US1456534A - Printing telegraphy - Google Patents

Description

May 29, 1923. 11,456,534

H.A.BURGESS PHI NTING TELEGRAPHY Filed Nov; 25 1919 2 Sheets-Sheet l M er/far ftzgy/iiiw'eaa Mm 28 W23. 11,456,534 H.A.BURGESS PRINTING TELEGRAPHY Filed Nov. 25, 1919 2 Sheets-Sheet 2 Patented May 29,

Uit lTE D S HARRY A. BURGESS, OF NEW YORK, N. 1., ASSIGNOR TO NESTERN ELECTETC CQMPANY.

entrant ENCORPOBATED, OF NEW YORK, N. Y., A CORPORATION OF NEW PRINTENG TELEGRAPHY.

Application filed November 25, 1919. Serial No. 340,522.

T 0 all whom it moiy concern:

Be it known that T, HARRY A. BURGESS, a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Printing Telegraphy, of which the following is a full, clear, concise, and exact description.

This invention relates to printing telegraphv and particularly to an improved type of printing telegraph receiving apparatus of the type-bar sort.

An object of the invention is the provision of a novel selecting means for a printing telegraph receiver.

Another object. is to provide a printing telegraph receiver wherein novel means is provided for selectively conditioning a plurality of code bars for operation.

In accordance wit-h the invention an electro-responsive means is provided for actuating one of said conditioned code bars together with means associated therewith for causing the printing of a desired character of a message.

Tn attaining the objectsof the invention, means is provided for distributing a series of impulses received over the line from a distant oflice to a plurality of selecting and operating magnets. These magnets are designed and arranged to control the selection and printing of a character as determined by the message impulse transmitted from a distant station. The invention is disclosed in the accompanying drawing as embodied in a telegraph receiving printer, in which the selecting and operating magnets, together with the various printing elements are stationary and the platen is movable transversely with respect thereto.

The feature of the invention is the pro-. vision whereby the selection and actuation of the printer bars themselves or any other mechanism to be operated is progressive with the reception of line impulses. Assuming that the number of line impulses required to determine the actuation of each type bar is the same, in the case to be described live, a certain number perform a preliminary selecting operation, later ones perform a further selecting operation and cause the restoration of the mechanism employed in making the preliminary selection by the employment of this principle the printer may be made to operate on a substantially continuous series of selecting impulses.

In the drawing, there are no means shown. for line spacing, carriage return, etc, which are necessary in a printer of this sort, but it is, of course, understood that such is employed and that. any well known means may be used for accomplishingthis result. Certain of the actuating elements which are controlled by the transmitted impulses instead of being used to effect printing may, for instance, be reserved for speciahfunctions such as carriage return, shift and non-shift, line space, etc], as is rommon in the art.

The selecting'magnets are so mounted as to control the movement of a selecting or permutation bar individual to each of the selecting magnets. There is also provided a plurality of code bars with extensions which are so designed and positioned as to engage certain projections which are correspondingly arranged on the selecting bars. The selecting magnets are so arranged that when any combination is setup, the selecting bars will be actuated so as to condition for operation a pair of code bars. Each of the code bars is so arranged as to be moved transversely of the selecting bars for actuating a plunger fitted in a movable member, the movement of which is controlled by the operation of a printing magnet and a spring member attached thereto. One of the code bars is therefore adapted to be moved upon the operation of one of the operating magnets. When a code bar is actuated. it pushes sidered in conjunction with the accompany-- ing drawing in which Fig. 1 is a view of the printer and selectlng mechanism together with the circuit arrangement therefor. 1* 1g.

2 is a view of the printer showing the selecting and code bars. Fig. 3 is a view of the mechanism for controlling the operation of the printing magnet as employed in Fig. 1. Fig. 4 is a perspective of the plunger together with the universal bar with which it operates. Fig. 5 shows an alternative arrangement of the printer shown in Fig. 1.

