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A drywall tool filling pump includes a pump head removably attached to the top end of a pump cylinder positioned inside a bucket of drywall mud. Left and right hinge members extend from the pump head. A plunger shaft extends coaxially from the pump head. A lever has a proximal end pivotally attached

A drywall tool filling pump includes a pump head removably attached to the top end of a pump cylinder positioned inside a bucket of drywall mud. Left and right hinge members extend from the pump head. A plunger shaft extends coaxially from the pump head. A lever has a proximal end pivotally attached to the top of the plunger shaft, and is positionable on either side of the pump head. A pair of connecting rods pivotally connect an intermediate portion of the lever to either hinge member. An output port arranged on the pump head may be connected to a variety of automatic drywall tools. A L-shaped mounting bracket has a top end attached to the output port, and extends downwardly for being positioned outside the bucket. A valve cap is attached to the lower end of the pump cylinder by bolts that extend through longitudinal slots on the cylinder, so that the valve cap may be easily removed by loosening the bolts, and sliding them out the slots. The lever may be easily configured for either right-handed or left-handed use by positioning it on either side of the pump head, and attaching the connecting rod to the corresponding hinge member with a removable pin. In the course of a workday, a worker may switch the position of the lever so as to exercise both arms evenly.

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[ I claim:] [1.] A drywall tool filling pump adaptable for either right-handed use or left-handed use, comprising:a pump cylinder adapted to be positioned vertically inside a bucket of drywall mud;a pump head attached to a top end of said pump cylinder, said pump head having left and right sides com

[ I claim:] [1.] A drywall tool filling pump adaptable for either right-handed use or left-handed use, comprising:a pump cylinder adapted to be positioned vertically inside a bucket of drywall mud;a pump head attached to a top end of said pump cylinder, said pump head having left and right sides comprising radially opposite positions about an axis thereof;a plunger shaft extending slidably and coaxially out of said pump head;an output port means attached to said pump head and adapted to be connected to a drywall tool;a vertical mounting bracket having an upper end connected to said pump head intermediate said left and right sides, said mounting bracket being adapted to be positioned outside said bucket;a lever having a proximal end pivotally attached to an upper end of said plunger shaft, said lever being selectively positionable on either said left side or said right side; anda connecting bar having an upper end hingeably attached to an intermediate portion of said lever, and a lower end selectively positionable on said pump head on either said left side or said right, so that when said lever and said connecting bar are positioned on said right side, said lever is operable by the right hand of a worker, and when said lever and said connecting bar are positioned on said left side, said lever is operable by the left hand of the worker.