Patent ID: 7828182

Claim:
A stapler comprising: a base comprising a perforation bar arranged in a rear portion the stapler to selectively perform perforating operation; a magazine rack mounted on the base; a primary staple magazine receiving and containing primary staples, the primary staple magazine comprising a primary staple pusher to continuously forcing the primary staples forward to a front end portion of the primary staple magazine; a secondary staple magazine arranging outboard and substantially surrounding the primary staple magazine and fixed to the primary staple magazine, the secondary staple magazine receiving and containing secondary staples therein, the secondary staple magazine comprising a secondary staple pusher to continuously forcing the secondary staples forward to a front end portion of the secondary staple magazine, the second staple magazine being slidably received in and retained by the magazine rack; a drive blade fillister arranged at a front end of the magazine rack and movably supporting primary and second drive blades; a staple selector mounted to the front of the secondary staple magazine and movable between first and second positions for selecting the primary and secondary staples; a drive blade selector arranged above the front end portions of the primary staple magazine and secondary staple magazine for selectively driving the primary and secondary drive blades toward the primary and secondary staples, respectively; and a cover arranged above the base and the drive blade selector and carrying the perforation bar and movable to depressing the perforation bar and the drive blade selector to selectively carry out the perforation operation and selectively driving the primary and secondary drive blades.