US2253545A - Printing telegraph apparatus - Google Patents

Description

- R. E. ZENNER PRINTING TELEGRAPH APPARATUS Aug., 26, 394i Filed Nov. 25, 1938 Patented Aug. ze, 1941 PRINTING TELEGRAPH APPARATUS Raymond E. Zenner, Chicago, Ill., asslgnor to Teletype Corporation, Chicago, lll., a. corporation oi.' Delaware' Application November 25, 1938, Serial No. 242,408

(o1. ir-4) 20 Claims.

The present invention pertains to printing telegraph apparatus and more specifically to printing telegraph apparatus capable of tabular recording.

The invention has for its primary object the preparation of a control strip for controlling telegraphifcally the recordation of tabular matter eiiiciently and reliably.

Another object of the invention is to produce la signal control strip so perforated as to provide variable tabulation time intervals by inserting automatically in the control strip variable pluralities of tabulation-time code signals having non-spacing and non-printing attributes.

A feature of the invention resides in providing a keyboard perforator or keyboard transmitter, additional mechanism controlled by tabulator mechanism for automatically operating, for variable periods of time under the control of the tabulato-r mechanism, a function key lever provided with repeat mechanism, whereby the code signal controlled by said function key lever is repeated consecutively a number of times co-rresponding to the tabulation-time.

To achieve the above and other objects of the inventio-n, a keyboard perforator and transmitter of the type disclosed in U. S, Patent No. 1,965,572 is modified for the production of perforated tape to be subsequently employed to control the transmission of message matter em bodying tabulation operations. q

In printing telegraph systems employing recording apparatus provided with tabulating mechanism, a variable interval of time is required to move the type carriage (or platen carriage, as the case may be) from one tabular position to another. This interval will be termed therein as tabulating time. In the manual operation of key controlled recording apparatus cognizance is taken of tabulating time by the operator, who, during such time, refrains from operation of the keyboard. However, in automatic operation of such recording apparatus under remo-te control of tape transmitters wherein the apparatus is unattended for extended periods of time, it is desirable to simulate manual control during tabulation so asto maintain a tabulating condition automatically during the time that the carriage is in motion while tabulatingthus attaining proper tabular operation of the recording apparatus.

The present invention provides for the operative .association of a keyboard perforator transmitter with a receiving printer, whereby the receiving printer may be made to respond to the operation of the keyboard transmitter simultaneously with the perforation of a tape. Such an arrangement produces a printed copy or home record corresponding to the perforations in the tape, and allows the operator to determine easily and quickly by merely reading the printed message whether the perforated message is the message desired to be transmitted.

Specifically, when a perforated record is made involving tabulated portions, it is expedient to compensate for the tabulation time required at the recorder, either by suspending transmission during tabulation, as disclosed in U. S, Patents 2,104,071 and 2,104,110, or by employing the arrangement or method of the present invention, which continues transmission but suspends printing. In the type of tabulating recorder disclosed in U. S. Patents 2,104,071 and 2,104,110, a tabulator bar extends across the front of the machine, is carried by brackets mounted in the typing unit, and is capable of swinging toward and away from the type carriage. The tabulator bar carries a number of adjustable stop members which determine the distances through which the type carriage is automatically propelled, each of which distances is equivalent to a plurality of character spaces, following the reception of a tabulator code signal combination.

According to the method embraced bythis invention, the tabulator key of the keyboard is operated to set the keyboard permutation elements for a tabulation initiation code signals,

the home recorder responds to code signal impulses generated by the transmitter and effects the function of initiating the tabulating operation, causing the operation of the tabulating bar to close a contact in the circuit of a solenoid positioned above a function key lever; for example, the Figures key lever. This solenoid thus becomes energized and, through a repeat mechanism, initiates continuous and repeated operation of the transmitter. This setting of the keyboard permutation mechanism by the soleand the tape perforator perforates repeatedly,y

the code signal for tabulating time continuation. This tabulating time continuation code signal preferably is selected so as to be ineffect1ve upon any printing member, although this feature is not fundamental to the invention, since were the hyphen type or period type or underscore type responsive to the signal, the result would ,be a line of printed characters of the nature selected, thus leading the eye of the reader from one tabulation column along a line of legibility to the next tabulation column, which effects may be desirable, particularly in case of i tabulation columns widely separated upon a page The continuation code signal also lsrdesirably non-spacing in the sense that i1' such a signal were received by a receiving tabulating printer alter the carriage has stopped in response to tabulation control, it is desirable that response to the continuation code signal will not step the carriage from its tabulation control position.

