Abstract: A wire stripping apparatus with a mechanism which cuts lead wire to a specified length, and peels off the covering of both ends of the wire before wiring it; through the attachment of a supply finger which conveys the wire to a predetermined position on the printed circuit board or similar for fixing, and positions it there, the device can supply the wire thus obtained to the next process. An automatic wiring device which can automatically perform wire coiling and soldering in a process continuous with the construction of said wiring by combining the work of this wire stripper with an automatic coiling and soldering device.

Abstract: An automatic soldering device is characterized in that the end portion (solder nozzle) 30 of a feeding tube 10 for guiding thread solder 22 is supported near and directed toward an iron tip by means of a holder 23, the base of which is fixed by means of a spring 25 to a base plates 24 and 54 that are freely adjustable positionwise relative to the iron tip 9, and that the angle of the base plates 24 and 54 relative to the iron tip can be adjusted in all directions by adjusting the protrusion of plural screws provided on the base plates 24 and 54 so that thread solder 22 can be supplied to the iron tip 9 in a suitable manner irrespective of the wear thereof.

Abstract: Apparatus mounted on a self-propelled truck, and provided with mechanisms for effectively, smoothly, and safely performing various timbering work in drift and tunnel walls and roofs. The mechanism includes a working platform which is rotatable and kept horizontal for easy conveyance of timbering materials even in a narrow drift and for steady performance of timbering by workers on the platform. Planting of props is readily performed by a device provided to the platform, which grasps a prop, shifts it and erects the prop over a selected pit, and bridging of top beams over capitals of planted props is accurately made by lifting means provided on the working platform.