baber/WOPTO huggingface dataset:
Patent GB-1510816-A (GB)
Title: Radiation screen
IPC: G21K1/04
Filed: 1975-06-26
Abstract: 1510816 Radiation source containers and beam limiting apertures KERNFORSCHUNGSANLAGE JULICH GmbH 26 June 1975 [28 June 1974] 27151/75 Heading H5R A housing for a source of radiation comprises an adjustable beam-limiting aperture comprising a plurality of screen portions in the form of concentric part-spherical shells mounted on bearings so as to be rotatable about axes intersecting at the common centre of the spheres where the source of radiation is to be located, rotation of the screen portions effecting a change in the aperture size. In Fig. 1a the screen portions are 1, 2, 3, 4 mounted as opposed perpendicular pairs, each pair defining a slit 5, 6, the screen portions being rotatable about axes parallel to the associated slit. Each pair is interconnected for corresponding opposed motion by being mounted on yokes 7, 8, 9, 10 which are linked by respective sets of bevel gears 16, 18 (20) Fig. 2 (not shown). The slits can be defined by abutting jaws or interleaving lamellae. In Figs. 2a, 2b (not shown), the spherical screen portions are more substantial and have square apertures, the degree of overlap of which can be varied by a mechanism substantially similar to Fig. 1a. The spherical screen portions can also be relatively rotated to produce rectangular or parallelogram form apertures. Figs. 3a to 3c (not shown) illustrate a device somewhat similar to Figs. 2a, 2b, but in which the screen portions have right-angled cutouts rather than squares, the screen portion being mounted in respective universal mountings to vary the degree and shape of the overlap of the screen portions and hence the aperture. Figs. 4a to 4e (not shown) depict a device in which the part-spherical screen portions are in the form of four jaws which are brought together or moved apart to vary the aperture. The jaws are mounted in a complex system of universal mountings to permit the maximum variability of relative movement and the jaws are specially shaped by bevels on their interfaces to prevent "leakage" of the radiation between the jaws.
Patent GB-1389384-A (GB)
Title: Anionic polymerization of pyrrolidone
IPC: C08G69/00
Filed: 1973-06-07
Abstract: 1389384 Polymerizing pyrrolidone MONTECATINI EDISON SpA 7 June 1973 [9 June 1972] 27215/73 Heading C3R Pyrrolidone is polymerized in the presence of a catalyst comprising an alkali metal pyrrolidonate or a quaternary ammonium pyrrolidonate and an activator comprising an olefin substituted by fluorine or by chlorine and fluorine. A coactivator also may be present. In examples pyrrolidone is polymerized in the presence of catalysts comprising benzyltrimethylammonium pyrrolidonate and potassium pyrrolidonate with tetrafluoroethylene, chlorotrifluoroethylene and hexafluoropropylene as activators; coactivators used in some examples are carbon dioxide, trimethylchlorosilane, stannic chloride and phenylisocyanate.
Patent GB-1299256-A (GB)
Title: A device for measuring or detecting a force
Inventor: GORANSSON NILS PAUL
IPC: G01L1/12
Filed: 1970-06-05
Abstract: 1299256 Force transducers SAAB-SCANIA A B 5 June 1970 [5 June 1969] 27226/70 Heading G1N A transducer for converting tension, compression or bending forces into electrical signals comprises a body of magnetostrictive material 1 (or 16, Fig.3, not shown), a primary winding 7 (or 22) through a large hole 2 (or 17) in the region of which compression and tension occur when the body is subjected to a force to be measured, and at least two secondary windings through respective smaller holes which do not affect the stress distribution, the arrangement being such that compression at one of the secondary windings is accompanied by tension at the or an other. As shown in Fig. 1, there are four secondary windings 8, 9, 10, 11 which may be connected in respective arms of a bridge circuit to obtain thermal compensation. The body 1 may be a single sheet of silicon alloyed transformer sheet metal or several sheets cemented together.
