Grace's Guide

British Industrial History

1862 London Exhibition: Catalogue: Class 7.: John Imray

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1628. IMRAY, JOHN, Bridge Road, Lambeth.

Imray and Copeland's patent steam hammer, with hydraulic anvil and striker.

This hammer is worked by steam pressure, both for raising and dropping it. The valve is of the most simple kind, and the ports are arranged so as to give an elastic cushion at top and bottom, and thereby to save the piston and cylinder from damage, whatever be the force of the stroke, or the clearance between the hammer and anvil.

The hammer is fitted to the end of the piston rod with nn intervening liquid cushion, which, without in the least affecting the intensity of the blow, saves the rod from being upset or otherwise damaged, the concussion being converted into a diffused fluid pressure between the hammer and rod.

The anvil is mounted on the ram of an hydraulic cylinder, fitted with a valve for regulating the ingress or egress of water, so that the anvil with blocks or work on it can be raised or lowered at pleasure; and a forging, with the necessary blocks or tools, occupying greater or less height, can be made to receive the blow at any required level. At the same time the shock is transmitted to the framing and foundation through a liquid cushion, which takes off the whole violence of the concussion, and thereby obviates the necessity for the great strength and solidity which are required for other hammers.

Anvils and strikers, constructed according to the hydraulic system, can be fitted to existing steam power or other hammers.

One of the patent hydraulic steam hammers can be seen in operation daily, at the works, 65, Bridge Road, Lambeth, London, where particulars can be obtained as to dimensions and prices.

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