baber/WOPTO huggingface dataset:
Patent GB-1360326-A (GB)
Title: Semiconductor components
IPC: H01L29/74
Filed: 1972-11-13
Abstract: 1360326 Semi-conductor devices SIEMENS AG 13 Nov 1972 [17 Nov 1971] 52257/72 Heading H1K A thyristor is protected against the application of excess voltage in both forward and reverse directions by the presence in the uncontacted base region 3 of a zone 10 having lower resistivity than the remainder of the region 3, the zone 10 being located wholly beneath an electrode 8 situated on the control region 2 and connected to the main electrode 5 on the emitter region 1. The portion of the semiconductor body between the protective electrode 8 and the second main electrode 11 functions as a protection diode which, because of the presence of the low resistivity zone 10, breaks down to a conductive state at a forward voltage below the thyristor "overhead firing" threshold or at a reverse voltage below that at which avalanche breakdown would occur elsewhere in the thyristor. The control electrode 6 may, like the main electrode 5, be annular, surrounding the protective electrode 8, but in the device illustrated the control electrode 6 is a small circular electrode surrounded at the thyristor surface by an electrode 13 on an auxiliary emitter region 12 which improves the firing behaviour of the thyristor. A portion 14 of the auxiliary emitter region 12 extends between the control electrode 6 and the protective electrode 8. The lower resistivity zone 10 may be provided at the centre of the base region 3 during the crucible-drawn growth of the original wafer.
Patent GB-1485597-A (GB)
Title: Hollow-shaft feed filament trimmer for cutting vegetation
IPC: A01D34/416
Filed: 1975-12-23
Abstract: 1485597 Rotating filament trimmers for vegetation C B PITTINGER 23 Dec 1975 52628/75 Heading A1F A vegetation trimmer with a rotary cutting filament 40a comprises a frame 12 mounting rotary drive means 16 having a hollow output shaft 18 with a bell mouth 18a, 18b at one end; filament from a stored supply 41 is fed through a releasable punch type lock 52 &c., extends down the hollow output shaft and passes through and beyond the bell mouth. Radial grooves 42 in the bell mouth engage the filament and cause it to rotate as the shaft 18 is rotated.
Patent GB-1278287-A (GB)
Title: Recreational devices
Inventor: HILL ANTHONY ARDERN
IPC: A63B19/02
Filed: 1969-10-28
Abstract: 1278287 Recreational device A A HILL 27 Oct 1970 [28 Oct 1969] 52644/69 Headings A6D and A6M A recreational device comprises two arcuate, e.g. semi-circular, edges 1 connected together with their bases facing each other so that a line between the ends of one edge makes an angle of more than 30‹, preferably 90‹, with the plane containing the other edge. The edges may be rods and may be connected (a) as shown to a rectangular frame 2 having strengthening rods 3 and supports 4 and straps 5 for a person to ride in the device; (b) by a single rod; or (c) by flexible members having sheets of material enabling the device to be blown by the wind. The device may be covered in fabric or constructed in solid form and may be small enough to be rolled by hand.
Patent GB-1533110-A (GB)
Title: Exterior window unit having frame sill
IPC: E06B3/46
Filed: 1975-12-23
Abstract: 1533110 Sliding window frame YOSHIDA KOGYO KK 23 Dec 1975 [26 Dec 1974] 52709/75 Heading E1J A window unit comprising a frame 19 and a pair of horizontally sliding sashes 24, 25 is fitted externally of a window with a main frame 12, the frame 19 includes a lower horizontal member with a mounting portion 28 which is fixed to the vertical face 31 of the sill 16; a horizontal member 40 is fixed to the top of the sill; the mounting member 28 has a groove 39 and the horizontal member a complementary flange 48 so that the two members interlock but are longitudinally adjustable. The outer sill portion has flanges 26, 27 which form runners for the sashes 24, 25.
