1.This specification covers dimensional requirements on rope sockets (including swivel sockets) and jars@ also threaded connections for these and other cable-drilling tools (see Fig. 1 for illustration of typical string). It covers also requirements on gaging practice for the connections@ including requirements on the thread gages and recommendation for their care and use. Recommended practices for turning the connection threads are included as an appendix. 2. Nothing contained in this specification is to be construed as granting any right@ by implication or otherwise@ for manufacture@ sale@ or use in connection with any method@ apparatus@ or product covered by letters patent@ nor as insuring anyone against liability for infringement of letters patent.
API STD 3-1955 history
1955API STD 3-1955 Specification for Cable-Drilling tools (Eleventh Edition)