baber/WOPTO huggingface dataset:
Patent GB-1185802-A (GB)
Title: Optical Display Means for an All-Weather Landing System of an Aircraft
IPC: G02B27/01
Filed: 1968-03-14
Abstract: 1,185,802. Cathode-ray tube apparatus. BENDIX CORP. 14 March, 1968 [21 March, 1967], No. 12370/68. Heading H4T. [Also in Division G2] An aircraft landing system has a half silvered mirror 109 disposed in the line of sight of a pilot's eyes 105, 105A so that a runway image formed on the screens 103, 103A of the cathoderay tubes 102, 102A is superimposed upon the runway viewed direct, wherein light filters 111, 252, 255 are interposed in the beam paths so as to vary the brightness ratio of the beam received from the cathode-ray tube screens with that of the prevailing ambient light. Filter 111 is slidably mounted in a frame between an operative position and an inoperative position, adjustment being effected by a lever which rotates a drum around which a cable is wound, the cable being disposed around the frame and attached to the filter. Either one or both of filters 252, 255 may be positioned in the light path, the filters being mounted to permit rotation about a horizontal edge. The brightness ratio is also controlled by light sensors 400, 400A detecting the brightness of the cathoderay tubes and by sensor 407 detecting the brightness of the ambient light. The image of the cathode rays is seen at infinity by viewing through field lenses 106, front surface mirrors 107, and collimating lens system 108. A combining mirror may replace one of the mirrors 107 to enable reticle information (Fig. 3, not shown).
Patent GB-999125-A (GB)
Title: A process for preparing organosilicon polymers
IPC: C08G77/08
Filed: 1964-03-24
Abstract: Organosilicon polymers are made by contacting, and preferably heating, (1) (a) a cyclictrisiloxane of the formula (R2SiO)3, wherein each R is a monovalent hydrocarbon (saturated or unsaturated), halohydrocarbon or cyanoalkyl radical, or (b) a cyclic silethylenesiloxane of the formula <FORM:0999125/C3/1> wherein each X is a monovalent hydrocarbon or halohydrocarbon (free from aliphatic unsaturation) or cyanoalkyl radical, with (2) a compound of the formula <FORM:0999125/C3/2> wherein R1 is a halogen atom or a monovalent hydrocarbon, halohydrocarbon or hydrocarbonoxy radical of 1 to 10 C atoms, M is alkali metal atom or a tetraorganonitrogen or tetraorganophosphorus radical, m is 0, 1, 2 or 3, n is 1, 2 or 3 and m+n is 1, 2, 3 or 4.  Component (1) can also be a mixture of 2 or more components (a), 2 or more components (b) or a mixture of components (a) and (b).  The process may be effected in an organic solvent, and moisture should desirably be excluded or even removed. The catalysts, which are not siloxane bond rearrangement catalysts, need not be removed, though they may be removed as by washing with water.  In a typical Example (1), 3,3,3-trifluoropropylmethylsiloxane cyclic trimer and lithium phenoxide were mixed together and heated in a sealed bottle for 17 hours at 177 DEG  C. to yield a high polymer. Specifications 832,489 and 911,818 are referred to.
Patent GB-1420524-A (GB)
Title: Structural element for the manufacture of floors or ceilings
IPC: E04B5/36
Filed: 1973-03-15
Abstract: 1420524 Concrete floors, ceilings T KONCZ 15 March 1973 [21 March 1972] 12506/73 Heading E1W A concrete floor and ceiling is produced by using a single permanent shutter 1 for a room in a building, the shutter being of concrete, which may be prestressed, having upstanding parallel ribs 2 and being covered in concrete 4. The upper surface, between the ribs, may be separated or provided with ledges (Fig. 3, not shown). The ribs may be rectangular or trapezoidal, and the concrete layer 4 may finish flush with the tops of the ribs, or higher.
Patent GB-821118-A (GB)
Title: A method of producing propylene polymers
IPC: C08F10/00
Filed: 1957-04-17
Abstract: Propylene is polymerized at a constant pressure and at a temperature between 20 DEG  and 90 DEG  C. in the presence of a catalyst dissolved in a solvent, e.g. hydrocumol, the catalyst comprising an organo-metallic compound such as an aluminium alkyl, and a compound of subgroups IVa, Va, or VIa of the Periodic System, e.g. titanium or zirconium tetrachloride.
Patent GB-977753-A (GB)
Title: Improvements in piston rings and piston-and-ring assemblies
Inventor: CROSS ROLAND CLAUDE
IPC: F16J9/20
Filed: 1963-03-29
Abstract: 977,753. Piston rings. CROSS MANUFACTURING CO. (1938) Ltd. Dec. 2, 1963 [March 29, 1963], No. 12517/63. Heading F2T. A piston ring comprises an outer part 3 of substantially triangular section and an inner part 5 having an arcuate section at its radially outer face which fits in an arcuate section groove 4 in the outer part 3. In the embodiment shown in Fig. 2, in which the ring acts as a bearing ring, the part 5 is of circular cross-section and engages a semi-circular section groove 6 in the piston 1 and the part 3 is located in a groove 10 having sides converging from the piston periphery 9 to the groove 6. In the modification shown in Fig. 3, the ring part 5 has a part of rectangular section 5a and is housed in a groove of corresponding section in the piston so that the part 3 can be compressed into the groove 10. The piston ring may be either a plane ring with both parts 3 and 5 gapped and sprung together or a helical ring in which case the part 5 may be screwed into the part 3.
Patent GB-1534109-A (GB)
Title: Automatic control device for bending machines
IPC: B21D11/12
Filed: 1977-03-25
Abstract: In addition to a link-type preselection device (35-38), the automatic control system comprises a limb-length selection device (32). By preselection of the link type, a basic programme assigned to each link type and comprising the direction and magnitude of the successive bending angles for each link is defined and the limb-length selection device permits free selection of the lengths of the successive limbs of the links. It is thereby possible to preset all the bending operations required for the production of a link, as regards the length of the individual limbs of the links, the magnitude of the bending angle and the separation of the finished link from the bar or rod material. The categorisation of the most frequently required concrete reinforcement links into just a few link types with a particular sequence of bending locations makes it possible to produce these more frequently required link types more efficiently. <IMAGE>
Patent GB-289885-A (GB)
Title: Method of purifying gases from sulphuretted hydrogen by decomposing the latter into hydrogen and sulphur
IPC: C10K1/12
Filed: 1928-04-30
Abstract: 289,885. Fischer, F. May 5, 1927, [Convention date]. Materials for purifying. - In purifying gases containing hydrogen sulphide by an alkaline solution of potassium ferricyanide with the formation of sulphur and potassium ferrocyanide, the solution freed from sulphur is revivified by electro. lysis and the hydrogen liberated at the cathode is added to the purified gas. Alkali formed by the electrolytic action is mixed with the revivi. fied ferricyanide.
Patent GB-572731-A (GB)
Title: Improvements in electrical calculators
IPC: G06G7/163
Filed: 1941-10-01
Abstract: 572,731. Electric control systems. GENERAL ELECTRIC CO., Ltd., SNOW, P. E. ACKLAND-, FARREN, I. L., and RIVLIN, R. S. Oct. 1, 1941, No. 12707. [Class 40 (i)] [Also in Group XIX] An electrical apparatus for obtaining the quotient of two given quantities a, b comprises means for applying an input to terminals (A) proportional to a, means for varying the transmission ratio between the terminals (A) and other terminals (C) in such manner that the output at terminals (C) is constant whatever the value of a, means for applying to terminals (B) an input proportional to b, and means for causing the transmission ratio between terminals (B) and other terminals (D) to vary concurrently with and proportional to the first transmission ratio thereby obtaining an output at terminals (D) proportional to the ratio b/a, the transfer paths between the terminals A and C and B and D, comprising thermionic valve amplifiers. In the embodiment shown 1 and 2 are similar valve amplifiers, 3 and 4 are another pair of similar valve amplifiers. Amplifiers 1 and 3, and 2 and 4, are connected by leads 5 and 6. The output of amplifier 1 feeds a rectifier 7, the smoothed output of which is applied as a bias to a valve in each of the four amplifiers. The biases are adjusted in such manner that whatever the value a assumes, within some determinate range, the output of amplifier 3 has a constant value k. Means to this end have been used in automatic volume control apparatus. As the gain in the circuit of the amplifiers 2 and 4 is the same as that in the circuit of amplifiers 1 and 3 the output at amplifier 4 is b equal to k-, a and b being alternating voltages a applied to the amplifiers 1 and 2. Instead of two pairs of amplifiers one pair, viz. 1 and 3, may be employed, voltages a and b being applied to the input terminals at different frequencies fa and fb. The rectifier 7 is then fed at the frequency fa by means of a filter and the output of amplifier 3 is divided into two parts by filters. The part with the frequency fa is observed and the biases adjusted so that this part is independent of the value a. In another modification (not shown) two similar potentiometers with sliders ganged mechanically may be employed. The output of the first potentiometer is kept constant as indicated by an appropriate instrument either controlled manually or by known automatic means ; the output of the second potentiometer will give the desired ratio of the two inputs.
