baber/WOPTO huggingface dataset:
Patent GB-1228395-A (GB)
IPC: H02M7/15
Filed: 1968-10-11
Abstract: 1,228,395. Gas-filled rectifiers. M-O VALVE CO. Ltd. 10 Oct., 1969 [11 Oct., 1968; 19 Feb., 1969; 14 April, 1969], Nos. 48247/68, 9079/69 and 18900/69. Heading H2F. In a deionization arrangement for a gasfilled rectifier having graded potential grids connected to a biasing circuit including R9, C10 (Fig. 1), when discharge ceases and the anode potential is increasing negatively with respect to that of cathode 2, spark gaps 11 to 17 are arranged to break down sequentially and apply a negative potential to a respective grid electrode. Thereby deionization of the spaces between the valve electrodes takes place sequentially starting with the space between anode 3 and grid 4. The delay in application of recovery potentials until the spark gaps break down prevents the occurrence of "hollow cathode" discharge at the grids. In addition since all the electrodes on the cathode side of a recovering gap are at cathode potential any secondary emission electrons in that gap are confined thereto so that initiation of a self sustaining discharge by the electrons is prevented. The values of capacitors C20 to C23 increase progressively toward the cathode (C21 is 15 times C20 and so on). Diode 19 ensures that grid 4 is at anode potential during normal forward conduction of the valve but is reverse biased when discharge ceases. Grid 8 is the control electrode and may also have a spark gap connected thereto.
Patent GB-1230760-A (GB)
IPC: F42B10/30
Filed: 1967-04-28
Abstract: 1,230,760. Deflecting propulsion jets. M. L. AVIATION CO. Ltd. 17 June, 1968 [28 April, 1967], No. 19667/67. Heading B7G. In a rocket control system, rotation about the longitudinal axis is effected by fixed fins while a movable deflecting surface at the exhaust nozzle provides an unbalanced lateral force, increasing the rocket pitch angle so as to cause a curved flight path. The deflector 5 is rotatably mounted on ball-race 6 and surrounds the exhaust nozzle 4. It is caused to oscillate, about a predetermined central position by alternate rotation first in one direction by the exhaust gases and rotation in the opposite direction by the rocket rotation. The first rotation is caused by the action of the gases on vanes 12 while the second is effected by engaging the latch 17, 23 with the ring 7, fixed to the rocket body, thereby rotating the deflector with the rocket. The change in roll position of the deflector is sensed by a gyroscope, an output signal from which releases the latch 17, 23 to permit opposite rotation due to the exhaust gases. Following a rotation in that sense the gyroscope relocks the latch.
Patent GB-1231333-A (GB)
IPC: C08L27/00
Filed: 1969-03-26
Abstract: 1,231,333. Stabilized tetrafluoroethylene copolymers. E.I. DU PONT DE NEMOURS & CO. 26 March, 1969 [1 April, 1968], No. 15960/69. Heading C3P. A copolymer of tetrafluoroethylene and another ethylenically unsaturated fluorinesubstituted monomer in which, as measured by infra-red analysis, at least half of the end groups are of the formula and remaining end groups (if any) are radicals may be prepared by stabilizing such a copolymer having end groups of the formula by converting at least half of these end groups to methyl ester groups. In the examples tetrafluoroethylene, perfluoropropylperfluorovinyl ether and hexafluoropropylene are copolymerized in the presence of 1,2,2-trichloro-1,1,2- trifluoroethane, bis(perfluoropropionyl)peroxide water and ammonium persulphate and treated with methanol.
