baber/WOPTO huggingface dataset:
Patent GB-897865-A (GB)
Title: Improvements in or relating to variable inductances
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: H01F29/14
Filed: 1958-11-05
Abstract: 897,865. Electric transformers &c. GENERAL ELECTRIC CO. Ltd. Oct. 1, 1959 [Nov. 5, 1958], No. 35539/58. Addition to 713,028. Class 38 (2). In a saturable reactor such as forms the subject-matter of the parent Specification, the third harmonic content of the alternating current in the main winding is reduced substantially to zero over the working range by grading the reluctance of the further core 3 across its cross-section. The ring-shaped core 3 may be laminated and have wedge-shaped air gaps 4 as shown in Fig. 2, or may be made of powdered magnetic material such as ferrite, mixed with a binder and graded so that its permeability varies across the core crosssection. The cores 1 and 2 may be of wound magnetic strip, and the windings 8, 9, 10 may consist of oil-cooled bars 8a, 9a, 10a brazed to U-shaped external conductors 8b, 9b, 10b. Specification 897,864 also is referred to.
Patent GB-326140-A (GB)
Title: Automatic fire extinguishing sprinkler apparatus
IPC: A62C35/64
Filed: 1928-12-03
Abstract: 326,140. Woosnam, A., (Automatic Sprinkler Co. of America). Dec. 3, 1928. Alarms operated by expansion of gases and by movement of working parts in extinguishing apparatus.-An alarm in a sprinkler system is arranged to operate before the sprinkler heads open. The main valve 7, 7a is of the differential type, pressune above the valve 7 being established by means of a restricted byepass 9 which enters the water main 5 below the shut-off valve 6. The distributing pipes 1 have fusible heads 3 and are charged with air at atmosphere pressure. Also arranged in the protected area is a piping 19 kept at atmospheric pressure by a " bleeder " 21. The piping is provided with air bulbs 20, and leads to a diaphragm chamber 16. When the bulbs 20 are heated by a fire, before the sprinkler heads 3 open, the diaphragm is moved, causing a latch 15 to release a weighted lever 14. This then falls upon, and opens, a valve 10 normally held closed by a bellows or like resilient device 12, permitting water to escape from above the valve 7 so that the main valve opens. In falling, the lever 14 closes a switch 18 in the circuit of an alarm bell 17. Specification 327,435, [Class 47 (ii), Fire-extinguishing &c.] is referred to.
Patent GB-935530-A (GB)
Title: Pressurized hair waving composition
IPC: C09K3/30
Filed: 1959-10-20
Abstract: A composition for the cold permanent waving of hair comprises a substantially single phase aqueous solution of a keratin-reducing agent, a dissolved or liquefied normally gaseous propellant and a solvent for the propellant, pressurized in and adapted for discharge from a container as a foam which collapses to a liquid promptly after discharge, e.g. within 30 seconds after discharge. The composition preferably comprises as keratin-reducing agent a water soluble mercaptan containing up to 6 carbon atoms and in addition to the mercapto group a carboxyl, hydroxyl or amido functional group, in an amount equivalent to 1-10% by weight of the composition of this glycollic acid, as propellant monochlorodifluoromethane, dichlorodifluoromethane, trichloromonofluoromethane, dichlorotetrafluoroethane, difluoroethane, monochlorodifluoroethane or a mixture thereof, as solvent water or a mixture thereof with one or more alcohols containing up to 6 carbon atoms per molecule and an alkalizing agent which is a weak base having buffering capacity and a dissociation constant of less than 10-3, e.g. ammonia, monoethanolamine, diethanolamine, tris-(hydroxymethyl)-amino methane, 2-amino-2-methyl-1, 3-propane diol, triethanolamine and glycerylamine, or a mixture of a major proportion of the weak base and a minor proportion of a strong base, e.g. sodium, lithium and potassium hydroxides and tetramethyl ammonium hydroxide, to impart to the composition a pH above 7 but below 10.  The composition may also contain ammonium carbonate or bicarbonate, anionic or nonionic surface active agents numerous examples of which are given, sequestering agents, e.g. the sodium, potassium, p  ammonium and alkanol ammonium salts of ethylene diamine tetraacetic acid, soluble salts of the disulphide of thioglycollic acid and perfumes.  The compositions may be packaged in pressure tight metal cans or glass bottles coated on the outside with plastic and having a valve-controlled opening to a foam nozzle which may be fitted with a comb type applicator. The hair may be treated with the composition before or after winding into curls and may subsequently be rinsed and dried and, if desired, treated with a fixing solution, e.g. sodium perborate. Specification 748,411 is referred to.
