. Bulletin. Science. power driven. They were 30 and 48 inches in diam- eter, respectively. The largest was grooved to a waffle-like surface on its convex face. These grooves were about % inch wide and Y^ inch deep. This pattern was ground by placing the tool face up on a wheeled buggy, which rode on cambered oak rails. As it was pushed along the length of the rail the grinding wheel on the radius arm cut one groove. When the groove had been cut, the radius arm was moved 2 inches along a line shaft and another groove cut. ^Vhen all the grooves had been cut in one direction the tool was turned 9
. Bulletin. Science. power driven. They were 30 and 48 inches in diam- eter, respectively. The largest was grooved to a waffle-like surface on its convex face. These grooves were about % inch wide and Y^ inch deep. This pattern was ground by placing the tool face up on a wheeled buggy, which rode on cambered oak rails. As it was pushed along the length of the rail the grinding wheel on the radius arm cut one groove. When the groove had been cut, the radius arm was moved 2 inches along a line shaft and another groove cut. ^Vhen all the grooves had been cut in one direction the tool was turned 90 degrees on the buggy and the other set of grooves was ground. The grinding of this tool took many weeks, and making the tools and apparatus for Peate may have kept Hodge busy for nearly six ; 0)|«p. o nnnnDDnt DDDnnDnnDDnni nnnnnanDDDnDn) DDDDDnnnnnnnnni annnnnnDDnannni pDnDnnnnnnnnnDDi DDnDnnnnnnnnnnni DnDDnnnDDDDDnn! DnnDnnnDDnnnnni nnnnDDnnnnnni DDDDnnDannna nnnnnnnnnn[ nDDDnni The history of Peate's 62-inch mirror probably would have remained as obscure as that of his others except for the furor which arose over casting the disc. The Erie Conference made no attempt to publicize this project, and both Hodge Manufacturing and Standard Plate Glass accepted Dr. Peate's contracts as somewhat unusual but hardly newsworthy jobs. But when the glass trade became aware of Standard's intention to cast this disc, a mighty outcry arose. Instead of encouraging Standard to complete this novel task the National Glass Budget, one of the leading trade journals, reviled them as "bumpkins" for at- tempting something that even the great glassmakers of Europe would not do. It is hard to imagine why the trade journal so strenuously objected to Standard's attempt. It has been suggested that it derived from the fact that Standard Plate Glass just previous to that time had refused to join in a combination of Pittsburgh com- panies which had set up a glass trust.'" Or it
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Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience
