baber/WOPTO huggingface dataset:
Patent GB-1284428-A (GB)
Title: Control of dc motors
Inventor: LARSSON EDVIN
IPC: H02P5/69
Filed: 1969-12-30
Abstract: 1284428 Control of D.C. motors ALLMANNA SVENSKA ELEKTRISKA AB 30 Dec 1969 [31 Dec 1968] 63215/69 Heading H2J [Also in Division G3] A rectifying system in which the power factor is maintained at a high value comprises a D.C. motor with a field winding which is fed with constant current throughout the entire speed-range, and an opposing field winding which is excited over a limited range of speeds from a predetermined value up to the maximum value, the latter excitation being adjusted to provide constant power over the limited speed-range. The predetermined value of the speed corresponds to operation at full armature voltage and rated field excitation. Motors 11, 12, are mechanically coupled to drive a printing press and have main field windings 15, 17, and opposing field windings 16, 18. The motor 11 is supplied from A.C. source 19 through thyristor 22 having a trigger device 23, associated with a current regulator 24. A reference signal EI ref is compared with a signal EI representing the armature current. of the motor, and the deviation signal is applied to the regulator 24. The motor 12 is controlled in a similar manner. The field windings 15, 17 are separately supplied through uncontrolled rectifiers having a constant current. A speed regulator 26 receives signals from a tachometer generator TG and a reference signal from source 27, the speed error signal being applied through amplifiers 28, 29, to form the current reference signals. When the speed reference is adjusted by means of potentiometer 30, potentiometer 31 is also adjusted to control the output voltage of a function generator 32, this voltage bing set at zero for speeds less than 70% of the maximum. At higher speeds, the function generator provides a reference voltage for controlling the excitation of the field windings 16, 18, in a non-linear manner. These field windings are supplied through rectifier 33 having trigger device 37 associated with regulator 38 receiving signals from the function generator 32 and from the output of the rectifier 33.
Patent GB-701143-A (GB)
Abstract: 701,143. Thermally-actuated valves. GENERAL MOTORS CORPORATION. April 7, 1952 [April 6, 1951], No. 8786/52. Addition to 694,126. Class 135 The lever 72 by which the temperature is set for the opening of the valve in the temperatureresponsive fluid flow control mechanism described in the parent Specification has its pivot pin 73 in frame slots 102 and normally pressed to one end of the slots by a spring 107 so that when the valve is locked in the open or closed position by the cam 54; the lever can pivot about the edge of the cam against the spring should the actuating bellows and its abutment rod 75 expand when subjected to an extreme temperature.
Patent GB-734499-A (GB)
Abstract: 734,499. Cartons. SHELLMAR PRODUCTS CORPORATION. Jan. 31, 1952 [Sept. 19, 1951], No. 2602/52. Class 18. A moulded egg carton has tongues 66 on an integral lid portion engaging openings 55 in reinforced portions of the front wall of the body portion. The openings 55 are formed by blanking off portions of the mould by blocks whereby pulp deposited at the edges of the blocks produces inwardly extending thickening rims. The tongues are pressed' inwardly to engage behind the rims. A lid bracing flange 57 as described in Specification 732,667 may be integral with the body.
Patent GB-2006502-A (GB)
Title: Accoustic drums
IPC: G10D13/02
Filed: 1978-07-26
Abstract: A musical drum has a hollow elongate body of resin impregnated glass fibre, open at both ends. A membrane 14 is stretched across one end and secured thereto. The said end is circular and the body has a cylindrical portion including the said end and then has a flared portion with a curved central axis 17. The flared portion terminates in a generally oval opening and includes a hollow ridge 19. In use of the drum, two notes are produced, one at the centre of the open end and the other, an octave lower, in the ridge. A base drum incorporating the invention is also described. <IMAGE>
Patent GB-2003563-A (GB)
Title: Spot-type disc brakes
IPC: F16D65/28
Filed: 1978-08-30
Abstract: The pivoted caliper 4 includes hydraulic actuators 8 and a mechanical actuator 9, the latter being operated by a lever 12 articulated at 14 to the piston rod of an actuator 16 whose line of action 17 is parallel to the caliper pivot axis 5. Either articulation 14 or the mounting of the actuator on its support 27 is such as to allow some movement perpendicular to the plane of the drawing during caliper movement. <IMAGE>
Patent GB-2006743-A (GB)
Title: Aerobic/anaerobic sludge digestion process
IPC: C02F3/26
Filed: 1978-10-12
Abstract: A process for digestion of sludge comprises introducing the sludge and aeration feed gas to a first digestion zone, oxygenating the sludge therein at a temperature of from 35 to 75 DEG C to form partially stabilized sludge and then anaerobically digesting the partially stabilized sludge in a covered second digestion zone at a temperature of from 25 to 60 DEG C to form further stabilized sludge and methane gas.
