US1273499A - Telegraphic apparatus. - Google Patents

Description

,P. KAEHLER. TELEGRAPHIC APPARATUS. APPLICATION [FILED APR. 4. I913.

Patented July 23, 1918.

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P. KAEHLER.

TELEGRAPHIC APPARATUS.

APPLlCATION FILED APR.4. m3.

Patented July 23, 1918.

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PAUL KA'EHLER, or BERLIN, GERMANY.

TELEGRAFHIC APPARATUS.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed April 4, 191 3' Serial No. 758,961.

1 '0 all whom it may concern Be it known that I, PAUL KAiiiinnu, engineer, a subject of the German Ifhnperor, and resident of Berlin, Germany, have invented new and useful Improvements in Telegraphic Apparatus, of which the following is a specification.

In the drawings the invention is shown in two constructional forms which new parts are required on one of the known Hughes type-wheiel printing telegraphs in order to, secure the advantages of the present inven-. tion.

For information as to the Hughes telegraph reference may be had to Tim Hughes rt" Bmulol- TeZeg 1}. p/L .s-, by Arthur Crotch, London, 8. Rentell & 00., 1908.

Figure 1 is a sideelevation, shown partly in section, of a Hughes telegraph fitted with the new parts according to the present invention.

Fig. 2 is part of the tape as produced according to the present invention, to be used for the automatic transmission.

Fig. 3 is the printing-lever and shaft of a Hughes telegraph with the releasing lever and the parts required according to the present invention in a somewhat modified form.

Fig. 4 is. a section on the line (3-D seen from the left through the lower punching hole and the extended printing lever.

Fig. 5 is a top view of various parts of the transmitter.

Fig. 6 is a piece of the perforated tape as it is used for the automatic transmission of telegrams by means of the transmitter shown in Figs. 3 and 5.

Fig. 7 is a top. view of the arrangement according to Fig, 3 for perforating the tape.

As the Hughes telegraph may be considered as known and besides does not form any part of the present invention only such parts of the same have been indicated in the drawing which were necessary to show how the new parts are fitted to the Hughes telegraph and the course of the current (as fa as required for the description).

In the drawings (1. is the typewheel shaft, h the known type-wheel which is driven and set in known in an'ncr. Attached to the type wheel is a gear wheel .2 with say teeth. 'lhis gear wheel meshes with another gear wheel 2 with, say 28 teeth, which fitted on a shaft parallel to the shaft (1 The gear wheel 2 which'is likewise fitted to shaft 5 meshes with. a gear Wheel .24, which is fitted on a shaft 7 disposed parallel, to shafts a, and Z). Both the last mentioned gears have each say 28 teeth. On shaft f is further fitted a toothed guide wheel .2 which ongages with its teeth in the guide holes in the tape shown in Fig. 2 and thereby advances the same when the gear revolves; This guide wheel has 28 teeth corresponding with the 28 type panels of the type-wheel, With the ratio of gearing the tape to be perforated will be uniformly advanced, In order to secure an intermittent motion so that the tape is stationary during the pcitto-, rating act-ion, each second tooth is broken, away in wheel 2 In consequence thereof the tape will stop for each second tooth.

The rotation of the type-wheel by one type-panel (double-panel) willv now corre-. spond to each step of the tape by one tooth of a. In order to prevent an unintended rotation of shaft f, which may occur owing to the absence of each second tooth in wheel 2 a locking lever (Z is fitted to shaft 7), and engages under action of a spring 0 between the teeth of wheel .2 In thisposition it arrests the wheel 2. As soon, however, as wheel 2 is set in motion, the nose of lever (5 will be forced froin the gap between the teeth owing to its beveled bearing surfaces, and will reengage in the next gap and arrest wheel 2 until wheel 2 again imparts a fresh movement to wheel 2 The printing lever 0 of the Hughes tele graph which is in known manner forced upward by the printing cam on printing shaft 0/; for printing a signal received, is extended beyond its axisoto the right (arm 40) and carries on this extension 40 one or more punches 70, according to the number of holes in the respective signal; so for example 2 holes y each are punched for cach signal in the tape according to Fig. 2. These punches 7r; act on the tape 9 which is guided between the guide plates Z and m and over the guide wheel .2.