Patent GB-1472577-A (GB)
Title: Power switch holding device for an electric camera shutter
IPC: G03B17/38
Filed: 1974-06-19
Abstract: 1472577 Cameras ASAHI KOGAKU KOGYO KK 19 June 1974 [21 June 1973] 27239/74 Heading G2A Depressing a shutter release button (not shown) moves a rod 1 which moves a first member 3 to close a switch 7 for energizing a shutter timing circuit (not shown), further movement of the first member 3 causing a second member 8 to move and thereby rotate a lever 12 clockwise to release a lever 15, lever 15 rotating anti-clockwise to operate the shutter, diaphragm and mirror and to rotate lever 12 further clockwise, so that lever 12 moves the second member 8 to a position in which a pin 10 prevents the first member 3 returning to its original position even if the button is released. The switch 7 thus remains closed. If the button is released before lever 15 rotates, then the member 3 will return and switch 7 will re-open to save power.
Patent GB-1391207-A (GB)
Title: Particle analyzing apparatus
IPC: G01N15/12
Filed: 1972-06-12
Abstract: 1391207 Particle analyzing apparatus COULTER ELECTRONICS Ltd 12 June 1972 [29 June 1971] 27249/72 Heading G1N A Coulter type particle analyzing apparatus in which a high frequency electrical field is established across an aperture includes a coiled metallic conduit providing an inductance across which is connected a tuning capacitor. In the arrangement of Fig. 1 an electrolyte carrying particles to be analyzed flowing along metallic conduit 12 is by-passed by impact probe 16 through metallic T-shaped fitting 26, metallic helical coil 18 and conduit 20 back to the reduced diameter portion 14 of the main flowpath. The facing ends of fitting 26 and coil 18 are provided with flanges which sandwich therebetween an insulating plate 42 carrying an aperture, Fig.2 (not shown). Metal-fluid interfaces are provided by the interior surfaces of fitting 26 and coil 18 at its end 24 so as to apply the electrical field across the aperture. Particle analyzing apparatus 46 which includes the high frequency source and detecting apparatus is connected to conduit 12 and the coil 18, capacitor 56 being tuned so that the parallel resonant circuit 58 of coil 18 and capacitor 56 have a high impedance to the electric current at the high frequency to prevent the aperture from being effectively short circuited. In an alternative arrangement, Fig.3 (not shown), the conduit 12 is of constant cross-section and the coil 18 is connected in the by-pass circuit prior to the aperture support 42, the electrolyte being diluted before passing through coil 18. Separate power and detector circuits may be used, Fig.4 (not shown) coil 18 being energized from a primary winding and the circuit 58 tuned for series resonance to enable the current to be applied to the aperture, and the detector being connected to the points 52, 54. Fig.1 may be modified by inserting a second hellical metallic conduit between the aperture support 42 and impact probe 16 which is also tuned by a capacitor, Fig.5 (not shown). The particle analyzing circuitry in this case is connected by un-grounded leads to the junctions between the ends of the coils and aperture support 42. The aperture support may be mounted in a pipe-section facilitating cleaning and inspection, Figs.6, 7 (not shown) and the coils resonated at different frequencies. An alternative arrangement of apparatus Fig.8 enables both high frequency and low frequency (D.C.) current flow across the aperture in tube 126'. The fluid is drawn through the aperture, interior of tube 126' and coil 128' by a vacuum pump, the electrical fields being applied to electrodes 142', and 150' the latter being connected to the end of tube 128'. A D.C. detecting circuit is connected to terminal 138' and an r.f. detecting circuit to 156'.
Patent GB-261726-A (GB)
Title: Improvements in scavenging internal combustion engines
IPC: F02B75/02
Filed: 1926-11-01
Abstract: 261,726. Krupp Germaniawerft Akt.- Ges. F. Nov. 17, 1925, [Convention date]. Cylinders, arrangement and shape of ports in, varying clearance of, and cooling.- The scavenging ports B of a two-stroke-cycle engine cylinder A are arranged in two groups symmetrically with respect to the exhaust ports C and direct the air upwardly so that it takes the path shown by the arrows and passes between the two sets of ports B, which may be tangential to an imaginary cylinder coaxial with the cylinder A. In the case of a double acting cylinder, the same ports B may be used for both cylinder ends by providing movable guides which are alternately directed to opposite ends of the cylinder; the piston face may be more hollow on the piston-rod side than on the other side to facilitate the flow of scavenging air and a hollow water-cooled filling-piece may be provided inside the cylinder head adjacent the piston-rod stuffing-box.
