baber/WOPTO huggingface dataset:
Patent GB-661537-A (GB)
Title: Improvements in and relating to the preparation of sulphonyl derivatives of piperazine
Filed: 1949-10-20
Abstract: Bis-sulphonyl-piperazines of the formula <FORM:0661537/IV (b)/1> where R is methyl or ethyl and n is 3-6 are prepared by reacting a bis-sulphonyl halide Hal-SO2-(CH2)n-SO2-Hal with a piperazine of the formula <FORM:0661537/IV (b)/2> "Hal" may be bromine or chlorine. Examples are given of the process, the reaction being carried out in an ethereal medium.  Bis-sulphonyl-halides. Hal-SO2-(CH2)n-SO2-Hal are obtained from dibromides Br-(CH2)n-Br by treatment with thiourea to give the dihydrobromide <FORM:0661537/IV (b)/3> conversion of this into the diacetate with potassium acetate and treatment of an aqueous solution of the latter with chlorine or bromine.  Examples are given.
Patent GB-287419-A (GB)
Title: Improvements in machines for the bleaching of fabric in an open state
IPC: D06B3/16
Filed: 1927-10-12
Abstract: 287,419. Taylor, C. Oct. 12, 1927. Passing materials through liquid-applying apparatus; piled materials, treating with liquids; spraying travelling materials. - Two or more, lengths of fabric are led separately to and through a vat 1 and are kept separate until they pass between a driven cylinder 2 and a number of pressure rollers 5 arranged concentrically therewith. Spray, jets 6, supplied by a pump 9 drawing from the vat, are provided between the pressure rollers. The lengths of fabric leave the cylinder together and are guided to separate bins 27, 28 in which they are piled by the oscillation of arms 38. After the fabrics have remained in the bins for a time guide rollers 61, 62 are swung down into the paths of the fabrics, the motor is reversed and the fabrics led back to other pilers 25, 26 on the other side of the vat, the fabrics being led separately to the cylinder and leaving it together.
Patent GB-1263543-A (GB)
Title: Improvements relating to brake plates in chutes
Inventor: MARTIN WALTER JOSEF
IPC: F23G5/44
Filed: 1969-05-29
Abstract: 1,263,543. Refuse shoots. W. J. MARTIN. 29 May, 1969 [30 May, 1968], No. 27278/69. Heading B8S. Refuse falls down a shoot 7 into an incinerator and its fall is retarded by plates 2 which are pivoted about points 8 and urged inwardly as shown.
Patent GB-1427523-A (GB)
Title: Float switches
IPC: G01F23/74
Filed: 1972-06-12
Abstract: 1427523 Magnetic, float operated, switches BESTOBELL MOBREY Ltd 6 June 1973 [12 June 1972] 27299/72 Heading H1N A magnet 28 on a float in a tubular housing 10 influences a magnetically responsive switch actuator lever 21 (Fig. 3) in a non-magnetic tubular casing 15 extending into the housing 10 from the side thereof. The lever 21 is pivoted at 22 on a microswitch 17 and has an arm 20 engaging the actuator pin 19 of the microswitch. In an alternative arrangement (Fig. 6) the switch actuator lever has a fixed pivot 37 on the microswitch 17A and has two parts 34, 33 pivotally interconnected at 35 and biased away from each other by a spring 36. When the float magnet 28 moves downward and the bias of the microswitch plunger 19A moves the lever assembly 34, 35, 36, 33 to the alternative switch condition restoration of the magnet 28 is insufficient to reattract the lever part 33 until it is moved downward by a biased reset button 38, 39. Depression of the button 38, 39 stresses spring 36, but does not move the part 34 to operate the microswitch which is not operated until the button 38, 39 is released. A manual testing lever (Fig. 2, not shown) may be arranged to act on the float.
Patent GB-193092-A (GB)
Title: Improvements in and relating to means for producing oscillations
IPC: H03B7/04
Filed: 1921-10-14
Abstract: 193,092. British Thomson - Houston Co., Ltd., (General Electric Co.). Oct. 14, 1921. Thermionic oscillation generators.- In a thermionic negative resistance device arranged for the production of oscillations in the manner described in Specification 103,865, the electrode which emits the secondary electrons or " dynatrons " is maintained at an average negative potential. The Figure shows an arrangement in which the load circuit 10 is coupled to the anode circuit of such a device. The anode 3 is maintained at a high positive potential, say between 300 and 1,000 volts, by a direct current source 5, whilst the electrode 4 which emits the secondary electrons is connected in the usual manner to an oscillatory circuit 6, 7, but is maintained at a negative potential by a battery 8. The production of oscillations is started by giving the electrode 4 a momentary positive charge. Specification 148,131 also is referred to.
