baber/WOPTO huggingface dataset:
Patent GB-1148413-A (GB)
Title: Fibre plants decorticating and defibrating machine
IPC: D01B1/22
Filed: 1967-07-31
Abstract: 1,148,413. Crushing cylinders for fibre-containing plants. SOC. COLLETTIVA ADRIANO GARDELLA & F.LLO. 31 July, 1967 [1 Aug., 1966], No. 35119/67. Heading DIN. In a decorticating and defibrating apparatus comprising two contra-rotating, axially corrugated, crushing cylinders 9, the peripheral speed of rotation of the cylinders is substantially greater than the feed speed of the feed means, e.g. two fluted, co-operating cylinders 5, 105. The feeding cylinders and crushing cylinders are geared together and also to the drive of a conveyor belt 11. The grooves 209 of the corrugations are wider than the projections. The crushing cylinders are supported apart such that a projection of one cylinder does not reach the bottom of the corresponding groove of the other cylinder nor strike the sides of that groove during rotation of the cylinders. The upper feed cylinder 105 is downwardly biased by spring 8 towards the lower feed cylinder the material to be crushed being fed to the cylinders through a hopper 4.
Patent GB-1068636-A (GB)
Title: Combination rotary broom and impeller
IPC: E01H8/06
Filed: 1964-08-27
Abstract: 1,068,636. Snow ploughs; street sweeping. E. H. FISHER. Aug. 27, 1964 [Sept. 6, 1963; April 29, 1964], No. 35139/64. Heading E1G. A machine for clearing snow or sweeping refuse has a transverse impeller 37 with helically arranged flexible blades 41 for moving the snow, with the assistance of an axial air flow from a fan 48 and/or 49, to a flat bladed impeller 58 which delivers to the entry of a combined axial and radial flow fan 60 discharging through a duct 69. The impellers are driven from a prime-mover 27 through a countershaft 30 and chain gearing and the impeller shafts are carried on a frame structure 26 adopted for connection at 24, 25 to the frontloader arms of a tractor. The impeller 37, 38 is partially enclosed by a shround 56 having an adjustable forward portion 57. To increase the exit velocity of the snow from the duct 69, the inner wall of the casing of fan 60 projetcs into the path of flexible fan blades. In other embodiments the fan is mounted coaxially with the impeller 37 either at the centre or at one end and may comprise the flat blade impeller 58 discharging direct to the duct 69 or an axial-radial fan 60. Additional sweeping means comprising flexible strips 124 (Fig. 15) hinged at 126 and oscillated against a spring 133 by an arm 129 contacting an arm 130 on the hinge 126; the arm 129 being driven with the impeller 37, may be provided to ensure sweeping over the whole area. Alternatively the sweeping means may be a two bladed rotor driven from the main impeller shaft. Oil may be injected into the fan casing and/or discharge duct to prevent the discharging material sticking within the fan.
Patent GB-630362-A (GB)
Title: Improved process for the production of rubber-like copolymers
IPC: C08K3/08
Filed: 1945-05-29
Abstract: Rubbery copolymers of a major proportion of a mono-olefinic compound free from halogen substituents, with a minor proportion, e.g. below 20 per cent, of an organic compound having at least one olefinic group and at least one halogen substituent in the molecule, are cured by admixture with an alkali metal, magnesium or zinc, and heated. Specified copolymers are derived by polymerization of isobutylene and p-bromostyrene at low temperatures suing a Friedel-Crafts catalyst, and methyl acrylate and p-brom-styrene in aqueous emulsion in the presence of ammonium persulphate.  Preferably the copolymer is hot-milled before incorporation of the curing agent.  The preferred metal is sodium in pellet form.  The copolymers may be derived from mixtures of mono-olefines and diolefines and whilst the use of monohalogenated compounds is preferred, polyhalogenated compounds, e.g. dichlorbutadiene, may also be used.
Patent GB-321573-A (GB)
Title: Improvements in and relating to calendars
IPC: B42D5/04
Filed: 1928-11-30
Abstract: 321,573. Lockett, W. J., (trading as Cash & Clare). Nov. 30, 1928. Calendars.-A particular date indicator for a monthly calendar comprises an endless elastic band e passing through vertical slots c, d in the calendar backing b and provided with a gelatine or similar indicator f mounted in a suitable frame g on which advertisements and other matter may be stamped.
