US1752084A - Printing telegraph - Google Patents

Description

March 25, 1930. G 5 H|| TZ ET AL 1,752,084

PRINTING TELEGRAPH Filed, Nov. 28, 1927 5 Sheets-Sheet l March 25, 1930. G. s, HlL-rz ET AL 1,752,084

PRINTING TELEGRAPH Filed Nov. 28, 1927 3 Smeets-5h96?l 2 Il uw G. s. HlLTz ET AL 1,752,084

PRINTING TELEGRAPH March 25, 1930.

3 Sheets-Sheet 3 Filed NOV. 28, 1927 Supa/www Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE GEORGE S. HILTZ, OF BROOKLYN, NEW YORK, .AND WILLIAM F. PURCELL, 0F HO- BOXEN, NEW JERSEY, ASSIGNORS TO STOCK QUOTATION TELEGRAPH COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF NEW YORK PRINTING TELEGRAPH Application lled November 28, 1927. Serial No. 236,085.

'Ihis invention relates to an improvement in printing telegraphs and has for one oi its objects, theprovision of an improved apparatus which will work much more satisfactorily than heretofore.

In practice, a number ot receiving machines are on the same line with a single transmitter, and as these receiving machines are at remote points with regard tothe location of the transmitter, it is impossible tor the operator of the transmitter to know whether the receiving machines are recording properly or not. In order, therefore, that the receiving machines may be brought in unison with the transmitting apparatus, means are provided by the present invention whereby all of the machines on the line will be brought to unison automatically with definite relation to the number of rotations'of the shaft oit the transmitting machine. In other words, the present invention provides an apparatus whereby the receiving machines will be brought vto unison automatically at certain predetermined intervals, which intervals may bevaried as desired, in the design of the machine, and are independent of the operator.

Inasmuch as the general construction and operation of printing telegraphs is well known to those skilled in this art, the same will not be gone into in great detail herein. It will be suiicient to state that the receiving or recording machines comprise essentially escapement mechanism, spring operated so far as the scape wheel is concerned, the pawl cooperating with the scape wheel being operated by escapement magnets so wound as to be operated by currents of opposite polarity, these magnets having a common armature which is connected in some manner to the escapement pawl. The change in polarity in the eurent fed to these magnets is edected by a polar relay which, in turn is controlled by brushes cooperating with the transmitter shaft, which it will be understood, is constantly rotated except at such times that an impress is to be made by the recording machine. In these recording machines, also, an impress magnet isprovided in series with the escapement magnets, this `impress magnet being operable only when a circuit controlling the transmitter is closed, at which time the current fed to the impress magnet is no longer reversed in polarity. In other words, the impress magnet, while in series with the escapement magnets, is not operable so long as the polar relay which reverses the polarity of the current fed to the machine is operating. In such machines it is customary also to provide a magnetic clutch or some type of clutch whereby the transmitter shaft can be held stationary momentarily while an impression is being made at which time the polar relay is not operating and a current of one polarity only is being fed to the impress magnet.

In addition to all of the foregoing, the transmitting mechanism comprises a sunflower or stationary commutator provided with a trailer rotatable with the transmitter shaft, and operable when the transmitter is operated to close a circuit to the magnetic clutch to stop the transmitter and permit current of one polarity to pass through the impress magnet to effect operation of the same, and to make an impression corresponding to the key depressed or transmitter circuit closed. p

In the present invention means have been provided synchronized with the transmitter to impress current of a relatively high amperage on the line to effect the operation of stop or unisoning mechanism. We have shown this unisoning mechanism operative upon each revolution of the trailer shaft of the transmitter, but it is to be understood this is only by way of illustration, and for clarity of description, inasmuch as obviously the unisoning intervals may be varied if desired with respect to the rotation of the transmitter shaft, the object being to provide some means synchronized with the transmitter for bringing the receiving machine or machines automatically into unison.

