Printing telegraphy

Abstract

Claims

Nov. 18, 1930. E. E. KLEINSCHMIDT 0 PRINTING TELEGRAPHY Original Fil ed March 7, 1922 '2 Sheets-Sheet 1 Ja ATTORNEYS Patented Nov. 18, 1930 UNITED STATES PATENT OFFICE EDWARD E.'KLEINSCH1@ID'I' OF CHICAGO, ILLINQIS, Assrenon, BY mn'sNEnssIGN- MENTS, T TELETYI'E CORPORATION, or CHICAGO, ILLINOIS PRINTING TELEGBAPHY Application filed March 7,1922, Serial No. 541,745. Renewed December 1, 1928. In an application, Serial Number 432,564, filed December 22, 1920, issued Dec. 8,1925, ' as UnitedStates Patent No. 1,564,121, a receiving unit for printing telegraphs is shown and described, particularly applicable to the Baudot or like systems, in which the usual distributor head is omitted, and a rotatable member, .coacting with movable members, substituted, thus eliminating the distributor brushes which always are a source of serious trouble and of large expense. v The present invention is an improvement upon the receiving unit disclosed in this application. -It has for its particular object a new arrangement of a modified rotatable member, coacting with its movable members to, in turn, close thecircuits for the selector magnets. These, thereupon, cause the shifting of the selector bars and thereby permit the pull bars of a telegraph printer to assume operative positions which result finally, in the actuation of printing means or-the performance of any of the mechanical functions of a telegraph printer. A particular object of the invention refers to the employment of individual latches for the circuit closing devices of the selector magnets, in order to store line impulses during the actual printing operation, and another object is the arrangement of means for proper orientation of the releasing means of the rotatable member, in relation to the receiving of the firstimpulse and so establish cyclic synchronism. A further object relates to novel means for shifting the selector bars and permitting the storing of impulses while the printing of a character takes (place and causing the stored impulses to become effective as soon as the printing of a character or the performance ofv a mechanical function of the telegraph printer is completed. 7 The drawings which disclose features not particularly set forth in the foregoing statement of invention, show in Fig. 1, a diagram of the electrical circuits, Fig. 2, is a modified circuit including a polar relay, Fig. 3 a front elevation of the rotatable member and its cooperating parts, Fig. 4, a plan View of the devices, shown in Fig. 3, Fig. 5, a front elevation of one form of a selector unit, Fig. 6, a plan view of the device shown in Fig. 5, 7, a front elevation of a modified form of a selector unit, and Fi 8, a plan view of the device shown in Fig. Operating mechanism Fig. touching either of the contact points 13 and 14. The marking contact 13 may be conductively connected to a circuit containing a magnet 15 and a source of electrical energy 16. Another form of connection for magnet 15 is disclosed in Fig. 1, in which the polarrelay is eliminated and a source of electrical energy for magnet 15, arranged at the sending station, similar to the arrangement, eiausing the energization of polar relay 11, Magnet 15, which may be termed the start ing magnet, is normally energized and-attracts its armature 17, against the tension of' the retractile spring 18 and, when not energized, permits spring 18 to hold armature 17 against the adjustable stop 19. Armature 17 rocks on a shaft 20, and its arms 21 form a bell-crank-like structure. The ends of arms 21, remote from shaft 20, are connected by auniversal bar 22, and the movement of arms 21 is limited by a stop pin 23. - The universal bar 22, during the period of energization of magnet 15, rests against the ends of-the middle arms 24 of a plurality of T-shaped levers, all pivoted on a. common shaft 25 and held under tension of springs 26, not only against universal bar 22, but also by means of arms 27, against the periphery of a rotatable member 28. Member 28 consists of a plurality of cam discs 29, secured togetheir and provided with notches 30, spirally staggered around the periphery of member 28, so as to insure succession of the effects, caused by the dropping of the ends of levers 27 into notches 30. The entire member 28 is frictionally carried on a shaft 31, continually rotated by the other side of source 79 to contact point means of any suitable driving means 32. A helical spring 33 and a collar 34 permit of regulation of the frictional drive. A special disc 35 of member 28, is provided with a radially extending lug 36, having a pin 37 adapted to engage a rocking latch 38, pivoted to a bracket 39, adjustably carried on the 1 frame of the apparatus. The rocking movement of latch 38,toward pin 37 is limited by means of a stop pin 40. A bail comprising arms 41, 42 and cross-piece 43, integral therewith, is pivoted on shaft 25, and arm 42 is provided with an angularly extending lever'arm 44, havin a shoe 45, adapted to be engaged by pin 3%, for a purpose hereinafter set forth. The movementof arm 42 is limited by a stop pin 46, located in