Patent GB-1162844-A (GB)
Title: Rotary Piston Internal Combustion Engine
IPC: F02B53/10
Filed: 1966-11-25
Abstract: 1,162,844. Rotary-piston internal combustion engines. YANMAR DIESEL ENGINE CO. Ltd. Nov. 25, 1966 [Feb. 14, 1966], No. 52815/66. Heading F1F. A rotary-piston I.C. engine of the kind comprising a three-sided piston planetarily rotatable within a housing having a two-lobed epitrochoidal inner periphery and wherein sealing elements at the piston corners slide over the periphery and control intake and exhaust ports therein, includes in the intake port 9, Fig. 3, a control valve 11 closely adjacent to the periphery having a valve plate mounted eccentrically on a shaft 13, Fig. 2, counterbalanced by a pre-loaded torsion spring 17. The valve plate is slightly notched at 19 to allow passage of a small amount of intake mixture necessary for no-load operation of the engine. In highspeed operation of the engine the dynamic pressure of the gaseous mixture opens the valve against the spring 17. During low-speed operation, the intake port 9 is throttled and the overlapping between the exhaust and intake ports in consequence is limited and so prevents blow-back of exhaust gases into the intake port.
Patent GB-1484255-A (GB)
Title: Manufacture of elongate metal bodies from metal powder
IPC: B22F3/20
Filed: 1974-10-29
Abstract: 1484255 Extruding DAVY INTERNATIONAL Ltd 29 Oct 1974 [14 Nov 1973] 52884/73 Heading B3P An elongate metal body is made from metal powder by extruding a hot billet formed by compacted metal powder having a leading end formed of a softer metal than the remainder of the billet, and removing from the extrudate that part which is constituted by the powder of the softer metal. The softer end portion of the billet, which is produced by an isostatic compaction process, is formed from iron powder and the remainder of the billet from alloy steel powder. The billet is heated in an inert atmosphere and is extruded through a die to form a tube, rod or bar, the softer leading end of the billet resulting in a reduction of the initial pressure needed to force the billet through the die.
Patent GB-1483500-A (GB)
Title: Acylation process
IPC: C07C233/47
Filed: 1974-12-10
Abstract: 1483500 Acylated polypetides AJINOMOTO CO Inc 10 Dec 1974 [12 Dec 1973] 53456/74 Heading C3H [Also in Division C2] N-Higher aliphatic (C 6-22 ) acyl derivatives of free amino group-containing organic compounds are obtained by reacting a mixed acid anhydride of a higher fatty acid and sulphuric acid with a free amino group-containing organic compound in a liquid medium in the presence of a base at a temperature of from - 5‹ to 40‹ C. The mixed acid anhydride, which may be formed in situ, may be prepared by reacting 1 mole of a higher fatty acid with 1-2 moles of SO 3  or a complex thereof, for example with dioxane, DMF, dimethylaniline or pyridine at -20‹ to +40‹ C. in a non-aqueous solvent; the fatty acid starting material may be a natural or synthetic fatty acid or a metal soap or organic amine salt thereof, and the mixed anhydride product may be neutralized with an alkali or organic amine and preferably held at a temperature no higher than 20‹ C. prior to reaction with the free amino group-containing compound. The fatty acid employed may be saturated or unsaturated such as caprylic, capric, lauric, myristic, palmitic, stearic, oleic, linoleic and mixtures of fatty acids derived from natural fats and oils such as coconut, corn, olive, palm, tallow, hydrogenated tallow, soyabean and cottonseed oils. The free amino group-containing compound may be a peptide, an ester or amide thereof, or a protein such as casein, gelatin, yeast, soyabean protein, proteins separated from the squeezed serum of vegetable seed oil, proteins contained in drainage fluids obtained in fish processing, and the extracted protein of micro-organisms which are generally used in amino acid fermentation, glycyl - DL - alanine, L - lysyl - L - valine, L-lysyl-L-valine ethyl ester, glycyl-glycyl-glycine, polylysine, and peptides having an average of 2 to 12 amino acid groups which may be prepared from vegetable proteins, animal protiens such as fish protein, micro-organisms used in fermentation or yeast by partial hydrolysis with an acid, alkali or proteolytic enzyme. The preparation of hydrolysates of casein, soyabean protein and micro-organisms containing water and separated from a glutamic acid fermentation vessel, which are suitable as starting materials, is described. The products may be used as detergents, dispersing and emulsifying agents.