Patent GB-611313-A (GB)
Title: Improvements in atomising nozzles
IPC: B05B1/34
Filed: 1945-10-18
Abstract: 611,313. Spraying-nozzles. PARKER, J. D. Oct. 18, 1945, No. 27408. [Class 69 (iii)] A horticultural spray nozzle B with a jet K has screwed within it an inner member A having a central fluid passage C joined by diametral holes D to a peripheral recess E, the fluid passing thence along grooves G which run tangentially into a recess H in the end of the inner member to produce a whirling motion. A central projection J guides the spray and a head is described for mounting a number of nozzles.
Patent GB-1094056-A (GB)
Title: Device for dispensing aerosol products in heated condition
IPC: A45D27/02
Filed: 1965-06-29
Abstract: 1,094,056. Dispensing liquids by gaseous pressure. CARTER-WALLACE Inc. June 29, 1965 [Aug. 21, 1964], No. 27408/65. Heading F1R. A device for heating the contents of an aerosoltype dispenser, e.g. shaving or shampoo lather, as they are dispensed, comprises a reservoir 16 for hot water securable with a snap fit on the container 10, and having an actuator 20 for opening the container valve, and a coiled heat-conductive tube 27 connecting the actuator passage 21 to a discharge valve 33. Reservoir 16 may be of plastics material and tube 27 of metal.
Patent GB-459389-A (GB)
Title: Improvements in and relating to electric inductances
IPC: H01F17/04
Filed: 1935-10-04
Abstract: 459,389. Inductances. TELEPHONE MANUFACTURING CO., Ltd., Martell Road, West Dulwich, and PADDLE, L. H., 92, Lancaster Road, West Norwood, both in London. Oct. 4, 1935, Nos. 27443/35 and 5624/36. [Class 37] An inductance for use in high-frequency circuits comprises a magnetic circuit of iron dust adaptec to receive a plurality of rods of magnetic materia the positions and lengths of which may be adjusted to determine the value of the inductance. Ir one form, Fig. 1, the winding 10 is carried or a hollow insulating former 11 into the interior of which a plurality of magnetic rods 16 are inserted The magnetic circuit is completed by annular magnetic members 13 at the ends of the coil and one or more cylindrical members 14 surrounding the coil. In an alternative form, Fig. 2, the winding 26 is arranged on a magnetic core 27 having a rectangular hole extending therethrough to receive magnetic rods, the magnetic circuit being completed by annular members 29 and cylinders 30 supported by an insulating casing 31. An aperture normally closed by a screw cap 33 gives access to the interior of the core 27 for inserting the adjusting rods which after adjustment by shortening &c. to give the required inductance value are secured in position by a sealing compound. A screen formed by a short-circuited coil of wire 23, Fig. 1, may be provided around the structure.
Patent GB-503618-A (GB)
Title: Improvements in devices for use in high frequency electrical circuits
IPC: H01G5/38
Filed: 1937-10-11
Abstract: 503,618. Condensers; transformers ; ball bearings. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Oct. 11, 1937, No. 27558. Convention date, Oct. 10, 1936. [Class 37] [Also in Groups XXXIV and XXXV] In variable elements of high-frequency, electric circuits the rotor spindle is of ceramic material and is mounted in a ball bearing of which both the fixed parts and the balls are of ceramic material. In the example shown, a condenser or variometer rotor 1a with coned ends 1b, is mounted on ceramic balls 2 running at one end in a race formed by a bore in the casing 3 and at the other in a race 4, flexibly upported by a disc 5 of glass &c.
Patent GB-1224945-A (GB)
Title: Character-indicating cathode-ray tube
IPC: H01J31/16
Filed: 1969-05-30
Abstract: 1,224,945. Cathode-ray display tubes. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 30 May, 1969 [30 May, 1968], No. 27615/69. Heading HID. A character-indicating cathode-ray tube comprising a fluorescent screen to which a selected electron beam passes through an associated stencil, is characterized in that there are twelve beam sources, one for each character to be displayed, arranged in two rows of six; preferably the characters are the ten digits together with a comma and a full-stop. There may be a common thermionic cathode for each row of characters and a control electrode for each character; this is followed by a common anode and a stencil electrode which shapes each beam to the required form.
