Working board for drilling rig

Details Working board for drilling rig Working board for drilling rig

1980-08-07

1982-06-22

Leppink, James A.

Boring or penetrating the earth

With magazine for successively moving unconnected, oriented...

175 85, E21B 1914

Patent

active

043357920

ABSTRACT:
A working board is attached to an oil derrick for a workman to stand upon while racking pipe. The board has arcuate slots with inner floor members and pivoting door covers for use when pipe is not in the slots thereby substantially eliminating the possibility of a workman falling. Pusher arms move the pipe to ready access for making the string.

REFERENCES:
patent: Re30071 (1979-08-01), Hilding et al.
patent: 2576803 (1951-11-01), Moore
patent: 2909288 (1959-10-01), Boudette
patent: 2972388 (1961-02-01), Thornburg
patent: 3145802 (1964-08-01), Woolslayer et al.
patent: 3286777 (1966-11-01), Gyongyosi
patent: 3696944 (1972-10-01), Campbell
patent: 3840128 (1974-10-01), Swoboda et al.
patent: 3965994 (1976-06-01), Hilding
patent: 4061233 (1977-12-01), Benjamin

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