Motive Power Development 
Pennsylvania Railroad System 
1831 -I924
 
CHAPTER I
 
THE LOCOMOTIVES OF THE PHILADELPHIA AND COLUMBIA RAILROAD
AND THE EARLY RAILROADS OF NEW JERSEY, AND THE DEVELOPMENT
OF THE PENNSYLVANIA'S MOTIVE POWER UP TO THE YEAR 1868.
HEN. in 1847, the public spirited citizens of Pennsylvania invested in the stock of the then newly organized Pennsylvania Railroad Company, they little realized that they were founding an organization which, during the succeeding three-quarters of a century, would develop into what is generally recognized as the greatest institution of its kind in the world. The present mileage of the Pennsylvania System is 10,519; the total track mileage, including sidings, being 25,292. . There are in service 7,556 locomotives of all classes, and a total of 6,983 passenger train cars and 257,409 freight and work train cars. The total number of passengers carried during 1923 was 151,953,566, equivalent to 5,206,471,435 passengers carried one mile; while the total number of tons of freight hauled was 278,675,494, equivalent to the stupendous total of 53,484,857,000 ton miles. The growth of the System to its present culmination constitutes a most remarkable chapter in the history of land transportation; and this is true, not only from an engineering, but also from a financial and a business point of view. The work of building up the Pennsylvania System has been accomplished on a conservative basis, using sound judgment, but never hesitating to make improvements which would enhance the value and efficiency of the property. The constant effort has been to build for the future, and to anticipate transportation requirements as far as financial conditions and the development of the  art of railroading would permit. As a result of this policy, "the Company has never passed through a receivership, and dividends have been paid with a regularity seldom equalled in any line of industry. The Pennsylvania System stands today as a demonstration of the far-sightedness and sound judgment of the men who have made it what it is. 
     Motive power development on the Pennsylvania has been accomplished along the same general lines as those on which the System has been built. The policy has been conservative in that new types or designs have not been introduced on a large scale until investigation and trial have fully demonstrated their fitness for the service. At the same time, expenditures have been liberal when the advantages of using new designs or more expensive materials have been proved to the satisfaction of the Motive Power. Department. As a result of this policy, there has been developed a Department of Tests at Altoona, which in point of complete equipment and valuable research work accomplished has no equal among the railroads of the United States. Furthermore the results of locomotive tests made on the Altoona plant have been widely published, and railroads the world over have been able to profit by them. 
     The Pennsylvania has adhered strictly to the principle of training its own men and making promotions from within its ranks, with the result that sweeping changes within the organization have been practically unknown. Therefore, especially since the Motive Power Department standardized locomotive designs in 1868, the development of the power has been unusually consistent, and has followed a carefully determined policy. Experimental locomotives have at 
 



 
 
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