baber/WOPTO huggingface dataset:
Patent GB-1410015-A (GB)
Title: Record transcription devices
Inventor: WESTLAKE ALFRED LUIGI
IPC: G11B9/07
Filed: 1972-09-09
Abstract: 1410015 Capacitative transducers EMI Ltd 20 Nov 1972 [16 Dec 1971 9 Sept 1972] 58582/71 and 41969/72 Heading G5R A record 7 carrying a recording in the form of a pattern of surface deformations is disposed between an electrode 4, e.g. a turntable, and a skid 1 which constitutes or includes an electrically conductive probe 5 and is shaped so as to maintain the probe 5, as it scans the recording, at a substantially constant separation from the electrode 4, changes in electrical cpacitance between the probe 5 and the electrode 4, or, in the case of a conductive record 7, between the probe 5 and the record surface, being sensed by means 6, e.g. a capacitance bridge. The electrode 4 may be formed in the record which may be either a disc or a cylinder.
Patent GB-1493287-A (GB)
Title: Supply circuit for television receivers
IPC: H03K4/08
Filed: 1975-10-14
Abstract: 1493287 Supply circuit for television receivers INTERNATIONAL STANDARD ELECTRIC CORP 14 Oct 1975 [16 Oct 1974] 41987/75 Heading H4T A supply circuit for a television receiver, to be connected in use at terminals 4 and 5 to the horizontal deflection circuit, comprises a controlled semi-conductor switch, e.g. a thyristor Th, for interrupting the supply in the event of overloads or circuit failure, and a negative temperature coefficient resistor NTC in parallel with the switch, whereby initially a small current flows through the cold resistor NTC and cannot activate the deflection circuit, but when the resistor becomes heated a current flows sufficient to start the deflection circuit oscillation. Preferably the flyback pulses are then applied to the gate electrode 6 of the thyristor Th to render it conductive. For further protection, a resistor R7 with a solder fuse may be connected in series with the resistor NTC and in parallel with the thyristor Th. As shown, also connected to the mains terminal 1 is a degaussing circuit DG, comprising coils W1, W2 and positive temperature coefficient resistors PTC.
Patent GB-1078221-A (GB)
Title: Improvements in or relating to speed controlled electronic switching devices
IPC: G01P1/10
Filed: 1964-10-16
Abstract: 1,078,221. Transistor pulse circuits. ROBERT BOSCH G.m.b.H. Oct. 16, 1964 [Oct. 17, 1963], No. 42227/64. Heading H3T. [Also in Divisions G1 and G3] In an electronic switch which operates in dependence on the rotational speed of a shaft, electric pulses of frequency directly proportional, and duration inversely proportional, to the said speed are generated in a pulse source 10 and are applied to a bi-stable multivibrator 11 via two parallel RC circuits N1, N2 to cause multivibrator 11 to change its state at a first predetermined speed when the shaft is accelerating and to revert at a second predetermined speed when the shaft is slowing down. As shown, pulse source 10 comprises a camcontrolled contact breaker and a D.C. supply; alternatively an inductive or photo-electric generator may be used. Below the first predetermined speed, transistor T 2  in multivibrator 11 is conducting; at this speed, however, due to the decreasing duration of the pulses fed to N2, diode 40 starts to pass trigger pulses to the input E2 of multivibrator 11, causing the latter to switch to a condition in which T 1  is conducting. When the speed of the shaft falls to the second predetermined speed, diode 33 in N1 begins to pass pulses to input E1 of 11, so causing a reversion to the original state. The load resistors 41, 42 in the collector circuits of T 1 , T 2  respectively, may comprise relay coils in a system adapted to maintain the speed of an electric motor between the two predetermined speeds. In a modification, Fig. 5 (not shown), only one RC circuit (N2) is provided, and a signalling lamp (70) in the collector circuit of T 1  is illuminated when a predetermined speed is exceeded; artificial hysteresis is imparted by a series RC circuit (72, 73) between N 2  and the collector of T 2 , or, alternatively, by connecting the emitters of T 1  and T 2  to the positive line 31 through a common resistor (74), which is shunted by a capacitor (75). Fig. 6 (not shown) depicts a monostable multivibrator which may replace the bi-stable switch 11.
Patent GB-1152282-A (GB)
Title: Improvements in Bags
IPC: B65D75/00
Filed: 1967-03-14
Abstract: 1,152,282. Plastics bags with vents; packaging in heat-shrunk material. AMERICAN CAN CO. 14 March, 1967, No. 42285/67. Divided out of 1,152,281. Headings B8C and B8K. Air can escape from a bag through a vent 5 which is closed, as the bag is heat-shrunk about its contents, by engagement with an inner folded ear 4. The bag may be formed of two plastics sheets, one only of which is heatshrinkable, sealed together along three sides. The mouth of the bag is preferably not shrunk, thus facilitating removal of the contents. The invention may be applied to packaging sliced loaves.
Patent GB-1141194-A (GB)
Title: Puncture repair plugs
IPC: B29C73/06
Filed: 1965-10-05
Abstract: 1,141,194. Puncture repair plugs. A. LEGG. 4 Oct., 1966 [5 Oct., 1965], No. 42317/65. Heading B7C. A puncture-repair plug, preferably of latex rubber, comprises a thinner-walled part 4 which in use is folded back about a body 2, an insertion tool being locatable about a waisted portion 8. The plug periphery may be ribbed as at 12 or smooth, and the body 2 optionally has a depressed region 10 whereby the folded plug has a circular cross-section. In a modification (Fig. 4, not shown) a part-cylindrical recess is provided in the body 2 in longitudinal alignment with the part 4 to form a secure seal with an adjacent circular-section plug.
Patent GB-1508147-A (GB)
Title: Symmetrical odd modulus frequency divider
IPC: H03K23/40
Filed: 1975-10-16
Abstract: 1508147 Frequency dividers RCA CORPORATION 16 Oct 1975 [29 Oct 1974] 42520/75 Heading G4D A circuit for dividing by an odd number m comprises n clocked bi-stables connected as a shift register with the input pulses applied by an inverter to the clock input of the nth bistable and directly to the clock inputs of all the 1st to n-1th bi-stables, with the output derived by an AND gate 25 from the outputs of the nth and n-1th bi-stables, and with the outputs of the n-1th and n-2th bi-stables connected to control the state of the 1st bistable. To divide by m there must be n=(m+3)/2 bi-stables. Fig. 2 shows a circuit for dividing by three using D-type bi-stables. The first stage is controlled via a NAND-gate 27. To divide by larger numbers stage 21 is replaced by a multi-stage shift register. If instead J-K bi-istables are employed the output of the n-1th bi-stable is connected directly to the K-input and that of n-2th by an inverter to the J-input of the first bi-stable. The circuit provides a symetrical output waveform and unlike a known circuit (Fig. 1, not shown) does not produce any spurious pulses.
Patent GB-1327251-A (GB)
Title: Hand held magnetic transducer
IPC: G11B5/127
Filed: 1970-09-04
Abstract: 1327251 Magnetic heads LITTON BUSINESS SYSTEMS Inc 4 Sept 1970 [4 Sept 1969 16 Sept 1969] 42581/70 Heading G5R A head 10, Fig. 7, is supported in the hand by pressing the thumb and forefinger into two dimples 146, Fig. 1, provided in the walls of the head housing. Inductive coupling variations between the head 10 and a record 162 as a consequence of poor setting of the head as it is moved relative to the record are minimized by shaping the tips 102, 90, Fig. 4, of the core positions 92, 94, 78, 80 so that the transducing surface facing the record is spherical.
Patent GB-958182-A (GB)
Title: Improvements in purifying apparatuses for separating solid particles from a gas
IPC: B04C3/00
Filed: 1962-11-12
Abstract: 958,182. Centrifugal separators. T. C. BIETH. Nov. 12,1962 [Nov. 30,1961], No. 42632/62. Heading B2P. In a separator for removing solid particles from a gas by causing the gas to flow along a helical path through a drum 1 and discharging the separated particles through an annular slot 16 provided between the drum and a gas discharge tube 12, the portion 15 of the discharge tube which projects into the drum is in the form of a body of revolution having a generatrix formed by an arcuate line convex towards the tube axis and the slot 12 opens into a closed chamber 2 for the collection of the solid particles. The axial extension a of the slot 12 is approximately equal to or smaller than the radius b of the drum while its radial opening 18 is larger than its radial opening 17, the radial extension c of the latter being between one-fifth and one-sixth of the radius b. The particle-laden gas enters the separator through a chamber 6 where some of the particles are separated as the direction of the gas flow is reversed to enter the funnel-shaped portion 5 of the tube 1 in which whirling vanes 5a are provided. The vanes are mounted at one end of a rod 25 secured at its other end in a support 28 from which it can be detached by removal of the wedge 26 to facilitate cleaning. A formula and a diagram are given to determine the shape of the generatrix for the tube 12. One, or a number of such separators in parallel may be connected to a central heating boiler for purifying gases.
Patent GB-1146064-A (GB)
Title: Tubular heat exchangers
Inventor: POOLE RONALD ROBERTSON
IPC: F25B39/04
Filed: 1966-09-24
Abstract: 1,146,064. Heat exchange elements; refrigerators. GENERAL MOTORS Ltd. 3 Aug., 1967 [24 Sept., 1966], No. 42721/66. Headings F4H and F4S. Parallel pairs of the straight portions of a sinuous tube 2 extend each through one of a plurality of transverse rows of slots 3 formed in a channelled sheet 4 of steel or aluminium, and the proportioning of the slots and channels is such that the tube is held in contact with the bases of the channels (see Figs. 3, 4). As shown in Fig. 2, for use as an evaporator or condenser in a refrigerator, louvres 7 are formed in the base of each channel. Fig. 6 shows the heat exchanger when used as a refrigerated shelf in a display or storage cabinet. A shelf member 9 is attached by cementing, to one side of the channelled sheet of the heat exchanger. To the other side of the sheet is attached a slab of heat-insulating material 10 and the assembly is then mounted on a support 11 of metal or plastics material.
Patent GB-1145133-A (GB)
Title: Process for treating polymeric material walls of minute capsules
IPC: B01J13/20
Filed: 1967-09-22
Abstract: 1,145,133. Treating microcapsules. NATIONAL CASH REGISTER CO. 22 Sept., 1967 [17 Oct., 1966], No. 43158/67. Heading B8C. The permeability to water of microcapsule walls is reduced by establishing an agitated aqueous system of microcapsules having waterswollen, hydrophilic polymer walls at least partly composed of polypeptide material and introducing into the system an aqueous solution of a simple salt of uranium or vanadium or of a double salt containing divalent uranium or vanadium. A plasticizer, e.g. a plant gum, sugar, polyhydric alcohol or highly polar hydrophilic solvent e.g. phthalonitrile, acetamide, formamide, DMSO or dimethyl formamide, may be included in the capsule walls either during the capsule manufacture, during the above-described treatment or subsequently. Specified polymeric materials are gelatin, collagen and derivatives thereof and zein. Suitable salts are uranyl and vanadyl nitrate, acetate, sulphate and halides, and ammonium uranyl carbonate.
Patent GB-1147087-A (GB)
Title: Method for preparing aliphatic trienes
IPC: C07C2/04
Filed: 1966-09-28
Abstract: 1,147,087. 1,4,9-Decatrienes. B. F. GOODRICH CO. 28 Sept., 1966 [28 Sept., 1965 (3)], No. 43213/66. Heading C5E. 1,4,9-Decatrienes are prepared by reacting a conjugated diene containing 4 to 6 carbon atoms with ethylene in the presence of a catalyst comprising nickel in a reduced state prepared by reacting together a nickel compound; and a reducing agent which is a group 1A IIA or III A  metal or hydride, alkyl or alkyl halide derivative thereof; and an aryl halide, a sulphone or SO 2 . The nickel compound is preferably nickel acetylacetonate and the reducing agent triisobutyl aluminium but many alternatives are listed. The reaction may be carried out at 25-250 C. and 100-5000 p.s.i.g. Examples describe the preparation of 1,4,9-decatriene from butadiene-1,3 and ethylene, cyclodecadiene-1,5 being formed as a by-product, and dimethyl 1,4,9-decatriene from isoprene and ethylene. Reference has been directed by the Comptroller to Specification 977,108.
Patent GB-1497404-A (GB)
Title: Painter's and decorator's rollers
IPC: B05C17/02
Filed: 1975-10-31
Abstract: 1497404 Paint roller E R A SPENCER 31 Oct 1975 [5 Oct 1974] 43293/74 Heading F2U Paint roller has a resilient core, to enable non-flat surfaces, to be painted, in the form of a helical spring 1 laced together by an axially extending wire 2. The wire may extend in alternate axial directions as shown or be in the form of an opposite hand helix. The spring 1 is mounted on a spindle 3 by means of end caps 4 which also clamp the outer covering, e.g. of sheepskin, to the core.
Patent GB-1192410-A (GB)
Title: Improvements relating to Hinged Ventilators
Inventor: RILEY DEREK ARNOLD
IPC: E06B7/06
Filed: 1967-12-15
Abstract: 1,192,410. Ventilators. BECKETT, LAYCOCK & WATKINSON Ltd. 18 Sept., 1968 [15 Dec., 1967], No. 44368/68. Divided out of 1,192,409. Heading F4V. A hopper ventilator comprises a frame mounted in a re-entrant portion of a glass pane 10, a ventilator pane or panel 16 pivoted at 20, side walls 38 riveted to the side members of the frame, each wall 38 being provided with a rail 39 having spaced notches, and the upper corners of the pane 16 having detent devices 44 with plungers 45 which are spring urged into contact with the rails 39. Each device 44 is slotted on to the corresponding corner of the pane 16 and is held thereon by engagement with the walls 38. Only one side wall 38 and detent device 44 need be provided.
Patent GB-1173179-A (GB)
Title: Method of Producing Micro-Perforated Stainless Steel Sheets
Inventor: RUBEN SAMUEL
IPC: A47G19/02
Filed: 1967-09-29
Abstract: 1,173,179. Semi-permeable membrane; gas diffusion membrane. S. RUBENS. 29 Sept., 1967, No. 44370/67. Headings B1L and B1X. [Also in Divisions C7 and G2] Microperforated stainless steel sheet produced electrolytically (see Division C6-7) is impregnated with microporous-membrane-producing material to provide an element for use in dialysis or gaseous diffusion. Examples of such materials are polystyrene, co-polymers of polyvinylchloride and acrylonitrile, silicones, polyvinyl alcohol, cellulose esters and gelatine. Inorganic materials may also be used, for example, sodium silicate solutions, in which case the dried, treated sheet is subjected to acid to dissolve out the sodium and leave a microporous insoluble silica membrane. Thin fluorocarbon coatings may also be used to form permeable membranes.
Patent GB-1446755-A (GB)
Title: Method for seasoning lumber
IPC: B27K1/02
Filed: 1973-09-25
Abstract: 1446755 Seasoning lumber H IZUMI 25 Sept 1973 [18 June 1973] 44934/73 Heading F4B Lumber 14 is seasoned by subjecting it to heat and pressure by saturated water vapour alone within a pressure vessel 11 until the lumber interior is heated up to a predetermined temperature of at least 110‹ C., the vapour then being removed, and the pressure within the vessel being reduced below atmospheric pressure thereby causing water contained in the lumber to boil. As shown, lumber 14 is loaded on a wagon 15 guided by rails 13 in the vessel and a door 12 closed. Vapour is then introduced through vapour jet pipes 16 for a specified period displacing air within the vessel through a release port 18 whereafter the port is closed. After a period the release port 18 is again opened to release the vapour. The vessel 11 is then subjected to vacuum through a port 17. The lumber may be initially subjected to preliminary vapour boiling at a temperature of 105‹ C. The seasoning process may be repeated. A period of natural seasoning may follow the above seasoning.
