E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
262/30
E02F 3/92 (2006.01) E02F 9/28 (2006.01)
Patent
CA 1046092
ABSTRACT OF THE DISCLOSURE A cutter head for a suction dredge which is constructed of simplified wearing parts and strength members which may be easily assembled and replaced. The cutter includes a circular front plate mounted on a hub. Portions of the circular front plate are cut away to form a plurality of spokes extending radially outwardly of the hub. Struts extend between the circular plate and a back ring having a greater radius than the spokes to form a truncated conical cutter head. Blades are connected to the struts and are inclined in the direction of rotation of cutter head. A plurality of inclined lifter plates are attached to the circular front plate on the rear side thereof. Each lifter plate is aligned with and extends rearwardly from a cut-away portion of the circular front plate. Scoops are mounted on the front side of the circular front plate and each scoop forms a forward extension of an inclined lifter plate. Cutting tooth assemblies are attached to and are positioned along the struts. The teeth extend radially to the longitudinal axis of the cutter head and project outwardly beyond the blades. Each cutter tooth is positioned in a socket mounted on a strut. Each tooth is held in its socket by a removable fastener extending through aligned openings in the socket and in the tooth. A tooth backup member engages the trailing edge of each tooth to absorb forces exerted against the tooth during digging operations.
270899
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