Owing to the rigid connection between ,0 and it) a punching motion of the punch will (,Ol'ltSPOl'Vl to each printing motion of the printing lcvcr. It, for example each 5th sign is printed, the tape wilt rcccive holcs, the distance between which corresponds to 5 teeth of wheel 2 as a cgmsequcnce of the above described arrangement, The distance between the signal holes in the tape therefore always is in a certain relation to" the distance of the types on the type-wheel e ployed for printing the respective signals. If the meaning of a given punched signal on the tape is known, the meaning of the other signals on the same tape is given by their distance from this known signal.

.'Telegraphing always-commences after the synchronous running of the type-wheel apparatus has been insured with the transmission of a starting signal. Therewith the first series of holes in the tape is known as to its,reading and thus also the following series.

For automatically transmitting messages with such a perforated tape on the same apparatus which perforated the tape, or on another Hughes telegraph, t-he said Hughes telegraphs both at the transmitting and at the receiving station effecting in known manner the synchronism and the printing of the messages both for control and delivery, the transmitting Hughes telegraph is provided with an extension of its printing lever to the left side, which extension has at its lower end a contact 1". At the bifur cated lower end 7l of the printing lever one or several feelers a are arranged accordingv to the number of holes for the individual signals, which feelers bear, when the lever a is at rest, on the tape, which is guided on the one side by the roller 9 and the guide wheel .2 and on the other side between the plates 0' and p. The tape is therefore advanced in the same manner as during the perforating operation by the action of wheel 2 During the transmitting .of messages, however, the tape does not lie between the plates Z, on but passes under the roller 9. A force acting in the direction of the arrow A will keep the tape under tension.

' When the type-wheel is at -rest the start'- ing signal is then in printing positionthe tape is introduced between the perforated plates. '0 and 29 so far that the starting signal comes to lie under the feelers n. The printing lever'o with the feeler n sinks down until contact 1* bears on contact 3. This closes the circuit, and the current will pass from receiving station, the type-wheel of whichwill be set in operation. At the same time the releasing lever 'u is turned at the transmitting station by the sinking of lever o and by means of a pin and the connecting bar co, whereby in known manner printing shaft 00 is engaged. The known correcting cam effects the starting of the type wheel and the printing lever (the printing lever (1' is thrown upward by, the printing cam 7.0). The contact 1" removes from the contact 5, the feelers leave the holes in the tape. During the downward movement of the printing lever the movement of the type wheel (the typewheel shaft) will by means of the gearing 2 2" described and the guide wheel 2' effectthe feed of the tape. On their return the feelers n will either meet the solid tape (and the contacts 1 and 8 cannot contact), or the following perforated signal. The operation is now repeated. If this following signal is five spaces behind the first signal, the feeler can transmit this signal owing to the tape being fed in the described manner by 2 if also on the type wheel the 5th signal after the starting signal is in printing position. As we, vice versa, have seen in perforating the tape, that when the 5th signal is printed, the hole will be punched at a distance of 5 spaces from the preceding signal, now in transmitting the sametypes will be printed by aid of the perforated tape as in perforating the tape, or, in other words, we have a duplicate of the telegram transmitted.

In the tape 9 in Fig. 2 the guide holes 2' and the current holes 3 are shown in two modifications, (group I and H). In group I one current hole is provided for each signal at each side of a guide hole, in group II the two current holes of a. signal alternate by half the distance of the guide holes. WVhereas in the modification according to Figs. 12 the signal holes are punched behind each other in the direction of travel of the tape the modification according to Figs. 37 show the preparation and the use of the shortened tape, in which the signal holes may be punched in 4 rows disposed vertically or obliquely next to each other.

