Abstract: The present invention relates generally to a method and a device for building in the ground vertical-walled tunnels or the like starting from a subterranean conduit, and also to the underground structures, such as tunnels or the like, obtained by the said method.Already known in the art is the making of underground vertical walls by first providing trenches lined with sheet metal and then filling the same with concrete or with stonework or brickwork. Such trenches are usually excavated by the open-cut method, starting from the surface of the ground or from an open excavation.Where such walls must be constructed on a surface-built urban site or at a location where communication facilities such as streets, roads, railway tracks, airport runways, etc., are established and the activities taking place at the surface must not be interfered with, the trenches may be started from underground horizontal propped galleries made by known conventional means.

Abstract: The device is constituted by a seal-bearing ring 21 disposed about the flange 2 of the component 5 and resting on the plate 1 of the reactor, having a first set of annular seals 26,27 ensuring sealing between the inner side surface of the seal-bearing ring 21 and the outer side surface of the flange 2 of the component 5 and a second set of annular seals 23,24 ensuring sealing between the base surface of the seal-bearing ring 21 and the plate 1 of the primary vessel. The device also includes a means 32-34 for applying a vertical force downwards on the seal bearing ring 21 and a means 16,18 of injecting an isolating gas between the flange 2 of the component 5 and the plate 1 of the primary vessel on which the component 5 rests. The device is especially useful for sealed mounting of components within vessels of fast neutron nuclear reactors.

Abstract: A cassette type tape recorder comprises a head base movably supported on a cassette type tape recorder structure and having magnetic heads and a pinch roller provided thereon. The head base is caused to move to a position apart from the position at which a tape cassette is to be loaded by the cassette eject operation, means responsive to loading of the cassette for moving the head base toward the cassette after it has been loaded to cause the magnetic heads to make contact with a magnetic tape within the cassette, and a mechanism for holding a pinch roller and a drive roller at positions apart from a capstan and a take-up reel disc respectively, even when the head base is moved. The manual operation of switching the tape recorder to the record or play mode after the cassette has been loaded causes only the holding mechanism to move, thus pressing the pinch roller and the drive roller against the capstan and the take-up reel disc respectively.

Abstract: A loquat-leaf moxibustion therapy in which a green leaf of loquat and thereupon mattings of vegetable fibers such as for example the combination of a mat of cotton fabric and a mat of paper are placed preferably in this sequence on the surface of the body skin of a subject in the region of a desired "remedial spot" of the subject and thereafter a moxa stick kindled at one axial end thereof and pointed to the remedial spot across the layers of the mattings and the leaf is pressed at the fiery end of the stick onto the mattings so that the loquat leaf is locally fumigated by the smoke from the moxa stick for producing the combined medicinal effects of the moxa and the loquat leaf and, at the same time, the subject's body skin is pressed upon at the remedial spot and enjoys the remedial efficacy obtainable by the finger-pressure therapy known in the art of oriental medicine.

Abstract: A detachable and leaktight device for closing an orifice of a nuclear reactor vessel during hydraulic pressure testing comprises a body which bears, inside the vessel, on an internal part of the vessel which is resistant to the thrust stresses during the application of pressure, sealing means for producing a seal between the interior and the exterior of the vessel and being mounted on the body, and operating means for fixing and/or demounting the device, the operating means being accessible and operable from outside the vessel.

Abstract: The recording device has a heating unit operated and controlled to a predetermined operating temperature, the start of the recording device is governed so as not to operate the heating unit before its temperature reaches a predetermined operating value, the starting of the recording device is permitted prior to a certain time before the temperature of the heating unit reaches the predetermined operating value after the power supply is energized source for the recording device.

Abstract: An electrolyser consisting of a stack of elemental cells, the said stack being located in a horizontal tubular enclosure.The enclosure consists of a fixed vertical baseplate (2) and of a tubular envelope (1) mounted upon the horizontal bed (8) of the apparatus by way of supporting rollers (7). The body of the stack (4) is supported during the opening operation by chocks (12) and by supporting rollers.The invention is made use of for the production of hydrogen and oxygen by means of industrial electrolyzers.

Abstract: A method and apparatus for winding an elongate member, such as a strip or wire, under tension around a body comprising a frame maintained at a preset distance from the body and movable around the body by means including a belt held against rotation relative to the body and two belt engaging members each selectively adapted to be clamped against and released from the belt. One of the belt engaging members is fixed relative to the frame and the other of the members is movable relative to the frame in a first direction when the one member is engaged with the belt and in the opposite direction when the other member is engaged with the belt to move the frame relative to the body. The frame carries a guide for guiding the elongate member onto the body and a mechanism for tensioning the strip as it is wound on the body.

