US1972289A - Automatic transmitter key for distress signals - Google Patents

Automatic transmitter key for distress signals Download PDF

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Publication number
US1972289A
US1972289A US364617A US36461729A US1972289A US 1972289 A US1972289 A US 1972289A US 364617 A US364617 A US 364617A US 36461729 A US36461729 A US 36461729A US 1972289 A US1972289 A US 1972289A
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United States
Prior art keywords
contact
brush
circuit
motor
relay
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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
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US364617A
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English (en)
Inventor
Chauveau Louis Lucien Eugene
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Individual
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Individual
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Publication of US1972289A publication Critical patent/US1972289A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/04—Apparatus or circuits at the transmitting end
    • H04L15/22—Apparatus or circuits for sending one or a restricted number of signals, e.g. distress signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits

Definitions

  • the present invention relates to improvements upon apparatus disclosed in British Patent No. 803,839, and objects of these improvements are (l) to insure stopping the automatic signal- 5 ling apparatus in a definite position corresponding to the end of the signal, and (2) to allow of and cause the transmission automatically by said apparatus of another signal as contemplated at the present time by international radio committees.
  • Figure 2 illustrates a modification 0! the arrangement 0! Figure 1.
  • Signalling apparatus or the type involved here includes, see Figure 1, a location plate LP, a
  • the location plate which serves to transmit the position of the device which is sending the signal, comprises a series or conductors No-Nn'corresponding respectively to the digits 0-9. Placed at right angles to these conducgo tors are 9 conductive guide bars Rl-RB, each of which carries a contact K adapted to contact also with the conductors; the guide bar R1 corresponds to the hundreds, R2 to the tens" and R3 to the units" of the longitude degrees v respectively, and R4 to the tens and R5 to the "units" of the longitude minutes respectively.
  • Rr-Ra correspond respectively to the "tens and units of degrees and minutes of latitude.
  • the location plate is shown in plan in Figure 1 and, plan in said figure in end elevation also.
  • Theloeation plate is-associated with a switch 81 adapted to contact with either of two contacts North and South and a switch S2 to con- 5 tact with either of two contacts East and West.
  • the code drum CD comprises an insulated s5 drum T mounted on a shaft 8 driven by a small are 14 brushes, 09 and N. S. E. and W., ar-
  • the drum '1 Around the'periphery oi the drum '1 are arranged two metallic members P1, P2 shaped as shown and electrically connected to the shaft A.
  • the brushes are fixed and the drum being rotatable in the direction of the arrow F, it will be o 9 will, during contact with parts of 7a the corresponding digit, for example, the brush '4 makes contact equivalent to 4 dots and a dash, brush 7 two dashes and three dots, etc. Similarly the brush S which corresponds to South will 15 contact for periods equivalent to 3 dots, the brush W corresponding to West making contact equivalent to a dot and 2 dashes.
  • the identification disk IND comprises a metallic disk having portions corresponding to the name of the ship in Morse code. The space between these portions is -filled with insulating material and the disk is mounted on a shaft at one end of the drum CD. A brush I makes contact with the circumference of the disk.
  • the identification disk is separate from the drum '1 to facilitate construction, the disk, of course, varying "for difierent ships.
  • the S. O. S. disk is formed similar to the indicating disk but is provided with portions corresponding to the S. O. S. signal; a brush SO contacts with this disk which is so mounted at the end of the shaft as to be easily detachable, so as to allow it to be replaced by code message disks, corresponding to a predetermined signal.
  • the distributor comprises a brush BA fast with a ratchet wheel R.
  • the main shaft Bearries a cam CA.
  • the cam CA advances the ratchet wheel R one tooth through a connecting rod B1 and pawl CL.
  • a counter pawl CCL holds the ratchet wheel in its positions.
  • the brush BA is displaced across a series of 17 contacts or a commutator with 17 segments Ll-Ll'l. The first three contacts or segments are connected to the brush S0 of the S. 0. 8. disk, the next five are connected to the bars R1Rs respectively, the no are insulated.
  • contact L9 is connected to the switch 82, contacts Lit-L13 are connected to the bars Eta-Re respectively, contact L14 to switch S1, and contacts L15 and Lm to the brush I of the identification disk.
  • the purpose of L11 will appear hereinafter.
  • the motor M is connected to the source of energy connected with terminals C1, C2 and drives the shaft S in the directionof the arrow.
  • the cam CA actuates the connecting rod B1, the ratchet wheel R ad-. vances one step, and the brush BA contacts with the contact Ll.
