|Publication number||US1523841 A|
|Publication date||Jan 20, 1925|
|Filing date||Sep 20, 1921|
|Priority date||Sep 20, 1921|
|Publication number||US 1523841 A, US 1523841A, US-A-1523841, US1523841 A, US1523841A|
|Inventors||William H Schoonmaker|
|Original Assignee||William H Schoonmaker|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (3), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Jan. '20, 9 1,523,841'
W. H. SCHOONMAKER HEADLIGHT Filed Sept. 20, 1921 WILLIAM H. SCHOONMAKJEE, 0F MONTCLAIR, NEW JERSEY.
Application filed September 20, 1921.
, To all whom it may concern:
In the accomplishment of these objects vT have evolved a headlight having certain novel features of construction, combinations and relations of parts as disclosed in the following specification and illustrated in the aocom anymg drawing. I
In tie drawing referred to, l have illus trated typical embodiments of the invention in which Figures 1 and 2 are longitudinal sectional and front views respectively of one form of the invention, and in which Figure 3 is a longitudinal sectional View of a slightly modified form of the device.
In both the forms shown, the lamp house or easing 5 is made rectangular and substantially square, having the upper portion of its front end open to provide a rectangw lar outlet 6 for the beam of light and the lower portion of such front end covered by an upright wall 7 of a height sufficient to extend above the filament of the lamp.
The lamp is indicated at 8, and the same is suitably supported in the bottom of the casing with its filamentbelow the upper edge of the blind or shield 7 so that such filament will not be visible from the front of the lamp structure.
The reflector which is located over and in back of the lamp consists of a series of concave reflector stri s 9, 10, 11 and 12 offset one in front 0 the other and each arranged to reflect the light which it collects substantially horizontally so as to form a beam whose constituent rays are substantially horizontal, as indicated by the lines 9*, 10, 11* and 12*. These reflector strips may constitute in effect the oflset sections of the upper half of a parabolic curve.
In the first form of the invention, the lamp is shown as set quite closely behind Serial No. 501,919.
the filament covering shield, whereas, in the second form, the lamp is set further back and the reflector sections are inclined more nearly parallel to the horizontal. With this latter form, on account of the reduced angle of the reflecting faces, the possibility of any glare resulting from looking directly at the reflecting surface, is lessened.
The lower half of the lamp in the illustration, is silvered or provided with a suitable reflector 13 so as to reflect the light emanating from the front of the lamp backwardly and upwardly against the beam reflecting strips.
In both the forms illustrated, the lamp is supported in a forwardly inclined position so as to expose a full clear halfof the lamp to the reflector, the lamp socket 14.- being for such purpose set at an incline, such as indicated.
The reflector strips preferably extend straight across the entire width of the lamp casing so as to collect all possible light and so as to transmit a wide horizontal light beam. Aside from the reflecting strip, the entire interior of the lamp house is prefably darkened. This darkening may even extend to the narrow connecting strips 15 which connect the adjoining oflset ends of he reflector strips. By tilting the lamp body or by varying the angle of the reflector strips, the beam of light may be inclined to strike the road at the proper angle, the filament shielding wall and the lamp reflector 13 being of suflicient extent to pre- Vent exposure of the filament at the front of the lamp when the lamp is thus tilted.
' What I claim is:
1. A headlight construction comprising a lamp casing having a substantially rectangular outlet for the beam of light and a lamp shield at the lower edge of such outlet, a lamp in back of said shield and a reflector at the rear of the lamp and con-' sisting of a series of concave reflecting strips arranged in offset relation and extending substantially horizontally and straight across the lamp casing, whereby to provide a beam of light of uniform width in its vertical dimensions but having a diverging formation in its horizontal dimensions.
2. A headlightconstruction comprising a lamp casing having a substantially 1'ec tangular outlet for the beam of light, a
lamp shield at the lower edge of such outlet,
a lamp at the rear of said shield and a reflector at the rear of the lamp and consisting of a series of concave reflecting strips arranged in offset relation and extending substantially horizontall and straight across the lame casing w ereby to provide a beam of lig t of substantially uniform width in its vertical dimensions but having a fan-like diverging formation in its horizontal dimensions, and a reflector covering the forward side of the lamp and arranged to reflect the light emanatin from the forward side thereof rearwar 1y against the beam reflecting strips.
3. A headlight construction comprising a lamp casing having a substantially rectang'ular outletfor the beam of light and a lamp shield at the lower edge of such outlet, a lamp at the rear of said shield and a reflector at the rear of the lamp and consisting of a series of concave reflecting strips arranged in oli'set relation, said lamp being set in a forwardly inclined relation to thereby expose a full clear side of the same to the reflecting stri )s and the lower forward side of the lamp icing covered by a reflectin medium.
in testimony whereof I afiix my signature.
WILLIAM H. SGHOONMAKER.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4188657 *||Dec 19, 1975||Feb 12, 1980||Whiteway Manufacturing Co., Inc.||Reflector and method of producing different, distinctive and predictable light patterns therefrom|
|US4729072 *||Jan 21, 1987||Mar 1, 1988||Carlos Oroza||Front lighting system for motor vehicle|
|WO1997030311A1 *||Feb 12, 1997||Aug 21, 1997||Teknoware Oy||Light fitting|
|Cooperative Classification||F21W2101/02, F21V7/04|