US2104071A - Printing telegraph apparatus - Google Patents

Description

Jan. 4, 1938. C, w, BURCKY 2,104,071

PRINTING TELEGBAPH APPARATUS Filedmay'z, 195e v CHARLES w. BURCKY A ATTORNEY Patented Jan. 4,y 1938 UNITED STATES PRINTING TELEGRAPH APPARATUS Charles W. Burcky, Chicago, Ill., assignor to TeletypeCorporation, Chicago, Ill., a corporation of Delaware Application May z5, 1936. serial No. 81,580

16 Claims.

The present invention relates to printing telecognizance is taken of the tabulating time by the operator, who, during such time, refrains from further operation of the keyboard.' However, in automatic operation of such recording apparatus, by means of tape transmitters Wherein the apparatus is unattended for extended periods of time, it is desirable to simulate manual control during tabulation so as to suspend transmission automatically during the time that the carriage is in motion while tabulating, thus pre,- venting the improper operation of the recording apparatus. It is the principal object of this invention to provide an efficient and smoothly operating tabulating device selectively responsive to code combnations of signaling impulses from an automatic transmitter for controlling tabulation recording and operable automatically to suspend signal transmission during tabulation operations.

A feature of the invention resides in providing m, on the tabulator bar of a transmitter-control printer an extension which opens a contact in the circuit of the transmitting distributor when the tabulator bar is in its effective position and the carriage is in motion. When the carriage 3;, reaches a tabulator stop, and cams the tabulator bar forward, the' contact again closes to establish a condition for releasing the transmitting distributor.

The above and other objects of the invention 4o are accomplished by the provision in a printing telegraph apparatus, of the type disclosed in U. S. Patent No. 1,904,164, of a tabulator bar which extends across the front' f the machineand is carried by brackets mounted in the typing unit and capable of swinging toward and away from the type carriage. The tabulator bar carries a number lof adjustable members which determine the positions to which the type carriage is automatically spaced a plurality of character o spaces upon the reception of a tabulator code signal conibination.r The spacing mechanism of' the printing apparatus comprises a multi-toothed ratchet adapted to cooperate with a pair of pawls which are actuated by the printing bail to func- 55 tion as an escapement mechanism, so, that' upon selector vanes.

each revolution ofthe main shaft, the spacing worm gear associated with the spacing ratchet is permitted under normal operating conditions to escape one tooth at a time, and hence to rotate through a corresponding angle.

According to the aforementioned patent, a series of function levers is provided which operate in accordance with the setting of the series of Within this series of function levers, the present invention contemplates the 10 provision of a tabulating function lever which, when selected, is drawn forward into the selector vanes under spring tension. When this occurs, the rear extension of the function leverv raises and thereby lifts the rear end of a horizontal '15 lever member. When the rear end of this horizontal lever is raised, it lifts, through suitable llinkage, the upper spacing pawl out of engagement with the tooth of` the spacing ratchet,'at' which time the front end of said horizontal member is lowered, thereby unlatching the tabulating bar to permit the latter to be biased by its spring toward the type carriage. When the upper space pawl is thus disengaged, the lower space pawl returns to its normal position free of the teeth on 5 the escapement ratchet, which permits the spacing worm to make one complete revolution instead of only one-third of a revolution during the time that the main shaft rotates through one revolution, and, therefore, the carriage will 'be o spaced continuously a distance, per revolution of the main shaft, which is three times that of normal spacing. distance. To bring the carriage to rest after tabulating, the upper space pawl is permitted to drop again into engagement with a 35 tooth on the spacing ratchet. This latter function is effected by the coaction of a cam element assembled to the carriage and oneof the adjustable members carried by the tabulator bar. This cam forces or cams the tabulator bar for- 40 ward or away from the carriage, against spring tension, and in so doing permits said horizontal member to be restored to its normal position into latching engagement /with the tabulator bar. This restoration action of the horizontal member permits the upper space pawl ,again tofall into engagement with a tooth on the spacing ratchet, which thereupon brings the ycarriage to rest.

During the time in which the carriage is moving automatically from stop to stop during tabulation, it is necessary to suspend transmission of signals to the printer, and accordingly the present invention provides an armdepending from the tabulator bar which cooperates with a bell crank` lever to control a contact in the operating circuit for the start magnet of the transmitting distributor. Thus, when the tabulator bar is unlatched by. the horizontal lever upon the selective operation of the tabulator function lever, the depending portion on the tabulator bar acts through the bell crank lever to open the contact in said start magnet circuit so that, as the carriage is traveling to the next tabulator stop, transmission of signals from the transmitting distributor to the receiving printer is suspended. When the carriage has reached the tabulator stop and has cammed out the tabulator bar, the depending arm will, through the bell crank lever, permit the contact in the start magnet circuit of the transmitting distributor to close, thereby again initiating rotation of the transmitting distributar.

