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Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
5/1618.5 5/8.131.51 1/2.174.253 1/23/822 5/8.1621 1/2.19543/1612 5/8.202.51 1/2.236.541/416 5/8.222.751 1/2.27845/1621 3/4.08.09691 3/4.13443/825 3/4.101.251 3/4.1754 1/23/1614 3/4.121.751 3/4.216.54 1/21/418 3/4.162.251 3/4.278.551/420 3/4.2032.154.7553/831 3/4.233.52.186 Lead—pipe Tin′ning. The first attempts in this direction were by Alderson in England, who patented his invention in 1804, which consisted in putting an interior casing of tin pipe within the leaden one. Dobbs, in 1820, gave a coating of resin to the lead pipe, and then placed it in a mold, a core being also placed in the center, or axial position. Tin was then cast upon it and within it, the two becoming perfectly united. It is then ready for drawing or rolling, whichever may be preferred. Warner treats the lead pipe with resin, so as to encourage the junction of the tin, and the pipe is then submerged in a bath of melted tin. The pipe may be bent, and thus drawn continuously through the bat