Browse Prior Art Database

Picker Knife Mechanism

IP.com Disclosure Number: IPCOM000079141D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Rigotti, JM: AUTHOR

Abstract

The mechanism utilizes a spring steel picker knife 10 having a thick end portion 10a forming an abutment, for engaging the bottom card of a card deck 12 and feeding the bottom card forwardly from beneath deck 12 as the knife is reciprocated.

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Picker Knife Mechanism

The mechanism utilizes a spring steel picker knife 10 having a thick end portion 10a forming an abutment, for engaging the bottom card of a card deck 12 and feeding the bottom card forwardly from beneath deck 12 as the knife is reciprocated.

A picker knife arm 14 is oscillated by an eccentric 16 disposed on a rotatable disk 18 and fitting in a slot 20 of arm 14. Picker knife 10 is attached to the top edge of arm 14 so that knife 10 is reciprocated, as arm 14 reciprocates. Card deck 12 is supported by card bed 22, and knife 10 reciprocates in a longitudinal slot provided in bed 22. The spring of knife 10 is biased so that knife 10 is spring loaded upwardly against the bottom of deck 12.

Card feeding is interrupted by a coil 24 attached to arm 14. Armature 26 is attached to picker knife 10, and coil 24 is energized in order to pull knife 10, against its spring action, downwardly out of engagement with the bottom card of deck 12.

Picker knife 10 is prevented from being released after a small forward movement of the knife has occurred if coil 24 is energized during this small movement, so that knife 10 does not partially engage with the lowermost card in deck 12 damaging the card edge. This is accomplished by arm 28 which is spring loaded against a stop 30 by spring 32. Arm 28 has a portion 28a overlying and engaging with surface 26a on armature 26, if coil 24 is energized long enough to hold armature 26 downwardly during an initial small angle...