US1345355A - Signal-recorder - Google Patents

Description

H. W. DOUGHTY.

SIGNAL RECORDER.

APPLICATION FILED APR. 3.1917. I

Patented July 6, 1920.

n 2 W 7W Na AQ R F V \\.wNw Q \N MW a i1- R R R x QM. :llllllllll l ll ll' lTlll lll'hilllVPl N ,8 Q m determined tape travel, upon the movement UNITED STATES orrrce.

HERMAN W. DOUGHTY, OF BINGHAMTON, NEW YORK, ASSIGNORQBY MESNE ASSIGN- MENTS, TO THE GAMEWELL FIRE ALARM TELEGRAPH COMPANY, OF NEWTON I SIGNAL-RECORDER.

Original application filed November 30, 1914, Serial No. 874,732. Divided and r 3, 1917. Serial No. 159,407.

To alll whom it may concern: 7

Be it known that I, HERMAN W. DoUGH'rY, a citizen of the United States, residing at Binghamtomin thecounty of Broome and State of New York, have invented an provement in Signal-Recorders, of which the following is 'a specification; j This application is ad'vision of my application SerialNo. 874,732,.filed November 30, 1914. v o

My invention relates to that class of s gnal recorders, frequently referred "to .as multiple pen registers, in which a plural.- ity of'markers are provided, each having independent clectroma gnetic operating, or

controlling mechanism, and has specific reference to propelling-mechanism for feeding the tape or strip of material upon which the record is to be made, and self-starting and self-stopping mechanisnifor the propellingmechanism, subject to the joint control of said propelling-mechanis n and of the magnetic controlling or'operating mechanism associated withthe various markers. V

The objects of this invention are as follows i "A To provide such an improved self-starting and self-stopping mechanismifor the propellingmechanismof a recorder, that said propelling-mechanism will be permltted to start, and said starting. and stopping mecha-- nism will be adjusted to adapt it to 'actlto stop said propelling-mechanism upon a presize of the tape roll upon such take-up reelj To provide a recorder arranged to operate at high speed and toexposea comparatively great length of tape between, thie payout reel and take-up reel,in which the tape may be almost instantaneously brought to full speed without leaving slack tape between the pay-out reel and take-upreel. 7

To provide arecorder having a pay-out and a take-up reel for the record'tape, said take-up reel being supplied iwith suitable propellingniechanism and starting and Specification of Letters Patent.

UPPER FALLS, 'ivmssnonnsn'r'rs, A CORPORATION OF NEWYORK.

Patented July 6, 1920.

this application filed April get-her with governor mechanism adapted to regulate ithe speed of linear movement of said tape regardless 0 f the size of tape roll upon. said take-up reelqg V V V 5 ,To provide a recorder having tape propelled by a take-up reel, from a frictionally retarded pay-out reel, in which the speed of tape movement will lie-practically constant under all operating conditions. j

In attaining the feature ofthis invention whereby a self-starting and self-stopping mechanism is so applied to the take-up reel of a recorderthat said mechanism iswadapted to act tostop said reel upon a predetermined travel of the exposed tape, regardless of the size of the "tape roll upon such take-up reel,starting [and stopping mechanism. is

provided which is adapted to be operated by the running of the takeup reel to s'topsaid reel, and amember is provided, the movement of which is governed by the diameter I of thetape roll, said member being adapted to so control the selfstarting and self-stopping mechanism that, as the rate of, tape of the takeup,ree l, after any release thereof, will be so decreased that said self-starting travel increases in relation to the rotation of v V the take-up reel, due to the increase in diam eter of the taperoll, the permitted rotation and-,self-stopping mechanism willbe adjusted' to act tostop said take-up reel when 7 said reel .has actedtowind, up a predeter 'mined length of said tape,

