baber/WOPTO huggingface dataset:
Patent GB-892602-A (GB)
Title: A method and apparatus for removing mildew and other stains from water colours, drawings or other paper or parchment documents
IPC: D06B5/00
Filed: 1958-12-18
Abstract: <PICT:0892602/IV (c)/1> <PICT:0892602/IV (c)/2> Mildew and other stains are removed from paper and parchment documents, e.g. prints, drawings, water colours and pastels, by dampening the documents slightly and passing ozone over them. The process may be carried out in a rectangular gas tight container, as shown in Figs. 1 and 3, comprising a pair of transparent sheets 1, preferably heavy plate glass sheets, between which is a peripheral spacing member 2, e.g. a rectangular wooden frame carrying on its upper and lower edges plastic foam or other suitable gas tight strips 3, the container having inlet and outlet connections 6, 7 for the entry and discharge of ozone and enclosing a wire or other open mesh support 5 on which the document 4 is placed for treatment.  The ozone may be produced by pumping air by means of an air pump 8 through a bubbler 9 and drier 10 containing silica gel to a double walled cylindrical glass inner vessel 12 mounted in a container 13, the inner vessel and the outer container both containing saturated aqueous salt solutions, and provided with electrodes 14 connected to an induction coil and contact breaker 15 having its input connections arranged for the supply of electric current either from the mains or some other suitable source of current supply.  A powerful electric current from the induction coil supplied to the electrodes causes a discharge to pass between the salt solutions through the separating space, and the oxygen passing through the space is partially converted into ozone and fed to the treatment container.
Patent GB-409498-A (GB)
Abstract: 409,498. Jet propulsion; gas turbine plant. HOLZWARTH, H., 7, Goethestrasse, D³sseldorf, Germany. March 29, 1933, No. 9505. Convention date, March 30, 1932. [Class 110 (iii).] In a jet-propulsion system for aircraft and other vehicles the driving medium is supplied to the reaction nozzles with an approximately constant heat-content, the heat-content exclusive of this amount being extracted before admission to the nozzles. In the arrangement shown, the medium supplied to the reaction nozzle 33 consists of exhaust gases from a gas turbine 1, 4, from which gases heat has been extracted for the generation of steam for use in steam turbines 22, 25 as described in Specification 401,148. The turbines drive the compressor 29 of the combustion system. At low speeds the nozzle 33 is closed by a valve 32 and the exhaust gases are diverted past a valve 37 to a turbine 34 which drives a propeller 36. When oil is used as cooling medium for the gas turbine, it may be passed through a boiler in which steam is generated.
Patent GB-1558610-A (GB)
Title: Method and apparatus for continously mercerising a textileweb
IPC: D06B7/08
Filed: 1976-10-04
Abstract: Mercerisation is carried out under customary temperature and concentration conditions of the liquor, i.e. at a temperature of 8-30 DEG C and a concentration of 20-55 DEG  Bé, after deaeration of the moving textile web by applying vacuum. The duration of impregnation is at most 10 s, and the subsequent residence time outside the impregnating bath 30-60 s. During the entire impregnation and residence time, the textile web is maintained in a tight strand of guiding. This results in instantaneous penetration of the mercerising liquor during impregnation. The tight strand of guiding is effected in a shortened apparatus in which the textile web is guided in a short liquor container over reaction rolls close to one another. The number of reaction rolls is at least three to six times that of the dipping rolls. The tight strand of guiding prevents shrinkage and the resulting ejection of the liquor from the textile web. This enables a shorter treatment time. Since the liquor bath used receives only a relatively small amount of liquor, cooling of the liquor as well as recirculating of the liquor can be dispensed with.
Patent GB-1134808-A (GB)
Title: Penicillins
IPC: C07D231/14
Filed: 1966-09-14
Abstract: 1,134,808. Penicillins. CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA. 14 Sept., 1966 [24 Sept., 1965], No. 41142/66. Heading C2A. [Also in Division A5] The invention relates to penicillins of formula wherein R<SP>1</SP> is phenyl, halogen-substituted phenyl, alkyl-substituted phenyl, amino-substituted phenyl, or cycloalkyl; R<SP>2</SP> is halogen or C 1-5  alkyl; R<SP>3</SP> is hydrogen or C 1-5  alkyl; and salts thereof. Typical compounds are 1 - phenyl - 3 - methyl - 4 - bromo - 5 - pyrazolyl penicillin, 1 - (p - bromophenyl) - 3 - methyl - bromo - 5 - pyrazolyl penicillin and 1 - cyclohexyl - 4 - methyl - 5 - pyrazolyl penicillin. The penicillins are prepared by reacting 6-aminopenicillanic acid or a salt thereof, with an acid of formula or a functional derivative thereof, wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> have the above meanings. Salts are formed with organic and inorganic bases. The penicillins are effective against penicillinresistant strains of bacteria and may be administered with other drugs (see Division A5).
