GB609895A - Improvements relating to adjustable electric standard lamps - Google Patents

Improvements relating to adjustable electric standard lamps

Info

Publication number
GB609895A
GB609895A GB906346A GB906346A GB609895A GB 609895 A GB609895 A GB 609895A GB 906346 A GB906346 A GB 906346A GB 906346 A GB906346 A GB 906346A GB 609895 A GB609895 A GB 609895A
Authority
GB
United Kingdom
Prior art keywords
arm
pivot
standard
adjustable
pressing
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
GB906346A
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.)
CORNERCROFT Ltd
Original Assignee
CORNERCROFT 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 CORNERCROFT Ltd filed Critical CORNERCROFT Ltd
Priority to GB906346A priority Critical patent/GB609895A/en
Publication of GB609895A publication Critical patent/GB609895A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14Adjustable mountings
    • F21V21/26Pivoted arms

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

609,895. Supporting electric lamps. CORNERCROFT, Ltd., and RYCROFT, N. March 25, 1946, No. 9063. [Class 75(iii)] [Also in Group XIV] In an adjustable standard lamp having an adjustable arm 8 and spring counterbalancing means, the upper spring anchorage point is carried by means which is movably mounted relatively to the arm 8 to obtain accurate counterbalancing. The spring 11, Fig. 1, may be attached to a wire hook pivoted at 10b to a box structure 10 sliding in the arm 8 and having a tapped hole to receive a screw 12 sliding in a slot in the top of the arm 8 so that the relative positions of the pivot 10b and 'the pivot 9 of the arm 8 may be adjusted. Alternatively two springs may act on hooks 15, Fig. 4, depending from a plate 16 pivoted at 16a to a box structure 17 sliding in the arm 8 which also contains a sheet metal pressing 18. The pressing 18 may have an ear piece 18a to receive a micrometer screw 19 which engages in an ear piece 17a of the structure 17, adjustment of the screw 19 serving to move the structure 17 relatively to the pressing 18 so that the relative positions of the pivot 16a and the pivot 9 of the arm 8 may be adjusted. Ear pieces 14a, 14b, Fig. 1, on a sheet metal pressing 14 or the ear pieces 17a, 18a, Fig. 4, serve to limit the angular movement of the arm 8 in a slot 7b of the standard 7, and the arm 8 may be mounted in bearings formed between the inwardly pressed part of a structure which is a force fit in the standard 7. The means for adjusting the counterbalancing springs may be applied to a lamp having a non-adjustable standard as described in Specification 609,894 or to one having an adjustable standard as described in Specification 537,194, [Group XIV].
GB906346A 1946-03-25 1946-03-25 Improvements relating to adjustable electric standard lamps Expired GB609895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB906346A GB609895A (en) 1946-03-25 1946-03-25 Improvements relating to adjustable electric standard lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB906346A GB609895A (en) 1946-03-25 1946-03-25 Improvements relating to adjustable electric standard lamps

Publications (1)

Publication Number Publication Date
GB609895A true GB609895A (en) 1948-10-07

Family

ID=9864685

Family Applications (1)

Application Number Title Priority Date Filing Date
GB906346A Expired GB609895A (en) 1946-03-25 1946-03-25 Improvements relating to adjustable electric standard lamps

Country Status (1)

Country Link
GB (1) GB609895A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3163159A4 (en) * 2014-06-26 2017-06-28 Yuriy Borisovich Sokolov Device for securing a light fitting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3163159A4 (en) * 2014-06-26 2017-06-28 Yuriy Borisovich Sokolov Device for securing a light fitting

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