Engineering and Contracting . algeometrical lines, and its purposes are sostrongly utilitarian, some concession must bemade to service in the training of a tree. Thechief work in the nursery is to insure onesingle straight leader. There may be stronglateral branches, but there must be one stillmore vigorous central leader. A Machine for Setting Wagon TiresBy Hydraulic Power. (ST.\FF .\RTICLE.) Two different methods are in successful usefor cold setting iron or steel tires on vehiclewheels. In one method (full circle) the tireis pressed onto the wheel perfectly tight, short-enintr it in every p
Engineering and Contracting . algeometrical lines, and its purposes are sostrongly utilitarian, some concession must bemade to service in the training of a tree. Thechief work in the nursery is to insure onesingle straight leader. There may be stronglateral branches, but there must be one stillmore vigorous central leader. A Machine for Setting Wagon TiresBy Hydraulic Power. (ST.\FF .\RTICLE.) Two different methods are in successful usefor cold setting iron or steel tires on vehiclewheels. In one method (full circle) the tireis pressed onto the wheel perfectly tight, short-enintr it in every part of its circumference,while in the other method (edge grip) it isupset or stoved, which shortens il in one placeat a time. Tire setting is merely shorteningtires until they fit wheels tightly, and it reallymakes no difference how it is done so thatthe tire is put on absolutely tight without dam-age to the tire or to the wheel. .A tire maybe put on a wheel by either of the two meth-ods of cold setting or by the ordinary hot. Fig. 1. An Edge Grip Machine for Cold Set-ting Wagon Tires by Hydraulic Power. piocess. and if the work is properly done, itwill stay on as long by one way as , economy in time and expense isusually gained through the use of machinerywdien the amount of work warrants its in-stallation, and this statement applies to theiuse of the tire setting machines. Contractors!having a considerable number of dump wagons,!wheeled scrapers, grading machines, and otherj\ehicles with iron or steel tired wheels, espe-lcially if engaged in work in dry, dusty orl January 28, 1914. Engineering and Contracting 129 sandy localities where tires loosen frequentlyand rapidly, would probably find the use oftire setters to be an economy. The Scientific Tire Setter, shown in Fig. 1,is a machine in which the edge grip principleIS appUed. It is made with two steel headblocks with upward ^ beveled head blocks rest on a cast iron base, andto one of them i
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