baber/WOPTO huggingface dataset:
Patent GB-1058880-A (GB)
Title: Cryogenic liquid storage apparatus
IPC: F17C13/00
Filed: 1965-12-24
Abstract: 1,058,880. Storing liquefied gases. UNION CARBIDE CORPORATION. Dec. 24, 1965 [Dec. 29, 1964], No. 54828/65. Heading F4P. [Also in Division F1] A double-walled heat insulated liquefied gas, e.g. helium, container 10, Fig. 1 (not shown), has connected to the outer portion 17 of a vapour conduit 15 extending from the inner vessel 11 and through the insulation 13 and neck 14 of the outer vessel 12 an external chamber 25 for damping thermally induced pressure oscillations set up by temperature differences between the inner and outer ends of fill and discharge ducts 18, 22; the volume of chamber 25 being greater than 5 c.c. and that of the outer vapour chamber portion 17 and being connected to said portion 17 by a flowrestricting conduit 24 having a length to inner diameter ratio of at least 52 to 1, an inner diameter of at least <SP>1</SP>/ 16 -inch and less than half the internal transverse length of the damper chamber 25. The gas discharge conduit 22 has a relief valve 20 and a bursting disc 21 upstream of: the outlet valve 23. The fill duet 18 may extend through the vapour conduit 15 to form a secondary vapour passage 27 connected by a flow restricting conduit 30 to a secondary damping chamber 31, having a vent valve 32 corresponding to a vent valve 26 on chamber 25. The heat insulation space is evacuated and is charged with alternate layers of paper and radiation-impervious aluminium foil. In a modification the secondary vapour relief path is dispensed with and a removable liquid transfer conduit assembly 35, Fig. 2 (not shown), is provided and is inserted through a wide-opening valve 36.
Patent GB-1136249-A (GB)
Title: Improvements in fluorescent lamps
Inventor: MENELLY RICHARD A
IPC: H01J61/067
Filed: 1965-12-28
Abstract: 1,136,249. Fluorescent discharge lamps. SYLVANIA ELECTRIC PRODUCTS Inc. 28 Dec., 1965, No. 54903/65. Heading H1D. A tubular braided wire directly heated electrode in a fluorescent lamp is protected from ion bombardment during the initial heating period by at least one additional conductive strand of lower resistance than the strands of the braid. The additional strand may be of different material than the strands of the braid or of the same material, e.g. tungsten, in a heavier gauge, and may be either woven into or coiled around the braid which may be either straight or coiled and is coated with emissive material. The braid may be manufactured on a molybdenum mandrel which is later dissolved out.
Patent GB-1165194-A (GB)
Title: Method of Developing Diazotype Compositions
IPC: G03C5/18
Filed: 1966-12-12
Abstract: 1,165,194. Photographic diazotype processes. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec.12, 1966 [Dec.29, 1965], No.55461/66. Addition to 1, 043, 836. Heading G2C. Latent images in diazotype materials which comprise a diazonium compound, an azo coupler and an excess of stabilizing acid (defined as sufficient quantity. of acid for ammonia development time of at least eight seconds using conventional equipment and materials at room temperature and pressure to achieve a density of 0À65) are developed by treating the material with anhydrous ammonia at above atmospheric pressure. The development techniques used are those set out in Specification 1, 043, 836. The materials used in the examples contain between 53À7% and 65% by weight of stabilizing acid (which may be citric, acetic or sulphosolicyic acid)
Patent GB-1483389-A (GB)
Title: Power amplifier capable of operating class a and class ab
IPC: H03F3/20
Filed: 1974-12-23
Abstract: 1483389 Transistor amplifiers MOTOROLA Inc 23 Dec 1974 [26 Dec 1973] 55573/74 Heading H3T A class AB amplifier, e.g. an integrated AF amplifier, which automatically switches to class A when the signal excursion in one direction crosses a threshold, comprises a driver 36, a bias network 59, a buffer 58, and output amplifiers 66, 62, adapted to be coupled to a load 70, and rendered more conductive by driving signals of respective opposite polarities, whereby when the signal having polarity such as to render 66 less conductive crosses a threshold the bias network 59 responds so as to render 62 inoperative and 66 operative in class A so that the load current through 66 may be driven to a low value, the buffer 58 acting