US2121873A - Telegraph printer - Google Patents

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Publication number
US2121873A
US2121873A US159724A US15972437A US2121873A US 2121873 A US2121873 A US 2121873A US 159724 A US159724 A US 159724A US 15972437 A US15972437 A US 15972437A US 2121873 A US2121873 A US 2121873A
Authority
US
United States
Prior art keywords
magnet
keys
members
transmitting
permutation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US159724A
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English (en)
Inventor
Hebel Martin
Gundlfinger Karl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Publication date
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Publication of US2121873A publication Critical patent/US2121873A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/0005—Hand manipulated computing devices characterised by a specific application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/10—Distributors
    • H04L13/12—Non-mechanical distributors, e.g. relay distributors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/02—Apparatus or circuits at the transmitting end
    • H04L17/04—Apparatus or circuits at the transmitting end with keyboard co-operating with code-bars
    • H04L17/06—Contact operating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/42—Transmitting circuits; Receiving circuits using mechanical distributors

Definitions

  • Type printing telegraphs employ ,as a rule trains, for example, of five current impulses for the transmission of the various signals.
  • the keys of the transmitter control an appropriate number of permutation'members which determine the operation of one or more transmitter contacts. If the permutation members are actuated directly by the keys, depression of the keys is made difficult and it has, on' this account, been proposed that the permutation members should be displaced by springs controlled by the keys.
  • a key when depressed, lies in the path of one or more permutation members and allows or prevents the setting of the selected permutation members.
  • the springs under the influence of whichthe permutation members are set are energized by a motor which .also is used to control other parts of the type printing telegraph.
  • the purpose of the invention is to simplify the in particular, to avoid the necessity of providing a motor for controlling the various parts.
  • a magnet is provided which is energized before each transmission and thus sets the permutation members and energizes their springs. Furthermore, when a transmitter key is actuated, the permutation members are released by a control member common to all the keys so that they can be set by their springs. This is effected by putting the magnet temporarily out of action. Thus, the necessity for using a driving motor to avoid direct control of the permutation members by the keys is eliminated and the keys can be struck'without being loaded by the permutation members.
  • the common controlling member is preferably such that, on being actuated, it not only causes the magnet to be put out of action but also looks the permutation members in the position which they have assumed under the influence of the depressed key until the current impulsetrain has been transmitted.
  • FIGS. 2 to 7 are detail views illustrating the positions taken up at various times by various parts of the apparatus and 7 Figures 8 and 9 show two suitable circuit arrangements for the actuation ofthe telegraph transmitter.
  • the springs bkI-bk5 arecontact springs, and are arranged so that the contacts controlled by them are reversed when the bars SB are moved.
  • the bars SB also have hook shaped ends SP ( Figure 1b) which can engage with the end PH of the armature MHA of a magnet MH.
  • a T-rail US and a further rail GS are disposed beneath guide members L which have gaps in them into which the rail US can enter.
  • the rail US is under the action of a spring UF ( Figure 1a) which tends to draw the rail forward (as seen in Figure 1) or to the left (as seen in Figures 2 to 7)
  • the rail US is connected to the armature UA of a magnet U by a part UT joined to the armature at UG.
  • This armature UA controls a pair of contacts ul and ull, the contact ul being actuated during the first part of the movement of the armature and the contact all only during the last part of the movement of the armature.
  • the T-rail US can be influenced by each and every key, the rail GS only by two'special keys T2 and TB which operate through the guide members LZ and LB and serve to effect the letterfigure and figure-letter shifts.
  • the two keys swing the rail GS in opposite directions.
  • the rail GS has a pin GA ( Figure 1b) which drops into a resilient seat GR and thus holds the rail in one or the other of itstwo positions.
  • the rail GS lies beneath the parts LP ( Figure 2) of the guide members of one of the groups of keys, 1. e., the letter keys ,or the figure keys, and thus prevents the keys of that group from being struck.
  • the lower part LK of the guide members L is serrated in accordance with'the setting of the bars SB which it is to determine.
  • the bars SB themselves could, of course, be serrated and the edge LK of the guide members L be plain.
