Abstract: A control arrangement for a belt printer having characters arranged in successive series on an endless belt and passed continuously in front of a print support and hammers adapted to be actuated by a control device. A recording store is connected to a calculating unit and records information relating to each character to be printed along a line on the print support. A scan register contains information relating to the coincidences between the characters and the striking members at any given time. Information corresponding to the condition when a predetermined character is to be struck by a given hammer in the course of a given scan, is stored in a storage member along with information indicative of whether or not the predetermined character is repeated in the series of characters.

Abstract: A process and apparatus for developing photographs is provided wherein photographic sensitive material is held in a holding frame. The sensitive material is soaked in a developing solution by positioning the holding frame in a development tank with its upper and lower end faces spaced with predetermined distances, preferably more than 10 millimeters, apart respectively from the upper and bottom surfaces of the development tank. Thereafter the position of the development tank is reversed up and down at predetermined times while the developing-out of the sensitive material is carried out.

Abstract: A supercritical wing section having a large average leading edge radius of curvature, followed on the upper surface by a reduction in curvature and then a knee, or region of positively increased curvature, at between 3% and 13%, preferably 5% to 10%, chord the region of increased curvature being followed by a region of low curvature extending for 30% to 90% of the chord, whereby in use of the wing at low speeds the peak velocity and peak suction are contained, in use thereof at intermediate speeds local supersonic expansion is minimized, and in use thereof in supercritical conditions a region of high expansion, stabilized over the region of increased curvature, is created.

Abstract: For use with apparatus for transferring a load between two stations movable relative to each other in a vertical plane by means of a crane carried by one of the two stations having a hook assembly for attachment to the load on the other station for lifting the load, a lift-off indicator measures either the relative velocity or relative vertical accelerations of the two stations and from signals representing relative velocity of approach showing values between a maximum positive and a negative, and relative acceleration acting away from the direction of approach indicates conditions suitable for initiating lifting.

Abstract: A process for attaching one or more layers of materials to a base or backing having an anvil in its composition. A backing has incorporated therein an anvil strip of high impact material with formed depressions for clenching staples driven through the layer or layers to be attached. The anvil strip may be a metal strip embedded in the spine of a binder or may be formed by the boundary line of a relatively hard material and a relatively soft material through which a staple or tack may pass and the layers may be a stack of paper or signature sheets.

Abstract: A toe guard is provided for a pivotable dock board in which the toe guard includes two relatively telescopically mounted plates for increasing the vertical height of protection at each side of the dock board. A dock board to which the present invention is applicable includes a ramp that is designed for pivoted mounting in a pit formed in a loading dock. This ramp includes an upper transport plate which alternatively forms a contiguous surface portion of the dock or may be pivoted to a relatively depressed or relatively elevated position with respect to the dock to permit transfer and transport of persons and equipment between the dock and an adjacently positioned vehicle. The sides of the ramp form an exposed area when the ramp is elevated with respect to the dock and toe guards are provided to prevent injury to personnel who may be standing closely adjacent to the dock and may inadvertently place their feet into the operating space of the ramp and possibly result in personal injury.

Abstract: An optical seismograph which functions to measure the relative movement of a beam of electromagnetic waves connected to the extremities of a plurality of pendulums and includes a collimated source which delivers a parallel beam of electromagnetic waves and a plurality of pendulums whose oscillation paths are perpendicular to one another, means fixed in relation to the electromagnetic wave beam direct the luminous beam on the heavy extremities of the various pendulums; and photoelectric means to measure the position variations of the extremities of the pendulums in relation to the electromagnetic wave beam. The seismograph is suitable for the detection of earthquakes.

Abstract: Control of vertical motion of a suspended crane hook assembly to accommodate vertical motion between a station carrying the crane and a station carrying a load is achieved by a transducer on the hook assembly and a control cord depending onto the load station. Tension above a set value in the cord produced by a crew member on the station causes the hook assembly to descend and below the set value causes it to rise. Movement of the stations causes a continuous adjustment of tension and the hook assembly follows the motion, extra tension being applied to guide the hook assembly down to the load and vice versa.

Abstract: Isoindoline derivatives are disclosed, as for instance of the formula: ##STR1## and methods of preparation of these compounds, such as the reaction of o-cyano-benzylbromide with a compound of formula ##STR2## and subsequent saponification. The compounds possess analgesic and anti-inflammatory activity.

Abstract: A safety device for controlling the flow of fuel to an internal combustion engine so as to protect the engine against damage due to insufficient oil pressure in the lubricating system, or to overheating, has a restricted manual override which supplies to the engine, after a full fuel shut-off effecting a full shut-down of the engine when abnormal pressure or temperature conditions arise, a restricted amount of fuel sufficient only to run the engine at a reduced power and at reduced speed so as to prevent damage to the engine which might result were the engine to operate at full speed and full power in the absence of adequate oil pressure, or when overheated.

