The Journal of the Department of Agriculture, Victoria . like b (Fig. 43). In drawing outwork of this nature the iron isroughly rounded wdth the hammeriind afterwards swaged smooth andto exact size. Illustrations ofswage and swage block appear::din the September. 1911. issue. The next operation is to flatten?out the central part to about ^ at the middle section andgradually taper it aw^ay to I the edges as illustrated at breadth is allowed to increaseto about 2 in., whilst mitre (c) is made with thefuller and sett-hammer. When this is satisfactorily doneit i
The Journal of the Department of Agriculture, Victoria . like b (Fig. 43). In drawing outwork of this nature the iron isroughly rounded wdth the hammeriind afterwards swaged smooth andto exact size. Illustrations ofswage and swage block appear::din the September. 1911. issue. The next operation is to flatten?out the central part to about ^ at the middle section andgradually taper it aw^ay to I the edges as illustrated at breadth is allowed to increaseto about 2 in., whilst mitre (c) is made with thefuller and sett-hammer. When this is satisfactorily doneit is bent at the centre of theflatjened portion, to fit the swingle-tree, which is usually made semi-circular : then scarf the roundends like a link and weld up. To attach to the wood, drill a small hole through the flat part ; fitting tightly, either put a screw in each side, or bore a hole throughthe wood and drive a piece of iron right through and slightlv rivet the endsto prevent it dropping out. Another method of fastening is to forge the. Cutting- thec. Collar conweliliiis heat. FORGING BOLTS. iidii for collar: b. Partly hent ;?ctl\ .shaped : d. Prejiaring- for the 52 Journal of Agriculture, Victoria. [lo Jan., 1912- mount slightly smaller than the wood ; and, by making the iron red hotand quickly driving on and cooling out before the iron burns too deep,the contraction of the iron will hold it tight, just as a tvre is held on to^a wheel. Forging a Bolt. The majority of bolts are made by machinery ; but, at the same time,blacksmiths are continually being called upon to make them for specialpurposes and where it is not convenient to buy them. Machine made boltsare short, ra;rely exceeding 10 in. long; so that when a longer bolt is re-quired it is either made outright by the smith or else a shorter one islengthened. Screwed ends, , plain circular pieces of iron cut off in9 in. or 10 in. lengths, are screwed at one end, and a nut fitted to themat the bolt factorie
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectagricul, bookyear1902
