baber/WOPTO huggingface dataset:
Patent GB-582454-A (GB)
Title: Improvements in and relating to systems of charging batteries
IPC: H02J7/04
Filed: 1944-04-20
Abstract: 582,454. Switch cases. CRYPTON EQUIPMENT, Ltd., SQUIRE, R., and WHELLER, A. G. April 20, 1944, No. 7338. [Class 38 (v)] [Also in Groups XXXV and XXXVI] In a system for charging leadacid batteries (see Group XXXV), from an A.C. supply through a rectifier, a high safe rate of charge is obtained by means of a thermostatic switch which is immersed in the electrolyte and opens to isolate the battery from the supply at a predetermined electrolyte temperature. The thermostat comprises a bi-metal device (not shown), hermetically sealed in a glass tube 1 which is surrounded by an acid-resisting sheath 2. A rubber absorption ring 3 secures the sealed tube in place. The end of the sheath is spun over a formed insulator 4 and sealed. The thermostat leads are brought out to connect to external leads through an axial hole in the formed insulator which carries a screw-threaded insulating grip 5. The grip is bored out to enable joining of the leads and is sealed by a cap 6. A cable-grip 7 is provided.
Patent GB-1460447-A (GB)
Title: Nuclear reactors
IPC: G21C17/032
Filed: 1973-02-15
Abstract: 1460447 Measuring flow-rate NUCLEAR POWER CO (WHETSTONE) Ltd 15 Feb 1974 [15 Feb 1973] 7450/73 Heading G1A [Also in Divisions G4-6]  The flow-rate of sodium in a fast reactor is monitored or measured using the current generated when beta-particles, resulting from the decay of Na-24 to Mg-24 by that decay mode which has a half-life of 20 milliseconds, are collected at a detector 23 disposed in the flow-path downstream of the reactor core 12. Any current generated in a lead 29 from the detector 23 to a differential amplifier 31, as a result of observation of betaparticles by the lead, is compensated by providing a dimming lead 30. The detector 23 has a sheath capable of absorbing beta-particles of energy up to 2 MeV resulting from an alternative decay mode so that substantially only relevant particles up to 6 MeV are detected. The gain of amplifier 31 is varied in dependence upon the output from an incore neutron flux detector 35.
Patent GB-593568-A (GB)
Title: Improvements in or relating to radio direction finders
IPC: G01S1/02
Filed: 1943-05-13
Abstract: 593,568. Radio direction-finding; valve circuits. O'BRIEN, W. J., and DECCA RADIO & TELEVISION, Ltd. May 13, 1943, No. 7670. [Class 40 (v)] In a direction-finding system in which the pickups of fixed angularlydisposed directive aerials are modulated at low frequencies which are displaced in phase by an amount corresponding to the angular displacement of the aerials, the direction of received signals is indicated on a stroboscopic indicator driven in synchronism with the low-frequency source and operated by pulses derived from the modulated currents. In the arrangement shown in Fig. 1, the pick-ups from the aerials 40, 41 are applied respectively in parallel to the grids of push-pull modulators 1, 2 and 6, 7, the screens of which are fed with phase-displaced low-frequency currents from source 44 via transformer 9 and circuit 8, 10 so designed that the potentials applied to the valves 1, 2 are in phase quadrature with those applied to valves 6, 7. The outputs from the valves 1, 2 and 6, 7 are combined in the circuit 3, amplified in the superheterodyne receiver 12 and rectified at 13, giving rise to a current E1, Fig. 3, whose phase depends upon the direction of the received waves and having a frequency equal to that of the L.F. supply. In order to derive sharp pulses for controlling the stroboscopic indicator, the output E1 from the detector 13 is led to amplifier 15 and tuned transformer 17, giving the waveform E2 having a frequency double that of the L.F. supply. This is rectified at 18 to give waveform E3 which is passed through transformer 20 giving waveform E4, which in turn is fed through a biassed valve 21 to give waveform I and through transformer 14 to give sharp surges E5, which are applied to the lower grid of the gas-discharge tube 48 illuminating. the stroboscopic indicator 50 driven from the source 44. Two surges E5 are produced in each cycle of the low-frequency current, and in order to indicate sense, as well as direction, alternate surges are eliminated by utilizing the output of a non-directional aerial 22. This is led to one grid of a dual-control valve 26, another grid of which is fed with part of the combined output from the modulators 1, 2 and 6, 7. The output of valve 26 passes through amplifier 27, rectifier 28, amplifier 29 and tuned transformer 30 to give a waveform E6, Fig. 5, of the modulating frequency. This is passed through an over-biassed valve 31 to give a waveform Eg2, Fig. 5, which is applied to the upper grid of the discharge tube 48. This tube flashes only when it receives both the potential Eg2 on one grid and Eg1 (#E5 of Fig. 2) on the other, thereby preventing alternate pulses E5 from affecting the stroboscope. A test oscillator 51 and various switches 32, 35, 36, &c. are provided for synchronizing and balancing the system.