A better understanding of the invention may be had from the following description, taken in conjunction with the accompanying drawing, wherein, r

r Fig. 1 is a. front elevational view of the principal portion of the printing apparatus showing the application of the tabulating mechanism thereto, supplemented with a schematic circuit diagram illustrating the relation between the transmitting distributor and the transmitter-control printer;

Fig. 2 is a J'transverse sectional View of the printer taken approximately on line 2-2 of Fig. 1;

Fig. 3 is a cross-sectional detail view taken approximately on line 3 3 of Fig. 1;' and Fig. 4 is a sectional detailview taken on line 4 4-4 of Fig. 1.

In the accompanying drawing, like reference characters indicate similar parts throughout the several figures. For a complete understanding of details not disclosed herein and which form a part of the present invention, reference should be made to U. S. Patent No. 1,904,164 issued April 18, 1933 to S. Morton, et al.

A typing unit, indicated generally in Fig. 1 includes a primary selecting mechanism represented by single selector magnet II, shown in Fig. 1, and is of the T-shaped sword lever type disclosed in U. S. Patent No. 1,745,633 to S. Morton, et al. (fully disclosed in the rst mentioned patent), and a secondary selector or selector vane assembly indicated generally as I2. The selector vane assembly I2 controls, through a set of bell cranks I3 (Fig. 1), a corresponding set of curved code bars I4 carried in a movable type carriage indicated generally at I5. As set forth in the rst mentioned patent, this type carriage is movable longitudinally with respect to a stationary platen, not shown, but manifestly the invention is not limited in its application to such apparatus.

Referring particularly to Fig. 2, a motor (not shown) supplies power to a main operating shaft I6 which carries the spacing mechanism indicated generally I1, as Well as the selector cam assembly (not shown) which cooperates with the selector magnet II. lThe spacing mechanism I1 controls, through gear I8, shaft I9, gear 2l, and rack 22 (Fig. 2), the successive advancement of the type carriage I5, winding asit does so a carriage return spring 'mechanism (not shown) which restores the carriage to its normal position upon the receipt of a carriage return signal.

Parallel to the main operating shaft I6 is an auxiliary shaft 23 on which are carried various mechanisms, for example, printing bail/24, function lever bail 25, and the escapement elements of the spacing mechanism I1. The printing bail 24, which is actuated by a spring 20, at the proper time in the operative cycle, functions to reciprocate a pull bar operating member 26 to cause, through a pull bar 21, the operation of a particular type bar 28.

The selector vanes 88 control a series of -function levers, including a tabulating function lever 29. The several function levers are pivoted on a common pivot rod 3l and are aligned within slots in a function lever comb 32. Each function lever has an individual spring 33, tending to rotate it clockwise about pivot 3l, but is restrained by the function lever bail 25 acting through rod 34 on arm 35. Function lever 29 is provided onY its arm 36 with code notches and projections which cooperate with the vanes of the selector vane assembly I2 and which are coded to correspond to the tabulator signal.

In Fig. 2 there is shown mounted on the main shaft i6 a ,sleeve member 31, which comprises, integral therewith, a ratchet 33 and a spacing worm 39 meshed with gear I8. Sleeve member 31 is operably connected to the shaft I6 by means of a friction clutch (not shown), and through which it is rotated bymain shaft I6, unless blocked by the pawls;of the spacing mechanism I1, as vwill presently appear.

Referring to Fig. 2, it will be noted that ratchet 38 is provided with three teeth di, d2, and 43, the escapement of which (will allow the type carriage l5 to be moved forward one step or character space for each actuation of the printing bail 2d. As indicated, the escapement mechanism comprises a pair of pawls or levers i9 and 45 pivotally mounted on shaft 23 and a lever 45 carried by the printing bail 24; Spring 41 normally Vtends to bias levers 44 and 45 attrahently, Since it is common to both levers. Lever M is normally urged by spring 41 in a counter-clockwise direction so that its laterally disposed end 43 engages tooth 4I of ratchet 38, thus arresting the rotation of said ratchet. Lever 45 is normally held out of engagement with ratchet 38, opposing the tension of spring 41 by the intervention of lever 46, whose free end extends into the path of laterally disposed end 49.

