baber/WOPTO huggingface dataset:
Patent GB-1278148-A (GB)
Title: Improvements in and relating to the purification of acrolein
IPC: B01D3/40
Filed: 1970-06-09
Abstract: 1278148 Purifying acrolein UGINE KUHLMANN 9 June 1970 [9 June 1969] 27926/70 Heading C2C A process for the purification of crude acrolein containing water, comprises feeding the crude acrolein through a feed-in position into a distillation tower, said feed-in position being above the bottom of the tower, and concurrently feeding into said distillation tower an extraction solvent at a position above said feed-in position, extracting a liquid phase consisting substantially of extraction solvent at the bottom of the tower, extracting a vapour phase consisting substantially of anhydrous acrolein at the top of the tower, and extracting from a take off point positioned between the feed-in position and the bottom of the tower substantially all the liquid present at the take off point, cooling said extracted liquid phase to form two homogeneous layers, separating said layers, and then passing the upper of the two layers into the tower at a position between said take off point and the bottom of the tower, the lower of the two layers, which contains substantially all the water, not being passed into the tower. Preferably part of the condensate of the vapour phase removed at the top of the tower is recycled to the top of the tower, and the liquid from the bottom of the tower is recycled to supplement fresh solvent. Suitable solvents include mono- and poly-hydric alcohols e.g. ethylene and propylene glycols and iso and secondary butanols.
Patent GB-187841-A (GB)
Title: Improvements in and relating to a bearing with capillary lubrication and with automatic circulation of the lubricant
IPC: F16N7/12
Filed: 1921-10-21
Abstract: 187,841. Dallwitz, R. W. von, and Duffing, G. Oct. 21, 1921. No Patent granted (Sealing fee not paid). Capillary-action lubricating; lubricant conveyed by mechanical means.-Oil collecting in annular grooves v in the bottom brass of a bearing is applied again to the shaft and passes through grooves u, s or u<1>, s<1>, according to the direction of the shaft, finally collecting again in the grooves v. In Fig. 1, oil is applied to the shaft by capillary pads k consisting of sheets of metal which are folded so that vertical capillary gaps are formed. the whole being pressed against the shaft by a spring t. In Fig. 2, small spring-pressed rollers k are used to apply the oil to the shaft
Patent GB-1141313-A (GB)
Title: Process and device for production of compound sleeve bearings
Inventor: EBERLE JOACHIM
IPC: B29C65/48
Filed: 1966-06-23
Abstract: 1,141,313. Bearings. PRESSSTOFFWERK SPREMBERG " Dr. ERANI " VEB. 23 June, 1966, No. 28047/66. Heading F2A. [Also in Division B3] A sleeve bearing 11 has a plastic bearing surface made from one or more layers of fabric impregnated with synthetic resin, e.g. phenol cresol, which is bonded to a sheet metal supporting layer by adhesive resin. The bearing sleeve is shaped from the composite sheet into a U- shape and completed on a mandrel 3 in a forming device (see Division B3).
Patent GB-1152835-A (GB)
Title: Electromechanical Transducers
Inventor: KAHNG DAWSON
IPC: H04R23/00
Filed: 1966-06-23
Abstract: 1,152,835. Semi - conductor transducers. WESTERN ELECTRIC CO. Inc. 23 June, 1966 [28 June, 1965], No. 28136/66. Heading H4J. [Also in Division H1] An electromechanical transducer comprises a semi-conductor crystal 10 having a dielectric constant at the device operating temperature in the range 100-1000, provided with electrodes 11, 12, and containing a rectifying barrier between one electrode 11 and the body 10. Pressure transmission means, e.g. a stylus 13 pressing on the electrode 11, are provided to apply pressure changes to the crystal and thereby to vary the impedance across the rectifying barrier, or to receive pressure changes from the crystal. The preferred form comprises a ferro-electric crystal 10 of the perovskite class, e.g. KTaO 3  or KTa x  Nb 1-x O 3 , having a rectifying gold or platinum electrode 11 vacuum deposited on a freshly cleaned surface thereof, and an ohmic electrode 12 provided by vapour deposition of, e.g. chromium, aluminium or titanium. A gold film overlay may be formed on the electrode 12. Preferred crystal conductivity and dimensions and electrode thickness are given. Such a device may be included in the microphone of a telephone receiver, in which case the stylus is connected to a pressure-sensitive diaphragm. The crystal may either be mounted on a second diaphragm within the microphone to minimize the risk of damage by shock, or may be mounted on a metal cantilever support (21), Fig. 2 (not shown), insulated from the casing (23) by a block (22). A screw (26) urges the support (21) upwardly to provide a preset pressure bias between the stylus (25) and the crystal. The device may alternatively operate within a loud-speaker, variations of voltage across the rectifying barrier leading to pressure changes which may be transmitted to a diaphragm through a stylus.