Patent GB-1372907-A (GB)
Title: Digital data transfer systems
IPC: H03M13/00
Filed: 1972-11-21
Abstract: 1372907 Error correction systems INTERNATIONAL BUSINESS MACHINES CORP 21 Nov 1972 [15 Dec 1971] 53673/72 Heading G4A A plurality of check bytes are added to a sequence of message bytes according to a matrix H which includes submatrices each of which operates on distinct portions of the message bytes, and after utilization, the message and check bytes are operated on to form a plurality of syndrome bytes which are then decoded to produce error pointers which indicate the bits in error within a single byte when all other bytes are error free. For example, a message comprising two partitions having 31 and 7 two-bit bytes respectively is encoded with three check bytes of 2, 2 and 3 bits. Syndrome bytes of 2, 2 and 3 bits are generated, each byte being separately decoded and the decoded outputs being gated together in appropriate combinations to indicate which bits are in error, there being a gating circuit for each information byte and, optionally, for each check byte. The check bytes may be encoded by exclusive OR circuits each of which operates on message bits corresponding to the 1's in one row of the appropriate submatrix. The syndrome bytes are generated in a similar manner, each exclusive OR circuit receiving the appropriate check bit as an additional input. The syndrome bytes are decoded by respective gate circuits to produce a separate output for each possible combination of syndrome bits in the byte, and for each message bit, groups of outputs of the syndrome decoders, selected according to the matrix H, are gated together to produce an error pointer for each message bit. Each error pointer is exclusive OR-ed with the corresponding message bit to effect correction.
Patent GB-1291358-A (GB)
Title: Guiding means for pumps movable in shafts
IPC: F04D29/60
Filed: 1970-11-12
Abstract: 1291358 Centrifugal pumps STENBERG FLYGT A B 12 Nov 1970 [17 Nov 1969] 53913/70 Heading F1C Guide means for vertical movement of guide blocks 12 carrying pumps 2, 3 along a shaft comprises supporting brackets 4, 5 and elongate structures 6, 8, each of which is inclined as shown or twisted or otherwise formed relative to one another in such a way that the pumps during raising or lowering are concurrently given a relative lateral movement, the paths of the pumps diverging during lowering and converging during raising. This permits the use of a small shaft opening 1. Each guide 6, 8 may comprise two tubes on a single member having a cross-section having two similar spaced portions, such as an I-beam or a T-beam. Instead of being straight as shown, the guides 6, 8 may be bent or curved, in which case they may be parallel to one another at the top while being divergently inclined or otherwise separated at the bottom. The lateral movement of each pump may be effected by turning about a vertical axis, for which purpose the guide for each pump may comprise two substantially vertical tubes connected by upper support brackets which are set at an angle to lower support brackets so that the tubes are twisted helically around the vertical axis. Alternatively, one tube may be straight while the other runs in a helix around it. The lateral movement may take place along a limited portion of the vertical movement, or in one or more steps.
Patent GB-1455008-A (GB)
Title: Roofing tile
IPC: E04D1/08
Filed: 1973-11-21
Abstract: 1455008 Roofing tile REDLAND ROOF TILES Ltd 21 Nov 1973 [25 Nov 1972] 54076/73 Headings E1B and E1R A roofing tile is characterised in that the part that covers the roof consists partly of transparent and partly of non-transparent material. The transparent part 17 may be arranged in the middle of the tile so that in use the roof battens are not seen and may be rectangular or have the corners rounded off. It may be flat, with a central ridge or domed. Both parts may be of plastics material and may be bonded, welded or moulded together. The transparent part may be in the form of a flat or rounded displaceable cover 23 having a handle 24, cross walls 25, 26, 27 and side walls, supported by the walls 21 of the non-transparent part, so that it may be closed or opened to permit air circulation, Fig. 13. The tile may have a central ridge 1, flat areas 2, 3, an overlapping ridge 4 which engages in the lateral grooving 5 of the adjacent tile in the roof, a head fillet 6 with suspension lugs 7, 8, a foot support rib 9 and a double rib 11 which rest on the tile below in the roof, projections 13, 14 for storm clamps and closure plates on the central ridge 16.