to limit distortion consequential to the response of the bias circuit. In "(N+ 1)#" bias network 59, transistor 54 has a large beta and, if resistor 57 has N times the value of resistor 56, a voltage of (N+ 1)# is maintained across the network, where # is the base-emitter voltage of 54. A regulated potential connected to terminal 20 biases the bases of transistors 30, 40, which may be lateral transistors, and current mirror arrangements control the collector currents of transistors 38, 52. Transistors 38 and 44 are biased Class A and transistors 60, 62, 66 Class AB. Negative excursions of an input signal at 28 drive the base of 36 positive and render transistor 66 more conductive and transistors 60, 62 less conductive, producing positive excursions of the current in load resistor 70, and conversely. For operation by a single power supply connected to terminals 12, 16, load terminal 22 is linked to 16 via 24. In this case the negative excursions of the base of 36 may be large enough to cross the threshold (88), Fig. 2 (not shown), at which the voltage across bias circuit 59 ceases to be maintained. Then transistors 60, 62 are cut off, and the amplifier changes from Class AB to Class A operation. With a dual power supply, load terminal 22 is connected to ground and the amplifier is always Class AB, bias network 59 acting to reduce crossover distortion. If due to short circuit or overload the current in resistor 68 becomes excessive, transistor 72 conducts and short-circuits the drive to the base of transistor 36. Protection against a positive voltage overload at input 28 is provided by the constant current delivered by collector 42 of transistor 40. Transistor 46 conducts the portion of this current not demanded by 44 during operation.
Patent GB-1224337-A (GB)
Title: Gyromagnetic resonance apparatus
IPC: G01R33/389
Filed: 1968-11-22
Abstract: 1,224,337. Gyromagnetic resonance spectrometers. NIHON DENSHI K. K. Nov. 22, 1968 [Nov. 22, 1967; Feb.27, 1968; July 31, 1968; Aug. 31, 1968], No.55616/68. Heading G1N. In a gyromagnetic resonance spectrometer using the sideband technique and using both internal and external reference samples for field stabilization, the arrangement is such that when a first sample holder 4 containing the sample under investigation and the internal reference is in place in the resonance-exciting fields, a second sample holder 5 containing the external reference is outside at least one of the fields and when the first holder is removed, the second holder is brought into the resonance-exciting fields. The D.C. polarizing field is modulated by a sweep audio-frequency generated by an oscillator 8 for producing resonance in the sample under investigation and by an audio-frequency oscillator 9 for producing resonance in the reference sample. Tetramethyl silane is used for the internal reference and water containing a paramagnetic ion for the external reference, the frequency of oscillator 9 or the strength of the D.C. polarizing field being automatically changed to suit their different resonance characteristics. To change samples, a button 36, Fig.2, is pushed to release a spring 26 to push the second sample holder 5 into the R.F. coil 6. A micro-switch 37, Fig. 1, is actuated to cause selection of a different control voltage which is fed to the oscillator 9 via a damped oscillating circuit. A phase-sensitive detector 16 detects dispersion of the reference resonance signal to control the flux stabilizer 17. Another phase-sensitive detector 14 detects absorption of the investigated sample resonance signals which are recorded at 15. Modifications. The sample holders may be in different R.F. coils Figs. 11 and 12 (not shown) and a photo-electric arrangement may detect removal of the sample under investigation to control changing of the frequency of A.F.O. 9 or the strength of the D.C. polarizing field and connection of the external reference R.F. coil to the transmitter.
Patent GB-1377373-A (GB)
Title: Presentation of data
IPC: G09B29/00
Filed: 1971-12-01
Abstract: 1377373 Maps and diagrams H T FISHER 1 Dec 1971 [16 Dec 1970] 55778/71 Heading G5G A level of a characteristic is represented on a printed sheet by the use of one of the symbols shown. The symbols are spaced at 18 to 36 per inch. They are reproduced by computer printout; screens, tapes &c. Different coloured symbols and back-grounds may be used.
