C. W. Coe, of Ashtabula, Ashtabula Co., Ohio, is about to take a patent for a new drill. There are two improvements in this invention. The'first has reference to the feeding motion, and also to the mode of raising the drill from the work. The nut which works the feeding screw has On it a pinion capable of sliding up and down, but causing the nut to revolve by means of a groove and feather. This pinion gears into the driving wheel when at the upper part of the nut, a rapid motion is then given to the screw, which draws the drill quickly upwards. But when it is desired to give the feeding motion the pinion is depressed by a lever, and thus released trom the teeth of the driving wheel. The pinion is then moved by two lugs or dogs attached to the inner part of the driving wheel; now, if the driving wheel has a motion given to it the reverse way to that used when raising the drill, it is evident a slow feeding motion will be given to the screw. If desirable, of course, more than the two lugs can be used. The second part of the invention embraces a mode of holding the work to be drilled in any oblique direction. A clutch is employed for this purpose of a hollow conical shape, with a screw on the outside, this clutch is cut open in a vertical direction, so that if the Work be placed within, it can be compressed by a taper nut working in the outside screw. A spring is used to open the clutch, when the nut is relaxed, and as it is attached by arms to the bed of the machine, this clutch can be set to any angle. The bed of the machine is movable so that the work can be shifted horizontally
This article was originally published with the title "Drilling Machine"