Patent GB-1160672-A (GB)
Title: Improvements relating to Proximity Detectors
Inventor: STEVENSON STUART WILLIAM
IPC: H03K17/95
Filed: 1966-03-23
Abstract: 1,160,672. Proximity detectors. DONOVAN ELECTRICAL CO. Ltd. March 23, 1967 [March 23, 1966], No. 12708/66. Heading G1N. The invention relates to improvements in inductive proximity detectors: - (i) when the detector head is connected to the amplifier by a long cable (having a capacitative characteristic impedance) the inductance of the detector head is made sufficiently low to avoid approaching resonance under working conditions thus avoiding instability (i.e. an inductive impedance is always presented to the amplifier). (ii) the coils may be encapsulated and housed in a metal pot having a "window" in the detecting direction, to provide mechanical protection and electrical screening from stray fields cleaning means such as a liquid jet may provided to remove particles adhering to the head (iii) temperature compensation may be provided by non-inductive (bifilar) coils located near each of the two coils and connected in series with the other of the two coils. (iv) the amplifier may be tuned to the working frequency e.g. 50Œ5 kcs to minimize external interference picked up by the coils, and may also include a low pass filter.
Patent GB-327429-A (GB)
Title: Improvements in and relating to shot gun cartridge cases and cartridges
IPC: F42B5/26
Filed: 1928-12-28
Abstract: 327,429. Griffiths, F. E., Shufflebotham, J. S., and Imperial Chemical Industries, Ltd., Dec. 28, 1928. Divided application. Waterproofing; proofing compositions.-Paper tubes for shot gun cases or cartridges are protected against damp by a coating of a mixture of cellulose esters or ethers, or mixed esters and ethers, resin and drying oil. Suitable compositions are described containing nitrocellulose, ester gum, blown linseed oil, dibutyl phthalate, toluol, industrial spirit and butyl acetate. Cases may be coated with a composition of this type and then with a second coating of a similar composition without the resin and drying oil. Such a composition is described containing nitrocellulose, methyl ethyl ketone, toluol, industrial spirit and butyl acetate. The noses of the cases thus coated are dipped in a lubricant, such as vaseline dissolved in petrol, to allow of their being turned over without damaging the coating.
Patent GB-887669-A (GB)
Title: Polyvinyl chloride compositions
Inventor: BRIMLEY KENNETH JOHN
IPC: C08L83/04
Filed: 1959-04-15
Abstract: A composition suitable for the production of articles by extrusion or calendering comprises a vinyl chloride polymer containing up to 5% thereof of a liquid organopolysiloxane of molecular weight 1,500 to 1,000,000.  The vinyl chloride polymer may be a copolymer with vinyl acetate, vinylidene chloride, acrylic acid, methacrylic acid, maleic acid or fumaric acid while the siloxane may be a methyl-, dimethyl-or methylethyl siloxane, preferably in amount from 0,5 to 1,5% of the polymer.  The composition may also contain plasticizers, fillers, pigments, heat and light stabilizers; specified are dialkyl phthalate, chlorinated paraffin wax, basic lead carbonate, calcium stearate, calcined china clay and ground dolomite.
Patent GB-201272-A (GB)
Title: Improvements in and relating to the conversion of electric currents
IPC: H03K3/78
Filed: 1922-05-06
Abstract: 201,272. Hart, M. D. May 6, 1922. Vacuum or low-pressure apparatus, arrangements of.-Intermittent electric impulses of determinable frequency are obtained by connecting a neon or like rare-gas glow-lamp a to a source b of continuous or low-frequency alternating current in series with a very high chimic resistance c, or with an inductance which offers a very high impedance to the passage of periodic currents, the resistance or inductance being preferably shunted by a condenser f. The frequency of the impulses depends on the values of the resistance, capacity and supply voltage and the arrangement may be used as an interrupter cr as a source of acoustic or high-frequency oscillations. By connecting a second lamp, arranged to oscillate at a lower frequency, in series or in parallel with the lamp a, impulses of periodically-varying frequency may be obtained.
