US183913A - Improvement in extension-lamp fixtures - Google Patents
Improvement in extension-lamp fixtures Download PDFInfo
- Publication number
- US183913A US183913A US183913DA US183913A US 183913 A US183913 A US 183913A US 183913D A US183913D A US 183913DA US 183913 A US183913 A US 183913A
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- US
- United States
- Prior art keywords
- shade
- ring
- lamp
- extension
- improvement
- 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 - Lifetime
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Classifications
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- 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
Definitions
- This invention relates to an improvement in what are called extension-lamp fixturesthat is to say, a fixture which, when suspend ed, will allow the lamp to be drawn down, or rest at different elevations.
- the shade serves as the counter-balance, and raises while the lamp is'drawn down.
- the shade can serve its full purpose only iu one predetermined position.
- the object of this invention is so to construct the fixture that the lamp and shade togcther will be drawn down; and it consists in aweighted ring, which forms substantially a crown for the shade when the two are together suspended by one end ot chains or cords over pulleys from the support above, combined with a shade-holder attached to the second end of the said chains or cords, and the lamp attached to the said shade-holder, all as more fully hereinafter described.
- A is the shade-ring, from which chains or cords a extend up over pulleys b, thence down, and the other end ot' the chains attached to a weight-ring, B, and so that by drawing down the shade-ring the weight-ring, ⁇ will rise, asindicated in broken lines; but when the shadering is at its highest elevation. then the weight-ring rests thereon, and forms a cap or crown to the shade-ring A, to which the shade C is secured by the set-screw d, or other device.
- the lamp-holder E is attached, so as to move up and-down with the shade and its ring, as indicated .in broken lines. ⁇
- the ring B is made of sufficient weight to counterbalance the shade, its ring, and lamp, and so that the lamp may rest at any position between its two extremes.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
Description
J. A. EVARTS.
EXTENSION LAMP FIXTURES.
N0,183,913, Patented Oct. 31.1876.
UNITED STATES PATENT QEFIGE.
JOHN A. EVARTS, OF WEST MERIDEN, CONN., ASSIGNOR TO THE BRADLEY AND HUBBARD MANUFACTURING COMPANY, OF SAME PLACE.
IMPROVEMENT IN EXTENSION-LAMP FIXTURES.
Specication forming part of Letters Patent No. 183,9 I3, dated October 31, 1876; application led May 6, 1876.
To all whom it may concern:
Be it known that I, JOHN A. EvARTs, of West Meriden, in the county of New Haven and State of Connecticut, have invented a new Improvement in Extension-Lamp Fixtures; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawings constitute part ot' this specification, and represent a sectional side view.
This invention relates to an improvement in what are called extension-lamp fixturesthat is to say, a fixture which, when suspend ed, will allow the lamp to be drawn down, or rest at different elevations.
In the usual construction the shade serves as the counter-balance, and raises while the lamp is'drawn down. Hence the shade can serve its full purpose only iu one predetermined position.
The object of this invention is so to construct the fixture that the lamp and shade togcther will be drawn down; and it consists in aweighted ring, which forms substantially a crown for the shade when the two are together suspended by one end ot chains or cords over pulleys from the support above, combined with a shade-holder attached to the second end of the said chains or cords, and the lamp attached to the said shade-holder, all as more fully hereinafter described.
A is the shade-ring, from which chains or cords a extend up over pulleys b, thence down, and the other end ot' the chains attached to a weight-ring, B, and so that by drawing down the shade-ring the weight-ring,` will rise, asindicated in broken lines; but when the shadering is at its highest elevation. then the weight-ring rests thereon, and forms a cap or crown to the shade-ring A, to which the shade C is secured by the set-screw d, or other device. To the shade-ring the lamp-holder E is attached, so as to move up and-down with the shade and its ring, as indicated .in broken lines.`
The ring B is made of sufficient weight to counterbalance the shade, its ring, and lamp, and so that the lamp may rest at any position between its two extremes.
I claim- The combination of the weight-ring B, the shade-ring A, to which the lamp and shade are attached, the said shade-ring and weightring adjustably connected by chains or cords from a support above the said weight-ring, constructed to rest upon or crown the shade, all substantially as described.
J. A. EVARTS.
Witnesses:
R. P. RAND, C. F. LrNsLEY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US183913A true US183913A (en) | 1876-10-31 |
Family
ID=2253318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US183913D Expired - Lifetime US183913A (en) | Improvement in extension-lamp fixtures |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US183913A (en) |
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0
- US US183913D patent/US183913A/en not_active Expired - Lifetime
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