Chambers's encyclopaedia; a dictionary of universal knowledge . ower of theblow is not known unless the range of fall is , and whether it is single or ilouble acting. The ligure shows the form of the moih^rn simpli-fied steam-hammer. They are often of great size ;80-ton oni« have been nuule, doul)le-iicting, possess-ing therefore enormous jxiwer, ;it Kssen in (ler-maiiy and Creusot in France, a-s well as in theUnited Kingdom; one in Pennsylvania, the largestmade ni> till lt^9l, of 125 tcj^is. Of recent yearspowerful hydraulic have bi^en sulistiluleilfor tliese big ha
Chambers's encyclopaedia; a dictionary of universal knowledge . ower of theblow is not known unless the range of fall is , and whether it is single or ilouble acting. The ligure shows the form of the moih^rn simpli-fied steam-hammer. They are often of great size ;80-ton oni« have been nuule, doul)le-iicting, possess-ing therefore enormous jxiwer, ;it Kssen in (ler-maiiy and Creusot in France, a-s well as in theUnited Kingdom; one in Pennsylvania, the largestmade ni> till lt^9l, of 125 tcj^is. Of recent yearspowerful hydraulic have bi^en sulistiluleilfor tliese big hammers for heavy forging work, butmany engineers still prefer the hammering action. In Coudies hammers, a patent for which out in 184t), the piston is stationary, whilethe cylinder with the tup attiudied to it is themoving piece. Since the expiration of Nasmythspatent great numbers of dillerent types of hammershave been jiut on the market, liut they dillerfrom one another principally only in details, thegeneral arrangement being the same. The modern. Steara-hammer, with Wrought-iron Framing. double acting liammer can nsnally be worked infour ways: (n) as a single-acting one, no steambeing admitted above the piston, the falling weighttherefore alone acting, and again the blow may bemade a dead one or a cushioned an<l ehustic one,the latter etlect being obtained by admitting steamunder the piston before the blow is finished tocushion the piston and cause the tup to relxiundthe instant it has struck: (6) a-s a double-actingliainniei, by using steam?juessure above the pistonduring the fall, giving also either dead or elasticblows. Stcaiii-iiaviKntion. See SiiiPBt Stcam-iiavvy. See Steaiii-pIoiiKli. See Plough. Stoariii. C|H,,(UC|,II;|,i<))3, is one of the fatsoccurring in animals and ])lants. Like the otherfats it may be regarded as an ether of the triatomicalcohol glycerine, all three liydroxyl moleculesbeing re))laced bv radicles of the fatty
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1901
