US1510233A - Plaster-receiving board - Google Patents

Description

Sept. 30 1924.

o. D. MCFARLAND PLASTER RECEIVING BOARD Filed Dec. 21. 1921 Patent Sept., 3, H924..

iaiaraa OWEN D. MUFARLAND, OF CHICAGO, ILLINOIS, SSIGNOR O'F ONE-HALF T0 l" t CUMFER, F CHICAGO, ILLINOIS.

BLASTER-RECEIVING BOARD.

Application filed December 21, 1921. serial no. 523,875.

v To all whom t may con/cem.'

Beit known that I, OWEN D. MoF'AiiLAND, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new andl useful Improvements in Plaster-Receiving Boards, of which the following is a specification.

The invention relates to improvements in, plaster-receivin board. i

One of the o jects of the invention is to rovide a plasterreceiving board reenforced by a metal fabric and in which the metal fabricA is hermetically sealed from atmospheric influences after the plaster has been applied. I

Another object is to provide an impervious waterproof backing for a plaster receiving reticulate metal fabric in which the fabric is primarily cemented to the backing before its application to a wall.

Another object is to provide a reticulate corrugated metal fabric and a saturated waterproof backing sheet to which the fabric is cemented by a suitable cementitious plastic, prior to application of plaster to prevent buckling or warping of the fabric and to protect it from rust.

A more specific object is to provide a reenforced plaster-receiving board in which `parts of the mesh of an ex anded metal sheet are embedded in a coating of plastic asphalt overlying a saturated waterproof foundation sheet, leaving plaster-receiving o enings in the fabricated metal within willich to receive and hold the subsequently ap lied plaster. j

nother object is generally to improve structures of this character.

Other objects and advantages will hereinafter appear from a considerationof the following description when taken in conjunction with the drawings, wherein Fig. 1 shows a plan view of a fragmentl Fig. 4 shows a preferred form of structure in which the metal fabric is corrugated. In a/ll the views the same reference characters are employed to indicate similar parts.

The foundation sheet 10 may well be a sheet of roofin material consisting of felt impregnated with a mobile compound of an asphaltic nature to render the sheet impervious to moisture and substantially weatherproof. Overlying the sheet 10 is a relatively thin coating 11 of plastic asphalt into which is partially embedded a sheet of reticulate metal fabric 12. In Fig. 2 I have shown the reticulate metal fabric to be of the character known in trade as expanded metal. The sheet 12, of reticulate metal, may first be coated with a relatively thin solution of an asphaltic nature and, subsequently, part of the fabric is embedded in the coating 11 overlying the sheet 10. To produce this eiiect the two sheets are passed thru a pair of rolls 14 and 15 that may be resiliently held by springs 16, or by any other suitable means, for pressing the metal fabric into the underlying coating of limited thickness. The sheet 12 is impressed into the coating to an extent that will leave certain parts of the fabric open, as at 18, to form keys for the subsequently applied plaster 19.

Preferably, the metal fabric 12, wire cloth or expanded metal, may be corrugated, as more clearly shown in Fig. 4, as at 20, the intervening portions 21, of the corrugated sheet, being depressed into the underlying coating 11, until they are, preferably, substantially in contact with the sheet 10. By corrugating the metal sheet a series of ribs are thus formed which very greatly strengthens the article as a whole. When the plaster-receiving sheet is to be applied to studs or rafters of a building, the nails or staples are, preferably, passed thru the portions 21 of the corrugations into the supporting structure. In either form of the structure the metal fabric will be entirely and completely submerged in the plaster 19 and the plastic coating 11, so as to be substantially hermetically sealed and protected against moisture and atmospheric inlluences, thereby preventing rust. The backing sheet 10 also serves as a means for preventing dampness, and cold` air, from passing thru the plastered wall, and furthermore the structure described reenforces the plaster and prevents crackin to a large extent due to the settling of the uilding and adds considerable strength tothe frame structure of the house. A plaster-receiving board of thi's character presents a maximum number of plaster-receiving keys, thereby holding the plaster firmly 1n place and prevents it from falling off in relatively large bodies from the plastered wall or ceiling.

The composite sheet, or article, may be made in definite lengths or a continuously long sheet may be coiled into suitable size rolls for shipment and storage.

Having described my invention what I claim as new and desire to secure by Letters Patent, is l 1. An article of manufacture' comprisn a corrugated reticulate sheet of expande metal; an asphalt saturated sheet of felt and a coating of plastic asphalt of uniform thickness between the sheets to hold the sheets together.

2. An article of manufacture comprisin a sheet of expanded metal fabric; an aspha t saturated sheet and a coating of plastic asphalt of uniform thickness between the sheets in which parts of the metal sheet are embedded.

In testimony whereof I hereunto subscribe my name.

OWEN D. MGFARLAND.

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