. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 436 THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. [November, CURTIS'S PATENT RAILWAY IMPROVEMENTS. Hydrostatic Jack. The machinery or apparatus consists of a machine to place or re- place an engine or carriage upon the rail; this nAchine is an adap- tation of the hyilraulic press for the purpose of a lifting jack. Figure 1 is a side view, one half is shown in section. Figure 2 a plan partly shown in section, and Figure 3 an end view partly sho%vn in section; similar letters refe
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 436 THE CIVIL ENGINEER AND ARCHITECTS JOURNAL. [November, CURTIS'S PATENT RAILWAY IMPROVEMENTS. Hydrostatic Jack. The machinery or apparatus consists of a machine to place or re- place an engine or carriage upon the rail; this nAchine is an adap- tation of the hyilraulic press for the purpose of a lifting jack. Figure 1 is a side view, one half is shown in section. Figure 2 a plan partly shown in section, and Figure 3 an end view partly sho%vn in section; similar letters refer to similar parts of the machine in each figure, and the description refers to each figure so far as the parts are shown in each. A, is the end rail of the framing of an engine or carriage which may be required to be placed upon the rails. B, two cylinders or tubes of. wrought iron or other metal, furnished with stuffing boxes and leathers in the manner usually employed in hydraulic presses; rams or ijistons C, C, work in these tubes in the usual way, and the upper ends of the rams are provided with notched ends or otherwise as may be found convenient. E is a force pump fixed horizontally upon the plank L, e is a metal block in which the channels are formed for the channels valves, and adjusting screws, the general arrangement of wdiich valves and screws is the same as in the hydraulic press, but I form it in this manner, in order to avoid the use of connecting pipes and the usual fittings, which would be very liable to be broken or deranged. F is the plunger of the force pump E, worked by the bell-cranked lever G. H, a cistern to hold water to supply the pump, which is introduced into the pump thro\igh the lying valve, which is kept in its place by a spring in the usual manner; when the pump is set to work, the water lifts the vertical valves d, d, and passing through channels clearly shown in Figures 1 and 2 in sec- tion, enters the cylinders or tubes B, B, and thus raises t
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