. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 1844.] THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 367 the die, 6'; C, jointed bar moving on a knee joint at c, and hinge joints at c' and c"; D D, upright standards fixed with bolts at the base df and on the top at d', to side rods or stays, E E; F, cast iron base with a projecting bracket,/, on the underside, and a projection on the Fig. 4. Kg. Fig. 5. top,/', with a wrought iron hoop to securely hold the base of the stem, A; G, open top steam cylinder; g, piston;
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 1844.] THE CIVIL ENGINEER AND ARCHITECT'S JOURNAL. 367 the die, 6'; C, jointed bar moving on a knee joint at c, and hinge joints at c' and c"; D D, upright standards fixed with bolts at the base df and on the top at d', to side rods or stays, E E; F, cast iron base with a projecting bracket,/, on the underside, and a projection on the Fig. 4. Kg. Fig. 5. top,/', with a wrought iron hoop to securely hold the base of the stem, A; G, open top steam cylinder; g, piston; H, piston rod with a moveable joint at h on the piston and at the top, c; J, valre with steam and eduction ports; j, steam pipe; j', eduction port, and j", bandle for a man to regulate the admission of the steam. The article to be rivetted is suspended between the die, 6, and counter-die, a, and in the position the engine in fig. 1, appears the steam has been admitted under the piston and raised it to the top of the cylinder, and pressed the jointed bar, C, into a straight line, and forced the die, 6, upon the rivet. When the steam is cut off, and the underside of the piston opened to the eduction passage, the weight of the machinery, together with the weight of the piston, causes it to descend, and with it the rod, H, and the jointed bar, C, which then takes an angular form like the knee when bent, and draws back the standards, B B, and with them the die, 6; when the steam is again admitted the piston is again raised to the position as shown, and presses upon the rivet as before. REGISTER OF NEW PATENTS. (tTlider this bead we propose giving abstracts of tlie specifications of all the roost im- portant patents as they are enrolled. If any additional information be required as to any patent, the same may be obtained by applying to Mr. LAXTON at the Office of this ^ STEAM BOAT PROPELLERS. H»NRY Davies, of Norbury, Staffordshire, Engineer, for "certain Improve-
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