baber/WOPTO huggingface dataset:
Patent GB-2046390-A (GB)
Title: Fasteners for fastening workpieces together
IPC: F16B19/05
Filed: 1979-05-23
Abstract: A two-part fastener for fastening together workpieces 38, 40 whose combined thickness lies in a range of thicknesses, consists of a grooved pin 12 onto which a collar 42 is swaged by the tapered anvil 52 of a tool 50 which pulls the end 200 of the pin 12 and pushes the collar 42, all the locking grooves 18 being formed also as breakneck grooves and shaped so that breaking occurs at the groove aligned with the free end of the collar 42. The locking grooves 18 are radiused at bottom and asymmetric, so that an axial force is generated as the collar is swaged into the last groove 18. <IMAGE>
Patent GB-2051198-A (GB)
Title: Method of Constructing a Multi-storey Building
IPC: E04B1/38
Filed: 1979-06-19
Abstract: A method of constructing a multi- storey building comprises laying a foundation for the external walls of the building; laying a plurality of columns 4 around the foundation 1, the columns being supported by the foundation and extending over substantially the entire height of the building; and placing panels 5 between the adjacent pairs of columns 4 to form the external walls of the ground floor storey of the building. The higher storeys of the building are then constructed successively one upon another, each of the higher storeys being constructed by supporting a floor on the upper edges of the wall panels 5 of the storey immediately below, and by placing panels between the adjacent pairs of columns 4 to form the external walls of that storey. The uppermost storey of the building is covered by a roof which is supported on the upper edges of the wall panels of that storey. <IMAGE>
Patent GB-2038317-A (GB)
Title: Cyclic diacids & diesters their preparation and use as chromatographic standards
IPC: C07C61/40
Filed: 1979-10-23
Abstract: Novel diacids and diesters of Formula I wherein X is chloro, bromo, fluoro or trifluoromethyl, Y is chloro, bromo or fluoro, and R is hydrogen or C1 to 4 alkyl. The compounds may be prepared by a sequence of reactions from alkyl tiglate, and are useful as chromatographic reference standards for use in evaluation of the metabolic breakdown of pyrethroid insecticides. <IMAGE>
Patent GB-2063411-A (GB)
Title: Blind Fastener
IPC: F16B19/10
Filed: 1979-11-14
Abstract: A blind fastener has a thin metal barrel 16 and a plastics plug 18. The plug is deformed when pushed into the barrel accommodated in a hole in a workpiece W, W1, and expands the barrel at the blind side by recovery from deformation. It also expands beyond the end of the barrel to further resist withdrawal. <IMAGE>
Patent GB-2044274-A (GB)
Title: Polyparaffinsiloxanes and biomedical articles formed therefrom
IPC: A61M1/16
Filed: 1979-11-22
Abstract: Contact lenses and other biomedical shaped articles with advantageous properties are made from polymers and copolymers of monomeric polyparaffinsiloxanes end-capped with activated unsaturated groups. The poly(organoparaffinsiloxane) polymers and copolymers are obtained by polymerising monomers represented by the following formula:   <IMAGE> wherein A is an activated unsaturated group; R is a divalent hydrocarbon radical having from 1 to about 22 carbon atoms; R1, R2, R3 and R4 can be the same or different and are selected from a monovalent hydrocarbon radical having from 1 to about 12 carbon atoms and a halogen substituted monovalent hydrocarbon radical having from 1 to about 12 carbon atoms; R5 and R6 can be the same or different and are selected from hydrogen, a hydrocarbon radical containing from 1 to about 12 carbon atoms, a carboxylic acid group, a carboxylic acid ester group represented by the formula   <IMAGE> wherein R7 is selected from a hydrocarbon group containing from 1 to about 12 carbon atoms and a carboxylic acid amide represented by the formula   <IMAGE> wherein R8 and R9 can be the same or different and each is selected from hydrogen and a hydrocarbon group containing from 1 to about 12 carbon atoms; x is 2 or greater and m is 1 or greater.
Patent GB-2070039-A (GB)
Title: Semi-conducting N4-chelate Electrode Coating
IPC: C25B11/04
Filed: 1980-02-25
Abstract: A semi-conducting, stable polychelate coating is manufactured in situ on a conducting valve metal electrode substrate providing metal coordination centres, by carrying out a controlled chelating reaction and thermal treatment on the substrate surface with a predetermined specific amount of tetranitrile compound per unit substrate area. The temperature and duration as well as this specific amount are selected from given ranges to form a uniform polychelate coating bonded to the substrate surface.
