baber/WOPTO huggingface dataset:
Patent GB-2022129-A (GB)
Title: Process for the separation and recovery of isobutene
IPC: C07C29/04
Filed: 1979-04-09
Abstract: Isobutene in a hydrocarbon mixture 2 is converted to tertiary butanol (TBA) by reaction with water 3 to produce a mixture 5 and 5' from which TBA is separated and thereafter dehydrated to regenerate the isobutene 18. The process is carried out continuously using cation exchange resin catalysts in the hydration and dehydration steps. The Figures illustrate procedures for treating separating and treating the mixture produced in the hydration and dehydration steps 1 (and 1') and 10. <IMAGE>
Patent GB-2016716-A (GB)
Title: Vehicle-Wheel Tracking Tool
IPC: G01B5/14
Filed: 1979-04-25
Abstract: A vehicle-wheel tracking tool comprises a tubular linear holder (10) and at least one linear member (11) slideable therein and able to be extended to span the width (d) apart of two internally opposed wheel faces, the linear holder and linear member being gripped together to prevent relative sliding movement by spring means (12) releasable manually. <IMAGE>
Patent GB-2020911-A (GB)
Title: Minimum level sensor for liquid containers in vehicles
IPC: G01F23/74
Filed: 1979-05-11
Abstract: A minimum level sensor (1) for liquid containers in vehicles, comprising a float (2) having an associated electrical switching device such as a magnetic reed contact unit (6), and means (13) which prevent the actuation of the switching device (6) when the vehicle accelerates or is obliquely positioned, in which the said means (13) consists of an obstruction object (13) arranged underneath the float (2) and able to move relative to the float (2) from an inactive normal resting position into an obstructive position in which it prevents the float (2) from falling to or below the minimum level (5). <IMAGE>
Patent GB-2039069-A (GB)
Title: Printing plate for lithography and method of making same from an electrophotographic material
IPC: G03G13/28
Filed: 1979-07-17
Abstract: A sheet member for making a printing plate for lithography and the resulting printing plate comprises a substrate of sheet metal having sufficient flexibility to enable attachment to a printing press roller. The plate has an r.f. bias sputtered coating of a photoconductive material which has a high photonic quantum efficiency, is microcrystalline, wholly inorganic, flexible and capable of being imaged by an electrostatic technique which includes charging, exposing and toning. The toned parts and untoned parts are rendered respectively hydrophobic and hydrophilic by suitable processes. The hydrophobic parts are oleophilic and the hydrophilic parts are oleophobic. A method of making the coated sheet metal member is described involving an r.f. bias sputtering process.
Patent GB-2035872-A (GB)
Title: Electron beam welding of metal objects
IPC: F16H55/17
Filed: 1979-08-20
Abstract: In effecting a relatively deep and narrow weld between two metal objects (1 & 2), e.g. in forming a compound gear for a vehicle transmission, at least one of which objects is formed of sintered metal, an air vent passage (5, 6 & 7) is provided which leads from the rear of the welding zone to the outside and vents air evolved from the sintered metal during an electron beam welding operation, whereby formation of large air pockets in the weld zone is avoided. <IMAGE>
Patent GB-2031050-A (GB)
Title: A Well Cementing/Plug Drilling Apparatus and Cementing and Drilling Process
IPC: E21B29/00
Filed: 1979-09-10
Abstract: The present invention provides a combined well pipe attachment and pump down wipe plug, in which interlocking means are provided at the interface between the plug and the attachment, which means comprise sharp protrusions operative to penetrate the surface of the plug and/or the attachment in order to inhibit or impede relative rotation between the plug and the attachment when a rotary drill bit is brought into contact with the plug, in order to drill out the plug. In one embodiment the interlocking means take the form of a flat plate (120) provided on both surfaces with teeth (117) which are strong enough and sharp enough to engage, dent and penetrate a cement surface (122) and a pump down wipe plug (121). Another embodiment comprises setting the teeth (117) in the cement surface (122), whilst a further embodiment comprises providing the teeth (117) on one, - or if the pump down wipe plug is a bottom plug as opposed to the illustrated top plug - both, ends of the pump down wipe plug (121). <IMAGE>
Patent GB-2051862-A (GB)
Title: Electrolytic reclamation of precious metals
IPC: C25C7/00
Filed: 1980-02-15