Patent GB-507854-A (GB)
Title: Improvements in and relating to the production of etched intaglio printing elements
IPC: G03F5/20
Filed: 1937-12-21
Abstract: 507,854. Photomechanical printing- surfaces; etching. PHOTO-CYLINDER CORPORATION. Dec. 21, 1937, No. 35389. Convention date, Jan. 22. [Class 98 (ii)] [Also in Group XVI] Etched intaglio-printing plates are prepared by forming on the surface to be etched a resist consisting of two series of intersecting lines which are curved or bellied inwardly between their points of inter-section to compensate for the less rapid action of the etching fluid in the corners, the resulting etched cells being square. The resist may be produced by copying an original using a crossline screen and a stop in the form of a cross, the arms of which F<1>, Fig. 4, taper towards the intersection F<2>. A positive from the resulting negative is then used to print on the surface of a metal plate coated with, for example, sensitized fish glue or photo-engravers' enamel. Alternatively, a screen may be produced as in Fig. 7 by exposure of a sensitive layer using a cross-line screen and a stop as in Fig. 4. This screen may then be printed on a negative of the subject or directly onto the surface to be etched. It may also be printed on carbon tissue and transferred thereto.
Patent GB-1056763-A (GB)
Title: Coherent light source
IPC: H01S3/0933
Filed: 1963-09-09
Abstract: 1,056,763. Lasers. SPERRY RAND CORPORATION. Sept. 9, 1963 [Sept. 11, 1962]. No. 35428/63. Headings H1C and H1K. A laser comprises a crystal of calcium tungstate doped with neodymium which is optically pumped by one or more forwardly-biased PN junction diodes, the emitted optical radiation of the diodes having a spectrum closely matched to the excitation spectrum of the crystal. As shown in Fig. 5, the neodymium calcium tungstate crystal 1 is cemented to the end of a rectangular light tube 3, the light tube passing through the insulating stopper 14 of a nitrogen dewar vessel 2 which maintains the operating temperature at about 77‹ K. A resonant light cavity is defined in the crystal by silvered reflective coatings on ends 4 and 5, the stimulated coherent emission passing through the reflective wasting at end 4 into the light tube. The crystal is pumped by optical energy from a plurality of zinc-diffused gallium arsenide or indium gallium arsenide diodes 6, the diodes as shown being formed on four blocks 7 of semi-conductor material fitted to the remaining surfaces of the crystal. Each block may consist of 24 diodes and is formed in known manner by zinc-doping a sheet of semi-conductive material and etching the sheet to form a plurality of individual mesa diode junctions. A separate electrical connection 8 is made to each mesa and a common connection 9 is made to the base of the sheet, the various conductors being brought out of the dewar vessel through a cable 10. Resistors 12 are provided at the outer cable end for matching the diode bias currents in the range 1 to 2 amperes. The blocks of diodes are sealed on the crystal by " Kovar " (Trade Mark) rings 11. In operation, the biasing current of the lightemitting diodes 7 is adjusted to about 2 amperes for each diode, to give a radiation spectra which closely approximates the direct lasing excitation wavelength of 8700Š of the neodymium doped crystal. The emitted radiation from the diodes is directed with essentially no loss into the crystal to excite the active neodymium ions directly into a metastable energy level 4F 3/2 , Fig. 1 The excited ions then decay to level 4I 11/2 , producing 1À06 micron fluorescence which builds up along the longitudinal axis of the crystal. It is stated that the addition of indium to gallium arsenide enables the optical radiation spectrum of the diodes to be more closely matched to the excitation spectrum of the crystal, and that matching can also be effected by temperature control. The calcium tungstate host material may be replaced by strontium molybdenate, lanathum fluoride, calcium fluoride or glass.
Patent GB-921547-A (GB)
Title: Derivatives of 2-hydroxy-5,9-dimethyl-6,7-benzomorphane, their salts, and process for their production
IPC: A61K31/395
Filed: 1960-10-17
Abstract: The invention comprises compounds of general formula <FORM:0921547/IV(a)/1> in which R represents a hydrogen atom or an acyl group containing 1 to 5 carbon atoms and R1 represents a saturated or unsaturated aliphatic hydrocarbon group with 3 carbon atoms, their quaternary ammonium salts having two such hydrocarbon groups attached to the nitrogen atoms and their acid addition salts, said salts having non-toxic anions, said compounds being in the "normal" series; also the processes of reacting 21-hydroxy-5,9-dimethyl-6, 7-benzomorphane with an appropriate N-alkylating, -alkenylating or -alkynylating agent, and, if desired, quaternising the resulting compounds or their 21-acyl derivatives with such an agent prior or subsequent to the process of acylation. Pharmaceutical compositions comprise the above compounds and a pharmaceutical carrier, and include forms for parenteral (solutions), oral (tablets, dragees, capsules, syrups, linctuses) and rectal (suppositories) administration.  The compounds are analgesic morphine-antagonists.
