baber/WOPTO huggingface dataset:
Patent GB-1150752-A (GB)
Title: Improvements in or relating to the preparation of Potassium Superoxide
IPC: C01B15/043
Filed: 1966-09-20
Abstract: 1,150,752. Alkali-metal peroxides. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. 20 Sept., 1966 [29 Sept., 1965], No. 42032/66. Heading C1A. Potassium superoxide (KO 2 ) is prepared by reacting a solution of hydrogen peroxide at a concentration higher than 50% with solid potassium hydroxide dispersed in an organic medium towards which the reactants are inert and in which they are insoluble at a temperature in the range - 10‹ to + 10‹ C., separating the aqueous from the organic phase and recovering the product from the aqueous phase by atomization and rapid drying at a temperature in the range 100‹ to 400‹ C. The reaction and drying may be carried out in an atmosphere of nitrogen. The organic medium may be CFCl 3  or CCl 4 , the former can be removed by evaporation at a temperature of about 0‹ C., under reduced pressure, or by decantation, the latter by decantation. The drying may be by spraying the solution on to a heated rotating cylinder of glass, zirconium, porcelain or polytetrafluorethylene, and the product scraped from the opposite side of the cylinder.
Patent GB-1400983-A (GB)
Title: Amplifier employing phase controlled thyristors
IPC: H03F3/217
Filed: 1973-09-10
Abstract: 1400983 Transistor amplifying circuits; pulse modulation circuits D M GODLEMENT 10 Sept 1973 42454/73 Headings H3T and H4L In an amplifier of the class D type, the signal to be amplified is applied to the primary of a transformer T101 having two secondary windings a, b and c, d. Rectangular waves are generated by the cross-coupled transistors TR1, TR11 which alternately cause the D.C. amplifiers TR2, TR3 and TR12, TR13 respectively to become conductive. When, e.g. transistor TR11 becomes non-conductive, so do transistors TR12, TR13 whereby transistors TR19, TR20 are turned off: turning off of transistor TR20 opens the path between the earth line and the -100V. line via TR20, the A.F. output path and thyristor SCR18, and also via diode D95 removes an inhibit from transistor TR9. Transistors TR1, TR2, TR3, TR4 now being conductive, transistors TR9, TR10 are also conductive and the path via transistor TR10, the A.F. output path and thyristor SCR8 is complete when the latter is turned on. Diode D83 and transistor TR4 form a constant current source the output of which feeds capacitor C22: the greater the current, as determined by the instantaneous signal voltage at terminals a, b, the sooner capacitor C22 is charged to a predetermined level which fires programmable unijunction transistor PUTS. Conduction in transistor PUT5 causes transistors TR6, TR7 to become conductive, so firing thyristor SCR8 and completing the path through the A.F. output terminals.
Patent GB-981693-A (GB)
Title: Improvements relating to the catalytic isomerisation of olefinic hydrocarbons
IPC: B01J27/13
Filed: 1961-11-29
Abstract: Olefinic hydrocarbons are isomerized by contacting the olefin with a catalyst obtained by contacting a halogenatable inorganic oxide with an alkali or alkaline earth metal compound so that alkali or alkaline earth metal is retained by the oxide and either before or after said contacting the oxide is contacted with a fluorine containing compound so that fluorine is also retained by the oxide (see Specification 981,692). The catalyst may also contain a minor amount of a metal or metal compound selected from Group VIa and VIII.  Isomerizations specified are 4- and/or 2-methylpentene-1 to 2-methylpentene-2, 2- and/or 3-methylbutene-1 to 2-methylbutene-2, and pentene-1 to cis and transpentene-2. Temperature of ambient to 300 DEG  C. may be employed and a carrier gas, e.g. nitrogen, may be used.
