Woodworking – Wood bending press
Patent
1988-02-03
1988-12-27
Bray, W. Donald
Woodworking
Wood bending press
100237, 156581, 1442564, B27H 100
Patent
active
047933925
ABSTRACT:
A bending device for curving sheet-like members, comprising a row of double roller clamp means, each having a pair of parallel rollers adapted to receive and clamp the sheet-like member therebetween. Hinge means are located between each adjacent pair of clamp means for hingeably coupling each clamp means to an adjacent clamp means. Actuating means are provided, connected between each adjacent pair of clamp means, which are operable to cause pivoting of the double roller clamp means about the hinge means, thereby curving the row of clamp means, and accordingly the sheet-like member clampingly held by each of the clamp means. In a preferred embodiment, the clamp means are laterally displaceable along the hinge means relative to an adjacent clamp means, to allow alignment of the clamp means along a diagonal. In a further preferred embodiment, the actuating means comprises pairs of pistons pivotally connected between adjacent pairs of clamp means in non-parallel relation to each other, so that the pair of pistons may cause a desired amount of pivoting about, and lateral displacement along, the hinge means.
REFERENCES:
patent: 51826 (1866-01-01), Griffiths
patent: 829125 (1906-08-01), Romunder
patent: 965927 (1910-08-01), Nichols
patent: 977804 (1910-12-01), Knilans
patent: 2335488 (1943-11-01), Bergstrom
patent: 2399348 (1946-04-01), Hobbs
patent: 2431353 (1947-11-01), Varner et al.
patent: 2662564 (1953-12-01), Payzant
patent: 2766787 (1956-10-01), Knowles
patent: 3027923 (1962-04-01), Schreiber
Bray W. Donald
Oakridge Railing and Stair Company Inc.
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