Abstract:
A method of balancing the dynamic effects of a material body to be balanced and carrying out a periodic reversing motion, for instance of the batten (1) of a weaving machine, by means of a balancing material body (6) in which, under the action of both the periodic reversing motion of the material body to be balanced and of the elastic coupling between the material body to be balanced and the balancing material body (6), a periodic reversing motion of the balancing material body (6) of equal frequency, lower amplitude, and with a phase shift (π) is produced. Thus is achieved the reduction of both the dynamic effects of the material body to be balanced and of the required drive effects. The invention also proposes a device for carrying out the method.
Abstract:
A method of insertion of the weft thread into the shed of an air-operated jet loom in which to the main stream of air supplied to the beginning of the direct pick channel (10) of the swinging loom reed (1) are added at regular length intervals of the direct pick channel (10) ancillary air streams (22) oriented obliquely in the direction of the weft thread insertion into the open side (11) of the direct pick channel (10) through which they carry the weft thread. The ancillary air streams (22) are oriented toward the axis (4) of swinging of the loom reed (1) and comprise a vertical component (23) of force acting on the weft thread in the direction of the force of gravity, thus stabilising the affect ot the air stream on the weft thread due to the fact that the weft thread is fed exclusively (all way through) near the bottom of the direct pick channel (10). The device for carrying out the method comprises ancillary jets (14) and is so arranged that the plane ((tau)) passing through any of the outlet apertures (15, 151, 152, 152A, 152B) and the axis (4) of swinging of the loom reed (1) passes during the weft thread pick also through the open side (11) of the direct pick channel (10) of the loom reed (1).
Abstract:
A method of balancing the dynamic effects of a material body to be balanced and carrying out a periodic reversing motion, for instance of the batten (1) of a weaving machine, by means of a balancing material body (6) in which, under the action of both the periodic reversing motion of the material body to be balanced and of the elastic coupling between the material body to be balanced and the balancing material body (6), a periodic reversing motion of the balancing material body (6) of equal frequency, lower amplitude, and with a phase shift ( pi ) is produced. Thus is achieved the reduction of both the dynamic effects of the material body to be balanced and of the required drive effects. The invention also proposes a device for carrying out the method.