baber/WOPTO huggingface dataset:
Patent GB-1376227-A (GB)
Title: Recovery of pure cyclopentene
IPC: C07C1/00
Filed: 1972-06-12
Abstract: 1376227 Distilling hydrocarbons BAYER AG 12 June 1972 [2 Dec 1971] 27243/72 Heading C5E Cyclopentene, obtained by thermal splitting of dicyclopentadiene and hydrogenation of the product, is purified by distillation in two stages. The first stage is in a column of 100 to 180 trays, the feed is to the middle of the column, and low-boiling impurities are taken off overhead at a reflux ratio in the range of 5 : 1 to 15 : 1. The bottoms from the first stage has a cyclopentadiene content less than 20 p.p.m. and is fed to a second column, where cyclopentane and other high-boiling impurities remain as bottoms and pure cyclopentene is taken off overhead. The second column may have 60 to 90 trays, and the feed to this column may be to its middle. There may be a preliminary separation in an evaporator with a column of 2 to 10 plates, in which high-boiling impurities remain as bottoms and the overhead stream provides the feed to the first column above. The bottoms from the second column may be recycled to this evaporator, while the overhead product from the first column may be recycled to the splitting step or the hydrogenation step, and the bottoms from the evaporator to the splitting step.
Patent GB-487372-A (GB)
Title: Improvements in or relating to braun tubes
IPC: H01J29/48
Filed: 1937-10-07
Abstract: 487,372. Electron multipliers. ZEISS IKON AKT.-GES. Oct. 7, 1937, No. 27282. Convention date, Aug. 13. [Class 39 (i)] Secondary-emitting grids 14 are placed between (i) the cathode and wehnelt cylinder 13 and (ii) the electron-optical lens 15 and the deflecting systems 17, 18 in a cathode-ray tube.
Patent GB-1482978-A (GB)
Title: Expanding metal tubes
IPC: B21D39/06
Filed: 1975-06-27
Abstract: 1482978 Tube expanding; welding by pressure IMPERIAL CHEMICAL INDUSTRIES Ltd 26 April 1976 [27 June 1975] 27291/75 Headings B3J and B3R A metal tube 10 is expanded by a shocksensitive explosive 24 detonated by a shock wave generated outside the tube and conducted to the explosive 24 through a non- metallic tube 15. The end of one tube may be expanded within the end of a larger tube, or into the tube plate 12 or a nozzle. Tube ends may be expanded singly, consecutively or simultaneously, and welds will result if sufficient explosive is used. The explosive 24 may be lead azide which may be used with a secondary explosive 23 such as pentaerythritol tetranitrate, both being compressed directly into the end of the polyethylene, polypropylene, polyvinyl chloride or nylon tube 15, or inserted therein in separate containers. The shock wave may be generated by exploding a charge of explosive, exploding a wire by electric current or, as shown, by discharging a spark across a gap 21 between electrodes 22. The spark may be produced by discharging a capacitor or by a piezoelectric device. The inside of the tube 15 may be coated with reactive substance, such as the explosive 23, which on ignition by the shockwave adds energy to the shockwave.
Patent GB-429974-A (GB)
Title: Improvements in or relating to advertisement displaying apparatus
IPC: G09F11/26
Filed: 1934-09-24
Abstract: 429,974. Changing signs. WEULE, F., 344, Steintor, Bockenem-on-Harz, Germany. Sept. 24, 1934, No. 27339. [Class 3 (i)] Non-endless display bands 14 mounted on rollers 9 to show at the sides of a column 1, are driven by an electric motor 15 controlled electrically by a clock 6. The clock drives two cams 67, 74 of which the former rotates once in, say, several hours and controls the major periods of operation of the apparatus, and the latter rotates once in, say, a minute and closes the motor circuit for, say, one second. Notches 85 are formed in one edge of one of the bands 14 at intervals equal to the extent of each display panel, and similar notches 97 are formed in the opposite edge, one at each terminal end of the band. The apparatus is in action only when the main switch is closed by the cam 67. The momentary closing action of the cam 74 starts the motor 15, and brings a spring-pressed feeler-lever 55 out of a notch 85 on to the edge of the band 14. This closes the motor circuit and keeps it running till the lever 55 drops into the next notch 85, this being effected before the cam 74 has again rotated to depress the switch lever 76. Similar feeler-levers 59, 60 drop into the notches 97 to throw over a switch 63 which reverses the direction of the current through the motor and winds back the band 14 in a similar intermittent manner. A clutch 21 automatically transfers the motor drive to the lower or the upper rollers according to the direction of rotation, all the bands being geared together. Three sets of four rollers 54, 57, 58 guide the band edges in the region of the levers 55, 59 and 60.
