baber/WOPTO huggingface dataset:
Patent GB-1176966-A (GB)
Title: Improvements in or relating to Circular Waveguide Joints
IPC: H01P1/04
Filed: 1967-08-30
Abstract: 1,176,966. Waveguide joints. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 30 Aug., 1967 [15 Oct., 1966], No. 39681/67. Heading H1W. An expansion joint for circular waveguides comprises a stack of annular-conical springs 3 located by a conductive or dielectric sleeve 4. The springs have an internal diameter equal to that of the waveguides 1, 2 to be joined and have an axial length small compared with the propagated wavelength. The internal and external edges of the springs are formed by grinding whilst the stack is held compressed to its fullest extent. The internal edges may be plated with copper or silver. Rotation of the springs is prevented by a longitudinal wire (not shown) located in aligned notches in the edges of the springs. The sleeve 4 carries seals 5 and may be sufficiently flexible to allow bending of the joint. The arrangement is intended for H 01  wave propagation.
Patent GB-808713-A (GB)
Title: Dyeing of polyacrylonitrile textile materials
IPC: D06P3/70
Filed: 1956-12-31
Abstract: Polyacrylonitrile fibres are dyed with a monoazo dyestuff, free from sulphonic and carboxylic acid groups, but which contains at least one primary, secondary or tertiary amino group or quaternary ammonium group which is not directly attached to or forms part of an aromatic nucleus but is attached to a carbon atom of a terminal radical of the dyestuff molecule.  The dyestuffs are employed in the form of their water-soluble salts and are applied from an acid or alkaline bath. The dyestuffs may belong to the benzene-azobenzene, benzene-azonaphthathalene, benzene-azo-arylpyrazolone, benzene-azo-acylacetic acid-aryl- (or -alkyl-) amide series or to the heterocyclic series.  The amino group, which may be contained in either the diazo- or the azo-component, may be attached to an aromatic nucleus via an alkylene, alkyleneamino, carboxylic acid ester, carboxylic acid amide or sulphonamide group.  Numerous dyestuffs are specified. The dyestuff of the formula <FORM:0808713/IV (c)/1> is obtained from 5-chloro-2-cyano-aniline--> 1 - {N - ethyl - N - (b  - dimethylamino - ethyl)-amino} - 3 - methylbenzene (quaternated with dimethyl sulphate).  This method is generally applicable to the other dyestuffs specified.  Specification 785,988 is referred to.
Patent GB-1426491-A (GB)
Title: Exhaust gas purifying apparatus for internal combustion engines
IPC: F01N3/038
Filed: 1973-08-22
Abstract: 1426491 Exhaust gas cleaner K AOI 22 Aug 1973 [13 Oct 1972] 39848/73 Heading BIT [Also in Division F1] An exhaust gas purifying cylinder 1 includes a plurality of treatment stages each comprising three chambers 4a, 9a, 11a, 4b, 9b, 11b and 4c, 9c, 11c with perforated plates 5a, 5b, 5c separating the first two chambers of each stage. The volumes of the chambers of each stage decrease from stage to stage in the gas flow direction and the size of the perforations 5h 1 , 5h 2 , 5h 3  in the plates 5 also correspondingly decrease from stage to stage. Adiabatic expansion occurs at the plates 5 and depending upon the gas flow rate is sufficient at one or more of the plates to cause sufficient cooling of the gas for condensation of vapour therein to occur in the associated chamber 11. The chambers 9 are defined by perforated walls 6, 8 and contain heat resistant fibrous material which traps carbon particles and lead. A tube 7 extending centrally through the cylinder 1 provides a path for the flow of cooling air caused by a fan or movement of a vehicle on which the cylinder is mounted. Particles in the gas are collected in a chamber 3 upstream of the cylinder 1 as a result of the swirling flow in the chamiber between the inlet pipe 2 and the chamber outlet. Liquid is drained from the chambers 9 through holes 1h, chamber 15 and pipes 16 to a tank 14. The number of perforations in the plates 5 may decrease from stage to stage in the gas flow direction.
