US994447A - Electric radiatory stove. - Google Patents

Description

G. EGLY.

ELECTRIC RADIATORY STOVE.

APPLICATION FILED 00127, 1910.

Patented June 6, 1911.

d j 1illu1v 1.. l z 4 M 7 4 w b \N N To all whom it may concern:

NI ED PATENT- OFFICE.

GEORG EGLY, OF TREPTOWpNEAR *ER-LIN, GERMANY, ASSIGNOR TO GEDRtTEDEE smivrn'irs & cd, or BERnIn; GERMANY.

ELECTRIC. RADIATORY' STOVE.

. I I a Be it known that I, Gnone EGLY, a subject of the German Emperor, and residing at Treptow, near Berlin, Germany, haveinvented certain new and useful Improve ments in Electric Radiatory Stoves, of which the following is a specification.

My invention relates generally to electric radiatory stoves, andparticularly to electric radiators therefor substantially consisting of a non-metallic, highly refractory, good heat-conducting, protective tube, in which a rod is heated.

Important objects of my invention are to prevent the heating-rod in a radiator of this type changing its shape owing to the heat,

and to prevent air entering into the protective tube surrounding the heating-rod, so that the latter cannot-burn away too rapidly. To these ends, the rod is carried by its ends in long, electrically-oonductin sleeves, but so, however, that it can expand freely longitudinally in both directions.

The sleeves are connected with the protec-' tive tube by special holders connected air-. tight with the latter. In order as much aspossible to limit the admission of air through the ends of the sleeves surrounding the rod I provide special caps which close the outer ends of the sleeves air-tight.

One illustrative embodiment of my invention and a modification thereof are represented by way of example in the accom-.

panying drawings, wherein:--

Fi re 1' shows a complete radiator in longl udinal section, and Fig. 2 is a like view showing one end of, a symmetrical radiator of a modified form.

Referrin firstly to Fig. '1, the rod a, composed or exampleof carbon, is in the protective tube 1) which has'holders 11 eemented on its ends and ispreferably made of silit,. a mass composed of silicon, carbon and nitrogen. The rod a is surrounded but not firmly held at its ends by electricallyconducting sleeves c, c'jfitted by means of screw-threads as air-tight as possible in the holders (i, so that it can expand freely longitudinally in both directions, and changes of shape due to expansionare prevented The holders (1 carrymg; the protective tube are held in the blocks e, e, composed of a resisting material, isuch as carbon, stone,

Specification of Letters Patent. Application filed October 27,1910. BerialNo. 589,459,."

. close against the bottom of the cap parts.

In order to; prevent air entering through the PatentedJuneQfi, 191.1-

silit or the like, at the ends oi the furnace.

let into .the blocks e,.e over the ends of the sleeves c, c and in this illustrative embodiment are made hollow and serve as cooling means. The bottom of each cap is recessed" so that the ends of the sleeves 0, 0 surrounding the rod a project into the socket-like bottoms of the caps and are effectively cooled by coldwater introduced into the caps. The cap 71, at the one end of the rod is fitted conically, while the cap it at the other end is fitted cylindrically in its block,

an intermediate metal ring 9, g fir'mly connected with the block being", however, provided in both cases. The cylindrical cap it isscrewed air-tight to its metal ring g, while the 'co'hical cap 72, isground into its metal ring 9. Current is su plied to the rod a'by way of the caps. The protective tube 6 and the holders'd-are able to expand owing to clearance being provided at the one end between the holder and the bot-' tom of the cap-h, while the other hd'lder is Referring now to Fi 2, the burned he ating-rod a in this modil led form of radiator can be more conveniently exchanged without its being necessary to loosen screwed As in the illustrative embodiment shown in Fig. 1, the rod (1 is inclosed in the protective tube 12 which is composed for example of silit, pervious to heat, but closed air-tight, and has each end mounted in a closely-fitting sleeve 0 serving simultaneously as conductor for the current. In this modification, however, eac sleeve extends a considerable distance beyond the end of the silit tube 6. Current is sup lied by way 'of the holder d, for exampleb y means of the contact bush 5 on the latter. For protoot-111g the sleeve 0" and simultaneously for closing the radiator as air-tight as possible the protectivecap hf preferably consisting of the same material as the holder d is screwed on the latter. The sleeve 0. has its outer end closed by the plug 71. In order to exclude air still more perfectly from the tube 1) the cap h" may be so formed that a, chamber in it can be filled with liquid or plastic packing j, e. 9. oil or paraflin,

1 described, the combination of a heating-rod,

and a. non-metallic tube of considerably v 1-. In an electric radiator of the character described, the combination of a heating-rod, and a non-metallic tube ofconsiderably greeter diameter than. the thickness of the rod Surrounding the latter, of an electrically-conducting sleeve carrying one end of the rod mounted free to expand axiallynt the end of the tube, and a cap at the end oil-the sleeve for preventing air entering into the tube;

2. In an electric radiator of the character greater diameter than the thickness of the rod surrounding the latter, of a holder fitted air-tight to one end of the tube, an electrically-conducting Sleeve carrying one end of the rod mounted free to expand axially GEORG EGLY. Witnesses:

WOLDEMAR HAUPT,

HENRY HASPER.

Copies of this patent may be obtained for five cents esch, by addressing the Commissioner of Patents,

Washington, D. 0.

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