Lever 46 is pivotally connected at 5I to printing bail 24 and is provided at 52 with a slot and screw adjusting means, whereby, in well known manner, the correct relative position of escapement levers 44 and 45, with respect to ratchet 38, may be determined.

The spacingv operation occurs immediately following or subsequent to the printing of a character in the following manner.

To print a character, the printing bail 24 oscillates and in so doing controls the operation of lever 46. During the 'initial portion of the clockwise movement of arm 46, lever 45, under the action of spring 41, also rotates clockwise to bring the laterally disposed end 53 into the path of tooth 4,2. It is noted that, due to 'the space indicated at 54 between lever 46 and laterally disposed end 55 of lever 44, the latter will not be acted upon, and end 48 thereof remains in engagement with tooth 4I. However, upon the further clockwisehmovement of lever 46, the end of arm 55 is encountered Aand for this reason, similar movement is then imparted to lever 44, effecting the disengagementof end 48 from tooth 4I and permitting ratchet 38 to rotate slightly in a clockwise direction under the inuence of friction clutch members which are situated between sleeve 31 and shaft I6. This motion is limited by the engagement of tooth 42 with laterally disposed end 53 of leyer 46, which lever, as

was noted, was free to rotate in a clockwise direction under the tension of spring 41. Ratchet 38 is, therefore, restrained from rotation by lever 45, while the character is being printed, after which time printing bail 24 and associated lever 46 rotate in a counter-clockwise direction actuatedby a printing cam (not shown) carried on shaft I6. Restraint upon lever 44 by lever 46, through end 55, is thereby removed, permitting lever 44 to rotate in a counter-clockwise direction under the influence of spring 41 into the path of oncoming tooth 43 of ratchet 38. Duringth'is counter-clockwise movement of lever 46,

and after the aforementioned removal, of restraint upon lever 44, lever 45 is caused to rotate in a like direction due tothe action of lever 46 on laterally disposed end 49 thereof, thereby disengaging end 53 of lever 45 from tooth 42 and allowing ratchet 38 to continue its rotation until arrested by the engagement of end 48 of lever 44 with tooth 43. It is observed that as a result `of the escapement mechanism just` described,

there is a period of overlap during which ends 48 and 53,` due to the space indicated at 54, are effective simultaneously to prevent the escapement `of ratchet 38, the ends 48 vand 53 being otherwise alternatelyengageable to permit the escapementof ratchet 38. i

`'It is obvious that'since spacing worin 39 and ratchet 38 are integrally' connected to sleeve 31, the worm 39 will have normally the same intermittent or step-by-step motion, as was herein.

` distance rof one character space.

From the foregoing, it will be observed that character spacing occurs automatically with the printing of each character; that is, the spacing i functionis incorporated into the printing operation. It is well' known that there is a code combination allotted to each type bar; but it is possible to employ a code combination, commonly known asl the space signal, which is identified with no type bar, but which will, nevertheless, initiate the operation of the printing mechanism. Therefore, the spacing between words is accomplished, when a space signalis received, in exactly the same manner as just described, except that no type bar is operated and, consequently, there isno character printed. l

In accordance with the present invention, continuous spacing may be effected upon the receipt ,of a code combination known as the tabulating signal, the function'of which is to initiate the operation of the tabulating mechanism. The mechanically operating tabulating arrangement of the presentinvention comprises a tabulator bar 6I, extending across the front of the printing apparatus as shown in Fig. 1, which is provided with depending portions 62 and 63, .through which bar 6I is pivotally mounted on a bracket 64, carried in the printer frame. Thus, tabulator bar 6I is adapted to be swingable toward and away from the'type carriage I5. Bar 6I is also provided with a longitudinal slot 65 .extending are clamped to the vbars 6I by means of screws '81 and clamps 68 (Fig. 2). As indicated in Fig. 4, these stop members 66 are usually provided with an inclined or cam portion 69, conformed to produce a quick action upon cooperating with a cam element 1I carried by the type carriage I to terminate suddenly the tabulating operation.

Tabulator bar 6I is also provided, intermediate the depending portions 82 and 63 (Fig. 1) and suitably positioned relative to function lever 29, with another depending portion 12. Attached to and depending from portion 12 is a bar 13, the lower end of which is provided with an aperture 1'4 having its upper left-hand corner (as viewed in Fig. 2) formed so as to provide a re-entrant stepped portion 15. The tabulator bar 6I normally tends to move in a counter-clockwise directionas viewed in Fig. 2, due to the action of spring 16 (Fig. 1).