Patent GB-1535538-A (GB)
Title: Injection moulding machine closing mechanism
IPC: F15B15/14
Filed: 1976-09-27
Abstract: 1535538 Mould closing unit DR BOY KG 27 Sept 1976 [2 Oct 1975] 40015/76 Heading B5A A drive for a two-stage injection mould closing unit comprises at least two parallel double-acting piston and cylinder devices 1, 2 having piston rods 6, 8 and 9 on both sides of the pistons 5, the piston rod 8 on one side of one piston being thicker than the other 6, the piston rod 9 on the corresponding side of the other piston being thinner than the other 6, and fluid connection between opposite sides of at least one piston being controlled by rotation of a perforated disc 13. Four piston and cylinder devices 1-4 are arranged at the corners of a square with similar ones at opposite corners. The piston rods 6 are attached to a fixed mould support 7 and the cylinders to a movable support 11. Hydraulic supplies are fed through a fixed crosshead 11 and piston rods 8 and 9. To close the mould pressure is applied to both sides of the pistons in cylinders 1 and 4, and to open the mould pressure is applied to both sides of the pistons in cylinders 2 and 3. To clamp the mould at higher pressure, pressure is applied to the right hand side only of all pistons. Pressure fluid applied through the outer coaxial duct 23 of a piston rod 9 reaches the left hand side of the piston 5 through a duct 24 and also enters a chamber 22 via a duct 24<SP>1</SP>. The pressure in chamber 22 acts between shoulders on the piston 5 and the disc 13 to rotate the disc 13 to the Fig. 4 position where fluid can pass to the other side of the piston through aligned holes 12 and 14. To produce the clamping pressure, pressure is applied through the inner duct 19 and duct 18 to another chamber 17 (Fig. 3, not shown) between the piston 5 and member 13 to rotate the disc 13 to a position where the holes 12 and 14 are out of alignment. This opens a passage to a duet leading to the right hand side of the piston so that pressure is applied only to this side. The other type of piston and cylinder device 1, 4 has a similar rotary disc 13 and this requires a short burst of pressure on the left hand side to align the holes 12, 14 for the mould opening phase.
Patent GB-1010720-A (GB)
Title: Improvements in printing apparatus
IPC: B41F27/12
Filed: 1964-10-01
Abstract: 1,010,720. Printing apparatus. PAPER CONVERTING MACHINE CO. Inc. Oct. 1, 1964 [Dec. 3, 1963], No. 40034/64. Heading B6C. Printing surfaces.-The ends 43a, 43b, Fig. 6, of a flexible printing plate 28 are secured within a longitudinal generally dove-tail shaped recess 32 in a printing cylinder 18 by means of a pair of elongated clamping members 36, 37 arranged sideby-side in said recess, both said members being urged towards the wall 35 of the recess by spring means. The member 37 is urged towards the wall 35 by springs 38 extending through the member 36, and the member 36 is urged against the member 37 by springs, Fig. 7 (not shown, located in recesses in the member 36 and co-operating with a wall 34 of the recess 32. A projection 42, which may be rectangular, is provided on the member 36 and the bottom surfaces of the members may be covered with molybdenum disulphate tape to reduce friction. Both members are provided at their ends with slots to enable them to be forced apart. The end 43b of the plate 28 may alternatively be secured to the upper surface of the member 36 by adhesive, Fig. 9 (not shown). Inking apparatus.-A train for delivering ink from a fountain roller 19, Fig. 1, provided with a blade 20, to the printing cylinder 18 comprises a feed roller 21, two longitudinallyvibrating rollers 22, 25, a pair of ink distributing rollers 23, 24, and a pair of forme-inking rollers 26, 27.
