Engineering reminiscences contributed to "Power" and "American machinist" (1908)
Porter, Charles T. (Charles Talbot), 1826-1910 · New York, J. Wiley · leaf 34
VENTION OF A STONE-DRESSING MACHINE 7 shaft per minute—at which I had determined to run it. This wasmy first employment of high speed. The original model of the machine made 60 strokes per minute.In the machine that broke the stone I had increased the speed to100 strokes per minute. In designing… … My First Mechanical Drawing.Longitudinal Section of my Stone-dressing Machine. had also the opportunity of witnessing the operation of the firstwood-moulding machine, and was much impressed by the speed ofthe rotary cutters and the rapidity with which the work wasturned out. I wanted a motion of 40…
