摘要:
An air spinning method and apparatus for spinning a yarn. The apparatus includes a pipe with a fiber bundle passageway, air jet nozzles for applying whirling air currents near the inlet of the pipe, and a rotating body including air discharge passages and revolving around the pipe. In the method, the fiber bundle is passed through the pipe's fiber bundle passageway. Rear ends of some fibers are separated from the fiber bundle by air currents jetted from the nozzles so as to be rotated together with air currents by the rotating body after drawn into the discharge passage. Fibers lying in the central portion of the fiber bundle, pass through the pipe's fiber bundle passageway without being influenced by the air currents jetted from the nozzles. Fibers lying on the peripheral portion of the fiber bundle, however, are subjected to such air currents so that ends of some such fibers are separated from the fiber bundle, drawn into the air discharge passageway, whirled by the rotating body, and wound around other fibers of the fiber bundle. The spun yarn thus formed includes core fibers in substantially the same form and relationship to each other as in the fiber bundle, and winding fibers spirally wound around the core fibers along the length of the core fibers. The winding fibers are of uniform frequency and angle along the length of the core fibers.
摘要:
A stereo-microscope is disclosed. It comprises a common objective lens system, a first and second imaging lens systems having optical paths parallel to that of the objective lens system producing intermediate images of an object, a first and second optical path deflecting devices arranged behind the respective imaging lens systems for deflecting the respective ejection bundle of rays outwardly relative to the optical path of the objective lens system, and a first and second ocular systems arranged behind the respective optical path deflecting devices for observing the respective intermediate images. It is characterized in that a stereo angle .omega. which is to be decided depending on the base length between the first and second imaging lens systems and an observation angle .theta. which is defined between the observation optical paths of the first and second ocular systems are arranged to be equal. Another stereo-microscope is also disclosed. It comprises an objective optical system, a first and second ocular systems, a first and second erecting optical systems and devices for varying an observation angle .theta. defined between the observation axes of the first and second ocular systems.
摘要:
A drafting device in a spinning machine including a cylindrical sliver guide and an adjusting guide for reshaping and controlling the sliver, and a traverse mechanism for an apron supported on the middle roller. The sliver guide is disposed in front of the back rollers and the adjusting guide is arranged between the back rollers and the middle rollers.
摘要:
Binocular microscope having a pair of converging optical paths, each including a magnification changing optical device which comprises two or more lens groups. The lens groups are rotatably mounted on the lens housing so that they can be alternately brought into alignment with the optical path for changing the magnification power.
摘要:
A surface hardening material being excellent in impact resistance and having abrasion resistance is provided. Provided are: a high-toughness cobalt-based alloy containing 25.0 to 40.0 mass % of Cr, 0.5 to 12.0 mass % of a sum of W and/or Mo, 0.8 to 5.5 mass % of Si, and 0.5 to 2.5 mass % of B, 8.0 mass % or less of each of Fe, Ni, Mn, and Cu, and 0.3 mass % or less of C, the sum amount of Fe, Ni, Mn, and C being 10.0 mass % or less, and the remainder comprising 48.0 to 68.0 mass % of Co and unavoidable impurities; and an engine valve coated with the same.
摘要:
A hard-facing alloy having impact resistance, wear resistance and hot corrosion resistance and containing Fe which is a bountiful resource and inexpensive is provided. Provided are: a Ni—Fe—Cr alloy containing 0 to 20.0 mass % of Mo, 8.0 to 40.0 mass % of W, 20.0 to 40.0 mass % of a total amount of Mo and W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr and 1.0 to 2.5 mass % of B, and the remainder being Ni and unavoidable impurities; and an engine valve welded with the same alloy. The above Ni—Fe—Cr alloy can further contain 15 mass % or less of a total amount of elements selected from Co, Mn, Cu, Si and C, in such cases, 15.0 mass % or less of Co, 5.0 mass % or less of each of Mn and Cu, 2.0 mass % or less of Si and 0.5 mass % or less of C are preferred.
摘要:
In the present invention, a gas flow rate adjustment apparatus that outputs a raw material gas to an ozone generation apparatus is provided. The gas flow rate adjustment apparatus includes a plurality of flow rate adjustment parts, and outputs a second mixed gas serving as the raw material gas to the ozone generation apparatus. The second mixed gas includes an oxygen gas outputted from a first oxygen flow rate adjustment part and a first mixed gas outputted from a mixed gas flow rate adjustment part. The raw material gas generated by the gas flow rate adjustment apparatus, which includes an oxygen gas and a nitrogen gas, contains the nitrogen gas added to the oxygen gas with the rate of addition being in a range of more than 0 PPM and not more than 100 PPM.
摘要:
In the present invention, particularly, means for removing moisture contained in a raw material gas is provided in a raw material gas supply part so that the amount of moisture contained in the raw material gas that is supplied to an ozone gas supply system is reduced, and additionally an ozone gas output flow rate management unit is provided that is configured to receive a plurality of ozone gas outputs from a plurality of nitrogen-free ozone generation units and capable of performing an ozone gas output flow rate control for selectively outputting one or a combination of two or more of the plurality of ozone gas outputs to any of a plurality of ozone treatment apparatuses by performing an opening/closing operation on a plurality of ozone gas control valves provided in the ozone gas output flow rate management unit.
摘要:
There is an object to provide a technique of forming a proper abrasion resistance layer by a thermal spraying and fusing of a self fluxing alloy. The object may be solved by cutting the pipe body along a curved face that is perpendicular to a plane including a central axis of the pipe body and that extends not to cross the inlet hole and the outlet hole but to include a part of the central axis. Thus the pipe body is divided into a first partitioned part having at least one of the inlet hole and the outlet hole, and a second partitioned part. An abrasion resistance layer is then formed on the inner surface of at least the outer bent portion of the pipe body by a thermal spraying and fusing of a self fluxing alloy. Thereafter, the first partitioned part is fitted into the second partitioned part for welding to obtain a bent pipe according to the present invention.
摘要:
A picture signal binarization apparatus includes two comparators for converting an analog signal into a binary signal by comparing the analog signal with two different thresholds, two counters for counting inversions of the binary signal from each comparator and supplying a count signal indicative of the number of inversions of the binary signal from each of the comparators, and a selection part for selecting a binary signal from one of the comparators in response to the count signal supplied from one of the counters so that the selected binary signal is outputted as a subsequent output binary signal, the number of inversions indicated by the count signal from the one of the counters first reaching a predetermined value.