Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1981-08-31
1983-06-21
Combs, Ervin M.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
10 86A, 10141R, 408218, B23G 116, B23G 506, B21D 5324
Patent
active
043891454
ABSTRACT:
An internally threaded fastener, such as a nut, includes a body having an axially extending opening with a side wall. A coarse internal thread convolution is formed in the side wall of the nut body. A fine thread convolution is also formed in the side wall of the nut body. The turns of the coincident coarse and fine thread convolutions are intermingled to enable them to engage a fastener having either a coarse or a fine external thread. An improved tap has a first section for forming the fine thread convolution and a second section for forming the coarse thread convolution. The two sections of the tap are interconnected in a coaxial relationship by a connector section having an axial extent which is less than the axial extent of the coincident coarse and fine thread convolutions. When a plurality of nuts are to be tapped, the fine thread convolution is tapped first. This enables a leading nut to be moved away from a following nut during tapping of a coarse thread convolution in the leading nut and the tapping of a coarse thread convolution in the following nut.
REFERENCES:
patent: 662064 (1900-11-01), Ehmke
patent: 1210508 (1917-01-01), Marye
patent: 1447056 (1923-02-01), Bates
patent: 1946860 (1934-02-01), Kielland
patent: 2204754 (1940-06-01), Frame
patent: 2347910 (1944-05-01), Johnson
patent: 2383231 (1945-08-01), Anderton
patent: 2473752 (1949-06-01), Johnson
patent: 3205756 (1965-09-01), Ollis, Jr. et al.
patent: 3266363 (1966-08-01), Bronson et al.
patent: 3405751 (1968-10-01), Parr
Combs Ervin M.
Russell Burdsall & Ward Corporation
LandOfFree
Method of tapping dual thread fasteners does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of tapping dual thread fasteners, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of tapping dual thread fasteners will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2108581