In the accompanying drawings,

Fig. l is a side elevation oil a receiving machine embodying our invention;

Fig.' 2 is a plan view of the escapement mechanism on the line 2 2 of Fig. l;

Fig. 3 is a view of the unisoning mechanism ot Fig. l, showing the parts in slightly different position;

nets provided with a common armature 3 caused to be vibrated due to changes in polarity of the current sent thro-ugh these magnets, as will be described hereinafter.v The armature 8 has attached to it an es'capement pawl 4 adapted to cooperate with scape ivheel, 'permitting of the same to be' rotated in the direction of the arrow in Fig. 1, for example, under the action of a spring as is usual in vthis art. The scape Wheel 5 is mounted on a shaft 6', tov be referred to as thev type"k shaft, the type Wheelsl being shown in dotted lines iii-Fig. 2 and designated 7.

. rllhe movement ort-ne escapement paWlf 4 is controlled by twostops, one designated 8the other `9; Thestop- 8* is ymounted for movement in the framerlO` by: which it is carried. rlfhe movement, so far as movement toward the escapement pafWl isy concerned, being contro-lled and limited by a nut 11 andlock nut 12. 'Phe outward movement of the stop 8 is controlled by a. springxl/ anchored' to the frame 1.() atk 14, thezother end ofthe spring bearing constantly againstthe outer end of thestop 8. rhe tension of this spring is conveniently made adjustable by an'adj'ustment screw 15. As Willbe explained here:- inafter, the stop 8 at certain predetermined intervals is moved for the purpose of setting into operation-, the unisoning mechanism. y Y

This` mechanism which is adapted to .engagekand' 'cooperate with thestop 8 comprises a stop pink16 carried by ratchetpawl4, and extending parallel? to the axis of thetype shaft 6,"and this pin isadapted to4 cooperate with a unison pin 1.7 secured' directly toy the type shaft topreventfo-r a time,V rotation of theV type shaft, When the receiving or recording machine is not in unison. s Referring now' to the Wiring diagram of Fig. 7, 18 designates the usuall keyboardfof a transmitting machine shown With two keys 19 and 20, it being understood, of course, that this boa-rd actually 'is provided With the usual keys. 21 designates the4 sunliower or stationary commutator of the transmitting apparatus, the trailer 22, which `is of usual construction and which cooperates with the segments of the sunflower being4 mounted upon the rotary shaft 23 Which is geared to the shaft 24 of the transmitter. The transmitter shaft 24 is provided With a magnetic clutch illustrated diagrammatically: and designated 25. The shaft 23 is provided With `the currentpassingthrough the magnets of the system is reversed in polarity periodically for theu purpose. of effect-ingy vibration of the armature 3` of theescapement mechanism to: effect an intermittentrelease ofthe scape WheelV 5. 83y designates. theI impress magnet ivhile 34 designates a relay fon closing the circuit of the-magneticclutch 25. 36m-resistance in series with theescapement; magnets 1 and 2, andv the impress'm'agnet y30, except WhenV the contacts27 are bridgedi. Y

Upon operation of thel transmitter, as by depressiony ofthe key-19',z for example, it being understood, ofy course, that theshaf-t24 of thetransmitting apparatus is' in motion` and that the escapement mag-netsl andq2-y are receiving current sothat. the scapewheelj 5l is being intermittently rotated, and hence,y the type shaft 6, together With the type Wheel-7, a circuit is closedl toY correspondtothe key depressed,.for the purpose kof stopping the transmittershaft 24 and causingthe magnet 33 'to make the necessary or desired imprint.

