US Patent: 623,140 - Drilling-machine


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 623,140

Drilling-machine

Patentee:

Henry Havelock Cummings (exact or similar names) - Malden, MA

USPTO Classifications:

408/126, 408/133, 451/411, 476/13, 476/33, 476/40

Tool Categories:

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Augusta E. Dean

John C. Edwards

Patent Dates:
Applied:	Jan. 10, 1898
Granted:	Apr. 18, 1899

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Cummings Machine Works

Description:

The inventor would be granted over 120 patents during his lifetime. He established a machine shop in 1881, which in 1905 would incorporate as the Cummings Machine Works "to operate a foundry and machine shop. Henry H. Cummings is president and treasurer and the capital stock is $25,000." (From April 1905 The Foundry, page 101.)

The invention is a drill press that automatically adjusts its speed to the diameter of the drill or cutter. The power downfeed speed is continuously variable under control of the operator. The speed-change mechanism is adapted from the inventor's own patent 529,713.