Patent GB-1502287-A (GB)
Title: Method for the treatment of polymer surfaces
IPC: B05D5/00
Filed: 1974-12-27
Abstract: 1502287 Anti-blocking coatings BOFORS AB 27 Dec 1974 [27 Dec 1973] 55928/74 Heading B2E  An article has on at least part of its surface a layer of a polymer applied: by dispersion coating, and on the polymer a layer of a composition comprising, a filler and a surfactant containing at least one hydrophylic group chosen from sulphate, sulphonate and phosphate and at least one C 6  to C 24  hydrophobic group chosen from alkyl, aryl and alkaryl, the surfactant as a whole not being adsorbed onto the polymer, but the hydrophobic groups being adsorbed thereon; the surfactant being in aqueous solution when applied. Suitable articles are made of paper, wood, wood fibre board, wood chip board, plywood, asbestos cement board, concrete, flooring materials and textiles. The polymer may be homo- or copolymers of acrylate, methacrylate, styrene, vinyl acetate, vinyl chloride, vinylidene chloride or butadiene monomers. 2-ethyl hehyl acrylate/methyl methacrylate and butyl acrylate/methyl methacrylate copolymers are exemplified. Suitable fillers are talc, chalk, plastics particles or water-soluble salts (e.g. sodium acetate). The composition may be thickened with colloidal silica or carboxymethyl cellulose.
Patent GB-1135110-A (GB)
Title: A multipart mould
IPC: B29C44/58
Filed: 1966-12-14
Abstract: 1,135,110. Multi-part mould. R. C. BUCHMANN. 14 Dec., 1966 [14 Dec., 1965], No. 56060/66. Heading B5A. A multipart mould comprises two frame members 1, 2, having co-operating edges 10, 11, which are offset when closed and may thus form a rebate in the moulded material, and two moulding plates 14, 15 movable within the frame members and locatable in any desired position. One of the co-operating edges preferably has a lipped portion overlapping the other edge so that the cavity 5 may be increased or reduced without escape of moulding material. The moulding plates 14, 15 are preferably hollow for the supply of heating or cooling medium through bore 4, and are movable by pistons 18, 19 for precompression or aftercompression of the material being moulded. Ejector rods 20, 21 may also be used.
Patent GB-1326915-A (GB)
Title: Perforated non-woven fabrics
IPC: D04H1/70
Filed: 1970-11-26
Abstract: 1326915 Perforated non - woven fabrics CARL FREUDENBERG 26 Nov 1970 [26 Nov 1969] 56272/70 Heading D1L Apparatus for producing a perforated non- woven fabric comprises an endless screen 1 passing around a system of rollers 2, 3, 4 and 5. A first duct 6, to which a slurry of fibres is continuously pumped with vigorous agitation leads up to the screen 1 and discharges onto the screen 1 over an area above a system of suction boxes 7. Water from the slurry is thus sucked through the screen 1 and a fleece is collected on the screen. The fleece is then carried upwards, on the screen 1, until it comes between a stencil 8 and the screen 1. The stencil 8 is cylindrical and rotates at a velocity such that the parts of the screen and stencil adjacent to one another move at the same speed in the same direction as one another. The stencil 8 rotates around a cylindrical duct 9 that extends across the width of the screen and that has an outlet slot 10, also extending across the width of the screen, leading from it and directed at right angles towards the screen. Water is forced into the duct 8 under pressure, emerges through the slot 9 and is divided into jets by the stencil 8. Removal of the water through the fleece is promoted by the suction box beneath the fleece at this position. The perforated fleece is then dried after leaving the screen. In a modification there may be two endless filtration screens, with a first duct discharging onto one screen and a second duct discharging onto the other. The slurry should be a very dilute suspension of fibres in water, e.g. 0.01 to 0.5% fibres by weight. Another fluid other than water used for making the perforations is an aqueous slurry of textile fibres. In order to stabilise the perforations and to strengthen the fleece it is generally necessary that the fleece should contain a binder which may be activated by heat, e.g. in the drying stage.
Patent GB-1486422-A (GB)
Title: Multi spindle lathes
IPC: B23B9/00
Filed: 1973-12-06
Abstract: 1486422 Multi-spindle lathes WICKMAN MACHINE TOOL SALES Ltd 28 Nov 1974 [6 Dec 1973] 56565/73 Heading B3T In a multi-spindle lathe in which a plurality of work spindles 16 are rotatably mounted in an indexable spindle drum 14, electromagnetic means are provided on each spindle to permit engagement and disengagement of the drive to the spindle, the electromagnetic means is incorporated in clutch and brake mechanisms on the spindle which are respectively connected to a source of electrical supply through wiring 26 extending through a drive tube 29 coaxial and indexable with the spindle drum 14 the tube carrying a rotary electrical distributer 27 which provides the electrical connection between the wiring and the supply source. The electromagnetic means in the clutch mechanism is mounted in a ring surrounding each respective spindle and secured to the spindle drum and is constituted by coils occupying axially positioned annular grooves in the rings.
