baber/WOPTO huggingface dataset:
Patent GB-960600-A (GB)
Title: Steering wheels
IPC: G01L5/16
Filed: 1960-09-30
Abstract: 960,600. Controlling aircraft; steering wheels. SPERRY RAND CORPORATION. Sept. 30, 1960 [Oct. 26, 1959], No. 33617/60. Headings B7G and B7J. A steering wheel is connected by two parallel diaphragms to a member rotatable about an axis, so that the wheel is also movable along the axis, the diaphragms being normal to the axis and being secured to the wheel at their rims, and resilient devices resist axial movement of the wheel to prevent accidental operation. The Figure is a cross-section of an aircraft pitch and roll control wheel, comprising a hub 14 and a part-circular rim 12. A fixed shaft 18 supports a core 24 on bearings 22 so that the core cannot move axially of the shaft, and the diaphragms 28, 30 are connected to the hub and core by bolts 32, 34. An E-type transformer 48 on core 24 co-operates with an armature 50 on hub 14 to produce an output signal representative of the axial force on the wheel, for pitch control, independently of where the axial force is applied to the wheel. An E-type transformer 54 on core 24 co-operates with an armature 56 on a hub cover 20 fixed to shaft 18, to produce an output signal representative of the tangential force on the wheel, for roll control. Opposed flat springs 38, 40 on core 24 co-operate with set screws 44, 46 with tapered ends, on hub 14, to provide adjustable pre-loading of the wheel to prevent response to accidental small axial forces and a post 70 on cover 20 engages a pre-loaded centering spring device 60 on hub 14 to prevent response to accidental small tangential forces.
Patent GB-1435971-A (GB)
Title: Apparatus for detecting particulate material in flow stream method apparatus for
IPC: E21B47/10
Filed: 1973-07-16
Abstract: 1435971 Acoustic detection of particles in a fluid MOBIL OIL CORP 16 July 1973 [12 Oct 1972] 33727/73 Heading H4D A probe for detecting the presence of particles in a fluid flow stream by responding to impingement of the particles on the probe comprises an acoustic transducer freely suspended in a housing filled with a non-compressible fluid. The Fig. 1 system for monitoring the presence of sand in the flow from an oil and/or gas well includes a transducer 20 suspended within an oil-filled housing 12 mounted at 11, 13, 14 so as to intersect the flow in conduit 10. The housing is coated with abrasion-resistant material. Signal frequencies in the band 650-750 kHz are extracted from the transducer output at 31, 32, then amplified at 33 and rectified at 34 to drive a chart recorder 35. Circuitry 36 (detailed in Fig. 6, not shown) is arranged to (a) operate a first visual or audio alarm if the signal amplitude remains above a given threshold value for greater than a given time, (b) operate a second alarm if the amplitude exceeds a given threshold more than a preset number of times within a given time interval and (c) integrate the rectified signal and operate a third alarm if the integrated signal (representing the cumulative amount of sand) exceeds a given threshold.
Patent GB-1523624-A (GB)
Title: Cultivation of plants growing singly in a separate plant bed
IPC: A01G31/00
Filed: 1975-08-13
Abstract: The method provides that in each case one seed kernel is sown in a cultivating bed, and the beds are situated closely together during the germination of the seed kernels. Thereafter, the beds are moved onto a conveyor belt (4) and pushed forwards in a cultivating channel (11). In the cultivating channel, the substances necessary for growth are supplied and drained at the base of the channel. The distance between the beds is enlarged in step with the increasing need of the plants for space during growth. <IMAGE>
Patent GB-936629-A (GB)
Title: Improvements in and relating to amplifiers employing transistors
Inventor: INSKIP FREDERICK ARTHUR
IPC: H03G1/00
Filed: 1960-10-03
Abstract: 936,629. Transistor amplifiers. MINISTER OF AVIATION. Jan. 3, 1962 [Oct. 3, 1960], No. 33822/60. Class 40 (6). The gain of a transistor cascade amplifier is controlled by an A.C. shunt across the output of the input stage. As described, automaticgain control is applied to an I.F. amplifier by applying the D.C. gain control signal derived from diode D to the base of a transistor TS, the emitter-collector path of which is in series with capacitor C to shunt the output from transistor TI. A resistor X, Fig. 1, or a further transistor, Fig. 2 (not shown), may be included between the input stages TI and the output stage TO to reduce the changes in capacitance in the output circuit with changes in gain. A variable impedance diode or a manuallyvariable resistor may alternatively be used as shunts in place of transistor TS.