front of arm 42. A series of contact springs 46 to 52, inclusive, are arranged behind the T-shaped levers, and are capable of engaging stationary, adjustable contact points 53 to 59, inclusive, when pressed rearwardly by the insulated ends to 65, inclusive', of the arms 66 of the T-shaped levers. The free ends of the four contact springs 46 to 49, inclusive, are adapted to be held by latches 67, under tension of springs 68, and each having an arm 69, arranged to be engaged on the rearward movement of cross: piece 43 of the. bail, already mentioned. Latches 67 are provided with insulated endpieces 70, having a step at the end and an end-face 71. The ends of the contact springs 46 to 49, inclusive, rest in the step of the end-pieces 7 0, when the contacts are open, but on the end faces 71, should contacts have been closed, as hereinafter described. An insulated piece 72 connects contact springs 51 and 52, so that the same are jointly acted upon by the insulated end of the corresponding T-shaped lever. The five contact points 53 to 57, inclusive, are electrically connected through selector magnets 73 to 77, inclusive, in parallel to conductor 78, shown in broken lines in the diagram, Fig. 1, and forming one-leg of a local circuit, in cluding a source of electrical energy 79. The other leg 80, shown in solid lines, leads from 59, in turn, to contact springs 46 to 52, inclusive. all arranged in parallel, and to contact points 53 to 58; inclusive. Contact points 58 and 59' are connected to contact springs 81, 82, of a contact device, adapted to close acircuit to operating magnet 83, such as disclosed in application, Serial Number 530,880, filed January 21, 1922 and issued as United States Patent #1,564,422, Dec. 8, 1925. The closing of contact springs 81, 82 is accomplished by means of pull-rod 84, actuated by armature 85, of operating magnet 83. One end of pull-rod 84 presses contact springs 81, 82, together, when the other end 86, is engaged by armature 85, but contact spring 82 is immediately released, at the end incline 87, disengages from armature 85, and. contacts 81, 82 are again opened. Operation The normal, or position of rest of the organization of parts, shown in Figs. 3 and 4, is preconditioned by the continuous rotation of driving means 32. Rotatable member 28 is stationary, though under tension to rotate, on account of its frictional arrangement on shaft- 31, but held from rotation by pin 37 locked against latch 38. This latch is secured by head 88, oflever 89, under tension of spring 90 and normally engaged by bail 22 of armature 17. The stroke of lever 89 toward latch 37 is limited by stop pin 91. Magnet 15, being in a normally closed circuit and, therefore, energized, in attracting its armature 17, and holding one of the arms 21 against pin 23, looks all T-shaped levers, by means of the universal bar 22. Lever 89 of latch 38, thereby holding pin 37, and preventing rotation of member 28. The breaking of the line circuit, incidental to the transmission of signaling impulses, results in theretraction of armature 17 and the removal of universal bar 22 from the five T- shaped levers and the locking lever 89. Latch 38 can no longer withstand the pressure of vpin 37, under its tendency to rotate, and member 28 is permitted so to do, at a speed somewhat faster than the speed of the transmitter at the sending station. It is thus started and stopped, once at each revolution, to maintain cyclic synchronism, a procedure now. Well known in the art. Pin 37 in its position of rest also engages shoe 45 of lever 44, and its release from latch '38, results in the release of shoe. 45 and the removal .of cross-bar 43, integral with lever 44, from the ends of arms 69, of the four latches 67, adapted to lock the contact springs 46 to 49, inclusive. The springs 68 give latch ends 70 a bias toward the ends of the contact springs which rest on the steps of the latches. Latch '38 and lever end 88 are immediately returned to normal, by spring 90, acting on lever 44, so that bail 22 is at liberty to return to normal at the next closure of the line circuit, and will do so on the closure of any break occurring during one revolution of member 28. On account of the cyclic synchronism, existing between the transmitter at the sending station and the distributor at the receiving station, successive signaling impulses are now received in time-d relation. In view of the fact that the present system is based upona normally closed line circuit, no current on the line identifies a marking impulse, and current on the line, a spacing impulse. In other words, the opening of the line circuit, or a marking impulse, results in certain positive manifestations and the closing of the line has no effect, except the return of bail 22 to normal and the prevention of the operation of any parts engaged thereby. A special start impulse originating at the sending station, in the present system, i. e., an opening of the line circuit, precedes the reception of the signal impulses and results in the preliminary operations just described. The signal impulses, following the start impulses, must of course, coincide with the falling of levers. 27 into notches 30 and are received in sequence. Wherever a break of the line-circuit, in this case a marking impulse, permits a lever'27 to fall into its'notch, one of the correspondingcontact springs 46 to 49, inclusive, will be brought in contact withits contact points 53 to 56, inclusive, but-no electrical effect takes place at this time; The selectedsprings are displaced and locked; up in displaced position by end faces 71 of latches 70, in front of the ends of springs 46 to 49, inclusive. When the T-shaped lever, control ling contact springs 51 and 52, closes contacts58and 59, which occurs at the same time that the fifth impulse contact spring 50 is operated, then all selector magnets whose contacts have been closed, will be energized simultaneously, as hereinafter described. At the completion of one revolution of member 28, pin 37, in reaching its position of rest, engages head of lever 44, raises crossi bar 43, returning all displaced latches 67 to normal position, and causing the ends of the displaced springs 46 to 49, inclusive, to again rest in the steps of insulated ends- Con-' tact between all springs and all contact points is again broken. a An inspection of the diagram, Fig. 1, shows that all electro-magnetical manifestations take place in a localcircuit-having asingle source of energy, the battery 7 9. Marking impulses coming over the hue result in the displacement of certain of the contact springs. Two notches 30, cooperating with T-shaped levers displacing contact springs 50 and 51, corresponding to. the fifth signala ing impulse and the so-called sixth, or operating impulse, are arranged side by side on the periphery of member 28, and, therefore, springs 50 and 51 are simultaneously displaced. Contact spring 52, is also simultaneously displaced with springs 50 and 51, by means of insulated push piece 72. Contact springs 46 to 50,'inclusive, may connect to conductors leading to selector magnets 73 to 77, inclusive. and, in turn, to conductor 78, leading to the positive side of battery 79. Contact springs 51 and 52 may extend to contact points 58 and 59. of which contact point 59. over conductor 80. is connected to the negative side of the battery, while con-' tact point 58 is connected to operating magnet 83 and over conductor 78 to the positive side of battery '79. An operating contact, com-" prising contact springs 81 and 82, is bridged ajciz'oss the conductors leading to contact points 58 and 59. Operating magnet 83 actuates .a-contact closer 84, for contact springs 81, 82.;by'means ot' armature 85, engaging it at its front end, while its rear end closes contact springs 81 and 82. At the end of the stroke of armature 85, and end of travel of member 84. the front end 86 of this member climbs up incline 87, until it becomes disengaged from armature 85. whereupon the .ten- Sion of contactspring 82, in opening the operating contact, pulls back member 84. It will now b'eseen that the successive operation of the T-shaped levers, may or may; not result in closing of contact springs 46 to 50, inclusive. to contact points 53 to 57, inclusive, but it will at all times result in closing of con ta ct springs 51 and 52, to their respective contacts'58 and 59. As stated before, contact springs 46to 49, inclusive, may or may not be locked up, contact spring 50 may receive a marking or spacing impulse, not be displaced. The sixth lever, not being T-shaped', as the other five levers, is not controlled 'by armature 17 and its universal bar 22, but at all times operated by its lever end 27, falling into its notch 30, on member 28 at or near the completion of a revolution. It will, therefore, be'se'en that each revolution of member '28, starts on an impulse deenergizing magnet '15, and. stops at the closing and reener izin and de-ener izin of oJeratin D b g magnet 83. x The selector units, disclosed in Figs. 5, 6, i. e. may or may 7 and 8, are of greatsimplicity and comprise I the'selector magnets 73 to 77, inclusive, five in number in a system employing the Baudot code, anda like number of selectoror com bination bars, adapted to permit the actuation of pull bars of a telegraph printer, all as disclosed in application Serial Number 522,398, filed- December 14, 1921. issued as United States Patent 1,448,750, Mar. 20, 1923. F In Figs. 5 and 6. the selector magnets are indicated'at to 7 7, inclusive, and the selector bars at to 114, inclusive. Each magnet is provided with an armature to 119, inclusive, and each armature carries a locking member to 124, inclusive. bar is-provided with one tooth-shaped holding notch and four recesses, 126,127, 128 and 129. The notch in one bar and the recesses 'in the remaining four bars, are all aligned at right angles to the bars, the toothshaped notches, one in each bar, are staggered along the five bars. so that there are fiv'e groups, each containing one tooth-shaped notch and four recesses. The selector bars are slidable in suitable bearings of standards 130, Each selector 131, each bar having reduced end portions. holding the bars, when displaced, under tension to return to normal. The means for disv placing the bars in Fig. 5, include a bell-crank 135, having a bail or cross-bar 136, engaging a special notch 137, and a leverarm 138, secured to the operating shaft of the telegraph printer, shown in application, Serial Number 522,398, issued as United States Patent #1,448,7 50, so that all the selector bars are shifted to the left, as viewed in Fig. 5, and locked in this position by the locking members 1 20 to 124, respectively, each engaging its tooth-shaped notch 125. The top edge of each selector bar is provided with code notches 139, which,'in groups of five, aligned at right angles across the bars, represent the code arrangement for any letter, figure or symbol and for any mechanical function of the telegraph printer, as now well known in the art. The pull bars 140 are capable of dropping in a group. of five aligned code notches 139, and while therein,'are operated by the printing" magnet of the telegraph printer, in the usual manner. Figs. 7 and 8, disclose a modified arrangement of the selector magnet unit. The essential difference, in comparison with the arrangementshown in Figs. 5 and 6, consists in the direct shifting of the selector bars by means of the armatures 141, against the tension of the armature springs 142 and the selector bar springs 143. Each bar is provided with anotch 144, in which the end of the armature 141 is located for shifting the selector bar, when a selector magnet is energized. The selector bars are held in shifted position by lock bar 145, having a lmife edge, capable to engage a similarly formed notch 146, on the upper edge of the selector bars and operated with one of the pull bars of the telegraph printer. It will be noted that in the present invention the energization ofthe selector magnets and the shifting of the selector bars takesplace atone and the same instant of time, coincident with the closure of contact springs 51, 52, and their respective contact points 58, 59, and that impulses may be stored in the contact springs of the selector magnets while the actual printing of the preceding character takes place. What is clainred as new, is r 1. In a selective system, rotary means, means for arresting rotation of said rotary means, means for adjusting the position of said arresting means while said rotary means is in rotation to change the position in which said rotary means is brought to rest thereby, and means controlling said arresting means to initiate rotation of said rotary means. '2. The combination as set forth in claim 1 in which said rotary means comprises a rotary distributing member together with 9. selecting mechanism controlled by said distributing member. 3. A distributor for selective systems comprisin a rotary member, start-stop means for initiating rotation of said rotary member and for arresting rotation thereof at the end of each revolution, and means for adjusting the position of said start-stop means to change the starting and stopping position of said rotary member while it is rotating. 4. The combination as set forth in claim 3, in which said start-stop means comprises in electro-magnet and a movable stop mem- 5. The combination as set forth in claim 3 together with a selecting mechanism controlled by said distributor'at fixed relative points of the rotation of said member, and in which the adjustment of said start-stop means effects orientation of said distributor with respect to said selecting mechanism. 6. A mechanism selectively responsive to received code combinations of marking and spacing conditions comprising means operating in definitely timed relation with respect to said received conditions, a plurality of selecting mechanical members successively conditioned for movement by said means, and 'means for preventing all substantial movement of said selecting members except when marking conditions are received. 7. The combination as set forth in claim 6 together with means controlled by said last mentioned means for initiating the operation of said first mentioned means at the beginning of the reception of each codecombination. 8. The combination as set forth in claim 6 in which said first mentioned means comprises a rotary cam shaft, and in which said last mentioned means comprises a single electro-magnet controlling said selecting members by solely mechanical means. 9. A mechanism selectively responsive to received code combinations of marking and spacing conditions comprising an electromagnet, rotary means initiated in rotation by the actuation of said electro-magnet immediately preceding the reception of each of said code combinations, and arrested in rotation immediately after the reception of each of said code combinations, and a plurality of electrical circuit closing contact members selectively actuated in accordance with said received code combinations under solely mechanical andjoint'control of said rotary means andsaid electro-magnet. 