Material or article handling – Cylindrical bar handling device – Including ramp and retractable stop or ejector
Patent
1979-08-15
1981-08-18
Spar, Robert J.
Material or article handling
Cylindrical bar handling device
Including ramp and retractable stop or ejector
405154, B23Q 522
Patent
active
042843855
ABSTRACT:
Apparatus for supporting a carriage such as for an automatic welding machine for welding line pipe on a lay barge where the machine is successively lifted from and set upon the pipe. A power cylinder operates extendable legs in accordance with its full stroke and cables connected with an overhead support are also connected to the movable legs and trained over a sheave on the carriage to provide certain lost motion between the extended positions of the legs and their retracted positions so that all of the carriage weight is borne by the legs when extended and all of the weight is borne by the cables when the legs are retracted, thus insuring that the legs clear the pipe irrespective of variations in the distance between the pipe and the overhead support. The sheave is positioned on the carriage to effectively increase the distance by which the carriage is moved by the power cylinder throughout its stroke.
REFERENCES:
patent: 3204417 (1965-09-01), Robley
patent: 3207326 (1965-09-01), Enix
patent: 3588164 (1971-06-01), Wheeler
patent: 4028903 (1977-06-01), Dietrich
patent: 4130204 (1978-12-01), Pickard
Lively Steven A.
Madden Stephen K.
H. C. Price Co.
Noland Kenneth
Spar Robert J.
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