The mechanism herein disclosed is operated preferably by various combinations of five positive and negative selecting impulses with a local impulse following each group of selecting impulses for causing the operation of the mechanism. The impulses may arrive over a line from a distant station and may be distributed to the selecting magnets by means of a Baudot distributor or any other of the well-known distributing systerns.

Referring to the drawings and particularly to Fig. 1 there is shown a polarized relay 7, connected in th line, and adapted to be operated by current impulses of a. positive polarity for connecting the source of battery 9 to the distributor brush arm 8.

The selecting and operating mechanism consists of magnets 1, 2, 3, 4, 10 and 11 together with four permutation bars 12, 13, 14 and 15, the actuation of which is controlled by means of the selecting magnets 1, 2, 3 and The permutation bars have a number of projections on their upper edge, certain ones of which are arranged to be engaged by extensions on the code bars 16.

In a printer of the construction as shown in Figs. 1 and 2, there is provided a code bar for each possible combination of five impulses. The extensions on the code bars are arranged so as to engage the projections on the permutation bars whereby when these bars are actuated by the selecting magnets, two of the code bars will be conditioned for operation. that is the projections on the permutation bars will be moved out of the path of the extensions on two code bars so that one or the other thereof is in a condition to be operated.

The code bars 16 are connected to the members 17 and 18 by means of flexible fiat springs 19 nd 20 and are so arranged as to control the actuation of a particular code bar. The members 17 and 18. are aligned with the permutation bars, one being placed above the other, in which manner it allows for the actuation of one of the code bars upon the energization of either the operating magnet 10 or 11. The armatures of these magnets are so connected with the members 17 and 18 that when attracted, they cause the members 17 and 18 to be revolved about their axis. The movement of the members 17 and 18 in this manner thereby places a tension upon either of the spring members 19 and 20, depending upon which one of the operating magnets is energized for actuating one of the code bars. From this it is seen that a plurality of the code bars are conditioned for operation, one of which is always operable by the spring 19 and the other by the spring 20.

The pernuitation-bars thatare actuated by selecting magnets 1 to 4 are held in their actuated position by means of spring catches on the bars engaging behind downwardly projecting teeth on a rod which extends transversely and above the bars. The rod 23 which is associated with the permutation 1 bars has one end thereof attached to a helical spring and to the other end thereof is attached a hook member 24. The rod 23 is adapted to be moved in a direction transverse to the permutation bars by means of either of the members 25 or 64 which are connected to the member 17 and 18 respectively. The members 25 and 64 are so arranged with respect to a pin 66 in the rod 23 that whenever either of the members 17 or 18 are revolved due to the attraction of the armature attached thereto, the rod 23 will be moved due to the force exerted-by either of the members 25 or (34 on the pin (56. The movement of the rod 23 in this manner thereby permits the hoolcmember 24 to engagethe trigger 26 which is connected to the rod 27. The trigger 2G is held in its normal unactuated position by means of a spring 28. The rod 27 is thereby adapted to be moved transversely of the permutation bars, under the control of the rod 23 and in so moving closes contact springs 29 and 30 and removes the teeth on the bar 27 out of engagement of the path of permutation bars, thus allowing them to restore to normal under control of their springs. The closure of contact springs 29 and 30 causes the operation of relay 31 and printing magnet 32.

In alignment with each, of the code bars there is provided a plunger 33 which has secured to one end thereof a substantially circular member 34, the purpose of which will be more clearly described in the description which is to follow. The plungers 33 are in frictional engagement with the universe-l rat bar 35, which is helc in its normal position by means of a spring 36. The armature of printing magnet 32 is connected with the universal bar 35, in such a manner that when the printing magnet 32 is energized it causes a downward motion of the universal bar 35 against the tension of the spring 36. The actuated code bar pushes the plunger 33 corresponding thereto so that an end of the plunger 33 projects beyond the side of the bar 35 whereby it engages a portion of the bar 37 which is connected to a type bar 33 by means of the links 39 and 40. It is thus seen that when the armature of printing magnet 32 is attracted, it causes a downward movement of the universal bar 35 and the engagement of the bar 31' with the plunger 33, thereby causes the movement of the type bar 38 for the printing of a character on the paper ell, which is suitably supported on the platen 4L2.

