Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 699
stributing board. These pot-head joints are concealed under afalse floor in that portion of the room. The doing away with the open cable shaft: and substituting there-for the individual iron ducts is a great advantage from the stand-point of fire hazard, and also is advantageous from a… … 677 E% - 1—r SI 8 6 & o o Tar X \ X I I I I \ V V D J ^ ~^\ 1 1 o ^^ o o ir, X 3 o P o o o p^^ o oc 678 CENTRAL OFFICE EQUIPMENTS. 679 thus reducing still more the fire risk. In order to prevent the emptyducts from forming flues in case of fire, all unused ducts are pluggedat both ends. The…
Telephone
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
