. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. chingthe die block, and the one most generally employed, is to forge it solid, with a band to surround theend of the helve. Another class of power hammers consists of those which are operated by means of a crank, theconnection between which and the hammer head consists either of some kind of deflecting spring,or of an air cylinder, and to this class therefore belong all the various forms of pneumatic great advantage possessed by these hammers over the older helve, consists in the fact that theb
. Supplement to Spons dictionary of engineering, civil, mechanical, military, and naval. chingthe die block, and the one most generally employed, is to forge it solid, with a band to surround theend of the helve. Another class of power hammers consists of those which are operated by means of a crank, theconnection between which and the hammer head consists either of some kind of deflecting spring,or of an air cylinder, and to this class therefore belong all the various forms of pneumatic great advantage possessed by these hammers over the older helve, consists in the fact that theblow delivered by the tup always remains parallel to the face of the work, no matter how much tlielatter may vary in thickness; while at the same time, they generally possess some arrangement bymeans of which the power of the blow may be varied, to suit the constantly changing requirementsof the work operated upon. In Fig, 1382 is shown a diagram of an arrangement of crank hammerhaving a curved leaf spring interposed between the crank and hammer, the latter being connected 1382.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