  • the brush S0 of the S. O. S. disk is connected to the contact while the disk itself is connected to the terminal M2 through the shaft A.
  • the S. O. 8. signal is therefore transmitted once from a radio transmitter, not shown, during the first revolution of the drum CD. 'At the end of this revolution the cam CA again operates the connecting rod B1, brush BA passes to contact La and again connects the brush SO, and the S. O. 3. signal is transmitted at second time during the second revolution. At the end of this revolution the brush BA passes to contact In and the S. O. 8. signal is transmitted a third time.
  • the h BA passes to contact L; which is connected to the bar R1 whose contact is in contact with brush 0 of the drum T through-the conductor No.
  • the digit 0 is transmitted via terminals Mz'and MTN.
  • the brush passes to L5 which is connected to R2 whose contact is in contact with N3 connected to brush 3.
  • the digit 3 is transmitted via the terminals M2 and MN to the radio transmitter.
  • the brush BA passes to the contact L15, the brush 1' is connected to the terminal M1, the disk IND being connected to the shaft S and terminal M2.
  • the name will thus be transmitted during the fifteenth revolution, the same operation occurring during the sixteenth revolution.
  • the energizing cirhit for the call device may be connected as shown in Figure 1 and may include the control devices and improvements now to be described.
  • a source of energy has one terminal connected to the motor directly and the other terminal adapted to be connected thereto by way of one pole of a double pole switch, the other pole of which connects the brush BA to one side of the radio transmitter apparatus, the other side of the radio transmitter apparatus being connected to a brush on the code drum shaft.
  • the two-pole circuit-breaker disclosed in the patent is replaced by acingle-pole reversing switch I and as the terminals C1 and C2 are connected with the poles of the source, as shown in Figure 1, the brush EA will be directly united with theterminal M1, the latter being associated with the negative pole of a coon source not shown, and terminal M2 with the manipulating key relay MN causing transmission from the radio equipment.
  • terminal G is tly united with the negative pole of the source, and tels A and FN are united between each other as shown in Fig. 1.
  • the relay GA is blocked (guarded) by its contact G2 which completes the circuit through i from the positive tel of the source to C1 toterminal 8 of G1, G2 winding 1, G to the negative terminal oi the source, while the motor M is fed by way of contact 4 of G1 through the circuit 01, 4, M, (32, with the result that the motor is started up and the apparatus is rendered operative to key a radio transmitter, as described hereinbefora
  • the motor will continue to run as long as the reverser switch 1' remains in position on MA, and if, at some instant or another, the said switch is placed in the stop position on contact AR,
  • This device comprises (see Figure 2) a distributor DS directly mounted upon a. shalt B revolving at the rate of one rotation per minute, the said shaft being driven by a motor (not shown).
  • This distributor DS comprises twelve conducting contact studs separated by insulating intervals or spacers.
  • This distributor is rotated under a brushor wiper bl. The assembly is disposed in such a way that the time of contact '1 between wiper hi and the contact studs will be four seconds separated by intervals of one second. This device is therefore suited to send out the alarm signal.
  • a cam CA 1 Upon the shaft B is also mounted a cam CA 1 having a notch wherein engages a lock or pawl VR which stops the movement.
  • the cam CA further bears a small contact PC which in the course of rotation of the shaft comes to make contact with a brush b2.
  • the contact PC has a definite position being so chosen that it will strike the brush 112 only at the end of each rotation of CA and US a slight instant before the notch in the cam comes to be placed before or in front of the lock or latch VR.
  • the lock VR is kept engaged in the cam by the agency of a spring 1', and disengagement therewith is accomplishable by an electromagnet DV when the latter is energized.
  • the said electromagnet DV when actuated opens the circuit of the winding 1 of the blocking or holding relay GA at C3.
  • a stopping relay ART is engaged by closing of the contact PC, and the brush b2 so as to interrupt the circuit of DV and thereby liberate or release the lock VR.
  • the contact stud PC passes on the brush b2, the electromagnet ART is energized by circuit PC, 112, ART, R1, G2, MA and C1, and it interrupts the circuit of DV whereby the lock VB. is released, so that the latter comes to engage in the notch of the cam CA and stops the transmission of the alarm signal.
  • the contact PC passes beyond the brush b2.
  • the relay ART remains still energized by way of its working contact wk, which has moved to the left so that ART receives negative current by way of terminal FN, L17, BA, M1, C2 and the negative terminal of the source.
  • the brush BA comes to be positioned again upon the stud L17.
  • the electromagnet ART is then at rest, the relay DV is energized, and this causes the breaking at contact 03 of the circuit of GA and results in the stopping of the motor M.
