US228706A - Reflecting-mirror - Google Patents

Description

(No Model.)

0, WEIDT. Reflecting Mirror.

No. 228,706. Patented June 8,1880.

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' ATTORNEYS:

UNITED STATES PATENT OFFICE.

CHARLES WEIDT, OF POMEROY, OHIO.

REFLECTlNG-MIRROR.

SPECIFICATION forming part of Letters Patent No. 228,706, dated June 8, 1880.

Application filed April 8, 1880.

To all whom it may concern;

Be it known that I, CHARLES WEIDT, of Pomeroy, in the county of Meigs and State of Ohio, have invented certain new and useful Improvements in Reflectin Mirrors; and I do hereby declare that the following is a full. clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same,

reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure l is a front view. Fig. 2 is a side elevation, and Fig. 3 is a diametrical horizontal section of the two mirrors constituting the reflector.

Similar letters of reference indicate correspondin g parts in all the figures.

My invention has relation to that class of reflectors which are placed outside of a window in the open air, for the purpose of enabling those within the house to observe, with out opening the window, what is going on up or down the street, or what persons are approaching the house from either side; and it consists in an improved construction of the mirror frames, substantially as hereinafter more fully set forth.

My improved reflecting-mirror consists of two separate mirrors, A A, which are of circular shape and united edgewise, as usual, at an angle of about ninety degrees, by a triangular block, B, interposed between the meeting-edges of the two mirror-frames, as more clearly shown in Fig. 3 of the drawings. This block is made with a sleeve or socket, 1), upon the face of which is soldered a nut, c, which receives a set-screw, d, by means of which the reflector may be adjusted vertically upon the arm 0, which is inserted through the socket b.

Each of the circular mirrors A A is framed in a circular sheet-metal box or casing, DD,

' of a shallow conical shape, and provided with a series of concentric beads or corrugations, e e, surrounding its apex or center f. These corrugations or circular ribs serve to brace and strengthen the casings, which may thus be made of very thin and inexpensive sheet metal, and yet possess the requisite degree of strength and durability.

An air-space, g, is left between the back of the mirror and conical back of the box or casing, into which it is inserted, and moisture is prevented from entering this space by cement- (No model.)

ing the circular rim or periphery of the mirror into the box with any kind of suitable insoluble cement that will harden by exposure to the air, as shown at h.

The projecting rim of the mirror frames or casings D D may be' ornamented by castmetal ornaments E, of any desired design, and the reflector is supported in its proper position outside the window by means of the bent arm or support 0, to which reference has been already made, so that each of the mirrors will be presented to the window at an angle of about forty-five degrees.

By placing the mirrors in hollow conical and concentrically-corrugated casings in the manner described, and sealing their edges airtight to prevent ingress of moisture, the glass will not dew orbecome discolored, as where this is backed direct, and without any intervening air-space, upon a wooden or metallic back; nor will the glasses become loosened in their frames by the expansion and contraction of these, caused (exposed as they are in the open air all the year round) by atmospherical and meteorological changes, because such expansion and contraction will be equalized or taken up, as it were, by the circular and concentric corrugations c e 0, so that my improved reflector will be in good working order all the year round and under all conditions and circumstances to which it may be subjected.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- The herein-described reflecting-mirror for windows, composed of two circular sheet-metal casings, D D, of shallow conical form, corrugated or ribbed concentrically at e c e, and provided each with a circular mirror, A A, sealed air-tightwithin its proper casing by a peripherical band of cement, h, the said casings, with their mirrors, being united to each other edgewise at a proper angle and provided with means for their attachment to the window sill or casing, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

CHARLES WEIDT.

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