US900427A - Motion-indicator. - Google Patents

Description

W. S. RUSH. MOTION INDICATOR.

APPLICATION FILED APR. 29, 1907.

Patented 0013.6,1908.

{ 2 SHEETS-SHEET 1 W S. RUSH.

v MOTION INDICATOR.

APPLICATION IILED APR. 29, 1907.

900,412? Patented Oct. 6,1908.

2 SHEETS-SHEET 2.

I UNITED STATES PATENT oFFIeE.

- WALTER s. RUSH, or SAN FRA e rs'eo, CALIFORNIA.

' neiaeohari;

T0 all 'ivhe'm'fi i I r w Be it known'that I, WALTER 'SQRUsH, a

citizen vof the United: States of America, and

a resident 'bffthe' eityj andjcounty. of San Francisco and; State of fialifornia have i-nvented I new and useful "jgl nnlrovements V in derives its movements from an engine,'or motor.

- The invention has for its object, chiefly, to provide a means or device that will ind1cate 1n one p ace, or in several different laces or stations in a ship, the rotation oft e main shaft, or 'another art deriving its motion from the engine; showing by its movement the speed at which and also the direction in which it is rotating, and the changes in the direction of the motion, as the same take lace'.

A motion-indicator of my invention consists of t e various parts and combination of parts as hereinafter described, and it em races a novel means of operating an indicating-devic'e in harmonywiththe revolutions of'the engine-driven part; a novel means of reglsterlng the number of revolutions 1n a forward direction, and the number in the reverse direction, or backward, separately of each other; an indicating device of novel construction, and means for operating by or from the indicating device aln audible signal, all hereinafter set forth-in the following description and pointed out in itselaims, atthe end of this specification.

The accompanying drawing to which 'reference ismade herein illustrates a complete matron-mdwator of m 'IIIVGIItIOII, and also the manner 1n WhlCl'l arrange or combine .two or 'more motion-indicators for operation w1th,]or from, the same actuating-mechani A a Figure 1 is a view, partly in elevation and partly in vertical section, of 'an apparatus embodying my invention, and representing the motion-imparting devices, three distinct and separate sets of indicating dc vices, supposed to be located at. different oints, and

cnnnecting mechanism between t lle indieatingand the motion-giving devices. I Fig; 2 is a View, partly in elevation and partly in vertical section, ofthe devices for operating the apparatus, that is, the devices or mechanism v v i speciffieation oi Letters Patent. ..-f. A pucafionmea ii rima 1907. seriaim's'rasn.

- f 'lewms i the shaft is being driven,

' .MoTroinrNnrcAToR, I

Batented Oct. 6, 1908.

.from which the indicators are operated. Fig. 3 illustrates a cons ruetion of actuatingmechanism by whie the movements of the indicating-hand are produced mechanically from the movements of the cross-head and reversin 'meehanism in a reciprocating en-' gine'.. 4 is a detail front-view, and Fig.

i 5 a;sideview partly. insection, both on an enlarged scale, of the friction-clutehand eonnectedparts of the mechanism that vibrates and shifts the indicating-hand. Fig. 6 is a horizontal sectional view in detail, on anenlarged scale, of the friction-joint seen in casing X, Fig. 1; the same being a modification of the construction represented in Figs. 4 and 5. I 1 A novel feature of this invention consists in a motion-indicatingdevice having a hand or indicating-part capable of vibratory movement at-a sig t-opening in an inclosing case, and in mechanism for imparting movement to the hand in unison withthe revolutions of a shaft, such as the engine-driven shaft in a ship; the said mechanism being adapted also to change the Working position of the vibrating-hand from one side of the center of the sight-opening to the opposite side thereof, as often as a change in the direction of rotation of the shaft takes place. a In a system embodying my invention there may be employed one or more indicating deviceslocated at more or less widely; separated points, and I have in Fig. 1, illustrated three Indicating devices, each differing from the-others-in details ofconstruction; and these are designated, as entireties, by the reference characters X, Y

visib e portion of the indicator and the parts directly connected therewith are inclosed for protection within cases W, each having a sight opening d through which the index or hand is exposed to 'view and by which its working vposition and its movements,

and Z, 1 respectivel The hand or index constituting the whether to one side or the other of the center of. such opening may be observed.

