Sandhurst, Phillip T, Mueller, A. M. J · Philadelphia ; and Chicago : P.W. Ziegler · leaf 520
THE GREAT EXHIBITION, 1876. 476 the steam is admitted or allowed to escape varied at pleasure. A guard plate and catch permit this governing lever to be fixed at any point desired. The regulating-valve is hollow through the … STEAM HAMMER, WITH TREADLE. By B. &• S. Mnssey, Manchester, England. centre, being really a double piston opened at both ends, with a number of ports for the steam to enter and escape, arranged all around on the sides, and holding it in perfect equilibrium. The ports open and close very quickly,…
Centennial Exhibition (1876 : Philadelphia, Pa.) · Decorative arts · Arts · Machinery · Arts, Modern
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