Patent GB-844415-A (GB)
Title: Improvements in and relating to the sealing of electrical components and apparatus
Inventor: HEMMER HUGH DONALD
IPC: H01G4/224
Filed: 1957-12-24
Abstract: 844,415. Capacitor casings. JOHNSON, MATTHEY & CO. Ltd. Dec. 22, 1958 [Dec. 24, 1957], No. 40130/57. Class 37. An electric component is sealed within a liquidfilled container, a layer of cellular elastomer being provided therein to accommodate variation of the liquid volume with temperature. A capacitor 3 is sealed within a can 6 containing oil 8; its leads 7, 7 passing through insulators 10, 10 soldered within apertures in the can lid. A layer 4 of cellular elastomer covers the lower part of the can interior, and air pockets adjacent the elastomer surface are prevented from bursting on contraction of the oil 8 by a skin of unexpanded elastomer 12.
Patent GB-961419-A (GB)
Title: Plate heat exchanger
IPC: F28F3/08
Filed: 1961-11-09
Abstract: 961,419. Plate heat exchange elements; surface condensers. SEPARATOR A.B. Nov. 9, 1961 [Nov. 10, 1960], No. 40161/61. Heading F4S. [Also in Division B1] A plate heat-exchanger comprises a bank of spaced-apart vertically mounted plates such that adjacent plates define therebetween a heat-exchange chamber, said chambers being alternatively of two kinds, one kind being sealed about all its edges and the other kind being sealed only to a partial extent in that its upper edges open into a housing which encloses the plates. As shown, the heat-exchanger consists of separate plate units, one a condenser unit 24 and the other an evaporator unit 23 enclosed in an insulated (not shown) housing 25. The heating medium enters evaporator unit 23 via pipe 34 and is discharged via pipe 35. The medium being evaporated, e.g. brine enters the evaporator unit at pipe 36 and concentrated medium discharges via pipe 37, the vapour meanwhile escaping through the unsealed longitudinal upper edge 13a of alternate chambers in the evaporator unit. Splash guards 31 prevent liquid entering the condenser unit through open edges 13, the liquid being drained through discharge outlet 32. Vapour entering at 13 is condensed on the walls of the chambers and discharged via pipe 40. The cooling medium entering and leaving via pipes 38 and 39 respectively. To prevent throttling, the distances between the plates forming the open heat-exchange chambers are larger than the distances between the closed heat-exchange chambers and thicker gasket material may be used to achieve this result. In a modification the evaporator and condenser units may be assembled in a single plate unit by means of a common clamping device.
Patent GB-1371275-A (GB)
Title: Fibre dispersions and non-woven articles made from them
IPC: D21H17/00
Filed: 1972-08-30
Abstract: 1371275 Non-woven fabrics RHONE-POULENC SA 30 Aug 1972 [31 Aug 1971] 40230/72 Heading D2B Non-woven fabrics are made by wet laying an aqueous dispersion comprising 100 parts by wt. of fibres, of which at least part are artificial and/or synthetic, 0.5 to 50 parts by wt. of a polyurethane resin powder of particle size from 20-300Á and having a softening point below that of the fibres, and 0 to 25% by wt. based on the wt. of the resin of a dispersing agent, in at least 1000 parts by wt. of water, and drying the wet-laid web. Drying is effected at a temperature sufficient to cause the polyurethane powder to melt but not the fibres. Specified artificial fibres include viscose and cellulose ester fibres. Examples of synthetic fibres include fibres of casein, polyamide, polyester, acrylic, modacrylic, polyolefin, vinyl chloride/vinyl acetate or vinylidene chloride copolymers, and derivatives of formaldehyde or polyvinyl alcohol. The dispersing agent may be a surface active agent, e.g. N-(dimethyl dodecyl) phenyl ammonium chloride, or a polyamide modified by reaction with epichlorohydrin. Natural fibres which may be present include wood pulps, wool, cotton, and mineral fibres such as asbestos or glass fibres. The non-woven fabrics may be used in the manufacture of handkerchiefs, bed linen, dish cloths and hospital clothing.
Patent GB-1151878-A (GB)
Title: Zeolite Regeneration Process.
