baber/WOPTO huggingface dataset:
Patent GB-887392-A (GB)
Title: Improvements in or relating to control apparatus for nuclear reactors
Inventor: CAMPBELL RONALD HUGH
IPC: G21C7/36
Filed: 1959-07-06
Abstract: 887,392. Nuclear reactors. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. June 17, 1960 [July 6, 1959], No. 23106/59. Class 39(4) A control apparatus for a nuclear reactor comprises means for deriving a primary control term from a temperature measurement taken at a point in the reactor core, means for deriving an additional control term as a function of reactor flux and coolant flow, and means for combining the two terms to provide a composite control term. In the Figure the reactor is provided with a plurality of thermocouples 18 (of which only one is shown) for measuring the temperature of gas emerging from a fuel channel, each thermocouple being connected to one contact of a multi-position switch 22 so that the output of any one of them may be used. The primary control term is derived by subtracting the output of one of the thermocouples 18 from a reference voltage derived from potentiometer 34. The reactor is also provided with a neutron flux measuring in chamber 28 and with a flow meter 30 for producing a voltage proportional to the coolant flow in the inlet duct. The voltages produced by these two units are subtracted in unit 29 and differentiated with respect to time to give an additional control term which is fed to amplifier 32. The output of amplifier 32 is used to control the motor which raises or lowers the control rod 15. The rate of change of temperature may be used as the primary control term instead of the temperature itself.
Patent GB-685164-A (GB)
Title: Improvements in or relating to chairs
IPC: A47C1/027
Filed: 1950-09-21
Abstract: 685,164. Seats. FREEDLAND, M. M., and FREEDLAND, J. June 12, 1951 [Sept. 21, 1950], No. 23123/50. Class 52(ii) A chair having a back which is adjustable, and securable, independently of the seat which may be a fixed one, comprises a chair frame 1 having upstanding styles 3, a back having styles 6 and intermediate back board 7, plates 8 on the inner surface of the lower parts of the styles 6 and pressure plates on the outer surface, all secured together by bolts 9, the lower ends of the plates 8 being each. provided with a pivot pin 12 engaging an aperture in each style 13 of the chair frame 1. The styles 3, 6 have adjacent curved bearing surfaces an an arcuate slot 13 is provided in each style 3 and pressure plate with which engages a square-headed bolt 14 carried by each style 3 and plate 8, the bolt 14 being provided with a wing nut for securing the back in adjusted position, the limits of adjustment being determined by the ends of the slot 13. In addition, a nib 18 is,adapted to bear on an abutment formed by a cross-bar 5 to prevent backward movement beyond a predetermined maximum inclination.
Patent GB-836463-A (GB)
Title: Improvements in or relating to tailstocks for lathes and other machine tools
IPC: B23B23/00
Filed: 1957-07-22
Abstract: 836,463. Tailstocks. ETABLISSEMENTS A CAZENEUVE, and BRUET, H. R. July 22, 1957 [Aug. 10, 1956], No. 23157/57. Class 83 (3). An arrangement for " setting over" the centre in a lathe tailstock comprises a slidable barrel with an eccentric bore and a key, engaging the outside of the barrel, which is adapted to be moved laterally to produce a small angular movement of the barrel. The tailstock 1, Fig. 1, is adapted to be adjusted and clamped in position along the bed 1. A barrel 3 is slidable longitudinally in a bore in the tailstock, and is provided with a part-cylindrical keyway or groove 6. The latter is engaged by an adjustable-key 7 held in the groove by a screw 8 with a ball-head 9. The key is held transversely between two adjusting-screws 10, 11, which enable the key to be adjusted a small amount about the ball of the screw 8 and thus rotate the barrel through a small angle. The tapered bore, Fig. 3, at the end of the barrel, adapted to take a centre or a drill 22, is arranged eccentrically to the axis of the barrel 3, so that rotation of the barrel in the manner described, adjusts the centre.
