in an increase of $2,000,000, bringing the total to $5,000,000. 
By this time, the Air Brake had been introduced suc- 
cessfully on practically every mile of railroad in the United 
States and had also won recognition in almest every foreign 
country. The plant on the North Side was no longer 
adequate to handle the increasingly heavy volume of 
business and the company was forced to seek more com- 
modious quarters. In order to get far enough away from 
the center of Pittsburgh, that sufficient room would be 
afforded for proper development, and at the same time to 
realize the advantage of the best transportation facilities, 
a site was selected in the Turtle Creek Valley, 14 miles 
east of Pittsburgh on the main line of the Pennsylvania 
Railroad. The plant was moved accordingly in 1890, 
and the town of Wilmerding was established to provide 
homes for as many of the employees as cared to live in the 
immediate vicinity. 
The Company continued to enjoy a steady growth in 
its new location. In 1898, the capital stock was increased 
to $11,000,000; in 1907, to $14,000,000; in 1912, to $20,000- 
000, and March 15, 1817, to $30,000,000, which is the 
present capitalization. During this period of expansion, 
the Company developed or acquired control of a number 
of other industries, engaged in the railway supply business 
along lines having a natural or supplementary relationship, 
prominent among which are the Union Switch & Signal 
Company of Swissvale; the Locomotive Stoker Company, 
North Side, Pittsburgh; the American Brake Company 
of St. Louis, and the National Brake and Electric Com- 
pany of Milwaukee. Companies are also operated in 
Canada, England, Australia, France, Italy, Germany and 
Russia. The most recent development of the Company 
brought into existence the Westinghouse Union Battery 
Company of Swissvale. 
Although located at Wilmerding for more than thirty 
years, the Westinghouse Air Brake Company has always 
continued to be identified as a Pittsburgh industry and a 
large number of the 6,000 employees engaged at the 
Wilmerding plant reside in the several boroughs adjacent 
to the city on the eastern line, or in the city proper. Sales