US2085635A - Plaster base or insulating material - Google Patents

Description

June Z9, 193

E. D. CODDINGTON PLASTER BASE OR INSULATING MATERIAL Filed July 2, 1956 my Maa/,6m

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Patented June 29, 1937 PATENT OFFICE gPLAsTER BASE on INSULATING MATERIAL Edwin D. ooaaingtun, Douglaston, N. Y., assignm- 2 to Reynolds Corporation, New York, 'Ny Y., a l @corporation of Delaware` l `Application July 2, 1936, Serial No. 88,662

1 Claim.

This invention relates to plaster bases employed in building construction. More particularly the invention is directed to that type of plaster base comprising a sheet of flexible material bent back and forth to provide a series of folds or undulations and having straight, parallel stiffening wires or rods intersecting the hills and bridging the valleys of the undulations so as to form an anchorage for plastic material which is designed to be applied to one side of Such a type of plaster base is described in my patent No. 1,750,877, dated March l 18, 1930, upon which the present invention represents an improvement.

In the plaster base disclosed in said patent,

a plurality of sheet metal or wooden stays are disposed within the bottoms of certain `of the folds so as to preserve them against collapse and also 4to stiften the sheet in a direction transverse- 20ly of the reinforcing wires.

An important object of the invention is to provide a plaster base of the above character in which the stiffening stays are extended beyond one marginal edge of the sheet so as to overlie 25 an adjacent sheet, and preferably being so ar-` ranged as to intert with the stays of the latter sheet.

Other objects and advantages will become apparent from the following detailed description of 30 a preferred embodiment of the invention, references being had to the accompanying drawing in which:

Figure 1 is a facevew of a sheet of plaster base;

Figure 2 is a perspective view of a joint between two adjacent sheets of plaster base showing the manner in which the sheets are adapted to be assembled in a wall construction; and

Figure 3 is a cross-sectional view on the line 40.3--3 of Fig. 2 through the overlapped ends of a I tlnuous series of regularly-spaced folds or undulations 2 extending in a horizontal direction between the edges of the sheet. Intersecting the l `hills and bridging the valleys of the undulations u 55 at right angles theretois a series of straight,

(Cl. l2-116) spaced, parallel metal wires or rods 3 which extend crosswise of the sheet.

These wires reinforce the sheet in a Vertical direction andl in order to stiften the sheet in a horizontal direction a plurality of light, sheetI metal stays 4 of generally U-shaped cross-section are disposed within alternate valleys uponl the plaster-receiving side of the sheet and beneath the Wires 3. These stiifening stays extend from a position flush with one margin la of the sheet to a position beyondits opposite margin lb so as to overlap an adjoining sheet. The upstanding flanges of the U-shaped stays are Welded or otherwise rigidly secured to the overlying wires 3. For imparting a better heatinsulating effect, the surfaces of the sheets which face the dead air space within the hollow walls or partitions of a building (that is, the sides of the sheets opposite those which receive the plaster coating) are covered by a bright,

f heat-reflective material 5, such as aluminum foil.

The wires 3 terminate even With one edge Ic of the sheet and are extended a substantial distance beyond its opposite side Id, as best indicated in Fig. 1. The purpose of this is to obtain sufcient overlap of the wires with respect to adjoining sheets of the plaster base to avoid cracking of the plaster adjacent the edges of these sheets.

As best indicated in Fig.` 2, the association of the sheets of plaster base with the studding is such that two laterally adjacent sheets A and B are arranged in horizontally staggered relation with respect to a sheet C immediately above them so that the extended portions of the reinforcing wires of the lower sheets bridges the overlap with the upper sheet. These extended ends of the reinforcing wires are terminally directed downwardly toward the plane (i. e., the extended surface) of the sheet, as indicated' in Fig. 2, so as to resiliently engage the adjacent sheet andV to reduce the gap between the wires and the sheet. The vertical side edges of two adjoining sheets are disposed in abutting relation with the projecting portions of the V-shaped stays nesting within the bottoms of corresponding stays of the adjacent sheet. The sheets are alixed to the supporting studding S by nails or tacks 6 passing through the bottoms of the nested stays and backing sheet into the studs. Plaster is applied to the outer faces `of the sheets in the customary manner.

i `As will be apparent, the projecting ends of the .metal stays serve not only to facilitate aligning the sheets of plaster base horizontally in their the contiguous sheet by reason of stresses im parted to the Wall intermediate the studs, and

thereby produce or promote cracking in this locality. Y

Manifestly the invention may be'embodied in other forms than that .describedrabova which latter is to be considered simply as illustrative.

I claim: Y

A reinforced plaster-supporting fabric comprising a sheet of exible fibrous material bent back and forth to provide a series of regularlyspaced undulations, a plurality of reinforcing Wires passing transversely through the undulations, said Wires terminating even with one of the edges of the sheet and being extended beyond the opposite edge of the sheet and lthe ends of said wires being bent toward the 'surface of the'sheet, and a plurality oi sheetmetal stays of trough-shaped cross-section seated within the bottom of certain of the undulations and having their Vside Walls vrigidly aiixed to the reinforcing Wires, said stays terminating even with one edge of the sheet and projecting beyond the opposite edge of the sheet.

' Y EDWIN D. CODDINGTON.

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