5 In attaining the feature ofthis invention whereby,.vin. a recorder. which is arranged V V to operate at high speed and to expose a comparativelylgreatlength of tapebetweenthe pay-out reel and take-up reel, such tape may be almost instantaneously brought to full speed, without leaving slack between-the payrout reel and take-up reel,a frictional retard is provided for the pay-out reel, propelling-mechanism is suitably applled tothe tape and governor mechanism is provided which is adapted to be driven by the tape so as to suitably regulate the speed of move ment thereof, said governor IIIBChELDlSIIl'bG- ing so constructed and arranged that the stored energy therein, when said mechanism is running at normal speed-and the niove ment of the tape is suddenly'arrested, Wlll cause portlons of said mechanism to continue "to run until there has been such relative movement between said portions and the tape that, when the tape" is again started, said tape and, the parts moving therewith will be permitted to reach at' leastfull speed, 7

before said governor mechanism becomes ef-' fective in checking and regulating the speed pelling-mechanism and starting andmstop ping mechanism whereby its movement may he suddenly arrested, and saidpay-out reel being supplied with a frictional retard'suf ficient to instantly absorbthe momentumof said pa -0ut reel and any tape roll thereon,

a mem er is provided, the movement of which is governed by the diameter of the tape roll upon the pay-out reel, and which so governs the application of the frictional retard to vthe pay-out. reel that, when the tape roll upon the take-up reelis at its maximum diameter and the tape ,roll upon the pay-out reel is at its minimum diameter sufficient frictional retard will be applied to the V pay-outre'el to instantlyabsorb the momen-.

' 5' tum of said pay-out reel and any tape roll which may be placed thereon, and that when the tape roll upon the take-upreel is atits 4 minimum diameter and the tape roll'upon I the pay-outreel is at its maximum diameter,

' v (the torque of the propelling-mechanism be- I ing then applied .in rotating the'pay-out reel at -much greater advantage than when the conditions of said tape rolls are reversed) sufiicientfrictional retard will be applied to said pay-out reel so that the torque of the propelling-mechanism necessary to overcome said frictional retard-will be substantially the same as when the conditions of said tape rolls were reversed, and'that, as the diameter of the-tape roll upon the takeup reel increases and the diameter ofthe tape roll upon t e pay-out reel decreases, 'saidfrictional retard will be applied to said pay-out reel at an advantagetjwhich de creasescorrespondingly to the decreasein advantage at which the torque of said propelling-mechanism acts upon the payout reel due to such change in the .diameter of said rollsl v V j g L I I In attaining the feature of this invention whereby, in a recorder having a take-up reel and propelling-mechanism for the record tape applied to said take-up reel, together with governor mechanism adapted'to regulate the speed of linear movementof said tape regardless of the size-of thetape roll upon said take-up reel,a suitable governor mechanism is provided which is so connected to said tape as to be moved exclusively by said tape and to control the speed of 'move-' ment of said tape. 7 r I In attaining the feature of this invention Whereby,in arecorderhaving record tape propelled by a take-up reel, from a frictionally retarded pay-out reel, in which the.

speed of movement of the exposed portion of such' tape 'jWlll be practically constant under all operating conditions,-a governor mechanism is provided which is driven directly by'the'tape, said overnormechanismf being arranged to absor so large a proportion of the propelling force of the take-up reel that the speed of tape movement will be practically constant under all operating conditions. V a

Like charactersv of reference denote similar parts throu hout the accompanying drawings, in whic Figure l is a side elevation of a multiple pen register embodying this invention- Fig. 2 is anenlarged diagrammatic, partial sectionbf the starting and stopping mechanism, taken through the line-2+2 of Fig. 1. i

i Fig. 3 is an enlarged diagrammaticfpartial section of the starting and stopping mechanism, taken through the line 3-3 of Fig. 1;

Fig. 4 is an enlarged view of the control-, ling means for the stopping mechanism,

shown in normal position. 7 v 'Fig. 5 is a view-of the parts shown in F ig. 4, shown in actuated position;

Fig. 6 is an enlarged plan view of a portion of parts of the mechanism shown in Fig. 4, taken on the line 66 of Fig. l. f

Fig. 7 is an enlarged detail of the speedof the driving mechanism.

Referring to 1, His the pay-out reel gears of the tape-propelling governor train. Fig. 8 is an enlarged detail shaft, to which the tape roll l2is attached,

and upon which the friction disk is fixed;

V P, '1he frictionarm l4, plvoted at 10, carries the friction pad 16, and is mountedin such position, with relation tothe friction disk 13, that the movement, of said armwill cause said pad to bear against said disk at differing distances from the center of'said disk, and that the movement imparted to sa d d1sk by the rotation of the tape T011 in paying out the record tape will, through the engagement of the pad 16with said disk, tend to so move said arm as to bring said pad toward the center of said disk.