Patent GB-2010167-A (GB)
Title: Producing a block-faced concrete slab
IPC: E04C2/04
Filed: 1978-11-01
Abstract: A method of producing slabs or plates of concrete material having an upper surface, in use, of artificial and/or natural stone or ceramics material comprises locating a plurality of flat- surfaced blocks 1 which form the upper surface and one or more lattice-type webs 9 on the base of an expanded plastics material mould 3'' so that the webs separate the blocks but the blocks stand proud of the upper edge of the or each web, filling the gaps between the blocks with quartz sand 6, filling the mould with concrete mortar 7 (with or without reinforcing members 8), allowing the concrete to set, removing the mould and replacing the sand with grouting material. The web or webs 9 are part of or removable from the mould. The concrete 7 may include a resin. <IMAGE>
Patent GB-786250-A (GB)
Abstract: 786,250. Cables; capacitors. STANDARD TELEPHONES & CABLES, Ltd. March 15, 1956, No. 8082/56. Classes 36 and 37. [Also in Groups XXIX and XXXV] A sealed oil-storage device for use with oilfilled condensers or cables comprises a metal disc 2 to the periphery of which an oil-resistant synthetic rubber diaphragm 3 is clamped by a metal annulus 1, a number of the boxes thus formed being held together by bolts 4. Branches from a pipe 5 pass through the discs 2 to the underside of the diaphragms 3. Oil is pumped in to distend the diaphragms to position 7 and the pipe is then connected to the condenser or cable, to or from which oil will flow according to variations in the volume of oil therein. In cable installations the storage device is enclosed within a tank containing gas, the pressure of which is adjustable.
Patent GB-2022716-A (GB)
Title: Method and apparatus for producing electrical power from waves
IPC: E02B9/08
Filed: 1979-01-19
Abstract: A method of obtaining electrical power from waves on a liquid comprises providing on or in a floating vessel a track 12, 14 which is upwardly curved in a vertical plane and along which at least one heavy wagon 10 can roll in response to waves acting on the vessel. The rotation of wheels 16, 18 of the wagon caused thereby is arranged to generate electrical power, e.g. by driving electrical generators 24. Rails 32, 34 cooperate with wheels 28, 30 to prevent tipping-over of the wagon. A linear generator may alternatively be used, the wagon being replaced by an armature sliding on a ferromagnetic track. <IMAGE>
Patent GB-2016795-A (GB)
Title: Isotope separation
IPC: B01D59/34
Filed: 1979-03-12
Abstract: A method of separating an isotope or isotopic compound from a mixture comprising, after cooling the mixture, passing discrete portions of the cooled mixture through an irradiation zone (3) in which each discrete portion is irradiated by a plurality of pulses from laser devices so as to selectively excite one isotope or isotopic compound. An apparatus is also provided comprising a valve (4) and an adiabatic expansion nozzle (2) through which the mixture 46 passes. The valve (4) has a rotor (42) through which allows pulses of the mixture (46) to pass through the nozzle (2) to the irradiation zone (3). <IMAGE>
Patent GB-2046244-A (GB)
Title: Novel diisatoic and triisatoic acid derivatives
IPC: C07C229/54
Filed: 1979-04-10
Abstract: New diisatoic acid and triisatoic acid derivatives of the general formula I   <IMAGE> wherein n represents 2 or 3, X stands for oxygen or sulfur and R for a group of the general formula II   <IMAGE> in which m stands for 1 or 2, Y for B when m is 1 and Y further represents a di- or trivalent alkyl group with 1 to 5 carbon atoms when M is 2, B represents alkylene with 1 to 4 carbon atoms and Z stands for phenylene-1,4-dioxy or diphenylene- 4,4'-dioxy optionally singly or multiply substituted by Cl, NO2 or alkyl or for a 5- to 7-membered heterocyclic ring which is optionally substituted by one or more of said substituents and has one or more atoms selected from N, S and O as members of the ring, with a benzene nucleus optionally being annulated to said ring, are produced by reacting a compound of the general formula III R-(-XH)n   (III> wherein R, X and n have the meaning defined above with at least two equivalents of isatoic acid anhydride, preferably in the presence of strong bases. These new compounds are useful for the preparation of plastics material, in particular polyureas and polyurethanes.
