baber/WOPTO huggingface dataset:
Patent GB-679274-A (GB)
Title: Improvements in and relating to the manufacture of artificial threads, fibres, filaments and the like
Inventor: CARPENTER ALBERT STANLEY
IPC: D01F6/24
Filed: 1950-03-17
Abstract: Artificial threads are produced by extruding a solution of a polydiene such as polybutadiene or polychloroprene or a copolymer of butadiene or chloroprene with styrene or acrylonitrile, containing a catalyst into a coagulant bath containing sulphur dioxide, the polydiene solution having a concentration of at least 10 per cent by weight, and preferably 20 to 40 per cent.  The solvents and coagulant baths may be the same, or those described in Specification 679,040. The viscosity of the polydiene solution may be reduced by passing a stream of ozonized oxygen p  through it.  Specifications 527,075 and 616,276 also are referred to.
Patent GB-571912-A (GB)
Title: Improvements in or relating to liquid lenses
IPC: G02B3/14
Filed: 1942-05-18
Abstract: 571,912. Lenses. DESSAUER, F. May 18, 1942, No. 6727. Convention date, May 25, 1941. [Class 97 (i)] A liquid-filled lens comprises one or more flexible membranes, of high-polymer transparent materials such as vinylic or acrylic resins or cellulose esters, forming one or more chambers filled with liquid of suitable refractivity, the focus being adjusted by applying suitable pressure to the liquid by means of a pump, together with means to maintain the amount of contained liquid constant after adjustment so that the membranes retain their adjusted shape and do not undergo the further deformation which occurs when a constant pressure is maintained on the contained liquid, owing to their imperfect elasticity. The lens shown comprises a single membrane 4. forming, together with a glass plate 1, a chamber 5 containing liquid to which pressure is applied by a pump by way of a tube having in it a cock 8 which is closed when the desired focus is attained in order to maintain the volume of the enclosed liquid constant. The cock 8 may be replaced by a non-return valve which prevents outflow of the liquid, a separate cock being provided to allow this to occur. The lens may comprise a number of membranes forming chambers containing liquids of different refractivities. Concave lenses may be produced by applying suction to a chamber formed between membranes or pressure from without. By employing liquids of different refractivity inside and outside the membrane-bounded chamber, unsymmetrical distortion of the membranes due to weight of liquid on one side when the axis of the lens is horizontal may be avoided. The curvature assumed by the membrane may be controlled by using one having an initial curvature of a thickness varying radially, or by suitable curvature of the contact surfaces of the packing ring 6. The liquid or membranes may be coloured to form light filters, and the liquid may be a solution, the optical properties of which may be varied by altering the concentration.
Patent GB-1501975-A (GB)
Title: Slide valve assemblies
IPC: F16K3/02
Filed: 1975-02-18
Abstract: 1501975 Valves BULK UNIT LOAD SYSTEMS Ltd and G W SNAPE 17 Feb 1976 [18 Feb 1975] 6864/75 Heading F2V [Also in Division G3] The slide 10 of a slide valve assembly is moved between closed, trickle-feed and fully open positions by at least two hydraulic or pneumatic jacks or jack sections. A single multi-cylinder jack having a number of stages corresponding to the number of intermediate positions required or a plurality of single storage jacks operable successively may be used. In the embodiment shown, the slide 10 is pivotally connected to a cross-head 20 pivotally connected to the piston of jack 15 and to the cylinder of jack 17. The piston on jack 17 is connected through an adjustable connection 26, 26a to the piston of a jack 16. Jack 16 is first actuated to establish a trickle-feed position, whereafter simultaneous actuation of jacks 15 and 17 establishes the fully open position. The jacks are actuated by two position solenoid actuated valves (27), (21), Figs 5 to 7 (not shown), included in the circuit, are flow restrictors (28) for each jack and a quickrelease valve (29) for jack 16. Specification 1,383,059 is referred to.
Patent GB-1132491-A (GB)
Title: Improvements in or relating to the manufacture of semiconductor systems
IPC: H01L21/205
Filed: 1966-02-17
Abstract: 1,132,491. Deposition by transport reaction. SIEMENS A.G. 17 Feb., 1966 [18 Feb., 1965], No. 6909/66. Heading C1A. [Also in Division C7] In a process for the deposition of a monocrystalline layer of semi-conductor material (e.g. silicon or an A III B v  compound) from a heated source 7 on a substrate 4 of the same or a different semi-conductor material by means of a gaseous transport reaction, in which a surface layer is first removed from the substrate 4 by reaction with the continuously flowing transport gas at a temperature higher than or equal to the temperature to which the source 7 is heated, the source 7 is at a considerable distance from the substrate 4 during this preliminary reaction and is thereafter brought closer (Fig. 2, not shown) to the substrate which is reduced in temperature in order to start the transport reaction. Doping impurities may be contained in the source 7 or in the transport gas, which may consist of a mixture of hydrogen and/or a halogen and/or a hydrogen halide and/or water vapour with a gaseous compound of the semi-conductor material to be deposited. One or more heating coils 11 may be movable.
