baber/WOPTO huggingface dataset:
Patent GB-1361576-A (GB)
Title: Hand knitting device
IPC: D04B39/00
Filed: 1972-10-25
Abstract: 1361576 Hand knitting L RICHARDSON 25 Oct 1972 [29 Nov 1971] 49165/72 Heading D1C A hand knitting device comprises a series of sliding tongue needles 20 mounted in a bed 10 so that the bodies are immovable longitudinally but are slidable laterally. The needles comprise a hooked body 22 having a bore 28 which receives the tongue 34, which may be spring loaded. The tongue can be moved relative to the body by a pivoted element 50, and locked in a closed position by engaging catches 30, 54. The needles have a circular end portion 24 which engages channel 12 so that the needles can slide laterally. Needle bed sections may be joined by mating apertures 19 and projections 17 and secured by a pin 62 engaged bored lugs 18. Sections may be straight or arcuate. In use a row of manually formed loops are placed on the enlarged portions 32 of the needles. A yarn is placed in the open hooks. Needles are closed, slid sideways if necessary; the old loops cast off, and new ones slipped over portions 32 and the cycle repeated.
Patent GB-1080559-A (GB)
Title: Improvements in or relating to transistor oscillator circuits
Inventor: JOHNSON ALBERT HENRY
IPC: H03B5/12
Filed: 1964-12-04
Abstract: 1,080,559. Transistor oscillating circuits; frequency modulation. MINISTER OF TECHNOLOGY. Dec. 3, 1965 [Dec. 4, 1964]. No. 49444/64. Headings H3R and H3T. A transistor oscillator comprises two transistors T1, T2 with a common emitter circuit resistor R3, the base circuit of transistor T2 comprising a tuned circuit L3, C4 to which the collector of transistor T1 is back-coupled by means of choke L1 and capacitor C1. Transistor T3 forms with transistor T2 a pair in cascode amplifier connection, an output being taken from the collector circuit of transistor T3 via transformer L2. The arrangement may be frequency modulated by means of a varactor diode connected across the tuned circuit L3, C4 (Fig. 2, not shown) the modulating voltage being applied to the capacitor via a choke.
Patent GB-1309120-A (GB)
Title: Voltage stabilishing circuits
IPC: G05F1/20
Filed: 1970-10-19
Abstract: 1309120 Automatic voltage control SIEMENS AG 19 Oct 1970 [20 Oct 1969] 49515/70 Heading G3R An A.C. voltage stabilizer comprises a transformer TR1 whose primary winding has one end connected to an input terminal R of an A. C. supply and a plurality of taps AI--AN connected through repective bi-polar semi-conductor controlled rectifiers (TRIACS) SI--SN to the other terminal MP of the supply, the TRIACS SI--SN being controlled by an analyser circuit AW which is responsive to the supply voltage to vary the number of winding turns connected thereto to compensate for variations of the supply voltage and which operates the TRIACS to change the selected tap at an instant at which the TRIAC current passes through zero. The circuit AW comprises a measuring section M having a transformer TR2 whose primary winding is connected to terminals R, MP, a zero intersection indicator NI for producing a signal when the current in the winding TRI and TRIAC passes through zero, and a control section ST which supplies firing signals to the TRIACS SI--SN in accordance with signals from the sections M and NI. The section M includes a rectifier circuit whose output is taken through respective voltage dividers to the inputs of associated differential amplifiers which number one less than the number of TRIACS SI--SN and which have staggered threshold levels so that the number of amplifiers responding to each rise of the input voltage following its passage through zero depends on the peak amplitude of the input voltage. The control section ST selects one of the TRIACS SI--SN to be closed according to the signals appearing on output lines LI--LN determined by the number of differential amplifiers that have responded, each line LI--LN being associated with a respective bi-stable trigger stage in the section ST. These stages are connected to a logic circuit which determines, from the number of stages set up, the desired TRIAC to be fired and selects the trigger stage thereof. The firing signal is produced when a signal is supplied from the section NI indicating passage of the current through zero. The latter section comprises an inverted switching amplifier which produces a signal when the current passes through zero and has two inputs connected through resistors and diodes to a positive supply VL from the section M, to the terminal MP and to the centre-tapped  secondary winding of a current transformer SW, Fig. 2 (not shown). The supply for the sections of the analyser AW may be obtained from a secondary winding of the transformer TRI, members R5, ZD1, ZD2 being provided for this modification to close the TRIAC SN when the stabilizer is switched on. Alternatively this secondary winding can replace the transformer TR2, with a compensating circuit provided in the section ST. Application of the invention to a three phase supply is envisaged.