Patent GB-2021980-A (GB)
Title: Application of a film of liquid to a moving strip
IPC: D06B11/00
Filed: 1979-05-29
Abstract: Application of a film of liquid to a moving strip such as, for example, a web (9) of carpet or other textile material, to ensure a substantially complete and uniform cover of the liquid is performed by apparatus which includes an array of multiple openings such as spaced nozzles (14) for emitting respective streams of the liquid towards the strip and flow dispersal means (22) positioned in the path of the streams to receive the liquid issuing from the nozzles and to disperse the individual streams into a substantially uniform film of the liquid for delivery to the moving strip. In one arrangement, the flow dispersal means is an inclined plane (22). In another arrangement, the flow dispersal means comprises the surface of a roller or a combination of a plane and a roller. <IMAGE>
Patent GB-2025034-A (GB)
Title: Apparatus for Use in Throttling Devices
IPC: F15D1/00
Filed: 1979-06-13
Abstract: An air-jet cleaning device (15), for cleaning the fine parallel passages (11) of a throttling member (14) of a ventilation system, has a hollow, divided central shaft (20) and two box-shaped shields (30 and 32) arranged against the inlet and the outlet surfaces of the throttling member (14). The air-jet cleaning device is rotated by a motor or by air impinging on vane 48 to sweep across the surfaces of the throttling member and diverts part of the air flowing through the throttling member in the reverse direction to that of the main flow so that the passages are cleaned by a reverse jet of air. The two air streams (54) flow through the two passages in shaft (20), and dust removed from the throttling member is carried into the main air stream at (56). <IMAGE>
Patent GB-2058183-A (GB)
Title: A Window Frame Assembly
IPC: E06B3/26
Filed: 1979-09-12
Abstract: A multiple-glazed window frame assembly comprising a rigid peripheral frame 10 and a pair of rigid inner frames hingedly attached thereto and capable of movement to open the window in separate stages thus to provide access to each surface of two sheets of glass separated by the rigid inner frames respectively, the peripheral frame being positioned in a wall opening by means of a resilient perimeter strip 50 extending around the outer peripheral surface of the peripheral frame thus to accommodate any irregularities in the wall opening, the overall construction providing thermal and acoustic insulation across the window opening, there being means 57 for fixing the peripheral frame in the wall opening such that distortion of the frame assembly is avoided. <IMAGE>
Patent GB-2032074-A (GB)
Title: Improved aiming system for weapons
IPC: F41G1/34
Filed: 1979-09-19
Abstract: An aiming system for attachment to a weapon having a laser for projecting a beam of light onto a target to assist in aiming the weapon. The aiming system permits the laser to be releasably attached to the firearm by providing a mount which is releasably attached to an adapter secured to the aiming system. To protect the laser 26 from severe recoil shock and to provide a rugged housing which prevents accidental damage or undesired contaminants from damaging the system, the laser is enclosed within a dust-proof housing 24 and connected to a buffer means 28, 30 also carried within the housing. In one embodiment a power supply and a magnetic safety switch are included in the housing. The aiming system further permits easy substitution of interchangeable housings, each enclosing a laser, by providing a mount fixed to the weapon which has a boresight adjustment mechanism that serves to adjust the position of the laser with respect to the barrel of the weapon. <IMAGE>
Patent GB-2031168-A (GB)
Title: A battery testing arrangement
IPC: G01R31/36
Filed: 1979-10-01
Abstract: This operates on the principle that the values of the battery terminal voltage and of the voltage drop at a load-current carrying shunt 6 are converted 8, 9 into digital values and added 11. The total value is multiplied 14 by a digital value dependent 24 on the battery electrolyte temperature and by a digital value dependent 23 on the magnitude of the load current J, to provide an indication 17 of the battery state of charge. Each individual cell 3 of the battery 1 may be separately monitored via multiplexer 26. <IMAGE>
Patent GB-2061154-A (GB)
Title: Gas nozzle arrangement for non- consumable electrode arc welding
IPC: B23K9/167
Filed: 1979-10-25
Abstract: A ceramic nozzle having a central passageway 2 for carrying a non- consumable electrode comprises two groups of inert gas (e.g. argon) passages. The passages of the first group surround and are parallel with respect to the electrode to provide the main supply of gas for blanketing the weld but the passages of the second group diverge to provide an enlarged gas atmosphere which prevents porosity in the weld seam due to oxidation during cooling. As shown, the two groups are concentric with the electrode, the divergent second group passages 4b branching from the first group passages 4a. In a further embodiment, the second group follows the first group along the weld line. Circumferential arc welding of tubes end-to-end, with internal gas purging of the tubes, is disclosed. <IMAGE>
Patent GB-2046556-A (GB)
Title: Telecommunications system incorporating portable communications units
IPC: H04M15/00
Filed: 1979-11-08
Abstract: A telephone system has a plurality of communication terminals and portable communication units for certain users. Each communication unit includes a transmitter and receiver enabling coupling to any of the communication terminals over a short range. In order to make a call the user positions himself within some standard range (e.g. 5 meters) of any one of the communication terminals and then operates his communication unit to gain access to the telephone system by way of the communication terminal. The portable communication unit comprises a push-button dialler, a liquid crystal display and integral earpiece and microphone. Access to the telephone system is gained by ie performing an interactive key code sequence using the communications unit. When access is confirmed by the communication terminal the user keys in the required telephone number and when the call is established the terminal indicates call cost information over the reverse speech link. The unit includes a PROM as a credit meter and the cost information cancels the requisite credit from the memory.