Patent GB-1481531-A (GB)
Title: Flexible non skid strip and process production thereof
IPC: B29C48/07
Filed: 1974-06-25
Abstract: 1481531 Non skid strip H NAKA 25 June 1974 [6 July 1973 (3) 11 Aug 1973 17 Aug 1973 24 Oct 1973 (2) 19 Feb 1974 (2) 21 Feb 1974 (2) 15 April 1974 (3)] 28223/74 Heading E1B A non skid strip to provide a corner nosing on a stair, floor, ramp, station platform or ship has a longitudinally extending main body portion 130b and a foreward edge anchoring portion 12 spaced by an upwardly arched bendable connecting portion 81a above the upper face of the main body portion and the anchoring portion. A lower layer or wholly enclosed reinforcing strip 121 may be of rigid P.V.C., polyolefin or cellulose plastics, cloth, aluminium, copper, stainless steel or perforated or expanded steel. The strip or its upper portion may be of polyurethane or polyamide and may be multicoloured or fluorescent and have replaceable insert strips. The strip may be fixed to a concrete, wood, stone or steel step by separately applied adhesive or by pressure sensitive adhesive tape incorporated in the strip. The strip is preferably formed by extruding the plastics onto a perforated reinforcing strip. Two separate layers of different plastics may be so extruded.
Patent GB-894168-A (GB)
Title: New steroid compounds and processes for their production
Filed: 1960-08-15
Abstract: The invention comprises pregnane derivatives having at ring D the structure <FORM:0894168/IV (b)/1> and a process for the preparation thereof which comprises reacting a steroid compound of the pregnane series bearing OH groups at the 17-and 21-positions and C=O at the 20-position, with a stoichiometric excess of ethyl-orthoformate in the presence of an acid which acts as a catalyst.  Illustrative products of the invention are 3-ethoxy-17a ,21-ethoxymethylenedioxy - pregna - 3, 5 - dien - 11, 20 - dione, 17a , 21 - ethoxymethylene - dioxy - pregna - 1,4 - dien - 3, 11, 20 - trione and 3 - ethoxy - 17a ,21 - ethoxymethylene - dioxy - pregna - 3, 5, 9 (11) - trien-20-one.
Patent GB-812197-A (GB)
Title: Method of and apparatus for draining curds in the manufacture of cheese
IPC: A01J25/11
Filed: 1956-09-17
Abstract: 812,197. Cheese. GERVAIS S.A., C. Sept. 17, 1956 [Sept. 20, 1955 ; Nov. 5, 1955], No. 28307/56. Class 84.  Apparatus for draining curds in the manufacture of cheese comprises a filtering layer 1 formed by an endless band of cloth or like absorbent material, one face of which receives the curds at 10, and a supplementary layer, (also of absorbent material, and formed from a number of endless bands 14) which is applied to the face of the filtering layer opposite the face receiving the curds, the supplementary layer absorbing by capillary action the moisture accumulating in the filter, this moisture being wrung out continually by rollers 17. Curds are supplied by a pipe 11 from a hopper 12, the hopper being supplied either with new curds or with curds having already circulated once through the apparatus. Each of the endless bands 14 is wound on rollers 15 and 16 and is driven by contact of rollers 15 with wringing roller 17, the latter roller being driven by pulley 20 geared on shaft 19 to a motor 23. Contact between supplementary and filtering layers causes the latter to be driven also and to transport the drained curds to the level of rollers 2<SP>111</SP>, after which they are discharged into a loop 27. The filtering layer is held at its edges by beads which engage behind each set of rollers 3 and 2, and 4 and 2. Both layers can be washed by spray devices 25 and 29 and a scraper 26 can be mounted inside loop 27. Moisture content in the drained curds is controlled by adjusting the curds supply rate or the speed of the supplementary layer.
