. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . a science, which can only be acquired bymuch thought and an extensive experience ;their planes and boring tools, in particular,have acquired a well-deserved and exten-sive fame. There are many points of ex-cellence in the larger tools manufacturedby Mathieson to which we shallhereafter refer in our article MachineTools. Knifinç) Machine, Figs. 3858 to 3860, in-vented by J. F. Stephenson. This designis new, and possesses many advantagesover the mode
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . a science, which can only be acquired bymuch thought and an extensive experience ;their planes and boring tools, in particular,have acquired a well-deserved and exten-sive fame. There are many points of ex-cellence in the larger tools manufacturedby Mathieson to which we shallhereafter refer in our article MachineTools. Knifinç) Machine, Figs. 3858 to 3860, in-vented by J. F. Stephenson. This designis new, and possesses many advantagesover the mode generally in use, namely,chucking on the lathe. One man is ableto set this tool, Fig. 3858, and face twovalve-seats in about an hour, and withoutbreaking the dome-cover joint. Fig. 3858 is a cross-section of a dome cover, with the tool inposition for working. Fig. 3859 is an elevation of the tool itself. Fig. 3860 is a section, showingthe knife for cutting the mitre. A, Fig. 3859, is a plan of nut A. The action is easily explained :. 1836 HANGEE. thus, referring to Fig. 3858, hold the nut A by the stalk and pass it under the bridge of the valve-seat B ; screw the pillar 0 into the nut A, then place the box handle D, which carries the cutter E,which is bored out to receive the spring F, on to C. Screw the nut G, Fig. 3859, to supply the feedto E, then the tool is in perfect order for facing the top of the valve-seat ; when that is completed,change the cutter E, and insert another cutter E, as shown in Figs. 3858 to 3860, to give the propermitre for the valve to rest upon. This tool is valuable in railway establishments, as safety-valveseats frequently require facing. Fig. 3861 is of a hand-power bench drilling machine, by Muir and Co., of Manchester, capableof drilling holes f in. diameter, 3 in. deep, in wrought or cast-iron and steel, up to 1 ft. diameterby hand-power, consisting of independent framing, securely bolted to the foundation, which servesas a table for articles to
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
