US1309720A

US1309720A - Signal-recobdeb

Info

Publication number: US1309720A
Authority: US
Publication date: 1919-07-15
Anticipated expiration: 1936-07-15

Description

H. W. DOUGHTY.

SIGNAL RECORDER.

APPLICATION mm NOV, 30. m4.

Patented July 15, 1919.

- ynvron it: WITNESSES:

- a STATES PATENT OF HERMAN W. DOUGITY, OF IBINGHAMTON, NEW YORK, ASSIGNOR, BY MESNE ASSIGN- KENT-S, TO THE GAMEWELL FIRE ALABM TELEGRAPH COMPANY, A CORPORATION OF NEW YORK.

SIGNAL-RECORDER.

Specification of Letters Patent. Pate ted J uly 15,1919.

Application filed Noyember 30, 1914. Serial no. 874,782.

To all whom it may concern:

' Be it known that I, I'IERMAN WV. DOUGHTY, a citizen of the United States, residing at Binghamton, in the county of Broome and State of New York. have invented certain new and useful Improvements in Signal-Recorders, of which the following is a specification.

My invention relates particularly to that class of signal recorders, frequently referred to as multiple pen registers, in which a plurality of markers are provided, each having independent electromagnetic operating or controlling mechanism, together with propelling mechanism for feeding the tape or strip of material upon which the record is to be made. and self-starting and selfstopping mechanism for the propelling mechanism, subject to the joint control of said propelling mechanism and of the magnetic controlling or operating mechanism associated with the various markers.

Certain features of the invention here shown and described, but not claimed, are claimed in my application Serial No. 159,- 407. filed April 3rd, 1917.

The objects of this invention are as follows:

To provide a simple and compact form of self-contained recorder, including pay-out and take-up reels for the record tape, occupying but slightly greater space than that requirm'l for the expanse of tape which it is desired to have constantly exposed to view.

To provide such an improved self-starting and self-stopping mechanism for the propolling mechanism of a recorder, that said propelling mechanism will be permitted to start. and said starting and stopping mechanism will be adjusted to adapt it tb act to stop said propelling mechanism upon apredetermined tape travel, upon the movement of a marker from its normal to its operated position.

To provide such controlling means for the self-starting and self-stopping mechanism of a recorder that the movement of a marker from its operated to its normal position will not operatively affect such starting and stopping mechanism.

To so apply a self-starting and self-stopping mechanlsm to the take-up reel of a. recorder that said mechanism is adapted to act to stop said reel after a predetermined travel of .the exposed tape, re ardless of the size of the tape roll upon suc take-up reel.

.To provide a recorder arranged to operateat high speed and to expose a comparatively great length of tape between .the pay-out 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-up reel.

To provide a recorder having a pay-out and atake-up reel for the record tape, said take-up reel being supplied with suitable propelling mechanism and starting and stopping mechanism whereby its movement may he suddenly arrested, and said pay-out reel being supplied with a frictional retard sufficient to instantly absorb the momentum of said pay-out reel and any tape roll thereon,-1n which a uniform operating torque for said propelling mechanism may be utilized regardless of changes in diameter of the ta e rolls on the take-up and pay-out reels.

0 provide a recorder having a take-up reel and propelling mechanism for the record tape applied to said take-up reel,'togetherwith governor mechanism adapted to regulate the speed of linear movement of said tape regardless of the size of tape roll upon said take-up reel.

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 be practically constant under all operating conditions.

To provide a recorder having one or more markers, each of which has a marking surface the entire area of which normally rests against an inking ad and which entire area markers, in which the movement of any marker from the pad to the tape will have so called piano action, so that the tape will not be dragged across the marking surface, and the marks will not be blurred.

To provide a recorder having an inking pad which may be inserted in, or removed from, said recorder in a line substantially perpendicular to the line of movement of the markers without causing or permitting movement of said pad across the surface of said markers adapted to be brought in contact therewith.

To provide an inking pad for a recorder so mounted in an ink box that it may be completely submerged in the ink, and so that any ink splashed from the pad surface, when the markers are approaching or leaving the pad, will fall back upon said ad.

To provide an improved su stantially instantaneously acting circuit controller, adapted to be so operated by the entire force of a signaling mechanism that it will act in one direction only at the commencement of the movement of said mechanism, and in the other direction only at the completion of such movement.

Other objects are described in the. following specifications and more particularly pointed out in the claims.

In attaining the feature of this invention whereby but slightly greater space is occupied by a self-contained recorder including both pay-out and take-up reels than that required for the expanse of tape which it is desired to have constantly exposed to view,the pay-out and take-up reels and the governing and controlling mechanism therefor, as well as substantially all of the.

operating mechanism for the recorders, are grouped below said exposed portion of the record tape.

In attaining the features of this invention whereby the self-starting and selfstopping mechanism for the propelling mechanism of a recorder will permit the propelling mechanism to start and said selfstarting and self-stopping mechanism will be adjusted to adapt it to act to stop said propelling mechanism after a predetermined tape travel uponthe movement of a marker from its normal to its operated position, and whereby the movement of a marker from its operated to its normal position will not operatively afiect such starting and stopping mechanism,latch dogs are mounted in the paths of parts moving with the mechanism for each marker, and so arranged that, upon the movement of any marker from its normal position to its operated position, its latch dog will first be operatively engaged and then disengaged by such part, and so that, when any marker is returned to its normal position,no such operative engagement will occur, a connection being provided between the starting and stopping mechanism and said dog, or dogs, whereby said starting and stopping mechanism will be suitably influenced by the operative engagement of any dog with its associated part.

In attaining the feature of this invention whereby a self-starting and self-stopping mechanism is so applied to the take-up reel of a recorder that said mechanism is adapted to act to stop said reel upon a predetermined travel of the exposed tape, regardless of the size of the tape roll upon such take-up reel,starting andistopping mechanism is provided which is adapted to be operated by the running of the take-up reel to stop said reel, and a member is provided, the movement of which is governed by the diameter of the tape roll, said member being adapted to so control the self-starting and self-stopping mechanism that, as the rate of tape travel increases in relation to the rotation of the take-up reel, due to the increase in diameter of the tape roll, the permitted rotation of the take-up reel, after any release thereof, will be so decreased that said self-startin and self-stopping mechanism will be adpusted to act to stop said take-up reel when said reel has acted to wind up a predetermined length of said tape. I

In attaining the feature of this invention whereby,in a recorder which is arranged to operate at high speed and to expose a comparatively great length of tape between the pay-out reel and take-up reel, such tape may be almost instantaneously brought to full speed, Without leaving slack between the pay-out reel and take-up reel,a frictional retard is provided for the ay-out reel, propelling mechanism is suitably applied to the tape and governor mechanism is provided which is adapted to be driven by the tape so as to suitably regulate the speed of movement thereof, said governor" mechanism being so constructed and arranged that the storcd energy therein, when said mechanism is running at normal speed and the movement of the tape is suddenly arrested, will cause portions 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 least full speed, before said governor mechanism becomes effective in checking and regulating the speed of said tape.

