US660336A - Composite reflector. - Google Patents

Description

No. 660,336. Patented Oct. 23, I900.

W.'A. PENFIELD.

COMPOSITE REFLECTOR.

(Application filed Dec. 11, 1899.)

{No Model.)

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UNITED STATES PATENT OFFICE;

WILLIAM A. PENFIELD, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE BRADLEY & HUBBARD MFG. CO., OF SAME PLACE.

COMPOSITE REFLECTOR.

$PEOIFICATION forming part of Letters Patent No. 660,336, dated October 23, 1

' Application filecl December 11, 1899. Serial No. 739,860- (No model.)

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Be it known that I, WILLIAM A. PENFIELD, of Meriden, in the county of New Haven and State of Connecticut, have invented-a new Improvement in Composite Reflectors; 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 of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a view in front elevation of one form which a composite reflector constructed in accordance with my invention may assume; Fig. 2, a view of the reflector in verticalcentral section; Fig. 3, a detached view of the reflector-body; Fig. 4;, a similar view of the reflector-ring.

My invention relates to an improvement in composite reflectors of that class employing a light-collecting surfaceand a light-diffusing surface, the object of my present invention being to provide a simple, convenient, and effective reflector adapted to be readily kept clean.

With this end in view my invention consists in certain details of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In carrying out my invention as herein shown I employ a cup-shaped sheet-metal ring A, having its inner surface coated with a white enamel to form a non-metallic reflecting-surface A, which I do not limit myself to producing-in any particular way nor of any particular material, so long as it retains a light-diffusing character and is adapted to withstand the heat of the flame and to becleaned and restored to its original condition by being wiped with a cloth or brushed with a brush. As shown, this ring is formed upon its under edge with an outwardlyturned flange A which is clasped over a head I), formed upon the outer edge of the cup-1ike sheet-metal bodyB of the reflector. I do not, however,litnit myself to securing the said ring to the said body in any particular Way, though the means employed will permit the ring to be removed conveniently. The extreme intion.

ner portion or bottom of the cup-like body is highly polished to form a ligh t-collecting surface B, which is exposed through the central opening A of the said ring and which is lo cated adjacent to the burner C, which may be of any approved construction and which is connected with a nipple D, which in turn is cnnected with agas-supply tube, which is' not shown.

By forming the ring A of sheet metal and adapting it to be set within the body B and connecting it with the body independently of its inner edge I secure not only a simple and cheap construction, but also a neat and efiective constructiomowingto avoidingthe clumsy line of demarcation which would be entailed by utilizing the inner edge of the ring for securing the same to the body.-

In using my improved reflector the polishedmetal reflecting-surface B" will retain its initial brightness and reflecting power for a very long time without the necessity of being repolished, for the reason that inasmuch as it is located adjacent to the base of the flame it is not thereby tarnished nor exposed to sooty deposits. On the other hand the unpolished non-metallic reflecting-su rface A of the ring, which is located adjacent to the grosser outer portion of the flame, will become tarnished and fouled by sooty accumulations, which, however, may be entirely and readily removed by wi ping the said surface with a cloth or perhaps brushing it with a suitable brush, when the reflector considered as a whole is restored to its initial condition, and this very easilyon account of the simplicity of the operation of cleaning the surface A, whereas if this were a polished metallic surface the entire interior of the reflector would have to be polished with polishing material and implements at some cost for time, labor, and material.

In view of the suggestions contained herein I would have it understood that I do not limit myself to the exact construction shown and described, but hold myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of my inven- I am also aware, however, that a composite reflector having a central light-collect- \viih a sheet-metal cup-like body having the inner portion of its inner surface adapted to collect light, of a sheet-metal cup-like ring shaped to set within the outer portion of the said cup-like body, having its inner surface provided with a non-metallic, light-diffusing surface, and adapted to be secured to the said I body by its outer edge and therefore inde pendently of its inner edge, whereby the line of demarcation between the light-collecting and light-diffusing surfaces of the reflector is reduced to the simplest form.

2. In a composite reflector,the combination with a sheet-metal cup-like body, having the inner portion of its inner surface adapted to collect light, of a sheet-metal cup-like ring shaped to set within the outer portion of the said cup-like body, having its outer edge constructed with a flange by means of which it is connected with the edge of the said cuplike body, and having its inner face provided with a non-metallic light-diffusing surface, whereby the line of demarcation between the lightcollecting and light-di ffusing surfaces of the reflector is reduced to the simplest form.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

WILLIAM A. PENFIELD.

Witnesses:

A. B. SAVAGE, -W. I. SMITH.

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