Patent ID: 7465139

Claim:
A machine which processes sheet-shaped material, having an apparatus comprised of a weighing device, a regulating and controlling device, a driving mechanism, a conveying system, a stack carrier, and a separating and conveying device; wherein said regulating and controlling device is connected to both said weighing device and said driving mechanism, with said driving mechanism further connected to said conveying system, and said conveying system operationally connected to said stack carrier; and wherein at least one permissible weight is stored in said regulating and controlling device and said regulating and controlling device compares said stored permissible weight to the weight of the stack determined by said weighing device and activates said driving mechanism only if said weight of the stack does not exceed said stored permissible weight, and can either lift said stack carrier from a stack-taking position after said stack carrier has taken a stack of sheet-shaped material or can lower said stack carrier after the singulating and discharging of the sheet-shaped material by said separating and conveying device; and wherein said apparatus further comprises an auxiliary stack carrier, wherein if said weight of the stack does not exceed said stored permissible weight, said driving mechanism can lower said stack carrier after the transfer of said stack to said auxiliary stack carrier.