Patent ID: 7775015

Claim:
A system for feeding contents stored in a plurality of hoppers arranged along a raceway to envelopes fed to an envelope stuffing station from an envelope hopper comprising: a controller that allows each of the hoppers to be selectively enabled to and disabled from feeding contents pieces to the raceway and that senses a fault or miss in feeding contents to the raceway; and a control panel that includes (a) a plurality of on-off switches for respectively enabling and disabling feed of contents pieces from each of the hoppers, (b) a plurality of backup switches arranged on the control panel with respect to the on-off switches, wherein activating one of the plurality of backup switches directs the controller to switch from a respective primary hopper associated with the activated one of the backup switches to a respective secondary backup hopper associated with the activated one of the backup switches when the controller senses a miss or fault in feeding of the contents pieces from the primary hopper.