US1730935A - Lath - Google Patents

Description

W. D. HICKS Oct. 8, 1929.

LATH

Filed Oct. 7, 1925 ,Afforwey I Patented Oct. 8, 1929 UNITED STATES PATENT OFFICE WILLIAM D. HICKS, OF INGLEWOOD, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO MASTER WIRE LATH COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORA- TION OF CALIFORNIA Application fil ed October 7, 1925.

This invention relates to a lath panel for the reception of plaster, stucco and similar plastic wall-forming compounds, and more particularly pertains to that type of lath embodying wire strands permanently afiixed to a backing sheet such as set forth in my copending application filed March 31, 1925, bearing Serial Number 19,614. I

An object of the invention is to provide a lath of the above character in which the wire strands are so formed as to be spaced, in major part, from the surface of the backing sheet to which it is attached, whereby the strands will be disposed well within the pla'ster applied to the lath so as to effectively reinforce the plaster and securely retain it in place.

Another object is to provide a lath panel of the type specified which is so designed that the wire strands may be formed, arranged and connected together so as to provide a substantially net-like or reticulated structure during the course of assembling the wire on the backing sheet.

Another object is to provide a metal lath and backing sheet combined in a unitary structure adapted to be formed in panels which may be readily applied to supporting structures in one operation.

A further object is to provide a lath structure possessing the combined qualities of lightness and strength.

The invention resides generally in the provision of a lath panel comprising a backing sheet to which is permanently attached a wire structure embodying a series of spaced parallel strands extending transversely or longitudinally of the backing sheet having bends formed therein which seat on the backing sheet and are affixed thereto whereby lengths of the strands between the bends will be spaced from the surface of the facing sheet, and which also includes lengths of wire bent in general zig-zag form arranged between adjacent pairs of the other strands and aflixed thereto. The invention further consists' in coating the structure throughout with a fluid which hardens when dry, whereby the backing sheet is stiffened and rendered moisture-resistant and whereby adhesion of Serial No. 61,035.

the backing sheet to the wire structure is effected, and further resides in applying an absorptive material to the coating to provide a bond for plaster throughout the area of the lath structure.

The invention further resides in the parts and in the combination, construction and arrangement of parts hereinafter set forth and illustrated by way of example in the accompanying drawings, in which Fig. 1 is a plan view of the lath structure;

Fig. 2 is a view in section as seen on the line 22 of Fig. 1;

Fig. 3 is a View in section as seen on the line 33 of Fig. 1;

Fig. 4 is a detail in perspective showin the manner of forming the transverse and zig-zag strands, connecting them together and fastening the transverse strands to the backing shee Referring to the drawings more specifically, A indicates a backing sheet which is preferably flexible and which may be formed of paper or other suitable fibrous material, and 13 indicates generally the wire structure which is affixed to the backing sheet to form the completed lath panel.

The wire structure comprises a series of parallel wire strands C which extend transversely of the backing sheet and each of which strands is formed with a series of spaced down turned bends D which seat on the backing sheet and are secured to the latter by means of staples E or other suitable fastenings whereby the lengths F of the wire strands C extending between the bends D are positioned in spaced relation to the backing sheet. Interposed between each pair of adjacent strands C is a strand G of general zig-zag for mation; the strand G being formed with a straight portion. H from which leads an obliquely extending length I leading to a straight portion J from which leads another oblique portion K to another straight portion H, and so on throughout the length of the strand G. The straight portions H and J abut against the adjacent parallel strands C with the oblique portions I and K extending in opposite directions. The strands G arranged on opposite sides of the strands C hering together.

are disposed in alternative relation, that is, with the straight portion H or" one strand G on one side of the strand C, and the straight portion J of the other strand seating on strand C opposite the straight portion H; the strands G and C meeting intermediate the lengths of the strand portions of the strand C between the spacing bends D. The strands G and C are securely connected together by metal clips L which embrace the portions i, J and F of the strands. Preterab pair of clips L are arranged in spaced relation along the straight portions H and J.

It will now be observed strands G are supported strands C and are maintained spaced rel tion to the backing sheet A and with tl e oblique portions 1 and K will, with the ties afforded by the strand C, form a truss-like structure.

After thus iiorming the combined wire structure and backing sheet, the are with a suitable water proofing cated at M, which material is or V ter and is applied by subnierg ture therein, and is of such that the zig-zae" character as to harden when dry and possesses such cementitious or adhesive qualiti s as tocooperate with the staples E in etl'ecting a bond between the wire structure and the backing sheet.

