GB304211A - Improvements in or relating to electrical control devices responsive to light - Google Patents

Improvements in or relating to electrical control devices responsive to light

Info

Publication number
GB304211A
GB304211A GB1515/29A GB151529A GB304211A GB 304211 A GB304211 A GB 304211A GB 1515/29 A GB1515/29 A GB 1515/29A GB 151529 A GB151529 A GB 151529A GB 304211 A GB304211 A GB 304211A
Authority
GB
United Kingdom
Prior art keywords
relay
light
relating
control devices
electrical control
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
GB1515/29A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Publication of GB304211A publication Critical patent/GB304211A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/24—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil having light-sensitive input

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

304,211. Associated Electrical Industries, Ltd., (formerly Metropolitan- Vickers Electrical Co., Ltd.), (Assignees of Crichton, L. N.). Jan. 16, 1928, [Convention date]. Controlling consuming devices. - A lightsensitive control device for controlling street lamps &c. comprises a light-sensitive cell 9, and an induction relay 5, depending on the product of the currents in two windings for its operating power, one winding, 8, being supplied direct from the mains, the other, 7, being in series with the cell 9 and the electric mains. In the arrangement shown in Fig. 1, the lamp 4 is controlled by a mercury switch 15 connected by bevel gearing to the relay spindle 12. In an alternative arrangement (Fig. 2, not shown) the restoring torque on the relay shaft is effected by an additional winding on the relay, and a moving contact brings into operation a further relay.
GB1515/29A 1928-01-16 1929-01-16 Improvements in or relating to electrical control devices responsive to light Expired GB304211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US304211XA 1928-01-16 1928-01-16

Publications (1)

Publication Number Publication Date
GB304211A true GB304211A (en) 1929-10-10

Family

ID=21854124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1515/29A Expired GB304211A (en) 1928-01-16 1929-01-16 Improvements in or relating to electrical control devices responsive to light

Country Status (1)

Country Link
GB (1) GB304211A (en)

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