Fastener driving tool with adjustable three-part magazine canister assembly

Claim 1

A fastener driving tool comprising a housing, a magazine canister assembly carried by said housing for containing a coiled fastener package, means for feeding successive leading fasteners of the package into predetermined position to be driven and means for driving successive fasteners from said predetermined position into a workpiece, the improvement which comrpises said canister assembly comprising a mounting part, a package supporting part and a package covering part adjustably interrelated with respect to one another so as to contain a selected one of a series of coiled fastener packages, in which the fasteners of each coiled package are of incrementally different lengths with respect to the fasteners of the remaining packages of the series; means for fixedly mounting said mounting part on said tool housing, said package supporting part including a generally circular fastener point engaging bottom wall and integral peripheral wall means extending in an axial direction with respect to the axis of said circular bottom wall from a substantial portion of the exterior periphery of said bottom wall, selectively operable means acting between the exterior periphery of a portion of said peripheral wall means and said mounting part for releasably fixedly supporting said package supporting part on said mounting part in a selected on of a plurality of different operative positions depending upon the nail size of the package which is selected for containment, said package supporting part being displaced with respect to said mounting part in the axial direction with respect to the axis of said circular bottom wall in parallel relation to itself in said plurality of different operating positions, means for supporting said package covering part on said mounting part for movement between (1) an operative position overlying the bottom wall of said package supporting part in any of its selected operative positions so as to contain the corresponding selected package in point supported relation on the bottom wall and within the peripheral confinement of the peripheral wall means of the package supporting part and (2) an access position wherein the space overlying the bottom wall is sufficiently open to permit movement of the package into point supported relation to the bottom wall within the peripheral wall means of said package supporting part, and means for releasably locking said package covering part in said operative position.