Patent GB-1417594-A (GB)
Title: Steel pipes provided with plastics coatings
IPC: F16L58/18
Filed: 1973-06-14
Abstract: 1417594 Coated steel pipes NIPPON KOKAN KK 14 June 1973 [25 July 1972] 28317/73 Heading B2E [Also in Division F2] A steel pipe has on its outer surface a corrosion resistant layer of a plastics material (e.g. polyethylene), a top protective layer of a plastics material (e.g. polyethylene), and an intermediate layer of an antifusion agent comprising a mixture of two or more polyolefin resins having lower molecular weights than the plastics material of the corrosion resistant layer or the protective layer the intermediate layer constituting a solid at room temperature. There may be provided an adhesive layer between the corrosion resistant layer and the pipe. The polyolefins of the intermediate layer are preferably mixtures of polyethylene (M.W. 500-2,000), polypropylene (M.W. 2,000 to 8,000), and/or polybutene (M.W. 200-1,500), and the mixture may include heavy paraffin oil. The corrosion resistant and protective layers are preferably formed by extrusion, with the intermediate layer being applied as a melt. The surface of the top layer may be smooth or corrugated.
Patent GB-899807-A (GB)
Title: A method of dispensing a free-flowing comminuted solid and an article therefor
IPC: B65D81/32
Filed: 1959-08-20
Abstract: 899,807. Surgical syringes. WELLCOME FOUNDATION Ltd. Aug. 20, 1959 [Aug. 25, 1958; Nov. 6, 1958], No. 28468/59. Class 81 (2). [Also in Group XVII] A dispenser for introducing free flairing comminuted material into a container of diluent comprises a collapsible container for the comminuted material having an outlet, normally closed by a valve or a stopper, and a dispensing member for communicating with the diluent container, the valve or stopper being displaced by increasing the pressure within the collapsible container by the application of external pressure so that the material can flow from the container by way of the dispensing member. A collapsible polyethylene container has in its neck a valve device 13 of rubber or synthetic plastic comprising a skirt 14 and a flap valve 15. A channelled piercing device 16 is screwed on the neck of the container so that it bears against a flange 12 and holds the valve device in position. A sheath 17 for the piercing device is secured by a seal 18 surrounding the neckengaging portion of the piercing device and the neck flange of the container. In use, the sheath and the seal are removed and the piercing device is caused to puncture a diaphragm closing the container of diluent. Pressure applied to the container walls forces open the valve 15 and causes the comminuted material to flow into the diluent. Instead of the valve 15, a stopper (not shown) which is blown out when the container is squeezed may be provided, fins on the inner wall of the piercing device preventing the stopper from occluding the outlet from the container.
Patent GB-206856-A (GB)
Title: Maximum demand indicator
IPC: G01R11/60
Filed: 1923-11-12
Abstract: 206,856. Landis & Gyr Akt.-Ges. Nov. 11, 1922, [Convention date]. Special quantities, registering; current-duration meters.-A supply meter having a maximum demand, indicator is arranged to register separately energy consumed at a rate above an agreed maximum demand, the registration being made either on a double-tariff meter or on a separate meter recording average consumption above the fixed limit, or an hour meter may be employed to record the number of hours during which the agreed maximum has been exceeded. As shown, the spindle 1 of a Ferraris meter drives the pointer 12 of a maximum-demand indicator 13 through a shaft 11, which is disconnected at fixed time intervals by an electromagnet 10. The pointer 12 trips a switch 14, which is adjustable on a segment 16 so as to be operated at any predetermined position of the pointer 12. The switch 14 actuates an electromagnet 8 which disengages the shaft 1 from the normal counting-train 6 and causes it to drive the excess-current counting- train 7.
Patent GB-1398898-A (GB)
Title: Cameras
IPC: G03B7/083
Filed: 1972-06-19
Abstract: 1398898 Camera exposure control AGFAGEVAERT AG 19 June 1972 [18 June 1971]  28513/72 Heading G2A A camera having an automatic exposure control system which includes a photo-electric cell and is operative to control instantaneous exposure times has a switch 1 to switch the camera to brief exposure operation in which a capacitor 8 is charged at a rate determined in accordance with the brightness of the prevailing illumination, a trigger stage 9 being triggered when the potential across the capacitor reaches a predetermined value and an indicator 10 being energized when the trigger stage is triggered to indicate that the shutter should be manually closed. A grey wedge 11 is disposed in front of the photo-electric cell and adjusted in correspondence to the set diaphragm aperture and film speed. The indicator maybe lit during the timing period and is extinguished upon triggering of the trigger stage or vice versa, and may be a glow discharge lamp or a luminescence diode. During automatic exposure control, the pointer of a meter 4 is scanned. The changeover switch 1 may be operated manually as the result of an insufficient light signal or by means of the daylight measuring device.