A better understanding of the present invention may be had from the following description taken in conjunction with the accompanying drawing wherein like reference characters are used to designate similar parts throughout the several figures, and wherein:

Fig. 1 is an elevational view, partly in section,

' of a keyboard periorator and transmitter embodying the present invention;

Fig. 2 is a fragmental perspective view of the arrangement according to the present invention;

Fig. 3 is a schematic electrical diagram of the perforator magnet operating circuit;

Fig. 4 is a detailed sectional view taken on line 4-4 of Fig. 1; and

Fig. 5 is a detailed sectional view taken on line 5-5 of Fig. 1.

Having reference to Fig. 1, there is shown a receiving printer of the type disclosed in U. S. Patent 1,904,164 to which is associated a tabulator mechanism, a keyboard, a perforator, and a transmitter. This comprises a base portion, in-

dicated generally by the numeral II, upon which is mounted a typing unit, indicated generally as I2. Associated With the base portion Il is a perforator, indicated generally as I3, and a transmitting portion, indicated generally as I4.

Positioned at the rear of the base portion II is a pivot rod I5 (Fig. 1), which extends transversely of the base portion. To the pivot rod I5 a plurality of key levers I6 are rotatably mounted which are normally urged upwardly by individual springs (not shown) and which are provided, as is the usual practice, on their forward end with keys (not shown) arranged in banks. Beneath the key levers I6, and extending transversely thereof, are a plurality of pairs of permutation bars I9 and 2l. As is well known, the number of pairs of permutation bars corresponds to the number of elements in the permutation code; for example, five or six. The permutation bars I9 and 2i are provided at each end withvertical slots or notches 22 and 23, respectively, Which fit over guide combs 24 and 25. The bars I9 and 2i are thus held against 1ongitudinal movement, but are free to be shifted vertically in response the operation of key levers Pivotally mounted on rods 26 and 21 are a pair of rocker arms 28 and 29 interposed between each pair of bars I9 and 2l. The rocker arms 28 and 29 are substantially T-shaped, with their free ends formed with off-set lugs on opposite sides of the pivot rods 26 and 21 and spaced some distance therefrom, one of the lugs of each rocker arm projecting forwardly beneath the lower edge of corresponding permutation bars ZI, and its other lug projecting rearwardly bethis arrangement, the depression of either permutation bar of the pair of bars I9 and 2l rocks the arms 29 and 29 and lifts the companion permutation bar.

lated a longitudinally movable link 3|. Thus.

when the permutation bars I9 and 2i are moved j' vertically in accordance with the depression of a key lever I6, the link 3l individual to a pair of the permutation bars I9 and 2l is moved longitudinally, or in a direction of its length.

Each of the key levers I6 is arranged, when operated, to engage and depress one of the permutation bars .of each pair of permutation bars I9 and 2| and to set these permutation bars' in accordance with a character code combination. The ,upper edges of permutation bars I9 and 2l are notched to provide high and low portions in accordance with the respective code signals. Also, the bars of each pair of permutation vbars I9 and 2l are complementary; that is. the notches of one bar are opposite the projections for a short distance, when they will be blocked by the high portion of the permutation bars I9 and 2|. By this construction, the simultaneous depression of two key levers and the transmission oi an incorrect signal is prevented.

The periorator I3 comprises a set of code punches 32 movable through an opening in upper.

and lower guide plates 33 and 34, and cooperative with a guide plate 35 to perforate a tape 36. The plates 33 and 35 are spaced apart to form a tape guide. Intermediate the guide plates 33 and 34 is a stripper plate 31 which cooperates with shoulders on the code punches 32 and a feed hole punch (not shown), and due to the action of springs 38 operates to remove the punches clear of the tape following the operation of a punch hammer 39. The code punches 32 are selectively operated by the actuating member or punch hammer 39 and a set of interponent bars l 4I corresponding in number to the punches 32.

heath the companion permutation bars I9. With Operatively associated with each of the bars 4I is a pivoted arm 42 which is connected to a link 3| by means of a connecting bar 43.

The hammer 39 rocks about its pivot 44 and forms the armature of an electromagnet 45. 'I'he interponents 4I are adapted to slide on the hammer 39. When the perforating magnet 45 is unenergized, the hammer 39 is retained in its counterclockwise position by a spring 46. Punch hammer 39 carries at the left end thereof a pawl member 41 which cooperates with ratchet teeth 48 of a spacing roller 49 which is also provided with feed pins 5I adapted to mesh with the feed `holes which are invariably perforated in the tape 36. Thus, when the magnet 45 is energized and the hammer 39 is rocked to its clockwise position, pawl 41 is raised to engage a tooth 48 on the spacing roller 49. Then, upon the deenergization of magnet 45, spring 46 actuates the hammer 39 to its counterclockwise position and draws the pawl 41 downwardly, which movement causes the spacing roller 49 to be rotated counterclockwise one angular step to effect the spacing of the tape 36 one unit distance.

