US1419677A - Transmitter for selective or printing telegraphs - Google Patents

Description

c. L. AND H. L. KRufi. J TRANSMITTER FOR SELECTIVE 0R PRINTING TELEGRAPHS; APPLICATION FILED JAN. 21. [921.

1,419,677, PatentedJune 13, 1922.

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C. L. AND H. L. KRUM. TRANSMITTER FOR SELECTIVE OR PRINTING TELEGRAPHS. APPLICATION FILED JAN. 21. I921. 1,1, 77, Patented June-13, 1922..

3 SHEETS-SHEET 2.

. C. L. AND H. L. KRUM.

TRANSMITTER FOR SELECTIVE 0R PRINTING TELEGRAPHS.

APPLICATION FILED JAN. 21, 1921.

1,419,677. Patented June 13, 1922.

jnverzfors STATES cnannns L. anon AND HowAnn-a. KRUM, or 'cHIcAo iLLmoIs, nssronons r .moaxnum COMPANY, or onrcaeo, rumors, a coaroanrron.

. rnnnsmrrrnn vnon SELECTIVE onrnmrme'rmomrns.

a mm man Patented June 13,1922. I

Original application filed May 17, 1915, Serial-1T0. 28,699. Patentlt'o. 1,366,812, dated January 25, 1921'.

' Divided and thisv application filed January 21, 1921. Serial No. 438,809.

To all whom it may concern:

Be it known,that we, CHAR'L'ns' L. KRUM and'HowARn L. KRUM, citizens of-the United States, and residents of Chicago, county of Cook, and Statev of Illinois, have invented certain new and useful Improvements in Transmitters for Selective or Printing Teleclear, and exact description. v

.. Thepresent application is. a division of an application filed by us in the United States Patent Office May 17,1915, Serial No.28,699,-

graphs, ofwhich the following is 'a full,

issued January 25, 1921, asPatent No. 1,366,-

The invention relates to selective orprinting telegraphs in whichthe characters or signa s are represented by combinations of impulses, and in which the transmission of the signals or combinations of impulses is controlled by the formation of a tape. ,7

The present invention seeks to provide means, whereby the tape, can be fed directly from the tape former or punching machine to" the transmitter, together with means whereby any cessation of the operation of the tape former or punching machine will automatically interrupt th transmission of signals and the tape feeding means of the transmitter and whereby the renewed operation of-the tape former or punching machine will automatically throw the transmitter ,intooperation; Further objects of the inventioniajlt to pi'ovide interrupting means .Whicl'l Will act only between completed sig nals, to provide an improved transmitting instrument having tape controlled means for stopping and starting the tape feeder and the transmission of signals. The invention consists inthe features of improvement hereinafter set forth, illustratedr-i'r'i .-the, preferred form'and arrangement in the accompanying drawings and more particularly pointed out in the appended claims.

In the drawings, 1 is a view in ele- ,vation of the improvedstation instruments.

Fig. 2 is an'elevation of the right hand end of the instrument shown in Fig. 1. Fig. 3 is 'asection on the line 3-3 of Fig. 1. Fig. 4 is. a-horizontal section on the line. 44 of Fig. 2. Fig. 5 is a diagrammatic view illustrating the arrangement of the tape-forming .or punching mechanism and the transmitter.

Fig. 6.is aview. ofa short section of the tape.

Any suitable mechanism. for forming or punching the tape may "be? employed, and can be actuated by a receiverjmechanism under control of signals transmitted from a distant station, or, as usual; by. a' set of finger g mechanism similar to keys. A --punc. that set forth-incur Letters Patent of the United 'States No, 1,182,179, dated, May 9, p 1916, isdiagrammatically illustrated inrFig.

5. The tape Ais fed through a passage or ie-block '11. The die-block 11 is provided with punches'12 for embossing, or preferably perforating the tape to form transverse rows of holes c, the perforations in the separate rows being varied so that each row repre-' The sents .lafdifierent character or. signal. tape form1ng mechanlsm' is also prov1ded with a punch for forming a longitudinal row' I perforations 13, which are adapted to be engaged by pin-toothed feed wheels to .of sma advance the tape. v

-A pivoted spring-held punch actuator 14 uideway formed bet-ween a plate 10 and a i's'connected by a rod 15 to the armature b of a magnetB and the punches '12 which form the transverse rows of perforations, arecontrolled by a-set of selecting bars 16, which are connected, to the actuator 14 to shiftable, so :that their ends can be shifted into and out of line with the punches 12.

The selecting bars 16 are actuated by a set ranged in vertical series, as set forth in the above noted .patent.