Patent GB-1399390-A (GB)
Title: Catalyst purging technique
IPC: B01J21/20
Filed: 1972-10-27
Abstract: 1399390 Hydrocracking; reforming UNIVERSAL OIL PRODUCTS CO 27 Oct 1972 [29 Oct 1971] 49634/72 Heading C5E [Also in Division B1] In a hydrocarbon conversion process wherein catalyst is periodically removed from the reaction zone for regenration, the catalyst is purged prior to regeneration to remove volatile materials, e.g. hydrocarbons such as naphtha or hydrogen, by (i) passing into a purging zone at a predetermined lower pressure, e.g. atmospheric, (ii) contacting with a gaseous medium e.g. nitrogen or an inert gas which is passed into the purging zone whilst venting gaseous medium and volatile materials and such a rate as to increase the pressure in the zone to a predetermined higher pressure, e.g. 12-15 p.s.i.g., and (iii) at the higher pressure, stopping inflow of gaseous medium whilst continuing to vent the gaseous medium and purged volatile material to return the pressure to the lower value. The sequence may be repeated 1 to 6 times. The treatment of a platinum, rhenium, halogen or alumina catalyst is described. Specified conversion processes are reforming, hydrocracking, hydrogenation, dehydrogenation, dealkylation and desulphurization. The exemplified process is reforming at 700-1100‹ F., 50-1000 p.s.i.g., a LHSV of 0À2-10 and a hydrogen to hydrocarbon mole ratio of 1 : 1 to 10 : 1.
Patent GB-1411277-A (GB)
Title: Annealing furnace seal
IPC: C21D9/673
Filed: 1972-10-27
Abstract: 1411277 Annealing furnace seals USS ENGS & CONSULTANTS Inc 27 Oct 1972 [28 Oct 1971] 49745/72 Heading F4B A seal 20 for an annealing furnace resting on the bottom of a trough formed by walls 12, 14 and engaged by the edge 8 of the cover 6 of the furnace, comprises a flexible tube of stainless steel mesh filled with a ceramic woven fibre blanket 24. The blanket may be rolled as shown or folded into a series of flat layers. Other layers of blanket 30 may be provided on the bottom of the trough.
Patent GB-1222670-A (GB)
Title: Coupling members for tractor-implement hitches
IPC: A01B59/06
Filed: 1968-10-21
Abstract: 1,222,670. Tractor-implement hitches. MASSEY-FERGUSON Inc. 21 Oct., 1968 [26 Oct., 1967], No. 49806/68. Heading A1P. A coupling apparatus for connecting a Category II implement to a Category I tractor - three point hitch (or vice versa) consists of a cross-member 18, an upright mast 20 comprising plates 22 and 24 fixed on to the member 18, an attachment unit 30 on each end of the member 18 and comprising three plates 34, 36 and 38, a link 62 to connect the implement upper-link to the mast 20, two hitch links 100 to connect the implement lower links to the units 30, and the connecting pins 76, 88, 74 and 94, the pins 94 and 88 being stepped as shown. Smaller holes 52, 54, 84, 86, 72 and 102 are Category I holes and the bigger ones, i.e. 56, 58, 80, 82, 70 and 104, are Category II holes. The Category II implement links are connected (by pins not shown) at 104 and by pin 74 at 70, both links 100 are connected at the holes 102 to the units 30 with pins 88, such that Category I portions 92 of the pins engage the holes 102 and the link 62 is connected to mast 20 at holes 52 by a pin 76. The tractor lower hitch links 8 are connected to the units 30 between plates 34, 36 by the pin 94 and the upper hitch link 6 is connected to the mast 20 at holes 54. By selecting proper holes, an implement of one Category can be connected to a tractor of the same or different Category. For a Category I implement, holes 102 and 72 of the links 100 and 62 will be connected to the implement links.
Patent GB-1054049-A (GB)
IPC: C22C27/02
Abstract: 1,054,049. Tantalum base alloys. NATIONAL RESEARCH CORPORATION. Dec.17, 1963 [Dec.17, 1962], No.49822/63. Heading C7A. A tantalum alloy consisting of the balance, apart from impurities, being tantalum, has an A. S. T. M. grain size greater than 3 when the cold worked alloy is heated to 3700‹ F. for one hour. The alloys, which may be used for filaments or electrode leads, are made by conventional melting and casting techniques (e.g. consumable electrode arc melting of a sintered body of metallic powders) and may be vacuum annealed at 1900‹ - 4000 ‹ F.
