baber/WOPTO huggingface dataset:
Patent GB-1348647-A (GB)
Title: Lasers
IPC: H01S3/094
Filed: 1971-05-14
Abstract: 1348647 Luminescent materials and uses thereof WESTERN ELECTRIC CO Inc 14 May 1971 [15 May 1970] 14949/71 Heading C4S [Also in Division H1] A dye-laser active medium comprises an exciplex, that is an excited complex formed by a reaction between two compounds, one of which is in an excited state. The compounds are chosen so that the peak of the emission spectrum of the exciplex is at least 500 Š away from the peak emission of the unreacted compounds, so that the active medium provides a wide tuning range. The active medium may be a liquid or an amorphous solid, and in use is disposed in a cavity having a tuning reflector such as a rotatable diffraction grating, an acousto-optic grating, or an array of filters. Excitation may be by conventional optical pumping, or by particle excitation, field induced collision or chemical reaction. Exciplex formation.-Three basic ways of making an exciplex are described. In the first, a reaction occurs between an electron acceptordonor pair, either or both of the pair in the unreacted form being suitable for excitation to a lasing state. Examples of acceptors are unsubstituted polycyclic aromatic hydrocarbons having 2-5 rings, such as naphthalene, anthracene, pyrene, biphenyl, chrysene, and 1,1,4,4-tetraphenyl butadiene. The donor is a tertiary amine which may be of the form X-N-Y 2  where Y is an alkyl group and X is phenyl or naphthyl, or of the form Y 2 N-Z-NY 2  where Y is alkyl and Z is aromatic. The second basic method uses excimer formation, which involves a reaction between excited and unexcited molecules of a single material. Pyrene and its monochloro derivatives are the only known materials suitable. The third basic method uses protonation, for example of an indole, or of compounds of the general type As an example, a 5 x 10<SP>-3</SP> molar solution of 4- methyl-umbelliferone in ethanol was acidified by adding 1 part in 10 of 1 molar HCl. Lasing was achieved over a range of 4590-5740 Š when pumped by a pulsed nitrogen laser. Various pumping devices are instanced and may include optical and particle excitation, field induced collisions and chemical reactions.
Patent GB-1389402-A (GB)
Title: Variable mark space ratio pulse controllers
IPC: H02P7/29
Filed: 1971-05-14
Abstract: 1389402 Control of D.C. motors SEVCON Ltd 12 May 1972 [14 May 1971] 14963/71 Heading H2J [Also in Division H3] A commutating circuit for a main thyristor 5 of a mark-space ratio controller (shown connected to a motor load 7, 8) comprises a commutating thyristor and capacitor circuit 15, 17 and a third thyristor 19 for reversing the charge on the commutating capacitor, the firing cycles of the commutating and which thyristors occurring automatically in response the triggering of the main thyristor. When first switching on the circuit shown, thyristor 15 is rendered momentarily conductive by gate current through the load and members 21, 25, 27 so that the capacitor charges. When the main thyristor is triggered and becomes conductive gate current via diode 29 renders 19 conductive and resonant reversal of the charge on capacitor 17 takes place through 21 and 5 whereupon 19 becomes non-conductive. Current now flows through inductor 21 and the gate of 15 into capacitor 17 causing thyristor 15 to conduct and extinguish the main thyristor. Switches 10, 12 reverse the connections of the field winding 8 to reverse the motor. Diodes 9 and 11 are for "plugging" and "freewheeling" and inductor 13 reduces the rate of size of current in 27. Resistor 31 and diode 29 in the gate circuit of 19 may be omitted (Fig. 2, not shown) and firing pulses obtained from a winding coupled to winding 21, a current from the latter being obtained from a resistor (39) in parallel with thyristor 19. Alternatively the firing pulses for 19 may be obtained from a winding coupled to the anode or cathode current path of the main thyristor (41, Fig. 3, not shown).
