US1143579A - Electric heater. - Google Patents

Description

1,143,579. Patented June 15, 1915.

,IZ/W 2,5565.:

UNITED STATES PATENT OFFICE.

HARRY W. DENHARD, 0F SAN FRANCISCO,

cALiFoRNIA, nssIGfNoR fro THE c'UfrLm HAMMER MFG. CO., OF MILWAUKEE. WISCONSIN, A CORPORATION 0F WISCONSIN.

ELECTRIC iiiiafinn;`

Specification of Letters Patent.

Patented June y15, 1915.

Application filed October 31, 1911. Serial No. 657,813;

Another object is to provide an' improved.

heater in which avpluralityy .of heating coils, adapted for different heating purposes,"arev automatically controlled by an object to be l heated.

A further object is to provide an improved curling iron` and grease paint heater.

Other objects and advantages of the invention will hereinafter' appear.

he accompanying drawings illustrate an `embodiment ci' the invention.

In the views of these drawings: Figure l lshows a central section view through a heater. Fig'. 2 shovs a sectional view on line 2 2 of vFig. 1. Fig. 3 shows an end' view of the heater'.lv Fig. 4 shows a diagram of the circuit connections for the same.

For purposes of illust-ration, I have shown a curling-iron heater arranged beneathl a grease paint heater between en d members of suitable frame. A. switch mechanism con` trolling the circuit connections of the same is located on a plate beneath the curling-iron heater and between the end members. In the construction shown the end members and the bottom plate are carried on the side of a base or panel', as shown in Fig. 3, Yso that this panel may be readily attached to any suitable surface, or, if' desired, the device may be portable'and set against any surface without attaching the same. The base 1 is preferably'formed of a suitable insulating material and carries a bot-l tom plate 2 clampedl to it and extending from it at right angles.'V 'This bottom'plate 2 is preferably formed oi insulating material and provided with end members 3,'preteifably formed o? cast metal, which in turn.

may be attached .to the base l. Ina preferred form `the curlingfixui'i heater is constructed substantially inthe. same manner `asniy (io-pending application, Serial No.-

material 6, of any desired type, being woundupon the sheet of insulation and inclosed in a sealedv heat-retaining chamber 7. As in the* previous construction, the door S is arranged to close the openings in one ofthe end members opposite the open end of the sleeve il, and this door is provided with an extension 9 arranged to transmit the movement of the dooi' to the switch mechanism.

The grease paint heater is 'preferably arranged above the curling-iron heater and includes aheating element preferably of a flat type, wherein a resistance materia-l 10 is preferably inclosed between two or more sheets of insulation 11, as illustrated in F ig. l.

The heating unit is preferably located with-V greasediolding chambers 13 is preferably snugly fitted upon the ends of the frameand attached to the saine by means of suitable screws or other devices 14e By the arrange-` ment of the grease paint heater directly beneath the grease pan 12, I am able to provide a heater wherein the heat is directly conducted to this'pan. Further, by the arrangement oii the grease pan upon the top of the device it is very conveniently located, and

. is heated not only by the heat developed by its unit but also that developed by the lieat ing unit for the curlingdron.

The switch mechanism, which is operated upon movement of the door 8, is connected with the extension 9 on the door so that it is operated when the'door is either opened or closed. In a preferred forni, links 15 are attached to the lower end of the extension 9 and are so arranged that when the door is`moved about its pivot 1G a movable contact member 17 on a shaft 18 is thrown about `Contact members 19, 20,21 and 22 are preferably fixed to the 'top surface of the bottom plate 2 by meansl of suitable bolts 24 and are preferably provided with downwardly extending portions 25 which are preferably forced into the .material of the los base to hold the contact members securely in position. rEhe shaft or spindle 18, which carries the movable contact member 17 eirtends through a suitable opening 26 in the bottom .plate and an Aopening of smaller diameter ini a metal plate'27 carried on the upper surface of said bottom plate and attached tothe saine by means of 'screws or other suitable devices 28. lThe upperend ot the shaft 18 is squared as shownv in Fig. 2 so that the contact 17 moves with it. preferred form, a spiral spring Q9 encircles lthe lower end of the spindle i8, having one end fixed in a suitable opening in the plate 27 and the other end fixed in a suitable tap or sleeve-30 carried by the spindle. lt will thus be seen"that when a curling iron or .other object is Iinserted in the heater the door is openedand the switch is actuated af'ainst the bias of serine 29. When the object. is removed the door and the switch are automatically and quickly returned to their normal-position bythe spring.

In Fig. 4 l. have illustrated diagrammatically one form of circuit connections' l tion 'of Vthe switch mechanism is shown in Fig. e with the movable Contact member 17 bridging the contactsQO, 22. ln this position the grease paint heater is in circuit and the curling-iron heater is cut out ot circuit.