The mechanism through which the motionindicating hand B is caused to vibrate from and in harmony with the revolutions of the engine-driven shaft, operates also to change the working-position of the hand from one side of the center T of the sight-opening to the opposite side, as often as a change .inthe direction of the motion of. the shaft: takes place. This part of the invention termed the vibrating-mechanism has the additional function, therefore, of shifting or changing the position of the indicating-hand automatically by or from eveny reversal of the motion of the shaft.

The mechanism by which the vibrating movements and the changes in the workingposition of the indicating-hand are roduced directly. from a revolving shaft, wil be described with reference to Figs. 1 and 2 of the drawin The liar O sets across the shaft A, and is movable in an are on a center consisting of a rocker-bearing D, in which the, bar C is also fitted to slip, or move longitudinally, to a limited extent. The longer arm or member of the bar C that is on one side of the bearing D lies u on or against the shaft A, and also in the path of an angular abutment 5 that pro-' jects or stands out from the peripheral surface of the shaft. member of the bar 0 on the opposite side of the center D the motion-indicating hand B is connected either by a single wire, when it can be carried directly therefrom to the actuating-mechanism; or, in situations where it becomes necessary to turn and carry the wires in different directions, the connection is made by a line of wires 2 p p-, and bell-cranks pulleys or other direction-turning devices, 2. Through these connections the bar C being alternately lifted and dropped by the abutment 5 in the revolutions of the shaft, imparts to the hand of the indicator,

short vibratory movements in harmony with the revolutions of the shaft. The indicatinghand thus shows by its movements the relative speed of the shaft, and the fact that the shaft is in motion, or is at rest. Instead of 'being rigidly fixed in the bearing D, however, the bar 0 has a limited movement longitudinally in the hole or socket in the shaft through which it passes; the extent of such movement in one direction being limited by a fixed collar 6, and in the opposite direction by the coiled spring E. One end of the spring E is attached to the end of the bar C,,and the other end to a fixed point on the shaft-bearing below the center of movement D of the bar O, and under its tension the barC is so retained in normal working position with respect to'the abutment 5, that while the shaft A continues to revolve in a forward direction, as indicated by the arrow inFig. 1, the bar lying over the shaft will be lifted and dropped as the abutment 5 passes under it. On the other hand, when a reverse motion of the shaft A takes place and it is revolved in the direction of the arrow in Fig. 2, the abutment 5 will be carried against the end of the bar 0, and, striking that end, it will push the bar longitudinally through the bearing 1) as the shaft continues to turn backward, with the effect to carry the bar C from its position over the shaft to the position under it, indicated by dotted lines in Fig. 2, Changing To the shorter arm or maintained in working position to the right I n or to expansion and contraction of the metal,

'- codes? the position of the longer member of the bar C from above the shaft to such position below it, and correspondingly changing the position of the shorter member on the opposite side of the bearing D, in the manner described, has the effect to move the indicatinghand from one side of the center of the sightopening to a working-position on the opposite side; for the reason that the point of attachment of the connecting wires 71 with the 75 bar C is set above the aXisD a sui'licient extent to allow the hand B of the indicator to be drawn over to the opposite side of the center T, by the spring ll (or H thereby changing the working position of the hand from the left to the right side of the sightopenin \Fith the longer member of the bar O ying against the lower side of the shaft A, therefore, the indicating-hand is and the indicating-hand will be drawn over to the left of the center '1 by the increased strain thrown on the wires.

It will be seen that the function of the spring E is to hold the bar O against the lower side of the shaft when occupyin the position indicated by the dotted lines in ig. l, as well as to maintain the bar in position with the collar 6 a ainst the bearing D; whereas the effect of the spring H (or H") upon the conneeting wires is to keep them under r0 er tension in both working positions of t e ar C, andto hold that'part also in the path of the projection 5 when the bar is lying over the shaft. The two spring's EII, thus maintain the required degree of tension upon the line of connecting wires, and so control the vibrating hand that, under all variations in the length of the wires due to stretchin the relative position of the indicating-hand in either of its two adjustments to one sidc'or the other of the center T will remain the same. Provision is made for regulating the tension of the spring H by attaching one end to a nut and screw 13.