Patent GB-2049946-A (GB)
Title: Transducer calibration device
IPC: G01F25/00
Filed: 1980-03-06
Abstract: The output of a transducer 28 for sensing the position of a shuttle of a fluid metering device is passed to an electrical circuit 29 for supply to a fuel control network. In order to check the output of the transducer the output of the circuit 29 is sampled in a sample circuit 30 when the movement of the shuttle associated with the transducer is a known value. The signal from the sample circuit 30 is compared in a comparator 31 with a reference signal. Any difference is passed to circuit 33 which calculates a new gain value for a variable gain amplifier in the circuit 29. The value of the gain is retained in a holding circuit 34 and supplied to the amplifier until further adjustment is required. <IMAGE>
Patent GB-2075108-A (GB)
Title: Cylinder lock and key
IPC: E05B35/00
Filed: 1980-04-29
Abstract: A cylinder lock has a key with a head 41 and a spiral shank 42 extending therefrom, the shank having a series of longitudinal slots 431, 432 etc for cooperation with complementary wards 231, 232 etc of varying diameter on the inside of a rotatable cylinder. As shown, bush 30 in anchored in the lock body by a bar 15 and rotatably supports skirt 24 of the cylinder. When locked, ball 35 is urged by spring 36 into aligned holes in the bush 30 and skirt 24 to prevent rotation. The bush 30 provides keyway 32 into which the shank 24 must be screwed. When properly inverted the grooves 431 etc are aligned with wards 231 and pushing the key engages them. A portion of shank 24 engages ball 35 to force it far enough out to allow the cylinder to be rotated by the key, thus presenting flats 26 to locking balls 13. This allows them to move inwardly and so release shackle 12. <IMAGE>
Patent GB-2052886-A (GB)
Title: A linear motor
IPC: H01F7/122
Filed: 1980-06-02
Abstract: The permanent-magnet armature of a reciprocating linear motor is returned to its starting position by magnetic biasing means when the field coil is deenergized. One linear motor utilizes the magnetic attraction between a washer or washers (62, 64) formed from a ferrous material, e.g., steel, and a magnetic pole or poles of an armature (26) for automatically returning the armature to is original position (as shown in Fig. 1) upon the deenergization of a field coil (54 or 56). Each washer (62 or 64) is located in alignment with and in surrounding relation to one of the effective poles (40 or 44) of the armature (26) when the field coil is not energized. The stroke of the armature (26) is limited to a distance (Y) which ensures that at the end of the stroke the one effective pole (40 or 44) will be located closer to its respective washer (62 or 64) than any other effective pole (44, 70 or 40). Another linear motor, Fig. 12, 13 (not shown), uses a fixed bias magnet and the field coil affects the balance between forces on the armature due to a coiled spring on one side and to the magnetic repulsion, between like poles of the fixed magnet and the armature magnet, on the other side. Either of these linear motors, in their various embodiments, may be incorporated into a shutter control mechanism for a photographic camera, Figs. 7, 8 (not shown), wherein the motor armature is connected to an electromagnet (74'), the motor and electromagnet being energised together periodically to grip and advance stepwise a rod (78') so that shutter blades (212, 214) are stepped open until the proper exposure is reached. <IMAGE>
Patent GB-2057533-A (GB)
Title: Oil Displacement Enhanced by Lyothropic Liquid Crystals in Highly Saline Media
IPC: C09K8/584
Filed: 1980-06-10
Abstract: Oil is recovered from an oil- bearing formation by injecting into the formation a liquid to displace oil, driving the liquid through the formation and recovering the displaced oil. The liquid comprises a lamellar liquid crystal which exhibits decreasing viscosities at increasing shear rates and contains   (a) 0.5 to 10 vol.% of surfactant of balanced hydrophiliclipophilic character,   (b) 0.1 to 20 vol.% of an oil, and (c) brine containing from 5 to 30 wt.% of inorganic salts having sodium chloride as the major component and salts of divalent metals as minor components. o
Patent GB-2052980-A (GB)
Title: Pharmaceutical composition for oral administration comprising methoxsalen
IPC: A61Q17/04
Filed: 1980-06-23
Abstract: Solutions of 8-methoxyfuro- (3',2': 6,7)-coumarin in a polyethylene glycol or an ether or ester thereof, a derivative of 3-dioxolane; an alkylene glycol; a pharmaceutically acceptable ethereal oil; an ester or partial ester of a C2 to C30 fatty acid with a 2- to 8- valent alcohol or with a polyglyceride; or a dialkyl amide having 3 to 6 carbon atoms; or dimethyl sulphoxide; or a mixture thereof give more rapid onset of blood level maxima. Such solutions have utility in the treatment of psoriasis by photochemotherapy.
