sher down upon the work, tral sectional view. The presser plunger, which moves La Nature recently published a description of a ves- vertically in the arm of the machine, is tubular, and and the treadle is operated to punch the hole, the sel found at Pompeii with an internal fire box pro- moving… … cover with two furrows of turning plow. I SKEIE'S RIVETING MACHINE. make my rows 3 feet apart; the hills 18 inches apart in row, which makes 140 hills also tubular, to receive an inner riveting plunger. A across an acre and 70 rows to the acre makes spring plate attached to the upper side of the…
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