Abstract: A yarn feeding device including a preheater 23 for preheating a yarn bar Y, a first feed roller 27 for drawing the yarn bar Y from an original yarn package 11 is provided opposite to a temporary twisting and relaxation heat treating device including a second feed roller having a higher circumferential speed than that of the first feed roller 27, a temporary twisting tool 31 for twisting the yarn bar Y and a second heater 35 for carrying out a relaxation heat treatment on the temporary twisted yarn bar Y with a worker passage A interposed therebetween, a first heater 41 and a cooling plate which thermally fix a twist retroacting along the yarn bar Y are provided in portions positioned above from the yarn feeding device to the temporary twisting and relaxation heat treating device, and a winding device 51 including an automatic switching device is provided on an opposite worker passage A side of the temporary twisting and relaxation heat treating device.

Abstract: A yarn package forming machine for winding a yarn on a bobbin to form a yarn package on the bobbin, comprising: a stationary frame structure; a pair of supporting arms, rocking means, a pair of bobbin holders, a friction roller, yarn traversing means, yarn releasing means, and yarn end forming means. The yarn end forming means comprises a yarn transferring member, a yarn retaining unit and a yarn cutting unit to form a yarn end portion including a first trailing yarn end portion trailing to a bunch winding portion formed by the yarn releasing means to be wound on the full yarn package at a predetermined angle with respect to the axis of the bobbin, and a second trailing yarn end portion to be wound axially outwardly of the full yarn package on the bobbin.

Abstract: Herein disclosed is a variable porcelain condenser structure in which a rotor electrode and a stator electrode are arranged through a ceramic dielectric member. A stator is made of a ceramic dielectric member and formed with the stator electrode on its one side. A rotor is made of a metallic material and formed with the rotor electrode of generally semicircular shape on its one side. Both the stator and the rotor are mounted on the cylindrical bottom of an insulating frame. The aforementioned rotor, stator and insulating frame are held altogether in elastic contact with one another by means of a metal case having several elastic tongues.