Patent GB-327413-A (GB)
Title: Improvements in gramophone design and construction
IPC: G11B33/02
Filed: 1928-12-03
Abstract: 327,413. Featherstone, R. W. Dec. 3, 1928. Cases.-The sound-reproducing mechanism of a cabinet gramophone is contained within a case 6 which is removably inserted in the cabinet 1 and is provided with a hinged lid 7 adapted to be releasably connected with the hinged lid 3 of the cabinet so as to open and close with such lid. The case 6 is supported in the cabinet 1 by means of vertical and horizontal supports 13, 14, and in this position a flap 9 covering the mouth of a horn 10 in the case 6 is adapted to hang vertically so that the horn mouth coincides with an opening 16 in the front of the cabinet 1. The releasable connection between the two lids 3, 7 consists of a clasp 15 which is slidable in a slot 22 in a base-plate 24, Fig. 3, on the lid 3, and is caused by a spring 29 to engage the upper edge of the lid 7.
Patent GB-965000-A (GB)
Title: Improvements relating to refractory bricks
IPC: C04B35/047
Filed: 1961-10-02
Abstract: Refractory bricks are made by moistening with water a non-acid refractory mix embodying magnesia, moulding, and treating, while still moist, for 6-12 hours at 50 DEG  C. with a gas which has been compressed so that its partial pressure of carbon dioxide is at least 1/2 atmosphere and its relative humility exceeds 50%. The gases preferably contain 15 to 40% of carbon dioxide and waste gases from certain specified processes can be used.  Dilute sulphuric acid can form a supplementary bond, and the mixes specified are magnesia, chromite or their mixtures.  When chromite is used alone, magnesia is present as an impurity.  At least 5% magnesia should be present.
Patent GB-915692-A (GB)
Title: Improvements in or relating to hydraulic presses
IPC: B30B1/32
Filed: 1959-10-20
Abstract: 915,692. Metal-working presses. FIELDING & PLATT Ltd., ROWLES, D. V., and MADELEY, R. Jan. 4, 1961 [Oct. 20, 1959], No. 35553/59. Class 83 (4). [Also in Groups XXIV and XXIX] An hydraulic press, which may be used for the cold deformation of steel, comprises a main ram 7 movable in a frame 1 which is of steel or other metal having similar qualities and is in the form of a tube, and a work-table 3 integral with the tube. The work-table and tube may be welded together and the tube acts as a cylinder for the ram which is movable downwardly by hydraulic pressure applied to its upper surface and is retractable by a doubleacting piston-and-cylinder device 16. Holes 6 in the tube provide access to the upper surface of the worktable and an ejector device 4 is disposed beneath the work-table. In another embodiment, the tube is a solid end forging, the solid end forming the work-table. Wear between the ram and wall of the tube may be taken up by adjusting the thickness of shims 32 beneath the heads of two pairs of diametricallyopposed tapered keys 30 disposed in slots 29 in the ram. Specification 749,571 is referred to.
Patent GB-1456133-A (GB)
Title: Ball bearings
IPC: F16C29/00
Filed: 1974-01-07
Abstract: 1456133 Bearings J B THOMSON 7 Jan 1974 [19 Jan 1973] 35580/74 Divided out of 1456131 Heading F2A A shaft for the linear motion ball bearing assembly disclosed in Specification 1,456,131 is provided with at least one axially extending hardened metal ball conforming groove. The groove may be formed in the surface of the shaft, e.g. by grinding, or it may be formed in an elongate strip member attached to the shaft. The strip member may be pressed into a slot in the shaft, or it may be slipped into a dovetailsectioned slot in the shaft. Alternatively, it may be bonded, brazed, or silver-soldered to the shaft. The strip member may be hardened by heat treatment before, during or after attachment to the shaft. Alternatively, the groove may be work hardened by cold forming.
