Abstract: A spring wire member for retaining insulation against a building panel supported upon spaced apart flanged metal beams. The member, when in an unloaded condition, contains three parallel legs that are joined by semi-circular elbows including a center leg having a length that is substantially greater than the space between adjacent beams and two end legs each of which having a length that is slightly greater than the space between the beams whereby the member can be obliquely positioned inside the flanges of adjacent beams and the end legs extended to a position normal to the center leg whereby the extended member is loaded in biasing contact against the adjacent beams.

Abstract: A quick-set button or clip formed of a strip of spring metal has the general shape of the Greek letter omega, and joins halves of a two-part sheet metal beam or joist. The clip has an insertion bight formed at one end of a main elongated portion, and a Vee spring arm at the other end. The insertion bight has an offset portion, an outward leg and a return leg, and a diagonal portion that extends to a stub located at the underside of the main portion. The insertion bight and the Vee spring arm are inserted into corresponding aligned slots in the sheet metal web of the beam or joist, and spring action of the quick set button or clip holds the clip and the joist or beam forming members securely together.

Abstract: A roof system comprises roof support members, such as rafters and purlins, to which truss members are connected. These members are formed as sheet metal beams. The truss members are joined to the other members by spring truss pins or clips. These clips are generally formed as a spring bight having first and second legs, with key portions formed at the free end of the legs. The key portion of the first leg includes an indentation which faces away from the second leg, and a short stub member. The second leg key portion includes an offset which extends transversely in the direction towards the line of the first leg, and a stub member which extends in the direction generally parallel to the second leg.