摘要:
A shed forming device for a weaving machine comprising motion systems consisting of hooks that are moveable up and down, transmission elements to transmit the hook motion to a carrier for warp threads, a first force element to exert a downward-directed force on the carrier, and an energy buffer and a second force element to exert a force on an element of the motion system that results in an upward-directed force on the carrier so that the element is so deformed or displaced that the elements of the motion system are kept under tension.
摘要:
The invention relates to a shed forming device, comprising means provided to position warp yarns in order to form a shed in accordance with a pattern to be woven, before inserting a weft through this shed, the positioning of the warp yarns being the possible cause of an increase or a decrease of potential energy in the shed forming device, one or several elements being added, which may be able to compensate partly or entirely the decrease or increase of potential energy which is produced in the situation of the shed forming device, before adding the said elements to the shed forming device, and the said elements being incorporated in the shed forming device in such a manner, that the decrease or increase of potential energy will be performed by the said elements, in a manner independent of the positioning of the warp yarns. Furthermore the invention relates to a weaving machine comprising such a shed forming device.
摘要:
A shed forming device for a weaving machine comprising motion systems consisting of hooks that are moveable up and down, transmission elements to transmit the hook motion to a carrier for warp threads, a first force element to exert a downward-directed force on the carrier, and an energy buffer and a second force element to exert a force on an element of the motion system that results in an upward-directed force on the carrier so that the element is so deformed or displaced that the elements of the motion system are kept under tension.
摘要:
A shed forming device positions warp yarns in order to form a shed in accordance with a pattern to be woven, before inserting a weft through this shed. The positioning of the warp yarns is one potential cause of an increase or a decrease of potential energy in the shed forming device. One or several elements is added to compensate, by their change of state, partly or entirely for the decrease or increase of potential energy which is produced in the shed forming device by the positioning of the warp yarns. The change of state of the elements is effectuated without any coupling with the positioning of individual warn yarns. A weaving machine uses such a shed forming device.
摘要:
Springs associated with a harness of a weaving loom of the Jacquard type are connected on a frame of the loom by an assembly of devices each of which includes a plurality of rods each being connectable with a spring and which rods extend from a common base. Each base is provided with hooks adapted to engage with beaks of corresponding shape for mounting each device on at least one elongated section secured to the frame of the loom.
摘要:
An anchorage for elastic lingoes 11 of a loom harness comprises a plurality of rail members 12 each extending across the loom and arranged adjacent and parallel to one another in to a support so as to be separately removable and replaceable with their lingoes 11 still attached. The loom is easier to clean than conventional looms.
摘要:
A shedding device in a jacquard loom, for forming the lower shed, for instance, has a retracting spring which is rigidly anchored on one end in the loom or to the floor. To suppress the development of resonance in the spring, a core element is provided, which contacts the inside of the spring at points spaced apart from one another and forces the spring to take a course which deviates from the rectilinear. As a result, friction forces that contribute to damping the spring motion are created between the spring and the core element.
摘要:
A shed-forming apparatus for a weaving machine includes warp thread guiding healds reciprocated vertically between an upper shed position and a lower shed position; a lowering frame; and return springs attached to each heald and to the lowering frame to reset the healds into the lower shed position. The lowering frame supports a channel through which an air stream is forced. The return springs are coupled to the channel for exposing the return springs to a pressure of an air flow to prevent dust deposition and lint formation on the return springs.
摘要:
The shedding device for weaving machines whose warp threads guided in heddles between an upper shed position and a lower shed position are moved back and forth, whereby tension springs that move axially in a surrounding casing grip each heddle to return them to the lower shed position, and the tension springs are attached to a downward-pulling base or rod of a downward-pulling frame. The shedding device is characterized in that a device to prevent dust and fluff from collecting an the return spring is an the face of the sleeve that moves axially relative to the affected heddles.
摘要:
This relates to a device for exerting a back-pull on the heddles of Jacquard looms. In such looms the upper end of each heddle is connected to a patterning machine and it is necessary that the lower end of the heddle be connected to a pulling device which applies the necessary pull in the opposite direction to return the displaced heddle. Each heddle has permanently connected thereto a piston which is positioned within a cylinder guide with one end of the cylinder guide being open into a chamber wherein a pressure other than atmospheric pressure is maintained and the opposite end of the cylinder guide is open to the atmosphere in a manner wherein each piston and its associated heddle is displaced away from the patterning machine. The pull-back pressure may be varied by varying the pressure within the chamber.