GB185026A - Improvements in or relating to the control of electric lamps for cabinets, desks and the like - Google Patents

Improvements in or relating to the control of electric lamps for cabinets, desks and the like

Info

Publication number
GB185026A
GB185026A GB2347121A GB2347121A GB185026A GB 185026 A GB185026 A GB 185026A GB 2347121 A GB2347121 A GB 2347121A GB 2347121 A GB2347121 A GB 2347121A GB 185026 A GB185026 A GB 185026A
Authority
GB
United Kingdom
Prior art keywords
lid
slot
gramophone
lamp
projection
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
GB2347121A
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.)
KENNETH OWEN DAVIS
Original Assignee
KENNETH OWEN DAVIS
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 KENNETH OWEN DAVIS filed Critical KENNETH OWEN DAVIS
Priority to GB2347121A priority Critical patent/GB185026A/en
Publication of GB185026A publication Critical patent/GB185026A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

185,026. Barnett, C. J., and Davis, K. O. Sept. 3, 1921. Retractive switches.-For switches for electric lamps which are automatically turned off or on when the lid of a gramophone- or other cabinet is opened or closed, means are provided for switching off the lamp when the lid is open. The movable contact is mounted on a rod 1 which moves up and down with the lid against the action of a spring 17, and a projection 15 on the rod ordinarily moves in a slot 11 in a guide-tube 9; when the lid is open, however, contact may be broken by rotating the rod 1, and when the lid is now lowered, the projection 15 moves down a parallel slot 10 which is connected to the slot 11 by a cross-slot as shown. As shown in Fig. 1, the movable contact takes the form of a bridging member 2, and, as shown in Fig. 2, the projection 15 constitutes it. Fig. 2 shows the invention applied to a gramophone, the lamp 21 being situated in a vertical tube beneath a mirror 23 which is adjustably mounted on an axis 24 so as to throw the light on to the record. The invention is particularly applicable to the electrically-driven gramophone described in Specification 158,967, and, as described in such Specification, the lamp may also constitute a resistance in series with the motor when the latter is running.
GB2347121A 1921-09-03 1921-09-03 Improvements in or relating to the control of electric lamps for cabinets, desks and the like Expired GB185026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2347121A GB185026A (en) 1921-09-03 1921-09-03 Improvements in or relating to the control of electric lamps for cabinets, desks and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2347121A GB185026A (en) 1921-09-03 1921-09-03 Improvements in or relating to the control of electric lamps for cabinets, desks and the like

Publications (1)

Publication Number Publication Date
GB185026A true GB185026A (en) 1922-08-31

Family

ID=10196146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2347121A Expired GB185026A (en) 1921-09-03 1921-09-03 Improvements in or relating to the control of electric lamps for cabinets, desks and the like

Country Status (1)

Country Link
GB (1) GB185026A (en)

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