Original Publication Date: 1960-Aug-01
Included in the Prior Art Database: 2005-Mar-07
AbstractThe drop stacker is readily adjustable to stack 51 column or 80 column record cards.
The drop stacker is readily adjustable to stack 51 column or 80 column record cards.
Operation of handle 1 actuates a rack and gear mechanism carrying the pocket back stops 2. These move forwardly in the case of 51 column cards and backwardly against the read plate 3 for 80 column cards.
Coincident with displacement of the pocket stops, a bell crank 4 attached to the rear carrier 5 actuates another carrier 6 upon which is mounted a knife 7 for each pocket. The knives pierce the stacker springs 8 at a point designed to provide the same spring rate in proportion to card deck weight whether 51 column or 80 column cards are stacked. A high rate spring is effected for 80 column cards, and a low rate spring for 51 column cards, both from the same unit.