baber/WOPTO huggingface dataset:
Patent GB-1133530-A (GB)
Title: Screw press
IPC: B30B1/22
Filed: 1966-11-08
Abstract: 1,133,530. Metal working presses. CHEPOS, ZAVODY CHEMICKEHO A POTRAVINARSKEHO STROJIRENSTVI BRNO OBOROVY PODNIK. 8 Nov., 1966 [16 Nov., 1965], No. 49879/66. Heading B3H. [Also in Division B5] A screw press for cold-forming metallic workpieces comprises a sleeve 2 mounted for rotation and limited axial movement in the press frame 17, a shaft 3 connected to the press ram 4 and threadedly engaging the sleeve 2, coupling means 7, 8, 9 between a drive member 1 and the sleeve 2, a flywheel 5 secured against rotation relative to the shaft 3 but axially movable thereon towards and away from a position of weight-transmitting frictional engagement with the drive member 1, pneumatic means for lifting the flywheel 5 including means for admitting gas under pressure to a normally sealed chamber between the face of the drive member 1 and the flywheel 5, and a motor for rotating the drive member. Operation.-The flywheel 5 and the sleeve 2 are first uncoupled from the drive member 1 and braked by means of air-operated annular pistons 11 and 14. The piston 11 acts through discs 7 and 18, the disc 7 being movable axially but rotationally fixed relative to the sleeve 2. Braking of the sleeve 2 is effected when a flange 2a thereon is pressed against the press frame 17. The motor driving the member 1 is then started. To carry out a pressing action, air is discharged from below piston 14 to unbrake the flywheel 5 and allow it to be driven by frictional engagement with drive member 1. When the flywheel has reached the desired speed it is lifted and continues its rotation on a cushion of compressed air escaping from the space under a channel-shaped friction lining 12. The kinetic energy of the flywheel is transmitted through the threaded shaft 3 and ram 4 to the material to be formed. To raise the ram the shaft 3 is braked through the flywheel 5 and piston 14 and drive transmitted from member 1 to the sleeve 2 through the disc 7, the piston 11 being in its lowered position.
Patent GB-1383614-A (GB)
Title: Power converter for an integrating pulse ionization chamber radiation dosimeter
IPC: G01T7/12
Filed: 1972-10-30
Abstract: 1383614 Radiation dosimeters UNITED STATES ATOMIC ENERGY COMMISSION 30 Oct 1972 [9 Nov 1971] 49917/72 Heading G1A [Also in Divisions H2 and H3] A radiation dosimeter comprises an ionization chamber having a gas discharge diode connected in series with its charge collecting electrode, and an astable multi-vibrator producing switching pulses for a ringing choke converter producing the D.C. bias for the ionization chamber, strobe pulses being superimposed on the bias to ensure periodic discharge of the chamber. As shown, short pulses having a low repetition frequency are generated by astable multi-vibrator 5 and applied to a high voltage converter circuit 87 via a driver stage 85. In the converter the negative-going pulses switch on transistor 21 drawing current through choke 23 so that when transistor 22 switches off at the end of the pulse the choke rings producing a large negative going pulse which forward biases rectifier 25 and Zener diode 31 to charge capacitors 27 and 33. When the choke voltage returns to zero rectifier 25, which has a reverse breakdown voltage of 200V, and Zener diode 31, which has a breakdown voltage of 25V, both breakdown to allow the voltage on capacitors 27 and 33 to recover to -200V and -225V respectively. The voltages on the capacitors then equalise to -212.5V through resistor 29 with a time constant of 1ms. The net result, after further smoothing by resistor 35 and capacitor 37 to remove the switching transients, is a steady supply of -212.5V on which strobe pulses having an amplitude of -12.5V are superimposed. This forms the cathode supply for an ionization chamber 41 having a cathode 43 and a concentric anode 45 in the form of a tube within which is mounted a gas discharge diode 49 having one electrode connected to the chamber anode 45 and the other connected to a latching transistor relay circuit. Radiation incident on the chamber 41 results in charge collecting on the anode causing its potential to drop until the diode 49 discharges triggering the relay circuit which latches and applies a negative potential to the output line 71. This potential switches on a loudspeaker driver circuit 91 and simultaneously increases the frequency of the multi-vibrator 5 to produce an audio alarm tone which is reproduced by the loudspeaker. The relay circuit is reset by manual operation of ganged test/reset switches 67, 75. The strobe pulses superimposed on the chamber bias voltage cause the gas discharge tube 49 to fire to remove the accummulated charge on the chamber anode when the anode voltage of the chamber reaches a given level. This ensures that the chamber is discharged under conditions of low radiation intensity in which an equilibrium is attained between the generation of charge and the increased leakage current of the gas diode just below its firing voltage.