10. The combination as set forth in claim 9 together 'with means for locking certain ones of said contact members in closed posit-ion. 11. The combination as set forth in claim 9, together with means for locking certain ones of said contact members in closed position, and. means for releasing said locking means to permit said contact members to restore to open position simultaneously after the reception of each code combination has been completed.- 12. The combination as set forth in claim 9 together with a selector magnet individual to each of said contact members and controlled thereby. 13. The combination as set forth in claim. 9 together with an electrical circuit closing contact member actuated under the control of said rotary member at the end of the reception of each code combination, and an operating magnet controlled by said last mentioned contact member. 14. A selecting mechanism comprising a plurality of selector magnets, an armature individual to each of said magnets, a plurality of notched selector bars held in unactuated position by said armatures, means for energizing said magnets to permit movement of said bars to actuated position in accordance with a received code combination of electrical impulses, means for restoring said bars to unactuated position, and means for energizing said magnets in accordance with a succeeding received code combination of impulses before said selector bars have been restored from said actuated positions assumed in response to the preced ing code combination. 15. The combination as set forth in claim 14: in which each of said code combinations is composed of permutations of successively received impulses, together with means for simultaneously energizing said magnets in accordance with said code combinations. 16. The combination as set forth in claim 14 in which each of said code combinations is composed of permutations of successively received impulses, together with means for simultaneously energizing said magnets in accordance with said code combinations, and means for simultaneously de-energizing said magnets after the complete reception of each code combination. 17. A selective mechanism comprising a plurality of movable selector members, a plurality of selector magnets controlling said selector members,-means for condition- 17 in which said first mentioned means comprises a plurality of electrical contact members, and locking means to lock said contact members in closed position in response to 17 in which said first mentioned means comprises a plurality of electrical contact members, and'locking means arranged to lock all of said contact members except the one controlled by the last condition of each combination in response to the received code combinations of conditions. 21. The'combination as set forth in claim 17 together with selectable means controlled by said" selector members and operating means 'for said selectable means. e 22. The combination as set forth in claim 17 together with selectable means controlled by s'aid selector members, operating means for said selectable means, and means actuated after the reception of each code combination for causing functioning of said operating means. 23. The combination as set fort in claim 17 together with selectable means controlled by said selector members, an operating magnet, 21 contact member under solely locai control operated after the reception of each code combination for causing functioning of said operating magnet, and locking means for said operating magnet to insure proper operation of said selectable means. 24. The combination as set forth in claim 17 together with selectable means controlled by said selector members; operating means i for said' selectable means; and restoring means for said selector members actuated f by said operating means after the operation of said selectable means has been complete- 25. A receiving selector. comprising a single magnet; a shaft and means for rotating the same, means controlled by the energization of said magnet for mechanically stoppingth'e rotation of said shaft and by the de-energization thereof for permitting rotation of said shaft; 'means actuated by said shaft duringthe rotation. thereof for successively setting a plurality of selector members; and means controlled b the energization of said magnet for inter erin-g with the successive setting of said selector memb'i's' by said shaft actuated means. 26. A mechanism selectively responsive to received code combinations of marking and spacing conditions comprising means operating in definitely timed relation with res ect to said received conditions, a plurality 0 selecting members successively conditioned for operation by said means, power means for successively operating said selecting members as they are conditioned for operation and means responsive to code combinations-of impulses for preventing or permitting operation of said selecting membersby said power means as they are conditioned for operation by said first mentioned means. 27. A mechanism selectively responsive to received code combinations of marking and spacing conditions comprising a rotating shaft operating in definitely timed relation with respect to said received conditions, and provided with a plurality of notches positioned about said shaft, a plurality of selector members in operative relation with said shaft, one for each of said notches arranged to be successively moved into said notches as said notches come opposite their respective selector and means responsive to code com binations of received impulses for preventing from moving or permitting said members to move, into said notches. 