. Electric railway journal . Detroit Coil Baking-Oven—Suspended Carrier the coils had to be covered with sheets of %-in. boilerplate perforated with 1%-in. holes at 5%-in. plates rest on 3-in. rails, which separate theboiler-plate floor from the pipe coils. In addition tothe heat provided by the steam coils, air is forced overelectric heaters into the oven at the floor level. By thismeans the oven may be kept at a temperature of from200 to 220 deg. Fahr. and absolutely free from fumesand gases. In order to remove the weight of coils undergoing thebaking process, from the boiler p
. Electric railway journal . Detroit Coil Baking-Oven—Suspended Carrier the coils had to be covered with sheets of %-in. boilerplate perforated with 1%-in. holes at 5%-in. plates rest on 3-in. rails, which separate theboiler-plate floor from the pipe coils. In addition tothe heat provided by the steam coils, air is forced overelectric heaters into the oven at the floor level. By thismeans the oven may be kept at a temperature of from200 to 220 deg. Fahr. and absolutely free from fumesand gases. In order to remove the weight of coils undergoing thebaking process, from the boiler plate floor, ordinaryfloor trucks were abandoned for an overhead system ofsuspended carriers. One of these carriers filled withcoils is shown in one of the accompanying suspended carrier track is formed of a heavy rec-. Carrier for Detroit Baking Oven tangular tubing such as used with extra large slidingdoors. This track is supported on the roof beams in-side of the oven and extends a sufficient distance out-side the oven door to permit the carrier to be loadedand unloaded. As shown in one of the illustrations thesuspended carrier is about 2V2 ft. above the floor and ismade up of % x 3-in. bar iron. The frame is 3 ft. 3 5 ft. over all, and fitted with a pair of semicircularsockets for a 1-in. round rod on which the armaturecoils are hung in the baking process. The field coils areswung from T-shaped hooks riveted to the bottom ofthe frame. Other details of this suspended carrier arealso shown. TESTING TYPE M CONTACTOR COILS WITHOUTREMOVAL BY F. E. CASE, ENGINEER RAILWAY EQUIPMENT GENERALELECTRIC COMPANY If a contactor of type M control fails to pick up prop-erly with the minimum voltage at which it was in-tended to operate, the mechanism may be binding atsome point, or the coil may be partly shor
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