Patent GB-2056792-A (GB)
Title: Control of electrical devices, particularly fires
IPC: H01R13/713
Filed: 1980-06-30
Abstract: The unit 1 plugs into an electric socket via the pins 10, and a radiant fire is plugged into the socket 12. The power output of socket 12 is continuously variable by means of a switch unit 14, which automatically makes and breaks an electrical contact. The ratio of times spent in "make" and "break" states, and hence the mean power output of the socket 10, is variable by means of control 16. The switch unit 14 may employ a bimetallic strip heated by current through the unit. <IMAGE>
Patent GB-2058153-A (GB)
Title: Warp knitting machine
IPC: D04B35/30
Filed: 1980-08-27
Abstract: A warp knitting machine, more particularly a stitch-bonding machine, has provision for keeping equal spacings between the knitting implements (sliding latch needles, closing wires, thread guides etc.) carried by respective bars 2, 3, 4, 5, 6 and 7, by compensating for the thermal expansion of the bars caused by different thermal influences. To this end electrical heating elements 14 to 19 and temperature measuring sensors 21, 23, 24, 26, 27 and 28 are provided in the respective bars which sensors form measuring bridges with respective desired value controllers. These control bridges are connected to the respective heating conductors via operational amplifiers, output stages and relays. <IMAGE>
Patent GB-2084635-A (GB)
Title: Roadway barriers
IPC: E01F13/02
Filed: 1980-10-03
Abstract: A portable barrier comprises self-standing supports 1 supporting removable bars 2. The support 1 has a generally open triangular frame comprising a base 3 and upwardly angled legs 4 which at their apex have slots 6,7 for the bars 2. At least the base of the support is hollow so that it can be filled with ballast such as sand or water. The ballast can be poured in through the slots 6,7 or through a filler hole (not shown) in the base. The bars may also be hollow. The supports and bars are made from plastics such as p.v.c. The open central portion 5 of the support increases its resistance to wind. <IMAGE>
Patent GB-2065234-A (GB)
Title: Turbine stator vane tension control
IPC: F01D25/16
Filed: 1980-10-21
Abstract: A turbine suitable for a gas turbine engine is provided with a bearing support member (19) which is interconnected with the turbine casing (15) by means of an annular array of aerofoil guide vanes (25). The whole assembly of support member (19) and aerofoil guide vanes (25) is maintained in a state of tension. The degree of tension in the assembly is controlled e.g. by controlling flow through valve 50 to control temperature, so as to be substantially constant throughout the normal operating cycle of the turbine. <IMAGE>
Patent GB-2066813-A (GB)
Title: Liquid Polyisocyanate Compositions
IPC: C08G18/80
Filed: 1980-11-28
Abstract: A liquid polyisocyanate composition which is stable to storage at low temperatures is prepared by reacting one equivalent proportion of a polymethylene polyphenyl polyisocyanate composition consisting essentially of diphenylmethane diisocyanate and polymethylene polyphenyl polyisocyanates of functionality greater than two, the diphenylmethane diisocyanate content of the composition being from 10 to 90% on a weight basis, with from 0.01 to 0.4 equivalent proportions of a monohydric alcohol of the formula:  A-OH wherein A represents an alkyl radical containing from 9 to 16 carbon atoms or a radical of the formula:   <IMAGE> wherein R represents a C1-12 alkyl group, R<1> represents hydrogen or C1-3 alkyl group and x is an integer of from 1 to 58, the reaction being performed at a temperature of from 100 to 250 DEG C and in the presence of a catalyst for the NCO/0H reaction.
Patent GB-2074960-A (GB)
Title: Track tensioning apparatus
IPC: B62D55/30
Filed: 1979-12-03
Abstract: A continuous track assembly (12) has a frame (16) and first and second elements (18, 20) pivotally connected to the frame (16). Each element (18, 20) has a rotatable wheel (22, 24) about which a track (30) is positioned. Either wheel (22, 24) can be rotated when desired by power and driving apparatus (36, 44) in an associated vehicle (10) to drive the track (30). Tension in the track (30) is maintained at a preselected level by apparatus (50) which moves the first and second elements (18, 20) relative to one another to position the wheels (22, 24) against the track (30). The wheels (22, 24) are freely pivotally movable to enable the track assembly (12) to readily adapt to its environment and maximize tractive effort. Maintaining desired track tension substantially overcomes problems associated with a track which is too loose or tight which can result in slipping or damage to the track assembly (12).
Patent GB-2075787-A (GB)
Title: Measuring velocity by doppler shift of laser radiation
IPC: G01S7/4911
Filed: 1981-04-07
Abstract: A laser doppler velocity measuring system in which a CO2 laser 4 illuminates a volume 2 of interest in the atmosphere, and laser radiation reflected off particles in this volume 2 is mixed on a detector 11 with a local oscillator signal direct from the laser 4, is characterised in that the laser frequency is locked to a desired frequency, e.g. the P20 line, by a feedback signal derived via a highly selective etalon filter 14, whereby the laser cavity is adjusted to give maximum local oscillator signal on the detector 11, which corresponds to the wanted frequency. <IMAGE>
Patent GB-2080476-A (GB)
Title: Improvements relating to mending of structural members
IPC: F16L55/175
Filed: 1980-07-22
Abstract: Apparatus for use in mending a fracture/perforated underwater structural member in the form of a pipe, typically a gas or liquid bearing pipeline, comprises a two-part housing having hinged semi-cylindrical shells (10, 12) with means for securing them as an annulus around the pipe and means for pumping therein under pressure in fluid form, a casting compound. In use, a sleeve of an epoxy resin is cast around the damaged section of the pipe, within the housing, and is chemically bonded to the pipe. The resin is introduced through port (32) whilst water is expelled through outlet (28). The securing means may be ring nuts (26), snap action catches or quick release couplings. <IMAGE>
Patent GB-2103894-A (GB)
Title: Improvements in or relating to light flasher units
Inventor: BORLEY RICHARD
IPC: H05B39/09
Filed: 1981-08-07
Abstract: A light flasher unit for use with a plurality of light bulbs connected in series and each mounted in a respective bulb holder, has an electronic switch 2, means 4, 5, 6, 7 for cyclically switching on and off said electronic switch, and means whereby said light flasher unit may be mounted in a light bulb holder with said electronic switch connected in series with the remaining light bulbs. The unit is intended to be connected in circuit in place of one bulb of a set of Christmas tree lights, and for that purpose its terminals 1 are connected to terminals of a lamp bayonet (not shown) which mates with one of the bulb holders. <IMAGE>
Patent GB-2082005-A (GB)
Title: Block redundancy for memory array
IPC: G11C11/401
Filed: 1980-05-22
Abstract: Block redundancy is utilized to improve yield and lower die cost for an electrically programmable read only memory (EPROM). The EPROM is organized 8Kx8 with four primary memory blocks on each side of a central row decoder. Each block includes an array of memory cells, column select, column decode, sense amp, data buffer and other overhead circuitry. One block of redundant circuitry is also provided for each set of four blocks and includes a redundant memory matrix, a redundant column decoder, a redundant column select, a redundant sense amp and a redundant data buffer. Incorporated within each primary memory block is a multiplex logic circuit which is independently programmable to selectively disconnect the associated primary memory block and substitute the redundant memory block, including the redundant column decoder, column select, sense amp and data buffer. Each multiplex logic circuit includes a polysilicon fuse which is permanently programmable from a closed to an open circuit condition by applying a high voltage to the external data bit terminal which corresponds with the defective memory block cells. According to this arrangement, for each group of blocks, one out of four primary memory arrays including the associated column select, column decoder, sense amp and data buffer, may be replaced during wafer testing and after encapsulation.