Patent GB-842239-A (GB)
Title: Improvements in or relating to automatic braking control
IPC: H01H35/10
Filed: 1958-08-26
Abstract: 842,239. Inertia-operated brake control. RECHERCHES ETUDES PRODUCTION R.E.P. Aug. 26, 1958 [Aug. 29, 1957], No. 27372/58. Class 103 (1). An inertia-operated automatic brake control apparatus comprising a shaft 3, having means such as the rubber ring member 39 whereby it may be driven from one wheel of the vehicle, an inertia fly-wheel 6 pivotally mounted between stops (not shown) carried by the shaft 3 and fly-wheel 6, a casing 1 enclosing the shaft 3 and fly-wheel 6 and supporting at one end a bearing 2 for the shaft 3, a further shaft bearing 4, with the casing 1, being electrically insulated as by means of members 17 and 31, both from the shaft and the casing, there are also provided a pair of rotating contacts of which one 24, as shown in Fig. 4, is supported by the fly-wheel 6 and the other 23 by the insulated bearing so as to rotate with the shaft and make contact upon relative movement between the shaft and fly-wheel. The construction shown provides a brake controller of the type specified adapted to be manufactured from simple members by mass production at low cost and simple to mount and adjust. The bearing 2 has an external splined surface held in position by having the boss of the casing 1 swaged round it, so as to allow the bush 2 to swivel.. Such a construction allows fairly wide tolerance to be accepted for the machined parts.
Patent GB-463533-A (GB)
Title: Sewing machine safety device
IPC: D05B73/12
Filed: 1936-10-09
Abstract: 463,533. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.) Oct. 9, 1936, No. 27416. [Class 112] In a machine for sewing a group of stitches such as a button - attaching machine, means are provided for preventing lifting the presserbar till the cycle is complete and the thread severed. The presser-bar 11 carrying the presser-foot 12<1> has a projection 13 engaged by a spur 14 on the bar 15 which is lifted by the lever 24 pivoted at 25. When the machine is started by the actuation of the lever 45, a group of stitches is formed by the usual devices controlled by the cam 16 after which the machine is automatically stopped by the usual mechanism 40. Raising of the presserbar by the treadle-controlled lever 24 is prevented before the machine has stopped by a ring 27 attached to the cam 16 by screws 28. This ring engages a hardened steel finger 31 adjustably secured to the lever 24 by a set screw 32. The presser-bar can only be lifted when one of the diametrically opposite notches 29, 30 come opposite the finger 31, which only happens when the cycle is complete. The ring 27 is made of cast iron and hardened steel wear plates 33 may be adjustably fitted in grooves for obtaining exact timing and taking up wear. To prevent starting the machine before the presser is engaged with the work, the lever 24 is extended to overlie the belt shifting guide 41 so that the starting lever 45 cannot be operated while the finger 31 is engaged in a notch.
Patent GB-240324-A (GB)
Title: A kettle
IPC: A47J27/21
Filed: 1924-11-18
Abstract: 240,324. Flegg, E. W. Nov. 18, 1924. Kettles.-A kettle is formed with parallel flat front and rear walls B, C, connected by curved side walls. On the flat top are provided the spout F, which projects over the front wall, the filling opening G, and the handle O.
Patent GB-1016164-A (GB)
Title: Improvements in or relating to filter assemblies for fluids
IPC: B01D29/01
Filed: 1962-07-18
Abstract: 1,016,164. Air filters. AMERICAN AIR FILTER CO. Inc. July 18, 1962 [July 31, 1961], No. 27644/62. Heading BIT. The edges 41, 43, Fig. 4, of a pleated sheet of filter material 40 e.g. glass fibre are embedded in a surrounding supporting frame 52, Fig. 6, of rigid expanded synthetic plastic material e.g. gas-expanded polyurethane foam. In assembly the filter sheet 40 is draped over floating rods 13 extending between opposite fingers 9 of a female jig portion and projecting therefrom at serrated portions 33. The edges 43 of the sheet 40 are serrated and abut rod portions 33 whilst the other opposite ends 41 of the sheet overlap inner end panels 8 of the jig 3 and are perforated at 42. The valleys of the pleats are provided with V-sectioned rods 44, Fig. 3, and are engaged by fingers 27 of a male jig member 4. The plastic compound which at ambient temperature is a viscous paste is then applied to the inner faces of outer side and end walls 17, 18 hinged at 14 to the base 6 of the jig 3 and having heating coils embedded therein. The walls 17, 18 are swung to their vertical position and clamped therein after which heat is applied and the plastic paste expands and fills the zone enclosed between the inner and outer walls of the jig 3. After the plastic has set the jigs are removed leaving the pleated filter sheet 40, upper and lower rods 13, 44 and the surrounding frame 52 as an integral unit.