Patent GB-1016052-A (GB)
Title: Improvements in or relating to apparatus utilising a mains water supply
Inventor: JARRETT EDWARD WALLER
IPC: A47L15/42
Filed: 1963-07-10
Abstract: 1,016,052. Washing machines. KENWOOD MANUFACTURE (WOKING) Ltd. July 10,1964 [July 10, 1963] ,  No. 27381/63. Heading D1A. [Also in Division A4] A washing machine has a water inlet, to which mains water is supplied from a cock through an air gap, and which has walls 9,11 inclined to deflect generally downwardly water impinging downwardly thereon, and a wall 10 connecting the walls 9,11 so inclined as to deflect downwardly any upward splash deflected from the wall 11.
Patent GB-505556-A (GB)
Title: Electron-multiplying amplifier valve
IPC: H01J43/22
Filed: 1937-10-08
Abstract: 505,556. Thermionic valves ; electron multipliers. RADIOAKT.-GES. D. S. LOEWE. Oct. 8, 1937, No. 27383. Convention date, Oct. 8, 1936. [Class 39 (i)] In an amplifying valve with electron multiplication the cathode 1 is surrounded by a control grid 2, one or more multiplying grids 3, 4, 5, outside which is a grid 6 serving as an anode and surrounding the whole a plate electrode 7 also serving as a multiplying electrode. The grids are preferably so arranged that the wires as seen in the direction of the electron stream, cross each other. Additional screening or control grids may be employed. In a modification the grids 3, 4, 5 are dispensed with the multiplication taking place at the electrode 7 only. The Specification as open to inspection under Sect. 91 also describes the subjectmatter of Specifications 27384/37 and 505.557. This subject-matter does not appear in the Specification as accepted.
Patent GB-356947-A (GB)
Title: Improvements in the manufacture of transformers, loading coils and the like
IPC: H01F41/02
Filed: 1930-09-15
Abstract: 356,947. Transformers. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and BLIGH, N. R., of General Electric Co., Wembley, Middlesex. Sept. 15, 1930, No. 27541. [Class 38 (ii).] The high-permeability magnetic material for a transformer or loading coil is first wound on a former so that it acquires approximately the shape that it will have when in final position, subjected to heat treatment, and then wound upon the electric circuit without subjecting the material to deleterious mechanical strain. In the example shown the material 1 is shaped and then wound by threading through the aperture in the coil former 3 in the manner of a key-ring.
Patent GB-483150-A (GB)
Title: Improvements in scaffolding or other tubular metal or like structures for buildings and like constructions
IPC: E04G7/02
Filed: 1936-10-12
Abstract: 483,150. Scaffolding connectors. SCAFFOLDING (GREAT BRITAIN), Ltd., and JONES, D. H. Oct. 12, 1936, No. 27628. [Class 20 (ii)] A connector for connecting scaffold members together at angles, comprises a supporting member fixed to one scaffold member, and provided with a stud or projection and an abutment face, while the other scaffold member is provided with a socket to engage the stud so disposed that the end of the second scaffold member is jammed against the abutment face on the first scaffold member. The supporting member is formed as a sleeve c<1> fixed by a screw c<12> to an upright scaffold member and is provided with supporting ledges c<3> each provided with a tapered stud c<6> to engage a socket b<1>, b<2> on a horizontal scaffold member b, whereby the end of the horizontal scaffold member is jammed against an abutment face c<3> on the supporting member. The supporting ledges may be curved to embrace the scaffold members and be provided with drainage apertures c<11>, and may have stiffening brackets c<14> on their undersides. The supporting ledges may be in one plane or as shown in an alternative form may be arranged in two superposed parallel planes, those in each plane at rightangles to the others.
Patent GB-350345-A (GB)
Title: Improvements relating to pump-operated fluid-ejecting devices
IPC: F16N3/08
Filed: 1930-09-16
Abstract: 350,345. Lubricating-cans. WESTWOOD, A. E., The Priory, Wootton Wawen, Warwickshire. Sept. 16, 1930, No. 27662. [Class 12 (ii).] In an oil-can from which liquid is ejected through a spout 4 by a pump 3 operated by a handle 8, liquid is trapped in the neighbourhood of the pump-inlet 6 by means of a partition 10, provided with a check valve, such as a ball 12 in a tube 11. Specification 273,199, [Class 12 (ii). Lubricating passages &c.], is referred to.