Patent GB-1232216-A (GB)
IPC: B60T13/577
Filed: 1968-08-08
Abstract: 1,232,216. Servo-assisted hydraulic brake control. ROBERT BOSCH G.m.b.H. 8 Aug., 1968 [23 Aug., 1967], No. 37789/68. Heading F2F. A power-assisting mechanism such as a brake booster actuated by vacuum or compressed air for a motor vehicle comprises several radiallyarranged reaction levers which act together in a balance-beam-like manner with a force-transmitting member, a pressure-responsive working member and an adjusting member associated with a control valve for controlling the fluid pressure applied to the working member; the inner ends of the reaction levers engage in a circumferential groove in the adjusting member and are toothed, intermeshing with one another. As shown, Fig. 1, is almost indentical with the single Fig ire accompanying each of Specifications 1,115,892 and 1,115,891. In the present case each stud (or pin) 6 secured to the piston 3 does not have a spring surrounding it, and a catch 18 takes the place of the spring-retaining pin previously disclosed. The "reaction levers" are indicated at 8, the "force-transmitting member" at 17, 19, the "pressure-responsive working member" (piston) at 3, the "adjusting member" at 20, 10 and the "control valve" at 31, 32, 33. A shown in Fig. 2, the inner end of each lever 8 engaging in groove 9 of collar 10 has at one side a tooth 11, the end edge of which lies approximately at right angles to the lever and radially with respect to the centre of the collar 10. The flank 12 of tooth 11 follows the curve of the groove 9 and ends in a notch 13 comprisirg two edges 14, 15 approximately at right angles, which intermesh with the tooth of the next adjacent lever 8. The outer end of each lever has an opening engaging one of the studs 6. Preferably the reaction levers are punched without waste out of a sheet-metal strip.
Patent GB-1232346-A (GB)
IPC: A01D34/10
Filed: 1969-03-10
Abstract: 1,232,346. Starting I.C. engines. EATON STAMPING CO. 10 March, 1969 [11 March, 1968], No. 12605/69. Heading H2H. A system for starting a small I.C. engine, for instance on a lawn mower, comprises a batterydriven electric motor which drives a gear meshing with teeth on the flywheel of the engine. In the embodiment described, the starter motor 40 is energized by turning a key and so actuating a switch mounted on a casing in which the battery is housed, Figs. 6-8 (not shown). The armature shaft 46 now turns, and the rotation is transmitted to a starter shaft 60 through bevel gears 54 and 80. The inertia of a starter gear 96 now causes it to travel axially along the shaft 60 into the position shown in Fig. 5 because of its engagement with spiral threading 84 on the shaft. The gear is now meshed with the engine flywheel and causes the latter to turn until the engine starts, after which the gear 96 is thrown clear when its speed of rotation exceeds that of the shaft 60.
Patent GB-1238982-A (GB)
IPC: H01S3/038
Filed: 1969-03-28
Abstract: 1,238,982. Lasers. TRW Inc. 28 March, 1969 [28 March, 1968], No. 16499/69. Heading H1C. A gas laser is directly pumped by applying a suitably high voltage between an anode and a solid cold cathode which may be composed of bismuth, lead, tin, indium or gallium, or an alloy having suitably low properties of melting- point, vapour pressure and work function. An argon-filled laser tube 12 having Brewster windows 28, 30 is shown in Fig. 1, the tube being located between resonator mirrors 32, 34 of which mirror 34 is partially transmitting and has mechanical axial adjustment. A main anode 22 of indium and a solid cold cathode 24 in the form of a pellet are located in respective pockets 16, 14 which communicate with the discharge region 36 of the tube, this region containing a starting anode 42 positioned adjacent pocket 14. A gas reservoir 20 is coupled to the ends of the tube. Starting is effected by a control network 44 which applies a pulse of about 10 kv. to the auxiliary anode and a pulse of about 800 v. to the main anode, the latter voltage being reduced to a running voltage of about 450 v. Emission is obtained from a localized hot spot produced at an irregularity of the solid cathode surface, the localized spot drifting over this surface during operation. The laser tube and mirrors may be resiliently mounted in a portable metal tube which also contains an array of storage cells and a power conditioning and control circuit, Fig. 7 (not shown).