Patent GB-519687-A (GB)
Title: Improvements relating to devices for periodically interrupting an electric circuit
IPC: H01H37/60
Filed: 1938-09-23
Abstract: 519,687. Thermal switches. ELMER, W. B. Sept. 23, 1938, No. 27750. [Class 38 (v)] In a device for periodically interrupting an electric circuit in which a pair of electric contacts connected in a circuit are opened and closed by a resilient snap action member capable of occupying two positions of stability and operated by a thermostatic element responsive to current flow, the said member has inherent curvatures which are reversed when changing from one stable position to the other to open or close the contacts, and provision is made of means for adjusting the member in relation to the thermostatic element to vary the time ratio during which the contacts are open and closed. Posts 3, 4, carried by and insulated from a plate 5, form terminals of a heating unit and are connected to the forward legs of U-shaped bimetalic strips 17, 18, the rear legs of which are connected by, and insulated from, a strip 15 supporting a U-shaped bimetallic element 9 of similar thermostatic action, the forward leg of which is free ; screws 21 separate the element 9 from the strips 17, 18 the latter compensaing for variations in ambient temperatures. The element 9 comprises a wide strip subdivided into a grid to give a tortuous path and greater resistance, and one end of the grid is connected by a copper strip 20 to the strip 17 or to the post 3; the forward leg of the strip 9 is connected by a copper strip 12 to a plate 10 carried by and insulated from, said leg and carrying a contact 8. A U-shaped abutment 29 is also carried by, and insulated from, said leg. An apertured snap - acting spring member 6, secured by tongue 22 to a post 1 connected to the source of power, has two inherent curvatures with their axes at right angles and carries a contact 7 and a back spacer 30 positioned between the contact 8 and the front leg of abutment 29. A shaft 24, carrying knob 38, is threaded through the plate 5 and has an insulating tip 25 adapted to adjust the strain on member 6 to vary its action ; the shaft 24 also carries an insulating disc 27, held by lock nut 28 and carrying a projecting arm 26. On first rotating shaft 24 arm 26 frees a switch member 34 for contact with member 35 on post 4 to complete one connection to a heating element, say, of a domestic range, and tip 25 next strains member 6 to cause it to snap over dead centre and close contacts 7, 8 to complete the other connection ; as strip 9 is heated, the free end advances until member 6 snaps over to break the connection, which is again closed on cooling of the strip 9. Further rotation of the shaft 24 adjusts the time intervals between opening and closing of the contacts ; after a complete rotation, the arm 26 contacts an arm 36 on a switch member 33 to cause the latter to contact with a member 32 on post 3, thereby short-circuiting the strip 9 while the heating element is under maximum current. The parts may be enclosed in a casing with top and bottom screens allowing air flow for cooling purposes.
Patent GB-533180-A (GB)
Title: System of and means for protecting building structures
Inventor: GWYNNE BURNELL BRADER
IPC: E04H9/06
Filed: 1939-10-13
Abstract: 533,180. Pavement light protectors &c. BRADER, G. B., and PRITCHARD, F. Oct. 13, 1939, Nos. 27878 and 28589. [Classes 20 (iv) and 87 (i)] A protective wall to protect pavement lights &c. from falling  masonry, blast &c. is made up of a number of reinforced concrete units each in the form of a right-angled triangle, Fig. 6, the hypotenuse 3 of which serves as a deflector surface. Preferably each unit is hollow, and includes a strut. 9. Holes 10 are provided at each angle to enable bolts to be passed through an assemblage of such units, the end units being recessed, Fig. 9, to receive the securing nuts 16. Alternatively, face plates. strips or angle bars may be provided on the inclined front walls 3 of the units, and these may be pinned or otherwise secured to the end units. The end faces of the units may be grooved to interlock with each other.