To prevent repeated operation of the perforating magnet 45 due to the chattering of the operating contact 52 in response to a tremulous touch To the depending portion o! each T-shaped rocker arm 29 or 29 is pivotally articug asaus of a key and thus to insure a single operation of `the perforating magnet 45 upon each depression of a key lever I6, an anti-chatter means is provided. In addition to the ve or six pairs of permutation bars I9 and 2|, there 'ls provided an additional bar 40, the link 3| of which is connected by a bar similar tov43 to a contact operating lever 50. Associated with contact operating lever 50 is a pair of contacts 62. In the unoperated position of the apparatus, the contact operating lever is held in its clockwise position byl a spring 53, which constitutes also a return spring for the universal bar 48, and through control of an insulated striker the contacts 52 are held open. Then, upon the operation of a key lever I6, the contact operating lever 58 is operated counterclockwise to close the contacts 52, and, at its end 54, it becomes engaged by a latch member 55, thus latching the contacts 52 closed. When the magnet 45 becomes energized and its armature is attracted to rotate the print hammer 39 clockwise, an adjustable striker 51 carried on a bracket 58 integral with print hammer 39 acts upon arm 59 of latch lever 55 to rock the latch 55 counterclockwise, thus disengaging said latch from the end portion 54 of lever 50 whereupon lever 50 is rocked clockwise by its spring 53 to permit contact 52 to open. It is thus seen that with this anti-chatter` arrangement, the energizing of the clutch magnet 45 is independent of a tremulous touch on a key lever I6 since, as soon as the key has been depressed to close contact 52, the latch 55 acts immediately to maintain said contact 52 in the closed position, whereafter they will be opened only upon energization of magnet 45 and operation of hammer 39 through the cooperation of striker 51 and arm 59.

When the perforating mechanism I3 is employed in combination with the keyboard transmitter I4, the permutation links 3| are each provided with a pair of upstanding guide lugs 6|. Interposed between each pair of lugs 6| is a depending arm of a locking latch 62, pivoted on a common rod 63. In this manner, locking latches 62 are pivotally articulated to the permutation links 3| and are adapted to be rocked about pivot rod '63 to either of two positions. Associated with latches 62 are a corresponding series of contact levers 64 for making and breaking individual contacts 65. Contact lever 64 cooperates with individual contact cam 66 mounted on the transmitting shaft 61 provided with a clutch mechanism 68 (Fig. 2) controlled by a trip member 56 connected to a universal bar member 69, as set forth in U. S. Patent 1,965,572.

The cams 66 are assembled as a unit and have secured thereto the collar 68, a portion of which is serrated, and is normally urged along the shaft 61 to the right, as viewed in Fig. 2, by a spring 1|. Secured to the shaft 61, and arranged to cooperate with the collar 68, is a similarly machined collar 12. The shaft 61 is connected to a source of driving power in a manner such that it is driven continuously, but due to the arrangement of the collars 68 and 12, which constitute a clutch between the shaft 61 and the cams 66, the latter may be selectively rotated. i

The spring 1| tends to move the collar 68 along the shaft 61 and into engagement with the collar 12, but this action of the spring is normally prevented by means of a pivoted arm or trip member 56, which has a portion thereof spring urged into the path of a shoulder 13 formed on the collar 68. The shoulder 13 is also formed with a gradual camming surface, so that as the collar 68 rotates it willl cooperate with the associated portion of the stop arm 56 and cause the collar 68 to be moved along the shaft 61 against the action of spring 1| to disengage the serrated portion of the collars 68 and 12 and stop the rotation of the collar 68 and its associate cams 66. Trip member56 has a horizontal portion 14 which is operatively associatedl with one arm of a T- shaped lever 15, the depending arm of which is pointed as at 16, and which is normally in the path of a shoulder 11 formed in a trip-of! pawl member 18. The member 18 is secured to the universal bail 69 which is rotatably mounted on studs 19, and which is rotated upon the depression of any of the keys of the keyboard.

The universal bail 69 and the member 18 are normally biased to a position shown in Fig. 2 by a spring 8|, 'one end of which is fastened to the member 18, and its other Aend is secured to a stationary bracket (not shown). When the universal bail 69isY depressed, the member 18, against the action of spring 8|, will be moved to the left, as viewed in Fig. 2, and the shoulder 11 will engage the pointed end 16 of the T-shaped lever 15 and cause the stop arm or trip member 56 to be moved, through the depression of portion 14, out of engagement with the shoulder 13 of collar 68. Under these conditions the spring 1| urges the collar 68 to the right', as viewed in Fig, 2, and the serrated portions of the collars 68 and -12 are brought into engagement with each other and the power from shaft 61 is communicated thereto to rotate the cam 66 through one complete cycle. When the cams 66 approach the end of their cycles of rotation,.the cam surface preceding the shoulder 13 is effective with the trip member 56 to move the collar 68 against the action of spring 1| and effects the disengagement of the serrated portions of the collars 68 and 12.