Patent GB-2071564-A (GB)
Title: Improvements in and relating to the manufacture of protective clothing
IPC: B29C65/62
Filed: 1980-01-28
Abstract: A method of forming a seam 10 in two sheets 11, 12 of protective fabric, e.g. nylon fabric coated with polyurethane or siliconized on one surface 11a, 12a, comprises laying a strip 13 of fusible tape, e.g. polyvinyl chloride, so that it embraces the aligned edge portions 11b, 12b of the sheets; sewing the two sheets and the tape together with a single line of stitching 14 extending generally parallel with the aligned edges to leave free tape flaps 15, 16 the tape extending beyond the stitching 14;  folding the sheet 12 and the flap 16 about the line of stitching 14;  folding the flap 15 about the line of stitching 14; and applying energy to the seam to fuse the tape 13 and seal the line of stitching. Fusion of the tape 13 may be by high frequency energy applied by a welding bar 17 having a groove 18 therein or a welding bar comprising two relatively movable sections or by ultrasonic energy. <IMAGE>
Patent GB-2043263-A (GB)
Title: Electrical devices for measuring level, rate of flow or pressure of fluids
IPC: G01D5/24
Filed: 1980-01-30
Abstract: The device comprises an electrodynamic balance constituted by a fulcrum 10, an operating arm 20, and an electromagnet 30. One end of the operating arm 20 receives via rod 54 a force corresponding to the level, rate of flow, or pressure of the fluid perpendicular to the longitudinal axis of the arm 20. The electromagnet 30 and an armature 46 at the other end of the arm 20 form a variable capacitor whose capacitance is used to measure the force. The fulcrum 10 is constituted by a wall 11 which seals the electromagnet 30 and the armature 46 from the fluid. <IMAGE>
Patent GB-2073215-A (GB)
Title: Adhesive Composition
IPC: C09J175/06
Filed: 1980-04-03
Abstract: An adhesive composition comprises a prepolymer of polydiethylene glycol adipate and toluylene diisocyanate, polyisocyanate, trichloroethylphosphate, and a mixture of water, urea, and sodium sulphoricinate in a ratio of 1:(0.01 to 0.3):(0.01 to 0.2) respectively, the components of the adhesive composition being taken in the following amounts, in parts by weight:  prepolymer of polydiethylene glycol adipate and  toluylene diisocyanate 100  polyisocyanate          5 to 30  trichloroethylphosphate 1 to 60  mixture of water, urea, and sodium sulphoricinate  taken in the ratio of, respectively,  1:(0.01 to 0.3):(0.0 1 to 0.2) 0.1 to 2. o
Patent GB-2053220-A (GB)
Title: Penicillin 1,1-dioxides
IPC: A61P31/04
Filed: 1980-07-01
Abstract: Anti-bacterially active penicillin 1,1-dioxides have the formula   <IMAGE>  or are pharmaceutically acceptable salts thereof,  in which  R1 denotes a hydrogen atom or an ester-forming radical, R2 denotes a hydrogen or bromine atom, an optionally substituted alkoxy radical, an optionally substituted alkylthio radical, an azido radical, an optionally substituted alkyl radical, an optionally substituted cycloalkyl radical, an aryl, aralkyl, heterocyclyl or acyl radical or a caboxyl or cyano group and R3 denotes a hydrogen or halogen atom, an azido radical or one of various defined organic radicals. The compounds are also inhibitors of  beta -lactamases so they can be used in conjunction with  beta -lactamase- susceptible antibiotics. They are useful in fighting bacterial infection, in promoting animal growth and preserving various materials.
