US2150399A - Noncracking joint covering and finish - Google Patents

Description

March 14, 1939. A. c. BENEDICT 2,150,399

NONCRACKING JOINT COVERING AND FINISH Filed April 19, 1957 INVENTOR. NrHo/VY @EA/.ep T.,

` A TTORN E Y.

Patented Mar. 14, 1939 UNITED STATES PATENT oFFIcr.

NONCRAGKING JOINT COVEMNG FINISH 3 Claims.

-This invention has to do with a joint covering andfinish which is designed primarily for iuse in the building arts, and is concerned particularly with the type of joint illustrated and described in my application Serial Number .89,7419 which is to -be issued April 20, 1937, under Patent Number 2,078,049.

A joint of the type with which this invention is concerned is ordinarily found in a wall-like structure made of a plurality of panels or slablike members arranged with their outer surfaces in substantially the same plane to form a'sup- Iporting structure for a coating or finish.

Due to such conditions as 'temperature changes, moisture changes', drying out 'of the `material from which the panels are made, or the setting up of stresses on the panels incident to building "construction or subsequent settling, it is important that the edges of these panels be relatively movf able, and this invention is intended to accommodate such movement. Ordinarily a supporting or weight carrying element is also included in the vbuilding structure at the adjacent edges ,of the panels, so as to support these structural parts.

-In my above 'identified patent application various types of joints are illustrated in which provision is made for preventing adhesibn of the finishing coating toy the panels along Zones at the yedges of the panels, whereby strains and stresses incident to displacement of the 4panels, arev distributedover a relatively Wide area of theflni'shing material.

y The present invention is adapted to tprovide a continuous surface unbroken by ridges or sags', due to the use of a plurality of panels, by providing a coating and under structure therefor which comprises a panel and a resilient elastic porous member arranged adjacent thereto, seas to Vform a comparatively smooth surface for the coating.

A coating of the Ageneral character 'disclosed inl my copending application is then used .to cover this surface and provide the continuous Vsurface desired.

.The resilience, elasticity and porosity `of this member in combinationwith my said'coatingthen permits various movements of my underlying panels without damaging the outside surface ,of my coating. This result follows because the resilientelastic and porous `member is able to withstand deformation without imparting to the coating the full fracturing influence which would be found otherwise when adjacent panels were moved; my described coating works in conjunction with this cushioning eiect to prevent the iullmovementof theunder structure from cracking the outer surface of the coating.

A more limited object is to facilitate the lconstructiOn of 'a wall-like surface having the" characteristics abovedescribed by maintaining the resilient 'elastic ahdporous Vmember'in proper positin 'by 'the frictinal'vor abutting contact of adjacent panels. A

"The invention, therefore, comprises a linished and covered joint in which an Yunderv structure is formed of a panel vand-an adjacent resilient elastic porous member, and the two vare thencovered with a coating" of flexible elastic finishing mate'- rial such as' herein 'describedjthe said coating is vbonded to the panel and'resilient'elastic porous member. For a full and more complete understanding of the invention, reference may be had to the following description and accompanying drawing, wherein Figure 1 is a section taken through a joint made in accordance ywith ,thisinvent'iom Figure 2 isa view similar to Figure 1 of a modified form,

Figure 3 is another similar sectional showing of vstill another modification,

Figure 4 is another vifw taken on the same relative plane, butI of a further modiflcatien; likewise 'I "Figure 5 is a sectional showing of another modified form, Y

Figurer` 6Y` develops another modication, and Figure 7 is a similar'viewy of still anothermodied form. 'n Referring now tothe drawing, wherein like reference characters denote corresponding parts, a pairv of ,building panels are shown at I0 and I'I :'ashaving edgesI 2 and I3 which are spaced apart. These panels I0 and `II ,may be of any suitable composition which khas met with approval for the particular building purposefit is designed. Panels suchA as theseare well-known to those fskilled in the structural arts. v In the` form of the invention shown in Figure 1, itis notable that the edges I2 and I3 are substantially perpendicular to the broad faces 'of `the panels IIland I I.` Interposedbetween these edges I2v and I3 isfa supporting-body designated I 4,'which is designed to completely fill up the 'spacefbtween the edges IZ'and I3. `This supporting body should be of a resilient elastic porous material having the ability to permit of relative displacement between the panelsl Illy and.

I I. As a material for the supporting body I4 an appropriate cork composition will provide the deother purposes.

sired results. A Vsupporting 'stud or beam such as is shown at I5 of Figure 3 is preferably placed under supporting member I4 and the adjacent edges of panels 'I0 and II.