  • the cam CA is unlocked so that DS and CA can rotate and the alarm signal is sent out again, and the same cycle is repeated over and over again; indeed, as long as the reversing or throw-over switch I is in the operating position MA, the alarm signal and the distress signalwill be sent out successively and alternately.
  • the contact C3 is open when DV is energized.
  • DV is energized when BA reaches L17 because the following circuit through DV is completed: positive terminal of the source, C1, holding contact 3 of GA, R, the winding of DV, the contact of ART, which is closed, terminal FN, contact Ln, arm BA, terminal Ml, terminal C2, and the minus terminal of the source.
  • this relay DV
  • this relay is energized when BA becomes positioned upon contact Ln with the result that the motor M is arrested with BA staying in this position.
  • the keepers of GA open the contacts 3 and 4 and DV ceases to be energized since its circuit is broken at 3. All of the relays become deenergized and the entire apparatus comes to rest.
  • the locking means VR drops into the notch in the disk CA, preventing rotation of the disk and the distributor B8.
  • alarm signals followed by distress signals may be sent out continuously and insequence by merely starting the i apparatus as described hereinbefore, and leaving the switch I in contact with contact MA, or a single alarm signal followed by a single distress signal may be sent out by moving the contact I into a position bearing on contact AR some time after the distributor DS has stopped rotating and the motor M has started to rotate so that arm BA has left contact L17. It follows, of course, that any desired number of the signalling operations may be completed in sequence before the apparatus is stopped. t
  • an automatic electric distress-signal transmitter apparatus comprising a plurality of contacts, a rotatable wiper adapted when rotated to make contact with the contacts, means for forming electric circuits each corresponding to a signal, each of said circuits passing through a contact of the distributor and the wiper, an electric motor for driving said wiper and causing said wiper to bear on all of said contacts in cyclic order, a rotary keying device, a plurality of electric circuits corresponding to supplementary signals, said circuits each including a contact adapted to be closed by retation of said keying device,-means for driving the keying device and simultaneously stopping the motor, and for driving the motor and simultaneously stopping the keying device, and means for stopping the movement of the assembly of the system when the wiper is in a definite position independently of the time when the control means of the said means for stopping have been 2.
  • a distributor comprising a plurality of contacts, a rotatable wiper adapted to make contact with said contacts, means for forming electric circuits each corresponding to a signaLand each of said circuits being closed through a contact of said distributor and the wiper, an electric motor for rotating said wiper and causing said wiper to bear on each of the contacts in cyclic order, an energizing circuit for said motor, a rotary keying device, an electrical circuit periodically broken to form supplementary signals, said circuit including a contact adapted to be intermittently opened and closed by rotation of said keying device, a rotational body integral with the keying device, an electrical line, means on said body for closing and opening the circuit of said electrical line in a definite position during rotation, a relay associated with a contact on said distributor, a second relay associated with said line, means for stopp s rotation of said body immediately after the opening of the said line, the second relay and stopping means being controlled by said relay associated with said distributor, said second relay associated
  • third relay-whose energizing circuit is 10() controlled by the first relay said third relay controlling the circuit of the said electric motor, a starting switch, a potential source, means for connecting one pole of the potential-source with the 1 first and the third relay at the same time to energize the same when the switch is positioned upon a certain or definite contact, and means for maintaining energization of the third relay between the times when the switch leaves the said contact and the instant when no and said driving means when said automatic signals have been sent including a distributor driven by a motor and arranged to complete a circuit when said distributor reaches a predetermined position of rotation, as.
  • second relay connected with said circuit and having means to deenergize said first 111.; ed relay and deenergize said driving meansresponsive to the operation of said second relay, means for sending out an alarm 1 when said driving means is inoperative, and means-responsive to the termination of the alarm signal for rendering said driving means operative and acting to again energize the first relay.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Relay Circuits (AREA)
  • Control Of Position Or Direction (AREA)
US364617A 1928-01-10 1929-05-20 Automatic transmitter key for distress signals Expired - Lifetime US1972289A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR660951T 1928-01-10
FR35675T 1928-05-19

