Abstract: A laminated wooden structural assembly is disclosed comprising at least one multi-ply wooden web member formed of a pair of spaced outer layers and at least one inner core layer bonded between the outer layers, and at least one wooden flange member arranged adjacent one longitudinal edge portion of the web member. The web and flange members are connected by joint means including a straight machine tapered longitudinal slot contained in one surface of the flange member, and a machine tapered longitudinal edge portion of the web member that is inserted with a friction fit into the slot. Each inner core layer of the web member is arranged with its grain direction extending toward the longitudinal edge portion of the web member, the outer layers being arranged with their grain directions extending parallel to the flange member. The flange member is arranged with its grain direction extending in a direction longitudinally and parallel with the grain direction of said web outer layers.

Abstract: A composite container is disclosed having a synthetic plastic end closure member spin-bonded to the thermoplastic synthetic plastic inner liner layer of a composite container body wall. The synthetic plastic end closure member includes annular downwardly depending inner fin and outer chime portions which are concentrically spaced to define therebetween an annular groove. One of the body and end members is rotated relative to the other member when they are in spaced vertical alignment, whereupon the members are axially displaced together to wedge the upper end of the body member into the annular groove of the end closure member. During this spin bonding process, the fin portion of the end closure member is supported against radial inward deflection, whereby the spinning frictional engagement between the fin portion of the end closure member and the inner liner layer of the body member causes softening and subsequent bonding of the fin portion to the inner liner layer.

Abstract: A latent heat accumulator is disclosed including an upright container hav, in a major volume first section, a latent heat storage medium, and a passage for a heat exchange medium extending through the charge in the first section. The passage is of the type of a conduit provided with intake openings at different levels. The flow of heat exchange medium through the conduit generates low pressure at the intake openings with the result that a part of the surrounding charge of the heat storage medium is drawn into the conduit for thorough intermixing and heat transfer. The intake openings are preferably protected to prevent large solidified particles of the heat storage medium from blocking the openings or from entering the conduit. The invention improves the heat transfer capacity and reduces the charge of the heat storage medium entering the associated heat exchange circulation system while retaining a relatively simple structure of the accumulator.

Abstract: A method and apparatus for obtaining water at a desired temperature from a generally vertical tank such as a water heater is disclosed, characterized in that water is drawn from the tank at a plurality of spaced vertical points where the water temperature has the desired temperature. The tank contains a quantity of water having a variable non-uniform temperature. A vertical pipe open at its upper and lower ends is centrally arranged within the tank, the lower end of the pipe extending through the bottom of the tank to define a water outlet. A plurality of normally closed, temperature responsive valves are connected with the pipe in vertically spaced relation. Each of the valves is operable when the water adjacent thereto has a predetermined temperature to deliver that water to the pipe, whereby the water at the outlet will have the predetermined temperature.

Abstract: Test apparatus for monitoring transmissions contained in a broad band television video signal is disclosed including a sampling device operating at an integer multiple of the digital bit rate which is above the Nyguist level and a temporary storage device for storing the sample produced by the sampling device. A microprocessor is used to compute from the stored samples a value of a parameter of the digital transmission and to control the sampling device whereby the sample can be taken at appropriate points for the parameter to be tested. To that end, conversion means are provided for converting the stored samples so as to recreate the input digital transmission for resampling at the points determined by the microprocessor.

Abstract: A composite container is disclosed having a synthetic plastic end closure member spin-bonded to the thermoplastic synthetic plastic inner liner layer of a composite container body wall. The synthetic plastic end closure member includes annular downwardly depending inner fin and outer chime portions which are concentrically spaced to define therebetween an annular groove. One of the body and end members is rotated relative to the other member when they are in spaced vertical alignment, whereupon the members are axially displaced together to wedge the upper end of the body member into the annular groove of the end closure member. During this spin bonding process, the fin portion of the end closure member is supported against radial inward deflection, whereby the spinning frictional engagement between the fin portion of the end closure member and the inner liner layer of the body member causes softening and subsequent bonding of the fin portion to the inner liner layer.

Abstract: A portable support platform formed of lightweight material such as corrugated paperboard is disclosed. The platform is formed from a generally rectangular unitary blank having a rectangular top wall panel and opposed pairs of end wall panels and end flaps defined by first and second pairs of parallel fold lines, respectively. The blank further includes opposed pairs of side wall panels and side flaps defined by third and fourth pairs of parallel fold lines, respectively, the pairs of third and fourth fold lines being normal to the pairs of first and second fold lines. The end and side wall panels all have an equal width.

Abstract: A magnetic smoke and fire shield is disclosed for installation adjacent an air register associated with a building conduit to control the conduit opening. The apparatus includes a frame containing an opening, and a closure member connected with the frame for movement between open and closed positions relative to the frame opening. At least one of the closure members and frame is formed of ferromagnetic material, the other member having magnetic sealing means associated therewith. The closure member is retained in the open position by means including a fusible link set to melt at a predetermined temperature. The closure member may also be released manually. Upon the occurrence of a fire, the closure member is released to a closed, magnetically sealed position relative to the frame opening.

Abstract: A compressor rotor for a turbine comprises individual segments radially stressed by a bandage of fibre-reinforced material which is under prestress when the rotor is stationary. The bandage cross-section has regions of different stiffness and different tensile strength, constituted by retaining rings arranged one inside another or side-by-side.

