The elements of materia medica and therapeutics . ipe opening into the ends of the retorts. To fa-cilitate the speedy removal of the charcoal, they are sometimes placedobliquely in the furaace : the bones are introduced at the upper end,and the charcoal is removed from the lower end;—while the volatilematters are conveyed away by a side pipe. But these retorts areconsidered inferior to the verdcal ones, on account of the facility andspeed with which the latter can be charged and discharged. Thevertical stills or retorts are made of cast iron or of AYelch bricks;the latter, I am infonned, are p
The elements of materia medica and therapeutics . ipe opening into the ends of the retorts. To fa-cilitate the speedy removal of the charcoal, they are sometimes placedobliquely in the furaace : the bones are introduced at the upper end,and the charcoal is removed from the lower end;—while the volatilematters are conveyed away by a side pipe. But these retorts areconsidered inferior to the verdcal ones, on account of the facility andspeed with which the latter can be charged and discharged. Thevertical stills or retorts are made of cast iron or of AYelch bricks;the latter, I am infonned, are preferable. In a large manufactory ofanimal charcoal in this metropolis, the shape of the retort is that of aright rectangidar prism ; its height being twenty feet, its length aboutthree feet, and its breadth two feet. It is closed at the top by amoveable iron plate, secured by a screw bolt. It is closed belowby a double trapdoor opening underground. Around the retort is afurnace of brickwork, whose shape is tliat of a truncated pyramid. Manufactory of Animal Charcoal and Bone Spirit. a. Furnace enclosing the retort. b. Top of the retort. c. Pipe to convey away the volatile products. d. Water cistern, through which the volatile matter passes. e. Pipe leading to /. The iron receiver (an old steam boiler) com-municating with a resenoir cistern un-derground. g. Second receiver. h. Chimney into which the residual vapourpasses. i. Furnace door. k. Crane. /. Canister to receive the charcoal. m. steps leading to the lower end of the re-tort. See lires Dictionary of Arts and Manufactures, p. 1081, figs. 954 and 955. Lond. 1839. HYDROCHLORATE OF AMMONIA. 319 The bones are introduced at the upper end of the retort (5). Thevolatile products are conveyed away by the iron pipe (c). Afterpassing through the cistern (cl) they are conveyed to a series of receiversIf and ff), where the brown animoniacal liquor {bone spirit) and theempyreumatic oil [animal oil) are deposited. The non-co
Size: 1912px × 1307px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksu, booksubjectmateriamedica