Patent GB-1251912-A (GB)
IPC: B65B23/06
Filed: 1969-06-10
Abstract: 1,251,912. Orientating eggs on endless conveyers. H. Y. KUHL and P. R. KUHL. 10 June, 1969 [19 June, 1968], No. 29416/69. Heading B8A. A device for orientating eggs and introducing them with their narrow ends pointing downwards into transport means 11 having receiving pockets 10, comprises an endless conveyer 1 having a plurality of parallel rollers 2 rotating in the same direction when in the conveying path of the conveyer. Each egg is supported by two rollers, lateral defining walls 8 extending in the conveying direction above the rollers against which the narrow ends of the eggs engage as a result of lateral movement of the eggs relative to the conveying direction. As the eggs are transferred from the conveyer 1 to the transport means 11 by a roller 9, elastic guide tongues 14 clamped only at their upper ends, act to hold back the eggs so as to cause them to turn themselves, as they pass the deflecting roller, with their narrow ends pointing downwards into the receiving pockets of the transport means 11 which arrive in readiness beneath the tongues.
Patent GB-1257097-A (GB)
IPC: C07C209/00
Filed: 1969-08-06
Abstract: 1,257,097. Cyclopropylamine. GULF RESEARCH & DEVELOPMENT CO. 6 Aug., 1969 [29 Aug., 1968], No. 39282/69. Heading C2C. Cyclopropylamine is prepared by first adding an alkali metal hypochlorite to an aqueous solution of cyclopropane-carboxamide to yield an intermediate reaction mixture wherein substantial conversion to the alkali metal cyclopropane carboxylate has been prevented and then reacting the intermediate reaction mixture with an alkali metal hydroxide to yield a reaction mixture containing cyclopropylamine in aqueous solution. The cyclopropane carboxamide may be prepared by (a) reacting a lower alkyl C 1-4  4-chloro butyrate with an alkali metal alkoxide in an inert organic liquid to yield a reaction mixture containing lower alkyl C 1-4  cyclopropane carboxylate, (b) reacting ammonia with the reaction mixture from step (a) in the presence of alkali metal alkoxide and a lower alkanol C 1-4  to yield a reaction mixture containing cyclopropane carboxamide, (c) removing the lower alkanol C 1-4  and unreacted ammonia and ester by distillation to yield an overhead distillate, (d) adding water to the residual mixture and separating the organic phase and an aqueous solution of cyclopropane carboxamide, (e) recycling the organic phase to step (a).
Patent GB-1290330-A (GB)
IPC: F41A17/54
Filed: 1968-12-12
Abstract: 1290330 Security device for firearms VALMATICS Ltd 12 Dec 1969 [12 Dec 1968] 59226/68 Heading F3C A security device for firearms or the like comprises a pair of plates 2, 10 which in use enclose the trigger of the firearm and are locked about the trigger. One plate 2 is provided with a cylinder or barrel lock 3 a rotatable, threaded portion 8 of which engages in a tapped hole 9 in the other plate 10. A threaded bore may be provided in the rotatable portion of the lock, a threaded spigot of the other plate co-operating therewith (Fig. 3, not shown). The interengagement may be in the form of a bayonet connection. Hardened steel pins 11, 12 are inserted in the body of the lock and rotatable portion for strengthening purposes. The lock 3 is connected to the plate 2 by a locking nut 4 and a grub screw 13. Reference has been directed by the Comptroller to Specification 1,157,247
Patent GB-1297750-A (GB)
IPC: A61M5/32
Filed: 1971-04-19
Abstract: 1297750 Surgical syringe BECTON DICKINSON & CO 19 April 1971 [6 April 1970] 26389/71 Heading A5R A self-contained disposable syringe 20 comprises a barrel 21 having a rear end covered by removable sealing means 26, a needle 22 secured in the front end e.g. by epoxy resin, a plunger 23 comprising a stopper 41 and a rod portion and a needle shield 24, normally in sealing engagement with the forward end of the barrel, the needle shield 24 being removable from the barrel 21 for engagement with the rear end of the plunger to form a handle. The syringe barrel 21 has a reduced forward end portion 27 and an annular skirt 32. The proximal end 47 of the needle shield 24 has a reduced outer diameter compared to the main body portion 45 of the needle shield 24 and fits into a recess 33 so that the skirt 32 is gripped by annular rings 48 on the proximal end 47 of the needle shield 24. The distal end 46 of the needle shield 24 is integrally formed or is closed by a removable sealing means 26. In use, the needle shield 24 is removed and, by either piercing or removing sealing means 26, attached to the barrel with the proximal end 47 of the needle shield 24 frictionally engaged with the lugs 55 of the plunger 23 to form a handle. The rod portion consists of spaced ribs 38' extending almost the length of the plunger 23. The forward end portion of the plunger has a cylindrical projection 38 terminating in a flanged lip 39 which supports the flexible stopper 41. A pair of annular projections 43 on the stopper 41 engage with the inner surface of the syringe barrel 21 to form a seal so that, when the plunger 23 is withdrawn, fluid is drawn into cavity 44 formed between the forward lip of the stopper 41 and the rear end 31 of the needle 22.