Patent GB-217400-A (GB)
Title: Improvements in and relating to yarn doubling and the like machines
IPC: D01H1/241
Filed: 1923-05-15
Abstract: 217,400. Stubbs, Ltd., J., and Stubbs, J. H. May 15, 1923. Spindle-driving apparatus.-The tension pulleys 10 of the spindledriving bands of yarn doubling and like machines are mounted in carriers 13, which are mounted on vertical pivots 17 in bearers 16 swivelling on a rod 15, and are provided with extensions 24 adapted to be engaged by projections from collars 22 on a longitudinally movable rod 21, whereby all the pulleys may be simultaneously adjusted in accordance with the direction of the drive. The rod 21 may be moved by a rack and pinion or worm-gearing, or it may be screwed at its end and engaged by a rotary bush 26 operated by a handle 30, or the collars 22 and the rod 21 may be screwed and the latter rotated. Hooks 34 are provided on the carriers to catch and hold the tapes if they should be displaced. Longitudinal movement of the bearers is prevented by collars 19 fast on the shaft 15.
Patent GB-244991-A (GB)
Title: Improved appliances for playing a table game
IPC: A63D15/00
Filed: 1925-05-19
Abstract: 244,991. Reid, C. A. May 19, 1925. Table games. - Appliances for playing a game comprise a board 1 surrounded by a rim 2 and provided on its surface with hoops 4, pegs 6 and holes 21. Balls are struck over the board by means of mallets, the players endeavouring to follow the course shown by the dotted line which starts at a tee 3 and finishes at a slope 19 leading to a box 20. The holes 21 form hazards in connection with which supplementary tees 23 are provided.
Patent GB-131355-A (GB)
IPC: F01L1/10
Abstract: 131,355. Ricardo, H. R. May 10, 1918. Valve-gear.-The inlet and exhaust valves of adjacent cylinders A, A' of a high-speed engine are actuated in pairs by rolling levers driven from eccentrics and engaging bell-cranks which operate the valves. As shown in Fig. 1, the end G<2> of a lever G<1> driven from an eccentric engages alternately the ends J<2>, H<2> of bell-cranes J<1>. H<1> which actuate the exhaust valves. A similar rolling lever engages a pair of bell-cranks associated with the inlet valves. If inlet valves of the type described. in Specification 125,659 are used, the valve rods and levers may be formed so as to be interchangeable.
Patent GB-1124631-A (GB)
Title: Improvements in and relating to continuous filtration plant
Inventor: WARREN ANTHONY VINCENT
IPC: B01D33/06
Filed: 1965-03-29
Abstract: 1,124,631. Filter. DAVEY PAXMAN & CO., Ltd. 14 March, 1966 [29 March, 1965], No. 13140/65. Heading B1D. A continuous sewage filtration plant comprises a rotary screen filter 1 and a sludge distributor 7 which is inclined to the horizontal over the main part of its length and opens substantially tangentially onto the inner surface of the filter screen at a point adjacent the horizontal diameter of the filter. The filter 1 comprises screen 2 secured in grooves 9 by ropes 8 and straps 10. One or more filters 1 may be used in parallel. Water sprayed from nozzles 11 and 13 may be used to intermittently clean distributor 7 and screen 2. The sludge may be discharged from distributor 7 onto the screen 2 at a velocity substantially equal to that of the screen.
Patent GB-1001986-A (GB)
Title: Devices for the interconversion of energy
IPC: G01K7/38
Filed: 1963-04-03
Abstract: 1,001,986. Measuring electrically. E.I. DU PONT DE NEMOURS & CO. April 3, 1963 [April 3, 1962], No. 13171/63. Addition to 981,219. Heading G1N. [Also in Divisions HIT and H3T] The core 16 (Fig. 1) of a coil in the tank circuit of a transistor oscillator 10 is made of materials sensitive to temperature, pressure and magnetic field strength, whereby the oscillations frequency is indicative of the values of these parameters. The A.C. signal is amplified by transistor 30 and transmitters from antenna 39 to a receiver where it is mixed with the output of a local oscillator to determine the change in frequency, by audio means, or by a frequency meter, or by a CRO display. Suitable core materials are described in Specifications 927,312, 930,650 and 932,678 also are referred to.