A finishing coating is designated I6, and is` shown as applied continuously over the panel I0, supporting body I4 and panel I I. This coating or finishing material should have the properties of elasticity and flexibility to the degree necessary to accommodate an appreciable amountof movement between the edges of the panels ID and I I. Due to the spacing of the edges I2 and I3 a comparatively wide distance apart thestresses engendered by such relative displacement will be distributed .over a corresponding area of the finishing coating I6.

The coating or finishing material of the type described in my said copending application is preferably used. One example of a composition of such a finishing material is found in said ap'- plication as follows, and it is noted that the proportion of the material is given by weight:

Fibrous asbestos pounds-- 3 Ground mineral do V 1 Elastic varnish fluid ounces 45 MineralY spirit do\ The varnish used in this .example is about 50% volatile by volume, and the asbestos used contains fibres of substantial length. The Vground mineral may be fine or relatively coarse for texturing or It is adapted to be applied in a rather thick coating o gli or more.

Referring now more particularly to Figure 2, a slightly modified type of joint is shown in which the edges of the panels I0 and II are disposed at an acute angle with respect to the surface which receives the finishing coating I6. 'I'hese edges are designated I'I and I8, and are effective to provide a space between the panels. which is narrower at the top edges at the surface vto which the coating I6 is applied than at the bottom. A resilient elastic supporting body I4 corresponds in shape to these inclined edges I'I and I8, and fills up the space therebetween.

the edges I2 and I3 of the panels Ill and II are perpendicular tothe broader surfaces of these panels, but the supporting body I4 engages only the edge I2, being spaced from the edge I3. This free space between the edge I3 and supporting body I4 imparts the capability of the panels I0 and I I to flex more readily.

It is notable that in this arrangement a supporting structure I5 is employed to maintain the supporting body I4 in position between the edges I2 and I3. It is also important to note that a small amount of the finishing material I4 has entered into the space between the edge I3 and body I4, as shown at I9.

Referring now more particularly to Figure 4, the panels I0 and II arershown as having the usual right-angular edges I2 and I3, while the supporting body I4 is shown as having inclined edges 20 and 2I that are spaced from the edges I2 and I3 respectively. It is notable that the body I4 is wider at the top than at the bottom, and that the finishing material I6 enters in the space between the edges I2 and 20, as shown at 22, and I3 and 2|, as shown at 23. The supporting In the form of the invention shown in Figure 3,

structure I5 is'also shown for the purpose of maintaining the supporting body I4 in position.

Referring now more particularly to Figure 5, a resilient elastic porous panel, such as a cork composition, is shown at 24- as having an edge 25 that is spaced from an edge 26 of a panel 2'I. The finishing material I6 is applied over the panels 24 and 21 somewhat enters the space between the spaced edges 25 and I6.

A somewhat similar arrangement is shown in Figure 6, in which the edges 25 and 26 meet; the relative movement between the panels being accommodated by the porous and resilient structure of the cork composition panel 24.

In Figure 7 the panels III and II are shown as having theedges I2 and I3 spaced a slight distance apart. Ihe upper surface of the panel I0, which isdesignated 28, is cut away to provide a recess 29`in which is positioned a supporting body 3E! of the resilient elastic porous material, such as a cork composition. This body 3D extends over into the spacebetween the edges I2 and I3 to engagement with the edge I3. A finishing material I6 is applied continuously over the surfaces of the panels I0 and II and the body I3.

While preferred specific embodiments of the invention are hereinbefore set forth, it is to be clearly understood'that I am not to be limited to the exact constructions illustrated and described, because various modifications of these details may be provided in putting the invention into practice within the purview of the appended claims.

I claim:

1. In building structure adapted to provide a continuous surface, an under structure for a coating comprising a panel and a resilient elastic porous member arranged adjacent thereto, and a stable coating of a flexible, elastic finishing material bonded to! said panel andvsaid member, said coating attaining a thickness of alf at the juncture of said panel and member and comprising particles of solidY material, fibrous material, and elastic adhesive material from the class of elastic Varnish.

2. In building structure adapted to provide a continuous surface, an under structure for a coating comprising a panel and a resilient elastic porous member arranged adjacent thereto, and a `coating of a flexible, elastic nishing material bonded to said panel and said member, said coating comprising particles of solid material including a substantial amount of substantially fieXible particles and elastic adhesive material from the class of elastic Varnish. Y

3. In building structure, a finished joint comprising a pair of panels having edges spaced apart, said edges defining a space between the panels which is as narrow at the surface to be coated as it is elsewhere, a member of a resilient elastic porous material interposed between said spaced edges, and a continuous coating of flexible elastic finishing material comprising particles of solid material, fibrous material and elastic adhesive material from the class of. elastic'varnish applied to said panels and over said member and bonded fixedly to the surfaces of said panels at their edges adjacent said member, said'coating attaining a thickness of substantially gli".

ANTHONY C. BENEDICT.

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