| 摘要 |
An apparatus of feeding mailpieces such as envelopes is disclosed. The apparatus includes a supply conveyer for supporting thereon an array of mailpieces which are arranged in a tilted-backward position and moving such mailpieces forward, and a suction feeder which is located downstream of the supply conveyer for picking up by suction a forefront mailpiece from the array of mailpieces on the supply conveyer. The suction feeder has a rotary drum, a shaft rotatably supported in the drum and disposed with the axis thereof oriented in parallel to and offset from the axis of the drum. An external gear is fixed on the shaft for rotation therewith and a stationary internal gear engages with the external gear, the gear ratio of the external gear to the internal gear being n:n+1, wherein n represents an integer. A plurality of suction means arranged at positions radially spaced at a predetermined distance from the shaft and substantially equiangularly spaced from each other and movable integrally with the shaft in conjunction with the rotation of the drum for picking up each forefront mailpiece from the array of mailpieces on the supply conveyer.
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