Die for cutting screw-threads

Details Die for cutting screw-threads Die for cutting screw-threads

1979-07-18

1981-08-11

Goldberg, Howard N.

101205R, B23G 508

Patent

active

042826187

ABSTRACT:
A die for cutting screw-threads, especially for cutting threads into steel for reinforcing concrete and the like with an external thread cutting machine to which the die is operatively connectible by means of a mounting portion having a support surface is disclosed. The die includes a cutting portion having a plurality of cutting teeth arranged in a cutting plane and a guide portion adjacent said cutting portion, which guide portion has a plurality of teeth arranged in a guide plane. The length of the guide portion corresponds to about 3 to 6 times the length of the cutting portion and is approximately 10 to 20 times the length of the cutting plane.

REFERENCES:
patent: 1494464 (1924-05-01), Cressey
patent: 2041027 (1936-05-01), Sintz
patent: 3160038 (1964-12-01), Wood
patent: 3688323 (1972-09-01), Bruck

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