Patent GB-961033-A (GB)
Title: Viewfinder device connected to the objective of photographic cameras
Inventor: LANGE GUNTHER
IPC: G03B19/12
Filed: 1960-07-01
Abstract: 961,033. Photographic cameras. CARL ZEISS-STIFTUNG, [trading as CARL ZEISS [Firm of]]. July 1, 1960, No. 23190/60. Headings G2A and G2J. In a photographic or cinematographic camera, some of the light entering the objective is reflected into a viewfinder system, which produces a real image of the object to be photographed observable by interposing further optical means, by two mirrors located in front of the iris diaphragm of the objective and lying outside the optical axis in a single plane inclined relative to the axis. As shown two small mirrors 8, 9 disposed on a diagonal plane of a block 7 as shown in Fig. 2 reflect light from the scene through a group of lenses identical to the rear group III of the pancratic objective to a plane 15 incorporating a split-image focusing aid 16, the finder image being viewed through an erector system. The focusing aid may comprise a sheet having a series of parallel roof ridge element (Fig. 5 not shown) or two such series side-by-side with the ridges of one set in line with the valleys of the other (Fig. 6 not shown) or two side-by-side oppositely directed sets of parallel saw tooth elements having their surfaces perpendicular to the body of the sheet aligned (Fig. 4 not shown). The spacing of the mirrors 8, 9 is preferably such that the diaphragm is unobstructed at an aperture of f/8 and the refracting angles of the focusing aid are chosen so that the double images formed by the two mirrors and the focusing aid are seen in the viewfinder at the interocular distance. It is stated that the invention may also be applied to television cameras.
Patent GB-1521336-A (GB)
Title: Screw-type band clamp or clamping collar
IPC: F16L33/08
Filed: 1976-06-04
Abstract: 1521336 Band clamps TRIDON-SERFLEX SA 4 June 1976 [4 June 1975] 23270/76 Heading E2B  In a worm-and-rack type band clamp a slot 36 is provided to accommodate the underside of pressed-out rack teeth 30, Fig. 8. The worm is held in a kennel-shaped housing 22 having legs 42 crimped under the strap at 50.
Patent GB-778810-A (GB)
Title: Process for manufacturing crystallised pure and anhydrous phosphoric acid
IPC: C01B25/234
Filed: 1954-08-11
Abstract: <PICT:0778810/III/1> Pure anhydrous crystalline ortho-phosphoric acid, 98 per cent at least, is prepared by heating the surface of a thin layer of an aqueous solution of phosphoric acid to cause superficial evaporation of water until a concentrated solution containing at least 68 per cent P2O5 is obtained, cooling the concentrated solution to form crystals which are allowed to grow until their largest dimension is at least 1 mm., preferably exceeding 2 mm., and centrifuging the crystals from the mother liquor.  An oxidizing agent should be added to the aqueous solution to prevent the formation of pyro- or meta-phosphoric acids and to destroy impurities, particularly an oxidizing agent of which some or all the reduction products are volatile, e.g. a chlorate, hydrogen peroxide, a permanganate, a perphosphate, or a compound obtained by anodic oxidation of the starting solution. The amount of oxidizing agent may be in excess of that required to destroy all oxidizable impurities. Aqueous acid solution from 1 passes through pairs of tanks 3, 4 in series in which it is heated by infra red emitters 7 under reduced pressure to 100 DEG C. and above 100 DEG C. respectively.  Evaporated water is extracted by an intake fan through 10.  The concentrated solution is cooled to 50 DEG C. in heat exchanger 15, and passes to crystallizer 16, where it is cooled to 18-20 DEG C. by circulating water jacket 17 while stirring. The stirrer rotates at 1-2 cm/sec to avoid breaking up crystals. The crystals are removed by air pressure to centrifuge 20, where mother liquor is separated.
Patent GB-743447-A (GB)
Title: Improvements in or relating to the granulation of blendes or/and other zinc compounds in a fine form
Inventor: QUINTIN ALBERT ANDRE JOSEPH
IPC: C22B1/243
Filed: 1953-08-24
Abstract: 743,447. Agglomerating ores &c. COMPAGNIE DES METAUX D'OVERPELTLOMMEL ET DE CORPHALIE SOC. ANON. Aug. 24, 1953, No. 23317/53. Class 82(1). In a process for the granulation of finely divided zinc compounds or blendes using zinc sulphate as binding material, the production and granulation of a paste of the materials is carried out between about 70‹C. and about 100‹C. and in an atmosphere the temperature and humidity of which are controlled so that the material shall not cool off, and little or no exchange of water shall take place between the material and the atmosphere. As well as, or instead of, the slight hardening due to the slight loss of water, a subsequent hardening of the grains may be effected by cooling them. The granulation may be carried out in the apparatus shown, in which zinc blende from a hopper 11, and sulphuric acid from a tank 15 and water from tank 18 under control of needle valves 16 and 19, are supplied to the mixer crusher 1 in which mill stones 2 rotate. The paste is delivered by screw 9 into the rotary drum 21 for granulation, the right-hand portion of which has ribs 27 to provide the necessary fall for the granules during rotation. The temperature is controlled by means of hot gases or steam circulating in the double walls 7, 8 and 22, and steam may be admitted at 30 and 32. Specification 715,832 is referred to.
