Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 155,337
Improvement in drills for drilling metal
Patentee:
James Sargent - Rochester, NY

USPTO Classifications:
81/34

Tool Categories:
woodworking tools : hand drills : eggbeater drills

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
R. F. Osgood
E. B. Scott

Patent Dates:
Applied: Jun. 20, 1874
Granted: Sep. 22, 1874

Patent Pictures:
Sargent 155,337
USPTO pdf tiff
Google Patents
Report data errors or omissions
Description:
A breast drill with 2 gear rings on the main gear. An adjustable shaft allows the speed to be reduced or increased by changing the pinion gears position. The patent drawing seems to show an all metal hand drill with a housing around the gears.

Copyright © 2002-2017 - DATAMP