Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 372
n in-sulating frame under the machine may also be coveredwith some insulating waterproof paint or compound. Erection of machine. When placing the parts of amachine in position the following points should be ob-served: (i) Set the lower half of the field in position andplace the armature in its… … s?. 9^3 374 ELEMENTARY ELECTRICITY (2) Clean the contact surfaces of both halves of thefield and file off the burs, if any exist, to secure perfectmagnetic joints at the division of the yoke. (3) Set the upper half of the field in position andsecure it to the lower half by means of the field bolts…
Electricity
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