Patent GB-689538-A (GB)
Title: Improvements in or relating to electrical phase-sensitive apparatus
IPC: G01R19/14
Filed: 1951-06-25
Abstract: 689,538. Phase rotation determining. SANGAMO WESTON, Ltd. June 25,1951 [July 14, 1950], No. 15063/51. Class 37. To determine the phase rotation sequence of a supply, one terminal 1 is connected through reactive devices, e.g. condensers 14, 15, to the opposite terminals A, B of a modulator bridge 10, the other supply terminals 2, 3 are connected through resistances 11, 12 to the other terminals of the bridge, and a polarity sensitive device such as a centre-zero meter 16 or a relay, Fig. 3, not shown, is connected between AB. A condenser 13 may be connected between the terminals 2, 3. The direction of current between terminals AB depends on the phase rotation sequence.
Patent GB-237699-A (GB)
Title: Improvements in and relating to loud speakers and to electromagnetically vibrated diaphragms
IPC: H04R7/06
Filed: 1924-06-23
Abstract: 237,699. Vandervell, C. A. June 23, 1924. Sound - magnifying appliances. - The Provisional Specification describes loudspeaker trumpets, the uniformity of which is broken by longitudinal and transverse lines of another material such as solder or lead, the lines being inlaid or overlaid, as illustrated for a diaphragm.
Patent GB-1038210-A (GB)
Title: Improvements in or relating to tools for use with cylinder polishing machines
IPC: B24B33/08
Filed: 1965-04-09
Abstract: 1,038,210. Grinding. F. C. GOTZ, and E. T. ANON. April 9, 1965, No. 15182/65. Heading B3D. A tool of a cylinder polishing machine in which the tool moves vertically upwardly and downwardly as it is rotated comprises a hollow support 1 having apertures 2 in which are housed the arms 3 of members 4 supporting abrasive elements 5, and a screw-threaded spindle 6 which passes through cones housed in the support and bearing against the arms for displacing the elements, the or each of the cones being divided into a plurality of sectors 14, 18 by radial cuts disposed in planes which intersect the longitudinal axis of the cone, and each sector being adapted and arranged to exert outward radial pressure on an abrasive supporting arm independently of the other sectors. The upper part 7 of the spindle 6 is rectangular or polygonal while the lower end 8 is threaded and engages a disc-shaped member 9 which is prevented from rotating relative to the support 1 by a pin-and-slot arrangement 10, 11. The member 9 is also formed with a radiallyextending inverted T groove 13 engaged by a T-headed projection 17 extending from one of the sectors 14 of the lower cone, the sectors being resiliently retained together by a circlip 16. The sectors 18 of the upper cone are similar to those of the lower and are prevented from rotating relative to a disc-shaped member 23 by a T-headed projection 22 in a radially-extending groove in the member which is prevented from rotating relative to the support 1 by a pin-andslot arrangement 20, 21 and abuts a stop ring 24 on the spindle 6. A spring 26 urges the cones apart. Rotation of the spindle 6 varies the distance apart of the cones to adjust the radial extension of the abrasive elements, independent movement of the sectors permitting individual movement of the abrasive elements if one should wear more than the others.
Patent GB-291102-A (GB)
Title: Apparatus for drying paper or cardboard sleeves
IPC: D21F5/00
Filed: 1928-05-23
Abstract: 291,102. Major, C. May 28. 1927, [Convention date]. Rotary supports. - A drier for sleeves or tubes of paper or cardboard consists of a ring-shaped casing a heated by hot air into which the sleeves are fed at v automatically or by hand to move on pins or circular supports e on rotatable rings d. Rollers f, l and balls h support the rings d, which are rotated continuously or intermittently by cog wheels g. Several rings d with sleeve chambers e may be arranged outside or behind one another preferably concentrically so that they rotate together and are detachable. Hot air is forced in or sucked out by nozzles applied to apertures r. The chambers e are slotted at q and the rings when arranged together are pierced to facilitate air circulation. The sleeves are ejected by levers p. The casing a and lid b are made of heat insulating material or lined internally therewith and arranged horizontally or vertically. A chain drier may convey the sleeves from a winding machine to the ring drier.