Patent GB-742407-A (GB)
Title: Manufacture of light-sensitive photo-copying material
IPC: G03C1/61
Filed: 1953-03-19
Abstract: 742,407. Photographic diazotype and blueprint materials. KALLE & CO., AKT.-GES. March 19, 1953 [March 27, 1952], No. 7670/53. Class 98 (2). A dispersion of a finely-divided silicate of a metal of the second group of the periodic system produced by reaction in aqueous medium is applied to a porous support such as paper and dried, the light-sensitive substance being either included in the dispersion or applied afterwards. Six examples, providing full details of precipitation of the silicates from sodium silicate and the chloride of the metal concerned and application of the resulting dispersion to paper, specify the use of (1) calcium silicate followed by a blueprint preparation; (2) magnesium silicate followed by a diazotype preparation for blue copies, (3) zinc silicate, (4) magnesium silicate with inclusion in the dispersion of a watersoluble cellulose ether, gelatine, dextrin, polyvinyl alcohol or polyvinyl pyrrolidone or finelydivided water-insoluble synthetic resin followed by a diazotype preparation for brown copies, (5) magnesium silicate followed by a diazo preparation, (6) magnesium silicate with diazo and coupler included in the suspension. Finelydispersed silica may be included in any of the dispersions.
Patent GB-1481677-A (GB)
Title: Valve-gated injection moulding mechanism
IPC: B29C33/02
Filed: 1976-02-26
Abstract: 1481677 Valve gated injection moulds J U GELLERT 26 Feb 1976 [10 April 1975] 07718/76 Heading F2V [Also in Division B5] An injection moulding valve-gated mechanism comprises a pin 36 for sealing the gate 56 of a mould 16 when driven downwardly by an air piston 46 via a rocker arm 42, the pin and/or piston being non-rotatable with respect to the rocker arm. The upper end of the pin is provided with a pair of flats 76 (82, Fig. 2) which mate with a channel in the end 84 of the arm 42 and with a ridge for bearing against a wearresistant carbide pad 96 in the rocker arm end 84. The upper end of the piston 46 is provided with a pair of flats 106, (104, Fig. 2) which embrace the end 88 of the rocker arm 42 . Both the rocker arm and the piston are provided with carbide bearing surfaces i.e. 102, 100 respectively, the latter being formed by grinding a carbide pin inserted in the piston to form a bearing ridge 100. The arm 42 is pivoted within downwardly open slots 110 in the runner plate 24 and is maintained in the slots by the upwards force of the piston 46 or moulding material in the bore 34. The pin 36 passes through a heater plate 14 provided with a lower nose portion 32 spaced from the mould plate 20 by an insulating air space 70, flow of moulding material thereinto being prevented by a cylindrical titanium / aluminium / vanadium / steel alloy seal 72 having either a downwardly inclined bottom surface as shown or an inverted U- shaped bottom surface (Fig. 4, not shown). The pin 36 has an upper portion 38 and a lower, narrower portion 40 which may be formed of a material, e.g. beryllium/copper having a higher thermal conductivity than that of the portion 38, e.g. steel. The heater plate 14 is also provided with an insulating bushing 68, a circular heater 30 and a valve pin bush 62. The manifold runner plate 24 is spaced from the cooler mould backing plate 22 by a cylindrical spacer 66.
