Material or article handling – Apparatus for moving intersupporting articles into – within,... – Unstacking apparatus
Patent
1994-07-15
1997-10-07
Merritt, Karen B.
Material or article handling
Apparatus for moving intersupporting articles into, within,...
Unstacking apparatus
4147957, B65G 5906
Patent
active
056740484
ABSTRACT:
An arrangement for handling stacks of articles, each article having a predetermined height dimension, employs a stack guide for maintaining the stack of articles in stacked alignment, and an elevator for rasing and lowering the stack guide. A retractable support is coupled to the stack guide for supporting the articles and selectably releasing a lowermost one of the articles, or in the alternative, picking up an article, such that the article is added onto the bottom of the stack. The retractable supports extend along the length of the articles and are rotatable between engaged and disengaged positions. A linear actuator is coupled to the retractable supports by operation of links and effects the rotation between the engaged and disengaged positions. A limiter assembly determines the lowermost limit of the elevator, and also defines a predetermined extent of upward travel, which predetermined extent corresponds to the height of an article of the stack. The lowermost limit of the elevator, as well as the upward extent of travel so as to correspond to the height of the articles, is predeterminable using a stop gauge and an increment gauge.
REFERENCES:
patent: 2769570 (1956-11-01), Adams
patent: 2858043 (1958-10-01), Fenton et al.
patent: 2940327 (1960-06-01), Gartner
patent: 3757971 (1973-09-01), Frish
patent: 3858732 (1975-01-01), Kemper
patent: 4043460 (1977-08-01), Steele
patent: 4702660 (1987-10-01), Niehaus et al.
Merritt Karen B.
Morse Gregory A.
Technology Handlers, Inc.
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