Patent GB-1004461-A (GB)
Title: Electrophotographic materials and the production thereof
IPC: C07D405/14
Filed: 1961-10-04
Abstract: 2 - Hydroxy - 3 - benzoylmethyl - quinoxaline is prepared by refluxing the ethyl ester of benzoylpyruvic acid with o-phenylene diamine in the presence of acetic acid.  2:6 - Bis - phenyl - 3:7 - bis - (p - dimethylaminophenyl)-quinoxaline is prepared by refluxing p-dimethylamino benzoic acid and ammonium acetate in acetic acid.  Di - chryseno - [51,61:6,7] - [1111,1211:2,3]-quinoxaline is prepared by heating together chrysoquinone and ammonium formate.
Patent GB-1100620-A (GB)
Title: Electronic relay
IPC: H04L25/24
Filed: 1965-08-20
Abstract: 1,100,620. Transistor switching circuits. CREED & CO. Ltd. 20 Aug., 1965 [22 Aug., 1964], No. 35917/65. Heading H3T. In an electric pulse relay circuit when the amplitude of the input a exceeds a predetermined level stage 1 is caused to oscillate and when the amplitude of these output oscillations b reach a given value a monostable stage 2, which produces a pulse at c of longer duration than the period of the oscillator, is triggered to control a keying stage 3 arranged to supply D.C. to a load, such as a transistor T3 controlling the connection between telegraph wires 12, 13 for producing a pulse output at d. For an input telegraph signal a (Fig. 3, not shown), as long as the oscillations at b remain above the triggering value for the monostable circuit, pulses at c will continue to be produced until the end of the input signal. The input voltage at which T1 starts oscillating may be varied by resistor R2. A voltage dependent resistor R1 protects the oscillator 1 from overloading and diodes D1, D3 provide bias for transistors T2, T3. In a modified circuit (Fig. 2, not shown) an input signal a causes T1 to oscillate and trigger the monostable stage 2 which then starts to produce an output pulse c. The windings of a common coupling transformer are arranged so that the oscillations of the oscillator 1 are stopped until the end of the output pulse c at (t 4 , Fig. 3, not shown), when oscillations may start again to repeat the above operation. By suitable arrangement of the transformer windings the monostable circuit may either be triggered on the leading or trailing edge of the oscillator pulses. Two relay circuits may be arranged having their input connected in parallel (Fig. 4, not shown), so that input signals of opposite polarity operate one or the other circuit to switch a different pair of telegraph lines for double current working.
Patent GB-392272-A (GB)
Title: Improvements in or relating to electric supervisory signalling systems and apparatus therefor
IPC: H04M11/00
Filed: 1931-12-31
Abstract: 392,272. Induction relays. GRASEBY, R. C., Kingston By-Pass Road, New Malden, Surrey. Dec. 31, 1931, No. 36063. [Class 38 (v).] A delay-acting relay is operated by a Ferraris disc rotor 29 which drives a spindle 32 against the action of a spring 30 through gearing 31, 31A. The spindle carries a cam disc 33 having a pin 34 controlling spring contacts 28. Pins 36, 37 on the gear wheel 31A co-operate with a stop 38 to determine the extreme positions of the cam and the arrangement is such that during movement of the cam from one extreme position to the other, the contacts 28 are first closed and then opened. Specifications 367,433 and 388,530 are referred to.
Patent GB-1042186-A (GB)
Title: Improvements in apparatus for conditioning textile yarns
Inventor: DUFF FREDERICK
IPC: D06B1/00
Filed: 1963-09-13
Abstract: Cones, cheeses or other packages of textile yarn are placed on a pair of rotating rollers B or B1 (Figs. 1 and 2 not shown) to be rotated and conveyed beneath nozzles d1 and sprayed with conditioning liquid, e.g. water, wetting out agent or penetrating agent.  For cones or cheeses the rollers are parallel and cylindrical whereas for cylindrical packages they are inclined or tapered and may be driven at different speeds.  Idler rollers may be provided above the packages to exert a squeezing action thereon.  The amount of liquid sprayed may be regulated automatically or by hand.  After spraying the packages are placed in racks where conditioning continues.