The retardant effect to said pad 16 must at all times be sufficient to instantly absorb the momentum of the pay-out reel shaft 11,

any tape 12 thereon, and the disk-13.?

The roller 17 is mounted near the free end of the friction arm 14 in such relation to the tape roll 12 that said roller is adapted to act as a follower, to ride upon the'periphcry of said tape roll, and thereby: regulate the movement of the friction 'arml toward the center of the friction disk, fora purpose to be hereinafter more fully explained.

Said parts therefore form a pay-out reel and a compensatingly variable frictional retard mechanism therefor.

T The roller 18 is 'mountedadjacent tothe tape roll 12 and is adapted to form a guide for the tape 19, said roller being formed of, or covered by, suitable elasticallyyielding material soas to be adapted to form aplaten for suitable markers; j

The location of the platen roller 18 is somewhat abo'veandto one side of thetape 7 roll 12, and thetape-19 is drawn around said'ro'ller 18 and is drawn away-from the upper face 'of said roller in such direction as pass abovethe'pay-out reel. 9

Suitably disposed with relation to the platen roller 18 is a'marker 36 ,*slidably supported in the pivoted fulcrum block 20, and moved into contact-with tape 19 onhroller 18 by operating-lever 37. In normalposition, marker86 rests on an inking pad 22. A rod 49 connects io'p'erating lever 37 with one arm of a bell crank pivoted at -48, the other arm of which is connected to rod 50. Rod is pivotal'ly connected, at 44,: to an actuating arm 43 secured'to armature 41 of electromagnet 40, Armature 41 is pivoted at42} The magnet 40, its armature 41, and the structure connecting same to marker 36, form 1 magnetically controlled o'Perating- V mechanism, adapted, upon energization of electromagnet 40, to move marker '36 into contact with the tape on platenfroller18.

It is; evident that one or more markers of the type here shown and described, may be used in the same recorder as indicated by the additional magnet 40, etc., andas theparts corresponding to those already described are alike for all of said markers and their associated controlling mechanism, but one marker and magnetic controlling or operat ins mechanismtherefor have been described.

. T he block 53 isattached to the connecting rod 50 and is adapted to slide over the support 54. 1 Q 'f 7 The actuating pin or projection 55iscarrie d by the block53, and extends a' suitable Clistance therefrom. i

In a multiple pen recorder, it is evident thatthere will be a corresponding block carrying a similar projection associated with eachof the markers. In suitable relation with each of such projections, an individual lever 56 is mounted, having one arm'extending in a direction substantially parallel. tothe line of travel of its associated projection 55. e

' Near the free end of each of such arms, a latch dog 57 is pivoted at '58, each of said dogs having a facev 59 adapted. to be engaged by its associated projection 55, and

also having a projection 60, so located as to be adapted to be brought into contact with the block 53 by the movement of the lever proper working relation with the projection 55.

The individual levers 56,-associated with V the various recording-mechanisms, are loosely pivoted upon the shaft 63, so as to be capable V of independent {movement thereon, and each of said levers is provided 7 with an upwardly extending arm 64,.

I "A bar 65 is'mounte'd" in the path of all 'of the arms 64, said bar being supported; between two arms-66 (as shown more clearly in F igQG), s'aidarms 66 being adapted to be I v connected to suitable controlling mechanism for such feeding mechanism is provided .for propelling. the record tape, so that when any ofthe markers'of the recording-mocha I nismare actuated from normal position, the

latch dog 57 will swing on its pivot58 from f the position shown in Fig.4, asthe projection 55 moves' beneath said pivot, and thereby'transmit movement to the associated individual lever 56, whiclrwillpin turn, through the engagement of its arm64with.

the bar 65', swing the arms66 ontheir sh aft.

1 As shown, the arms '66 arenot mounted on the same shaft as the individual levers 56, this construction being illustrated in the interest of clearness, but 'it'is evident that the shaft '63 may be employed for supporting both the arms 66 andthe levers 56;

.. As the block moved from right to notch :61 in said latch. dog 57 is brought against the limit pin 62' so as to prevent further swinging of said (dog, whereupon the'-f11rtherf'movement' of said block 53 toward the left,willibring the projection 55 to-the left of the face 59, and thus permit left and its projection 55 swings the latch 7 dog;57 from the position shownin Fig. 4 totheposition shown '-in'Fig.,5, a side ofthe the associated individual arm 56 to drop to its normal position.