A set of finger keys 20 (only two of which are shown) have lugs 21 for engaging and variably actuating the bails. Each key operates the outermost bail,'which shifts an arm 22 carrying an insulated switch arm 23 Thus, when a key is actuated, one or .more of the selecting bars 16 are shifted and a circuit is closed from a battery wire 24 to the switch arm 23, thence from the conswing therewith, but are longitudinally.

tact of this switch by a conductor 23' through magnet B to ground, and the magnet is energized to shift the actuator 14- and operate thepunches. The actuator also advances the tape through the Qmch mechanism intermittently or step-by-step by means of a spring-held pawl 25 mounted therein and arranged to engage the teeth, of a ratchet 26. The ratchet is connected to a pintoothed feed wheel 27., which engages the longitudinal row of perforations of the tape and on the backward movement of the actuator, the ratchet and feed wheel 27 are advanced one sten by the pawl. A pressure roll 28 is arranged to hold the tape in snug engagement with the feed wheel 27 and the tape passes therefrom over a guide plate 29.

As the tape is formed and intermittently advanced by the punch mechanism, it is fed directly to the transmitter having a tape feeder, which, in the form shown, comprises a horizontal feed wheel 30 arranged-at one end of a base plate 31. The feed wheel is.

arranged behind and projects through a slot in an upright plate 32, so that its teeth extend into a tape guide-way formed between the plate 32 and a narrow, thin plate 33, as most clearly shown in Fig. 4. The teeth of the wheel 30 engage the longitudinal row of perforations 13 of the tape and advance the same through the guide-way so that the transverse rows of perforations a thereof co-operate with a vertical series of selecting switches C.

The switches C extend through a series of eccentrics 34 on an upright shaft 35, the

' series of springs 40 tend to hold the switches latter being fixed at its lower end to a small base plate 36 which is insulated from the main base plate 31. The inner, pointed ends of the switches project intothe tape guideway between the plates 32 and 33 and their outer portions extend through a guiding comb bar 37 and are provided with contacts that co-operate with a series of insulated contact screws 38 on an upright plate 39. A

inengagement with the contact screws, but

as the tape engages the inner, pointed ends.

of the switches,each switch is held out of engagement with its contact screw unless it drops into one of the perforations of the tape. Switches C are thus variably actuated to select the combination's'of impulses as the tape is advanced by the feed wheel 30. As the tape leaves the wheel 30, it is deflected forwardly by a guide plate 41.

Feed wheel 30 is mounted upon the lower end of a shaft 42 journaled in a sleeve 43 that depends from a support or head 44 swiveled upon one end of a horizontal shaft 45'. A worm 46 and a worm wheel 47 are arranged within a recess in the support or head 44 and are fixed respectively to the shafts 45 and 42 to form a driving connection between shaft 45 and feed wheel 30. Sleeve 43 has a finger-piece 48 for swinging the support 44 and parts carried thereby through a short are and move the feed wheel 30 out of the path of the tape, and this oscillating movement of the support 44, is

guided by a U-shaped guide bracket 49 (see Figs. 2 and 4) that projects rearwardly from the plate 32 and engages flattened faces on the lower end of the sleeve 43. A spring 50 extends between the bracket 49 and the finger 48 and holds the parts .in the normal position shown in Fig. 2, with a lug '51 on the sleeve 43 engaging an adjustable stop screw 52. An insulated arm 53, connected to the. head 44 and extending downwardly therefrom, engages the forked outer end of a lever 54. The inner end of this lever car ries a vertical pin 55 (see Fig. 4) which, when the support 44 is shifted, engages and shifts the switches C out of the path of the tape. A similar arrangement of tape feeder and tape-controlled selecting switches is set forth and claimed in Krum and Krum U. S. Letters Patent, No. 1,360,231, dated November 23, 1920.

As set forth in said patent and in the prior application, Serial No. 28,699of which the present application is a division the combinations of impulses selected by the tape controlled switches are imparted to the line by a rotary or sun-flower switch mechanism comprising, in the present construction, the rotary switch arm e arranged to move over a series of contacts 1, 2, 3, 4, 5

and 6 mounted upon a disk E (see Figs 1 and 5) ,also as set forth in said patent and application, the feed wheel is preferably continuouslydriven when in operation during the transmission of messages to continuously ad vance the tape. In accordance with the present invention, means is provided for stopping and starting the transmission of signals and the feed of the tape. For this purpose and since the present instrument is adapted for use with systems which do not require. the transmission at regular intervals of s nchronizing or correcting impulses: whether or not character signals are also transmitted, the sun-flower switch arm 6 is mounted on the shaft 45, which drives the tape feed whee-l, and this shaft is connected toa motor by a clutch which is controlled by the operation of the tape-forming or punching mechanism.

