Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members
Patent
1987-03-23
1988-08-16
Bell, Paul A.
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including supply magazine for constantly urged members
227109, 227132, B25C 700
Patent
active
047638249
ABSTRACT:
A stapler includes a base, a cassette mounting member pivotally mounted on the base and a handle pivotally mounted on the cassette mounting member. The handle includes a driving blade at its forward end. The cassette includes an elongated cassette body of substantially U-shaped cross-section having parallel side walls spaced apart from each other, and a top wall connecting the side walls at their tops and having a forward end formed with a staple driving aperture through which the handle's driving blade can pass. The cassette body has a closed forward end and an open rearward end. A staple guide of substantially H-shaped cross-section is mounted coextensively on the open bottom of the cassette body to form a coextensive space. The staple guide includes a pair of opposed parallel leg portions which extend from near the open bottom of and toward the top wall of the cassette body. A transverse connecting portion connects the leg portions near their lower ends. The top of each leg portion is spaced apart from the inner face of the top wall of the cassette body. The outer side face of each leg portion is spaced apart from the inner face of the corresponding side wall of the cassette body. A slideable feeder element is engageable with the rearwardmost staple of a staple set charged into the formed space, and a resilient device resiliently urges the feeder element against the closed forward end of the cassette body.
REFERENCES:
patent: 3263888 (1966-08-01), Wandel
patent: 3347439 (1967-10-01), Doherty
patent: 3958738 (1976-05-01), Tremblay
patent: 4546909 (1985-10-01), Ebihara
patent: 4607777 (1986-08-01), Ebihara
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