Patent GB-1326863-A (GB)
Title: Process for preparing a leather substitute having a nap or nubuck grain
IPC: D06N3/10
Filed: 1972-02-21
Abstract: 1326863 Non-woven fabrics; raising nap STATNI VYZKUMNY USTAV KOZEDELNY 21 Feb 1972 [30 April 1971] 7857/72 Headings D1R and D1S A suede (nap or nubuck) finish is -raised upon one surface of a fabric bonded with a heat-reactive latex and a carboxylated latex by buffing or combing. The fabric may comprise polyester fibres. Wool fibres or a mixture of polypropylene and collagen fibres. The exemplified latex comprises 60 parts by dry weight of butadieneacrylonitrile heat-reactive latex, 35 parts of carboxylated butadieneacrylonitrile latex, 5 parts heat-reactive polyacrylate latex, 10 parts polypropylene oil of molecular weight 800, 6 parts of an ammonium solution of maleic anhydride/styrene copolymer, 5 parts of urea-formaldehyde precondensate and a metal complex dyestuff. In example 5 the dyeing was effected after the bonding. The saturated fabric is dried at 60 to 135C, thereby cross-linking the resin. The dye is fixed by immersing the fabric in a chromium complex salt of stearic acid and then in hexamethylenetetramine. Excess water is pressed off, the fabric dried and a suede finish produced by buffing twice, the second buffing being at 180 to the first, or by the application of a textile combing machine.
Patent GB-126773-A (GB)
Title: Improvements in Apparatus for Subjecting Matter to the Action of Gases, or Vapours, more especially intended for use in Making Bleaching Powder.
IPC: C01B11/06
Filed: 1918-05-10
Abstract: 126,773. Rudge, A., and United Alkali Co. May 10, 1918. Chloride of lime. - Apparatus for treating solids with gases in counter-current, for instance for making chloride of lime, consists of a long cylinder 1 provided with lifters 2 in the form of bars carried on the inside of the cylinder with about an inch of clearance between, as shown at 3 in Fig. 3, and with cooling-means which mav consist of watersprays from a pipe 18 arranged over the whole or part of the tube. The lime is fed in from a hopper 7 by a conveyer 8 on a hollow shaft 9 through which the waste gas is withdrawn bv a fan 14<a>, and the product is withdrawn from a hopper 15 provided with double slides 16, 17, while the gas is admitted by a pipe 21 having a flexible connexion 22 upon which is a clip to constrict or cut off the gas inlet. The cylinder is rotated upon rollers 4, as shown. The whole or any part of the water spray can be cut off by valves 18<a>, 18<b>. Openings 19 are provided for inspection or sampling or for the reception of thermometers as at 20.
Patent GB-1141601-A (GB)
Title: Improvements relating to gas-cushion vehicles
Inventor: HUNT ROWLAND DELVILLE
IPC: B60V1/16
Filed: 1965-02-24
Abstract: 1,141,601. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. 15 Feb., 1966 [24 Feb., 1965], No. 7946/65. Heading B7K. An air cushion vehicle has an inflatable cushion-containing wall comprising upper and lower wall parts 6 and 7 respectively of flexible sheet material, the upper part 6 being attached at 17 to the vehicle body 4 so as to be capable of deflection relative to the body and the lower wall part being connected to the upper part so as to deflect therewith, the respective geometries of the two parts being such that components of the loading forces applied to each wall part by inflation pressure, as indicated by the arrows in Fig. 2, tend to deflect the upper part in an upward direction and the lower part in a downward direction, thereby maintaining the wall in an equilibrium position. As shown the upper part 6 when inflated has a substantially partcircular vertical cross-section of radius R and the lower wall 7 is formed by a series of contiguous elements 16 of transverse U-section, Fig. 4, each attached to part 6, and to the vehicle body at 15, the whole being capable of deflection as indicated by chain dotted lines in Fig. 2 in response to irregularities in the ground surface 2. The skirt may be inflated by cushion 3 or separate inflation means may be provided, which may additionally provide air for a peripheral air curtain (Fig. 11, not shown). Ties may be provided to limit the outward extension of the skirt and such ties may be inextensible (Figs. 6 and 8, not shown) or controllably extensible (Figs. 7 and 10, not shown), to vary the C.P. position.