Patent GB-1297793-A (GB)
IPC: B62D11/10
Filed: 1969-12-05
Abstract: 1297793 Controlling power lifts of tractors KLOCKNER-HUMBOLDT-DEUTZ AG 5 Dec 1969 [7 Dec 1968] 59630/69 Heading A1P [Also in Division F2] In a tractor driven from an engine 2 through a torque converter 3, the power lift controls the working depth of a plough 50 in combined dependence on the transmission ratio of the torque converter and the input torque to the torque converter. The engine 2 is maintained at constant speed by fuel regulation, and the torque converter 3 comprises a chain or belt 11 engaging axially-separable halves 7 and 9, 8 and 10 of pulleys whose effective diameter is varied by supplying pressure fluid to the chambers 14 and 19, the transmission ratio being selected by a hand lever 22 and being maintained constant by a control valve 16. The transmission ratio determines the position of a lever 25 pivoted at 26, engaging the pulley half 10 and transmitting movement via a lever 28 to a combining lever 30. The input torque to the torque converter 3 is determined by the pressure between pump and motor, or in the pipe 20, the pressure in the pipe 20 acting on a spring-biassed piston 35 having a rod 36 connected to the combining lever 30. The combining lever 30 transmits the combined movements of lever 28 and rod 36 via a link 37 to a valve 40 controlling the power lift. The transmission ratio is prevented from changing to match the demand for increased torque by the lever 25 and a lever 23 connected to the control valve 16, any slight movement of the pulley half 10 away from the half 8 moving the spool of the valve 16 to supply pressure fluid to the chamber 19 to oppose the movement of pulley half 10. An adjuster 31 permits the effect of the movement of the lever 28 to be adjusted. A hand lever 41 adjusts the effect of the movement of the lever 30. In another embodiment, the combining lever is pivoted at its lower end and its upper end carries the piston-cylinder device 33-36 axially so that the piston rod bears on one arm of a pivoted bell-crank lever whose other arm is pivoted to a link (like link 37). The effect of the transmission ratio on the combining lever is made variable by a pin-and-slot connection of the lever 28 thereto. In a modification, the one arm of the bell crank lever carries a member rotatable into various positions and engaged by the piston rod.
