US1260257A - Heat-retaining cooker. - Google Patents

Description

F. v. DETWMR.

HEAT RETAINING COOKER. APPLltATlbN HLED FEB.20,.1913.

3 SHEETS-jSHl-IET l.

51, "1f 111'/ 5x J5 1 i i 50 45 Il?"i F. v. DHWILER.y HEAT RETAINING COOKER.

APPLICATIQN FILED FEB. 20. |913.

Patented Mar. 19, 1918.

u I 3 SHEETS-SHEET 2. D

' f77/M Q@ ggf/02965 Z7 F. V. DETWILEH.

HEAT RETAININGCOOKER.

APPLICATION FILED FEB. 20. 1913.

l,260,2757. Patented Mar. 19, 1918.

3 SHEETS-SHEET 3- UnrrEn STATES 'PATENT onirica.

FOREST V. DETWILER, OF CHICAGO, ILLINOIS.

`HEATRETAINING COOKER.

To all whom t may concern:

Be it known that I, FOREST V. DETWILER, a citizen of the United States, residing ,at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in HeatRetaining Cookcrs, of which the following is a specification.

This invention relates to f improvements in heat retaining, or tireless cookers as they l fthe invention is to provide an improved vapparatus of this class which will be of a are sometimes called, and one of the lobjects sanitary construction and from which the coolring chamber or receptacle may be readily removed and vas readily replaced without p dismantling the parts.

To the attainment of theseends and the accomplishment of other new and useful ob a0 "-fcombii'fiation' and arrangement of the several jects as will appear the invention consists in the]v features. Q f-` novelty in the construction,

parts hereinafter more fully described and claimed .-aii c l'-shown in the accompanying drawingsillustra-ting the invention and in which;

`fFfigure l is a perspective view of an improved apparatus of this class' constructed in accordance with the principles of this i-nvention and with parts broken away.

Fig; 2 is a vertical sectional View of one .of .the compartments showing the cooking -chamber or receptacle in section.

' Fig. 3 is a central vertical sectional view 'l of the parts shown in Fig. 1. 355l Fig.' 4 is a vertical transverse sectional -viewftalren on line 4-4 Fig. 1 showing the doors closed and with parts removed and .parts.broken away.

Fig. 5 is a transverse sectional view of the vessel holding rack fory one of the compartments.

Fig. 6 is a sectional detail' view of a portion of the rack. y v

Fig. 7 is a perspective view of the removable tray or pan provided for the purpose of catching any water of condensation which vforms inside of the apparatus.

Referring more particularly to the drawings and in the lpresent exemplification yof this invention the numeral 10 designates generally an inclosing casing which may be of any desiredsize and configuration but is preferably rectangular in cross-section and is supported by suitable legs or supports' 11.

This casing is divided into two compartments, one of which compartments opens Specification of Letters Patent.

Application filed February 20, 1913.

ment registers.

Patented Mar. 19, 1918. seriai No. 749,653.`

size of the opening through the front of the casing and with which opening the compart- This compartment is provided with a lining 17 preferably of metal which forms a top, bottom, rear and side walls, and the forward extremities of the top, bottom and side walls are shaped to form inwardly projecting portions 18 arranged adjacent the opening in the coinpartment.

A frame 19 also constructed of sheet material is arranged within the opening inthe front of the compartment and is'adapted to fill the space between the edge of the lining 18 and the front wall of the casing and also operates to form a jam or abutment for the closure 12. f

vArranged within thecompartment thusY formed is a food-receptacle or chamber 20 preferably constructed of sheet material and provided with an open side. This receptacle or chamber 20 is adapted to be inserted and withdrawn from the compartment and when inserted the portions of the Vreceptacle adjacent the open side will engage and rest against the adjacent faces of the inwardly projecting portions 18, which latter serve to support the front end of the receptacle and to hold it spaced from the walls of the compartment. The open end of the receptacle may be provided with deflected portions 21 which abut the shoulder formed on the outer side of the offset portions 18.

If desired additional supports 22 may be provided for the-` receptacle 20 and these supports 22 are arranged in the space formed between the rear wall of the casing and the rear face of the offset portion 18 on the bottom of the compartment, and are preferably of a height slightly less than the height of the offset portion. These supports 22 preferably eXtend to the rear wall of the compartment and are provided with openings 23 so that they will not interfere Withf sureA 2 6'is preferably insulated and is lo' cated between the closure 12 and theouter edge of the receptacle 20. A suitable fastening device 28 may be provided -for locking the closure 26 When closed.

