Jerome G Secor

US Patent:

43914519, Jul 5, 1983

Filed:

Sep 17, 1980

Appl. No.:

6/188109

Inventors:

Arthur D. Secor - Toledo OH
Jerome G. Secor - Toledo OH

Assignee:

Great Lakes Industries, Inc. - Toledo OH

International Classification:

B23B 3140
B23B 534
B23B 3110

US Classification:

279 2A

Abstract:

An air-mechanical expanding chuck for supporting a core for winding webs. A cylindrical chuck body defines a chamber which contains a piston with its piston rod extending out of the chamber for insertion into the core. The piston rod forms a tapered arbor at its end. Three gripping elements bear against flat surfaces formed on the tapered arbor. By applying air to one side of the piston, the arbor is moved inboard relative to the core and the gripping elements are thereby expanded to engage the core's interior. The chuck body's inward face is provided with radially extending T-grooves to receive corresponding T-formed outer ends of the gripping elements which are movable radially in the T-grooves. The gripping elements are readily removable from the grooves and replaceable by elements of other sizes for different diameter cores. To disengage the gripping elements, compressed air is applied to the inboard side of the piston thereby moving the piston, piston rod and arbor outboard relative to the core whereby the gripping elements are released from the core.

US Patent:

41473124, Apr 3, 1979

Filed:

Sep 22, 1977

Appl. No.:

5/835586

Inventors:

Arthur D. Secor - Toledo OH
Jerome G. Secor - Toledo OH

Assignee:

Great Lakes Industries, Inc. - Toledo OH

International Classification:

B65H 7524

US Classification:

242 72R

Abstract:

A self-contained cylindrical expandable mandrel comprising a closed liquid hydraulic system pressurized by the smaller end of a piston, the larger end of which piston is compressed by a gas, such as compressed air from an outside source through a hose connectable to a pneumatic tire-type check valve on the unit. The closed liquid hydraulic system from the smaller end of the piston flexes a plurality of diaphragms directly urging plungers radially outwardly around the cylindrical mandrel for pressing buttons, bars, or leaves against the inside hollow cores of rolls of web or sheet material for positively grabbing these rolls for rotation directly with the shaft connected to the mandrel. Either a pair of these mandrels may be inserted in opposite ends of the core of a roll, or a complete shaft may be extended through the core of the roll from one end to the other, which shaft may be provided either with an air-type bag or accumulator for maintaining an even pressure on the hydraulic system at the end thereof opposite the piston-operating mechanism, or separate piston-operating mechanisms may be installed in each end of the shaft. Resilient means such as spring means may be provided for retracting each of the radially extending plungers and/or the piston to resist the fluid pressures and release the cores by contracting the expandable mandrels.