US427174A

US427174A - Minor c

Info

Publication number: US427174A
Authority: US
Publication date: 1890-05-06
Anticipated expiration: 1907-05-06

Description

(No Model.)

M. O. KERBAUGH.

ROOFING FABRIC.

UNITED STATES PATENT MINOR C. KERBAUGH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO J. WALTER DOUGLASS, OF S AME'PLAOE.

ROOFING FABRIC.

SPECIFICATION forming part of Letters Patent No. 427,174, dated May 6, 1890.

Application filed December 3, 1889- delphia and State of Pennsylvania, have invented a certain new and Improved Roofing Fabric, of which the following is a specifica tion.

My invention relates to the manufacture of a silica-coated roofing fabric provided with a plain-surfaced marginal edge.

Heretofore in the manufacture of roofing fabrics of the various methods employed probably the most generally practiced one is that of compressing together two or more layers or sheets of tarred paper or felt with an external lower layer or sheet of burlap and an external upper layer or surface of sand, or a central sheet of burlap coated on both sides with tar and having compressed thereto an under sheet or layer of tarred or untarred felt or paper and an upper sheet of felt or paper provided with an upper surface or coating of sand or gravel.

The principal object of my invention is t provide a one or more ply silica-coated roofing fabric having a plain-surfaced marginal edge on either the right or the left side of each sheet and arranged so that the opposing side of a silica-coated sheet may be laid onto the plain surfaced marginal edge of said coated sheet, and thus form a perfect union of the one sheet with the other, and soon in regular succession; and, moreover, by laying the several plain-surfaced marginal-edged coated sheets in such manner not only a perfectly uniform surface or roof is obtained, but a roof presented which will last a long time, as the sheets are so united as to secure absolutely water-tight joints and solid or compact unions of the one sheet with the other in contradistinction to coated sheets without plain-surfaced marginal edges, as heretofore used for roofing purposes, and in which in the laying of them it has been customary to bring the side edge of one sheet flush with the side edge of the other, and placing a strip of tar-paper first beneath the sheets and then running pitch along the crack or space between the two side edges of the sheets; but owing to sud= $erial No. 332,372. (No specimens.)

den changes in temperaturethat is, extreme heat or excessive cold-the tar either ran or the sheets gaped, and thus in a short time the roof was branded as a worthless leaky roof, necessitating its removal and the substitution ofanother type or kind of roof therefor.

My invention consists, essentially, in the production of a one or more ply silica-coated roofing fabric provided with a plain-surfaced marginal edge.

The nature of my invention will be more fully understood taken in connection with the accompanying drawings, forming part hereof, and in Which Figure 1 is a perspective view of a roll, partially opened out, of a two-ply silica-coated roofing fabric provided with a marginal edge and embodying the particular characteristic features of my invention; and Fig. 2 is a similar view of a three-ply roll of said silica-coated roofing fabric with a plain-surfaced marginal edge.

Referring to the drawings, a is a sheet or layer of felt or paper coated or saturated with tar or pitch.

- b is the coating of silica distributed over the upper surface of the one or more sheets or layers of tarred paper or felt adjacent to the plain-surfaced marginal edge 0 on either the right or left side thereof. The silica is preferably of large or coarse grain, distributed over the upper tarred surface while in a heated condition in any convenient manner.

In Fig. 2 is illustrated a three-ply fabric having the upper surface coated with silica adjacent or contiguous to the marginal edge 0 thereof.

The mode of making a roofing fabric embodying the particular features of my invention is as follows: The two or more sheets or layers of felt or paper are coated with hot tar or pitch in order to permit, preferably, the same to permeate or saturate the body of the sheets or layers of felt or paper, and while her or apartment the tar coated and saturated sheets or layers are conducted along a traveler or apron in any preferred manner, and while maintained in said heated condition the silica is distributed over the surface of the maintained in a heated condition in a chamup for use.

The particular features of novelty and advantages incident to the use of a sheet of I roofing fabric with a plain-surfaced marginal edge is that the sheets may be readily united with one another by allowing the bottom of the coated side of one sheet to lap onto the plain-surfaced marginal edge of the other coated sheet, which not only insures a tight joint, but a most efficient union of the one sheet with the other, whereby a perfectly smooth and uniform roof is presented throughout. Furthermore, a roof so formed is less expensive, both as to time and labor, owing to the fact that the sheets are prepared beforehand and supplied for their intended purposes.

Having thus described the nature and objects of my invention,what I claim as new, and desire to secure by Letters Patent, is

1. As a new article of manufacture, a roofing fabric composed of one or more tar or silica coated sheets of felt or paper having a strip along the edge thereof free from tar or other material, substantially as an d for the purposes set forth.

2. As a new article of manufacture, a roofing fabric composed of two or more united tar coated and saturated sheets of felt or paper with silica distributed over and embedded in the upper surface and a strip along the edge of the fabric free from tar or other material, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my signature in the presence of two subscribing witnesses.

MINOR O. KERBAUGH.

Witnesses:

GEo. W. REED, THoMAs M. SMITH.