baber/WOPTO huggingface dataset:
Patent GB-1337070-A (GB)
Title: Hydraulic reciprocating motors and pumps
IPC: F04B1/053
Filed: 1971-12-29
Abstract: 1337070 Reciprocating rotors or pumps SHIMADZU SEISAKUSHO Ltd 29 Dec 1971 [30 Dec 1970] 60440/71 Heading F1A A hydraulic motor or pump comprises a cylinder block 17 mounted on an eccentric 15 and having radial pistons 30 slidably engaging flat casing surfaces 31, the eccentric 15 and shaft 11 being rotatable and the casing 14 fixed, or vice versa, and the pistons being hydrostatically balanced by working liquid supplied to piston recesses 41 via passages 42. Oscillation of the cylinder block is permitted by pins 50 ceoperating with recesses 51. Liquid is distributed through ports 18, 19 in the eccentric and passages 63, 64 and grooves 65, 66 in shaft 11. The pistons have sealing rings 36 and may be spring- loaded, as shown. Leakage in the casing interior passes out through passages 73, 74 which also may be used for pressurizing the casing interior to move the pistons into their cylinders for idling of the motor or pump. The eccentric and cylinder block bore may be frusto-conical to improve sealing and the block may be spring biased on to the eccentric, the axial load on the shaft being hydraulically balanced Fig. 8 (not shown). Hydrostatic balancing of the block on the eccentric also is provided by suitable dimensioning of the parts.
Patent GB-1288294-A (GB)
IPC: H03K17/79
Filed: 1969-12-11
Abstract: 1288294 Electroluminescence SHARP KK 11 Dec 1969 [11 Dec 1968 18 Jan 1969] 60547/69 Heading C4S [Also in Divisions G1 H1 and H3] A PNPN diode has a negative resistance characteristic and emits from its outer junctions infra-red radiation the intensity of which is proportional to current. An exemplary device is made by recrystallizing from a melt of gallium arsenide containing 10<SP>19</SP>-10<SP>20</SP> atoms/cc. of silicon on the surface of a monocrystalline N-type gallium arsenide body doped with 6 Î 10<SP>17</SP> atoms/cc. of silicon by cooling from 960 to 958 C. at 0À2 C./minute to deposit epitaxially a 5 Á P-type layer, from 958 to 954 C. at 10 C./minute to form a 5Á N-type layer and then at 0À2 C./minute to form a P layer 150- 180 Á thick. The diode is used in various oscillator circuits.
Patent GB-1268409-A (GB)
Title: Servo system having a monitor and trip level test means
IPC: G05B23/02
Filed: 1969-12-17
Abstract: 1,268,409. Servosystem test. BENDIX CORP. Dec.17, 1969 [Dec.23, 1968], No.61471/69. Heading G1U. In a servosystem including transmit and receive resolvers 2, 9 in which a monitor amplifier 1 is fed with a voltage e1 developed in rotor coil 3 of the transmit resolver representing the difference between the transmit and receiver rotor positions and operates an alarm 12 when this exceeds a trip value, a circuit is provided for measuring this value. The receive resolver rotor is coupled to indicator 21 and supplier from AC source E. This, via the stator windings, develops a voltage el in driven rotor 3 corresponding to the difference in rotor positions and the voltage is applied to servoamplifier 15 which provides an output to drive a motor M coupled to the rotor 10 to move the rotors into agreement and bring the voltage e1 to zero. The motor also drives a generator 20 which supplies a rate voltage to the input of the servoamplifier. To measure the trip value, the reading on the indicator 21 is noted and switches 17 and 27 closed. This cuts off the e1 input to the amplifier and replaces it by a voltage e3 obtained via transformer 25 from source E. The amplifier output drives the motor M and the rotor coil 10. Thus the voltage e1 increases and when this reaches the trip value the monitor amplifier actuates lamp 12 and relay 28 whereby the supply from source E is cut and the rotor 10 and indicator 21 stop. The difference in the indicator readings is a measure of the trip value.