IPC: C10G25/12
Filed: 1966-09-09
Abstract: 1,151,878. Regenerating deactivated zeolites. UNIVERSAL OIL PRODUCTS CO. 9 Sept., 1966 [13 Sept., 1965], No. 40294/66. Heading B1L. [Also in Division C5] Deactivated zeolites which have been used to separate paraffins from hydrocarbon mixtures are regenerated by (a) treating the zeolite with a hydrocarbon-water mixture at below 204C., in such a way that if the temperature exceeds 177C. it does so for periods insufficient to cause hydrothermal damage to the zeolite, (b) washing the treated! zeolite with an aqueous liquid, the major proportion of which is water, at below 177C. in order to regenerate it, (c) removing the water by displacement with a hydrocarbon at below 177C. and (d) drying with a hydrocarbon vapour at below 371 C. Stages (a), (c) and (d) are all suitably conducted in the vapour phase, the hydrocarbon used being preferably pentane. In stage (a), the temperature is preferably less than 177C. throughout and the mixture contains less than 10%, and preferaly less than 5% water, and is kept in contact with the zeolite until the water content thereof is in equilibrium with that of the mixture. Particularly suitable conditions comprise about 121C. and 3.4 atmospheres. Washing stage (b) is suitably started at not above 93C. and is initially conducted by passing wash liquid upward through the zeolite until the hydrocarbon is substantially displaced, whereafter 1-25 vols./vol. wash liquid is passed downward through the zeolite; distilled or deionised water is preferably used. The effluent wash liquid is stripped, all but about 5% being recycled. In stage (c), a substantially dry hydrocarbon is passed downward through the zeolite, the effluent being separated into phases, the hydrocarbon phase being distilled once to remove an overhead mixture of water and hydrocarbons, and again to separate and return hydrocarbon to stage (c) until the zeolite has been contacted with 1-10 vols. hydrocarbon/vol., whereafter the bottom stream from the first distillation is returned to the zeolite bed without a second distillation until the water content of the effluent hydrocarbon is less than 1 % by weight. Stage (d) is preferably performed by raising the temperature of the bed by not more than 14C/ hour to 204-316C. while contacting the bed with the same hydrocarbon as that used in stage (c); if at any time the water content of the hydrogen effluent exceeds 1% by weight, further increase in temperature is delayed until it falls below this figure. The zeolite is held in contact with the hydrocarbon vapour 1-24 hours at the predetermined maximum drying temperature. Before the regeneration process is begun, the deactivated zeolite is preferably washed free from deactivating feedstock with butane, pentane or hexane. A suitable flow sheet is provided.
Patent GB-905041-A (GB)
Title: Improvements in or relating to methods of forming substantially hermetic seals
IPC: H01J5/28
Filed: 1958-12-18
Abstract: 905,041. Assembling force fits; welding by pressure. TELEFUNKEN G.m.b.H. Dec. 18, 1958 [Dec. 19, 1957], No. 40860/58. Class 83 (4). In forming an hermetic seal between two metal members 1, 2, one of which has a cylindrical portion having an annular flange 3 and the other of which is adapted to fit over the cylindrical portion so that its end can abut against the flange with a space between the inner edge of the end and the junction of the cylindrical portion and annular flange, ductile material 8 is provided between the end and the flange and the members are forced together to tend to cause the end to abut the flange and to compress the ductile material to cause it to flow and fill the space. A cylindrical metal sleeve 1 supporting a semi-conductor device (not shown) has an innular flange 3 and its end remote from the flange is bevelled at 4. The cylindrical cap 2, e.g. of German silver, has its open end bevelled at 6 at about 20 degrees and its internal diameter d 2  is slightly less than the external diameter d 1  of the sleeve 1. A flat ring 8 of tin or lead preferably coated with silicone grease is seated on the flange and the sleeve 1 is forced by a ram 9 into the cap held in a member 5. The ring is compressed and flows to fill the space 10 between the bevel 6 and the sleeve and also penetrates at 11 between the cylindrical surfaces of the parts.
