发明申请
US20100193406A1 Equipment for use in the extraction of placer gold from gravel and sand deposits 有权
用于从砂砾和沙子沉积物中提取沉积金的设备

Equipment for use in the extraction of placer gold from gravel and sand deposits
摘要:
A portable device for the separation of gold from other materials commonly found in placer deposits of gravel, sand, etc. Including an upper tray (72) into which is located a water spray assembly and placer materials classifier. This upper tray to be hinged to middle sluice tray (98), which has located on its bottom panel an expanded metal section (38) on top of a final mat (40) consisting of ribbed rubber matting or other suitable material, which has a series of groves, to be used as washable riffling device. Lower sluice tray (96) to be attached by hinging device to middle sluice tray (98) and locked into place by lower tray locks (48). Lower sluice tray to have laying on its bottom panel a continuation of final mat (40). This mat to be held in place by a riffle cage (36) containing a series of rigid riffles. Riffle cage (36) to be secured by hold down clamps (64). Expanded metal to be held in place by tab (42). Upper tray to be supported by sliding brace (43) and locking handles (94). Device to be supported by legs (68) and extenders (74). Water to be supplied by small pump to device through flexible hose connected to feed pipe (78). When not in use the device to be folded and compactable into small portable unit with storage of legs, mat, riffle cage and other removable accessories inside embodiment and secured by means of storage lids (30) and (90). Lid (90) to be secured by means of locks (48) and tabs (114). Device to be carried by handle (88).
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