In attaining the feature of this invention whereby a uniform operating torque may be utilized regardless of changes in diameter stopping mechanism whereby its movementmay be suddenl arrested, and said ay-outv reel being supp ied with a frictiona retard sufiicient to instantly absorb the momentum of said pay-out reel and any tape roll thereon, a member 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 appllcation of the frictional retard to the pay-out reel that, when the tape rollupon the take-up reel is 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 pay-out reel to instantly absorb the momentum of said tape roll which may placed thereon, and that when the tape roll upon the take-up reel is at its minimum diameter and the tape roll upon the pay-out reelis at its maximum diameter, (the torque of the propelling mechanism being then applied in rotating the pay-out reel at much greater advantage than when the conditions of said tape rolls are reversed) sufficient frictional retard will be applied to said pay-out reel so that the torque of the pro elling 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'take-up reel increases, and the diameter of the tape roll upon the pay-out reel decreases, said frictional retard Wlll be applied to said pay-out reel at an advantage which decreases correspondingly tothe decrease in advantage at which the torque of said propelling mechanism acts upon the pay out reel due to such change in the diameter of said rolls. 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 movement of said tape regardless of the size of the tape 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 movement of said tape.

In attaining the feature of this invention whereby, in a recorder having record tape propelled by a take-up reel, from a frictionally retarded pay-out reel, in which the speedof movement of the exposed portion of such tape will be practically constant under all operating conditions, -a governor mechanism is provided which is driven directly by the tape, said governor mechanism pity-out reel and any being arranged to absorb so large a proportion of the propelling'force of the take-u reel that the speed of tape movement wil l be practically constant under all operating conditions.

In attaming the feature of this invention whereby, in a recorder having markers, the entire markin area of which normally rests against an in ing pad, and which entire area is adapted to be brought into contact with the tape, in which the movement of such marker, when brought into. contact with j either the tape or the pad, will be in, a direction substantially perpendicular to the surface of such tape or pad at the place of contact,a pivoted guide for said marker is mounted at a suitable distance from the portion of the tape upon which records are to be made, an inking pad is mounted below said guide, and an operating lever is suitably connected to said marker, said lever being mounted upon a pivot so located that the movement of said marker when brought into contact either with the inking pad or with the tape willbe in a direction substantially perpendicular to the surface of said pad, and also to the surface of said portion of the tape.

In attaining the feature of this invention whereby the movement of'any marker of a recorder from its inking pad to the record tape willhave so called piano action, controlling or operating mechanism for each marker is provided, the movement of which is restricted between certain definite limits,

and such controlling or operating, mechanism is so connected with said marker that the permitted movement of such mechanism is insufficient to positively move the marker into contact with the tape, lost motion being provided in the connection between said controlling or operating mechanism and the marker, said mechanism being arranged to exert such degree of force, in moving said marker, as to impart to said marker and cer tain parts moving therewith momentum sufficient to bring the marker into contact with the tape with suitable force, gravity, preferably aided by a suitable retractile spring, being employed for the purposeof quickly withdrawing the marker from c'on tact with the tape for such distance as is permitted by said lost motion.

In attaining the feature of this invention whereby the inking pad of a recorder may be inserted in, or removed from, said recorder in a line substantially perpendicular to the line of movement of the markers without causing or permitting movement of said pad across the surfaces of said markers adapted to be brought in contact therewith,a stop is provided in the ath of a part moving with each marker for imiting the extent of the movement of Ill said marker in the direction of the pad, and the pad is connected to a slidable base plate, by means of parallel links, portions of the frame of such recorder being arranged in the path of parts moving with said pad for the purpose of guiding same when it is being placed in or moved from its normal position so that said pad will move only in a line lwrpemlicular to its surface when moved through any part of the range of travel of said marker, and whereby said pad is permitted to move in a line substantially perpendicular to the line of movement of the markers when not in the range of motion of said markers.

In attaining the feature of this invention whereby the inking pad of a recorder may be so mounted in an ink box that it may be completely submerged in. the ink, and so that any ink splashed from the pad surface, when the markers are approaching or leaving the pad, will fall back upon said .pad, an inking pad is mounted in a suitable ink box. having sides which extend above the top of the pad, a suitable splash plate being applied. around the portion of the surface of said pad with which the markers may be.-

brought into contact, and a suitable distance above said surface.

In attaining the feature of this invention whereby a signaling mechanism may impart ,a substantially instantaneous action to a cirr of the signaling mechanism is so 'pivoted upon this arm that the thrust applied to such member, when it is engaged by a moving part of the signaling mechanism for the purpose of arresting the movement of said mechanism will move the switch arm in one direction, and a spring or other suitable means is provided for moving said arm in the opposite direction when such thrust is not applied thereto. i

From the foregoing it is apparent that this invention is capable of various differing embodiments, including the addition or omission of many parts, and that features of this invention are adapted for use with various recorders, either separately or in combination with each other, and the particular construction, arrangement and operation of parts shown in the accompanying drawings, and hereinafter described,

are merely given with a view of enabling this invention to be better understood and not as a limitation to in claims.

Like characters of re erence denote similar parts throughout the accompanying drawings, in which:

Figure 1 is a side elevation of a multiple pen register embodying this invention.

Fig. 2 is an enlarged diagrammatic partial section of the starting and stopping mechanism, taken through the line 22 of Fig. 1.

Fig. 3 is an enlarged diagrammatic partial section of the starting and stopping mechanism, taken through the line 3-3 of Fi 1.

Fig. 4 is an enlarged view of the controlling means for the stopping mechanism, shown in normal position.

Fig. 5 is a view of the parts shown in Fig. 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. 1.

Fig. "(is an enlarged view of one of the .markers and certain parts associated there with. 1

Fig. 8 is an enlarged side elevation of th ink box and its supporting structure, shown in normal position, taken on the line 8-8 of Fig. 1.