Patent GB-1384579-A (GB)
Title: Image reproduction apparatus
IPC: G03B27/06
Filed: 1972-09-14
Abstract: 1384579 Contact printing E I DU PONT DE NEMOURS & CO 14 Sept 1972 [17 Sept 1971] 42762/72 Heading G2A In a method of contact printing, a photo-resist element and a transparency are held in an exposure frame comprising one or a pair of transparent plates and registration pins and are passed through a stationary exposure unit comprising a source of radiation and two sets of spaced wheels carried by pressure frame members urged together by air pistons. The photo-resist element may be in web or discrete form. In the former case, the element may consist of a receptor laminated on one or both sides to supported photo-resist material. In a single-sided exposure frame, a compressible foam material may be disposed on the non-exposure side. In a double-sided exposure frame, the pair of transparent plates may be held together (before passage between the wheels) magnetically at both sides, or at one side the other side being hinged. As shown, a copper-plated board B is fed continuously to laminating rolls 1 and 1' between webs S/R of supported resist material, a frame 10 (shown in more detail in Figs. 3-5) is attached manually, and the assembly is passed through an exposure unit 3 comprising pressure frame members 54 and 52, each carrying a set of wheels 101  spaced so as to provide uniform exposure, the lower member being fixed and the upper member being urged thereto by air cylinders 64. The exposed material is passed finally through delaminating rolls 2 and 2'. (For figure see next page)
Patent GB-1409780-A (GB)
Title: Safety device for the passengers of a vehicle
IPC: B60R22/04
Filed: 1973-09-12
Abstract: 1409780 Vehicle seat belts VOLKSWAGENWERK AG 12 Sept 1973 [29 Sept 1972] 42813/73 Heading A3V [Also in Division B7]  A vehicle occupant restraint comprises the comibination of a diagonal belt 6 and an energy absorbing member 12 provided on the vehicle frame 3 in the region of the occupant's knees. The member 12 comprises plates 13 and 14 connected by a deformable member 15, the plate 13 carrying padding 16 of hard foam. The member 15 comprises metal segments 20 and 21 inclined at an angle of approximately 60‹ to the plates 13 and 14. The belt 6 is attached at one end to 9 to a door 10 and is wound on a spool 7 at the other, the spool being provided, in known manner, with a locking device operative upon occurance of strong inertia forces to prevent unwinding of the belt.
Patent GB-1089216-A (GB)
Title: Rotary fluid pumps,compressors and motors
IPC: F04C2/356
Filed: 1964-10-21
Abstract: 1,089,216. Rotary engines. F.M. ANGULO. Oct. 21, 1964 [Oct. 21, 1963], No. 42836/64. Heading F1F. A rotary engine, which is capable of operating as a pump, a compressor or a fluid-driven motor, comprises a casing 1 defining an annular chamber 8' containing a radial vane 2 that is attached to a rotor 2' carried by a driving, or power-output, shaft 13, which also carries externally of the casing a ring 26 whereon pairs of projections 11, 12 and 6, 7 are mounted so as to periodically actuate two diametrally-opposed pairs of rotary valve-members 8k, 81, 8m, 8n and two diametrallyopposed rockable-abutments 3x, 3y for the vane, respectively, when the rotor rotates. Each of the valve-members is coupled by a shaft 32 to a cruciform armature 9 carrying a roller 10 on each of its arms and each of the abutments is coupled by a shaft 31 to a pair of arms 33 carrying rollers 5. When the engine is operated as a motor the abutment 3x is in a closed position while working- fluid is fed into the chamber 8' past the valvemember 8k by way of a conduit 36 so as to drive the vane 2 in an anti-clockwise direction according to Fig. 1., the abutment 3y being in an open position while the valve-members 8l, 8n are in a closed position and the valve-member 8m is in an open position to permit discharge of spent working- fluid from said chamber. As the vane approaches the valve-member 8m, one of the adjacent projections 11, 12 engages with one of the rollers 10 to move this valve-member to a closed position while the valve-member 8l is moved to an open position by a similar action, the abutment 3y being moved to an open position by one of the projections 6, 7 while the other abutment is moved to a closed position by a corresponding action. Working-fluid then enters the chamber 8' past the valve-member 8m while spent working-fluid is ejected past the valve-member 8l as the vane undergoes further displacement in an anti-clockwise direction. During the remainder of the revolution of the rotor the valve-members and the abutments undergo a similar sequence of operations. The projections 6, 7, 11, 12 are secured to the ring 26 by bolts 29 engaging with arcuate slots 28 in the ring that are of sufficient length to permit adjustment of the circumferential positions of the projections. In an alternative embodiment, Fig. 3 (not shown), inlet passages 18, 21 for working-fluid are controlled by abutments (3a, 3b), which are similar to the abutments 3x, 3y, outlet passages (19, 20) being controlled by valve-members 8a, 8b that are similar to the valve-members in the embodiment according to Figs. 1 and 2. The engine may include more than one radial vane on the rotor.
