As a result of the development of machines for automatically inserting electronic components into printed circuit boards, it has become desirable to provide mechanisms to automatically supply the board to the component insertion machines. Devices of this type are illustrated in U.S. Pat. Nos. 3,722,062; 3,808,662; 4,209,898 and 4,283,847. These mechanisms all operate on the principle of transferring the board from one end of the component insertion device to the other by means of a continuous conveyor of some type upon which the board is carried. This requires the board to be removed from one storage magazine and transferred to a separate receiving magazine after the component insertion has taken place.