The universalvbail 69 is urged to its normal position by spring 8| so that the member 18 will likewise be urged to its normal rightward position. Due to the action of a trip-off pawl eccentric in camming the shoulder 11 of tripoir pawl 18 out of engagement with the end 16 of member 15, the latter will be restored to its normal position invariably for each operation of the keyboard mechanism, thus providing a non-repeat mechanism. However, in some instances it is desired to continue the rotation of the cam drum or cam assembly 66 for a longer period, as previously mentioned as one of the objects of the present invention, and for a period suilicient to transmit successively a plurality of groups of impulses of the same character. In

order to achieve this result, there is associated with a space bar 82, a member 83. which is fastened to the rod 84 on which the space bar 82 is loosely mounted. Member 83 is provided with a forwardly extending portion 85 having a laterally disposed end 86 adapted to be disposed beneath the space bar 82. Member 83 is also provided with a vertically extending portion 81, to the upper extremity of which is connected a rod 88. The rod 88 has a horizontally extending portion 89 which is normally in alignment with the downwardly extending portion of the T-shaped member 15. Consequently, when the space bar 82 is depressed, it will act through extremity 86 of arm 85 of member 83 to move the rod 88 to the left, as viewed in Fig. 2, and the portion 89 will engage the downwardly extending portion of the T-shaped member 15 and cause its rotation and the corresponding rotation of stop' member 56 for releasing the cams 56 i'or'rotation. The T-shaped lever will be held in a position to retract the stop member 55 from cooperation with shoulder I3 and the-cams 56 will be rotated through successive cycles as long as the space bar 02 is held depressed.

To achieve a similar result automatically, the space bar mechanism of the apparatus according to the present invention is provided, as shown in Fig. 2, with an arm 9| fixed to` the rod 04. The arm 9| is provided at its extremity withra laterally extending portion 92 which, according to the present. embodiment, is located below the key level' 93 identified with thciiguresor shift combination. Of course, it is understood that any function key lever can be adopted or used to achieve the object of the present invention. The essential requirement in the choice of key lever is that it should be identiiied with a code combination wherein the spacing and printing mechanisms are not operated.

Positioned above the key lever 93 is a solenoid 94, the movable core SI5-of which is adapted to operate the key lever 93 in a manner to be here- A ting of which, through links 3| determines the positions of the locking latches 62. The rotation of the cams 56 is initiated substantiallyvsimultaneously with the setting of the locking latches, through the instrumentality of trip member 56, which is acted upon by the universal bar 69. A locking loop 60 (Fig. 1), controlled by a cam 99, carried on the shaft 61, is permitted to rotate in a counterclockwise direction, as viewed in Fig. 1, to lock the latches 62 in their selected position. The setting of latches 62 determines Whether the contact levers 64 shall or shall not be operated by their associated cams 66 to transmit, through contacts 65, over a signal line l0, to the receiving station, a predetermined code combination of signaling impulses. The respective notches in the cams 66 are arranged in a helical progression so that upon the rotation of the cam assembly, the contacts controlled by levers 64 will be operated successively. The apparatus herein disclosed is operated in accordance with an equal length letter code in which each code combination is a permutation of marking and spacing conditions, and is preceded by a start impulse and followed by a stop impulse according to the well-known startstop system.

When the perforator and transmitter are to be operated simultaneously under the control of-a key lever I6, means is provided for starting the operation of the perforating device under control of the transmitting devices to insure that the same signal that is transmitted is also invariably perforated in the tape. To achieve this result, two pairs of contacts |0| (Fig. 1) are positioned over tWo adjacent transmitting cams 66, as more fully disclosed and described in copending application Serial No. 167,139 iiled October 4, 1937, by R. A. Lake. 'Ihe pairs of contacts |0| are mounted on a bracket |02, and associated with each pair of contacts |0| for controlling the operation of the same is a cam follower |03 or |04. In this manner, cam followers |03 and |04 ride into the depression of their associated cams 66, which are the same depressions which act to operate the contact levers 64. The purpose of having two -iil vcondition by a single 'pair of contacts. 'Ihe contacts |0| are normally open, and when the transmitting cam distributor (comprising cams 55 and contacts 55) is operated, the circuit for the perforator magnet 45 will invariably be closed for the period of substantially two impulse intervals because of an overlap in the sequential operation of the pairs of contacts Ill. y

The keyboard mechanism shown in Fig. 1 is similar to that described and shown in U. S. Patent No. 1,965,572. With the mechanism shown in said patent, it is desired in some instances to transmit directly to a line circuit 'code combinations of impulses representative of the character key operated, while in other instances it may be more practicaliirst to periorate a tape in accordance with the key operated, and then to transmit subsequently the signals corresponding thereto by subjecting the tape to a tape transmitter. To provide for the several possible conditions of operation of the mechanism, a switch is arranged in the keyboard apparatus to control the transmission of impulses directly to the line circuit, the perforation of a tape only, or the operation of the transmitting distributor and the perforator simultaneously.