Abstract: A method of making elements with profiled cross-section from sheet metal for use in a driving belt by a rolling process, for providing a strip with a middle groove in longitudinal direction and by rolling the material continuously symmetrically with respect to that groove to two profiles punching out the elements on both sides of the middle groove, with their longitudinal direction in the direction of movement of the strip, according to lines which are located at accurately predetermined distances on both sides of the groove.

Abstract: Apparatus for increasing the flow speed of a medium such as air and for recovering its kinetic energy, comprising a series of concentrical, substantially symmetrically arranged annular members separated by annular slots, said members in the direction towards length axis of the apparatus, which coincides with the flow direction of the medium, having successively and substantially symmetrically decreasing dimensions in the direction of said length axis to the formation of an inlet opening wherein said annular members have curved leading edges with intermediary annular slots for removal of turbulent medium, and to the formation of an outlet opening acting as a diffuser for the medium, wherein said annular members are successively thinner to the formation of sharp edges directed outwards from the length axis of the apparatus; the kinetic energy of the medium being recovered by conventional means. Separate accelerator means are also provided.

Abstract: A steel blank is placed in intimate contact along a joint interface with a blank of another metal, and the two blanks are welded along and throughout the interface by a superhigh-output electron beam thereby to obtain a metallurgical welded joint and to form an integral blank which is rolled or otherwise formed into a clad steel article.

Abstract: There is provided a cable tension regulator having a pivotable hub which is rigid with an operating lever. Two quadrants are pivotably mounted on the hub and have fixed on their peripheries respective cables for connection to a control or controlled element. Resilient means urge the quadrants to pivot in the direction corresponding to tensioning of the cables. Means are provided for locking the quadrants on the hub when an additional traction is exerted on one of the cables by the control element and for releasing the quadrants when the tensions of the two cables change simultaneously. Each quadrant is pivotably mounted on the hub by means of a disengageable one-way coupling which prevents, when in operation, the quadrant from pivoting under the effect of the resilient means. There is provided means for disengaging the one-way coupling when the respective cable is taut.

Abstract: A method for preparing sterically hindered bis- or polyphenols of the formula: ##STR1## wherein R' is hydrogen, a C.sub.1 -C.sub.4 alkyl; R" and R"' the same or different and are each: ##STR2## wherein R is a tertiary C.sub.4 -C.sub.8 alkyl, R.sub.1 and R.sub.2 are the same or different and represent a C.sub.1 -C.sub.8 alkyl or a C.sub.6 -C.sub.8 cycloalkyl, or a C.sub.7 -C.sub.9 aralkyl, which comprises reacting the starting sterically hindered 2,4,6-trialkylphenols of the formula: ##STR3## wherein A is a C.sub.1 -C.sub.8 alkyl or a C.sub.6 -C.sub.8 cycloalkyl or a C.sub.7 -C.sub.9 aralkyl or a 3,5-dialkyl-2-hydroxybenzyl of the formula: ##STR4## B is a C.sub.1 -C.sub.8 alkyl, or a C.sub.6 -C.sub.8 cycloalkyl, or a C.sub.7 -C.sub.9 aralkyl, or a 3,5-dialkyl-4-hydroxybenzyl of the formula: ##STR5## wherein R.sub.1 and R are as identified above, with acetals, aldehydes or donors of C.sub.1 -C.sub.5 aldehydes in an acidic medium at a temperature within the range of from 60.degree. to 200.degree. C.

Abstract: Artificial kidney apparatus comprising a blood circulation system including a dialyzer and a blood pump interposed in a blood circuit connectable with blood vessels of a patient, the blood circulation section being contained together with a drive motor for the blood pump and an electrical supply source thereof in a single casing to form a portable unit. The unit has connection openings for detachable connection with corresponding connection openings of a dialyzing liquid circuit of a dialyzing liquid circulation section. Respective valves are provided in the openings which are normally closed but which when the sections are coupled are opened to provide intercommunication. In a modification a portable container freely contains a blood circulation section and a dialyzing liquid circulation section. A dialyzing liquid supply section is contained within the portable container in the interior thereof not taken up by the blood circulation section and the dialyzing liquid circulation section.

Abstract: An electrode apparatus for cardiac pacing suitable for use in an emergency in which there is provided a needle, a sheath and an electrode needle wire. First, the chest wall is pierced through with the needle covered with the sheath. Thereafter, the needle is pulled out from the sheath and, in place thereof, the electrode needle wire is inserted and subsequently the heart is pierced with the electrode needle wire in preparation for the pacing operation.