262results about "Dobbies" patented technology

The invention discloses a rotary type multi-arm shedding mechanism, belonging to the technical field of textile machinery. The rotary type multi-arm-shedding mechanism comprises a main shaft, swing arms, eccentric discs, a spline disc, clutch claws arranged on the eccentric discs, a first signal swing arm, a second swing arm and an iron-absorbing swing arm, wherein one end of the first signal swing arm is composed of a first swing arm meshing face, and the other end of the first signal swing arm is composed of a first iron-absorbing swing arm contact pin; one end of the second signal swing arm is composed of a second swing arm meshing face, and the other end of the second signal swing arm is composed of a second iron-absorbing contact pin; and the iron-absorbing swing arm is arranged on an iron-absorbing swing arm shaft. The rotary type multi-arm-shedding mechanism is characterized in that the meshing face of the firs eccentric disc and the second eccentric disc are of the shape of a semi-circular-arc concave face, the meshing face of the first swing arm and the meshing face of the second swing arm are of the shape of a semi-circular-arc concave face, the radius of the semi-circular-arc concave face is identical to that of the semi-circular-arc concave face, in addition, a first distance from the meshing face of the first eccentric disc to the rotation axis of a main shaft is identical to a second distance from the meshing face of the second eccentric disc to the rotation axis of the main shaft. The rotary type multi-arm-shedding mechanism has the advantages of contributing to guaranteeing a shedding action effect and saving energy and ensuring the quality of textiles.

A variety of embodiments are disclosed, in both apparatus and method form, that relate to the use of fabric material in the manufacture of an air bag deployment system. In addition, fabric weakening is disclosed according to a technique that does not result in physical alteration of the fabric. This invention therefore includes an air bag cover for an air bag safety system for a vehicle comprising a fabric outer layer having a frontside and a backside and a substrate containing an opening wherein the opening has a periphery. The substrate is preferably formed by low pressure molding, wherein the fabric outer layer overlies the opening in the substrate, and wherein the fabric outer layer is weakened at a location that is adjacent or overlies the substrate opening periphery.

A novel rod linkage for driving a heddle shaft includes at least one strap (16), which for damping oscillation has a sandwich structure (37) oriented in the longitudinal direction (L) of the strap assembly (16). The sandwich structure includes at least one rigid element (27), extending in the longitudinal direction, which is joined to one end (17) of the strap assembly (16); a second rigid element (31), likewise extending essentially in the longitudinal direction, which is joined to the other end (19); and a two-dimensional damping element (34), again extending in the longitudinal direction, disposed between the first two. The element (34) exclusively effects the mechanical connection of the two parts (16a, 16b) of the strap assembly (16). Preferably, no additional connecting elements, such as rivets, screws, or other rigid connections, between the rigid elements (27, 31) are provided. Preferably, the rigid elements (27, 31) are embodied as wedges pointing in opposite directions, which thus define a wave resistance that varies in opposite directions in the longitudinal direction. This wave resistance brings about an intentional coupling misadaptation with respect to the oscillation transmission. The element (34) disposed between them damps the oscillations additionally, so that the strap assembly (16) transmits driving motions like a filter and destroys or absorbs interfering oscillations.

The invention provides a three-shed device of a rotary electronic dobby and belongs to the technical field of textile machinery. The rotary electronic dobby comprises a tank body, a heald lifting arm driving mechanism and a heald lifting arm mechanism, wherein the heald lifting arm driving mechanism is arranged in a tank body cavity of the tank body through a spindle; the heald lifting arm mechanism is arranged in the position, corresponding to the left side of the heald lifting arm driving mechanism, in the tank body cavity of the tank body through a heald lifting arm shaft and is connected with the heald lifting arm driving mechanism. The three-shed device comprises a pair of supporting seats, a swing arm mechanism and a heald frame three-shed heald lifting blade mechanism, wherein the supporting seats correspond to each other and are fixed with one side, opposite to the tank body cavity of the tank body, of the left tank wall when in a state perpendicular to the left tank wall of the tank body; the swing arm mechanism is supported between the pair of supporting seats and is connected with the heald lifting arm mechanism; the heald frame three-shed heald lifting blade mechanism is connected with the swing arm mechanism. The three-shed device of the rotary electronic dobby has the following advantages: resources are saved, and the requirement for three sheds of a loom for weaving pile warp fabric is met; the integral structure is concise, and the rotary electronic dobby in the prior art can be subjected to addition improvement, so that economic cheapness can be reflected.

