baber/WOPTO huggingface dataset:
Patent GB-1408173-A (GB)
Title: Piezoelectric semi-conductor arrangements
IPC: H01L27/20
Filed: 1972-08-25
Abstract: 1408173 Piezo - electric semi - conductor arrangements F SEIFERT 25 Aug 1972 [26 Aug 1971 31 Dec 1971] 39613/72 Heading H1K A semi-conductor arrangement for controlling, amplifying or selectively distributing electrical power comprises a semi-conductor body 1, Fig. 1, which is provided with an optical or electrical arrangement 6 for injecting charge carriers additional to those already present and in thermal equilibrium, and a piezo-electric arrangement, e.g. the ohmic end contacts 2, 3 and voltage source 4, for generating acoustic waves which produce in the semi-conductor body a spatial shift of the injected minority charge carriers in the direction of propagation of the acoustic wave, and one or more rectifying collector junctions, e.g. oppositely biased rectifying diode contacts 7, 8, each connected to a respective individual or common load element 9 by a respective or common D.C. circuit so that the acoustically transferred minority carriers produce an increase in the current through at least one of the collectors which produces a rise in the voltage across the respective individual or common load. The output voltage fluctuations across the load resistor 9 is amplified due to transistor effect. A bi-polar transistor of P-N-I-P configuration, Fig. 5 (not shown), is formed of piezo-electric semi-conductor material carrying at one end an acousto-electrical transducer energized by an A.C. voltage source. The amplitude of the modulation of the collector current by the acoustic frequency is controllable by the emitter-base bias voltage. An arrangement utilizing a selective switching monolithic semi-conductor, Fig. 7, has a number of arrays of emitters 6, e.g. formed by a light input or forward-biased diode of P-N junction or Schottky metal type, and corresponding collectors 8, formed by reverse biased diodes, and the acoustic wave is produced by a Gunn element with ohmic contacts 20, 21 and a D.C. voltage source 22. The figure contrasts an arrangement of the invention in which separate inputs 23 and a number of collectors 8 are connected in common, with a known arrangement which has a common input connection 24 and the collectors individually biased by respective capacitors 25. The arrangement of the invention may be used as a photo-electric image converter if the image to be transmitted is focused on the body. In the image converter arrangement of Fig. 8, a thin semi-conductor body 1 rests on or is epitaxially grown on a highly piezo-electric carrier 26, e.g. of lithium niobate, and the acoustic surface wave 5, generated by interdigitated transducer 27, propagates along the semi-conductor/carrier body interface to provide the transfer and delayed recombination of surplus charge carriers in the semi-conductor. The emitters 6 and collectors 8 are isolated by intervening S-type regions and the input signal is applied between input terminals 23. Injection action may also be produced by directing light at control points 6.
Patent GB-892663-A (GB)
Title: Coalescer element
IPC: B01D17/04
Filed: 1960-11-18
Abstract: 892,663. Filter and coalescer elements. PUROLATOR PRODUCTS Inc. Nov. 18, 1960 [March 18, 1960], No. 39774/60. Class 46. A hollow coalescer element for in-to-out flow consists of a tube of pleated resin-impregnated paper 24, Fig. 3, surrounded by open-cell plastic foam material 25, preferably polyurethane, to enlarge the water drops produced by the emulsion-breaking action of the paper. Several such elements are incorporated in a casing 10, Fig. 1, to which contaminated liquid fuel is admitted at 13 and from which purified fuel is withdrawn at 14 and water at 16. In a modification for out-to-in flow the paper surrounds the foam material.
Patent GB-1119341-A (GB)
Title: Improvements in and relating to gas hotplates
Inventor: CULSHAW GORDON WILSON
IPC: F24C3/12
Filed: 1964-10-02
Abstract: 1,119,341. Gas burners. STOVES Ltd. 20 Sept., 1965 [2 Oct., 1964], No. 40122/64. Heading F4T. A gas tap actuated by a spindle (9) and comprising a gas discharge nozzle 10 directing gas into a mixing tube (5), is provided with an apertured thimble-like shroud 14 which is movable axially in front of the gas discharge nozzle 10 to adjust the rate of air induction. The shroud 14 is moved by a screw 19 which is threaded into a lug 20 in the nozzle and is rotatably mounted in a hole in a lug 18 on the shroud. The forward end of the screw is slotted to enable it to be rotated and is located beside the spindle (9) of the tap.
Patent GB-1505229-A (GB)
Title: High pressure piston and method of manufacture
IPC: F04B3/00
Filed: 1976-09-28
Abstract: 1505229 Pistons; seals KENNAMETAL Inc 28 Sept 1976 [1 Oct 1975] 40168/76 Headings F2T and F2B A piston 20 of circular cross-section for a high-pressure pump, comprises a central tubular section 32 formed of cemented hard metal carbide e.g. tungsten carbide, with a length to diameter ratio of at least 6; steel end caps 26, 28, engaging the ends of the tubular section 32; and a connector member 30 extending axially through the tubular section 32, and connected to the end caps 26, 28 to draw them towards one another in order to impart a predetermined compressive preload on the tubular section 32. In the embodiment, the connector member is integral with one end cap 26 screwed into the other end cap 28, and locked with a dowel pin 46. A seal 38 is provided between the tubular section 32 and the end cap 28 in the form of a hollow metallic member 27, Fig. 4 (not shown), with a vent hole 27 so that any pressure leakage enters the member 27 and improves the sealing. The interior of the piston 20 is vented to atmosphere by a groove 52, Fig. 3 (not shown). The greater thermal coefficient of expansion of the steel connector 30 compared with the metal carbide tubular section allows the preloading to be applied by tightening the threaded end cap while the assembly is hot, e.g. 400 C.
Patent GB-1131045-A (GB)
Title: Improvements relating to adhesive compositions
IPC: C09J123/16
Filed: 1965-09-22
Abstract: 1,131,045. Rubber banded metal laminates. W. R. GRACE & CO. 22 Sept., 1965 [17 Dec., 1964], No. 40459/65. Heading B5N. [Also in Division C3] Metals may be laminated with adhesive compositions comprising (a) 100 parts by weight of a normally solid rubbery terpolymer of ethylene, propylene and a non-conjugated diene hydrocarbon; (b) 15 to 105 parts by weight of a normally solid oxidized linear polyethylene of density 0À937 to 1À050 g./c.c. a crystalline melting point of 125‹ to 135‹ C., a melt index of 0À1 to 50, a carbonyl content of 0À2 to 7À5% by weight and an oxygen functionality index greater than 0À03; and (c) 30 to 120 parts of a hard clay. Preferred non-conjugated dienes are 1,4-hexadiene and dicyclopentadiene. Specified metals are aluminium and tin-coated steel. Laminating may be effected by washing the metals, e.g. with carbon tetrachloride, applying the adhesive between the surfaces to be laminated and curing the assembly at elevated temperatures and pressures. Examples describe the laminating of strips of aluminium and of tin-coated steel.
Patent GB-1127580-A (GB)
Title: Pulse generating circuit
IPC: G06V10/20
Filed: 1967-09-06
Abstract: 1,127,580. Pulse manipulating circuits. INTERNATIONAL BUSINESS MACHINES CORP. 6 Sept., 1967 [30 Sept., 1966], No. 40632/67. Heading H3P. A pulse output is produced when an integral function of an input pulse has a predetermined relation to a delayed function of the pulse. As shown the input pulse is clipped to produce pulse A and integrated at 5 to produce C. The clipped pulse is also delayed at 6 and integrated at 7 (to produce E). When the output of amplifier 8 reaches the amplitude of the output of integrator 5 a voltage discriminator 2 operates a mono-stable multivibrator 9 the output of which, G, resets the integrators. If the gain of the amplifier is two the output pulse is delayed with respect to the mid-point of the input pulse by the delay in the delay circuit. The delayed integrated function may be obtained by omitting integrator 7 and feeding the delaying and amplifying path from the output of integrator 5.
Patent GB-921455-A (GB)
Title: Improvements in or relating to photo-electric apparatus for detecting flaws in machine knitted material
Inventor: WOODWARD WILLIAM HENRY
IPC: D06H3/08
Filed: 1960-11-25
Abstract: 921,455. Flow detection by photo-electric devices. LANCASHIRE DYNAMO ELECTRONIC PRODUCTS Ltd. Nov. 27, 1961 [Nov. 25, 1960], No. 40696/60. Class 40 (3). Flow-detection apparatus for knitted material 2 comprises two photo-electric devices 4, 5, each coupled to its own variable gain amplifier 7 and 6 respectively, the outputs of each being fed to a comparator 12 which detects the difference in output of the two amplifiers caused by a flow in the material. The gain of one amplifier 7 is controlled by a voltage divider comprising two resistors 10, 11, one of these resistors 11 forming a variable resistive element of a thermistor 19 having a resistance beating element 20 connected to a D.C. amplifier 21 which is under the control of the output from the comparator. The element 20 may heat the resistor 11 to increase its resistance and thereby increase the gain of the amplifier 7 to an amount depending on the output of the comparator. The inherent delay in the response of the thermistor 19 to variations in the control current allows automatic gain control of the amplifier 7 to compensate for variations in the characteristics of the photo-electric devices and/or the amplifiers without preventing the system from controlling a flow signal amplifier 18 when a relatively sudden change in the output of either amplifier occurs due to the detection of a flow in the material. The material is illuminated by a double-beam lamp 3 fed from A.C. mains, thus producing a ripple in the light intensity to provide the amplifiers with a constant input.
Patent GB-1042569-A (GB)
Title: Winding machine
IPC: B65H67/02
Filed: 1964-10-07
Abstract: 1,042,569. Creel apparatus. LEESONA CORPORATION. Oct 7, 1964 [Oct. 21,1963], No. 40816/64. Headings DID and D1J. In a winding machine bobbins P are mounted on a carrier 26 fixed on a rotatable shaft 12 and the carrier is indexed through 180 degrees to move the bobbins from a position 5<SP>1</SP> at which they are unwound to a position S 2  at which the empty tube is removed, means being provided which grip the bobbin tube only when it is in its unwinding position. Each bobbin receiving spindle comprises (see Fig. 2, not shown) a hollow shaft 32 which is fixedly mounted in the carrier 26 and has a tapered top portion 34 to receive the bobbin B. A plunger 76 runs through shaft 32 and has at its upper end a sloping surface 80 engagable with a blade 70 pivoted about a pin 69 in a slot cut in the portion 34. The bottom end of plunger 76 depends below carrier 30 so that as the associated package moves into its unwinding position the plunger is engaged and raised by a cam surface 84 so that the blade 70 is moved outwardly to grip the inside of the package tube. The package tube is so gripped until it is moved away from the unwinding position when the lower end of the plunger leaves the cam surface 84. For larger package tubes three or more outwardly movable blades may be provided to grip the tube (see Figs. 4, 5, 6 not shown). The shaft 32 is surrounded by a loose tube 48 which at its upper end carries a conical disc 88 which initially supports and centres the bobbin tube. The lower part of tube 48 is engaged by the forked end 42 of a lever 40 which is pivoted at 38 on the carrier and has a depending tongue 50 engaging a cam 54 such that as an empty tube is moved towards the position S 2  the forked end 42 lifts tube 48 and thus the package tube to displace it from its spindle so that it may be removed by a tube 60. A fresh package tube is then placed on the empty spindle.
Patent GB-1442029-A (GB)
IPC: H02K15/00
Filed: 1974-09-19
Abstract: 1442029 Shaping stator coils R W PETERS 19 Sept 1974 [27 Sept 1973] 40816/74 Heading B3A Stator coil forming apparatus 10 comprises; a frame 12, a pair of dies 14, 16, mounted on the frame each die including a base 28, support means 64 mounted on the base, means, e.g. springs 120, for biasing the support means to an inoperative position, a number of coil forming segments 22, 24 mounted for movement between operative and inoperative positions, cam means 40, 48 mounted on the base 28 for moving the segments 22, 24 to their operative and inoperative positions on movement of the support means relative to the base, and means, e.g. a plate 26 secured to the base for compressing the stator coils confined in the space between the segments 22, 24. A stator 18 is placed on the supports 64 of the die 14 and a crosshead 15 is actuated to lower the die 16 on to the stator thereby moving mounting plates 66 towards the bases 28 in both dies. The movement of the plates 66 causes cams 42, 50 to engage edges 94, 103 of the segments 24, 22 respectively pivoting them inwardly about pins 98, 110, the segments 22 forming substantially a complete ring about the inner surface of the coils 20. Continued movement of the dies bring the compression plates 26 into contact with the coils the end turns of which are compacted between the segments 22, 24 and the plate 26. As the dies are moved apart, the springs 120 move the plates 66 away from the bases 28 and the segments 22, 24 are pivoted apart by the cams 42, 50.
Patent GB-408282-A (GB)
Abstract: 408,282. Order telegraph apparatus. HARDING, J., 14, Bernard Gardens, Wimbledon, London. Sept. 30, 1932,No. 27208. [Class 118 (ii).] One or more non-endless display bands wound on and off two rollers 21, 22, Fig. 3, is or are actuated step-by-step by distant control from a similar, but smaller, display band wound manually on and off two rollers 2, 3, Fig. 7. The roller 2 is of polygonal cross-section and is removably mounted between a spring-pressed flange 7 and a flange 8 rotated through pawl-andratchet mechanism by a handle 14. The pawls 11 are carried by a rocker-arm 12 spring-pressed against the flange 8 to allow the pawls 11 to ride over the ratchet teeth at each reversal of the handle 14. A spring 5<a> allows the removal of the roller 3. The arm 12 is fixed to two wires 16 which pass through sheaths 18 and are connected at the far end to a rocker-arm 36 on the shaft 31 of the polygonal roller 22. The arm 36 is spring-pressed to engage the roller flange 25 by pawl-and-ratchet action and thus to advance the roller 22 in step with the roller 2. A helical spring mounted on the shaft of the roller 21 becomes tensioned as the band is unwound therefrom, and on releasing the roller 22 by a spring-held manually retracted member 33 the band is again wound up. To prevent the roller 22 over-running it is provided with a spring which moves, when the band is unwound, to encounter a stop. The member 33 acts by withdrawing its pawl 44 from teeth 32 on the flange 25 and by forcing the arm 36 away from the flange 25, and may carry a projection to force a brake-block against the flange 25 to keep the band taut. A shutter 34 is mounted on the arm 36 to conceal the band during change. A bell may be struck at each partial turn of the roller 22 by a hammer tripped by a star-wheel on the roller shaft, and pawl-and-ratchet means may be provided to disconnect the bell during return of the arm 36 and when re-winding the band. A modified form of actuating device comprises a pawlcarrying disc engaging a ratchet attached to the flange 8, a spring bearing on a square boss to register the roller 22. Fig. 15 shows a brake for retarding the rollers 3 or 21 in re-winding the bands. Leaf springs 60 bear on the roller flanges during the initial winding on, but are pressed away therefrom as the band accumulates by the pressure of the band on a roll 61 carried by the springs 60.
Patent GB-1363031-A (GB)
Title: Interrupter device for high voltage direct current
IPC: H01H33/16
Filed: 1972-09-05
Abstract: 1363031 Arc rupturing in switches J L GRATZMULLER 5 Sept 1972 [30 Sept 1971] 41035/72 Heading H1N An interrupter device for high voltage D.C, comprises a plurality of resistors R 1 , R 2  in a series circuit having a "final" switching element D3 located between two of the resistors, a "transfer" switching element D1, D2 associated with each resistor and connected on opposite sides of that resistor, and a plurality of capacitors C1, C2 each connected so as to bridge the "final" switching element and at least the associated "transfer" switching element, the switching elements being opened successively to insert the resistances progressively into the circuit. The first switching element D1 may be connected between the terminals 4, 6, and serve as main switch, which when opened inserts the first resistor Rl into the circuit. The resistors may be non-linear and of successively greater resistance.
