. American telephone practice . FIG. .-PILOT LAMP MOUNTING. make a more luminous signal a larger and better lens is construction of the pilot lamp mounting, as used by the Strom-berg-Carlson Company, is shown in Figs. 368 and 360. which showsthe mounting assembled and in its various parts. The lamp jackitself in this case mounts on the rear face of the wood panel at the 522 AMERICAN TELEPHONE PRACTICE. lower portion of the jack space, while the large brass bushing whichserves to carry the lens screws into the face of the board from thefront. The construction of switchboard cords a
. American telephone practice . FIG. .-PILOT LAMP MOUNTING. make a more luminous signal a larger and better lens is construction of the pilot lamp mounting, as used by the Strom-berg-Carlson Company, is shown in Figs. 368 and 360. which showsthe mounting assembled and in its various parts. The lamp jackitself in this case mounts on the rear face of the wood panel at the 522 AMERICAN TELEPHONE PRACTICE. lower portion of the jack space, while the large brass bushing whichserves to carry the lens screws into the face of the board from thefront. The construction of switchboard cords and plugs has been takenup to some extent in previous chapters, and the practice in this doesnot differ materially as applied to multiple boards from that as ap-. FIG. ^.-DETAILS OF PILOT LAMP MOUNTING. plied to small boards. It, of course, goes without saying, how-ever, that a two-conductor cord will give less trouble than a three-conductor cord, and a two-conductor plug less trouble than a three-conductor plug. Moreover, it is possible to make a stronger two-conductor plug than a three-conductor when the sizes are kept thesame. So far as the consideration of the cords and plugs per se isconcerned the advantages are all in favor of the use of the two con-
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Keywords: ., boo, bookcentury1900, bookdecade1900, bookidamericantelepho00mill
