Drilling Machine

Join Our Community of Science Lovers!


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


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

Scientific American Magazine Vol 8 Issue 7This article was published with the title “Drilling Machine” in Scientific American Magazine Vol. 8 No. 7 (), p. 52
doi:10.1038/scientificamerican10301852-52

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe