baber/WOPTO huggingface dataset:
Patent GB-917950-A (GB)
Title: Isomerization of halogen-substituted diphenyl oxides
Filed: 1960-09-28
Abstract: Meta-halo-substituted diphenyl oxides, particularly di-halo compounds, are obtained by isomerizing corresponding chlorine or bromine derivatives of diphenyl oxide or mixtures thereof by a heat treatment in the presence of a Friedel-Crafts catalyst but in the absence of a solvent, the temperature of the heat treatment being at least 10 DEG C. higher than the temperature usually employed for the chlorination or bromination of diphenyl oxide.  The heat treatment may be carried out separately and independently of the chlorination or bromination of diphenyl oxide, or it may be performed, at least in part, simultaneously with the halogenation. The temperature of the heat treatment may be as low as 170 DEG C., but it is preferably above 200 DEG C. and may be above 300 DEG C.  The heat treatment should preferably be continued for 1-6 hours or more.  The reaction may be carried out by mixing diphenyl oxide with aluminium chloride or bromide and halogenating with bromine or chlorine, in sufficient amount to produce the desired product, until evolution of hydrogen halide ceases.  In the two-step method, halogenation may be carried out at 30 DEG -100 DEG C. and the resulting halogenated diphenyl oxide is then heated to a temperature of 170-300 DEG C. or above to effect the isomerization. The mixture may then be cooled and washed. The oily residue is then fractionated to obtain mono- and di-halogenated diphenyl oxide fractions wherein 20-90% of the bromine or chlorine is in the meta position on the diphenyl oxide nucleus. For semi-continuous operation, diphenyl oxide is reacted with chlorine or bromine at 30-230 DEG C.; the resulting reaction mixture is heated to 170 DEG C-300 DEG C. or above, in presence of a Friedel-Crafts catalyst for 1-6 hours to effect molecular rearrangement of 20-90% of the reaction mixture to meta-substitution; the oily product is fractionated to recover fractions of mono-, and di-halo-diphenyl oxides containing 20-90% of meta-isomers; the high boiling fractions containing higher halogenated diphenyl-oxides are recycled to the molecular re-arrangement step, and the lower boiling fractions containing diphenyl oxide are returned to the halogenation step.  The isomerized halogen derivatives may be converted into the corresponding mono- or di-hydroxy diphenyl oxides.
Patent GB-1048816-A (GB)
Title: Fastenings
IPC: F16B37/04
Filed: 1963-08-22
Abstract: 1,048,816. Securing nuts to work; locking nuts. V. F. ZAHODIAKIN. Aug. 22, 1963 [May 27, 1963], No. 33324/63. Heading F2H. A sheet-metal nut 22, Fig. 2, or 42, Figs. 6, 7, is locked to a panel 20 or 43 by a spring 23 or 52 which is flexed to slide under lugs 41 or 56 formed at opposite sides of the nut. The spring 52 is of general diamond shape as shown with bent ends 55 for locating in notches 50 in the curved ends 49 of the nut 42 and in corresponding holes 51 in the panel 43. Two corners 46 of the nut 42 are retained in ears 47 on the panel 43. In the other embodiment, the spring 23 has ends with walls 39, 40, Figs. 2, 4, forming pockets which embrace two fingers 33, struck out of the panel 20 and overlying narrow ends 30 of the nut 22. This nut 22 is of a shape generally similar to that of the spring 23, Fig. 4, with the two ends 30 extending from a circular portion, Fig. 1 (not shown). The broken lines of Fig. 2 indicate the flexing of the spring 23 to slide under the nut lugs 41 until the end pockets 39, 40 are located. Both nuts 22, 42 have a central hole 25 with a helical edge 29 and a margin divided into resilient segments 28.
Patent GB-1523606-A (GB)
Title: Radioactive lightning conductor
IPC: H01T23/00
Filed: 1975-08-12
Abstract: 1523606 Lightning conductors B L DONELLI 12 Aug 1975 [13 Sept 1974] 33588/75 Heading H2C A radioactive lightning conductor has a radioactive substance (e.g. americium 241) within a container which prevents escape of the substance and which is within an ionization chamber 7 having an inlet for a gas source and an outlet 8 for ionized gas. The radioactive substance is preferably mounted on an insulator 3 within a labyrinthine chamber 7. The gas may be compressed air supplied by a fan or compressor only when the potential gradient is excessive.
Patent GB-1507903-A (GB)
Title: Mining equipment
IPC: E21C29/02
Filed: 1975-08-13
Abstract: 1507903 Mining machines COAL INDUSTRY (PATENTS) Ltd 23 July 1976 [13 Aug 1975] 33645/75 Heading E1F Equipment 30 for trapping or captivating a cutter - carrying, ranging - arm, mineral - mining machine to a guide 26 extending along one side of the machine along a mine face, said equipment including a bracket assembly securable to a ranging arm - support trunnion of the machine and comprising a first component 31 for attachment to the trunnion 10 and a second component 34 for so extending around the guide that in use of the equipment when the bracket assembly is mounted on the trunnion, the machine will be trapped or captivated, e.g. by pad 38 of component 34, to the guide 24, 25. Preferably the assembly is also adapted to help support the weight of the machine on the guide and for this purpose may be provided with at least one roller 36 for engaging the guide 25, 26.
Patent GB-486665-A (GB)
Title: Improvements in and relating to the treatment of air
IPC: A61L9/015
Filed: 1936-12-08
Abstract: Apparatus for treating air comprises an ozonizer combined with means for splitting up the ozone formed, so that the air leaving the apparatus is sterilized but free from ozone.  In the arrangement shown, air is drawn through an ozonizer 3 into a casing 1 fitted with baffles 7, and passed through a filter 9 to decompose the ozone formed.  The filter may comprise <PICT:0486665/III/1> silver oxide, manganese dioxide, lead peroxide or powdered glass, but is preferably oxidized silver gauze.  The inlet 4 is provided with a non-return valve 5.  In an alternative arrangement, the ozonizer is arranged inside a casing having porous walls coated with a layer of any of the materials specified.  Air from a room diffuses into the casing, and ozone diffuses outwards, being decomposed by the filtering material. The ozone may also be decomposed by passage over suitably coated surfaces.
Patent GB-1299030-A (GB)
Title: Electromagnetic pump for liquid metals
Inventor: RADCHENKO RUSLAN VASILIEVICH
IPC: H02K44/06
Filed: 1971-07-19
Abstract: 1299030 Pumps operating by electromagnetic interaction with fluids OTDEL FIZIKOTEKHNICHESKIKH PROBLEM ENERGETIKI URALSKOGO FILIALA AN SSSR 19 July 1971 33704/71 Heading H2A An electromagnetic pump for liquid metals comprises a substantially straight conduit 5 located in the clearance between the poles 7 of a multipole electromagnet 3 and the core of a polyphase transformer 1, the transformer having as many pairs of primary and secondary windings as there are poles on the electromagnet such that at each pole of the electromagnet a secondary winding of the transformer produces in the liquid metal in the conduit a current at right angles to the magnetic field so as to propel the metal along the conduit, each secondary winding being formed partly by a conductor 9 extending round the transformer core and partly by the liquid metal itself. The conductors 9 nearest the ends of the transformer core may be offset towards the ends, Fig. 3 (not shown) to reduce eddy current loss. Current leakage in the metal away from the regions where the current and field interact may be prevented by longitudinal partitions 10, Fig. 2 (not shown), disposed in the conduit.
Patent GB-336824-A (GB)
Title: Improvements in domestic fire-grates for burning coke and the like
IPC: F24B1/193
Filed: 1929-11-06
Abstract: 336,824. Turner, I. Nov. 6, 1929. Open fireplaces; grates; lighting fires; outlets to chimneys.-A coke-burning fireplace for fitting into a normal fireplace opening comprises a front frame d, preferably made to one of a number of standard heights and widths so that it will fit against the metal framing or surround of the ordinary firegrate front, together with a threepanel back portion preferably cast in one piece, and comprising a rear panel e<1> and side panels e<2> made somewhat smaller than the interior dimensions of the fireplace. In the construction shown, the back e<1> is forwardly curved at the top to clear the sloping back wall b, and is connected to an inclined flue plate e<4> carrying a flange f to which a length of flue-pipe f<1> is attached. The bottom grate comprises rearwardly sloping bars h and short inclined bars h<1> at the rear of them, with a space between the two sets for the discharge of ashes. The two sets of bars form an integral casting, having a flange h<2> supported on a ledge e'; alternatively, the grate may be supported on legs. A basket-like front grate l is removably held in position by hooks l<1> and projections d<3>, d<2>, which latter projections also support the bottom grate. A horizontal gas lighting-burner k is provided, which may be replaced by a burner k<4> supported on the rear of a separate front heater m of the kind described in Specification 278,115.
Patent GB-598163-A (GB)
Title: Improvements in or relating to variable pitch propeller systems for aircraft
IPC: B64C11/44
Filed: 1945-12-13
Abstract: 598,163. Variable-pitch propellers. FAIREY AVIATION CO., Ltd., and FORSYTH, A. G. Dec. 13, 1945, No. 33827. Convention date, Dec. 13, 1944. [Class 114] The movements between coarse and fine pitch in a propeller of the type disclosed in Specification 597,931 are carried out by electric motor at reduced voltage, whereas reverse and feathering movements are quickly made by the added effects of the motor at full voltage and of shaft-driven gearing clutched in electrically. The main governor 84 closes either switches 85 or 86 to bring in the motor 23, this being supplied at reduced voltage from the battery 83 through resistances 87, 89. Sudden engine speed changes operate auxiliary governor 16 to close switches 81, 82, thus short-circuiting resistances 87, 89 and thus giving quicker pitch changes. Limit switches 65, 66 control the extent of these movements. Feathering or reversing movements are initiated by the hand lever 92, bringing in the magnetic clutches 9,4, 98 to operate engine shaft driven gearing and also to bring full voltage on to the motor 23. Switches 95, 99 limit the movements. In a, modification, the reverse limit switch can be adjusted in flight.
Patent GB-1074886-A (GB)
Title: A method of and apparatus for obtaining a force in any direction from the forces of inertia of a rotating mass
IPC: B64B1/00
Filed: 1964-08-19
Abstract: 1,074,886. Propelling and retarding aircraft; propelling vehicles; propelling ships. A. DI BELLA. Aug. 19, 1964 [Aug. 30, 1963], No. 33966/64. Headings B7G, B7H and B7V. [Also in Division F2] A device for producing a force in a given direction comprises a mass whose centre of gravity is moved through a three-dimensional closed path. A mass 13 is connected to a shaft 9 which is mounted in a frame 4. The frame is rotated by a motor 1 which also rotates the shaft 9 through gears 14, 10. The resultant force is in the direction of the axis of the shaft 3 which provides a force to a mounting frame 2. The direction of the force may be varied by offsetting the mass 13 relative to the shaft 3. The device may be used to move a land or water vehicle or aircraft or for decelerating them.
Patent GB-1012403-A (GB)
Title: Improved cord grip for electrical connectors
IPC: H01R13/595
Filed: 1962-09-05
Abstract: 1,012,403. Two-part couplings. ARROW ELECTRIC SWITCHES Ltd. Sept. 5, 1962 [Sept. 19, 1961], No, 33978/62. Heading H2E. [Also in Division E2] An electric connector comprises an insulating body member 10 having a passageway 12 through it for a connector cord to be attached to contacts 14, and guide channels 15, 16 with parallel side walls extending oppositely from passageway 12, cord grips 22, 27 each having a foot 20, 25 slidable in one of channels 15, 16, each foot having parallel side edges slidably guided by the parallel channel walls, a cover member 30 secured on body member 10 covering the feet and maintaining them in channels 15, 16, and means on one of the members engaging each foot 20, 25 to limit their inward movement and prevent them from being removed from the channels while the cover member 30 is in place. The means comprise stops 31, 36 on cover member 30 engaging slots 21, 26 in feet 20, 25. Cover 30 is secured by body 10 by screws. Alternatively the stops may be on body 10, or the slots may be in cover 30 with stops on the end of the feet, the guide channels may be formed in the underside of the cover by deformation of the cover.
Patent GB-173681-A (GB)
Title: Improvements in or relating to trousers presses combined with chairs and the like
IPC: A47G25/72
Filed: 1920-12-01
Abstract: 173,681. Bond, V. C. Dec. 1, 1920. Trouser presses combined with chairs. The back c turns down on hinges d on to the seat b and serves as the lower member of a trouser press. The upper member comprises two boards h, i hinged together by double hinges or secured to cross-pieces j, k which engage bolts m, n mounted on the back c. The boards h, i and the back c are provided with cork inserts. When the device is in use as a chair the part of the back situated below the hinges d is held against the legs g by hook and eye fastenings e, f.
Patent GB-336129-A (GB)
Title: Process and apparatus for controlling the movable mold parts and the pressure piston of extrusion casting machines
IPC: B22D17/12
Filed: 1929-11-07
Abstract: 336,129. Haessler, P. Nov. 7, 1929. Pressure-producing. apparatus; presses, producing part of stroke of, by liquid at lower pressure.-The cylinders B<1>, B<2> of a press for casting metals, are connected to exhaust Wand to a pressure pump P through reversing valves S<1>, S<2> operated by hand. The pump supplies high, medium, and low pressure water, and a valve R between the high and the other supplies cuts these off automatically from the cylinder B' when the pressure therein rises owing to the stroke being completed. The medium- and lowpressure supplies are then available for the cylinder B<2>.
Patent GB-1481176-A (GB)
Title: Low-foam washing and cleansing agents
IPC: C11D3/00
Filed: 1974-08-02
Abstract: 1481176 Low-foam detergent compositions CHEMISCHE WERKE HULS AG 2 Aug 1974 [3 Aug 1973] 34147/74 Heading C5D A low-foam washing composition comprises one or more anionic, nonionic or zwitterionic detergent surfactants and, as foam-depressant, at least 5% to 40% by weight of one or more ethanolamine and/or diethanolamine compounds of the formulae: and wherein R 1 , R 2  and R 3  are the same or different C 5 -C 21  alkyl groups. The ethanolamine and/or diethanolamine compounds may be present in an amount of up to 50% by weight relative to the surfactants. R 1 , R 2  and R 3  may be derived from caprylic, lauric, myritic, palmitic or stearic acid.
Patent GB-943624-A (GB)
Title: Permeable plastic materials
Inventor: BAILEY DESMOND FRANK
IPC: C08J9/26
Filed: 1960-10-05
Abstract: A method of making a sintered body of permeable P.T.F.E comprises mixing P.T.F.E., which has not previously been subjected to a heat treatment above 327 DEG C., in powdered form with a powdered fugitive material which is capable of being removed from the mixture at temperatures below that at which the P.T.F.E. is sintered subjecting the powdered mixture to pressure to shape it to the form required, and subjecting the shaped form thus produced to heat treatment to sinter the P.T.F.E., the fugitive material being removed during or subsequent to the sintering process. The fugitive material can be one which is volatile and is removed during the sintering or one which is dissolved out from the sintered product.  Specified are polymethylmethacrylate, polystyrene, cellulose acetobutyrate, volatile salts, e.g. ammonium bicarbonate, and soluble salts.  In examples preforms are prepared by pressing in a mould mixtures of P.T.F.E. and (1) poly methyl methacrylate, (2) sodium chloride, (3) ammonium bicarbonate and (4) sodium chloride and poly methyl methacrylate.  Sintering is effected at 370 DEG C.  Sodium chloride is dissolved out of the product obtained in Examples (2) and (4).ALSO:A method of making a sintered body of permeable P.T.F.E suitable for use as filter materials comprises mixing P.T.F.E., which has not previously been subjected to a heat treatment above 327  DEG C. in powdered form with a powdered fugitive material which is capable of being removed from the mixture at temperatures below that at which the P.T.F.E. is sintered, subjecting the powdered mixture to pressure to shape it to the form required, and subjecting the shaped form thus produced to heat treatment to sinter the P.T.F.E., the fugitive material being removed during or subsequent to the sintering process.  The fugitive material can be one which is volatile and is removed during the sintering or one which is dissolved out from the sintered product. Specified are polymethylmethacrylate, polystyrene, cellulose acetobutyrate, volatile salts, e.g. ammonium bicarbonate, and soluble salts.  In examples preforms are prepared by pressing in a mould mixtures of P.T.F.E. and (1) poly methyl methacrylite, (2) sodium chloride, (3) ammonium bicarbonate and (4) sodium chloride and poly methyl methacrylate.  Sintering is effected at 370  DEG C. Sodium chloride is dissolved out of the product obtained in examples (2) and (4).  An attachment member for a filter element comprising shaped bodies of the material may consist of an integrally moulded peripheral ring of solid P.T.F.E. Alternatively the porous element may be sprayed over selected areas with a metal so as to build up an attachment member.
