baber/WOPTO huggingface dataset:
Patent GB-1392189-A (GB)
Title: Treatment of pigments
IPC: C09D17/00
Filed: 1971-10-22
Abstract: 1392189 Surface treated pigments LAPORTE INDUSTRIES Ltd 19 Oct 1972 [22 Oct 1971] 49291/71 Addition to 1334711 Heading C1N [Also in Divisions C3R and C3P] Pigments are surface treated with 0À1-60% by wt. of a polylactone in liquid form or in solution. TiO 2  pigments treated with polylactones having terminal OH groups are disclaimed. The preferred polylactone is polycaprolactone with terminal COOH groups. It may be added in solution in chloroform or ethyl acetate, or in aqueous emulsion, or in liquid form, to an aqueous slurry of the pigment, or it may be added in solid form to a slurry at a temperature such that it melts. The pigment is then dried and may be fluid energy milled. Lubricants, e.g. Mg, Zn or Al stearate, stearic acid, polyethylene wax, or paraffin oil, and various surfactants, may also be added. The pigment may initially be surface coated with oxides, phosphates or sulphates of Be, Ca, Mg, Ba, B, Al, Si, Sn, Pb, Sb, Ti, Zr, Hf, Nb, Ta, Mn, Zn or Ce, by conventional methods. In the examples, the pigment is rutile TiO 2  coated with Al 2 O 3  or Al 2 O 3  + SiO 2 .
Patent GB-1093077-A (GB)
Title: Electrolytic machining and grinding apparatus
IPC: B23H3/06
Filed: 1964-12-04
Abstract: <PICT:1093077/C6-C7/1> <PICT:1093077/C6-C7/2> In electrolytic machining and electrolytic grinding using alternating current, the tool electrode is composed either of a metal containing graphite or of an electrically insulating material whose surface is coated with carbon particles. The electrode may be composed of grey Fe including 2 to 5% by weight graphite or of sintered alloys containing graphite and Ni, Fe, Cu, Pb or Pb and Sn.  Such alloys may contain (a) 80 to 90% by weight of Ni, Fe or Cu and the balance graphite, (b) 10 to 40% graphite and the balance Cu, or (c) 50% Pb, 40% Sn and 10% graphite. An aqueous NaCl (e.g. 20%) or KCl electrolyte may be used. Workpieces may be of sintered WC alloys e.g. WC-Co, WC-TiC-Co, WC-TaC-Co, sintered W alloys e.g. W-Ag, W-Cu or be of Ag, Cu or brass. Fig. 2 shows a workpiece 1, machining electrode 2, electrolyte circulated by a pump 9 and a reservoir 11 of gas for mixing with the electrolyte. An A.C. supply 15, the rectifier 22 and the resistance 23 provide an electrolyzing current having the waveform shown in Fig. 1b.  The electrode 2 is moved by a pinion 26 controlled by a device 27 which maintains the electrode-workpiece gap at a predetermined magnitude. The device compares a reference voltage from a source 30 with a rectified voltage across the machining gap. Fig. 6 (not shown) illustrates electrolytic grinding using a rotating electrode disc with the work being fed towards the disc as the grinding proceeds.
Patent GB-1105276-A (GB)
Title: Production of chromium steels
IPC: C21C5/00
Filed: 1965-11-23
Abstract: Cr-steel is produced by heating a charge of Cr-bearing steel scrap rapidly to at least 1315 DEG C. by means of an oxy-fuel lance, adding hot ferrous metal containing silicon to reduce chromium oxides formed during the heating and then increasing the temperature of the molten metal to at least 1538 DEG C. by the introduction of oxygen to effect reduction of remaining impurities in the melt. The hot ferrous metal may be blast furnace or cupola iron.  In the final step, if the temperature exceeds 1760 DEG C. coolants e.g. scrap are added.