Patent GB-995268-A (GB)
Title: Improvements in and relating to screw fastenings and a tool for locking same
IPC: F16B39/32
Filed: 1962-11-29
Abstract: 995,268. Tools for operating nut and bolt locking devices. K. ITO. Nov. 29, 1962 [Dec. 12, 1961], No. 45253/62. Heading B4W. [Also in Division F2] A tool for moving a locking ball 5 into position in the thread groove of the bolt 2 so as to bear against the inclined face 4 of the nut 3 comprises a head 7 adapted to fit closely over the projecting end of the bolt 2 and having a chamfered leading edge 11 provided with a groove 6 to receive the ball 5. In a modification, Fig. 8 (not shown), for use with bolts which extend only a little beyond the nut, the tool has a head of cylindrical form provided with internal threads and a leading edge of which the chamfer is cut away to form a face adapted to engage the ball, the profile of the remainder of the leading edge being sloped at an angle corresponding with the pitch of the thread.
Patent GB-960557-A (GB)
Title: Improvements in valve assemblies for aerosol spray cans
IPC: B65D83/16
Filed: 1962-11-30
Abstract: 960,557. Discharging liquids under gaseous pressure. P. DRUMMOND. Nov. 30, 1962, No. 45354/62. Heading FIR. [Also in Division F2] A valve assembly for an aerosol is mounted in a supporting cup 15 which acts as a closure member for the aerosol container. A valve body 31 is secured to the cup 15 so that the bore 29 within the body is in alignment with a perforation in the bottom 59 of the cup 15 which extends under the valve body 31. A symmetrically formed valve plug 45 has convex sealing portions 46 and cylindrical portions 48 separated by a fluted central portion 47. The portion 46 at one end engages a convex valve seat 33 and at the other centres a spring 53. A pin 50 connects the valve plug 45 with an operating flap 23 and when the flap 23 is depressed liquid from the container passes between the lands 52 of the central portion 47 through an axial slot 43 into an annular chamber 41 and through the orifice 70.
Patent GB-1380813-A (GB)
Title: Semiconductor devices
IPC: H01J29/44
Filed: 1972-10-03
Abstract: 1380813 Semi-conductor radiation detectors ENGLISH ELECTRIC VALVE CO Ltd 19 Sept 1973 [3 Oct 1972] 45438/72 Heading H1K X-rays generated in the target area of a semi-conductor crystal 30, Fig. 2, adapted to detect an electron beam are prevented from reaching the X-ray sensitive interface between the crystal 30 and an oxide passivating layer 36 by the presence of X-ray absorbing material between the target area and the sensitive interface. In the Si crystal shown, which has a P-N junction between the bulk 30 of the crystal and a diffused surface zone 34 and whose upper and lower surfaces carry metallization 38, 32, a Au or Pb layer 40 is provided in a recess around the target area to protect the surrounding oxide/Si interface. The crystal may be one of a pair of targets 18, Fig. 1, of an "electron beam semi-conductor amplifier" which also includes, in a vacuum tube, a cathode 10, focusing electrodes 12-16 to produce a laminar beam, a ground plate 26 and a meander line 24 which carries an r.f. signal to be amplified, which signal deflects the laminar beam between the two targets 18, each of which generates a current proportional to the fraction of the total beam incident upon it.
