. The railroad and engineering journal . isadvantage thatis entirely overcome by the slow though powerful com-pression of the hydraulic forging press, which appears The large press cylinder D is fitted and held in the topframe ; the anvil block rests in the bottom frame. Weld-less steel hoops are shrunk on to the cylinder to give addi-tional strength, as clearly shown in section. E is the mainram. It has a strong shank to it, which passes throughthe top of the cylinder, acting as a guide, /is a steamcylinder with piston, the piston-rod of which passesthrough the gland at the bottom of the cyli
. The railroad and engineering journal . isadvantage thatis entirely overcome by the slow though powerful com-pression of the hydraulic forging press, which appears The large press cylinder D is fitted and held in the topframe ; the anvil block rests in the bottom frame. Weld-less steel hoops are shrunk on to the cylinder to give addi-tional strength, as clearly shown in section. E is the mainram. It has a strong shank to it, which passes throughthe top of the cylinder, acting as a guide, /is a steamcylinder with piston, the piston-rod of which passesthrough the gland at the bottom of the cylinder and isattached to the shank of the ram. (? is a cross-headworking in guides, thus preventing the ram from turninground. The force-pumps may be appropriately termed du-plex, the ends of faces of the two plungers HH advancingand receding to and from each other simultaneously ateach stroke. They work into opposite ends of the pumpcylinder /. This cylinder has no bottom, and becomessimply a strong tube. The two plungers are worked by a. HYDRAULIC FORGING PRESS. destined to supersede the steam hammer for the produc-tion of massive steel forgings. The press now brought under notice was designed tobe more or less automatic or self-acting, and to insurethe perfect parallelism both of flat or square masses andof round shafts without being dependent for their truthon the skill of ihe operator. The forging press about to be described has been erectedand in operation some time. It works most satisfactorily,and, on the whole, is found to be a most efficient and usefultool. In this press the force-pump and the large or main cyl-inder of the press are in direct and constant communica-tion. There are no intermediate valves of any kind, norhas the pump any clack-valves, but it simply forces itscylinder full of water direct into the cylinder of the press,and receives the same water, as it were, back again onthe return stroke. Thus, when both cylinders and thepipe connecting them are both fu
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
