Material or article handling – Article reorienting device – Article support means rockable on fixed surface
Reexamination Certificate
2001-06-08
2002-09-03
Krizek, Janice L. (Department: 3652)
Material or article handling
Article reorienting device
Article support means rockable on fixed surface
C280S047120, C414S816000, C414S911000
Reexamination Certificate
active
06443688
ABSTRACT:
BACKGROUND
This invention relates to an apparatus and method for turning a roll or coil which has a substantially vertically extending central opening.
It is often desirable to turn or rotate a heavy roll or coil of material so that the roll can be mounted for unwinding with the central opening of the roll extending horizontally. For example, machines which are used to form molded or formed plastic products utilize a roll of plastic sheet material. The plastic sheet is unwound from the roll and advanced through the machine. The roll is supported for unwinding by a spindle, mandrel, chuck or the like which extends into the central opening of the roll.
Although the roll is unwound when its central opening extends horizontally, the roll is usually shipped and stored with the central opening extending vertically so that the roll rests on one of its flat ends. Before the roll can be mounted on the device which unwinds the roll, the roll must be turned 90°. If the roll is too heavy to be turned manually, a mechanical turning device must be used.
Many mechanical turning devices have been proposed and are available commercially. Representative devices are described in U.S. Pat. Nos. 3,016,158, 3,395,813, 4,067,451, 4,430,040, and 4,718,813. However, such turning devices are expensive.
SUMMARY OF THE INVENTION
The invention provides an inexpensive apparatus and method for turning heavy rolls or coils. The invention uses an inexpensive cart and a conventional forklift apparatus which usually already available for transporting the rolls inside the factory.
The cart includes a pair of perpendicular or orthogonal walls and rollers which are mounted on the cart adjacent the intersection between the walls. One or more rolls are lifted onto a horizontally extending wall of the cart by a forklift apparatus. The central opening of the roll extends vertically. One of the tines of the forklift apparatus is inserted under the horizontal wall and is raised until the other wall rotates into engagement with the other tine. The forklift is then lowered to allow the other wall to continue to rotate toward a horizontal position. When the other wall is horizontal, the central opening of the roll extends horizontally.
REFERENCES:
patent: 2375338 (1945-05-01), Alexander
patent: 3016158 (1962-01-01), Horton
patent: 3395813 (1968-08-01), Bruce et al.
patent: 3650419 (1972-03-01), Upshur et al.
patent: 3970205 (1976-07-01), Del Puppo
patent: 4067451 (1978-01-01), Winters
patent: 4119214 (1978-10-01), Blom
patent: 4173428 (1979-11-01), Thornberg
patent: 4430040 (1984-02-01), Halmos
patent: 4498841 (1985-02-01), Wickström
patent: 4705283 (1987-11-01), Kleisath
patent: 4718813 (1988-01-01), Kehlenbach
patent: 4772035 (1988-09-01), Danial
patent: 5035570 (1991-07-01), Petersson
patent: 5125495 (1992-06-01), Ganzberger et al.
patent: 5181731 (1993-01-01), Gustavsen
Krizek Janice L.
Schnadig Corporation
LandOfFree
Method and apparatus for turning a roll does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for turning a roll, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for turning a roll will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2855615