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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
B23G5/00—Thread-cutting tools; Die-heads
B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
B23G5/10—Die-heads
B23G5/106—Collet-type die-heads
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FR650514D1928-03-061928-03-06
Improvement provided in the establishment of sectors more particularly applicable to automatic bar turning machines
ExpiredFR650514A
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