Abstract: A surgical arm rest or leg rest for supporting a patient's limb has concave tray or trough supported on a post member that extends downward. An elongated rod member situated below the tray with clamp member adjustably supports the post of the tray. A clamp member permits the rotation angle and tilt angle of the support post to be adjusted. An L-shaped support arm has a vertical arm portion adapted to be received into a support clamp mounted on the surgical table, and a horizontal arm that holds a sleeve member which supports the rod member. A locking lever on the sleeve member locks the rod member in place in the sleeve member.

Abstract: A line cutter in the form of an apertured disk or plate mounts onto the housing of a propeller drive or screw drive. The line cutter mounts over the propeller shaft, and covers the propeller shaft seal. The line cutter opening has a small clearance over the shaft which is smaller than a standard fish line gauge, i.e., about 0.002 inches. Fishline or other debris encountered by the screw drive winds around the shaft and winds back until it is torn, ground, or cut when it encounters the circular cutting edge at the small clearance. This line cutter is useful on a trash skimmer work boat.

Abstract: A surgical arm rest or leg rest for supporting a patient's limb has concave tray or trough supported on a post member that extends downward. An elongated rod member situated below the tray with clamp member adjustably supports the post of the tray. A clamp member permits the rotation angle and tilt angle of the support post to be adjusted. An L-shaped support arm has a vertical arm portion adapted to be received into a support clamp mounted on the surgical table, and a horizontal arm that holds a sleeve member which supports the rod member. A locking lever on the sleeve member locks the rod member in place in the sleeve member.

Abstract: A line cutter in the form of an apertured disk or plate mounts onto the housing of a propeller drive or screw drive. The line cutter mounts over the propeller shaft, and covers the propeller shaft seal. The line cutter opening has a small clearance over the shaft which is smaller than a standard fish line gauge, i.e., about 0.002 inches. Fishline or other debris encountered by the screw drive winds around the shaft and winds back until it is torn, ground, or cut when it encounters the circular cutting edge at the small clearance. This line cutter is useful on a trash skimmer work boat.

Abstract: A trash skimmer work boat collects and discharges debris from the front or bow. A storage conveyor positioned approximately amidships and along the center line, and is mounted to the hull on a slide or track arrangement that permits fore and aft motion. A collection and discharge conveyor is mounted at the bow portion of the hull. The forward conveyor can be oriented in a trash collection position or in a trash discharge position. The storage conveyor is brought sternward so that there is clearance for the proximal end of the forward conveyor to be raised or lowered, and then is brought back forward so that the storage conveyor is in position to receive debris or to discharge it. Auxiliary floats at the sides of the boat hull provide additional buoyant support for the front conveyor, and are detachable so they can be removed for road transport of the boat.