Patent GB-1061449-A (GB)
Title: Mixtures containing dithionites
Inventor: JANSON ALFONS
IPC: C01B17/66
Filed: 1963-12-18
Abstract: Urea is present as a stabilizer in a mixture containing a major proportion of a dithionite. The amount of urea is, say, 2 to 20%.ALSO:A mixture contains a major proportion of a dithionite and urea as a stabilizer, in amount, say, 2 to 20%. Na2S2O4 is stabilized in the examples and K2S2O4 is also specified.
Patent GB-1056947-A (GB)
Title: A toy
IPC: A63B59/02
Filed: 1965-11-24
Abstract: 1,056,947. Cup and ball toys. MASCO CORPORATION. Nov. 24, 1965 [Nov. 25, 1964], No. 50023/65. Heading A6S. A ball holder and throwing stick 10 includes a suction cup 14 whose suction is released by operation of a trigger lever 34 which opens a passage 25 in the cup 14.
Patent GB-1469447-A (GB)
Title: Sliding clutch fishing reels
IPC: F16D7/02
Filed: 1974-11-19
Abstract: 1469447 Fishing reels ABU AB 19 Nov 1974 [20 Nov 1973] 50102/74 Heading A1A A fishing reel has its spool rotatable about a fixed shaft as described in Specification 1345553 but the claims relate to a spring means (20) (Fig. 1-not shown) consisting of a pair of washers, one 25 arched and springy, the other 26 flat, through which movement of an adjusting lever (19) is transmitted to an adjustable brake disk 5. The arched washer 25 with its circumferential edge abutting brake disk 5 has a greater diameter than washer 26 and its inner circumferential edge abuts shoulder 27 on gear wheel 6 which is movably mounted on shaft 1, while washer 26 is situated between brake disk 5 and the arched washer 25. Washer 26 divides the spring action 'of washer 25 into two concentric parts. When the brake is applied by means of lever (19) a smooth spring action is obtained along a distance "a" within which washer 25 is resiliently deformed over its full radial extent. When the washer 26 abuts brake disk 5 the reel is in its "strike drag" position used when playing a fish. When the angler wishes to draw in line and gaff the fish he applies more pressure on the brake lever (19) causing the region 25b of washer 25 to be deformed a distance "b" when the reel is in its "full drag" position.
Patent GB-984413-A (GB)
Title: Extreme pressure lubricants
Inventor: FARMER HOMER HAYNES
Filed: 1963-12-20
Abstract: An extreme pressure lubricant comprises as a base stock a mineral or synthetic lubricating oil or grease and as additive 2.5-5% by weight of the base stock of antimonous diamyl- or dihexyl-dithiocarbamate. Exemplified base stocks are S.A.E. 90 lubricating oil and a lithium 12-hydroxystearate grease.  Examples compare the use of the above additives with dithiocarbamates of different metals and/or having different alkyl groups.
Patent GB-1511042-A (GB)
Title: If amplifier
IPC: H03D3/20
Filed: 1975-04-02
Abstract: 1511042 IF amplifier GENERAL ELECTRIC CO 2 April 1975 [4 April 1974] 50660/77 Divided out of 1511041 Heading H3T An IF amplifier including a plurality of consecutive stages of which the final stage includes an emitter coupled transistor pair Q 11 , Q 12  receiving inputs in push pull and associated with a DC stabilized current source arrangement 123. The collector of Q 12  is connected to AM, FM tuned filters 19, 18 operating at their respective resonant frequencies and providing minimal loading on the other filter. The FM filter 18 may be critically or slightly over-coupled. References are made to prior Specifications 1,503,171, 1,503,172 and 1,503,173.
Patent GB-1518828-A (GB)
Title: Electrophotographic method for producing multiple copies from the same electrostatic image
IPC: G03G15/00
Filed: 1975-12-11
Abstract: 1518828 Controlling electrophotographic copiers ITEK CORP 11 Dec 1975 [26 Dec 1974] 50769/75 Heading B6G As a succession of developed images are made from one electrostatic image and transferred to copy material the development electrode bias is progressively reduced, in step with the decaying electrostatic image and background potential. Preferably the latent image is formed on a photoconductive drum and developed with toner to produce a succession of developed images, which are transferred in turn to an intermediate transfer web. While on the transfer web the toner images are heated to at least their melting point, immediately before being printed on to copy material.
