US Patent: 2,770,992 - Copying Device for Executing Arcuate Cuts in a Plane Passing Through the Axis of Revolution of a Slide Lathe


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


Quick search:	Patent number:	Patent Date:

US Patent: 2,770,992

Copying Device for Executing Arcuate Cuts in a Plane Passing Through the Axis of Revolution of a Slide Lathe

Patentee:

Francois Retornaz (exact or similar names) - Marseille, Bouches-du-Rhône Department, Provence-Alpes-Côte d'Azur France

USPTO Classifications:

82/11, 82/12

Tool Categories:

metalworking machines : metal lathes : metal lathe mechanisms

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Feb. 06, 1952
Granted:	Nov. 20, 1956

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens

Description:

Claims priority application in France, 06 Feb., 1951.

Claims:

My invention has for its object a copying device adapted to execute arcuate cuts in a plane passing through the axis of revolution of a slide lathe for obtaining machined surfaces of various outlines.

According to my invention, it is possible to machine joining or the like surfaces and more particularly spherical surfaces and cylindrical surfaces having a circular generating line, the radii of said spherical surfaces or generating lines being comprised within a wide range.

The execution of such spherical surfaces allows using fiat thrust bearings obtained in mass production in association with rotulas of an accurately calculated radius.