Patent GB-1177104-A (GB)
Title: Bent Beam Pressure Gauge
Inventor: HELMER JOHN COLVILLE
IPC: H01J27/20
Filed: 1967-04-03
Abstract: 1,177,104. lonization manometers. VARIAN ASSOCIATES. 3 April, 1967 [4 April, 1966], No. 15215/67. Heading H1D. An ionization pressure gauge comprises a source 11 producing positively charged gas ions and X-rays, a collector 23 for said ions out of line of sight of ions emerging from the source and curved electrostatic deflecting means 21, 22 between the source and collector preventing X-rays reaching the collector; the difference in collector current when ions are deflected on to and away from the collector indicates the gas pressure. The source comprises a ribbon cathode 12 mounted externally of a cylindrical anode 13 both enclosed within a cylindrical shield 15 at cathode potential. A weak magnetic field between the cathode and anode is maintained by magnets 16, 17 to increase electron density within the grid. Positive ions produced by collisions between electrons and gas molecules are extracted through an earthed slit 18 which may be covered by a mesh and are deflected by spaced arcuate grids 21, 22 on to the collector 23 when outer grid 21 is earthed and inner grid 22 is connected to- 250 v. potential. Grid 22 can also be connected to a potential of - 20 v. which causes the ions to collect on grid 21 and suppresses secondary electron emission therefrom allowing measurement of collector current due to X-rays alone. Alternatively, grid 22 can be earthed and positive potentials applied to grid 21. A slit plate 26 with a mesh 27 across the slit at - 500 v. extends in front of the collector. Slit 18 and plate 26 serve as electrostatic shields between the source, deflection means and collector. The negative potential on plate 26 also prevents photo-electrons generated by X-rays leaving the collector. A vacuum tube voltmeter 29 is used to measure collector current.
Patent GB-703658-A (GB)
Title: Manufacture of organic phosphorus compounds having insecticidal properties
IPC: C07F9/24
Filed: 1951-06-27
Abstract: Organic phosphorus compounds are made by reacting a dialkylamino-dihalogen phosphoric oxide and a bis-(dialkylamino) halogen phosphoric oxide at a raised temperature in the presence of an inorganic alkaline condensing agent.  Major constituents of the mixture of products obtained are bis (bis dialkylamino) phosphorus anhydrides and triphosphoric pentadialkylamides. Alkali metal hydroxides e.g. those of sodium and potassium, and anhydrous potassium carbonate are mentioned as condensing agents. Advantageously water is removed from the reaction as formed, e.g. by the use of a water-entrainer such as toluene.  In Examples dimethylamino dichlorophosphoric oxide and bis (dimethylamino)-chloro-phosphoric oxide are reacted in the presence of (1) sodium hydroxide and toluene, (2) potassium hydroxide and toluene and (3) potassium hydroxide and carbon tetrachloride, water being removed by azeotropic distillation, to yield mixtures of bis (bisdimethylamino) phosphorus anhydride and triphosphoric pentadimethylamide.  The products have insecticidal properties.  Bis (dimethylamino)-chlorophosphoric oxide may be made by treating anhydrous dimethylamine with phosphorus oxychloride in an organic solvent.  Dimethylamino - dichlorophosphoric oxide is made by treating dimethylamine hydrochloride (a by-product in the production of the phosphoric oxide, with phosphorus oxychloride.