28. A mechanism selectively responsive to received code combinations of marking and spacing conditions, comprising a normally non operating rotating shaft operating in definitely timed relation with respect to said received conditions, and provided with a plurality of notches positioned about said shaft, a plurality of selector members in operative 'relation with said shaft, one for each of said notches, arranged to be successively moved nto sa d notches as each notch comes opp oslte its individual selector, means responsive to code combinations of received impulses for tiated inrotation by the de-energization of said electromagnet immediately preceding thereception of each of said code combinations, and a plurality of electrical circuit closing contact members (selectively actuated in accordance with said received code combinations under solely mechanical and joint control of said rotarylmeans and said electromagnet. 30. A mechanism selectively responsive to received code combinations of marking and spacing conditions, comprising a normally energized electromagnet, a rotating means initiated into rotation by the deenergization of said magnet immediately preceding the reception of each of said code combinations, and arrested from rotation immediately after the reception of each of said code combinations, a plurality of selector mechanisms successively conditioned for operation by said rotating means, power means for operating each of said selector mechanisms as they are conditioned for operation, said electromagnet controlling the application of said power means for operating said selector mechanism in.accordance with the received code combinations of impulses as each selector is conditioned by said rotating means. 31. A mechanism selectively responsive to received code combinations of marking and "spacing conditions, comprising a normally energized electromagnet, a rotating means initiated into rotation by the deenergization of said magnet immediately preceding the recep'tion of each of said code combinations and arrested from rotation immediately after the reception of each of said code combinations, a plurality of selector mechanisms successively conditioned for operation by said rotating means, power means for operating each of said selector mechanisms as they are conditioned for operation, said electromagnet controlling the operation of said selector mechanism by said power means in accord ance with code combinations of impulses as each selector is conditioned by said rotating means, a plurality of electrical circuits closed 'by said selector members in operated positions and means for locln'ng said selector members to maintain said circuits closed. 32. A receiving selector comprising a single magnet, a shaft, means for rotating said shaft, means controlled by the energization of said magnet for mechanically stopping the rotation of said shaft and by the deenergization thereof for permitting the rotation of said shaft, a plurality of selector members in operative relation with said shaft, said shaft being provided with notches for permitting successive operation of said selector members, power means tending to operate said sebeing provided with notches for permitting successive operation of said selector members, power means tending to operate said selector members, means controlled by, the energization of said magnet for interfering with the successive operation of the selector members by said power means as said selectors are conditioned by said shaft, and means for restoring the actuated selector members to unactuated position. - 34. A receiving selector comprising a single magnet, a shaft, means for rotating said shaft, means controlled by the energization of said magnet for mechanically stopping the rotation of said shaft and by the deenergization thereof permitting the rotation of said shaft, said shaft being provided with notches for permitting successive operation of said selee tor members, power means for operating said selector members to operated position as they are conditioned for operation by said shaft, means controlled by the energization of said magnet for interfering with the successive operation of the selector members by said power means, a plurality of selector means controlled by the energization of said magnet for mechanically stopping the rotation of said shaft and by the deenergization thereof permitting the rotation in said shaft, a plurality of selector members in operative relation with said shaft, said shaft being provided with notches for permitting successive operation of said selector members, power means tending to operate said selector mem bers to operated position, means controlled by the energization of said magnet for interfering with the successive operation of the selector members by said power