Patent GB-435975-A (GB)
Title: Process of manufacturing felt hats
IPC: D04H1/74
Filed: 1935-03-05
Abstract: 435,975. Felt hats. PUYMBROECK, J. VAN, 54, Rue Murillo, Brussels. March 5, 1935, No. 6923. [Class 63] A method of manufacturing felt hats containing non-secreted fibres, e.g. wool, and secreted fibres i.e. fibres such as rabbit's hair which do not normally possess a felting capacity or only in deficient degree but which acquire a felting capacity after suitable chemical treatment, consists in oiling the material by means of a product containing mucilaginous substance, forming a lap from the material by means of a carding machine, winding the lap upon a forming cone and fulling in an acid bath. The oiling material may be a substance containing a decoction of malvaceous plants e.g. mallow roots, or a mixture of malvaceous plants with plants of the order of the composital e.g. tussilage or coltsfoot.
Patent GB-159833-A (GB)
Title: Improvements in liquid raising apparatus
IPC: F02B1/00
Filed: 1921-03-02
Abstract: 159,833. Parent, J. March 6, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Liquid - meters. - Liquid-raising apparatus, which may be used also as a meter, comprises a vessel 1 connected by a pipe 17 to a source of suction, such as the induction pipe of an internalcombustion engine, and by a pipe 16 to the reservoir from which the liquid is to be raised. The float 2 acts on the double valve 30, controlling the suction and atmospheric connections, through a spring 25 and levers 8, 26, so that the spring, in passing from one position of equilibrium to the opposite symmetrical position, operates the valve with a snap action. The fuel inlet pipe 19 opens towards the side wall of the vessel 1. In another form the vessel 1 is formed by means of a horizontal partition in the reserve vessel 1<a>, and the fuel inlet pipe and suction pipe pass through the bottom of the reserve vessel 1<a> and through the partition The float is rigidly connected to the lever 8. In another form, the suction connection is a small hole always open, and the liquid discharge valve at the bottom of the vessel 1 is operated by the float through the spring and levers, and admits air to destroy the vacuum. In another form the suction connection is always open and an atmospheric valve is operated by the float and spring. The apparatus may work with pressure instead of vacuum.
Patent GB-1339674-A (GB)
Title: Coating for protecting a carbon substrate and method for applying  said coating
IPC: C04B41/87
Filed: 1972-02-15
Abstract: 1339674 Coated carbon body BENDIX CORP 15 Feb 1972 [11 March 1971] 6989/72 Heading C1A [Also in Division C3 and B2] A coating applied to a carbon substrate to protect the carbon surface from oxidizing in a moist atmosphere comprises in per cent by weight of the total dry coating (1) 10-65% based on the elemental boron contribution only of at least one of boron, boron oxides, boron carbide, boron nitride or other boron-containing compounds in which the element boron comprises at least 25% of the compound weight, (2) 10-85% based on the metal element contribution only of at least one of Cr, V, Me, Nb, W, their oxides or other compounds containing these elements in which said elements comprise at least 50% of the compound weight, and (3) 5-50% of a carbonizable resin, e.g. phenolics or polymerized furfuryl alcohol, which forms a matrix bond with the carbon substrate to hold materials (1) and (2) adjacent the carbon surface upon being charred, materials (1) and (2) reacting mutually with oxygen in an oxidizing atmosphere to form a water insoluble oxide surface through which the penetration of oxygen is inhibited. The coating is applied in the form of a slurry or paste using an organic solvent, such as acetone, and after drying the coated substrate the resin is cured. A second layer is optionally applied in the same way to fill any surface irregularities. The cured resin is then carbonized by slowly heating to 1400-2000‹ F. in an inert atmosphere. In the examples coatings are prepared from a phenolic resin, boron and one of Cr, W, Mo, V, Nb and chromium oxide.
