Rotary Patents (Class 144/188)
  • Patent number: 6152200
    Abstract: Apparatus for creating wooden shavings for stock bedding from logs which includes a frame supporting a carriage bed and rotary carriage ring. Arcuately spaced rotary cutter means are provided on the carriage bed, and are positioned to contact logs supported on the carriage ring. The carriage ring consists of an annular carriage support ring which supports arcuately spaced log-receiving boxes, so that upon rotation of the annular carriage support ring, logs positioned within the log-receiving boxes are exposed to the cutting action of the rotary cutter means.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: November 28, 2000
    Inventor: Gerald Smothers
  • Patent number: 4289178
    Abstract: A liquid pressure control system for advancing logs (19) towards a rotary cutter wheel (10) in timed relationship to successive cuts by cutters on that wheel (10). A cam arrangement (52) on the cutter wheel (10) actuates jerk pumps (71 and 72) to dispense hydraulic fluid to hydraulic rams (33 and 34) in the timber feed mechanism (18).
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: September 15, 1981
    Inventor: Bernard T. Rogers
  • Patent number: 4282910
    Abstract: A fingerling shear for shearing a length of wood in a plane transverse to the grain direction and for splitting the sheared length along the grain direction to form a plurality of fingerlings. The shear includes a planar shearing blade, supported for rotation about a generally vertical axis, the planar shearing blade including an involute cutting edge adapted to engage the elongated piece of wood during rotation of the blade and for shearing off a length of that piece of wood, and a plurality of splitting blades fixed to the lower surface of the planar shearing blade and spaced along the involute cutting edge, the splitting blades each including a leading cutting edge spaced from the involute cutting edge of the planar blade and extending tranversely to the lower surface, the cutting edges of the splitting blades being adapted to sequentially engage portions of the sheared length of the wood stock to sequentially split fingerlings from the sheared length.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: August 11, 1981
    Assignee: Michigan Technological University
    Inventors: Tauno B. Kilpela, Bruce A. Haataja