  • the rail US can be turned on its pivot by each and every one of the guide members L.
  • Figure 2 shows the guide member Ll of a letter key and the guide member L2 of a figure key and the common rails US and GS.
  • the rail GS lies under the part LP of the guide member L2 of the figure key so that only the letter key can be struck.
  • the guide members have extensions LU which can act on the common T-rail US. If, for example, the guide member Ll is depressed, the rail US is swung to the right ( Figure 2), sliding on the right hand surface of the extension LU. This surface has two parts sloping at different angles so that the rail US is moved in two steps, the first of comparatively great and the second of comparatively small magnitude.
  • the guide members LB and LZ of the shift keys TB and T2 have the same extensions LU and LR as the guide members of the other keys. They are, however, constructed so as to be capable of actuating the rail GS so as to prevent actuation of one set of keys (letters or figures).
  • the guide member LZ has an extension LG which, on being depressed, pivots the rail GS clockwise ( Figure 5) while the left hand face of the extension LU is such that on being depressed, it pivots the rail GS counterclockwise ( Figures 6 and 7). The figure keys or the letter keys are thus prevented from being actuated.
  • the magnet MAN ( Figure 1a) is always preparatorily energized so as to remove thebars SB from the path of the guide members of the keys.
  • the contact all is actuated by the armature UA and opens the circuit for the magnet MAN.
  • the armature UA then drops and releases the bars SB.
  • the bars which have notches opposite the depressed guide member can now be lifted by their springs bk; the others remain in the pivoted position.
  • the contacts controlled by the springs bk are now actuated in accordance with the combination to be sent out.
  • a distributor is provided for transmission of the selected train of impulses.
  • the magnet U is tie-energized and opens the circuit train associated with the rail US moves out of the locking position under the action of the spring UF.
  • the depressed guide member and its key are released and are able to return into the normal position.
  • a magnet MH is provided the energization of which. is determined by thecontact ul l.
  • The'hook shaped extension PH of the armature MHA of this magnet engages in the hook ends SP of those of the bars SB which have been able to return into their normal position and beneath the hook ends of the bars which remain in the displaced position.
  • the setting of the bars SB and thus of the contacts actuated by the springs bk can be maintained independently of the position of the guide member of the depressed key, and the relay U can thus be de-energized as soon as the magnet MB is energized.
  • the five contacts controlled by the bars SB are designated lflcl-bk5.
  • the distributor controlling the transmission of the trainof current impulses' comprises six relays A to F controlled by a cadence tapper consisting of the relays N and 0.
  • the key AT When a signal is to be transmitted, the key AT is depressed so that the relay AN is energized and closesa holding circuit for itself .at its contact anl.
  • the contact an2 closes the circuit for a thermo relay Hi which heats up slowly. If no signals are sent out within a pre-determined period of time, the relay Hi closes its contact hi and thus short circuits the relay AN which releases.
  • the contact an3 closes a circuit for the magnet MAN which responds and preparatorily pivots the transmitter bars SB ( Figure 1). If, now a key is depressed for the transmission of a particular signal, the rail US and the armature UA of the relay U coupled to the rail are pivoted through the guide member L.
  • the contact 11.! l closes a circuit for the winding I of an auxiliary relay VS which is kept energized during the transmission of a signal by the contact us3.
  • the contact ul2 closes the circuit for the transmitter relay S before relay US responds.
  • the relay S controls the flow of current through the line VL by means of its contact s.
  • the contact us! of the relay VS closes a circuit for the relay N of the cadence tapper.
  • the contact 11.13 for the magnet MAN so that the latter allows its armature to drop and releases the transmitter bars for displacement by their springs.
  • the contacts bkl to bk5 are thus actuated in accordance with the current impulse the depressed key.
  • the magnet MH the armature of which holds the bars SB in the position they have assumed, is energized when the contact cs4 closes.
  • the two relays O and N of the cadence tapper work like a relay interrupter.
  • the relay N energizes the relay 0 and the latter opens the circuit for the relay N.
  • the delay in response and release of the relay N is approximately 8 milliseconds and that of the relay 0 approximately 12 milliseconds. An interval of 20 milliseconds is therefore necessary for the successive ener ization and de-energizationoi thetwo relays.
  • Each .1 impulse which ,is emittediby the relay 8 is also to have a duration'oi lid-milliseconds, At each .responseandateach release.
