One operator may service 2-3 lots of equipment. The output of the experimental equipment is 400-450 g of From the superfine fiber, "felt "is generally prepared-a soft material with up to 10 o additions of water glass or other bonding agent. Articles made from superfine fiber may be used as filters for radioactive aerosols and also as air and chemical filters Experimental equipment for treating staple fiber by drawing it in a current of steam. The equipment for pro- cessing heat-insulating fiber consists of a glass furnace with a feeder in which is installed a platinum-rhodium die feeder in the form of a boat, blowing equipment, a fiber-forming chamber and a conveyer. The furnace area is 1.26 m2, the feeder area 0. 24 m2 In front of the equipment, the die vessel(boat)is fixed to the feeder in a metallic holder and this is faced with kaolin tiles and insulating lightweight refractories. Under the die feeder at a distance of 30 mm from the die is placed the blowing head, the design of which is identical to those used in Czechoslovakia. he die vessel has 42 cylindrical stamped dies placed in a single row. Their diameter is 1. 4 mm, height 2 mm. The weight of the vessel is 1.7 kg. In addition, a double-course die container with 56 dies, 2. 7 mm in diameter, 5 mm high with a spacial distance of 6 mm in stages of 6 mm is being tested. The container has a height of 60 mm and external dimensions of 250 x 300 mm. In the upper part is fixed the filtering frame with 702 1.4 mm mache beside heat-insulating fiber, diameter 14-15, it is proposed to work fiber with a diameter of 10 on this hery for making heat-and sound-insulating material for aircraft. The approximate output of fiber from a 42-die container is 5 kg/hour and from a 56-die container-24 kg/ho The plan of the equipment for processing textile fiber is shown in Fig. 5. The equipment consists of an electric furnace with a platinum-rhodium glass-melting container, blowing equipment, a fiber-forming chamber, a pumping chamber Pregraded and precalibrated moldings are automati cally loaded at the top into the glass-melting container The blowing head is placed 20 mm from the die plate. Under the fiber-forming chamber(height 1.4 m)are placed 6 valves with which it is proposed to regulate the distri bution of fiber over the width of the conveyer belt. processing of textile fiber, it is intended test a double-course glass-melting vessel with 80 dies. The die diameter is 1.7 mm, staged at 5 mm; the distance be- tween the courses is 5 mm. with such dies it is possible to obtain a fiber with a diameter of 5-7 u which will be pro- cessed into staple thread with the aid of a centrifuge with Fig. 5. 1)Charging the mold 6000-8000rpm, ings, 2) platinum-rhodium blow chamber, 6)pumping chamber, 7) conveyer.One operator may service 2-3 lots of equipment. The output of the experimental equipment is 400-450 g of superfine fiber with a diameter of 3p per hour. From the superfine fiber, "felt" is generally prepared--a soft material with up to 10% additions of water glass or other bonding agent. Articles made from superfine fiber may be used as filters for radioactive aerosols and also as air and chemical filters. Experimental equipment for treating staple fiber by drawing it in a current of steam. The equipment for pro￾cessing heat-insulating fiber consists of a glass furnace with a feeder in which is installed a platinum-thodinm die feeder in the form of a boat, blowing equipment, a fiber-forming chamber and a conveyer. The furnace area is 1.26 m 2, the feeder area 0.24 m 2. In front of the equipment, the die vessel (boat) is fixed to the feeder in a metallic holder and this is faced with kaolin tiles and insulating lightweight refractories. Under the die feeder at a distance of 30 mm from the die is placed the blowing head, the design of which is identical to those used in Czechoslovakia. The die vessel has 42 cylindrical stamped dies placed in a single row. Their diameter is 1.4 mm, height 2 mm. The weight of the vessel is 1.7 kg. In addition, a double-course die container with 56 dies, 2.7 mm in diameter, 5 mm high with a spacial distance of 6 mm in stages of 6 mm is being tested. The container has aheight of 60 mm and external dimensions of 250 x 300 mm. In the upper part is fixed the filtering frame with 702 1.4 mm apertures. Beside heat-insulating fiber, diameter 14-15p, it is proposed to work fiber with a diameter of 10p on this machinery for making heat-and sound-insulating material for aircraft. The approximate output of fiber from a 42-die container is 5 kg/hour and from a 56-die container--24 kg/hour. The plan of the equipment for processing textile fiber is shown in Fig. 5. I 2 3 4 5 -./. Fig. 5. 1) Charging the mold￾ings, 2) platinum-rhodium vessel, 3) steam pipe, 4) blow￾ing head, 5) fiber-forming chamber, 6) pumping chamber, 7) conveyer. The equipment consists of an electric furnace with a platinum-rhodium glass-melting container, blowing equipment, a fiber-forming chamber, a pumping chamber and a conveyer. Pregraded and precalibrated moldings are automati￾eally loaded at the top into the glass-melting container. The blowing head is placed 20 mm from the die plate. Under the fiber-forming chamber (height 1.4 m) are placed 6 valves with which it is proposed to regulate the distri￾bution of fiber over the width of the conveyer belt. For the processing of textile fiber, it is intended to test a double-course glass-melting vessel with 80 dies. The die diameter is 1.7 ram, staged at 5 ram; the distance be￾tween the courses is 5 mm. With such dies it is possible to obtain a fiber with a diameter of 5-7 g which will be pro￾cessed into staple thread with the aid of a centrifuge with 6000-8000 rpm. 439