Tool driving or impacting – With work engaging means supporting drive – Anchored to work
Patent
1977-12-05
1979-07-24
Hafer, Robert A.
Tool driving or impacting
With work engaging means supporting drive
Anchored to work
173152, E21C 900
Patent
active
041619889
ABSTRACT:
A portable earth core sampling machine has a principal supporting structure which is an upstanding hydraulic cylinder sub-assembly, comprising, a hydraulic cylinder serving as the principal vertical stationary body, a piston rod serving as the principal vertical extendable body, an elongated guide member secured to the exterior of the hydraulic cylinder, a sleeve slidable up and down the hydraulic cylinder along the elongated guide member, force transmitting tie rods secured between the extendable end of the piston rod and the sleeve, and a base, removably secured to the bottom of the hydraulic cylinder with radially extending legs terminating in receiving portions each holding a removable earth penetrating stake, and equipped to receive other subassemblies to complete the overall portable earth core sampling machine, such as: a hydraulic driving power unit subassembly mounted on the sleeve comprising, a driving hydraulic motor to rotate a hollow core digging auger; a transverse header box having a sheave mounted at each of its ends and mounted on the extendable end of the piston rod; a capstan secured to the hydraulic motor to receive and to power a rope passing over the sheaves of the transverse header box; a hydraulic control subassembly to direct hydraulic liquid to the reversible hydraulic motor and to direct hydraulic liquid to the hydraulic cylinder to move the piston and to control the speed of all hydraulic motions; and a combined hydraulic power source and distribution subassembly often remotely located.
REFERENCES:
patent: 2614803 (1952-10-01), Wiggins
patent: 3561545 (1971-02-01), Rassieur
patent: 3741318 (1973-06-01), Klein et al.
patent: 3780816 (1973-12-01), Arrington et al.
patent: 3797587 (1974-03-01), Klein
Hafer Robert A.
Mattern Jr. Roy E.
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