Abstract: Apparatus for inserting one or more documents into a waiting envelope. The apparatus includes: a supporting frame; a device mounted in the frame for holding the envelope; a movable, endless belt rotatably mounted in the frame for transporting one or more documents into the waiting envelope; and a datum guide plate secured to the frame above the movable belt. The movable belt includes an upper reach which is biased toward the datum guide plate.

Abstract: Translatable registration apparatus in an envelope turning machine. The apparatus includes: a deck for transporting a plurality of envelopes from an upstream location to a downstream location; a translatable carriage mounted to the deck and adjustable for upstream and downstream movement to accommodate different size envelopes; a yoke pivotably mounted at its upstream end to the carriage, the yoke having a stopping finger projecting upwardly at its downstream end; a solenoid located beneath the finger and mounted to the carriage; and a device engaging the solenoid and the yoke for moving the finger up above the deck and down below the deck, wherein, when the solenoid raises the finger above the deck, the stopping finger is locked in a raised position with no pressure bearing on the solenoid.

Abstract: Apparatus for turning an envelope, including: a housing; a transport deck secured to the housing for transporting an envelope from an upstream location to a downstream location, the deck including a device for moving the envelope; a vertically extending spindle located beneath the deck, the spindle being rotatable and reciprocable and having an upper end capable of extending above the transport deck; a device for raising and rotating the spindle; and a clamping arm assembly rotatably mounted to the housing situated above the transport deck, the clamping arm assembly having a device for applying a light, downward bias on the envelope against the upper end of the spindle, and a device for applying additional pressure to the envelope after the spindle is raised.