Patent GB-1149099-A (GB)
Title: A strap device for a hand and wrist
Inventor: KLOSE ALFRED PAUL
IPC: A63B71/14
Filed: 1966-12-21
Abstract: 1,149,099. Hand and wrist protector. A. P. KLOSE. 21 Dec., 1966 [31 May, 1966], No. 57117/66. Heading A3V. [Also in Division E2] A hand and wrist protector, e.g. for use in sports, consists of a flexible strap-like body 60 which is wrapped around the hand and wrist and which has fastening means disposed at the back of the hand and wrist when in use. The protector is made from a blank of the shape shown in Fig. 13, the parts 64, 68 being sewn together to form a thumb hole 66 and may be made from leather or plastics material having a lining of soft material. The protector has two sets of touch and close fastenings 76, 80 and 84, 86. In use the thumb is placed through the opening 66 (Figs. 16, 17) and the tabs 78, 82 are wrapped around the back of the hand and are joined by the fasteners 76, 80. The strap portion is then wrapped around the wrist and is secured in position by the fasteners 84, 68. The palm portion may have non slip means such as a strip 88 including parallel rows of loops of rubber 90 or may include a pad of resilient material on the inner surface (not shown).
Patent GB-1283226-A (GB)
Title: Alkyl esters of 3,3-dimethyl-2-formyl-cyclopropane-1-carboxylic acid and dialkyl-ketals thereof
IPC: A01N53/00
Filed: 1969-07-14
Abstract: 1283226 Cyclopropane carboxylic acid derivatives ROUSSEL UCLAF 14 July 1969 [12 July 1968 (2)] 57342/71 Divided out of 1283225 Heading C2C The invention comprises compounds of the formula where R is a lower alkyl radical, and di-lower alkyl ketals thereof, wherein the lower alkyl groups contain 1-6 carbon atoms. The compounds are prepared by subjecting a compound of the formula to ozonolysis in the presence of a C 1-6  alkanol and reducing the product to produce the dialkyl ketal, which may be hydrolysed to the aldehyde.
Patent GB-1458022-A (GB)
Title: Electric circuit breakers printer control system
IPC: H01H73/26
Filed: 1973-12-12
Abstract: 1458022 Automatic circuit breakers FEDERAL PACIFIC ELECTRIC CO 12 Dec 1973 [22 Dec 1972] 57617/73 Heading H1N The movable contact arm 18 of a circuit breaker, Fig. 1, pivots on a transverse helical spring 20 to provide an overtravel feature and is pivotally connected at 36b between two side portions of the operating arm of a bell crank 36 having a single-sided latch arm portion 36a which is put into latching engagement with an armature 26 of thermal/electromagnetic trip means 22-28 to allow the contact arm 18 to be moved to the contact closed position by means of a lever 40 of a pivoted manual operator 38 which acts to erect and overset a toggle linkage 36, 50, 48 against the force of a spring 44. The two side portions of the operating arm of the bell crank 36 are unitarily bridged by a member 36b and are pivotally connected at 54 to side portions of the interconnecting link 50 which is similarly bridged by a member 50c and is pivotally coupled at 52 to a bridged member 48 (see Fig. 4) which is held in assembly to the fixed pivot 42 of the manual operator 38. The toggle linkage arrangement is such that adjacent parts have an interference-free fit within one another under all conditions of operation and the latch arm 26a can lie alongside the contact arm 18 when the circuit breaker is tripped and the handle held "ON", Fig. 2, thus providing for an unusually large opening travel of the contact arm 18 to a backstop 10b. An iron arc runner 56 and iron splitter plates 58 exercise arc control with hot gases being emitted through a wire mesh screen 60 dispersed across a vent 62. Arcuate beads 38c on the manual operator 38 are received in grooves in the walls of housing parts 10, 11 and act as hot gas barriers.
Patent GB-577251-A (GB)
Abstract: 577,251. Calculating - apparatus. BROIDO, D. April 20, 1944, No. 7352. [Class 106 (i)] A reversal mechanism for the revolutions register of a calculating-machine comprises a clutch 27 slidably keyed to the main driving shaft 22 between two gears 21, 26 having clutch parts coacting with the clutch, a member 34 extending radially from the clutch and adapted to coact with two stationary guides 35, 36 shaped so as to slide the clutch from a neutral into one or other of two extreme positions, and means 37 operated by the revolution-register clearing device for restoring the clutch to its neutral position. The first revolution of the main shaft 22 sets the machine for either multiplication (clockwise rotation-roller 34 engages sloping guide 35 and clutch is slid into engagement with gear 21 through which the revolutions register is driven in a positive manner) or division (anticlockwise rotation-roller 34 engages guide 36 and clutch engages gear 26 which, driving through an idler gear, again drives revolutions register in a positive manner). The end 44 of a manual setting lever engages in an annular groove 43, the knob of this lever indicating the position of the clutch. During the clearance of the revolutions register the striker plate 37 moves towards and engages the roller 34 and restores the clutch to its central position. Specification 566,942 is referred to.
