US1220508A - Electric heater. - Google Patents

Description

8.; R. GRIMSHAW & LA MAR R. JONES.

ELECTRIC HEATER.

APPLICATION FILED JULY 27,1916.

Patented Mar. 27, 1917.

u i M m/ ,9 Q mM/ 0 WITNESSES.

ATTORNEYS oi the coils or other parts, and is easily assembled, and when assembled, is held rigidly in position.

lln t we have shown a modified form of the device 1n which, instead of using a plate, such as that shown at 7 in Fig, l, We

make rise of a screen 210. the device the screen serves a triple purpose, or rather-a tour-told purpose, in that it is a common terminal or conductor for the coils 8 and 9, it tends to sore-snout any objects passing into the carburetor, it prevents an eXPlOSIOR or gas which may have accumulated in the pipe between the carbureter and the heatingdewce, in case of short circuit- 'ing anywhere in the heatingdevice, and it ducting members having threaded portions arranged to engage the threaded ends of said insulating casing and beingjprovidcd with openings arranged to receive pipes, means for securing the plpes to saidcon- "ductin members a screen dis osed in one ,I 5 end or said 1nsulat1ngcasmg and-being in electrical contact With one of said threaded conducting and members, a plurality of heat ing coils, one of said coils being disposed centrally of said casing and the others of said coils being disposed in a circular lormation around said central coil, each of said coils having electrical connection With. said screen at one end, an annular conducting member secured to the inner Wall of said casing and having connection With each of said circularly arranged cells, a rigid arm extending inwardly from the interior of said casing and being connected to the other coil, and means for connecting each of said coil supporting arms with a source of current.

2. In an electric air heating device, a czising a perforated member at one end of the casing, said perforated member being of conducting material and being grounded, and a heating coil having connection at one end with said perforated conducting pipe,

and an inwardl extendingconduct U I I in this form of cylindrical casing, a perforated conr .c

enhance having electrical connection n th the end of the coil, said conducting arm secured in the Wall ot the casing at l 1 electrical connection "with a source rent.

3. In an electrical air heating member secured at one end to said can a plurality of heating coils disposed a the'casing, all of said heating coils b connected with said perforated condnc member, a plurality of bindingby said casing, certain or" said coi connected to one of said bindin the remainder being connected binding post. d. in an electric air h i lindrical casing made conducting ends for said c vided with openings arran pipes, means for securing sai ends, a perforated plate car" of said casing, a plurality of sets coils disposed Within the casing, heating coils being connected Witn torated' plate, a plurality of bins o.

carried by said casing, certain oi said cc being connected With one of said bind posts, and other coils being connected another binding post. 7

' 5'. in an electrical air heating device, a cylindrical casing made of insulating mate, rial and being threaded at its ends, conduct-I- ing threaded members arranged to be secured at each end of said casing, said threaded members having openings arranged to receive pipes, means securing the pipes to said conducting members, a pertorated plate carried at one end at said 111- 'sulating casing, a plurality of sets of heating coils, each of said cells having electrical connection with said. plate one end, a plurality of conducting carried by the Wall of the casing and extendin inwardly, certain of said coils being connected with one of said arms, and other coils being connected with the other of the arms, and means for connecting each of said last named arms With a source of current.

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