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
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 AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 AG 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

Abstract

484,287. Repeaters. SIEMENS & HALSKE AKT.-GES. Jan. 13, 1938, No. 1195. Convention date, Jan. 13, 1937. [Class 40 (iv)] [Also in Group XL] In a repeater station for multi-channel carrier telephony of the kind in which a spare amplifier is automatically connected up on failure of the main one, the outputs of both amplifiers are permanently connected in series, one being short-circuited by a contact s controlled by the condition of the main amplifier. The spare amplifier may be normally only partially operative and the change-over of contact s may be delayed until it is fully operative.
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)
FR (2) FR484287A (en)
GB (1) GB484287A (en)

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 (en) * 1956-03-22 1961-08-31 Philips Nv Circuit arrangement for carrier frequency systems for switching a consumer from an operating facility to a replacement facility
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 (en) * 1938-03-04 1953-11-09 Int Standard Electric Corp Arrangement for the automatic switching of a main amplifier to a replacement amplifier in electrical telecommunication systems

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 (en) * 1956-03-22 1961-08-31 Philips Nv Circuit arrangement for carrier frequency systems for switching a consumer from an operating facility to a replacement facility
US3072858A (en) * 1959-07-22 1963-01-08 Sperry Rand Corp Redundant amplifier failure alarm

Also Published As

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

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