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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
  • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment

Definitions

• the same has been attached to lazy-tongs, the arms thereof forming conduits for the gas, a cord and Weight being provided to raise and lower it; or it has been secured to a tube sliding vertically in a packed cylinder; or the burner has been attached to a hollow arm working adjustably over a vertical rod, secured to a proper base, said arm being of sufficient length to support the shade out of contact with the vertical rod.
• the two former devices are expensive to manufacture and liable to get out of order easily.
• the latter device having most, if not all, the weight on one side, is easily upset, especially when the burner is much elevated.
• none of them are means provided for conveniently raising the shade and retaining it in any desired position, independently of the burner, to regulate the intensity of the light or flood the room with it.
• the object of my invention is to produce a drop-light, the gas-burner and shade of which can be adjusted vertically, either independently of each other or together, to regulate the amount and elevation of the light, and which will not readily topple over; and it consists in the devices hereinafter more fully described and claimed.
• Figure l is a side elevation of a drop-light embodying my invention.
• Fig. 2 is a side elevation of the same, showing the shade elevated to flood the apartment.
• A is a stand of any shape or configuration desired, upon which is secured a rod, B, of any desired height or diameter.
• One end of an arm, 0, encircles said rod B, and is adjustable thereon, being held in any desired position by means of the set-screw D.
• the other end of said arm is provided with means for securing the common elastic hollow tube E thereto, and is recessed to receive and retain an Argand or other gas-burner.
• Arms G may be secured to the burner to support the shade, or they may be fastened to a ring fitting over the burner; or any of the well-known means for supporting the shade may be used.
• the openings in the top of the shade O and the chimney I are of such relative diameters as to leave a sufficient space between the two to permit the rod B to freely pass between them, as shown in Fig. 1.
• a ring, L is provided with a collar, N, which is movable upon the vertical rod B, a setscrew, M, securing it rigidly in any desired position.
• the top of the shade O is secured to this ring in any convenient manner.
• The. shade is thus rendered adjustable independently of the burner, and can be supported without the use of the arms G.
• the drop-light thus constructed permits the gas-burner to be placed at an elevation convenient for reading or work, allows the shade to be elevated and retained above the burner to permit the light to flood the room, and obviates the objection incident to the third class of drop'lights above enumerated, of being easily overturned.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Gas Burners (AREA)

Description

Publications (1)

Family

ID=2240186

Family Applications (1)

Country Status (1)

• 0
  • US US170779D patent/US170779A/en not_active Expired - Lifetime

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