The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 1985
Filed:
Sep. 28, 1983
John D West, Manitowoc, WI (US);
James E Trainor, Manitowoc, WI (US);
James D Karman, Manitowoc, WI (US);
The Manitowoc Company, Inc., Manitowoc, WI (US);
Abstract
A submerged arc welding machine in which the edges of plates to be butt welded are supported on a channel fixed on a long rigid foundation beam. The plates are otherwise held on inverted caster wheel assemblies. A long rigid bridge spaced above the beam carries a track on which the arc welding apparatus carriage rides. The plate edge portions are held by vertically movable electromagnets, and the channel forms a magnetic shield so that the magnets do not affect the welding arc. Vertically movable rollers allow the plates to be positioned without interference from the channel. A copper backup bar in the channel has a groove that is filled with flux, and the bar is raised to hold the flux under the weld line. A shoe on the carriage lays flux in the groove when the carriage returns after a welding pass, and a vacuum pickup head cleans the groove for the shoe flux delivery. During the welding pass, the pickup head removes flux on opposite sides of the weld.