Patent GB-2091935-A (GB)
Title: A gas laser device
IPC: H01S3/036
Filed: 1981-12-16
Abstract: A gas laser device includes a laser cavity (4), a vacuum chamber (10) which communicates directly or through a cock (16) with the laser cavity and is coated on the inside with a gas-fixing substance (14) and an active gas tank (17) which communicates with the enclosure (4) via a controllable cock (20). When the laser is to be operated the cock(s) is (are) opened and the vacuum draws active gas through the laser cavity. The arrangement is such that the vacuum is maintained without renewal over long periods of storage of the laser device. <IMAGE>
Patent GB-2113591-A (GB)
Title: Method of flash butt welding
Inventor: KUCHUK-YATSENKO SERGEI IVANOVI
IPC: B23K11/24
Filed: 1981-12-16
Abstract: In the course of flash butt welding of two parts these are caused to continuously approach each other and the ends of the parts are fused by an alternating current, and concurrently an oscillatory motion along the direction of approach is imparted to at least one of the parts, whereby additional relative movements of the parts being welded together towards and away from each other are accomplished, with the result that the spark gap and the resistance of contacts between the parts are caused to vary. When the resistance across the contacts exceeds a predetermined value, the welding voltage is reduced to within the range of 0.7 to 0 of its working value. The voltage may, alternatively, be reduced to within said range during the stage of a relative movement of the parts away from each other in a time interval of not less than 1/8 of the period of the oscillatory motion from the beginning of said away relative movement and restored during the stage of a relative movement of the parts towards each other in a time interval of not more than 1/8 of the period of the oscillatory motion from the beginning of said towards relative movement. Welding of rods, rails and pipes is referred to. <IMAGE>
Patent GB-2098264-A (GB)
Title: Method and apparatus for applying mortar or concrete
IPC: B28B19/00
Filed: 1982-03-02
Abstract: One of the ingredients of green mortar or concrete are supplied to a rotary disc 18 through a central pipe 13 by a pump or low pressure air and the other ingredient is supplied to the disc 18 from a hopper 11 by screw conveyor 19. These ingredients are mixed together on the disc 18 and then projected by centrifugal force. Since the green mortar or concrete is projected by centrifugal force instead of pressurized air, quantities of dust and rebound formed at a projected surface are small. <IMAGE>
Patent GB-2117580-A (GB)
Title: Electronic commutation for direct current electric motors
Inventor: PARKER LOUIS W
IPC: H02P6/20
Filed: 1982-03-23
Abstract: A DC motor has interconnected stator coils (21-36) and SCR's (61-76) responsive to forced commutation below a particular rpm and self-commutation above said rpm which selectively conduct current into and out of the junctions of the coils. This produces stator poles which are angularly displaced from the poles (20) of the rotor (36) and which shift in position as the rotor rotates. Trigger assemblies (101-108) are provided for the SCR's, each trigger assembly comprising a pick-up coil (110) forming a portion of a frequency selective circuit whose resonance frequency varies in dependence on the position of a rotating magnetic element (109) coupled to the rotor of the motor. A sine wave oscillator (100) is coupled to the frequency selective circuits, the oscillator being operative to produce either of two different output frequencies, and an electronic switch (222) responsive to the rotor speed selectively changes the output frequency of the oscillator. One of these frequencies advance SCR trigger timing for reliable starting and very low speed operation. The other frequency retards SCR trigger timing for most efficient motor running at moderate and high speeds. <IMAGE>
Patent GB-2095638-A (GB)
Title: Conveying and cutting device
IPC: A01D90/04
Filed: 1982-03-25
Abstract: A device for feeding and cutting stalky material into the load space of a vehicle comprises a drum conveyor and a plurality of cutting knives within a conveying passage adjacent the drum. The drum is divided into a series of sections spaced along its axis each section of the drum conveying pivoted conveyor elements (9) actuated by follower levers bearing on a cam disc and interconnected by tension spring. The cutting knives (14) are biassed into the passage by a spring (18) biassed pivoted levers (17) connected to a pivoted support (15) for the knives. The levers may be rotated to an over-centre position at which the spring holds the knives out of action. <IMAGE>
Patent GB-2099354-A (GB)
Title: Hammers
IPC: B25D1/02
Filed: 1982-05-28
Abstract: A slag chipping hammer, used to chip away fused slag resulting from the welding together of two metal components, has each of the ends of its head (11) provided with an axial recess in the form of a tapped socket (12) securely accommodating a threaded shank (15) of material proof against the conducting of sound and embedding the tail end of a chipping tool. A series of chipping tools are provided to be used, one at a time, in each socket. Each tool bit is in the form of one or more pins (18), the heads of which are blunt or sloped. A metal washer abuts the inner end or ends of the pin or pins respectively. <IMAGE>