Patent GB-1303043-A (GB)
IPC: F16L13/16
Filed: 1969-08-20
Abstract: 1303043 Pipe joints BRITISH AIRCRAFT CORP Ltd 20 Aug 1970 [20 Aug 1969] 41550/69 Heading F2G The components for forming a pipe joint comprise a first pipe having its end formed into an outwardly directed radial flange, a second pipe also having its mouth formed into an outwardly directed radial flange, and an annular seal of resilient nonmetallic insulating material capable of fitting on both sides of the flange of the first pipe and round the outer edge of that flange. To make the joint the pipes are brought together so that part of the seal is sandwiched between the respective flanges, and curling the flange of the second pipe over the flange of the first pipe so as to form an inwardly directed radial flange separated from the rear face of the flange of the first pipe by a further part of the seal, the two pipes remaining electrically isolated from each other. In one embodiment of the joint so formed (see Fig. 2) the pipe ends are belled at 2, 5 and the seal has a bead 11. A further dished washer 12 of the same material as pipe 4 may prevent creep of the seal during curling of the flange of the second pipe. The joint is ideal for joining dissimilar metals (e.g. stainless steel and aluminium) without the occurrence of electrolytic corrosion. Pipe 4 is preferably of the softer material and may be originally formed with the outer part of the radial flange forming a tube large enough to accommodate flange 3 of pipe 1.
Patent GB-1308140-A (GB)
Title: Aromatic sulphones
IPC: C07C317/22
Filed: 1969-07-31
Abstract: 1308140 Aromatic sulphones IMPERIAL CHEMICAL INDUSTRIES Ltd 10 July 1970 [31 July 1969 3 June 1970] 29910/70 and 26836/70 Heading C2C The invention comprises aromatic sulphones of formula wherein X is a fluorine or chlorine atom. These sulphones may be prepared by reacting a compound of formula A-SO 2 -Y where Y is a halogen atom, preferably chlorine, or a hydroxy group, with a compound of formula H-B under conditions in which YH is eliminated, to form a compound A-SO 2 -B where A and B are different and selected from groups. The examples describe the preparation of 4 - (4 - chlorophenylsulphonyl) - biphenyl and 4 - (4 - fluorophenylsulphonyl)- biphenyl. The following compounds which are not claimed are also prepared in the examples:
Patent GB-1310348-A (GB)
Title: Edible products
IPC: A23L13/40
Filed: 1969-09-17
Abstract: 1310348 Meat product UNILEVER Ltd 15  Sept 1970 [17 Sept 1969] 45816/69 Heading A2B A coherent shaped dehydrated foodstuff comprises heat-set comminuted meat and a cooked comminuted starchy vegetable material in a form retaining the cellular structure of the vegetable, the vegetable material being bound in a matrix formed by the heat-set meat. The vegetable material is preferably dried potato, but may also be rice grains, barley grains, semolina or apple. The foodstuff may be prepared by (i) forming a mix containing uncooked comminuted meat and a dry precooked comminuted starchy vegetable material in a cellular form, (ii) shaping the mix, (iii) heating the shaped mix so as to set the protein of the meat about the vegetable material to form a matrix binding it, and (iv) dehydrating the heat-set shaped mix. The mix may also contain comminuted pre-cooked meat. Exemplified foodstuffs consist of beef and potato, pork and potato, rice grains, barley, apple or semolina, cod and potato, haddock and potato and chicken and potato. The foodstuff may be shaped into the form of strips, sheets, or balls.
Patent GB-1313871-A (GB)
Title: Semiconductor devices
IPC: H01L23/488
Filed: 1970-03-16
Abstract: 1313871 Semi-conductor devices MULLARD Ltd 1 July 1970 [16 March 1970] 12507/70 Heading H1K A supply conductor 12 is connected to an electrode 17 on a semi-conductor body 10 via an open-sided, electrically conductive interconnection member 13 of generally annular configuration which includes spaced, discrete contact portions 14 at one level secured to the electrode 17 and further spaced, discrete contact portions 19 at a second level secured to the end of the supply conductor 12 either directly or through a platform member 15. The interconnection member 13 preferably comprises an annulus, e.g. of Cu or Au-plated Ag, mechanically deformed into a stepped configuration. In the Si thyristor shown an Au-plated Ag gate lead 21 passes down through central apertures in the Cu platform member 15, the interconnection member 13 and the Au-plated Mo electrode plate 17 to contact the gate region centrally. The electrode plate 17 is soldered to Au-plated Ni metallization on the Si surface. The Si body 10 is soldered to a Mo disc 24 on a Cu header 25. Au-Ge and Au-Sn solders are used to assemble the structure. The thyristor body 10 includes multiple cathode-emitter shunts and has its edge doubly bevelled at angles of 4¢ and 20 degrees. The open-sided structure of the interconnection member 13 prevents the accumulation of pockets of etchant when the body 10 is etched and rinsed after assembly. Silicone rubber 27 protects the edge of the body 10.