Patent GB-1010995-A (GB)
Title: Distillation in raschig-phenol process
IPC: C07C39/04
Filed: 1962-07-18
Abstract: In a continuous process for the production of phenol by the oxychlorination of benzene in a first chlorination stage and a second hydrolysis stage, the products from each stage are separated and purified by passing a liquid organic phase containing part at least of the organic component of the chlorination reaction product and part at least of the organic component of the hydrolysis reaction product through a distillation train in which it is separated into a fraction consisting essentially of benzene, a fraction consisting essentially of monochlorobenzene, a fraction of an azeotrope-type mixture comprising phenol, the lower polychlorobenzenes and chlorophenols, and a fraction consisting essentially of phenol. The liquid organic phase, or organic mixed product, which is passed through the distillation train is preferably formed by condensing the gaseous chlorination product to form a liquid chlorination product, condensing the gaseous hydrolysis product to form a liquid hydrolysis product and mixing the two condensates to form a mixed product having an organic phase containing at least part of the organic component of each reaction product, and if the mixed product has an aqueous phase, separating it from the organic phase. The mixing of the liquid products of the two stages, which both contain an aqueous phase and an organic phase, to form the organic mixed product may be carried out in any sequence and partially or totally.  It is preferred, however, to use the condensed organic products of the chlorination stage for the purpose of extracting the phenol dissolved in the acid of the aqueous phase produced in the hydrolysis stage, and effecting the mixing operation.  This may be achieved by operating a cyclic process in which a mixed product aqueous phase is separated from the mixed product and is extracted with the organic phase of the liquid chlorination product to produce an aqueous phase, which is separated, and a phenol-containing organic phase which is mixed with the liquid hydrolysis product, and the aqueous phase of the mixed product is separated from the mixed product and recycled. Another method is to extract the phenol from the aqueous phase of the hydrolysis product with the organic phase of the chlorination product, and then to co-mingle the resultant phenol-containing organic chlorination product with the organic phase of the hydrolysis product to form an organic mixed product. Specification 1,010,994 is referred to.
Patent GB-1421957-A (GB)
Title: Anion exchange material
IPC: C02F1/42
Filed: 1973-06-11
Abstract: 1421957 Purifying water INSTITUT TEXTILE DE FRANCE 11 June 1973 [9 June 1972] 27649/73 Addition to 1286535 Heading C1C [Also in Division C3] Cellulose substituted by quaternary ammonium groups of the general formula wherein R, R<SP>1</SP> and R<SP>11</SP> are alkyl radicals (preferably methyl) having from 1 to 3 carbon atoms each X- is an anion and n a positive integer, may be used in powder form as an anion exchange material to remove contaminants from industrial waste water. In Example 1 sulphur black rinsing water is forced through a filter with a preliminary layer of substituted cellulose. In Example 2 a column of the cellulose is used to decolorize hydrone blue rinsing water. In Examples 3 and 4 water from a galvanoplastics plant is treated by passing through a filter of the cellulose to remove CN- and Cr 2 O 7 - ions respectively.
Patent GB-1042895-A (GB)
Title: Process for the preparation of alkylated dihydrocoumarins
IPC: C07D311/92
Filed: 1963-07-12
Abstract: Polyalkylated 3,4-dihydrocoumarins are made by reacting 3, 4-dihydrocoumarin with an alkylating agent which is an olefin, mono-hydroxy or dihydroxy alcohol or an ether at 0-80 DEG  C. in the presence of an acid alkylation catalyst which contains not more than 5% by weight of water and which is sulphuric, phosphoric or chlorosulphonic acid or an inert alkyl sulphonic or alkyl phosphonic acid, the resulting dihydrocoumarin being polyalkylated in the benzenoid ring.  Suitable alkylating agents are the 1-alkenes, straight-chain and cyclic alcohols and diols and straight-chain and cyclic ethers.  Numerous polyalkylated dihydrocoumarins which can be made by the present process are specified.  The compounds are useful as aroma chemicals (see Division A5). The examples relate to 6,8-di-t-butyl-, 6,8- and 5,7-diisopropyl-, 6,8-dicyclohexyl-, 6,8-dihexyl-, 6,8 - di - n - butyl and 5,6 - and 7,8 - [1,1,4,4 -tetramethyltetramethylene] - 3,4 - dihydrocoumarin.ALSO:Polyalkylated 3,4-dihydrocoumarins are used as aroma chemicals Diisopropyl-3, 4-dihydrocoumarin, for example, possesses a long lasting musk odour.  Example 8 describes a floral blend composed of diisopropyl-3, 4-dihydrocoumarin, retivert acetate, lingylacetate, hydroxycitronellal, phenylethyl alcohol, citronellol, linalool, methyl ionone gamma, benzyl alcohol, guaic acetate and a -amylcinnanic aldehyde.  Other blends containing two different polyalkylated -3, 4-dihydrocoumarins are specified.
