Gus Sampler
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DRILL COMPANY (Gregory Undisturbed Sampler) This unique, air or hydraulic piston sampler was designed and test proven in the drilling field for many years. The design allows the sampler to be classed as a truly undis- turbed piston sampler producing high production sampling. The GUS Samper is assembled on a drill rod and lowered to the bottom of a cleaned bore hole. The drill rod may be chucked by means of a chucking rod. A water swivel is attached with a hose line coupled to the swivel and the pressure As the water or air pressure is applied to the drill rods at approximately 100 to 600 PSI, the piston in the head of the assembly forces the thin wall sample tube in the soft underlying soil or clay materials to take the sample. Once the sampler reaches the end of its maxi- mum travel, the water or air used for pressing exhausts through a relief hole and returns im- mediately to the surface. This is a signal to the operator that the sample has been taken to its maximum depth. Depending upon the materials being sampled, the sampling may take only a few seconds or as much as one minute to reach its maximum A compressed air bottle or tank may be used in lieu of a fluid pump for pressing the sample, however, one must be careful to limit tank pres- sure to prevent "over pressure" which may col- lapse the sample tube. After the sample has been taken, the rods and sampler are pulled to the surface and the sam- pler is layed out on the work table for removing of the sample tube containing the sample. The outer tube of the sampler containing the sample is rotated in a counter clockwise direc- tion three turns which releases the "vacuum lock" created over the sample in the sample tube and allows for easy removal of the sample tube from the assembly. A new sample tube is then installed on the sampler head for addition- al tests and the procedure repeated. Pressure Inlel Vacuum Lock Release Port Stationary Piston Undisturbed Sample - Sample Tube (1) The hole is drilled by rotary means and pre- pared by using either casing or drilling mud to (2) The drill rods extending the sampler to the bottom of the hole may be clamped to the cas- ing to prevent upward movement from down thrust of fluid or air pressure used...or rods may be connected to the chucking rod in rotary drill (3) A water swivel or adaptor is used to direct fluid or air into the drill string to operate the (4) A positive displacement pump or com- pressed air is used to exert pressure on the sta- tionary piston of the sampler. Pressure range normally required is 100 to 600 PSI for at least Bore hole size need not be larger than sampler Available in 4 popular sizes - 2-1/2", 3", 3-1/2", Fluid or air under pressure is required to oper- Simple to operate - there is no need for actuat- ing rods or complicated procedures Uses standard ASTM thin wall steel sampler tubes with standard holes and cap screws Sampler adapts directly to standard AW or NW drill rods Used in holes cased with mud, steel casing or self supporting auger holes Piston closes off sampler until sample is taken Maximum length of sample recovered is 24" Maximum pressure required -100 to 600 PSI Stainless steel actuating cylinder Drill rig is not necessary for sampling; how- ever, hoist is required to lift tools and sampler from the drill hole Inexpensive when compared to other compa- rable types of samplers E-Mail: sales@ackerdrill.com Website: www.ackerdrill.com

DRILL COMPANY QPILL COMPANY E-Mail: sales@ackerdrill.com Website: www.ackerdrill.com Policy: The policy of Acker Drill Co., Inc. being one of continual improvement, we reserve the right to change design or materials at any time, without giving notice or creating any obligation to previous or future customers.