. The circuit through the transmitter and thev Y various magnets, etc;,.1nav bel traced from the eositivefsid'eof the line through conductor 3 5,

ring 3.6, key 1-9, conductor 37, contact strip 38 of thev sunflower` trailer 22, When it is' in position, brush 26, conductor 39, to the magnets of the relay 34 toground.. The energization ofthe relay magnet-34 will eect op-- eration 'of its armature 40 and a circuit is nov7V made' to, the magnet 25V ofthe clutch the current passing by Way ofconductor 4.1,t armature 40; stationary contactl 42,;conductor 43', clutch magnet 25 to ground 44.. The transmitter shaft 24 will now beheld stationary', current of one polarity only Will be impressed on the line, escapement magnets-1 and 2 Will no longer vibrate they armature 3,. and the impress magnet 33 Will .now operate to effect an impression by the type Wheel 7. Upon release of the'l key 19, the circuits heretofore described as beingclosed, are again opened, the scape Wheel 5 aga-instarting into rotation. Each time, however, that the brushes orrcontacts 27 arefbridged by the strip` 28,v carried by the, trailer; shaft 23, resistance 36,normally iin series With the escapement s magnets 1 and 2 and impress magnet 30, is slaan-ted and: with this` resistance shunt'ed, current of ahigh amperage andof one polariis ity is impressed on the line and this increased amperage will effect an increased pull on the armature 3 of the escapement magnets, to the left as viewed in Fig. 1, forcing the stop 8 to the left against the tension of the spring 13, thereby permitting the stop pin 16 to move out of the path of the unison pin 17 carried by the type shaft 6. If the receiving machine is in unison with the transmitter, the brushes or contacts 27 will be bridged at the instant that the unison pin 17 is about to engage the stop pin 16, with the result that the unison pin 17 will not engage the stop pin 16 and the type wheel shaft 6 will continue to rotate. If the machine, however, should be out of unison with the transmitter at the instant the brushes or contacts 27 are bridged, the unison pin 17 will not be in position to engage the stop pin 16 and inasmuch as these brushes are bridged only momentarily, it will be obvious that the instant these brushes are no longer bridged, the stop 8 will return to its normal position under the action of its spring, and the stop pin 16 will engage the pin 17 to bring` the type shaft to rest, and it will remain at rest until the trailer shaft 23 has made another revolution, at which time, of course, the receiving machine has been brought to unison.

This arrangement, therefore, provides unisoning mechanism synchronized with the `transmitter for bringing the receiving machines into unison periodically at regular intervals which have been described and illustrated as once for every revolution of the trailer shaft rihe operation is full automatic, requiring no attention on the part of the operator whatsoever, and is independent of the key or keys operated on the keyboard 18.

In the embodiment of our invention illustrated in Figs. 4, 5 and 6, we have modified .somewhat 'the specific construction just dcscribed. In this embodiment of our invention, the escapement magnets 1 and 2, before, are provided with an armature 3 to which is attached the escapement pawl 4, cooperating with scape Wheel 5 mounted on type shaft 6. This shaft as before, has rigidly attached to it a unison pin 17. rThe stops 8 and 9 for the escapement pawl 4 in this instance are stationary. The pole pieces of the escapement magnet 2, as viewed in F ig. 4, are extended upwardly above the top of the magnet toward the escapemcnt pawl 4, as indicated at 45, and above these pole pieces we provide a stop armature 46, pivoted at 47, this armature having a plate 48 secured to it provided with an upturned flange 49 on its upper face, i. e., on the face adjacent type 1 shaft 6, the plate 48 and flange 49 being so proportioned and positioned as to lie in the path of the unison pin 17 When the machine is out of unison. The operation of this device is in principle, the same as that just described in connection with the embodiment of our invention as illustrated in Figs. 1, 2 and 3, and hence will not be described in any great detail so far as tracing the electric circuits is concerned. lllhen the brushes 27 are bridged by the Contact 28, as already described, current of one polarity and increased ainperage is fed to the escapement magnets 1 and 2, by reason of the shunting of resistance 32, to cause the armature 46 to be drawn downwardly, a viewed in Fig. 4, against the tension of the spring 50,`so that the unisoning pin 17 will not engage the flange 49, should the machine be in unison. 1f, however, the receiving` machine should be out of unison, the armature 46 will be in the position shown in Fig. 4 at the time of the arrival of the pin 17 to the position shown in the same figure, it being understood, as previously explained, that the pin 17 is fixed upon the shaft 6 with a definite relation to the time of bridging of the contacts 27. rlChe engagement of the pin 17 with the flange 49 will stop the rotation of the type shaft and the same will remain Stationary until the sha-ft 23 has brought the contact 28 into bridging position again with 4respect to the brushes or contacts 37, by which time, of course, the receiving machine will be in unison with the transmitter, and the type shaft will be allowed to resume rotation.

