US 993178 A
Description (OCR text may contain errors)
Jl D. LAMONT. ELECTRIC GOOKER. APPLICATION FILED mm; 13. 1910.
Patented May 23, 1911.
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miams D. imitant,- cr ian'ritoi'r,v MICHIGAN, -As'sIeNon-or ONE-HALF stmwivt', or )enamore MICHIGAN.
niincritic conne. 1
`Application led June i3, 1910. Serial No. 566,474, f
. i Specicationof Iietteris Patent. l Ptgntgd;M3,y. 23,1911
To all whom it may concern:
inafter more fully. set forth and Be it known that I, JAMES D. LAMONT, a .citizen of the United States,` residing at' .Detroit, in the county of Wayne, State.
o'f Michigan, have invented certain new and useful Iinprovenfients in Electric Cookers;
and I do declare the following to be a full,
clear, and exact description of the'invention, such as will enable others' skilled in the artto which it appertains to make. and
use the same, reference being had to the accompanying drawings, and to the characters of reference ymarked thereon which form a part ofthis speciiication.
This invention relates to an construction and arrangement of parts' hereout particularly in the claims.
The objects ofthe invention are to prol vide a simple and eilicient electric heater or stove and to place said stove in a case or cooking receptacle rendered non-conductive of hea-t wherein the heat generated hy the.
stove maybe' confined within a small area,
provisionbeing made forreadily'detaching .the heater or`stove from the receptacle or -i casing; for connecting and disconnecting viate the possibility of short-circuiting theA through a casing theserVi'Ce or conductorwires thereto; for insulating the electrical 'conductors to obcurrent and to .prevent the contact of moisture with any'of the exposed contacts or electrically conductive parte,
The above objects 'are `attained the structure illustrated inthe accompanying drawings, in vwhich f Figure 1. is a `centralv vertical section cooking-vesselinl place upon'the heaterwi h.
in the casing or receptacle. Fig. 2 is a hori- Zonta-l section as on line2-2 o fEig. 1. Rg.' 3- is an' elevation of the socket plate into which. the ends ofthe conductors of the re-- lsistencecoils extend-to form contact pins.
Fig. e is a sectional view as on line 4-4 of Fig.j3. 5 is a fragmentary view insee- .tion through thegsocket pla-te andneck of theheater, said parts being separated.
The caseor receptacle in which the-heater electric stove. and therinotic cooker, and consists in the' pointed and heater', or'stove made' in accordance with my invention, showing a yother and the space` between them filled with mineral wool 3 orother like/material which is non-conductive lof .heat.
'ro Entsworn VVithin'the central' portionof the-oasev is a cylindrical chamber' Il closed at the. top-by to make a tight closure, the top of thecase y a removable cover 5 whichisiitted into the. outer opening of. said chamber in a manner l proper' being closed by a supplementary.
The stove or heater wherein the heat for cookingfis generated, consists of a hollow circular body portion 7 closed by a remov ablehottorn 8 having feet 9 which elevate the bot-tom of thelheater from thebottom of' the chamber 4. The heater or stove is .preff 'erably cast from suitable'inetal and formed 'integral therewith and projecting later ally therefrom is -a thollow, tapered neck portion 10. Within thehollow .hea-ter' isai suitable resist-ance coil 11. 1- From theterl-f minalsl of the coil 11 extend; the contact pins- `12 and A13, respectively, whichpa through and are embedded'in va filling-of. plastenof Paris or like non-conductivefmaterial 14 contained within the hollow neckl0fof...tlie
heater, the ends of said pins .projecting 4tl'iroiigh the'hollow tenons 10" extending be` portion, as'
yond the terminal of the neck. clearly shown in Figs and'4. I4`orined hrough the wall'of the case and communicating` with the central chambert i material of poor conductivity.v The inner portion of the bushii'ig 15.is tapered to receivethe neck 10 v'of the heater which coi n` ci des therewith and is adapted tovt therein.'