Referring now to Fig. l there is shown the plungers 33 associated with the univer sal bar 35 together with the means for re storing the plungers to normal upon the actuation thereof by means of the code bars 16. A rod 42 extends horizontally through each circular member 34 so that when the plunger 33 is depressed, the rod 42 will engage the cam surfaces of members 43 and 44. These members are out in the shape ot a half-moon so that as the bar 35 is actuated the pin is gradually withdrawn, and by the time the bar 35 reaches the limit of its stroke the pin 33 is completely disengaged from the key member 37 and both are tree to restore to normal. The members 43 and a l are stationary and fixed to the frame of the machine.

A better understanding of the apparatus as described in connection with Figs. 1, 2 3, he obtained from the description of a particular character selection and the various operations incident thereto.

Assume that the sending apparatus at a distant station is transmitting a series of impulses for selecting the character D, and further assume that the character D is selected by five impulses consisting ot the following; positive, negative, negative, positive, negative. lhet us also assume that the polarized relay 7, at the receiving station, is so designed as to be only operated by positive impulses from the transmitting station, the energization of which controls the operation of the various selecting and operating magnets. Then, since the first and fourth impulses are of a positive polarity, selecting magnets 1 and 4 will be energized, the energizing circuit of which extends from the source of battery supply 9, contact of re lay 7, contact arm and brush oi distributor 8, contacts over which the brushes pass and the windings of selecting magnets 1 and 4: to

ground.= Since the remainingimpulses are of a negative polarity, no current will be supplied to the selecting magnets 2 and 3 and consequently these magnets will not he energized. Selecting magnets 1 and 1, upon operating thereby attract their armatures for moving the permutation bars 12 and 15. The movement of the permutation bars thereby con ditions for operation a pair of code bars, as the projections on the permutation bars are moved out of the path of the extensions on a particular pair of code bars. The actuated permutation bars are held in their actuated position by means of catches which when the permutation bars are moved from their normal position engage an edge of the rod 27. The fifth impulse which is sent. from the transmitting station controls the operation of relay 45, but since, in the particular case which we have chosen, the fifth impulse being of a negative polarity, this relay will not be operated. However, when the inner brush on the revolving arm of distributor 3 makes contact with segments i6 and 47. operating magnet 11 will be energized over a circuit extending from battery through the winding of relay 11. contacts 46 and 47 and the normal contact of relay 45 to ground. The operating magnet 11 thereby attracts its armature 42 for causing the member 13 to be revolved. Thus all of the springs 19 are placed under tension and press against the code bars with which they are associated. However, since only two of the code bars have been freed due to the actuation of the permutation bars 12 and 15, only one of the code bars will be actuated, as the other code bar which is freed by "the actuation of the permutation bars, is controlled irom the operating magnet 10. @ne of the code bars is thereupon forced into engagement with the circular member 34: of the plunger 33 for causing the movement of the plunger The member 17 in revolving thereby moves the member 25 into engagement with pin 66 of the rod 23 so that the hook portion 24 thereof engages the trigger 26 and restoring causes the movement or the rod 27 for closing the contactsprings 29 and 30 and the restoration of the permutation bars to normal. The closure of these contact springs thereby causes the energization of relay 31 and printing magnet 32, the energizing circuit of which may be traced from battery through the winding and normal contact of printing magnet 32. contact springs 29 and 30, and the winding of relay 31 to ground.

Relay 31 in operating thereby keeps the eircuit of printing magnet 32 closed until near the completion of the printing stroke, that magnet then breaks its own circuit. The printing magnet 32 thereby attracts its armature 4-8 which is connected with the universal bar 35 and moves the same from its normal position against the tension of, the spring 36. The movement of the universal bar 35 in this manner causes the inner projection of the plunger 33 to engage the bar 37, thus a downward movement of the universal bar 35 together with the plunger 33, causes a like movement of the bar 37 and s nce it is so linked with the type bar 38 that any downward movement thereof causes, an upward movement of the type bar 38 for printing the character on the sheet of paper 41 which is supported on the platen 42.

