US1562191A - Expanded-metal fabric - Google Patents

Description

Nov. 17, 1925. J 1,562,191

c s. RENO v EXPANDED METAL FABRIC Filed Dec. 12, L921 mvizmon.

ATTORN v Patented Nov. 17, 1925.

* umm stares mam? CHARLES RE-li'O, NEW YORK, N. Y.

' enemas-Mame; Fannie.

Applicafricm f led, December 1,2,, 1921;, serial, No; 521,513,, r i

ptndedmet l fabric snchz forinstance, as. is

P described in the Goldingfatent No. 5212s.? of October 9, 189fll whereby a fabric having superior physical propertiesand. capable of application I to certainv uses. for which, the Golding fabric is not well adaptediislplroi du eck. As. iswell known to those, fam iar with. this art,. Golding. fabric is made. of relatively heavy stock produced by a shearr ing operation. inv contradistinction to. dc.- ployed. fabric, \YlilCllzCitI]; be formed by slit. ting ablankand then stretching it laterally, V Itv has recently. been proposed. to, provide an expanded, metal "fabric. wherein the strands and'fthe bridges. connecting the same are allld'i'sposedlin a single horizontal plane, thereby reducingfthe QYBralI- thickness, of the fabric sheet to the thicknessof'the indi- 'idual. strands, so; as to, enable, the. fabric sheet when en hod'ied in a ijelfatiirely'thin cement tile. to obtain a secure bonded union therewith, and-lto-increaseresistance to tensile strains. l loweverftliis proposed construction has certain material disadvantages. The gain in tensile strength is secured at a sacrifice of resistance to compression stresses which is an inherent attribute of the original Golding fabric. Also in the flattening of the original Golding fabric so that all of its strands are disposed in the same horizontal plane a material elongation of the fabric sheet is unavoidable, and the bridges are subjected to tearing strains tending to separate the fabric strands.

In my proposed new metal fabric, I aim to retain to a large extent the resistance to compression stresses of the original Golding fabric with the greater resistance to tensile strains and to also materially reduce the overall thickness of the fabric sheet in comparison with that of the Golding fabric:

so as to enable the new fabric to be embodied in relativel y thin concrete or in otlier ccmentiti'ous stiuctures. I

With the above and other objects inview, myinvention cbnsists in the in'iproved expandedinetal'. fabric which I have illustrated in; one of'li'ts embodimentsin the accompangying drawing wherein similar reference characters designate corresponding; parts tliroughout theysev'eral iews and in which v Figure 11 is'aplan view'of'a pieceofuny e5 improved expjanded metal fabric t Figure 2" is af'section taken; on .the line In accordance with this invention 1 proposeto provide a fabric which ina-yibei enrhedded in thin 'geme e tiles; and will offer a' maximum. resistance to compression as well. as. tensile stresses and thus more eff'eotively obviate possible cracking offltlie tile by reason. of" strains j t'endin'g to distort the reinforcing fabric.

To thisendlfsubject' theoriginal Golding expanded. m tal f b ic to pr perly app ied pressures so asfto cionv-ert the fabricislieet into the condition seen in tlie d fr a\"ving s 1:11 the Golding expanded metat fabric, the strands and hridgesrof' the fabric which were d sposed in app oximate y.- vertic l p ane andin, Figure 21ft will be observed 'thattliose parts a e,p i i ed at an. an le int r n i te as horiz ntal and; vertic planes of he heet- It i also e s r ed. th t in 2" the upper edge of'one strand and the lower edge of an adjacentstrand"extend i'iifflaf straightline obliquely to the plane of theint'ermediat'e bridge, While in the Golding construction those lines bisect the plane of the corresponding bridge at a right angle.

It will be further observed that the overall thickness of the sheet in the Golding construction is equal to the width of the bridge and to twice the width of the strand, while in Fig. 2 the overall thickness of the sheet is less than the width of the bridge and less than twice the width of the strand.

.The metal strands 7 inapplicants construction are positioned at an angle of approximately 30 from the horizontal plane of the sheet. Likewise the connecting bridges 8. between the strands are disposed at substantially the same angle. While I have referred to the strands and bridges as being positioned at an angle of approximately 80,

1 do not desire to be thus limited as various angles less than 60 would to a greater or less degree accomplish my present purpose. In practice however, I preferably construct the fabric sheet With'its strands and bridges displaced from the horizontal to an angle of less than In the application of pressure to the original sheet of Golding fabric so as to change the angle of the strands and bridges with respect to the general plane of the sheet as just referred to, the sheet is not distorted and the dimensions of the sheet as a whole remain practically the same. In other words, there is no material elongation or decrease in width of the original fabric sheet.

.My new expanded metal fabric above described is admirably adapted for use in the reinforcement of roof tiles, building slabs, and other thin structural parts formed of concrete or other cementitious material. Owing to the angular disposition of the metal strands and the bridges the resistance of the fabric to tensile strains during use thereof, is very materially increased, and as such angular disposition of the strands and bridges decreases the over-all height of the fabric with respect to that of the original Golding fabric, the new fabric may be used in thin concrete tiles in which it is usual to imbed the fabric in the tile or slab on one side of its neutral axis in order to secure the most effective results. Further, the angular disposition of the strands and the bridges obviates tearing of the fabric at the bridges when the tile is subjected to tensile strains. Again, compression stresses in directions at an angle with respect to the general plane of the fabric are more effectively resisted in the use thereof, owing to the obliquity of the metal strands and bridges, than would be the case if these strands and bridges all occupied the same horizontal plane parallel with the faces of the tile.

I have herein referred to one desirable and satisfactory embodiment of the invention,

but as above noted, slight variations from the described construction might possibly be resorted to without materially effecting the results obtained. Accordingly the privilege is reserved of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope of the appended claims.

I claim:

1. A sheet of metal fabric consisting of integrally connected, laterally stretched metal strands terminating in bridges having a width substantially equal to double the width of the strands, the strands and bridges being disposed in inclined planes relative to each other and the general plane of the fabric and the thickness of the sheet between its outer faces being considerably less I than the width of the bridges.

2. A sheet of metal fabric consisting of laterally stretched metal strands terminating in bridges disposed in inclined relation with respect to the strands and having a width substantially equal to double the width of the strands, the bridges being all disposed at substantially the same inclination relative to the general plane of the fabric, and the thickness of the sheet between its outer faces being considerably less thanthe width of the bridges.

3. A sheet of metal fabric consisting of integrally connected, laterally stretched metal strands terminating in bridges of a Width substantially equal to double the width disposed in inclined relation with respect to the shank and having the strands, the bridges being all disposed at substantially the same inclination relative to the general plane of the fabric, and the thickness of the sheet between its outer faces being considerably less than the width of the bridges. c

In testimony that I claim the foregoing as my invention, I have signed my name hereunder.

CHARLES STOWE RENO.

Images