Vhile this adhesive waterproof coating is in a fluid or semi-fluid state a coating comparatively coarse material or moistureabsorptive character is applied there dicated at. N; this material being ap both sides of the backing sheet a with the coating M to stiffen the sheet, and at the same time render it imp-ervious to penetration by moisture. This material N on the outer face of the caching sheet ,afiords a bond for plaster and pro the necessary suction to hold tree A p-.. place, and permits the use of the lath head. By applying the R2: back of the backing sheet, panels 0 may be stacked without adiace t panels a The material ll preferably consists of lziesels u ir otheri linown diatoinaceous earth but may comprise any granular or fibrous material having the requisite quality of absorptiveness.

It is to be noted that in the lath thus fo med the spaces bounded by the wires will be con; para-tively large in relation to the s aces occupied the wire so that the structure will be light in weight, yet by reason of the truss like arrangement. will be rendered exceedingly strong, and that when a coating of plaster is applied to the lath as indicated at O in Fig. 2, the wire strands will be well enibedded in the plaster so to a substantial reinforcement. A feature of the construction resides in joining the adjac "it lengths of wire in spaced relat on to the ban;- ing sheet so as to form relatively wide surfaces or areas of the wire structure at intervals throughout the lath panel, as particularly shown in 3, which affords increased bond for plaster at these points.

I claim 1. A lath structure comprising a flexible backing sheet, a series of spaced parallel strands extending transversely of said sheet having spacing bends formed therein seating on the backing sheet, said strands being arranged with the portions thereof extending between the bends spaced from the backing sheet, staples engaging the bends and backing sheet, zig-zag wire strands arranged between the adjacent parallel strands, the zigzag strands on opposite sides of the parallel strands being disposed in alternative arrangement whereby oblique portions of the Zig-zag strands will extend from opposite sides of the strands in opposite directions, and clips connecting the transverse strands and the zig-zag s rands on opposite sides together whereby said Zigzag strands are supported wholly on s l transverse strands, said connection points occurring between the points on the strands wher the spacing bends occur.

2. A lath structure comprising a flexible backing sheet, a series of spaced parallel Sal nds extending tran versely of said sheet having s acing bends formed therein seating on the backing sheet, said strands being arranged with the portions thereof extending between the bends spaced from the backing sheet, staples engaging the bends and backing sheet, Zig-Zag strands on opposite sides of the parallel strands being disposed in alternative arrangement whereby oblique portions of the zigzag strands will extend from opposite sides of the strands in opposite directions,

c ips connecting the transverse strands andthe zigzag strands on opposite sides together whereby said zig-zag strands are supported wholly on said transverse strands, and an adhesive waterproof coating on said backing sheet cooperating with the staples in aflixing the bends of the transverse strands to the backing sheet, said connection points occurring between the points on the strands where the spacing bends occur.

A lath structure comprising a flexible backing sheet, a series of spaced parallel strands extending transversely of said sheet having spacing bends formed therein seating on the backing sheet, said strands being arranged with the portions thereot extending bet-ween the bends spaced from the backing sheet,-staples engaging the bends and backing sheet, Zig-zag strands on opposite sides of the parallel strands being disposed in alternative arrangement whereby oblique portions of the zig-zag strands will extend from opposite sides of the strands in opposite directions, clips connecting the transverse strands and the zigzag strands on opposite sides together whereby said zig-zag strands are supported wholly on said transverse strands, said connection points occurring between the points on the strands where the spacing bends occur, an adhesive waterproof coating on said backing sheet cooperating with the staples in afiixing the bends of the transverse strands to the backing sheet, and an absorptive material adon intermediate the spacing bends and there-.

by held in spaced relation to the backing sheet.

5. A lath structure comprising a flexible backing sheet, a series of parallel wire strands extending transversely of said backing sheet having spacing bends seating on the backing sheet, means effecting engagement between said bends and backing sheet, said strands arranged with the portions extending between the bends spaced from the backing sheets, zigzag strands arranged between adjacent pairs of parallel strands and supported thereon intermediate the spacing bends and thereby held in spaced relation to the backing sheet, and an adhesive material coating to said strand and backing sheet.

6. A lath structure comprising a flexible backing sheet, a series of parallel wire strands extending transversely of saidbacking sheet having spacing bends seating on the backing sheet, means effecting engagement between said bends and backing sheet, said strands arranged with the portions extending between the bends spaced from the backing sheet, zigzag strands arranged between ad acent pairs of parallel strands and supported thereon intermediate the spacing bends and thereby held in spaced relation to the backing sheet, an adhesive material coating said strands and backing sheets, and an absorptive material adhered to said coating.

7. In a lath structure, a series of spaced parallel strands formed with spacing bends, Zig-zag wire strands arranged between the adjacent parallel strands, and clips connecting the parallel strands and the zig-zag strands intermediate the bends in said parallel strands. g

In testimony whereof I have affixed my signature.

WILLIAM D. HICKS.

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