Patent GB-325543-A (GB)
Title: Improvements in loudspeakers
IPC: H04R9/02
Filed: 1928-11-21
Abstract: 325,543. Pollock, A. F., and Pollock, D. A. Nov. 21, 1928. Magnetic instruments; diaphragms. - In a moving coil loud-speaker, both moving coil and diaphragm are arranged to move angularly. The moving coil a, Fig. 1, is pivoted about an axis b, and extends between two like poles S of an electromagnet having an intermediate pole N of opposite polarity, so that the coil ends operate in separate pole-gaps. The vane-type diaphragm d is mounted on, and moves with the coil a and is framed by a baffle board f. In another construction, a plurality of coils a<1>, Fig. 2, connected in series, parallel, or series-parallel, actuates a single diaphragm d, the coil pivot being provided by torsion leads s. The coils a<1> may be in a common plane, as shown, or in angularly separate planes about a common axis, correspondingly disposed magnet poles being provided in the latter case.
Patent GB-373110-A (GB)
Title: Method of lining tube branches or the like with an inner protective coating
IPC: B28B21/94
Filed: 1930-11-13
Abstract: 373,110. Lining branched pipes with protective coatings. TRAUT, R., 67, Friedrichstrasse, M³lheim, Ruhr, Germany. Nov. 13, 1930, No. 34241. Convention date, Aug. 14. Void [Published under Sect. 91 of the Acts]. [Class 87 (ii).] Pipes provided with branch pieces are lined. with a protective coating by balancing the pipe about its main axis by counterpoises c of approximately the same weight and form as the branch pieces b, inserting a cover e in the branch piece and then rotating the tube about its main axis while coating material is delivered to the interior of the pipe. The coating material may be delivered before rotating the pipe. The counterpoises may be secured by straps d or by autogenous welding and the core e is held by a stirrup f and centred by a ring g which also serves as a confining ring for the lining in the branch.
Patent GB-874255-A (GB)
Title: Improvements in or relating to voltage-controlled transistor pulse generating circuits
Inventor: WARD JOHN JOSEPH
IPC: H03K3/284
Filed: 1958-10-27
Abstract: 874,255. Transistor pulse circuits. BUSH & RANK CINTEL Ltd. Oct. 26, 1959 [Oct. 27, 1958], No. 34304/58. Class 40(6) The invention relates to transistor pulse generating circuits of the type comprising two transistors with the collector of the first coupled to the base of the second and the collector of the second coupled through a capacitor to the base of the first whereby the application of a trigger pulse to the base of the second transistor renders the second transistor conducting for a time dependent upon the discharge time of the capacitor. According to the invention this period is controlled by providing for the capacitor a constant current charging circuit connected to the base of the first transistor and applying a control potential to a limiter circuit connected to the collector of the second transistor so as to determine the voltage to which the collector falls when the second transistor becomes conducting. Fig. 2 shows a first transistor 1 having its collector coupled to the base of a second transistor 5 which has its collector coupled through a timing capacitor 10 to the base of transistor 1. The application of a trigger pulse to terminal 13 causes the normally non-conducting transistor 5 to become conducting and the normally conducting transistor 1 to be cut off. The resulting potential fall at the collector of transistor 5 is transmitted to point A whereupon the capacitor commences to discharge under the control of a constant current network 9 until point A reaches a value at which transistor 1 again conducts and the circuit is restored to its original state. The duration of this discharge depends upon the magnitude of the fall of the collector voltage of transistor 5 when it becomes conducting and this is determined by a circuit 20, 11 which limits the fall to a value determined by potentiometer 22. A diode 25 prevents the base potential of transistor 1 being lowered to such a value that Zener diode action takes place between the base and emitter of the transistor. The constant current circuit may alternatively include a transistor of opposite conductivity type with the emitter connected to the positive supply terminal and the collector to point A.