End detail for ceiling runner

An end detail for a ceiling runner wherein the ceiling runner has a vertical web with two horizontal flanges oppositely displaced on either side of the vertical web at the base of the vertical web, said vertical web being formed from two pieces of sheet metal being in an abutting side-by-side relationship, from at least one end of the vertical web there extends integral with the vertical web a tongue in the plane of the vertical web, but with a height less than the height of the vertical web, said tongue being spaced above the horizontal flanges and extends beyond the ends of the horizontal flanges, said tongue at its terminal end being formed with a tapered end, a tab extending from the tongue, said tab having a base, a resilient end and two sides, the tab being cut in part from the two pieces of sheet metal forming the tongue, the base of the tab being uncut from the tongue and being positioned near the terminal end of the tongue, the resilient end and two sides of the tab being cut from the tongue whereby the resilient end can project at an acute angle to the plane of the tongue in the direction away from the terminal end of the tongue, said resilient end having a straight terminal edge, and the tongue having a projection extending therefrom in the plane of the tongue, said projection being positioned near the point where the tongue is integral with the vertical web, said projection having a contact edge extending perpendicular to the plane of the horizontal flanges and being parallel to and spaced from the straight terminal edge of the resilient end of the tab, the improvement comprising:

• (a) a means positioned near the base of the tab displacing a portion of the tongue metal laterally within the plane of the tonge behind the tab near its base whereby the displaced metal laterally behind the tab locks the two metal pieces of the tongue together.