US2903106A - Printing telegraph transmitter control - Google Patents

Printing telegraph transmitter control Download PDF

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Publication number
US2903106A
US2903106A US560837A US56083756A US2903106A US 2903106 A US2903106 A US 2903106A US 560837 A US560837 A US 560837A US 56083756 A US56083756 A US 56083756A US 2903106 A US2903106 A US 2903106A
Authority
US
United States
Prior art keywords
contacts
motor
transmitter
relay
clutch
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
US560837A
Other languages
English (en)
Inventor
Mason Frederick Percival
Stemp Ronald Gilbert
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.)
Creed and Co Ltd
Original Assignee
Creed and Co Ltd
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
Priority claimed from GB2350/55A external-priority patent/GB764244A/en
Application filed by Creed and Co Ltd filed Critical Creed and Co Ltd
Application granted granted Critical
Publication of US2903106A publication Critical patent/US2903106A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19377—Slidable keys or clutches
    • Y10T74/19414—Single clutch shaft
    • Y10T74/19419—Progressive
    • Y10T74/19423—Multiple key
    • Y10T74/19428—Spur
    • Y10T74/19437—Electrically operated

Definitions

  • the transmitter contacts are maintained short circuited until a stop arm is releasedby the motor reaching its correct speed.
  • This stop arm restores the short circuit across the transmitter contacts once per cycle during the stop period and when the stop button to disconnectt-he motor isv operated :the stop arm is held in the position in which it maintains .the short circuit across the transmitter contacts, thus preventing trans,
  • the present invention relates to telegraph transmitters driven by motors whose speed is controlled by centrifugally operated contacts.
  • means for controlling the starting of a telegraph transmitter driven by a motor of which the speed is governed by centrifugally operated contacts comprising a clutch through which the power developed by the motor is transmitted to the transmitter the engagement of said clutch being under the control of said contacts.
  • Fig. l is a block diagram of the equipment used in applying the invention
  • Fig. 2 is a diagram of a preferred embodiment of the control circuit of the invention.
  • This drawing shows the circuits for controlling the supply of power to the clutch electromagnet.
  • Two manually operated switches may be provided, one of which is a manual motor switch MMS, and the other a manual line switch MLS.
  • the manual motor switch MMS has two separate contacts 1 and In, both normally in open condition. When the switch is operated contacts 1 connect the power supply P to the motor M. When the motor reaches the desired speed the centrifugally operated motor governing contacts 2 open and the inductive motor energy is dissipated by the how of oscillatory current via capacitor C. The oscillatory potential developed across capacitor C is applied via contacts 1a of the switch MMS to a full wave rectifying bridge 4, 5, '6 and 7 and the Winding 8 of a relay R.
  • the relay R closes four contacts r1, r2, r3 and r4; r1 forms a bridge across contacts -1 of the switch MMS.
  • Contact r3 connects a governing resistor 3 across the contacts 2 and diverts part of the current flowing through the rectifier bridge and winding 8 of the relay R.
  • the resistor 3 is of sufliciently great a resistance to ensure that this winding of the relay draws sufiicient current to remain operated.
  • the purpose of resistor 3 is to assist in dissipating inductive energy from :the motor during subsequent operations :of contacts '2.
  • a second pair of contacts such as contacts 12a, may be provided on the switch MLS which serves to short circuit, when the'contacts r4 are closed, the wires a and b which are connected to the transmitting contact circuit of "an associated auxiliary transmitter transmitting over .the same channel as the main transmitter andthus prevent any interference with the main transmitter by the auxiliary transmitter.
  • both transmitters are assumed to be of the single-current type, which, when sharing the same channel, are connected in series.
  • Single-current transmitters are always so arranged that when the transmitter is inert its signalling contacts are closed.
  • the contacts of one are generating signals the contacts of the other carry these signals to the communication line and must not be inadvertently operated.
  • x are the contacts of the automatic transmitter and y are the contacts of an associated keyboard transmitter; x and y are connected in series with a source z for signalling to the line comprising conductors 1 and 1 It Will be seen that contacts 1'2a and r4, when closed, shortcircuit by the agency of conductors a and b the contacts y of the auxiliary keyboard transmitter thus precluding disturbance to the signals generated by contacts x by inadvertent opening of contacts y.
  • contacts 13 which openwhen the tape through the transmitter becomes taut, may be provided in the circuit of the clutch release magnet to stop the transmitter and prevent the tape from being torn.
  • Means for controlling the starting of a motor driven device until its drive motor attains a predetermined rate of rotation comprising a source of motor potential, clutch means for clutching said device to said drive motor, a pair of centrifugally operated contacts under control of said motor, said contacts serially disposed between said source and said motor, means for deriving a control potential from the inductive energy of said motor upon the operation of said contacts and an electromagnetic relay responsive to said control potential for controlling the operation of said clutch means.
  • Means for controlling the starting of a motor driven device as claimed in claim 1 wherein said means for deriving a control potential comprises a capacitor in shunt with said contacts, and rectifier means coupled between said relay and said capacitor for rectifying oscillatory current flowing in said capacitor incident to the operation of said contacts.
  • Means for controlling the starting of a motor driven device until its drive motor attains a predetermined speed comprising a source of current, a clutch magnet for clutching said device to said drive motor, a pair of centrifugally operated contacts under control of said motor, said contacts being connected in the circuit of said drive motor and source of current, a capacitor connected in shunt with said contacts, an electromagnetic relay, rectifier means coupled between said capacitor and a winding of said relay, and an energizing circuit for said clutch magnet including contacts of said relay.
  • Means for controlling the starting of a motor driven device as claimed in claim 9, comprising a further rectifier connected between one end of said holding winding and one side of said clutch magnet.
  • Means for controlling the starting of a motor driven device until its motor attains a predetermined speed comprising a source of current, a clutch magnet for clutching said device to said motor, a pair of centrifugally operated contacts under control of said motor, first and second manually operable switch contacts, an energizing circuit for said motor including said centrifugally operated contacts and said first manually operable switch contacts, a clutch magnet for clutching said device to said motor, a capacitor connected in shunt with said centrifugally operated contacts, an electromagnetic relay having an operating winding and a holding winding, rectifier means coupled between said capacitor and said operating winding, means connecting said holding winding in parallel with said clutch magnet, an energizing circuit for said clutch magnet including a first pair of contacts controlled by said relay and said second manually operable switch contacts, and a second pair of contacts controlled by said relay and connected in shunt with said first manually operable switch contacts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Electric Motors In General (AREA)
  • Stopping Of Electric Motors (AREA)
  • Toys (AREA)
US560837A 1955-01-26 1956-01-23 Printing telegraph transmitter control Expired - Lifetime US2903106A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB2903106X 1955-01-26
GB2350/55A GB764244A (en) 1955-01-26 1955-01-26 Improvements in or relating to printing telegraph transmitters
GB1029407X 1955-01-26
GB1140575X 1955-01-26

