baber/WOPTO huggingface dataset:
Patent GB-1103260-A (GB)
Title: Improvements in or relating to prestressed concrete pressure vessels
Inventor: HOSEGOOD SAMUEL BRITTAN
IPC: G21C1/00
Filed: 1965-12-06
Abstract: 1,103,260. Reactor pressure vessels. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 1 Dec., 1966 [6 Dec., 1965], No. 51721/65. Heading G6C. A nuclear reactor prestressed concrete cylindrical pressure vessel 1, has end walls, 3 and 4 which are stressed by cables 8a wound peripherally round the circumference. The side walls 2 accommodate holes 11 for heat exchangers. The interior is lined by steel plate 14. Axial thrusts are opposed by the longitudinal prestressing cables 18, 18a and the side  walls are stressed by externally wound cable 9.
Patent GB-1400797-A (GB)
Title: Hydrocarbon conversion catalyst and its use
IPC: B01J29/24
Filed: 1972-11-09
Abstract: 1400797 Alkylation catalyst UNIVERSAL OIL PRODUCTS CO 9 Nov 1972 [10 Nov 1971] 51738/72 Addition to 1334928 Heading B1E [Also in Division C5] An alkylation catalyst comprises a zeolite impregnated with one or more of Cu, Ag, Au and Zr, present as metals, wherein the zeolite has a silica to alumina mole ratio of at least 40:1 and has been prepared by acid-extraction of alumina from a mordenite of silica to alumina mole ratio of 12:1 to 30:1 by use of on at least normal aqueous solution of hydrochloric, sulphuric or nitric acids, the mordenite itself having been formed by maintaining at 25-300‹ C a reaction mixture comprising 1 molar part of Al 2 O 3 , from 12 to 30 molar parts of SiO 2  as cogel for the alumina, from 1.5 to 2.5 molar parts of Na 2 O and water present in the reaction mixture in an amount of from 60 to 200 moles per mole of Na 2 O. Suitably, the catalyst contains 0.01- 10% wt of the metal and the zeolite has a silica to alumina mole ratio of from 50:1 to 100:1.
Patent GB-1270778-A (GB)
Title: Agents for the control of animal ectoparasites
Inventor: ENDERS EDGAR
IPC: C07D211/72
Filed: 1970-11-03
Abstract: 1,270,778. Pesticides containing arylimino lactams. FARBENFABRIKEN BAYER A.G. 3 Nov., 1970 [3 Nov., 1969], No. 52213/70. Heading ASE. [Also in Division C2] A composition for the control of animal ectoparasites comprises a 2-arylimino-1-alkyl or alkenyl lactams of the formula in which one of X and Y is halogen and the other is halogen or C 1-4  alkyl, R is C 1-6  alkyl or alkenyl, and n is 4 or 5.
Patent GB-1528800-A (GB)
Title: Laundry washing machine
IPC: D06F35/00
Filed: 1975-12-29
Abstract: 1528800 Washing machines THOMSONBRANDT 29 Dec 1975 [31 Dec 1974] 53045/75 Heading D1A In a washing machine having a tank with a draining pump and a horizontal rotating laundry drum a programme-controlled drying operation comprises the following phases:- (1) as the water supply is reduced from M to N the correspondingly reduced resistance on the drum allows the speed of the latter to rise from washing speed (approximately 50 r.p.m. at A) to approximately 90 r.p.m. at B, the drive motor suitably being supplied at constant power; (2) the speed is held constant at about 90 r.p.m. until C while the tank is almost completely drained; (3) the speed of the drum is progressively increased by the motor to approximately 120 r.p.m. at D; and (4) the lightening of the laundry as water is extracted allows the drum speed to rise to approximately 170 r.p.m. at E, the speed being kept at this level for a length of time. These low-speed phases provide for good distribution of the laundry and balancing of the drum and they may be followed by highspeed phases 6 and 7 at approximately 450 and 800 r.p.m., respectively, as well as a loosening phase 9 at 50 r.p.m. or less. Phases 2, 3, 4, 5 respectively are no more than 180, 15, 60 and 30 seconds, and phases 6 to 9 are adjustable in length.