Patent GB-890969-A (GB)
Title: A dispenser for particulate material
IPC: B65B1/36
Filed: 1959-07-08
Abstract: 890,969. Dispensing measured quantities. HANSELLA-WERKE A., HENKEL A.G. July 8, 1959 [Aug. 18, 1958], No. 23432/59. Class 106(5). Particulate material is measured by feeding it downwards into measuring chambers 2 which rotate in a circular formation and have excess material swept off sideways from them by an annular sweeper 4 which is disposed eccentrically of the circular formation with its external effective circumference encompassing the centre of such formation. The material is fed from a hopper 6 and vibrating shoot 5 to a rotating plate in which the chambers 2 are circularly arranged; swingable doors 3 are fitted to the bottoms of the chambers. Above the plate I the sweeper 4, which consists of separate annularly-arranged lifts 4a, is rotated more rapidly than is the plate 1 and sweeps the excess material into a gap between the brush and enclosing wall 1b. The control circuit of the shoot 5 includes variable resistances, one of which is arranged to be inserted in the circuit to reduce the stroke of the shoot should an excessive supply of material cause a feeler lever 7 disposed in the gap to be lifted respectively to open a switch 9.
Patent GB-1464411-A (GB)
Title: Method and apparatus for  the repair of walls
IPC: E04G23/02
Filed: 1974-05-28
Abstract: 1464411 Repairing furnace linings HOOGOVENS IJMUIDEN BV 28 May 1974 [28 May 1973] 23485/74 Heading F4B [Also in Division E1] Cracks or fissures such as may occur in refractory walls are repaired by apparatus comprising a scoop 4 rotated by a disc 2 so that the scoop has a velocity of at least 60 m./sec. Pasty or viscous, repair material is scooped away as it emerges from a pipe 6 and is thrown centrifugally into the damaged location. The apparatus is hand held and may be operated in any orientation. The disc 2 may be driven by an air turbine 1 with air supplied through the pipe 5.
Patent GB-480021-A (GB)
Title: Improved fitting for connecting pipes to containers
IPC: F16L41/14
Filed: 1936-08-27
Abstract: 480,021. Connecting pipes to containers. MAYNER, E. W. Aug. 27, 1936, No. 23534. [Class 99 (i)] A pipe &c. 19 is connected to a closed-in container 9 by a fitting which comprises a sleeve 1, provided with a flange 2 of smaller diameter than the hole 11 in the container, a metal ring 5 of greater external diameter than said hole, rubber 'washers 8, 15, a metal washer 16, a thin fibre &c. washer 17, and a clamping member such as a nut 18. The ring 5 consists of two halves hingedly connected together by means of a pin 6 so as to permit of its insertion into the container, the free ends of the halves being provided with complementary interengaging lugs and recesses 7, and the washer 8 is preferably provided with a raised portion 10 to fit the hole 11. The assembly and tightening of the fitting is facilitated by a bent rod 12 formed at each end with a flat head 13, 14 for successive engagement with a thread 3 and lugs 4 of the sleeve 1 respectively, the long sides of the head 13 being screwthreaded as shown.
Patent GB-770959-A (GB)
Title: Improvements in a photographic iron-silver color process
IPC: G03C7/46
Filed: 1954-08-13
Abstract: 770,959. Photographic iron-silver colour process. MARTINEZ, M. P. L. Aug. 13,1954 [Aug. 21, 1953), No. 23632/54. Class 98(2) A film is sensitized with a ferric salt, imagewise exposed to produce ferrous ions in the light-affected areas, treated with a silver salt solution to produce a silver image, and treated as by toning, dye toning, dye imbibition (mordantly), and particularly bleaching and colour development, to produce a colour image from the silver image. For multicolour images sensitizing and all other procedure is repeated using a set of separation negatives for the exposures. The ferric sensitizers require intense light exposure but such and all operations can be effected to a continuous moving film and have the advantage in multicolour work of resensitizing the film equally without regard to any existing images, to produce, finally, multicolour images in the form of a colour mixture all in one plane and without discernable grain. Three formulae for the ferric sensitizers, two of which contain gelatin, for processing with an ammoniated silver nitrate solution containing sodium sulphite and borax are provided; processing first yields a sepia to black image which is fixed and washed normally and is then ready for the colour procedure. In Example 1 a gelatin coated celluloid film is imersed for one minute in ferric ammonium oxalate solution, dried for another minute, strongly exposed for one to three seconds under the green filter negative of a separation set, immersed for 30 seconds in the silver solution quoted above, rinsed, fixed in hypo for one minute, washed for four minutes, bleached for one minute in a potassium ferricyanide - oxalate solution, washed, colour developed to magenta in an alkaline diethyl - p - phenylene diamine with p - nitro - benzyl cyanide solution, and then bleached again, rinsed, fixed and washed as in normal practice. Without drying the same ferric sensitizer is applied again and the whole sequence performed twice more using a phenyl phenol salt as cyan developer and acetoacetanilide for the blue. In Examples II and III a normal positive film is exposed under the green filter negative and colour developed to magenta in the normal way and the other two colours are provided by the ferric sensitizing sequences of Example 1.
