Livro - Biringuccio - 09-1002-0

10 PIROTECHNIA
page, page,
1540 Edition this Edition
32. The bell foundry, showing a reverberatory &ace,
the method of laying out a bell, and the lathe for
turning a bell core. 98 270
33. The bell scale. 98v 271
34. Two methods of ringing bells. 99v 274
35. Four types of bearings for hanging large bells. ggv
36. Additional ways of hanging bells. IOO
274
275
37. Furnace for welding cracked bells. IOOV 276
38. The layout of the hearth and firebox of a reverberatory
furnace for melting bronze. 102 283
39. Plan of a reverberatory furnace with two fireboxes. 103v 286
40. Reverberatory furnaces with oval hearths. I03V 286
41. A reverberatory furnace with a round hearth. 104 287
42. General view of a reverberatory furnace for melting
bronze. 104 287
43. Melting in the basket and in the hearth, both arranged
for bottom tap mg.
105 289
44. Melting in the la i e, with bellows. IO~V 290
45. Arrangement for meltin in crucibles, with blast. 106 292
46. .Wind furnaces for me f ring in crucibles by natural I
draft. 106v 293
47. The operation of bellows by cams on a shaft driven by
an overshot water wheel. 110 301
48. Operation of bellows with crank and crossbar. 110 301
49. Operation of bellows with crank and counterweighted
crossbar. IIOV 302
50. Bellows arranged for operation by hand. IIOV 302
5 I. Treadle-operated bellows. 111 304
52. Bellows arranged for direct operation by a man's
weight. 111 304
53. Operation of bellows with a rocking bar. IIIV 305
54. Operation of bellows by a rack and partly toothed
wheel. \ IIIV 305
55. Machine for boring guns. 113v 309
56. Machine with two boring tools, one of which is driven
by gears. 1 I4 310
57. Boring bars with three different types of cutting heads. 114v 311
58. Wooden axle for a gun carriage. 115 314
59. Green-sand mould and core for casting a small bell. 1201, 328
60. Metal distilling bells and their furnaces. 126 342
61. Cucurbits, alembics, and receivers arranged in the furnace
for distillation. 126 343