  • the. bars SB are blocked by the armature of the magnet MIL-the magnet MhN cannohattract .its armature.
  • the magnet MnNattract As I soon however, asthis blockinghas been released, the magnet MnNattracts its armature and paratorily pivots the bars SB At theendof the transmission of. the filth, selecting; impulse, ,the relay F is also energized, and, by means of'its contact opensthe-circuitioi the auxiliary relay V801 the transmittersothat .this'relay drops and stops th 'ev cadence tapperg.v
  • the contact 13 opens: the circuit for": the. j transmitter relay S which drops and, ,by means of its, contact -s,- reestablishes normal conditions inthe line'VL.
  • the relay UR is controlled by the contact bktand the relay VR by the-contact N05.
  • the circuit of the transmitter relay is, is by the contacts bid and bkS upon the transmission oi the fourth and fifth impulses but by the contacts m2 and 01:2 ofthe two relays UR and VR.
  • the fourth and fifth impulses determined by the contacts blclv and bk5 are stored by the relays UR, and VR.
  • the relay VS isenergized, the contact us5 closesthe circuit for the relays UR, and VR.
  • the relay U on transmission of the third impulse, the relay U is de-energized by the energization ofthe r lay DR and the depressed key is thus released, the key returnsoto its no rmal position and the bars SB: are preparatorily pivoted again by .energization of the magnet MAN. If the relays UR and'VRin sofar as'they have been energized in accordancejlwith the selected combination re.
  • a telegraph transmitter comprisinga plurality of transmitting keys, a plurality of permutation members influenced by said keys, springs acting on saidpermutation members, a magnet for displacing said permutation members against the action of their springs, acontrol member displaceable; by each-of said keys, meansifor energizing' said-magnet before each transmission,
  • a telegraph transmitter comprising. a pinrality of transmitting keys, a plurality of permutation members, springsacting on said permutation members.
  • I a magnet for, displacing said permutation members against the action of their springs, a control member displaceable by each or said-transmitting keys, means ,for energizing said magnet before each I transmission, means controlled by-said control memberfor-temporarily putting said magnet out-of action at-each actuation of said transmitting keys, means controlled by said contr'ol'rnember for locking said i; assume under the influence of their springs when said magnet is put out of action, means for sending out a train of current impulses determined by the setting of said permutation members and means for releasing said permutation members after transmission of said current impulse train.
  • 'A telegraph transmitter comprising a plurality of transmitting keys, a plurality of permutation members, springs acting on said permutation members and striving to move them against said transmitting keys, a magnet adapted to displace said permutation members against the action of their springs, a control member controlled by said transmitting keys, means for energizing said magnet before each transmission, means controlled by said control member for temporarily putting said magnet out of action at each actuation of one of said transmitting keys, magnetically controlled means for locking an actuated transmitting key in the depressed condition and means for transmitting a train of current impulses determined by the setting of said permutation members.
  • a telegraph transmitter comprising a plurality of transmitting keys, a plurality of permutation members, springs acting on said permutation members and striving to move them against said transmitting keys, a magnet for setting said permutation members against the action of their springs, a control member controlled by said transmitting keys, means for energizing said magnet before each transmission, means controlled by said control member for temporarily putting said magnet out of action at each actuation of one of said transmitting keys, a magnet for locking an actuated transmitting key in the depressed position and for holding the remaining keys against actuation and means for transmitting a train of current impulses determined by the setting of said permutation members;
  • a telegraph transmitter comprising a plurality of transmitting keys, a plurality of permutation members, springs acting on said permutation members and striving to move them against said transmitting keys, a magnet for setting said permutation members against the action of their springs, a control member controlled by said transmitting keys, means for energizing said magnet before each transmission, means controlled by said control member for temporarily putting said magnet out of action at each actuation of one of said transmitting keys, a magnet controlled by said control member for locking said permutation members in the position they assume under the influence ,oi their springs when said magnet is put out of action, means for transmitting a train of current impulses determined by the setting of said permutation members and means for releasing said locked permutation members after said train has been transmitted.
