US1142769A - Electrically-heated appliance. - Google Patents

Description

A. J. BLOCK.

ELECTRICALLY HEATED APPLIANCE.

APPucATloN HLED AuG.22. 1912.

Patented June 8, 1915.

UNTTED STATES PATENT OFFICE.

ALBERT J. BLOCK, 0F CHICAGO, ILLINOIS. ASSIGNOB TO EL DORADO JONES, 0F CHICAGO, ILLINOIS.

ELECTRICALLY-HEATED APPLIANCE.

Application led August 22, 1912.

2"@ all whom it may concern:

Be it known that I, ALBERT J. Bacoli, a. citizen of. Great Britain, and a resident of Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Electrically-Heated Appliances, of which the following is a specification.

This invention relates to electrically heated household implements, and has for its object to provide simple and eicient structural formation and arrangement' of parts in an yelectrically heated household implement adapting the same for use as a sad or smoothing iron principally, and which is capable of ready utilization as a portable stove, a bread toaster, etc., all as will hereinafter more fully appear.

In the accompanying drawings: Figure 1, is a side elevation illustrating the general arrangement of the present appliance, with an ordinary sad-iron associated therewith. Fig. 2, is a sectional plan view of the same, the sad-iron being removed. Fig. 3, is an inverted plan view of the electric heating unit, with parts broken away to illustrate the internal construction. Fig. 4, is an enlarged longitudinal section on line a Fig. 2. Fig. 5, is an enlarged fragmentary section of the heating unit, il'lstrating the internal construction and 'terminal connections thereof.

Similar reference numerals indicate like parts in the several views.

Referring to the drawings, 1 represents the fiat base or shoe portion of the present appliance of any usual and ordinary configuration and provided with a marginal upturned flange 2 which in the preferred construction as shown in Fig. 4, is formed with internal bearing ledges 3, intermediate the height of 'said Harige, for the attachment and support of the electrical heat- 'ing unit hereinafter described, and which is disposed in the open top cavity formed by the flange 2, aforesaid.

The electrical heating unit of the present improvement 2comprises a detail formation and combination of parts, as follows.

4 is an upper carrying plate of a size corresponding with the bearing ledges 3 above described, and adapted to rest thereon Specification of Letters Patent.

Patented June 8, 1915.

serial No. 716,404.

and be attached thereto by screws-"5,.or other usual attaching means. j

6 are a plurality of knobs or protberances on the upper surface of the plate 4 aforesaid, adapted to support the body of the hereinafter described sad-iron away from extended contact with said plate, and by providing an intervening air space prevent the free passage of heat from the electrical heating unit to said main body of the sad-iron.

7 and 8 are companion sheets or layers of mica or like insulating material disposed on the underside of the aforesaid upper carrying plate 4, and between which sheets or layers a conductor or. lead 9 of the electrical heating element 10 is disposed.

11 is a sheet or` layer of mica or like insulating material disposed beneath the aforesaid sheet or layer 8, and around which the electrical heating element 10, preferably in the form of a narrow band is wound spirally as illustrated in Fig. 3. One end of said element 10, is attached to the conductor or lead 9 above described, and the other end to a companion conductor or lead 12, as shown.

13 is a sheet or layer of mica or like insulating material disposed beneath the aforesaid sheet or layer 11, and its spirally wound heating element 10, to insulate the same from the protecting shield or plate now to be described.

14 is a plate or shield of metal disposed on the underside of the sheet or layer 13 above described.

The sheets 7, 8, 13 and plate 14 are made of smaller dimensions than the upper car.- rying plate 4, while the layer sheet 11 is made of still smaller dimensions, so that the edges of the spirally wound electrical heating element 10 will not be exposed at the sides, as illustrated' more particularly in Fig. -3. Y

15 are a plurality of rivets or like fastening means whereby the above described series of platesand sheets 4, 7, 8, 11, 13 and 14, are permanently secured together as a single heating unit, which when disposed in place '1n the open top cavity of the shoe or base 1 is free from mechanical contactl with any part of said shoe or base except through the before described. connection :ofl

the carrying plate 4 to said shoe or'ibase.

l'is an integrally formed angular bracket at one end of the carrying plate 4 and extending vertically therefrom, with its upper portion formed into a holding sleeve 17, for receiving the end of the usualiexible conductor 18 by which the appliance is connected to an ordinaryfixture or wall socket.- In addition to its function of housingthe end of the flexible conductor 18, the said bracket is adapted for 'use asa foot or rest to=support the device on its end durf ingiperiodsy of temporary non-use.

