USRE3817E - deiscoll - Google Patents

Description

SCHMIDLIN L DRISCOLL.

' Reflector for Lamps.

No. 3,817. Reissued Febi i. 187G- f :i lgen/Zani' v- 72270055 UNITED STATES PATENT OEEIcE.

WILLIAM GUsTAvUs scEMIDLIN AND .IEEEMIAE w. DruscoLL7 or NEW YORK, N. Y. y

REFLECTOR FOR LAMPS.

Specification forming part of Letters Patent No. 33,962, dated December 17, 181 5 lReissue N o. 3,817, dated February l, 1870.

To all lwhom it may concern :4

Be it known that we, WILLIAM GUSTAVUS ScHMIDLIN and JEREMIAI-I W. DRIscoLL, of the city and State of NewYork, have invented, made, and applied to use a certain new and useful Improvement in and other Lamps, Gas, Src. 5 and we do hereby declare that the following is a full, clear, and exact description of our said invention, reference being had to the annexed drawing, making part of this specification, wherein- Figure l is a vertical section of' our reflector, Fig. 2 is an end view, and Fig. 3 is an inverted plan.

Our said invention consists in a two-part flaring reflector, located in such a manner above the flame of the lamp or gas that the light is thrown ofi horizontally, or nearly so.

This invention is especially adapted to the lamps of streets, because the light can shine down upon the street and sidewalk; but the light heretofore wasted in shining upward :Ls thrown ofi' by our reflector nearly horizontally up and down the streets.

Tn the drawing, a represents the burner of. any gas or other lamp. b b are supports from the ring c to the reflector d c. ,This ring c should be provided with the screw l, by which the parts can be clamped to the burner and the reiiector held at any desired height.

The reflectors d c are formed as truncated eener., or sections of a cone or pyramid, with the smallest ends toward each other. The supports b -b are attached at these points, and hence an opening is left ors, over the llame, as at j'.

It will now be seen that the reflectors d and c fiare away from the flame, above and on opposite sides thereof. so that the light is, by the interior of these reflectors, thrown off nearly horizontally, and thus preventing the waste of light heretofore usual, particularly in streetlamps. l

We have shown one of these reflectors d as the section of a cone and the other as the sec- Reectors for `Street between the reflecttion of a pyramid, and we prefer that the refiectors be of tin, or other polished sheet metal, protected with a sheet or sheets of glass; but any other material may be employed. Where the glass is corrugated the tin should be plain, and the reverse.

The reflector which we have shown is especially adapted to the iiat flame of a gas streetlainp, and generally the light requires to be reflected up and down a street, in which instance the small side reflector Z m may be applied, not only to throw any light downward, but also to act as connections between the reflectors d and e.

In street-lamps located at corners, and others where the light is required in four directions, two more reflectors may be employed, similar to and connected with the reflectors d e.

Any desired character of burner may be ernployed with this reflector.

By the use of conical or pyramidal reflectors, placed as aforesaid, the construction is faeilitated, as the sheet metal onlyrequires to be bent, folded, or cut out, and made up instead of being stretched or drawn up by dies or hand-work into a parabolic or globular section.

IVe claim as our inventionl. The reflector formed of two or more truncated-conical or pyramidal sections, d e, flaring away from the flame, substantially as and for the purposes specified.

2. The reflectors l m, combinedwith the conical or pyramid-al sectional reflectors d c, substantially as and for the purposes specified.

In witness whereof we have hereunto set our signatures this 4th day of October, A. D. 1869.4

IVM. G. SCHMIDLIN. J. WV. DRISCOLL.

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