Publications (1)

Publication Number Publication Date
US2903106A true US2903106A (en) 1959-09-08

Family

ID=33033221

Family Applications (1)

Application Number Title Priority Date Filing Date
US560837A Expired - Lifetime US2903106A (en) 1955-01-26 1956-01-23 Printing telegraph transmitter control

Country Status (3)

Country Link
US (1) US2903106A (enrdf_load_stackoverflow)
BE (1) BE544653A (enrdf_load_stackoverflow)
DE (1) DE1029407B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061463A (en) * 1959-03-26 1962-10-30 Chromalloy Corp Metallic diffusion
US3396826A (en) * 1965-10-08 1968-08-13 Rockwell Mfg Co Electric motor control and clutch
US3459890A (en) * 1965-05-20 1969-08-05 Int Standard Electric Corp Storage device for use in teleprinters

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1264378A (en) * 1914-03-16 1918-04-30 Western Electric Co Controlling system.
US1632297A (en) * 1921-10-03 1927-06-14 Morkrum Kleinschmidt Corp Printing telegraphy
US1948037A (en) * 1927-10-26 1934-02-20 Sunlight Electrical Company Electric motor
US1985640A (en) * 1934-02-27 1934-12-25 Jennings B Kitchens Telegraph transmitter
US2054479A (en) * 1935-04-15 1936-09-15 Robbins & Myers Clutch and switch for electric motors
US2608615A (en) * 1942-12-18 1952-08-26 Roelof M M Oberman Automatic telegraph system controlled from the teleprinter keyboard

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE669445C (de) * 1936-12-07 1938-12-27 Siemens & Halske Akt Ges Schalteinrichtung fuer Lochstreifengeraete
DE877914C (de) * 1943-05-04 1953-05-28 Siemens Ag Fernschreibgeraet mit vereinigtem Tasten- und Lochstreifensender

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1264378A (en) * 1914-03-16 1918-04-30 Western Electric Co Controlling system.
US1632297A (en) * 1921-10-03 1927-06-14 Morkrum Kleinschmidt Corp Printing telegraphy
US1948037A (en) * 1927-10-26 1934-02-20 Sunlight Electrical Company Electric motor
US1985640A (en) * 1934-02-27 1934-12-25 Jennings B Kitchens Telegraph transmitter
US2054479A (en) * 1935-04-15 1936-09-15 Robbins & Myers Clutch and switch for electric motors
US2608615A (en) * 1942-12-18 1952-08-26 Roelof M M Oberman Automatic telegraph system controlled from the teleprinter keyboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061463A (en) * 1959-03-26 1962-10-30 Chromalloy Corp Metallic diffusion
US3459890A (en) * 1965-05-20 1969-08-05 Int Standard Electric Corp Storage device for use in teleprinters
US3396826A (en) * 1965-10-08 1968-08-13 Rockwell Mfg Co Electric motor control and clutch

Also Published As

Publication number Publication date
DE1029407B (de) 1958-05-08
BE544653A (enrdf_load_stackoverflow)

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