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An apparatus for rapidly refilling a dry wall cement dispensing tool from a dry wall cement-filled bucket containing a thick-walled, heavy, metal pump tube for submerging into the dry wall cement contained therein, all of a weight to provide the pump tube with a low center of gravity when set in the

An apparatus for rapidly refilling a dry wall cement dispensing tool from a dry wall cement-filled bucket containing a thick-walled, heavy, metal pump tube for submerging into the dry wall cement contained therein, all of a weight to provide the pump tube with a low center of gravity when set in the bucket of dry wall cement, a cement-moving piston attached to the pump rod for reciprocal motion inside the pump tube, a thin-walled, light weight transfer device lighter in weight than the pump tube, extending outward from the aperture top end of the pump tube and in hydraulic communication therewith including a nozzle device for conveying the cement from the heavy pump tube into the cement dispensing tool, and a thin-walled, light weight pneumatic rectilinear reciprocating device lighter in weight than the pump tube, mounted above the tube of a size easily balanced by hand, interconnected the pump rod and including an actuation valve, for sequentially and rapidly raising and lowering the piston in the heavy pump tube to rapidly fill the dispensing tool, wherein the combination of the heavy pump tube, light weight transfer device and light weight reciprocating device provides a low center of gravity to the apparatus to allow it to be steadied in the bucket of cement.

대표청구항 ▼

Apparatus for rapidly refilling a dry wall cement dispensing tool from a dry wall cement-filled bucket comprising: a) a thick-walled, heavy metal pump tube having an open bottom end and an apertured top end of a length slightly exceeding the depth of the dry wall cement bucket for submerging into th

Apparatus for rapidly refilling a dry wall cement dispensing tool from a dry wall cement-filled bucket comprising: a) a thick-walled, heavy metal pump tube having an open bottom end and an apertured top end of a length slightly exceeding the depth of the dry wall cement bucket for submerging into the dry wall cement contained therein; b) a pump rod axially positioned inside said heavy pump tube and arranged for reciprocal movement therein; c) a foot valve, located at said open bottom end of said pump tube, including a valve body having formed therethrough a first plurality of apertures through which the viscous cement is pumped, a screen located therebelow for preventing passage of lumps of cement, and a valve disk, of a size sufficient to close over said apertures, spaced above said valve body for movement against and away from said apertures, said foot valve, said valve body and said valve disk of a weight to provide said pump tube with a low center of gravity when set in the bucket of dry wall cement; d) a cement-moving piston attached to said pump rod for reciprocal motion inside said pump tube and having formed therethrough a second plurality of apertures and a piston disk, slidingly mounted on a sleeve, above said apertures, for reciprocal movement against and away from said apertures for, on an upward stroke of said piston, simultaneously closing over said second apertures, to prevent passage of cement therethrough and to force cement above said piston in said tube out through said apertured top end of said pump tube, and raising from said first apertures for drawing in below said piston an inventory of new cement from the bucket, and on a downward stroke, simultaneously raising said piston disk from said second apertures, to allow passage of cement therethrough, and closing said valve disk against said first apertures to prevent passage of cement therethrough and passing said new cement from below said piston through said second apertures to a position above said piston; e) thin-walled, light weight transfer means, lighter in weight than said pump tube, extending outward from said apertured top end of said pump tube and in hydraulic communication therewith including nozzle means for conveying the cement from said heavy pump tube into the cement dispensing tool; and, f) light weight pneumatic rectilinear reciprocating means, lighter in weight than said pump tube, mounted above said tube of a size easily balanced by hand, interconnected to said pump rod and including an actuation valve, for sequentially and rapidly raising and lowering said piston in said heavy pump tube to rapidly fill the dispensing tool; g) wherein the combination of said heavy pump tube, light weight transfer means and light weight reciprocating means provides a low center of gravity to said apparatus to allow it to be steadied in said bucket of cement.