US1813225A - Plaster anchor - Google Patents

Description

Patented July 7, 1931 UNITED STATES ISAAC A. BAUM, F CHICAGO, ILLINOIS PLASTER ANCHOR Application led September 6, 1929. Serial No. 390,760.

some means be provided for adequately and certainly anchoring plaster to the metal surfaces. This is made necessary by the fact th at the plaster does not adhere firmly to, metal surfaces and by the fact thatrth'e vibration and jars incident to the closing of doors tends to cause cracks and loosening of the plaster at its junction with the frame unless some adequate anchoring means is provided.

Preferably means should be provided that will permit the plaster to project through the metal frame into contact with the surface of the wall. If the wall is composed of tile or brick, the adherence of the plaster thereto will form a bond or anchor although it will provide no adequate anchoring means directly to the frame. In the bowed strip anchor disclosed in my prior application above Y identified, a satisfactory anchoris provided but some difficulty is experienced where workmen do not trowel the plaster sufficiently to insure a flow of the plaster beneath the' loo Iii the construction here disclosed this dif ficulty is avoided and manufacturing is made equally simple. A direct opening from the plaster space is provided to the face of the wall and the angular position of the strip insures an adequate anchor ofthe plaster to the metal part. I f Y The invention will be more readily understood by reference to the accompanying drawing in which the figure isa perspective lview of a portion of awall to whichla frame having my improved anchor has been applied. In the drawing, a frame is shown as of generally channel shape having a web 10 constituting a j amb and side flanges 11 that lie alongside of ka tile wall 12. A plaster ter- 50 mjnal strip having a base 13 isl welded to a tion.

plaster space to permit plaster to enter and to contact with the wall. f

side flange, the perpendicular portion 14 with its rebent margin 15 constituting a plaster finish member. yIn the flanges 11, I strike out pairs of tongues 16'-17, the tongues remaining attached' to the metal along their longitudinal dimension and being inclined inwardly toward each other. By this construction the space between the tonguesv is directly open to the plaster space and plaster f will readily enter the space and contact with the face of the tile.

As a means for anchoring the frame into the wall I providewire members 18 having hooks19 on their ends adapted toy enter the openings formed by striking out the tongues.

Although I prefer to construct the anchoring tongues in pairs as shown, it will be apparent that single tongues will function in a similar manner, the tongues at any case preferably partly overlying the openings formed by striking them out. y It is apparent also that the tongues may be arranged transversely instead yof longitudinally, the arf rangement shown being preferred as the tongues serve to stiifen the frame rather than weaken it.

These and other modifications are considered to be within the spirit of my inven- I claim: 80

1. In a frame for wall openings, the combination of a metal member Yhaving portions .Y adaptedy to lie alongside of the-wallv and to receive plaster thereon, and flat strips struck out of the metal portions and projecting in a line other than perpendicular to the plane of the portions, the space formed by striking out the strips being directly open to the y 9o 2. In a frame for wall openings, the combination of a metal member having portions adapted to lie alongside of the wall and to receiveplaster thereon, and strips struck out fromthe metal portions, the strips being attached to the'metal along their long dimension and being inclined to partly overlie the openingy formed by striking them out.

3. In means for framing wall openings, the combination of a channel shaped frame member the flanges of Which overlie a Wall, and pairs of tongues struck out of the flanges, the tongues of each pair being inclined toward each other Without meeting, t0 leave a 5 direct opening from the plaster space to the Wall beneath.

In testimony Whereoil I have aiXed my signature.

ISAAC A. BAUM.

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