Patent GB-737037-A (GB)
IPC: B23K35/22
Abstract: 737,037. Fluxes. EUTECTIC WELDING ALLOYS CO., Ltd. May 6, 1953 [Aug. 29, 1952], No. 12658/53. Class 82 (2). [Also in Group XI] An arcing electrode for heating, annealing, normalizing or arc or fusion welding of metals has a central homogeneous core of high M.P. heat-disintegrating, electrically conductive material with a heavy flux coating including a silicate of high M.P., a basic metal oxide, a heatdisintegrating gas-forming material, i.e. calcium carbide, mercury or barium oxide and a binder, e.g. a resin. The core is a wire or rod, e.g. 1/ 32 -3/ 32  inch diameter of zirconium, tungsten, titanium, thorium, cobalt, chromium, or of carbon or is of graphite or coke powder bonded with a phenolic or epoxy resin. The flux coating may comprise a silicate with two basic metal oxides and may be a quarter or half the thickness of the core. Oxides of aluminium, magnesium, sodium, potassium, lithium or calcium, and silicates of zirconium, titanium, cobalt, tungsten or chromium may be used. A metal powder, e.g. iron alloy, copper or aluminium and a binder such as sodium silicate, gum arabic, dextrine or a phenolic or epoxy resin may be added to the flux coating. In one example, the flux comprises the following percentage parts by weight: 24-45 parts of zirconium silicate, 5-15 of aluminium oxide, 10-25 of calcium carbide, 10-25 of magnesium oxide, up to 30 parts of resin binder and powdered copper.
Patent GB-2025283-A (GB)
Title: Grinding Diamonds or the Like
IPC: B24B41/04
Filed: 1978-07-14
Abstract: A method and machine is provided for carrying out the grinding or similar machining of at least one workpiece (2) of diamond or other ultra hard material by means of a grinding or like wheel (1 or 11) having an operative surface (12) or surfaces impregnated with diamond or similar hard material in which an exceptionally high degree of rigidity of support (3) of the workpiece (2) in firm contact pressure with the grinding or like wheel (1) is obtained and in which the grinding or like wheel (1) is driven at an abnormally slow speed of rotation whereby the surface speed of the wheel (1) in relation to the workpiece (2) ranges from as low as 15 surface metres per minute to 125 surface metres per minute or thereabouts. As a result a positive cutting action on the workpiece (2) is obtained in rapidly machining workpieces of diamond especially polycrystalline diamond and also of other hard material such as cubic boron nitride, ceramic cutting materials, sintered silicon carbide, silicon nitride and tungsten carbide. <IMAGE>
Patent GB-2009465-A (GB)
Title: Watch case
IPC: G04B39/00
Filed: 1978-10-12
Abstract: A watch case 15 has a plastics watch glass 17 received in a recess 16 in the case and is arranged to enable the glass to be mounted with the minimum necessary deflection in the glass to prevent cracking of the glass. The glass has a radially extending projection 25 at the lower portion of its periphery and the case recess has a radially extending groove 21 to be engaged with the projection of the glass. The recess is provided with a beveled guiding portion 20 at its entrance and the projection has a beveled guiding portion 26 at its leading edge. The glass may be inserted into the case from the front with the projection sliding on the beveled guiding edge of the recess. Axially extending surfaces 19, 24 of the recess and glass provide a seal. Several embodiments are described and the glass may retain a plastics movement- mounting ring. <IMAGE>
Patent GB-2016324-A (GB)
Title: Floor treating machines
IPC: B24D7/16
Filed: 1978-12-22
Abstract: A floor treatment machine comprises a motor mounted on the casing of the machine above the rotary floor-engaging element and having its driving shaft substantially vertical. The drive means between the driving shaft and the floor-engaging element comprises a drive element connected to the driving shaft, a driven element having means to engage and rotate the floor-engaging element, and a flexible connection between the drive and driven elements which includes an air cushion disposed between these two elements so as to transmit the weight of the machine from the drive element to the driven element via the air cushion. <IMAGE>
Patent GB-2026322-A (GB)
Title: Apparatus for stimulating growth of damaged bone and soft tissue cells
IPC: A61N1/40
Filed: 1979-02-26
