US2071687A

US2071687A - Flashing

Info

Publication number: US2071687A
Application number: US49279A
Authority: US
Inventors: Friedberg Leo
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-11-11
Filing date: 1935-11-11
Publication date: 1937-02-23
Anticipated expiration: 1954-02-23

Description

L. FRIEDBERG Feb. 23, 1937.

FLASHING Filed Nov. 11, 1935 Patented Feb. 23, 1937 UNITED STATES PATENT OFFICE FLASHING Leo Friedberg, New Brunswick, N. J. Applicationv November 11, 1935, Serial No. 49,279

14 Claims. (01. 72-427) My invention relates to improvements in through wall flashings, constructed of sheet metal or other relatively stifi water impervious sheet material, the sheet being formed at intervals with transversely extending ribs of the general transverse configuration described and claimed in my co-pending application Serial No. 12,695, filed March 23, 1935, now Patent 2,041,329, issued May 19, 1936, whereby the sheet is strengthened transversely and mortar bonding means provided in the strengthening ribs above the water-draining means of the sheet.

While various means have been employed or proposed for the strengthening of through wall 5 flashing sheets and efiecting positive interlocking of the sheet and mortar layers, without producing sharp bends in the sheet, no means has heretofore been provided for adequately preventing the accumulation of water upon the surface of the flashing sheet, and particularly adjacent the turns or bends in which cracks may occur. The prior art has failed'to recognize the importance of providing means for the drainage of water, both longitudinally and transversely of the sheet and combining with such means a weep hole forming means for rapidly discharging the water to the outer surface of the Wall in which the flashing is installed.

The present invention therefore has for its object to provide for improved water drainage in a flashing of the character herein described by spacing the strengthening and mortar bonding ribs a substantial distance longitudinally of the sheet and gradually inclining the intermediate portions of the sheet, between successive ribs, so that water is drained both longitudinally and transversely of the sheet between'each pair of ribs.

A further object of my invention is to provide a flashing of this character in which the minimum number of bends occur to effect strengthening and bonding of the sheet to the mortar, and also provide means for draining water away from such bends and to the outer surface of the wall in which the flashing is imbedded in the manner shown in the patent to A. B. Friedberg et al., No. 1,992,819, issued Feb. 26, 1935. In the instant case, weep hole forming wicks are shown secured to the surface of the sheet at the low points between the ribs to provide the rapid and effective means for draining off water received from the relatively long and gradual longitudinal slopes between the ribs.

Other objects and advantages will be apparent 55 from the following description taken in connection with the accompanying drawing, in which- Fig. 1 is a longitudinal sectional view of a portion of v a flashing strip embodying my invention;

Fig. 2 is an enlarged view of a part of the strip illustrated in Fig. 1 showing in perspective one of the transverse strengthening and mortar bonding ribs and the adjoining oppositely inclined water draining surface portions of the strip; i

Fig. 3 is a view similar to Fig. 1 showing the flashing strip in reversed position to illustrate the usefulness of the improved strip in draining water both longitudinally and transversely thereof, irrespective of which side of the strip is uppermost;

Fig. 4 is an enlarged view similar to Fig. 2 showing the manner of attaching weep hole forming wicks to that face of the strip.

In the drawing, the flashing strip is designated by the numeral 5 and comprises a sheet of relatively stiff waterproof material, such as sheet copper, bent at regular intervals to form transversely extending ribs 6. lhe intermediate portions of the strip between the ribs are oppositely and gradually inclined from a point I intermediate each pair of ribs 6 to the bases of the ribs to form longitudinally inclined water-draining surfaces 8 and 9. When the flashing strip 5 is to be used in the position illustrated in Fig. l, a weep hole forming wick, comprising a ropelike member I0 is secured transversely of the strip at the juncture 1 of the inclined surface portions 8 and 9, by means of suitable clips II which are soldered or otherwise attached to the strip. 1

It will be seen, however, that when the flashing strip is to be used in the reversed position, as illustrated in Figs. 3 and 4, that Wicks ID are secured transversely of the strip at the junctures of the inclined surfaces 8 and 9, with the relatively steep oppositely inclined walls l2 and I3 of the transversely extending strengthening and mortar bonding ribs 6. As was described in connection with the showing in Fig. 1, the wicks Ill are secured to the strip by means of suitable clips designated as H in Fig. 4.

The ribs 6 which extend transversely across the flashing strip are preferably of the transverse cross-sectional configuration Shown and described in my co-pending application Serial No. l2,695,'flled March 23, 1935, i. e., one of the relatively steep inclined walls I3 of the ribs 6 is bent inwardly, intermediate its upper and lower edges, towards the oppositely inclined wall 12 to provide a substantially horizontal mortar bonding key or rib M, which rib may extend from end to end of the primary strengthening rib 6.

