Patent GB-191014708-A (GB)
Title: Improvements in Machine for Boring, Drilling, Tapping and Milling.
Inventor: FORRESTER HAROLD JOSEPH CHARLE
IPC: B23Q5/12
Filed: 1910-06-18
Granted: 1911-06-08
Abstract: 14,708. Forrester, H. J. C., [Ingle Machine Co.]. June 18. Boring-bar machines; milling-machines; tapping.-A machine of the type shown in Fig. 1 is provided with outboard bearing and graduated spindle feeds for boring, with sensitive spindle feeds for drilling, with graduated power traverses of saddle and column for milling, and with a reversing - drive for tapping. In addition, all parts have a rapid power drive for adjusting and a hand feed for final locating purposes. The saddle 158 carrying the outboard bearing is manually adjustable, and the column is traversable on the bed 155 by means of concentric hand-wheels 159. The bed 155 is adjustable by rack and pinion on the work bed towards and from the machine spindle. A platform for the operator is provided at the base of the column 3. The drive is obtained from an electric motor 2 through a splined shaft 1 and bevelreversing gear clutch controlled at 21. The spindle is driven through change-speed gearing of the type employing a swinging frame with a traversable idler controlled by mechanism at 49 and through further gearing clutch-controlled at 43. The spindle 270 is mounted in end bearings of the adjustable split cone type and passes with clearance through the splined driving-sleeve and the feed-nut, the spindle itself being threaded and the feed-nut normally rotating at the same speed as the spindle. The spindle driving-sleeve and feed-nut are connected through sun-and-planet differential gearing, and the planet-wheel carrier may be driven directly or through back-gearing clutch-controlled at 92 from a shaft carrying a handwheel 110. In addition, a milled nut in front of the hand-wheel controls a friction clutch to obtain power drive from a nest of gearing of the sliding spring-spline type controlled at 86. This nest is driven through reversing-gearing of the rocking idler frame type controlled by a handle (not shown), by the side of the handwheel 110. A central position of the handle provides for disengagement of the reversing- gearing which is driven through internal gearing from the shaft which is geared to the spindle-driving sleeve in the power train. A quick drive for the feed-nut is obtained by gearing from the driven shaft of the bevel reversing- gear, through a shaft which may be moved axially at 146 to clutch it, in one extreme position, to this gearing and to mesh a pair of wheels to drive the shaft of the hand wheel 110. In the other extreme position the shaft is driven from the nest of gears on the handwheel shaft, and in the central position it is entirely out of driving or driven relation except by means of a helical wheel which is splined to this shaft and drives or is driven by a wheel splined to the boss of a hand wheel 117. The wheel 117 may be moved axially to clutch it to the hand-wheel 121, and thus through worm and rack-and-pinion gearing traverse the saddle 24, or to clutch it to a sleeve and thus through worm gearing drive the shaft 115 for rack-andpinion traverse of the column at 116. In a central position the hand wheel 117 is inoperative.