baber/WOPTO huggingface dataset:
Patent GB-1068564-A (GB)
Title: Plates for light control
IPC: F21V5/00
Filed: 1964-04-27
Abstract: 1,068,564. Refractors. I. GOODBAR. April 27, 1964 [May 23, 1963], No. 17455/64. Heading F4R. A transparent plate for light control is formed of a material the refractive index n which is at least 1À155, one face of which is formed as a plurality of planes, alternate ones of which are parallel and adjacent pairs of which are inclined to one another at a dihedral angle in radians of   substantially #/2- ¢ cosec<SP> -1</SP>n The plate may form the base or sides of electric light fittings and is designed to reduce glare. A fitting for fluorescent discharge lamps has a transparent base 251 and sides 25<SP>11</SP> which are constructed with prisms as defined on the inner sides. The light sources 29 are each arranged outside the dihedron formed by planes parallel to the sources and inclined to one another at the dihedral angle specified. The top may be closed by a reflecting plate 30. In another form, a frusto-conical screen having internal prisms and closed at the top by a reflecting plate surrounds an incandescent lamp. Forms designed for wall mounting, open at the top and for recessing on a ceiling are also described. Plates with sets of parallel planes in different directions so that the surface carries a system of upstanding pyramids or cones, may also be used.
Patent GB-845591-A (GB)
Title: Tubing hanger apparatus for oil and like wells
IPC: E21B33/047
Filed: 1959-05-22
Abstract: 845,591. Oilwells. OIL CENTER TOOL CO. May 22, 1959 [Aug. 12, 1958], No. 17471/59. Class 85. A well tubing suspension apparatus comprises a ring 22 seated within the tubing head 10, and one or more, as shown two tubular hangers 44, secured to the ends of the tubing strings 64, the ring 22 having a non-circular bore 40 for each hanger, and the hanger having a flange 52 of corresponding non-circular configuration, so that the flange 52 can pass through the bore when aligned .therewith, but can be turned out of alignment to rest on the ring. In use, the string 64 is run into the well and connected, at its lower end, to a packer, the flange 52 being then beneath the ring 22. The hanger 44 is now raised to stretch the string, the tension in the string being held by turning the flange 52, which is now above the ring 22, so that it may seat upon the ring. The ring 22 rests upon a tapered seat 24 in the head 10 and is located by a screw engaging a vertical groove in the side of the ring, and is held by a diametrically opposed grub screw. The bores 40 are flattened ellipses in plan, the major axes of the ellipses being displaced towards the axis of the well casing relatively to the axes of the hangers 44 to separate the two strings as much as possible. The tops of the bores 40 are recessed, the recesses being of the same configuration as the bores and flanges, but being formed by arranging the major axis of the recess at an angle, e.g., 20 degrees, to the major axis of the bore, thus producing steps 48, 50 on which the flange 52 may rest when turned out of alignment with the bore. The hanger 44 is grooved at 53 to enable the hanger to be moved laterally to align the flange 52 with the bore. The apparatus is sealed by a rubber or like body 84 squeezed between members 82, 86 apertured to fit over both hangers 44 and bolted together. The upper member 86 has a bevelled edge 106 which is wedged downwardly by the conical ends of screws 100.
Patent GB-834477-A (GB)
Title: Improved process for the production of solid polymer and polymer so-produced
IPC: C08F10/00
Filed: 1957-06-03
Abstract: At least one olefin is polymerized to a nontacky normally solid polymer by contacting the olefin with a polymerizing catalyst in the presence of a liquid diluent, the catalyst in solid particulate form being suspended in an upward flowing stream of the olefin, the olefin being admixed with a diluent hydrocarbon which is liquid and inert, the catalyst being maintained in suspension in the stream to produce particulate solid, non-tacky polymer, and the linear velocity of the stream being adjusted so as to cause polymer-containing particles of a predetermined size to settle against the stream.  Relatively low molecular weight polymers may be extracted from the product by selective extraction with a solvent.  Ethylene is the specified olefin, paraffins and naphthenes the liquid diluents, while the preferred catalyst is chromium oxide associated with at least one of the oxides silica, alumina, zirconia, and thoria, at least some of the chromium being in the hexavalent state.  Apparatus for carrying out the process is described.
