Abstract: A picking comb, particularly for jet looms. The comb has an array of active, monitoring and passive guide teeth each having a picking portion and a mounting portion and fixed by its mounting portion in spaced side-by-side releation on a carrier means. At least one of said guide teeth has its picking portion separate from its mounting portion. The picking portion is provided with a connecting element fitting into a corresponding bore in the mounting portion. Correct positioning of the two portions is assured by interfitting positioning parts and a clamping element. The detachable connection between the picking portion and the mounting portion of a tooth makes it easier to replace a defective picking portion without the necessity of removing the whole picking channel or a section thereof.

Abstract: There is disclosed a control mechanism for the sand rollers of looms. The output of the cloth take-up motion of a loom is drivingly connected to a first input shaft of a differential gearing mechanism, and the second input shaft of the differential gearing mechanism is drivingly connected to the output shaft of an electric motor. The electric motor is under the control of a mechanism which selectively permits its starting and stopping. The output shaft of the differential gearing mechanism is drivingly connected to the sand roller. The electric motor is preferably of the reversible type, the means for controlling the motor then including means for selectively reversing the motor. During the ordinary operation of the loom, the sand roller is driven by the cloth take-up motion through the differential mechanism, the electric motor being then switched off and locked.