Patent GB-608668-A (GB)
Title: Process for rendering fibrous cellulosic substances and articles made therefrom fireproof
IPC: D21J1/08
Filed: 1945-12-13
Abstract: A fireproof plastic composition contains cresol - formaldehyde, benzal chloride, ortho dichlorobenzene, shredded bagasse and ammonium metaborate.  Cresol-formaldehyde may be replaced by cellulose aceto-butyrate, polymethyl-methacrylate, polystyrene, polyvinyl alcohol, phenolurea - formaldehyde, polyvinyl acetate, polyvinyl choride and copolymers of vinyl acetate and vinyl chloride.  Benzyl chloride may replace benzal chloride.  Shredded bagasse may be replaced by paper, paper pulp, chemical or mechanical wood pulp, wood fibres, wood chips, sawdust, bambou, balsa wood, cork, sisal, hemp, flax, esparto, reeds, straw, liquorice root or coir.
Patent GB-394235-A (GB)
Title: Improvements in chain conveyors
IPC: B65G17/08
Filed: 1932-11-30
Abstract: 394,235. Conveyer chains. BAGSHAWE & CO., Ltd., Dunstable Works, Dunstable, Bedfordshire, and FLYNN, A. J., 7, Lansdowne Road, Luton. Nov. 30, 1932, No. 33907. [Class 24.] Conveyer chains are formed of solid or block links 4 bored to have a bearing directly on a pivot formed by two bosses 5, 8 on side links 1, 2. The bosses have shouldered and recessed abutting ends, and are bored to take the connecting pin 3. The conveyer elements 11 are carried by the block links 4.
Patent GB-849895-A (GB)
Title: Improvements in or relating to magnetic information storage arrangements
Inventor: STARR ARTHUR TISSO
IPC: G11C7/02
Filed: 1958-10-23
Abstract: 849,895. Circuits employing bi-stable magnetic elements. STANDARD TELEPHONES & CABLES Ltd. Oct. 23, 1958, No. 33933/58. Class 40 (9). [Also in Groups XXXVIII and XL (c)] A number of ferrite cores 19, 20, 21, Fig. 4, of different diameters are linked by common signal and sampling windings 22, 23. With the ampere turns at any level 11, Fig. 2, determined by the signal, only one core is switched from a state of negative saturation to positive saturation by a sampling pulse. The strength of the signal determines the core to be switched. The cores are linked by windings 24, 25, 26, &c., so that each core gives a characteristic coded signal on a number of output leads as it switches. In Fig. 2 the hysteresis loops of cores 19, 20, 21 are represented by 5 and 6, 7 and 8, 9 and 10. If the signal produces ampere turns represented by 11, sampling ampere turns equal to the spacing between lines 6, 8, 10 at the lower ends trigger only the core 20 corresponding to the loop 7, 8. An equivalent arrangement, Figs. 6, 7, comprises a hole 29 and four holes 30 defining magnetic circuits 19, 20, 21 in a ferrite plate 28. Specification 849,894 is referred to.