Patent GB-2059011-A (GB)
Title: Conveyor rollers
IPC: B65G39/09
Filed: 1980-09-05
Abstract: A bearing assembly for a conveyor roller comprises an outer race 26 for engagement in the end of a sleeve body and an inner race 24 which receives a stub shaft 20. A banking plate 60 of the outer race seals off the interior of the sleeve body and a spring 25 acts between the blanking plate and the stub shaft so that the stub shaft which serves to support the roller in a frame member can be depressed against the spring towards the blanking plate to enable the roller to be released from the frame member. <IMAGE>
Patent GB-2061004-A (GB)
Title: Capacitive systems for touch control switching
IPC: H03K17/96
Filed: 1980-09-22
Abstract: In capacitive systems for use in touch responsive switches comprising a dielectric sheet 11 having a first electrode 12 on one side, and on the other side in capacitive relation with the first electrode 12, second and third electrodes 13, 14 which are mutually spaced by a gap 15 the third or outer electrode 14 is shaped to surround at least the major part of the periphery of the second or inner electrode 13, and the ratio of the area of the inner electrode 13 to the area of the outer electrode 14 is greater than 0.25 to 1. <IMAGE>
Patent GB-2086644-A (GB)
Title: Additive for non-aqueous electrochemical cell stability
IPC: H01M6/16
Filed: 1980-10-28
Abstract: A nonaqueous electrochemical cell contains a metal salt additive such as an alkaline earth metal or alkali metal nitrate or nitrite e.g. lithium nitrate (LiNO3) or calcium nitrate Ca(NO3)2 which reduces the reactivity of substantially the entire active cathode surface. Electrolyte solvents such as proplyene carbonate are thereby substantially prevented from reacting, on the surface of the cathode, with oxidizing agents within the cell. Decomposition of the electrolyte solvent with gaseous evolution is substantially reduced and cell stability is enhanced. The metal salt additives are preferably dispersed throughout the cathode and are particularly useful in nonaqueous cells containing manganese dioxide cathodes.
Patent GB-2064998-A (GB)
Title: Racks for centrifuge tubes
IPC: B04B5/04
Filed: 1980-12-01
Abstract: A holding rack for centrifuge tubes, which may be inserted into the pivoted cups of the rotor of a centrifuge and withdrawn for decanting, comprises vertically stackable members 1, 2, 3 formed with recesses for receiving the tubes 11, the members including cutouts 15 which contain elastic securing elements 10 which fill a part of the space of the recesses 16 whereby the tubes are held fast by the gripping action of the elastic elements so that they cannot drop out of the rack accidentally even whilst tipping the latter. <IMAGE>
Patent GB-2067701-A (GB)
Title: Making single threaded nut
IPC: F16B37/00
Filed: 1980-12-12
Abstract: An element e.g. a nut (10a) having a single internal thread is manufactured by molding or casting, in such a way that the beginning (15a) of the thread (11a) is adjacent to one of the thicker portions (14a) of said element. By thus starting the thread at the strongest point of the casting, the strength of the element is substantially increased. <IMAGE>
Patent GB-2068886-A (GB)
Title: Container with a gripping ring
IPC: B65D23/10
Filed: 1981-01-27
Abstract: A container (10) of plastics material has a neck (11) on which a separately manufactured gripping ring (12) of, for example, plastics or cardboard is provided, the gripping ring having an opening which is dimensioned such that the gripping ring may be fixed to the neck (11) and retained by lugs (15, 16) or projecting rings on the neck which abut the gripping ring. The gripping ring may be shrunk on, and is attached either to a blank which is subsequently blow moulded to form the container, or to the already- moulded container. The gripping ring may display information relating to the contents or the "consume by" date. <IMAGE>
Patent GB-2097784-A (GB)
Title: Dihydrobenzotriazepine diones; aminoquinazoline diones
IPC: C07D239/96
Filed: 1981-04-28
Abstract: Anthranilic acid hydrazide reacts with 1,1-carbonyldiimidazole in boiling tetrahydrofuran to afford 3,4-dihydro-1H-1,3,4-benzotriazepine- 2,5-dione. Substituted anthranilic acid hydrazides react similarly to afford substituted 3,4-dihydro-1H- 1,3,4-benzotriazepine-2,5-diones. The products may be thermally isomerised to 3-amino-2,4(1H,3H)- quinazolinediones.
Patent GB-2097673-A (GB)
Title: Antiallergic compositions
IPC: C07C61/08
Filed: 1981-05-06
Abstract: An antiallergic composition comprising, as the effective ingredient, a compound represented by the following general formula   <IMAGE> wherein R is n-butyl group or n-pentyl group, and a topical or internal pharmaceutically acceptable carrier such as sugar, starch, gum arabic or calcium stearate.