Supporting bar of a heddle frame
AssigneeGrob & Co. Aktiengesellschaft
InventorBernhard Koch
Life of this patent
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Abstract
A supporting bar of a heddle frame comprises a hollow body and a connecting part (2) adjoining at a narrow side of the hollow body the support of the heddle carrying rod (3) located at its end. The supporting bar including these parts forms a welded structure comprising planar sheet metal section (4-14) forming walls of such parts. Relatively thin sheet metal section (5, 6, 9, 10) forming longitudinally extending broad side walls are welded to sheet metal sections (4, 7, 8, 11, 12) having a considerable larger material thickness and forming longitudinally extending narrow side walls. The planar sheets are welded together by the use of laser welding to form the supporting bar which has a light weight and high alternate bending strength.
Claims8
In a heddle frame assembly for a loom of the type which includes upper and lower supporting bars vertically spaced by side frame members, said supporting bar comprising a frame stave and a heddle carrying rod and a connecting part for connecting said carrying rod to said frame stave to extend at a distance parallel to said frame stave, said frame stave forming a hollow body and having longitudinal narrow sides and broad sides and a substantially rectangular outer cross-section wherein said frame stave, said connecting part and said heddle carrying rod comprise sheet metal sections and form a welded structure, said longitudinal broad sides of said frame stave comprising thin sheet metal sections welded to said frame stave narrow sides, said narrow sides having a material thickness several times greater than that of said broad sides, said connecting part being welded to one of said frame stave narrow sides, and the heddle carrying rod being welded to said connecting part via a rod located between said connecting part and said heddle carrying rod.
Dependencies are inferred from the claim text.