Abstract: Apparatus for the electrolytic reclamation of precious metals, especially of silver, from aqueous precious-metal salt solutions, comprises an electrolytic vessel 1 which has at the top an inlet 10 and at the bottom an outlet 11 for the precious-metal salt solution to be electrolyzed, and wherein are vertically and concentrically disposed in spaced relationship a cylindrical anode 15 and a cathode 16 with a motor driven stripping equipment 20 concentric to the anode and arranged to rotate in the space between anode and cathode, and with a filter 6 for collecting the separated precious metal entrained by the electrolyte flow. The filter 6 is situated in a filtering vessel disposed next to the electrolytic vessel. The electrolyte vessel is provided with a pressure limiter or with a breather 14. A rotatable slide plate 23 is preferably provided near the bottom of the electrolytic vessel to travel with slight clearance across the outlet opening located in the bottom, and is preferably rigidly connected with the stripping equipment. Preferably the inlet 12 to and the outlet 13 from the filtering vessel are located at the top, the outlet being screened by a filter bag 25 spread out by means of a spreading-out device consisting of several rods 26 encircled by a helical spring 27 and the inlet being outside of the filter bag. <IMAGE>
Patent GB-2070295-A (GB)
Title: System for regulating an electrical power supply
IPC: H02M3/158
Filed: 1980-02-26
Abstract: A control system for regulating the supply to a load by pulse width modulation of at least two transistors connected thereto in parallel, comprises a first closed-loop feedback system for comparing the voltages across a pair of transistors (eg T1, T2) operating in a steady state, using a comparator (Z2), and adapting any discrepancy to modify the base drive current (by E2) of one transistor (T2) so that the pair maintain the same collector-emitter saturation voltage. A second closed- loop feedback system (X1, X2 etc Figure 1) compares the phase of the base drive signal of each transistor (eg T1) with a common reference oscillating signal from a master oscillator, the phases being compared and any discrepancies being fed to phase shifters which modify the phase of the base drive signals to match same with the common reference oscillating signal to ensure simultaneous switching of the transistors from one steady state to the other. Each transistor has a separate second closed- loop feedback system. <IMAGE>
Patent GB-2044862-A (GB)
Title: Mechanical seal for preventing fluid leakage
IPC: F16J15/34
Filed: 1980-03-14
Abstract: A mechanical seal for pumps and the like comprises a carbon face-sealing ring 3 adhesively secured and axially located by a shoulder in a metal housing ring 6 and resiliently loaded by a compression spring 5 to seal against a counterface ring 4, the carbon sealing ring and the counterface ring being respectively sealed in relatively rotatable parts by resilient O- ring backing seals 7, 8. <IMAGE>
Patent GB-2048613-A (GB)
Title: Sonic transducer
IPC: B06B1/06
Filed: 1980-03-17
Abstract: A half-wave length resonant extensional mode electromechanical transducer of the kind utilising piezo electric driving elements (11, 14) maintained under compression between metallic end members (10, 20) is designed for maximum electromechanical coupling by arranging the piezo electric material in a stack having an optimum phase length, which approximates to 60 DEG  in the case of a transducer in which the end members are made of steel and the piezo-electric material is PZT 8 and the cross-sectional area of the piezo-electric elements is equal to that of the end members. <IMAGE>
Patent GB-2048820-A (GB)
Title: Bale handling apparatus
IPC: A01D87/12
Filed: 1980-05-07
Abstract: A bale handling apparatus for handling generally cylindrical bales 30 of straw, hay or other fibrous material comprises a frame member 10 pivoted at 25 for rotation about a horizontal axis between a vertical position (illustrated) and a horizontal position. The frame 10 carries a pair of opposed arcuate arms 11, 12 which are pivotally movable towards and away from one another for respectively picking up and releasing a bale 30. The frame 10 is mounted on the lifting arms 23 of a tractor 24 and its pivotal movement is controlled by hydraulic rams 27. The opening and closing of the arms 11, 12 is controlled by further hydraulic rams 17. <IMAGE>
Patent GB-2052421-A (GB)
Title: Auger feed device
IPC: B29B17/04
Filed: 1980-05-13
Abstract: An auger feed device 10 has an elongate auger 14 rotatably mounted in a trough assembly 12, said trough assembly being substantially U-shaped in transverse cross-section and having a fixed wall portion 30 located on the upwardly moving side of the flight 16 of the auger 14 and a pivotable wall portion 32 located on the downwardly moving side of the flight 16 of the auger, the wall portion being pivotable outwardly about a hinge 36 against the force of springs 38 if an object or finger of an operator becomes jammed between the wall portion 32 and the auger 14. The wall portion 32 may be moved about its hinged by power operated means. <IMAGE>
Patent GB-2077717-A (GB)
Title: Bicyclic ketals
IPC: C07D321/10
Filed: 1980-06-10
Abstract: Bicyclic ketals according to the general formula:   <IMAGE> wherein R<1> and R<2> are H, alkyl, aryl, aralkyl or alkaryl and R<3>, R<4>, R<5>, R<6>, R<7> and R<8> are H, alkyl, aryl, aralkyl or alkaryl which may be substituted by one or more alkoxy groups or R<3> and R<4> and/or R<7> and R<8> together form an alkylene moiety, are novel compounds which are useful intermediates in the preparation of 3-aza-bicyclo[3. 1 .0]hexane and derivatives thereof such as methanoproline. The bicyclic ketals can be prepared by dehalohydrogenation of the corresponding 8,8- dihalo derivatives.
