Gould Engineering
The Gravity - Trap System
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GOULD GRAVITY-TRAP SYSTEM

Price with Hopper  599.95
Price without Hopper  549.95

The Gould-Gravity-Trap is a new concept in the
design of Sluice Boxes.

This design does not use a carpet or miners moss, nor does it use the conventional riffle system. The current model available is 24 inches long and 12 inches wide and 4 inches high.

The box can be configured as a dredge or as a Motor Sluice (High Banker).

As a dredge it can be configured from 1.0 to 3.0 inch.

4.0 to 8.0 inch requires larger boxes, which can be custom ordered.

The Motor Sluice can also be configured to adapt to a dredge from 1.0 to 3.0 inches.

The main difference between the Motor Sluice and the standard Gould-Gravity-Trap dredge is that a box is added to the Gould-Gravity-Trap in place of the dredge hose adapter. The box uses a Grizzly, placed at a sixty degree angle and is equipped with a 360 degree Spray Bar for maximum material coverage.

During operation, one shovels material into the box. The water from the spray bar, washes the sand and precious metals which end up dropping through the Grizzly bars.

The waster rock larger than 3/4 of an inch, slides down the Grizzly bars, to the waste pile.

The principle of the Gould-Gravity-Trap is as follows:

There are 6 horizontal slots, which are located approximately 4 inches apart from each other, extending down the length of the sluice. Each slot is 12 inches wide and 0.125 inch in length. Located before each slot is a De-accelerator, which is less than 0.5 inches in height and 12 inches long. The function of the De-accelerator is to provide a stall, which generates an Eddie Current. There is a 0.100-inch space under each De-accelerator to allow the Gold and heavy materials to go under and then be trapped by the Gravity-slot.

The De-accelerator also catches the Gold nuggets that would not fit into the slots. The inventor uses small pieces of lead to substitute or emulate the Gold nuggets. In actual testing it was found that the nuggets would be caught at the first De-accelerator.

The material from all 6 slots drop into a Splitter, which divides the material into two separate material streams.

Each material stream is directed and stored by a Storage Compartment. The contents of each compartment is directed into a Corrugated Tube, which performs the final cleanup and captures the Black Sand and Gold.

The Corrugated Tubes are supported by individual troughs, which are placed at a negative angle to cause the material to flow to the ground.

The tubes are removed for final cleanup by pouring their contents into a Gold pan.

The Gould-Gravity-Trap has the ability to trap 99% of the Gold. Fine Gold is the hardest thing for a conventional sluice box to trap, where as the Gould-Gravity-Trap masters this task.

Reggie Gould Gold Miner & Engineer

Phone: 530-333-9130 Fax: 530-333-9130 

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Gould Engineering
P. O. Box 406
Garden Valley CA 95633
Phone: 530-333-9130 Fax: 530-333-9130 
contact us by email

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