Patent GB-1071385-A (GB)
Title: Explosives
Inventor: GRANT CHARLES HENRY
IPC: C06B47/14
Filed: 1964-07-07
Abstract: A water-resistant flowable explosive composition comprises by weight not more than 60% alkali metal nitrate, 10-85% ammonium nitrate, 5-40% particulate flake aluminium, 5-25% water, and 0.2-1.5% of a gelling or thickening agent.  The aluminium has a size distribution of 60-80% of 4-50 mesh and the balance 50-150 mesh and a thickness distribution of 5-10% up to 1 mil, 10-94% 1-10 mils, and the balance 10-30 mils.  An aluminium alloy containing at least 60% aluminium may be used instead of the aluminium. A water-miscible organic liquid may also be present; examples are methanol, propanol, butanol, ethylene glycol, propylene glycol, glycerol, formamide, and mixtures thereof. The gelling agent may be guar gum which may be cross-linked using sodium dichromate solution, or a saturated solution of ammonium nitrate in ammonia, in an amount such that the resulting explosive composition is pliable and gelatinous.  For use in bore-hole blasting operations, the explosive may be placed in polyethylene bags. Reference has been directed by the Comptroller to Specification 947,045.
Patent GB-980551-A (GB)
Title: Improvements in packages
Inventor: BAILEY ARTHUR RAYMOND
IPC: B65D5/28
Filed: 1960-08-12
Abstract: 980,551. Opening boxes by tearing. ROSE BROS. (GAINSBOROUGH) Ltd. Aug. 10, 1961 [Aug. 12, 1960], No. 27915/60. Heading B8P. A tubular carton is formed from a single blank and comprises a sealing tab glued at parts 23 to the outer side of wall 14 and having perforations extending across the side wall 11 and the sealing tab so that the box can be opened by lifting the intermediate portion 24 of the flap. The box may contain a wrapped charge of tobacco and after opening, the intermediate portion may be replaced between this charge and the inside of wall 14 to close the box. The wall 14 may have a notch cut out at its top edge to facilitate re-opening. Specification 527,155 is referred to.
Patent GB-1394747-A (GB)
Title: Optical systems including passive integrated optical components
IPC: G02B6/136
Filed: 1972-06-15
Abstract: 1394747 Light guides SIEMENS AG 15 June 1972 [24 June 1971] 27953/72 Headings G2J and G2X A light guide comprises a carrier having a layer of light-sensitive material applied to a surface the roof, the layer having been exposed to light at selected areas which are then photo-chemically developed so as to produce surface relief on the carrier, Fig. 1 (not shown) or abrupt or gradual changes in the index of refraction of the layer, Figs. 2 to 5 (not shown). The layer may be a photo-lacquer which is treated with a solvent after exposure, or a photopolymeric material, or dichromatized gelatine, or silver halide, or it may be a monocrystalline layer, e.g. lithium niobate. The light guide may form a directional coupler, Figs. 6, 7 (not shown) a band-pass or band-eliminating filter, Figs. 8, 9 (not shown), or a holographic lens, Figs. 10, 11 (not shown).
Patent GB-1395871-A (GB)
Title: Semiconductor devices
IPC: H01L29/00
Filed: 1972-06-15
Abstract: 1395871 Semi-conductor devices MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 15 June 1972 [15 June 1971 (2) 9 Aug 1971 (2)] 28005/72 Heading H1K A metal dot is alloyed to one face of a semiconductor wafer of one conductivity type to form a recrystallization zone of opposite type, the zone extending to, or material being removed to expose it at, the opposite wafer face. Material of the opposite type is then brought into contact with an exposed area of said zone to form a PN junction. Typically the zone is formed by alloying aluminium through an N- type silicon wafer. N-type silicon is then epitaxially deposited over the P-type recrystallized zone exposed on the back face of the wafer and aluminium deposited thereon to form a contact. The junction may then be relocated by heating above the alloying temperature. As an alternative a plate of N-type silicon is placed against the back face, the assembly reheated to bond the plate to the wafer by extension of the recrystallization zone and an aluminium silicon eutectic wafer heated in contact with the plate to form an electrode. To form a hyper abrupt junction a specified tinantimony-aluminium alloy is alloyed through a P-type silicon wafer. During the epitaxial deposition of P-type silicon on the recrystallized zone aluminium diffuses out into it to form a P + region adjacent the N-type recrystallized zone. In a modification of this a P-layer epitaxially grown on a P+ base is placed against the recrystallization zone and heating effected to extend this zone into the layer and diffuse the aluminium to form the P + layer. By removing part or all of the residual aluminium or tinantimony-aluminium alloy prior to reheating the extension of the recrystallization zone may be controlled.
