US2214910A - Start-stop repeater system - Google Patents

Start-stop repeater system Download PDF

Info

Publication number
US2214910A
US2214910A US180066A US18006637A US2214910A US 2214910 A US2214910 A US 2214910A US 180066 A US180066 A US 180066A US 18006637 A US18006637 A US 18006637A US 2214910 A US2214910 A US 2214910A
Authority
US
United States
Prior art keywords
shutter
armature
signal
photo
controlled
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
US180066A
Other languages
English (en)
Inventor
Louis M Potts
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.)
AT&T Teletype Corp
Original Assignee
Teletype Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Teletype Corp filed Critical Teletype Corp
Priority to US180066A priority Critical patent/US2214910A/en
Priority to GB29842/38A priority patent/GB506322A/en
Priority to CH233987D priority patent/CH233987A/fr
Priority to FR847620D priority patent/FR847620A/fr
Application granted granted Critical
Publication of US2214910A publication Critical patent/US2214910A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/202—Repeater circuits; Relay circuits using mechanical devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/26—Circuits with optical sensing means, i.e. using opto-couplers for isolation

Definitions

  • This invention pertains to regenerative teleis placed under mechanical control of a device graph signal repeaters and more particularly to responsive to received line signals, while the retelegraph repeating devices of start-stop repeater is in its stop or idle condition, and in generative type in which reproduction of signals which each of the signal impulses is repeated by is eflected by a photo-electronic system.
  • the shutter element further does not Withincrease of speed in signaling, the inpropagate in any repeated electrical impulse any dividual electrical impulses become shorter, and electrical distortion resulting from any mechanithe invariable components of distortion introcal vibration or chatter resulting upon starting --duced by the electrical constants of the connecor stopping the mechanical shutter.
  • an object of this invention is to to control of a starting signal 'in a controlling provide a regenerative repeater in which original line circuit.
  • the cams In response to a starting signal imelectrical conditions of controlling signals are pulse, the cams are started and continue in 5 faithfully repeated in a controlled circuit in motion for a complete cycle of revolution, which original time values as well as in renewed is also a complete code cycle of operation, and strength, and in which the beginning andending then the cams come to rest in readiness for the of the respective signals are effected with a next code cycle. minimum of transit time.
  • Controlled by the cams is a shutter member for
  • a still further object ofthe invention is the controlling the admission of light into a photo- 50 provision of a photo-electric regenerative repeatelectronic retransmitting member, the shutter ing device of simple construction and operamember being such that it is controlled bythe tion.
  • a feature of the invention is to provide a reand ending of every retransmitted signal imgenerative p e in w ch starting mechanism pulse, but is permitted by the cams to take a 55 transmitting position for each signal impulse in accordance only with the electrical nature of the instantly received signal impulse so that the beginning of each retransmitted impulse has its electrical nature controlled by the instant received impulse but has its beginning and duration controlled by the cams.
  • a maximum abruptness in admitting and excluding light to and from the photo-e1ectric means is attained by mechanical construction of the shutter.
  • the start impulse and the stop impulse, which respectively precede and follow the impulses of the intelligence code signal, also are repeated in regenerative manner.
  • Fig. 2 shows a sectional view of the mechanical elements taken on line 2-2 of Fig. 1;
  • Fig. 3 shows a section taken at 3--3 of Fig. 1 through the photo-electronic cabinet including a showing of an optical system and of a retransmitting circuit;
  • Fig. 4 shows an enlarged section of the shutter.
  • Fig. 5 illustrates a simplified illuminating system.
  • line wire I connects transmitting substation 2 and repeating signal receiving magnet 3 in a controlling circuit with grounded battery 4. Repeating mean is positioned between magnet 3 and amplifier I0, whence line wire 5 completes the circuit to receiving substation 6.
  • Magnet 3 has an armature II pivoted to a supporting frame by pivot I2 with retractile spring I3 and an arm I4 which constitutes a follower for a six-toothed cam I5 fixed to cam sleeve I 8, which is sleeved upon a continuously rotating power shaft l'l.
  • power shaft I'l carries a fixed collar 32 and a spring pressed feather washer 33 between which are friction discs 34 and 35 which hold frictionally a cam sleeve assembly comprising the sleeve I6, start arm 31, the sixtoothed cam I5, the seven-toothed cam 30, and a clamping nut 48.
  • Start arm 31 engages gate 4
  • is restrained by latch 48 pivoted at 41 upon the member 43 and tensioned by compression spring 48 extending from latch 48 to member 43.
  • Extending between latch 46 and armature II of magnet 3 is a linkage comprising a start member 50 pivoted to the frame at 5
  • the eflfect of shutter I9 upon photocell 8 is in-- creased by providing a plurality of slots l8, pro-' ducing a plurality of beams.
  • the quantity of light supplied to photocell 8 is represented by a product of the width of slots l8 multiplied by the effective length of the slots. When a desired quantity of light has been determined, this quantity may be admitted to cabinet 24 by dimensioning properly the length and width of slots l8.
  • Providing a plurality of slots resulting in a plurality of beams increases the effective length of the slots and reduces the required width thus the reducing movement required of the shutter I9. Since a minimum movement of shutter I9 facilitates its operation, the provision of nultiple slots is desirable.
  • FIG. 3 An optical system is disclosed in Fig. 3 comprising an illuminant 55, a pair of condensers 56 and 51, and a collimator 58, which produces a beam 59 ample to cover all of the slots I8 and 28 when the slots are in alignment and which serves thus to control the photo-cell 8 at such times.
  • the potentiometer input circuit comprises a portion of potentiometer resistance 60 as a source of current, contactor 6
  • the resistance value of resistor 63 is so chosen that a maximum change in potential of conductor 65 results in response to a change in illumination of photo-cell 8.
  • , 64, and H are such that current flows in the plate circuit of valve 9 when photo-cell 8 is dark, but
  • the grid of valve 9 is at all times negative with reference to cathode 61, being but lightly negative, due to proximity of contactors 64 and II, when photocell 8 is dark, and increasing in negative value when photocell 8 decreases in resistance by virtue of illumination.
  • the local potentiometer circuit mentioned for grid control of valve 1 comprises a portion of potentiometer resistance 60 as a source of current, contactor H, cathode 61 and anode of Valve 9, conductor 12, resistor 13, and contactor 14.