Patent GB-1475048-A (GB)
Title: N,n-2,2,2-trichloroethylidene-bis-carbonimidoyl-dichloride
IPC: C07C239/00
Filed: 1975-10-09
Abstract: 1475048 Trichloroethylidene bis(carbonimidoyldichloride) BAYER AG 9 Oct 1975 [30 Oct 1974] 41440/75 Heading C2C The novel compound N,N<SP>1</SP>-2,2,2-trichloroethylidene - bis - (carbonimidoyldichloride) of formula CCl 3 CH(N = CCl 2 ) 2  is prepared by reacting N,N<SP>1</SP> - 2,2,2 - trichloroethylidenebisformamide, CCl 3 CH(NHCHO) 2  with an acid chloride in the presence of a diluent at 0-150 C., and simultaneously or subsequently reacting with excess chlorine. Excess acid chloride may be used as diluent. Inorganic and organic acid chlorides are specified. The product is used as a pesticide.
Patent GB-1025242-A (GB)
Title: Improvements in or relating to the manufacture of polyurethane materials
Inventor: AITKEN ROXBURGH RICHMOND
IPC: C08G18/76
Filed: 1962-11-02
Abstract: Polyurethanes are prepared by reacting a hydroxyl group-containing block copolymer of ethylene and 1:2 propylene oxides having an oxyethylene content of from 0.1 to 7% by weight of the copolymer with a polyisocyanate containing more than two isocyanate groups per molecule, said polyisocyanate being either (a) a product obtained by reacting tolylene di-isocyanate with less than a stoichiometric equivalent of at least one polyol having a M.W. not exceeding 1000 or (b) a composition comprising a major proportion of a diarylmethane diisocyanate and from 5-50% by weight of a polyisocyanate of functionality greater than 2. The polyol used for the preparation of the polyisocyanate (a) may be a polyether, polyester or polyesteramide.  In the case of dihydroxy compounds, high temperatures are employed to assist the formation of allophanate groups necessary to form the polyisocyanates having more than two isocyanate groups per molecule.  In Example 1 (A) a block copolymer derived from 1:2 propylene oxide, ethylene oxide and glycerol was reacted with a crude diphenylmethane diisocyanate composition containing some triisocyanate in the presence of stannous octoate, water, triethylene diamine and surfactant.  In Example (2) the polyisocyanate used was prepared by reacting 4.5 equivalents of tolylene diisocyanate with the polyester derived from trimethylolpropane, pentaerythritol and adipic acid.  The polyisocyanate was then reacted with a polyether as in Example (1).
Patent GB-1224223-A (GB)
Title: Apparatus for prebending tubes
IPC: B21D3/05
Filed: 1968-08-30
Abstract: 1,224,223. Winding and reeling; curving. DEMAG A.G. 30 Aug., 1968, No. 41612/68. Heading B3E. Apparatus for the continuous prebending of tubes still hot from rolling and later to be coiled comprises a multisection roller system provided with a common drive, a supporting frame (4) detachably secured to the roller system, and a feed guide (10) for the tubes, the roller system having grooved rollers for calibrating and bending and for calibrating arranged alternately along the path of the tubes, the calibrating and bending roller of the last pair of rollers adjacent the tube outlet being radially adjustable by power operated means and the other calibrating roller of the last pair serving simultaneously for limiting the radial adjustment of said calibrating and bending roller. The apparatus comprises a motor 2, gearing 3, the supporting frame 4 on a base 18 and a slidably removable role magazine 5 containing bending rollers 8, 8a, 8b and calibrating rollers 9, 9a. The rollers are driven through telescopic universal joint shafts 7. The magazine is retained in the frame 4 by bolts 5d, 5e and wedges 11, 11a (Fig. 3). The bending roller 8b is mounted on a pivoted arm 12 actuated by an hydraulic cylinder 13. The calibrating roller 9a adjacent the roller 8b is adjustable by insertion of shims 15 to produce the desired coiling radius to the tube. For removing a magazine the universal joint connections to the rollers, the wedges 11, 11a and the connection between the arm 12 and the cylinder 13 are released and catches 16 are raised. The magazine and supporting frame 4 is moved against the catches by a rod 17 and it is now free from the frame. Finally the catches are lowered and the magazine removed.
