And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Sunday, February 19, 2023
Saw Blade Sharpening, c. 1915 Mesta Machine Company, West Homestead, Pennsylvania
Lineshaft-Powered Factories originally had a Water Wheel to run them; a Steam Engine usually Replaced them, then, Huge, D.C. Motors at the End of each Shaft. Finally, a lot of these Machines had individual, A.C. Motors put on them. I have a 1921, South Bend 9-Inch Precision Lathe that was Belt-Driven, and I added a Motor and Reduction Pulleys myself. By "Precision", I mean it holds 1/100,000-inch Tolerances with a German-Made Chuck.
Belt powered from a line shaft drive. Much if not most of American manufacturing was powered thusly once up on a time.
ReplyDeletesaw many converted line drives with the shaft long gone and a motor on each machine.
Deletemesta machine was pearl mesta's fortune, IIRC. they made rollers for steel mills.
Pearl Mesta, the "hostess with the mostess." Famous in the lore of Pittsburgh steel industry.
DeleteLineshaft-Powered Factories originally had a Water Wheel to run them; a Steam Engine usually Replaced them, then, Huge, D.C. Motors at the End of each Shaft. Finally, a lot of these Machines had individual, A.C. Motors put on them. I have a 1921, South Bend 9-Inch Precision Lathe that was Belt-Driven, and I added a Motor and Reduction Pulleys myself.
DeleteBy "Precision", I mean it holds 1/100,000-inch Tolerances with a German-Made Chuck.
I am pretty sure that Homestead is a suburb (they call them "neighborhoods") ... of Philadelphia.
ReplyDeleteIs that static lightning on the flat belt? My old professor said those things were static magnets.
ReplyDelete