Publications (1)

Publication Number Publication Date
US1972289A true US1972289A (en) 1934-09-04

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ID=26182665

Family Applications (1)

Application Number Title Priority Date Filing Date
US364617A Expired - Lifetime US1972289A (en) 1928-01-10 1929-05-20 Automatic transmitter key for distress signals

Country Status (5)

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US (1) US1972289A (en)van)
BE (2) BE360486A (en)van)
DE (1) DE489657C (en)van)
FR (2) FR660951A (en)van)
GB (2) GB303839A (en)van)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466099A (en) * 1947-01-08 1949-04-05 Hansen Carlos Apparatus for transmission of radiotelegraphic signals relating to sea or river levels at the site of installation
US2487778A (en) * 1948-01-29 1949-11-15 Atlas David Automatic altimeter setting indicator and transmitter
US2499606A (en) * 1948-07-16 1950-03-07 Bell Telephone Labor Inc Preset type telephone dialer with pulse generating transformers
US2522119A (en) * 1948-06-14 1950-09-12 Kaelin Pierre Recording device for telephone transmitters
US2537188A (en) * 1948-06-14 1951-01-09 Kaelin Pierre Automatic telephone station selector set for transmitting station numbers
US2575342A (en) * 1949-06-02 1951-11-20 Darrin H Gridley Position sensing device
US2584997A (en) * 1949-03-02 1952-02-12 Syrl K Ferguson Message timing device
US2587635A (en) * 1948-06-29 1952-03-04 Bell Telephone Labor Inc Spaced-pulse impulse sender
US2588397A (en) * 1948-06-29 1952-03-11 Bell Telephone Labor Inc Spaced-pulse impulse sender
US2590885A (en) * 1949-12-08 1952-04-01 Bell Telephone Labor Inc Spaced-pulse impulse sender
US2620390A (en) * 1950-07-03 1952-12-02 Charles E Sunderland Automatic emergency keyer unit
US2716155A (en) * 1952-06-20 1955-08-23 Nat Res Dev Teleprinting apparatus
US2739298A (en) * 1953-01-07 1956-03-20 Bell Telephone Labor Inc Multifrequency high speed calling signal generator
US2746680A (en) * 1952-07-01 1956-05-22 Maul Michael Record controlled machine with cross connecting board
US2761894A (en) * 1946-05-17 1956-09-04 Bell Telephone Labor Inc Telegraph switching system with message numbering
US2768238A (en) * 1952-03-17 1956-10-23 Ben W Risinger Automatic signaling device
US2794073A (en) * 1952-09-10 1957-05-28 Bell Telephone Laoboratories I Cross bar translator switch
US2826752A (en) * 1953-11-19 1958-03-11 Eagle Signal Corp Systems permitting response by only selected units of those connected to a single channel
US2866185A (en) * 1953-02-25 1958-12-23 Stanley S Brody Universal navigation station identification keyer
US2890432A (en) * 1956-09-26 1959-06-09 Robotron Corp Apparatus and method for producing and using a variable conductive pattern
US2903686A (en) * 1955-12-27 1959-09-08 Zenith Radio Corp Encoding apparatus
US3152323A (en) * 1959-08-18 1964-10-06 Edward L E Pardee Plural interval timing device having a conductor matrix for selection of the time intervals
US3215999A (en) * 1965-11-02 Memory control device
US3418431A (en) * 1965-05-28 1968-12-24 Bell Telephone Labor Inc Code transmitter
US3492650A (en) * 1965-07-06 1970-01-27 Tore Gottfrid Hesselgren Matrix for producing electric pulses
US3836729A (en) * 1972-07-03 1974-09-17 Kososki H Automatic telephone signalling apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228656B (de) * 1964-12-21 1966-11-17 Befa Bau Elektro Feinmech App Tastgeraet zum selbsttaetigen Erzeugen des Alarm- und Notzeichens fuer Seeschiffe