Patent GB-1445218-A (GB)
Title: Dewatering process for sewage sludges containing biological solids
IPC: C02F11/127
Filed: 1974-08-01
Abstract: 1445218 Dewatering sewage sludges HERCULES Inc 1 Aug 1974 [2 Aug 1973 2 Oct 1973] 33995/74 Heading C1C [Also in Division C3P] Sewage sludges containing 0À5 to 10% solids, at least 30% of which are biological, are dewatered by mixing with a copolymer of acrylamide and #-methacryloyloxyethyltrimethylammonium chloride having a reduced specific viscosity of at least 15, as measured at 0À1% concentration in 0À1 N KCl solution; the slurry formed is then dewatered, preferably by vacuum filtration or centrifuging Preferred copolymers contain 15-90 mol per cent, particularly 25- 50 mol per cent, of #-methyacryloyloxyethyltrimethylammonium chloride and 85-10 mol per cent, particularly 75-50 mol per cent, of acrylamide. The quantity of copolymer used is preferably 2-20 pounds/ton of sludge solids on a dry basis.
Patent GB-1479953-A (GB)
Title: Arrangement for guiding a rapidly rotating foil serving as a record carrier
IPC: G11B17/34
Filed: 1974-08-01
Abstract: 1479953 Flexible disc recording/playback apparatus LICENTIA PATENT-VERWALTUNGS-GmbH 1 Aug 1974 [2 Aug 1973] 34015/74 Heading G5R A rotating circular recording medium, in the form of a flexible foil 1, is guided so that the recording surface of the foil forms a stationary curvature relative to the surroundings, with an apex line S extending along a diameter of the foil, by an arrangement wherein the foil is guided in two separate regions extending along the apex line on the concave side of the foil by guide elements 6a, 6b and, in sectors of the foil (shaded in Fig. 1) having centre lines K at right angles to the apex line S, by air cushions formed by air flow between the foil 1 and guide surfaces 7, the guide surfaces 7 having such dimensions that regions of the foil extending up to the periphery of the guide surfaces are not located over said guide surfaces 7 and are supported by neither the air cushions nor the guide elements 6a, 6b. The concave lower surface of foil 1 has a magnetic coating and the foil is supported by air cushions over an elongate support 7, having a flat or convex upper surface and extending perpendicular to apex line S, and air cushions over elements 6a, 6b. The elements 6a, 6b are movable up and down and pivotable about horizontal axes. The supporting surface of element 6a has greater curvature than that of element 6b, element 6a being a record/playback head movable parallel to apex S to scan a spiral track on the magnetic coating of foil 1; alternatively both of elements 6a, 6b may be scanning heads.
Patent GB-784898-A (GB)
Title: Apparatus for developing and/or fixing photographic printing material
IPC: G03D5/06
Filed: 1955-11-29
Abstract: 784,898. Photographic processing apparatus. CHEMISCHE FABRIEK L. VAN DER GRINTEN, N. V. Nov. 29, 1955 [Nov. 30, 1954], No. 34194/55. Drawings to Specification. Class 98(2) Apparatus for applying liquid to both sides of a sheet of photographic material such as diazotype paper comprises two liquid-applying rollers of diameter at least 15 mm. and length at least 30 times their diameter, at least one of the rollers being at least partially supported by the other roller and being flexible lengthwise so that if supported only at its ends it sags under its own weight by at least 0.1 per cent of its length. The flexible roller may be a tube such as of rubber closed at both ends, and this may be partially or completely filled with liquid (e.g. water, aqueous solutions or mercury), air under pressure, sand or gunshot. Alternatively the walls of the tube may be supported by a continuous row of rings or discs, by a spiral spring or by a number of solid cylinders ball-andsocketed together. If it is desired to provide the roller with trunnions by which it may be supported in bearings in the apparatus, the tube may be provided with a rigid core and the space between the core and the tube filled with a row of rings of outer diameter less than the internal diameter of the tube and with central holes of greater diameter than the core. Alternatively, the space may be partially or completely filled with liquid or granular bodies. The liquid may be divided into compartments by discs secured to the core. Two rollers only may be used, one rotating in a trough of liquid and supporting a flexible roller whose surface is provided with capillary recesses which are filled with liquid from the first roller when no sheet is between the rollers. Alternatively, two rollers may rotate in liquid and support between them either one flexible roller or two rollers one or both of which may be flexible. A doctor roller may be provided to remove excess liquid from one of the feed rollers. Any of the rollers may be provided with capillary receses such as pits or grooves. Specifications 656,674, 698,080 and 701,559 are referred to.
