US1134886A - Electric stove. - Google Patents

Description

W. F. MERRILL.-

ELECTRIC STOVE.

APPLICATION FILED sum/10,1914.

1,134,886. v Patented Apr. 6,1915.

2 saura-sum z.

l /6 l f Lia-asse."

cierran sirarss rairarrr onirica. l

anticristo atreva.

Specification o .Letters efaeiit.

Application filed July 1914. Serial No. 850,277.

Y To all 107mm. it may concern .otherwise inoperative,-

to provide a. device which the heating elementsaire interchangeable. i

' Another object of the invention is to provide a novcl'heating element provided with a plurality of' removable tablets soA that should any of the wires become broken or ja new coil maybe substituted.

I A further object of the invention isy toprovide a novel means for insulating the Wires from each other to prevent the device from becoming; short eircuited.

lVith these and other obdects in vietv, the

- 'invention consists in the novel combination -vieiv i, Wires, Fig. 4 is' an enlargeddetail sectional and arrangement 01: parts which will be fully set toi-th in the 'following specification and accompanying drawings, in which,

Figure 1 is afpcrspcctive View of a heat! ing element constructed in accordance with i this inventiomliig. 2 is an end view in cle'- vation thereof, lili 8 is a. detail perspective c one of the tablets'- :arrying the view et' a fragih'ent ot the tablet illustrating the method el securing the saine on .the base portiom'and Fig. `is adetail :view of the wiring circuit. v

- Referring now to the drawings by characters of reference, the numeral .l designates the base portionof the device which coni-l prises the plate 2which is preferably of `slate ora similar material. This plate is provided with the inica plates 3, which coverlthe 'Faces of the plate 2 and form an insiilaiing heat-resisting ,cover i therefor. This base' portion 1 is bored at suitable in tervals and a irangcd to receive the opstandingA cylindrical members 4, which are thread-l ed near their lower terminals to receive thenuts5, between which the base portion is clamped. -lhe heating tablets which are best illusratentea Apr. o, 19.15.

tratedl in Fig. 3, are designated generally by the numeral 6, Yand comprise the plate@ ofv slate or similar material, which'is covered with the mica or4 s imiljar'cover 8. Each of these tablets is bored near its ends as at 9 and isarranged to receivefthebolt 10,' which 1'" is held inV place by means othe nut `11.

This bolt is arranged to clamp the plates I 13 `to the tablets 6 to form the electrical Aconnection for the resistance Wire 14:y which is Wound on the plate and connected as illus'- at 15, so that the sanieinay coperatewith trated in. Fig 3. Each of these plates 13v ,is bent` outwardly near its free-terminal as the opposite plate in clamping the postsl `vh'en vthe device is in placer l Secured to the centerrnost post 1 near one of the lateral extremitjicsare the plates 16 which are bent 'upwardly as illustrated in tric circuit.

Referring to the-wiring` diagram it will he apparent that the terminals 16 connect to the central posts on one si de' and-the cen- Fig. 1 and outwardly to form the terminals by which the device is connected to an c lecf trai posts ion the opposite sidel are connected in any suitable manner with the next adjacent post as at 17. The adjacent postson the opposite side'are then connected tothe end posts as at 18, and the' opposite end posts are connected-together as :1t-19, thus completing the circuit rthrough the heating' device when the several coils, designated generally by the niiine'ral 2G, are in place.'

'l'.t will be apparent 'from the vforegoing that in use, the several tablets carrying `the heating coils are set on their respectiveposts v so that the clamps formed by the plates' 13,

trictioiiailj/ engage the posts fl. thereby forming va connection between the -oppositelydisposed posts. The device is. then connected in circuit the terminals 16 andwhen theciirrent is'- thrown' on, the same will pass throiigh the terminals and into the heating coils as shown the coils' willbe'heated through the passing of' the current therethrough, 4and should. anyone become inoperative, 1t may be easily removed and a new one, placed a nd qu i'clil y 4thereon orthe original repaired Withoii'tthe -necessity ot disturbing the remaining coils. While in the foregoing there hasY been shown yand described the preferred embodi-` ment or' this invention, it is to be understood that siieh changes may be made in the through the means of`- in rig. 5. n wai aaa be geen that V corlbintion and arrangement -o- 4parts as 'f f y"-Will fall Witliinith'e Spirit and scope of the` 'inventior'nv as defined in the appendedclaim.

aHaving th's described .my invention', I"

"Claim: v v

` electric heater 'for stoves comprising 21a-'base lplatefsaid base plate-*having .a 'plu-- rality of apertures'in its sides adjacent to' v.its marginal edge, a plurality of conducting g pinseiftending through' sai-d apertures ,andv

' secured. therein, Wire *holding tablets `di s.,

, g posed between said conducting pi'r1`s"vclar1p .ingv'plates' secured centrally at each endfof letsinseriesl-with an electric current,' and'a plurality of heating coils removablysecur'ed y to the tablets and clamping plates.

f n testmon whereof 'I a-iix my signat're 20' n'pr'esence o two Witnesses. l

Witnesses: f 1 D. H. COLEMAN,

'AU'qUsr PRATTE'R.'

WILL E. MERRILL...

said tabletsjjtlieir lfree ends leenttoconforml 4 -to the shapezof the pinand-'clampedthere-" on, means for vconnecting the pin `and .tabfff

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