Patent GB-1277470-A (GB)
Title: Rotary positive-displacement vacuum pump
IPC: F04C23/02
Filed: 1969-11-03
Abstract: 1277470 Rotary positive-displacement pumps PRECISION SCIENTIFIC CO 3 Nov 1969 {29 Nov 1968] 53729/69 Heading F1F A two-stage oil-sealed vacuum-pump 20 on a base 22 has a hollow rotor 160 coupled to an electric motor 64 by a shaft 66 and carrying two pairs of outwardly-sliding vanes 184 that engage with discs 72, 76, respectively, the discs together with plates 70, 74, 78 defining pumping chambers 100, 140. A space 30 and a cavity 36 are charged with oil up to a level L through an opening 46. Between inlet and outlet pipe-couplings 62, 60 the gas flows (due to the action of the vanes) through a chamber 42, a passageway 44, aligned openings in the plates and discs 70 to 76, a cavity 152, the chamber 140, a cavity 154, the interior of the rotor, a cavity 96, the chamber 100, a cavity 98, an opening in the plate 72, an exhaust port in the plate 74 controlled by a flexible valve-plate 220, and a cavity 58. A slit in the valve-plate, Fig. 1 (not shown), permits oil to leak at a controlled rate into the chamber 100. A guard 270 minimizes splashing of the oil. Spring-loaded graphite-rings 206 and rubber sleeves 211 prevent oil in the cavity 36 leaking into the chamber 100 and past a bearing bush 208. Atmospheric air may be allowed to enter the cavity 98 for ballasting purposes through a valve (51), Fig. 2 (not shown), a port 54 and an opening (99), Fig. 5 (not shown), in the plate 70. A pin 200 connects the rotor to the shaft. An annular groove and transverse bore in the rotor, Fig. 11 (not shown), facilitate escape of gas dissolved in oil adhering to the rotor. Removal of a housing 28 and the plate 78 permits replacement of the vanes.
Patent GB-1281395-A (GB)
Title: Improvements in or relating to variable venturi carburettor
Inventor: PITRA JIRI
IPC: F02M17/09
Filed: 1969-11-04
Abstract: 1281395 Spray carburetters MOTOR NARODNI PODNIK 4 Nov 1969 [27 Nov 1968] 53943/69 Heading F1B A variable Venturi carburetter has a pivotable flap 3, Fig. 1 formed at its free end as a flat blade 7 which co-operates with a bridge in the air passage to form the Venturi, the flap shaft 4 being connected to a spring-biased diaphragm to effect flap movement in dependence on the pressure at the Venturi throat, the other end of the lever being connected to a needle 27, Fig. 4 controlling the fuel supply. The other end is also connected to a damping device 17. Diaphragm 33 Fig. 3 is subjected to the vacuum in the throat communicated through duct 37 to chamber 38 and to atmospheric pressure in chamber 52. Fuel from the float chamber passes through the jet orifice 28 Fig. 4, duct 30, Fig.1 and emulsion tube 9 to duct 8 at the Venturi throat. The relationship between the positions of the flap 3 and the needle 27 may be varied by altering the relative positions of levers 15 and 23 which are held frictionally by a device 39 rotatable by a captive screw (49), Fig.2 (not shown). (For Figures see next page)
Patent GB-1324547-A (GB)
Title: Helicopter lighting system and light units useful therein
IPC: B64D47/06
Filed: 1970-11-12
Abstract: 1324547 Helicopter lamps ISRAEL AIRCRAFT INDUSTRIES Ltd 12 Nov 1970 [28 Nov 1969] 53988/70 Heading F4R [Also in Division C4]  A lighting system for indicating to an observer the position and altitude of a helicopter comprises a first lamp attached to the tip of a rotor blade and a second lamp attached to the rotor at a position spaced inwardly from the tips of the blades. Preferably each blade carries a first lamp and a second lamp. The first lamp (Fig. 5) comprises a channel-shaped housing 20 closed by a transparent cover 26 and containing six self-luminous light sources 22 arranged in two rows of three and embedded in a resilient layer 24. A stainless steel nose