Patent GB-1112019-A (GB)
Title: Magneto-optical device
Inventor: PEARSON RONALD FERGUSON
IPC: H01S3/11
Filed: 1966-04-22
Abstract: 1,112,019. Light deflectors. MULLARD Ltd. 14 April, 1967 [22 April, 1986], No. 17757/86. Heading H4F. Apparatus for deflecting a beam of plane polarized infra-red radiation into one of two directions comprises a Faraday-rotation device in the form of a single-crystal block of yttriumiron-garnet (YIG) and a birefringent prism, a magnetic field being applied to the YIG block in a direction parallel to the beam path to cause the plane of polarization of the beam to be rotated through + 45 or - 45 degrees depending on the direction of the magnetic field and according to the direction of rotation the beam is deflected into one of two directions by means of the birefringent prism. As shown, Fig. 4, an infra-red beam from a laser X is plane polarized by polarizer R and passed through a YIG block G of such length as to give a 45- degree rotation when magnetized by a coil E, the magnetic circuit being completed by two yoke members Y of ferrite material, e g polycrystalline YIG material. Prism K made from a birefringent crystal of rutile (TiO 2 ) with its refracting edge parallel to the optic axis is disposed with its optic axis perpendicular to the beam path so as to deflect the beam into one of two positions on screen S depending on the direction of polarization of the light beam, i.e. the direction of the magnetic field. The YIG block G (a polarization switch) and prism K constitute a binary deflection unit and a succession of N such units form a one-dimension digital deflection bank with 2<SP>N</SP> displacement positions if the prism angles are so arranged that each successive prism gives twice the deviation. With a second bank, the birefringent prisms being orthogonal to the prism of the first bank a two dimensional array is formed. Since the length of the beam path in the YIG is only approximately 1À8 mm. for 45 degrees rotation with an infra-red beam of wavelength 1À15 microns the design of the magnetic yoke is difficult and thus is not used. Instead the disc D, Fig 8, of YIG is held coaxially within a coil E which produces the magnetic field. The disc D is magnetically saturated by means not shown, but to reduce the high value of saturation magnetization of YIG a gallium-YIG crystal (Y 3 Fe 3.85 Ga 1.15 O 12 ) is used. The disc is cut with its easy direction [111] normal to the plane of the disc and is coated with an anti-reflection coating F and an aluminized mirror coating C. In order to produce a rectangular array of positions to which the beam is deflected 45 degrees polarization rotators are provided between the polarization switches so that the net effect of beam rotation is from zero to 90 degrees rather than from + 45 to - 45 degrees. The rotators may comprise a disc D or YIG, Fig 9, coated with an aluminized mirror coating C and an antireflecting coating F, fixed to a permanent magnet M magnetized in the direction H. A two-dimensional rectangular deflector utilizing the switches J and rotators L, Figs. 8 and 9, is described with reference to Fig. 10, not shown.
Patent GB-846488-A (GB)
Title: A mechanical current converter
IPC: H02M1/20
Filed: 1957-06-05
Abstract: 846,488. Interrupters; electromagnetic interrupters. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. June 5, 1957 [June 19, 1956], No. 17888/57. Class 38 (5). A mechanical current converter has contact elements each comprising two stationary contacts contacting with a contact bridge which is biased towards the stationary contacts by a leaf spring. As shown, the spring 8 is forked and riveted to heat-insulating pressure members 10, 10<SP>1</SP> which bear on the contact bridge 1 to bias it toward fixed contacts (not shown). An eccentrically driven band 7 reciprocates a tappet head 3 carrying an insulating tappet 2 which lifts the bridge 1 from the fixed contacts. The head 3 is secured to a stack which includes the fixed end of the spring 8 and leaf springs 4, 5 allowing movement relative to a fixed part 6. The spring 8 is thicker at the fixed end and is ground to a radius r to avoid any weakening due to abrupt changes in thickness. The contact surface may be divided along the line A-A and the members 10, 10<SP>1</SP> may be made of electrically conductive material if the circuit is to be tapped at the contact bridge. Alternatively the head 3 may be reciprocated by electromagnetic means.
Patent GB-546621-A (GB)
Title: Improvements in or relating to variable-pitch airscrews
IPC: B64C11/06
Filed: 1940-12-19
Abstract: 546,621. Screw propellers. FAIRHURST, L. G. Dec. 19, 1940, No. 17893. [Class 114] In a blade-mounting for a variable-pitch airscrew, the blade-root 10 is formed with conical and cylindrical portions 12, 11 engaging corresponding portions of a two-part sleeve 13 which is clamped to the portion 11, the arrangement enabling the sleeve to carry the centrifugal and bending loads on the blade. The portion 12 may be formed by an upsetting operation. Preferably, the sleeve is formed with a longitudinal slit 14 having serrations 21, and is bound at the top by a divided ring 18 provided with a tightening-bolt 19, and at the bottom by a flanged ring 16. The surfaces 12, 15 are held in tight engagement by a ring 22 which is screwed into the ring 16. The ring 16 may be provided with a pin 25 in connection with a pitch-changing motor. The pitch can be initially adjusted, without disturbing the motor-connections, by slackening the ring 18 and turning the blade.