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215999A (en) * 1965-11-02 Memory control device
US2761894A (en) * 1946-05-17 1956-09-04 Bell Telephone Labor Inc Telegraph switching system with message numbering
US2466099A (en) * 1947-01-08 1949-04-05 Hansen Carlos Apparatus for transmission of radiotelegraphic signals relating to sea or river levels at the site of installation
US2487778A (en) * 1948-01-29 1949-11-15 Atlas David Automatic altimeter setting indicator and transmitter
US2537188A (en) * 1948-06-14 1951-01-09 Kaelin Pierre Automatic telephone station selector set for transmitting station numbers
US2522119A (en) * 1948-06-14 1950-09-12 Kaelin Pierre Recording device for telephone transmitters
US2587635A (en) * 1948-06-29 1952-03-04 Bell Telephone Labor Inc Spaced-pulse impulse sender
US2588397A (en) * 1948-06-29 1952-03-11 Bell Telephone Labor Inc Spaced-pulse impulse sender
US2499606A (en) * 1948-07-16 1950-03-07 Bell Telephone Labor Inc Preset type telephone dialer with pulse generating transformers
US2584997A (en) * 1949-03-02 1952-02-12 Syrl K Ferguson Message timing device
US2575342A (en) * 1949-06-02 1951-11-20 Darrin H Gridley Position sensing device
US2590885A (en) * 1949-12-08 1952-04-01 Bell Telephone Labor Inc Spaced-pulse impulse sender
US2620390A (en) * 1950-07-03 1952-12-02 Charles E Sunderland Automatic emergency keyer unit
US2768238A (en) * 1952-03-17 1956-10-23 Ben W Risinger Automatic signaling device
US2716155A (en) * 1952-06-20 1955-08-23 Nat Res Dev Teleprinting apparatus
US2746680A (en) * 1952-07-01 1956-05-22 Maul Michael Record controlled machine with cross connecting board
US2794073A (en) * 1952-09-10 1957-05-28 Bell Telephone Laoboratories I Cross bar translator switch
US2739298A (en) * 1953-01-07 1956-03-20 Bell Telephone Labor Inc Multifrequency high speed calling signal generator
US2866185A (en) * 1953-02-25 1958-12-23 Stanley S Brody Universal navigation station identification keyer
US2826752A (en) * 1953-11-19 1958-03-11 Eagle Signal Corp Systems permitting response by only selected units of those connected to a single channel
US2903686A (en) * 1955-12-27 1959-09-08 Zenith Radio Corp Encoding apparatus
US2890432A (en) * 1956-09-26 1959-06-09 Robotron Corp Apparatus and method for producing and using a variable conductive pattern
US3152323A (en) * 1959-08-18 1964-10-06 Edward L E Pardee Plural interval timing device having a conductor matrix for selection of the time intervals
US3418431A (en) * 1965-05-28 1968-12-24 Bell Telephone Labor Inc Code transmitter
US3492650A (en) * 1965-07-06 1970-01-27 Tore Gottfrid Hesselgren Matrix for producing electric pulses
US3836729A (en) * 1972-07-03 1974-09-17 Kososki H Automatic telephone signalling apparatus

Also Published As

Publication number Publication date
BE360486A (en)van)
FR35675E (fr) 1930-03-27
BE356937A (en)van)
GB303839A (en) 1929-06-06
FR660951A (fr) 1929-07-19
GB312090A (en) 1930-01-23
DE489657C (de) 1930-01-22

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