Claims
- 1. In a tap for threading holes in metal:
- (a) a cylindrical drive section of steel having an ensmalled mount shank at a working end, the drive section and the mount shank having a radial shoulder therebetween, and
- (b) a half-circle tap segment having a half-circle recess on one side to fit the mount shank and a half-circle threaded surface on the other side to form a tap surface, said tap section having a length extending substantially the length of the ensmalled mount shank, said tap segment being brazed on said mount shank with one end against said shoulder.
- 2. A tap as defined in claim 1 in which said mount shank is chamfered at one end to provide chip space in a blind hole.
- 3. A tap as defined in claim 1 in which said mount shank is chamfered and recessed at one end to provide chip space in a blind hole.
Parent Case Info
This application is a continuation-in-part of my copending application, Ser. No. 69,289, filed Aug. 24, 1979, entitled "Semi-Circular Thread Tap", now abandoned.
US Referenced Citations (9)
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
69289 |
Aug 1979 |
|