means as they are reconditioned for operation by the shaft, a plurality of selector magnets, means controlled by said selector members for variably operating said magnets, selector bars operated in accordance with the operationof said selector magnets, means for restoring said bars to unactuated positions and means for energizing said magnets in accordance with succeeding received code combinations of impulses before the selector bars have been restored from their actuated positions assumed in response to the preceding code. 36. A mechanism selectively responsive to received code combinations of marking and spacing conditions, comprising start stop means operating in definitely timed relation with respect to said received conditions, a plurality of selecting members normally held from operation and mechanically and successively conditioned for movement by said start stop means and means for preventing substantial movement of each of said selecting members as it is conditioned for movement except when marking conditions are received, said last mentioned means being responsive to a marking condition for startin said start stop means into operation. 37 A mechanism selectively responsive'to received code combinations of marking and spacing conditions in which said marking, condition is identified by no current and the spacing condition by current in the system comprising a rotatable shaft normally held from rotation, means responsive to a marking condition for releasing said shaft, selector members held from operation by said s haft and sequentially released thereby in timed relation with said received code combination of marking and spacing impulse conditions and means responsive to said impulse conditions for successively permitting or preventing the operation of each of said selectors as it is conditioned for operation by said rotatable member in accordance with whether the impulses received are marking or spacing impulse conditions. 38. A mechanism selectively responsive to received code combinations of marking and spacing conditions comprising a normally energized electro-magnet, a. rotary means normally held from rotation, means respon-i sive to the deenergization of said electro-magnet in response to astart condition preceding each code combination for releasing said rotary means to rotate, selector mechanism normally held from operation and sequentially released for. op- eration by said rotary means in timed relationwth said received conditions and means responsive to the energization and deenergization of said electro-magnet in accordance with said received code combinations of conditions for correspondingly preventing or permitting the operation of each of said selector members as it is released by said rotary means. 39. A mechanism selectively responsive to a received code combination of marking and spacing conditions comprising means operated in definitely timed relation with respect to said. received conditions, a plurality of selecting members normally held from operation and selectively released for operation by said first mentioned means in timed relation with said received conditions, and electro-magnetic means responsive to said re ceived code combinations of conditions for selecting members as they are released by said first means, electro-magnetic means responsive to said received code combinations of conditions, means responsive to the deenergization of said magnet for starting said start stop. means into operation, and means responsive to the deenergization of said magnet 1n response to received lmpulse conchtions for preventmg sa1d selector members from operating as they are successively rev leased by said first means. 41. A mechanism selectively responsive to received code combinations of marking and spacing conditions comprising start stop means operating in definitely timed relation with respect to said received conditions; means responsive to a marking condition for releasing said start stop means to operate, a plurality of selecting members normally held from operation, and mechanically and successively conditioned for movement by said first means; and means whereby said impulse responsive means operates to prevent substantially any movement of said selecting members as they are released except when marking conditions are received. 42. A mechanism selectively responsive to received code combinations of spacing and marking conditions comprising a start stop rotary cam shaft operating in definitely timed relation with respect to said received conditions; a plurality of selecting members normally non-operating and mechanically and successively conditioned for movement by said rotary cam shaft; electro-magnetic means responsive to said code combinations of marking and spacing conditions; and means responsive to the deenergization of said electro-magnetic means permitting said cam shaft to rotate and permitting said conditioiied selectin members to operate. 1 Signed at Brodklyn, in the county of Kings and State of New York, this 6th day of March, 1922. EDWARD E. KLEINSCHMIDT.

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