International Library of Technology · Scranton, International Textbook Co. · leaf 337
ch is on the upper half only, because the thrust is all in Fig. 3. one direction. This brass presses against the box casting c^which in turn bears up against the spiral springs s, that areheld in a socket in the frame/, as indicated in Fig. 4. Byremoving the piece d^ the frame can be lifted clear… … Fig. 4. ordinary railway cars. To guard the wheels against obstruc-tions, the pilots M^ M, Fig. 1, are bolted securely to theframe at a sufficient height from the track to avoid touch-ing the rails. 7. The w^lieel base, that is, the distance between wheelcenters as measured along the rail, should…
Electrical engineering
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