Glueing attachment for collating machine

Claim 1

A GLUEING ATTACHMENT FOR A COLLATING MACHINE OF THE TYPE HAVING A CONVEYOR, MEANS LOCATED ADJACENT SAID CONVEYOR DEFINING PLURAL STATIONS FOR STORING STACKS OF SHEETS ADAPTED TO BE PLACED ON SAID CONVEYOR IN A COLLATED ARRANGEMENT AND SHEET-TRANSFER MEANS AT EACH SAID STATION FOR TRANSFERRING INDIVIDUAL SHEETS FROM SAID STACKS TO SAID CONVEYOR INCLUDING A PAIR OF SPACED PICKING FINGERS OPERATIVELY CONNECTED TO A VACUUM AND EFFECTIVE TO DRAW THE TOPMOST SHEET OF A STACK THROUGH A PRESCRIBED LIFT MOVEMENT AGAINST SAID PICKING FINGERS IN RESPONSE TO THE APPLICATION OF SAID VACUUM THROUGH SAID PICKING FINGERS, SAID GLUEING ATTACHMENT BEING OPERATIVELY ASSOCIATED WITH AT LEAST SOME OF SAID SHEET-TRANSFER MEANS AND COMPRISING GLUE-APPLYING MEANS LOCATED ADJACENT TO SAID SPACED PICKING FINGERS AND HAVING AN EXIT OPENING THEREIN OPERATIVELY ARRANGED IN FACING RELATION TO SAID TOPMOST SHEET OF SAID STACKS AND FLOW-CONTROL MEANS IN SAID EXIT OPENING EFFECTIVE TO BE ACTUATED BY CONTACT OF SAID SHEET DURING SAID PRESCRIBED LIFT MOVEMENT THEREOF INTO AN OPERATIVE POSITION PERMITTING A CONTROLLED FLOW OF GLUE FROM SAID EXIT OPENING ONTO SAID SHEET FOR MAINTAINING THE COLLATED ARRANGEMENT OF SAID SHEETS WHICH ARE TRANSFERRED TO SAID CONVEYOR.