block (28, Fig. 3, not shown) is attached to the housing in alignment with the leading edge of the blade to reduce wear, and the lower wall 21 of the housing is provided with an extension 21<SP>1</SP> to shield the light from the ground, the upper surface of the extension being polished to serve as a reflector. The lamp includes studs (30, 36, Fig. 4, not shown) which support weights (32, 38) to balance the rotor. The second lamp (Fig. 7) comprises a circular housing 54 closed by a transparent cover 60 and containing a circular array of self-luminous sources 56 disposed at an oblique angle to the axis of the lamp and embedded in a resilient layer 58. A dish-shaped reflector 62 directs the light laterally. The parts of the lamp are held together, and the lamp itself is secured to the rotor, by a bolt 50 which passes axially through the lamp and may also serve to secure the rotor blade to the rotor head assembly. Rotation of the lamp about the bolt is prevented by centering pins 64 which pass through openings in a washer 66 anchored to the bolt head by a wire 68. The sources 22, 56 consist of sealed glass tubes internally coated with a phospher and filled with tritium.
Patent GB-1203046-A (GB)
Title: Improvements in closed loop control systems
Inventor: TOEROEK VILMOS
IPC: G05B5/01
Filed: 1967-11-28
Abstract: 1,203,046. Automatic speed and current control. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov.28, 1967 [Nov.29, 1966], No.54022/67. Heading G3R. A closed loop control system comprises an error signal generating means, to generate an error signal, which is a function of the difference between input and output signals of the control system, an amplifier being arranged to sense the error signal, amplify this, and add the amplified signal to the original error signal, the amplifier comprising a means for limiting its output signal. A D.C. motor 1 is supplied through converter 2 having controller 4, the motor current being detected by transformer 5 associated with rectifier 6 and pulse transformer 7. The voltage across resistor 9 is supplied to amplifier 11 having a feedback network comprising resistors 111, 113, and capacitors 112, 114. The speed of the motor is detected by tachometer generator 12 which supplies a signal to an amplifier 14 which also receives a reference signal through resistor 15. The output voltage of the amplifier 14 represents a reference signal for the motor current and is applied to the input of the amplifier 11 whose output is connected to the controller 4. The voltage developed across the secondary winding 72 of the transformer 7 is proportional to the A. C. component of the motor current, a capacitor 17 being tuned to block the oscillations due to converter commulation, and to pass the signals representing the self-oscillation of the motor current. These signals are rectified, smoothed, and applied across a resistor 21. A Zener diode 24 breaks down when the voltage across the resistor 21 reaches a given value, so that current passes through bridge 22 having its A.C. terminals in the feedback network of the amplifier 11. The effective feedback impedance and gain of the amplifier 11 is thus reduced, so restricting the amplitude of self-oscillation to an acceptable level. A network comprising resistor 115, capacitor 116, and diodes 117 limits the rate-of-change of the converter direct voltage. In a further embodiment, the amplitude of selfoscillation is sensed directly across the resistor 111, two opposed Zener diodes in series with a capacitor being connected in parallel with a feedback resistor of the auxiliary amplifier. With increasing amplitude of self-oscillation, the impedance of the diodes decrease together with the gain of the amplifier 11. In this embodiment, the bridge 22 and associated components are dispensed with Fig.2 (not shown).