Patent GB-1065489-A (GB)
Title: Apparatus for determining drape of flexible materials
IPC: G01N11/02
Filed: 1965-10-11
Abstract: 1,065,489. Determining drape properties. CLUETT, PEABODY & CO. Inc. Oct.11, 1965 [Oct.21, 1964], No.42945/65. Heading G1S. An apparatus for determining the drape characteristics of flexible materials comprises means for drawing a sample 5 of the material through an aperture 14 of a size such as to allow but offer resistance to, the passage of the material, and means 11 for measuring the forces resisting the passage of the material through the aperture. In the embodiment described the sample is mounted on a pedestal 15 connected to one end of a rod 12, the other end of the rod 12 having a force transducer 11 which is in turn connected to a movable head 9. As the head is moved upwards, the rod 12 with the sample 5 moves upwards through an aperture 14 in a ring 13 and the forces on the sample caused by opposition to movement from the ring 13 are sensed by the transducer. The force transducer is connected to an indicating device which records all forces on the sample as it moves through the aperture. Just after engagement the force on the sample reaches a maximum value, termed the break point and about half-way through the aperture a second maximum which is lower than the first and is termed the 'drawpoint.' It is stated that the force at the break point is directly related to the physical properties of the material under test. In another embodiment the force transducer is connected to the apertured ring to give a measure of the force on the ring due to the sample.
Patent GB-1342975-A (GB)
Title: Closure means for containers
IPC: B29C45/14
Filed: 1971-09-15
Abstract: 1342975 Injection moulding of container closures TAKEDA YAKUHIN KOGYO KK 15 Sept 1971 [16 Sept 1970] 43000/71 Heading B5A [Also in Division B8] A pierceable closure member 5 for a storage vessel Fig. 2, (not shown), is made by transfer moulding, the stages of manufacture involving treating the upper surface of a film 8 with sodium containing solution to produce a rough surface, placing the film in annular grooves 10 of mould A and applying pressure to a ram C so that rubber contained in a reservoir 12 is forced through passages 13 into the cavities 11. Following the vulcanization of the rubber, the ram C and moulds A and B are separated and the closure members 5 are removed.
Patent GB-1005203-A (GB)
Title: Improvements relating to the production of foamed products
IPC: C08J9/10
Filed: 1962-11-14
Abstract: Stable cellular products are made by exposing to free oxygen a composition comprising a monomer containing a CH2=C< group of molecular weight greater than 50, an aluminium alkyl compound of the formula <FORM:1005203/C3/1> where R is an alkyl group, and R1 is hydrogen, halogen, or an alkyl group, at least 0.05% by weight of 2,21-azo-bis-[isobutyro-nitrile], and at least one multifunctional unsaturated monomer.  The vinylidene monomer may be methyl, ethyl, or propyl acrylate, methyl methacrylate, vinyl acetate, propionate, or stearate, vinyl-2-methoxy ethyl ether, vinyl-2-chloroethyl ether, acrylonitrile, or methacrylonitrile. The aluminium compound is preferably used as a complex with a saturated or unsaturated monocarboxylic ester such as ethyl acetate or propionate, vinyl acetate, ethyl or butyl acrylate, or methyl methacrylate. The complex, in the absence of oxygen, may be preformed and mixed with the monomer.  Specified aluminium compounds are triethyl, triisobutyl, trioctyl aluminium, diethyl aluminium chloride, and diethyl or di-isobutyl aluminium hydride. The composition may also contain fillers such as clay, calcium carbonate, ground polymethyl methacrylate, silica, pigments such as metallic powder, and carbon black, plasticizers and thickeners.  The 2,21-azo-bis-[isobutyronitrile] functions as a blowing agent in the temperature range of 60-70 DEG  C.  The multifunctional unsaturated monomer may be triallyl cyanurate, diallyl itaconate, triallyl aconitate, diallyl oxalate, allyl acrylate or allyl methacrylated. In making the composition the isobutyronitrile is generally mixed with the multifunctional monomer.  Specification 1,005,202 is referred to.
Patent GB-1447191-A (GB)
Title: British-american tobacco co ld filter tips
IPC: A24D3/04
Filed: 1974-10-04
Abstract: 1447191 Ventilated cigarette tips BRITISHAMERICAN TOBACCO CO Ltd 4 Oct 1974 [9 Oct 1973] 43202/74 Heading A2C A process of making a ventilated filter tip for smoking material comprises wrapping an inherently porous plug wrap about a rod of filter material, wrapping an inherently porous tipping paper about said porous plug wrap, and adhering the tipping paper to the plug wrap by a multiplicity of randomly positioned, non porous, discrete areas of adhesive, the areas having an average diametrical dimension of between 100-500 microns (Œ 10%) and an average thickness of 5-19 microns (Œ 10%). Fig. 1 shows cigarette 10 consisting of tobacco rod 11 and filter rod 12, the latter comprising paper or cellulose acetate. Plug wrap 13 surrounds rod 12 and is inherently porous having an air-flow rate under a head of one inch water gauge of 3-18 cc/sec. Plug wrap 13 is adhered to tipping paper 14 which is also inherently porous. Tipping paper 14 encloses both rods 11, 12. A multiplicity of adhesive lakes 17 whose sizes are exaggerated are positioned on wrap 13. The area indicated generally at 18 permits passage of air through plug wrap 13 and tipping paper 14.