Patent GB-363017-A (GB)
Title: Improvement in resistance device
IPC: H01C17/02
Filed: 1930-09-24
Abstract: 363,017. Wire resistances ; insulating conductors. VEGA LABORATORIES CORPORATION, 52, Vanderbilt Avenue, New York, U.S.A. Sept. 24, 1930, No. 28555. Convention date, April 4. [Classes 36 and 37.] An electric resistance conductor is insulated by a coating of refractory oxide formed by heating a mixture of a refractory oxide with a solution of a halogen compound coated on said wire, until the halogen compound is converted into a refractory oxide. The coating mixture is formed by adding finely-ground crystallized aluminium oxide to a 25 per cent solution of aluminium chloride and is contained in a cup through which the resistance wire is passed over a pulley after being cleaned. Current is passed through the wire which is heated, first at a low temperature and then at a high temperature, until the aluminium chloride is decomposed. The wire 4 is given about five such coatings and is then wound on porcelain base 2, the whole being finally heated in hydrogen at 1000‹ C. Aluminium fluoride or bromide can be used and oxides such as beryl, beryllium oxide and magnesium oxide &c. can be used with aluminium chloride as the halogen compound, and the metal of the halide may be the same as that of the refractory oxide. After winding the wire 4 on a former it may be dipped in, or sprayed with, an insulating material to form an integral cylindrical unit without the former.
Patent GB-1236138-A (GB)
Title: Improvements in or relating to apparatus for performing mechanical operations on glass sheets
IPC: B23Q7/04
Filed: 1969-06-05
Abstract: 1,236,138. Glass-working machine. NIPPON SAFETY GLASS CO. Ltd. 5 June, 1969 [10 June, 1968], No. 28600/69. Heading C1M. A machine in which glass sheet is conveyed in turn to a plurality of working positions comprises a central rotatable pillar 2 having a plurality of arms 5 from each of which depends a short, rotatable shaft 6 terminating in a suction cup 7 for holding a glass sheet P and having, at an intermediate point, a template 8. The invention is described with reference to a machine in which a glass sheet is collected from a conveyer 50 at A and transported in turn to a scoring station B, a breaking-off station C and an edgegrinding station D, at each of which the operation is carried out with the assistance of the template attached to the shaft, and, finally, the sheet is returned to station A where it is offloaded on -to the conveyer. The machinery at each station is conventional. At the breaking off station C, a number of pairs of levers are mounted round frame 38 to engage the scored edge to break it off.
Patent GB-1092265-A (GB)
Title: Process for stopping polymerizations
IPC: C08F2/42
Filed: 1965-07-06
Abstract: The polymerization of an ethylenically unsaturated monomer or monomer mixture is terminated by adding as short stopping agent a mixture of (a) a hydroxylamine of formula R1R2OH, where R1 is hydrogen or an alkyl or cycloalkyl group containing up to 18 carbon atoms and R2 is an organic group as for R1, the hydroxylamine being used in an amount of from 0.01 to 0.15 parts per hundred parts of monomer initially present in the polymerizing mixture and (b) a water soluble N,N, di (C1- 6) alkyl substituted dithiocarbamic acid or water soluble salt thereof, the acid or salt being used in an amount less than that required to effect short-stopping of the polymerization when used alone.  The hydroxylamine and dithiocarbamic acid or its salt may be added simultaneously to the polymerization mixture as an aqueous solution.  The polymerization may be an emulsion process, e.g. for hot or cold synthetic rubber especially butadiene-styrene, and butadiene-acrylonitrile. The hydroxylamine may be N,N-diethylhydroxylamine and the salt, sodium dimethyldithiocarbamate, diethylammonium diethyldithiocarbamate, and dibutylammonium dibutyldithiocarbamate.