Abstract: Apparatus for stimulating growth of damaged bone and soft tissue cells has a generator 12 producing an alternating current carrier treatment signal which is continuously amplitude modulated by more than 100% with an audio frequency signal, and the modulated signal is coupled by electrodes 14b, 16b to an area of a living body to be treated without surgical invasion. The electrodes may both be bare, or both insulated or one of each type. The carrier frequency may be 15 to 60 KHz and the modulating signal, which is continuously swept in frequency, may be in the range 100 to 4000 Hz. The greater than 100% modulation gives a pulsing characteristic so that the modulated signal has a triangular envelope and a 1 second or less pulsing cycle. The carrier frequency automatically changes as a function of body capacitance so that the electrode system maintains a series resonance with the body. The applied signal is apparently rectified so that a negative D.C. charge is developed at the treatment site to induce natural growth. <IMAGE>
Patent GB-2019787-A (GB)
Title: Cage Shaped Protective Frame for Tractor or Similar Machine
IPC: B60R21/13
Filed: 1979-03-08
Abstract: A cage shaped protective frame for a tractor (or similar machine) has at least four support posts 2, 3 and a top frame constructed from top frame members 7, 8, 9, 10, each support post and top frame member having a cross-section with different bending stiffnesses about its principal axes. Each top frame member is orientated so that its principal axis about which the highest bending stiffness occurs extends perpendicularly relative to the plane of the top frame, and the rear support posts 3 are arranged so that the principal axis of each of the two posts about which the highest bending stiffness occurs is disposed substantially perpendicularly to the vertical plane containing the longitudinal axis 4 of the tractor. The frame is thus particularly adapted to withstand impacts due to sideways or backwards tipping of the tractor. <IMAGE>
Patent GB-2018631-A (GB)
Title: Apparatus and method for brushing out the unexposed portions of a photopolymer printing cylinder
IPC: G03F7/30
Filed: 1979-04-05
Abstract: Apparatus and method for brushing out the unexposed portions of a photopolymer printing cylinder 6. The printing cylinder 6 and a pair of brushes 44, 45 are mounted for rotation about parallel axes. The brushes rotate in a container for solvent in opposite senses B, C, and apply solvent to the printing cylinder to dissolve and brush out the softer, unexposed material on the printing cylinder. The ratio of the relative surface speeds between the printing cylinder and the brushes preferably is as close to equal as possible and is not more than 1.75 to 1. <IMAGE>
Patent GB-2019578-A (GB)
Title: Measuring gas flow
IPC: G01F1/684
Filed: 1979-04-17
Abstract: Apparatus for measuring the throughflow or speed of a gas in a conduit 1, comprising temperature- sensitive electrical resistance 3 in the conduit and means for heating as 5, 2, or cooling the gas to a predetermined temperature. Temperature sensor 4 measures the temperature of the aluminium block 2. A further temperature sensor is used for thermostatically controlling the temperature of the block. Temperature sensor 6 provides compensation for volume change. Sensors 3 and 6 are in series in one arm and sensor 4 in another arm of a bridge feeding a comparator. <IMAGE>
Patent GB-2056486-A (GB)
Title: Corrosion Resistant Copper Base Alloys for Heat Exchanger Tube
IPC: C22C9/06
Filed: 1979-05-23
Abstract: The single phase alloy essentially consists of from 3 to 7.5% by weight nickel, 1 to 4% by weight aluminum, up to 3% by weight iron, 0.001 to 1.0% by weight manganese, and the balance substantially copper, but there may be optionally present up to 1% Cr, up to 3% Co (with the proviso that Co+Fe NOTGREATER 4) and 0.0-2% each of As, Sb and P. The alloy may be homogenised at 500-1050 DEG C, hot worked to finish at  NOTLESS 400 DEG C, and cold rolled, if necessary with intermediate anneals at 50 DEG -1050 DEG C. Following hot working and annealing the alloy is water quenched to retain a solid solution.
Patent GB-2051944-A (GB)
Title: Improvements in and Relating to Hinge Elements for Step Ladders
IPC: E06C1/16
Filed: 1979-07-03
Abstract: A hinge element suitable for use as an apex hinge for a step ladder comprises two elongated members (1) located between parallel plate members (3, 3'), which provide hinge means (7) and means (10) for limiting the relative hinging movement of the members (1). The members 1 are preferably of generally rectangular tubular section and form sockets for receiving spigots at the upper end of the side rails of ladder modules to be assembled into a step ladder. In use, two such hinge elements are required together with two ladder modules, to form a step ladder or trestle. Spring catch members 11 are provided in the members 1 and integral pins 11' are adapted to be located in apertures 12 in the plate members 3'. <IMAGE>
Patent GB-2021710-A (GB)
Title: Positive engagement clutch
IPC: A01C19/00
Filed: 1979-07-05