Patent GB-2049255-A (GB)
Title: Piano-action keyboard
IPC: G10B3/12
Filed: 1979-12-27
Abstract: A piano-action keyboard for an electronic musical instrument or the like wipes a switch actuator (39) across switch contacts (78, 88) on a printed circuit board (60) to generate signals indicative of the position and motion of a key when played. The keyboard provides a highly realistic piano "feel" through an array of paired depressable playing keys (12) and arms (24). Each such arm supports a switch actuator (26) or the like, with varying force transmission at different stages of depression of its corresponding key, the overall electrical-mechanical combination affording a response in terms of both actual results and kinesthetic feedback simulating a manual piano action.
Patent GB-2049831-A (GB)
Title: Wind Turbine Plant
IPC: F03D11/04
Filed: 1980-05-16
Abstract: The plant includes a platform 3 which is maintained aloft by the vertical force component generated by rotation of the inclined axis wind turbine rotor 5, the platform being tethered to the ground by at least three cables 2, another form of rotor is also described. <IMAGE>
Patent GB-2063414-A (GB)
Title: Cleaning of Printed Circuit Boards
IPC: B08B3/02
Filed: 1980-07-24
Abstract: The invention relates to the cleaning of a workpiece 1 comprising a printed circuit board in which, in addition to impacting the upper and lower surfaces of the workpiece 1 with high velocity jets of cleaning liquid from nozzles (6, 7 Fig. 1, not shown) disposed both above and below a conveyor 3 the workpiece is also subjected to the action of jets of cleaning fluid directed generally horizontally towards the workpiece from further nozzles 9 alongside of the conveyor 3 to clean and flush any blind holes, crevices and recesses which are not cleaned by the top and bottom jets. The further nozzles 9 operate at lower pressure and velocity and may be adjustable or oscillatory. The jets may all be fan or conical and/or as defined in GB 1456729A. <IMAGE>
Patent GB-2060851-A (GB)
Title: Method of and apparatus for keeping fresh and preserving perishable products, in particular foodstuffs
IPC: A23L3/34
Filed: 1980-08-13
Abstract: For keeping fresh and preserving perishable products the perishable products are introduced into a closable thermally insulated container (1) and thereafter the atmosphere within the container (1) is controlled by injecting liquefied gas from a battery of gas bottles (3) thereinto through spray nozzles (7). To regulate the temperature and the composition of the gas mixture within the container temperature sensors (8) are arranged close to the top and bottom of the container as well as gas concentration regulators (9). <IMAGE>
Patent GB-2084690-A (GB)
Title: Inducing lift on a stationary wing
IPC: B64C21/04
Filed: 1980-09-26
Abstract: The invention claims to give conventional fixed wing aircraft the ability to take off vertically and hover using a propulsive thrust which is considerably less than the aircraft weight, the wing having leading (7, 9) and trailing (6, 10) edge flaps, wing fins (5) on upper and lower surfaces at approximately mid semi-span, continuous propulsive flaps (9, 10) at the wing inboard leading edge and the outboard trailing edge, and intake slots (11, 12) at the wing inboard leading edge and the outboard trailing edge. For VTOL, the leading and trailing edge flaps are lowered, a rearward airflow over the wing inboard of fins (5) being induced by leading edge blowing (1), and a forward airflow over the wing outboard of fins (5) by forward blowing (3) at the trailing edge, the required air being drawn into intakes (11, 12). For cruise, the flaps are at zero deflection and the trailing edge blowing is directed rearwardly. Differential blowing can be used for control. <IMAGE>
Patent GB-2077400-A (GB)
Title: Air-to-air or ground-to-air automatic fire control system
IPC: F41G5/14
Filed: 1980-10-06