Patent GB-987162-A (GB)
Title: Improvements relating to longitudinal leaf springs for vehicles
Inventor: NALLINGER FRIEDRICH
IPC: B60G11/12
Filed: 1963-06-13
Abstract: 987,162. Springs. DAIMLER-BENZ A.G. June 13, 1963, No. 23673/63. Heading F2S. The ends of a leaf spring 2 are connected to a vehicle at each end by a ball-joint the ball 5 in each of which has a slot 10 which receives the corresponding ends of the two upper spring leaves 4, 11 and a U-shaped retaining piece 12 which is secured, e.g. by rivets 73, to the leaf 4 the ball 5 being mounted in a two-part socket 7, 7<SP>1</SP> provided with a ring seal 17. If the joint does not include self-lubricating plastics material a lubricating passage 18 may be provided.
Patent GB-1526364-A (GB)
Title: Compositions for flameproofing plastics
IPC: B01J13/02
Filed: 1976-06-08
Abstract: 1526364 Flameproofing plastics RHONEPOULENC INDUSTRIES 8 June 1976 [19 March 1976] 23680/76 Headings C3R and C3P [Also in Division C1] A flameproofing composition comprises:- (a) from 50-95% wt. of red phosphorus in the form of a powder having a mean particle size not exceeding 200 Á; and (b) from 5 to 50% by weight of a thermoplastic phenolformaldehyde novolac polycondensate of molecular weight from 120-1500, the molar ratio of formaldehyde to phenol being from 0À7 to 0À9. The composition may also contain up to 100% by weight, based on the weight of the red phosphorus, of an oxide of Cu, Zn, Ag, Fe, Sb, V, Sn, Ti or Mg, for stabilizing the red phosphorus against evolution of phosphine. The composition may be prepared by mixing components (a) and (b) in the cold and then heating the mixture so that the polycondensate melts and coats the phosphorus particles. The polycondensates can also be deposited on the phosphorus particles by the following encapsulation processes:-coacervation in the aqueous or interfacial phase, precipitation in an organic phase by addition of a non-solvent spray-drying, the use of a fluidized bed, interfacial polymerization or polymerization in situ, and vacuum or electrostatic deposition. The flameproofing composition can be used to flameproof thermoplastic, thermosetting and elastomeric polymers, e.g. polyolefins, polyvinyl compounds, polystyrenes and acrylonitrilebutadiene-styrene copolymers, polyamides, saturated polyesters, polyacetals, polyacrylics, cellulosic esters, polyurethanes, polyamideimides, phenolic resins, aminoplasts, unsaturated polyesters, polyepoxides, polyimides, natural or synthetic rubbers, and silicones. Generally 0À2 to 20% wt. of the flameproofing composition, based on the weight of the plastics, is added to the composition to be flameproofed. The plastics may contain reinforcing fillers, e.g. glass fibres, or inert fillers, e.g. kaolin or talc. In the Examples flameproofed compositions are prepared by mixing red phosphorus particles coated with a phenol-formaldehyde novolac resin, copper oxide powder, polyalkylene glycol laurate and either (1) poly- (hexamethylene adipamide) filled with glass fibres, or (2) poly(butyleneglycol terephthalate), or (3) polypropylene, or (4) high impact polystyrene containing 8% wt. of poly butadiene and then heat-extruding the mixture into a strand.
