Chain sprocket 1 rotates about a fixed axis and is keyed on main shaft A. Rotation is transmitted from sprocket 1 through chain 2 to sprocket 3 which rotates about a fixed axis and is keyed, together with pin wheel 4, on shaft B. Pin wheel 4 carries pin a which consecutively engages the slots of Geneva wheel 5. Geneva wheel 5 rotates intermittently about a fixed axis and is keyed, together with bevel gear 6, on shaft C. This intermittent rotation is transmitted through bevel gear 17, meshing with gear 6, worm 7, worm wheel 8 and gears 9, 10 and 11, to feed roller 12, rigidly attached to gear 11. When roller 12 rotates, the warp is unwound from warp beam 13 with a small tension produced by the rope brake. The warp runs over roller 12, auxiliary roller 14 and member 15 to the harness (not shown). The rate of feed is varied by changing gear 10. The stud on which gears 9 and 10 are keyed is carried by quadrant 16 which can be swung when required about the axis of gear 8 so that the new gear 10 (after changing) engages gear 11.
$2657$PG,FD$