When the block 53 thereafter moves from the left to right, it will swing the latch dog 57, so as'to permit the projection 55 to pass to the right of the face 59, without materially moving its associated individual lever 56 (see dotted, lines Fig.5). The, further movement of said block 53 toward the right willpermit the latch dog 57 to drop to the left of the projection 55, and the weight of the arm of the lever 56 will cause it to fallto the position where the engagement of the projection 60 with the surface of the block will swing the face 59 into the path of the' projection 55, as shown in Fig. 4.,

The bar 65, arms 66, levers 56, dogs 57 and projections55' therefore form controlling-means, operated by the recording-mechanism, and adapted to move a member of a starting and stopping mechanism'to disengaged position duringithe actuation of any marker from its normal position tov its operated position, and adapted to permit'such member to move to engaged position before the completion ofsuch actuation of said marker, and further adapted to enable any marker to be ;moved from its operated or marking position to its normal position without causing said member to be moved to disengaged position.

The roller 70 is mounted insuitable relajtion to the platen roller 18, so as to be adapted to form a guide for the tape delivered from said platen roller; thedistanee between the rollers 18 andf7'0. being such as v to permit a desired length of tapebearinsl' farranged that .the stored ener v therein,

the signal record .to be exposed between said rollers.

Said roller is'mounted upongashaft 71, and is connected to the gear 7 2 (the pitch line of which is indicated by a dotted line in Fig.1), by a slack connection, consisting of a slot 73 and a pin 74: adapted to work therein, said slot being formed in the gear 72, and saidjpinbeing carried by the roller 70, or vice versa, as may be desired, so as toperm1t;.cons1derable relatlve movement between said gear and roller. V generally 75, is located below the roller70, and 1sv A governor train, indicated driven by gear 72, and is so constructed and when said train is running at "normal speed and the movement of the roller 70 -1s suddenly arrested, will cause said train to coin tinue torunv until there has been relative movement between the gear 72 and the roller 70ffor ardistance less than the permitted travel of the pin 74 in the slot 73;

Said relative movement should be suchthat, when the roller is again started, the tape andparts moving therewith will be per mitted to reach" at least full speed before said governor train is set in motion by the engagement of the end of theslot. with the pin 74.

In the interests of clearness of illustration,

vof the take-up "reel that the speed of tape 7 v movement will be practically constant. under all operative conditions. H

The shaft carries thetaperoll and the gear 82, driven by the main gear 83, acting by means of a suitable system of gear ing, through the intermediate shaft 84, the

pitch lines of the gears being shown by 1 dotted (lines. A suitable-motorspring, or other desired prime mover adapted toexert a substantially uniform torque, is so applied to the gear 83 as totend ,to turn said gear clockwise The torque exerted upon the gear 83 mustbe sufficient-to cause the tape '19, and 1' the "governor train 75, to be moved the desired. speed, when the tape roll "81 is of maximum diameter and the taperoll 12 is of minimum diameter, against the, application of such frictional retard to the pay-out reel as will, instantly absorb the momentum. of the pay-outreel andany tape roll thereon. It 1 is evident that, when a full. new roll oftape is placed upon the; pay-out reel' shaft 11, the advantage at which the propellingrnechanism acts, to {unwind the tape there.

.from, will be; increased on account; of the increased diameter of. said roll, and the pad 16 shoulditherefore be so positioned, with the follower 17 carried thereby, that said follower 17, being held at an increaseddis tance from thecenter of rotation of said shaft 11 by suchlarger tape'roll, will carry said pad 16 to .a position,;withrelation. to the disk 13, where the retardant effect of said pad will; bev increased to an extent which willv offset the increased advantage at relation to the pivot (15 of thearmll and I which said propelling-mechanism will then act. l I

In practice, whenever a new roll oftapeh is placed'on the pay-out reel shaft 11,thev

full roll of" used tape would be removed "from thetake-up reel shaft 80, and it is propelling-mechanism would thereupon act at; a further increased advantage on'account of the smaller radius a 125 a evident that j the o'f'thetap e rollon said takerupre'el, and" thepad 16 should therefore be so positionedthatthe follower 17 .will 'hold said pad at such an increased distance from the center of rotation-of the shaft, 11, when there is a V full roll of tape thereon, that the retardant effect of said pad 16 will be increased toan extent which will offset the increased advantage at which said propelling-mechanism Wlll act due both to the increased diameter of the roll 12 and to the decreased diameter of the roll 81.