Patent GB-1243531-A (GB)
Title: Inverter circuits
Inventor: NOWICKI JERZY RYSARD
IPC: H02M3/338
Filed: 1968-08-28
Abstract: 1,243,531. Transistor inverter oscillators. MULLARD Ltd. 28 Aug., 1968, No. 41052/68. Heading H3T. [Also in Division H2] An inverter circuit has a transformer T 1 , the primary winding NP of which is in series with the emitter-collector path of at ransistor TR 1 , and a secondary winding NS 1  of which is connected both to the base circuit of the transistor and to the load so that when the load is disconnected, the base circuit is open-circuited through the secondary winding. In Fig. 4 the transformer has two secondary windings NS 1 , NS 2  supplying a fluorescent lamp which when removed stops the oscillations, this protecting the transistor against over-voltages, as does diode D 1 . In Fig. 5 (not shown, the transistor is in a common collector configuration which enables the collector to be bolted straight down to a heat sink at earth potential.
Patent GB-1012906-A (GB)
Title: Improvements in or relating to tractors
Inventor: TRIPP LEONARD WILLIAM
IPC: B60K17/28
Filed: 1963-10-17
Abstract: 1,012,906. Tractor driving gear. ROADLESS TRACTION Ltd. Oct. 7, 1964 [Oct. 17, 1963], No. 41057/63. Heading B7H. Transmission gearing for converting a rearwheel drive tractor into a four-wheel drive tractor comprises a gear 7 keyed to gearbox output shaft 2 meshing with a gear 8 on cross-shaft 9, and a gear 15 on the cross-shaft meshing with gear 16 on transmission shaft 17 which drives a differential gear in the front axle housing through clutch 22 and shaft 23. Cross-shaft 9 passes through an aperture 10 in tractor housing 1, is supported in auxiliary casing 13 and may be arranged at an angle to both shaft 2 and the horizontal. Shaft 23 may include a telescopic joint and universal joints and variable speed means may be provided between gear-box output shaft 2 and shaft 17, together with an interlock to prevent engagement of clutch 22 unless the speeds of the front and rear wheels are in the correct relationship.
Patent GB-898947-A (GB)
Title: Improvements in and relating to x-ray apparatus
Inventor: BRYER ROBERT FRANK
IPC: H05G1/56
Filed: 1958-12-19
Abstract: 898,947. Supply systems for X-ray tubes. GENERAL ELECTRIC CO. Ltd. Dec. 8, 1959 [Dec. 19, 1958], No. 41059/58. Class 38 (4). In an X-ray apparatus which has the X-ray tube H.T. circuit switched, the circuit is arranged to be of constant impedance on load so that the X-ray tube 1 is operated at constant voltage. The tube has both anode and cathode ends switched by valves 4, 5 and is fed from H.T. generators 2, 3, having an equivalent output resistance and inductance of R2L2, R3L3 respectively each of which is shunted by external impedances R2C2, R3C3 giving the circuit a constant impedance characteristic so that the falling voltage of the generators is matched by the rising voltage of the circuit impedances. Diodes 6, 7 are provided to ensure that not more than half of the generator voltage is applied to either of the valves.
Patent GB-1182779-A (GB)
Title: Inhalation Device
Inventor: ALTOUNYAN ROGER EDWARD COLLING
IPC: A61M15/00
Filed: 1966-09-17
Abstract: 1,182,779. Pocket inhalers. FISONS PHARMACEUTICALS Ltd. 18 Aug., 1967 [17 Sept., 1966 (2)], Nos. 41594/66 and 41595/66. Heading A5T. A pocket inhaler comprises a housing 6, 7 with openings 8, 9 at both ends, a propellerlike device 4 which is rotatably mounted on a rigid shaft 2 within the housing and has means for supporting an inhalant container 5 and means for perforating the container. The parts 6, 7 of the housing are separable to permit insertion of a capsule 5 of finely divided medicament. Two or more piercing pins 24, 24a project into the housing and each is connected to a push button 21, 21a slidable against springs 23, 23a in projections 20, 20a to pierce the capsule prior to use. A constriction 10 to the passage of air is provided within the housing. As air is inhaled through the device, the propeller-like device 4 is rotated and vibrated to distribute the medicament issuing from the capsule. In an alternative construction, the piercing pins (32, Figure 2) are interconnected by a resilient bridge (26). On sliding a member (30) external to the housing, camlike projections (31) press the arms of the bridge towards one another and thus cause the pins to pierce the capsule.