Patent GB-1330854-A (GB)
Title: Radiographic silver halide material
IPC: G03C1/815
Filed: 1970-10-20
Abstract: 1330854 Photographic silver halide material EASTMAN KODAK CO 20 Oct 1970 [21 Oct 1969] 49722/70 Heading G2C [Also in Divisions C4 and H5] A photographic light sensitive material comprises a film support made by extrusion of a liquid melt comprising a film-forming polymer and an ultraviolet light-absorbing compound of the formula: - wherein A is CN, p-nitrophenyl, p-cyanophenyl or -CO-R, R being amino, substituted amino, alkoxy, aralkoxy, alkyl, aryl or heterocyclyl; B is H, alkyl, aryl, aralkyl or alkaryl; D is = C (R)-, [=C(R')-] x , hydrozinylidene, -(CH 2 ) y  -C(R<SP>1</SP>) = or -Ar-C (R<SP>1</SP>) = where Ar is aryl and R<SP>1</SP> is H, alkyl, phenyl or substituted phenyl, x is 1, 2 or 3 and y is 1, 2, 3 or 4; W isC-C single load or a methylidene group; Q is alkyl, dimethylamino, aryl or heterocyclyl; and D, W and Q together may form a cycloalkylidene group having 5 to 6C atoms, and coated on opposite sides thereof silver halide layers each sensitive to ultraviolet rays.
Patent GB-1280324-A (GB)
Title: Improvements relating to engine governors
IPC: F02D41/04
Filed: 1969-10-10
Abstract: 1280324 Automatic control of speed ROBERT BOSCH GmbH 10 Oct 1969 [12 Oct 1968] 49752/69 Heading G3R The fuel injector 16 of an I. C. engine is adjusted by the output of a regulating amplifier 15 having one input from a regulator 13 in which a desired speed signal is compared with an actual speed signal and a second input from a signal representative of the setting of the injector (from a potentiometer 27). The regulating amplifier Fig. 5 (not shown) comprises a transistor differential amplifier in which the two inputs are compared and a transistor output stage which controls the energization of an outlet valve 83 in a hydraulic system 81 ... 85 and 21, 22 which adjusts the injector. The arrangement is such that loss of energization allows a spring 26 to set the injector to off. The speed is detected by an A. C. tachogenerator 12, and this is also connected to an overspeed circuit 20 comprising a bi-stable transistor circuit which changes its condition when an upper speed limit is reached and applies a voltage to the regulating amplifier which puts the injector to off. The engine must then be restarted, and a fusible link re-placed if such is provided. The control system operates within load/speed characteristics having non-linear boundaries, Fig. 3 (not shown).
Patent GB-1262560-A (GB)
Title: A method of stabilizing sodium hydrosulphite
IPC: C01B17/66
Filed: 1969-10-10
Abstract: 1,262,560. Stabilizing sodium hydrosulphite. MITSUBISHI EDOGAWA KAGAKU K.K. 10 Oct., 1969 [31 Jan., 1969], No. 49838/69. Heading C1A. Sodium hydrosulphite is stabilized by the addition of a hydrophobic aliphatic amine (or quaternary ammonium compound) having at least one C 5  or higher hydrocarbyl group. Suitable amines include primary, secondary and tertiary mono-amines, N-alkyl substituted diamines such as N-octyl ethylenediamine and N-stearyl propylenediamine, and as a quaternary ammonium compound octyl trimethylammonium chloride. The addition of the amino compound may be effected by washing or spraying the hyposulphite crystals with a solution of the additive in, for example, methanol, followed by drying. Usually 0À01 to 0À2% by wt. of the amino compound is added to the hydrosulphite.
Patent GB-1373917-A (GB)
Title: Analogue-to-digital converters
IPC: H03M1/00
Filed: 1971-10-27
Abstract: 1373917 Photo-electric dial-readers NORTHERN ILLINOIS GAS CO 27 Oct 1971 [1 March 1971] 49933/71 Heading G1A [Also in Division G4] The disclosures are identical with co-pending Specification 1373916, and the claims relate to the provision of an AID converter to indicate the angular position of a shaft and comprising energizing means including a source of radioactivity e.g. tritium and means e.g. a phosphor activated by the source to emit light energy, and sensing means including a plurality of sense elements responsive to the radiant energy, the sensing means and the energizing means being relatively rotated in operation in response to rotation of the shaft so that the radiant energy energizes different ones of the sense elements as a function of the angular position of the shaft. The sensing means each being in the form of two interlaced conductors with photo-resistive material in between.
