ELECTRIC CLOCK SYSTEM 



THE "Magneta" Electric Clock 

 System, manufactured by the 

 Magneta Clock Company, Nos. 120 

 and 122 West Thirty-first Street, New 

 York, the latest and most up-to-date elec- 

 tric time-clock system on the market, 

 has been installed throughout the Singer 

 Building. 



Batteries and contact-points, which 

 have been the cause of much dissatis- 

 faction and trouble in other electric clock 

 systems, in this have been entirely elimi- 

 nated. 



The entire system of secondary clocks 

 throughout the building is actuated by 

 the master-clock shown in the illustration. 

 This is located in an ornamental bronze 

 casing in the main corridor. 



The winding of the master-clock is 

 done by an electric motor, which obtains 

 the necessary current from the electric 

 plant in the building and winds up the 

 weight automatically once every day. 



The weight operates the clock move- 

 ment proper, as well as the current-pro- 

 ducing magneto apparatus. The magneto 

 apparatus is released every half minute, 

 thus generating a positive and strong 

 current, and operating the secondary 

 clocks throughout the building. 



To insure absolute correctness of time, 

 'the master-clock is equipped with a "Re- 

 monitoir" escapement, such as is used on 

 the finest astronomical regulators and 

 tower clocks, where accurate timekeep- 

 ing is desired. It is also equipped with 

 an Invar Steel Pendulum; a pendulum 

 which has given far better results than the mercurial 

 pendulums. 



The secondary clocks are connected in series. 



All wire is heavy rubber covered, and is run through 

 a separate conduit system, thus avoiding interference 

 with other wires. 



[75.] 