Patent GB-1067620-A (GB)
Title: Gas turbine jet propulsion engines with compression/ignition systems
Inventor: BARNES LESLIE
IPC: F02C7/264
Filed: 1965-12-24
Abstract: 1,067,620. Ignition systems. ROLLS-ROYCE Ltd. Dec. 24, 1965, No. 54891/65. Heading F4F. [Also in Division F1] An igniter for a gas turbine jet engine comprises a housing 30 having a compression chamber 19 into which is fed a fuel/air mixture from a pressurized vessel 15 through a conduit 16. A piston 20 is engaged by a rod 31 connected to the core of a solenoid 21 which when energized forces the piston along chamber 19 thereby compressing the mixture until it ignites. This ignition causes a piston valve 23 to uncover an aperture 25 from the chamber 19 against the action of a spring 24, the ignited mixture thus passing into the main combustion chamber 12 of the engine, Fig. 1 (not shown). The release of pressure from the chamber 19 permits the piston valve to return to its original position and the solenoid is de-energized, permitting a coil spring 22 to return the piston by abutting a flange 33. In the embodiment of Fig. 3 (not shown) the air/fuel mixture which passes into the compression chamber 19 is bled from the inner wall of combustion chamber 12 via a conduit 38.
Patent GB-1490360-A (GB)
Title: Gas-discharge display panel
IPC: H01J17/49
Filed: 1974-12-19
Abstract: 1490360 Gas discharge display panels PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 Dec 1974 [22 Dec 1973] 54896/74 Heading H1D In a gas discharge panel comprising a plurality of cavities 12 respectively situated at the crossing points of two sets of electrodes 5 and 7 secured to respective insulating plates 4 and 9 by a low melting-point glass enamel 3, adjacent conductors of one or both sets are separated by superficially oxidized aluminium strips 6 and 8 secured to the respective plate or plates. The strips 6 and 8 form a series of grooves of accurate rectangular cross-section in contrast to grooves produced by etching the plates 4 and 9. The electrodes 5 and 7, which may be an alloy of 5% by weight Cr, 47.5% Ni and 47.5% Fe, are nested in the grooves, either touching the sides of the grooves (Fig. 4) or spaced therefrom by gaps (Fig. 5) which are too narrow to admit flow discharge. The strips 8 (Fig. 4) are thicker than the electrodes 7 thus providing channels 12 which form cavities at the electrode crossing points when an assembly as shown in Fig. 4 is sealed to a similar assembly which is inverted and turned through a right-angle, or is sealed to an assembly as shown in the upper part of Fig. 5. The strips 6 (Fig. 5) are of the same thickness as the electrodes 5 so if two such electrode assemblies are used, the are separated by an insulating plate having apertures providing the said cavities.
