Assembly fixture for stair stringer weldments and the like

Details Assembly fixture for stair stringer weldments and the like Assembly fixture for stair stringer weldments and the like

1985-12-05

1986-12-16

Schmidt, Frederick R.

Metal working

Means to assemble or disassemble

With work-holder for assembly

228 491, 269 40, 269 41, B23K 3704

Patent

active

046285776

ABSTRACT:
An adjustable, low cost fixture for the production of stair stringer weldments of the type including a channel beam or the like and a plurality of carrier angle elements welded thereto for the support and positioning of tread and riser elements in the completed stair. The fixture includes an elongated reference beam, and means to clamp the reference beam to a flange of the channel member at an adjustable level from the edge of the channel. A plurality of carrier angle nesting blocks are individually clamped to the reference beam at spaced points along its length and in a predetermined angular orientation relative thereto. The nesting blocks are provided with notched out portions for receiving and positioning the carrier angle elements during welding thereof to the channel beam. Removable spacing and angle gages enable a series of nesting blocks to be clamped to the reference beam with a highly uniform spacing and angular orientation, significantly improving product quality and enabling great savings to be realized in production economies.

REFERENCES:
patent: 3062529 (1962-11-01), Hiller
patent: 3823910 (1974-07-01), Crozier
patent: 3902948 (1975-09-01), Morros

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