Wood joint
First Claim
1. A joint at one end of a rail and a stile angularly joined together to form a corner of a wooden frame, said rail and stile each comprising a substantially elongated body having a pair of facial surfaces spaced apart by side edge margins forming inner and outer edge surfaces of the frame, the facial surfaces of said rail being coextensive with a respective facial surface of said stile at the joint, the wood grain structure of each of said rail and stile lying in the respective facial surface and extending generally transverse to said joint, and at least one of the facial surfaces of said rail abutting the corresponding facial surface of said stile at a curvilinear edge.
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Abstract
A rail and stile member of a wood frame is joined at a curvilinear edge at abutting facial surfaces. In a number of embodiments the members have a tenon and mortise connection behind the curvilinear edge. In one embodiment a three piece joint is formed with curvilinear edges at each pair of abutting facial surfaces. The method of forming the joint includes the forming of a guide template having the desired configuration but displaced from the joint line and cutting of the rail and stile with a router tool of a preselected bit size.
12 Citations
9 Claims
- 1. A joint at one end of a rail and a stile angularly joined together to form a corner of a wooden frame, said rail and stile each comprising a substantially elongated body having a pair of facial surfaces spaced apart by side edge margins forming inner and outer edge surfaces of the frame, the facial surfaces of said rail being coextensive with a respective facial surface of said stile at the joint, the wood grain structure of each of said rail and stile lying in the respective facial surface and extending generally transverse to said joint, and at least one of the facial surfaces of said rail abutting the corresponding facial surface of said stile at a curvilinear edge.
- 6. A method of forming a joint between a rail and a stile of a frame structure such that facial surfaces of the rail and stile are coextensive and abut at an edge having a curvilinear configuration, said method comprising cutting said edge in each of said rail and stile with a router tool having a rotatable cutting bit of a radius rc, the cutting of one of said rail and stile being performed while guiding said router tool along a guide template by following said guide template with a first annular guide member having a guide surface of a radius r1 concentric about said cutting bit and the cutting of the other of said rail and stile being performed while guiding said router tool along said guide template by following said guide template with a second annular guide member having a guide surface of a radius substantially equal to r1 +2rc concentric about said guide surface, said method including the step of forming said guide template with the same configuration as said curvilinear edge but displaced from said edge by a distance substantially equal to the sum of the radius of the cutting bit (rc) plus the radius of the first annular guide member (r1).
Specification