Patent GB-1134640-A (GB)
Title: Self-cleaning vibratory separators
IPC: B07B1/52
Filed: 1965-12-29
Abstract: 1,134,640. Sifting apparatus. SOUTHWESTERN ENG. CO. 29 Dec., 1965 [21 Jan., 1965], No. 55128/65. Heading B2H. A self cleaning screen structure for a vibratory separator comprises an upper separating screen I disposed in parallel relation with a lower supporting screen 2 of relatively greater mesh size and a number of cleaning elements 4 of uniform cross-section which occupy the major portion of the distance between the screens, have flat ends confronting the screens and are movable essentially axially between the screens. The screens are held parallel by a surrounding circular or rectangular rim. One or more circular separating screens may be mounted in a vibratory circular separator in which gyratory vibrations are imparted to the material disposed on the separating screen or screens and to the cleaning elements 4 by means of axially spaced and circumferentially displaced eccentric weights which rotate around the vertical axis of the screen or screens. Cleaning is by impact of the elements 4 on the underside of .the separating screen or screens due to the vertical component of vibration and by relative shearing action between the upper surfaces of the elements and the underside of the screen or screens due to the horizontal component of vibration. The cleaning elements 4 may be formed of ceramic material, plastic material or metal. They may be hollow cylinders. In cross-section, they may be triangular with convex sides (12), Fig. 5 (not shown) and with a central perforation ,(5): hexagonal with a central perforation. Fig. 6 (not shown); rosette-shaped with a number of perforations (17), Figs. 7 and 8 (not shown); cross-shaped Fig. 11 {not shown); or they may have a number of spokes (24), Fig. 12 (not shown), terminating in laterally directed, inter locking flanges which permit relative axial movement between the elements but prevent relative lateral or radial displacement. In another arrangement, Fig. 9 (not shown), the cleaning elements consist of a nesting set of rings (18 to 21). In operation, the smaller rings within and between the larger rings tend to orbit while the mass of rings as a whole is not subjected to gyratory movement.
Patent GB-1433828-A (GB)
Title: Molecular inclusion compounds
IPC: C08B37/00
Filed: 1973-11-28
Abstract: 1433828 Cycloheptaamylose inclusion complexes H TROMMSDORFF 28 Nov 1973 [11 Dec 1972] 55279/73 Heading C2S [Also in Division A5] A molecular inclusion compound comprises a silver alkanolammine complex and cycloheptaamylose having 1 to 3 gram atoms silver per 10 mol cycloheptaamylose. The compound is presumed to have the formula where x is from 0À10 to 0À30, R is an alkylene radical having 2 to 5 carbon atoms and Y is the anion of a silver salt which is soluble in an alkanolamine. The alkanolamine is for example monoethanolamine, #-amino-n-propanol, #- hydroxy-isopropylamine, monobutanolamine or monopentanolamine; the silver salt is for example the nitrate, chloride, acetate, oxalate or tartrate. The compound may be prepared by (a) dissolving cycloheptaamylose in an alkanolamine, dissolving the silver salt in the resultant solution or (b) reacting salt and alkanolamine to form silver alkanolamine complex, and then adding the cycloheptaamylose; the inclusion compound is then crystallized out. Crystallization may be brought about by cooling or adding a precipitant, e.g. ethanol or propanol. The inclusion compound has pharmaceutical use and may be formulated into compositions with solid or liquid diluents or carriers.
Patent GB-1421073-A (GB)
Title: Stabilising methionine
IPC: C07C313/00
Filed: 1973-11-30
Abstract: 1421073 Stabilization of methionine DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 30 Nov 1973 [2 Dec 1972] 55655/73 Heading C2C Methionine is stabilized by treating with acid in the presence of water under conditions such that the methionine produced, on dissolution in water, produces a solution with a pH from 3 to less than 5. The stabilized methionine may be a dry substance (obtained by drying after the acid treatment), or it may be moist or a suspension or solution. The acid is preferably sulphuric acid or sodium hydrogen sulphate. The process is particularly applicable to methionine which has been produced by hydrolysis, e.g. of hydantoin, in an alkaline medium and separated by neutralizing with acid, e.g. carbon dioxide.