Patent GB-920107-A (GB)
Title: Phase shift torquemeter
Inventor: LAKE EDWIN WALTER
IPC: G01L3/10
Filed: 1960-12-03
Abstract: 920,107. Measuring torque electrically. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 1, 1961 [Dec. 3, 1960], No. 41673/60. Class 40 (1). A shaft 1 (Fig. 2), whose transmitted torque is to be measured, carries spaced toothed wheels 2 each associated with a yoke 3 carrying diametrically opposite permanent magnets 4 and search coils 5, the magnets 4 and coils 5 being located with respect to the teeth on wheels 2 such that with rotation of the shaft 1 the A.C. voltages induced in the coils 5 are each displaced by 90 degrees from each other. The four A.C. voltages are fed to potentiometers A, B (Fig. 1) as shown, and the potential difference between the sliders, when located at the centre points, is zero. When transmitting a torque there is a twist on the shaft producing an additional phase difference between the voltages connected to potentiometer A and those connected to potentiometer B, which is indicated on meter C, and eliminated by moving either of the potentiometer sliders, the extent of the movement being indicative of the twist of the shaft, and therefore of the torque being transmitted.
Patent GB-1592978-A (GB)
Title: Microwave food heating package method of heating such package containing  food food so heated and combination of oven and microwave food heating package
IPC: F24C7/02
Filed: 1977-10-07
Abstract: The package (10) has a base which is designed as a heating element (42) and is composed of a carrier (44) and a layer (46) which absorbs microwaves, becomes hot thereby and heats the food from underneath. The food can also be heated by the direct irradiation of microwaves. The extent of this irradiation is reduced by a shield (38); said shield can have openings (40) which still transmit part of the irradiation. The package can thus be adapted to the food which it is intended to accommodate, with the result that even just part of the food is heated, if required. Converting part of the microwave energy into the heat of the heating element (42) also permits baking, browning and formation of crusts, which is not normally possible with simple irradiation by microwave energy. <IMAGE>
Patent GB-1214757-A (GB)
Title: Method of guiding moving webs
IPC: G05D5/06
Filed: 1969-08-21
Abstract: 1,214,757. Automatic web guiding. GPE CONTROLS Inc. Aug.21, 1969 [Nov.18, 1968], No.41804/69. Heading G3R. The lateral position of a moving web is automatically corrected in dependence on deviation of lateral position and angular deviation of a longitudinal portion of the web. In Fig.3, lateral displacement of the edge of a moving web 52 at two longitudinally spaced points in the vicinity of a a roller 58 is detected by photo-electric detectors 60, 62 the outputs of which are separately applied to amplifiers 66, 68. The gains of the amplifiers are set to different values by feedback potentiometers 70, 72 so that the amplifier outputs, applied differentially to an amplifier 76 produce a resultant signal having components dependent on lateral displacement and longitudinal inclination of the web relative to detectors 60, 62. The resultant signal controls a pivotted jet 86 so that a hydraulic actuator 88 is operated to pivot a pair of rollers 54, 56 and thus steer the web back to a desired lateral position with its edge in a desired line of travel. In a modification, the edge of a web is maintained in a constant lateral position relative to a reel on which it is being wound by automatically controlling the lateral position of the reel relative to a roller providing frictional restraint upstream. Application to the maintenance of the centre of the web, instead of its edge, in a desired position is also referred to.
