previous next

Ra′di-al Drill′ing-ma-chine′.

An upright machine, designed for drilling a series of holes without changing the position of the work. In Thorne, De Haren & Co.'s, the arm a carrying the drill and its gearing is rotatable on the collar b surrounding the upper part of the fixed post c, on which are the driving-pulleys. The counter-shaft is at the base, and the belt by which they are driven is changed from the loose to the fast pulley and rice versa by the belt-shifter d. The table e is slotted at top and sides, and can be raised or lowered to suit the work, by a pinion working in the rack f and operated by the crank g.

The drill may be traversed back and forth on the arm a by a rack and pinion, and is provided with automatic changeable feed-gears; or the feed motion may be controlled by the hand-wheel h through a worm on its shaft, which gears with a worm-wheel whose shaft carries a pinion meshing with the feeding-rack i. See also horizontal lathe; boring-machine; drill.

Radial-piston water-wheel.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 United States License.

An XML version of this text is available for download, with the additional restriction that you offer Perseus any modifications you make. Perseus provides credit for all accepted changes, storing new additions in a versioning system.

hide Places (automatically extracted)

View a map of the most frequently mentioned places in this document.

Download Pleiades ancient places geospacial dataset for this text.

hide People (automatically extracted)
Sort people alphabetically, as they appear on the page, by frequency
Click on a person to search for him/her in this document.
Thorne (1)
hide Display Preferences
Greek Display:
Arabic Display:
View by Default:
Browse Bar: