Abstract: In a nuclear reactor having the fuel disposed within a large number of pressure tubes fed in parallel with liquid coolant which is partly vaporized while flowing through the pressure tubes, the invention provides a coolant-supply header assembly comprising parallel-extending sub-header pipes which at their ends are connected by end pipes and which have water outlets (for connection to the individual pressure tubes) distributed along their lengths, and header pipes each extending transversely across the sub-header pipes at spaced intervals therealong and having a water inlet and a plurality of branch pipes each of which connects to a respective one of the sub-header pipes.

Abstract: A receiver for use in a signalling system of the kind in which data is conveyed by transmitting a signal having alternately first and second frequencies. The receiver has circuitry for providing in response to the received signal two trains of pulses with frequencies corresponding to that of the received signal. The trains of pulses are fed to delay and coincidence detecting circuits which are so arranged that a first coincidence gate circuit produces an output only when the received signal has its first frequency and a second coincidence gate circuit produces an output only when the received signal has its second frequency.

Abstract: A constant flow rate liquid medicament administering device which includes a container having a liquid medicament therein. The liquid medicament is fed under pressure to a constant output flow rate regulator that is operated by a drop in pressure between its inlet and outlet. The liquid leaving the regulator under reduced pressure and at a constant flow rate independent of entering pressure is led to a drip chamber in which any gas entrapped in the liquid is released so as to prevent introduction of gas into a patient. The drip rate in the chamber furnishes a rough visual indication of flow rate, the regulator being adjustable to secure any desired rate. Either before or after passage of the liquid through the drip chamber, the liquid is passed through a flow rate indicator which more accurately provides an instantaneous reading of flow rate. Finally, the liquid is led to an administering implement for introducing the liquid into a patient at a constant flow rate.

Abstract: A circuit for controlling the energization of a night lighting load or the like, in which failure of the main circuit to control and shut off electrical supply to the load during daylight hours leads to permanent shutdown of the electrical supply to the load. Two photosensitive elements are provided in the circuit. One element, e.g. a photocell, is a main control which periodically operates a relay and supplies electricity to the load, i.e. at night. The second element, e.g. a second photocell, is connected in the circuit, together with a second relay, in such a manner that failure of the first relay to operate and open the load circuit during daylight hours will cause the second relay to operate and permanently open the load circuit.

Abstract: Pushbutton telephone subscriber's apparatus in which there is provided a light pen arrangement for reading printed bar-code patterns representing series of decimal digit values, such as telephone numbers, and for converting the signal voltages obtained from reading these patterns to a form which can be signalled by the subscriber's apparatus over an associated telephone line. The bar code patterns may for example be printed in letter headings or in telephone directories adjacent the conventionally printed digit values.

Abstract: This invention relates to a head-up display unit having at least a part so disposed, when in use in a vehicle, as to intercept the line of sight of an observer using the unit to view a scene lying ahead of him. The display unit employs a light deflecting arrangement to enable the observer to see the part of the scene obscured by the unit and includes optical means for projecting light rays from a luminous signal source into the light deflecting arrangement thence to the observer, who sees the luminous signals superimposed on his view of the scene ahead.

Abstract: An automatic pilot for a sailboat includes a mode switching arrangement which permits a person to operate the sailboat in any one of several modes. One is the STEER mode, a second is the OFF mode, a third is the STANDBY mode, a fourth is the WIND mode and a fifth is the COMPASS mode. Another switching arrangement enables either the WIND mode or COMPASS mode to be operated in COURSE CHANGE sub-mode manners. Various mechanisms and circuitry further are included to enable the sailboat to be manually steered, to stabilize the rate of change of rudder position, to null a control that is a function of the change in heading error, to wash out certain signals under certain conditions, to inhibit certain signals under certain conditions, and to provide a steering command that furnishes a visual direction to the steersman when the automatic pilot is in a COURSE CHANGE sub-mode.

Abstract: An improved air bleed or full air discharge control valve assembly for a sphygmomanometer cuff in which a stem of the valve extends through and, in idle condition of the valve, sealingly engages the central opening of a resilient O-ring and is manipulated to release air either by being manually tilted about its inner end against a restoring force to temporarily enlarge the opening and thus provide a transient gap between the opening and the valve stem for accurately controlled bleed of air from the cuff during blood pressure measurements as long as the stem is tilted, or by being shifted axially to assume and maintain a position in which it permits rapid total air egress from the cuff through a central axial bore in the stem and at least one transverse opening from the bore to the outer surface of the stem.

Abstract: The essence of the invention resides in the positioning of a micro-switch on a cushion rod or its equivalent which reacts to the impact of a bowled ball against the cushion even when the ball impacts against the cushion very lightly. The light impact urges the closing of contacts in the micro-switch to energize a control circuit which commences the operation of a time delay means via a switch circuit so that a three second time delay is positively initiated before the cycling of the pinsetting machine takes place. The three second time delay occurs through an RC time constant in a electronic circuit and continues uninterrupted even if the bowled ball vibrates against the cushion.

Abstract: A manipulative puzzle game consisting of a rectangular parallelepiped box having a transparent front wall. A plurality of identical cubes are disposed within the box. At least one plane face of each cube bears a visually distinguishing feature. The objective of the game is to arrange the cubes by manipulating the box, so that the visually distinguishing features of the cubes are in a selected order. The number of cubes is one less than the capacity of the box for such cubes. The width of the side walls of the box is slightly greater than the diagonal of a face of a cube, and less than twice the edge length of a cube, so that the stacks or layers of cubes are of a thickness of the edge dimension of a cube, i.e., one cube thick, and so that careful manipulation of the box by horizontal twisting or by tapping the box causes the rotation of at least one of the cubes about a central vertical axis.

Abstract: In a nuclear reactor installation comprising a fluid-cooled nuclear heat source within a primary pressure vessel, the latter is enclosed within a secondary containment means which comprises a lower wall portion surrounding the primary pressure vessel, an annular portion extending out from the lower wall portion, and an upper portion integral with the annular portion and extending over it and over the primary pressure vessel and housing handling means for lifting fuel and other reactor components through normally sealed vertical penetrations in the roof of the primary pressure vessel (giving access to the reactor core) and in the said annular portion (giving access to new and spent fuel stores and other auxiliary facilities disposed outside the secondary containment and wholly or partly below the said annular portion).

Abstract: A resilient material such as rubber is pulverized into particles. The particles are then coated with dry cement. In one embodiment of the invention the coating may be accomplished by heating the particles until their outer surfaces become viscid and the mixing the particles with cement so that when the cement contacts the viscid outer surfaces, it will adhere thereto, enveloping the particles with a layer of cement. In another embodiment, the cement may be heated and then brought into contact with the particles. The outer surfaces of the particles will become adhesive and the cement will adhere thereto. In a further embodiment, the particles may be coated with a plastic film. The plastic coated particles are then coated with cement as described. Alternatively the plastic coated particles may be mixed with the cement before the plastic has set. The cement will adhere to the still unset plastic coating. In each of the embodiments, the cement will be permanently bonded to the particles.

Abstract: In a nuclear reactor installation comprising a fluid-cooled nuclear heat source within a primary pressure vessel, this latter and also auxiliary facilities including new and spent fuel stores are enveloped together within an outer envelope which is designed to afford protection from external missiles; but within this envelope the auxiliary facilities are isolated from the primary pressure vessel by pressure tight structure which, with the major part of the outer envelope, constitutes secondary containment means of the installation.

Abstract: A locking device composed of two strips of metal bent into specific configurations to provide a tamper-proof assembly when emplaced on a lidded container. One strip is fixed to the container by a concealed screw within the container. The other strip overlies the lid and includes a portion superposed over a portion of the one strip. The aforesaid portions of the strips are provided with registered holes through which the shackle of a padlock is threaded to lock the assemblage in place and prevent the opening of the lid. The invention is applicable for locking any lidded boxes or containers, e.g. electric meter wiring cabinets, to prevent the tampering with elements within the box such as service wires interposing an electric meter between power lines and house lines.

Abstract: A one-step powderless high-speed process for producing photoengraved letter-press printing and pattern plates from magnesium and alloys thereof by etching such plates in a machine that directs against a surface of the plate droplets of an etching liquid comprising an aqueous solution of a strong inorganic acid and adjuvants.

Abstract: Apparatus including a telephone instrument for connection to a public telephone system has provision for a call connection to be set up through the system to just a single party upon operation of a single push-button. A plurality of electric switches are preset (usually prior to installation of the instrument) to characterize the directory number of the party that can be called. Upon operation of the push-button, electronic circuitry scans the switches characterizing the directory number to cause the decimal digits of that number to be written sequentially into storage circuitry which subsequently generates a train of impulses in respect of each such digit for transmission to line. There is provision for the scanning operation to be halted for a predetermined period after some of the digits have been written into the storage circuitry.

Abstract: A roll-on dispenser bottle for dispensing cosmetics, deodorants, and the like, in which a plastic ball is mounted in the mouth of a glass bottle and a separate resilient ball retainer is provided which extends from the neck of the bottle. A cap also is provided which contains an insert having a protuberance and a shoulder or shelf which act to constrict the retainer on the ball and press the ball into a seat in the mouth of the bottle when the cap is firmly in place on the neck of the bottle, so as to provide positive closure when the bottle is not in use.

Abstract: A double-rope winch, which is designed for supporting a load such as a lantern carriage from the top of a high mast, has a primary drum which receives one of the ropes and is provided with driving means to which a winch-operating tool can be connected, and a secondary drum which receives the other rope and is connectable to the primary drum through a linkage including engageable means, so that both drums can be driven together for raising and lowering the load when said drums are connected by the engageable means but so that when the latter is not engaged the primary drum can be driven by itself for balancing the load. The linkage may consist of an endless band passing round both of a pulley keyed to the secondary drum drive shaft and a pulley which is rotatable on the primary drum drive shaft and is provided with dogs which can be drivably engaged or not, as required, by a winch-operating tool applied to the primary drum drive shaft.

Abstract: An ignition switch including a key receiving lock cylinder. A pin is movable by the insertion of the key in the key receiving lock cylinder. A conducting switch leaf is connected to the hot terminal of a battery and is biased to touch a first contact of a two contact switch in the absence of any external force acting thereon. Insertion of the ignition key in the key receiving lock cylinder moves the pin so that the switch leaf is placed in contact with the second contact. When the key is removed from the key receiving lock cylinder, the switch leaf under its own resiliency moves and touches the first contact. Different circuits can be activated when the switch leaf is in circuit with either of the contacts.

Abstract: A reinforced horizontal slab having high bearing strength is created on the surface of the ground by initially forming a plurality of discrete vertically elongated reinforced zones in situ in the ground with their tops adjacent ground level and then covering the ground over and between the zones with a surfacing material constituting a slab that rests on the tops of said zones and on the ground therebetween. Each zone is a downwardly tapered concrete column having at least one vertically oriented reinforcing metal bar embedded therein.