Patent GB-1067928-A (GB)
Title: Improvements in and relating to electrical contacts
IPC: H01R4/62
Filed: 1965-12-22
Abstract: 1067928 Switch contacts BROWN BOVERI & CO Ltd 22 Dec 1965 [24 Dec 1964] 54295/65 Heading H2B In order to facilitate spot welding of sheet silver on to aluminium or aluminium alloy the sheet is cut into strips comprising a series of small pieces inter-connected by a narrow web between adjacent pieces. A spot weld is made on each piece of sheet and the narrow inter-connecting webs substantially prevent the undesired flow of  welding current through an adjacent weld. The pieces may be rectangular, Fig. 1 (not shown) or circular, Fig. 4 (not shown) and the strip can be readily shaped to a desired configuration; for example, for welding to the end face of a tubular aluminium base element, Fig.3 (not shown).
Patent GB-1459575-A (GB)
Title: Method and apparatus for manufacturing composite plane panels forming prefabricated construction elements for the partitions and walls of a building
IPC: B28B1/16
Filed: 1974-12-17
Abstract: 1459575 Making composite panels TRAMEX SA 17 Dec 1974 [17 May 1974] 54362/74 Heading B2E Composite panels for use as building walls and partitions are made by continuously casting onto an endless band a mixture of an ultimately strong and rigid material, such as concrete or plaster, with pellets of resilient cellular material such as expanded polystyrene to form a first layer, allowing this layer to set forming a superficial cellular structure having open cells in the top face of this layer, continuously casting onto this face a second layer, particularly of plaster, to form an appearance lining and after setting of this second layer, cutting the composite panels to length. A lower layer of appearance lining may be cast initially on the endless band and the said layer or after application thereto of a bond-promoting resin. Alternatively, a rough surface may be provided on the lower layer by scratching or scoring or by sprinkling thereon of dry plaster or sand, or a non-woven falbric may be placed on the top face of this layer. A protective plastics strip which has been relief-printed or embossed may be paid out onto the endless band prior to casting to protect the outer surface of the composite panel and to impart a raised decoration thereto on removal. Acrylic resin (as hardener) and cut glass fibres may be incorporated in both the lower and first layers. The first layer may be cast as a wide central band between two side bands which contain fewer polystyrene pellets than the material of the central stand Boxes or scoops may be used to level the layers and excess material is recycled. The superficial cellular structure is formed either by scraping with a knife blade followed by blowing with compressed air or gas to remove the exposed pellets or, when polystyrene pellets are used, by a sublimation technique either by heating to 80C or by spreading or spraying of a resin which causes the sublimation of expanded polystyrene. Apparatus for making the panels comprises an endless belt 1 of stainless steel, two endless side bands 5 (Fig. 6) arranged vertically on either side of the horizontal belt, first and second casting devices B and C for forming said first and second layers, the second device being located far enough from the first to allow setting of the cast first layer, optionally a third casting device A for forming the lower appearance lining, means located directly before the second casting device for forming the superficial cellular structure and comprising a blade 40 and blowing means 43, optionally a Hertzian microwave furnace 50, and cutting means 51 comprising an abrasive thread or wire, a saw or a laser beam.
Patent GB-1152520-A (GB)
Title: Standpipe coupling means.
Inventor: JEROME MAURICE WILLIAM
IPC: F16L37/40
Filed: 1966-12-06
Abstract: 1,152,520. Standpipe couplings. WRIGHT RAIN Ltd. 4 March, 1968 [6 Dec., 1966], No. 54445/66. Heading F2G. In order to couple a standpipe 3 to the end of a branch pipe 5 of an irrigation pipeline 16 which is buried in the ground below ploughing depth, a coupling arrangement is provided which consists of a housing 21 projecting above and below an anchoring plate, e.g. in the form of a block of concrete 14, to which it is secured as by bolts 15, the housing comprising an upwardly facing socket 2 sealingly receiving the standpipe 3, a seal 7 being provided for this purpose, locking means for releasably securing the standpipe in the socket 2, a downwardlyfacing socket having a seal 12 for receiving the branch pipe 5, or alternatively a spigot for receiving a sealed socket on the end of the branch pipe 5, and a valve 11 which is normally closed by the pressure of water in the pipeline 16 but is opened by the lower end of the standpipe when the latter is inserted in the socket 2. In the embodiment of Fig. 2 shown, the locking means consists of a lever 22 which is acted on by a compression spring 25 to cause a pair of jaws (not shown), which project through a slot in the housing 21, to grip the standpipe 3, in co-operation with fixed jaws (not shown) within the housing, as is described in Specification 1,104,664. In the embodiment of Fig. 1 (not shown), the locking means is a slotted plate (8) which is pivoted to the housing and through which the standpipe extends, a spring acting on the plate to cause it to grip the standpipe, as described in Specification 1,031,383.
