US1179085A - Concealed-nail joint for sheet-metal roofing. - Google Patents

Description

C. B EDWARDS.

CONCEALED NAIL JOINI FOR SHEET METAL ROOFING.

APPLICATION FILED JULY 26. 1915.

Patented APR-1Y1, 1916.

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TED STATES PATENT OFFIGE.

CHRISTOPHER B. EDWARDS, OF COVINGTON, KENTUCKY, ASSIGNOR TO THE MOESCHL- EDWARDS CORRUGATING COMPANY, OF COVINGTON, KENTUCKY, A CORPORATION OF KENTUCKY.

Specification of Letters Patent.

Patented Apr. 11, 1916.

Application filed July 26, 1915. Serial No. 41,977.

To all whom it may concern:

Be it known that I, CHRISTOPHER B. EDWARDS, a citizen of the United States of America, and a resident of Covington, in the county of Kenton and State of Kentucky,

. have invented a certain new and useful Improvement in Concealed-Nail Joints for Sheet-Metal Roofing, of which the following is a specification.

. view and at the same time reduce leakage at that point to a minimum, assuming that any leakage could result owing to the hole produced in driving the nail.

' A very important object of the invention, as well, is the material saving of considerable metal that has heretofore been necessary in the laying of a crimp-joint in which an extra allowance of material has been made in providing a foot-hold for the nail within or beneath the joint and in direct contact with the sheathing, the short and narrow independent transverse strips of metal required in producing my individualnailconcealing-caps being well adapted to be made from small pieces of metal or practically valueless scrap and thus, also, reducing the wasteand cost of material to a decided minimum.

, The details of structure in connection with various analogous forms of my invention herein will be fully hereinafter described in connection with the accompanying sheet of drawings, in which latter,

Figure 1 is a transverse section of a crimpjoint of sheet-rnetal roofing, embodying my invention herein showing one form of my capping and concealing strip in normal, horizontally-extended position ready for bending or folding over on the head of the nail, which latter has been driven into fastening-place through the apex of the joint into the supporting-sheathing below; Fig. 2, a view similar to Fig. 1, but showing my said capping and concealing strip bent and folded over the head of the nail into covering and concealing position; Fig. 3, a view similar to the preceding two views, but

. showing a slight variation in the placing of the usual lead-washer, the latter, in this View, being in contact with the upper surface of the capping-strip, while in the preceding two views said lead-washer is in contact with the lower face of said cappingstrip; Fig. 4, a transverse section similar to the preceding three views, but showing my capping-strip in its preferred form unaccompanied by a lead-washer or any other washer, but intended as being made of a thick strip of lead itself so as to discard the use of a washer; Fig. 5, a transverse section similar to the preceding views, but with my capping-strip provided with a fold or hookformation along its lower edge that is adapted to engage beneath the lower edge of the lapping-member of the crimp-joint and with its free end extended upwardly ready for bending or folding down upon the fastening-nail head, the nail not being driven through the capping-strip in this instance but provided with a lead-washer between its head and the apex of the joint; Fig. 6, a

view similar to Fig. 5 and of its same struc- Y ture, but with the capping-strip bent and folded down in concealing and protecting position on the driven nail head; Fig. 7, a transverse section, simliar to Figs. 5 and 6, with the nail driven direct into the apex or crown of the joint and with a similar capping-strip, but with the lower inwardlyturned hook end thereof engaging a slit or narrow slot made in the outer lapping'member of the crimp-joint and showing the upper or free end of the capping-strip bent over and folded down upon the head of the nail in the same manner as shown in Fig. 6; Fig. 8, a view similar to Fig. 7, but with my capping-strip having its lower end bent so as to enter the slit or narrow slot in the outer-member of the lapping crimp-joint and then bent into outwardly-disposed hookform so as to engage the lower edge of said outer-member of the crimp-joint on the outer face thereof; Fig. 9, a fragmentary plan view of Fig. 1; Fig. 10, a fragmentary plan view of Fig. 3; Fig. 11, a fragmentary plan view of Fig. 4:, which is practically the same as Fig. 9, but with an oval-shaped capping-strip; Fig. 12, a fragmentary plan of Fig. 6; Fig. 13, a fragmentary plan of Fig. 7 and Fig. 1 1, a fragmentary plan of Fig. 8.

In Figs. 1 to 8, both inclusive, 1 indicates the ordinary sheathing; 2, the fastening. nail; 3, the lead-washer; 1, the body-portion of one of the roofing-sheets having the lower or lapped member of the crimp-joint; 5 the next adjacent roofing-sheet that has the usual inverted-V-shape outer or lapping member of the joint; and 6 the nail-head. In these views, I have shown for example and convenience, a lapped crimp-joint, whose lower or lapped member is composed of a slanting part 7, a guttered or channeled apex or crown 8, a slightly slanting part or leg 9, a gutter or base 10, and an upwardlyturned, slanting flange 11, and whose upper or lapping member is composed of an inclined or slanting part 12, a horizontal apex or crown 13 and an inclined or slanting outer-limb 14, that are adapted to fit snugly in place upon said lower or lapped member. Of course, it is not essential to make the crimp-joint just as I show it, but it is desired that it have an elevated apex or crown, with sloping sides and an internal stifiening or supporting, approximately perpendicular member to provide for the driving of the nail through the said apex or crown. whereby both lapped-members of the joint are pierced by the nail mid-width of the joint.