Patent GB-323479-A (GB)
Title: Improvements in and relating to electrical resistances and reactances
IPC: H01C10/38
Filed: 1928-09-26
Abstract: 323,479. Lepas, P. H. L. Sept. 26, 1928. Variable resistanccs; inductances. - An automatically variable resistance or reactance, particularly for motor starting, speed or field regulation, comprises a helical winding associated with a slider in direct contact with the resistance, the slider being urged across the winding by centrifugal force and opposed by the action of adjustable springs. The resistance element is rectangular in section with machined facing, and comprises oxidized nickel chromium with or without additional mica insulation. Applications to synchronous, asynchronous, repulsion and continuous current motors are mentioned. In one arrangement, Fig. 3, resistances 4 are housed in detachable grooved or finned chambers 21 and are engaged by sliders 5 which, at the end of their travel, connect short-circuiting rings 19, 20. An overload or other protective device, comprising a calibrated fuse or thermal device 24, Fig. 4, may be provided. In another construction, Fig. 6, the resistances 4 are housed within the rotor 27 and sliders 5 are actuated by cams 29 or by toggle levers. In another arrangement, for speed control, the sliders are engaged by spring plungers actuated by adjustable inclined abutments located on the stator framework.
Patent GB-1089037-A (GB)
Title: Improvements in or relating to constructional elements particularly for furniture
Inventor: DENNERY JACQUES
IPC: A47B96/14
Filed: 1965-06-30
Abstract: 1,089,037. Shelving. SOCIETE DES ETABLISSEMENTS DENNERY, SOC. ANON. June 30, 1965, No. 27675/65. Heading A4B. An upright for supporting shelf brackets 13 comprises a rectangular section tube having on its shorter sides 1 three longitudinal ribs extending both outwardly 3 and inwardly 2 of the associated side 1 which is provided between the ribs with a plurality of vertically spaced slots (5) to receive hooked ends 14 of the brackets. T or L-section members 7, 10 have notched legs 8, 11 respectively engageable in the slots (5) to retain panels 18 which may be perforated to support hooks.
Patent GB-667231-A (GB)
Title: Photograhic camera for stationary or moving pictures provided with automatic exposure regulation
IPC: G03B7/08
Filed: 1949-10-31
Abstract: 667,231. Photo-electric exposure control. POLLASCHEK, V. Oct. 31, 1949 [Nov. 2, 1948; Sept. 5, 1949], Nos. 27820/49 and 27821/49. Class 40 (iii). [Also in Group XX] An automatic exposure adjusting device for a camera comprises a rotatable screen 4 between the objective 6 and the film carrier 25, controlled by an electromagnetic rotor 3 energized by a photo-cell 1, the opacity of which screen varies in such a way that the reduction of light to the film for each position of the screen is proportional to the luminosity of the object, independently of the response characteristics of the photo-cell and the rotor. The screen 4, Fig. 1, is carried on the shaft 3<SP>1</SP> of the rotor 3, and its surface is divided into a series of segments 51, Fig. 2, whose opacity in the light path is made, by a photo-chemical or other process, to be proportional to the light intensity to the photo-cell 1 for that position of the rotor 3, the extremes of rotation being indicated by two coloured marks 7, 8 visible through the viewfinder 12. As shown (Fig. 2), the window 23 in the film carrier 25 contains at least three sections 5<SP>1</SP>, and the speed and direction of travel of the shutter slide 13 is therefore arranged to compensate for the variation in opacity over the area of the window. Alternatively, (Fig. 3) the shutter may comprise a rotary disc 14 whose exposure part 15 is also segmentally graded in opacity, to compensate for the varying opacity of the screen 4. The screen may alternatively consist of an opaque screen with slots of varying width to vary the intensity of light reaching the film. An adjustable screen 16 may be introduced in front of the photo-cell 1 to allow for different film sensitivities and/or colour filters, controlled by a knob 17, its position being indicated on a dial 18. A further screen 19 may be introduced to allow for variations in exposure time, this screen being automatically adjusted by gears, levers, &c. not shown.
