Abstract: A catoptric optical element includes a multilayer film for improving a reflectance to a light. The multilayer film includes a first lamination structure including plural basic lamination elements, each basic lamination element having two types of materials in each layer, each of the two types of materials having a constant thickness in each basic lamination element, the first lamination structure having a constant periodic length where one periodic length is defined as a thickness of each basic lamination element, and a second lamination structure alternately layering the two types of materials, wherein each of the two types of materials has a non-constant thickness, or the second lamination structure has a non-constant periodic length.

Abstract: A multi-air-conditioner includes an exterior unit, interior units and remote-controllers. The exterior unit collects operation data of each of the interior units, determines an operation condition, and transmits the operation condition to each of the interior units. The interior units transmit the operation condition to the exterior unit, receive the operation condition from the exterior units, receive the operation setting condition from the remote-controllers, set an operation condition based on the operation setting condition which is received from the remote-controllers and the exterior unit, and transmit the operation condition to the remote-controllers. The remote-controller receives the operation condition from the interior units and transmits the operation setting condition to the interior units.

Abstract: A multineedle sewing machine is provided with a needle bar and a threading bar supported for turning about its axis and for vertical movement in parallel to the needle bar fixedly provided at its lower end with a hook holding member. A threading hook member is supported on the hook holding member so as to be movable in directions perpendicular to the axis of the threading bar in a plane. The position of the threading hook member relative to the threading bar can be changed by turning a lever. A positioning cam having a cam surface provided with positioning recesses is provided for turning on the threading bar near the upper end of the same, and a pin fixed to the threading bar is in egagement with the cam surface of the positioning cam. When the lever is turned, the positioning cam is turned to determine the vertical position of the threading bar selectively and, at the same time, a radius changing lever is turned to change the radius of turning of the threading hook member.

Abstract: A vacuum valve includes a first sealing member in contact with the space on a low pressure side of a space shut-off of the vacuum valve is composed of an inorganic material, and a second sealing member in contact with the space on the high pressure side is composed of an elastomer. The sealing state of the vacuum valve is made adjustable in two steps such that the first sealing member and the second sealing member are closed in the first sealing step and in the second sealing step the first sealing member is closed and the second sealing member is open.

Abstract: In threading an eyelet of a looper of a sewing machine, a slide member is displaced until a positioning portion of the slide member comes into contact with the looper. In this contact condition, a thread pushing projection for pushing a looper thread is displaced to penetrate into the eyelet of the looper so that the looper thread pushed by the thread pushing projection passes through the eyelet of the looper. The looper thread having passed through the eyelet is grasped by a grasping portion of the slide member. Thereafter, the thread pushing projection is retracted from the eyelet of the looper, and the slide member is returned to an original position, thus completing the threading operation.

Abstract: An automatic bobbin thread guiding apparatus in combination with a sewing machine has a work supporting bed, a throat plate, a shuttle race slide and a horizontally rotating shuttle. A bobbin thread holding assembly is provided between the shuttle race slide and the rotating shuttle, for clamping and carrying the bobbin thread end, and is operatively connected with the slide. A bobbin thread engagement guiding mechanism is provided for guiding the bobbin thread catching portion of the assembly so as to make the bobbin thread engage automatically with the bobbin thread tension adjusting mechanism in the rotating shuttle when the assembly is driven backward, and then to hold the catching portion at a given position for making the bobbin thread intersect with the needle thread loop when the assembly reached its rear end position.

Abstract: A device for treating fine particles is provided which comprises a plural number of reaction chambers for providing reaction fields different from each other provided along the flow pathway on the downstream side of a nozzle which jets out fine particles in a beam. The device may be provided with a chamber for a starting material for forming fine particles. The nozzle may be a convergent-divergent nozzle.

Abstract: A device for blowing fine particles is provided which comprises a plural number of upstream chambers for jetting out fine particles provided against a movable substrate. Each of the upstream chambers may be provided with a gas exciter, and also may be provided with an energy imparter for imparting energy to the substrate.

