Abstract: The invention is directed to a composite-type paper making wire or screen, comprising an upper or forming fabric and a lower or wear fabric including at least three sets of longitudinal threads and at least two sets of cross threads. Due to the imperfect nature of the paper-facing surface which results in all kinds of markings in the paper, paper making screens of this type are unsuited for the manufacture of fine papers. To eliminate this drawback, the screen is formed in such a way that at least half of all outwardly disposed longitudinal knuckles of the upper fabric (paper-facing side) of the screen are formed of two sets of longitudinal threads and that the first set of longitudinal threads is woven with the first set of cross threads, the third set of longitudinal threads is woven with the second set of cross threads, and at least portions of the second set of longitudinal threads are woven with both sets of cross threads.

Abstract: A loom wherein several gripper shuttles advance simultaneously along an endless path has a track with an arcuate section extending along an arc of 180 degrees ahead of the inlet to the shed. Shuttles are temporarily stored in a magazine ahead of the arcuate section and are propelled into the arcuate section and into the range of an accelerating conveyor in synchronism with movements of the reed toward and away from the fabric. The accelerating conveyor is driven by a variable-speed motor to advance a freshly engaged shuttle first at a low speed and to thereupon accelerate the shuttle to a maximum speed not later than on entry of the shuttle into the open shed. The shuttles have guide rails, guide faces and/or guide rollers which cooperate with complementary guide elements of the reed to prevent the ejection of shuttles during travel through the shed.