Cutting by use of rotating axially moving tool – Tool or tool-support with torque-applying ratchet – Reversible ratchet
Patent
1987-05-05
1988-06-21
Weidenfeld, Gil
Cutting by use of rotating axially moving tool
Tool or tool-support with torque-applying ratchet
Reversible ratchet
408239R, 10111, 10123R, 403326, 403377, B23B 4512, B23G 130
Patent
active
047521635
ABSTRACT:
A thread cutting diestock assembly is disclosed comprising a ratchet housing having a bore adapted to selectively and detachably receive a large thread cutting die head or an adaptor ring, each of which is provided with ratchet teeth engaged by a pawl on the ratchet housing so as to be rotatably therewith. The adaptor ring has a polygonal bore adapted to detachably receive a small thread cutting die head which interengages with the polygonal bore to preclude relative rotation between the die head and adaptor ring. A circumferentially extending recess in the bore in the ratchet housing carriers a non-circular split retaining spring ring which interengages with the large die head or adaptor ring to detachably secure the latter in the ratchet housing bore, and a circumferentially extending groove in the adaptor ring bore carries a polygonal split retaining spring ring which interengages with the smaller die head to detachably secure the latter in the adaptor ring bore.
REFERENCES:
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patent: 4575048 (1986-03-01), Bregman et al.
Emerson Electric Co.
Howell Daniel W.
Weidenfeld Gil
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