Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1982-09-02
1984-10-02
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5721, B25B 1700
Patent
active
044740883
ABSTRACT:
Tongs are provided for screwing together or unscrewing sucker rods for deep oil wells. A slotted ring gear is placed into a slotted annular housing plate and driven by conventional means. Heads on cage plates are moved by cam on the internal surface of the slotted ring gear. Relative movement between the cage plates carrying the head and the ring gear is governed by the position of a reversible ratchet stop which includes a beveled pin. The beveled pin is mounted in a hole through one of the cage plates and works on a slot in the ring plate. When the bevel is faced in one direction, it permits rotation of the ring gear to the cage plates in that direction, but holds the ring gear and cage plates in the matched position rotation in the other direction. The matched position is when the cams are in a neutral or withdrawn position and when the slots are aligned. The tongs are set either for making up the sucker rod or breaking it apart depending upon whether the alignment pin is set with the bevel in one direction or the opposite direction.
REFERENCES:
patent: 858894 (1907-07-01), Moss
patent: 3086413 (1963-04-01), Mason
patent: 3180186 (1965-04-01), Catland
patent: 3875826 (1975-04-01), Dreyfuss et al.
patent: 4273010 (1981-06-01), Farr et al.
Coffee Wendell
Jones Jr. James L.
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