Abstract: An apparatus for enriching respiratory gas with oxygen, wherein the entire enriched respiratory gas can be taken from an absorber bed and the enrichment concentration is adjustable by action on the total flow through the adsorber and the portion of the total flow in excess of the consumer flow is removable via an outflow, is improved so that adjustment of enrichment concentration and consumer flow independently of each other is possible and the enrichment concentration is maintained also at fluctuating consumer flow. To this end a control circuit for the stabilization of the set enrichment concentration is provided, to which is connected a control section for the adjustment of the consumer flow, and an outflow being is arranged at the junction between the control circuit and the control section.

Abstract: A toner for developing electrostatic latent images characterized in that the toner comprises an aluminum compound of a hydroxycarboxylic acid which may be substituted with alkyl and/or aralkyl.

Abstract: A product made up of a web that is a ribbon of valved bags of synthetic resin, with delimiting pairs of transversal weldings located in close proximity together and between which is formed a pre-established tear-off line permitting separation of the bags even after filling; the web or ribbon being manufactured as a roll, and the pairs of transversal weldings being adjacent to the valve of one of the contiguous bags and delimited by said weldings.

Abstract: A lubrication circuit connected to rotary vacuum pumps is composed of a hydraulic circuit and of the relative pump unit for lubrication and for auxiliary controls, including isolation of the negative pressure space from the pump on the stopping of the latter, with the aid of a closure member (10), for the operation of which use is made of the pressure of the fluid present in the pump discharge space with the aid of a duct (33, 34) between said discharge space and a means (8, 9) operating the closure member (10), which duct is subdivided into two portions between which is disposed a control member (27, 31) the operation of which is dependent on the oil pressure produced by the pump unit and propagated, with complete absence of flow, through a duct (23) so as to reach a control member (27, 31) which supervises the operation of the closure member (10).

Abstract: In this system, which is of the type comprising at the end of a primary cable (3), a first fish (5) to which is connected a secondary cable (7) towed by a second fish, there are provided, in proximity to the first fish (5), apparatus (18) for measuring the angle between the direction of the relative current and the vertical plane passing through the secondary cable (7), and apparatus for measuring the angle of inclination of the secondary cable (7) to the horizontal, connected to apparatus for automatically steering the second fish so as to bring said angles to predetermined values.

Abstract: An electrical metallurgical furnace including a vessel and a bottom electrode positioned in the bottom of the vessel. At least one counter contact is provided connected to the bottom electrode. A support is anchored to the vessel connected to the insulation mounting unit. A tension frame is held by the insulation mounting unit. At least one current cable is provided for engagement with a side of the counter contact. A pivot element is provided for supporting the current cable. A biasing apparatus is provided for urging the pivotally supported current cable into contact with the counter contact.

Abstract: The invention relates to a device usable in an amusement park in association with a rotatable carousel having a support arm which supports a cylindrical bearing for a car which is used to accommodate one or more persons. The cylindrical bearing is held substantially vertically so that it defines a rotatable horizontal axis which rotatably supports the car. The car is suspended so that the center of gravity of the car holds in a position so that it accommodates the passengers in an upright position. Means are provided to bias the car into an upright position, but to permit it to rotate about its horizontal axis. A feature of the construction is that the car is provided with a control which may be manipulated by a passenger to orient wings of the device so that the device has a tendency to effect a roll about its horizontal axis.

Abstract: A damper assembly, for supporting a seat of a vehicle such as a small-sized motor boat, comprises a lower bracket adapted to be attached to a floor of the vehicle, an upper bracket adapted to be attached to the seat, and a damper mounted between the upper and lower brackets. The damper includes an outer tube extending upwardly from the lower bracket, an inner tube extending downwardly from the upper bracket and telescopically inserted in the outer tube, and a guide tube secured to the lower bracket and telescopically inserted in the inner tube. The inner and guide tubes are connected together so as to allow the inner tube to slide longitudinally on the guide tube but so as to prevent the inner tube from rotation or turning about the guide tube.

Abstract: A support structure for devices particularly life boats and similar apparatus which is weight operated comprises a plurality of support members, each or some of which may be telescopic which are pivotally interconnected adjacent their associated interconnected ends. Each successive upper one of a pair of such members is pivotal relative to the next adjacent lowermost one about a substantially horizontal axis. The pivoting is controlled by a control mechanism which is operated from a fluid pressure source produced by the weight of the elements upon each other. The control mechanism includes means for controlling the amount of tilt of each upper element relative to an adjacent lower element and for the control of the precise angularity of the two elements relative to each other during the pivotal movement.

