Article automatic storage and retrieval apparatus

Claim 1

A commodity retrieval and storage apparatus comprising, shelf means for holding a plurality of said commodity, said commodity having a generally circular outer periphery and said shelf means having a concave depression therein with a lower support surface and an upstanding backwall to support said commodity, carriage means, displaceable along said shelf means, and including means for retrieving selected ones of said commodity from said shelf means, said retrieving means including, a forwardly extending upper arm, and a forwardly extending lower arm, said upper and lower arms being arranged to pivot from a first rest position to a second commodity engagement position, a movable member, a first flexible member extending from said upper arm to said movable member, a second flexible member extending from said lower arm to said movable member, said lower arm including an inclined plane portion at a forward end of said lower arm, means for moving said inclined plane portion of said lower arm under said commodity, whereby said commodity is moved in an upward direction along said upstanding backwall, means operative when said inclined plane portion has been moved under said commodity for displacing said movable member and said first and second flexible members, and for pivoting said upper arm and said lower arm from said first rest position to said second commodity engagement position, a first support member, wherein said upper arm is pivotally attached to said first support member, said commodity retrieval and storage apparatus further including a first sprocket wheel fixedly joined to said upper arm at said point of pivotal attachment, said first flexible member being attached to said first sprocket wheel and a plurality of additional sprocket wheels for carrying said first flexible member from said first sprocket wheel to said movable member, a second support member, wherein said lower arm is pivotally attached to said second support member, said second flexible member being attached to said lower arm and being carried to said movable member by one of said plurality of additional sprocket wheels.