The electrical ,Wires or leads contamedin the above mentioned flexible conductor 18,

are' connected to,i the 'conductor-sbr leads 9 proper assembled relation and so thatthe combined devices may be handled as a single appliance by the handle of thesad-iron, in

ordinary ironing or smoothingoperation; if 21 are a series of lateral orificesformed',r

in the marginal flange 2vof-thef` baseorshoe ed .for engagement With'prongsoii -the-'upper sired 'to supportthepifesen't ap liance inan inverted@condition. fromfv that own in Fig.

4, of the drawing,.andfin a raised position above the top of a,l table or stand, with avievv to utilize the'applian'ce as a bread,.t0astr, or in a kindred use. Saidoriice's- Zl are also adapted to receive*similarprongsor'a' handle or bail, whenithe appliance ls'tlSed independent of the ordinary sad-iron above combinationof abase member formed TWitl'l an' `upwardly extendinggmarg'mal fiange,

alectricaljheating -element disposed in the lower portion of the cavity-formed by said flange, an engaging means carried by', said ase member, l.and xi/manipulating handle adapted forldetachablecngagementwith the aforesaid engaginggfmeans of; thebe "meuf ber, substantially as set'forth. .2; An 'electricallyheated appliance, comprising a'flat lshoehavng an-uptunied 'mar- Said elastic bailis adapted to ginalfiange forming an open top cavity, an

, electrical heating unit detachably secured in said cavity, and an elastic bail secured to said shoe midway the length thereof and adapted for holding engagement with the body portion of a sad-iron, substantially as set forth.

3. An electrically heated appliance, comprising a flat shoe having an upturned marginal flange forming an open top cavity,

and an electrical heating unit detachably secured in said cavity andhaving a'fiat top member formedwith a plurality of pro' tuberances on its upper surface, substa'n-` tially as set forth. Y

4. An electricallyheated appliance, comprising a flat shoe having an `upturned marginal flange forming an open to cavity, and an electrical heating unit detac ably secured in said cavity and having an integrally formed and `angularly disposed bracket at one end, substantially as set forth.

5. An electrically heated appliance, com prising a flat shoe having an upturned-marginal flange forming an open top cavity, andan electrical-heating unit detachably secured in said cavity, the same comprising an upper carrying plate of metal, a lower protecting plate of metal, a series'of -intrf mediate sheets of insulatingmaterih 'and an electrical heating element disposed-beals ginal flange formingan openl top cavity,

vico' and an' electrical heating unit fdetachably.`

Asecured .in said cavity, the saine comprising anV uppercarrying plate of metal, 'a lower protecting plate of metal, a seriesof inter- ,mediate sheets of insulating 'm'a't'eijial,' land `an electrical heating, element 'disposed between said sheets, thev 'bottom .plat-llhd dimensions than the uppersubstantially as'set forth.,

7. Anlelectrically heated applianicificoming ledge`.in the cavity formedibyaid fseries of intermediate sheets being ofv smaller A jing-Plata? Vflange, saidheating unit comprising an up-l percarryiligl plate of Imetal, .a lower pro-s.

plate` of metal, la' series of. nterfmediate sheetsvof :insulatinggmaterial and an l electric .heating element J dispssed saidfsfietasubstantially as forth.. 8. An electricallyheated appliance, een

prisinga-iat-.shoe hav-ing .an upturned mar-- ginal flange with internal bearing ledges intermediate -its -height, .;andpan elec`` las aan heating mae SupOriedeSnd bearfing.v .ledges inl` the cavity ,-Jformed fby said Iflan ge, .-sai'd heating unit comprising an upcarryingplate of metal, a lower pra- Per tecting plate of metal, a series of inter- Signed at Chicago, Illinois this 17th day medlite sheets1 of insulating material and of August 1912.

an e ectrical eating element disposed between said sheets, the lower plate and series ALBERT J' BLOCK' of intermediate sheets being of smaller Witnesses :V

dimensions than the upper carrying plate, ROBERT BURNS, substantially as set f orth. M. H. HOLMES.

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