  • potentiometer resistance 60 as a source of current, contactor H, cathode 61 and anode of Valve 9, conductor 12, resistor 13, and contactor 14.
  • a signal of marking nature in a system including the invention exemplified in the drawing includes a marking signal current in the transmitting substation 2 and line conductor I, an energized condition of magnet 3, the shutter l9 in the position shown, slots I8 and 28 in alignment as shown in Fig. 3, an illuminated condition of photo-cell 8, estoppel of current in plate circuit of valve 9, and a plate currentin valve 1 constituting a marking signal current in line 5 and substation 6.
  • lever 25 again projects into the path of teeth'of cam 30, arm l4 projects into the path of cam l5, and the next action is the engagement of a tooth of cam 15 with its follower arm I l whereby armature II is moved toward or against its controlling magnet 3.
  • This action occurs six times in a cycle, each such occurrence at about the middle of six of the code impulses; namely, first, second, third, fourth, and fifth impulses and the stop impulse of the code.
  • armature II will be heldby magnetism of energized magnet 3 if the instant signal be a closed circuit at station 2, but in each instance armature II will be released by the passing of tooth of cam l5 from follower arm 14 and armature II will be Withdrawn from deenergized magnet 3 by spring i3 if the instant signal at transmitting station 2 be such that the transmitting station 2 is open circuit to deenergize magnet 3.
  • a regenerative repeating mechanism having a small number of mechanical parts andno electricalcontacts, whose parts are controlled by electro-mechanical means and the motion of whose parts control the illumination or darkening of the photo-electric cell 8 in code manner in response to received signals.
  • a regenerative repeater signal receiving means, a photo-shutter having a closed and open position, means to determine the succession of open and closed positions of the shutter according to the operation of the signal receiving means, a rotary start-stop timing member started into rotation by said signal receiving means responsively to an initial signal of a group of signals, and means responsive to said timing member to determine the actual time of the change from open position of said shutter to close position of said shutter or vice versa, controlled by said timing means.
  • a signal receiving system means to transmit code signals, timing means started by said signals at the beginning of each code signal and operating independently for the remainder of the signal, a photo-shutter having an open and closed position, means controlled by the signal to determine the position of the shutter for each element of the signal, means to determine the time of change from open to closed and vice versa controlled by the timing means, means to produce a beam of radiant energy, means to modulate the beam by said shutter, a photo-electric cell activated by said beam, and means to transmit electric telegraph signals according to the activation of the photo-electric cell.
  • signal receiving means means to produce and extinguish a beam of light under the control of the receiving means, means normally at rest and started into rotation by said signal receiving means in response to a starting signal to time the intervals between producing and extinguishing the beam, a photoelectric device activated by said beam, and means to transmit electrical signals controlled according to the operation of the photo-electric device.
  • an armature controlled by received electrical signals a photo-electronic member having a shutter elastically articulated to said armature, and camcontrolled mechanism initially responsive to said armature and operating to' render said shutter operable by said armature ata predetermined instant.
  • an armature controlled by received electrical signals a photo-electronic member having a shutter, elastic means connecting said shutter and said armature, and cam-controlled mechanism initially responsive to said armature and operating to render said shutter operable by said armature through said elastic means.
  • a signal receiving magnet an armature for said magnet, a photo-electronic retransmitting member having a shutter, a tension member connecting said armature and said shutter to operate said shutter in response to movement of said armature, and a locking member engaging said shutter to restrain said shutter whereby an instantly received signal is stored in said tension member.
  • armature controlled by successive received signals
  • photo-electronic member having a control member elastically articulated to said armature
  • cam-controlled mechanism rendering said control member responsive to said armature at successive instants of beginning of a plurality of electrical retransmission time intervals.
  • an armature controlled by successive received signals
  • a photo-electronic retransmitting member having a movable shutter
  • means selectively controlled by said armature and acting to urge said shutter to move a locking member engaging and restraining said shutter, and means operating said locking member to release said shutter repeatedly.
  • an armature responsive to successive received signal impulses, a photo-electronic retransmitting member having a controlling shutter elastically connected to said armature to follow movements of said armature, and cam controlled mechanism engaging said shutter and restraining said shutter after said armature has been shifted and until a mechanically predetermined instant.
  • a receiving member responsive to received electrical signals, a photo-electronic retransmitting member controlled by said receiving member, a rotary member responsive to said receiving member to begin rotation, and means associating said rotary member and said retransmitting member to control said retransmitting member repeatedly during each rotation to begin retransmission of successive received signals.
  • a photoelectronic retransmitter In a telegraphic repeating device, a photoelectronic retransmitter, a timing member therefor, a restraining member engaging and restraining said timing member, an armature controlled by received signals, and means operated by said armature and acting to control said timing member and said photo-electronic retransmitter.
  • a photocell In a telegraph transmitting device, a photocell, a shutter controlling the illumination thereoi, and means to operate said shutter through a preliminary zone of motion prior to varying the illumination of said cell, through an intermediate zone of motion while varying the illumination of said cell, and through a final zone of motion after varying the illumination of said cell.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
US180066A 1937-12-16 1937-12-16 Start-stop repeater system Expired - Lifetime US2214910A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US180066A US2214910A (en) 1937-12-16 1937-12-16 Start-stop repeater system
GB29842/38A GB506322A (en) 1937-12-16 1938-10-14 Start-stop repeater system
CH233987D CH233987A (fr) 1937-12-16 1938-12-09 Répétiteur régénérateur d'installation télégraphique arythmique.
FR847620D FR847620A (fr) 1937-12-16 1938-12-15 Systèmes télégraphiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US180066A US2214910A (en) 1937-12-16 1937-12-16 Start-stop repeater system