In Figs. 1 and 2 I have shown one form of my nail protecting and concealing device, and in which the lead-washer 3 lies between the inner or fastening end of the narrow, or short, transverse concealing-strip 15 and in contact with the apex 18 of the lapping-member of the joint, the head 6 of the nail lying in contact with the outer face of the said fastening-end of the concealing-strip. The said lead-washer is thus concealed beneath the strip 15 when the latter has been bent over the nail-head 6 along the line 16 and thence over the opposite edge of the nail-head along the leadwasher and with its outer end lying in contact with the member 14 of the lapping-member of the joint, as best shown in Fig. 2. In Fig. 3, I show how the said lead-washer is arranged on the nail-shank directly be neath the head of the nail and on top of the said fastening-end of the concealingstrip 15, the outer, horizontally-disposed, free-end of said strip 15 being adapted to be readily bent and turned over the Washer and nail-head, the same as in Fig. 2, but with the said fastening-end of the strip beneath said washer.

In Fig. 4: I show my preferred form of device in which a thickened strip of metal 15 is used to serve as a concealing one, its inner or fastening end being in contact with show the concealing-strip asit appears i .to engage beneath the lower edge of the outer-member 14 of the lapping-member of the joint, and the upper end of the strip is passed onward over the nail head, to lie flatly in contact therewith and thence is turned in a slanting manner downwardly until its free end rests in contact with the outer face of the slanting member 12 of said lapping-member of the joint. In Fig;

5, however, I show how the free-end of the strip 15 extends upwardly and in position ready for bending or turning down upon the nail head, as seen in Fig. 6. p

In Fig. 7 I have shown the concealingstrip 15 of the same form as that seen in Figs. 5 and 6, but the lower hook-end 17 is shown in engagement with a slit or narrow slot 18 made parallel and close to the loweredge of the outer lapping-member 1 1 of the joint; and in Fig. 81 have shown the said concealing-strip as being made with a hook-formation 19 that is disposed outwardly and has anelbow 20 therein, such elbow passing inwardly through the slit or narrow slot 18 made in the outer lappingmember 14 and with said outwardly-turned hook-formation 19 engaged under the lower edge of said lapping member 14 for securing the said concealing-strip in place on the joint coincident with a fastening-nail 2. In each of Figs. 5, 6, 7 and 8, the leadwasher 3 is shown between the nail head and the apex of the joint, and the upper or outer free-end of the strip 15 in each of the views 7 and 8 is lapped or folded over the nail head in the same manner as seen in Fig. 6.

It will be seen. that there is but a slight variation in connection with each of the means of fastening one end of the concealing-strip to the joint, whether direct to the joint itself orto the fastening-nail and all as;

these forms are believed to be comprehended under the preferred form shown in Fig. tand being under claim 1 that shortly follows herein.

In the plan views, 9 to 14, both inclusive,

sidered as giving a little more attractive apiii-2H pearance to the roof when finished than the rectangular form of the other views. The plan views, Figs. 9 to 11, both inclusive,

normal position ready for bendingor fold ing into concealing position over the nail head in each view, and the plan views, Figs. 12 to 14, both inclusive, show the concealingstrips in their final seating or concealing position upon the nail head in each view.

Although the nails used in connection with sheet-metal roofing are roughened or barbed at their lower pointed ends and thereby intended to hold firmly from accidental withdrawal from the sheathing, it is reasonable to assume and state herein that the cap ing or concealing strips shown are each adapted to aid in preventing the displacement or loosening of thenails;

The metal used in the short, narrow transverse concealing-strips can ordinarily be taken from small pieces of scrap material,

although it is obvious it can be made from any strips of sheet-metal of suitable Width and out down to the desired narrow lengths so as to properly lap or fold over the nail I claim 1. In a lapped, inverted-V-shape crimpjoint for sheet-metal roofing having a series of spaced fastening-nails driven through the apex or crown thereof into the sheathing beneath, a similar series of elongated, narrow, transverse, independently-arranged fiat plates or strips of flexible sheet-metal each of which is adapted to be fastened at one end of the crimp-joint but with its re maining length free to be bent over and laid down upon the said fastening-means for concealing the latter and providing a leakagecover for it. either with or without a washer.

2. In a lapped, upright crimp-joint for sheet-metal roofing having a series of fastening-nails driven through the apex or crown thereof into the sheathing beneath, a similar series of narrow, elongated, transverse. independently-spaced fiat strips of flexible sheet-metal each of which is adapted to be connected at one end to the apex of the crimp-joint by means of one of said fastening-nails but free the remainder of its length to be bent over and laid down upon the nail-head for concealing the latter and covering it to avoid leakage around the nail where it enters the joint.

CHRISTOPHER B. EDIVARDS.

Witnesses:

JOHN ELIAS JoN'Es, BERL B. RIGDON.

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