Patent GB-1358058-A (GB)
Title: Control arrangement for microwave oscillators
IPC: H03B9/14
Filed: 1971-10-27
Abstract: 1358058 Gunn oscillators; frequency modulators MULLARD Ltd 27 Oct 1971 49956/71 Headings H3T and H3R In a control arrangement for a microwave oscillator of the type comprising a Gunn element; a body of gyromagnetic material (not shown) and an electromagnet M for applying a magnetic field to the gyromagnetic body, means Rm is provided for deriving a frequency dependent voltage which is a function of the electromagnet current and means Vs applies to the Gunn element a source of direct substantially constant voltage in series with the frequency dependent voltage whereby as the electromagnet energizing current increases the magnetic field and the oscillator operating frequency increase and the bias voltage Vb to the Gunn element decreases. The body of gyromagnetic material may be a YIG sphere. As the electromagnet energizing current Im is increased to increase the frequency of the oscillator, the voltage across a resistor Rm also increases in opposition to a stabilized D.C. supply Vs so as to reduce the D.C. bias Vb applied to the Gunn element. This provides increased output power from the oscillator. In a modification, Fig. 4, the frequency dependent voltage Vn is obtained across a resistor Re of an emitter follower E and a reference voltage Vr is supplied to a differential amplifier A together with the voltage obtained across the resistor Rm. In Fig. 4 the separate D.C. supply Vs may be omitted and some adjustment of the value of the emitter resistor Re would then be necessary. The gain and output voltage of the amplifier may be adjusted by negative feedback. The inputs from the sources Vm and Vr can be varied by potentiometers between the sources and the amplifier. The frequency of the oscillator may be swept over a frequency range by providing a sawtooth or other varying voltage Vr such as by a blocking oscillator or multivibrator. A first field may be provided by a first energizing coil or by a permanent magnet and a second energizing coil M provides the controllable field. Alternatively the entire field may be provided by a single coil.
Patent GB-1473440-A (GB)
Title: Electric power cables
IPC: H01B7/14
Filed: 1975-12-09
Abstract: 1473440 Power cables INTERNATIONAL STANDARD ELECTRIC CORP 9 Dec 1975 [17 Dec 1974] 50396/75 Heading H1A A power cable, e.g. for submarine use comprises a core 1, a metal sheath 2, an insulation layer 3, armouring 4 and a wire 6 passing through a sealed hole in the insulating sheath to electrically connect the sheath 2 to the armouring 4. Wire 6 is connected to sheath 2 before layer 3 is extruded thereover, an opening is made in layer 3 after extrusion, the wire pulled through, the hole sealed, the armouring applied and the wire connected to the armouring. Corrosion preventing layers may be applied over the armouring. A number of methods of locating the wire end beneath the insulation and of connecting the wire to sheath 2 and the armouring are described. The wires may be provided at a number of locations along the cable and two wires may be provided at each location. The wires may be insulated with the same material as the insulating layer is formed.
Patent GB-1105692-A (GB)
Title: Improvements relating to colour television mixing or switching apparatus
Inventor: WATSON GEORGE ROSS
IPC: H04N9/75
Filed: 1963-12-20
Abstract: 1,105,692. Automatic phase control systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. 2 Dec., 1964 [20 Dec., 1963], No. 50539/63. Heading H3A. Colour television or other signals to be mixed, e.g. for inlay or overlay display on a television screen, are phase compared to derive a D.C. output applied to vary the phase shift produced by a delay line in the path of one at least of the signals, to establish phase synchronism. Synchronizing bursts only of the colour signals may be phase compared, and the delay line phase shift may also compensate the phase shifts in the signal input switching selector. Several signals may be mixed and delay lines inserted in all but one of the paths. The delay lines may be motor or electronically controlled.