Patent GB-1490799-A (GB)
Title: Optical radiation detector and method of making the same
IPC: H01L31/103
Filed: 1975-02-19
Abstract: 1490799 Semiconductor radiation detectors RCA CORPORATION 19 Feb 1975 7040/75 Heading H1K A radiation detector, e.g. a solar cell, includes single crystalline P and N regions 18, 16 each of a thickness substantially equal to the minority carrier diffusion length. As shown, the regions are epitaxially grown on a Si substrate 12 of N<SP>+</SP> type. The dopant concentration for P layer 18 is increased towards the end of the deposition to provide a P<SP>+</SP> layer 22 for contact by a metal film electrode 24. Another metal film electrode 26 is applied to the substrate 12 as a contact to the N layer 16. The thickness of the layers 16, 18 ensures that all the excess carriers generated by radiation are trapped by the PN junction 20. The NN+ interface 14 reflects back some of the incident radiation.
Patent GB-873565-A (GB)
Title: Gas-ionising apparatus for use in electro static precipitators
IPC: B03C3/38
Filed: 1960-02-29
Abstract: 873,565. Electrostatic precipitation. SOC. FINANCIERE D'EXPANSION COMMERCIAL ET INDUSTRIELLE S.A. SFINDEX. Feb. 29. 1960 [March 6, 1959], No. 7111/60. Class 39(1). A field emission electrode system for ionising air or the exhaust gases of an internal combustion engine comprises a tubular electrode 1, a second electrode 2 having a pointed end 2a projecting a short way within the tube and a dome Shaped tip on the pointed end having a radius of less than 10<SP>-5</SP> cms. The short distance may be between 1/3 and 1 / 5th of the length of the tubular electrode such as “ and the radius of the dome shaped tip is preferably 10<SP>-6</SP> cm radius. The electrode 2 is a wire and may be the ionising electrode of an electrostatic precipitator. A thin Cu or Ni coating may be evaporated on to the stem of the W or Ti wire electrode 2 to prevent it from oscillating. An alpha or beta radiator of radioactive material may be evaporated on to the dome shaped tip of electrode 2, e.g. thallium 204 is a beta radiator. Either electrode may be earthed.
Patent GB-565435-A (GB)
Title: Improvements in or relating to handles for implements such as knives
IPC: B26B1/10
Filed: 1943-05-06
Abstract: 565,435. Knife &c. handles. RICHARTZ, P., and RICHARDS BROS. & SONS, Ltd. May 6, 1943, No. 7206. [Class 30] A knife &c. handle scale comprises a non- metallic material 13 moulded on to a metal backing member 14 provided with clips to secure it to the side plate 10 of the instrument. The clips may comprise lugs 20 on the member 14 adapted to be bent round into recesses 23 in the plate 10 or may comprise press stud fasteners, the parts of which are carried respectively by the backing 14 and plate 10. Instead of the lugs 20 being on the backing 14 they may be on bolsters 24, Fig. 4, which also have side lugs to anchor them to the material 13. The backing 14 and, if necessary, also the material 13 may be recessed at 18 to receive the ends of the rivets 12 uniting the plates 10. The backing 14 may have lugs 15 and chamfered holes 17 to anchor them to the material 13, as described in Specification 531,196.
Patent GB-746634-A (GB)
Title: Improvements in or relating to aircraft control system
Inventor: CLIFTON JOHN ROBERTSON
IPC: B64C13/00
Filed: 1954-03-12
Abstract: 746,634. Fluid-pressure servomotor-control systems. NORTHROP AIRCRAFT, Inc. March 12, 1954, No. 7239/54. Class 135. In an aircraft control system in which a control surface, e.g. the rudder, is actuated by two hydraulic motors acting in parallel, the spools of the motor control valves are offset in opposite directions, so that the motors exert equal and opposite forces on the control surface in its neutral position with the object of eliminating backlash from the system. As shown diagrammatically in Fig. 4, the torque shaft 21 of the rudder is operated through cranks 22 by the motor cylinders 25, 25a which slide over fixed pistons 26, 26a, the outer ends of the rods of which are freely supported on fixed shafts 17, 17a. Also freely supported on the shafts are quadrants 19, 19a rotable by cables attached to the quadrants and operated by the pilot. The quadrants are connected through rods 32, 32a, including turnbuckles 60, with the spools 31, 31a, of the motor control valves 30, 30a. With the rudder in its neutral position, one of the spools, say 31, is offset from its neutral position, in which the pressures on opposite sides of the piston 26 are the same, e.g. 1500 p.s.i., so that the pressures on the opposite sides of the piston are, e.g., 2000 and 1000 p.s.i. respectively. The result of this will be to turn the torque shaft 21 so as to move the cylinder 25a relatively to its valve spool 31a so that pressures of 2000 and 1000 p.s.i. are applied to the left and right sides respectively of the piston 26a. The pressures on opposite sides of the piston 26 are indicated by gauges 55 screwed into the valve body 30 and communicating with the ends of the cylinder 25. Each gauge comprises a barrel 75, Fig. 5, through which extends a spring-loaded plunger 76, the inner end of which is exposed to the pressure to be indicated, while the opposite end extends beyond the barrel and is graduated by grooves the space between each pair of which represents a pressure of, e.g., 1000 p.s.i.