Abstract: A measuring device for hollow cylindrical surfaces, such as bores and the like, comprises a housing to be fixed in the bore by clamps, a measuring arm rotatable by a first step motor, a measuring head axially movable along the measuring arm substantially parallel to the axis of the bore surface by a second step motor and a sensor incorporated in the measuring head and radially movable relative to the measuring head against the force of a leaf spring in contact with the bore surface. The leaf spring supports strain gauges, the output signals of which are representative of the radial or transverse paths of the sensor and thereby for the shape of the bore surface to be measured.

Abstract: A system for surround sound utilizes three audio channels two of which are either in phase of 180.degree. out of phase for all angles of elevation and azimuth of the incident sound and which can be decoded to give good quality stereo reception. The third channel contains the signal indicative of the "front-back" information and this signal is chosen to yield the best quality of surround sound reception consistent with minimum interference to the quality of mono and stereo reception for a given type or range of program material. Preferably, the third channel is phase shifted by 90.degree. with respect to the phase of the other two channels. The three audio channels can be derived directly from three directional microphones or can be derived from the Ambisonics `B` format in which case an encoding matrix of the following form is used: ##EQU1## where .SIGMA., .DELTA. and T are the signals in the three audio channels and W, X and Y are the input signals to the encoding matrix.

Abstract: A water cooling tower is disclosed which comprises cooling means and a suction fan arranged in the air outlet passage. Water catching means is provided including at least one water catching channel formed in the wall of the air outlet passage at a location other than the narrowest cross section of the air outlet passage, which channel collects water separated at and flowing along the air outlet passage wall. A water discharging device connects the channel directly with a collecting basin for draining the water.

Abstract: Hydrogen evaporating in a liquid hydrogen tank is fed to a fuel cell generating electrical energy used to drive a cooling unit which cools the tank.

Abstract: An explosive body having an intensified detonation pressure is disclosed, characterized in that the body includes a main explosive charge and an auxiliary explosive charge. A material is arranged between the charges for transmitting the impact wave from the detonating auxiliary charge to the main charge. Detonation of the main charge is delayed following detonation of the auxiliary charge, whereby the impact wave of the auxiliary charge compresses the explosive of the main charge. Thus, the intensity of the resulting detonation pressure of the main charge is increased.

Abstract: There is provided a method and an apparatus for producing electrical power nd for the simultaneous heating of fluid by means of a magnetohydrodynamic (MHD) generator. The method comprises providing a heating means for heating a mixture of liquid metal and an organic liquid to form a two-phase liquid metal-vapor flow, directing the two-phase liquid metal-vapor through a MHD-generator to generate electricity, condensing the vapor phase from the two-phase liquid metal-vapor to form liquid metal carrying organic liquid droplets, and recycling the metal and organic liquid droplets to be reheated by the heating means.

Abstract: A flat measuring string is disclosed that is formed from a blank of sheet metal (such as a niobium-zirconium alloy), characterized by the provision of bendable or foldable wing flaps arranged at the nodal portions of the string, thereby to permit the connection of nodal masses to the string. In this manner, it is possible to achieve good measurement-technical data, especially, data regarding hysteresis and creepage under load, coupled with extensive freedom in the choice of materials and very economical mass production of the string components. The measuring string is particularly suitable for use in force or distance measurement.

Abstract: An injection head introduces H.sub.2 and O.sub.2 into one end of an elongate combustion chamber. At the same time, water is injected into the chamber through peripheral ducts to form a water curtain, or through inlets in the injection head, or through apertures facing away from the injection head in water-cooled tubing extending in a plane perpendicular to the chamber axis.

Abstract: A composite container for fluent materials in the liquid or semi-frozen state is disclosed, together with a method for making the same. The container includes a vertically arranged body member that is flared at its upper end, and an end closure member is provided including a circular central panel portion arranged within and extending across the upper end of the body member, annular chuck wall portion extending upwardly from the central panel portion adjacent the flared portion of the body member, and an annular connecting flange portion extending radially outwardly from the upper end of the chuck wall portion. The invention is characterized in that the connecting flange and chuck wall portions cooperate with the flared portion of the body member to define an annular space in which is arranged a resilient annular mass of sealing material.

Abstract: An improved composite container is disclosed including a tubular fibrous body wall having at its upper end a reversely curled portion the upper extremity of which is radially inwardly compressed in such a manner as to form an annular external locking projection by means of which a synthetic plastic closure cap may be fastened to close the container. Preferably the closure member is connected with the container by a tearable tamperproof connection including a radially inwardly directed annular rib that is locked beneath the annular body projection to maintain the closure cap on the container. A method is also disclosed for forming the container body, including the steps of radially outwardly curling the upper end of the body member, radially inwardly compressing the upper extremity of the reversely curled portion, and mounting a synthetic plastic snap-type closure member on the compressed curled end.

Abstract: A weighing apparatus with electromagnetic force compensation is disclosed, including a load portion having a first compensation or load coil, and a reference portion having a second compensation or reference coil. An associated permanent magnet system is provided in the form of a partially closed housing having an intermediate wall on which flat permanent magnets are mounted, preferably in pairs. The load coil and the reference coil are arranged on opposite sides of the intermediate wall, thereby providing a compact arrangement which is easy to assemble and which has particular properties in regard to mutual decoupling of the two compensation coils.