Patent GB-1375877-A (GB)
IPC: E04C2/20
Filed: 1972-04-04
Abstract: 1375877 Laminated glass fibre-foam panels DAWNPRESS Ltd 20 March 1973 [4 April 1972] 15320/72 Heading B5N Load bearing materials are made by assembling foam sheets a<SP>1</SP>, a<SP>2</SP> ... with glass fibre-resin sheets b<SP>1</SP>, b<SP>2</SP>..., allowing the resin to set, cutting the product, to form slices c<SP>1</SP>, c<SP>2</SP> ..., assembling the slices with glass fibre-resin sheets d<SP>1</SP>, d<SP>2</SP> ... and allowing the resin to set, whereby filled compartments 10 are formed. Panels are made from such material by assembling a core slice/formed by cutting along plates e<SP>1</SP>, e<SP>2</SP> ... between glass fibre-resin skins which may include a decorative rayon tissue or have mounted thereon an outer polypropylene sheet; the skins may be moulded on a release covered sheet. The glass fibre may be in mat form, the foam may be polyurethane or polyvinyl chloride, and the resin may be epoxy or polyester. Specified applications are foundations, storage tanks, food containers, cold room or vehicle flooring and wall supports.
Patent GB-1517435-A (GB)
Title: Process for treating hydrocarbons
IPC: C10G25/05
Filed: 1977-04-04
Abstract: 1517435 Removing polonium from hydrocarbons CARLESS CAPEL & LEONARD Ltd 4 April 1977 [14 April 1976] 15340/76 Heading C5E Polonium is removed from hydrocarbons by contact with a solid acidic material having a surface area of at least 5 m<SP>2</SP>/g. The hydrocarbons treated can be a natural gas condensate or a distillate boiling between 25‹C and 400‹C. The solid acidic materials referred to are activated charcoal (typical surface area 2000 m<SP>2</SP>/g), anhydrous copper sulphate (6 m<SP>2</SP>/g), acidic silica gel (500 m<SP>2</SP>/g), acid washed Fuller's Earth (130 m<SP>2</SP>/g); 5Š molecular sieve (15 m<SP>2</SP>/g) and activated titanium dioxide (15 m<SP>2</SP>/g) and can be used in a packed column. The acidity of the solid materials can be provided by treatment with acid, e.g. charcoal can be treated with hydrogen fluoride.
Patent GB-999347-A (GB)
Title: A method of and an installation for treating cement raw slurry
Inventor: SYLVEST KARL JENS
IPC: C04B7/40
Filed: 1963-04-18
Abstract: Cement raw slurry is converted into raw meal suitable for burning in rotary kiln by mechanically reducing the water content of the slurry to form a cake, e.g. by means of a filter press, continuously feeding this cake to, and disintegrating it in, a stream of hot gas from the kiln to form particles, the majority of which are carried away in the gas stream, and subsequently separating the heated, dried particles from the gas stream and feeding them to the kiln.  The particles not entrained by the gas may be either returned to the disintegrator or passed directly to the kiln.  The disintegrator may be in the form of rotating rods or hammers. Figures (not shown) illustrate several flow schemes and disintegrators.
Patent GB-828369-A (GB)
Title: Therapeutic compositions and process for preparation thereof
Filed: 1957-05-15
Abstract: A liquid pharmaceutical preparation comprises Vitamin B12, Vitamin C and a pharmaceutically acceptable form of iron in an aqueous vehicle comprising a substance selected from polyols containing at least five carbon atoms and no aldehyde or ketone group, or the anhydro derivatives thereof.  The iron is dissolved in the vehicle at a high temperature and Vitamins B12 and C added to the cooled solution. Specified pharmaceutically acceptable forms of iron are ferrous gluconate, sulphate, ammonium citrate, ferric ammonium citrate, glycerophosphate, peptonized iron and reduced iron.  Hormones, such as cortisone, hydrocortisone, prednisone, prednisolone, methyltestosterone, ethinylestradiol and thyroxine, vitamins, such as thiamine, riboflavin, niacin, folic acid and pyridoxine, and D-amphetamine sulphate, all of which may be dissolved in ethanol, and thickness, such as carboxymethyl cellulose, guar gum and gelatin, which may be dissolved in a lower polyol such as glycerol, and preservatives, such as paraben, sodium benzoate, sodium propionate, cetyl pyridinium chloride and benzalkonium chloride, may be added to the preparation, whose pH is adjusted to 4-5 by citric acid or sodium bicarbonate.