Patent GB-1356913-A (GB)
Title: Process for the gravity separation of minerals
IPC: B03B1/04
Filed: 1972-03-21
Abstract: 1356913 Sink-float separation ZDRUZENO PREDUZECE "MAGNOHROM" ORGANIZACIJA KRALJEVO RUDNIKA MAGNEZITA BELA STENA and BASSE SAMBRE SA 21 March 1972 [22 March 1971] 13234/72 Heading B2H A process for separating a finely divided mineral into lighter and heavier fractions comprises contacting the mineral with a surface active agent having a hydrocarbon chain of at least 8 carbon atoms, feeding the mineral into a fluid medium having a density between that of the said lighter and heavier fractions, and separating independently from the medium that fraction which sinks and that fraction which floats. Suitable surface active agents include: C n H 2n+1 O(CH 2 CH 2 O) m -H, where n is an integer in the range 8 to 20, and m is an integer in the range 4 to 50; and petroleum sulphonates. The said fluid medium may consist of bromoform, tetrabromoethane or an aqueous suspension of finely divided magnetite or ferrosilicon. The mineral may be treated with an aqueous solution of the surface active agent prior to being fed to the said fluid meduim. Minerals suitable for treatment by the process include magnesite, dolomite, iron ore, diamonds, antimony ores, chromite and coal.
Patent GB-287351-A (GB)
Title: Improvements in or relating to strainers for liquids
IPC: B01D35/02
Filed: 1927-05-17
Abstract: 287,351. Hales, A. May 17, 1927. Filters and strainers, applications of.-A tap filter comprises one or more sheets d of cotton, wire gauze, &c. fixed by binding c over the end of a tubular member a. A metal stiffening ring b with turned-over edges b<1> is arranged inside the member a, and a nozzle-piece e is fixed on the outside by a clamping-ring f.
Patent GB-899426-A (GB)
Title: Refrigerated cabinets
Inventor: RAWLINS FRANK EDWARD
IPC: A47F3/04
Filed: 1958-04-25
Abstract: 899,426. Refrigerators. UNILEVER Ltd. June 26, 1959 [April 25, 1958], No. 13272/58. Class 29 In a refrigerated cabinet having a storage compartment 1 with a top closure 2, a display compartment 3 cooled by an evaporator 8 is disposed as shown with a horizontal top opening 9 closed by a transparent hood 10 adapted to be moved into raised position-to allow access to compartment 3. The hood lies between end walls 13 fitted with fastenings 12 to retain the hood in raised position. Compartment 3 is lit by a fluorescent lamp 14. A removable U-shaped shield 15 slides over evaporator 8 and the associated vertical wall 7 of compartment 3 to facilitate frost removal. As shown, hood 10 is hinged at 11 but, in a modification, each long edge is received in a groove in the cabinet top so that the hood can be pivoted upwards about either edge at will.
Patent GB-582858-A (GB)
Title: Improvements in or relating to glass sealing machines
IPC: H01J5/26
Filed: 1944-07-11
Abstract: 582,858. Metal-to-glass seals. BENNETT, H. W. July 11, 1944, No. 13281. [Class 36] In a machine of the kind described in Specification 575,027, [Group XL], for sealing copper discs to lengths of glass tubing to produce hollow electrical resonators for use in the manufacture of electron discharge devices, a central flue is provided around which the work-supporting mandrels are mounted and towards which the gas burners for effecting the seal are directed. As shown, the machine comprises pairs of aligned mandrels 1, 6 carried by a platform 2 and head 5 respectively, these parts being given step-by-step rotation during the sealing operation. The mandrels 1, which are mounted in sleeves 12 geared to rotate on thrust bearings 13, fit necks 3 in a glass tube 4, the mandrels 6 engaging similar necks 7 in the upper tubesections 8. An intermediate tube-section 11 spaces the copper discs 9, 10 between the tubes 4, 8 and is positioned by a pair of forked arms 14 which are pivoted on the sleeve 12 and automatically opened and closed in timed sequence with the movements of the platform 2. Each mandrel 1 is fitted with a boss 17 carrying a pin 18 which fits the central apertures in the discs 9, 10 and engages a bore 20 in the upper mandrel 6 to limit the longitudinal displacement of the tube-section 8 during sealing to the disc 10. Other pins 19 on the mandrel 1 limit the compression of the intermediate tubesection 11 by abutment with the disc 10. Prior to sealing, the tube-section 4 projects slightly above the mandrel 1 and the compression of this tube-section during sealing is limited by the abutment of the disc 9 with the boss 17. To permit assembly, the mandrels 6 are carried by rods 15 slidably mounted on the head 5. In the sealing operation, the mandrels are moved past a series of gas burners which serve successively to preheat the assembly ; to heat the disc 10 to effect the seal between this and the tube-sections 8, 11 ; to heat the disc 9 for sealing to the tube-sections 11, 1 ; and, finally, to anneal the assembly. To avoid distortion through uneven heating, the head 5 is mounted about a flue 24 towards which the gas flames are directed. Apertures 25, 26 are provided in the flue, and an exhaust fan may be fitted in the canopy 27.