US38303A - Improvement in carbon-oil lamps - Google Patents

Description

0. V- FLORA.

Carbon Oil Lamp.

Patented A ril 28, 1863.

Even/Z17 737066666 2 1 yaw/M v ugnphen Washin UNITED STATES PATENT OFFICE.

ORLANDO V. FLORA, OF CINCINNATI, OHIO.

IMPROVEMENT IN CARBON-OIL LAMPS.

Specification forming part of Letters Patent No. 38,303, dated'Agril 28, 1863.

3, a horizontal section in the plane indicated by the line m 00, Fig. 2.

Like letters designate corresponding parts in all of the figures.

The first feature of my invention consists in the use of a vertically-corrugated, finelyperforated body or case, 0, around the burner, for receiving the air and transmitting it to the flame.

The general outline of the body or case is cylindrical, and it has a considerable number of vertical corrugations, c 0, substantially as shown in Fig. 3. These corrugations, in combination with the fine perforations of the metal or material employed, constitute the feature of my improvement. The effect of these corrugations is to catch the passing air, either when in motion by them or when the lamp is suddenly moved sidewise, and'to conduct a suflicient amount to the burner, and thereby prevent smoking from the motion of the air-generally caused by the want of the necessary continuous supply of air, arising from the production of cross-currents under the circumstances named; but these corrugations alone would not be sufficiently efiectual. In addition, it is necessary to transmit the air thus caught and retained by the corrugations freely but evenly to the flame. This is perfectly accomplished by finely perforating the metal throughout all the corrugations, so

I that the air in all is at once allowed to pass inside, but not too much in any one place, because of the fineness of the perforations. The material used is generally the ordinary perforated tin plate. I do not limit myself to any particular form of the corrugations or fineness of the perforations.

The second feature of my invention consisis in the employment of a peculiarly-shaped flange, 1), below the corrugated body 0, for the purpose of holding the air when the lamp is suddenly raised, and. securing a sufficient supply thereby. This flange is concave or dishing 011 the upper side, as at d, Fig. 1, so as to hold the air thereby. A similar flange, dishing downward, may be used above the corrugated body, or above where the air is admitted into the burner, to hld the air when the lamp is suddenly depressed. But this movement, very seldom occurring, it is not so important to guard against. Another way of arriving, though imperfectly, at the same result is to have the flange D, also dishing downward, as at f, Fig. l, to catch the air, and by having some perforations through the flange to transmit the air to the corrugated body 0. r

The advantages of my improvement arise from furnishing a full and even supply of air to the burner, under varying circumstances, with a simplicity and cheapness of construction heretofore unattained. With this improvement a very short chimney suffices, thus rendering the invention exceedingly well adapted to the production of portable coaloil lamps.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The corrugated body or case '0, of perforated metal or material, substantially as and for the purposes herein specified.

2. The concave flange D, in combination with the corrugated perforated body or case, substantially as and for the purpose herein set forth.

The above specification of my improved carbon-oil lamp signed by me this 21st day of November, 1862.

ORLANDO V. FLORA Witnesses:

PETER BELL, JOHN S. HULL.

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