In the form or style of indicator illustrated at Y in Fig. 1 the indicating-hand B is mounted on, or'is a part of, an arm 12 that is movable in an are on a stud 8, behind the curved sight-opening d in the front of the case W, and the connection between the arm 12, and the aetuatin mechanism at theshaft A is made throug wires pp and bell-cranks 2. In the indicator illustrated at K Fig. 1, the wire 1) is connected to the arm :26 of tho-frietion device employed in that indicator, which is re )rcscnted in detail in Fig. 6. f In the "orm of indicator illustrated at threaded sleeve.

Fig. 1, the indicator-hand B moves in ri ht lines and is fixed on a slide-bar 24, mova 10 in guides 25, and attached by one end to the oscillating-arm 112, that is arranged to move" other of the shaft, also, the indicating-hand.

B is moved over the center T to a workingposition on the opposite side, as before described, A vibrating mechanism of this: construction has the advantage of imparting the vibrator movements. to the indicatinghand, and a so of changing the working-position of the hand in unison with the enginedriven shaft A directly from and in harmony Withthe movement of the'shaft, througha single line of connecting wire.

A novel feature in thls part of the mechanism in the several forms of the indicator consists in compensating connections preferably in the form of a frictionjoint-or coup ling between the vibrating-arm 12 (or 12 or 112) and the part to which is connected the wire leading to the vibrating-mechanism, The object of this part of the invention is to prevent the indicator hand from being thrown out of its normalworking position on one side or the other of the center T, by variations in the length of the connecting Wires, such as may be due to the expansion or contraction of the metal, stretching of the wires or from other causes. v 1 Y As illustrated in Figs. 4 and 5 the arm 12 has a hub 14 screw-threaded to fit on the thread 10 of a sleeve 9, which is fixed to or formed in one piece with thesprocket-wheel 15. The sleeve is fitted loosely on the stud-8, and is also joined or attached toa cam 3 on the same stud, to which is attached one end of the coiled .spring H. The tension of the spring is thus constantly appliedtothe sleeve in opposition to the strain ofthe chain on the sprocket-Wheel, and the sleeve 9 receives'ro' tative motion on the stud, first in, one direction and then in the opposite direction, as the vibrating mechanism draws on the wire.

A lock-nut 17 on theth-readed-portion of the/ sleeve in front of the arm 12, rovi ded with an arm 18, bears against the ub 14.0f the arm 12 when the arm 18 is ressed outward by the spring 21, withth'e e ect to bring the two faces 1920 in contact and set up suffieient friction to lock the arm 12 on the screwon the sleeve when the two arms 121'8 are pressed and held apart by thespring2'1, as in the position illustrated inFig. 4,'and under The arm 12 is thus locked suchcondition' the arm 12 will, be locked on the sleeve andwill vibratewith it. On the other hand, the arm 12 will be loosened on the sleeve, and will adjust itself to its proper working position'in the sight-opening whenever one of the arms (12 pr 18) is pressed to-' wards the other by commg in contact with the stops 2223, whether by moving the arm12 towards the arm 18, or the last-mentioned arm towards the arm 12. Under turn on the stud 8 without affecting the arm '12,. and any required extent of movement of the sleeve may-take lace in either direction according as the coilbd spring H may take up any additional lengthening of the corn necting wires arising from expansion or stretching or any reduction in the length of the wires may cause them to act upon the sprocket-wheel in opposition to the tensionof the spring. The angular movement of the arm 12 towards the arm 18 is produced by the fixed stop 22, and the similar movement of the arm 18 towards the arm 12, by the fixed stop 23, which is situated on the opposite side of the center of movement 8. The location of these stops is such that under normal conditions of adjustment the arms 12-18 will not .come in contact with the stops, and will be held "apart by the coiled-s ring 21 placed between them. Butshould t e vibratory movement of the arm 12 towards the leftbe increased beyond its normal length when the indicator occupies a working-position on the left of the center T, the arm 12 will strike the stop-22, whereuponit will be pressed towards the opposite arm 18, and its movement in that direction bringing the two arms towards each other, will act to reduce the degree of frictional contact between'the parts 14-17 nec-.

essary to-lock thear'm 12, thereby loosening that part on the sleeve, and allowing the sleeve to turn separately of the arm. In like manner, an increase in the length of angular movement of the arm 12 toward the rightwhen the indicator B has its workingosition on the right of the center T, will have the effect to bringthe arm 18 against the stop 23, and the arm 12 will be loosened on the sleeve the same as before.

