6.0.7 Top bows & brackets
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6.0.7 Top bows & brackets
GPW top bows are formed of 1” diameter heavy walled steel tubing. The radiused corners of the bows are smoothly formed, with no “cave in” on the outer edge of the radius. Tubing ends are swaged over a reinforcement piece so that an end-on view of the end shows 3 layers of steel. The two bow tubes are riveted at the hinge and there is usually a script f on the secondary bow on the inside, near the swaged end.
Top bow swivel brackets are formed of heavy gauge steel and striations are visible on the surface of original pieces from the stamping process. Reproductions do not have these striations. Swivel brackets are stamped with a prominent script f.
Top bow swivel castings are marked with a script and GPW 1151270.
Top bow retainer brackets (also called “hand rail brackets”) are made from 16 gauge steel and machine forming striations are apparent where the top loop is formed. Left and right brackets are different as the position of the locating rivet is different for left and right. Both left and right bracket stampings have holes for both rivet positions. These brackets have a prominent script f near the screw holes.
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