Patent GB-1442409-A (GB)
Title: Oil compositions
IPC: C10M157/04
Filed: 1973-12-06
Abstract: 1442409 Lubricating oils TEXACO DEVELOPMENT CORP 6 Dec 1973 [29 Dec 1972 (2)] 56469/73 Heading C5F Lubricating oils comprise a polymeric pour point depressant which is a methacrylatecontaining polymer having a number average molecular weight between 30,000 and 120,000 together with a viscosity index improver which is an ethylene-propylene copolymer having an amorphous structure, a number average molecular weight between 10,000 and 100,000, a minimum propylene content of 40 mole per cent and an Mw/Mn of less than 5. The pour point depressant can be prepared by polymerizing one or more C 1 -C 22  n-alkyl methacrylates, optionally together with a dialkylamino alkylmethacrylate or a N(alkanone) acrylamide. 0À05-10 wt. per cent of the pour point depressant and 0À5-5 wt. per cent of the viscosity index improver can be added to oils such as single distillate fractions, blends of distillates, and residual oils. The pour point depressant and viscosity index improver can be prepared as a concentrate in a lubricating oil of viscosity 75-300 SUS at 100‹ F.
Patent GB-1280859-A (GB)
Title: Improvements in or relating to method of and apparatus for the continuous regeneration of ion exchange resins in fluid bed
IPC: B01J49/00
Filed: 1969-11-19
Abstract: 1280859 Ion-exchange regeneration DEGREMONT SOC GENERALE D'EPURATION ET D'ASSAINISSEMENT 19 Nov 1969 [20 Nov 1968] 56635/69 Heading B1J In a countercurrent regeneration and washing of an ion-exchanger in a single stage the flow of liquid is controlled to prevent resin passing into the washing zone before regeneration is complete.
Patent GB-1483898-A (GB)
Title: Mobile saw bench for farm use and the like
IPC: B27B5/10
Filed: 1973-12-10
Abstract: 1483898 Mobile sawbench A W KIDD 29 Nov 1974 [10 Dec 1973] 57050/73 Heading B5L A mobile sawbench B is provided at a front side with means for attachment to the threepoint linkage of a tractor A, and at the rear side with means for attachment to a trailer C the bench being lowered to the ground for use and raised for transport. The saw 18 is driven from the power take-off 20 of the tractor.
Patent GB-1180260-A (GB)
Title: Vibration Analyzers
Inventor: KAMENSCHIKOV JURY MIKHAILOVICH
Filed: 1967-12-18
Abstract: 1,180,260. Measuring vibrations electrically. MOTOROSTROINTELNY ZAVOD IM. YA. M. SVERDLOVA. Dec. 18, 1967, No. 57334/67. Heading G1N. A vibration transducer 1, Fig. 2, is connected to an amplifier 3 through a regeneratively connected valve 7 having a narrow band filter 8, 9, 10, 11 in its feedback circuit. Ganged capacitors 8 are calibrated in frequency and are adjusted to select from the transducer output signal a frequency band whose amplitude is then indicated by a display circuit 4. This circuit 4 includes a rectifier 21, filtering resistors and capacitor 22, 23, 24, and a meter 19. Zero settigg is by potentiometer 26. A calibrating circuit 5, energized by the heater winding of the power supply 6 transformer, includes a non-linear element 27 such as a valve.
Patent GB-1255089-A (GB)
Title: Apparatus for measuring the length of wires, cords, cables or ropes, which are being unwound from or wound on to spools or drums
Inventor: KRIEGER JORG
IPC: G01B21/06
Filed: 1969-11-24
Abstract: 1,255,089. Measuring length. SCHWERMASCHINENBAU-KOMBINAT ERNST THAL. MANN VEB. 24 Nov., 1969, No. 57379/69. Heading G4H. In apparatus for measuring the length of e.g. a wire fed round a drum 1, Fig. 2, pulses derived inductively, capacitively or optically for each revolution of the drum are fed via a trigger circuit 13 (Fig. 1) to a counter 5, the counter also receiving with for example a known error of 2% undermeasurement an additional counting pulse for every 50 pulses. This additional pulse is generated by also counting the pulses from trigger circuit 13 in counter 6, the outputs from which are connected via diode matrices 7 to switches 8 preset e.g. to recognize a count of 50 so that after that count a pulse is fed via a delay 10 to the counter, this pulse also resetting the counter.