GB647785A - Improvements in or relating to lamp-stands - Google Patents

Improvements in or relating to lamp-stands

Info

Publication number
GB647785A
GB647785A GB2756847A GB2756847A GB647785A GB 647785 A GB647785 A GB 647785A GB 2756847 A GB2756847 A GB 2756847A GB 2756847 A GB2756847 A GB 2756847A GB 647785 A GB647785 A GB 647785A
Authority
GB
United Kingdom
Prior art keywords
arm
moments
lamp
stands
relating
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
GB2756847A
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.)
KENT AND SUSSEX PREC ENGINEERI
Original Assignee
KENT AND SUSSEX PREC ENGINEERI
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 KENT AND SUSSEX PREC ENGINEERI filed Critical KENT AND SUSSEX PREC ENGINEERI
Priority to GB2756847A priority Critical patent/GB647785A/en
Publication of GB647785A publication Critical patent/GB647785A/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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/26—Pivoted arms

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

647,785. Stand brackets. PARR, G. W., and KENT & SUSSEX PRECISION ENGINEERING CO., Ltd. Oct. 14, 1947, No. 27568. [Class 52 (v)] The mass and position of a single non-adjustable counterbalance weight 24 for a lamp stand bracket arm with a pivotally mounted parallelogrammic linkage are predetermined from the equationderived from the moments of the structure when the arm 14 is horizontal, and from derived from the moments when the arm 14 is vertical the respective dimensions and masses being as indicated in the Figure.
GB2756847A 1947-10-14 1947-10-14 Improvements in or relating to lamp-stands Expired GB647785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2756847A GB647785A (en) 1947-10-14 1947-10-14 Improvements in or relating to lamp-stands

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2756847A GB647785A (en) 1947-10-14 1947-10-14 Improvements in or relating to lamp-stands

Publications (1)

Publication Number Publication Date
GB647785A true GB647785A (en) 1950-12-20

Family

ID=10261729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2756847A Expired GB647785A (en) 1947-10-14 1947-10-14 Improvements in or relating to lamp-stands

Country Status (1)

Country Link
GB (1) GB647785A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1029913C2 (en) 2005-09-09 2007-03-12 Stefanus Josephus Henr Breukel Lamp with a folding arm.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1029913C2 (en) 2005-09-09 2007-03-12 Stefanus Josephus Henr Breukel Lamp with a folding arm.
EP1762784A1 (en) * 2005-09-09 2007-03-14 Stefanus Josefus Henricus Breukel Lamp having a pivotable arm

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