Fig. 9 is a View of the ink boX shown in Fig. 8, withdrawn from the markers.

Fig. 10 is a detail to be referred to.

Referring to Fig. l, 11 is the pay-out reel shaft, to which the tape roll 12 is attached, and upon which the friction disk 13 is fixed.

The friction arm 14, pivoted at 15, carries the friction pad 16, and is mounted in such position, with relation to the friction disk 13, that the movement of said arm will cause said ad to bear against said disk at differing distances from the center of said disk, and that the movement imparted to said disk by the rotation of the tape roll in paying out the record tape will, through the engagement of the pad 16 with said disk, tend to so move said arm as to bring said pad toward the center of said disk. The retardant effect of said pad 16 must at all times be sufiicient 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 periphery of said tape roll, and'thereby regulate the movement of the friction arm toward the center of the friction disk, for a purpose to be. hereinafter more fully explained.

Said parts therefore form a pay-out reel platen for suitable markers.

The location ofv the platen roller 18 is somewhat above and to one side of the tape roll 12, and the tape 19'is drawn around from the direction said roller 18 and is drawn awa upper'face of said roller insuc as to pass above the pay-out'reel.

. ment with the The pivoted guide 20 (see also Fig. 7) is mounted a suitable distance from the roller 18 at the side of said roller over which the tape 19 is drawn.. An inking pad 21 is mounted below the pivoted guide 20, said pad being contained in the ink box 22.

The sides of the ink box 22 extend above the top of the inking pad 21', and a. splash plate 23 is provided in said ink box, somewhat above the top of the pad 21. Anopening 24 is provided in the plate 23 through which ink may be introduced into the ink box 22, and an opening 25 is also provided therein above the pad 21. l g

The upwardly extending flanges 26, formed on or applied to the splash p ate 23 around the opening 25, are of such form that when a marker is brought violent contact with the surface of the pad 21, or

suddenly withdrawn therefrom, anyink thrown from said surface will be caught by this splash plate and returned to the pad 21.

The parallel links 27 (see Figs. 8 and 9) are secured to the ink box 22 at the pivots 28, and to the slidable base plate '29 at the pivots 30, I a

A guide roller 31 is provided near one end of the ink box 22, and is so positioned that it may engage with a portion32 of they the i'nk I box 22 when itis being placed in or reframe, for the purpose of guiding moved from its normal position.

A projection 33 from a part of the frame extends to a position where it lies'in the.

path of one of the links 27, so as to limit the movement of the ink box 22 in the direction which will carr the roller 31 out ofengagefi'ame, when the ink box is in certain positions.

The construction of the base plate 29, and the correlation of the links 27 therewith and with the ink box 22, is such that when the ink box is in normal position, as shown in Fig. 8, the withdrawal of the base plate 29 will swing the links 27 to the positionv shown in Fig. 9, and thereby permit the ink box 22 to move, in response to gravity, in a direction p?rpendicular to the surface of the pad 21, until said ink box 22 rests upon said base plate 29. Upon farthermovement 31 will its inking) engaged padg-when moved toward or away from norsaid base plate will draw the ink box 22 therewlth, thereby enabling said ink box to be'removed from the/recorder. When said ink box is resting .u'pon vthe base plate, as

shown in Fig. 9 and said box and'plate are bein inserted in the register, the roller e brought into contact with the frame, and thereafter the further movement of the base plate 29 will raise the ink box 22, in a line perpendicular to the. surface of the pad 21, and when said base plate 29 is brought, against the portion 32 of the frame, the links 27 will be swung slightly beyond a vertical position, so that the Wei ht of'the ink box 22 will tend to hold the ase plate 29'aga1nst said portion 32. 1

Said parts therefore compriseaninkin pad adapted to be inserted in or remove from, said, recorder in a line substantially perpendicular to the line of movement of the markers, and so constructed and mounted that, when said pad is in normal position,

surface will be'in position to be y said markers, and so that said mal position, will move only in afline substantially perpendicular to the surface of range of travel of said markers.

marking surface 35, "has extending t ere from the extension or rod 36, which is slidthe pad 21 or the roller,18 without disengaging said rod from said guide.

The marker 34. (seeFig. 7) having1 the such markers while said pad is within the I The arrangement of the extensionof the marker 34 in the pivoted fulcrum block 20 is such that the marker, with its extension 36, is free .forangular movement about the pivot or axis of said fulcrum block 20, in

which case said marker and extension move in unison, and also for longitudinal or sliding movement relative to said fulcrum block.

he operating lever'37, pivoted at 38, is

secured to the marker 34 at the pivot 39 carried by the longer ar'm of said lever, the locationof the pivot 39 being such that the movement of the marker'when brou ht into contact either with -'the inking a 21 or with the-platen roller '18 will be ina direcv tionsubstantially perpendicular to the sur- I face of the pad or roller at the contact. V The relation of the operating lever 37, the platen roller 18, and inking pad 21 is such that said roller and pad are substantially in the path of movement of the pivotal connection of' said operating lever with the marker 34, and at substantially the ends of a quadrant swept by said lever whereby said roller and pad are approximately tangential to thearc traced by the pivotal connection 39 placev of of said operating-lever with the marker. The pivoted fulcrum block 20 may be lo cated at the intersection of the tangents to the are at the extremities thereof and, in such position, and in conjunction with said operating lever, serves to guide the marking face 35 of said-marker'into substantially perpendicular contact with the platen roller andthe inking pad.

The operating lever 37 and'the marker 34 are so proportioned that their weight acts in a direction constantly tending to carry said marker away from the laten roller 18 and into contact with the in ing pad 21.

The stop 51 is mounted in the path of the operating lever 37 in such position as to restrict the permitted movement of the marker 34 in following the inking pad 21 when said pad is moved out ofengagement with said marker.

- The electromagnet 40 is suitably mounted below the exposed portion of the record tape 19, and an armature 41 is supported on a pivot 42 in suitable relation to said ma net.

he. actuating arm- 43 is secured to the armature 41 and moves therewith, said arm being provided at its lower extremity with the hook 44 (see Fig. 10).

The stop 45 is mounted in'the path of movement of the armature 41 and thereby acts to limit the travel of said armature 41 away from the magnet 40.-

Near the end of the short arm of the operating lever 37, a slot 46 is formedin said arm, and at a suitable point, near the intersection of perpendicular lines tangent to the are of travel of this slot and of the hook 44,- a bell crank 47 is pivoted at 48, one

-arm of said, bell crank being connected to the slot 46 b' the connecting rod 49, and the I other arm 0 said bell crank being connected to the hook 44 by means of the connecting rod 50.