Patent GB-1042359-A (GB)
Title: Photoionization detector for gases and vapors
IPC: H01J41/06
Filed: 1963-10-22
Abstract: 1,042,359. Discharge tubes. HITACHI SEISAKUSHO KABUSHIKI KAISHA. Oct. 22, 1963 [Oct. 24, 1962; March 29, 1963 (2)], No. 41672/63. Heading H1D. A photo ionization detector, e.g. for a gas chromatograph, has a discharge chamber 15 wherein a discharge between electrodes 19 and 19a excites the reference gas, e.g. helium, argon or hydrogen entering at 18 and the ultraviolet radiation produced passes through a hole in the plate 16 into the chamber 14 and excites an ionization current in the sample gas between the inlet tube 21 acting as an anode and a cathode 22. Both gas streams flow out at 23. The plate 16 may be charged to prevent ions or electrons from the discharge in chamber 15 entering the ionization chamber 14. The tube may be dismantled to adjust the electrodes 19, 19a or to replace the plate 16.
Patent GB-1081456-A (GB)
Title: Sealed switch contact unit
Inventor: LINDSAY WESLEY NEWTON
IPC: H01H50/04
Filed: 1965-10-01
Abstract: 1,081,456. Vacuum switches; electromagnetic relays. JENNINGS RADIO MANUFACTURING CORPORATION. Oct. 1, 1965, No. 41729/65. Heading H2B. A vacuum switch comprising a pair of fixed contacts 10, 11 bridgeable by a contact bridge 12, is supported by the ends of power cables 30, 31. Contacts 10, 11 are hermetically sealed in metal end plates 23, 24 secured to ceramic sections 4, 5 respectively. Ceramic sections 4, 5 are secured to an annular metal section 6 which houses the contact bridge 12. Bridge 12 is mounted on an insulating rod 13 carried by a spring-supported armature 14. An electromagnet outside the sealed enclosure and adjacent the armature controls the bridge. Instead of electromagnetic actuation, mechanical actuation via a flexible sealed bellows may be used. The co-operating contact surfaces of the bridge and fixed contacts are inclined at 45 degrees to the major axis of the switch. Cable cores 30, 31 are received in recesses 28, 29 of contact members 10, 11 respectively and retained by epoxy resin insulation 32.
Patent GB-1480107-A (GB)
Title: Computerised welding system
IPC: B23K11/25
Filed: 1974-06-07
Abstract: 1480107 Automatic control WELTRONIC CO 7 June 1974 [8 June 1973(2)] 41776/76 Divided out of 1480105 Heading G3N The subject matter of this Specification is identical with that described in the Parent Specifications but the claims are concerned with a computerized welding system comprising a plurality of welding heads, a first general purpose computer programmed to provide data storage and control functions for controlling various portions of the welding cycles of the welding heads, a second general purpose computer programmed to provide data storage and control functions identical with those of the first general purpose computer, said first computer being arranged to act as a master  computer and said second computer being arranged to act as a standby computer, a satellite control unit for providing communication between the computers and the welding heads, an interface unit for interfacing said first and second computers with the welding heads and said satellite control unit, said interface unit comprising means for transferring the master function from the first computer to the second computer in response to a pre-selected signal, and switch means which is selectively manually and automatically operable and adapted to provide a switching signal to select which of the computers is to act as a master.