Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 206
practical use is the Deweyheater, employed both for car heating and for house andoffice heating. It is constructed with an iron case havingopenings above and below for the free circulation of theair, as shown in Fig. 77. This case incloses one or morecoils of wire, made of a composite metal which… … air spaces, on two porcelain insulators, which are notchedto keep the wire in place, and supported on a verticaliron plate in the center of the case, extending from endto end; one insulator resting on the upper edge ofthe plate andthe other on itslower edge; theplate being per-forated withholes for…
Electricity
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