Patent GB-435047-A (GB)
Title: Improvements in apparatus for washing dust from gases
IPC: B01D47/16
Filed: 1934-03-13
Abstract: 435,047. Washing gases. LARSEN, A., R÷rdal, Aalborg, Denmark. March 13, 1934, No. 7951. [Class 55 (ii)] Dust-laden gases are led through loose bodies 2 resting on the inner wall of a stationary drum 1 less than half filled with the bodies which comprise balls, rings, spirals or short pieces of iron, e.g. of T- or angle iron-section ; fixed transverse partitions 6 prevent the gases passing through the free space in the container without coming into contact with the bodies, which are agitated by stirrers 3 mounted on an axle 4 above the level of the bodies, and are kept moist by liquid added at the top and withdrawn by pipes 9. Gases may enter through perforated side walls 10 which restrain the bodies laterally, carry stirrers 11 and are rotated on a shaft 4. Two gas inlets 5 and a single outlet 7 may be provided or vice versa, and the bodies may be held in two separated groups. Cement raw slurry is used to moisten the bodies, which may be warmed by waste kiln gas. The gases are later treated with electrical dust separators, water jets or wetted baffles, water from which is collected and fed to the loose bodies.
Patent GB-625105-A (GB)
Title: Improved device for use in polishing articles
IPC: B24B31/00
Filed: 1946-03-15
Abstract: 625,105. Polishing. WOLVERHAMPTON DIE-CASTING CO., Ltd., and WHITEHEAD, E. G. March 15, 1946, No. 8042. [Class 60] A process for polishing articles consists in mounting the articles 24 on a carrier 21 within a drum 15, placing small pieces of yielding material and polishing material within the drum, rotating the drum at a speed high enough to cause some of the material to pack on the inner periphery of the drum by centrifugal force while other pellets of the material are caught between the said packed material and the articles, whereby to polish the articles. The carrier, which is stationary, includes a shaft 20, extending into the drum through a removable cover 29, and having radial arms 22 secured thereto which carry the articles 24 to be polished. The inner periphery of the drum may be lined with yielding material. The apparatus may be used horizontally or vertically or in intermediate positions. The Provisional Specification states that both the drum and the carrier may rotate.
Patent GB-1083371-A (GB)
Title: Reversible valve mechanism
Inventor: CORR LEONARD EDWARD BENJAMIN
IPC: F23D14/46
Filed: 1963-02-28
Abstract: 1,083,371. Valves. BRITISH OXYGEN CO. Ltd. March 4, 1964 [Feb. 28, 1963], No. 8051/63. Heading F2V. A valve suitable for controlling the flow of cutting oxygen in a flame-cutting torch, comprises a closure member 10 biased to close an orifice 5 by a spring 9. The valve is opened by depressing a plunger 12 to permit an extension 14 of auxiliary plunger 13 to unseat member 10. The projection may alternatively be on plunger 12 or member 10. Metering of the gas flow is achieved by member 10 co-operating with inlet port 6 and plunger 13 co-operating with outlet port 7. The member 10 and plunger 13 may be interchanged so that the valve is biased by the spring 9 to an open position.
Patent GB-228034-A (GB)
Title: Improvements relating to gear cutting machines
IPC: B23F23/12
Filed: 1924-04-01
Abstract: 228,034. Fornaca, G. April 1, 1924. Gear-cutting. - In a gear-cutting machine, a reciprocating pinion-cutter 1 is adapted to operate simultaneously on a number of radiallyarranged blanks 2, the blanks and cutter being rotated in unison to generate the teeth. As shown diagrammatically in Fig. 1, the cutter is reciprocated through a lever 4 from an adjustable crank-disc 6 on a driving-shaft 7 and is simultaneously rotated through change gears 10, shafts 11, 11<1> and worm gearing. The shaft 11 is connected through further change gears 12 and shafts 13 - - 18 to a spindle 19 supporting one of the blanks 2. The blanks 2<1>, 2<11> are similarly driven through gearing from the shaft 15. If the gears to be cut are of different sizes, their correct relative speeds may be obtained by means of change gears in the driving trains. The blanks are withdrawn from the cutter on the non-cutting strokes and are also fed radially until the desired tooth depth is attained. The depth feed is effected by cams 22 driven from a countershaft 20 and acting through rollers 35 in contact with the relieving cams 25 which are mounted on levers 24 connected to the blank spindles and are driven synchronously with the cutter bv gearing from a countershaft 30. In Figs. 8 and 9 each blank is mounted in a holder 103 on a radial slide 102 and is rotated through globoid gearing 106. The depth feed cam 117 coacts with a rocker 116 and a double eccentric 114 mounted in a spring-pressed lever 111 connected to the blank slide, the double eccentric being driven from a vertical shaft 112 to give the relieving movement. The depth cam, which rotates at a slightly lower speed than the blank, is arranged to feed the blank to depth after approximately a. quarter of a revolution, and when all the teeth are cut the depth cam completes one revolution and the rocker 116 moves on to the lower portion of the cam to withdraw the gears from the cutter. The blank-slides may then be re-adjusted and a finishing cut taken.