Patent GB-158401-A (GB)
Title: Means for supporting mirrors and the like
IPC: A47G1/24
Filed: 1919-11-12
Abstract: 158,401. MacLaren, D. G. Nov. 12, 1919. Brackets, adjusting and securing.-A mirror or like support comprises an @ shaped bracket made of one piece of metal, the vertical part c having a vacuum sucker d attached thereto and cranked at e so that the lower part rests against the wall &c. @ to which the sucker d is attached to the horizontal part b of the bracket by a universal joint, the part b being provided at its outer end with spring elements b<1>, b<2> gripping the ball g attached to the mirror a. A sliding band b<3> adjusts the grip of the parts b', b<2> on the ball g.
Patent GB-1382983-A (GB)
Title: Water purification
IPC: C02F1/58
Filed: 1971-06-15
Abstract: 1382983 Animal feeds S E JORGENSEN 21 Dec 1971 [22 Dec 1970 15 June 1971] 60859/70 and 28021/71 Heading A2B [Also in Division C1] An animal foodstuff comprises the protein- and oil-containing precipitate produced by treating a waste water from a fish fillet factory with esters of starch decomposition products produced by treating potato or corn starch with sulphuric acid.
Patent GB-873020-A (GB)
Title: Process for carrying out low pressure polymerization
IPC: C08F10/00
Filed: 1959-08-17
Abstract: A method of polymerizing a -olefins with a catalyst system comprising a halide of a metal of Group IV(A), V(A), VI(A) or VIII of the Mendeleef Periodic System reduced from a higher to a lower valency state and a metal-containing compound capable of reducing said halide, in a hydrocarbon diluent in a reactor at 0 DEG -100 DEG C., comprises circulating the reaction mixture containing catalyst, diluent and monomer at a velocity of 5-25 feet per second through a confined mixing zone in the reactor, passing the reaction mixture through a plurality of further tubes in an annular portion of the reactor about the mixing zone, the tubes being externally cooled, discharging the reaction mixture into an annular zone beyond said tubes, said annular zone having a volume larger than that of said mixing zone, recirculating at least a portion of the reaction mixture through the mixing zone and withdrawing a product mixture comprising polymer, diluent and unreacted monomer from the reactor.  The monomer may be ethylene, propylene, butene-1, heptene-1, dodecene-1, butadiene, isoprene, piperylene, vinylcyclohexene, cyclopentadiene or 1, 4-pentadiene.  The diluent may be isopentane, n-heptane or xylene. Catalyst residues may be deactivated and removed by washing the product with alcohols, e.g. methyl alcohol, isopropyl alcohol or n-butyl alcohol, preferably together with a chelating agent, e.g. acetylacetone, followed by washing with water, alcohol or hydrochloric acid.  In an example the polymerization of propylene in xylene in the presence of a catalyst comprising titanium trichloride and aluminium triethyl is described, and a reactor for carrying out the process is described and illustrated.  Belgian Specification 538,782 is referred to.
Patent GB-351345-A (GB)
IPC: B63B19/00
Filed: 1930-09-19
Abstract: 351,345. Cabin lights. LALANNE, L., 354, Boulevard National, Marseilles, France. Sept. 19, 1930, No. 28102. Convention date, Nov. 15, 1929. [Class 113 (i).] A device for effecting first the parallel movement of the glass holder away from the fixed frame and next after adjustment of the device a rotary movement of the glass holder 21 so that the glass itself may be moved on its pivots after the holder has been moved to any suitable angle of inclination comprises a handle 2 which initially can be clutched to a pinion 8 which through the engagement of teeth 11 with recesses in a ring 12 effect the parallel movement of the glass holder 21 from the gasket 22 by the engagement of the screw 13 with a thread 18 on the ring. The subsequent rotation of the frame holder is effected by withdrawing the handle 2 from engagement with the pinion 8 into engagement with a gear 14 which engages with teeth on a ring 16, having projections 17 which take into a part connected with the ring 19.
Patent GB-603559-A (GB)
Title: Improvements in ventilator for water closet
IPC: E03D9/052
Filed: 1945-10-25
Abstract: 603,559. Closet ventilators. KENDRY, W. A. Oct. 25, 1945, No. 28130. [Class 26] A generally U-shaped ventilating member 16 is fitted within the rim 8 of a water closet bowl 7 by a bight 18 and springy legs 17, which may form an inverted channel, having lips 22 and projecting fingers 23 to engage the rim 8. An eduction duct 24 is connected with an exhaust fan, which may be connected with the soil pipe 15, and may be driven by a water motor 30, controlled by a valve 34, opened to admit water under pressure when a plunger 35 is depressed by the seat 9 in use, the water being discharged into the delivery pipe.