Patent GB-993825-A (GB)
Title: Improvements in carburetting devices for internal combustion engines
Inventor: MENNESSON ANDRE LOUIS
IPC: F02M17/09
Filed: 1963-12-23
Abstract: 993,825. Spray carburetters. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES. Dec. 23, 1963 [Dec. 27, 1962], No. 50693/63. Heading F1B. In a carburetter with a main throttle 2, Fig. 1, an auxiliary throttle 3 actuated by air flow and controlling a fuel metering needle 18 feeding a fuel nozzle 20, the air space in the float chamber 11 is connected by a connection 40 to the air inlet and by a connection 38 to the space 10 between the throttles, the connection 48 being controlled by a valve 42 actuated in accordance with load or throttle valve position. In Fig. 1 at low load valve 42, which is controlled in accordance with load by the suction downstream of throttle valve 2 acting through pipe 46 on a diaphragm 43, is open so that the pressure in float chamber 11 is reduced by the suction at the point 48. At high load, valve 42 closes, whereby the pressure in float chamber 11 increases to enrich the mixture. The change in pressure in the float chamber may be made more gradual by situating the connection 48 so that it passes from the downstream side of valve 3 to its upstream side as the valve 3 opens. In Fig. 6 the feed nozzle 24 is fed by a pump 23 which draws the fuel from a space 22 connected to passage 10. For a two-cylinder engine the mixture is made leaner at high power by arranging the valve 42a to open at high power to decrease the pressure in the float chamber. In Fig. 7 the valve 42a controlling the suction connection to the float chamber is controlled by a lever 49 on the spindle 6 of throttle valve 2.
Patent GB-1076700-A (GB)
Title: Improvements in methods for the dynamic polarization of the atomic nuclei of a solvent, in particular of a hydrogenated solvent, and in magnetometers for measuring the inensity of weak fields in particular of the earth magnetic field
Inventor: LEMAIRE HENRI
IPC: G01R33/24
Filed: 1963-12-24
Abstract: Tetramethyl - 2,2,6,6 - aza - 1 - cyclohexanone - 4 - oxide - 1, tetramethyl - 2,2,5,5 - aza-1 - cyclopentene - 3 - carboxamide - 3 - oxide-1, tetramethyl - 2.2.5.5 - aza - 1 - cyclopentaneoxide - 1, tetramethyl - 2,2,5,5 - aza - 1 - cyclopentanol - 3 - oxide - 1, tetramethyl - 2,2,5,5-aza - 1 - cyclopentanone - 3 - oxide - 1, tetramethyl - 2,2,6,6 - aza - 1 - cyclohexane - oxide-1 and tetramethyl-2,2,6,6-aza-1-cyclohexanol-4-oxide-1 are prepared by treating the corresponding amines with hydrogen peroxide with the presence of phosphotungstic acid.  Tetramethyl - 2,2,6,6 - aza - 1 - cyclohexanoneoxime-4-oxide-1 is prepared by reacting hydroxylamine with phorone.  Tetramethyl-2,2,6,6-aza-1 - cyclohexanol - 4 is prepared by reducing tetramethyl - 2,2,6,6 - aza - 1 - cyclohexanone-4 with lithium aluminium hydride and tetramethyl - 2,2,6,6 - aza - cyclohexane is prepared by the Wolff-Kishner reduction of tetramethyl-2,2,6,6-aza-1-cyclohexanone-4.