Patent GB-1169196-A (GB)
Title: Improvements in Flower Holders
Inventor: FOSTER DAVID JOSEPH
IPC: A01G5/04
Filed: 1966-08-12
Abstract: 1,169,196. Flower holders; wreaths. D. J. FOSTER. 8 Aug., 1967 [12 Aug., 1966], No. 36158/66. Headings A4U and A4X. A flower holder or wreath base comprises spaced upper and lower support layers 11 of moulded expanded polystyrene secured together at edge regions 11a, pairs of apertures 2 to receive flower stems being formed, one aperture of each pair in each layer, by a barbed, bodkin-like tool pressed through the layers. A base 14 provides a chamber for moisture-retaining material 15, e.g. granules of foam plastics, into which the stems extend. In modifications, protubances on the support layers support outstanding sprays of flowers, the base is flat cardboard or is formed by a water-retaining dish of plastics or papier mache with a water resistant inner coating, the dish being round, oval, rectangular or annular in plan and having flanges for attachment to the support layers and a flat or indented bottom surface.
Patent GB-823164-A (GB)
Title: Improvements in or relating to optical pyrometers
IPC: G01J5/08
Filed: 1956-11-27
Abstract: 823,164. Pyrometers. PLATT, J. R. Aug. 15, 1957 [No,v. 27, 1956], No. 36174/56. Class 87(3) An optical pyrometer P is attached, as by an intermediate tube S, to a refractory tube T intended to be immersed in a liquid of unknown temperature. The tube T may be closed by a window V and screwthreaded into a plug at the end of the tube S. The latter may carry a shield A and a slidable tube O which may be clamped by a screw W and carries a projecting member R which may be rested on the rim of a crucible.
Patent GB-891713-A (GB)
Title: Improvements in or relating to blending or mixing devices for gases or liquids sufficiently fluid so as to be capable of being pumped
IPC: B01F5/06
Filed: 1957-11-22
Abstract: 891,713. Purifying saccharine liquids. SMART, S. G., and SUGAR MANUFACTURERS' SUPPLY CO. Ltd. Nov. 18, 1958 [Nov. 22, 1957], No. 36424/57. Class 127. [Also in Groups II and XII] A continuous mixing device for insertion in a fluid pipeline comprises a cylindrical casing 6 continuous with the pipeline and containing a cylindrical member 1 (which may be solid or hollow) having its end facing the flow of the main stream formed as a guide cone 2. The annular space between the cylinder 1 and casing 6 is composed of an equal number of left- and right-handed helical passages 9, which may be formed as tubes, or as channels in a solid body. The passages communicate at each intersection forming tortuous paths by which fluid may pass through the apparatus. Secondary liquids or gases to be admixed with the main stream are introduced at the apex 3 of the guide cone 2 as by tubes 4. Alternatively, secondary liquids or gases may be admitted by pipes 11 to the interior of the cone 2 which is then perforated to permit them to enter the main stream. A heat exchange medium may be circulated through the chamber 7<SP>1</SP> formed by the jacket 10 and through the chamber 7 formed in the cylinder 1 when hollow. There may be a number of parallel inlet tubes or channels 8, Fig. 3 (which represents a developed flat projection of the surface of cylinder 1) having mouths preferably shaped to minimize pressure build-up. The apparatus is primarily intended for the addition of milk of lime and clarifying agents to sugar juices; it may also be applied to distillation, liquid from liquid extraction, and gas scrubbing.
Patent GB-396278-A (GB)
Title: Improvements in pneumatic and electric conductors for use particularly in connectionwith milking machines
IPC: F16L11/127
Filed: 1932-12-23
Abstract: 396,278. Cables combined with tube structures; couplings. AKTIEBOLAGET SEPARATOR, 8, Fleminggatan, Stockholm. Dec., 23, 1932, No. 36442. Convention date, Dec. 28, 1931. Addition to 318,244, [Class 36, Electricity, Conducting &c.]. [Classes 36 and 38 (i).] In a combined pneumatic and electric conductor of the kind described in the parent Specification comprising a flexible tube having one or more electric conductors extending through channels in the wall of the tube and wherein the electric conductors have a length substantially greater than that of the channels, the slack in the electric conductors is provided by coiling them helically within the channels. The Figure shows helically coiled conductors F, G extending through channels H, K in a rubber tube A, the ends of the conductors extending through radial holes in the wall of the tube and making contact respectively with inner and outer contact sleeves D, E applied to the end of the tube. The sleeve E contacts with a ring B to which the conductor F is soldered. The inner sleeve D is slotted to increase its resiliency, the slots preferably being very narrow over a portion of their length C to prevent inward collapse of the sleeve. The conductors are inserted into the channels by winding them on a wire or like core which is then introduced into the channel, the core being finally withdrawn. The ends of the channels may be closed by rubber plugs L.
