Patterns for a coupler yoke casting

Details Patterns for a coupler yoke casting Patterns for a coupler yoke casting

1979-04-19

1985-03-05

Godici, Nicholas P.

Metal founding

Means to shape a forming surface

Pattern

164249, B22C 704

Patent

active

045025258

ABSTRACT:
The drag pattern and the cope pattern for a standard AAR coupler yoke are each mounted on a pattern plate to form an oblique angle of about 1.degree. between the mounting surface of the pattern plate and a plane parallel to a longitudinal center plane of the pattern. The patterns each include core print surfaces for establishing the position of one unitary core which is used in a sand mold to form surfaces in the coupler yoke at the front end portion thereof. The drag pattern includes pattern surfaces to mold sand to form the surfaces surrounding the draft gear pocket on the upper and lower straps and the rear draft gear seat at the rear end portion of the yoke. The draft gear seat is generally planar and perpendicular with each inside wall of top and bottom straps.

REFERENCES:
patent: 1555999 (1925-10-01), Loveless
patent: 4138086 (1979-02-01), Mizutani et al.

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