Method and apparatus for simultaneous edge bending of stair rail

Details Method and apparatus for simultaneous edge bending of stair rail Method and apparatus for simultaneous edge bending of stair rail

1976-11-22

1977-10-25

Mehr, Milton S.

Metal deforming

By use of roller or roller-like tool-element

Comprising tool movable relative to stationary work-portion...

72217, B21D 703

Patent

active

040550656

ABSTRACT:
A method and apparatus is disclosed for simultaneously bending a length of handrail channel stock and handrail cap stock in an iron bender with a main frame and a swing frame, which comprises the steps of fitting the channel stock, with a length of flat stock inserted between its flanges, into the recessed underside of the cap stock, and bending the resultant assembly in a bender fitted with appropriately grooved back block, forming die and drawing block.

REFERENCES:
patent: 1061067 (1913-05-01), Grady
patent: 2399892 (1946-05-01), Sato
patent: 3763685 (1973-10-01), Fjellstrom

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