In that modification of the compensating or frictionjoint which is illustratedin Fi 6, the wire is connected with the indicatingarm 12 y a short arm or lever 26 fixed to,

or formed as a part "of, a sleeve or tubular piece 30 that forms the female -member-of a friction-clutch, composed of'a hub or tubular part 31 on the end; of the indicatorarm 12" constituting the male-member. That portion of the member 31 over which is fitted the member 30 is preferably of conical shape to secure the necessary friction, and the'parts are pressed together by the coiledspring 32 placed between themember 30 and a threaded-nut 34 on'the cylindrical portion 7 5 such conditions, the sleeve will be free to of the member. In theevent of a change taking place in the angular position of the arm 26,'such as would take place under variations in the length of the connectingwires, whereby the arm 12 will be brought against and arrestedby one or the other of the fixed stops -2223 in the case, the member 31 to which is attached the arm 12 will move in the part 30 of the coupling,-and allow the arm toassume a different angular position. By this means the relative working-position of the indicating-hand in the sight opening is kept always the same, whether it be set to vibrate on the left, or on the right, of the center T.

At casing Y, Fig. 1, 1 have illustrated Oneway in which I operate two separate counters, or registering-devices 36'37, directly by or from t, e vibratory movements of the indicating-hand, and thus provide a registration of the revolutions when the shaft is traveling forward, and a separate register of the revolutions made by the shaft when traveling backward By this means the register 37' ives the total revolutions forward, and t e. register 36 the total revolutions backward. The registering -devices employed are of any well-known construction. They are situated in the case in close relation to the arm 12 or to the bar 24 when the indicating devices are of the character indicated at Z, are separately operated by a lever 38 connected at the fulcrum-end with the units-wheel of the counter by any wellknown means, such as a pawl and ratchetwheel, the lever 38 being set to stand in the path of the movable indicator, so as to be struck and moved by that art in its throw. The return-throw of t e lever 38 is produced byv a coiled-spring 41. Two suchregistering devices, having their respective levers 38 oppositely setin this manner are separately operated by the armll to register the forward and the backward revolutions of the shaft from'which the indicator is operated. In the case X there is shown but one register which is arranged to show the total number of revolutions, both forward and backward, and is connected with and operatedfrom the sleeve 30 of' the compensating joint through a train of connectin parts consisting of a friction band 43 encircling the sleeve, an arm 40 connected therewith and a link 42 between this arm and an arm connected with the units member of the counter or register.

Fig. 3 illustrates {the manner in which the vibrations of .the'indicating-hand and the changes; in its working-position from one side to the other side of the center of the sight-opening can be produced from the mechanism that changes its position with each change taking place in the directionof rotation of the shaft, such as the lever 51 of reversing mechanism. From the wire 50 a wire 52 is carried to a lever 53 pivotally mounted on the engine-frame, and having an arm 54 extending in the path of a stop or projection 59 carried by the engine crosshead 56. The wire 52 is attached to the end of one member of the lever 53, and to the opposite end a coiled spring 57, which is also attached to a fixed point 58 on the engineframe, so as to maintain the lever 53 in proper working position. As the member 5 of the lever is struck by the projection onthe cross-head, it produces a vibratory movement in the wire 50, which is transmitted to the indicator-hand through the connecting-wires, thus causing the indicator to vibrate in harmony with the reciprocations of the engine.

Combined wlth'each indicator, illustrated at X and Y, Fig. 1 is a means for producing other side of the sight-opening but arranged so that no si nal is given when the indicator is merely vi rated; thesame comprising a bell 60, and a striker-carrying spring 61, having an angular offset 62 so arranged in the path of a pin 70 on the indicating-hand 12 (or 12*). that the spring will throw the striker against the bell and give a signal every time the indicating-hand is set over from one side to the other of the center T. The signal thus given by the bell makes known to the ilot the change in the direction of the trave at the instant it takes place, without requiring him to ascertain the changeby looking at the indicator-hand. This signal-bell IS a usefulauxiliary to the indicating-hand; particularly in relieving the pilot from the necessity of remaining at all times in a position at the Wheel where the indicating-hand will be in sight. Every change in the movement of the engine from ahead to astern, or in the opposite direction to which it was previously traveling is thus made known to the pilot by the bell at the moment of the change, Without the necessity of watching for the movement of the indicating-hand.

