Conveyors: power-driven – Conveyor section – Screw
Patent
1980-06-04
1982-06-15
Reeves, Robert B.
Conveyors: power-driven
Conveyor section
Screw
198696, 294104, B65G 4786, B65G 2500
Patent
active
043346081
ABSTRACT:
Apparatus for transporting stacks of paper sheets in a spiral binding machine has a hollow frame with a forwardly and downwardly sloping front panel which is provided with a horizontal slot extending between a first station where fresh stacks of paper sheets are placed onto the exposed side of the panel and a second station where the stacks are subjected to one or more treatments, such as making of perforations, breaking up into smaller stacks, introduction of spiral binders, or looping of end portions of the outermost convolutions of inserted spiral binders. A tongs in the interior of the frame is mounted on a reciprocable carriage which is rigid with one jaw of the tongs and supports the other jaw through the medium of a pivotable lever which is pivotably connected with the other jaw. The carriage is reciprocable between the two stations and the lever and the other jaw have roller followers tracking cams which are movable up and down to retract the other jaw into the frame during movement of the carriage back to the first station, to move the other jaw outwardly through the slot and into engagement with a stack which overlies the one jaw at the first station, to thereupon maintain the jaws in engagement with the stack during movement of the carriage to the second station, and to open the tongs by moving the other jaw away from the one jaw upon arrival of the carriage at the second station. Springs are provided to bias the other jaw to the position of engagement with the one jaw or with a stack between the two jaws, and to bias the other jaw from the concealed position through the medium of the lever.
REFERENCES:
patent: 4167966 (1979-07-01), Cutter
patent: 4231466 (1980-11-01), Rather
patent: 4270652 (1981-06-01), Lay et al.
Bond Brian
Reeves Robert B.
Womako Maschinenkonstrucktionen GmbH
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