The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 85
Fig. 2. … Fig.-3. 1S42.J THE CIVIL ENGINEER AxND ARCHITECTS JOURNAL. 73 Q. 1322. What do you mean by self-acting breaks ?—A. When-ever the power is taken off the engine by the engine-driver, it imme-diately ceases to proceed so fast; all the carriages immediately runtowards the engine, with the impetus put…
Architecture · Civil engineering · Science
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