Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 543
ing of the supervisorylamps in the Stromberg-Carlson switchboard, this being in con-formity with good modern practice. The lamp-jack itself is screwedto the under side of the key shelf, the lamp projecting upwardly from MULTIPLE SWITCH-BOAR-D APPARATUS. 621 a hole bored in the shelf, the cap… … FIG. 367.-SUPERVISOEY LAMP MOUNTING. impact from the plugs, and for that reason a perforated metal shieldis arranged in connection with the brass portion of this cap, as shownin this cut. It has been said that the same type and size of lamp is used forpilot lamps as for line and supervisory lamps,…
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