mall downwardly turned cut- ine in the manufacture of various grades of dynamite, over the firebox and under the boiler, and is arranged ting edges. To operate the device, it is inverted and giant powders, etc., have led to the introduction of the held with one hand, and the cap rotated backward… … the stem escapes, insuring the best results and FURNACE. a perfect, clear, and loud tone. The bell can Although only one furnace is shown, any number of be raised and lowered to suit the steam pressure by has been adopted at the Giant Powder Works, Hopat- ireboxes may be arranged side by side in…
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