Abstract: A clutch device for a seed metering device 62 in an agricultural seed drill comprises a first member 20 located on a drive shaft 10 and having an annular portion 25 coaxial with the shaft and from which project three inwardly extending lugs 26, there being a gap 27 between the lugs and the shaft; and a second member 61 located on the driven shaft 60 and including three axially extending tongue portions 64 which are adapted to locate within the annular portion 25 of the first member 20 and to cooperate with the lugs 26 whereby drive is transmitted from the drive shaft 10 to the driven shaft 60. A caliper member 40 extends around a portion of the projecting tongue means 64 and is operated by a bowden cable to compress the resilient tongue means 64 away from engagement with the lugs 26 and thus break the drive between the driven shaft and the drive shaft. Preferably the second member 61 is encased in a housing 50 forming a bearing and the caliper means 40 is pivotally attached to the housing 50. <IMAGE>
Patent GB-2025994-A (GB)
Title: Process for producing propylene- ethylene block copolymers
IPC: C08F297/00
Filed: 1979-07-19
Abstract: A process for producing propylene- ethylene block copolymers by a three-step polymerisation technique comprises (i) polymerising propylene alone, or a propylene/ethylene mixture at an ethylene/propylene molar ratio of 6/94 or less, thereby polymerising 60 to 95% by weight of said block copolymer, (ii) polymerising the product of step (i) with a propylene/ethylene mixture of molar ratio of 41 /59 to 69/31 respectively, thereby polymerising a further 1 to 20% by weight of said block copolymer, and (iii) polymerising the product of step (ii) with ethylene alone, or a propylene/ ethylene mixture of molar ratio of 90/10 or more respectively, thereby polymerising the final 4 to 35% by weight of said block copolymer, each of steps (i), (ii) and (iii) being carried out batchwise in the presence of a stereoregular polymerisation catalyst.
Patent GB-2030960-A (GB)
Title: Reel for winding filiform articles
IPC: B65H75/20
Filed: 1979-07-23
Abstract: An inexpensive and easily constructed reel for filiform articles such as wires and cables, particularly welding wires is provided. The reel comprises a tubular hub (1) having at each end a set of spokes (2) fixed tangentially to the hub and extending outwardly to a circumferential ring (3) with a series of tie members (4) running from one of the sets of spokes to the other to serve as an underlying support for the wire being wound. A cylindrical winding core portion (6) usually surrounds the tie members (4), and end plates (5) with drive holes (7) abut the spokes. Advantageously the spokes, rings and tie members are of steel wire and the winding core and end-plates are of cardboard. <IMAGE>
Patent GB-2026922-A (GB)
Title: Plasma etching metal
IPC: C23F4/00
Filed: 1979-07-23
Abstract: A process for etching metal uses a gas plasma derived from a chlorine containing silicon compound free of carbon atoms. The metal may be a film of aluminium on a silicon substrate for semiconductors. A preferred plasma comprises silicon tetrachloride with helium which leaves no residue.
Patent GB-2027299-A (GB)
Title: Capacitively tuneable circuit in ???/4 technique
IPC: H03B1/00
Filed: 1979-07-26
Abstract: The circuit comprises a printed circuit board 1 supporting the components of the circuit and also a strip conductor 2. The components include a transistor 4 (which may be an RF stage amplifier). The collector of the transistor is arranged mechanically parallel to the strip conductor and the circuit 4 is tuned by bending the collector lead. The collector lead has an insulating coating 5 or the strip conductor has an insulating coating 6. <IMAGE>
Patent GB-2035797-A (GB)
Title: Spring damped vehicle seat
IPC: B60N2/52
Filed: 1979-02-09
Abstract: The seat (2) for vehicles, machines and the like, damped by means of one or more springs (8), may be set at a given initial level in view of different loads in order to optimize the available travel of the spring. At least one hydraulic jack (6) is supporting the spring(s) in order to allow easy and quick setting of the initial level. The seat is provided with a sensor (9) indicating the level of the seat and operating as the sensor of an adjusting device which controls the hydraulic jack, thereby providing for a given average level of the seat. The adjusting device operates for a short time in order to match the spring tension against the weight of a person sitting on the seat and, by means of valves (11) connects the hydraulic jack with a pressurized fluid (13) or with a return pipe until the displacement of the spring support brings the spring at its initial level. After the support is locked at its new position and the adjusting device starts to operate, the damping of the seat matches the new load.
