Method and apparatus for fabricating arcuate wooden structures

Details Method and apparatus for fabricating arcuate wooden structures Method and apparatus for fabricating arcuate wooden structures

1992-08-20

1994-03-15

Bray, W. Donald

Woodworking

Process

Securing

1442561, 144263, 144266, 144348, 144352, 156443, 269 81, 269 93, 269297, 269318, 269319, B27D 100, B27N 100

Patent

active

052939618

ABSTRACT:
An apparatus for fabricating arched wooden structures such as headers for window and door jambs, said apparatus comprising a mandrel table having a planar bed from which a plurality of rigid arms upwardly extend. Each of the arms is movable on the bed so that the arms can be positioned to define and form in conjunction with each other an arcuate shaped mandrel about which wooden planks are to be bent into arched structures. A clamp secures a long work piece at its center to the mandrel intermediate the ends of the mandrel and a flexible steel band is wrapped tightly and progressively about the mandrel on either side of the clamp to bend each end section of the work piece about and conform it to the shape of the mandrel.

REFERENCES:
patent: 927975 (1909-07-01), Kaufman et al.
patent: 1052405 (1913-02-01), Breece
patent: 2350915 (1944-06-01), Miller
patent: 4688612 (1987-08-01), Kessel et al.
patent: 4711281 (1987-12-01), Kessel et al.
patent: 4886568 (1989-12-01), Strozier
patent: 4967816 (1990-11-01), Postema

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