Patent GB-1424257-A (GB)
Title: Manufacture of cellular concrete products
IPC: B28B11/14
Filed: 1973-11-27
Abstract: 1424257 Article engaging devices INTERNATIONAL SIPOREX AB 27 Nov 1973 [28 Nov 1972] 54848/73 Heading B8H [Also in Divisions B4-B5] A plurality of concrete blocks are moved relatively by pivoted arms. In a first embodiment, the horizontal arms 4 (Fig. 1) are attached to a beam 3 by flexible stays 7 and pivot about posts mounted in the beam, while being guided by rollers engaging the beam undersurface. Each arm 4 is pivoted by co-operation with a curved slot 13 (Fig. 3) in a slide 11 moved vertically by a double-acting piston and cylinder 9. The beam 3 is supported by carriages 2 running on rails 1. The concrete blocks are clamped between upper and lower arms 4. In a second embodiment, a wheeled carriage 22 (Fig. 5) supports lower arms 24 rigid with respective shafts 25, and each arm pivotally supports a beam 28. The beams 28 are constrained (by means not disclosed) to remain parallel and forwardly pointing. Similar, upper beams 32 are movable vertically by piston and cylinders 30, mounted on upper arms 29. Actuators 34 mounted on flexible stays 33 serve to pivot the upper and lower arms 24, 29 singly or in groups. Cutting of semiplastic concrete blocks supported by the arms 4, 24 is described (see Divisions B4-B5).
Patent GB-1478453-A (GB)
Title: Photocathodes
IPC: H01J1/34
Filed: 1971-11-29
Abstract: 1478453 Epitaxial growth on a substrate DEFENCE SECRETARY OF STATE FOR 29 Nov 1972 [29 Nov 1971] 55355/71 Heading BIS [Also in Division H1] A transmission photocathode comprises a crystalline substrate having an energy gap greater than the detector layer, an intermediate layer comprising (Ga 1-x Al x ) 1-y In y As, and an epitaxial p-type detector layer comprising Ga 1-y In y As wherein O < x # 1 and O < y < 1. Zn, Cd, Ge, or Si may be present as a p-type dopant in the intermediate layer to produce a potential barrier at the interface with the detector layer. The photocathode may include a second intermediate layer comprising (Ga 1-x Al x ) 1-z In z As where O # z < z. The photocathode may be used in a detector operable at wavelengths greater than 0.86 micrometers. An apparatus is described, Figure 3 (not shown), for depositing the layers on a gallium phosphide crystal substrate.
Patent GB-1533976-A (GB)
Title: Friction pad assemblies for sliding caliper disc brakes
IPC: F16D65/097
Filed: 1974-12-24
Abstract: 1533976 Brake pad assemblies GIRLING Ltd 23 Dec 1975 [24 Dec 1974] 55727/74 Heading F2E Pad retention is effected by a wire spring 8 attached to the backing plate 1 and having limbs extending in two directions from one or more central coils fitted over a pin permanently or detachably secured to an extension 4 of the backing plate. The free ends of the spring are bent about mutually perpendicular axes (Fig. 4c, not shown). Each pad of a sliding caliper brake may be provided with such a spring arranged so that the spring ends bear against the underside of the caliper to effect both pad retention and biasing of the caliper relative to the torque member (Figs. 5-7, not shown).