Patent GB-1285132-A (GB)
Title: Mixing chamber and storage container for compressed air operated surface blasting machines
IPC: B24C7/00
Filed: 1970-04-15
Abstract: 1285132 Blasting HEINRICH SCHLICK KG 15 April 1970 [16 April 1969] 17937/70 Heading B3D A mixing chamber for a blasting machine comprises a housing 1 provided with an inlet aperture for compressed air, an outlet for a mixture of compressed air and surface blasting agent, and a flange for connection to a pressure storage container 9, a partition being provided in an extended conical section of the flange and having a triangular passage aperture 2 for the blasting agent 10 and a circular opening for a riser pipe 6. The aperture 2 is opened or closed by a valve 4 rotated by a spindle 5 mounted in a graphite bearing in the housing. The upper end of the riser pipe has a conical closure member 12 and a cup 7 for hermetically sealing the container 9.
Patent GB-370746-A (GB)
Title: Device for stopping motor cars in the event of the brake failing or other defects
IPC: B60T1/14
Filed: 1931-06-22
Abstract: 370,746. Vehicle brakes. SOUSEDIK, J., Ivanovice na HanÚ, Czecho-Slovakia. June 22, 1931, No. 18039. [Class 103 (i).] An emergency brake for motor cars comprises on each side of the vehicle and in front of or between the wheels, a skid 4 rotatably mounted upon a shaft 2 and normally held in the raised position by the engagement of the end of a flat spring 5 with one of the supports 10 of the skid. Upon depressing a pedal the skid is disengaged from this spring by a striker 6 and is then rotated downwardly to the position shown by a spiral spring 7 on the shaft 2, to engage the track and lift the vehicle, the part 4<1> engaging a stop 9 on the chassis. The device may be arranged to stop forward or rearward motion.
Patent GB-1573484-A (GB)
Title: Method and apparatus for ultrafiltration
IPC: B01D65/08
Filed: 1978-05-05
Abstract: A method and device for separating liquid mixtures by ultrafiltration wherein prior to introducing the mixture into the ultrafilter a gas is added to the said mixture. The addition occurs at a pressure higher than the ultrafiltration pressure and the mixture of liquid and gas is allowed to expand down to the said ultrafiltration pressure prior to be introduced into the ultrafilter.
Patent GB-1502448-A (GB)
Title: Static capacitance type sensor
IPC: G01N27/22
Filed: 1975-04-30
Abstract: 1502448 Measuring yarn thickness ASAHI KASEI KOGYO KK 30 April 1975 [30 April 1974] 18055/75 Heading GIN Apparatus for sensing variations in yarn thickness comprises a capacitor sensor 31, between the electrodes of which, in use, a yarn is passed which capacitor is connected as input capacitor of a voltage doubler circuit with diodes 46, 47. In an alternative embodiment, Fig. 4, a similar sensor is connected symmetrically with the first but having no yarn passing through the capacitor 70 whereby with no yarn passing through capacitor 31 the output from terminal 137 is null but with yarn passing through capacitor 31 the output voltage corresponds to the yarn thickness.
Patent GB-1223435-A (GB)
Title: Spur gear differential with automatic self-locking arrangement
IPC: F16H48/20
Filed: 1968-04-17
Abstract: 1,223,435. Differential gear. JAKMUFEJLESZTESI INTEZET. 17 April, 1968 [26 April, 1967], No. 18064/68. Heading F2D. An automotive limited-slip spur-gear differential comprises interengaging planet pinions 7a, 7 supported on a carrier 5, fast on a halfshaft 2b, and respectively meshing a sun gear 4, fast on a half-shaft 2a, and an internal ring gear 8 freely floating in the differential casing la, 1b to which an input driving wheel 3 is secured, differential rotation of the half-shafts 2a, 2b being resisted by clutch packs 12a, 12b mounted one each side of the ring gear 8, in splined engagement with the differential casing and hubs 10a, 10b, fast on the sun 4 and carrier 5, and engaged by axial pressure developed at interengaging cam surfaces 9b, 13b (Fig. 3a, not shown), formed on the side faces of the ring gear 8 and adjacent clutch plates 12a, 12b.
