US606792A - Electric radiator - Google Patents

Description

UN TED STATES PATE T. OF ICE.

FREDE'RICK w. QUIDAS, OF MOUNT wAsnNcroN, MARYLAhll), ASSIGNOR OF ONE-HALF TO EDWARDA. GRIFFITH, or 'BALTIMonn AnrLs-ND.

ELETRIC -RAoA-ToR. I

. SPECIFICATION forgningpart of Letters Patent No. 606,792', dated J' 5, '1898.

Application filed July 22. 1897.; 'Serial No. 645538 (Ne model.)

Tr rllwhom it may concern.-

Be it known that I, FREDERIGK W. QUIDAS, a cit-izen of the United -States, residing at\ ,Mount Washington, in the County of i Balti- 5 more, State of Marylanddave invented a certain new and useful Improvement in Electric Radiato's, of which the following is a-specification, reference being had to the accompanying drawings.

This improvement is designed to produce an elect'ic radia'tor which will give' the maximum of heat with the minimum 'of electric energy To. this end the invention consists in the Construction' hereinafter more particularly described, and then definitely claimedat the endhereof.

In the accompan-ying drawings, Figura lis a vertical 'longitudnal section of a radiatoconstructed according to my iuventioni Eig.

-2 -'is a vertical cross-section of the same. Figs.

'3, 4, 5, 6, 7,-and 8- are vertical cross-sections showing modifications thereof.

`Referring-now to the details of the `drawas'ingshynumerals, and more particularly to Figs land 2; 1 indicates an `ar-tight glass casing 'in-which is seoured in any convenient -waya' heating-wire 2, connected to -terminals 3, passing through', the opposite ende 'of thecasing.,;.. At' theback of the'casing'and inclosed the -ein is shown a reflector 4. Partly surrounding the casing is a non-condnctor of hat, such as asbes'tos, but other material 'may be employed. This will form a hacking 7,*which I preferably make in the term shown in Figs. 2, '3, 6, and 'Leo-that itoverlaps the edges of the inner-casing; but 'I do not limit myself to this form, as `it may'b'e'varied to suit circumstances, and instances of such va- As shown in.Figs. 1 and '2, the "gla'ss case s inone piece; but I do notlimitmyself to' that, as it may be made intwo pieces, as

-shown in Figs. 3, 4, and 5. I r v ln Fig. 3 the back is fol-med of curved 'glass,. and the front is also 'of' curved glass, butof a larger curte. y

In'Figs. 4 and 5 the back of the case. is of 'curved glassand the front flat; but-in Fig. 4

. trogen.

sothe flat gla'ss -ests on a rabbeted-frame,

;which maybe made of anysuitaple material, g

while in Fig. 5 the rabhet to receive the glass is formed integral with' the hack; The backand front whenmade separately should be Secured together with cement of any kind that is notaifected by heat. .If the frame is made separately, that should also be cemented to the back and front.

I propose sometimes to makethe casingof metal, as in Fig. 6in which case it should be' coated, as metal, while it readily co'nducts hoat, does not allow the heat rays to pass, through as readily as does glass, which allows of tetrachloridof latinum tobe very good for this purpose, but ordinary lanpblack will do.

v -In some cases I intend to silver the baek'of the' glass case, as indicated at 6 in Fig. 7,

thus making it a refiecto'r. In'other cases I may set a. sheet-metal reflector atthe back of *the glass, as 'shown in Fig. 8.

Metal, there- 6 5 I prefer to either form a vacuum in the .l

casing or fill it with an inert gas, such as ni .Inlieuof glassor metal for the casing I may sometimes use porcelain or similar ma* terial.

Among the advantages of my invention are the following: The minimum of heat is al)- sorbed at the back, because" the heat usually practically lost there is reflccted forward in -a horizontal direction, as indicated in Fig. '2.

,. I have shown 'several formsof my invention,

but do not limit'mys'elf to such, as it is obvious that many different styles of heater's and ca'sesmay ibe' employed without departing.

from the spirit of 'my inventioni I am aware thatelectric lights have been provided-with reflectors on the outside of the bulbcontaining such lights, and I am also awu'e that incandescent lights are inelosed in a vaenum, and the'efore make no claim to either of these features broadly.

That I claim as new'so 1. Theeombnaton in an eleet-ic heatefi, of a resstance, a casing surrounding the same, a block of poor. heat-conducting materialclosing'the back of the casingnd in contact with it and having a. permen of said material extending 'along the edgesof -the front to hold said casing in the block, sub-` stantially as described.

2. A car-heate' comp'isng a, easing having a pattially-eylindrczlback, a resistan'ce"inclosed in said casing, a reflector in the reat of the resistnce and inside the casiLg, and a block of poor heat-condneting material in which the'casing is partially embedded leaving its front nainly exposed, all substantially as desribed and shown.

In tetimony whereof I afix my signature, in the presence of two witnesses, this 16th day of July; 1897.

FREDERICK \V. QUIDAS.

witnesses:

GEO. MCCAFFRAY, SAAC L. NEWMAN.

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