Patent GB-941984-A (GB)
Title: Improvements in or relating to writing implements comprising retractable writing elements
IPC: B43K24/08
Filed: 1960-03-02
Abstract: 941,984. Reservoir pens. H. RIEPE, and K.-H. DITZE, [trading as RIEPE WERK]. March 2, 1960 [March 4, 1959], No. 7305/60. Heading B6P. In a retractable writing instrument which includes latching mechanism of the type described in Specification 785,249 comprising a ball 7 guided in a cam system 8 having catch positions for the rest and writing positions of the writing unit 4, the ball and the cam system being mounted each in one of two sleeves 5, 10 movable one within the other, and a spring 9 urging the writing unit into the interior of the barrel, abutting surfaces 12, 14 are arranged on the two sleeves in such a way that when the writing unit is in the retracted position these surfaces abut against one another under the action of the spring 9 and relieve the ball 7 of the pressure of the spring. Further abutting surfaces 11, 13 are formed on the sleeves 10, 5 and these relieve pressure on the ball when the writing unit is projected to its greatest extent immediately before being retracted by the spring 9.
Patent GB-405473-A (GB)
Title: Improvements in exercising apparatus
IPC: A63B69/18
Filed: 1933-03-11
Abstract: 405,473. Exercising-apparatus. SACHS, J., 119, Merrill Avenue, Jamaica, New York, U.S.A. March 11, 1933, No. 7481. [Class 132 (i).] An exercising-apparatus comprises a pair of carriages mounted for parallel reciprocating movement in opposite directions, each having a foot supporting platform hinged at one end and adjustably supported at its opposite end to present horizontal or inclined supporting surfaces. As shown, on a base A provided at one end with a pair of jackscrews 16 are mounted a pair of foot-carriages B, C, each consisting of a plate 20 having front and rear pairs of rollers 21, 22 by which the carriages B, C may be moved respectively in guideways formed on the baseboard A. Guide rollers 25 on vertical axes engage the faces of the intermediate and marginal strips dividing the baseboard A into the guideways. Each carriage B, C includes a foot-supporting platform 30 hinged at 32 to the plate 20 and provided with a leg 33 having vertically spaced holes 34 adapted to receive a pin 37 retained by upstanding ribs 38 on the plate 20. A cable 40 is attached to the front ends of carriages B and C, and a cable 41 is attached to the rear ends of carriages B and C, the cables 40, 41 passing round pulleys 44, 47 respectively. The front of the cross-member 15 is provided with a resilient buffer strip 48.
Patent GB-1098213-A (GB)
Title: Marking means for the cassette insertion aperture of sound recording and/or reproducing apparatus
IPC: G11B15/675
Filed: 1966-02-21
Abstract: 1,098,213. Cassette loading tape recorders. STAAR SOC. ANON. Feb. 21, 1966 [Nov. 26, 1965], No. 7481/66. Heading G5R. To indicate the position of the aperture of a cassette loading tape recording apparatus of the type where the insertion of the cassette starts the apparatus, so that the aperture may be easily found at night, when mounted for example in a motor vehicle, lamps are mounted behind windows disposed one at each extremity of the aperture. Alternatively luminescent material may be placed in the same positions.
