Side View Of the Screw Propeller.
{"newspaper_name": "The New York herald.", "edition": "01", "page": "p1", "byline": ""}
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The above is side view Of the propeller. The
main drum is lS feet diameter and drives four chains
weighing tons. The screw shaft drum is feet da.
meter, and the weight, with the pull when working is
equal TO 50 tons the bearings of the main shaft