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Oliver Otis Howard, Autobiography of Oliver Otis Howard, major general , United States army : volume 1 5 1 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 2 0 Browse Search
Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 5. (ed. Frank Moore) 1 1 Browse Search
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flame; it is protected by a drop of copal varnish, which soon dries in a thin film, preventing access of decomposing agents. Tin-foil is also employed for the same purpose. Percussion-cap filling-machine. Percussion-cap filling-machine. Percussion-cap holder. Percussion-cap trimmer. Percussion-fuse. In the British service, a composition of 6 parts fulminate of mercury, 6 chlorate of potash and 4 antimony, is used. The machines for making caps display great ingenuity. In Boughton's they are stamped from strips of copper previously cut to proper widths, and then charged with the composition. Wright's machine cuts the blanks from the sheet, forms, and charges them with fulminate at one continuous operation. The varnish is applied by a very simple device to a whole row of caps arranged in holes in a board. Percussion-caps of paper, fitting on the hammer, were formerly used for cannon, but have been superseded by quill-tubes and friction-primers. Separate caps for