Patent GB-1132858-A (GB)
Title: Gas charged liquid dispensing container
Inventor: CHEELEY WILLIAM EDWARD
IPC: B67D1/08
Filed: 1965-11-26
Abstract: 1,132,858. Pressurized dispensing containers. REYNOLDS METALS CO. Nov. 26, 1965, No. 50425/65. Heading F1R. A gas pressure supply container 16 is supported by its bottom in a liquid container 10 and is connected at its top by a bracing member 96 to a gas pressure filled capsule 54 having a diaphragm bottom 50, subjected to the pressure in the liquid container and controlling the outlet valve 22 from the container 16. The capsule 54 has a self sealing charging valve 62. The liquid container has a sealed outlet 66 which is broken on attachment of the outlet pipe 86.
Patent GB-1160599-A (GB)
Title: Improvements in and relating to Linear and Logarithmic Electronic Circuit Arrangements
Inventor: WEILL JACKY
IPC: G01T1/17
Filed: 1967-11-07
Abstract: 1,160,599. Radiation detector circuits. COMMISSARIAT A L'ENERGIE ATOMIQUE. Nov. 7, 1967 [Nov. 7, 1966], No.50549/67. Heading G1A. [Also in Division G4] An electronic circuit providing simultaneous first and second output voltages respectively linearly and logarithmically related to an input current, e.g. from a detector D of a nuclear reactor, comprises amplifier A having cathodic negative feedback through logarithmic diode d in series with resistor R 2 ; an inverter amplifier B receiving the resistor voltage and inverting it as output V 1 , while the resistor and diode voltage is combined with inverted V 1  in amplifier C to produce a logarithmic voltage as output V 3 . The outputs may operate triggers, and three similar circuits may operate "two out of three" devices connected to the respective linear and logarithmic outputs.
Patent GB-1161063-A (GB)
Title: Display Devices and Method of Producing a Display.
Inventor: HELLER FRITZ PETER
IPC: H01J29/89
Filed: 1965-11-30
Abstract: 1,161,063. Maps. ELLIOTT BROS. (LONDON) Ltd. 30 Nov., 1966 [30 Nov., 1965], No. 50716/65. Heading G5G. [Also in Divisions G2 and H4] A display device for use in an aircraft comprises a cathode-ray tube on whose screen 13 both optically and electronically produced images can be simultaneously viewed in-superposition, the tube 11 having an optical window 15 in a rear wall through which projector 16 directs images on to screen 13. The device may be used for " head-down " display in an aircraft of navigational information, in which case map images are projected from film in container 18. The film is carried on spools (30, 32), Fig. 2 (not shown), mounted in a frame (20) which may be shifted laterally by rack and pinions (34, 34<SP>1</SP>) and (36, 36<SP>1</SP>), and rotated by ring gear (38) in response to the aircraft position and orientation. These movements and longitudinal motion through the spools are in response to separate computer-controlled drive motors.
Patent GB-1071297-A (GB)
Title: Dielectric masses employing spiral modules
IPC: H01Q15/08
Filed: 1963-12-24
Abstract: 1,071,297. Laminates. ARMSTRONG CORK CO. Dec. 24, 1963 [Dec. 28, 1962], No. 50992/63. Heading B5N. [Also in Division H4] A method of constructing a cylindrical disctype dielectric lens in which the dielectric constant varies radially in a predetermined manner consists in fabricating a ribbon of dielectric material such as polystyrene beads, having a predetermined linear variation of dielectric constant, and then coiling it into a spiral with or without a core of dielectric material (Fig. 2, not shown). Two or more ribbons may be wound together, to make a bigger disc, their inner ends being equi-spaced around 360 degrees (Figs. 5A, 6B, not shown). The ribbons may be fabricated by peeling down monolithic bodies of dielectric material containing either a mixture of different dielectric or a mixture of a dielectric and metallic particles and made as described in United States Specification 3,274,668. The variations of dielectric constant along the lengths of the ribbons may be checked by running them through an admittance meter or other testing means (Fig. 4, not shown) when the manufacture of the bodies may be controlled, and corrections made when winding the spirals. A disc in which the dielectric constant at radius r equals (2 - r<SP>2</SP>/R<SP>2</SP>), where R is the outside radius, may be used as a two-dimensional Luneberg lens, being placed between two parallel conductive plates and fed at its periphery by an electromagnetic horn (Fig. 1, not shown). A spherical Luneberg lens may be built up starting with full size discs (40), Fig. 7, and adding discs (41), (42), (43), (44) of diminishing diameters on both sides, to approximate a circular cross-section. Each disc is made from a ribbon of the same kind, an appropriate length of the end of higher dielectric constant being removed for each disc of reduced size. The discs may be cemented together, or held together by external taping, or be contained in an outer shell.
