Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB13565/28A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vereinigte Stahlwerke AG
Original Assignee
Vereinigte Stahlwerke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vereinigte Stahlwerke AGfiledCriticalVereinigte Stahlwerke AG
Publication of GB290631ApublicationCriticalpatent/GB290631A/en
B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
B24B3/18—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of taps or reamers
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Earth Drilling
(AREA)
Harvester Elements
(AREA)
Abstract
290,631. Vereinigte Stahlwerke Akt.- Ges., and Wilberz, J. May 18, 1927, [Convention date]. Milling-cutters; taps. - Milling-cutters or other tools for cutting screw-threads, have successive cutting-teeth ground so as to give first a central cut, Fig. 3, then cuts on opposite flanks of the thread, and finally a cut of the shape of the completed thread.