Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Movable relative to tool along tool-axis
Patent
1982-12-30
1985-10-08
Weidenfeld, Gil
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Movable relative to tool along tool-axis
408 72R, 408 86, 408136, 408137, B23B 4506
Patent
active
045457077
ABSTRACT:
A set screw pocket drilling device for drilling blind holes in a pipe surface at a pipe joint for set screws holding the joint together including an externally threaded sleeve sized to fit the set screw hole and engage the surface of a pipe within a retainer in which the set screw hole is drilled, a drill fitting through and rotatable relative to the sleeve, and apparatus for rotating the drill relative to the sleeve. One embodiment of the device includes only a sleeve and a drill fitting through the sleeve having an outward end extending from the outward end of the sleeve for engagement of a wrench to rotate the drill and the sleeve. Another form of the device has a sleeve provided with a head having locking lugs, a drill extendable through the sleeve and having a head provided with a locking flange, and a clamping bracket for securing the sleeve head with the drill head at a position at which the cutting end of the drill is extended beyond the sleeve end so that a set screw pocket is drilled as the sleeve is screwed into a set screw hole of a pipe joint retainer. A third form of the device includes an externally threaded sleeve having a rotatable head and a drill provided with a cam coacting with the head to advance the drill as the head and cam are turned by means of a cam handle.
REFERENCES:
patent: 1033419 (1912-07-01), King
patent: 1384116 (1921-07-01), Blair
patent: 2309765 (1943-02-01), Haase
patent: 2501000 (1950-03-01), Murphey
patent: 3726549 (1973-04-01), Bradley, Jr.
Bradley, Jr. Earl C.
vander Linden John
Bradley Earl C.
Garland H. Mathews
Howell Daniel W.
Weidenfeld Gil
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