US370687A - Reflector for head-lights - Google Patents
Reflector for head-lights Download PDFInfo
- Publication number
- US370687A US370687A US370687DA US370687A US 370687 A US370687 A US 370687A US 370687D A US370687D A US 370687DA US 370687 A US370687 A US 370687A
- Authority
- US
- United States
- Prior art keywords
- reflector
- head
- lights
- light
- lamp
- 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
Links
- 239000000203 mixture Substances 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 4
- 230000003137 locomotive Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
Images
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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
Definitions
- the invention relates to improvements in reflectors for locomotive head-lights; and it consists in the construction and novel combination of parts, hereinafter described, and pointed out in the claims.
- the figure in the drawing represents a central vertical section of the invention.
- 0 rep resents the lamp of the head-light
- A represents a parabolic reflector attached to the lamp-standard in such position that the light of the lamp 0 will be in its focus, so that the 1 reflector will send out a beam of parallel rays of parallel rays; but should the engineer de- (No model.)
- the reflector B which cuts off most of the light from the reflector A, but by its inner reflecting-surface focuses or concentrates the light at the desired point.
- the outer surface of the conical frustum B is also a reflectingsurface, so that the light that reaches the reflector Ain front of the base of the reflector B will, by means of multiplied reflect-ions, be concentrated or focused in front of the locomotive.
Description
(No Model.)
Tye. COOPER.
. REFLECTOR FOR HEAD LIGHTS, &c. No. 370,687. Patented SeptJZ'Y, 1887 WITNESSES 4 m lNVENTOR v 7 MW%L- ATTORNEYS N. PKTERS. Pluolobfihograplur. Washmgion, B c
UNITED STATES PATENT OFFICE.
THOMAS CHARLES COOPER, OF WINONA, MINNESOTA.
REFLECTOR FOR HEAD-LIGHTS, 84c.
SPECIFICATION forming part of Letters Patent N 0. 370,687, dated September 27, 1887.
Application filed November 16,1886. Serial No. 219.041.
To all whom it may concern:
Be it known that I, THOMAS CHARLES COOPER, acitizen of the United States, and a resident ofWinona, in the county of Winona and State of Minnesota, have invented certain new and useful Improvements in Reflectors for Head-Lights,&c.; and I do declarethe following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, and to letters or figures of reference marked thereon, which form apart of this specification.
The invention relates to improvements in reflectors for locomotive head-lights; and it consists in the construction and novel combination of parts, hereinafter described, and pointed out in the claims.
The figure in the drawing represents a central vertical section of the invention.
Referring to the drawing by letter, 0 rep resents the lamp of the head-light, and A represents a parabolic reflector attached to the lamp-standard in such position that the light of the lamp 0 will be in its focus, so that the 1 reflector will send out a beam of parallel rays of parallel rays; but should the engineer de- (No model.)
sire to concentrate or focus his light at a certain distance ahead of the engine he attaches the reflector B, which cuts off most of the light from the reflector A, but by its inner reflecting-surface focuses or concentrates the light at the desired point. The outer surface of the conical frustum B is also a reflectingsurface, so that the light that reaches the reflector Ain front of the base of the reflector B will, by means of multiplied reflect-ions, be concentrated or focused in front of the locomotive.
Having described my invention, I claim 1. The combination of the parabolic reflector, the lamp with its light in the focus thereof, and the detachable reflector having an inner reflecting-surface of the shape ofthe frustum of a cone, and situated with its axis coincident with that of the parabolic mirror and its base adjacent to the light, substan tially as specified.
2. The combination of the parabolic reflector, the lamp with its light in the focus thereof, and the detachable reflectorv having the shape of a conical frustum, provided with inner and outer reflecting-surfaces, and situated with its axis coincident with that of the parabolic reflector and its base adjacent to the lamp, substantially as specified.
In testimony whereof I affix my signature in presence of two witnesses.
THOMAS CHARLES COOPER.
Witnesses:
J. N. MAYBURY, D. E. VANCE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US370687A true US370687A (en) | 1887-09-27 |
Family
ID=2439700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US370687D Expired - Lifetime US370687A (en) | Reflector for head-lights |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US370687A (en) |
-
0
- US US370687D patent/US370687A/en not_active Expired - Lifetime
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