Patent GB-1519146-A (GB)
Title: Electrically illuminated costume or personal jewellery
IPC: A44C15/00
Filed: 1975-11-17
Abstract: 1519146 Electrically-illuminated jewellery M S R SMITH 17 Nov 1975 [26 Nov 1974] 51109/74 Heading A3H The lamps or light-emitting diodes of electrically-illuminated jewellery are supplied with high current pulses of short duration to illuminate them alternating with prolonged low current periods insufficient for illumination, by an integrated solid state circuit directly or via a transistor relay. Current may flow for 1/10<SP>th</SP> sec and be at a very low value for 5 sec, to reduce current consumption. The cycle is repeated continuously though not necessarily accurately. 1519152 Stabilising sloping ground by drainage ENPACK (HONG KONG) Ltd 19 June 1975 26179/75 Heading A1B [Also in Division El]  A drain formed in sloping land comprises a longitudinally slotted sleeve 6 in a horizontal or upwardly inclined hole, a seal 9 between the sleeve and mouth of the hole and an impermeable invert between the sleeve and the ground 1 around the hole and below the level of slots 7 to either side of the longitudinal axis of the sleeve. A hose 11 delivers fluid grout, which sets to give the impermeable invert, to each slot 7 in the sleeve bottom in turn working inwardly along the hole. Excess grout in the sleeve is removed by a wire brush and flushing with water. Blocks 12 position the sleeve in the hole and a bleeding hole 10 in seal 9 is sealed off during grouting. Slots 7 in the upper half of sleeve 6 are protected by a synthetic filter 8.
Patent GB-1294707-A (GB)
Title: Apparatus and process for making insulating sheets
Inventor: SAVELLI AULO
IPC: E04C2/32
Filed: 1970-10-28
Abstract: 1294707 Insulating sheets A SAVELLI 28 Oct 1970 [29 Oct 1969] 51253/70 Heading B5N A process for producing insulating sheets 15 having protuberances 12 formed by closed airfilled cells comprises passing a tape 4, e.g. polyethylene, polyvinylchloride, over a heating roller 6 to raise its temperature above its softening point, said heating roller 6 being made of a non- adhesive material or provided with a non- adhesive coating, and transferring the softened tape 4 to a rotating cylinder 1 which has a plurality of recesses on its outer surface connected by channels to a vacuum pump, passing a second tape 8, e.g. aluminium or paper, over a heating roller 10 and pressing it in contact with the tape 4 on the rotating cylinder 1 and removing and cooling the insulated sheet material. In the event that the second tape 8 is heat-softenable, the second roller is also provided with a non-adhesive coating which may be polytetrafluorethylene, potassium stearate or a silicone. The pressing rollers 13 may also be provided with a non-adhesive coating.
Patent GB-1377096-A (GB)
Title: Polyureaurethane shock absorbing compositions
IPC: C08G18/40
Filed: 1971-11-04
Abstract: 1377096 Rail vehicle draft gear GOODYEAR TIRE & RUBBER CO 4 Nov 1971 [27 Nov 1970] 51325/71 Heading B7T [Also in Divisions C3 and F2] Rail vehicle draft gear comprises a number of shock absorbing devices contained in a supporting cylinder and prepared by moulding between metal force-receiving plates 2, 3 a polyureaurethane composition (see Division C3).
Patent GB-1239789-A (GB)
Title: Improvements relating to microwave ovens
Inventor: HAYWOOD WILLIAM MARTIN
IPC: H05B6/66
Filed: 1968-10-31
Abstract: 1,239,789. Supply systems for microwave ovens. DYSONA INDUSTRIES Ltd. 3 Oct., 1969 [31 Oct., 1968], No. 51741/68. Heading H2H. A microwave oven includes a gas-filled tube which ionises and cuts off the oven supply if the field intensity becomes excessive. In the arrangement described, a neon tube 10 is mounted in an oven roof with its tip projecting an adjustable distance into the oven cavity. If the oven is switched on while empty, the increasing microwave field will cause the tube to ionise and complete a circuit through a relay coil 14 which closes a contact 14a. A contactor is thereby de-energized to switch off the oven. The tube may alternatively be mounted in a waveguide carrying power to the oven.
