1862 London Exhibition: Catalogue: Class 7.: Glenn and Ross

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1608. GLEN and Ross, Greenhead Engine Works, Glasgow.

Rigby's patent double-acting steam-hammers, 2 cwt. and 5 cwt.

Fig. 1 is a representation of HAMMER FOR FORGING on PUDDLING PURPOSES. They are made from 30 cwt. upwards. From the simplicity of their design and the substantial manner in which these hammers are constructed, they are easily kept in repair. The valve is so arranged that the under side of the hammer piston is never open to the atmosphere, whereby a great saving of steam is effected, especially when a large forging is under the hammer. To raise the hammer-piston, steam is admitted under it in the usual manner; but to accelerate its fall a communication is opened between the under and upper sides of piston. The upper side has an additional area equal to the cross section of piston rod, and the steam operating on this area produces a much sharper blow than can be obtained from the hammer falling by its own gravity only. This, with the height under frames, renders the hammer of great service in deep forging.

Fig. 2 shows a HAMMER FOR HEAVY SMITH-WORK. They are made from 5 cwt. up to 20 cwt. Full pressure of steam is admitted on the upper side of the hammer piston at pleasure, which gives great rapidity and power when required. They are very compact, and accessible to the workman on three sides.

Fig. 3 illustrates HAMMER FOR WORK OF A LIGHTER DESCRIPTION. They are made of 2 and 4 cwt. They differ from figure 2 only in having the anvil block and column cast in one piece.

Price, etc. may be learned by applying to the makers.

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