Composite waterproof shingle.

Application filed February 5,1913. Serial No. 746,355.

To dll whom it may concern:

. Be it known that I, Charles S. Bird, a citizen of the United States, residing at Walpole, in the county of Norfolk and State •5 of Massachusetts, have invented certain new and useful Improvements in Composite Waterproof Shingles, of which the following is a specification.

My present invention pertains to improve10 ments in composite waterproof shingles, the construction and advantages of which will be hereinafter set forth, reference being had to the annexed drawings, wherein:

Figure .1 is a perspective view of several 15 of the. shingles produced according to my invention laid up; Fig. 2 is a perspective view of the under side of a shingle, the parts being broken away; and Fig. 3 a similar view showing the parts partially separated. 20 The object of the present invention is to produce a paper shingle having a butt materially thicker than the opposite end thereof, the butt presenting an unbroken surface and being of a thickness sufficient to form 25 the shadow effect which is essential to a commercial article.

The shingle may be said to comprise two sheets, an outer and an inner one, the outer sheet being materially longer.than the in30 ner and comprising the main body 1 and an underlying portion 2, while the inner sheet comprises an upper section 3 and a relatively short butt section 4. Both sheets, as will be noted, are folded upon themselves 35 and at the butt there are four thicknesses of material, while throughout the lower portion of the shingle there are three thicknesses, a single thickness being present at the upper portion of the shingle.

The various parts of the shingle will be formed of.suitable waterproof paper or similar material, and will be secured together under pressure by a suitable cementitious substance, which is preferably water-repel4 5 lant in its nature.

While the members 2 and 3 have been shown of the same length, it will be readily appreciated that they may be made of different lengths so as to produce a shingle 50 which will taper more gradually from the upper to the butt end thereof.

As will be noted upon reference more par- I ticularly to Fig. 1, the butt end of the shingle presents no open seams or joints and consequently water cannot enter between 55 the layers thereof which, of course, if the water did enter, would cause the layers to separate in freezing weather. Moreover, the layers cannot separate under the action of the sun and the shingle is sufficiently thick 60 and rigid at the butt end to prevent the wind from lifting the shingle, and consequently displacing the same. Again, the thickened end produces a shadow upon the roof, which quality is essential to a commer- 65 cial article, and which is present in a roof made up of the ordinary wooden shingles.

The construction is at once simple and yet effective, and is superior to paper shingles which have hitherto been suggested, 70 wherein the shingle is made up of a series of superposed sheets of paper, presenting at the outer end various joints or seams, which joints or seams are objectionable in that they open up under the stress of weather. 75