being pressed down as well as raised up by the steam; and in practice they have been found to act in a highly satisfactory manner, CONDIE'S 6 CWT. STEAM HAMMER, BY A. C. WYLIE, LONDON. Rigby's steam hammers, as constructed by Messrs. Glen & Ross, of Glasgow, and represented in figs. 49 and 50, have obtained a very wide introduction, and have given much satisfaction to those employing them. Fig. 49 represents the form of hammer appropriate for light work, and which differs from the other form only in having the anvil-block, sole-plate, and standards cast in one piece. Hammers on this construction are made of 1, 2, and 3 cwt. The form of hammer represented in fig. 46 is made of RIGBY'S STEAM HAMMER BY GLEN AND Ross, GLASGOW. different weights, from 6 to 30 cwt. The hammer is urged by the steam in its descent as well as by K gravity, and works with great rapidity at a pressure of from 25 to 30 lbs., which pressure should not be exceeded RIGBY'S STEAM HAMMER BY GLEN AND ROSS, GLASGOW. Figs. 47 and 48 are representations of two different |