Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . ich is connected with the treadle, and which may be pivoted at any elevation. On this the ham-mer rests in the beginning, and when the workman presses down the treadle he pulls back this latch,and at the same time through the rod D separates the rolls. The hammer then falls. The instantthe blow is delivered, the operator removes his foot from the treadle, the drop-rod then falls, andthe eccentric sleeve turning the front roll, aided by the pull of the belt, is forced against the board,
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . ich is connected with the treadle, and which may be pivoted at any elevation. On this the ham-mer rests in the beginning, and when the workman presses down the treadle he pulls back this latch,and at the same time through the rod D separates the rolls. The hammer then falls. The instantthe blow is delivered, the operator removes his foot from the treadle, the drop-rod then falls, andthe eccentric sleeve turning the front roll, aided by the pull of the belt, is forced against the board,raising the hammer up again. If it be desired to give a series of heavy blows, the latch is thrownback, and the hammer is allowed to rise until it strikes a projection on the drop-rod. It thus liftsthe latter, causes a separation of the rolls, and falls. By this arrangement the hammer may bemade to follow the motion of the foot, and blows of any degree of lightness or shortness may begiven. The Hoichkiss & Stiles Drop-Hammer.—The working portions of this hammer are represented in 86 HAMMERS, ^ ^ £^& 2272
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
