专利名称：Apparatus for making ornamental metal
railings
发明人：Wayne F. Graham申请号：US06/907374申请日：19860915公开号：US04739141A公开日：19880419
摘要：An apparatus for making ornamental metal railings whereby controlled verticalbends in the railing may be made and parallel arrangements of pickets and postsmaintained. One-half of the apparatus may be arced about the other half of theapparatus. The top and bottom rails of a railing are passed through automatic andadjustable guide means to welding zones, one zone for each rail. Pickets and posts areindividually placed into piece holders which position the picket or post against each ofthe rails within the welding zones.
申请人：GRAHAM; WAYNE F.
代理人：John P. McGonagle
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