Patent GB-1536080-A (GB)
Title: Change-speed transmission
IPC: F16H3/66
Filed: 1977-10-18
Abstract: 1536080 Epicyclic change - speed gear NISSAN MOTOR CO Ltd 18 Oct 1977 [13 Dec 1976] 43347/77 Heading F2D A change-speed gear providing four forward ratios, of which fourth is an overdrive ratio, and reverse, has, following a torque converter, three planetary gear trains 10, 12 and 20, train 20 having intermeshed planets 24, 26. The carrier C3 of train 20 is fixed to the carrier C1 of train 10, the sun S2 of train 12 is fixed to the sun S1 of train 10 via a shaft 18 and the carrier C2 of train 12 is fixed to the ring gear R3 of train 20. The sun S3 of train 20 is permanently fixed to the input shaft 32 and the ring gear R2 of train 12 is fixed to the output shaft 34. A brake B1 may hold the sun gears S1 and S2 stationary. A clutch K2 selectively connects the input shaft to the ring gear R1 of gear train 10. A clutch K3 connects ring gear R1 to sun S1 or alternatively to carrier C1 or it connects carrier C1 and sun S1, Figs. 4 and 5 (not shown). A brake B2 selectively holds the carrier C2 and ring gear R3. The gear arrangement shown ensures that in the first three forward ratios no element rotates faster than the input shaft. Clutch K1, between input 34 and shaft 18, is used for reverse.
Patent GB-1524830-A (GB)
Title: Flow measurement apparatus
IPC: G01F1/66
Filed: 1976-10-19
Abstract: 1524830 Apparatus for producing stationary interference fringes BRITISH AIRCRAFT CORP Ltd 19 Oct 1976 [24 Oct 1975] 43696/75 Heading G2J [Also in Division H4] Apparatus for producing a stationary interference pattern of fringes comprises a coherent light source 11, means 13-15 for extending a light beam 10 therefrom a predetermined amount in one direction normal to the axis of the beam, means 16 to convert the beam into at least three substantially parallel beams 18, and means 19 to focus these beams down to a line of interference fringes or spots 20. The apparatus may comprise cylindrical lenses 13, 14 (or alternatively an astigmatic lens) and a collimating lens 15 to produce the extended beam 12, a beam-splitter 16 and a Fourier lens 19. The beamsplitter may be a glass slab having aluminium coatings 17a (which totally reflects light incident from within the beam-splitter) and 17b (having varying transmission/reflection properties such that beams 18' are of equal intensity); alternatively a slotted mask or a series of plates may be used. It is stated that this arrangement produces a probe volume of smaller dimensions and provides fringes of increased contrast compared with the conventional two-beam anemometer. Light scattered by particles crossing the fringe pattern may be detected by means of a focusing lens and a photo-multiplier tube. The signal-tonoise ratio may be increased by controlled seeding of the flow with aerosol particles, and by providing a mask having an aperture in the shape of the probe volume placed in the image plane of the lens.
Patent GB-1438369-A (GB)
Title: Apparatus for the automatic production of sparking plugs for internal combustion'ngines
IPC: H01T13/00
Filed: 1973-09-18
Abstract: 1438369 Metering powders AUTOMATISME ET TECHNIQUE 18 Sept 1973 [22 Sept 1972] 43745/73 Heading B8N [Also in Divisions B3 B5 and C1] A device for supplying a measured quantity of powder from a hopper 11.11 to a mould 11.104 supported on a rotatable drum comprises a fixed tray 11.101 having an aperture 11.102 and trays 11.16 and 11.17 which rotate with the drum. In use, powder from the hopper 11.11 falls into a metering chamber formed by rings 11.18, 11.19 in the trays 11.16, 11.17 when the rings are located beneath the hopper outlet, and as the trays are rotated by the drum the bottom edge of the hopper wipes across the top of the ring 11.18 before the rings come above the aperture 11.102 in the tray 11.101 to allow the measured quantity to fall into a tube 11.103 and thence to the mould 11.104. The hopper 11.11, tray 11, 16 and ring 11.18 are vertically adjustable to vary the quantity measured.
