Conveyor apparatus and conveyor chain therefor

Claim 1

IN A CONVEYOR APPARATUS, AN ENDLESS CONVEYOR CHAIN COMPRISING A FIRST SERIES OF LINKS ALTERNATING WITH A SECOND SERIES OF LINKS AND CONNECTED FOR ARTICULATION IN TWO DIRECTIONS, ONE DIRECTIONS BEING AT RIGHT ANGLES TO THE OTHER DIRECTION, ROTARY DRIVE MEANS ABOUT WHICH SAID CHAIN ENGAGES THROUGH ARTICULATION IN SAID ONE DIRECTION, ROTARY ROLLER MEANS HAVING ITS AXIS OF ROTATION AT RIGHT ANGLES TO THE AXIS OF ROTATION OF SAID ROTARY DRIVE MEANS AND ABOUT WHICH SAID CHAIN ENGAGES THROUGH ARTICULATION IN SAID OTHER DIRECTION, SAID LINKS OF SAID FIRST SERIES EACH BEING IN THE FORM OF A FOUR-SIDED LOOP HAVING RECTANGULAR END WALLS AND TOP AND BOTTOM WALLS, AND SAID LINKS OF SAID SECOND SERIES EACH BEING IN THE FORM OF A FOUR-SIDED LOOP HAVING RECTANGULAR END WALLS AND SIDE WALLS, THE END WALLS OF THE LINKS OF SAID FIRST SERIES BEING ENGAGED AT THEIR INNER SIDES WITH THE INNER SIDES OF THE END WALLS OF SAID LINKS OF SAID SECOND SERIES, SAID TOP AND BOTTOM WALLS OF EACH OF SAID LINKS OF SAID FIRST SERIES BEING INDENTED TO PROVIDE SPACED LAND POINTS EQUALLY SPACED FROM ITS END WALLS FOR ENGAGEMENT WITH THE PERIPHERY OF SAID ROLLER MEANS AT EACH SIDE OF A RADIUS LINE THEREOF INTERSECTING THE CENTER POINT OF SAID LINK, AND THE SIDE WALLS OF EACH OF SAID LINKS OF SAID SECOND SERIES HAVING STRAIGHT EDEGES FOR ENGAGEMENT WITH THE PERIPHERY OF SAID ROLLER TANGENTIALLY OF A RADIUS LINE INTERSECTING THE CENTER POINT OF SAID LINK.