GB399663A - Improvements in searchlights with the reflecting surface formed with curved metallicplates - Google Patents

Improvements in searchlights with the reflecting surface formed with curved metallicplates

Info

Publication number
GB399663A
GB399663A GB3233332A GB3233332A GB399663A GB 399663 A GB399663 A GB 399663A GB 3233332 A GB3233332 A GB 3233332A GB 3233332 A GB3233332 A GB 3233332A GB 399663 A GB399663 A GB 399663A
Authority
GB
United Kingdom
Prior art keywords
supports
sheet
searchlight
strips
reflecting surface
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
GB3233332A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3233332A priority Critical patent/GB399663A/en
Publication of GB399663A publication Critical patent/GB399663A/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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/003—Searchlights, i.e. outdoor lighting device producing powerful beam of parallel rays, e.g. for military or attraction purposes
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting

Landscapes

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

Abstract

399,663. Searchlight reflectors. FERRERO, M., 3, Via Baldassare Peruzzi, and SALANI, E., 109, Corso Trieste, both in Rome. Nov. 15, 1932, No. 32333. [Class 75 (ii).] The reflecting surface of a searchlight is formed by bending a single metal foil or strip, or a plurality of foils or strips, against a suitably shaped support or supports, and means are provided to adjust the strip or strips on to the support or supports. In the form shown in the Figure, a cylindrical reflector of parabolic outline is formed by pressing a rectangular metal sheet 2 against a series of adjoining supports 1, the edges of the sheet 2 being held in the channels 3<1>, 3<11>. The channel 3<11> is adjustable by means of screws 4 secured to brackets 5 on the outer edge of each of the supports 1. The brackets 5 are elastic so as to allow movements of the sheet 1 due to thermal effects. To reduce such movements, the sheet and supports have approximately the same coefficient of thermal dilatation. The searchlight is mounted on a carriage mounted on wheels running in a circular path about a central vertical pivot. When the reflecting surface is a surface of revolution such as a paraboloid, it is formed by a number of strips of approximately triangular cross section, with their vertices abutting at the vertex of the paraboloid, and held in position at the other end in a manner similar to that described above.
GB3233332A 1932-11-15 1932-11-15 Improvements in searchlights with the reflecting surface formed with curved metallicplates Expired GB399663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3233332A GB399663A (en) 1932-11-15 1932-11-15 Improvements in searchlights with the reflecting surface formed with curved metallicplates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3233332A GB399663A (en) 1932-11-15 1932-11-15 Improvements in searchlights with the reflecting surface formed with curved metallicplates

Publications (1)

Publication Number Publication Date
GB399663A true GB399663A (en) 1933-10-12

Family

ID=10336959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3233332A Expired GB399663A (en) 1932-11-15 1932-11-15 Improvements in searchlights with the reflecting surface formed with curved metallicplates

Country Status (1)

Country Link
GB (1) GB399663A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303127A (en) * 1992-07-16 1994-04-12 Sidney Kosann Lighting fixture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303127A (en) * 1992-07-16 1994-04-12 Sidney Kosann Lighting fixture

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