Patent GB-1322480-A (GB)
Title: Controlled flow air outlet device for ventilating or heating  systems
IPC: B60H1/34
Filed: 1970-06-26
Abstract: 1322480 Ventilators CREATORS Ltd 26 June 1970 11545/73 Divided out of 1320695 Heading F4V An air outlet device for a ventilator, e.g. in a motor vehicle comprises a housing 65, a turnable louvre assembly 66 having parallel louvres 77 for directing the air in a desired vertical direction, a plurality of vanes 91 at right angles to louvres 77 and turnable to direct the air in a desired horizontal direction, the vanes 91 having pivots 92 engaged in slots 93 in louvres 77 and being hingedly connected to a control member 90 arranged to slide in a groove 94 provided by the louvres. The louvre assembly is mounted in the housing by bearings 84 and its angle can be adjusted manually. The flow of air is controlled by a valve 67 rotatable behind the louvre assembly between a position in which it clears the opening at the rear of the louvre assembly and a pc sition where it closes the opening. The valve is manually controlled by wheel 85 exposed through opening 87 in the louvre assembly. In ar other form (Fig. 5, not shown) the valve has a separate housing behind the housing for the louvre assembly. The valve is a pivoted flap and carries a toothed segment meshing with a toothed control wheel coaxial with the louvre assembly. Alternatively a lever may replace the toothed wheel. The components are moulded in a plastics material. Specification 1320695 is referred to.
Patent GB-1323266-A (GB)
Title: Information storage devices
IPC: G06K19/067
Filed: 1971-03-26
Abstract: 1323266 Identity cards INTERNATIONAL COMPUTERS Ltd 26 March 1971 8234/71 Heading B6A A badge in the form of a permanent storage device comprises a flexible printed circuit board 10, Fig. 1, enclosed between bonded plastics, opaque layers 11, 12 which may have different dielectric properties, the board having a plurality of small conductive areas 13, Fig. 2, connected by narrow conductive parts 14 to a common, central conductive area 15, some of the parts 14 being selectively removed such that when a reader, which has a corresponding number of areas 13 connected to individual terminals (not shown), is placed over the board and the areas 13 of the reader are energized successively a capacitive intercoupling action is obtained. The areas 13 of the board 10 may be subdivided, e.g. into three groups of seven bits so that three words can be "inscribed" into the board. To position the board correctly in the reader the board is provided with a verifying area 13<SP>1</SP> which is connected permanently to the central conductive area 15 by a narrow part 14<SP>1</SP>, the reader starting its operation only when a verifying signal is obtained from the coupled area 13<SP>1</SP>.
Patent GB-1323846-A (GB)
Title: Ski-sledge
IPC: B62B13/10
Filed: 1972-03-09
Abstract: 1323846 Sledges S R TINKER 9 March 1972 10923/72 Heading B7B A sledge has a front ski 1 that can be steered by a bar 27 and rear skis 2, 3, 2 and 3 carried by arms 4 and 5 respectively which are so interconnected that vertical movement of one ski 2, 3 relative to the sledge body is in opposition to vertical movement of the other ski. A spring 15 acts on a lever 11 formed by an extension of the arm 5, while a similar spring acts on lever 10 formed by an extension of the arm 4. The levers 10 and 11 are joined by a flexible connection 12 passing round a pulley 13. The connection 12 may be replaced by bevel gears meshing an interconnecting gear. The front ends of the rear skis are pivotally connected to arms 18, 19 pivoted to the sledge.