The receptacle l20 may be provided with handles 29 by means of which it may be -readily Withdrawn or inserted into the compartment and the receptacle is also provided vvith brackets 30 on the interior thereof which brackets serve as support-s for the heating elements 31 or a rack 32 upon which latter a Vessel containing the articles to be cooked may be placed. In order to permit the heated air to pass out of the receptacle 20 and into the'space between the Wall of the apparatus and the Wall of the receptacle, the latter is provided With openings 33. This is particularly advantageous when the heating elements 31 are employed for baking purposes, as the steam Will be forced or driven outvof these openings by the heat from the plates. Without the openings 33, baking or roasting can not be performed, as the articles will not brown on account of the steam or moisture. A tray or pan 33a is removably arranged Within the casing and in such a position that the compartment 2O Will restthereon and is of such a si'ze that the Wall 33h thereof will be adjacent the side and rear walls of the compartment. This tray is provided for the purpose of catching and conning any Water of condensation that may form on the side of the removable receptacle and in the space between the receptacle and the compartment Wall. The tray preferably 'rests upon the supports 22 and is of a thickness so that the front edge of the tray Will not project .above the supporting surface of the portion 18 of the lining 17. If desired the tray may be slightly depressed at its center.

Leading from the compartment to the outside of the casing 10 is a tube or passage 34 Which has communication with a condenser 35 located on the outside of the casing, so that any moisture in the heated air,`Will pass in to the condenser through a tubular member 34 to be condensed. This condenser 35 is provided with a removable section 36 y adapted to be emptied of any Water of condensation, and is also provided With an open upper extremity adapted to be closed f by a closure 37. When this closure 37 is opened the vapor Will pass out of the open v end vof the condenser but When it is closed lining 40 preferably constructed of metal.

The top vof the insulation, that isthe portion adjacent the opening, is cut aWay to form .an enlarged opening, and the top of the casing surrounding thls opening is recessed as shown in Figs. 1 and 3. A sheet metal covering 41 is arranged over the re- 4 cessed portion in thel top of the casing so thatl its edges 42 Will overhang the edges of the adjacent Walls of the recessed portion and this sheet material 41 extends into the enlarged portion of the chamber as at 43 to lform a covering for the adj acentportion of the insulation.v This covering projects over the upper edges of the lining and is offset or deflected to form aniinwardly projecting annular shoulder 44.

Arranged Within the compartment thus formed is a removable receptacle 45 the upperedge of which is shaped tol form a cir'- cumferentiall outwardly projecting flange 46 adapted to rest upon the support or shouldered portion 44. This receptacle 45 is of such a size that when placed Within the compartment formed by the lining 40, it will be supported .by the flange 46 above the. bottom of the compartment While it Will also be spaced from the Wall of the compartment to form an air space therebetween, and around the receptacle. The receptacle 45 Ais also of a size slightly smaller than the opening formed by the shoulder 44, so that While being placed intothe compartment, it Will, as it is forced into the compartment, force almost all of the air out of the compartment through the top thereof, the receptacle 45 together With the flange 46 and the slgpulder-44 coperating With the walls f th partment to form a closed annular space it' 1nd the receptacle,

Ato prevent the transmission of heat.

flange is seated therein, Water of condensa,-A

tion accum/ulating at this point Will form a Water seall for the 'annular space. The closure 13 is pro Iided with an insulated projecting portio 47 adapted to enter the open partment and to project a j end of the c short distance into the receptacle 45 to form a closure for the latter.

The portion 47. is provided With recesses or grooves 47 of any desired depth, opening through the periphery of said' portion in such a manner that they Will be deeper at their extremities adjacent the lower end of the portion and gradually decrease in depth as they extend toward the cover 13, until their ends merge into the periphery of the said portion, and are provided for the purpose of allowing any vapor or steam"l to escape into the space around the portion 17 of the closure, and from the space, into the 4tubular passage-55 leading to the condenser 5G.

Arranged Within .the removable receptacle L15 is a rack comprising spaced uprights48 the upper and lower extremities of which are connected by cross portions 49 secured Any -number of heating elements 53 may be arranged upon the supports i9--52 and the supports 52 are removable for the purpose of accommodating'the rack to vessels of different heights. y

In usethe proper supports are placed in the rack from the open side and the vessels then placed upon the supports, the heating elements 53 being also arranged in position either upon the rack or directly upon the fvessel, or the vessel may be placed-upon one of the heating elements. After the parts are thus assembled the rack may be transported by the handle 54 and placed into the receptacle 45, after which the closure 13 is closed and the heat radiated by the heating elements Will cause the cooking operation to proceed. I

