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Proceedings of the Engineers' Club of Philadelphia, 1904, Vol. 21 (Classic Reprint)

Proceedings of the Engineers' Club of Philadelphia, 1904, Vol. 21 (Classic Reprint)

          
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About the Book

Excerpt from Proceedings of the Engineers' Club of Philadelphia, 1904, Vol. 21

The greatest problems which confronted us were the brake system and proporticming the weight upon the pony wheels. Discouragement followed discouragement; the pressure was the same on the large and small wheels, and, as a consequence, the small wheels had a disposition to lock and slide, long before the car could be brought to a standstill. This was decidedly objectionable because of the small wheels rapidly becoming flat in places, and because of the racking and the jolting of the truck while the wheels were skid ding. Derailments continued through a long series of experi ments. At length differential levers were devised which divided the pressure on the small and large wheels in proportion to the weight resting on them. This was entirely successful. A pair of coil springs were placed on the side frames close to the large yokes through which were. Spring posts which carried the side bearings. This brought the weight-between the center of the truck and the driving wheels, making the proportion on the pony wheels about 25 per cent. A spring com pression post directly back of the pony wheels' axle increased the load upon them on curves bv means of a V plate attached under the car. The frame was mounted on journal springs.

About the Publisher

Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com

This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


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Product Details
  • ISBN-13: 9781397236517
  • Publisher: Forgotten Books
  • Publisher Imprint: Forgotten Books
  • ISBN-10: 1397236515
  • Publisher Date: 19 Dec 2018


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