Machine for weaving face to face fabrics
AssigneeN.V. Michel Van de Wiele
InventorCarlos DeRudder
Life of this patent
Estimating the term…
Abstract
A Jacquard machine for weaving face-to-face fabrics consisting of a bottom fabric and a top fabric between which pile threads are stretched, incorporating two systems, one for each fabric. For each pile thread, the machine incorporates a selection element with hooks under the action of knives, a cord which is connected to one of the hooks, a lifting device, and a grate which is driven together with one of the knives. The invention enables pile warp threads to be taken into more than three different positions with the aid of a single selection element, thereby reducing the cost and size of the Jacquard machine.
Claims20
Jacquard machine, which when coupled with a selection device is capable of positioning pile threads in at least four positions for weaving face-to-face fabrics consisting of a first fabric and a second fabric, between which the pile threads are stretched, a first series of pile threads being provided for binding into the first fabric, and a second series of pile threads being provided for binding into the second fabric, which machine comprises:
- a selection element, having:
- a first set and a second set of two vertically movable knives, said two knives of each set being adapted to move in counterphase,
- a first set of complementary hooks per first set of knives and a second set of complementary hooks per second set of knives, said first set of complementary hooks and said second set of said complementary hooks each comprising a first hook and a second hook, said first and second sets of hooks being adapted to engage said first and second sets of knives, respectively, in one of first and second modes, whereby said hooks move with said knives in said first mode of engagement and whereby said hooks are held in a desired stationary position by said selection device in said second mode of engagement;
- a first system, for weaving said first pile threads into said first fabric, said first system comprising
- said first set of knives,
- said first set of complementary hooks,
- a first pulley-and-cord element per first set of complementary hooks, which first pulley-and-cord element comprises:
- a first movable lifting element having a top roller and a bottom roller,
- a first lifting cord, one end of the first lifting cord being fixed to said first hook of said first set of complementary hooks and the other end being fixed to said second hook of said first set of complementary hooks, a downward-hanging portion of said first lifting cord running under said top roller of said first movable lifting element thereby suspending said first movable lifting element,
- a first reversing roller, and
- a first position cord attached at one end to one of said first hook and said second hook of said first set of complementary hooks, a portion of said first position cord hanging below said first movable lifting element and running under said first reversing roller and running up to and over the bottom roller of said first movable lifting element, the other end of said first position cord hanging below said first reversing roller to said first series of pile threads;
- a vertically movable first grate, which is below said first set of knives and to which is fixed said first reversing roller, and
- means for moving said first grate with one of said first set of knives;
- and
- a second system, for weaving said second pile threads into said second fabric, said second system comprising
- said second set of knives,
- said second set of complementary hooks,
- a second pulley-and-cord element per second set of complementary hooks, which second pulley-and-cord element comprises:
- a second movable lifting element having a top roller and a bottom roller,
- a second lifting cord, one end of the second lifting cord being fixed to said first hook of said second set of complementary hooks and the other end being fixed to said second hook of said second set of complementary hooks, a downward-hanging portion of said second lifting cord running under said top roller of said second movable lifting element thereby suspending said second movable lifting element,
- a second reversing roller, and
- a second position cord attached at one end to one of said first hook and said second hook of said second set of complementary hooks, a portion of said second position cord hanging below said second movable lifting element and running under said second reversing roller and running up to and over the bottom roller of said second movable lifting element, the other end of said second position cord hanging below said second reversing roller to said second series of pile threads;
- and
- a vertically movable second grate, which is below said second set of knives and to which is fixed said second reversing roller;
- and
- means for moving said second grate with one of said second set of knives.
Dependencies are inferred from the claim text.