As shown in Figs. 1 and 2, the shaft 45 is journaled at the outer end of cross-piece- 56, which extends across a circular opening in the upper portion of a vertical bracket 57 on the base plate 31 and extends through the circular opening of a similar bracket 60. The opposite end of the shaft, as shown in dotted lines in Fig. 1, extends within a bore formed within an aligned shaft 58. The latter is journaled in the upper end of a U- shaped bracket 61 (see Figs. 1 and 3). The left-hand end of the shaft 58 is provided with a gear 62 which meshes with the teeth of a pinion 63 on the shaft of a small electric motor 64, so that the shaft 58 is continuously driven during the-operation of the are preferably represented by permutations and, to

of five impulses of'opposite polarity, h

this end, switches 9 form pole changers,

front and back contacts of whichare con-' nected by conductors 87 and 88 to the opposite sides of a divided battery H. ductor 87 also extends to thecontact 6 of the transmitter disk E. As transmitter switch 0 passes 'over contacts 1, 2, 3, 4 and 5, permutationsof positive and negative impulses varied in accordance with the ope-ration of the tape-controlling switches C and repre-.

senting the different character signals are imparted to the line. As switch 6 passes over contact 6, a negative restoring and printing impulse is transmitted.-

The transmitter switch arm 0 is fixed to an insulated hub 99 on shaft 45 and carries a brush\100 which engages the contacts of the transmitter disk E and is preferably provided with a piece of felt 101 for rethis purpose,

moving dust from the contacts. Hub 99 is engaged by an insulated brush 102 mounted on a block 90. The latter .is pivoted on bracket 91 and is, spring pressed to hold the brush against the hub.

The form of instrument shown is designed for a stat1on, such as a news-dis- -tributing point,- from which messages are transmitted to a number of receiving staions.- Such an instrument preferably has means for controlling a home recorder. For

' upon theupper annular portion of bracket 57, and a co-operating arm m is mounted on shaft 45. The home recording disk M and switch arm m are similar in constructionand arrangement to the transmitting disk and switch arm, .the disk having corto battery wire 24 and operated by a magnet R The coil of magnet R is connected by a conductor 104' to the contact of the normallycopen switch 1). Brush 1020f the transmitter switch arm is connected by. a conductor106, to the coils of a polarized relay Swhose tongue 8 local battery wire 24., The contact-of this switchv tongue is connected by a conductor 107 to the brush 108 of the recording switch arm m. Asswitches C are variably operated by the tape, pole changing magnets U: are variably energized and, by means of the pole changers g and the conductors'86, 87 and88, the contacts 1, 2, 3, 4 and 5 of the transmitter disk E are variably connected either to the positive or the negative pole a contact disk M is mounted" application above referred to,

is connected to the of the divided battery H. As the connected switch armse and m pass over their contacts in synchronism, these positive and negative impulses pass through relays and its tongue 8 is vibrated to connect and disconnect switch arm m to and from batter and thereby variably operate the magnets When one of the magnets N is energized, the corresponding switch a closes a circuit from battery wire 24 through locking switch coil of the corresponding magnet N, so that the selected magnets remain-energized until switch arm m passes over its contact 6. At this time, the transmitter switch arm e 7 s .4", conductor 105, shifted switch at, and the passes over its contact 6 and a negative impulse through the relay S connects switch arm m to battery and closes a. circuit through the magnetP. This magnet quickly shifts its switch p to close the circuit (Sf magnet R, and the latter opens the unlocking switch 1' and restores the set of magnets N. The latter can of course be employed for operating a suitable printer 'to record the transmitted messages. Brush 102 of the transmitter switch 6 may be connected, if desired,- directly to the line, but it preferably extends through the coils of a polarized transmitting relay X, having a switchv tongue m connected to a line conductor 131 and contacts are connected by conductors 130 to the positive and negative poles of a divided line battery H".

Briefly stated, the operation. of the pre-.

ferred construction shown is as follows. The tape is formed under control of fingerkeys 20 and punch-actuating magnet B, and is advanced by the intermittently operating feed wheel 27 of the tape former. Thence the tape passes around pin 81 of switch F and through the guide-way between the plates 32 and 33 of the transmitter. Here it is engaged by the feed wheel 30 and moves past the switches C. When the shafts 15 and 58 are connected by the clutchmembers, the transmitter switch 6 and the feed wheelBO are continuously rotated in definite timed relation, the gearing being such that as the switch rotates through a single revolution, the tape is advanced a space equal to the distance between adjacent transverse rows of.

perforations.

the set of As set forth in the patent and switches C are preferably arranged at right to of the transmitter disk to the opposite lay X, each character signal being followed by negative restoring impulse. If a home recorder is employed, the transmitted impulses pass through relay S and open and close the local circuit through the home, rc-

cording switch m, which, as described, variably operates a set of magnets N. and a suitable printing mechanism controlled thereby.

