GB689625A - Improvements in or relating to adjustable supports for electric lamps and the like - Google Patents
Improvements in or relating to adjustable supports for electric lamps and the likeInfo
- Publication number
- GB689625A GB689625A GB30467/49A GB3046749A GB689625A GB 689625 A GB689625 A GB 689625A GB 30467/49 A GB30467/49 A GB 30467/49A GB 3046749 A GB3046749 A GB 3046749A GB 689625 A GB689625 A GB 689625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- link
- pin
- levers
- lever
- 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
Links
- 238000004873 anchoring Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000007799 cork Substances 0.000 abstract 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
- F16M11/2035—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction
- F16M11/2064—Undercarriages with or without wheels comprising means allowing pivoting adjustment in more than one direction for tilting and panning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/04—Balancing means
- F16M2200/044—Balancing means for balancing rotational movement of the undercarriage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
689.625. Lamp brackets. BAGLOW, D. V. Feb. 28, 1951 [Nov. 28. 1949; Nov. 28, 1949]. Nos. 30467/49 and 30468/49. Classes 52(iii) and 52(v) An adjustable support for lamps comprises levers 19, 20 pivotally connected by a pin 28, the lower lever 19 being pivotally mounted on a pin 17 suspended between lugs 16 on the rotatably mounted casing of a standard within which is 'a compression spring 29 so coupled to the levers that it exerts a tension on each of the levers. A link 30 is pivotally mounted at the end of the lever 20 on a pin 32 and is connected to the lower end of the lever 19 by a link 33 of a length equal to the distance between the pins 32 and 28 and pivotally mounted on the pin 17. The counterbalancing spring 29 is suspended by a pair of co-operating stirrups 36, 37 the ends of which are turned over to engage the ends of the spring. The stirrup 36 is connected by a bolt to the base of the standard thus anchoring the upper end of the spring. The free end of the spring is connected through the stirrup 37 to the link 30 so any movement of the link 30 caused by movement of eithed lever is transmitted to the spring. A piece of cork 41 held between the stirrup gives additional resistance to pivotal movement of the levers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30467/49A GB689625A (en) | 1949-11-28 | 1949-11-28 | Improvements in or relating to adjustable supports for electric lamps and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30467/49A GB689625A (en) | 1949-11-28 | 1949-11-28 | Improvements in or relating to adjustable supports for electric lamps and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB689625A true GB689625A (en) | 1953-04-01 |
Family
ID=10308137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30467/49A Expired GB689625A (en) | 1949-11-28 | 1949-11-28 | Improvements in or relating to adjustable supports for electric lamps and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB689625A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1273066B (en) * | 1963-12-07 | 1968-07-18 | Industrifjaedrar Ab | Adjustable support device for lights |
-
1949
- 1949-11-28 GB GB30467/49A patent/GB689625A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1273066B (en) * | 1963-12-07 | 1968-07-18 | Industrifjaedrar Ab | Adjustable support device for lights |
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