Publications (1)

Publication Number Publication Date
US2214910A true US2214910A (en) 1940-09-17

Family

ID=22659083

Family Applications (1)

Application Number Title Priority Date Filing Date
US180066A Expired - Lifetime US2214910A (en) 1937-12-16 1937-12-16 Start-stop repeater system

Country Status (4)

Country Link
US (1) US2214910A (fr)
CH (1) CH233987A (fr)
FR (1) FR847620A (fr)
GB (1) GB506322A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218614A (en) * 1978-06-08 1980-08-19 Westinghouse Electric Corp. Device for measuring vibration amplitude
US4321464A (en) * 1978-06-08 1982-03-23 Westinghouse Electric Corp. Device for measuring vibration phase and amplitude

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218614A (en) * 1978-06-08 1980-08-19 Westinghouse Electric Corp. Device for measuring vibration amplitude
US4321464A (en) * 1978-06-08 1982-03-23 Westinghouse Electric Corp. Device for measuring vibration phase and amplitude

Also Published As

Publication number Publication date
FR847620A (fr) 1939-10-12
CH233987A (fr) 1944-08-31
GB506322A (en) 1939-05-25

Similar Documents

Publication Publication Date Title
US2214910A (en) Start-stop repeater system
US2235038A (en) Electromagnetic relay
US2400088A (en) Remote-control apparatus
US2698888A (en) Control system and receiver therefor
US2104251A (en) Start-stop regenerative repeater
US1917308A (en) Pin barrel selector armature retaining type
GB309129A (en) Mechanical translator for printing telegraph systems
US1924795A (en) Selective receiver
US1782907A (en) Remote control system
US1894980A (en) Tape controlled telegraph transmitter
US2086638A (en) Regenerative telegraph repeater
US1932925A (en) Automatic radioelectric standby device
US2354733A (en) Transmitter
US2323155A (en) Printing telegraph receiver
US1938597A (en) Motor control
US2437497A (en) Automatic telegraph key
US2355437A (en) Register translator or like device
US2073449A (en) Corrective time-controlled system
US3378816A (en) Telemeter system
US1895110A (en) Step-by-step transmitter
US1865371A (en) Advertising device, publicity telegraph, and the like
US1718784A (en) Telegraphic sending apparatus
US1310788A (en) Synchronizing clock system.
US3121139A (en) Synchronizing device for start-stop printing telegraph receivers
US1215918A (en) Selecting apparatus and system.