Abstract: In a photographing apparatus such as a single lens reflex camera, metering photoelectric conversion elements are provided in the optical path of an imaging optical system or a finder optical system and the line width of the pattern forming the elements is set to a width undiscernable by the human eye. Thus, with such metering photoelectric conversion elements, no irregularity of the quantity of amount is caused in the image observed through the finder or the image photographed.

Abstract: An apparatus for controlling a flow of fine particles is provided which comprises a convergent-divergent nozzle in a flow path of the fine particles. The nozzle may be operated under an optimum expansion condition, and the differential coefficient of the streamline at the channel inside the nozzle varies continuously and is equal to zero at a throat portion of the nozzle.

Abstract: A reaction apparatus is provided which comprises a flow control system provided with a convergent-divergent nozzle. This nozzle is operated under the optimum expansion condition, and the differential coefficient of the streamline of the channel inside the nozzle varies continuously and reaches zero at a throat of the nozzle.

Abstract: An apparatus for Plasma CVD process comprises a vacuum chamber in which a plural number of substrates being placed along a circle and separately from each other, and means for passing a starting gas or an evacuating gas through gaps between the adjacent substrates.

Abstract: A sewing machine has a retractable handwheel which is always biased toward the outside of the frame by a resilient member. When pushed into the frame against the biasing action of the resilient member, the handwheel is locked in a retracted position in the frame by an actuating member. The handwheel is released in conjunction with operation for opening a cover covering the spool chamber of the sewing machine to allow the handwheel to be projected outwardly of the frame, so that the manual rotation of the handwheel may be effected.

Abstract: An apparatus and a process for mass production of films by vacuum deposition comprise a substrate charging stage which is evacuated, an interconnecting stage which is positioned adjacent to said substrate charging stage and is evacuated, and a film forming stage which is removably attached to the interconnecting stage and is evacuated independently of the interconnecting stage.

Abstract: A vacuum processing apparatus for applying a vacuum working process to a substrate to be processed by a plurality of processing steps comprises vacuum containers exclusively for use for processing disposed in place for each of the processing steps, and a vacuum container exclusively for use for conveyance movable between the vacuum containers exclusively for use for processing. The vacuum containers are provided with opening-closing gates which can be connected to each other. The substrate to be processed is transferably movable between the vacuum containers exclusively for use for processing and the vacuum container exclusively for use for conveyance.

Abstract: A photochemical vapor deposition apparatus which includes a reaction chamber, a means for introducing a starting gas for film formation into the reaction chamber and a means for irradiating the starting gas with a light of high energy and deposites a thin film on a substrate placed in the reaction chamber by utilizing the photochemical reaction, characterized in that the apparatus includes a means for heating in advance to high temperature the starting gas to be introduced into the reaction chamber.

Abstract: A photochemical vapor deposition method comprises introducing a starting gas into a reaction chamber, irradiating the starting gas with a light energy, and forming a deposition film on a substrate by utilizing a photochemical reaction, characterized in that the plural starting gases are introduced into the reaction chamber and the film is formed on said substrate by causing chemical reactions by irradiating molecules of these starting gases with individual light energy having a wavelength region corresponding to an absorption spectrum of each of said starting gas.

Abstract: A method of cleaning an apparatus for forming deposited film on a substrate to remove the substances attached to the inside walls of a reaction chamber in the course of the formation of deposited film on the substrate by etching with plasma reaction comprises using a gas mixture of carbon tetrafluoride and oxygen as etchant.

Abstract: A treatment device utilizing plasma performs treatment by exposing a material to be treated to a plasma atmosphere formed by converting at least either one of fluorine and a fluorine compound into gas plasma, and said device comprises a structural member for forming the space for maintaining said plasma atmosphere, which is constituted of a stainless steel structure member coated on its surface exposed to said plasma atmosphere with a metal film which can difficultly form a fluoride.

Abstract: A copying machine has at least one metal surface of high reflectance provided with a dielectric multilayer film vapor deposited thereon. The dielectric film has a wavelength selectivity and serves to match the wavelength characteristics of the light source used in the copying machine to the sensitivity characteristics of the photosensitive medium used in the same copying machine. Thus, in the copying machine, the spectral sensitivity characteristics get adjusted to the optimum by the particular effect of the metal reflective surface or by a synergistic effect of two or more such reflective metal surface.