Patent GB-1282969-A (GB)
Title: Cylinder lock
IPC: E05B29/06
Filed: 1970-10-29
Abstract: 1282969 Locks YMOS-METALLWERKE WOLF & BECKER GmbH & CO 29 Oct 1970 [17 Nov 1969] 51570/70 Heading E2A  A lock has a barrel 1, Figs. 1, 3 and 5, having symmetrically offset passages 5, 6 formed therein to receive plate tumblers 3 and 4 respectively and a cylinder 10 which is provided with recesses 11a, 12a for the tumblers 3 and with recesses 11, 12 for the tumblers 4. The tumblers 3, 4 are movable in opposite direction and act in pairs. Webs 13, 13a formed between the recesses 11, 11a and 13, 13a respectively have aligned stop surfaces which are engageable by the tumblers. A spring 14 is provided for each tumbler and is positioned between a projection 17 of the tumbler and a strip 15 which is located in the barrel 1, the spring urging the tumbler into its respective recess 11a or 12. When a key 2, Fig. 4, having symmetrical recesses 8 and projections 9, is inserted into a keyway 16, Fig. 6, the tumblers having step 18, are moved to a unlocking position as shown in Fig. 3. In modifications a key 2, Fig. 11, (not shown), is non-reversible and release is effected in one direction of rotation thereof, a key 2, Fig. 12 (not shown), effects release in either direction of rotation, the plate tumblers 3, 4, Fig. 15 (not shown) are in two rows which are mounted eccentrically and are staggered, and a key 2, Fig. 22 (not shown), has each edge thereof milled so as to double the number of steps therein.
Patent GB-1459743-A (GB)
Title: Explosion suppression means
IPC: F42D5/05
Filed: 1972-11-09
Abstract: 1459743 Laminates F R PEGG 7 Feb 1974 [9 Nov 1972] 51677/72 Heading B5N [Also in Division F3] A shield for positioning over a bomb, for example, comprises a flexible blanket of woven high strength material. The shield may be provided with a cover 2, Fig. 2, straps 3 and corner handles 4, and has layers 10, Fig. 3, of woven ballistic nylon, for example, the strands or threads 11, Fig, 4, of each layer being at an angle relative to the strands or threads of the adjacent layer in a progressive manner. Each layer may be reinforced by high tensile woven metal wire e.g. wire mesh. The straps 3 are attached to the shield so as to form a skirt la which affords additional protection against the bomb.
Patent GB-1292281-A (GB)
Title: An electrostatic electroacoustic transducer
IPC: H04R19/01
Filed: 1969-10-22
Abstract: 1292281 Electrostatic transducers KUREHA KAGAKU KOGYO KK and PIONEER ELECTRONIC CORP 22 Oct 1969 [22 Oct 1968] 51817/69 Heading H4J An electrostatic transducer such as a loudspeaker has a fixed electret plate 2 of ceramic material, a vibratory plate or film 1 spaced from the plate 2.and an electrode 3 secured to or in contact with the side of the plate 2 remote from the film 1. The formula is satisfied, where d 0  is the gap between the film 1 and plate 2, d e  is the thickness of the plate 2, # 0  is the dielectric constant of the material of the gap and # e  is the dielectric constant of the electret material. The film 1 is electrically conductive or has an electrically conductive surface confronting the plate 2.
Patent GB-1433659-A (GB)
Title: Conveyor belt cleaner
IPC: B65G45/14
Filed: 1974-12-02
Abstract: 1433659 Cleaning endless conveyers SOUTHERN ENG SERVICES PTY Ltd 2 Dec 1974 52064/74 Heading B8A A cleaner for the non-working flight 8 of an endless conveyer comprises a pair of chains 12 on which are mounted scraper blades 13 of rubber, nylon or other flexible material. A frame 24 for the cleaner is resiliently mounted for up and down movement by pairs of parallel links 26, one of the links at each side of the frame 24 having an arm 28 connected to a base 27 by a tension spring 29. Material removed from the conveyer flight 8 by the cleaner falls into a collector tray 30 supported by arms 32 connected to the links 26, the tray thus being maintained in engagement with the blades 13 of the lower run of the cleaner. The blades 13 are removably secured in channel-sectioned bearers 35 received in carriers 38 bolted to the chains 12. A wedge pin 44 secures these members together but other fastenings may be used. To keep the blades erectile the carriers 38 have slipper-strips 45 which ride on tracks 46 adjustable for height. The working flight 17 of the cleaner runs in the same direction as the non-working conveyer flight 8 but at a different speed, preferably slower. A snubber 9 of the conveyer may drive sprockets 16 of the cleaner via gear-boxes 18, 20 and a telescopic drive shaft 19. A conventional preliminary cleaner (11) is provided, Fig. 1 (not shown). In a modification, Figs. 6, 7 (not shown) a support (48) for the cleaner comprises two platelike members adjustably mounted on standards (49) and spring-loaded bell-cranks (52). The snubber (9) is also cleaned by the blades (13).
