Method and apparatus for constructing stairways

Details Method and apparatus for constructing stairways Method and apparatus for constructing stairways

1988-03-23

1989-07-11

Bray, W. Donald

Metal working

Means to assemble or disassemble

Multiple station assembly or disassembly apparatus

29DIG48, 144136B, 228 443, 269 37, 269 45, 269 56, 269910, B23P 1900, B23K 3700

Patent

active

048458414

ABSTRACT:
A stairway fabricating apparatus includes a structural machine frame that can support an elongated linear stringer work piece thereupon. A plurality of tread supports include multiple work stations which are movably supported by the frame for simultaneously supporting multiple, selectively pre-spaced stair-step treads in a position against the stringer so that the tread and stringer can be connected to define thereafter horizontal stair-step positions of staircase treads that are of a pre-selected spacing and of a pre-selected angular position with respect to the stringer. Connection of the treads to the stringers can be accomplished by welding, for example, once the correct linear spacing and the correct angular position of the treads are selected.

REFERENCES:
patent: 4673011 (1987-06-01), Lapeyre et al.

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