Patent GB-1533889-A (GB)
Title: Arrangement for extracting divergence-measuring modes in a corrugated guide and a tracking antenna incorporating such an arrangement
IPC: G01S3/42
Filed: 1976-02-25
Abstract: 1533889 Waveguide mode transducers THOMSON-CSF 25 Feb 1976 [28 Feb 1975] 07517/76 Heading H1W [Also in Division H4] An arrangement for extracting divergencemeasuring modes from a corrugated waveguide comprises waveguides coupled thereto having a dominant-mode phase constant approximately equal to the phase constant, in the corrugated waveguide, of the modes to be extracted. The waveguide 1, forming, e.g. part of a monopulse radar tracking antenna, is provided with circumferential grooves 6 of depth about one quarter-wavelength and spaced apart by a fraction of this wavelength. The dominant mode in the waveguide 1 is HE 11  which has a phase constant differing substantially from those of the TE 01 , TM 01  and HE 21  modes. These have amplitudes representing elevation and azimuth errors in the aim of the antenna and are extracted for measurement of these errors. The modes TM 01  and HE 21  have approximately equal phase constants in the guide 1 and are coupled by arrays of short transverse slots 8, 80, 81, 82 into waveguides 9, 10, 90, 100 having a dominant-mode phase constant equal to that of the modes to be coupled. The output of waveguides 9, 10 is combined by a magic-T 13, that of waveguides 90, 100 by a second magic-T 14, and the outputs of these magic-T's are combined by a third magic-T 15. In a modification (Figs. 9-12, not shown), the extracted modes are the TE 01  and HE 21 . In this case, the coupling slots are elongated longitudinally.
Patent GB-1418622-A (GB)
Title: Game having a flat surface and pucks slidable thereon
IPC: A63F7/00
Filed: 1974-02-19
Abstract: 1418622 Table game IDEAL TOY CORP 19 Feb 1974 [30 April 1973] 7601/74 Heading A6H A game comprises a playing surface 14 having first and second end portions 18, 22, a plurality of pairs of apertures 24 in the second portion, a plurality of pucks 16 and independent scoring means associated with each of said pairs of apertures for supporting a puck in one of the apertures 28 of an associated pair and for releasing a puck from that aperture when another puck is placed in the other aperture 26. Each puck may be a ball or marble or a plastics ring 54 having two inner rings retaining a ball bearing 56. The pucks are projected by an angularlyadjustable spring-operated launcher 42. The board is edged with elastic bands 74 stretched between posts 72. A barrier 76 prevents a puck being projected directly into an aperture. A puck entering an aperture 28, Fig. 4 (left), tilts a lever 98 to raise any puck in the associated aperture 26 off its seating to cause it to drop through a hole in the lever down onto the table or support beneath, Fig. 4 (right). In a modification, (Fig. 7) the puck release mechanism allows a puck simply to slide away from its position.
Patent GB-222400-A (GB)
Title: Improvements in machines for digging potatoes
IPC: A01D17/18
Filed: 1924-03-25
Abstract: 222,400. M÷ller, C. F. March 25, 1924. Potato - harvesters. - The potatoes are lifted by a share 4 adjustable by a screw 5 and pass into a grating in the shape of two semicircular troughs 8, 8<1>. The first trough is rigidly supported by the share 4 and the second is secured to the main frame. The potatoes are transferred from the first trough to the second by rotating blades 10 and are engaged in the second trough by the lids 16 of grating baskets 11 carried on a conveyer chain 12. The lids 16 are hinged and are provided with projecting arms adapted to engage corrugated cam surfaces 20. The lids are then shaken and the potatoes separated from the haulms falling through the openings in the lids into the baskets while the haulms are thrown off the lids. As each basket reaches the upper extremity of the travel of the conveyer its lid is opened by a cam 20<1> permitting the potatoes to be discharged into a funnel 21 and thence into a grating drum 22. A rotating spider in this drum throws the potatoes up an adjustable inclined plate against a surface 28 of fabric or the like, the tension of which is ,adjustable by a screw 31. The inclination of the frame carrying the fabric may be adjusted by a member 36. The tension or the fabric is so adjusted that stones, which have passed with the potatoes through the machine, fall practically vertically from its surface while the lighter potatoes, rebounding some distance, fall on the bottom of the casing and are discharged into a box. The stones, falling vertically, are directed by an adjustable baffle 38 out of the machine.
Patent GB-1079019-A (GB)
Title: Improvements in or relating to valve operating mechanism for internal combustion engines
IPC: F02F1/42
Filed: 1966-02-22
Abstract: 1,079,019. Valve gear. CESKE ZAVODY MOTOCYKLOVE NARODNI PODNIK. Feb. 22, 1966 [Feb.23, 1965], No.7644/66. Heading F1B. In a four-stroke I. C. engine having more than two valves in each combustion chamber, a hairpin spring 5, Fig. 2, acts on an interconnecting bridge member 4 to close the respective pairs of inlet or exhaust valves 3. Each valve stem is secured in a hole 6 in the bridge member by a split key 7.