Patent GB-1410626-A (GB)
Title: Clutch disengagers
IPC: B60K23/02
Filed: 1972-11-13
Abstract: 1410626 Clutch release bearings LUK LAMELLEN UND KUPPLUNGSBAU GmbH 13 Nov 1972 [12 Nov 1971] 52403/72 Heading F2L In a clutch release bearing in which limited radial movement is permitted to centre the bearing on the clutch axis means are provided to prevent rotation of the stationary race of the bearing whilst allowing this movement. In Fig. 1 the bearing 7 has a support comprising a member 4 and a sleeve 9, a radially extending portion 6 of the support carrying a stop 12, engaging a slot 13 of the stationary race 7b to hold this stationary. The members 4 and 9 have between them a cup spring 10 and a friction facing 11 to hold the bearing in its centred position. The inner race 7a of the bearing here engages the release members 8 of the clutch. In the embodiment of Fig. 4 the outer race 21a engages the clutch release members and an intermediate member 25 is provided between the bearing 21 and its support 22, this having two diametrically opposed tongues 25b engaging in slots 21c of the inner race 21b, and two diametrically opposed tongues 25c (on a line at right angles to that on which tongues 25b lie) engaging slots 22d in the support 22 so that the bearing is allowed to move relative to the support to compensate for misalignment, but not rotate. The bearing may be held on the support by a circlip 23 or alternatively a cup srping 24. An alternative embodiment is described similar to that of Fig. 4 but with the outer race held stationary. Another embodiment has the sleeve member 9 of Fig. 1 and an intermediate member similar to that of Fig. 4 (Figs. 3 and 5 respectively, not shown).
Patent GB-1218378-A (GB)
Title: Improvements in or relating to accelerators
IPC: H02K49/04
Filed: 1968-11-07
Abstract: 1,218,378. Accelerometers. ALFRED  TEVES G.m.b.H. Nov. 7, 1968 [Feb. 17, 1968], No. 52858/ 68. Heading G1N. An accelerometer, particularly for use on vehicle wheels in association with anti-ship systems, comprises a rotor 1, Fig. 2 consisting of an iron core 2 coated with a layer 3 of conductive, non- magnetic material, rotating between the poles 4, 5 of a permanent magnet whereby eddy currents are induced in the rotor which produce a secondary magnetic flux # q  coupling with coils 6a, 6b whose axes are parallel to the primary flux # H  . Thus, when the rotor speed changes, contact is induced in coils 6a, 6b whose polarities and amplitude indicate the sign and magnitude of the acceleration.
Patent GB-1183127-A (GB)
Title: Yarn Reeling Machines
IPC: B65H54/42
Filed: 1967-11-29
Abstract: 1,183,127. Securing bobbins on spindles. MASCHINENFABRIK RIETER A.G. 29 Nov., 1967 [29 Nov., 1966], No. 54281/67. Heading F2U. [Also in Division D1] Bobbin sleeves 10 are secured to the spindles 13 by pressure exerted on slidable tubes 49 and 52 causing deformable O-rings to become wedged between the bobbin sleeves and the slidable tubes. Pressure is normally exerted on the slidable tubes 49 and 52 by spring 48 acting on piston 47. The bobbin sleeves are released by passing pressure fluid through bore 54 into chamber 56 so as to move the piston 47 and end tube 49 to the right. The pressure fluid also operates the spindle brake by filling chamber 55 and moving piston 39 carrying brake lining 40 into contact with ring 36 carried on the rotating spindle part. The pressure fluid is prevented from releasing the bobbin sleeve during braking since the brake piston 39 covers a bore leading to chamber 56 during the time that ring 36 is being braked.