Abstract: This invention relates to an automatic fire control unit for aircraft- mounted weapons. It includes a swivelling television camera coupled with one or several gyroscopes, and a television automatic tracking system using a processor to maintain the camera permanently focussed on a target and to steer the laying of the weapon mounted on the aircraft according to the direction of the axis of the camera, this direction being determined by sensors associated with the gyroscopes. The target acquisition takes place on a television screen on which an image of the automatic tracking system lock-on window is shown by an indicator. The pilot's functions are thus simplified and the influence of the aircraft instability is excluded. <IMAGE>
Patent GB-2091816-A (GB)
Title: A well pumping system
IPC: F04B47/04
Filed: 1981-01-26
Abstract: The pumping of water from a gas well is effected by a pump driven by a gas motor having first and second pistons 15, 16 located in first and second chambers respectively. The pistons are fixed together and a piston rod 17 extends from the motor and is connected to a well pumping apparatus which in operation extends downwardly into the well. Gas applied to the first piston 15 counter-balances the weight of the pistons and well apparatus, while the second piston 16 is responsive to pressure variations of gas on each side to effect a reciprocating motion of the piston rod. A control unit 7 is connected to each chamber portion of the second chamber on opposite sides of the second piston and also to a pressure medium store 8 and an outlet of the gas well. The control unit is operable to feed gas from the well alternately to one or the opposed chamber portions while simultaneously directing gas exhausted from the respective opposite chamber portion to the store. <IMAGE>
Patent GB-2092966-A (GB)
Title: Steering column assembly
IPC: B62D1/184
Filed: 1981-02-13
Abstract: A steering column assembly comprises a column part (1), a support (7) rotatably carrying the column part (1), a bracket (8) carrying the support (7) and adapted to be secured to a fixed member, means (16,20) securing the support (7) to the bracket (8) to permit relative movement thereof, and a lock (21,22, 31,43) for fixing the bracket (8) and the support (7) in a desired relative configuration, and including a locking element (31) movable into and out of a locking position and biased into the locking position by spring means, e.g. Belleville washers (40) thereby reducing the risk of accidental unlocking or application of an inadequate locking force. <IMAGE>
Patent GB-2070240-A (GB)
Title: Circuit arrangement for measuring the heart rate
IPC: A61B5/024
Filed: 1981-02-18
Abstract: When the heart rate is measured by means of a light source (23) which irradiates tissue (21) through which blood circulates and a light detector (14), the evaluation is influenced not only by differences in transmission, but also by vaso- motor activity of the vascular system. Therefore a control circuit (2) for the light source (23) ensures that the mean value of the output signal of the detector (14) remains constant, and also a control circuit (9) stabilises the heart-pulse signal which is applied to an evaluation/ display device 13. The heart-pulse amplitude is averaged over several heart-pulse periods (10), the mean value being used as a real value for a control circuit (9) which stabilizes the electrical heart-pulse signal. The light source (23) may be pulsed (1) and the detected signal demodulated (3). The amplified (6) and filtered (5) signal is composed with a reference level (at 7) and the output fed via a band rejection filter (22) to the light source controll amplifier (2) and via a bandpass filter (9a) to pulse amplifier (9). <IMAGE>
Patent GB-2081009-A (GB)
Title: Electron irradiation of power transistors
IPC: H01L21/331
Filed: 1981-03-24
Abstract: A method for reducing storage time and gain parameters in a semiconductor transistor includes the step of subjecting the transistor to electron irradiation of a dosage determined from measurements of the parameters of a test batch of transistors. Reduction of carrier lifetime by proton bombardment and gold doping is mentioned as an alternative to electron irradiation.
