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Scientific American, Vol. 87, No. 14 (1902) (1902)

leaf 4

An illustration from Scientific American, Vol. 87, No. 14 (1902), 1902, leaf 4
tached on each side to enable the One usually dependent upon the memory of the clerk, hammer to drive below the bottom of the leaders. of disk, #, are forty-eight in number, one for every is the calling of guests at desired hours. Negligence quarter hour, and the contact finger, C, is so geared In… … by the most modern types, which are designed to com- DIAGRAM OF CONNECTIONS IN THE ELECTRIC CALL bine effectiveness, strength, simplicity and positiveness AUTOMATIC MACHINE FOR CALLING GUESTS IN of action. of pile, hard or soft, straight or crooked, and any pile HOTELS, Some of the chief…

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