Pratt & Whitney Co. - 1895 Article-Pratt & Whitney Co., Grant's Double-Column Milling Machine

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Manufactured By:
Pratt & Whitney Co.
Hartford, CT

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Title:	1895 Article-Pratt & Whitney Co., Grant's Double-Column Milling Machine
Source:	Modern Mechanism 1895 pgs 509-510
Insert Date:	6/22/2011 12:47:41 PM

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Grant's Double-Column Milling-Machine—Fig. 4 shows Grant's double-column milling machine, as built by the Pratt & Whitney Co. More rigidity than is possible in a single column machine is obtained in this by placing the head-stock and foot-stock on a double column, and fitting the elevating slide between the uprights with provision for clamping it firmly to each when in use. Both vertical and longitudinal adjustments of the table may be varied minutely by aid of graduations in thousandths of an inch conveniently placed.

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1895 Pratt & Whitney Co., Grant's Double-Column Milling Machine

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