. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 1 Breakint; No. nf Bore of Thickneaa Length of Weight of u eight in Remarks. Exiieri- ment. PU>i' in of l*\;>e in Pijte in Pipe in lbs. pres- Inches. iuclit/s. inches. lbs. sure per inch. 1 2-812 â 4fi9 20^63 8 75 4-20 Rolled Fine Clay â¢2 â 2-H7 -471 2*37 9 25 380 1. ft 4 2-8- 2-(:8 â¢471 â¢472 22^37 21^ 9--'5 7-75 -.;hO 180 Unpolled Fin'e Clay h 27 â¢4"3 21 â¢Â» 7-89 170 t> *t 6 7 2-9 2/5 â 471 â¢4(W 213 2I^5 7-9 8 12 2011 140 Rol'l'ed Coarse Clay S 2 75 â¢46S
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. 1 Breakint; No. nf Bore of Thickneaa Length of Weight of u eight in Remarks. Exiieri- ment. PU>i' in of l*\;>e in Pijte in Pipe in lbs. pres- Inches. iuclit/s. inches. lbs. sure per inch. 1 2-812 â 4fi9 20^63 8 75 4-20 Rolled Fine Clay â¢2 â 2-H7 -471 2*37 9 25 380 1. ft 4 2-8- 2-(:8 â¢471 â¢472 22^37 21^ 9--'5 7-75 -.;hO 180 Unpolled Fin'e Clay h 27 â¢4"3 21 â¢Â» 7-89 170 t> *t 6 7 2-9 2/5 â 471 â¢4(W 213 2I^5 7-9 8 12 2011 140 Rol'l'ed Coarse Clay S 2 75 â¢46S 22 31 8 25 270 »t >. 10 2 ".') â¢468 â¢6 22^37 21 â¢57 8 25 160 Unrolled Coarse Clay 11 2 75 â¢468 2\-S7 8-5 1-20 ' .) 12 13 2-73 â 475 â f^.lG 21-47 23-12 8-36 110 660 RolVed Fine'ciay 14 2 375 â â¢22 75 1-2-25 360 .1 " 2-»7o â 6311 24-12 12 75 600 II II â SHOT. David , of New York, United States of America, lead manufacturer, for ''certain new and useful improvements in themeanji ofmanufucturing certain articles in ;âGranted .May 29; J;,nrol- red November 29, 1849. The improvements relate to the manufacturing of "drop-shot," which are now formed by allowing molten lead to fall from a great hei-lit the metal at the same time being separated by the pouring- nan into particles, according to the size of the shot to be manufac- tured The falling of the lead through the atmosphere causes the particles to assume a globular form; and in order that such may be pronerlv effected, it is necessary that the height ot the tall shall be such, that the falling lead will acquire a certain velocity through the atmosphere; hence the necessity of erectin^' high towers tor the purpose, which entails great outlay in the manufacture ot shot To obviate this, the inventor proposes employing a height ot about 50 feet, and vet at the same time obtaining an effect fq"al to a fall of
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