US3549448A

US3549448A - Cover to protect window panes and the like during painting

Info

Publication number: US3549448A
Application number: US673393A
Authority: US
Inventors: Joseph L Dearing
Original assignee: Individual
Current assignee: Individual
Priority date: 1967-10-06
Filing date: 1967-10-06
Publication date: 1970-12-22
Anticipated expiration: 1987-12-22

Description

Dec. 22, 1970 J. DEARING 3,549,448

COVER TO PROTECT WINDOW PANES AND THE LIKE DURING PAINTING Filed Oct. 6, 1967 IN VEN TOR.

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' mmq 160/1! Patented Dec. 22, 1970 COVER TO PROTECT WINDOW PANES AND THE LIKE DURING PAINTING Joseph L. Dearing, 1525 W. Crabtree Road,

on, Tenn. 37343 Filed Oct. 6, 1967, Ser. No. 673,393 Int. Cl. B4411 1/52 US. Cl. 156-250 3 Claims ABSTRACT OF THE DISCLOSURE Means to protect framed window panes or the like during the painting of such frames, said means comprising: one or more webs of plastic material covering at least one entire surface of said pane and secured thereto and removable therefrom after painting the surrounding frame.

It is an object of this invention to provide a means by which fully assembled window and door frames as well as framed mirrors, panels or the like, may be fully assembled and the surrounding framework thoroughly painted without the slightest care, attention or skill being directed to confining the application of paint to the framing alone, thereby to avoid smearing or other defacing of the glass or the like comp-rising the particular pane. It is well known that with present labor costs and using conventional brush methods, unless a very high degree of skill is used in painting around window panes, a considerable amount of time must be spent with a razor blade or other scraper in order to remove defacing smears and drops of paint from the window pane itself. This is accentuated when spray painting is done.

As used herein, the terms window frame and window pane shall be taken to include frames or panes of doors, mirrors, panels or the like, and the term pane shall include not only glass but rigid plastic such as acrylic plastic sheets or anything else serving the purpose of glass in a similar relationship. The essential feature is that there be frame surface adjoining a pane surface and that it be desired to paint the frame without devoting time and skill to the avoidance of defacing the pane surrounded by the frame or conversely devoting time and skill to removing from the pane the drops and smears which otherwise normally occur in the course of painting any such framework.

To a lesser degree, the same problem exists in painting around frame screens in which the defacing, although less noticeable, is only slightly less objectionable and for the purpose of this invention the term pane shall be taken to include screens as well as glass, acrylic plastic sheets or the like.

This invention will best be understood from the following detailed description taken in connection with the annexed drawing in which:

FIG. 1 is a perspective view showing a preferred form of the invention;

FIG. 2 is a further perspective view showing how the protective cover or coating is removed from the immediately adjacent painted surfaces;

FIG. 3 is a cross-sectional view of a window frame in which the pane is protected by the improved cover and is shown prior to the painting operation;

FIG. 4 is a view similar to FIG. 3, showing the relationship of the parts after the protective covering is removed;

FIG. 5 is a view similar to FIG. 1, showing an alternative method of securing the protective cover to a pane;

FIG. 6 is a further perspective view showing still another alternative arrangement; and

FIG. 7 is a section on line 7-7 of FIG. 6.

Referring now to FIG. 1, there is shown a pane of glass or the like 10 having on one side a sheet of flexible transparent plastic material 12 and on the opposite side a similar sheet 14. Transparency of the

sheets

12 and 14 will usually be desirable but not essential. The

sheets

12 and 14 are adhered to the pane 10 by marginal adhesive areas 16. These areas 16 may consist of adhesive applied to the glass prior to the application of

sheets

12 and 14 or the adhesive may be marginally applied to the

sheets

12 and 14 or the adhesive may be of the pressure-sensitive type applied either to the margins of the

sheets

12 and 14 or to the margins of the pane 10. In either case, there is complete coverage of either or both sides of the pane L0 as may be desired.

In FIG. 3, the assembly of FIG. 1 is shown mounted in a groove 18 formed in a framing member 20 and secured there by conventional putty 22.

Referring now to FIGS. 2 and 4, a knife 24 is used to sever the plastic sheet 12 along the line defined by either the frame 20 or the putty 22 and then the sheet 12 or, on the obverse side, the sheet .14 is peeled away. Any paint which is accumulated on either of the

sheets

12 or 14 is removed with the sheets and, as particularly shown in FIG. 4, the outer margin of

sheets

12 and 14 remain in the groove held either by the material of the frame 20 or by the putty 22.