Patent GB-1092263-A (GB)
Title: Improvements in or relating to injection nozzles for internal combustion engines and methods of making same
IPC: F02M61/14
Filed: 1965-06-30
Abstract: 1,092,263. Fuel injectors. HAILWOOD & ACKROYD Ltd. June 30, 1965 [July 6, 1964], No. 27671/65. Heading F1B. The axis 24 of the nozzle tip 30 of a fuel injector is inclined to the main axis 22 of the injector. As shown the injector is inclined to the cylinder axis 21 and the nozzle tip is curved so that the axis 26 of the end thereof is parallel to the cylinder axis. An outwardly opening fuel valve 31 is provided with a retraction piston 32 to prevent dribbling.
Patent GB-1423923-A (GB)
Title: Catalytic process for preparing polymers and copolymers of acrylonitrile
IPC: C08F/
Filed: 1974-06-21
Abstract: 1423923 Redox catalysts SOC ITALIANA RESINE SIR SpA 21 June 1974 [6 July 1973] 27781/74 Heading C3P Acrylonitrile is homo- or copolymerized in an aqueous medium at 40-70 C. with a catalytic system comprising hydrogen peroxide, a hydroxylamine mono- or disulphonate and a water-soluble salt of a variable valence metal, e.g. a ferrous salt. Preferably the hydroxylamine derivative used is an alkali metal salt of hydroxylamine mono- or disulphonic acid.
Patent GB-697516-A (GB)
Title: Improvements in or relating to insecticidal composition with a wheat dust carrier
Inventor: WAGNER GEORGE BERRIGE
IPC: A01N25/08
Filed: 1951-11-28
Abstract: An insecticidal composition comprises a minor percentage of an organic insecticide and a major proportion of a carrier consisting of wheat dust obtained during the cleaning process of wheat prior to milling, said dust passing a 100 mesh per linear inch screen and having a content of outer envelope of at least 25 per cent, a content of endosperm of at least 15 per cent, and a content of waxy material of at least 2 per cent.  Insecticides referred to are piperonyl butoxide, pyrethrum and rotenone.
Patent GB-784109-A (GB)
Title: Improvements in armoured vehicles
IPC: F41H5/26
Filed: 1955-09-30
Abstract: 784,109. Armoured vehicles EVEN, G. Sept. 30, 1955 [Oct. 12, 1954], No. 27932/55. Class 92 An armoured vehicle has a hood 4, Figs. 1; 2, with a cut-out forward portion 4a and a cover 2, having in plan the shape approximately that of a sector of a circle, is pivotally mounted in the hood on a vertical axis 3 so that in operative position it obturates the cut-out portion and in the retracted position is concealed under the solid portion of the hood. An opening is provided in the uper face of the armoured vehicle extending forwardly from the cut-out portion of the hood and hinged shutters 5, 6 are provided, shutter 5 being hinged on shutter 6 to fold inwardly of the vehicle, the shutter 6 being hinged on the upper face to fold outwardly together with the shutter 5 folded back on to it as shown in Fig. 2. A cup spring 13 on the pivot pin 3 of the cover 2 permits short vertical movements of the cover to break ice which may form along its peripheral edge and to take it out of jammed condition. Periscopes or episcopes 15 are provided on the cover 2 and sufficient space is left between the cover 2 and hood 4 to accommodate their protruding portions when the cover is in the retracted position.