Patent GB-466328-A (GB)
Title: Improvements in and relating to control devices for liquid heaters
IPC: F24H9/20
Filed: 1936-10-14
Abstract: 466,328. Valves. JUNKERS & CO., GES. Oct. 14, 1936, No. 27883. Convention date, Oct. 31, 1935. [Class 135] A water heater con trol device such as a valve device for main taining a constant flow of water to the water heater has the valve member and seat formed as a separate unit, independent of the actuating member, adapted to be removably secured in position. The valve member 27 which co-operates with an aperture 22 in a removable seat member 28 is supported, in the form shown, by a flat S-spring 30 the ends of which engage in recesses in a flange on the seat member. In a modification the S-spring is replaced by a cino-helical spring. The upper end of the valve spindle is finished with an enlarged head 29 made of metal coated with insulating material or made entirely of insulating material such as that known under the Registered Trade Mark " Bakelite." The actuating diaphragm 13 clamped between two parts of the casing is subject to the pressures across a restriction in the water conduit and bears on one side against the button 29. On the upper side it carries a pad 33 engaging the spindle of a spring loaded valve controlling the supply of gas to the burner 17.
Patent GB-1525098-A (GB)
Title: Process for the preparation of petroleum resins
IPC: C08F240/00
Filed: 1977-07-04
Abstract: 1525098 Petroleum resins; purifications of feedstock by partial polymerization of its distilland EUTECO SpA 4 July 1977 [5 Aug 1976] 27926/77 Heading C3P  Petroleum resins are prepared by polymerization of a mixture of an unsaturated C 5  hydrocarbon fraction (b.p. 25-130 C./l atmosphere, and an olefinic hydrocarbon distillate (b.p. # 250 C./ I atmosphere) in a weight ratio of 0À05 to 1 : 1 using a Friedel Crafts catalyst: the olefinic hydrocarbon distillate is distilled from a hydrocarbon fraction which has been pretreated with activated clays so as to partially (#20%) prepolymerize it and thereby eliminate undesirable materials from the distillate subsequently recovered.
Patent GB-960865-A (GB)
Title: Improvements in or relating to time and pressure or temperature sensitive electric switches
Inventor: SHOUKSMITH JOHN
IPC: F25D21/00
Filed: 1959-08-15
Abstract: 960,865. Fluid actuation of switches. HERON ELECTRICAL DEVICES Ltd. Nov. 15, 1960 [Aug. 15, 1959], No. 27957/59. Drawings to Specification. Heading H2B. A control device for the defrosting means of a refrigerator comprises a time switch and a pressure sensitive device, such as a bellows, adapted to operate the time switch contacts, the pressure sensitive device having means for connecting its interior directly to the fluid system of the refrigerator evaporator so as to be directly responsive to changes of pressure in said system. Specification 807,812 is referred to.
Patent GB-413264-A (GB)
Title: Improvements in and relating to electro-dynamic devices for the conversion of measuring values
IPC: G01R13/00
Filed: 1932-10-07
Abstract: 413,264. Transformers. INTERNA. TIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 7, 1932, No. 27987. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 10, 1932]. [Class 38 (ii).] The voltage rates of a transformer a, Fig. 1, is varied by means of a slotted disc e of diamagnetic material which moves in a gap in the transformer core, the relative position of the disc being determined by means of a measuring instrument so that a voltage is obtained at the secondary terminals which is proportional to the reading of the instrument, the transformer core may have two gaps, the disc then being provided with two slots. The slot or slots in the disc may be filled with a paramagnetic material. Fig. 3 shows a thermometer arrangement in which, to give an alarm when a predetermined temperature is reached, the pointer b is fitted with a plate c which is introduced into the air gap of a transformer d when the critical temperature is reached.
Patent GB-151996-A (GB)
Title: Apparatus for indicating the inclinations of an aeroplane in flight
IPC: G01C9/00
Filed: 1920-10-04
Abstract: 151,996. Peradotto, A. Oct. 4, 1919, [Convention date]. Clinometers for aircraft. A transparent or partly transparent spherical casing 1 is filled with liquid in which is suspended a sphere 7 or a hemisphere or segment greater than a hemisphere, of slightly less diameter than the casing 1, and carrying an equatorial band 7<1> which constitutes the indicator. The position of the indicator is read by means of graduations on two great circles 2, 3 which are normally horizontal and vertical respectively. The casing may also be provided with markings corresponding to definite angles of inclination. An expansion chamber for the liquid comprises a sealed cylinder 4 communicating with the casing through an aperture 5 and containing a cone 6 having an aperture 5'. The cone serves to prevent air from passing into the casing when the instrument is inverted. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement in which the member suspended within the casing 1 consists of a ring or disk. This subject-matter does not appear in the Specification as accepted.