The actuated code bar will be restored to.

this can best be considered from a description of the operation thereof since the same principle as that of Fig. 1 is employed.-

Let it be assumed that the same character is desired to be selected as was previously described in connection with the operation of Fig. 1, The first impulsebeing positive thereby causes the energization of selecting magnet 49, while the next two impulses being of a negative polarity, no effect is produced thereby. However, the fourth impulse being positive, relay 50 will be operated. The attraction of the armature of relay 50 thereby causes the energization of op; erating magnet 51, the circuitoi' which may be traced from battery through the winding of operating magnet 51and the alternate contact of relay 50to ground. The fifth impulse being of a negative polarity, does not cause the energization of relay 52 which is connected with the fifth segment of the distributor 8. i s

The selecting magnet 49, in operating, actuates the permutation bar associated therewith for conditioning for operation a pair of the code bars 16, thus when the operating magnet 51 is energized it places a tension on all of the spring members 53 which are connected with the member 5 1, these spring members being connected with the various code bars in the same manner as previously described. The energization of the operating magnet 51 causes the member 54 to be revolved for tensioning the s ,ring members 53 and in turn causes the actuation of one of the code bars, the operation of which had been conditioned b the movement of the permutation bars. T e actuation of the code bar pushes the plunger 33 through the hole in the universal bar 35 in the same manner as previously described, Inthe con struction of I the printer, {as shown in {1-, the universal bar is, adapted to move both in an upward and a downward direction against' the tension of the flexible springswhich are secured to theunder and upper side thereof. v v I I The contact armof the distributor 8 ,in passing over the contacts 55 and 56,"causes the energiz ation of the printing magnet 57, the circuit of which may be traced from battery through the winding of printing magnet 57, contacts 55 and 56, together with the inner brush on the contact arm of the distributor 8 and the normal contact of relay 52 to ground. The armature 58 is so positioned between the printing magnets 57 and 59 that the universal bar 35 to which the armature 58 is connected is adapted to be moved either in an upward or a downward direction, depending upon which one of the printing magnets is energized. The armature 58 thereof being normally held in position be tween the magnet 57 and magnet 59 by means of a jockey spring 60 which dampens the vibration of the armature 58 upon its return to normal. Thus when the operating magnet 57 is energized, the armature 58 will be attracted to the right which causes a downward movement of the universal -bar 35 and causes the inner portion of the plunger 33 to engage the bar 61. and cause the movement of the type bar which is suitably connected thereto.

If the fifth impulse sent from the trans mitt-ing station had been of a positive polarity, relay 52 would have been operated and would have thereby caused the operation of printing magnet 59 for attracting armature 58 to the left. The attraction of armature 58 to the left causes an upward movement of the universal bar 35 and the engage ment of the plunger 33 with the bar 62. Th engagement of the plunger 33 with the bar 62 and the upward movement of the universal bar 35 thereby causes the type bar 63 to be moved in an upward direction for the printing of the character associated there with on the sheet of paper 41 which is supported on the platen 42. 7

It is thus seem from the description relative to Fig, 5 that the selection is made from a pair of sixteen code bars, the actuation of which controls the depression of a plunger, and with the fifth impulse, depending upon whether it is negative or positive, determines the character to be printed.

Since in each case the selecting mechanism comprising the code bars and permutation bars is to a great extent independent of the actuating mechanism comprising the universal bar 35 and associated parts, the printing action may beprolonged without tying up the selecting mechanism. 1? or this reason the segments 46, 47, and 56 are elongated and the relays 45 and 52 are shown as slow to release.

What is claimed is:

1. In a printing telegraph receiver, a plurality of selectable members, a plurality of selecting members, means for actuating any of said selecting members singly and in'combination with any other or others of said members to condition a plurality of said selectable members for actuation, means to actuate one of said conditioned members, and means associated therewith to print a character.