Patent GB-1478019-A (GB)
Title: Lamp constructions
IPC: F21V19/00
Filed: 1973-09-07
Abstract: 1478019 Lighting fittings THORN ELECTRICAL INDUSTRIES Ltd 4 Sept 1974 [7 Sept 1973] 42256/73 Heading F4R [Also in Divisions H1 and H2] A lighting unit, e.g. a tungsten halogen sealed beam headlamp, includes a lamp 12, Fig. 1, having an envelope closed by an end seal, and support 11 for mounting the lamp demonstrably in a predetermined position with respect to the reflector 10 and comprising a holder which clasps the end seal structure by an interblocking rib and groove arrangement 17, 18, 24 extending transversely of the lamp axis to locate the lamp against axial displacement and the reflector 10 having on its reflecting surface integral protrusions 15 on which the support 11 is mounted. The holder may comprise a plastics frusto-conical member 20, mounted on the reflector 10, with the grooves 24 being formed in a flared sleeve 23. The arrangement has sufficient resilience to enable the ribs 17, 18, which may be provided on a capping box 16, forming part of the end seal structure, to snap into engagement with the holder. Alternatively the holder may be made from resilient sheet metal having two legs shaped in accordance with the outline in Fig. 1, in this event additional abutment surfaces should be provided to prevent sideways displacement of the lamp. Fig. 2 shows another embodiment in which a double-ended lamp is 35 mounted such that the grooves 29 in the flat pinch seals 36 are engaged by respective ribs 56 formed at each end of the metal strip holder. The side portions 55 of the holder may be folded over and welded or crimped to the other side portion 54 to permanently lock the lamp 35 in its mounted position, however if the mounting is to be detachable, the welding &c., of the folded over side portion is not carried out. Arc discharge lamps may be similarly mounted. The lamps may be connected to their terminals by soldering, crimping, &c.
Patent GB-1142423-A (GB)
Title: Field on projection microscope
IPC: H01J37/08
Filed: 1967-09-18
Abstract: 1,142,423. Ion beam apparatus. NATIONAL RESEARCH DEVELOPMENT CORP. 18 Sept., 1967 [19 Sept., 1966], No. 42402/67. Heading H1D. A field-ion shadow projection microscope comprises means for producing an ion stream having a source diameter of a single atom or molecule M, a specimen holder 2 for a specimen 3 to be examined, and a target 4 on which an ion image of the specimen is projected. The target may be fluorescent screen which can be observed through an optical microscope or through an image intensifier. Alternatively as shown in Fig. 1, the target 4 may be a thin aluminium foil producing secondary electrons which provide an enlarged image at a final image plane, for example on a fluorescent screen or on a photographic plate. In a modification, Fig. 2 (not shown), the secondary electrons are emitted on the side of the target struck by the incident ions, and the electron image is deflected through a right angle by a magnetic field.
Patent GB-929556-A (GB)
Title: Aircraft maneuver stabilizer
Inventor: BUXTON ELLIOTT ROBBINS
IPC: G05D1/08
Filed: 1960-12-09
Abstract: 929,556. Automatic steering control of aircraft. NORTH AMERICAN AVIATION Inc. Dec. 9, 1960, No. 42536/60. Drawings to Specification. Class 38 (4). An aircraft is stabilized in attitude about one of its principal axes by a control signal which includes a component proportional to the product of the rates of turn of the aircraft about two other principal axes. To compensate for gyroscopic effects due to different moments of inertia about pitch, roll, and yaw axes of an aircraft, potentiometer-type pick-offs associated with rate of pitch and rate of roll gyros are connected in cascade to produce an output, representative of the product of pitch rate and roll rate, which is applied, together with a signal from a potentiometer associated with a rate of yaw gyro, to control a fluid-pressure extensible link between a manual steering control member and a fluid-pressure servo-system actuating the rudder. In a similar manner, pick-offs associated with the yaw and roll rate gyros are connected in cascade to produce an output, representative of the product of yaw rate and roll rate, which is applied, together with a pitch rate signal, to control an extensible link between another manual steering control member and a fluid-pressure servo-system actuating the elevators.
Patent GB-945445-A (GB)
Title: Improvements relating to synchromesh gears
Inventor: GARDNER HARRY
IPC: F16D23/02
Filed: 1961-11-29
Abstract: 945,445. Positive clutches. AUSTIN MOTOR CO. Ltd. Nov. 5, 1962 [Nov. 29, 1961], No. 42609/61. Heading F2C. In a friction synchronized positive clutch for a change-speed gear, the working surface of a synchronizing cone 2 is coated at 3 with molybdenum or an alloy or composition of high molybdenum content and the balk ring 4 is made of high tensile steel, sintered steel or sintered steel alloy with sufficient carbon content to permit the balking cams 6 to be hardened by high-frequency induction heating followed by rapid quenching. The cams 6 are hardened to a depth of from 0.006 to 0.01 of an inch. After hardening the coned bore of the balk ring 4 is threaded and formed with oil grooves 8. The coating 3 of the synchronizing cone 2 is applied by spraying or electro-deposition and has a thickness of 0.010 to 0.014 of an inch.
