The Journal of the Department of Agriculture, Victoria . d resting the collar on the anvil, a blow struck on it tightens it so that it will not slip off in the fireIn welding, the head is struck sufficiently hard to crush the metal and so form a flat surface on oppo-site sides. It is quickly turned at right angles and struck. By this means the square head is roughly formed ; and, at the same time, the weld is partly made. To complete the welding and to obtain correct shape a bolt-tool (Fig. 45) or fork-tool (Fig. 46) is required. When a bolt-tool is used, the bolt* is immediately placed throug
The Journal of the Department of Agriculture, Victoria . d resting the collar on the anvil, a blow struck on it tightens it so that it will not slip off in the fireIn welding, the head is struck sufficiently hard to crush the metal and so form a flat surface on oppo-site sides. It is quickly turned at right angles and struck. By this means the square head is roughly formed ; and, at the same time, the weld is partly made. To complete the welding and to obtain correct shape a bolt-tool (Fig. 45) or fork-tool (Fig. 46) is required. When a bolt-tool is used, the bolt* is immediately placed through the hole and the square hole of the anvil, ^5. method of using a fork-tool and hammered down to the required depth, then removed, and again hammered on the sides. A pair of calipers should be previously set to the width of the head for testing the size. The fork-tool mnv be used for heading various sized bolts, and in that respect is a better tool than the bolt-tool, which can only be used for one size, so that a set of such tools would be _54 Journal of Agriculture. Vicioria. [lo 1912, The swage block has a number of njunil holes in it which may beused in the place of a bolt-tool. The sketch clearly shows the manner in which the fork-tool is great many bolts are made with hexagonal heads; but, as they are moredifficult to forge and the square head is likely to fulfil all the requirementsof the farm, they will not be described. {To be contiuiicd.) VINE DISEASES IN FRANCE. {^Continued from page OjO. Vol. IX.) F. de Castella, Government SPRAYS. Though there is no reason tO fear that copper sprays Avill ever be re-quired in Victoria to combat the various vine fungi which wreak such havocin French \-ineyards, since we are protected from them by climatic condi-tions, other branches of our agriculture are vitblly interested in the ques-tion. Orchardists are only too familiar with the need for copper sprays,and. more recently stil
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectagricul, bookyear1902
