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Expired
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GB1832722A
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Individual
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Individual
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Priority to GB1832722ApriorityCriticalpatent/GB185074A/en
Publication of GB185074ApublicationCriticalpatent/GB185074A/en
H01H51/2236—Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature
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Physics & Mathematics
(AREA)
Electromagnetism
(AREA)
Electric Propulsion And Braking For Vehicles
(AREA)
Abstract
185,074. Day, S. M. May 12, 1921. Drawings to Specification. Relays.-A direct-current relay of the kind used in railway signalling is provided with a pair of enlarged pole-pieces between which extends a non-magnetic stop-bar co-operating with an adjustable stop-pin on the armature to regulate the minimum air-gap. The relay described is identical with that shown in Figs. 1, 2, 3, 4, and 7 of Specification 184,847.
GB1832722A1921-05-121921-05-12Improvements in relays
ExpiredGB185074A
(en)
Device for adjusting the operating current of alternating current magnets, especially for interrupting magnets with excessive current, for relays, etc.
Circuit arrangement for alternating current telegraphy, in which the separating and character current steps are transmitted as alternating current trains of the same frequency but different phase positions.