Patent GB-324175-A (GB)
Title: Improvements in and relating to thermionic valves
IPC: H01J21/02
Filed: 1928-12-04
Abstract: 324,175. Freedman, P. Dec. 4. 1928, Vacuum tubes.- In high-vacuum thermionic valves of the triode type the capacity between the anode and the grid is substantially eliminated by the cathode or its supports or by plates arranged in series with it, said members being interposed between the grid and the anode in such a way as to surround the inner of these electrodes. In the construction shown in Fig. 1 the cathode 6 is arranged in a spiral around the anode 4, and the grid 7 surrounds the cathode. To resist deformation of the cathode by heat it may be of tungsten, tantalum, or molybdenum wire coated with platinum, nickel, iron, or cobalt having a further coating of alkalineearth oxides. In the construction shown in Fig. 2 the cathode consists of two diametrically opposite straight filaments 11 and its leads are expanded into troughs 9 that surround the anode 4 and eliminate the capacity between it and the grid. The filaments are stretched by springs 12. In the construction shown in Fig. 4 an elliptical anode 13 is surrounded by a screen 14 that supports the cathode filaments 16, slots 15 in the screen being arranged in the discharge path. These parts are surrounded by a control electrode 17 having semicircular depressions 18 concentric with the filaments. Additional accelerating grids 19 may be provided. The anode may be the. outer electrode and the grid the central one.
Patent GB-1380456-A (GB)
Title: Temperature compensating digital systems for electromechanical resonators
IPC: H03B5/30
Filed: 1972-07-31
Abstract: 1380456 Temperature compensated oscillators and frequency dividers BULOVA WATCH CO Inc 31 July 1972 [2 Aug 1971] 35752/72 Heading H3F The frequency of an electromechanical resonator is compensated for temperature variations by generating an analogue temperature signal, connecting it to a digital signal and applying it to a function generator to produce a signal which is an inverse match for the frequency-temperature characteristic of the resonator and using this signal to control the frequency of the resnator or to control a frequecny divider connected to the resonator to obtain a constant frequency output independent of temperature variations. In Fig. 6, the ambient temperature is sensed by a thermistor or temperature-sensitive capacitor or diode 11. The function generator 13 is a read-only memory whose output is converted to an analogue voltage for controlling the capacitance of a diode in the frequency-determining circuit of a piezo crystal oscillator 16. Alternatively, the output of the function generator may control gates in a bank of capacitors or resistors in the frequency-determining circuit of the resonator, which may be a tuning fork, balance wheel, vibrating reed or piezo crystal. The converters and function generator may operate on a low duty cycle (1 ms per sec.) to conserve power.
Patent GB-323884-A (GB)
Title: Improvements in or relating to presses for drawing sheet metal
IPC: B21D24/12
Filed: 1928-12-04
Abstract: 323,884. White, A. E., (Hamilton Press & Machinery Co.). Dec. 4, 1928. Cupping.-The blank-holder 25 of a press for drawing sheet metal is actuated through linkage 43, 42 and rock shafts 40, 41 by a slide 50, which is inclined from the front to the rear of the press, and which is reciprocated by linkage 56, 57, 60, 61, 65, 81, including a pin 70 by which motion is transmitted to an arm 78 on the rear rock shaft 41. The pin 70 is freely journaled in the links 65, 81, but has an enlarged mid-length provided with parallel flats by which a limited sliding movement within a push 76 keyed in the arm 78 is permitted. This arrangement is stated to prevent errors caused by wear in the slideactuating mechanism from being transmitted to the blank-holder. The link 56 is driven by a crank 55 on the main shaft 29 driving the press-head 27.