Cooperating with the stepped portion 154 is one arm 11 of a lever 18 pivotally carried at 19 on a 'bracket 8| screwed to thefunction lever comb 32. The extremity of arm 11 is provided with a laterally disposed portion 82 (Fig. 1) which cooperates with portion 15 of member 13. At the end of arm 83. of lever 18 is carried a vertically .extending member 84, the upper end of which is provided with an open-ended slot adapted toengage a pin 85 carried by the escapement lever 44. Function lever '29 is provided with a horizontal portion 86 so conformed that its extremity 81 en-' of arm 11 is thereby moved downwardly clear of portion 15, permitting spring 16 to urge the tabulator bar 6I inwardly (or toward the left as viewed in Fig. 2) until wall 9| of member 13 engages portion 82. Adjustable stops 66 are, therefore, moved inwardly into the path of a cam member 1I (Flgf 4), which is pivoted at 92 on a portion 93 integrally formed on a bar 94, which is comparable to bar 53, shown in Fig. 1 of Patent No. 1,904,164, and which is employed for retaining the bell crank. levers I3 in operable relation to vanes 88. Cam 1 I, like bar 94 and bell cranks I3, is movable with the type carriage I5 for carriage spacing and normally tends to rotate in a clockwise direction about pivot 92 due to the action of the spring 95, but its clockwise rotation is limited by the coaction y of stop pin 96, carried thereon, with the end of 4), cam 1I, due to its limited rotatability in a clockwise direction, will, by its camming action on stopmember 66, rock 4tabulator bar 6I outwardly; but uponthe leftward movement of type carriage I5, cam 1I. upon striking the series of lstop members 66, willbe rotated counter-clockwise against the action of spring95, avoiding. the cam portion 69.

Upon the clockwise rotation cf lever 18, due to the selection of function lever 29, arm v83, and consequently member 84 carried Athereon, will be raised, and in. so doing will, through pin 85, lift escape-ment lever 44 out of engagement with the teeth of the ratchet wheel 39 which, since the lever 45- is (after its oscillation by bail 24)- prevented from engaging the teeth of the ratchet 3 8 due to its being held in its retracted position by leverA 46, permits the worm gear 39 to make onel complete revolution instead of one-third of a `to the engagement of lug 82 with the under side of step portion 15. Thus, carriage I5 will be moved continuusly until cam 1 I. coacts with one Y of the series of stops 66, when, through stop 66, cam 1| will urge tabulator bar 6| outwardly, or in a clockwise direction as viewed in Fig. 2, to disengage lug 82 from portion 15, whereupon lever 18 will again be rotated in a counter-clockwise direction by its spring 89 into the position shown in Fig. 2. Then member 84 carried on arm 83 'of lever 18 will again be lowered, permitting escapement lever 44, under action of spring 41, to engage one of the teeth 4I, 42, or 43 of ratchet 38.

The function lever 29, however, will be returned to its unselected position (as shown in Fig. 2), at the completion of the first revolution or cycle of operation of the main shaft I6, because of the fact that during the cycle the function bail 25 will have been reciprocated nce so that rod 34, upon the down stroke of bail 25, will permit spring 33 to urge lever 29 into cooperative relation with vanes 88 only long enough to effect the selection and the resulting dislodging of pawl 44. Following this, rod 34 willcam the function lever 29 away Yfrom the vanes 88, where it will be held until the reception of another code signal.

It is manifest that during the time that the carriage I5 is moving to effect tabulation, that is, from the time the tabulation signal is received up to the time when cam 1| engages the next stop 66, it is desirable to prevent the transmission and reception of succeeding character code signals, inasmuch as signals sent or received during the vextensive movement of the type carriage during tabulation may not properly effectuate printing. This is especially true in connection with automatic transmission. Hence, it is an object of the present invention to provide means for suspending the transmission of code signals during the tabulation operation. Accordingly, the tabulator bar 6I is provided with a depending tongue or portion (Fig. 1), the lower end of which cooperates with a bell crank |02 pivoted at |03, Fig. 3, to a base |04. Arm of bell crank |02 coacts with an insulated button |06'of a contact pair |01 mounted on a bracket |08 fixed to member 64. The pair of contacts |01 is connected in a circuit including a start magnet |09 of a transmitting distributor indicated generally I I I.

