Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 115
shadows. 104 Johnson [J. F. I., It requires 600 electric lights, or 50 horse-power, to illumi-nate. The illumination is the best of any clock dial in theworld. The turning off and on of these lights is entirely-automatic, and the arrangement, together with some otherparts, is shown in Fig. r6. B A… … Fig. 16.—Illuniinatiug current switch with controller. similar to those used on the dial movements. The pistonoperated by this diaphragm is fastened to the lever z,through the connecting rod which is slotted to give lostmotion, as shown. When air enters the chamber T, itpushes upon the piston,…
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