The mechanism to which my invention relates is, as described, adapted to indicate the movements of a piece of machinery, and, merely for the purpose of illustrating the invention, I have, in this case, as for instance in Fig. 1, chosen to illustrate an apparatus in which there is a visual indicator B, an audible indicator 60 and recording indicators 36, 37. Therefore, when 1 herein refer, without WOIdS of limitation, to an indicator, I desire to be understood as applying that term in a broad'sense, intending it to include as well, devices that indicate by means of a more or changes in the working position ofthe indi-' cator, these consisting of relatively long indicators represented.

In Fig. 3 hereof, I have illustrated an embodiment of my invention having the motiontransmitting devices connected directly with the parts of an upri htireciprocating marine engine. This speci 0 form of motion-transmitting connection I have made the sub'ect matter of 'my applicationNo.'328,970, ed Au st 2, 1906.

t will be seen that the connections described impart to the indicator two sets of movements, first, shift movements, or

movements that serve to indicate changes in the direction of motion, or in the setting of the parts of the apparatus to cause chan s in the direction of motion, as indicated in't e arrangement shown in Fig. 3; and, secondly, vibrations or relatively short movements that are entirely independent of the shift movements, and which serve to indicate revolutions, reciprocations or other movements by which the speed of the mechanism ,is indicated. These two sets of movements given to the indicator, may be either on curved lines, as indicated at X and Y, Fig. 1-,

or on right lines, as indicated at Z'in said figure. cator and the part of mechanism whose movements are being represente'dare direct, that it to say, are such that the indicator gives a direct record of the work of the shaft or other part to which connection is made. For many reasons it is most desirable to make the connections above referred to of the me-. chanical sort; and .I prefer to arrange them sothat they tend to impart to the indicator,

in making the shifts above described, movements that are abnormall long. This tende ency to impart abnormal ylong shift movements is either constant and regular'at each shift movement, or irregular in occurrence, as for instance when the connections are either unduly loose or taut. But while the connections are of such nature as totend 'to impart these abnormal movements totheindicator, the latter is restrainedand maintained in proper working position,"this result being secured by reason of the yielding joint or connection between the indicator and the motion-transmitting wires or connections, and the positioning stops 22 ,i 23 which arrest the indicator afterit has been shifted to the.

desired, normal, extent,

Where, in this specification, I seak-'of' shifting the indicator, I refer to'the relatively long movements that areimparted thereto to indicate motion direction, and where I speak of vibratingit, Irefer to the relatively s ort movements that are imparted thereto tory character, suchas the audible or visual The connections between the indi-' {to indicate revolutions, reciprocations or such like movements indlcatlveof speed.

not limited in its useful applications to apparatus for indicatin the movements of a rotating shaft,as is c ear from a consideration of the embodiment thereof indicated in Fig.

dicator as being used in connection with, and adapted to show the movements of a revolv such ex ressions are not used 'for the purpose of imiting the invention to a particular use or application, but rather for'convenience of expression.

Having thus described myinvention what I claim is T shaft, of an indicator for showing the movements thereof comprising a member having a to and fro movement andshiftable as to its working plositionlfrom oneside' of a central point to e otherside, and capable of vibratory motion in either of said positions, the

to indicate the direction w ich the shaft is being turned and by its vibrations the speed at which it is being driven, and means actuated its revolutions, operating at every reversal of the'motion thereof to shiftthe working osiposition in harmon with the movements of the driven'shaft, su stantially as set forth.

2. The combination with an engine-driven shaft, of means for showing the movements thereof. comprisin a case having a sight opening and an in icator having a to and fro movement at the sight opening, and capable of being shifted as to its working position and of being vibrated in either of its working positions, and mechanical conneccontrolled by its revo utions, and operating to vibrate the indicator in whatever osition it may occup in consonance with t e rotations'of the s aft, and arranged to shift'the workin position of the said indicator at each shaft,substantially asset forth. v c

3. In a motion-indicator for an engine I driven shaft, the combination ofan indicator opening, and shiftable as toworking-position from one side'of the sight-opening to the o posite side, means operating to vibrate t e said indicatortin harmony with the revoluevery reversal of the said shaft, and a registering-device connected with the sald vibratmg means and operatedin unison with the vi rations of the said lndlcator.

