Steam hammer

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A powerful machine hammer consisting of a steam cylinder mounted between guides, a piston, a piston rod with a heavy ram at its lower end, and an anvil at the base of the supporting frame. Steam is admitted to the cylinder by suitable valve mechanism and raises the piston in all cases, while in some it gives an added impulse to the natural fall of the ram. Sixty to eighty blows per minute can be delivered by this apparatus.

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