Patent GB-1411249-A (GB)
Title: Epoxy compositions
IPC: C09D5/44
Filed: 1972-12-15
Abstract: 1411249 Water-dispersible ternary sulphonium epoxy resins PPG INDUSTRIES Inc 15 Dec 1972 [20 Dec 1971] 57915/72 Heading C3B Novel ungelled water-dispersible epoxy resins having in the resin molecule an average of more than one 1,2-epoxy group and at least 0.05% by weight of chemically bound sulphur, at least 1% of which is in the form of ternary sulphonium base salt groups, are prepared by reacting appropriate epoxy resins with organic sulphides in the presence of an acid, the sulphide reacting with available epoxy groups. The acid is preferably lactic acid and the final product also preferably contains oxyalkylene groups and chemically bound boron. The boron may be introduced simultaneously with the sulphur and preferably in the form of quaternary ammonium borate groups, while the oxyalkylene groups may be introduced by direct oxyalkylation of the epoxy resin starting material or by reaction with oxyalkylated monoalcohols. In Examples (1) a reaction product of "Epon 836 " (a diglycidyl ether of bisphenol A) and bisphenol A is reacted with polypropylene glycol and subsequently with thiodiethanol and lactic acid; (2) Epon is reacted with thiodiethanol and lactic acid; (3) a reaction product of Epon and a monobutylether of a polyalkylene glycol is reacted with thiodiethanol and boric acid; (4)Eponis reacted with thiodiethanol and phosphoric acid and the product subsequently reacted with a monobutyl ether of a polyalkylene glycol and (5) Epon is reacted with diethyl sulphide, lactic acid and a monobutyl ether of a polyalkylene glycol. Uses.-The resulting products may be diluted with water and optionally further compounded with a surfactant and/or ground with titanium oxide and carbon black to provide electrodeposition baths for coating panels of aluminium, steel or zinc phosphated steel.
Patent GB-1199309-A (GB)
Title: Improvements in/or relating to Processes for Manufacturing Manganese Dioxide, in particular for Electrochemical Cells, and the Manganese Dioxide Thus Obtained
IPC: C01G45/02
Filed: 1967-12-21
Abstract: 1,199,309. Manganese dioxide. SOC. LES PILES WONDER. 21 Dec., 1967 [23 Dec., 1966], No. 58230/67. Heading C1A. Manganese dioxide (MnO 1 . 5 -MnO 2 ) is manufactured by adding a manganese salt solution to an aqueous alkali metal or ammonium hydroxide solution at between 15 and 30 C. whilst bubbling an oxidizing gas through the solution. The product may be treated with an acid to give manganese dioxide having a degree of oxidation up to MnO 1 . 95 . The manganese salt may be manganese sulphate; the alkali metal hydroxide may be sodium or potassium hydroxide and the oxidizing gas may be air or oxygen. As illustrated in Fig. 1 (not shown) the gas is admitted to the reactor through a base made of sintered glass, sintered metal or sintered porcelain, or a screen of an artificial or natural textile having a very fine mesh and a stirrer is provided. The acids used may be sulphuric, nitric or acetic.
Patent GB-1429529-A (GB)
Title: Transport and storage package for a soft elastic foam material
IPC: B65D85/07
Filed: 1973-12-21
Abstract: 1429529 Packages KOEPP AG 21 Dec 1973 [27 Dec 1972] 59295/73 Heading B8C Blocks 9 of soft elastic foam are held sufficiently compressed between opposed pressureplates 4 so that there is no tendency for the central part of the package to break out laterally. The plates and blocks are compressed in a press and the plates are held together by encircling strips or wires or by laterally arranged rods 7 or ropes, bands, or chains. The rods 7 can be secured to reinforcing bars 10 on the plates by eyes or loops and hook- or button-like coacting elements. The rods may be adjustable in length. The bars may be offset relative to one another to avoid interengagement of the bars during stacking.