Stairs and method of making the same

Details Stairs and method of making the same Stairs and method of making the same

1978-02-02

1979-05-15

Murtagh, John E.

Static structures (e.g., buildings)

Stepped; e.g., stair

Tread unit on horizontal tread member connected to riser

52741, E04F 1110

Patent

active

041540328

ABSTRACT:
A construction for wooden stairs that provides for rapid layout and assembly of the stairs by using an interlocking technique that locks the treads and risers into the stringers without the use of fasteners, adhesives or wedges. The construction technique and the resulting unique stairs substantially reduces the layout and assembly time from that required by conventional stairs by accurately machining the required dovetail grooves in the stringers and the corresponding male dovetail on each tread and riser end. Each tread and riser are then slid into place in the stringers and are interlocked so that once the stairs are assembled and interlocked, it is impossible for the components to become separated.

REFERENCES:
patent: 1893876 (1933-01-01), Anderson
patent: 3393481 (1919-07-01), Meuret

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