Selective chamber screwdriver

Claim 1

A multi chambered screwdriver comprising a handle, a stem mounted in front of said handle, said handle being elongated and has a plurality of elongated bores located circumferentially about the handle with a plurality of different size screwdriver blades, one in each bore, said stem being hollow and located centrally to the circumferential bores in the handle, said stem having a rearward enlargement with a single lateral diagonal passageway extending at an angle in relation to the longitudinal axis of the handle with its forward end communicating with the hollow center stem and its rearward end communicating with the forward end of one of the circumferentially located bores in the handle, said rearward enlargement acting to close the forward end of the remainder of said elongated bores in said handle, said handle being rotatable relative to the stem to align the forward end of any one of its circumferential bores with the rearward end of the diagonal passageway of the stem, radially engaging locking structure mounted at the front end of the stem for locking any one of said blades in said stem, whereby when said handle is rotated to align the front end of one of the circumferential bores with the rearward end of the diagonal passageway, the screwdriver may be tipped forward and downward causing the screwdriver blade in the aligned circumferential bore to slid freely under gravity out of its circumferential bore down along the diagonal passageway into the hollow stem until the forward end of the blade projects out the forward end of the stem whereupon the radial locking structure may be rotated to lock the blade in the stem for use, and whereupon by rotating the locking structure in the opposite direction and tipping the screwdriver rearward and downward the blade will slide freely under gravity back into the aligned circumferential bore of the handle, said blades each having projecting lugs along their rearward ends, said radially engaging locking structure also having tapered pointed flanges at rearward end communicating with slots in the locking structure for guiding for guiding the projecting lugs into the slots in the radial locking structure, said blades having rearwardly directed end surfaces perpendicular to the length of the blade, said radial engaging locking structure having lug surfaces movable to abut the rear end surfaces of the blade to provide a positive lock to prevent the blade from sliding rearward in the stem while in use.