Trip hammer (industry)

See also: Trip hammer

In the Industry, a trip hammer is a machine designed to use the hydraulic power with work of Forgeage. It consists of a heavy hammer, which comes to fall on a Enclume or a heap. The hammer is fixed on a pendular lever around a horizontal axis. This hammer is put moving by cams carried by a horizontal tree which comes to support on the loose lead of the lever to each turn of the tree, and lets it fall down while getting clear. The camshaft is pulled by a waterwheel vertical.

Operation is very irregular, also the cams are often inserted on a very heavy driving shaft or between two stealing S. to increase the rate/rhythm of work, the amplitude of clearance of the hammer is decreased by very rigid springs, a beam of wood on oldest (engraving), then metal springs on the more recent models. That makes it possible to increase the number of cams. The speed of the tree is controlled by the variation of the flow of the water fall which makes turn the wheel.

Valley of the forging mills (visit a forging mill of the XIXe century with a trip hammer under operation)

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