US2769578A - Plastic cement applicator - Google Patents

Description

Nov. 6, 1956 J. JOHNSON PLASTIC CEMENT APPLICATOR Filed Dec. 12, 1955 INVENTU/L JOHN JOHNS O N ilnited tates Patent PLASTIC CEMENT APPLICATGR John Johnson, San Francisco, Calif.

Application December 12, 1955, Serial No. 552,351

3 Claims. (Cl. 222-407) The present invention relates to a new and improved article of manufacture, comprising an economically produced and eflicient plastic cement container and applicator, having highly eflicient and improved means adapted to operate as a container and tool to dispense and apply precisely controlled quantities of cement directly onto the job, either broadly on a flat surface or into a comparatively inaccessible and narrow space, to effectively connect and seal against moisture, and to automatically self-seal a dispensing spout, whereby flat surfaces, crevices and the like effectively may be sealed against moisture with a minimum expenditure of time and labor, and the cement constantly retained available for instant service.

The primary object of the present invention is to provide a new and improved article of manufacture comprising a plastic cement container and applicator having improved means adapted to operate as a container, dispenser, and tool in applying a plastic cement.

Another object is to provide a new and improved applicator of the character set forth, having an improved self-sealing dispensing spout adapted to regulate and control the quantity of cement being dispensed or applied.

A further object is to provide an applicator of the type described, having a greatly simplified and economically produced and readily operated construction, and a maximum eificiency.

The improvement comprises the applicator disclosed in the drawings forming a part of the present application, in which Figure 1 is a top plan view of the applicator, disclosing the first step in its formation;

Figure 2 is a similar view, illustrating the second step;

Figure 3 is a broken, partly sectional view of the plastic, impervious envelope, with the pointed dispensing end or spout of the device fully formed; and

Figure 4 is a broken elevation of the dispensing end of the applicator, filled with a cement to be dispensed and applied.

Referring to the drawings, the numeral 2 is used to designate in general a preferably rectangular fiat envelope, of a flexible impervious material, having an open end 4 folded diagonally from one corner thereof and flatly upon the envelope 2 with said open end 4 aligned and matching with an adjacent side end as at 6, thus forming an apex, or pointed spout 8, provided With a plurality of graduated and preferably slanted indicia 10, arranged in regular parallel spaced relation from said spout 8.

A flat, flexible, transparent and adhesive plastic strip or sheet 12 is placed under the folded end of the envelope 2, and with one end parallel with the fold 5, with the opposite end of said strip 12 extended diagonally beyond the opposite side of said open end 4 to permit said opposite end to be folded back over the open end 4, spout 8, and the transverse edge 14 of the envelope 2 which has been thus folded transverse by the diagonal fold 5,

thereby effectively sealing the open end 4, spout 8 and flap or edge 14, as disclosed in Figure 3.

When the envelope 2 is filled with a plastic cement to be dispensed, the end opposite the folded end 5 is closed and sealed, thus rounding the envelope 2 into a cylindrical tube, which reduces the width of the device and also forms a conical end terminating in the dispensing spout 8, which arrangement will facilitate the introduction of said spout into comparatively inaccessible narrow cracks or apertures, and consequently efliciently apply cement therein.

In operation, the tip of the spout 8 is cut off, with knife or scissors, at the first or smallest index or graduation 10, which will provide a small opening from which may be dispensed and applied a narrow, string-like thread of cement for introduction into a comparatively inaccessible aperture or crevice to be sealed. The regulation of hand pressure upon the tube or applicator obviously will control and regulate the quantity and speed of dispensing and application of the cement commensurate with the immediate requirement. Large quantities of cement may be extruded by cutting the spout 8 at successive index lines 10, and flat applications of some width, for flat surfaces, may be provided by turning the opened spout 8 sideways and slanted with the slanted index selected.

After extrusion of cement, the spout 8 is self-sealed by a slight hardening into a tough, resilient plug of the material immediately inside of the spout tip or opening, so that no extra cap or closure is required to retain the plastic quality of the cement within the interior.

It is obvious from the foregoing that the applicator readily operates as a dispenser, applicator, and tool, having improved means adapted to control and regulate the amount of cement required for direct application to the job. Thus the necessity for other tools, trowels, and various equipment at present required in sealing roofs and other leaky cracks and apertures, is eliminated, with a consequent saving of time and labor, and a definite increase in efliciency.

Having described my invention, I claim:

1. In a new article of manufacture, a plastic cement applicator comprising an impervious flexible envelope having an open end folded flatly upon itself from one corner thereof and matching with an adjacent edge of said envelope, and forming a pointed spout aligned with one side edge of said envelope; and a transparent adhesive strip mounted around said folded end and spout and sealing said spout, and said folded end flatly against said envelope.

2. In a new article of manufacture, a plastic cement applicator comprising an impervious and flexible rectangular envelope having an open end folded diagonally from one corner of said envelope, matching an adjacent edge of the same, and forming a pointed spout aligned with said edge; a plurality of graduated indicia on said pointed spout; and a transparent adhesive strip folded around said pointed spout and folded open end and sealing the same flatly against said envelope.

3. In a new article of manufacture, a plastic cement applicator comprising a rectangular envelope of flexible plastic material having an open end folded diagonally upon itself from one corner thereof, with said open end matching an adjacent side edge of said envelope and forming a pointed spout aligned with said side edge; a plurality of slanted and graduated indicia on the apex of said pointed spout; and a transparent adhesive strip mounted around said pointed spout, and around said folded corner and sealing said folded corner flatly against said envelope.

References Cited in the file of this patent UNITED STATES PATENTS 1,070,790 Falk Aug. 19, 1913

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