In use the primary ribs 5 function, when the strip is imbedded in a motar layer, to strengthen the strip transversely and prevent longitudinal and transverse movement of the flashing section, and the secondary ribs or keys M, which are carried by a wall of the primary ribs in spaced relation to the water-draining surface portions of the strip, prevent vertical movement of the flash- While I have shown and described but one embodiment of my invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made which do not depart from the spirit and scope of my invention, as covered by the appended claims.

I claim:

1. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs the bases of the side Walls of which are spaced longitudinally of the sheet, and relatively long longitudinally inclined water-draining surface portions joining the spaced bases of each of said rib walls, the said walls being angularly arranged with respect to the water draining surface portions.

2. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs having spaced angularly disposed walls, and relatively long oppositely inclined water-draining surfaces joining the bases of said rib walls and being angularly arranged with respect thereto.

3. A through wall flashing comprising a sheet of metal formed with transversely extending strengthening ribs having relatively short side Walls and relatively long longitudinally inclined water-draining surface portions joining the side walls of said ribs and being angularly arranged with respect thereto, and certain of said side walls of said ribs being bent intermediate the base and peak of the ribs out of the plane of said walls to form mortar bonding keys.

4. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs and relatively long longitudinally inclined water-draining surface portions joining the bases of said ribs, and a transversely extending weep hole forming means carried by said sheet at the juncture of an inclined surface portion and rib.

5. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs and relatively long oppositely inclined water-draining surface portions joining the bases of said ribs, and a transversely extending weep hole forming means carried by the sheet at the juncture of the oppositely inclined water-draining surface portions.

6. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs and relatively long longitudinally inclined water-draining surface portions joining the bases of said ribs, a weep hole forming means extending transversely of the sheetat the juncture of an inclined surface portion and rib, and a mortar bonding means carried by said rib in vertical spaced relation to said weep hole forming means.

'7. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs and relatively long oppositely inclined Water-draining surface portions joining the bases of said ribs, a transversely extending weep hole forming means carried by the sheet at the juncture of the oppositely inclinedsurface portions, and a mortar bonding means carried by a wall of said ribs in spaced relation to said inclined surface portions.

'8. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs and longitudinally inclined waterdraining'surface portions joining the bases of said ribs, the width of said ribs at their bases being relatively small as compared to the length of the inclined portions between the bases of said ribs and the walls of the ribs being angularlyarranged with respect to the adjoining inclined portions.

9. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs which are spaced by longitudinally inclined water-draining surface portions joining the bases of said ribs, the walls defining said ribs being spaced at their bases a relatively small distance as compared to the length of said inclined surface portions and angularly arranged with respect to said inclined portions, and a wall of each rib having a substantially horizontal mortar bonding rib extending toward the opposing wall of said strengthening rib.

10. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs and oppositely inclined Water-draining surface portions extending longitudinally between the bases of said ribs, the width of the ribs at their bases being relatively small as compared to the length of the intermediate inclined portions, a weep hole forming means extending transversely of the sheet at the juncture of said oppositely inclined portions, and a wall of each rib having a substantially horizontal mortar bonding rib extending toward the opposing wall of the rib at a point above said weep hole forming means.

11. A reversible through wall flashing section comprising a sheet of metal having transversely extending strengthening and mortar bonding ribs arranged at spaced intervals longitudinally of the section, the portions of the sheet between the ribs being of substantially greater longitudinal extent than the width of said ribs at their bases and oppositely inclined from a point intermediate said ribs to their juncture with the bases of said ribs, and transverse weep hole forming means secured to the water-draining surface portions of said sheet.

12. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs spaced by relatively long longitudinally inclined water draining surface portions, and the Walls defining the ribs being relatively short and angularly disposed with respect to the water draining surface portions and bent intermediate their height out of the plane of the rib walls to provide mortar bonding keys.

13. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs spaced by relatively long longitudinally inclined water draining surface portions, the walls defining the ribs being relatively short and angularly disposed with respect to the water draining surface portions and bent intermediate their height out of the plane of the rib walls to provide mortar bonding keys, and a transversely extending weep hole forming means carried by the longitudinally inclined water draining surface portions of the sheet.

14. A through wall flashing comprising a sheet of metal having transversely extending strengthening ribs and relatively long longitudinally inclined water draining surface portions joining the relatively short angularly arranged walls of said ribs, and a transversely extending weep hole forming means carried by said longitudinally inclined water draining surface portions.

LEO FRIEDBERG.