GB428041A - Improved method and apparatus for the automatic synchronisation of rotary movements and their application to the transmission of images - Google Patents

Improved method and apparatus for the automatic synchronisation of rotary movements and their application to the transmission of images

Info

Publication number
GB428041A
GB428041A GB2197633A GB2197633A GB428041A GB 428041 A GB428041 A GB 428041A GB 2197633 A GB2197633 A GB 2197633A GB 2197633 A GB2197633 A GB 2197633A GB 428041 A GB428041 A GB 428041A
Authority
GB
United Kingdom
Prior art keywords
motor
segments
resistance
contact
circuit
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
Application number
GB2197633A
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.)
Mutuelle Mobiliere S A
Original Assignee
Mutuelle Mobiliere S A
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 Mutuelle Mobiliere S A filed Critical Mutuelle Mobiliere S A
Priority to GB2197633A priority Critical patent/GB428041A/en
Publication of GB428041A publication Critical patent/GB428041A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/04Synchronising

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

428,041. Maintaining defined speeds of motors. MUTUELLE MOBILIERE SOC. ANON., 4, Rue Montoyer, Brussels. Aug. 4, 1933, No. 21976. Void [Abridged as open to inspection under Sect. 91 of the Acts, Feb. 9, 1934]. [Class 38 (iii)] [See also Group XL] A synchronizing signal acts on an oscillator 14 in a speed governor to vary the speed of a motor 7 when out of synchronism. The synchronizing signals in the coil 14 oscillate it to open a contact 9 and close a contact 26. At synchronism a resistance 4 in the circuit of the motor remains short-circuited through brushes 16, 17 on segments 18, and a resistance 5 remains in circuit through brushes 27, 28 being off segments 29. The supply to the motor is thus unchanged. If the motor is in advance, brushes 16, 17 are no longer in contact with the segments 18 when the contact 9 is opened, and the resistance 4 is switched in circuit to retard the motor. If, on the contrary, the motor lags, the resistance 5 is short-circuited through the brushes 27, 28 being in contact with the segments 29, and the motor accelerates. According to modifications: the resistances or chokes 4, 5 are in shunt with the field of a shunt-wound motor, Fig. 3 (not shown), or in series with the armature, Fig. 4 (not shown) ; the switches short-circuit part of the field winding or switch a supplementary field winding, Fig. 5 (not shown) ; a resistance in shunt with the field of a series-wound motor is varied, Fig. 6 (not shown) ; part of the secondary of a transformer supplying the armature of a compensated repulsion motor is switched in and out of circuit, Fig. 7 (not shown) ; polarized conducting semicircular rings are used in place of the segments 18, 29, Fig. 8 (not shown).
GB2197633A 1933-08-04 1933-08-04 Improved method and apparatus for the automatic synchronisation of rotary movements and their application to the transmission of images Expired GB428041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2197633A GB428041A (en) 1933-08-04 1933-08-04 Improved method and apparatus for the automatic synchronisation of rotary movements and their application to the transmission of images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2197633A GB428041A (en) 1933-08-04 1933-08-04 Improved method and apparatus for the automatic synchronisation of rotary movements and their application to the transmission of images

Publications (1)

Publication Number Publication Date
GB428041A true GB428041A (en) 1935-04-29

Family

ID=10171894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2197633A Expired GB428041A (en) 1933-08-04 1933-08-04 Improved method and apparatus for the automatic synchronisation of rotary movements and their application to the transmission of images

Country Status (1)

Country Link
GB (1) GB428041A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7552768B2 (en) 2006-07-26 2009-06-30 Baker Hughes Incorporated Swelling packer element with enhanced sealing force

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7552768B2 (en) 2006-07-26 2009-06-30 Baker Hughes Incorporated Swelling packer element with enhanced sealing force

Similar Documents

Publication Publication Date Title
GB420587A (en) Improvements in and relating to the prevention of sparking in the control of electric circuits
GB428041A (en) Improved method and apparatus for the automatic synchronisation of rotary movements and their application to the transmission of images
US3045158A (en) Synchronizing arrangement
US1512361A (en) Method for synchronizing apparatus on a long distance
GB252246A (en) Improvements in and relating to dynamo electric machines
SU37182A1 (en) Asynchronous Motor Synchronization Device
US1712778A (en) Method of and means for starting synchronous motors
GB207843A (en) Improvements in automatic or remote controlled rotary converter substations
GB425790A (en) Improvements in commutator rectifying arrangements for electric currents
GB272006A (en) Improvements relating to the starting of synchronous dynamoelectric machines
GB260929A (en) Improvements in or relating to alternating current motors
GB449164A (en) Improvements relating to induction motor control
GB740136A (en) Improvements in or relating to electric motors
GB766891A (en) Improvements relating to selsyn systems
GB101809A (en) Improvements in or relating to the Starting of Synchronous Dynamo-electric Machinery and to Means therefor.
GB428876A (en) Improvements in and relating to single phase alternating current electric motors
GB383966A (en) Improvements in or relating to the distant control of electric circuits
GB424136A (en) Improvements in and relating to systems of electric motor control
GB477683A (en) Improvements in and relating to electric motors
GB418637A (en) Regulating device for dynamo electric machines
GB424547A (en) Improvements in and relating to electric motors
GB543788A (en) Improvements in the control of synchronous electric motors
GB586053A (en) Improved electrical means for facilitating the synchronisation of the speeds of engines or machines
GB245404A (en) Improvements in control systems for electric synchronous motors
GB476174A (en) Improvements in and relating to systems of electric motor control