Patent GB-504479-A (GB)
Title: Improvements in and relating to ships' davits
IPC: B63B23/04
Filed: 1937-12-10
Abstract: 504,479. Davits. SCHAT, A. P. Dec. 10, 1937, No. 34217. Convention date, Dec. 10, 1936. [Class 115] A luffing davit is in the form of a four-bar chain, the suspension point 33 being carried on an extension 8. of the top bar 2, this extension being bent downwardly from the direction of the bar 2. During the luffing movement the extension 8 turns through an angle not less than that moved by the bar 1.
Patent GB-1347442-A (GB)
Title: Electrolytic capacitors
IPC: H01G9/048
Filed: 1972-07-21
Abstract: 1347442 Coating by vapour deposition; oxidized aluminium SPRAGUE ELECTRIC CO 21 July 1972 [21 July 1971] 34253/72 Headings C7F and C7U [Also in Division H1] An electrode of high effective surface area for an electrolytic capacitor comprises a conductive substrate 20 a layer 21 of aluminium oxide on the substrate 20 treated to produce cracks 23 in its surface and a layer 24 of aluminium or tantalum deposited e.g. by vapour deposition and in contact with substrate 20 through the cracks. Substrate 20 may be aluminium foil or a deposited aluminium film on the surface of which a hydrous aluminium oxide film is formed by treatment with hot water, the cracked structure being then formed by heating at 400 to 650‹ C. The electrode may be a cathode or anode and in the latter case layer 24 is anodized by known methods.
Patent GB-844964-A (GB)
Title: Levelling instrument with automatic compensation for small inclinations of the instrument
IPC: G02B27/64
Filed: 1957-11-04
Abstract: 844,964. Stabilizing line of sight; levels. HENSOLDT & SOHNE, OPTISCHE WERKE A. G., M. Nov. 4, 1957 [Nov. 2, 1956; March 14, 1957], No. 34280/57. Classes 97(1) and 97(2) Automatic compensation for small inclinations of a levelling instrument is provided by at least one afocal pair of lenses, of which one lens is fixed to the instrument, and the other is pendulously suspended about an axis perpendicular to the optical axis of the instrument, and spaced from the principal point of the lens by a distance equal to the focal length. There may be n such pairs of lenses, the pendulous lenses of each pair being pivoted about a common axis, so that where ri is the distance of the principal point of the ith pendulously suspended lens from said axis, #i being the refractive power of this lens, and n being the number of lens pairs. When a further optical system, for example a mirror or prism is fixedly arranged in front of the i<th> lens pair, the condition to be satisfied is where Ni is the magnification of the further optical system. As shown in Fig. 1 a, the telescope 1 of a levelling instrument, having a graticule 2 between the objective and eyepiece has attached thereto a device 4, carrying a fixed negative lens 5 and a positive lens 6 of numerically equal focal lengths. Lens 6 is pendulously suspended by balance weights 8, 81 about an axis 7, orthogonal to the optical axis and spaced from lens 6 by its focal length, so that upon small inclinations of the instrument, the lenses 5, 6 act as an optical wedge, and ensure that a horizontal ray from a target remains focused on the graticule 2. In the arrangement of Fig. 2, the lens pair 21,22 are mounted between fixed prisms 20,24 and lens 21 is pendulously suspended under its own weight from an axis 23. Fig. 3 shows two lens pairs 30,31 and 32,35, the lenses 31,33 being pendulously suspended from a shaft 34, disposed at a distance from each of the pendulously suspended lenses equal to half the focal length thereof. A roof edge prism may be disposed between the lens pairs, or between the second lens pair and the telescope objective. In Fig. 11, a telescope 102 is shown, which is rotable about a vertical axis on a base which can be levelled by adjustable feet 100 and a bubble level 110. Light enters the telescope through rotatable wedges 108, and is directed upwards by prism 107, and compensation for small deviations from the vertical is effected by afocal lens pairs 112,113 and 114,115, the lenses 113,114 being pendulously suspended by three threads 120. Specification 721,434 is referred to.