Contact 76 of the tape actuating'switch F is connected to the local. battery and contact 77 is connected by a conductor 138 to the coil of clutch controlling. magnet D. Normally, these contacts are engaged and the magnet energized to hold trip pin 73 in inoperative position. If the operation of the tape former is interrupted, the tension of the tape shifts switch F, opens the circuit of magnet D and the trip pin is projected into the path of clutch member 67. The latter, after the character signal then being transmitted to the line is completed, is disengaged and.the operation of the transmitting switch 6 and tape feeder 30 and also of the home-recorder, if one is employed, is arrested. As soon as the operation of the tape former relieves the tension of the tape and permits the closing of switch Fto energize magnet D and withdraw trip pin 73, the clutch members will again connect the shafts 45 and 58 to continue the feed of the tape and the transmission of the character signals.

Obviously, changes may be made in the details set forth without departure from the essentials of'the invention as defined in the claims.

We claim as our invention:

1. In selective telegraphs in which the signals are represented by combinations of impulses, the combination ofa set of tape controlled impulse selectors, a switch mechanism cooperating therewith to impart the selected impulses to the line, means for feeding the tape in timed relation to the operation of said switch mechanism, a tape former, and means controlled by the tape former and operable to automatically stop said switch mechanism and said tape feeding means only between completed signals.

2. In selective telegraphs in which the signalsare represented by combinations of impulses, the combination of a set of tape-controlled impulse selectors, a switch mechanism cooperating therewith to impart the selected impulses to the line, means for feeding the tape in timed relation to the operation of sa1d switch mechanism, a tape former, and means controlled by the tape former and operable to automatically stop and start said switch mechanism and said tape feeding means only between completed signals.

3. In selectivetelegraphs in which thesig nals are of uniform length and represented by combinations of impulses, the combination of a set of tape-controlled impulse selectors, a rotary member cooperating therewith to impart the selected impulses to the line, a tape feeder operating in timed relat on with said rotary member, a tape former,

and means under the joint control of said tapeformer and feeder for automatically arresting said rotary member and said tape feeder.

- 4. In selective telegraphs in which the signals are of uniform length and represented 'by combinations of impulses, the combination of a set of tape-controlled impulse selectors, a rotary member cooperating there with to impart the selected impulses to the line, a tape feeder operating in timed relation with said rotary member, a tape former, and means under the joint control of said tape former and feeder for automatically stopplng and starting said rotary member and said tape feeder.

5. In selective telegraphs in which the signals are represented by combinations of impulses, the combination with a set of tape controlled impulse selectors, a rotary switch mechansm cooperating therewith to impart the selected impulses to the line,,means for feeding the tape in timed relation with the operation of said switch mechanism, a tape former, and means for automatically arresting and initiating the movement of said rotary switch mechanism and said tape feeding means comprising a stop-and-start clutch and a releasing trip therefor controlled by said tape former and adapted to cooperate wilth said clutch only between completed signa s.

' 6. In selective telegraphs in which the signals are represented by cpmbinations of impulses, the combination with a set of tapecontrolled impulse selectors, a rotary switch mechanism cooperating therewith to impart the selected impulses to the line, a tape feed wh'eel operated in timed relation with said switch mechanism, a clutch and 'a cooperating trip operable only between completed signals to stop and start said rotary switch mechanism and said tape feed wheel, a tape former, and means controlled thereby for completed signals to arrest switch mechanism and said tape-feeder, a tape former, and a controlling switch for said magnet controlled by the'movementof the tape between said former and said feeder. p

8, In selective telegraphs in which the signals'are represented by combinations of impulses, 'the'combination" with a setof tapecont'r'olled impulse selectors, a rotary switch mechanism cooperating therewith to impart the selected impulses to the line, a tape feeder operated in timed relation with said switchmechanism, a stop and start clutch for said rotary switch mechanism and said tape feeder, a controlling trip for said clutch, a tape former, and means controlled thereby for operating said trip.

9. In selective telegraphs in which the signalsare represented by combinations of impulses, the combination with a set of tapecontrolled impulse selectors, a rotary switchsaid rotary the selected impulses to the line, a tape.

feeder operated in timed relation with said switch mechanism, a stop and start clutch for said rotary switch mechanism and said tape feeder, a controlling trip for said clutch, a tape former, and an electro-magnet controlled thereby for operating said trip.

10. In selective'telegraphs, a transmitter comprising a set of tape-controlled impulse selectors, a rotary switch mechanism for imparting the selected impulses to the line, a feed-wheel for the tape, a common drive shaft for operating said switch mechanism and said feed wheel in-timed relation, a stopand-start clutch for said shaft, a trip effective only between completed signals for controlling saidclutch, a tape former, and means under the joint control of said tape former and said feed wheel for operating said trip.

CHARLES L. KRUM.

HOWARD L. KRUM.

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