In “M-K” was published, the drawings and description of electric spinning-wheel; material found a ready response among our readers. However, some believe that an electric spinning wheel to use is not everywhere and not always convenient, and therefore asked to talk about simple, non -—, “grandmother”. For Example, N. Konovalov from Transbaikalia wrote us; “In the village of Russian Samobranka a necessary thing, and the city will come in handy too. But the thing is that artists who could make this old tool with foot drive, virtually no.” We offer you to become the master, the drawings and description of a spinning wheel is given below.
Samobranka foot drive is one of the oldest robotic assistants in domestic work. Checked more than one generation of knitters, it combines the rationality, simplicity and convenience. These qualities are retained, and a modern spinning wheel, shown in the figure. The principle remains the same: the horizontal spindle is driven in rotation by a belt from the large pulley, flywheel, and the pedal connecting rod. Material for main parts of tree.
Manufacturer of spinning wheels start from the strut. This would require a beam cross-section 50X80 mm and height 750 mm, preferably straight grained and without knots, of a solid wood (oak, beech. ash, larch). If the workpiece is of such a size is not available, glue it from several smaller sections. One end will zakruglenie, then do the through hole for the axis of the pulley spindles, this is the top of the rack. First go through the base hole with a drill of small diameter: about 3 mm, then counterbore d 19 mm on both sides under the bearing seats are concentric. Then drilled a hole in the bridge to 7 mm d — for pass axis. In the same sequence are sockets for bearings of the axis of the flywheel in the middle of the rack. Their diameter is 30 mm, and the channel axis is 11 mm. In the bottom of the rack cut on both sides of the inclined (at an angle of 10°) manholes to a depth of 10 mm and width 20 mm. if the Assembly will include the base of the spinning wheels, which can be cut from boards with a thickness of 20 mm or glue two sheets of 10mm plywood.
The pedal of the wooden plate dimensions 130Х270Х X20 mm is mounted on the substrate using conventional window hinges.
Rod — a wooden block of cross-section 15X40 mm and a length of 340 mm with holes on the ends to locate the bearings. It may be metal, but then to save the style and close it with a wooden pencil case-cover. As the lower point of the connecting rod during the swing of the pedal is forced to deflect in two planes, preferably its connection with the pedal to run through a spherical bearing, or you can use the ball tip of the connecting rod from the foot of the sewing machine.