GB484287A - Improvements in or relating to electric signalling systems - Google Patents

Improvements in or relating to electric signalling systems

Info

Publication number
GB484287A
GB484287A GB1195/38A GB119538A GB484287A GB 484287 A GB484287 A GB 484287A GB 1195/38 A GB1195/38 A GB 1195/38A GB 119538 A GB119538 A GB 119538A GB 484287 A GB484287 A GB 484287A
Authority
GB
United Kingdom
Prior art keywords
relating
jan
amplifier
contact
signalling systems
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
GB1195/38A
Other languages
English (en)
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens 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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB484287A publication Critical patent/GB484287A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/284—Locking by means of elastic deformation
    • F16B39/286—Locking by means of elastic deformation caused by saw cuts
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H03F1/542—Replacing by standby devices

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB1195/38A 1937-01-13 1938-01-13 Improvements in or relating to electric signalling systems Expired GB484287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE484287X 1937-01-13

Publications (1)

Publication Number Publication Date
GB484287A true GB484287A (en) 1938-05-03

Family

ID=6543096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1195/38A Expired GB484287A (en) 1937-01-13 1938-01-13 Improvements in or relating to electric signalling systems

Country Status (3)

Country Link
BE (1) BE425740A (en:Method)
FR (2) FR484287A (en:Method)
GB (1) GB484287A (en:Method)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515599A (en) * 1947-01-24 1950-07-18 Hartford Nat Bank & Trust Co Arrangement coupling either of two electrical devices to a load upon a disturbance in the other device
US2773944A (en) * 1950-08-08 1956-12-11 Bendix Aviat Corp Amplifying system with stand-by channel
US2775657A (en) * 1951-04-19 1956-12-25 Hartford Nat Bank & Trust Co Dual channel amplifying circuit
DE1113248B (de) * 1956-03-22 1961-08-31 Philips Nv Schaltungsanordnung fuer Traegerfrequenz-anlagen zum Umschalten eines Verbrauchers von einer Betriebseinrichtung auf eine Ersatzeinrichtung
US3072858A (en) * 1959-07-22 1963-01-08 Sperry Rand Corp Redundant amplifier failure alarm

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE896061C (de) * 1938-03-04 1953-11-09 Int Standard Electric Corp Anordnung zum automatischen Umschalten eines Hauptverstaerkers auf einen Ersatzverstaerker bei elektrischen Fernmeldesystemen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515599A (en) * 1947-01-24 1950-07-18 Hartford Nat Bank & Trust Co Arrangement coupling either of two electrical devices to a load upon a disturbance in the other device
US2773944A (en) * 1950-08-08 1956-12-11 Bendix Aviat Corp Amplifying system with stand-by channel
US2775657A (en) * 1951-04-19 1956-12-25 Hartford Nat Bank & Trust Co Dual channel amplifying circuit
DE1113248B (de) * 1956-03-22 1961-08-31 Philips Nv Schaltungsanordnung fuer Traegerfrequenz-anlagen zum Umschalten eines Verbrauchers von einer Betriebseinrichtung auf eine Ersatzeinrichtung
US3072858A (en) * 1959-07-22 1963-01-08 Sperry Rand Corp Redundant amplifier failure alarm

Also Published As

Publication number Publication date
FR484287A (fr) 1917-09-18
BE425740A (en:Method)
FR831986A (fr) 1938-09-16

Similar Documents

Publication Publication Date Title
GB484287A (en) Improvements in or relating to electric signalling systems
GB426547A (en) Improvements in or relating to electric submarine cable signalling systems
GB292136A (en) Improvements in or relating to transmission systems with amplifiers
GB509693A (en) Improvements in electric signal amplifiers incorporating voice-operated devices
GB473944A (en) Improvements in modulating or demodulating apparatus for alternating-current signalling systems
GB501915A (en) Telephone exchange systems
GB1064592A (en) Method to localise faults in carrier frequency systems
GB498310A (en) Improvements in or relating to telephone or like systems
GB523067A (en) Improvements in signal receivers for carrier telephony systems
GB776637A (en) Improvements in or relating to disc-shaped spacing members for coaxial high-frequency transmission lines
GB497534A (en) High frequency signalling systems comprising electrical filters
GB396709A (en) Improvements in or relating to terminating circuits for two-way electrical signalling systems
GB458279A (en) Improvements in or relating to railway or like signalling systems
GB422042A (en) Improvements in or relating to telephone systems
GB185428A (en) Method of signalling over telephone conductors fitted with intensifiers with a signal current of high periodicity
GB752046A (en) Improvements in or relating to connecting means for connecting a reserve amplifier into a repeater transmission system having a plurality of transmission lines
GB495538A (en) Improvements in or relating to electric carrier signalling systems
GB384849A (en) Improvements in or relating to electric telecommunication systems
GB313063A (en) Improvements in or relating to thermionic and like amplifying systems
CA302077A (en) Carrier current supervisory system
GB984462A (en) Improved transmission system
GB306253A (en) Improvements in inter-valve couplings for thermionic valves
CA397618A (en) Modulated amplifier distortion reducing system
GB203274A (en) A system of long distance telephony
CA367291A (en) Telephone, telegraph and signal system