THE ELEVATOR EQUIPMENT 



THE elevator plant was installed by the Otis 

 Elevator Company, and is one of the most 

 interesting as well as important adjuncts to 

 the building; interesting because the 40th floor, 548 

 feet above the sidewalk, is reached by one elevator 

 without change of cars, this being the first elevator 

 ever installed for service at such a height; and im- 

 portant because the measure of the plant's success 

 as an ideal of what an elevator plant should be will, 

 to a very great extent, be the measure of the com- 

 mercial success of the building. 



The three buildings which compose the group 

 are equipped with fifteen Otis Traction Elevators, 

 one short rise Electric Drum Type Elevator and three 

 J)in-ct Lift or Plunger Type sidewalk elevators. 

 These are located and arranged to travel as follows: 



in Tower Building: One traction elevator from 

 ground to 40th floor, 548 feet; three traction ele- 

 vators from ground to 35th floor, 480 feet; two trac- 

 tion elevators from basement to 13th floor, 191 feet; 

 two traction elevators from ground to 13th floor, 



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176 feet; one drum type elevator from 35th to 38th 

 floor. 



Original Singer Building: Two traction elevators 

 from ground to 13th floor, 179 feet; one traction ele- 

 vator from basement to roof, 204 feet. 



Bourne Building: Three traction elevators from 

 ground to 13th floor, 181 feet; one traction elevator 

 from basement to roof, 211 feet. 



Each of the passenger elevators, excepting the short 

 rise drum type, has a capacity of 2,500 pounds, at 

 600 feet per minute speed. The cars have an ana 

 of about 35 square feet each, and the highest rise 

 elevator in each group is capable of lifting a maxi 

 mum load of 5,000 pounds at slow speed. The ears 

 for these elevators are equipped with heavy locking 

 devices for holding them immovable at any landing 

 while safe.- are being loaded and unloaded. 



The machines, which are driven by 40 H.P. 240 

 volt direct current motors, are located directly over 

 their respective hoi-t\\av>, thereby giving maximum 

 efficiency and requiring minimum space. 



