US1499408A - Waterproofed lathing - Google Patents

Description

M 1 mm. 7

c. H. SCMMMELL WATERPROOFED LATHING Filed March '13 1922 ATTORNEY s n. SCAMMELL, on N W roan, n. 52., ,ASSIGNOR 'ro cnnnnns H. scnnnnnn' cone, on NEW Y0, n. Y., a conronnmon or new EY.

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.- Application lilecl March 13, 1922.. Serial No. 643,134.

To all whom it may concern: I Be it known that l, CHARLES H. SCAM- MELL, a citizen of the United States, residing at New York city, county of New York,

and State of New York, have invented certain new and useful Improvements in Waterproofed Lathing, fully described and rep resented in the following specification and the accompanying drawings, forming a part of the same. i

The object of the present invention is to provide an improved waterproofed lathing, combining a waterproofed backing sheet and metal lath of any Well known type, in

11 which the strands of the metal are so sep, arated and shaped that with the backing sheet applied thereto there still will be sufiicient space to permit plaster -or other cementitious material applied. to the lathin to be 2 firmly anchored thereto. 'Although't e waterproofed lathing of the present invention will be found capable of Various uses, it may be used with especial advantage in stucco work, and especially outside stucco work, because the deteriorating efiect ofmoisture on the wooden support for the stucco material, due to the moisture in such material when applied to the lathing or subsequent access of rain water effected by saturation of the more or less porous stucco material, is efiectively prevented by the use of the present waterproofed lathing, and the life of the structure as a whole thereby prolonged. In addition, the invention provides an article which greatly simplifies and expedites the formation of stucco on structures, becausethe waterproofed lathing of the present invention is supplied as a unitary article and may, therefore, be quickly secured to its support in one operation, while heretofore it has been the practice in stucco and similar work, tofirst secure tar pa-" per to the boarding support, then secure the metal lathing thereto, and thenapply the stucco material. The use of such sheets, is objectionable, of course, not only because not fully. waterproof but alsobecause of the time required to apply such paper over that for the use of the present invenand .the novel features of the invention then to be pointed out in the claims.

I In the drawings- Figure 1 is a face view showing a portion of boarding with the'improved waterproofed lathing thereon, and a portion of'stucoo material anchored to the lathing, all the parts being shown broken away, and 1B Figure 2 is a section on the line 2-2 of Referrin now to Figure 1, the letter A indicates t e usual boarding, fastened to studs or uprights in the usual manner for supporting strips B of lathing of the type hereinafter referred to. Such strips may be secured to the boarding in any suitable manner, such, for instance", as by stapling to the boards at the adjoining edges of the metal lath, which preferably overlap. C indicates a portion of stucco material applied to the lathin s In %igure 2 there is clearly shown the relative positions of the backing sheet, the waterproofing coating thereon, and the metal lath, with respect to the support for the whole and the stucco material thereon. In this figure, the letter D indicates the backing sheet for the lath, which sheet may advantageously be heavy paper or other suitable material. Between the backing sheet D and the strands of the metal lathing B, there is interposed a layer of waterproofing material E, this latter being pure asphalt, or a material having at least equivalent waterproofing qualities and characteristics which will permit it to be softened by heat,

may be embedded therein to a sufiicient extent to cause the backing sheet D to adhere to such lathin as hereinafter explained. The metal lathing preferably used with the present waterproofed backing, is of a type substantially like that shown and Mow'n as expanded metal, wherein the metal is slit and the strands drawn or forced out to open the slits and turn the strands at an angle to the plan of the metal, so that when the waterproofed backing is adhesively or otherwise, secured thereto secure anchorage for the stucco material will be afiorded.

One method of forming the im roveol 'waterproofed lathing above describe consist s in taking asphalt, referably 96% to 98% pure, and-with a me ting point of from so that the strands of the metal lathing B flu It 140 to 160 E, heating it sufliciently to soften it and then applying this to heavy paper in any convenient manner so as to coat the whole surface of the paper. Asphalt of this melting point is efli-cient and handles well even when cold. Ordinarily ithe coating of but one side of'such paper will be suflicient, although both sides may be I coated, if desired; Such waterproofed backing metal lathing formed to anchor fplastic material between it and a plain sur ace in contact with such lathing, a backing sheet secured to said latln'ng, and a layer of wateri I 1,49q,eoa*

proofing material interposed between said acking sheet and lathing.

2. A new article of manufacture, comprising metal lathing formed to anchor plastic material between it and a plain surface in contact with such lathing, a backing sheet and an interposed layer of waterproof material adhesively securing said backing sheet and lathing together.

3. A new article of manufacture, comprising metal lathing formed to anchor lastic material between it and a plain surfiice in contact with such lathing, a backing sheet for said lathing, and an interposed layer of asphalt adhesively securing said backing sheet and lathing together.

In testimony whereof, I have hereunto set my hand.

CHARLES H. SCAMMELL.

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