Patent GB-1223914-A (GB)
Title: Method of combating weeds in maize cultures
IPC: A01N47/00
Filed: 1968-08-28
Abstract: 1,223,914. Combating weeds in maize. CIBA Ltd. 28 Aug., 1968 [31 Aug., 1967], No. 41050/68. Heading ASE. A method of combating weeds in a maize culture comprises applying to the culture the compound of formula: The compound is preferably applied in the form of a composition with conventional ingredients.
Patent GB-1236428-A (GB)
Title: Methods and materials for joining silicon powder structures
Inventor: MAY EDWIN RICHARD WELLS
IPC: C04B35/591
Filed: 1968-08-29
Abstract: 1,236,428. Silicon and silicon nitride bodies. NATIONAL RESEARCH DEVELOPMENT CORP. 22 Aug., 1969 [29 Aug., 1968], No. 41202/68. Heading C1A. [Also in Division C3] In the production of silicon nitride bodies, a binder comprising a mixture of silicon powder and a solution of ammonium alginate is used, this binder being applied to the faces of structures made from silicon powder or partially nitrided silicon powder, the treated faces then being brought into contact under pressure, dried and the liquid evaporated, and the resulting body heated in an atmosphere of nitrogen until a homogeneous Si 3 M 4  structure is produced. The silicon powder of the binder may be fine enough to pass through a 400 B.S. mesh sieve and the ammonium alginate solution preferably is a 1% solution of ammonium alginate in distilled water. The faces to be joined are preferably melted with distilled water before the alginate film is applied.
Patent GB-1006997-A (GB)
Title: Coal plough
IPC: E21C27/34
Filed: 1961-11-17
Abstract: 1,006,997. Mineral-mining machines. A. OELLRICH, [trading as MASCHINEN-FABRIK UND EISENGIESSEREI A BEIEN]. Nov. 17, 1961 [Nov. 19,1960(2)], No. 41280/61. Addition to 931,620. Heading E1F. In a coal plough, such as that referred to in the parent Specification, in which, on the plough encountering abnormal resistance to advance the resultant slip between the plough body and the haulage means thereof is utilized to drive through a suitable gear train cam means to cause pulsing forces to be applied to the shearing edges of the plough. The cam means include a cam wheel 7 in which roller cams 10 can be rotatably and exchangeably mounted on the cam wheel so that the impact pattern on the ploughing tools can be varied by varying the position and number of the rollers on the wheel. Mechanical or hydraulic braking means is applied to the gear train to ensure that impulsing of the plough tools does not occur until a pre-determined resistance to advance is encountered by the plough.
Patent GB-915940-A (GB)
Title: Advertising or display device
IPC: G09F11/26
Filed: 1960-12-01
Abstract: 915,940. Display devices. GOODMAN DISPLAYS Ltd., LEON. (Paige, R. E.). Sept. 25, 1961 [Dec. 1, 1960], No. 41352/60. Class 3 (1). An endless paper band 20 is intermittently advanced by a rotating paddle-like element 22 made of stiff cardboard which engages folds 21 in the band and is driven by an electric motor 24. The motor and paddle element are mounted on hinged struts 13 of a facia board 10 which has an aperture (not shown) for viewing pictures on the band. The band is located by a hinged flap 17 behind the aperture.
Patent GB-998347-A (GB)
Title: Improvements in or relating to the production of polyoxymethylenes
Inventor: RAUM ALARIC LOUIS JEFFREY
IPC: C08G2/00
Filed: 1963-10-19
Abstract: Polymers and copolymers of formaldehyde are prepared in an inert solvent in the presence of a metal acetylacetonate as polymerization catalyst.  Specified metals are cupric copper, aluminium, titanium, zirconium, vanadium, chromium, ferric iron, cobalt and nickel. Specified solvents are hydrocarbons, organic halides, nitriles and nitro compounds.  The catalyst may be used in amount from 0.001 to 1.0 % based on the monomers.  Continuous feed or batch process may be used-the conditions should be anhydrous and a chain transfer agent may be present.  The products may be esterified, etherified or treated with isocyanates or diisocyanates.