Patent GB-1484136-A (GB)
Title: Electric circuit arrangements
IPC: G06G7/20
Filed: 1974-12-02
Abstract: 1484136 Squaring circuits FERRANTI Ltd 2 Dec 1974 [1 Dec 1973] 55772/73 Heading G4G A circuit for generating an output signal whose average voltage is proportional to the square of an input signal comprises a relaxation oscillator 11 using a unijunction transistor 15 which generates a substantially linear sawtooth waveform voltage of frequency determined by resistor 23 and capacitor 24 the sawtooth voltage being taken through an emitter follower 12 to the emitter of another unijunction transistor 26 used as a comparator whose inputs are the emitter and the base connection 29, the base input receiving the input signal through a resistor 27. Transistor 26 only conducts when the sawtooth voltage exceeds the input voltage causing the voltage at 29 to follow a square wave pattern whose amplitude switches from the input voltage to a lower level, the width of the pulses being dependent on the difference between the input voltage and the peak of the sawtooth. It is shown that the average of the square wave voltage, as derived from a low pass filter 14 is proportional to the square of the input voltage and independent of the oscillator frequency. The amplitude of the sawtooth voltage must exceed the input voltage and periodic variations in the latter must be of substantially lower frequency than that of the oscillator.
Patent GB-1245781-A (GB)
Title: A method of and an apparatus for testing circuit assemblies of electrical components
IPC: G01R31/28
Filed: 1968-11-25
Abstract: 1,245,781. Electric couplings. ENGINS MATRA. 25 Nov., 1968 [19 Aug., 1968], No. 55837/68. Heading H2E. [Also in Division G1] Apparatus for making temporary connections to the ends of the components on a printed circuit-board 51 to be tested comprises a set of resiliently-mounted probes 32 which are driven by electric motor against one side of the board 51, deformation of the board being prevented by studs 33 which are driven against the other side of the board. The board 51 is carried on a frame (60, Fig. 8, not shown) which slides into a cavity in the testing apparatus, the motor being automatically started when a lid (57) of the cavity is closed.
Patent GB-1334884-A (GB)
Title: Aminoalcohols and their conversion to aminoketones
Filed: 1971-12-02
Abstract: 1334884 Aminoalcohols and ketones SUMITOMO CHEMICAL CO Ltd 2 Dec 1971 [9 Dec 1970 18 Dec 1970 9 March 1971] 56054/71 Heading C2C Aminoalcohols, and ketones are prepared by the following route and may be isolated in the form of a salt (R<SP>1</SP> = H, halogen, C 1-4  alkyl, C 1-3  alkoxy, CF 3 ; R<SP>2</SP> = H, halogen, C 1-3  alkoxy, NH 2 ; R<SP>3</SP> = H, alkyl, Ph, PhCH 2 ; R<SP>4</SP> = alkyl, cycloalkyl, Ph, halophenyl,CH(R<SP>6</SP>)(CH 2 ) m XPhR<SP>5</SP>;R<SP>5</SP> = H, halogen, C 1-4  alkyl, C 1-3  alkoxy, CF 3 ; R<SP>6</SP> = H, C 1-3  alkyl, Ph; X = O, S or direct link; m = 0-3; n = 0-4). The aminoalcohols and their salts are novel and are central and peripheral nervous system depressants, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1207624-A (GB)
Title: Improvements in or relating to marine fender devices
IPC: B63B59/02
Filed: 1967-12-09
Abstract: 1,207,624. Ships' fenders. HUSBANDS SHIPYARDS Ltd. 7 March, 1969 [9 Dec., 1967], No. 56108/67. Heading B7S. A ship's fender comprising a wheel 10, having a tyre 11, releasably mounted on a shaft 12 journalled to be revolvable about an upstanding axis, is provided with a brake 15 to control the rotation of the wheel. The brake is actuated by hydraulic means 22 remotely controllable by the person controlling the ship.