Abstract: The present invention provides a carrier stopping device for a conveyor having a disengageable propelling member, such as a power and free conveyor. The stopping device preferably utilizes a linear induction motor to activate a stop plate of the stopping device. The stop plate is locked in an extended position and a retracted position by a locking pin which reacts to the electromagnetic force of the linear induction motor.

Abstract: A forged conveyor trolley bracket has head, arm and base portions bounded by sides, and a bent elbow formed in the arm portion medially of the head and base portions. A web, disposed centrally between the sides along the base and arm portions, has outer and inner faces. Projecting from the web outer face adjacent to the bracket sides are a pair of base portion reinforcing ribs and an outer pair of arm portion reinforcing ribs forming continuations of the base portion reinforcing ribs. An inner pair of arm portion reinforcing ribs project from the web inner face along the arm portion in opposed aligned relation with the outer pair of arm portion ribs; and, this inner pair of ribs extends from the base portion along the arm portion with a depth which increases to substantially equal the depth of the outer pair of ribs at the bent elbow, and which gradually decreases from the bent elbow to the head portion where the inner pair of ribs terminates.

Abstract: An article transporting wheeled cart is reciprocatably moved along a pair of transversely spaced rails by a power transmitting unit detachably mounted between and below the rails and comprising a pair of trolley tracks secured to the upstanding legs of transversely extending longitudinally spaced U-shaped track yokes which have base portions located below the tracks and attached to a fluid pressure cylinder unit longitudinally coextensive with the tracks. A trolley, having a pair of oppositely acting driving dogs engageable with the cart, is supported on the tracks and is connected to a motion transmitter reciprocatably driven by the cylinder unit.

Abstract: A self-propelled trolley and supporting track structure, the trolley forming a housing for a four wheel drive mechanism which is coupled to a driving motor attached to the housing and to a pair of axles each equipped with a pair of driving and supporting wheels adapted to engage transversely spaced track surfaces of the track structure. The track structure comprises a pair of transversely spaced channel section track members, each having upper and lower flanges terminating in guide surfaces and connected by a vertical web, the guide surfaces of one track member facing the guide surfaces of the other. The track surface are formed by the upper flanges of the track members and the guide surfaces are engageable by pairs of guide wheels appended to the trolley below the housing. A conductor bar assembly enclosed within the track members is engaged by collector shoes attached to the trolley.

Abstract: A guard for enclosing the sprocket, trolley and chain elements of a conveyor at a sprocket wheel turn, comprises a circular cover portion having a diameter greater than that of the sprocket and a skirt extending generally perpendicularly from the entire circumferential edge of the cover portion. Portions of the skirt are severable therefrom at locations defined by the ends of the arc of the turn at which the guard is mounted to provide passages for the conveyor chain through the skirt and into engagement with the sprocket.