When the 'curling-ir0n or other object to be heated is inserted in the heating chamber within the coil 6, the door 8 is opened, throwing-the inovablecontact 17 to break the circuit at the contacts 20, 22 and` to makethe circuit across the contacts .19 and Q1. The curling-iron heater is then iii circuit and the grease; paint heater is cut out. Due to the fact thatthe curling-iron heater consumes a larger amount of energy than the grease paint heater,'suihciei1t heat will be obtained for the operationl ot both heaters when the curling-iron heater is in use, without the necessity of connecting the print heater in circuit. Thus a ver coi .arrangement is provided wh desiring to use the grease pai may do so at any time by throwing a suitable line switchl oi' any desired construction. Wvhen, howeveig'it is desired to use the curling iron heater and at the Sametime use the grease paint heater, the circuit iorthe curling-iron is automatically closed upon insertion of the curling-iron without the necessity of operating any distinct switch, andat the saine time, the grease paint contained. vin

incasso the pans is kept at the proper temperature without reducing the amount of venergy being supplied to the curling iron heater. When the curling iron has been suiiiciently heated, it is Withdrawn i'roin the heater and the circuit oi: the curling iron heater is immediately broken automatically, the spring return Jfor the switch mechanism tendingl to keep the door closed and on its return cutting in the grease vpaint heater. Of course, if the grease paint has reachedthe proper temperature vand it is only desired to use the same for a short time thereafter, vthe line switch 31 may be opened; the residual heat in the device being suiiicient to maintain the greasevpaint at the proper'temperature for a short time.

ln a preferred form a projection or ledge is provided upon the forward edge of the heater casing which may serve asI a receptacle for the curling iron when it is not in use. Further, it desired, the grease pans 10 maybe removable, lso that they will snap into position' upon the top of the frame. It is obvious that other forms of base member than that herein shown may be provi ded and that the base may, if desired, be arranged beneath the bottom plate 2 so that the device may be entirely portable and stand upon the base. y l

.By my'iinproved construction l have provided an improved heater which may 'e made up into a very compact form so that it occupies but little space upon a dressingtable. Further, the'arrangement is such that the grease paint heater is not inthe way ot the person using the curling` iron heater. By my improved method of control, the heating device maybe cut out ot circuit when desired, or the curling iron heater or grease paint heater may be in circuit at different times. Further, while when the larger amount of energy required for the curling iron heater is needed, the grease paint heater is out ouuby my improved arrangement the grease paint is still kept at the proper temperature and. consistency. My improved heater is so constructed and arranged that the parts of the same are eft'ectually insulated from each other so that there is no danger of short-circuiting or overheating, and the device is very safe'in operation. vThe device may further be made such a form that it may readily be .d in a trunk' and carried with the user. desired, the terminals for the device may be connected to an ordinary socket plug so that all that it is necessaryio do is to placev the plug in circuit when it is desired to use the hea ein By the use of the spring pressed switch l am able to provide a switch which 'breaks the circuit quickly and with a miniprovide automatic means of closing theA CIJ ' a heating coil surrounding said chamber,

door and conserving the heat within the device.Y Further, b y my iinproved construclily carried about. Further, the device is of such a simple construction that it may .be readily manufactured at small expense.

While I have -in this application specifically described one form which my invention may assume in practice, I do not Wish to be limited to this specific form, chosen for purposes of illustration, butiwish vto cover Within the scope of this application `all of those forms of my invention falling Within its spirit.

What I claim as new1 and desire by Letters Patent is as follows 1. In an electric heating device, aj plurality of heating coils adapted' to heat a plurality of. objects and means actuated by the placement of an object to be heated yWithin the heating Lone for changing the .current t0 secure ioivl in said coils.

In an electric heating device, a frame having a heatingchamber formed therein, a door .for said chamber, a plurality of heating coils adjacent said chamber ladapted to heat a pluralityof objects, and means actuated upon movement of said door for changing the circuitV connections of said coils.

3. In an electric heating device, a frame .having a heating chamber formed therein, a

heating coil for said chamber', a second heat- ;g' coil carried in said frame, a door forlfsaid'heating chamber, and means actuated upon movement of said door for cutting in the said first mentioned coil and cutting out the said second mentioned heating coil.

i. In an electric heating device, al casing having a' heating clianiber'formed therein,v

a vheating coi-l for said chamber, 4a second heating coil carried by-said casing and.

means actuated' by the insertion of an object 'to be heated in said heating chamber for cutting in the'heating coil for said chamber and cuttingout the other heating coil.

