Multi-purpose plastic dispenser

Claim 2

A multi-purpose dispenser such as a caulking gun including a unitary molded plastic frame with two end members and a connecting means, which frame is adapted for receiving a caulking cylinder or the like therein, a drive screw with a pressure plate operatively connected thereto at one end, and a handle means secured to the other end of said screw, one of said end members threadedly engaging said screw and said caulking gun being characterized by said screw having two longitudinally spaced sections of reduced area to make said screw releasable from said one end member when said screw is operatively engaged therewith and is moved to bring one of said sections into a preestablished release association with said one end member, said one end member having an opening therein in an upper portion thereof connected to a thread engaging aperture therein by a release slot, said thread engaging aperture engaging said screw and retaining it in said aperture, said screw being of reduced width at said longitudinal sections thereof, said release slot being sized to pass said one longitudinal section therethrough when said reduced width is aligned with said release slot, said drive screw having a thread thereon extending from said handle means and to said pressure plate and being engaged with said thread engaging aperture to be only axially movable for a major portion of its length.

Claim 3

A dispenser as in claim 1 where said frame is of a cradle-like shape that is open over a circumferential arc to enable a caulking cylinder to be moved into seating engagement with said frame.

Claim 4

A caulking gun including a cradle-type frame with two end members and a connecting means which frame is adapted for receiving a caulking cylinder, a threaded drive screw with a pressure plate rotatably and operatively connected thereto at one end, said drive screw having its other end protrude from said frame, said pressure plate being adapted to engage a caulking cylinder closure for moving same longitudinally of the cylinder to expel its contents, and a handle means on the other end of said screw which end is positioned externally of said frame, one of said end members threadedly engaging said screw and retaining said screw in engagement therewith, and said screw having two longitudinal sections of reduced area to make said screw releasable from said one end member when engaged therewith and either of said longitudinal sections is moved into association with said one end member, said one end member being of a thickness as to operatively engage the thread of said screw, said one end member having a hole therein, said one end member has a screw release opening formed therein connecting to said hole by a release slot, said screw having two flat parallel sides at said longitudinal sections capable of passing through said release slot which will not pass other portions of said screw, said drive screw having a thread thereon extending from said handle means to said pressure plate and being engaged with said thread engaging aperture to be only axially movable for a major portion of its length, but being releasable from said one end member hole by movement radially away from its axis when said screw parallel sides and said release slot are in alignment.

Claim 5

A caulking gun including a cradle-type frame with two end members and a connecting means which frame is adapted for receiving a caulking cylinder, a threaded drive screw with a pressure plate rotatably and operatively connected thereto at one end, said drive screw having its other end protrude from said frame, said pressure plate being adapted to engage a caulking cylinder closure for moving same longitudinally of the cylinder to expel its contents, and a handle means on the other end of said screw which end is positioned externally of said frame, one of said end members threadedly engaging said screw and retaining said screw in engagement therewith, and said screw having two longitudinal sections of reduced area to make said screw releasable from said one end member when engaged therewith and either of said longitudinal sections is moved into association with said one end member, said one end member being of a thickness as to operatively engage the thread of said screw, said one end member having a hole therein, said one end member has a screw release opening formed therein connecting to said hole by a release slot, said screw having two flat parallel sides at said longitudinal sections capable of passing through said release slot which will not pass other portions of said screw, said drive screw having a thread thereon extending from said handle means to said pressure plate and being engaged with said thread engaging aperture to be only axially movable for a major portion of its length, but being releasable from said one end member hole by movement radially away from its axis when said screw parallel sides and said release slot are in alignment.