Patent GB-966990-A (GB)
Title: Improvement to screw position control in rolling mills
Inventor: LUDBROOK LESLIE CARTER
IPC: B21B37/60
Filed: 1961-12-06
Abstract: 966,990. Automatic thickness control systems. STEELWORKS AUTOMATION Ltd. Nov.26, 1962 [Dec. 6, 1961], No. 43771/61. Heading G3R. The invention relates to a servo positioning system for the screw-down in rolling mills, and provides for corrections introduced by the operators manual control, and an automatic gauge control. As shown Fig. 2, a synchro link S1, S2 supplies a control signal to motor M1 through amplifier A1 to drive the screws into correspondence with the position indicator 1234. Differential synchro S3 provides for zero adjustment (i.e. zero gap corresponds to zero position of S1). Operators control. During rolling, operators ' override the servo system directly controlling the screw-motor to provide rapid correction for e.g. roll wear, or thermal expansion. The resulting error signal from S2 is fed back over switch SW1 down to amplifier A2 and motor M2 to realign synchro S1 with S2, thus incorporating the operators corrections in the system. A. G. C. When the mill is operating with automatic gauge control of the thickness, the A. G. C. corrections are not required to be retained in the system after each item has been rolled. To this end, the A. G. C. corrections as indicated by the error signal from S2 are "recorded" in a further synchro S4, so that the combined output of S2 and S4 is zero. Thus when a manual correction, which is retained in the system, is to be made to alter the angular position of M2 and S2, SW1 is set to the upper position. The A. G. C. signal shift of S2 is cancelled by the output of S4, and only the operators correction is transferred to S1. After rolling each item S2 is connected to M1 to reset the screws to their initial position plus the operators modifications, while S4 is connected to A3 and resets itself to zero.
Patent GB-1519837-A (GB)
Title: Scraper-chain conveyors
IPC: E21F13/06
Filed: 1975-10-24
Abstract: 1519837 Conveyer fan connectors GEWERKSCHAFT EISENHUTTE WESTFALIA 24 Oct 1975 [19 Dec 1974] 43805/75 Heading B8A - . A scraper chain conveyer for mines comprises channel section pans 10, spacers 19 to form chain guide passages 20, 21, within a cover 18 and spillplates 16. Threaded members 15 with nuts 46 hold the parts 10, 16, 19, 18 together. An insert 31 is welded at 32 into a cut-out in the plate 16 and has a projection 33 forming shallow grooves 35 to receive a locking element 34 which connects the pans 10 to prevent longitudinal displacement while allowing the principally vertical movement. The spacers 19 comprise strips 26, 27 with cross-pieces 28 welded therebetween and extensions 37 formed with recesses 38 having edges 39, 40 to correspond with end face 36 of the projections 33 to thus retain the elements 34. Guides and deflectors 41 are formed at least at the top of the projections 33 and have a hook-like part 44 to restrain vertical movement of the elements 34 d inclined faces 41, 42 to deflect the chain at least in the passage 20 outwardly and downwardly towards the spacers 19 and away from the projections 33 and elements 34.
Patent GB-1263129-A (GB)
Title: Projector with automatic focussing arrangement
Inventor: TURL ALAN FRANCIS
IPC: G03B21/53
Filed: 1969-09-05
Abstract: 1,263,129. Photo-electric projector focus control. RANK ORGANISATION Ltd. May 20, 1970 [Sept. 5, 1969], No.44077/69. Heading GlA. In a projector in which a transparency 1 or the objective 2 is automatically positioned for correct focus a pattern of light of cyclic waveform other than square wave is moved across the plane, of a transparency in a direction at right angles to the plane containing the incident beam and the specularly reflected beam and the signal developed by a photosensitive device viewing a small area of the moving pattern is used to control the correcting servo. A moving saw tooth pattern Fig.2 (not shown) is produced by a rotating toothed disc 4 in the beam from a source 5 and the level of the waveform at which the sensitive field of the detector is traversed, is determined by the position of the plane of the transparency producing pulses of more positive or more negative duration, as demonstrated in Figs.4-6 (not shown) according to whether the transparency is in front of or behind the focal plane. The objective, source, and sensor may be on a common assembly and may be driven by a cam 16. Suitable transistor amplifying and detecting circuitry using an integrator to produce a positive going pulse-negative going pulse signal is described and a focusing suppression switch is included for actuation during transparency change.
Patent GB-1110484-A (GB)
Title: Water feed device for use with plant pots
IPC: A01G27/04
Filed: 1966-10-19
Abstract: 1,110,484. Watering plants. H. O. W. EGGINS. 17 Oct., 1966 [19 Oct., 1965], No. 44133/65. Heading A1E. A device for feeding water into plant pots comprises a wire 1 of aluminium or other non-oxidizable metal looped at 4 and a flexible woven fibre glass sleeve 2 clamped thereon. Water is drawn, in use, into a pot via an aperture in its bottom, by the capillarity of the material of the sleeve.