Patent GB-1329053-A (GB)
Title: Fault finding apparatus
IPC: G01R31/28
Filed: 1971-04-19
Abstract: 1329053 Testing electrical circuits SIEMENS AG 19 April 1971 [13 March 1970] 23726/71 Heading G1U In apparatus for testing an electronic circuit arrangement, e.g. the central unit of a data processor, information from the arrangement under test is read into a store where, normally, it is retained for only a short time before being destroyed; if however, a fault is detected a control signal is produced which is effective to prevent further information being read into the store and to preserve the existing store contents. In Fig.2 information (E2) from the arrangement under test is continuously read into the input of a shift register or acoustical delay line AV constituting the store, and after passing down the register or line the information is normally lost at the other end. When a gate circuit GS detects a fault, however, after a selectable delay (VZ1-N) a flip flop FF2 is set to block an AND gate GU2, thus preventing new information reaching the store, and also to open AND gate GU1, after a further delay (TV), so that the information already in the store is recirculated. Information is read out of the store by supplying clock pulses to the resetting input of a further flip flop FF3. In another embodiment Fig.1 (not shown) the information is stored on a magnetic drum (TSP), the information normally being erased after a short time when later information is written over it. A plurality of signals from outputs and inputs of the arrangement under test may be stored simultaneously using respective delay lines, shift registers or drum tracks. The store contents may be indicated on an oscillograph or, in the case of a shift register, by lamps.
Patent GB-868778-A (GB)
Title: Regulating device comprising transistors for constant voltage control of an alternating current generator
IPC: H02P9/30
Filed: 1959-07-10
Abstract: 868,778. Automatic voltage control systems. HAGGLUND & SONER A.B. July 10, 1959 [Aug. 4, 1958], No. 23727/59. Class 38 (4). In an automatic voltage control system for an alternating current generator, the current through an exciting winding of the alternator is controlled by a series-connected switched transistor responsive to the output of a voltage comparing device comparing a constant reference voltage with a voltage, dependent on the alternator voltage, having a saw-tooth waveform. As shown, an alternator Gland an exciter G2 are constructed with a common armature and have common field windings F1, F2. The output voltage of the alternator G1, through a transformer Tf1 and full-wave rectifier V1-V4, energizes a bridge network having voltage dependent resistors Rsl, Rs2 in opposing arms. The bridge out-of-balance voltage has an asymmetric sinusoidal waveform, the negative part of which is clipped by a rectifier V5. The resultant positive-going pulses, occurring at the alternator frequency, are shaped to a saw-tooth waveform by a filter R6, C2. A reference voltage, derived by smoothing the voltage across the voltage dependent resistor Rs1 by a filter R4, C1, is applied as emitter-base bias to a transistor Ts1 which through a transistor Ts2 renders a transistor Ts3 conductive. When the voltage across capacitor C2 exceeds the voltage drop across a diode V6 the bias of transistor Ts1 is varied so as to render the transistor Ts3 non- conductive. The field winding F1 is supplied from the exciter G2 via the transistor Ts3, the relationship between the durations of conduction and non-conduction being such as to tend to maintain the alternator voltage constant. A rectifier V7 passes the inductive current of the field F1 when the transistor Ts3 is non-conductive. A transformer Tf2 applies negative feed-back to the input of the transistor Ts1 to reduce the switching response time. The alternator output voltage is set by a potentiometer R1.
Patent GB-1488731-A (GB)
Title: Integrated circuit devices and to their manufacture
IPC: H01L29/08
Filed: 1976-05-07
Abstract: 1488731 Semi-conductor devices FERRANTI Ltd 7 May 1976 [31 May 1975] 23737/75 Heading H1K In an integrated circuit comprising a bipolar transistor and a resistor 17 connected to a buried highly doped collector region 12 of a second conductivity type at the interface between a first conductivity type substrate 11 and the same conductivity type epitaxial layer 10, the buried resistor 17 is contiguous with the buried collector region 12, and contact region 18 to the resistor is spaced from the buried collector region 12. Preferably, the buried layer forming the resistor 17 has a higher sheet resistivity value than the buried collector region 12, in which case the buried regions are formed in two different processing steps involving diffusion and/or ion implantation. A collector isolation region 14 for the transistor which is extending to the buried collector region 12, and the contact region 18 are either provided in a single ion-implantation step, preferably followed by redistribution of the doped impurity or in separate diffusion steps. In other embodiments, the isolation region 14 does not form a part of the collector of the bipular transistor and an insulation region either of silicon oxide in a V-section groove or formed by a V-section groove coated with silicon oxide and filled with polycrystalline silicon is provided in the epitaxial layer away from the buried layers.