Patent GB-1072236-A (GB)
Title: Process for forming a pile on an article
IPC: B29C44/56
Filed: 1963-12-27
Abstract: Articles or sheet material, having pile surfaces are formed by pressing the article against a surface having cavities so shaped that the material entering them is formed into a stem having an enlarged free end.  The article is then removed from the surface so that the enlarged free ends jam in the cavities and each stem is stretched and thus molecularly oriented.  The enlarged free ends may be retained upon the pile or may be removed.  The surface may be a wire gauze, a belt of sintered material, or a belt having punched cavities, the article being pressed there against by passage between rollers (see Figures 3 and 4 not shown).  The articles may comprise a laminated sheet having a substrate of paper or woven or non-woven fabric and a surface layer, which may be foamed, of partially regenerated cellulose acetate, polyvinyl chloride, incompletely vulcanised rubber, or incompletely-cured thermosetting resin.  Two sheets made by the above process may be stuck together pile surface to pile surface, smooth surface to smooth surface, or smooth surface to pile surface.  In one embodiment plastic material is sprayed onto a forming surface and the resultant sheet is backed with e.g. a textile layer whilst pressing it into the forming surface, the composite subsequently being stripped from the forming surface.  The pile formed may be flattened to some extent, usually by a roller, whilst it is still deformable, to make some pile projections adhere.  This gives the product the appearance of a non-woven fabric.
Patent GB-1457960-A (GB)
Title: Quadrupole mass spectrometer
IPC: H01J49/42
Filed: 1974-11-26
Abstract: 1457960 Ion sources for mass spectrometers URANIT URAN-ISOTOPENTRENNUNGSGmbH 26 Nov 1974 [13 Dec 1973] 51110/74 Heading H1D An ion source for a quadripole mass spectrometer comprises a molecular beam injector 6 for introducing the substance to be analysed into an ionisation region 4 where it is partially ionised by electrons from a cathode 1, the ions being extracted to the spectrometer section 9 and the remaining molecules being collected by a cryopump 5a disposed diametrically opposite the injector 6. A further cryopump 5b can surround the injector 6. The spectrometer and ion source are enclosed in a housing 13 evacuable by a system 14. The gas, e.g. UF 6 , under analysis is introduced from an inlet system 12 comprising a large volume reservoir 20 holding the gas at 0À3 Torr. Excess gas is collected in a trap 23 when the reservoir 20 is evacuated by pumps 26a, 26b. The injector 6 can be made of polytrifluorochloroethylene, polytetrafluoroethylene, or aluminium oxide with a conductive coating near the outlet.
Patent GB-1476635-A (GB)
Title: Conveyors
IPC: A21C15/00
Filed: 1973-11-05
Abstract: 1476635 Endless-chain conveyers J LYONS & CO Ltd 29 Oct 1974 [5 Nov 1973] 51331/73 Heading B8A A conveying surface formed by blocks 6 carried by endless chains 8 has retractable flights 16 which can be extended and retracted in groups by a plurality of independently operable moving members 24. As shown, two members 24 co-operate with projections 23 carried by a flight 16. Each of the latter is movable in a respective transversely disposed slot 15 in a block 6. The members 24 are connected via a linkage 25 with a cam follower 26 which is in contact with a cam surface 27 supported on rollers 28. Other flights 16 have projections 23a which co-operate with moving members 24a similarly arranged to co-operate with the cam 27 as do the members 24. Still further flights 16 have projections 23b and yet other flights have projections 23c. These cooperate with moving members 24b and 24c as above described. Some flights 16 may have more than one group of projections, e.g. 23a and 23c, thus co-operating with both the moving members 24a and 24c. The flights are spring loaded to the retracted position by springs 20. This action is supplemented by the provision of a hook member 30 which co-operates with a corresponding member 29 carried by each flight. The hook member 30 is co-extensive with the members 24 and is spring or cam operated.
