US1404483A

US1404483A - Asbestos shingle

Info

Publication number: US1404483A
Application number: US334826A
Authority: US
Inventors: John A Scharwath; Curt R Burkhardt
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-10-31
Filing date: 1919-10-31
Publication date: 1922-01-24
Anticipated expiration: 1939-01-24

Description

J. A. SCHARWATH AND C. R. BURKHARDT.

ASBESTOS SHINGLE.

APPLICATION FILED 00131. 1919.

l ,401 483. Patented Jan. 24, 1922.

. W, %M/A/ UNITED STATES PATENT OFFICE, 4 JOE-N A. scnmwarn, onemzunrn, Am) CUR'J. n. nunxnanm', on m JERSEY.

Annex, NEW

asnnsros snmenn Specificatioh of Letters Patent. Patent d J 24 92 Application me October 31,1919. Serial No. 834,828.

i Toall whom it may concern f 'Be it known that we, J GEN A. SCHARWATH a citizen of the United States of America, and a resident of Elizabeth, Union County and State of New Jersey, United States of America, and-GURTR. BURKHARDT, a citizen of the United States of America, and a resident of Teaneck, Bergen County, and State .of New Jersey, have invented certain new and useful Improvements in Asbestos Shingles, of which the following, is a specification, reference being had to the accompanying drawing, forming a part thereof.

Our present invention relates to artificial roofing slates or shingles and is in part a division from application, Serial Number 189,405, Patent Number 1,291,395 of Januf ary 14, 1919.

v The objects of the" invention are to provide an article of this character which will be strong, durable, relatively light in weight, ornamental in appearance and which will be free of the glare ordinarily present in roofs of artificial shingle or tile.

A further special objectof the invention is to provide a cement shingle which will be hereinafter described and illustrated in the of tapered formation, but which at the same time will have a substantially uniform thickness of wall and distribution of- Weight throughout its length. 4

These objects we have accomplished by a novel construction and relation of parts,

accompanying drawing, wherein:

Figuresl and 2 are perspective views illus; trating the u per and lowerfaces respectively of one orm of the shingle.

Figure 3 is a transverse sectional view taken through the shmgle at aboutits m1ddle. I

Figure 4 is a perspective view of one of the ossible modifications of the invention.

7 T 'e shingle or artificial slate of this invention comprises a slab of asbestos cement, tapered in thickness from one end to the ot er as indicated at1 5 and provided in the .back thereof, at the lower thicker end, with recesses 01'' depressions 6, said recesses being separated and defined by an interveningrib .or ribs 7, These recesses are shown as exthe tending longitudinally throughout greater portion of the thickened section of the shingle and as tapering in depth from,

the lower to the upper end thereof to accord with the reduced thickness of the shingle and so produce a. substantially even thickness of wall and distribution of weight throughout theshingle. The intervening rib or ribs 7 strengthen and support the reduced or thinned portion of the shingle, reinforcing and preventing breakage of the same. In the first form disclosed, there are only two depressions 6, but in Figure 4 we have illustrated three such -de ressions, with two in tervening ribs 7 and it will be apparent that this number may be increased, if desired.

Preferably, the under side of the shingle at the upper end thereof is left substantially flat as indicated at 8 to provide a firm base or engagement with the roofing support. The shingles are usually laid 'with the upper portions thereof in edge to edge contact and the lower portions of the shingles may be reduced as indicated at 9 to provide spaces between adjacent edges of the exposed portions of the shingles.

Another feature of improvement is the beveling of the lower exposed edges of the shingles as indicated at 10. This not only serves to make the walls at the outer fillets of the recesses of substantially the same thickness as the other walls and to reduce the weight of the lower thickened portion of the shingle but produces a certain ornamental effect which may .be heightened by roughing such beve slate. This beveling of the exposed edges is of further advantage, in that it assists inshedding moisture more rapidly.

The exposeduuppe'r face of the shingle ribbed or corrugated as indicated, for example, in Figure 1 which shows the exposed edges, asshown, to represent for instance the edges of natural surface broken by a plurality of substantially parallel longitudinally extending ridges 11- and by substantially transversely extendingparallel curved intersecting.

ridges 12, the ridges being of comparatively small height or in other words merely of a This form taper from one end to the other, re-

cesses of gradually increasing depth in the u back of the shingle extending throughout the thicker portion thereof to provide a substantially unifornr distribution of weight, the upper surface of the shingle being broken by straight parallel ridges and transverse curved ridges and beveled and roughened exposed edges.

I 2. A press molded asbestos cement shingle having the upper surface thereof broken by substantially straight parallel ridges intercepted by transverse curved ridges and further having beveled and roughened exposed ed es. Y

n witness whereof, we have hereunto set our hands, this 29th day of October, 1919. JOHN A. SCHARWATH. CURT R. BURKHARDT.