Method of joining bodies of green lumber by finger joints

Details Method of joining bodies of green lumber by finger joints Method of joining bodies of green lumber by finger joints

1976-02-11

1976-10-12

Spruill, Robert Louis

Woodworking

With use of control means energized in response to activator...

Including use of sensor responsive to information carried by...

144309L, 144314B, 144327, 156258, 156304, 156322, B27D 110

Patent

active

039851699

ABSTRACT:
Green lumber bodies are finger jointed together, using a heat curable adhesive for wood, by forming fingers on the lumber bodies, heating and drying the lumber bodies until the fingers only are dried to a moisture content of less than 50 percent (oven dry basis), cooling the fingers to which the adhesive is to be applied to prevent precure thereof, and applying the adhesive to these fingers, and then pressing the bodies together at a pressure greater that 150 p.s.i. to interlock the fingers until the adhesive is cured. Heat stored in the lumber bodies is transferred therefrom to the fingers to cure the adhesive. The adhesive may be a phenol resorcinol resin glue.

REFERENCES:
patent: 3126308 (1964-03-01), Brockerman et al.
patent: 3802986 (1974-04-01), Forsythe

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