Patent GB-1132969-A (GB)
Title: Polymer extrusion process
Inventor: GARNETT RONALD JAMES MERCER
IPC: B29C48/08
Filed: 1964-12-21
Abstract: 1,132,969. Extrusion-granulating polyamides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 March, 1966 [21 Dec., 1964], No. 51896/64. Heading B5A. Molten polyamide is delivered from an autoclave 1 via a heated fan-tailed valve to a die 2 whose orifice is of modified slot form, see Fig. 1 (not reproduced), the extrudate proceeding to a granulator 6 via a water cooled drum 4 and rollers 5. Further cooling of the extrudate is effected by water sprays 3. Polyamides specifically mentioned are polycaprolactam and polyhexamethylene adipamide. An example is given, wherein the latter material is fed under nitrogen pressure from the autoclave to the die while at a temperature of 270-280 C. and is cooled to about 80 C.
Patent GB-1416430-A (GB)
Title: Electric stepping motors
IPC: H02K21/12
Filed: 1972-11-10
Abstract: 1416430 Electric motors SOC CIVILE DE RECHERCHES EN MATIERE DE MICROMOTEURS ELECTRIQUES 10 Nov 1972 [10  Nov 1971] 52106/72 Heading H2A In an electric stepping motor comprising a thin permanent magnet rotor 8 mounted between two radially spaced stator parts 5, 6, one at least of which has N teeth and the rotor being radially magnetized to have N pairs of alternately positive and negative poles on each of its surfaces, the stator carries an auxiliary permanent magnet 8b facing an extension 8a of the rotor remote from the stator parts 5, 6, the auxiliary magnet 8b having N pairs of alternately positive and negative poles. The auxiliary magnet provides an auxiliary torque enabling the motor to be operated by short unidirectional current pulses, part of each rotor step being produced by electromagnetic torque and part by the torque produced by auxiliary magnet 8b.
Patent GB-1126388-A (GB)
Title: An insulating material
IPC: D04H1/00
Filed: 1965-12-08
Abstract: 1,126,388. Buoyant material. GLANZSTOFF A.G. 8 Dec., 1965 [12 Dec., 1964], No. 52122/65. Heading B7U. [Also in Division B5] A multi-layer buoyant insulating material, e.g. for use in a life-jacket, comprises a fibre fleece covered on both sides with an open woven or knitted fabric or compact fleece material, the fibre fleece consisting of fibres which are wholly or in part of synthetic material, and which have a count of between 0À3 and 6 denier, and which have been treated with a water-repellent finishing agent, the fibres forming a multi-pore system of open capillaries. The fibres of the fleece may be of polyamides, polyesters, or polypropylene, or of staple rayon, and may be used with wool or cotton fibres. The fibres may be crimped, or of profiled cross-section, and may be partly or wholly hollow fibres. In the examples fleeces of polyester fibres (Diolen R.T.M.) or staple rayon (Flox 3t. R.T.M.) are treated with a water repellent such as silicon oil or emulsion e.g. Siliconharz R.E. and Perlit S1 (R.T.M.) or a zirconium-containing paraffin emulsion e.g. Persistol Extra (R.T.M.) and are covered with a woven polyamide fabric (Perlon R.T.M.).
Patent GB-1368909-A (GB)
Title: Foil-strut assembly for a hydrofoil boat
IPC: B63H11/02
Filed: 1972-11-10
Abstract: 1368909 Water-jet propulsion hydrofoil assembly BOEING CO 10 Nov 1972 [3 Dec 1971] 52147/72 Headings B7A and B7V A foil-strut assembly of a hydrofoil craft is mounted at the hull-strut junction for pivoting the assembly to a downward foil-submerged position and for pivoting to the emerged strut and foil position of Fig. 4. The foil-strut assembly has a first inlet and duct 32 for receiving water for the propulsion nozzles 44, 46 in the submerged position and there is a second inlet 60 at the hull-strut junction which ensures a continuous water input for the nozzles in the emerged foil position. In the embodiment shown the first inlet and duct 32 is part of a centre strut 30 which on retraction is received by hull recess 50.