To control these various operations, a switch lever |05 (Fig. 1) is provided which is mounted adjacent the transmitting distributor I4. Lever |05 assumes three positions; namely, an upper position |0BA (Fig. 3), a middle position |06, and a lo-wcr position |06B, and is held vin any one of these positions through the cooperation of a bracket |01. As shown in Fig. 3, switch member |05 is provided with a biiurcated end having strikers which cooperate with a group of iive contacts |08. The position of the switch member |05 indicated at |06A is known as the keyboard position, and is a position wherein only direct keyboard transmission of signals to the line is effected; that is, each time a key lever is operated, the transmitting cam drum is rotated a single cycle to transmit a code combination of signals through contacts 65 to the line. In this position of member |05 all of the iive contacts of contact bank |08 are opened.

4The position of switch member. |05, indicated as |06, is known as the tape and keyboard position and is that `condition of the apparatus wherein the perforator and transmitting mechanisms are operating simultaneously. In this position, the contacts of the contact bank |08 are arranged, as shown in Fig. 3, wherein the loWercontact |2 remains closed, and in this position the energizing circuit for the perforating magnet 45 extends from positive battery over conductors |09 and Hl, through contact ||2, through contacts |0| associated with the transmitting cams, thence over conductor ||3, through the Winding of the perforating magnet 45, then to negative battery. From the previous description it is observed that contacts |0| are closed periodically, once for each cyclic rotation of the transmitting cam drum'. In this manner, the operation of the perforator magnet 45 is assured. The position of the switch member |05 indicated in Fig. 3 as |06B, is known as the tape position, and in this position, the automatic tabulating mechanism is not used. I

According to the present invention, the keyboard periorator and transmitter of the type disclosed in U. s. Patent No. 1,965,572 is modied for the production of perforated tape to control the transmission of message matter embodying tabulation operations. To achieve this result, the typing unit |2 is provided with a tabulating mechanism, which will now be described. The typing unit, indicated generally as I2 in Fig. 1, includes a primary selecting mechanism represented by single selector magnet 2|, shown in Fig. 1, and is of the T-shaped sword and lever type, disclosed in U. S. Patent No. 1,745,633 issued to S. Morton et al., and a secondarselector or selector vane assembly indicated generally as |22. through a set of bell cranks |23, a corresponding set of curved code bars |24 carried in a movable type carriage, indicated generally as |25. As set forth in U. S. Patent No. 1,904,164, this type carriage is movable longitudinally with respect to a stationary platen (not shown), but manifestly the invention'is not limited to its application to such apparatus. l

The tabulating mechanism which is in accordance with U. S. Patent No. 2,076,864, comprises a tabulator bar |26 extending in front of the printing apparatus, as shown in Fig. 1, and which is provided with depending portions |21 and |28, by means of which it is pivotally mounted on a bracket |29 carried in the printer frame. The tabulator bar |26 is adapted to be swingable toward and away from the type carriage |2, and is also provided with a longitudinal slot |3| extending substantially the entire length of the bar, within which extend movable stop members |32, which are clamped to the bar |26 by means of screws |33 and clamping member |34, (Fig. 2). As indicated in Fig. 4, these stop members |32 are provided with an inclined or cam portion |30, conformed to produce a quick camming-out action upon cooperating with a cam element |20, carried by the type carriage 2, to terminate the tabulating operation.

Tabulator bar |26 is also provided, intermediate the depending portions |21 and |28, and suitably positioned relative to tabulator function lever |35, with another depending portio-n |36. Attached to and depending from portion |36 is a bar |31, the lower end of lwhich is provided with an aperture |38 (Fig, 2) having its upper right-hand corner formed so as to provide a reentrant stepped portion |39. The tabulator bar 26 normally tends to move in a clockwise direction, as viewed in Fig. 2, due to the action of aspring |4|.

Cooperating with the stepped portion |39 is one arm |42 of a lever |43 pivoted at |44. The extremity of arm |42 is provided with a laterally disposed portion |45 which cooperates with stepped portion |39 of member |31. At the end of arm |46 of lever |43 is carried a vertically extending member |41, the upper end of which is provided with an open ended slot adapted to engage a pin |48 carried by the upper escapement pawl |49 of the spacing mechanism which is fully described and shown in U. S. Patent No. 2,076,864.

The selector vanes |22 control a series of function levers, including the tabulator function lever |35. Function lever |35 is provided on an arm with code notches and projections which cooperate with the varies of the selector vane assembly |22, and which are coded to correspond with the tabulator signal. Thus, when the vanes |22 are set according to the tabulator signal in 'I'he selector vane assembly |22 controls,l

response to the operation of the selector mechanism |2|, the tabulator function lever |35 willA be selected and will be urged toward the selector vanes 22 by spring |52 about its pivot rod |53.