Patent GB-545710-A (GB)
Title: An improved method and means for drying vegetables, especially potatoes or other food products
IPC: F26B3/00
Filed: 1940-12-24
Abstract: 545,710. Drying vegetables &c. TEMPLETON, R. A. S., and FARMERS MARKETING & SUPPLY CO., Ltd. Dec. 24, 1940. Nos. 18077/40 and 10296/41. [Class 34 (ii)] Sliced potatoes or other vegetables or foodstuff having a high water content are subjected to a preliminary treatment in a drier such as a rotary drum a in which the material is agitated as drying proceeds, and are further dried without agitation in a chamber 1 through which the material is conveyed on bands i. Pipes g, h conduct heated air to and from the rotary drum. Fans p inject heated air into the chamber 1 and a further fan r exhaust the moist air from the chamber.
Patent GB-682763-A (GB)
Title: Electrical speed control system
IPC: H02P23/00
Filed: 1948-07-06
Abstract: 682,763. Gas turbine plant. OFFNER, F. F. July 6, 1948 [Aug. 27, 1947], No. 18147/48. Drawings to Specification. Class 110(iii) [Also in Group XXXV. The fuel supply to a jet engine is automatically controlled by an electrical system (see Group XXXV) so that below a predetermined speed acceleration is maintained at a value which increases exponentially with speed whereas above the predetermined speed, speed is maintained constant. Control of the fuel supply is overridden by a further electrical control to prevent tail pipe temperature exceeding a predetermined maximum.
Patent GB-887982-A (GB)
Title: Method and apparatus for supplying printing machines with liquid media
IPC: B41F31/00
Filed: 1959-05-28
Abstract: 887,982. Inking-apparatus. MULLER, W., and MULLER, H. E. May 28, 1959 [Sept. 26, 1958], No. 18193/59. Class 100(2) In a method for supplying printing machinery, especially gravure printing machinery, with ink, blending agents, solvents and/or other supply components, each of the liquid components is withdrawn from a circulating system returning the liquid concerned to the respective storage vessel through a pressure relief valve, and said components are fed at a uniform supply pressure to the ink box of the printing machine through valve means comprising glandless cut-off members, of which the effective cross-sectional flow area can be adjusted. Ink, a colour-intensityregulating liquid, and a solvent for thinning the ink, are circulated by pumps 16, Fig. 2, from tanks 13, 14, 15. Part of each liquid passes through one of pipes 17 and cut-off members A<SP>1</SP> into the ink-box 18 of a gravure printing machine 19, while part returns to its tank through one of pressure relief valves 13a, 14a, 15a, which control the pressure of liquid to the cut-off members. Each cut-off member comprises a housing 1, Fig. 1, through which liquid flows from E to A to an extent allowed by the lowering of a piston 2 against a spring 3. The piston is lowered by a hand lever 7, or by remote control through a pneumatic cylinder 12 or an electromagnet, engaging a plunger 5. The stroke of the piston is controlled by rotating a bearing nut 9, having a scale, to adjust the spacing between a collar 9a and the end of the housing. The part of the housing where the liquid is scaled from the outside by a spring bellows 4 connected to the plunger 5 and to a shoulder 1b of the housing, excessive compression being prevented by a sleeve 6. If all the cut-off members are opened simultaneously for a given time, the liquids are supplied to the box 18 in desired amounts according to the pre-setting of the nuts 9.
Patent GB-677111-A (GB)
Title: A device for severing material in sheet form into lengths
IPC: A47L13/04
Filed: 1950-07-20
Abstract: 677,111. Roll holders. ARMELIN, E. R. July 20, 1950, No. 18194/50. Class 18 [Also in Group VIII] A device for delivering lengths of steel wool or other material comprises a casing a within which is supported a roll of the material c, the material being drawn through a guide shoot f by a manually operated roller d which feeds the material over a stationary cutter blade j and out through a slot in the casing. The material is secured by a'movable blade h operated by a hand lever g, both of which are pivoted to an upright extension of the blade j. A spring serves to return the blade hand lever g after they have been operated.
Patent GB-849382-A (GB)
Title: Improvements in or relating to parking meters
Inventor: FENNELL CYRIL HENRY
IPC: G07F17/24
Filed: 1957-06-07
Abstract: 849,382. Coin-freed parking meters. PARKING METERS (EUROPE) Ltd. July 3, 1958 [June 7, 1957], No. 18199/57. Drawings to Specification. Class 27 The parking meter of Specification 849,381 is described and the claims relate mainly to the full stroke pawl 92. Specifications 849,383 and 849,384 also are referred to.