Patent GB-2095962-A (GB)
Title: Barrier for repelling garden pests
IPC: A01G13/10
Filed: 1981-04-02
Abstract: A barrier for repelling garden pests such as slugs is formed as an extruded polymeric strip (1) with a shelf (2) to support the pest repellent (e.g. salt) protruding from part way up on an outer face of the strip and a cover (3) spaced above the shelf and protecting it from the weather. The lower edge (4) is adapted for attachment to the ribbed top edge (5) of a second strip (6) which can be pressed into the soil. <IMAGE>
Patent GB-2099315-A (GB)
Title: Toy medical monitoring unit
IPC: A63H33/30
Filed: 1981-06-02
Abstract: A toy medical monitoring unit has a housing 10 with viewing openings 14, 16 for a plurality of rotatable cylindrical drums respectively having indicia-simulating pulse rate and blood pressure. Bellows or like means 118, 124 are operable manually to rotate said drums. A dial indicating fictitious body temperature has a reference needle movable relative to said dial which is actuated by a double-acting bellows movable in one direction by blowing upon a mouth-piece 112 on a hose connected to said bellows. The resiliency of the bellows restores it to its initial position after compression. <IMAGE>
Patent GB-2093517-A (GB)
Title: Securing means
IPC: F16B7/02
Filed: 1981-06-22
Abstract: A securing means for securing a tubular member 17 to an article or to another tubular member comprises a stud 12 having screw threaded end portions, a sleeve 18 defining a conical seat at one end, a locking body 19 inserted in the conical seat, and a nut 20 which engages the screw thread. The sleeve is provided with a stabilising means 22 which can be grasped even when the tubular portion of the sleeve has been inserted into a tube 17. Rotation of the threaded stud then causes the locking body 19 to be drawn down into the conical seat forcing parts 24 of the sleeve outwardly to secure the tube 17 to the securing means. In a similar manner a second tube can be connected to the other end of the threaded stud, thus connecting two tubes together. <IMAGE>
Patent GB-2080794-A (GB)
Title: 1,6-Naphthyridine derivatives
IPC: C07D471/04
Filed: 1981-06-23
Abstract: 1,6-Naphthyridine derivatives of the Formula   <IMAGE>  and salts and quaternary salts thereof  (wherein R represents hydrogen, carboxy, C1-4 alkoxycarbonyl, carbamoyl, carbohydrazido or cyano, and either   (1) X is oxygen, or sulfur and i/R<2> and R<3> together form a valence bond, and R<1> represents hydrogen, C1-6 alkyl, C3-4 alkenyl or C7-12 aralkyl or ii/R<1> and R<2> together form a valence bond, and R<3> represents hydrogen, C1-6 alkyl, C3-4 alkenyl or C7-12 aralkyl or (2) R<1> and R<2> together form a valence bond, and X-R<3> represents halogen), are of interest as antibacterial and antifungal agents and for various agrochemical uses. They can be made by reacting a dialkyl 2,6-dimethylpyridine-3,5- dicarboxylate with 1,3,5-triazine and if necessary further transforming the product.
Patent GB-2078362-A (GB)
Title: Heat exchangers and heat exchanger headers
IPC: F28F21/06
Filed: 1981-06-24
Abstract: A heat exchanger has a header formed of a number of separately moulded plastics members. These comprise a first member (8), or a number of first members, having a series of connections (14) for the tubes (2) of the heat exchanger to the interior of the header, and a second member (16), or a number of second members, providing a cover for the first member or members to enclose the header interior. Partitioning means (9), which may be integral with the first and/or second members divide the header interior into separate compartments communicating with spaced tube connections. <IMAGE>
Patent GB-2083655-A (GB)
Title: Microcomputer control circuit for an optical zooming device
IPC: G02B7/10
Filed: 1981-07-10
Abstract: A driver section for a pulse motor, a detection section and an operation section are coupled through an interface circuit 5 to a central processing unit 1 and a supply a start signal, a magnification specifying signal, an origin position signal and a clock signal to the unit 1. In response to these signals, the unit 1 advances through predetermined program steps stored in a read-only memory 2 to apply an acceleration/ deceleration signal, a forward/reverse rotation signal and a gating signal to the various sections to cause the pulse motor to move the zoom lens assembly to a selected magnification position. <IMAGE>