Function lever |35 is provided with a horizontal portion |54, so conformed that its extremity 55 engages the lower edge of arm |46 of lever |43 so that, when function lever |35 (upon its selection) is permitted to rotate in a counterclockwise direction under the action of its spring |52, the end |55 thereof is raised, thus rotating lever |43 against the tension of its spring |50. The laterally disposed end |45 of lever |42' is thereby moved downwardly clear of the stepped portion |39, permitting spring |4| to urge the tabulator bar |26 inwardly (or clockwise as viewed in Fig. 2) until wall |56 of member |31 engages the laterally disposed portion |45. Adjustable sto-ps |32 are moved inwardly into the path of a cam member |20 (Fig. 4), which is pivoted at |58 on a portion |59 integrally formed on a bar ISI, which is comparable to\bar 53, shown in Fig. 1 of Patent 1,904,164, and which is employed for retaining the bell crank levers |23 in operable relation to vanes |22. Cam |20, like bar |6| and bell cranks |23, is movablev with the type carriage |25 for carriage spacing, and normally tends to rotate in a clockwise direction about pivot |58 due to the action of a spring |62, but its clockwise rotation is limited by the coaction of a stop pin |63, carried thereon, with the end of bar |6|. Consequently, upon the rightward movement of type carriage |25, as viewed in Fig. 1, cam |20, due to its limited rotatability in a clockwise direction, will, by its camming action on stop members |32, rock tabulator bar |26 outwardly; but upon a leftward movement of type carriage |25, cam |20 upon striking the series of stop members |32, will be rotated counterclockwise against the action of spring |62, avoiding operation of the cam portion |30. When the tabulator bar is thus actuated outwardly b v the cam |20, against the action of spring |4|, the laterally disposed portion |45 of lever |43 will escape the stepped portion |39 and through the action of spring |50 will resume its upward position shown in Fig. 2.

As a result of the aforementioned operation of lever |43 upon the selection of the tabulator function lever |35, the spacing pawl |49 is lifted out of engagement with the spacing ratchet |65 by the link |41, and is held out of engagement therewith so long as the laterally disposed portion |45 is restrained by the stepped portion |39, which is as long as, or for theperiod of time which, it takes the carriage |25 to carry the cam |20 to the next tabulator stop |32, when, due to the camming out of the tabulator bar |26, the lever 43 is released to respond to the action of its spring |50, whereupon the spacing pawl |49 is permitted to return into engagement with the ratchet |65 to stop the carriage |25.

It is an object of the present invention to perforate the tape to correspond tothe tabulating time as well as for the tabulation initiating code signal. To achieve this result, the tabulator bar |26 is provided with a depending tongue or portion |1| (Fig` 1), the lower end of which cooperates with a bell crank |12 pivoted at |13, Fig. 5, to the base |14. Arm |15 of bell crank |12 cooperates with an insulated button |16 of a contact pair |11 mounted on a bracket |18 fixed to member |29. The pair of contacts |11 is connected in an obvious circuit including the solenoid 94.

General operation During the normal operation of the apparatus shown in Fig. 1; that is, during the transmission of straight message matter (such as does not involve tabulation), the tabulating bar |26 remains in its counterclockwise position (as viewed in Fig. 2) against the tension of its spring |4|, whereat laterally disposed end |45 of lever |42 is in engagement with the vertical or forward edge of step |39 of member |31. In this condition of operation, contacts |11 remain open and consequently the energizing circuit for solenoid 94 is broken. However, in the preparation of messages containing tabular matter, during which the take 36 is simultaneously perforated, it is necessary in the preparation of perforated tape to be used subsequently for automatic transmission, to compensate for the time consumed during the various tabulation operations, which is done in the following manner.

Upon depression of the tabulation key, the pairs of selector bars I9 and '2| are set in a characteristic permutable manner, moving thereby the links 3| to the rightor left-hand longitudinal position. Corresponding permutable settings are given to interference members 4| and locking latches 62. Simultaneously with the depression of the tabulation key, the universal ball 69 is operated, which acts through levers 18 and 15 to release the shaft 61 for rotation through one cycle by permitting the engagement of collars 68 and 12. This .causes cams 66 to control the closure of transmitting contacts 65, Whereupon signal impulses are impressed on signal selector magnet |2| and interconnected repeater magnets |80, whereupon the selection of the tabulation code is set up on the vanes |22 in the manner described in U. S. Patent No. 2,076,864.

