US315433A - Reflector - Google Patents

Description

2 sheetss eeee 1. S. C. `MOWER.

REF LLLLL R.

No. 315,433. Patented Apr, 7. 1885.

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, S. C. MOWER.

(N0 MOdeL) REPLETOR.

No. 315,433. Patented Apr. 7, 1885.

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UNITED STATES PATENT EFICE.

SAMUEL c. MowEE, or MILWAUKEE, WISCONSIN.

REFLECTO R.

SPECIFICATION forming part of Letters Patent No. 315,433, dated April 7, 1885.

Application filed November 12, 1884.

To all whom it may concern:

Be it known that I, SAMUEL C. MoWER, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Reectors; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to improvements in reectors for lighting apparatus, and will be fully described hereinafter.

In the drawings, Figure l represents a pendent lamp tted with a reflector embodying my invention. Fig. 2 is a crosssection showing the general construction of my device, and Fig. 3 is a diagram illustrating the action of my improved reflector. v The object of my invention is to produce a reflector by means of which the light-rays which wouldotherwise be of little or no value are concentrated and redistributed within a certain zone with useful effect. The increase in the intensity and penetration of the light given by my improved reflector is due to a prismatic refracting collar or base of glass fitted above and surrounding the focus of a lamp or of any other lighting device, its sides being at such angles that the light-rays striking from below are deflected and thrown inward upon a relector, from which they are thrown off at converging angles below the lamp or burner.

A is the lamp, and B indicatesthe pendent frame supporting the same in the usual manner.

C is the reilector-frame, the central core, c, of which has its lower portion made in the shape of a truncated cone, as shown, while its upper rim projects slightly beyond the cover or roof c', and is screw-threaded to receive the fastening-collar c2, that is provided with a screw-thread in its inner periphery.

D is the reflector, which is made in the shape of the inverted lower portion of a bell, but may also be made in the form of an inverted truncated cone, according to the refracting effectit is intended to produce through the prismatic glass collar or base E. This lat- (No model.)

ter is supported by means of a ilange, c,

formed on the lower edge of the conical portion of the core c, and projecting downward on an incline corresponding tothe inner face of the prismatic collar. The sides ec of the said collar are more or less inclined, according to the character of the light required and to the height at which the lamp or burner has to be suspended. The cover or roof c of the reflector-frame is extended slightly beyond the retlectors outer edge, as at c4, so as to rest against the upper edge of the supporting-ring F. 'Ihis latter is provided at diametricallyopposite points with vertical sleeves ff, and these sleeves are adapted to slide up and down along the rods b b of the pendent frame, and y to be adjusted at any desired height by means of lthumb-screws f f', in the usual manner.

I propose generally to give to the lower flared portion of the core c a reiiecting-surface; but

this forms no very essential part of my invention, as in some cases a reflectingsurface will not be of any special service.

Having thus described my invention, what r I claim as new, and desire to secure by Letters C Patent, is-

1. In a lighting apparatus, the combination, with an inverted truncated-cone or bell shaped reflector held in an adjustable frame above I and around the light, of a prismatic collar` or base of glass depending therefrom, substantially as and for the purpose set forth.

2. In alightingapparatus, thecombination of.Y the lamp A, pendent frame B, reflector-frame C, having core c, wit-h flanges cl c, cover or roof c', and fastening-collar c2, refiector D, prismatic glass collar E, and Supporting-ring F,

provided with sliding sleeves ff and adjusting-screws ff, substantially as Shown and

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