  • a telegraph transmitter comprising a plurality of transmitting keys, a plurality of permutation members, springs acting on said permutation members and urging them against said transmitting keys, a magnet adapted to displace said permutation members against the action of their springs, means for energizing said magnet before each transmission, a control member common to all said keys, a magnet acting on said control member and holding it in a position in which it locks an actuated transmitting key in the depressed position and holds the undepressed transmitting keys against actuation, contacts adapted to be actuated by said control member in its locking position whereby to put said first mentioned magnet out of action and means for transmitting a train of current impulses determined by the setting of said permutation members.
  • a telegraph transmitter as claimed in claim 1 comprising also contacts adapted to be actuated by the control member in its locking position whereby to bring into operation said current impulse transmitting means.
  • a telegraph transmitter comprising a plurality of transmitting keys, a plurality of permutation members, springs acting on said permutation members tending to move them against said transmitting keys, a magnet adapted to displace said permutation members against the action of their springs, a transmission starting key, a contact controlled by said starting key, a holding relay controlled by said contact and adapted to close a circuit for theenergization of said magnet, a control member common to all said keys, a magnet acting on said control member and adapted to hold said control member in a position in which it locks an actuated transmitting key in the depressed position and to hold the unactuated transmitting keys in the raised normal position, contacts adapted to be actuated by said control member in its locking position whereby to put said first mentioned magnet out of action and means for transmitting a train of current impulses determined by the setting of said, permutation members.
  • a telegraph transmitter as claimed in claim 8 comprising also contacts controlled by said transmitting keys during the depression of a transmitting key for energizing the magnet acting on said control member.
  • a telegraph transmitter comprising a pinrality of transmitting keys each provided with a guide member adapted to be displaced with its associated key, a plurality of permutation members, a spring acting on each of said permutation members and urging it against the guide member of a depressed transmitting key, a magnet for displacing said permutation members against the action of their springs, means for energizing said magnet before each transmission, a contact adapted on actuation to de-energize said magnet, projections on said guide members, a rail adapted to act on said projections whereby to hold the guide member of an actuated transmitting key in its displaced position and to preclude displacement of the guide members of the unactuated transmitting keys, a magnet for controlling the movement of said rail, means for energizing said magnet, said means being controlled by the guide member of a transmitting key during the first part of the movement of said key controlled by said rail in its locking position for controlling said contact and means for transmitting a train of current impulses corresponding to the setting of
  • a telegraph transmitter as claimed in claim comprising also means for putting out of action said rail controlling magnet after said current impulse train has been transmitted.
  • a telegraph transmitter as claimed in claim 10 comprising also means for locking said permutation members in the position which they assume under the influence of their springs after their setting magnet has been put out of action, said means being controlled by said impulse transmitting means during the transmission of said train, means for putting out of action said rail controlling magnet, said "means being controlled e *byI-said current impulse transmitting means after -actuation o!- said permutationmember lockin 7 means, and means torreleasing said permutation m mbers after the transmission oi said current impulse-tram: x a
  • A-telegraph transmitter comprising a'plu-g 'rali t'y or transmitting k'ey's each provided with aguide member, a plurality of permutation'members, springs acting on-said permutation members against the guide member or-a. .depressed transmittingfrkfl. contacts controlled- I 'i-jrality of transmitting keys each provided with a and 'urging them by said permutation-members, a magnet for dis-' the permutation members,
  • a telegraph transmitter comprising a pluralityof transmitting keyseach provided with a guide member, a plurality of permutationmem-fi bers, springslactin bers and urging them against the guide member 01' a depressed transmitting key, contacts controlled by said for displacing said permutation members against means'for energizing I permutation members, a magnet the action of their springs, said magnet before.
