US159941A - Improvement in drop-lights - Google Patents

Improvement in drop-lights Download PDF

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US159941A
US159941A US159941DA US159941A US 159941 A US159941 A US 159941A US 159941D A US159941D A US 159941DA US 159941 A US159941 A US 159941A
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arm
lamp
frame
drop
lights
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/18Means for suspending the supporting construction
    • E04B9/20Means for suspending the supporting construction adjustable
    • 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
    • F21V21/36Hoisting or lowering devices, e.g. for maintenance
    • F21V21/38Hoisting or lowering devices, e.g. for maintenance with a cable

Definitions

  • the object of my invention is to construct a chandelier for lamps in such a manner that the lamp-holders can be readily lowered when they have to be replenished, and as readily raised; and this object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawing, in which Figure 1 is a side view of a chandelier made according to my invention; Fig. 2, a section on the line 1 2, looking in the direction of the arrow; and Fig. 3, a section illustrating a modification of my invention.
  • -A is the permanent frame of the chandeliers, and is secured at the top to the ceiling of a room in any suit-able manner.
  • On each vertical portion of this frame are formed guides a a for a slide, 1), to which is connected the upper end of the arm B, the latter carrying the lamp-holder D.
  • Each arm B has, near its lower end, a pin or projection, 61, adapted to a recess in the frame, and serving to maintain the said arm in its proper elevated position.
  • the said arm After moving the arm B outward, as shown on the left of Fig. 1, until its pin 01 is Withdrawn from the recess in the frame, the said arm can be lowered to the position indicated by dotted lines, where it will be at a proper altitude to permit the easy removal of the lamp, or to allow ready access to the wick When it has to be trimmed, or when the lamp has to be lighted or replenished with oil, after which the arm 13 can be elevated and permitted to resume its former vertical position against the frame, where it will be locked by thepin (Z.
  • each arm B I sometimes provide it with a projection, e. to embrace the frame, and thereby steady the arm laterally without interfering with its outward movement; or I make in that edge of the frame which is adjacent to the arm a concave or V-shaped groove, adapted to a corresponding rib on the arm. (See Fig. 3.)
  • a guide or guides may be secured to the wall and lamp-carrying arms adapted to the guides, in the manner described above.
  • I claim as my invention A lamp-chandelier in which are combined a fixed frame having a guide or guides with one or more lamp-supporting arms, each hinged to a slide adapted to the guide, and having a retaining-pin adapted to a notch or notches on the said fixed frame, all substantially as set forth, for the purpose specified.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

J. C. LOVE.
Patented Fb.l6,-i875.
h D L D. 0 r
THE GRAPmc CmNOTOrLITHJQ .141 PARK PLAOL JOHN 0. LOVE, or PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN DROP-LIGHTS.
Specification forming part of Letters Patent No. 159,9 1 1, dated February 16, 1875 5' app ication filed December 26, 1874.
To all whom it may concern:
Beit known that I, JOHN 0. LOVE, of Philadelphia, Pennsylvania, have invented Improvements in Drop -Light Chandeliers, of which the following is a specification:
The object of my invention is to construct a chandelier for lamps in such a manner that the lamp-holders can be readily lowered when they have to be replenished, and as readily raised; and this object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawing, in which Figure 1 is a side view of a chandelier made according to my invention; Fig. 2, a section on the line 1 2, looking in the direction of the arrow; and Fig. 3, a section illustrating a modification of my invention.
-A is the permanent frame of the chandeliers, and is secured at the top to the ceiling of a room in any suit-able manner. On each vertical portion of this frame are formed guides a a for a slide, 1), to which is connected the upper end of the arm B, the latter carrying the lamp-holder D. Each arm B has, near its lower end, a pin or projection, 61, adapted to a recess in the frame, and serving to maintain the said arm in its proper elevated position.
After moving the arm B outward, as shown on the left of Fig. 1, until its pin 01 is Withdrawn from the recess in the frame, the said arm can be lowered to the position indicated by dotted lines, where it will be at a proper altitude to permit the easy removal of the lamp, or to allow ready access to the wick When it has to be trimmed, or when the lamp has to be lighted or replenished with oil, after which the arm 13 can be elevated and permitted to resume its former vertical position against the frame, where it will be locked by thepin (Z.
In order to insure the lateral steadiness of each arm B, I sometimes provide it with a projection, e. to embrace the frame, and thereby steady the arm laterally without interfering with its outward movement; or I make in that edge of the frame which is adjacent to the arm a concave or V-shaped groove, adapted to a corresponding rib on the arm. (See Fig. 3.)
To prevent the entire withdrawal of the lamp-carrying arm from the frame, I make on or attach to the latter a suitable stop, m.
When my invention has to be applied to a wall-lamp, a guide or guides may be secured to the wall and lamp-carrying arms adapted to the guides, in the manner described above.
I claim as my invention A lamp-chandelier in which are combined a fixed frame having a guide or guides with one or more lamp-supporting arms, each hinged to a slide adapted to the guide, and having a retaining-pin adapted to a notch or notches on the said fixed frame, all substantially as set forth, for the purpose specified.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
JOHN 0. LOVE.
Witnesses:
HARRY SMITH, HUBERT HoWsoN.
US159941D Improvement in drop-lights Expired - Lifetime US159941A (en)

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