Then, as the tape passesfrom roll 12 to roll 81, the follower should permit such movement of the pad 10 thatthe advantage at which the frictional retard of said pad is applied will so decrease as to offset the deat an extremely coarse pitch- (see Fig. 3),

so that a tracer point riding through the fine pitch thread 88 will be vmoved very.

slowly in a line parallel with the shaft 85 for any given rotation-of said shaft until said tracer reaches the slot 89, whereupon the rotation of such shaft 85 to a'very slight degree will move such tracer point a comparatively great distance in a -line parallel to said shaft. v V

' A detent lever 90 is pivoted at 91, and has the projection 92 formed therein, and carries the tracer 93 which is pivoted to said lever at 94, (see Fig. 2).

The tracer 93 is provided with a point 95, whichis adapted to engage with'the threads of the worm 87, and the actuating'pin 96 projects from one side of said tracer 93-, near the free end thereof.

The guide lever 97 is pivoted at 98 in suitable relationto the actuating pin 96, so

that the guide slot 99 may engage said pin and thereby control the engagement of the point 95 with the threads of the worm 8T.-

An arm 100, of the guide lever 97, is connected with one of the arms 66 by means of the rod-101, so that the movement of said arms 66 will cause corresponding movement of the'guide slot 99.

A detent arm 102 is carried by the detent :shaft 86 in such position as to be adapted to engage the projection 92 formed in the detent lever 90 when said lever is in a certain position, and the retractile spring 103 is applied to said detent lever 90 as to be adapted to move said lever out of engagement with the detent arm 102 and a suitable distance therefrom, the engaging faces of the projection 92 and detent'arm 102 being preferably slanted so that the pressure of the arm 102 against said projection 92 will moving ,said projection out of engagement with the arm 102. I I Y The relative positions of the worm 87, detent lever 90 and arm 102 are such that the movement of the detent lever 90 in response to the tensionof its retractile spring 103 causes the tracer point 95 to move away from the end of the worm 87 inwhichthe slot 89 is formed, and toward the oppositeend of said worm, and the threads of the worm 8'7 ,tend to suitably assist said. spring103 in V are so formed that the movement of the I shaft 85, incident to the rotation of the shaft to wind up the tape 19, will. be such that,

when the tracer point 95 is engaging thev threads of said worm, the detent lever 90 will be moved against the tension of thespring 103. i

-T he fine pitch threads 88 are so located as to. cause the detent lever 90 to be moved to a point where the projection 92 is adjacent to, but notin the path of the arm 102', and the, arm 102 is not in the path of said projection, whereupon, the movement of said point 95*through the slot 89, will so move said lever 90, as to bring a comparatively great area of the projection 92 into the path of said detent arm 1.02, during'the movement of said arm 102 from the point where the tracer point 95 is first engaged by the slot 89 untilsaid arm'102 .is brought, into contact with said projection 92.

An arm 105, forming part of a stop lever 104, projects in the path of the detent lever 90, said stop lever being loosely pi.voted upon the intermediate shaft 84. Said arm 105 of said lever is formed at an angle to its line of motion so that as said arm is rotated around its pivot 84, the permitted movement of the detent lever 90 in response 1 to its spring 103 will be varied.

An arm 1.06 of the lever 104 is provided with a roller 107, so positioned as to be adapted to ride upon the tape roll 81, a

spring 108 being so applied to the lever 104 as to tend to hold said roller in engagement with the tape roll 81.

The direction and degree of slant of the arm is such that, as the tape roll 81 increases in diameter, the movement imparted to lever 104 as a result of such increase, will carry the arm105 in a direction causing it to decrease the permitted travel of the lever 90 in response to its spring 103, so that as the rate of tape travel increases, in relation to V the rotation of the shaft 80, due to the in crease in diameter of the tape roll 81, the permitted travel of the detent lever'90 will decrease at such a rate that the lever 90 will always be carried, from engagement with the arm 105, to the position where it is engaged by the detentarm 102 upon a con stant predetermined travel of the record tape.

