Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)
Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 163
ulating joint. If the fixture is to be mounted on plaster, a hardwoodblock can be screwed to the wall or ceiling and a crowfootscrewed to this. The screws holding the crowfoot must notextend through the block. Such a case is illustrated at theright in Figure 97. Before the plastering is put on, a… … Figure 98 buildings can best be hung as shown at h, in Figure 98. Thismethod is also used for ceiling fan motors. These motorsm.ust never be rigidly fastened, but should always be left freeto swing and find their own centers. In connection with open or moulding work, the canopiesshould always be…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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