In FIG. 5, the

sheets

12 and 14 are shown secured to the pane 10 by bands of

adhesive material

26 and 27. The

bands

26 and 27 may be of pressure-sensitive type such, for example, as cellophane tape. The tape 26, as shown, may be placed anywhere along the mating margins of the pane 10 and the

sheets

12 and 14. Tape 27 is shown in the preferred location which is at the corner with the tape overlapping the superimposed margins. In this connection, the use of pressure-sensitive tape is a matter of choice. Heat scalable tape or even separately glued tape could be used just as well. In any case, the end product is the same except that there would be included appropriate portions of

tapes

26 and 27, as well as the portions illustrated in FIG. 4 of

sheets

12 and 14.

As thus far discussed, the invention has been concerned with the application and securement of independent sheets on opposite faces of a pane. In FIGS. 6 and 7, concern is with the formation of a bag, envelope, tube or wrapper, into which a pane may be inserted so that not only the opposed broad faces are covered but also one or more of the edges. Before entering upon a discussion of the numerous alternatives of which FIGS. 6 and 7 merely are broadly representative, it may be well to proceed to an analysis of the requirements of manufacture. Supose, for example, that the customer is a millwork manufacturer who assembles window frames containing multiple panes and wishes to purchase such panes individually precut to a standard size. In that case, the purchaser no doubt would prefer to receive the panes with the plastic already applied by one means or another and requiring only insertion into the frames, puttying and thereafter painting. In this connection, it should be noted that when a pane is finally secured into a frame with the major surfaces of the pane overlaid by well-secured plastic material there has been introduced a considerable safety factor against breakage in shipment and an additional safety factor in that, should breakage occur, the broken glass is pretty much confined within the opposed webs of plastic and is not scattered about to present a hazard either to person or property.

Now, with such a customer, the supplier of the precut pre-protected glass has a number of choices between variations of his own operation. He may, for example, follow the practice indicated in FIG. 1 or that of FIG. 5,

or he may proceed by any of the numerous procedures discussed hereinafter and the choice will be dictated by the cost sheet. For present purposes, it is not an over-simplification to say that the cost sheet is made up only of labor and material. For example, so far as the cost of sheet plastic is concerned, FIG. 1 and FIG. 5 are identical. The cost of adhesive in FIG. 1 will be less than the cost of cellophane tape in FIG. 5, but more square inches of adhesive are required in FIG. 1 than there are required square inches of cellophane tape in FIG. 5.

FIGS. 6 and 7 are intended as a very general representation of the combination of a pane with a form of preformed container. The precise type of container, except from a cost standpoint, is entirely immaterial, that is, whether the container be denominated a bag, pouch, sleeve, envelope or wrapper, does not matter. The point is that when both volume and labor costs are high, it may be cheaper to pay more for a preformed container into which the panes may be inserted by automatic machinery.

In FIGS. 6 and 7, the pane 10 has its margins enclosed by strips 30 which are bent to U-form around the margins and trimmed as at 32 to produce smooth surfaced joints. The exterior surface of the tape 30 may be pressuresensitive adhesive or coated with a glue or the like and superimposed thereon are

sheets

12 and 14 which coact with the tape to form a container. This construction, of course, produces a very snug fit and really constitutes more a wrapper than a container since it is formed about the pane 10 at the time of use. A preformed container such as an extruded plastic sleeve or a preformed bag or envelope would have to be a little more slack fitting in order to accommodate the pane being inserted. Extruded tubes or bags, however, and conventional bags, pouches and envelopes may be manufactured at exceedingly high speed and when the volume warrants, probably the cost sheet would tip in their favor. Usually, in any such case, one edge 10" of the pane 1-0 will be left exposed though this easily can be closed in the case of most containers.

While certain specific forms have been disclosed herein and others discussed, it is not intended to limit this invention to the precise details disclosed but only as set forth in the subjoined claims.

What is claimed is:

1. A method of painting window frames comprising: providing an assembled frame; providing a window pane having at least one of its major surfaces covered with a sheet of flexible, paint-impervious plastic material substantially coextensive with said pane; inserting said pane in said frame and securing the same in place by means overlying the edges of said pane and said sheet; painting said frame; thereafter severing said sheet along the line of its emergence from said securing means and removing the portion defined by such lines of severance.

2. A method as set forth in claim 1, in which said sheet is at least partially adhered to said pane.

3. A method as set forth in claim 1, in which said pane is enclosed in a close-fitting container formed from said sheet.

References Cited UNITED STATES PATENTS 2,400,139 5/1946 Roland l6l203 2,191,367 2/1940 Carothers 16145 2,783,176 2/1957 Boicey 161-204X 2,991,188 7/1961 Wing et al. 1176X FOREIGN PATENTS 614,087 12/1948 Great Britain 117-6 HAROLD ANSHER, Primary Examiner J. C. GIL, Assistant Examiner US. 01. X.R.