It will be understood that my invention is 3. Therefore, when'I herein refer to the in-' ingshaft, I wish it to be understood that said member by its working osition serving tions of'the engine-driven shaft and to shift; the working-position of said indicator 1n 1; Thecombination with an engine-driven directly from the said shaft and controlled by. A

tion of the said member from one side 0 the center to the other, and to vibrate it in either a tions actuated directl from the shaft and reversa of the directionof rotation of the mounted for vibratory movement at a sight- 4. .In a motion-indicator for an enginedriven shaft, the combination with a shaft, and a hand having vibratory motion at a sight-opening, andadapted by its vibrations to indicate the motion of the engine-driven shaft, and by its working-position with relation to the center of the si ht-opening to iiidicate by itsposition the direction in which the said shaft is being driven; -of means for vibrating the hand and for changing its workingposition from one side of the center to the opposite side in every reversal of the engine, comprising'a bar movable in an are on a pivotbearing, and also movable longitudinally through the said bearing, means connecting the indicator-hand with the member of the said bar on one side of its bearing, for moving the hand in harmony with the said bar, a projection on the shaft adapted to engage the said bar on the opposite side of said bearing and to lift and drop the bar in the revolutions of the shaft and by contact with the end of the said bar in a reverse movement of the shaft to change the, working-position of the bar with relation to the shaft, and a spring acting on the bar in opposition to the projec tion carried by the shaft.'

5. In a motion-indicator foran enginedi'iven shaft, the combination with a shaft, of a hand, a pivot on which the hand is mounted for vibratory motion behind a sight-opening, means for changing the working-position of the hand from one side of such center to the opposite side in every change made in the direction of travel of the v shaft, and for imparting vibratory motion to the hand -.in either Working-position; comprising a rocking-bar, a pro ection on the shaft adapted to lift and drop the said bar in the revolutions of the shaft and by engaging the end of said bar. to change the working positionof the bar as often as the direction of rotation ofthe shaft is changed, an arm movable angularly above on the pivot of the hand,

a friction-clutch connecting said arm with the hand, and means connecting the said arm with the rocking-bar.

6. In a motion indicator for an engine driven shaft, the combination of a hand, a

support on which .the hand is mounted for vibratory 'motion at a sight-opening and also changeable from a working-position on one side of the center ofsaid opening to a correspending position on the opposite side of such center, an arm on the pivot of the hand movable angularly around tho pivot, means for vibratingsaid arm from the revolutions of the engine-driven shaft, said means operating also to change the working position of said hand in every reversal of the motion of the engine-driven shaft, means connecting the said arm with said vibrating .means, a friction-clutch connecting the hand with said vibrating-arm, and means for regulating the friction between the parts of said clutch.

7. In a motion-indicator for an enginedriven shaft the combination of a hand pivotally mounted for vibratory motion behind a si ht-o enin and chan eable as to working-position from one part to another of said sight-opening, an arm movable angularly about the pivot of the hand, and a frictioncoupling between said arm and the hand, comprising a conical hub on the hand movable on the pivot, a sleeve surrounding the conical hub and towhich the arm is secured, 4

means for regulating the frictional contact between the hub and the sleeve, comprising an ad'ustable nut on the hub and 'a spring place between the hub and the nut, and

means for imparting vibratory motion to the said arm from the revolutions of the enginedriven shaft. I

8. In a motion-indicator for an enginedriven shaft the combination, of an indicator having a to and fro motion; a spring for moving the indicator in one direction; means connecting the indicator with a moving part of the engine for moving it in opposition to the force of the spring and in harmony with the motion of the engine, means operat ing to change the working-position of the indicalor in every change made in the direction of motion of the engine and a compensating connection between the indicator and the said .r

connecting means. 7

9. In a device for indicating the work of a driven shaft, the combination with a shaft,

of an indicator, a direct mechanical connection'from the shaft to the indicator through which the movements of the shaft are transmitted to the indicator, and having a part bearing upon the shaft, and a spring for maintaining engagement of the said part with the shaft, the spring bein located at the end of the connections distant from the shaft, substantially as set forth.