2. In a printing telegraph receiver, means to receive current impulses in definite timed intervals of the same miximum number of impulses for all characters to be printed, receiving relays equal in number to said maximum number of impulses for receiving each diiferent impulse, a permutation member individual to each of certain of said relays, a plurality of code bars, said relays being arranged to operate selectively any of said members singly or in combination with any other or others of said members to condition for operation a pair of said code bars, and means controlled by another relay to operate a single one of said conditioned code bars to determine the character to be printed.

3. In a printingtelegraph receiver, means to receive successive equal-timed line impulses in permutations, code bars, permutation bars shiftable by certain of said impulses to condition for operation a pair of said code bars, means responsive to a subsequent one of said impulses to cause actuation of a selected one of said pair, and means to restore the actuated permutation bars during the printing stroke.

4. In a printing telegraph receiver, a plurality of code bars, permutation bars shiftable in combinations to permit of actuation of said code bars selectively, means to actuate a code bar corresponding to the selected (haracter to be printed, a member arranged to be set by the actuated code bar, means to restore the actuated code bar and the permutation bars while leaving the member in its set position, and means to actuate the member to cause the printing of the character.

5. In a printing telegraph receiver, a power arm,a plurality of printer levers to be selectively actuated by said power arm, code bars for operatively associating a desired one of said printer levers with said power arm, permutation mechanism responsive to received current impulses to select apair of code bars, means responsive to a succeeding current impulse to actuate one of the selected pair of code bars to bring a printer lever into operative relation with said power arm, and means operative in response to the cessation. of said last-mentioned impulse to restore said actuated code bar and said permutation mechanism.

6. In a printing telegraph receiver, a power arm, a plurality of printer levers to be selectively actuated by said power arm; code bars for operatively associating a desired one of said printer levers with said power arm, permutation mechanism responsive to receive current impulses to select a pair of code bars, means'responsive to a succeeding current impulse to actuate one of the selected pair of code bars to bring a printer lever into operative relation with said power arm, and means to restore said actuated code bar and said permutation mechanism during the actuation of said printer lever by said power arm.

7. In a printing telegraph receiver for use in a system employing five impulse intervals per-character to be selected, permutation members, code bars selectable thereby, means to operate said permutation members in accordance with received impulses singly and in combinations up to more than two and less than five members in number for each character to be printed. to select a pair of said code bars, means to select one of said pair of code bars in accordance with a subsequent one of said received impulses, and means to control the printing of a do sired character by said selected code bar.

8. In a printing telegraph ILLllYQIZ'H plu rality of code bars among which selection is to be effected, members equal in number to the code bars, each member having two positions and being arranged to remain in either position until moved into the other. means to select a code bar and to operate the selected code bar to set the corresponding member, means to restore the actuated code bar in preparation for a subsequent selection, and means to operate the set member to control the printing of the character while such subsequent selection is taking place.

9. In a selecting mechanism. three or more permutation members, code bars selectable by said permutation members, means for receiving line impulses in permutations, means for positioning said permutation members in accordance with certain of the received impulses in all possible permutations of a number equal to the number of permutation members to condition a pair of said code bars for operation, and means responsive to other of the received impulses for determining which one of the selected pair of code bars is to be actuated.

10. In a printing telegraph receiver, a plurality of selecting bars, a plurality of code bars arranged transversely with respect to said selecting bars, aselecting magnet operative by line current impulses and individual to each of said selecting bars for causing the'operatioi: thereof, an electro re wees-s4 sponsive means responsive to a line current engage said type ban for pir'i'ntin iil'lQ'ChfiI impulse for actuating one of said code bars, a acter as determined by the actuation of said 10 universal bar, a plurality of plungers assocode ba'nv ciated with said universal bar and adapted to In witness" whereof, I hereunto subscribe be actuated by a code bar corresponding my name this 22nd day 0f November thereto, a type bar, and means responsive to A. D. 1919' 2i succeeding current impulse for actuating said universal bar to cause said plunger t0 HARRY A. BURGESS.

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