The transmitting distributor which may be of the structure disclosed in U. S. patent to Kleinschmidt No. 1,632,297, comprises a set of tape sensing elements ||0 which, under the control of a tape or signal storing medium 91, control a corresponding series of contacts ||2, which are connected from a common ground over individual conductors ||3 to segments I|4 of a sunflower type distributor |I5, which has a rotary transmitting arm I|6 adapted to traverse the segments I I4. .The arm |I6 is arrested cyclically by a stop lever I|1 controlled by the magnet |09. The inner ring II8 of the distributor ||5 is connected by means of conductor ||9 to the selector magnet 'I I, and inthe event that a series of printers are connected to the transmitter, the selector magnets I I therein are interconnected in series by the line wire 'I2I.

General operation When the manual switch |22 is closed, an energizing circuit for start magnet |09 is completed from battery |23, over conductor |24, through the windings of start magnet |09, over conductor |25, through the pair of contacts |01, thence over conductor |26 and through switch |22 back to battery. In this operating condition, the transmitting distributor is free to rotate and transmits signals to the printers connected to the line in accordance with the permuted operation of contacts I|2 under the control of the perforated tape 91. During the` reception of character signals, the carriage I5 is advanced in a step-by-step manner for normal character spacing. However, upon the receipt of a tabulator signal, the selector vanes 88 will be correspondingly positioned through' the instrumentallty of the selectormechanism of which selector magnet I| is a part, to eiect the selection of function lever 29. As clearly described in the Patent No. 1,904,164, the main shaft cams are initiated into operation in proper time relation with the start signal of the start-stop code signals, and at the proper instant after the reception of the code signal, the shaft I6 is rotated to permit the oscillation of printing bail 24 and also function bail 25. Upon the downward movement of function lever bail 25, function lever 29 is permitted to respond to its spring 33 to ,be biased into selective cooperation with the vanes 88. This movement of function lever 29 causes its end 81 to be raisedto impart clockwise rotation to lever 18, which, through member 84, causes pawl 44 to be disengaged from tooth 4I, and substantially simultaneously therewith causes end 82 to be disengaged from shoulder 15, the latter disengagement permitting tabulator bar 6I to be drawn toward the printer by its spring 16, thus bringing the stops 66 into the path of pawl 1I. Upon the movement of bar 6I, tongue |0I will, through bell crank |02, cause the pair of contacts |01 to be opened, and thereby break the energizing circuit for start magnet |09 to eiiect the arrestment of distributor arm |I6 by arm I|1. Thus, it is noted that upon the receipt of the tabulator signal, not only is the tabulator bar actuated into cooperative relation with the pawl 1|, but also the pair of contacts |01 are opened to suspend transmission during the performance of the tabulation operation.

The return of the printing bail 24 and function lever bail 25, after oscillation, to its position shown in Fig. 2 will cause the function lever 29 to be returned to its counter-clockwise position. But pawl 44, due to the blocking of end 82 of lever 18 by shoulder 15, will remain out of engagement with ratchet 38, thus permitting the shaft I6 to rotate freely to cause the continuous movement of carriage |5 through spacing worm 39 until pawl 1| reaches the next stop 66, at which time, due to the camming action of pawl 1I and cam portion 69, the tabulator bar 6| will be urged outwardly and the arm 13 will be actuated inwardly* (or in a clockwise direction as viewed in Fig. 2) to caus simultaneously the contact |01 to be again closed and the lever 18 to again assume its position shown in Fig. 2, whereby the pawl 44 is brought into engagement with the teeth 4|, 42, or 43 of ratchet 38. The closing of the pair of contacts |01 again initiates, through the energ'ization of starting magnet |09, the operation of the transmitting distributor III. All of the receiving printers connected to the line will be correspondingly operated.

It is understood that many changes may be made in the details set forth in the foregoing description without departing from the essentials of the invention or from the spirit and appended claims.

What is claimed is:

1. In combination, transmitting means effective under the control of a signal storing -medium, a distributor having a normal rest position,

a recorder responsive to signaling conditions from said transmitting means, tabulating mechanism, and means in said 'recorder controlled by said tabulating mechanism for controlling the arrest of said distributor in its normal rest position.

2. In combination, transmitting means effective under the control of a signal storing medium, means for controlling the effectiveness of said signal storing medium, a recorder responsive to signaling conditions, tabulatingA mechanism, and means in said recorder controlled by Said tabulating mechanism f or controlling the effectiveness of said second recited means.