Patent GB-1066033-A (GB)
Title: Improvements in or relating to blind rivet fastening devices
Inventor: SUMMERLIN FREDERICK ARTHUR
IPC: F16B19/10
Filed: 1963-08-30
Abstract: 1,066,033. Riveted joints. AVDEL Ltd. Aug. 27, 1964 [Aug. 30, 1963; Oct. 30, 1963], Nos. 34402/63 and 42776/63. Heading B3U. [Also in Division F2] In a blind rivet device, a mandrel head 16, which may bear ribs 28 and grooves 27, first draws a sleeve 14 into a hollow rivet 13 so that the tail of the latter is expanded and then enters the sleeve, Fig. 11, to expand the sleeve and the rivet tail further and thereafter plugs the rivet and expands it into tight contact with the workpieces 11, 12. The countersunk rivet head 13a may have a collar extension (19), Fig. 2 (not shown), which is flattened, Fig. 11, by the anvil 17 of the riveting tool, when a taper 20 of the mandrel is lodged against a rivet shoulder 18 and rivet material is displaced into a mandrel groove 24 to hold the mandrel head after the stem has broken away at a groove 25. Alternatively, the rivet head 13a may have an internal flare with a step 30, Fig. 13, against which rests a separate collar 31 which is eventually de-' formed and deforms the flare to a conical shape to hold the mandrel head, Fig. 17 (not shown). The combined thickness of the workpieces 11, 12 determines the depth of penetration of the sleeve into the rivet. There may be a thickening 26, Fig. 13, of the rivet adjacent its internal shoulder 18.
Patent GB-1063593-A (GB)
Title: Improvements in or relating to tuner units for broadcast receivers
Inventor: KNIGHT RONALD JOSEPH
IPC: H03J5/12
Filed: 1964-08-22
Abstract: 1,063,593. Push-button tuning mechanisms. E. K. COLE Ltd. May 6, 1965 [Aug. 22, 1964], No. 34435/64. Heading H3Q. In a push-button tuner a control bar 17 pivoted on the side walls of a movable carriage is engaged by a nut 31 on the end of the spring- loaded push-button 24 and its other end cooperates with a guide 15 in the side walls so that as it moves it allows the carriage to displace the threaded rod 5 of a tuning core 1. The control bar and carriage are both attached by tension springs to the side wall of the tuner so that they always remain in contact with one another. The button is held in its operative position by a disc 26 which engages a latch bar 23. When another button is pressed, the latch bar is depressed to release the disc 26, and the spring of the control bar 17 being stronger than the spring on the carriage moves the whole assembly to the right. The control bar is engaged by a nut 31 on the end of the button shaft 25, and rotation of the nut is prevented by a projection 32 engaging a slot 33 in the tuner case. Rotation of the button thus alters the preset adjustment. The inductance cores 1 may be replaced by tubes which form variable capacitors with fixed concentric tubes.
