. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . ces of the centres ofoscillation and gravity, from thesame point or axis. If S, , be the point of suspen-sion of any regular or irregularbody P S ; G the place of thecentre of gravity ; O that ofthe centre of oscillation ; and Rthat of the centre of gyration ;then R S = V SO x SG;hence, S O x S G =r a constantquantity for the same body andthe same plane of vibrationS Q T. If S G = 25, and S O= 36 units of length, thenS E = V25 X 36 = 30. Ira Gays Co
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . ces of the centres ofoscillation and gravity, from thesame point or axis. If S, , be the point of suspen-sion of any regular or irregularbody P S ; G the place of thecentre of gravity ; O that ofthe centre of oscillation ; and Rthat of the centre of gyration ;then R S = V SO x SG;hence, S O x S G =r a constantquantity for the same body andthe same plane of vibrationS Q T. If S G = 25, and S O= 36 units of length, thenS E = V25 X 36 = 30. Ira Gays Conical-Plate Planing Machine.—In this machine the centre of the cuttingcides with the centre of gyration of the revolving cutter-holder. Ira Gay was an GYEATION. 1795 mechanical engineer ; lie was bom in Dunstable, in the county of Hillsborougb, New Hamp-sliire, His machine, Figs. 3431 to 3435, for planing boards, plank, and other articles, is notof a complicated nature. Fig. 3431 is a front view of the machine ; Fig. 3432, a side view ;Fig. 3433, the plane-stock; Fig. 3434, a section through the centre of the plane-stock; and. 3434.
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