Patent GB-1038517-A (GB)
Title: Improvements in and relating to paging receivers
Inventor: MORTON ROY
IPC: G08B3/10
Filed: 1963-11-18
Abstract: 1,038,517. Radio signalling. FLIGHT REFUELLING Ltd. Oct. 30, 1964 [Nov. 18, 1963], No. 45473/63. Heading H4L. In a battery-operated portable radio receiver responsive to a calling tone or tones, in order to conserve the battery, means are provided for automatically switching the receiver " on " and " off " for predetermined periods and for locking the receiver " on " upon the receipt of the appropriate calling signal, the output stage of the receiver drawing current only when the receiver is locked " on " and the remaining circuits drawing current only during the predetermined " on " periods and during the locked " on " state. As shown in Fig. 2, a paging receiver 2 to 10 is provided with a complementary pair transistor multivibrator 16, Fig. 3 (not shown) which in the " standby " position of switch 25 and the absence of the appropriate calling signal causes the battery supply for the receiver circuits 2 to 9 to be interrupted. In this position the switch 25 also disconnects the output stage 10 and converts it into an A.F. oscillator. The output of the amplifier 8, in addition to supplying the output stages of the receiver, supplies an amplifier and resonant reed unit 13 responsive to the calling signal, which via a transistor switch 15 locks the multivibrator 16 in its " on " position on receipt of the correct calling signal to maintain the supply current for the receiver. This causes the oscillator 10 to produce an audible note in the loud-speaker and when the switch 25 is moved to the " receive " position the receiver is operative for normal speech reception. In an alternative arrangement, cessation of the tone signals causes the multivibrator to revert to its normal switching cycle.
Patent GB-1262789-A (GB)
Title: Improvements in or relating to gland packings
Inventor: DODONOV NIKOLAI TIMOFEEVICH
IPC: F16J15/20
Filed: 1969-09-16
Abstract: 1,262,789. Seals. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY I KONSTRUKTORSKO-TEKHNOLOGICHESKY INSTITUT ABESTOVYKH TEKHNICHESKIKH IZDELY. 16 Sept., 1969, No. 45489/69. Heading F2B. A gland packing includes a cord comprising fibres of polypropylene or polyamide which have been treated with an anti-friction additive and with a natural or synthetic resinous material to adhere the fibres together. The fibres may be braided and simultaneously sized with P.T.F.E., a butadiene-styrene rubber or a polyisoprene rubber and with antifriction additives of boron nitride, graphite or molybdenum disulphide. The cord may be formed around a central core of asbestos fibres.
Patent GB-1247667-A (GB)
Title: Photographic stabilizing compositions
Inventor: O'NEILL ALAN DENNIS
IPC: G03C5/39
Filed: 1967-10-06
Abstract: 1,247,667. Photographic stabilizing compositions. KODAK Ltd. Oct.3, 1968 [Oct. 6, 1967], No. 45652/67. Heading G2C. A photographic silver halide stabilizing composition contains a water-soluble thiocyanate and a thioether silver halide solvent by which is meant an organic thioether compound which in 0.02 molar aqueous solution at 60‹C. is capable of dissolving more than twice the weight of silver chloride that dissolves in the same volume of water at 60‹C. The composition preferably contains 0.25 to 40 per cent by weight, based on the total weight, of the thiocyanate, and 0.25 to 20 per cent by weight, based on the total weight, of the thioether. The thioether preferably contains at least one -O-CH 2 -CH 2 -S- grouping and preferably 2 or 3 thioether atoms. Examples of the thioether compound given are 1, 8-dihydroxy -3, 6-dithia-octane, 1,10-dithia-4, 7, 13, 16- tetraoxacyclooctadecane, 3, 5-dioxa-6, 9, 12- trithiaheptadecane and 10, 13-diaza-3, 20-dioxa- 9, 14-dioxo-6, 17-dithiadocosane. The composition may include a water-soluble sulphite compound, i.e. a sulphite or similar compound such as a bisulphite, metalisulphite or dithionite. Compositions of the invention are particularly valuable for stabilizing images obtained by photodeveloping latent images formed in 'direct-point' emulsion layers (see Examples). The silver bromoidide emulsion in Example 1 contains ethylene thiosirea and cuprous iodide.