In Fig. 6 each spot on the tape, at which a hole may be punched is indicated by a small cross. In Fig. 3, of the known Hughes telegraph only the printing lever c with the printing roller 45 and the printing shaft w and the printing cam 7 O, besides the releasing lever v are shown. The printing lever c is extended to the right beyond its fulcrum and has at the end of this extension 40 a :nose

10 (Figs. 3. and 4). the same as in Fig. 1, is driven by the wheel 2 two eccentrics or cams 1 and 2 are keyed alternating by 1/4 stroke. By their rotation they reciprocate in a rectilinear direction 611 the shaft f, which,

two plates 3 and 4 in the guide 5. In the right end of each plate are fitted each two punches 6, 7 and S, 9, respectively. These punches bear on the flat springs 11, so that when atrest, the punches do not project be the punches vertically from each other in each plate is equal to the stroke of the cam, the distance from thecenter of the respective cam for punch 6 and 8, and 7 and 9, respectively are equal and such that, at given posi tions of the cams each punchwill be above holes in the stationary plate 30 provided in.

the line CD (Figs. 3 and 7). In consequence of the arrangement described there will always be only one punch beneath the nose 10 and overthe row of holes CI), c. in matching position according to lfiigs. 3 and-7 punch 7 is in punching position.

The tape to be perforated on the arrival of a telegraphic message is placed between the plate 30 and the plates 3 and t and intermittently advanced by one space of the guide holes by means of a guide wheel .2 after each complete rotation of shaft (-or the cams respectively).

VV-hen, after syncln 'onism has been established the first signal current arrives in known manner from the transmitting station, the type wheels will start in known manner, the printing lever will move upward, while the starting signal is in printing position. Thereby the extension is lowered, the nose 10 of the same bearson the punch 7 in punching position and drives the same in the third row of holes from the top through the tape.

Now the type wheel is revolved by 1/28 of its circumference l panel, so that f turns by 1/4 circumference contrary to the clockhand and punch 9 moves into punching position. When the type wheel revolves further by 1/28 the tape is advanced by one space, cross row II is then in punching position, punch 6 is above it, type a in pr nting position, and .a further rotation punches S. 7, 9 and the types b, c, d, then advance to cross row III. If the word Esau is to be transmitted, the type c is now printed, the printing lever shoots up, and at the receiving station besides the printed character also a hole is punched into the third cross row, 1st longitudinal row from below, because at the moment punch 6 was in punching position. The operation is a corresponding one with the other types.

In order to automatically transmit the telegram by means of the said perforated tape in the same succession of signals received, a transmitting attachment (Fig. 2-3 on the left and Fig. 5) with four feelers 12, 13, 1 15 is fitted to the transmitting Hughes telegraph. The feelers rock, each independently, on the shaft 16, which is journaled in the printing lever 0. Each has a. nose 18 which; bears on the roller 17 disposed beneath. This roller has four recesses IIV. alternating by 90, in which, having the length of 1/4 circumference, alternately one nose 18 of each fceler can engage in the succession I. III, II, IV according to the succession of the punches 6, 8, 7, 9, while the other three noses of the feelers bear on the solid part of the roller.

The perforated tape is introduced between the guide plates 19, 20, which contain four holes for the four feelers. Into the four holes of plate 20 project four contacts The t 'ansmitting and the sending ap- 'iaratus are set, in known manner, after svnchronism has been established, c. the type wheels are arrested at the starting nail. The roller coupled by a simple gearing with the ratio 1 :7 with the type wheel or the type wheel shaft, it will, therefore, revolve .tlnrough a right angle, when the type wheel turns by 1/28 of its circumference one type panel.

After each revolution of the roller the tape is advanced by one guide hole. If the cross row I with the punched starting signal is now under the feelers, first feelcr 12 will be released, then 14-, 13, 15. A there is a punched signal under 13, the feeler will sink down, the contacts will contact, and the current will pass from the battery B over 22, spring 23, feeler 12, contact 21. into the line conductor to the receiving apparatus, through which it will flow in known manner (as indicated by dotted lines in Fig. 1) and return through the ground to B The current impulse will engage in known manner the type wheel, and the printing lever will be operated.

