Abstract: A rotary rib cotton gin includes a plurality of gin saw blades axially spaced and rotatably mounted in a gin stand. A ginning breast is pivotally mounted on the gin stand and includes a plurality of stationary ribs having a lower end fixed to the ginning breast, and an upper free end disposed between each adjacent gin saw blade when the ginning breast is in the operating position. The ginning breast further includes a rotary rib rotatably mounted in the ginning breast above the free end of the stationary ribs. The rotary rib includes a plurality of axially spaced rotary discs fixably mounted on a rotatable shaft, wherein an end portion of each rotary disc is disposed between each adjacent gin saw blade when the ginning breast is in the operating position.

Abstract: A removable wear finger or plate is held in position on a gin rib by a machine screw on one end passing through a bore in the wear finger and an overlying cantilever retainer lip on an opposite end. The screw when tightened urges the wear finger toward the cantilever retainer lip.

Abstract: An improved gin saw stand for ginning seed cotton or reginning cotton seed is disclosed. The gin stand of this invention includes an inlet in the roll box allowing seed cotton or seed to be fed directly therein without the need for a huller front or its associated picker roller and huller ribs. A power driven paddle roller having a plurality of outwardly extending elongated paddles rotating in the opposite direction from the first gin saw cylinder is also placed within this roll box. The elongated paddles of this paddle roller are effective for independently turning the seed cotton and/or seeds accumulated in the roll box, consequently bringing them into contact with the gin saw cylinder where the lint may be gripped by the teeth of the saw. To control the rate of seed passage between the blades of the gin saw cylinder and their subsequent discharge from the gin stand, a power driven, seed metering roller is positioned adjacent to the saw cylinder and on the same side thereof as the ginning ribs.

Abstract: A plastic gin rib is manufactured of nylon material with long glass fiber reinforcement and carbon fiber reinforcement. In some cases, synthetic resinous fluorine-containing polymers is added to the nylon before molding.

Abstract: A method and apparatus for accelerating the removal of fully ginned seed from a seed roll established in the roll box of an operating gin stand, whereby the capacity of the stand is enhanced. The apparatus is characterized by a set of vanes attached to a finger shaft, said finger shaft being rotatable to change the angle of projection of the vanes to control the residual lint on the seed. The vanes are located so as to project into a vertical seed discharge shaft as the seed roll sags in its rotation toward the saws. The vanes are spaced to permit the seed roll to rupture as it passes over the vanes and the roll sags into the gap between the vanes, thus releasing fully ginned seed into the seed discharge shaft outside the surface of the saw between the vanes.

Abstract: A tungsten carbide insert is attached into a cotton gin rib at the ginning point.

Abstract: A ginning point assembly for use in conjunction with a cotton gin rib comprising a rectangular mounting plate for removable attachment to rib, first and second opposed recesses formed in plate, a roller mounted in each of recesses for rotation at ginning point in a direction transverse to the longitudinal axis of rib to which the plate is attached, and a shield attached to said mounting plate above said rollers to prevent said debris or cotton from interfering with the rotation of the rollers.

Abstract: A cotton gin bar including a roller assembly comprising a pair of discs rotatably arranged on the upper portion of the bar at the ginning point, the discs being operative on opposing sides of the bar for detaching lint from the seed. Each roller disc is provided with an annular rib and the gin bar is provided with an annular groove in which the rib is received, thereby defining a rotatable seal. The rotatable seal restricts the passage of small particles such as grit and lint which interfere with operation of the annular bearing on which the roller disc is mounted.

Abstract: A method and apparatus for accelerating removal of fully ginned seeds from a seed roll established in the roll box of an operating gin stand, whereby the ginning capacity of the stand is enhanced. The apparatus is characterized by improved ginning ribs interposed between saw blades of reduced spacing and characterized by a vertically oriented tail section for directing ginned seeds downwardly between the blades, and a seed extraction tube adapted to extend axially through a seed roll as it is established, said seed extraction tube being characterized by a plurality of apertures for accepting fully ginned seeds, and a conveyor for axially discharging the fully ginned seeds from the tube.