Electrical news and engineering . er of vast importance. Inthe electrical field rapid progress has been made in the pastFew years in designing new lines of apparatus, redesigningold nes to make the safety feature mor» prominent, andparticular attention has been paid to motor control devicebecause, as a rule, this class of apparatus is handled eitherby unskilled labor or by those not familiar with electricalmachinery, and the necessity for a fool-proof installation isthe more obvious. It is interesting to note how the faceplate rheostat, manufactured by the Westinghouse Electricand Manufacturin
Electrical news and engineering . er of vast importance. Inthe electrical field rapid progress has been made in the pastFew years in designing new lines of apparatus, redesigningold nes to make the safety feature mor» prominent, andparticular attention has been paid to motor control devicebecause, as a rule, this class of apparatus is handled eitherby unskilled labor or by those not familiar with electricalmachinery, and the necessity for a fool-proof installation isthe more obvious. It is interesting to note how the faceplate rheostat, manufactured by the Westinghouse Electricand Manufacturing Company, shown in Fig. 1, is how the enclosing covers are so designed that they canreadily be applied to old rheostats to make old installationsstrictly modern. As shown in the illustrations the enclosing cover is asoild sheet steel box. which fits tightly against the rheostatbase, and is secured by four corner bolts. Pivoted to thecover are two cast iron arms, one with the operating handle Current News and Notes. on the outside, and one within, made with a fork to engagethe rheostat handle. To apply a safety cover to an old rheo-stat it is only necessary to remove the four nuts on the cor-ner studs of the face plate and replace them with adapternuts and studs, furnished with the cover. The rheostat handleis also removed and a fiber tube substituted. The cover isthen put on so that the fork on the inner arm engages theinsulating tube and the four nuts that were on the originalrheostat are used to fasten the cover in place. The leadwires from the rheostat are brought through insulating bush-ings that are held in place by the edge of the cover. Whileno packing is used to make the cover water-tight, it fits soclosely that it effectually prevents the entrance of metalchips, saw dust, or other material that would cause injuryto the rheostat. The cover is grounded through the cornerbolts and being insulated from live parts, renders it fool-pri of and makes it impossi
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidelectricalnewsen28donm