The magnet 40, its armature, and the structure connecting same with the marker 34, therefore form magnetically controlled operating mechanism, which is adapted, upon energization of said electromagnet, to rapidly move the marker 34 out 6f contact with the inking pad 21 and toward the platen roller 18, but the permitted movement of the armature, between the stop 45 and the poles of themagnet 40, is insuiiicient to move the pivot 39 far enough to positively move the marker 34 into contact with the laten roller 18. I

The pu l. of the magnet 40 is sufiicient to impart such movement to the marker 34,

lever 37, bell crank 47 and

rods

49 and 50, that they will act in a manner similar to that of a piano action, so that when the movement of the armature 41 is arrested by the poles of the magnet 40, the momentum 'quic for holding it more firmly in contact with I ter against the the inking pad 21 if the weight of these "parts is not sufficient for that purpose, and

the use of such a spring will also act to climinate any tendency of the marker 34 to chatlaten roller 18 when the armature 41 is ield in attracted position, after the marker 34 has been brought against said platen.

With the construction shown, a reasonable amount of chattering will not affect the record, as the platen roller 18 is of such small diameter that when the marking surface 35 is tangent to the circumference of said roller, only a'limitcd portion of said marking surface will be in contact with the record tape.

- Owin to the elastically yielding character 0 said platen roller, the force of the impact, due to the normal movement of the marker 34 from the inking pad 21 to said platenroller 18, is suflicient to dent the surface'of said roller at the place of contact to an extent which will bring the entire marking surface 35 into contact with the record tape 19 upon said roller.

The marker 34 should be so positioned with relation to said roller, that the marking surface 35 will first come in contact with said roller at the upper edge thereof, that is, the edge toward the direction of tape travel, so that even if the tape moves along slightly between successive blows due to chattering, the denting of the roller due to each succeeding blow will be very small com- 'into contact with the roller 18, the upper edge of said marking surface should be brought into contact with said roller at a point not higher than a line between the center of movement of the pivoted guide 20 and the center of said roller.

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 magnets 10', etc., and as the parts corresponding to those already described are alike for all of said markers and their associated controllin mechanism, but

one marker and magnetic controlling or operating mechanism thereforhave been described.

The block 53 is attached to the connecting rod 50and is adapted to slide over the support54.

The actuating pin or projection 55 1s carried by the bloclc53, and extends a suitable distance therefrom.

ln a multiple pen recorder, it is evident that there will be a corres onding block carrying a similar PIOjGCtIOII' associated with each of 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 to the line of travel (if its associated projection 55.-

Near the free end of each of such arms,

a latch dog 57 is pivoted at 58, each of said dogs having a face 59 adapted to be engaged by its associated projection 55, and also having a rojection 60 so located as to be adapted toe brought into contact with the block 53 by'the movement of the lever 56 toward said block for the purposeofswinging said latch dog to a position which will ring the face 59 in the path of the projection 55.

A notch 61 is formed in each of the dogs 57 and each lever 56 carries a limit pin 62, positioned within the walls of this notch to thereby prevent such movement of the dog 57 as would carry the face '59 out of proper working relation with the projection 55.

. The individual levers 56, associated w1th the various recordin mechanisms, are loosely pivoted upont e shaft 63, so as to be capable of independent movement thereon, and each of said leverfinis provided with an upwardly extending ar 6 1.

A bar 65 is mounted in .the path of all of. the arms 64, said bar being supported between two arms 66 (as shown more clearly in Fig. 6), said arms 66 being adapted to be connected to suitable controlling mechanism for such feeding mechanism 'as is provided for propelling the. record tape, so that when any of the markers of the recording mechanism are actuated from normal position, the. latch dog 57 willswing on its].

pivot 58 from the position shown in Fig. 4, as the rojection 55 moves beneath said pivot, and thereby transmit movement to the associated individual lever 56, which will, in turn, through the engagement of its arm 64 with the bar 65, swing the arms 66 on their shaft. 9

As shown, the arms 66 are not 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 supportmg both the arms 66 and the levers 56.

As the block 53 is moved from right to leftand its projection 55 swings the latch dog 57 from the position shown in Fig. 4 to the position shown in Fig. 5, a side of the 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 further movement of said block 53 will bring the projection 55 to theleft of the face 59,, and thus permit 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 passto the right of the face 59, without materially moving its associatedindividual lever 56 (seedotted lines Fig. 5). The further movement of said block 53 toward the right will permit the latch dog 57 to drop to the left of the projection 55, and the weight of the arm o f the lever 56 will cause it to fall to the position where the engagement of the projection 60.with the surface of the block 53 will swing the face 59 into the path of the projection55, as shown in Fig. 4.

The bar 65, arms 66, levers, 56, dogs 57, andprojections 55 therefore. form con trolling means; operated by the recording mechanism, and adapted to move a member of a starting .and stopping mechanism to disengaged position during theactuation of any marker. from its normal position to its operated 'osition, and adapted to permit such mem or to move to engaged position before the completion of such actuation of said marker, and further adapted to enable any marker to be moved from its operated or marking pos tion to its normal position without causing said member to be moved to disengaged position. 1

The roller 7 O is mounted in suitable relation to the platen roller 18, so as to be adapted to form a guide for the tape delivered from said platen roller; the distance between the

rollers

18 and 70 being such as to permit a desired length of tape bearing the signal record to be exposed between said rollers.

Said roller 70 is mounted upon a shaft 71, and is connected to the gear 72 (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 said pin being carried by the roller 70, or vice versa, as may be desired, so as to permit considerable relative movement between said gear and roller."

A governor train, indicated generally at 75, is located below the roller 70, and is driven by gear 7 2, and is so constructed and I ted to reach at least full speed before said governor train is set in motion by the engagement of the end of the slot 73 with the pin 74. I

In the interests of clearness of illustration, the governor train 75 is diagrammatically shown as being controlled by a typical fiy or fan, but in practice it will, in many instances, be found preferable to emplo a friction governor, so arranged that the riction will not become effective until substantially the normal speed of the train has been attained, and in any event said governor train should be arranged to absorb so large a roportion of the propelling force of the ta ze-up reel that the speed of tape movement will be practically constant under all operative conditions.

