Slip bracket connector for rigid members
A one-piece rigid connector allows a nominal construction wood member to slip axially while fixed at its distal end, to accommodate the naturally occurring shrinkage of lumber. The connector surrounds the wood member and attaches to a second wood member to secure the members together. The connector may be slightly larger radially than the first member to accommodate natural movement. In one embodiment, the connector is made of a light gauge sheet metal and attaches a vertical baluster to the horizontal lower deck rail of an elevated wood deck guard rail system. The connector secures the baluster horizontally, but allows the baluster to move vertically to accommodate expansion or contraction of the baluster after construction. The distal end of the baluster is secured using conventional wood screw attachment. The connector includes tabs on each side to allow fastening of the connector to the lower deck rail using conventional wood screws.
1. A device for attaching a first wood member to a second wood member, the device comprising:
a three-sided brace including a planar front portion and planar left and right portions attached to opposing edges of the front portion and defining a proximal end and a distal end of the brace that are each open, the left, front, and right portions leaving a clearance gap between the brace and the first wood member, the clearance gap permitting natural dimensional fluctuations of the first wood member; and
at least two tabs, one of the tabs attached to the left portion of the brace and another of the tabs attached to the right portion of the brace, each of the tabs including a first section projecting from the respective left or right portion of the brace and a second section projecting from and angularly transverse to the first section, such that the first section of each tab makes flush contact with the second wood member, and wherein only the first section or the second section of each tab has at least one aperture disposed through the tab for receiving a fastener.
2. The device of claim 1 wherein the brace extends around three sides of the first wood member.
3. The device of claim 2 wherein the brace is u-shaped.
4. The device of claim 3 stamped out of a single piece of sheet metal and bent into form.
5. The device of claim 1 wherein the fasteners are driven through the apertures into the second wood member to secure the device to the second wood member.
6. The device of claim 1 wherein the first section of the tab attached to the left portion of the brace is coplanar with the first section of the tab attached to the right portion of the brace.
7. The device of claim 6 wherein each tab comprises a parallel section attached to the brace, and a perpendicular section attached to the parallel section and extending perpendicular to the parallel section.
8. The device of claim 7 wherein at least one of the apertures in each tab is positioned on the perpendicular section.
9. The device of claim 8 stamped out of a single piece of sheet metal.
10. The device of claim 1 wherein the first wood member is a baluster.
11. The device of claim 10 wherein the baluster is rigidly attached at one end to a third wood member.
12. The device of claim 1 wherein the natural dimensional fluctuations include a longitudinal expansion of the first wood member.
13. The device of claim 1 wherein the natural dimensional fluctuations include a slip movement in a longitudinal direction along the first wood member.