Farrow's military encyclopedia : a dictionary of military knowledge . gearing, and having three doors, so as to employthree operatives; it contains a grate-like basket,which allows the blast from the tuyere to passthrough. At the bottom of the basket is a grate anda comb-raker, operated from the outside. Beneath. the grate is the tuyere box. A fan is provided forcreating a blast. Various devices have been resorted to for trans-mitting power to the fan used on portable the standard Keystone forges have wlial is here shown and known as the Square-Linked Malleabh-Iron Chain, which is v
Farrow's military encyclopedia : a dictionary of military knowledge . gearing, and having three doors, so as to employthree operatives; it contains a grate-like basket,which allows the blast from the tuyere to passthrough. At the bottom of the basket is a grate anda comb-raker, operated from the outside. Beneath. the grate is the tuyere box. A fan is provided forcreating a blast. Various devices have been resorted to for trans-mitting power to the fan used on portable the standard Keystone forges have wlial is here shown and known as the Square-Linked Malleabh-Iron Chain, which is very satisfactory in is more durable than cog gear and more reliablethan fricti(m pulleys. It is positive in its action, andfrom its construction it cannot slip, and may, there-fore, be run slack, with much less friction upon thejournals and bearings. As it neither stretches norcontracts by heat or dampness, it is always the samein all kinds of exposure. To use the chain, place itupon the wheel, with the open hook of the link hook or imhook a link, make an angle, as repre-sented in the drawing, and slide the link out by aside motion : the two depressions on the side of thelink are for this jnirpose. EIVETING-MACHINES.—As manufacturers in theUnited States of Mr. Ralph H. Tweddells vari
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
