Patent CA-1105446-A (CA)
Inventor: HART RONALD D
IPC: E21B49/02
Filed: 1979-03-13
Granted: 1981-07-21
Abstract: ABSTRACT OF THE DISCLOSURE   A principal supporting structure for a portable machine used, when fully equipped, in taking earth core samples during earth or soil testing opera-tions, in one embodiment, is essentially an upstanding hydraulic cylinder sub-assembly, comprising, a hydraulic cylinder serving as the principal vertical stationary body of this portable machine, a piston rod serving as the principal vertical extendable body of this portable machine, an elongated guide member secured to the exterior of the hydraulic cylinder, a sleeve slidable up and down the hydraulic cylinder, while following the elongated guide member, force transmitting tie rods secured between the extendable end of the piston rod and the sleeve, and a base, preferably removably secured to the bottom of the hydraulic cylinder and having radially extending legs terminating in receiving portions each having a removable earth penetrating stake, and thereby being ready to receive other sub-assemblies to complete the overall portable machine, such as a hydraulic driving power unit sub-assembly mounted on the sleeve which slides up and down the hydraulic cylinder, comprising, in turn, a driving hydraulic motor and its attachment accessories to secure and to rotate a hollow core digging auger, a transverse header box having a sheave mounted at each of its ends and in turn mounted on the extendable end of the piston rod, and also having a capstan secured to the attachment accessories of the hydraulic motor to receive and to power a rope passing over the sheaves of the transverse header box, when the end of the rope is attached, for example, to a calibrated hammer used in preparing a core sample, and the other end of the rope is guided by an operator to and from the capstan, where the rope is wound around at least one time, a hydraulic control sub-assembly secured to the elongated guide member on the hydraulic cylinder at a height for convenient manipulation by an operator, comprising, in turn, a multiple valve sub-assembly to direct hydraulic liquid to the hydraulic motor for operation in either rotational direction and to direct hydraulic liquid to the hydraulic cylinder to extend or to retract the piston, a hydraulic liquid control valve optionally serving with the hydraulic control sub-assembly as a throttle to control the speed of all hydraulic motions, and/or a combined hydraulic power source and distribution sub-assembly, comprising, in turn, a hydraulic pump, a motor to drive the hydraulic pump, a hydraulic liquid tank, a housing to secure together the hydraulic pump, motor, and tank in conveniently handled power pack, and hydraulic hoses and fittings to conduct hydraulic liquid to and from the often remotely located power pack, during the distribution of the hydraulic liquid, via the hydraulic control sub-assembly, to the hydraulic cylinder sub-assembly and to the hydraulic driving power unit sub-assembly, when earth core samples are being taken during soil testing operations, and in other embodiments using a pneumatic system, and for a basic power source, using either gasoline or diesel engines, or electrical motors.