot l, in which the pivotal pin or bolt j operates, with suitable means of adjusting this pin or holt lengthwise of the lever to give greater or less throw of the link with a given throw of the reversing-lever. For instance, in Fig. S adjustingscrews 1 2 are shown for the purpose, although the means of which such adjustment is made is not material. Bracket-arm G has a branch arm G2,.the latter terminating in membeis g g g?, for attaching, respectively,` the bell-crank lever, reversing-lever, and sector. \Vith this construction, by reason of sleeve E heilig journaled in. a stationary box, the eccentric-arm is supported by pin C substantially the same as if this pin directly engaged a journal-box. i

What I claim s.-

1; In combinatioman outer sleeve ernbrae.-

ingan inner sleeve, the latter embracing@ steady-pin, an eccentric 'rigidly secured to thel outer sleeve-fand having a diagonal slot, the inner sleeve having attachments operating in such slot, the inner sleeve being held from turning on the steady-pin, and meansfo'r a diagonal slot in theouter sleeve, an attachment of thepinner sleeve,operating in such i slot, substantially as and for the purpose set. forth.

3.- In combination, eccentric-arm, steadypin connect-cd therewith, sleeve mounted 0n the steady-pin, such sleeve being embraced bya second or outer sleeve, such outer sleeve, an eccentric rigidly secured to theouter sleeve, and mechanism, substantially as indicated, for reversing the eccentric by means of reciprocating the inner sleeve, substantially'as and for the purpose set forth. e

4. In combination, eccentric-arm, steadypin, inner and outer sleeves, the latter bearing eccentric and operating in a stationary journal-box, a stud connected with the eccentric, such stud operating in a slot in the eccentric-arm, and adj ustin-gsserews connected with the eccentric-arm, such screws being located at t-he end of said slot in position'to engage the stud of the ecccntrie.at the extreme of the throw, substantially as and for the purpose set forth.

5. In combination, eccentric-arm, steadypin, and eccentric, a stud connected with the eccentric and operating in a slot inthe eccentric-arm, and adjusting-screws connected with the eccentric -arm Afor engaging such stud at the estreme of its throw, such stud having a nut adapted to bear against the eccentric-arm, whereby the eccentric may be rigid with-such arm,substantially as and for the purpose setY forth.-

6. In combination, steady-pin, inner and outer sleeves mounted the one on the other, the inner sleeve operating on such steadypin, substantially as indicated, bell-crank lever for reciprocating the inncrsleove, and link connecting the bell-crank lever with tho reversing-lever,tl1c pivotal connection between link and reversing-lever being adjustable lengthwise the latter, substantially as and for the purpose set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 28th day of Januar 1889. 1 t n REINHARD SCIIEIDLER. Witnesses: 's j Y KATHARINE Koos, y EDWARD KIBLER.