Abstract: Apparatus for controlling the direction of a beam of optical radiation from, say, a laser, includes two prisms of small apex angle independently rotatable about a common axis. A control circuit is responsive to the actual angular positions of the prisms and to inputs indicating the desired beam position to cause the prisms to be moved to the appropriate positions.

Abstract: The concrete vault roof of a liquid metal cooled fast reactor is provided with a heat-insulating lining plate and has a central passage for rotating shield plugs surrounded by passages for heat exchangers and pumps. An annular plate of relatively small thickness is placed horizontally beneath the vault roof and its external edge is joined to the lining plate by means of shaped members having a long radius of curvature so as to form closed spaces for trapping an inert gas. The free edges formed by the openings in the annular plate are joined to the lining plate by means of a sealing shell.

Abstract: Method and apparatus to enable integrated circuit chips to be accurately mounted on substrates. Each chip is precisely positioned with respect to connecting areas on the substrates to which it is soldered. To this end, a support block is movable horizontally along a predetermined path and adapted to receive a substrate provided with at least one set of connecting areas arranged in a predetermined configuration about a center. A cutting tool having on the one hand a cutting head movable along a working axis perpendicular to the path followed by the support block is arranged to pass through a first fixed point on the said path, and on the other hand a cutting die arranged in the path of the head is arranged to receive an integrated circuit chip mounted on a support.

Abstract: Apparatus for measuring the extent and sense of relative movement between two objects comprises a reflecting ruled grating carried on one body and optical reading head carried on the other. The reading head includes a light source arranged to produce at least three light beams which are directed at the grating and reflected therefrom onto a mirror twisted about a line parallel to the grating lines. This mirror reflects the light beams onto a different area of the grating from which they are reflected to separate light-sensitive devices. Lenses are used to focus the light beams as required.

Abstract: Fast neutron nuclear reactor comprising on the inside a main vessel having a vertical axis suspended by its upper open part on a thick protective slab which seals a cavity surrounding said vessel, a volume of a liquid cooling metal and also positioned within said main vessel an inner vessel having a cylindrical wall containing the core of the reactor submerged beneath the liquid metal level, the intermediate space between the main vessel and the inner vessel having heat exchangers and pumps which pass below the level of the liquid metal, wherein the upper end of the inner vessel is covered by an inverted annular bell cap and is placed under the internal pressure of a neutral gas in order to prevent in normal operation direct communication between the hot liquid metal within the inner vessel and the cold liquid metal in the annular space between the main vessel and the inner vessel, said bell cap covering an auxiliary exchanger which externally surrounds the inner vessel in such a way that if there is a fault

Abstract: A compound having one of the structural formulae: ##STR1## USEFUL AS INSECTICIDES.

Abstract: A system for monitoring evolutive information data picked up at various pts in associated informatics equipment and analyzing selected information data sequences comprises means for permanently recording information data on a continuous track magnetic carrier having automatic erase means at the end of each track. Recorded sequences of information data are controllably displayed after the data has been written in. At the write-to-read switching operation, an index marking the origin of the information sequences to be displayed is recorded on a special track of the carrier and said index is thereafter used for synchronization of the display on a CRT. A clock pulse counter circuit under the control of an operator enables him to vary the origin of the displays.

Abstract: Flexible annular joint having on the one hand a central core constituted by a helical spring made from metal wire with contiguous coils, which is closed on itself and in the inoperative state has the shape of a continuous ring, and on the other hand at least one envelope surrounding the central core and having in the inoperative state a cross-section formed by a curve which is not closed on itself. The internal helical spring comprises at least one continuous wire whose cross-section is a circular segment whose angle at the center is between 180.degree. and 360.degree., the chord of said segment producing the outer surface of said spring.

Abstract: A bone-seeking, technetium-99m-tin-phosphonate complex effective as a skeletal-imaging agent has been found particularly useful for diagnostic purposes. Skeletal tissue concentrations of technetium-99m obtained with the complex compare favorably to other bone-seeking radionuclides.

Abstract: Evaporation source for vacuum deposition, comprising a refractory crucible provided in its outer surface with conducting members traversed by an electric current and able to raise the crucible temperature by Joule effect, in which the said outer surface is coated, prior to fitting the conducting members, with a thin intermediate coating layer which does not react with the crucible but which is in intimate contact with the latter.A particular application is the vacuum heating to elevated temperature of crucibles.