10. In a device for indicating the work of a ships shaft, the combination with the shaft, having a contact projection, of an indicator, a direct, flexible, mechanical connection between the shaft and the indicator having a part bearing upon the shaft in the path of the said contact rojection, and a s ring situated adjacent to t ie indicator for ho ding the conof an indicator, mechanical connections extending from the indicator to the shaft and including a reversible device resting upon the shaft and adapted to be engaged by the contact device of the shaft, and arranged to be reversed thereby Whenever the direction of rotationof the shaft is changed and maintained in such reversed position until the di rection of rotation of the shaft is next changed.

under tension, and means for changing tainm movements of machinery, the combination with the mechanismg gwhose movements are to be indicated, of an'indicator adapted to be' shifted from one osition to another to indicate changes in irection of movement, mechanical connections between the indicator and the mechanism whose movement it shows, means for putting the conne'e'tiolrli's t e tension of the connections when the of movement of the mechanism is changed to cause a shift of the indicator.v

13.- In an apparatus for indicating the movements of machinery, the combination with the machinery whose movements are to be indicated, of an indicator adapted to be shifted from one positionto another to indicate direction of movement, connections in-. cluding a yielding joint between the indicator and a moving art of such machinery adapted to shift the indicator to agree with the direction of movement of the machinery, the connections being arran ed to impart to the indicator an abnormal y long 1 movement, means for arresting the indicator and mainit in position when it has 'been shifte to the proper extent the said oin-t allowing movements of parts of theconnections after the indicator has been-stopped;

14. The combination with a shaft havin a projection 5, ofa bar ada ted torest on t e periphery of the shaft in t e 'ath of the proection, a rocking shaft in w ln'eh the bar is mounted, the bar being free to slide in its bearing therein to a limited'extent, an indicator, connections between theindicator and the bar, and means for holding the bar in engagelalment with the shaft, substantially as set ort 15. In a device for indicating the revolutions of ashaft, the combination with the shaft, of an indicator, a single line of direct mechanical connections between the shaft and the indicator,- means f rim arting to the indicator through the saidsing e line of con-' ncctions vibratory movements in one path when the shaft is rotated in onedirectionand in a different path when the shaft is rotated in the opposite direction and. a contact bar to which the said line of connections is secured arranged to' bear upon one side of the shaft when the latter turns in one direction and on the opposite side of the shaft when it turns in the other direction whereby the change of the position of the said bar from one side of the shaft tothe other operates to shift the entilre line of connections, substantially as set fort l. v 1

- tions, a movement in one irection 16. In an indicating apparatus for apiece of machinery the combination of a reciprocating indicator, a single line of reciprocating connections through which the movements to the indicator are communicated, means for giving to the said reci rocating connecdirection. when the mechanism is running forward-and for imparting a reciprocation'in the other direction when it is running backward, means for imparting relatively short re'ciprocations to the connecting devices to indicate the speed of.

the mechanism, and means for maintaining the said single line of connections, under proper tension, substantially as set forth.

" 17. In :an apparatus for indicating the movements of a shaft, the combination with the shaft provided with-a projection, of a recipro'catingjndicator, reciprocating connections forgiving motion to the indicator, and a contact-piece operated upon by the rojecreciprocating connections, and arranged to be set m one pos1t1on-or another, and through the said reciprocating connections to set the indicator in one os1t1on or another, accordingly, as the sha t turns 1n one directlon'or 'tion on the shaft and connected with't c said pensating JOlIlt or connection between the said connections and the tially asset forth.

19. In an apparatus for indicating the direction of rotation of a shaft, the combinaindicator, substantion with the shaft, of an indicator, connections through which motion is imparted to the indicator to'shift it from one position to another, a bar to which the said connectionsare united, aspring for holding the bar in contact with the shaft when inclined in one direction, another spring for holding the bar in contact with the shaft when inclined in a different direction, and means operated by the shaft for shifting the bar from one inclined position to the other accordingly as the shaft is turned, substantially as set forth.

WALTER S. RUSH.

Witnesses: EDWARD E. OsBoRN, L. M. FRANK.

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