Patent GB-970293-A (GB)
Title: Method and apparatus for measuring viscosity
IPC: G01N11/10
Filed: 1961-09-26
Abstract: 970,293. Viscosity measurement. CORNING GLASS WORKS. Sept. 26, 1961 [Sept. 30, 1960], No. 34446/61. Heading G1S. In measurement of the viscosity of a fluid, the effect of uniform flow of the fluid is eliminated by measuring the amplitude of oscillation, about a shaft 16, imparted to a probe 10 by viscous drag produced by a driven probe 11 oscillating about shaft 12. Probe 10 is biased to a zero position by a torque cage 20. Since, in alternate halves of the cycle of oscillation, the fluid flow assists and opposes the restoring torque, the resultant overall travel of probe 10 will be practically independent of the fluid flow. To avoid end-effects, the lower plane surface of probe 10 may be made sufficiently large to cover the range of movement of probe 11. The amplitude of motion of probe 10 may be observed, to indicate the viscosity, by means of a scale 18 and pointer 19, or this motion may be applied via a transducing device to control the viscosity of the fluid by suitable variation of the processing variables. As an alternative to oscillating the driven probe 11, this may be rotated uniformly about shaft 12 to pass probe 10 once each revolution, the total to-and-fro movement of probe 10 again being a measure of the viscosity and independent of the fluid flow.
Patent GB-854953-A (GB)
Title: Stable, colourless spinning dope of vinylidene cyanide interpolymers and preparation thereof
IPC: C08J3/09
Filed: 1957-11-05
Abstract: A stable, substantially colourless, spinning dope solution of a vinylidene cyanide copolymer in a solvent therefor may be obtained if the copolymer has been intimately mixed with at least 2,0% of its weight of hydrogen peroxide in aqueous solution.  Specified co-polymers are those with vinyl acetate, styrene, ethyl acrylate, acrylonitrile, or vinyl chloride, and specified solvents are dimethyl formamide, nitromethane (\sB acetone), acetonitrile, g -butyrolactone and iso valero lactone.  If the treatment with H2O2, takes place before the copolymer is dissolved in its solvent, it is preferred that the co-polymer be formed into a paste with an alcohol (e.g. C1-4) before the treatment.  And in any case the copolymer should preferably be in finely divided form for the treatment.  The treated polymer solution may be extruded through a spinneret to to form fibres, or precipitated with methanol to form a white solid which may be dried and ground to powder form.  It appears from infrared and viscosity studies that the treatment causes no chemical change in the co-polymer. In the examples a vinylidene cyanide-vinyl acetate co-polymer is so treated at varying pH (2-11) adjusted with nitric acid, and at varying temperatures, viz. room temperature for 7-17 days, or 65 DEG C. for 1 hour.  Specifications 681,120, 683,655, 685,016, 688,339, 726,863, 726,866, 754,086, 756,839 and 814,624 are referred to.
Patent GB-1459792-A (GB)
Title: Electronic ramp function generator
IPC: G05B19/07
Filed: 1973-07-20
Abstract: 1459792 Digitally generated ramp voltage INSTRON Ltd 24 May 1974 [20 July 1973] 34737/73 Headings H3T and H3H An approximation to a linear ramp is generated by forming a coarse staircase wave from a pulse train having a stepwise increasing markspace ratio and filling the steps using a fine staircase-wave generator. The coarse staircase wave is generated using an adjustable counter 11, C3, C2 and a second faster staircase using a counter C1, the duration of the second being equal to one step of the first and being synchronised with the first. Each time the counts are equal a comparator 12 sets a bistable circuit 13 which is reset by the completion of the full count of the second counter. The setting therefore occurs later during each successive step of the first counter so that the bistable circuit produces pulses of successively reducing width. In the absence of this pulse a constant current is fed from a generator A1 to a capacitive circuit A2, C, R2 but during each pulse the current is diverted to a constant current circuit T. Accordingly current pulses of stepwise increasing width are applied to the capacitive circuit to produce a wave having a step-wise increasing mean value. Filling in of the steps is effected by a D/A converter controlled by counter C3 and which provides, during each step, a step-wise increasing current to the capacitive circuit. The D/A converter could be replaced by a pulse width modulator circuit similar to that providing the coarse steps.