The heald shafts of a power loom are driven by electric D.C. or A.C. motors which have an external rotor or an armature connected to the respective heald shaft through two articulated couplings, for example snap locks, and a push-pull rod. The motors receive control signals from a computerized controller for reversing the motion direction of the external rotor or armature. The stators of the motors are rigidly mounted on a fixed axis secured to the loom frame.

The present invention provides a heald-frame height adjusting apparatus to make it possible to overcome the problems by providing a heald-frame height adjusting apparatus that easily adjusts the height of a heald frame and that reduces manufacturing costs of a shedding device, and that does not allow the shedding device to easily malfunction and that is suitable for high-speed vertical movement of the heald frame. A heald-frame height adjusting apparatus used in a shedding device including a drive transmission mechanism which is provided in accordance with each heald frame, which connects a reciprocating driving device and a heald frame with each other, and which is capable of changing a supporting height of the corresponding heald frame. The heald-frame height adjusting apparatus includes engaging means and raising-lowering means, the engaging means being engageable with and disengageable from the heald frame and being engaged with the heald frame when the height of the heald frame is adjusted before starting an operation of a loom, the raising-lowering means being placed at a securing portion of the loom and moving the engaging means vertically with respect to the securing portion.

The invention discloses an electronic multi-arm machine having an active lubrication function. The electronic multi-arm machine comprises a box body, a power input shaft, a spline shaft and a cam driving mechanism. The axial center of the spline shaft is provided with a spline shaft oil-guide channel along a direction parallel to a length direction of the spline shaft. The front end of the spline shaft is provided with an oil inlet seal bearing installation hole. An oil seal bearing is arranged in the oil inlet seal bearing installation hole. The spline shaft oil-guide channel is communicated with an oil inlet seal bearing inner ring hole of the oil inlet seal bearing. The middle of the spline shaft is provided with a spline shaft oil outlet channel. The spline shaft oil outlet channel and the spline shaft oil-guide channel form a cross-staggered relationship and the spline shaft oil outlet channel is communicated with the spline shaft oil-guide channel. An active lubricating oil supplying mechanism is arranged in the position corresponding to the front side of the oil inlet seal bearing inner ring hole in the box body cavity. The active lubricating oil supplying mechanism is connected to an oil path of the oil inlet seal bearing inner ring hole and is transmission-connected to the power input shaft. The electronic multi-arm machine has good whole lubricating effects and helps to prolong service lives of the eccentric plate, eccentric disc bearing and swing arm.

Various embodiments are described relating to method of producing a synthetic field surface. In one embodiment, the method includes providing a plurality of warp yarns; providing a plurality of fill yarns; providing a plurality of pile yarns of a first type; providing a plurality of pile yarns of a second type; providing a plurality of dummy yards; weaving the plurality of pile yarns of the first type with the plurality warp yarns and the plurality of fill yarns for a first predetermined distance to form a backing; weaving the plurality of pile yarns of the first type with the plurality of dummy yarns to form a plurality of short hoops for a second predetermined distance; cutting the plurality of pile yarns of the first type to form a first plurality of upstanding ribbons representing grass to produce a synthetic field surface.

The dobby has, at each blade level thereof, a vibration element associated with an operation element, at least one movable connecting element supported by the operation element and two swing levers receiving, at one side, action of a reader and, at the other side, action of a elastic device. The elastic device connects a catch of the swing lever with a jamming face, set at the operation element, or the connecting element and the lever connected with the jamming face is out of a selector of the reader. And a mechanical element independent from the reader moves, resisting to the action of the elastic device, the lever having the catch unconnected with the jamming face. Thereby, the lever does not interact with angular motion of the selector.