The shaft 80 carries the tape roll 81 and the gear 82', driven by the main gear 83, acting by means of a suitable system of gearing, through the intermediate shaft 84, the pitch lines of the ears being shown by dotted lines. A suita le motor spring, or other desired prime mover adapted to exert a substantially uniform torque, is so applied to the gear 83 as to tend to turn said gear clockwise. The torque exerted upon the gear 83 must be sufficient to cause the tape 19, and the governor train to be moved at the desired speed, when the tape roll 81 is of maximum diameter and the tape roll 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-out reel and any tape roll thereon.

It is evident that, when a full new roll of tape is placed upon the pay-out reel shaft 11, the advantage at which the propelling mechanism acts, to unwind thetape therefrom, will be increased on account of the increased diameter of said roll, and the pad 16 should therefore be so positioned, with relation to the pivot 15 of the arm 14 and the follower 17 carried thereby, that said follower 17, being held at an increased distance from the center of rotation of said shaft 11 by such larger tape roll, will hold said pad 16 in such position, with relation to the disk 13, that the retardant effect of said pad will be increased'to an extent which will offset the increased advantage at which said propelling mechanism will then act.

In practice, whenever a new roll of ta e is placed on the pay-out reel shaft 11, t e full roll of used tape would be removed from the take-up reel shaft 80, and it is evident that the propelling mechanism would thereupon act at a further increased advantage on account of the smaller radius of the tape roll on said take-up reel, and the pad 16 should therefore be so positioned that the follower 17 will hold said pad. at such an increased distance from the center of rotation of the shaft 11, when there is a full roll of ta e thereon, that the retardant effect of said pad 16 will be increased to an extent which will offset the increased advantage at which said propelling mechanism will act due both to the increased diameter of the roll 12 and to the decreased diameter of the roll 81.

Then, as the tape passes from roll 12 to roll 81, the follower should permit such movement of the pad 16 that the advantage at which the frictional retard of said pad is applied will so decrease as to offset the decrease in the advantage at which said propellin mechanism acts.

Sai shaft and the gearing associated therewith therefore constitute a take-up reel and pro elling mechanism therefor located below t e exposed portion of the record tape.

A comparatively slow moving worm shaft 85 is geared to the intermediate shaft 84, and a comparatively fast moving shaft 86 is geared to the worm shaft 85. The worm 87 is fixed upon the shaft 85, and has a screw thread 88 of comparatively fine pitch terminating at one end in a slot 89 formed at an extremely coarse pitch (see Fig. 3), so that a tracer point riding through the fine pitch thread 88 will be moved 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 avery slight degree will move such tracer point a comparatively great distance in a line parallel to said shaft.

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, which is 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 relation to the actuating pin 96, so that the guide slot 99 may engage said pin and thereby control the engagement of the point with the threads of the worm 87.

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. e

.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 thed etent lever 90 when said lever is'in a certain position, and the retractile spring 103 is so ,asplied to said detent lever 90 as to be apted to move said lever out ,of engagebeing sure 0 the arm 102 against said projection 92 will tend to suitably assist sald spring 103 in moving said projection out of en- 3 ga ement with the arm102.

the shaft 80 to wind up the tape 19, willbe 7 he relative positions ofthe worm 87, detent lever 90 and arm 102 are such that the movement of the detent lever '90 in response to the tension of its retractil'e spring 103 causes the tracer point95 to move away from the end of the worm 87 in which the slot 89 is formed, and toward the opposite end ofsaid worm, and the threads of the Worm 87 are so formed that the movement of the shaft 85, incident to the rotation of such that, when the tracer point 95 is engaging the threads of said worm, the detent lever 90 will be moved against the tension of the spring 103. v a v The fine pitch threads 88 are so located as 1' to cause the detent lever 90 to be moved to a point where the projection 92 is adjacent to, but not in the path of the arm 102, and

the arm 102 is not in the path of said projection, whereupon, the movement ofsaid point 95 through the slot 89, will so move 40 great area of the projection 92 into the path said lever 90, as to bring a comparatively of said detentarm 102, during the'movement of saidv arm. 102 from the point where the tracer point 95 is first engaged by the slot 89 until said arm 102 is brought into contact with said projection 92.

An arm 105, forming part of a stoplever 104, projects. in the path of the detent lever 90, said stop lever being loosely pivoted upon the intermediate shaft 84. Said arm 105 of said lever is formed at an angle to its line of motion so thatvas said arm is rotated around its pivot 84, the permitted movement of the detent lever 90 inresponse to its-spring 103 will be varied;

An arm 106 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 bein so applied to. the lever. 104

as to tend to old said roller in engage ment with the tape roll 81. The direction and degree of slant of the arm 105 is such thatfas the tape roll 81 increases in diameter, the movement thereby tent lever 90.

\' imparted to lever 104 will carry the arm 105 in a direction causing it to decrease the permitted travel of the lever 90 in res onse to its spring 103, so that as the rate 0 tape travel ncreases, in relation to the rotation of the shaft 80, due to the increasevin diam eter of the tape roll 81, the ermitted travel of the detent lever 90 will ecrease at such a rate that the'lever 90 will always be carried, engagement with the arm 105, to theposltion where it is engaged by the detent arm 102 upon a constant predetermined travelof the record tape.

' The worm 87 detent lever 90 and parts associated therewith, therefore form a start 'ingand stopping mechanism for the takeup or propelling mechanism adapted toact upon a constant predetermined travel of the tape after it is released by the record-i ing mechanism, said starting and stopping mechanism being located below the exposed portion of the record tape 19.

A switch arm 109 is pivoted at 110, in suitable relation to the detent lever 90, so that the pivot 91 of vsaid detent lever may be located on this switch arm and said lever is thusenabled to move this switch arm whenever the detent arm 102 is brought into engagement therewith.

. stop 111 is mounted, in the path of the switch arm 109, in such position as to limit the movement which may be imparted to said switch arm by the thrust of the arm 102 against the projection 92 formed in the de- A movable contact 112 is carried by the switch arm 109, and the stationary contacts 113 are mounted in the path of said movable contact 112 in such position that, when the switch'arm 109 is resting against the stop 111, the movable contact 112 will be a suitable .distance away from the stationarycontacts 113,, and the spring 114 is so applied to the switch arm 109 that, when the detent arm 102 is not engaged by the projection 92 formed in the detent lever 90, said spring will bring the movable contact 112 into connection with both of the stationary 'contacts 113, and thereby operate any suitable signal, as for instance the signal lamp 115, which may be lighted from the current source 116, shown diagrammatically connected therewith.

tact with the stop 111 to the position where "the movable contact 112 will connect the stationary contacts 113, will be extremely slight, and will not affect the proper operation of the detent lever 90 and parts associated therewith. The grouping of the pay-out reel, the

take-up reel and the propelling mechanism, the self-starting and self-stopping mechanism, and the controlling. means therefor, as well as the governor mechanism, below the exposed portion of the record tape 19 enables this recorder to be constructed w1th1n a space which is but slightly greater than that required for the expanse 0 tape WhlCh it is desired to have constantly exposed.

