A textbook on the locomotive and the air brake (1901)
International Correspondence Schools · Scranton, Pa., International textbook co · leaf 261
ge ports allowedthe brake-cylinder pressure to reduce so rapidly that the valvewas not sufficiently effective on heavy grades. Fig. 14 shows the improved retaining valve, which differsfrom that shown in Fig. 13 in that its plug cock 6 is always heldon its seat by the spring 8. Also, the weighted…
Locomotives · Locomotive boilers · Railroad cars
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