Patent GB-1453455-A (GB)
Title: Apparatus and method for balance correcting pneumatic tyres
IPC: B24B49/00
Filed: 1973-11-06
Abstract: 1453455 Grinding tyres GENERAL TIRE & RUBBER CO 6 Nov 1973 [13 Nov 1972] 51547/73 Heading B3D [Also in Division G3] Apparatus for balance correcting pneumatic tyres comprises means for rotating an inflated pneumatic tyre, grinding means for removing rubber from the tyre, a light source for illuminating reflective means, previously applied to the tyre, on each revolution of the tyre, a light sensing means for sensing light reflected by the reflective means, and outputting an electrical signal responsive to reflected light sensed, and actuating means for operating the grinding means to remove rubber from the tyre in response to the output from the light sensing means. In the illustrated embodiment, a pneumatic tyre, which has been tested for balance and on which a mark 11 has been placed diametrically opposite the portion of the tyre from which rubber is to be removed to correct imbalance, is placed on a chuck 13, inflated and rotated. Upon inflation a switch 37 is automatically actuated to cause power to be supplied to a servo-mechanism 29, which controls a ram 27, to move grinding wheel 21 towards the tyre tread. Sensor 30 on engaging the tread prevents further movement and the wheel is held in a "retracted" position adjacent to but not touching the tread. The wheel is moved into engagement with the tread when light from a source 18, reflected by a reflecting strip 16 previously applied to the tyre and of a width corresponding to the amount of rubber to be removed, is sensed by sensor 19. When sensor 19 no longer senses reflected light the grinding wheel is returned to its "retracted" position. The number of revolutions of the tyre is controlled by a timer forming a part of switch 37. When the timer "times out" the switch 37 is switched OFF, and the hydraulic ram 27 is automatically drained to allow the sensor 30 to move away from the tyre. The force with which the grinding wheel is urged against the tyre is controlled by the width of the reflective strip 16. The potentiometers 44, 47 respectively, control the "retracted" position of the grinding wheel and the gain of the amplifier 39. In an alternative embodiment (Fig. 3, not shown) a mark or marks on the tyre indicative of the amount of rubber to be removed are sensed by a control circuit as a corresponding number of pulses and the pulses automatically control the number of actuations of the grinding wheel. Instead of the grinding wheel moving, as illustrated, into contact with the tyre, the latter may be moved into contact with the grinding wheel or the tyre and wheel may be in continuous contact with the wheel being rotated relative to the tyre to effect grinding.
Patent GB-1120187-A (GB)
Title: Hydro-pneumatic suspension devices
IPC: B60G15/12
Filed: 1966-11-17
Abstract: 1,120,187. Vehicle suspension &c. ADAM OPEL A.G. 17 Nov., 1966 [3 Dec., 1965], No. 51565/66. Heading B7D. [Also in Division F2] A self-levelling hydro-pneumatic suspension unit comprises a damper piston 63 which works in a cylinder 62 and has a hollow piston-rod 12 with a separating piston 102 which divides the interior of the rod 12 into a high-pressure gas reservoir 100, and a liquid storage space 101, and an outer tube 60 which forms an annular space 71 for a suspension gas spring 90 which is delimited by a tubular flexible diaphragm 91, the space 71 communicating with a lower damper chamber 70 through cut-outs in a closure cap 65 welded to the bottom of the outer tube 60, the chamber 70 being connected to an upper annular chamber 111 by funnel-shaped ducts 110 in the piston 63, and a communicating passage in the piston between the space 101 and the annular chamber 111 being controlled by a valve disc 116 urged on its seat by a spring 120 which is constrained between a stop plate 117 on a valve stem 113 and the piston 63. An abutment spring 130, secured in the cap 65, is adapted to trip the valve 116 after a downward movement greater than distance a from its normal design position M. When the piston descends below the distance a, the spring 130 abuts the valve stop plate 117 and raises the valve disc 116 from its seat so that liquid can flow from the storage chamber 101 into the working cylinder 62 and raise the piston to a position at least above the lowest point of the distance a. When the unit extends beyond its normal length the pressure of the liquid in the annular chamber 111 is sufficient to lift the valve disc 116 so that liquid can flow into the storage space 101 until the piston descends to a position within its normal operating range and the valve disc 116 closes. Extension of the unit is limited when a stop 85 on the piston-rod 12 engages a buffer ring 84 situated beneath a bearing 75. The outer tube 60 carries a tubular flange 25 which rests upon a stub axle holder 26, Fig. 1, the upper end of the piston-rod 12 being mounted rotatably and universally in a support tube 13 by means of a resilient member 15 having a depending buffer portion 22. The stub axle holder 26 is connected by means of a ball joint to a link 33, the other end of which is pivoted, at 34, to a vehicle cross-member 35. In a rear suspension, Fig. 2, the upper end of the rod 12 is universally mounted in a support tube 13 connected to the vehicle chassis 45, the lower end of the cylinder 11 having an eye 46 which, with the interposition of rubber bushes 48, 49, is bolted to a yoke 52 carried by the rear axle support tube 53.