socket plate 1,6.l The tenons 10"o f the necky of the heater extend through the registering apertures 17 in. thebottom of the'socket-plate thereof near the bottom, is 'ano ening which is seated a bushing 15 o f lea or other 16 and said parts are securely-fastened'together by means of a screw 19 which passes through the bottom of the socket plate into a tapped center piece 20of the neck which crosses between and connects the sides thereof. By this arrangement, theneck'of the heater `andthe socket vpla-te l-may be se'- 'curely fastened together in a manner to enable said pa'rtsto be readily disengaged-,L
when desired. :The outer ends ofthe cenv `tact pins'12 and 13 'lie'.'within the socket plate infpfisition rto y'receive the plugs 21j vand duetors in a manner to etlect a short cireniting thereof. it will also he noted that the electrical conductors are so insulated as to prevent :i grounding' of the current on any i'l the metalparts of the case.4
By employing the individual plugs 21 and 22' to connect the service Wires 23 and. 2l- Wit-h the terminal pins ot' tl e resistance coil, any lateral straining of said pins is avoided, thereby obviating the possibility ot' bre/ale ing,` away the insulating material from around said pins and insuring al ways a readyandA easy connection of the service -wires with the terminals oit the resistance coil oit the heater. lty 'will also be observed that by removing' the screw 19 which connects the socket plate With the neck the heater, said heater may be readily removed from thc chamber l ofthe case for the purpose of cleaning it or for making' repairs thereto:4 when necessary. By inclosing` the heater ivithin a chamber Whose Wall is spaced t'rom the outer wall oit 'the case hy a filling' of nonconductive material7 the heat which is ajenerated by the heater is prevented. from radiating` and is retained Within said chamber, enabling the electric current vwhich generates the heat Within the heater to be turned oli after the temperature of said chamber has been raised to the required degree7 the rctained heat completing the operation of cooking the 'food Within the vessel 25 which rests upon the heater Within said chamber? 'Without requiring the consumption ol addi tional current. is the heatcannot escape from the chamber f1tby radiation or conduction, a very high temperature may be retained in said chamber for many hours "titer the heating current has been turned ont, enabling the operation of cooking to be accomplished in a ver ine; pensive mannen Having thus fully set forth my invention,
'what l clairn as new and desire to secure by tietters Patent? is:-
l. A cooking' apparatus having' a central cooking` chamber provided with an opening' in the Wall thereof, a bushing'o't insulating' material fitted into said opening a heater Within said chamber detached theretroin, a resistance coil within said heater having terminal contacts, thc terminal contacts of said coil ii'acsiunj through said bushing; in the Wall oi the chamber and insulated therefrom, and means for detachzibly connectingr the service Wires with the projecting terminals oit said coil.
2. i coole aiii'lmratns comprising; a recepta'le havingv a central cooking t;ii11i'.l, ci, said chamber ha ving a tapered opening in the side thereof, a heater in said chamber. said heater having;` an integral tapered. neel; 'portier proieeting' laterally theretron'i and insertible into said opening` in the side ot said chamber from Within to render the healer removable'trom said chamber`r a resistance coil `within said heater, conductors leading' from the terminals ot said coil and passino; through the necl oil the heater. insiulatinn' material Within the neck ot the heater around said conductors, and means.
for connecting' the service Wires with the terminals of said coil Wholly Within the Wall ot said clmmber.
3. A cooking apparatus, comprising a ease having' a cookingV chamber therein, a hollow burner in said chamber. a resistance coil Within said burner, the Wall of the burner having a laterally extending neck, the Wall ot the case having` an opening' to receive the neck of the burner, a filling oi insulating material Within said neck, conductor terminals trom said coil passing thrmigh and einl'iedded in said tilting' or' insulating material, a socket plate within 'the outer end oi the opening tl'n'onn'h the case receiving the end ot the neck ot the burner, the contactterminals o'l the coil lyin` i vliet plate. and mea ns for detacha i the service Wires with "l terminals v ,in t imony when t, l sign this spcciication in the presence two Witnesses.
J LES l). LA li'lOllT.