This invention relates to a weaving heddle frame having lightweight frame staves, each frame having at least one heddle carrying rod located on one side thereof for taking up heddles with laterally open end loops.
In order to achieve a high working speed on modern weaving machines, it is essential that the heddle frame, which moves with the corresponding high frequency of strokes, be as lightweight as possible but nevertheless have the greatest possible bending strength. A high bending strength of the heddle frame, which is essential to keep the stress of the lined-up heddles within limits, could be achieved with frame staves of solid construction. However, in view of the required working speed and high frequency of strokes, it would be difficult to meet the lightweight requirement with such a solid construction. Heddle frames have therefore been made of lightweight construction including frame staves and heddle carrying rods for the heddles forming a single unit and being manufactured of the same material, the frame staves being of hollow construction. The heddle frames may be of light metal or of synthetic material which may be reinforced by fibers or webs.
With frame staves of the aforementioned type, forming a single unit with heddle carrying rods for the heddles, a sufficient resistance to wear and tear cannot however be achieved if, at each stroke of the heddle frame, the heddles with metallic end loops strike against the heddle carrying rod made of a softer material.