Elongated-member-driving apparatus – With means to support member and/or work relative to driver – Work support
Patent
1994-01-12
1996-12-24
Rada, Rinaldi I.
Elongated-member-driving apparatus
With means to support member and/or work relative to driver
Work support
227131, B25C 700
Patent
active
055867103
ABSTRACT:
A power stapler having a clincher provides a stitcher head for driving formed staples into a stack of sheets. A clincher box is positioned opposite the stitcher head. Clinchers located in the clincher box pivot upwardly under the force of a moving clincher bar to deform ends of the staple to pass through the sheet stack. The clincher bar or clinchers include a stop that limits retraction of the clinchers into the box. Hence, as the staple is driven by the stitcher head through the sheets, the ends of the staple are brought into engagement with the clinchers and plastically deform into a substantially inwardly curled shape. Following driving of the staple by the stitcher head, the clincher bar is actuated to rotate the clinchers upwardly toward the stack causing the curled tips of the staple to drive into the sheets. The clinchers can include grooves that are angled into alignment along parallel angled lines so that the ends of the staple pass each other and do not interfere with each other upon clinching.
REFERENCES:
patent: 1612870 (1927-01-01), Leschhorn
patent: 4546910 (1985-10-01), Logtens
patent: 4593847 (1986-06-01), Hagemann
patent: 4792077 (1988-12-01), Faltin
patent: 5004142 (1991-04-01), Olesen
patent: 5029745 (1991-07-01), Akizawa et al.
Spehrley, Jr., Charles J., Xerox Disclosure Journal, Semi-Active Clincher, vol. 8, No. 3, May Jun. 1983, pp. 187-188.
Rada Rinaldi I.
Roll Systems Inc.
Schrock Allan M.
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