Abstract: A variable-speed drive unit for a chain drive comprising a drive wheel (12) which contains a series of radially mounted threaded rods (14) which pass through internally threaded blocks (22), upon which are selectively mounted free wheeling sprockets (28) and rigidly connected driving sprocket segments (30); the radially inner end portions of the threaded rods (14) being rotatably mounted into a hub (10) and rigidly attached to a primary bevel gear (34) which engages secondary bevel gears (36) (38) mounted on either side thereof; the secondary bevel gears (36) (38) being attached to actuator disks (40) (42) mounted on either side of the unit; the actuator disks (40) (42) being disposed for selective engagement by spring biased actuator arms (54) (56) whereby the associated bevel gears (34) (36) (38) will be rotated thus moving the blocks (22) selectively up or down the threaded rods (14) so as to effectively vary the diameter of a circle described by the chain sprockets (28) and sprocket segments (30) as they

Abstract: This disclosure is directed to an internal combustion engine having a plurality of double oscillating pistons disposed around the interior of the housing, each side of each oscillating piston having a cam arm which applies the force of combustion to a cam gear. The cam gear has a cam surface on its exterior which engages the cam arm and a ring gear on its interior which engages a plurality of planetary gears which in turn drive a drive shaft having a sun gear.

Abstract: An improved animal trap of the snare type includes a snare housing having a connection for the snare end of the snare cable and adapted to slide on the main anchor portion of the snare cable. The self-tightening action of the snare, once an animal is caught in the snare loop, is supplemented by a settable and releasable spring member carried by the snare housing in combination with mechanism for operatively connecting the spring member to the snare cable for quick final tightening of the snare loop in response to release of the spring member. The trap includes a trigger device operatively connected to the spring member for releasing the spring and providing a quick final tightening of the snare loop as it finally closes on an animal. The snare housing may include an injection needle for injecting the animal with a lethal or other fluid.