 The size of the crucible, and the height of the perforated cylinder, are to be so adjusted that the bottom of the crucible shall be struck by the hottest part of the gas flame ; that is to say, the space left between the face of the gas-burner and the...  A Manual of Practical Assaying - Стр. 85авторы: John Mitchell (F.C.S.) - 1868 - Страниц: 697Полный просмотр - Подробнее о книге
 | John Joseph Griffin - 1860 - Страниц: 760
...by figs. 421 and 424, are placed ; and upon them a plumbago crucible of the form shown by fig. 427. The size of the crucible, and the height of the perforated...closelyfitting cover, and pebbles are then filled in between the crucible jacket and the furnace cylinder e, and are covered over the crucible until... | |
 | 1860 - Страниц: 902
...perforated plumbago cylinder and cover, Nos. 5 and 7 are placed ; and upon them a plumbago crucible, No. 10. The size of the crucible, and the height of the perforated...exceed 2| inches. The crucible is provided with a closely fitting cover, and pebbles are then filled in between the crucible jacket and the furnace cylinder,... | |
 | 1860 - Страниц: 690
...perforated plumbago cylinder and cover !Nos. C and 7 are placed; and upon them a plumbago crucible, No. 10. The size of the crucible, and the height of the perforated...gas-burner and the bottom of the crucible must not exceed -z\ inches. The crucible is provided with a closely-fitting cover, and pebbles are then filled in between... | |
 | John Joseph Griffin - 1860 - Страниц: 636
...by figs. 421 and 424, are placed ; and upon them a plumbago crucible of the form shown by fig. 427. The size of the crucible, and the height of the perforated...gas-burner and the bottom of the crucible must not exceed 2i inches. The crucible is provided with a closelyfitting cover, and pebbles are then filled in between... | |
 | John Joseph Griffin - 1860 - Страниц: 766
...be so adjusted that tie bottom of the crucible shall be struct by the hottest part of the gas flam*; that is to say, the space left between the face of the gas-burner and the bettor of the crucible must not exceed 2^ inches. The crucible is provided with a closelyfitting cover,... | |
 | John Mitchell (F.C.S.) - 1868 - Страниц: 802
...is exhibited in section by fig. 41. lu this furnace the parts marked a, b, c, d, e, e, are the Fm. 41. same as those similarly marked in fig. 36 ; but...closely-fitting cover, and pebbles are then filled in between the crucible jacket and the furnace cylinder e, and are covered over the crucible until... | |
 | John Mitchell (F.C.S.) - 1868 - Страниц: 840
...that a plumbago crucible. These are placed together in position in fig. 41. The size of the micible and the height of the perforated cylinder are to be...closely-fitting cover, and pebbles are then filled in between the crucible jacket and the furnace cylinder e, and are covered over the crucible until... | |
 | John Joseph Griffin - 1877 - Страниц: 508
...the flanged crucible, and c the crucible cover. These are placed together in position in Fig. 1118. The size of the crucible and the height of the perforated...is to say, the space left between the face of the gas burner and the bottom of the crucible must not exceed 2J inches. The crucible is provided with... | |
 | Franklin Institute (Philadelphia, Pa.) - 1860 - Страниц: 526
...perforated plumbago cylinder and cover, Nos. 5 and 7 are placed ; and upon them a plumbago crucible, No. 10. The size of the crucible, and the height of the perforated...exceed 2| inches. The crucible is provided with a closely fitting cover, and pebbles are then filled in between the crucible jacket and the furnace cylinder,... | |
 | 1860 - Страниц: 702
...by figs. 421 and 424, are placed ; and upon them a plumbago crucible of the form shown by fig. 427. The size of the crucible and the height of the perforated...crucible shall be struck by the hottest part of the gas fiame; that is to say. the space left between the face of the gas-burner and the bottom of the crucible... | |
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