When the recorder is at rest in normal condition, the various parts are in the POSI- tion shown in Fig. 1, and the ink box 22 is filled with ink to a point which brings the ink level slightly above the top of the inking pad 21. Y

lows: k

If the magnet 40 is suitably energized, the

armature 41 will move against the poles of said magnet, and such movement ,7 of said armature will be transmitted to the marker 34 associated therewith.

During this movement of the marker 34,

said marker and parts moving therewith will be moved from normal position (see solid lines Fig. 7), and will acquire suflicient momentum so that, when the movement of the armature 41 is arrested by coming into contact with the magnet poles, said marker and parts will continue mov- 'ing until said marker strikes the tape 19 (see dotted lines Fig. 7).

The movement of the marker, from the point where the travel of the armature 41 is arrested, to..the point where it strikes the tape 19, is permitted by the lost motion provided for at the hook 44 (see Fig. 10) and the slot 46 (see Fig. 7).

When said marker thus strikes the tape it will dent said ta e into the elastically ylelding surface of t e platen roller 18 so that the entire marking surface 35 of said marker will be brought into contact with said tape, and thereupon the spring 52 will withdraw said marker from contact with the tape to the extent permitted by said lost motion.

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 dog 57 will berotated on its pivot 58 to the position shown in Fig. 5 and thus raise.

The operation of thisfrecorder is as folmove to the right of the face 59, swinging the latch dog 57 out of'the path of said roection, as indicated by dotted lines in ig.

5, and when said pro ection 55 reaches the posltion 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 the path of said projection 55.

The movement of the arm 66 hereinbefore described will be transmitted through the rod 101 to the guide lever 97, and, when said 93 toward the end of the Worm 87 fartherest from the slot 89 until said detent lever 90 strikes the arm 105 of the stop lever 104, and, when said arm 66 is moved nearly but not uite to its normal position, the tracer' 93 will e dropped by the guide slot 99 so that point 95 will engage the fine thread 88- of the worm 87.

Upon the disengagement of the projection 92 from the detent arm 102, the shaft 80 will commence to turn in response to the driving force of gear 83, and will thereb commence winding the tape 19 upon the ro l 81.

The movement of the tape 19 will be imparted to the roller 70, and said roller will bring the pin 74 into engagement with the end of the slot 73 in gear 72, and thereafter the continued movement of the tape 19 will 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 ermitted to move into engagement with tli of the armature 41 toattracted position.

Whenever the arm 66 remains in its normal position for a sufficient 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 movee arm' 105 upon each movement thereon for a iven angular motion of theshaft 80 will 1 e increased as said roll increases in diameter, and the engagement of the roller 107, with the periphery of said tape roll 81, will act to move the arm 105" 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 redetermined constant amount of tape.

hen the projection 92 is engaged by the detent arm 102, the thrust of said arm will be transmitted through said lever to the switch arm 109, and thereby hold said arm against its stop 111, against the tension of its spring 114. Whenever projection 92 is disengaged from the detent arm 102, the spring 114 will act to move the switch arm .109 so as to carry the movable contact 112 into engagement with the stationary contacts 113.

Thereafter, when the detent arm 102 again engages the projection 92, the thrust of said detent arm will move the switch arm 109 in the opposite direction and quickly carry the movable contact 112 out of engagement with the stationary contacts 113.

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 momentum of the tape roll 12 and parts rotatin therewith will be instantly absorbed.

[t 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 to unwindlng the tape from roll 12 at a maximum disadvantage, and the driving power of said gear 83 must then be suflicient to overcome said friction.

On the other hand, when the tape roll 12 is at its maximum diameter, "and the tape roll 81 is at its minimum diameter, the energy of said gear 83 will be'applied at much greater advantage, and the tape roll 12 will hold the roller 17 in such position as to bring the pad 16 to a point, with relation to the disk 13, where its retardant effect will be so increased as to compensate forthe increased, advantage at which the energy ofthe main gear is then applied. As the diameter of th tape roll' 12 decreases, the friction arm 14- Will be so moved, by the action of the disk 13 upon the pad 16, as to press the roller 17 against the peri hery of said tape roll 12, and thereby to ecrease the retardant effect of the friction pad 16 to correspond with the decrease in the advantage at which the energy of the main gear is applied.

The ink box 22 should be kept filled with ink up to and preferably slightly above the top of the inking pad 21 and it is evident that any splashing of ink, incident to the -marker 34 being brought into contact with or moved away from said pad 21, will not result in ink being thrown on other parts of the mechanism, as such splashed ink will be stopped by the splash plate 23, and the flange 26 carried thereby, and returned to the ink box 22.

The foregoing description has been confined to the operation of the marker and mechanism associated with the magnet 40, as the operation of corresponding parts associated with the magnet 40, etc., in marking the tape and in controlling the arm 66, is the same.

When it is desired to remove the ink box 22 from the recorder, the projecting end of the slidable base plate 29 is grasped, and

said plate is moved from the position shown I in Fig. 8 to the position shown in Fig. 9, thereby permitting the ink box 22 to move downwardly, carrying the pad 21 out of en gagement with all markers which were in contact therewith.

So long as the upper end of the left hand link 27, as shown 1n Fig. 8, is above the.

lower surface of the projection 33, it is evident that the ink box 22 will not be permitted to move in a direction parallel to the surface of the inking pad 21, or to the marking surfaces 35 in contact therewith, but when the ink box 22 has been lowered to the position shown in Fig.9, the'links 27 are carried below the lower surface of the projection 33, and therefore, further movement of the plate 29 to the left will withdraw the ink box 22 from the recorder.

