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Caspar Schumacher
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Publication of GB189805279ApublicationCriticalpatent/GB189805279A/en
5279. Schumacher, C. March 3. Fluid -pressure hammers; forging.-Relates to hydraulic presses, such as forging and shaping presses, and to power hammers, in which fluid pressure is produced by steam or' other pumps supplying the cylinders or rams directly. The press, as shown in Figs. 1 and 2, is made with two or more working cylinders a, a', a<2> between which may be situated lifting-cylinders b, b<1>, and the fluid is supplied under pressure by two or more pumps A, A<1>, A<2>. The latter are connected with the working cylinders by pipes and valves so arranged that either one, two, or all the pumps can be made to supply one, two, or all the press cylinders, thereby affording numerous gradations in the pressure that may be exerted in the press.
GB189805279D1898-03-031898-03-03Improvements in Presses, Power Hammers, and similar Apparatus.
ExpiredGB189805279A
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