1n both embodiments of our invention, therefore, We have provided means operating automatically for unisoning the receivingr machines so that they will be brought into unison with the transmitter, our arrangement as illustrated and described, being such that the unisoning operation takes place once at every revolution of the trailer shaft 23 of the transmitter, although, as previously pointed out, the time intervals may be varied as desired, the desideratum being to provide unisoning mechanism automatically operable and synchronized with the transmitter.

It is to be understood that modifications may be made in the construction herein illustrated and described Within the purview of our invention.

lVhat We claim is z- 1. Printing telegraphs comprising a receiving or recording machine, unisoning mechanism for unisoning the receiving machine, an electromagnet for operating said unisoning mechanism, resistance normally in the circuit of said magnet to render the same inoperative for unisoning, and means automatically operable for periodically cutting ont said resistance to eEect operation of said magnet for unisoning.

2. Printing telegraphs comprising a receiving or recording machine, unisoning mechanism therefor, an electromagnet, resistance normally in the circuit of said magnet, and switch mechanism operating intermittently at regular intervals for shunting said resistance to cause said electromagnet to operate the unisoning mechanism.

3'; Printing telegraphs comprising a transmitter anda receiver, unisoning mechanism for the receiver, an electromagnet, resistance normally in the circuit of said electromagnet, and al switch operated bythe transmitter automatically for shunting said resistance to cause the electromagnet to operate the unisoning mechanism.

4. Printing telegraphs comprising a recording or receiving machine, escapement mechanismv there-for, comprising an escapement paWl, an electromagnetfor operating said pavvla stop pin carried'by said paWl for arresting the movement ofl the escapement mechanism to unison the machine, resistance normally iny the circuitof said magnet to renderv the same inoperative for unisoning, and means automatically operable for periodically cutting out said resistance to effect operation of said magnet for unisoning. i f

5'. Printing telegraphs comprising a recording or receiving machine, escapement mechanism therefor comprising an escapement pavvl, a stop pin carried byy said' paWl adapted to arrest the type shaft. of the re` ceiver to unison the machine, an electromagnet for vibrating said paWl, resistance normally in the circuit of said magnet to render the same inoperative and means operable to periodi-cally cut out said resistance to ei'fect an abnormal movement of ,saidv pavvl and stop pin Whereby the movement 'of the 'type .shaft will only be arrested if the record! ing machine is not in unison. n

6". A recording printing telegraph comprising a scape Wheel, an escapement paWl controlling the movement thereof, a unisoning arm movingv with saidV scapewheel, a stop pinv carried by said pavvl and adapted to be interposedV in the path of said' unisoning arm to stop the unisoning arm only 'when the recording machine is out of unison, said pin bein-gy out of the path of said arm at all times when the machine is in unison. Y

7. A recording printing telegraph comprising a scape Wheel, 'an escapement paWl controlling the movement thereof, a stop pin carried by the pawl, a unisoning arm moving With the scape Wheel, amovable stop'for said paWl, said stop being moved periodically to non-stopping position to permit said pawl to-,have an increased travel tocarry saidV stop pin out 'of the path of the unisoning arm When the machine is in unison, this movement being so controlled that the stop pin vvillr be interposed in the path of the unisoning arm when the machine is out of unison.

This specification signed this 25th day of Nov.,192f. l.

GEORGE S. HILTZ. This-specitication signed this 25th; day of Nov.,1927. i Y WILLIAM F. PURCELL,

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