Patent GB-1405645-A (GB)
Title: Additives for the dispersing properties of lubricating oils
IPC: C10M133/56
Filed: 1972-11-13
Abstract: 1405645 Polyolefin derivatives RHONEPROGIL 13 Nov 1972 [17 Nov 1971] 52242/72 Heading C3P [Also in Division C5] Dispersants for lubricating and fuel oils are prepared by completely neutralizing with an ashless nitrogenous basic compound an esterification product of reaction of at least one mono- or polyhydroxy compound with at least one polyolefin substituted carboxylic acid, anhydride, chloride or ester, the residual acidity of said esterification product being such that its complete neutralization requires an amount of nitrogenous basic compound corresponding to a minimum nitrogen content of 0À9 weight per cent in the final mixture. The carboxylic compound may be a reaction product of an unsaturated carboxylic compound, e.g. acrylic, methacrylic, maleic, fumaric or itaconic acids or derivatives, with polyethylene, polypropylene, polybutylene, polyisobutylene or a chlorinated polyolefin. Esterification may be effected in the presence of a catalyst and/or entraining solvent, and the ashless base may be ammonia, an aliphatic, aromatic or heterocyclic monoamine, or an alkylene polyamine, urea, thiourea, hydrazine or cyanamide. Many suitable hydroxy compounds are specified and examples describe the reaction of polyisobutylene/maleic anhydride reaction products with (1 and 3) pentaerythritol and tetraethylene pentamine, (2) glycerol and triethylene tetramine, (4 and 6) phenol and tetraethylene pentamine and (5) phenol and triethylene tetramine; and of chlorinated polyisobutylene/acrylic acid reaction products with (7) pentaerythritol and tetraethylene pentamine and (8) diphenylolpropane and tetraethylene pentamine.
Patent GB-1143139-A (GB)
Title: Improvements in and relating to the oxidation of ferrous compounds and to the reduction of ferric compounds
Inventor: SERCOMBE ERIC JOHN
IPC: C01G49/10
Filed: 1966-11-23
Abstract: 1,143,139. Interconversion of ferrous and ferric compounds. JOHNSON, MATTHEY & CO. Ltd. 17 Nov., 1967 [23 Nov., 1966], No. 52377/66. Heading C1A. Continuous oxidation (using oxygen) of a ferrous to a ferric compound or continuous reduction (using hydrogen) of a ferric to a ferrous compound is carried out in the presence of a catalyst comprising at least one platinum group metal (Pt, Pd, Os, Ir, Rh, Ru) carried by an inert support by supplying a feedstock containing the iron compound in acid solution to a trickle column reactor. The feedstock may be derived from a steel pickling liquor. Examples describe the oxidation or reduction of sulphate feedstocks containing sulphuric acid and of chloride feedstocks containing hydrochloric acid. The catalyst support may be α- or γ-Al 2 O 3 , charcoal, carbon or ceramic materials in the form of granules, pellets, rings or balls. Preferred metal catalyst components are Pd, Pt or an alloy thereof, present in concentrations of 0À1-10%, preferably 1-3%, by weight.
Patent GB-1090629-A (GB)
Title: Improvements in or relating to perpetual calendars
IPC: G09D3/06
Filed: 1965-12-10
Abstract: 1,090,629. Calendars. J. DUHEM. Dec.10, 1965 [Feb.18, 1965], No.52524/65. Heading G3T. A perpetual calendar comprises a shaft 13 rotatable by an operating knob 23 and having fixed thereto a roller 8 indicating the days of the week, and freely mounted thereon rollers 9 to 12 indicating, respectively, each in seven groups of indicia, the days of the month, the months, centuries, and years of a century, means being provided for selectively locking the freely mounted rollers to the shaft 13. The selective locking means comprises a spring 46 for moving the shaft 13 into one of four axial positions in which one of four slotted discs 18 to 21 engages one of four lugs 9c to 12c on the rollers 9 to 12, respectively. The required axial positions of the shaft 13 are determined by the engagement of a cam 31 on the end of the shaft 13 with a cam 32 rotatable by an operating knob 33 into one of four positions in which it is held by the engagement of a spring pressed ball 41 in one of four holes equally spaced around the periphery of a fixed sleeve 34.
Patent GB-1500930-A (GB)
Title: Method and apparatus for skimming liquids
IPC: B23K3/06
Filed: 1975-12-29
Abstract: 1500930 Skimming molten metal BLACKSTONE CORP 29 Dec 1975 [9 Sept 1975] 53022/75 Heading BID [Also in Divisions B3 and F4] A skimmer comprises two spaced parallel blades 13, 14 arranged so that the skimming edges move through circular paths dipping into the surface of the molten metal 11, the blades of the skimmers remaining parallel throughout. In one embodiment, Fig. 1, the skimmer blades are mounted on arms 15 connected eccentrically to discs 17, 21, rotating about parallel axes 19, 23. In another embodiment Fig. 2 the skimming blades 30, 31 rotate in synchronism about parallel axes 32, 33. The rotating skimming blades may be of helical form, but the blades are parallel in any plane perpendicular to their axes of rotation. The skimmers are used to remove the dross and contaminants from the surface of a solder pot, particularly a solder pot used in the fluxless ultrasonic soldering or brazing large aluminium parts.