초록 ▼

A prefabricated crown molding strip designed to facilitate one-person installation and composed of plaster that is reinforced by two layers of fiber reinforcement, one of bulk fiberglass intermixed throughout the outer portion of the strip and the ornamentation thereon and a second of a sheet of fib

A prefabricated crown molding strip designed to facilitate one-person installation and composed of plaster that is reinforced by two layers of fiber reinforcement, one of bulk fiberglass intermixed throughout the outer portion of the strip and the ornamentation thereon and a second of a sheet of fiberglass netting generally centrally located as a spine in the strip and substantially coextensive therewith. Two side surfaces of the strip are disposed generally in perpendicular planes for engagement with a wall and a ceiling, and have patterns of longitudinally extending ribs and grooves of predetermined depths for facilitating adhesive mounting of the strip, and also facilitating selective removal of plaster to accommodate irregularities on supporting surfaces. Pre-formed nail holes are molded in preselected nailing locations. Also the method of making crown molding strips in steps providing the above characteristics, in a sequence of pours of plaster in fluid state, the addition of the reinforcing fiber, and formation of the patterns of ribs and grooves.

대표청구항 ▼

[ I claim as my invention:] [1.]1. A prefabricated ornamental plaster crown molding strip for installation in a room space along the juncture of a ceiling and a wall, said strip comprising:an elongated body composed primarily of plaster and having:an outer decorative surface for facing into the room

[ I claim as my invention:] [1.]1. A prefabricated ornamental plaster crown molding strip for installation in a room space along the juncture of a ceiling and a wall, said strip comprising:an elongated body composed primarily of plaster and having:an outer decorative surface for facing into the room space and including raised decorative ornamentation thereon, said decorative surface having first and second edges for extending, respectively, along the ceiling and the wall,first and second side edge surfaces for engagement with the ceiling and the wall, respectively,one longitudinal edge portion of said body being offset to form a cornice along one edge of the body,and an inside surface substantially parallel to the outer surface and extending between said side edge surfaces,said body being of a predetermined thickness along its length between said outer surface and said inside and side edge surfaces, apart from said raised ornamentation;a first reinforcing layer of lightweight fabric in the form of netting embedded in said plaster in predetermined spaced relation with said outer surface and with said inside and side surfaces, said netting having side edges close to the side edges of said outer surface;and a second reinforcing layer of lightweight non-woven, long-fiber material intermixed throughout the outer portion of the plaster between said netting and said decorative surface;said first and second side surfaces comprising patterns of alternating longitudinal grooves and ridges, the grooves being of preselected depths less than the spacing of said first reinforcing layer from said first and second side surfaces.