US177533A - Improvement in illuminating apparatus for bakers ovens - Google Patents

Description

. A. MEI-ER--a P.- BEURER,v ILLUMINATING,'APPARATUS Fon BAKERS ovENsQ- No, 177,53@ Patented my v1es, 187e.

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the lamp-case, as shown, but not attached' yiivrrn'in STATES FFICE.

ANTON MEIER AND. PETER DEUKER, OF NEW YORKN. Y.

IMPROVEMENT IN lLLUMlNATING APPARATUS FOR BAKERS OVENS.

Specification forming part of Letters Patent No. 177,533, dated May 16, v1876; application filed April 29, 1876. 4

10 all whom it may concern Be it known that we, ANTON MEIER and PETER DEUKER, both of the city, county, and State of New York, have jointly invented certain Improvements in Illuminating Apparatus for Ovens, of which the following is a specification:

This invention relates to a device for' illumi-A nating the interior of bakers7 ovens, the object being to throw a bright Ilight to the farthest innermost recesses of the oven during the baking, or at any other time, the source of light being invisible to the person inspecting the interior of the oven, but entirely under control.,

' In the drawings, Figure l isa longitudinal vertical mid-section on a large scale, illustrating our invention. Fig. 2 is a perspective view of the lamp-case; and Fig. 3 is a horizontal section through the front wall oi' the oven, showing the relative positions of the illuminating 'apparatus and the oven-door. j

Let A represent the interior of an oven 5 B, the front wall ofthe same; and C, the door or door-opening, all o` which mayrbe'constructed in the usual way.

In the front wall B, and as near the door as convenient, .is built a rectangular cast-iron frame, D, to bound an aperture, E, which extends through the wall. To this frame is titted a shut-oft' slide, F, which plays in grooves in the flanges of the frame .D, and which may be conveniently operated through the oveni door C. The opening E may be asclose to the oven-door as shown in Fig. 3, but not so close that the slide F, when drawn out, will interfere with the passageof articlesthrongh the oven-door. G is a lamp-case, arranged to slide freely into the aperture E, and rest against atlange of the frame D, so as to prevent the escape of hot air from the oven.

This case may be made ot' sheet-iron, and itslide in vertical grooves in the case, so as to' be readily removable-.for cleaning, as shown H is anordinary lamp, to set in thereto. A stop, b, is provided toiprevent the lainp being pushed too far forward. The lamp is provided with an adjustable rellector, I, mounted on a vertical spiud1e,o, attached to the lamp body orhandle, and having its focus arranged to properly concentrate and reect the rays from the burner. When the oven is to be heatedfor baking, the slide F is pushed in so as to cut ott or close th'e aperture, so that no heat may escape. The lampcase may be taken out, the lamp cleaned and got ready, and the glass front a removed and wiped oft'. When the oven is ready for baking the case is pushed into the opening E as far as it will go, and the lamp lighted and put iu it. The slide F may now be drawn back, and' the glass front, while it prevents any escape of heat lfrom the oven, will permit the reiiector to throw a bright light into thefarthest recesses of the same. By turning the reflector on its spindle by mea-ns of the arm d, the light may be directed to any point, as desired. A lamp is most convenient,

but agas-burner, provided with a stand and a flexible tube, might be used. For the glass front ct we prefer to use a piece of thick French plate, but a plate tempered by the Bastie process \vould answer very well. The lamp should havefa chimney of the same material, so that both may be the better able to withstand vthe heat from the oven.

In the ordinary way of illuminating ovens the baker throws open the door, and introduces a burner or hand lamp. The light being necessarily visible, and between him and the interior of theoven, he is partially blinded by the glare, and the steam arising from the baking bread prevents the rays of light from penetrating to the extreme depth of' the oven. Moreover, he is compelled to throw the door wide open, and much heat is lost.

Our device completely obviates these deout for cleaning. The lamp may also be readily removed, and the reflector taken off for cleaning or polishing.

Having thus described our invention, what The lamp-case is readily' removed, and the glass front taken.

we claim as new, and desire to secure by Let-V rect the reected rays to any part of the oven desired, when arranged to operate as and for the purposes set forth.

In witness whereof we have hereunto signed our names'in the presenee'oi' two subscribing witnesses.

ANTON-MEIER.

l PETER DEUKER. l

'Witnesses:

HENRY GONNETT,

ARTHUR C. FRASER.

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