Patent GB-570008-A (GB)
Title: Improvements in electron tube frequency converters
IPC: H03D7/08
Filed: 1943-09-21
Abstract: 570,008. Superheterodyne circuits for wireless reception. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 21, 1943, No. 15453. Convention date, Sept. 25. 1942. [Class 40 (v)] In a frequency changer a back coupling is provided from the output circuit through the local oscillator circuit to'the input circuit so as to maintain the conversion conductance constant throughout the tuning range. The Figure shows an arrangement in which the aerial input circuit may be resonant to frequencies above the highest input frequency so that the attenuation will increase as the frequency is decreased. This is compensated by a regenerative coupling between the coils 14 and 17 of the local oscillator circuit and the primary 24 of the intermediate frequency transformer. The coupling may be effected by coaxially arranging the coils on a single former, Fig. 2 (not shown). The input circuit may be resonant to a frequency lower than the lowest input frequency in which case compensation is effected by a degenerative coupling. In a modification, Fig. 7 (not shown) a capacitive coupling between the output anode and the oscillator grid may be used and may be constituted by the inherent capacitance between the coils connected to the oscillator grid and the output anode respectively. Specification 466,415 is referred to.
Patent GB-485418-A (GB)
Title: Improvements in and relating to container packings
IPC: B65D5/52
Filed: 1937-06-04
Abstract: 485,418. Cigarette &c. containers. FROMM, J. June 4, 1937, No. 15527. Convention date, June 22, 1936. [Class 18] Cigarettes &c. are packed in a box 4 of cardboard, metal, &c., having a mouth ring 3 the rear wall of which is omitted so that a flexible apron 6, secured to the bottom and to the inside of the lid for the purpose of raising the contents, moves on the upper edge of wall 10 of the box. The apron may be carried over the whole rear side 8 of the lid and may constitute the hinge ; also the lid may have a cut-out covered by transparent material.
Patent GB-344296-A (GB)
Title: Method of securing potato peeler blade on wooden handle
IPC: A47J17/02
Filed: 1930-05-21
Abstract: 344,296. Tool-handle fixings. LAWTON, F., 106, Oswald Street, and BRIERLEY, F., 35, Oulder Hill Drive, Bamford, both in Rochdale. May 21, 1930, No. 15582. [Class 61 (i).] Clamping and toothed holding devices for socket fixings.-The blade A of a potato peeler is turned over at the corners D and secured in a grooved part F at the end of the handle C by means of a ferrule having a front flange cut away to receive the blade.
Patent GB-515151-A (GB)
Title: Improvements in or relating to pneumatically or hydraulically operated electric contactors
IPC: H01H33/30
Filed: 1938-05-25
Abstract: 515,151. Actuation of switches. WEST & CO., Ltd., A., JOHNSTON, C., and PADDOCK, W. J. May 25, 1938, No. 15594. [Class 38 (v)] A fluid pressure operated contactor comprises a fixed contact 2 carried by a bracket 17 mounted on an operating cylinder 1 made of synthetic resin. The movable contact 3 is carried on an arm 4 pivoted on a bracket 10 carried by the cylinder 1, and is actuated by fluid pressure admitted to the top of the cylinder and acting on a piston 6 of moulded rubber and piston rod 5, against the action of a return spring 7. The bracket 17 also carries arc horns 15 and a blowout coil 16. Specification 515,150 is referred to.