In order to permit the escape of moisture from the receptacle 45 a tubular member 55 is provided which has communication with the interior of the compartment and passes through the Wall of the casing and is connected With a condenser 56 similar in all respects to the condenser 35 on the other side of the apparatus. `When the closure 13 isclosed it enters the recessed portion in the top of the casing so that its upper face will stand flush or substantially flush With the face of the remaining portion of the top of the inclosing casing. With this improved construction it will be manifest that there is provided a casing having a deep Well or receptacle in one end, While in the other end of the casing is ar- Iranged an oven having an opening through the side of thef-lcavsing .l lFurthermore, the cooking receptacles' are not 'only so arranged as to form a space between the outer Walls of the receptacle andthe adjacent walls of the compartment Within which they are located, but these receptacles may be readily removed when desired and as readily replaced and when so replaced and the respective closures closed, the heated air will be confined therein.

Arranged beneath the closure' 12 and in close proximity thereto is a trough 57 which may be of any desired size and configuration, and is provided for the purpose f catching and accumulating any Water of condensation which may form on the exterior surface of theclosure 12. This trough 57 is removably supported in any desired or suitable manner preferably by means of bayonet slots 58 in one of the Walls of the trough,l which slots coperate with pins or lugs'59 on the casing.

While in the present exemplification of' this invention the preferred forms of construction are herein shown and described it is to be understood that various changes may be made in the details of construction and in the arrangement of the several p'arts, f

. Without departing from the-spirit of this invention.

lVhat is claimed as new is l. In an apparatus ofthe class described, the combination of a casing having a heat insulated chamber therein provided with an opening through one Wall of the casing, a closure for such opening, and an open receptacle independent of and arranged 'on being detachably connectedA With the casing beneath the said closure for independent removal therefrom and adapted to receive the water of condensation.

2. In an apparatus of the class described, the combination of a casing having an entrance opening, a food receptacle therein, a

closure for the casing, said closure having a portion projecting therefrom and forming a closure for the receptacle, and avapor outlet formed in the said projecting portion and leading from the receptacle.

' forming an outlet for vapor from the receptacle.

4. In an apparatus of the class described, the combination of an inclosing casing having an entrance opening, a food receptacle therein andinsulated from the Wall thereof,

a closure for the opening in the casing, said the outside of the casing, said receptaclel 30 y cent the opening, and a removable recepclosure having a portion'forming a closure forlthe receptacle, one or more channels formed in the periphery of said portion and forming an outlet for lvapor from the receptacle, the said portion of the'closure being shaped to form a space between the peripherythereof and the casing, and with which space lthe said channels communicate, and an outlet leading from the-space to the outside `of the casing. .I

5. An apparatus of the class described embodying in combination an inclosing casing having an entrance opening providedwith. a support within and projecting from the wall of the casing, said support'being arranged adjacent the opening, and a removable recep'tacle adapted to be placed' tacle adapted to be placed therein, said receptacle having an outwardly projecting flange adjacent its opening adapted, to engage and rest upon the support for suspending the receptacle and holding it out of cony tact with the walls of the casing, and whereby water of condensation will be trapped from entering the said space.A

7. Anapparatus of the class described including in combination an inclosing casing having an entrance opening, a receptacle adapted to be inserted into and removed from the casing through the opening, said receptacle being of a size somewhat less than the casing, means disposed within and supported by the casing wall to project across the space between the receptacle and casing walls and a supporting lip on the receptacle f .adapted to engage and `rest uponvthe said means for supporting the receptacle out of contact with the walls of the casing and.

whereby water of condensation will be trapped from entering the-said space, said lip being spaced some distance from the entrance to the said opening. i

S. An apparatusyof the class described including in combination an inclosing casing,

a receptacle adapted to be inserted into and means for suspending the receptacle out of contact with the walls of the casing, and whereby7 water of condensation will be trapped `from entering said space, the said receptacle operating when inserted into the casing to force a greater portion of the air from the casing. y

-9. An apparatus of theA class kdescribed embodying an outer andan inner receptacle, the latter being of a size somewhat less than the former to 'form a space therebetween, means cooperating with the inner receptacle and entirelyA within the outer receptacle and forming a substantial closure for such space, whereby water of condensation will be trapped 'from entering the said space, the air being forced from the space by the in sertion of the remqvable. receptacle, said closure embodying a flange formed on the inner receptacle adjacent its entrance opening and a support connected with the outer receptacle, said flange adapted to engage and rest upon the said support for suspending the inner receptacle and for 'holding it out of contact with the walls of the outer receptacle.

In testimony whereof I have signed my name to this specilication, in the presence of two subscribing witnesses, on this 17th day of February A. D. 1913.'

FOREST V. DETWILER.

lVitnesses F LoRENoE E. SCHULTZ, FREDERICK V.-JOLE.

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