' dog 57 will be rotated on its pivot 58 to the The worm 87, detent lever 90 and parts associated therewith, therefore form a starting and stopping mechanism for the,take' up or propelling=mechanism adapted to act upon a constant predetermined travel of the tape after it is released by the recordingmechanism, said starting and stoppingmechanism being located below the exposed ciated mechanism.

The movement of the connecting rod 50,

in transmitting the motion of the armature 41 to the marker- 34, will first carry its associated projection 55 to the left, from the position shown in Fig. 4, so that the latch positionshown in Fig; 5 and thus raise the horizontallyextending arm of the lever 56 so as to cause the upper end of the arm 66 to swing toward the right.

The further movement of the projection 55 to the left, will bring said projection out from beneath the face 59 ofsaid latch dog 57,'and thus allow said lever 56 and arm 66 to-move nearly but not quite to theirnormal position. a

When the magnet 40 is deenergized, the armature 41 and marker 34 will return to normal position and the rojection will move to the right of the face 59, swinging the latch dog 57 out of the path of said rojection, as indicated by dotted lines'in ig. 5, and when said projection 55 reaches the position shown in Fig. 4, the horizontal arm of the lever 56 will drop slightly, bringing the projection. 60 against the top surface of the block 53, and thereby swinging the face 59 downwardly into thepath of said projection 55. v

The movement of the arm 66 hereinbefore described will be transmitted through the rod 101 to the guide lever 97, and, when said arm 66 is moved to the right, the guide slot 99 will be raised, thus disengaging the point 95, from the worm 97, whereupon the detent lever 90 will be moved by the spring 103 so as to carry the projection 92 out of the path of the detent arm 102, and tocarry the tracer 93 toward the end of the worm 87 farthest from the slot 89 until said detent lever 90 strikes the arm 105 of the stop lever 104,

/ 93' will be dropped by the guide slot 99 so that point 95 will engage the fine thread 88 of the worm 87. 7

Upon disengagement of the projection 92- from the detent arm 102, the shaft 80 will regulate the speed of movement of the tape 19, but it is evident that the first movement of said tape will be free from the retardant effect of said governor train,'and that said tape will therefore quickly attain full speed.

As the shaft is rotated to wind the tape 19 thereon, the worm 87'will be correspond" i ingly rotated and thus tend to move the point 95 in adirection which will carry the projection 92 toward the path of the detent arm 102, but it is evident that if the magnet 40 is repeatedly energized, the detent lever 90 will be permitted to move into engagement with the arm 105 upon eachmovement of the armature 41 to attracted position.

Whenever the arm 66 remains in its normal position for a suflicient time to permit such rotation of the worm 87 as will carry the point 95 into the slot 89, the detent lever 90 will be moved into the path of the detent .arm 102, and the take-up reel shaft 80 and parts moving therewith will thereupon be brought to rest. However, the governor train 75 will continue to run, after the tape 19 has come to rest, until the momentum of said train has been absorbed in the friction of the parts thereof, such additional movement of said train'being permitted bvthe slack connection between the slot 73 aiidthe pin 74. a e As the tape is wound upon the roll 81-, it is evident that the amount of tape wound thereon for a given angular motionof the shaft 80 will be increased as said roll in creases in diameter, and the engagement of the roller 107, with the periphery of said tape roll 81, will act to move the arm toward the detent lever 90 and thereby decrease the permitted movement of the point 95 away from the end of the worm 87 having the slot 89, so that the permitted angular motion of the shaft 80, after any' engagement of the point 95 with the worm 87 will. be correspondingly decreased, so as to wind up a predetermined constant amount of tape.

The engagement of the friction pad 16 with the friction disk 13 applies such retardant effect to the tape roll 12 at all times that, when the tape movement is suddenly arrested by the detent arm 102 coming into engagement with the projection 92, the modriven exclusively by said tape, and com=' mentum of the tape'roll'12 and; parts m-g tating therewith will be instantly'absorbed.

It is evident that when the tape roll 12 is at its minimum diameter, and the tape roll 81 is at its maximum diameter, the-energy supplied by the-main gear 83 will be applied increased as to compensate for the increased advantage at'which the energy of the main gear is then applied, As the diameter of the tape roll 12 decreases, the friction arm let will be so moved,'by the action of the disk 3 upon the pad 16, as to press the roller 17 against the periphery of said tape roll 12,

and thereby to decrease'the retardant effect of the friction pad 16 to correspond with the. decrease in the advantage at which the enery of the main gear is applied.

