. The Street railway journal . FIG. 11.—PUNCH AND SllKAKING MACHINE steam heat inside the oven can be regulatedby means of the steam cocks shown in theengraving. ARMATURE TESTING BY TRANSFORMERSTesting armatures for short circuit bythe use of a small transformer is practicedextensively in Baltimore. Transformersof this kind have been described in otherissues of the paper, but the method fol-lowed in Baltimore is in some respectsmore convenient than in the shops whosepractice has been given before. The in-verted rotary used is of 5-kw capacity, andis shown mounted on the high stand in T

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. The Street railway journal . FIG. 11.—PUNCH AND SllKAKING MACHINE steam heat inside the oven can be regulatedby means of the steam cocks shown in theengraving. ARMATURE TESTING BY TRANSFORMERSTesting armatures for short circuit bythe use of a small transformer is practicedextensively in Baltimore. Transformersof this kind have been described in otherissues of the paper, but the method fol-lowed in Baltimore is in some respectsmore convenient than in the shops whosepractice has been given before. The in-verted rotary used is of 5-kw capacity, andis shown mounted on the high stand in The alternating field for testing mo-tors for short circuit is produced by an oldBaxter motor field, which is mounted in a

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884