more satisfac- same diameter as the bore at the base of the rifles, torily. Broughton’ Oil Cup, are, when the gun is fired, compressed into the Its construction and operation will be readily grooves and thus receives the required rotary motion. We have been shown aletter from the eminent ship-… … working against a pin, rounds were fired, with H, at each end of the mandrel, move it alter- fo the utility and. economy of oil cups and _ lubrica- and partly in deliberate firing; during the latter, nately in - opposite directions, to facilitate the twenty-seven well-directed shots were delivered…
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