US887674A - Sheet-metal lathing. - Google Patents

Description

P H S 0 T N I G A M W m SHEET METAL LATHING. APPLICATION {ILED mums, 1907.

ufz'iimssea' Jul/awful 7710mm WMacinfosfi Vide an. improved corr g and moms WALKER" nic mrosn, or

PENSHURST, NEAR SYDNEY, NEW SOUTH WALES,

AUSTRALIA.

sneer-mama LATHING.

Specification of Letters Patent.

Application filed larch 25, 1907. Serial No. 864,228.

Patented May 12, 1908.

To all whom it may concern:

Be it known that I, THOMAS WALKER Maom'rosn, a subject of the King of Great Britain, resid' at Roseby street, Pens- -6 hurst, near Sy ney, in the State of New South Wales and Commonwealth of Australia, mlllwright, have invented a new and useful Improved Sheet-Metal Lathing, of which the following is a specification.

This invention has been devised in order to orated sheet metal lathin with projections to be used in substitution or laths in plaster walls and the like which is manufactured in sections or sheets ada ted to interlock one with the other and which is cheaper handier and more effective than substitutes forwood lathing ordinarily'used.

The improved sheet metal lathing consists of sheetiron or steel (preferabl galvanized steel) corrugated withpieces as ort distance apart along its length punched from the convexlty of. a corrugation and bent over towards the next corrugation to form a projection with such a set that two of these opposltel situated projections will form a doveta1l ho low to receive and hold the plaster. The pro'ections in the corrugations are set dlagon y that is the middle of one is oppos1te the space between two on the next corrugation. At one edge of a section or sheet a parallel air of projections are bent over to one shot or to form a hook or a selvage of ap roximatelytubular formation adapted to t or'interlock' into a similar or corresponding tubular formation on the edge of the next section or sheet. But in order that the invention may be readil understood the same will now be descri ed with reference to the drawings accompanying and forming art 'of' this complete specification and in w 'ch Figure 1 is a perspective view of two sheets of the improved metal lathing interlocked :sidewardly together Fig. 2 is a plan and Fig. 3 a cross sectional elevation on the plane 1-1 lofthe same.

Thisnnproved sheet metal la'thing with corrugations 4.and projections 5 is manufaclaths, substantially as described.-

tured from galvanized sheet steel assed endwise into a machine with suitab e rollers so arranged that the sheet will become corrugated lengthwise as it passes along and then' punched in a straight sector ended fashion as 6 in the body-and reversely-to said punchings' in both edges as at 7 and the punchings 5 and remainder edges 8 pressed from the corrugations 4 and bent over on a mandrel to the required set preferably as shown. The unchings 5 and the remaindersS .at one e go are bent over more than the bodyipunchings 5 so as to form a selvage adapted to take into and between the similar unchings 7 and remainders 8 on the outer e ge of/a similarly treated sheet. Sheets of' lathing may be formed from the individual pieces of lath, constructed as hereinbefore. described, of any required size, and by reason, of the interlocking or hinging'of the edges of said pieces of. lath,

square corners or n cessary curves may be made by the sheets without dismembering the same. I

In use these sheet metal lathings are 'nailed or otherwise fastened to the studs or other support of a wall or ceiling or the like each sheet being interlocked at its ed es as described and the plaster is then s rea over the sheetin and will be firmly he (1 thereon b the hoo -like or tubular formation or set of the punchings 5 and remainders 8.

Having fully described and ascertained In said invention and the manner in which it 1s to be performed I declare that what I claim 1s:

1. As an article of manufacture, a'corrugated metallic piece of lath made of a single plate having through each slope of corrugations a row of apertures, said a ertures being formed by cutting the metal ate and bending a portion outwardly and fiackwardly towards the similar bent portions'of the nearest row of said apertures, the side edges of the lath being rovided with pro'ections which are similar y bent backwar y and being thereby adapted to interlock with adjacent .2. As an article of manufacture asheet of metallic laths comprising two or more single laths, constructed as herein described and claimed, and interlocking on their edges, substantially as described.

. 3. In a sheet metal latlnng plate, the combination of two metallic laths each having longitudinal exterior and interior open ribs connected together by an integral Web, and interlocking e ges, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of 10 two subscribing Witnesses.

THOMAS WALKER MAGINTOSH.

Witnesses FRED WALSH, PERCY NEWELL.

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