Patent GB-325613-A (GB)
Title: Improvements in the process of and apparatus for manufacturing pottery or ceramic articles
Inventor: DENGLER JOSEF
IPC: B28B5/08
Filed: 1928-12-04
Abstract: 325,613. Dengler, J. Dec. 4, 1928. Pottery, throwing and turning.-In the automatic manufacture of pottery a flat sheet of plastic material is formed by mechanism working automatically in timed relation to an intermittently-rotating table which delivers it to and presses it against the surface of a template on the table, the article thus formed being subsequently trimmed and finished, both pressing and finishing being carried out automatically and simultaneously at different points on the table so that one article is finished and delivered at each movement of the table. Clay is delivered from the conveyer 57, Fig. 1, to the hopper 58 and thence is delivered by an extrusion machine 48, Figs. 1 and 6, to a rotating spreading tool 50 which flattens it. The bat of clay is dropped on to one of the intermittently-rotated moulds 4 when the tool 50 is swung aside by gearing actuating the boss 54. A cam-actuated lever 55 maintains pressure between the tool and the material. As the mould-carrying table moves round, the bat of clay is brought underneath the wiping device shown in Figs. 2 and 4 and is pressed against the surface of the mould and smoothed by the pressure-moistened and spring-armed sponge 12 which moves between the dotted and full-line position for this purpose. A wire-cutter 29 trims the lower edge of the bat during this time. At the moulding stage, two curved knives 36, 37, Fig. 5, co-operate to form the bead of the supporting rim and a further wire 39 trims the lower edge of the article: a spraying nozzle 42 moistening the material during the process. In a modified arrangement, the batpressing mechanism is arranged vertically and the lumps of clay are delivered to it by hand.
Patent GB-790988-A (GB)
Title: Manufacture of granulated ammonium phosphate fertilizers
IPC: C05B7/00
Filed: 1956-11-23
Abstract: A process for the production of ammonium phosphate fertilizers comprises mixing aqueous phosphoric acid with particles of vermiculite and thereafter passing gasous ammonia through the resulting mass while agitating the same.  The ammonia is passed through the mixture until absorption of ammonia virtually ceases and the granules, which previously appear damp, assume a dry appearance. The phosphoric acid used may be previously partially neutralized with ammonia.  The examples disclose the formation of (1) a substantially mono-ammonium phosphate fertilizer and (2) a substantially diammonium phosphate fertilizer.
Patent GB-1068438-A (GB)
Title: Preset communication tuning unit
IPC: H03J5/10
Filed: 1964-09-02
Abstract: 1,068,438. Tuning mechanisms. R. KOPT. Sept. 2, 1964 [Sept. 7, 1963], No. 35919/64. Heading H3Q. In a preset tuning arrangement of the type in which a rotatable disc 13, Figs. 1, 2, 3 carries a number of adjuster screws 11, a selected one of which in operation engages an actuator lever 7 controlling the setting of a continuously variable tuning device, the selecting means provided for rotating the disc has a rest position and an operating position, movement from the latter to the former causing the actuator lever 7 to be moved out of engagement with the adjuster screw. Actuator lever 7 is pivoted at 8 and includes a toothed segment 9 which engages gear 6 on tuning shaft 6; it is normally biased by means of a spring (not shown) so that pin 10 engages the selected adjuster screw 11. The selecting means comprises a slidable shaft 26 carrying knob 27 and also a four-armed member 35 which is free to slide on the shaft but constrained to rotate therewith; a spring 36 normally urges member 35 against collar 40 whereby the shaft 26 remains in the rest position. A pin 37 then engages between the arms of member 35 and prevents rotation. Upon depression of knob 27 member 35 becomes disengaged from pin 37 and can then be rotated; one of the pins 41 engages the adjacent one of the slots 22 in the periphery of disc 13 whereby the latter is also caused to rotate to bring a further one of the adjuster screws 11 into operative position. Location is provided by a roller 23 carried by spring arm 24. The preliminary act of depressing knob 27 causes a link mechanism comprising two members 29, 32 to come into operation (see Fig. 3); member 32 engages pin 10 on actuator lever 7 whereby the latter is urged out of contact with adjuster screw 11. The adjuster screws 11 are provided with heads formed with cross slots 14 and the selected screw may be rotated so as to correct the tuning by means of a spring-loaded member 15, the end of which is formed with a corresponding cross-shaped projection. The disc 13 may also carry a further set of adjuster screws 51, the operative one of which engages a link mechanism S2-55, whereby waveband switching is also effected, this screw being adjustable by means of a screwdriver inserted through aperture 56 (Fig. 2) in the frame. The arrangement may be adapted for remote control. Motor 49, Fig. 4, drives a hollow sleeve 45 through gears 50, 47; the sleeve is only capable of rotation and is provided with an internal helical groove 44 in which is located a pin 43 attached to an extension 39 of shaft 26. Upon operation of the motor, the shaft 26 is first caused to move inwardly and then is rotated when pin 43 reaches the end of its travel.