The shaft 17 revolves further, the feeler 13 is lifted out, the circuit is broken. After the type wheel has turned by 1/28, the roller by 1 4, feeler 15 is free, the tape is again advanced. ("ross row II will now lie under the feelers. Afte a rotation by 4/28 or 4/4 circumference, respectively, the cross row III will be in position, and after a further rotation feeler 12 will sink into the signal hole and a current despatched. In the receiving apparatus the (3th signal after the starting signal, viz. type e is printed. This w: s also the type transmitted by the signal hole. The following telegraphic signals are transn'iitted in a corresponding manner. In order that the transmitting apparatus also prints, connecting rods are attached to the feelers 12 to 15. These coimecting rods i l will pull. down the releasing lever '0 when the feelers sink down. The printing shaft :1: is coupled in known manner, the printing lover (I is shot up, the feelers are, for a moment all lifted out and operate again in the manner described after the printing lever has returned into its initial position.

It is obvious that those skilled in the art may vary the details of construction and arrangrnnents of parts without departing from the spirit of my invention, and therefore I do not wish to be limited to such features except as may be required by the claims.

I claim:

1. In a type wheel printing telegraph. having a printing lever, the combination of a punching device operated by the movement of the printing lever for receiving the telegraphic message transmitted in form of hole signals in a tape, and a feed device for this tape, which moves in accompaniment to the movement of the type Wheel, and of devices for transmitting the telegram recorded on the tape, operated by the movement of the printing lever, substantially as described.

2. In a type wheel printing telegraph, having a printing lever, the arrangement of a punching device operated by the printing lever, including several punches, and a device for moving the said punches inde pendently and successively into and out of operative position, substantially as described.

' 3. In a type wheel printing telegraph having a printing lever, the combination of tape perforating mechanism operated by said printing lever, and comprising a plurality of punches actuated from said printing lever, cam means for moving said punches successively into and out of operative position, and means for holding the tape against movementbeneath said punches throughout the cycle of operation of said punches, substantially as described.

4:. In a type wheel printing telegraph having a printing lever, the combination of tape perforating mechanism associated with said printing lever, and transmitting means COIIle prising a plurality of contacts, and means for normally holding said contacts out of engagement with the perforated tape but permitting the contacts to successively and momentarily move into engagement there- With, substantially as described.

5. In a type wheel printing telegraph having a printing lever, the combination of tape perforating means associated With said printing lever, and transmitting means'comprising a plurality of levers carried on said printing lever and arranged transversely of the tape, projections on each of said levers, and a drum provided with a plurality of recesses therein arranged to successively receive the projections on said levers to permit the same to descend into contact with the perforated tape, substantially, as described.

V 6. In atype Wheel printing telegraph having a printing lever, the combination of tape perforating means associated with said printing lever, and comprising a plurality of punches arranged to be actuated from said lever, means for moving said punches into and out of operative position, and transmitting mechanism comprising a plurality copies 0! thiepatent may be obtained for of contacts carried on said printing lever and normally arranged out of engagement with the perforated tape, and means for permitting said contacts to descend into engagement with the perforated tape, substantially as described. o

7 In a type Wheel printing telegraph having a printing lever, the combination of tape perforating means associated with said lever and comprising a plurality of punches arranged to be actuated from said printing lever, means for moving said punches into and out of operative position, transmitting mechanism comprising a plurality of levers pivotally mounted on said printing lever, projections on said levers, a cam contact arranged to be encountered by each of said levers, and a continuously-rotating drum provided with a plurality of recesses arranged to receive. the projections on-said tive position, means for holding said tape against movement beneath said punches throughout the cycle of movement thereof, transmitting mechanism associated with said printing lever comprising a die arranged to receive the perforated tape, a contact associated with said'die, a plurality of levers I pivoted on said printing lever and arranged to encounter said contact and close a circuittherethrough, a projection on each of said levers, and a continuously-rotating drum arranged to normally hold said levers out of contact with the perforated tape and provided with a plurality of recesses for the reception of said projections, whereby to permit the levers to descend into engagement with-the perforated tape, substantially as described. 7

In testimony that I claim the foregoing as my invention I have signed my'name in presence of two witnesses, this twenty-see 0nd day of March, 1913.

Witnesses I WVOLDEMAR I-IAur'r HENRY HAsrER.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0. r

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