Top sheet hold down for stacked sheet handling machine

Details Top sheet hold down for stacked sheet handling machine Top sheet hold down for stacked sheet handling machine

1991-05-14

1993-04-27

Huppert, Michael S.

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Unstacking apparatus

4147968, B65G 5902

Patent

active

052057038

ABSTRACT:
A stacked sheet handling machine 11 includes a top sheet hold down apparatus 10 that prevents trailing sheets from following individual blocks of sheets separated from an upright stack supported on an elevator conveyor 15. A pusher plate 20 is moved laterally of a sheet stack 14 to engage a side 22 of the stack and push a sheet block 21 laterally from the stack and onto the discharge conveyor 17. A top sheet hold down is provided along the sheet block separator to securely hold the top sheet through provision of a hold down traction arrangement 38. Two forms of the hold down traction arrangement are disclosed, both being operated to move a friction surface against the top surface of the sheet 19 to hold the sheet stationary as the block is moved towards the discharge conveyor 17.

REFERENCES:
patent: 3892168 (1975-07-01), Grobman
patent: 4431358 (1984-02-01), Jenkner
patent: 4457658 (1984-07-01), Meylan
patent: 4700941 (1987-10-01), Shill
patent: 5044874 (1991-09-01), Shill
"The Jumbo Feedmaster," brochure of Thermoguard Equipment, Inc.

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