2. The invention of claim 1 additionally including cleaning fluid supply means mounted internally of said swab support arm.

3. The invention of claim 1 additionally including cleaning fluid supply means comprising a pressurized cartridge containing cleaning fluid mounted in an axial chamber in said swab support arm.

4. The invention of claim 1 additionally including cleaning fluid supply means comprising a pressurized cartridge containing cleaning fluid mounted in an axial chamber in said swab support arm, selectively operable valve means in the end of said cartridge nearest said swab, valve actuator means operable for opening said selectively operable valve means and conduit means for receiving cleaning fluid from said selectively operable valve when said selectively operable valve means is opened for carrying cleaning fluid to a discharge point at which said fluid is discharged from said conduit means to be received by said swab means.

5. The invention of claim 1 additionally including cleaning fluid supply means comprising a pressurized cartridge containing cleaning fluid mounted in an axial chamber in said swab support arm, selectively operable valve Means in the end of said cartridge nearest said swab, valve actuator means operable for opening said selectively operable valve means, and conduit means for receiving cleaning fluid from said selectively operable valve means when said selectively operable valve means is opened for carrying cleaning fluid to a discharge point at which said fluid is discharged from said conduit means to be received by said swab means, a swab supporting stub shaft having a stem portion on which said swab is attached and a hollow threaded end portion received in a threaded aperture in the first end of said swab support arm, a hollow axial passageway along the length of said stem and said end portion, said valve actuator comprising an abutment at the end of said passageway engageable with said valve means for opening said valve upon movement of said threaded end portion to an inward position by rotation of said swab supporting stub shaft and a plurality of radial openings in said swab stem portion communicating with said axial passageway whereby cleaning fluid discharged into said axial passageway passes outwardly through said radial openings into said swab supported on said stem portion.

6. The invention of claim 1 additionally including cleaning fluid supply means comprising a pressurized cartridge containing cleaning fluid mounted in an axial chamber in said swab support arm, selectively operable valve means in the end of said cartridge nearest said swab, a threaded aperture in the end of said swab support arm axially outward from said valve means, a swab supporting stub shaft comprising a stem on which said swab is mounted and an externally threaded cylindrical end portion of larger diameter than said stem having a radial face extending outwardly from its juncture with said stem and being receivable in said threaded aperture of said swab support arm for movement axially inwardly to a position adjacent said valve means, abutment means on the end of said cylindrical lug engageable with said valve means and comprising said means for operating said valve means, said abutment means being operable upon movement of said cylindrical lug inwardly to its innermost position in said threaded aperture, conduit means comprising a plurality of conduits extending from adjacent said abutment means through said cylindrical lug and terminating in said radial face of said cylindrical lug portion for discharging cleaning fluid onto the end of said swab upon the opening of said valve means.

7. The invention of claim 6 wherein said pivotal connector means comprises a flat tongue centrally positioned extending across the axis of said pivotal swab support arm on the end of said swab support arm opposite said threaded aperture, a slot in the end of said rigid offset arm defined by first and second spaced side shoulders, aligned apertures in said spaced side shoulders and in said tongue and a pin extending through said aligned apertures.

8. The invention of claim 7 wherein the end of said handle member opposite said rigid offset arm is of enlarged diameter and includes a knurled friction enhancing surface.

9. The invention of claim 8 wherein said stem portion includes radially extending lugs extending outwardly into said swab but which can be manually grasped by a user for rotating said stem portion to move said cylindrical end portion inwardly or outwardly in said threaded aperture in the end of said support arm to open and close said valve means.

10. The invention of claim 5 wherein said pivotal connector means comprises a flat tongue centrally positioned extending across the axis of said pivotal swab support arm on the end of said swab support arm opposite said threaded aperture, a slot in the end of said rigid offset arm defined by first and second spaced side shoulders, aligned apertures in said spaced side shoulders and in said tongue and a pin extending through said aligned apertures.

11. The invention of claim 10 wherein the end of said handle member opposite said rigid offset arm is of enlargEd diameter and includes a knurled friction enhancing surface.

12. The invention of claim 11 wherein said stem portion includes radially extending lugs extending outwardly into said swab but which can be manually grapsed by a user for rotating said stem portion to move said cylindrical end portion inwardly or outwardly in said threaded aperture in the end of said support arm to open and close said valve means.

13. The invention of claim 1 wherein said offset arm and said rigid handle member are unitarily formed and said offset arm includes an intermediate arcuate portion curving outwardly from the end of a linear portion, said linear portion extending from said handle member and wherein said offset arm terminates in a rounded outer surface end termination.