Patent GB-2049594-A (GB)
Title: Water craft propulsion
IPC: B63H1/36
Filed: 1979-10-26
Abstract: A hand propelled water craft, e.g. a dinghy, skiff, raft or float, is provided with propelling means constituted by at least one member (11) having a pivotal middle portion (16) and two end portions one (12) of which is paddle-shaped and adapted to drive the craft when the other end portion (20) is manually moved, said paddle-shaped portion being underwater when the craft is in use in smooth water and adapted to oscillate around a pivotal bearing (14) which allows the paddle-shaped portion to swing so that the craft is propelled by an up and down movement of the free end of the paddle-shaped portion. <IMAGE>
Patent GB-2034906-A (GB)
Title: Electrostatic copying apparatus
IPC: G03G15/30
Filed: 1979-10-29
Abstract: In a reciprocating document scan system, the scanning drive mechanism 28 is de-energised for a predetermined length of time between a scan stroke and a return stroke so that by the time the return stroke is made, the copy lamp 17 has been extinguished. This prevents erroneous imaging of a photoconductive drum 12 which would result in unnecessary loading of a cleaning unit 26 and formation of a partial reversed image in addition to a desired image on a copy sheet 23. The delay may be provided by an RC circuit (37, 38, Fig. 1 not shown) or by signals (generated at 48, 56, Figs. 3 and 5 not shown) indicative of lamp illumination and image magnification. Control circuitry (61 Fig. 6 not shown) may be provided to cause the de-energisation only when the magnification is less than unity or when the length of the copy sheet 23 in the scan direction is longer than the corresponding image length. <IMAGE>
Patent GB-2039548-A (GB)
Title: Device for severing a ropelike strand of fibres
IPC: B65H67/04
Filed: 1979-12-17
Abstract: A device is provided for severing sliver during can change as the sliver is filled into spinning cans after leaving a card or drawing frame. The device comprises a nozzle (6) located at the delivery end of drawing-off rolls (3), and linked to a compressed air supply tank through a valve (8). The nozzle is directed at the entry opening of the duct (11) of a rotating sliver guide (4) serving to fill the sliver (12) into a spinning can (10). When the valve (8) operates (during can change) a jet of air from the nozzle (6) impinges on the sliver (12) causing it to be separated into its individual strands, thus facilitating breakage. <IMAGE>
Patent GB-2045184-A (GB)
Title: Steering wheel assembly
IPC: B62D1/04
Filed: 1979-12-24
Abstract: An automotive steering wheel assembly, e.g. for a steering column steeply inclined to the vehicle floor, comprises a hub (1), a ring (2) and spokes (3, 4), connecting the hub and the ring, the spokes being located in plane or defining a dished structure, wherein the spokes (3, 4) are pre-bent laterally in a direction extending substantially parallel to the tangent to the ring in the region in which the spoke is connected to the ring. <IMAGE>
Patent GB-2047447-A (GB)
Title: Drive control circuit for dental treatment instruments
IPC: A61C1/02
Filed: 1980-03-28
Abstract: A circuit arrangement is provided for controlling the drive of dental treatment instruments by means of driving devices associated therewith and the operating data of which are adapted to be fed to a separate forward /backward counter (20) when the particular treatment instrument is selected for use. A starter switch (1) is connected to the forward/backward counter (20) and is operable, when actuated, to vary the particular counter position of the counter step-wise for the purpose of varying the operating data and for transmission to a control element, for the control thereof, which is associated with the particular treatment instrument. Upon actuation of the starter switch in order to vary the counter position of the forward/backward counter, the counting speed of the counter is increased with increasing actuation time of the starter switch by reason of the fact that the counter receives a number of counter pulses which increase per time unit. <IMAGE>
Patent GB-2074459-A (GB)
Title: Manipulative toy
IPC: A63F9/08
Filed: 1980-04-15
Abstract: Eight triangular prisms (P1 to P8) having angles of 45 DEG , 671 DIVIDED 2 DEG  and 671 DIVIDED 2 DEG  are hinged one to another about hinge axes (H1 to H8) in a ring around a central axis C, so that the device can be manipulated to a number of different positions, for example by aligning different hinge axes to permit hinging of portions of the device about those aligned hinge axes. The device is formed from four similarly shaped blanks of card. An alternative embodiment is disclosed in which the prisms have angles of 45 DEG  and 45 DEG  and 90 DEG . <IMAGE>
Patent GB-2075823-A (GB)
Title: Curtain rod assembly
IPC: A47H1/142
Filed: 1980-05-02
Abstract: Brackets for holding the ends of a curtain rod are in two parts of which a lower part 4 is illustrated in Figure 4. This part 4 has a flange with a screw hole 9 for attachment to a wall surface, and a semi-cylindrical cradle portion 7 to receive and support the curtain rod. A dovetail 12 is provided on either side of the cradle portion to match with a complementary dovetail on a second part of the bracket which closes the top of the cradle portion 7 to to prevent removal of the curtain rod. <IMAGE>