3.v In a telegraph system, a transmitter, a rec order having a carriage, spacing mechanism therefor, permutation code mechanism to control the operations comprising av plurality oi function code levers, tabulating mechanism operative inresponse to the selective operation of a certain one of said levers to control, through said spacing mechanism, the advancement of said carriage through a predetermined plurality of.' spaces at a time, and means controlled by said tabulating mechanism for controlling said transmitter during the tabulation operation.

4. In a telegraph system, a transmitter, means for controlling the effectiveness `of said transmitter, a receiver responsive to signaling conditions comprising a functional instrumentality, and means controlled by said vinstrumentality for controlling the effectiveness of said first recited means during certain periods of operation of the receiver.

5. In combination, a recorder having a carriage movable in accordance with character spaces,

mutation device, a tabulating device controlled by said means for controlling the advancement of said carriage a plurality of spaces at a time from one recording position to another, a transmitting means controlled by a signal storing medium, means for controlling the effectiveness of said signal storing medium, and means in said recorder controlled by said tabulating device for controlling the effectiveness of said last mentioned means.`

6. In combination, a telegraph recorder, selector mechanism responsive to code signals, a type carriage, spacing mechanism operative normally to control the advancement of said type carriage one character space at a time, tabulating mechanism effective under the control of said selector mechanism tocontrol the advancement of said type carriage through a plurality of spacesv at a time, a transmitting means effective under thecontrol of a signal storing medium, means for controlling the effectiveness of said corder controlled by said tabulating mechanism 7. In combination, a recorder, a plurality of recording elements collectively movable normally one character space, selecting means, means controlled by said selecting means for causing said recording elements to advance continuously through a plurality of spaces at a time from one recording position to another, a transmitter, means for controlling the effectiveness of said transmitter, and means in said recorder controlled by said second recited means for controlling the effectiveness of said last mentioned means.

8. In combination, a recorder, collectively movable recording elements, means for restraining the movement of said elements to one character space, means for disabling said restraining means to enable continuous movement of said elements throughout a predetermined plurality of character spaces at a time, a transmitter, means for controlling the effectiveness of said transmitter, and means in said recorder conof said cyclically operable means, a transmitter,

means for controlling the effectiveness of said transmitter, andV means in said recorder controlled by said disabling means for controlling the effectiveness of said last mentioned means during the peri/od of disablement of said spacing mechanism.

10. In a telegraph system, a transmitter operable under the control of a signal storing medium, means for controlling the effectiveness of said signal storing medium, a receiver responsive to l signaling conditions comprising a functionall instrumentality, and means controlled by said instrumentality for controlling the effectiveness of :said first recited means during certain periods of operation of the receiver.

f 11.l In a telegraph system, a transmitter operable under the control of a signal storing medium, Vsensing means for said signal storing medium, a receiver responsive to signalingconditions comprising a functional instrumentality, and

means controlled by said instrumentality for controlling the effectiveness of said sensing means during certain periods of operation of the receiver.

12. In a telegraph system, a transmitter operable under the control of a tape, tape sensing mechanism, a receiver responsive to signaling conditions comprising a functional instrumentality, and meansontrolled by said instrumentality for controlling the effectiveness of said tape sensing means during certain periods of operation of the receiver.

13. In a control system for printing telegraph receivers comprising selecting instrumentalities and a signal responsive means for controlling the selectiveV operation of the selecting instrumentalities, means effective for allowing free operation-f of said means during `signaling periods, and 76 ities to render said last mentioned means ineffective during predetermined periods.

14. In combination, a transmitting mechanism including a rotating part effective for causing the successive transmission of signal impulses, a recorder responsive to said signal impulses, a tabulating mechanism embodied in saidrecorder, and means controlled by the tabulating mechanism for controlling the operation of said part during tabulating operations.

15. In combination, a transmitting mechanism including a rotating part efiectivefor causing the successive transmission of signal impulses, a recorder having a movable carriage responsive to said signal impulses, means in said recorder for effecting continuous spacing or said carriage. and

. means controlled by the selecting instrumentalmeans operated upon the operation of said means for controlling the operation of said part during continuous spacing of the carriage.

16. In combination, a recorder having a movable carriage, means for restraining the movement of said carriage to one character space, means for disabling said restraining means to enable continuous movement of said carriage throughout a predetermined plurality of character spaces at a time, a transmitter, means for controlling the effectiveness of said transmitter, and means in said recorder controlled by said second recited means for controlling the eiectiveness of said last mentioned means during the period of disability of said restraining means.

CHARLES w. BURCKY.

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