NATUEAL HISTOEY BUILDING 77 



located in the south pavilion, the other in the north pavilion, thus 

 furnishing service at the two main entrances. The southern elevators 

 run from the ground story to the fourth story, and their machinery is 

 placed at the top of the hatchways in the attic of the pavilion, but the 

 northern run only to the third story and their machinery is contained 

 in a pit below the level of the ground floor. The machines are of the 

 tandem worm and gear type with motors of about 25 horse power 

 each. The southern cars measure 4 feet 10 inches by 7 feet 6 inches, 

 the northern G feet by 6 feet 6 inches. All have a live load capacity of 

 2,500 pounds at a speed of 250 feet a minute, and a maximum capacity 

 of 3,000 pounds at 200 feet a minute. The doors to the southern 

 elevators are separated by a narrow wall space, but at the northern 

 entrance the cast-iron grille work extends continuously across both 

 elevators on all floors. 



The freight elevators are placed one on each side of the building 

 at the southern end of the ranges where they adjoin the east and west 

 wings. They travel from the ground story to the attic and in the 

 lower story are near the two large entrances to the building at which 

 freight is received. The inside dimensions of the two cars, which 

 are identical in all respects, are 7 feet 3 inches by 11 feet 4 inches by 

 12 feet high, and their lifting capacity is 6,000 pounds at 70 feet a 

 minute, with an overload capacity of 12,000 pounds at slow speed. 

 The machines, which are of the same size and type as those connected 

 with the passenger elevators, are contained in separate glazed enclos- 

 ures located on the ground floor in the adjacent part of the wings. 

 The gates at the openings on all floors except the attic are of a 

 simple folding pattern in pairs, running on a top tubular track and a 

 sill track at the bottom, and are so installed that the gates, after fold- 

 ing, may be swung far enough to the sides to uncover the entire width 

 of the car, and the overhead track removed. 



TOILET ROOMS, LAVATORIES, ETC. 



The toilet rooms are all located in the ground story and third 

 story. The public rooms occupy two bays, or a length of approxi- 

 mately 36 feet, on each side of the north wing in the gTound story 

 adjoining the north entrance lobby, and in the same story there are 

 also two rooms for men employees, one each in the east and west wing. 

 The third story contains two general rooms in the north Aving and 

 two small toilets connected with offices. 



In their construction and appointments these rooms comply with 

 the most exacting i>lumbing and hygienic requirements. All of the 

 main toilets, with one exception, consist of two rooms each, the ante- 

 rooms for women being fitted up as rest rooms. Of the ground story 

 rooms for men employees one has an anteroom furnished with 



