Origin Company, Limited

Nobuyoshi Sawada

Kenji Takeshima

A framing bar connecting method for forming a frame by connecting adjacent framing bars with framing bar connectors. Each framing bar connector comprises: an L-shaped connecting plate having right-angled first and second arms, a slot formed in the first arm and threaded holes formed in the second arm; an L-shaped bottom plate having right-angled first and second arms and an opening formed in the first arm; and a lever provided with a cam at the base end thereof. In assembling a frame, the first arm of the connecting plate and the first arm of the bottom plate are inserted together with the lever in the dovetail groove of one of framing bars, the second arm of the connecting plate and the second arm of the bottom plate are inserted in the dovetail groove of the other framing bar, screws are screwed through the threaded holes of the second arm of the connecting plate to press the second arm of the connecting plate and the second arm of the bottom plate firmly against the inner surfaces of the dovetail groove, and then the lever is turned down so that the nose of the cam catches the bottom surface of the dovetail groove firmly and the cam presses the first arm of the connecting plate firmly against the inner surface of the dovetail groove as the lever is turned.

Framing bar connecting method

A framing bar connector for firmly connecting adjacent framing bars of a frame through a simple action without requiring any special tool. The framing bar connector is formed in the shape of a bifurcate lever having a pair of legs each provided at the respective free ends thereof with eccentric cams, respectively. In assembling a frame, the eccentric cams are inserted in dovetail grooves formed in the backsides of the adjacent framing bars, respectively, and then the bifurcate lever is fully turned down, so that the eccentric cams engage firmly with the respective bottom surfaces of the dovetail grooves and the inner surfaces of flanges defining the dovetail grooves, respectively, to connect the adjacent framing bars firmly.

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Toyama, Japan

Nobuyoshi Sawada