Patent GB-1316069-A (GB)
Title: Methods and pharmaceutical compositions for inhibiting gluconeo genesis
IPC: C07D213/79
Filed: 1972-04-05
Abstract: 1316069 Hypoglycemic composition SMITH KLINE & FRENCH LABORATORIES 5 April 1972 [6 April 1971] 15691/72 Heading A5B [Also in Division C2] A hypoglycemic composition consists of dosage units comprising (a) a compound of formula: where R is H, CH 3  or C 2 H 5 ; R 1  is H, acetyl, phenyl, benzyl or benzoyl and the SR 1  group is meta to the nitrogen atom and (b) a carrier. The active compound may be picolinic acid 3- thiol, methyl picolinate 3-thiol, 3-acetylthiopicolinic acid, 3-benzoylthiopicolinic acid or 3- phenylthiopicolinic acid. The composition may be packed in gelatin capsules.
Patent GB-807404-A (GB)
Title: Improvements in stub feeding arrangements in the manufacture of composite mouthpieces for cigarettes
IPC: A24D3/02
Filed: 1955-06-01
Abstract: 807,404. Rotary elevators. MOLINS, D. W., and MOLINS MACHINE CO. Ltd. May 28, 1956 [June 1, 1955], No. 15693/55. Class 78 (1). [Also in Group VI] Alternate pushers 6 of a stub-wheel 2 receive cigarette mouthpiece stubs respectively from an intermittently-rotated fluted drum 5 and from a further stub-wheel 1 receiving stubs from a fluted drum 4 and transferring them to the appropriate pushers 6 via a wheel 3, all the stubs being deposited by the wheel 2 at spaced intervals on a paper web P which, for the manufacture as in Specification 737,329, [Group VI], of cigarettes having hollow-ended mouthpieces, is adapted to be folded and secured round the stubs to form a mouthpiece rod for subsequent division centrally of the stubs into doublelength mouthpieces for use in a composite cigarette rod. Reference is also made to uniting finished mouthpieces with plain cigarettes or enclosing them, in endwise abutment with a tobacco section, in a cigarette wrapper. The pushers 7 of the wheel 3 are slotted to pass the pushers of the wheels 1, 2. Guides 8, 9, 10, the latter two acting to strip stubs from the wheels 1, 3, are provided.
Patent GB-823637-A (GB)
Title: Improvements in or relating to folding covers for vehicles
IPC: B60J11/00
Filed: 1958-05-16
Abstract: 823,637. Vehicle protective coverings. STOEHR, M. May 16, 1958, No. 15729/58. Class 108(1) A covering 1 preferably of transparent plastic is supported on two lazy-tongs linkages 2 interconnected by centrally pivoted arms 3 carrying extensions 7. The linkages 2 are secured at their ends to the front and rear of the vehicle to keep the covering off the bodywork. The supporting frame may comprise curved telescopic tubing or it may be tubular and inflatable.
Patent GB-1390598-A (GB)
Title: Anchor bolts
IPC: F16B13/08
Filed: 1973-04-02
Abstract: 1390598 Anchor bolts ILLINOIS TOOL WORKS Inc 2 April 1973 [3 April 1972] 15729/73 Heading F2H An anchor bolt 10 comprises a cylindrical shank 12 having a recess 18 with a planar surface inclined to the axis of the shank and a thin-walled resilient wedge 20 mounted in the recess, the wedge having a tab 28 extending from each side edge which partially encircle the shank within an annular depression 24 the wedge and tabs extending through more than 180 degrees around the axis so that the wedge is held captive on the shank before the bolt is used. The wedge 20 is preferably formed as an arcuate piece of sheet metal, e.g. resilient steel, whose edges 26 can slide on the inclined planar surface of the recess 28. As shown in Fig. 1, the tabs 28 are narrower than the depression 24 to allow such sliding. Alternatively (as in Figs. 7-13, not shown) the tabs may be frangibly connected to the wedge so that the wedge can slide in the recess only after the connection has been broken. The wedge may have a projection (38) to engage the wall of a hole in which the bolt is fitted.