Abstract: A device for automatic reading of data on cheques, bankable bills and the like. A housing in which is made an open channel or slot defining a U-shaped track for the said cheques or bills. Along this track there are arranged in combination: sensor members for detecting the presence of a cheque or bill to be read; members for the conveyance of the said cheque or bill; and members for reading the data reproduced on the said cheque or bill.

Abstract: Improved anchoring of heating elements of a resistance heater to thermally stressed single crystals is achieved by embedding the individual heating element in a recess in the single crystal and permanently joining this to the heating element by a porous sintered composition. The sintered composition is formed by the heat treatment of a suspension that in addition to other components, contains material with the same chemical composition in powdered form as that of the single crystal.

Abstract: A band store includes a plurality of horizontally movable loop carts, of which one loop cart drive is traction controlled and the other loop cart drives are speed controlled, and this control is effected as a function of the speed of the traction controlled loop cart drive. Thereby synchronous running of the loop carts is achieved.

Abstract: A miniature motor having brushgear comprising brush arms with sliding parts on the tips thereof, terminals and brush bases; the brush bases being supported by a motor case cover plate, when the terminals are inserted in brush holes provided on the motor case cover plate; the sliding parts being brought into sliding contact with a commutator by the resiliency thereof, and characterized in that a flexible photo-setting resin having similar resiliency to the resiliency of vibration-damping rubber is applied to the brush arms to prevent the brushes from unwantedly vibrating during rotation of the commutator.

Abstract: A tray-like support for the mounting of a group of pneumatic or other control components such as valves so that they may operate different loads, comprises a mounting plate to carry the components. The mounting plate is connected with an elongated manifold for the compressed air or other driving fluid. The manifold has releasable means for connecting it with a driving fluid source and with ducts leading via the mounting plate to the components. The outlet ports of the components are joined with loads. The mounting plate is a laminated structure with internal ducts. The manifold is integral and is in communication with the source of driving fluid on one, while on the other side it is connected with ducts in the plate. The manifold has ducts therein leading from the mounting plate to loads and provided with rapid venting valves. On the side of the plate facing away from the components there is an electronic circuit board with a control system for the components.

Abstract: In a photothyristor provided with a cathode, a gate and an anode, the impurity densities of gate (base) portions 20 and 21 are made unequal to each other. The minority carriers are stored in the high impurity density regions 20, the majority carriers are permitted to readily pass through the low impurity density regions 21, and the high and low impurity density regions are electrically coupled together. This thyristor is extremely high in sensitivity and high-speed in operation.

Abstract: A process for producing a hollow fiber mass transfer module with a number of hollow fibers sealed into a housing is improved according to the invention with regard to the development of a desirable flow space in the surface area of the hollow fibers by the fact that a spacing material is applied to the outsides of the hollow fibers before their insertion into the housing (2). The thickness of the material is chosen to conform to the desired separation of the hollow fibers. The hollow fibers are arranged substantially parallel and inserted as a bundle into the housing and are fixed with the grout. The spacing material can have a layered or particulate and granular form. A hollow fiber mass transfer module produced by the process pursuant to the invention has hollow fibers suitably arranged at uniform mutual spacings.

Abstract: A lighting device for a sewing machine which has a housing with a base and an upright portion mounted on the base and an arm carried by the upright portion which overlies the base in which there is positioned a movable thread needle which operates below the arm to sew materials and which comprises a light source carried in the housing and a flexible sheath supported in the arm of the housing and extends outwardly of the arm in the vicinity of the needle. The sheath carries at least two light guides which have first ends exposed to the light source mounted on the sewing machine housing and an opposite second ends which extend out of the sheath in the vicinity of the needle. The sheath and the light guides are bendable so as to arrange the second ends of the light guide in a selected manner for illuminating selective areas in the vicinity of the needle.

Abstract: Calculations by an envelope circuit and a waveform calculation circuit, which are principal functions of an electronic musical instrument, can be performed by the same calculation routine through use of the same general formula A=B.+-.C.times.D. Accordingly, their circuit structures are substantially simplified and the circuits can be fabricated as a one-chip large scale integrated circuit.