  • each transmission means ,for locking the guide member mitting key and for preventing actuation of the undepressed keys, a contact controlled by said last-mentioned means for putting out oi action the magnet for setting the permutation members, a current impulse transmitting relay, a distributor connecting said transmitting relaylsu'ccessively in circuits dependent upon the various contacts controlled by said permutation mem-' bers and means controlled by said ide member locking means for putting said distributor into action.
  • keys each provided with a guide member, -.a" plurality of permutation .members, springs acting on said-permutation members and urging said permutation members against the guide member of a depressed transmitting key, contacts controlled bysaid permutation members, a magnet for displacing said permutation members against the action of their springs, means for energizing said magnet before each transmission, means for locking the guide member of a depressed transmitting key and for preventing movement of the guide members of the undepressed keys, v
  • a telegraph transmitter as claimed in claim 16 comprising also'me'ans for releasing said guide membersatter energizationoi said storing relays and means for putting said storing relays out of action after' transmission. of va current impulse train, determined by tion members,
  • a further magnet for displacing said permutation members against the action of their springs, means for energizing said further magnet before each transmission, a contact adapted to de-energize said further magnet on being actuated by said armature when it strikes the pole-of its magnet, a current -impulse transmitting relay, contacts con trolled by said permutation members, a distributor connecting said transmitting relay successively in circuits dependent upon said permutation member contacts, a contact controlled by said armature for putting said distributor into action and means controlled by said distributor for putting said flrstmentioned magnet out of action.
  • a telegraph transmitter as claimed in claim 19, comprising also a magnet for locking said permutation members in the position which they assume under the influence of their springs.
  • means for switching in said magnet said means being controlled by the contact of the armature connected to the control member when it strikes the pole of its magnet, means actuated by said distributor during the transmission of the current impulse train for putting said magnet out of action and acting on said control member and means actuated by said distributor after the transmission oi. said current impulse train for putting out of action the magnet controlling said permutation members.
  • a telegraph transmitter comprising two groups of transmitting keys, two shift keys, guide members connected to said transmitting keys and to said shift keys, a plurality of permutation members, springs acting on said permutation members and urging them against the guide member of a depressed key, a magnet for displacing said permutation members against the action of their springs, a control member adapted to be actuated by the guide members of all said keys, means for locking the guide member of a depressed key and for preventing movement of the guide members of the remaining keys, said means being actuated by said control member on being actuated by a guide member or a key, means actuated by said locking means for putting said magnet out of action, a rail controlled by said two shift keys and always looking one of said groups of transmitting keys and means for transmitting a train of current impulses corresponding to the setting of said permutation members under the influence of their springs.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Push-Button Switches (AREA)
  • Seats For Vehicles (AREA)
  • Electromagnets (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Lock And Its Accessories (AREA)
US159724A 1936-08-23 1937-08-18 Telegraph printer Expired - Lifetime US2121873A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEH148619D DE673179C (de) 1936-08-23 1936-08-23 Tastensender fuer Typendrucktelegraphen
DEH152825D DE675416C (de) 1936-08-23 1937-09-01 Tastensender fuer Typendrucktelegraphen
DEH152824D DE676518C (de) 1936-08-23 1937-09-01 Tastensender fuer Typendrucktelegraphen

Publications (1)

Publication Number Publication Date
US2121873A true US2121873A (en) 1938-06-28

Family

ID=27429707

Family Applications (1)

Application Number Title Priority Date Filing Date
US159724A Expired - Lifetime US2121873A (en) 1936-08-23 1937-08-18 Telegraph printer

Country Status (6)

Country Link
US (1) US2121873A (de)
CH (1) CH205838A (de)
DE (3) DE673179C (de)
FR (2) FR825690A (de)
GB (2) GB492000A (de)
NL (2) NL54599C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660617A (en) * 1949-08-17 1953-11-24 Tesla Nat Corp Teleprinting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660617A (en) * 1949-08-17 1953-11-24 Tesla Nat Corp Teleprinting device

Also Published As

Publication number Publication date
NL54599C (de) 1943-05-15
GB492000A (en) 1938-09-13
FR825690A (fr) 1938-03-10
DE675416C (de) 1939-05-08
GB518100A (en) 1940-02-16
CH205838A (de) 1939-06-30
DE673179C (de) 1939-03-18
DE676518C (de) 1939-06-06
NL56351C (de) 1944-06-15
FR49857E (fr) 1939-08-22

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