Upon the operation of the main operating shaft, the function lever |35 is permitted to be advanced towards the vanes |22 by its spring |52, and since the code notches on the function lever |35 correspond to the setting of the vanes |22, a selection of the function lever |35 is effected whereupon end |55 of arm |54 of function lever v|35 is raised to impart counterclockwise rotation to the tabulating operating lever |43. Through the laterally disposed portion |45, lever |43 is latched in its counterclockwise position, as previously described, to hold the spacing pawl |49 out of engagement With spacing ratchet |65, to initiate continuous spacing of carriage |25 during tabulation, However, when the tabulating bar |26 is actuated inwardly (o r clockwise as viewed in Fig. 2) by the spring |4|, the depending portion |1| moves outwardly, and in so doing causes bell crank lever |12 to be actuated in a clockwise direction (Fig. 5) to close the contacts |11, to establish the energizing circuit for the solenoid 94. When the solenoid 94 is thus energized, its movable core 95 will be actuated downwardly to cause the depression of the key lever 93, which according to the present embodiment is identified with the figures code combination. Key lever 93 upon being so depressed will operate the pairs of selector bars- |9 and 2| in accordance with the figures code combination, setting the links 3| correspondingly. The setting of links 3| in this manner will effect a corresponding setting of the interference members 4| and the locking latches 62, so that the code combinations perforated in the tape and the signals transmitted over the wire 10 will correspond to the "iigures code combination. As previously described, key lever 93 also actuates the lever arm 9| through its lateral portion 92 to rotate the rod 84, thus imparting corresponding rotation to lever 83. This movement of lever 83 will, through rod 88, rotate lever 15 so as to disengage the trip member 56 from the clutch collar 68. Member 83 and its rod 88 will hold the lever 15 in this position so long as solenoid 94 remains energized. Therefore, the operation of the perforating mechanism I3 and the transmitting mechanism I4 will continue so long as the cam drum 66 is permitted to rotate, and this is timed by the approach of the cam |20 to the tabulator stop |32.

When the cam |20 reaches the tabulator stop |32, the tabulator bar |26 will be cammed outwardly and the laterally disposed portion |45 of lever |43 will ride oi the step portion |39 and be returned to its clockwise position by its spring |50, thereby permitting the upper space pawl |49 to return into engagement with spacing ratchet |65 to stop the progress of the carriage. At the same time, the depending portion |1| is returned to its inward or counterclockwise position, thus permitting bell crank |12 to be returned to its counterclockwise position (as viewed in Fig. 5) by its spring |10, thus permitting the contacts |11 to open, thereby breaking the energizing circuit for the solenoid 94. When this occurs the solenoid core will be retracted or actuated upwardly to permit the key lever 93 to be restored to its upward or unoperated position. This will permit rod 84 to be rotated clockwise to impart similar rotation to lever 83, whereby rod 88 will be actuated rlghtwardly (as shown in Fig. 2) to become disengaged from lever 15, thus permitting the clutch triplever 56 to engage the collar 68 of the clutch to stop the shaft 61 from rotation. In this condition the mechanism is not only in readiness for the next tabulation operation but also for any subsequent key operation.

Withthe apparatus just described, a. printed copy or home record is produced, corresponding to the perforations made in the tape. Furthermore, not only is a home record made of ordinary straight matter, but a record is made of matter containing tabulated portions, and the perforated tape is so produced as to compensate for the tabulating time, so that when utilizing the tape for retransmission, transmission need not be suspended during tabulation time because sumcient non-spacing and non-printing code combinations of tabulating continuing nature have been perforated in the tape to permit the carriage at the remote printers to move between tabulation stops. With the apparatus according to the present invention, the perforated tape is made to correspond with variable tabulating periods so that there is no undue loss of line time.

Although a particular embodiment ofthe invention has been described herein, it will be understood that the apparatus is capable of many modifications, and it is contemplated that all changes which come within the range and scope of equivalency are intended to be embraced within the purview of the appended claims.

What is claimed is:

1. In a telegraph system, a transmitter, selector mechanism for controlling the effectiveness of said transmitter, a. receiver responsive to signaling conditions comprising a circuit controlling means, and electromagnetic means controlled by said circuit controlling means for controlling the effectiveness of said selector mechanism during certain periods of operation of the receiver.

2. In a telegraph system, a transmitter, selector mechanism for exercising a predetermined control over said transmitter, a receiver responsive to signaling conditions comprising an electromagnetic device, and means controlled by said device for varying the control exercised by said selector mechanism.

3. In a telegraph system, a perforator, means for exercising a predetermined control over said perforator, a receiver responsive to signaling conditions comprising asolenoid, signal responsive means in said receiver for controlling said solenoid, and means controlled by said solenoid for varying the control exercised by said first recited means.

4. In a telegraph apparatus, a plurality of signal determining means, selector mechanism for exercising a predetermined control over said means, a movable carriage, tabulating mechanism effective under control of said selector mechanism to control the uninterrupted advancement of said carriage through a plurality of spaces ata time, and an electromagnetic device controlled by said tabulating mechanism to vary the control exercised by said selector mechanism during said uninterrupted advancement of said carriage.

