US1428169A - Roofing strip - Google Patents

Description

Patented Sept. 5,

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FREDERICK LAI-ST AND LABAN ELLSWORTH JONES. OF ANACONDA. MONTANA,

ASSIGNORS TO ANACQNDA COPPER MINING COMPANY, A CORPORATION 011 MONTANA.

BGOFING STRIP.

.Application filed Gctober 21, 1921. Serial No. 509,286.

I'o all '1c/z om 'if muy concern Be it known that we, lpunnnnnn LAIs'r and LAnAN Ennswon'rn JoNias, citizens ot' the Vnited States. residing at Anaconda, in the county'of Deer Lodge, and State of Montana, have invented certain new and useful Improvements in Roofing Strips, olf which the following is a specification.

This invention relates to roof covering of metal.

It is well known that roof covering ot' any kind. it' applied in large sheets to pitched roofs. presents an unsightly ap pea-rance repulsive to the eye and more or less destroys what" artistic 'effects other parts of the building would have. Thus large sheet roof coverings are practically Aout of the question in connection with pitched roofs. The expedient of pressing the sheets to give them shingling eti'ect is insutlicient for the purpose.

The practice generally in vogue is there fore to apply the covering in relatively Small strips or shingles. ln order to produce the shingling etiect and at the same time afford satisfactory protection against driving rain, the strips or shingles are laid above each other in Aoverlapping relation and thus'the covering may consist in suhstance of several layers of metal.

It is the object ot this invention to provide' roof covering of metal of such design and construction as to procure a maximum covering area with a given weight and thickness of metal and at the same time.

produce the square butt etl'ect of a typical shingled roof.

For a full understandingr ot the invention referenceis made to the accompanying drawing in which Fig. 1 is a perspective sectional view vertically through a plurality of strips Fig. 2 is a section on a larger scale showing the joint shown in Fig. l;

Fig. 3 is a transverse section through two adjoining strips; i

Fig. 4 is a plan view of a strip.

Fig. 5 is a plan View of a blank illustrat ing the first step in the formation of the finished product;

C other step; and

Fig. 7 is an end take at right angles to Fig. 6.

Having reference to Figs. 1 to 4l, l repre- Fio. 6 is a similar view illustrating :nrtv

sents one unit of a. relatively large number of strips oi' which the roougmay he con1- posed. The dimensions and the proportion ot length and width may vary within rela tiveljvv wide limits. strip of about G' in length and 8 in Width is his` suited for most cases and may he considered as typical.

The strip has along its top edge a portion heilt upon itseltl in the form of a loop 2 which itselil is bent upon the main portion ot' the strip and spaced therefrom slightly more than the thickness of the strip. The tree end projecting upwardly from the loop Q is provided. with a plurality of nail holes say S apart. Alongl the lower edge the strip l is bent twice to define two portions l and 5 respectively. to ll the space between the main portion ot the strip and the loop 2 of a strip immediately below strip l and the portion 5 is ,wide enough to extend around the end of the loop 2.

In practice We prefer to form the end of theloop Q square and the portion 5 correspondingly to imitate the square loutt ell'ect of a shingled root. This arrangement also has a reinforcing effect inasmuch as it normally resists ordinary forces ltending to crush the butt portion thus Jformed.

t the ends the Vstrip is provided with turned over portions ortongues 6 and 7 respectively. The portion 6- is turned over the upper surface While the portion 7 is turned over the lower surface, both `forming channels slightly larger than the thickness of the strips.

The portion 4 isjust long enough- The Inode of manufacturing the strip is preferably as follows: I

From a strip of metal of the desired dimension portions 8 and 9 are out out to produce a form having the shape shown in Fig. 5. The tongues 10 and 1l thus resulting are then ybent back, tongue 10 over the upper surface and tongue l1 over the lower surface as indicated in Figs. 6' and 7. The purpose of these tongues is to laterally interlock adjacent strips and form a seal against ingress of water.

The application of the strips is obvious: Shingling is, as is usual, started at the bottom of the roof. Starting the operation :from right to left one strip islaid downat the starting point and nailed down. Then the tongue. ll of the next strip is enteredy into the channel rletlned by thetongue l() of the rst strip.l pulled to' the-left and nailed down. All4 the other strips of the (irst row are applied in the same way. Ihey strips ot the second row are then applied by interlocking tongues l() and ll of adjacent strips in the same way and at the saine time-pnshing the portion 4C up into the space between-the loop 2 and the main portion on the strip or strips below. It is of course preferable to otset the strips in one row relatively to the strips in the adjacent rows. The other strips and rows of strips are then applied in the same manner to the top ot the roof.

The structural significance of the arrangement is as follows:

The loop 2 of one strip together with the portions l and 5 of the next higher strip forms a seal through which the most vio lent driving rain cannotbreak. rl`he seal constituted by the tongues l() and 1l is likewise 'impregnable The parts of the strips through which nails are driven are absolutely protected so that no deteriorating action can start in that direction. The strips are so interlooled that wind-lifting is made impossible.

Byv providing these seals the amount ot' metal necessary to cover a given area exceeds the amount represented by a single sheet covering the area only hy the relatively small amount necessary for forming the seals. The percentage of extra metal necessary over and above the amount cor- .I i e n respondingto a single sheet is very small and the cost ot a roof is correspondingly decreased.

nasales The coveringr area per pound of metal is thus much greater than is possible with. shingles laid accordlngto the .so-called American plan or accordingr to the Diamond .the body of the strip to provide a clearance, then outwardly substantially at right angle tothe body -ot the main body, then upwardly and inwardly to points lying in the plane of the strip slightly above the upper edge of the main body portion and then upwardly substantially in the plane of the main body portion.

2. A. metal roofing strip according to claim l having at its lower end a portion extending inwardly substantially at right angle to the main body portion and then upwardly substantially parallel to the main bod portion, the said clearance being such as o readily receive the upwardl extending portion at the lower end ot another strip.

ln testimony whereof, We ax our signatures.

resonator( nner. maar; rLLsr/oarn Jones.

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