US1907990A

US1907990A - Expanded metal corner bead

Info

Publication number: US1907990A
Application number: US574563A
Authority: US
Inventors: Fred A Manske
Original assignee: United States Gypsum Co
Current assignee: United States Gypsum Co
Priority date: 1931-11-12
Filing date: 1931-11-12
Publication date: 1933-05-09
Anticipated expiration: 1950-05-09

Description

May 9, 1933. F, A, MANSKE 1,907,990

EXPANDED METAL CORNER BEAD Filed Nov. l2, 1931 INVENTOR ma/Z7 ATTORNE FEED H. MHA/5K5.

` Patented May 9, 1933` UNITED STATES FRED A. IANSXE, 0F CHICAGO, ILLNOIS, ASSIGNCB TO THE UNITED MATEB G'YISU'M` PATENT ori-ICE C0., OF CHICAGO, ILLINOIS, A CORPCRATIONOF ILLINOIS EXPANDED METAL CORNER BEAD Application led November 12, 1831. Serial No. 574,583.

This invention relates to expanded sheet metal products and has reference more par-v ticula y to angular corner beads with exanded metal wings, said corner beads being adapted to be used in the corners of rooms under a coat of plaster.

-In the manufacture of corner beads, it is common practice to form a bead of metal with wings of expanded metal, the angle 'between said wings bein substantially 90 degrees. .It is desirable that these wings of expanded metal be of increasing stifness near the bead so that if it becomes knecessary to flex the wings on the job slightly to make the corner bead t a corner of a room, the bead will not be distorted out of a straight line. It 1s also desirable that this increasln stiiness of the wings be utilized to prevent reakage of the wings adjacent the bead as the wings are flexed at the job. A Iirm bond between the bead and the plaster is also essential so as to prevent the laster from breaklng away from the bea An object of this invention, therefore, is to provide a corner bead having expanded metal win extending from the bead, the stliness o said wings increasing near the bead .to avoid breakage thereof and to also permit iexlng of the wings without distortmg the bead out of line.

, Another object of the invention is to pro-I vide a corner bead with expanded wings in which a iirm bond with the plaster is secured adjacent the bead; also to improve corner beads in other respects hereinafter specified g Reference is to be had to the accompanying drawing forming a part of this specification,

in which f.

corner of a wall showing the application of p the corner bead,

Fig. 4 isa sectional view through the corner bead taken on line 4-4 of Fig. 2, and

Fig. 5 is a sectional view through the cori ner bead taken on line 5-5 of Fig. 2.

My improved corner bead consists o'a bead 10 which is approximately semi-circular in cross section, and is composed of metal, preferably galvanized iron. A pair of anges 11 extend outwardly from the bead 10, the angle between said flanges 11 being subthe bead 10, the flanges 11 are provided with then expanded to form `diamond shaped meshes 12, bounded by strands 13 and bond sections 14.

One of the salient features of myinvention consists in making strand 15 and bonds 16 adjacent the ilangesv 11 of' substantially greaterlwidth than the strands 13 and bonds 14 near the outer edges of theexpanded metal wings. The bonds 17 immediately adjacent and attached to the unexpanded flan es 11, are also turned outwardly at an ang e to said flanges, as best seen in Fig. 4, which also causes the strands 15 to extend outwardly at an angle to the plane of the expanded metal wing. By making the strands wider and by also turning them partly on edge at an angle, `the ex ended metal wings for about three meshes a jacent the flanges 11, are substantially stiffer 1n character than the outer edges of the wings which are more flexible. As a result, when it becomes'necessary to ilex the ex anded metal wings somewhat in adjusting t e corner bead to suit job conditions, the bead 10 is not distorted out of a straight line. Furthermore, the expanded metal wings are stronger and stiffer adjacent the Jiianges 11 so that they will not break awa `from said flanges. Another important a vantage of turnin the bonds 17 at an angle tothe fianges 11 is t at when a plaster coatin 18 is applied to the butside of a wall 19a ut a stud 20, the plaster tends to work under the bonds 17 and thus increase the firm grip'ifthe' any desired type is applied to the studding 20 by means of nails 22, andthe. nails 22 may also be usedto attachV the expanded 10o metal win of the corner bead to said stud. After app cation of the expanded metal 21 and corner bead to the stud 20, the la er of plaster 18 is applied in a manner well own to the art.

` The improved corner bead may be constructed in a number of diiferent ways. The bead may be formed into annular shape, and

` the wings are then slitted and expanded.

s of

Rotary cutters or reciprocating dies may be used and the expanding may be accomphshed simultaneously with the slitting if desired.

I would state in conclusion that while the illustrated example constltutes a practical embodiment of my invention, I do not Wish to limit myself precisely to these details,since manifestly, the same may be considerably varied without departing from the spirit of the invention as dened in the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a corner bead construction, a bead formed of sheet metal, a pair of anges extendin outwardly from said bead, and expande metal wings integrally attached to said flanges, the strands and bond of said win being wider adjacent the bead than at t e outslde edges of said wings so as to give added strength to said -wings adjacent said flanges.

2. In a corner bead construction, a bead of sheet metal, a pair of flanges extending outwardly from said bead, and expanded metal wings integrally attached to said flan es, the strandsof said wings being wider a jacent said flanges than at the outer edge of said vwm said strands being to t e plane of said wings.

3. In a corner bead construction, a bead sheet metal substantially semi-circular in cross section, a pair of anges extending outwardly from said bead, an expanded metal wing integrally flanges, bonds immediately adjacenteachfof saidilanges and connecting said wings to said flanges, said bonds extending outwardly vat an angle to the'plane of sald flanges, and strands composing said wings, the strands bent at an angle K adjacent -saidanges being wider than the strands near the outer ed e of said win n FRE A. MANSE.

attached to eachv of saidv CERTIFICATE OF CORRECTION.

Patent. No. 1,907,990. May 9, 1933.

FRED A. -MANSKE It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, line 59, before "the" first occurrence, insert the syllable and words "stantially 90 degrees. A short distance from"; and in the same line, after "with" insert the words "slits in a manner well known to the art, and"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 11th day-of July, A. D. 1933.

M. J. Moore.

(Seal) Acting Commissioner of Patents.