5. In a telegraph apparatus, a plurality of signal determining means, selector mechanism for exercising a predetermined control over said means, a movable carriage, tabulating mechanism eifective under control of said selector mechanism to control the uninterrupted advancement of said carriage through a plurality of spaces at a time, a solenoid, a circuit therefor, and circuit controlling means controlled by said tabulating mechanism to vary the control exercised by said selector mechanism during said uninterrupted advancement of said carriage.

6. In a telegraph system, the combination of a manually operable keyboard mechanism, a tabulator mechanism responsive thereto, a tape perforator responsive to control by said keyboard mechanism, means in said keyboard mechanism to initiate operation of said perforator, a solenoid and a circuit therefor, and circuit controlling means in said tabulator mechanism effective through said solenoid to continue operation of said perforator during the operation of said tabulating mechanism.

7. In a telegraph system, a signal determining means, selector mechanism for controlling the effectiveness of said signal determining means,

means responsive to signaling conditions comprising a circuit controlling means, and electromagnetic means controlled by said second recited means for controlling the effectiveness of said selector mechanism during certain periods of oneration of the receiver.

8. In a telegraph system, a signal determining means, a selector mechanism for controlling the effectiveness of said signal determining means, a tabulating mechanism responsive to signaling conditions comprising a circuit controlling means, and electromagnetic means controlled by said circuit controlling means for controlling the effectiveness of said signal determing means during certain periods of operation of said tabulating mechanism.

- means controlled by said instrumentality, means for producing a tabulation-time-continuation signal, and electromagnetic means 'controlled by said circuit controlling means for holding said last mentioned means operative during the period of operation of said tabulating mechanism.

l1. In a telegraph apparatus, a platen, type carrying mechanism, means for producing relative movement between said platen and said type y carrying mechanism, a plurality of signal determining means, selector mechanism for exercising a predetermined control over said means, tabulating mechanism effective under the control of said selector mechanism to control uninterruptedly the relative movement between said platen and said carriage a predetermined amount, and an electromagnetic device contr-oiled by said tabulating mechanism to vary the control exercised by said selector mechanism during said uninterrupted movement.

12. In a telegraph system, a perforator, means for exercising a predetermined control over said perforator, a receiver responsive to signaling conditions comprising a circuit controlling means, and means controlled by said circuit controlling means for varying the control exercised by said first recited means.

13. In a telegraph system, a perforator, means for exercising a predetermined control over said perforator, a receiver responsive to signaling con ditions comprising a circuit controlling means, and electromagnetic means controlled by said circuit controlling means for varying the control exercised by said rst recited means.

14. In a telegraph system, a transmitter, a selector mechanism for controlling the effectiveness of said transmitter, a receiver responsive to signaling conditions including a circuit controlling means, and electromagnetic means at said receiver controlled by said circuit controlling means for controlling the effectiveness of said selector mechanism during certain periods of operation ofthe receiver.

15. In a telegraph system, a transmitter, a key operated selector mechanism for controlling the effectiveness of said transmitter, a receiver responsive to signaling conditions including a circuit controlling means, an electromagnetic means at said receiver 'controlled by said circuit controlling means for controlling the effectiveness of said key operated selector mechanism during certain periods of operation of the receiver.

16. In a telegraph system, a transmitter, selector mechanism for determining the signals to be transmitted, a receiver responsive to transmitted signals, a movable carri-age in said receiver, tabulating mechanism under the control of the transmitter to advance the carriage a predetermined number of spaces, and electromagnetic means operated byv said tabulating mechanism to cause the transmitter to transmit nonspacing signals during the advancement of the carriage by the tabulating mechanism.

17. In a telegraph system, a transmitter, a selector mechanism for determining the signals to be transmitted, a receiver responsive to transmitted signals, a tabulating mechanism associated with said receiver and under the control of the transmitter including circuit controlling means, and electromagnetic means controlled by said circuit controlling means to cause the transmitter to transmit nonspacing signals during the operation of the tabulating mechanism.

18. In a telegraph system, the combination of a transmitter, printing mechanism and perforating mechanism responsive to said transmitter, selector mechanism for controlling said transmitter, and a tabulating mechanism under the con' trol of said transmitter including electromagnetic means to control said printing and perforating mechanisms.

19. In a telegraph system, the combination of a transmitter, printing mechanism and perforating mechanism responsive to said transmitter, selector mechanism for controlling said transmitter, a tabulating mechanism under the control of said transmitter including circuit controlling means, and electromagnetic means controlled by said circuit controlling means to control said printing and perforating mechanisms.

20. In a telegraph system, a combination of a transmitter, printing mechanism responsive to said transmitter, perforating mechanism also responsive to said transmitter for perforating signal combinations on a tape, selector mechanism for controlling said transmitter, and tabulating mechanism under the control of the transmitter including electromagnetic means tocause said perforator to perforate nonspacing code combinations in said tape during the operation of the tabulating mechanism.

RAYMOND E. ZENNER.

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