Patent GB-826363-A (GB)
Title: Retrocortin derivatives and their preparation
IPC: C07J5/00
Filed: 1955-12-20
Abstract: The invention comprises 21-desoxyretrocortin derivatives of the general formula <FORM:0826363/IV (b)/1> (wherein R is a keto or b -hydroxy group and Y is hydrogen or halogen), and a process for their preparation by reducing the corresponding 21-iodo derivative, preferably with hydrogen in the presence of a hydrogenation catalyst or with chromous chloride. Catalytic hydrogenation using e.g. platinum, nickel, palladium or their oxides, is preferably effected at room temperature in an alcohol solvent, while chromous chloride reduction is carried in aqueous acetone, preferably under carbon dioxide and the desoxy compound isolated by chloroform extraction. In examples: (1) 21-iodo-21-desoxy-retrocortin in ethanol is hydrogenated over palladium oxide, and residue after filtration and evaporation in vacuo chromatographed on alumina to yield 21-desoxy-retrocortin; (2) to (4) as in (1) are prepared 21-desoxyhydro-retrocortin, 9-fluoro-21-desoxyretrocortin and 9 - fluoro - 21 - desoxyhydroretrocortin from the corresponding 21 - iodo - 21 - desoxy compounds.  Specification 826,367 is referred to.
Patent GB-970928-A (GB)
Title: Improvements in or relating to smokers' lighters
IPC: B07C5/12
Filed: 1963-09-17
Abstract: 970,928. Smokers' lighters. ROWENTA METALLWARENFABRIK G.m.b.H. Sept. 17, 1963 [Oct. 23, 1962], No. 36527/63. Heading F4F. A petrol or butane lighter comprises an actuating lever 3 pivotally linked to a flame cap 4 by two spring-loaded studs 6, 7 which engage in apertures formed in the lever 3 and the cap 4. The studs 6, 7 are riveted to a leaf spring 5. The cap 4 is either embraced by the lever 3 as shown, or the arrangement is reversed. The leaf spring 5 may extend beyond the studs 6, 7 and form a pawl engaging a oneway detent device on a friction wheel. In another embodiment, Fig. 3 (not shown), the studs are urged apart by a compression spring disposed between them and inside a sleeve.
Patent GB-410248-A (GB)
Title: Improvements in or relating to the spindle apparatus of flyer frames
IPC: D01H7/20
Filed: 1932-12-28
Abstract: 410,248. Flyer spindle apparatus for roving, spinning, or like frames. ANGUS CO., Ltd., 3, Clive Row, Calcutta, and DOWNIE, J. C., Angus Post Office, Hooghly District, Bengal, both in India. Dec. 28, 1932, No. 36647. [Class 120 (ii).] In flyer spindle apparatus for roving, spinning or doubling frames of the kind in which the spindle rotates in a steadying tube about which the bobbin rotates, a reservoir or other continuous source of lubricant is provided adjacent the lower end of the steadying tube A, lubricant being caused to rise to the top of the tube, and a cap H extends from the tube to a point adjacent to the flyer boss. Lubricant is circulated through the tube by a screw-thread D on the spindle and passes between the top of the tube and the cap to the bobbin which is preferably provided with a metal liner. The spindle is provided with a second screw -thread G of opposite hand to the thread D and of less pitch to check the rise of the lubricant and to limit the flow. During operation the bobbin in passing the space between the tube and cap acts as a pump to withdraw lubricant The bobbin is carried by a drag disc J provided with engaging pins K, but when spinning light counts the disc J may be omitted. When applied to a gear-driven spindle such as that described in Specification 354,378, the lubricant is supplied from the gear box by splash. As shown, in a belt-driven spindle the lubricant is supplied through a slot T in a cupped sleeve S. A reservoir Q is provided to catch the lubricant when the spindle is stopped, leakage being prevented by a joint W and a screw-thread X preventing expulsion when running, the lubricant then being returned to the tube through a hole C. With these arrangements a bobbin 4¢" long and 2¥" in diameter may be used in place of the standard 4" traverse jute spinning bobbin without altering the flyer.