5. In an electric heating device, a casing having a heating chamber formedtherein,

.heating coil for said chamber and changing the circuit connections of the other coil. (3. In :in electric heating device, a frame,

a sleeve forming a heating chamber carried in said frame, a heating coil for said chainber, a pan carried by said frame, a heating coil for said pan and means actuated upon the insertion of an object to -bc heated inl sleeve for cutting inthe heating coil,.-

said u its.

ior the same and changing the circuit connections of the other heating coil. l

7. In an electi'ic heating device, a frame, a sleeve carried thereby. a heating coil wound about said sleeve and insulated therefrom, a pan carriedby said frame ,above said coil, a heating'coil for said pan 'betiveen saidpan and said first mentionedcoil and means actuated upon the insertion ofan object to be heated in said sleeve for supplying the current to its ycoil and cutting oill the current supplied' to the heating .coil for said 'pan'.il v-f l f 8. In an electric heating device, a frame, a hollow heating unit supported therein, means for supporting an object to be heated carried by said frame, asecond heating unit vlocated between said means and said holsoy 9.. In an electric heating device, va frame,

a sleeve carried thereby, a cylindrical heating coil surrounding said sleeve and insulated therefrom, a pan carried by saidl frame above said coil, a second coil between isaid pan and said coil and means actuated upon an insertion of an object to be heated in said sleeve for changing the .circuit connections of said coils.

10. In an electric heating device,-a frame, a heating vunit inclosed ina sealed'chamber therein, a secondV heating unitV carried by said frame and means actuated'by anobject to be heated .by one of said units for changing the circuit connections of said 11.l In an electric heating device, a frame, a heating unit inclosed in a sealed chamber therein,` an object to be. heated carried` by said frame, a second heating unit adjacent said object and means actuated by another object to be heated by one of said units for changing the circuit connections of said units.

12. In an electric heating device, a frame, a heating unit carried thereby and 1nclosedin a sealed chamber, a second unit mounted in said frame, each of said units being arranged to heat diiferent objects and a switch mechanism actuated by a lmovement of an object to be heated by one of said units for changing the circuit connections of one of 13. In an lelectric heating device, a frame,

chamber, a ,second heating unit mounted in 'said frame adjacent said chamber, a support for an object to be heated mounted adjacent said last mentioned unit and means including'. a spring pressed contact member arranged to changey the circuit connections of .a sleeve carried therebj, a heating coil sur- `rounding said sleeve and inclosed'in a-sealed ment oi said closing means.

said Vheating unit upon the I'no'vement-or` an object to be heated by one of said units.

vla. In an electric heating device; a vcasing having a ledge formed thereon, 'a transf versely extending plate connecting they end members of said casing,l a hollow heating unit carried betvvee'n thefend members of said 'casing and inclosed in a sealed chamber, a iiat heating unit carried in said cas-` ingabove said iirst mentionedunit, a pan mounted on said4 casing adjacent said at unit, a door normally closing one of the ends of sai hollow heating unit, 'and 'a switch mechanism actuated upon movement of said door and mounted upon said bottom plate for changing the circuit connections of having an opening therein, a plurality of vheating coils adjacent said opening, means for closing said opening operable upon movement of an'object to be heated, ain oscillating spring-pressed contact member `carried by said frame and movable in a plane parallel with the plane of said heating coils, and means connecting said contact n member and said closing means serving to operate said contact member upon move- 17. in an electric heating a frame mounted thereon, a heating unit extending longitudinally `of said frame and having an opening adapted to rceive' an device, a panel, v

object to be heated, a heating unit carried by said frame 'adjacentsaid first mentioned unit, a pan 'carried by said frame adjacent said unit, *and means operated upon insertion or-reinoval of an object to be heated by said-'istme'ntioned coil I'for changing the'. circuit connections of said coils.

. -182 lIn an electric heating device, araine having end members, 'a heating unit .carried between said end members and communicating with an opening in'one of the salme,"a secondv heating lunit carried by said frame, a

lheating pan carried by 'saidframe adjacent saidv secondv unit, means operable upon movement oi an object to fbe heated 'bysaid first unit for changing vthe circuit connections of said units, and means carried bysaid-frame adaptedto'support said object to bel heated by said iirst mentioned unit -when' 'thel latter is not in use. 'f'.

19. In` an electric heating device, a panel, a frame carried thereon and having endV members spaced apart, an 'insulating base connecting the bottoms of said endmembers, a cylindricalA heating unit carried Vbetween said end members and communicating-With an opening in one of the same, a second heating unit carried between said end meinbers above said first mentioned unit, a grease pan carried by said end members adjacentV said second mentioned unit, and means cariried on said insulating base and operable 7,5

upon movement of an object to be heated by said first mentioned unit -for changing the circuit connections of said units.

Iiiivitness4 whereof, I have hereunto sub" scribed my name in v.the presence of tivo-8D` Witnesses.

HARRY W. DENHARD,l

y Witnesses:

' H. L. ROCKWELL,

GEO. B. JoNns.

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