Patent GB-220301-A (GB)
Title: Improved manufacture of highly refractory bodies
IPC: H01K3/02
Filed: 1924-07-31
Abstract: 220,301. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Aug. 9,1923, [Convention date]. Wire. - Refractory metals such as tungsten, molybdenum, or tantalum, particularly when used for making filaments for electric lamps &c., are improved by the addition of 0.1-3 per cent of hafnium oxide, which retards the recrystallization of the metal. The hafnium oxide, or a compound yielding the same at a high temperature, is added to the metal or metallic compound from which the filament is manufactured in the known manner. Specifications 211,825 and 216,840, [both in Class 39 (i), Electric lamps, Arc &c.], are referred to.
Patent GB-380842-A (GB)
Title: Directional aerial system
IPC: G01S3/12
Filed: 1931-06-25
Abstract: 380,842. Discharge wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., Columbia House, Aldwych, London.-(Assignees of Materiel Telephonique Soc. Anon. ; 46, Quai de Boulogne, Boulogne, France.) June 25, 1931, No. 18364. Convention date, Nov. 21, 1930. [Class 40 (iv).] In a directive combination comprising an open aerial and a frame aerial, the tuning controls are ganged together so as to preserve a. constant cardioid curve over a wide range of equal frequencies, and thus enable bearings to be taken on a number of different transmitting stations without entailing elaborate readjustments. The tuned circuit of the open aerial A comprises a fixed inductance LA and a bank of fixed condensers C of different values, connected in circuit by a switch S, which is mechanically linked to the tuning condenser CF of the loop aerial F. The two aerials are adjustably coupled through inductances LF, LF<1>, LA, the combined output being fed to a direction finder DF. A resistance R prevents rapid variations in phase near the critical tuning points. The bank,of condensers C may be replaced by a tapped inductance coil or a variable condenser. Re-radiation from one aerial to the other, tending to mask the critical angle, may be eliminated by providing a reverse coupling coil between the two aerial circuits.
Patent GB-357214-A (GB)
Title: Improvements in apparatus for vibrating screens, shaking tables, and other apparatus
IPC: B07B1/42
Filed: 1930-06-16
Abstract: 357,214. Sifting and separating apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and SHERWEN, J. W., of Fraser & Chalmers Engineering Works, Erith, Kent. June 16, 1930, No. 18378. [Class 117.] Vibrating screens, concentrating tables, conveyers, &c. are driven by a pneumatic motor to which pressure is supplied intermittently, and the time during which the control valves are open or closed is dependent on the load. As shown in Figs. 1 and 4 a screen 1 is supported on inclined hickory &c. springs 3 on a base 7 which is slung from overhead supports by adjustable suspension rods 8, 9. The screen is connected by bars 5, a cross-member 6, bars 14 and a crosshead 13 to the piston 12 of a pneumatic motor, the cylinder 11 of which is secured to the base 7. A leaf-spring supports the free ends of the bars 5 and a buffer spring 19, adjustable by a hand-wheel 18 is interposed between the bar 6 and the back of the cylinder. The inlet port 23 and exhaust port 25 are controlled by the piston which acts as the valve and is provided with the passage 24. The position of the piston at the middle of its stroke relatively to the inlet port is varied by the flexure of the springs 3 under varying load and the opening and closing of the valves consequently varied. Fig. 5 shows a controlling device which depends on the frequency of oscillation. A dashpot 26 is mounted on the screen and carries a spring-biased piston 27 with projecting rods 28. At the end of one movement the piston is set by contact with a fixed abutment 32, and on the return movement actuates an arm 33 to close a valve supplying pressure to the motor.
Patent GB-737665-A (GB)
Title: Improvements in air or gas cleaning and filtration installations
Inventor: MANSON ALBERT LEVY
IPC: B01D46/30
Filed: 1952-07-21
Abstract: <PICT:0737665/III/1> A gas-purifying apparatus comprises superposed layers 7, 8, 9, 11, 12 of charcoal separated by springs 18 and corrugated mesh 19 to provide spaces 16, 10, 17, 13 and mounted in a two-part casing formed by flanged castings A, B, C, D, E secured by bolts 1 and having an inlet 5 leading to a vertical manifold 14, in one part of the casing and an outlet 6 leading from a vertical manifold 15 in the other part of the casing; inlet gas from manifold 14 and spaces 10, 13 traversing the layers 8, 9, 11, 12 to gain access to spaces 16, 17, the manifold 15 and outlet 6.  Centrally apertured baffle plates 22, 23 equalize the distribution of inlet and outlet gas, and the charcoal is retained by perforated plates 20. Specification 727,975, [Group XXVIII], is referred to.