. Scientific American Volume 86 Number 13 (March 1902). 42 - &*-j ?/??$?. DETAILS OF DUMMY SHELL AND COMPRESSED AIRATTACHMENTS AT BREECH OF 8-INCH GUN. trations. Compressed air was selected as the sub-stitute for powder most suited to the case. This wasfurnished by an electrically-driven, direct-connectedcompressor with an automatic governor. The air isstored in a series of flasks and in the large 6-inch mainwhich runs around the building below the galleries, ata pressure of 130 pounds to the square inch. The com-pressor runs until the desired pressure is reached,when the governor cuts off the
. Scientific American Volume 86 Number 13 (March 1902). 42 - &*-j ?/??$?. DETAILS OF DUMMY SHELL AND COMPRESSED AIRATTACHMENTS AT BREECH OF 8-INCH GUN. trations. Compressed air was selected as the sub-stitute for powder most suited to the case. This wasfurnished by an electrically-driven, direct-connectedcompressor with an automatic governor. The air isstored in a series of flasks and in the large 6-inch mainwhich runs around the building below the galleries, ata pressure of 130 pounds to the square inch. The com-pressor runs until the desired pressure is reached,when the governor cuts off the current. When the gunis fired the resulting drop of pressure, acting throughthe governor, starts the compressor and renews thesupply of air. The compressed air is led into the powder chamberthrough the breech-block in the manner shown in ourillustration. The mushroom head and the spindlewere removed from the breech-block and a 2-inch pipethreaded at its ends was introduced in place of thespindle, and an air-tight connection made by screwingup a pair of flanges tightly
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Keywords: ., boo, bookcentury1900, bookdecade1900, booksubjecttbe, bookyear1902