Patent GB-1010217-A (GB)
Title: Improvements in or relating to apparatus for dispensing viscous liquids
Inventor: BERWICK ALBERT GEORGE
IPC: F16C3/22
Filed: 1963-10-21
Abstract: 1,010,217. Gear pumps. GASKELL & CHAMBERS (NON-DRIP MEASURE) Ltd. Oct. 13, 1964 [Oct. 21, 1963], No. 41469/63. Heading F1F. Apparatus for dispensing thick oils and other viscous liquids, comprises a gear pump having gears 8, 9, Fig. 1, fast on lay and drive shafts 10, 11 respectively and a ratchet wheel 13 fast on the drive shaft which engages a spring-loaded pawl 14 attached to a rod 15 passing through the bore of an operating handle 12. The number of revolutions of the handle and hence the amount of liquid dispensed is determined by a control member 19 having a slot 20 through which the handle passes a flanged sleeve 18 having indents 18a engageable by a screw 18b and stops 19a, 24 on the control member 19 which co-operate respectively with the lip 23a on a washer 23 held by a gland 22 and a stop 24a on the flanged sleeve 18. The sleeve 18 is initially adjusted to adjust pump output by means of a screwthreaded attachment with a fixed bush 17. To prime the pump the spring-loaded pawl 14 is removed from engagement with the ratchet wheel 13 by a knurled head 16 which permits rotation of the gears in the opposite direction. Oil is then poured into the pipe 6 after removal of the delivery pipe 7.
Patent GB-1345746-A (GB)
Title: Stabilised dispersions of tetrafluoroethylene polymers
IPC: C08F6/14
Filed: 1971-09-06
Abstract: 1345746 Tetrafluoroethylene polymer disper sions E I DU PONT DE NEMOURS & CO 6 Sept 1971 [15 Sept 1970] 41473/71 Heading C3P An aqueous dispersion of tetrafluoroethylene polymer has a pH greater than 7 and contains a non-ionic surfactant and a solubilizing agent for iron present in the dispersion which prevents the formation of brown scum on the surface of the dispersion selected from acids of alkylene diamines, ammonia-triacetic acid, oxalic, malonic, citric and tartaric acids, phosphoric acids and salts, alkali metal fluorides, ethylene diamine, diethylene triamine and 1,2-propane diamine. The solubilizing agent may be added with the other ingredients to prevent scum formation or it may be added after scum has formed to remove it. In examples a polytetrafluoroethylene aqueous dispersion having pH 9À5 contained polyethylene glycol octylphenyl ether or an ethoxylated aliphatic alcohol as surfactant and as solubilizing agent citric acid, oxalic acid, tartaric acid, potassium fluoride, ammonium phosphate or the sodium salt of ethylene diamine tetracetic acid. An aqueous dispersion of tetrafluoroethylene/hexafluoropropylene copolymer having pH 9À5 containing polyethylene glycol octylphenyl ether and citric acid is also described.
Patent GB-1030405-A (GB)
Title: Improvements relating to a method of welding
Inventor: SANTILHANO PHILLIP DIAS
IPC: B23K25/00
Filed: 1962-11-02
Abstract: In electro-slag welding the welding wire and flux compositions are: .C 0.09%.S1O2 46.21% .Si 0.19%.MnO 34.5% .Mn 1.92%.CaF2 7.63% .S 0.021%.Al2O3 5.06% .P 0.021%.MgO 4.9% .Ni 0.15%.Fe2O3 1.54% .Cr 0.15%.K2O 0.06% .Mo 0.02%.Na2O 0.05% .Cu 0.32%.TiO2 0.05% .St 0.02%. .Fe balance.