was not of neces- tor is full, and starts it to pumping into the accumulator as sity uniform, inasmuch as variation in size or length of rivet, soon as the accumulator weight has descended a short dis- thickness of the iron plates, or size of the holes to be filled, tance. When the valve is open… … riveting machine suspended from an overhead carriage. Fig. 1—PUMP AND ACCUMULATOR. The work, resting on trestles, remains stationary; the ma- Fig. 3._SUSPENDED RIVETING MACHINE—BOTTOM VIEW. chine is moved along it from rivet to rivet to be driven. The chine. The heads of the machine rivets are…
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