Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . of steam, the cocks of the pipesft are closed, with the exception of ihe up-permost, so that the vapors pass upwaidthrough the series of ovei-flow-pipes e tothe top retort of the series before beingdischarg;ed into the condenser. The Inw-emiost retort or retorts are provided withdischarge-cocks p. Lockhart and Gracies still (Fig. 3661),in which .4 is a vertical
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . of steam, the cocks of the pipesft are closed, with the exception of ihe up-permost, so that the vapors pass upwaidthrough the series of ovei-flow-pipes e tothe top retort of the series before beingdischarg;ed into the condenser. The Inw-emiost retort or retorts are provided withdischarge-cocks p. Lockhart and Gracies still (Fig. 3661),in which .4 is a vertical and B C horizon-tal sections, has the still a surroundidwith a hot-air space 6; it is heated by aplunility of fire-chambers c c c c, dividedby walls e e e e, from which the productsof combustion pass over bridge-walls tl d d d before entering the chimney e ; -HI ilfrrrrOimiil this is provided with a damper/. The iu- Lamp with ProUcttdterior of the still is provided with a stir- Burner. rer,shown in detail at t; this consists of a ring h carrying arms j i, to the lower part ot which scmpersk k are attached, which tarry sediment or residuumfrom the bottom of the ttill, discharging it into a pipe by which Fig. 3600. / /. Kelley and Tails PHrolnim-Still. it is withdrawn into a reservoir. The arms are rotated by aset of gears Ivt n, the \ast of which meshes with the toothedrinir h. O is a pipe at top of the still into which the lighter vapors otdistillation, naphtha and heniine, pass directly when the valveo is closed, at the heainnins; of the operation, ttowinK down thepipe V and ont thronsh q to the condenser; when the How ofthe lighter products has sensibly diminished, the valve o is PETROLEUM-STILL. 16 to PETROLEUM-STILL. Fig. 3661.
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