I claim: I 1. In a strip winder for a signal recorder, the combination of a record tape,-a pay-out reel and a take-up reel forthe tape, propelling mechanism for the tape, an intermediate roller over which the tape is passed during its traverse between said reels and by which the roller is driven, and a speedgoverning train for the tape associated with said roller. 1 1 U i 2, In a strip winder for a signal recorder,

the combination of a record tape, a pay-out.

reel and a take-up reel for the tape, p ropelling mechanism for the take-up reel, an intermediate roller over which, the tape 1s speed-go verning train for the tape associated with said roller.

3. In a strip winder for a signal recorder,

the combination of a record tape, a pay-out reel and a take-up reel for the tape, pro

pelling mechanism for the tape, an intermediate roller over which the tape is passed during its traverse between said reels and by which the roller is driven, and an energyabsorbing, speed-governing device for :the

tape driven by said'rolier.

. In a strip winder for a signal recorder,

record tape, speed propelling mechanism for said tape, and tape governor mechanism,

prising a governor-train, a roller adapted to be rotated by said ta e and a slack connection between said roller and said governing.

train wherebysaid governor-train is per-' mitted a restricted movement independent of said roller.

5. In a strip winder for a signal recorder, record tape, a pay-out reel for said tape, compensatingly variable friction mechanism for said pay-out reel, propelling mechanism for said tape comprising a power-driven take-up reel, and speed-governor mechanism driven exclusively by said tape and comprising aspeed-governing-train,. a roller adapted, to be rotated by said. tape, and a slack connection between said roller and said governing train whereby said governing-tra-inis permitted a restricted movement independent of said roller. v

6; In a strip winder for a signal recorder,

record tape, means for suitably propelling said tape, a pay-out reel for said tape, and

compensatingly variable friction mechanism for said pay-out reel comprising,-a friction disk moving with said pay-out reel, a friction pad bearing against said disk, a friction arm carrying said pad, and a follower carried by said arm and adapted toride upon the periphery of the tape roll upon the pay-out reel, to thereby move said arm and vary the friction in accordancewith'a variation of diameter of the tape roll.

7. In a strip winder for a signal recorder adapted for intermittent operation, the combination of a record tape, a pay-out reel and a-take-up reel for said tape, and means for winding a predetermined length of tape on said takeup reel at each operation of thev recorder comprising power-actuated driving mechanism for sand take-up reel, starting and stopping means for said driving mechanism, and governing means for said starting and stopping means governed by variation in diameter of thetape-roll on the take-up reel;

adapted for intermittent operation, the come bination of a record tape, a pay-out reel and,

a take-up reel for said tape, and means for winding a predetermined length of tape-on said takeup reel at each operation of the recorder comprising. power-actuated driving mechanism for said take-up reel, starting and stopping means for the driving mechanism arranged to provide for a maximumperiod of driving of the take-up'reel by the driving mechanism, and means actuated by the variation in diameter of the tape-rollon thetake-up reel "to govern the staitingand stopping mechanism to provide for a lesser period of driving of the take-up reel.

9. In a strip winder for asignal recorder,

8. In a strip winder for a signal recorder record tape,-1propellingmechanism for said tape comprising a power driven take-up reel, detent-mechanism comprising a detent adapted, when in one position, to engage and stop said propelling meohanism,fmeans for moving said detent away from such position,

and actuating-means, operated by the propelling mechanism, and adapted to move the detent toward engaging position, and variable stopping-means for limiting the extent of the movement of the detent away from engaging position whereby the actuatingmeans is enabled to return the detent mechanism to engaging position upon a predetermined travel of the record tape.

10. In a strip winder for a signal recorder, record tape, propelling mechanism for said tape comprising a power driven take-up reel, detent mechanism comprising a detent adapted, when in one position, to engage and stop said propelling mechanism, means for movingsaid detent away from said position, and actuating-means operated by the propelling mechanism adapted to move the detent toward engaging position, and variable stopping means vfor limiting the extent of the movement of said detent away'from engaging position whereby, as the diameter of said tape roll increases, the extent of the permitted movement of the detent, away from engaging position, will be correspondingly decreased.