Patent GB-522802-A (GB)
Title: Improvements in or relating to folding ladders
IPC: E06C1/56
Filed: 1938-12-16
Abstract: 522,802. Flexible ladders. LONSDALE, P. Dec. 16, 1938, No. 36732. [Class 20 (ii)] A flexible ladder comprises U-shaped members formed of stout wire or strip provided with reversed helices 16 on the ends of the arms 10, so that when placed against the ends of the cross bar of an adjacent element and rotated relatively to each other, the members are engaged. The end portions of the helices are extended outwardly from the frames to form stops 14 which are engaged by the members 10 of the 'adjacent frames. The transverse members 11 of the frames which form the steps of the ladder are wound in helices to stiffen them and the helices in adjacent frames may be oppositely wound to interfix on collapse of the ladder.
Patent GB-1480768-A (GB)
Title: Conductive liquid level indicator
IPC: G01F23/26
Filed: 1974-08-21
Abstract: 1480768 Measuring liquid level electrically MINE SAFETY APPLIANCES CO 21 Aug 1974 [30 Aug 1973] 36746/74 Heading G1N(C) A conductive liquid level indicator comprises a series of identical coils 16-1 to 16-n and means 26, 28 for comparing the impedance of each coil to that of the next adjacent coil successively from one and of the series of coils to the other. The coils are mounted on a steel rod 18 and contained within a non-magnetic stainless steel tube 22 inserted from the top of the tank 10 containing liquid metal 12 to a level 14. The impedance comparing means may comprise a bridge circuit, Fig. 2 (not shown), and selector switches (40, 42) or two pole switches may be used to connect the coils in successive pairs, one coil in one arm of the bridge and the other in another arm.
Patent GB-1484636-A (GB)
Title: Selectively erasable optical memory system utilising a photoexcitable ferroelectric storage plate
IPC: G11C11/42
Filed: 1974-08-21
Abstract: 1484636 Electro-optic data storage THOMSON-CSF 21 Aug 1974 [21 Aug 1973] 36809/74 Heading H3B In a memory system employing a ferroelectric plate 21 whose bi-refringent refractive index varies as a quadratic function of applied electric field, recording is by selective illumination 8 in the presence of an in-plane bias field, selective erasure by re-illumination in the absence of bias and readout is by illumination from a source 15 via a polarizer 13 and analyser 20. Recording.-The plate is biased 5, 17, 18 by a field Ea, Fig. 2 to a point A where the refractive index change is # nA . At the same time control circuit 7 opens a shutter in optical system 8, 9, 10 to selectively illuminate the plate and generate an opposing photo-electric field Ee reducing the refractive index change to # nB . The residual field is E mo  in the illuminated areas and the recording process results in the coexistence of two birefringent states. Reading.-Overall illumination from a collimated source 15, 14 and polarizer 13 is directed 12 through the plate and the polarization rotation detected by analyser 20 for projection 22 on screen 25. A quarter-wave plate 19 may also be provided. A bias source 6 may be applied during readout to influence colour contrast if the source 15 is polychromatic. Selective erasure is in the absence of bias by reillumination sufficient to induce a photoelectric field Ee to cancel the residual E  mo . Bulk erasure is by total illumination or heating. Modifications.-The illumination energy during recording may be sufficient to completely cancel the bias field to produce a greater net refractive index change. Two recordings may be made successively on the sarne plate using different bias fields, e.g. of opposite polarities and a bias field used on readout which provides colour contrast between the two display images. Alternatively the same bias field may be used during recording but different illumination intensities or durations used to differentiate the recordings of different readout bias fields for the two recordings may be used so as to cancel the residual field of one and augment the other to effect selective readout of individual recordings. Ferroelectric plate is composed of a non-polar polycrystalline material with ion substitutions and may be a lead-lanthanium titano-zirconate. The bias field may be applied by interdigitated conductors defining discrete storage areas (Fig. 10, not shown).
Patent GB-1274546-A (GB)
Title: Improvements in or relating to shuttleless looms
Inventor: MASSARD JEAN CLAUDE
IPC: D03D35/00
Filed: 1969-07-23
Abstract: 1,274,546. Looms. J. C. MASSARD. 23 July, 1969 [23 July, 1968], No. 37161/69. Heading F2K. [Also in Division D1] In a loom, oscillation of a shaft 27, the beatup mechanism P and levers 17, 18, is obtained by identical eccentric mechanisms 38, 41, Fig. 8, and (58), Fig. 13 (not shown). Each mechanism comprises a fixed rotary member, e.g. 43, Fig. 10, in the mechanism 38, carrying a pin 44 engaging in an annular groove 45<SP>1</SP> in a member 45 secured to a lever pivoted at P<SP>1</SP>. Rotation of member 43 oscillates lever 46 with a motion having a large dwell period with rapid movement between such dwell periods.