When it is desired to return the ink box 22 to its normal position, ihe parts are placed in the position shown in Fig. 9, and the guide roller 31, upon comin into contact with the portion 32 of the frame, will stop the horizontal movement of the ink box 22, and thereupon the further movement of the base plate 29 to the right, will raise the ink box 22 into its normal position, as shown in Fig. 8, and as the base plate 29 is moved into contact with the portion 32 of the frame, it will carry the lower ends of the links 27 slightly to the rightof the upper ends of'said links, thus so disposing said parts that the weight of the ink box 22 will tend to hold said base plate 29 in its normal position against the portion 32 of the frame.

what I claim and desire to secure by Letters Patent of the United States is:

1. In a signal recorder, a record tape, propelling mechanism therefor, a platen around which said tape is drawn, an inking pad, a pivoted fulcrum block, a marker having an extension arranged in said fulcrum block for relative sliding movement therewith, said marker and block being arranged for conjoint angular movement about the pivot of said fulcrum block, and an operating lever pivotally connected with said marker, said operating lever and pivoted fulcrum block serving to guide said marker into substantially perpendicular contact with the surface of said pad and the tape at the platen. v 2. In a signal recorder, a record tape, propelling-mechanism therefor, a platen, a marker for said tape having an extension, a pivoted fulcrum block in which said extension is arranged for angular movement together with said block about its pivot, and for relative sliding movement therewith, located in front of the platen, an inking pad located below said pivoted fulcrum block, and a pivoted operating-lever pivotally connected to said marker remote from the guide-block, said operating lever and fulcrum block serving to guide the marker successively into contact with the inking pad and the tape in a direction substantially perpendicular to the surface of said pad and tape at the place of contact.

3. In a signal recorder, record tape, pro: pelling-mechanism therefor, a marking bar for said tape, a pivoted fulcrum block in which said bar is arranged for angular movement together with said block about its pivot, and for relative sliding movement therewith, an inking pad, a pivoted operating-lever connected to said marking bar and adapted to angularly move saidmarking bar so that the marking surface of said bar may be brought into contact with either the inking pad or the tape, and in a direction substantially perpendicular to the surface of said pad or tape at the place of contact.

4. In a signal recorder, record tape, propelling-mechanism therefor, a platen roller around which said tape is drawn, a pivoted fulcrum block, an inking pad, a marking bar arranged in said pivoted fulcrum block for angular movement together with said block about its pivot, and for relative sliding movement therewith, a pivoted operating-lever connected to said marking bar adapted to angularly move said bar about the pivot of said fulcrum block into alternate contact with said tape and said inking pad, and electro-responsive means to move said lever on its pivot.

5. In a signal recorder, record tape, propelling-mechanism adapted to impart a continuous lineal movement to said tape, a supply of unused tape, a platen roller mounted above said supply and around and above which said tape is drawn, a marking bar for said tape, a pivoted fulcrum block in which said marking bar is arranged for conjoint angular movement with'said block about the pivot thereof, and for relative sliding movement therewith, and an operatinglever connected with the marking bar, to guide the marking surface of said bar so that it will form a downwardly directed tangent to the surface of the tape upon said roller and in the operated positlon constantly tend to return to an unoperated position, whereby the movement of said tape willtend to move said marking bar from contact with said movin tape.

6. Ina signal recor er, a record tape, propelling-mechanism therefor, a platen, an

inking pad, a marking bar for said tape, a

pivoted fulcrum block in which said marking bar is adapted for relative sliding movement therewith and for conjoint an ular movement therewith about the pivot 0 said fulcrum block, and a pivoted lever connected to said bar and adapted to guide said bar into contact with the tape and the inking pad, and electro-responsive means to move said lever..

7. In a signal recorder, record tape, propelling'mechanism therefor, an elastically yielding platen roller around which said tape is drawn, a marker for said tape having a printing face and arranged to make contact with said tape at said platen roller, said tape arranged to be in motion during the operation of said marker to make an imprint thereon, that edge of the printing face of the marker toward the direction of tape travel arranged to make initial contact with the tape, and the elasticity of the platen roller providing for subsequent contact of the marker and tape over the full area of marking face on an initial operation of the marker, subsequent contacts of said marker with the tape, due to chattering of the marker, being sufficient to indent the platen roller sufficiently to cause the full marking face of the marker to make an imprint on the moving tape, whereby all subsequent imprints due to chattering fall within the initial imprint and a clear imprint is recorded.

8. In a signal recorder, a record tape, propelling-mechanism therefor, a marker arranged to be moved into contact with the moving tape and normally away from contact therewith, magnetic operating mechanism for said marker, the movement ofmarker toward the tape is arrested, where- 'upon said marker is independently moved by its momentum into contact with the moving tape.

9. In a si a1 recorder, a record tape, propelling-mec anism therefor, an elastically yielding platen roller from which said tape is drawn, a marker arranged to be brought into contact with the moving tape at the platen roller, but constantly tending to move out of contact therewith, magnetic operating-mechanism for said marker, the movement'of which is restricted between certain definite limits, connecting-means between said operating-mechanism and said marker operable to move the marker toward the tape, means to arrest the movement of said mechanism with the marker away from contact with the tape, said connecting-means arranged for motion independent of said magnetic operating mechanlsm, to cause the marker and parts inovin therewith to be moved into contact with t e moving tape at the laten roller by the momentum of the marl er and said parts independent of said operating mechanism,v and the elasticity of said platen roller serving to quickly move said marker from contact with the moving tape for such distance as is permitted by said independent movement between said operating mechanism and connecting means.

10. In a signal recorder, a record tape, propelling-mechanism therefor, markingmechanism arranged to be moved into contact with said moving tape and constantly tending to move out of contact therewith, magnetic operating-mechanism arranged to rapidly move said marker toward said tape,

a stop for said operating-mechanism to pre-' vent said mechanism from moving said marker into actual contact with said tape, said marking mechanism arranged for motion independent of said magnetic operating mechanism into actual contact with said tape by its momentum.

11. In a signal recorder having a record tape and marker, an inking pad; and means for removingsaid pad comprising a base plate slidable in a direction parallel to the surface of said pad, parallel links so connecting said base plate and said pad that motion ofsaid base plate may impart to said inking pad movement perpendicular thereto, and a guide for preventing movement of said. pad parallel to said base plate at certain times.

12. In a signal recorder having a record tape and marker, an inking pad; and means for removing said pad comprising a base plate slidable in a direction parallel to the surface of said pad, parallel links so conmeetingsaid base plate and said pad that motion of said base plate may impart to said inking pad movement perpendicular thereto, and a guide for preventing movement of 1 of said marker,

said pad parallel to said base plate at certain times, all so constructed and arranged that when said base plate is in norn'ial position the inking surface of said pad will be in positlon be engaged bysaid marker whenever sald marker is in normal position, and that said pad, when said base plate is moved toward or away from normal position, will move only in a line substantially perpendicular to the surface of said marker while said pad is within the'range of motion of said marker.

