Envelope-stuffing machine

Details Envelope-stuffing machine Envelope-stuffing machine

1976-12-20

1977-11-01

McGehee, Travis S.

Package making

With means responsive to a sensed condition

Of receptacle or cover feed or adjunct feed or application

53386, B65B 5706, B65B 4330

Patent

active

040559327

ABSTRACT:
An envelope-stuffing machine adapted to insert sheets of paper or the like into an envelope or a folder comprises a pair of opposite perforated surfaces connected to a suction chamber and between which the envelope or folder is introduced so as to draw the opposite sides of the envelope or folder apart to receive the sheets to be inserted. A pressure sensor is provided to respond to the suction in the chamber communicating with the perforations of the surfaces to trigger the insertion of the sheets upon the detection of a predetermined reduced pressure in the chamber. The pressure sensor is of the threshold type.

REFERENCES:
patent: 3427780 (1969-02-01), Bock
patent: 3750365 (1973-08-01), Darby et al.

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