- reel, detent mechanism comprising a detent adapted, when in one position, to engage and stop said propelling-mechanism, means for moving said detent away'from said position, and actuating-means operated by the propelling-mechanism adapted to move the detent towardengaging position, and variable stopping means for limiting the extent of the V movement of said detent away from engaging position comprising a stop arm so mounted-as to so move in relation to the periphery of the tape roll upon the take-up reel that, as the diameter of said tape rollincreases, the extent of the permitted movement of said detent away from engaging position will be correspondingly decreased.

'12. In a strip winder for a signal recorder, record tape propelling-mechanism for said tape comprising a power driven take-up reel, detent mechanism comprising a detent adapted, when in one position, to engage and stop said propelling-mechanism, means for moving said detent away from said position, and actuating-means operated by the propelling mechanism adapted to move said detent toward engaging position, and variable' stopping means for limiting the extent of the movement of said detent away from engaging position, so as toenable the actuating-mea-ns 'to'move said detent intoengagingposition upon a predetermined travel of the record tape, comprising a stop armso mounted as to so move in relation to the periphery of the tape roll upon the take-up tape comprising a power driven takeaip reel, detent mechanism comprising a detent adapt: 7

ed, when in one position, to engage andstop said propelling-mechanism, means for moving said detent away from said position, and actuating-means operated by the propellingmechanism adapted to move said detent toward engaging position, and variable stopping-means for limiting the extent of the movement of said detent away from engaging position,comprising a stop arm so mounted that its movement will alter the extent of the permitted movement of said detent away from engaging position, and a follower, riding upon the periphery of the tape roll upon the take-upreehand so moving said stop arm that, as the diameter of said tape roll increases, the'extent ofithe permitted movement of the detent away from engaging positionwill be correspondingly decreased. g a

14. In a strip winder for a signal recorder, record tape, propelling-mechanism for said tape comprising a power driven take-up reel, detent mechanism comprisingv a detent adapted, when in one position, to engage and stop said propelling-mechanism, means for moving said detent away from said position, and actuating-means operated by the pro pelling-mechanism adapted to move said detent toward engaging position, and variable.

stopping means for limiting the extentof the movement of said detent away from en gaging position, so as to enable the actuating-means to move the detent into engaging position upon a predetermined travel of the record tape, comprising a stop arm sosaid tape roll increases, the extent of the permitted movement of the detent away from engaging position will be correspond;

ingly decreased.

15; In a strlp wlnder for a signal re- 7' corder, record tape, propelling-mechanism for said tape, a detent for a comparatively fast moving part of said propelling-mechanism, means constantly tending to move said detent away from engaging position, actuating-means operated by a comparatively slow moving part of said propelling-mechanism and adapted to move said detent toward engaging position, means for disengaging said detent from the actuating-means therefor,

and variable stopping-means for limiting the extent of the movement of said detent away from engaging position. V

16. In a strip winder for a signal recorder, record tape, propelling-mechanism for said tape, and detent mechanism comprising,- a detent adapted, when in one position, to engage and stop said propelling-mechanism, means for moving said detent away from said position, and actuating-means, operated by the propelling mechanism, so arranged with relation to said detent as to slowly move said detent toward engaging position untilsaid detent is moved to a position comparatively near to engagement and thereafter to quickly move said detent into full engaging position.

" 17 In a strip winder for a signal recorder,

record tape, propellingmechanism for said tape, a detentarm carried by a comparatively fast moving part of said propellingmechanism, and detent mechanism comprising,a detent lever adapted to be moved into or out of the path of said detent arm, means for moving said detent lever out of the path of the detent arm, and actuatingmeans, operated by the propelling-mechanism, adapted to move the detent lever, at a time when the detent arm is not in the path of said lever, to a point Where said lever is near but not in the path of the detent arm, and thereupon to so move said lever as to bring a comparatively great area of said lever into the path of said detent arm before said arm is brought into engagement with said lever.

18. In a strip winder for a signal recorder, record tape, propelling-mechanism for said tape, and detent mechanism comprising,a detent adapt-ed, when in one position, to engage and stop said propelling-mechanism, means for moving said detent away from said position, and actuatingmeans operated by the propelling mechanism adapted to move said detent toward engaging position,

comprising a worm having two connecting threads of different pitches.

In testimony whereof,'I have signed my name to this specification in the presence of two subscribing witnesses.

HERMAN W. DOUGHTY.

Witnesses:

HARRY E. REED, MARION C. CASE.

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