13. In a signal recorder having a record tape and marker, a removable inking pad so constructed and mounted that when said pad is in normal position its inking surface will be in position to be engaged by said marker Whenever said marker is in normal position, and that said pad, when moved toward or away from normal position, will move only in a line'substantially perpendicular to the surface of said marker while said pad is within the range of motion of said n'iarker.

14. In a signal recorder having a record tape and marker, an ink box so mounted as to receive said marker when in normal position andadapted to contain ink .to a

suitable level, an inking pad located below Y said ink level in such position in said box, that said marker may be brought intoconpad and having its uppersur top of said box, and a splash;

tact with said face below the plate around and above said inking pad.

15; In a si nal recorder having a record tape and mar er, an ink box so mounted as, to receive-said marker when in normal position-and adapted to contain ink to a suitable level, an inking pad located below said ink level in such position in said box that said marker may be brought into contact with said pad and having its upper surface below the top of said box, and a splash plate in :said box located above said inkingpad and having an opening therethrough, in the path and a flange around and extending above said opening.

'16. In a signal recorder having a record tape and marker, an ink box so mounted as to receive said marker when in normal position and adapted to contain ink to asuitable "level, an inking pad located below said ink level in such position in said box that said marker may be brought into contact with said pad'and having its upper surface below the top of said box, and a splash plate in said box located above said inking pad and having an opening therethrough in the path of said marker and another opening through which ink may be introduced into said box, and a flange around and extending above said first named opening.

17. A signal-recorder having a switch associated therewith adapted to control a cir emit, normally wound propelling -mechapism ill for the record tape, starting and stopp ng mechanism for the propelling-mechanism having a controlling-member to which the switch arm is pivotally connected, said controlling-member adapted to have a thrust imparted to it by a moving part of the starting and stopping mechanism when said mechanism acts to arrest the movement of the propel]ing-mechanism, which thrust is transmitted to the switch arm to operate the same. I

18. A signal-recorder having a switch associated therewith adapted to control a circnit, normally wound propelling-mechamsm for the record tape, starting and stopping mechanism for the propelling-mechanism having a controlling-member to which the switch arm is pivotally connected, said. controlling-member adapted to have a thrust imparted to it by a moving part of the starting and stoppingv mechanism when said mechanism acts to arrest the movement of the propel]ing-mechanism,' which thrust is transmitted to the switch arm to move the same in one direction, and means for moving said switch arm in the opposite direction when such thrust is not applied thereto.

19. A signal-recorder having a switch associated therewith adapted to control 2. e11- cuit, propelling-mechanism for the record-- ing tape, means for moving the switch arni in one directlon comprising a member adapted to be moved mto the .path of a com paratively fast-moving part of the propelling-mechanism, and a comparatively fastmoving part of the propelling-mechanism adapted to engage said member and transmit movement thereof to the switch arm, and means to move the switch-arm in the other direction.

20. In a signal-recorder having a switch associated therewithadapted to control a circuit, propelling-mechanism for the recording tape, a detent lever controlling the prepelling-mechanism, to which the switcharm is pivotally connected, means subject to the control of the recorder, constantly tending to move said detent lever in one direction, means operated 'by the recorder to move said detent lever in the opposite di rection, means operated by the recorder through the engagement of said detent lever by a comparatively fast-moving part of the propel]ing-mechanism for moving said switch arm in one direction, said switcharm having means associated with it for moving it in the other direction.

' 21. A signal-recorder having a switch associated therewith adapted to control a circuit, propellirig-mechanism for the recording tape, means adapted to be operated by the recorder for moving the switch-arm in one direction, comprising a detent lever having one end pivoted to the switch-arm, and the other end connected with the recorder and movable thereby, a comparatively fastmoving part of the recorder adapted to engage said detent lever and transmit motion thereof to the switch arm whenever the detent lever is moved to a certain position, and means constantly tendin to move said switch arm in the other direction.

22. A signal-recorder having a switch associated therewith adapted to control a circuit, propelling-mechanism for the recording tape, a controllin detent-lever therefor, means controlled by the recorder, constantly tending to move said detent lever in one direction, means operated by the recorder for moving said detent lever in the other direction, a connection between the detent lever and switch arm whereby motion is imparted to the switch arm in one direction upon engagement of said detent lever with a comparatively fast-moving part of the signal mechanism, and whereby thrust of said part against said detent lever will hold said switch arm in one position, and means constantly tending to move said switch-arm in the opposite dlrection.

23. A signal-recorder having a switch associated therewith adapted to control a circuit, propelling-mechanism for the recording tape, a controlling detent-lever therefor, means controlled by the signaling mechanism constantly-tending to move said lever in one direction, means operated by said signaling-mechanism for moving said detent lever in the opposite direction a connection between said detent lever and the switch arm whereby said detent lever will impart motion to the switch arm in one directlon upon engagement of said detent lever by a comparatively fast-moving part of the signallng-mechanism whereby thrust of said part against said detent lever will, hold the switch-arm in one osition and whereby disengagement of said detent lever will release said switch-arm from control of said detent lever and permit it to move in the opposite direction, and means constantly tendin to move said switch-arm in the opposite direction.

24. In a signal-recorder, in combination with record tape, propelling-mechanism therefor, controlling-means for said propelling-mechanism and recording mechanlsm, of a latch dog pivotally mounted on said controlling-means, and by means of which said controlling-means is operated, and a projection carried by said recording-mechanisin, said projection adapted to first operatively engage, and then disengage, said latch dog during movement of said recording-mechanism in one direction, and to be operatively disengaged from said latch dog during movement of said recording mechanism 1n the reverse direction.

25. In a signal-recorder, in combination with record tape, propelling-mechanism therefor, controlling-means for said propelling-mechanism 'and recording mechanism, of a-letch dog pivotally mounted on said controlling-means, and by means of which said controlling-means is operated, a limit in carried by said controllini-means and a a ted to be engaged by a suite. 1e part of said atch dog, and a projection carried by said recording-mechanism, said projectlon adapted to first operatively e, and then disenga e, said latch do during movement of sai recording-moo anism in one direction, and to be operatively disengaged from said latch dog during movement of said recording-mechanism in the reverse di- 16 H. W. DOUGHTY.

Witnesses:

H. C. Acxnnmgn, F. WILLIAMSON.