Cable operated apparatus for forming piles

Details Cable operated apparatus for forming piles Cable operated apparatus for forming piles

1974-09-19

1977-01-11

Purser, Ernest R.

Tool driving or impacting

Means to control advance and cyclically reciprocate a...

Relatively elevated guide engaging cable between drive and...

173139, E02D 708

Patent

active

040022110

ABSTRACT:
Method and apparatus for forming piles in the earth with a pile hammer rig having a hoisting drum carried by a crane, driving and braking apparatus for the drum, a drop-weight, a hoisting rope leading from the drum for lifting the drop-weight, apparatus for selectively absorbing kinetic energy of the drum and rope disposed adjacent the drop-weight; apparatus for applying the drum brake prior to impact of the drop-weight; and a fluid swivel system for connecting the drop-weight to the hoisting rope.

REFERENCES:
patent: 559812 (1896-05-01), Ross
patent: 2193293 (1940-03-01), Nichols
patent: 2425018 (1947-08-01), Williams
patent: 2712932 (1955-07-01), Gould
patent: 3749446 (1973-07-01), Doty

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