Patent GB-842721-A (GB)
Title: Improvements in and relating to radar apparatus
Inventor: SCOTT WILLIAM JOSEPH
IPC: G01S7/03
Filed: 1956-09-19
Abstract: 842,721. Combined transmitting and receiving systems; frequency changing circuits. BRITISH THOMSON-HOUSTON CO Ltd. Oct. 24, 1957 [Sept. 19, 1956], No. 28675/56. Classes 40(5) and 40(6). In a T.R. switching arrangement in which the T.R. cell is followed on the side remote from the transmitter by two or more parallel circuits each terminating in a crystal mixer, the distance between the T.R. cell and each mixer is not less than t Î c/4, where c is the wave velocity and t is the duration of the "spike" i.e. the short burst of energy passed by the T.R. cell during the time that the protective gap is breaking down to isolate the crystals. Preferably the distance between the T.R. cell and each mixer is equal to or greater than t x c/2 and this ensures that the "spike" is divided equally between the crystals since all the power is divided before any power reflected by a crystal returns to the T.R. cell. As shown, a T.R. cell 1 provided with a primer electrode 2 is positioned in a waveguide 3 fed from the common transmitter receiver aerial of a radar equipment. The T.R. cell is coupled to a mixer unit 5 by a waveguide 4 which is divided into two parallel circuits by a partition 6, mixer crystals 7 and 8 being respectively positioned in each half of the waveguide. To prevent undesirable reflections a V opening is provided at the entry portion of the partition 6 having a longitudinal depth of 3#G/4. Signals from a local oscillator are applied to a waveguide 9 which includes an extension of the partition 6 to divide the local oscillator energy into two equal portions which are respectively coupled via a choke coupler 10 or 11 to the corresponding crystal 7 or 8. The entry portion of the partition 6 in the waveguide 9 has a V opening of depth 3#G/4 and the distance between each choke coupling 10 or 11 and its respective crystal 7 or 8 is #G/4. A coupling 12 supplies the intermediate frequency output from the crystal 7, a similar I.F. coupling being provided for the crystal 8. Specifications 597,662 and 624,421 are referred to.
Patent GB-1119885-A (GB)
Title: Electrical connector housing
IPC: H01R13/74
Filed: 1966-06-27
Abstract: 1,119,885. Two-part couplings. AMP Inc. 27 June, 1966 [21 July, 1965], No. 28683/66. Heading H2E. A connector housing 2 is secured in a panel aperture by bosses 30 formed on tongues in its side walls 26 and which snap through the aperture, and by resilient T-shaped stops 40 formed on its end walls 24 and which are deformed against one face of the panel. Additional bosses 34 may be formed on the tongues, enabling the housing 2 to be inserted in the aperture in either direction and be retained by the stops 40 and one set of bosses 30 or 34 (Figs. 2 and 3, not shown). The housing 2 comprises blocks 16 and 18 carrying pin contacts 20 and a projecting hood 22, a mating housing 4 comprising blocks 6 and 8 joined by webs 10 and formed with bores carrying socket contacts 13.
Patent GB-1380035-A (GB)
Title: Bifilar helical multiwire proportional chamber
IPC: H01J47/06
Filed: 1973-06-18
Abstract: 1380035 Radiation counters UNITED STATES ATOMIC ENERGY COMMISSION 18 June 1973 [18 July 1972] 28754/73 Heading G1N [Also in Division H1] A proportional radiation counter comprises a plane of anode wires 3 surrounded by two helical cathode windings 14, 10, the first 14 being wound around the chamber and over an earthed copper bar 6 and the second winding 10 being wound between the turns of the first and insulated from the bar 6, the output signals being taken from taps 8 on the second cathode winding to an amplifier-discriminator and a digital computer. The electrodes are arranged on polystyrene sheets 2, 4. The anodes are of gold plated tungsten and the cathode windings of copper. The chamber is designed to operate at 4000 volts with a filling of 50% argon 50% isobutane at 560 mm.Hg. Each tap 8 is connected to an amplifier and discriminator, Fig. 2 (not shown), the outputs of which are arranged cyclically in three groups each of which has a time-to-digital converter. A set of gates and flip-flops is used to record the first tap in each group which has a pulse for each event detected and by measuring the difference in arrival of induced pulses at different taps (since the cathode windings act as delay lines) the original position of a detected particle can be calculated in the digital computer.
Patent GB-789333-A (GB)
Title: Dyeing of highly polymeric esters
Inventor: GATES WILLIAM ELLIOTT FREW
Filed: 1955-10-10
Abstract: Linear aromatic polyester structures, e.g. films, are dyed with a water-insoluble acetate dyestuff in the presence of a chloracetic acid, e.g. trichloracetic acid, and a wetting agent, preferably of the anionic type.