Abstract: A vehicle or cart for movement in mutually perpendicular directions includes two sets of driving chains both in contact with the floor at the same time, one set for driving in one direction includes rollers whose axes are parallel to the direction of movement and thus provide gripping with the floor when moving in that direction and the corresponding rollers on the oppositely directed chain links have their axes perpendicular to the direction of movement and thus roll along the floor without impeding, significantly, the movement of the vehicle in the first direction. When the vehicle or cart moves in the second direction the rollers on the second set of chain links engage the floor while the rollers of the chains in the first links roll without impeding the movement.

Abstract: A portable cage for compressing food articles during processing of the articles as by heating, smoking or the like. The cage includes means for moving a pair of trays toward each other to apply pressure on food articles between the trays and means for limiting the pressure so applied to a predetermined amount. The device is further capable of applying different predetermined pressures to articles on different trays, the amounts of such predetermined pressures being determined so as to offset the differences of the weights of the articles on the trays to thereby make the total pressures on the food articles on each tray more uniform. The mechanism is easily operable to open and close the cage for loading and unloading of the articles but is capable of developing substantial pressures when the trays are pressed against the food articles. Another feature of the improved cage is the provision of trays having spaced screens with mechanisms between the screens for bringing pressure on the food articles.

Abstract: An animal exerciser especially well suited to horses that provides means for straight line exercising and positive turning in apparatus including a carriage, means for reciprocally moving the carriage in a substantially straight line, means for attaching the animal to the carriage, and means for supporting the operative elements at a desired height. A preferred embodiment has an endless belt and means connecting an anchor point on the belt to alternating positions on the carriage whereby the direction of travel of the carriage is reversed at each end of the line of travel.

Abstract: An automatic cleaner for overhead conveyor rails which has independently driven wheels riding on the rail and supporting a carriage having vertically disposed rotatable brushes which are axially rotated for progressively cleaning opposite sides of the rail as the carriage traverses the rail in either direction. The brushes are automatically adjusted vertically while rotating to avoid interference with rail hanger brackets and other obstructions on the rail.