Patent GB-889155-A (GB)
Title: Door closers
IPC: E05F3/10
Filed: 1959-12-16
Abstract: 889,155. Door operating appliances. PARKES & SONS Ltd., JOSIAH, MAITLAND, D. S., and TREDWELL, G. L. Nov. 25, 1960 [Dec. 16, 1959], No. 42717/59. Class 65(1). A door closer comprises a piston 11 in an hydraulic cylinder 10, moving on opening a door against the a action of the spring 12 and the working fluid being displaced through the non-return valve 16; on release of the door spring 12 tends to reverse the motion of the piston 11 and cause the door to close, the working fluid returning to the other side of the piston by at least one restriction valve 17 and an associated flow tube 29, one end of the flow tube being in the low pressure chamber 24 and the other end at all times passing through and communicating with the low pressure side of the piston. The restriction valve 17 controls the speed of flow of fluid through the passages 27, 24, 28 and operates throughout the movement of the piston. A second valve 18 which operates over the last part of the closing movement to increase the speed and ensure closure or latching of the door is brought into action by the piston moving the spring loaded hollow plunger 30 so that the external annular recess 33 with ports 34 is aligned with the valve 18 through which the fluid flows to the chamber 24 and through the return tube 29. The safety valve 37 allows the door to be forcibly closed without subjecting the closer to unduly high pressures. The door is connected to the spindle 15 by a suitable link mechanism. In modifications either or both the non-return valve 16 and return tube 29 may be mounted eccentrically with respect to the cylinder 10.
Patent GB-1087650-A (GB)
Title: Improvements relating to tobacco smoke filters
Inventor: RAYNER GRAHAM HARRY
IPC: A24D3/16
Filed: 1965-10-08
Abstract: A filter for tobacco smoke comprises a tobacco smoke filter material of a fibrous, filamentary or sheet type treated with an alkali-metal salt or alkaline-earth salt of N, N-dimethylglycine. Preferably the salt is the potassium salt.  The salt may be applied by spraying the filter material with a solution of the salt and drying to remove the solvent.  The amount of salt added is such as to increase the original weight of the filter material by from 5 to 40%.
Patent GB-1172114-A (GB)
Title: Snap-Acting Thermostatic Electric Switch
IPC: H01H37/54
Filed: 1967-09-20
Abstract: 1,172,114. Thermal switches. TEXAS INSTRUMENTS Inc. 20 Sept., 1967 [19 Dec., 1966], No. 42846/67. Heading H1N. A thermally-responsive electrical switch includes a final contact 9, a snap-acting thermally responsive plate element 37, coupled by a heatconductive member 42 to an electrically conductive heater plate 39 movable together with element 37 and a contact 43 movable into and out of engagement with fixed contact 9 in response to snap-action of element 37. Movable contact 43 is mounted on heater plate 39 secured by rivet 42 to element 37 which is a snap-acting bimetallic disc supported by ears engaging the arms 31 of a spider 19, the element being retained by snap-ring 35, spider 19 being mounted by rivet 20 on an adjusting screw 23 threaded in base 1, turning screw 23 raising or lowering bimetallic disc 37 with reference to fixed contact 9 and thereby altering its initial tension to calibrate the switch. Metal cover 7 is welded to metal base 1 to form a hermetically sealed compartment. Heater 39 shields element 37 from arcing and ceramic cap 11 shields base 1 and cover 7 from arcing. Fixed contacts 9 are connected to terminals 3. As shown, the switch has three pairs of contacts 9, 4, 3, heater 39 forming the common junction for a star-connected 3- phase motor, heater element 37 being heated partly by heat from the motor ports and partly by heat from heater 39 by conduction through rivet 42, by convection and radiation.
Patent GB-1156148-A (GB)
Title: Refrigeration method and apparatus
IPC: F25D17/08
Filed: 1966-09-27
Abstract: 1,156,148. Refrigerators. CHEMETRON CORP. 27 Sept., 1966 [22 Oct., 1965], No. 43033/66. Heading F4H. Liquefied gas is evaporated in heat exchangers 31, 33 and the vapour is passed into a first network of longitudinally spaced ducts 30, 32, 40, 44 formed about the storage compartment 28 of an insulated container, the vapour then passing to a second network of ducts 45, 46, 49, 50, 53, 54 adjacent the external casing of the container before being vented to atmosphere. Headers 36, 37, 39, 41, 43, 47, 48, 51, 52, 55 interconnecting the ducts are provided. Heat exchangers 31, 33 are arranged to discharge into alternate ones of the ducts 32 in counterflow. The internal surfaces of the external casing may be lined with insulation and this in turn may be lined with material of good thermal conductivity.