Patent GB-494203-A (GB)
Title: Improvements in or relating to the manufacture of dental protheses or dentures from plastic materials
IPC: A61C13/00
Filed: 1937-10-14
Abstract: In the manufacture of dental protheses from plastic materials which are pressed between moulds, the negative impression taken from the mouth is covered with a metallic layer by electrolysis, and then filled with plaster which is allowed to harden.  When hard, the negative impression is then removed, leaving the metallic layer on the positive casting which forms one part of the mould.  The metal coating is about 0,3 mm. thick.  Suitable plastic materials include caoutchouc, artificial resin, celluloid or polymerization products, particularly transparent materials.ALSO:In the manufacture of dental protheses from plastic materials which are pressed between moulds, the negative impression taken from the mouth is covered with a metallic layer by electrolysis, and then filled with plaster which is allowed to harden.  When hard, the negative impression is removed, leaving the metallic layer in the positive casting which forms one part of the mould. Any hollow spaces in the negative impression, corresponding to existing teeth are filled with tin or amalgam, which is bonded to the metallic coating during electrolysis.  The metal coating is about 0,3 mm. thick.  Suitable plastic materials include caoutchouc, artificial resin, celluloid or polymerization products, particularly transparent materials.
Patent GB-1049357-A (GB)
Title: Improvements in or relating to telecommunication systems
Inventor: SWEET ANTHONY WILLIAM
IPC: H04M3/62
Filed: 1965-07-02
Abstract: 1,049,357. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. July 2, 1965, No. 28068/65. Heading H4K. In a circuit of an indicator giving the number of calls awaiting attention at an operator's position the resistance of one half of a potentiometer is varied in accordance with the actual number of calls awaiting attention and the other half varied in accordance with the number set in a counter controlling a visual display; the displayed number being maintained the same as the actual number by monitoring the potential of the mid-point and stepping the counter accordingly forwards or backwards to balance the two potentiometer halves. The potentiometer is formed from a first set of resistances, one of which is connected from negative potential to the mid-point as each new call arrives, and a second set, one of which is connected from earth to the mid-point for each unity increase in the counter. The midpoint is connected to the junction of the bases of a PNP and NPN transistor one of which is turned on to operate an associated relay according to the direction of the voltage excursion caused by the addition or removal of a call. The two relays step on or step back respectively the counter by unity for each operation.
Patent GB-1379199-A (GB)
Title: Floor sweeper with auxiliary surface litter brush means
IPC: A47L11/32
Filed: 1973-06-14
Abstract: 1379199 Floor and carpet sweepers; rotary brushes BISSELL Inc 14 June 1973 [22 June 1972] 28429/73 Headings A4F and A4K A floor or carpet sweeper has a frame mounted on wheels 5 and supporting main brushes 6, 7 extending transversely of the frame, and incorporates one and preferably two auxiliary annular brushes 26 mounted to sweep litter into the path of the main brushes, each auxiliary brush 26 being set in a member 22 keyed for rotation in a substantially horizontal plane with a shaft 14 which is driven by a wheel 19 mounted at 10-20 degrees to the horizontal so that its rim 20, e.g. a high friction polyurethane tyre, engages the floor or carpet and is driven thereby as the sweeper is moved. The member 22 is mounted on the shaft 14 with axial and radial play so that the brush 26 can tilt and float over irregularities in the surface of the floor or carpet. Preferably the tufts of the brush 26 are inclined downwards 10-20 degrees relative to a side wall 24 of the member 22. A flanged lip 25 on the member 22 prevents substantial deformation of the brush 26 should it dig into a carpet. The drive for the brushes 6, 7 may be such that they rotate in the same direction regardless of the direction of movement of the sweeper.
Patent GB-1437302-A (GB)
Title: Rotary shear assembly
IPC: B26D1/40
Filed: 1974-06-26
Abstract: 1437302 Cutting apparatus HARRISINTERTYPE CORP 26 June 1974 [26 June 1973] 28460/74 Heading B4B A rotary shear assembly comprises a rotary shear 12 and a stationary table 14 having a surface 38 for supporting a web which passes through the shear without being cut, the rotary shear including a selectively rotatable shear roll 24 driven in synchronism with the web feed, and a diverter 44 movable between one inoperative position in which it does not contact the web and a second operative position in which it diverts sheets cut from the web through an opening 40 in the table on to a conveyer 68. The shear roll 24 is provided with a blade 26 adapted to co-operate with an anvil roller 28 which may be made entirely of plastics material or of metal coated with plastics material. The anvil roller is rotated via gears 76, 78, 80, the gear 80 meshing with a gear 82 which rotates the shear roll via an electromagnetic clutch 84; the shear roll is maintained in an inoperative position by means of a brake 86. The diverter is moved between its two positions by means of a ram 64.