Patent GB-287459-A (GB)
Title: Improvements in or relating to radio transmitting systems
IPC: H03C3/28
Filed: 1928-03-19
Abstract: 287,459. Westinghouse Electric & Manufacturing Co., (Assignees of Conrad, F.). March 17, 1927, [Convention date]. Modulating systems and apparatus; piezo-electric crystal units. - The frequency of a carrier wave in a radio-transmitting system is smoothly and continuously varied in accordance with sound or other signal vibrations, by means of a piezo-electric crystal having one electrode formed as the diaphragm of an electromagnet carrying the signal current. Fig. 1 shows the transmitting-circuit employed, Fig. 2 the piezo-electric modulator, and Fig. 4 a diagram explaining the receiving operation. The circuit of a microphone 1 is coupled to a valve amplifier 6 which has in its plate circuit an electromagnet 17 arranged to vibrate a diaphragm 24. The piezoelectric crystal 25 is mounted between a fixed electrode 26 and the diaphragm electrode 24, and is connected in the grid circuit of a generating valve 18 so as to regulate and to vary its frequency. The output from the oscillator valve 18 passes through a frequency-multiplier 34 and power amplifier 35, and energizes the aerial through an inductance coil 36. The crystal modulator, Fig. 2, is enclosed in an insulating cup 76 and cover 78. The diaphragm 24 is stretched across an opening in a disc 51, and is clamped between screwed rings 61, 62. It is tensioned by a further screwed ring 63 and is damped by a felt washer 65 or by other means. The crystal 25 is supported adjacent to the diaphragm on a metal plate 26 adjustable by a screw 53. A magnet 72 is supported by an arm 71 and has its pole-pieces 73, 74 situated immediately above the diaphragm, surrounded by energizing coils 75 carrying the signal current. At the receiving station the set is adjusted slightly off resonance with the mean frequency, so as to work on the slope of the resonance curve of the receiver. As indicated in Fig. 4, two differently-tuned receivers may be adjusted to work at the position S on opposite sides of their resonance peaks. The outputs from the receivers are connected in opposition. Frequency-changing receivers may be employed. The frequencymodulation system is highly selective, and has the advantage that it can operate with a narrow band in the frequency spectrum, compared with the usual amplitude-modulation systems. It may be employed in high-speed radio telegraphy. Specification 275,581 is referred to.
Patent GB-1243937-A (GB)
Title: Bath for the electrolytic stripping of metal coatings from bases of steel
IPC: C25F5/00
Filed: 1970-02-20
Abstract: 1,243,937. Electrolytic stripping of metal coatings. BERGISCHE METALLWARENFABRIK DILLENBERG & Co., K.G. Feb. 20, 1970 [Feb. 21, 1969; Dec.18, 1969], No. 8353/70. Heading C7B. A bath for electrolytically stripping metal coatings from a steel base comprises an alkali metal nitrate, ammonium nitrate or an amine and nitric acid; a salt of an organic acid, e.g. ammonium acetate, or a neutralization product of an amine, e.g. ethylene diamine or triethanolamine, and an organic acid to buffer the bath to a pH of 5-7; and either (a) for stripping coatings from stainless steel, a water-soluble chlorine compound and/or thiocyanate in an amount of 0À5 to 10 g/l, e.g. ammonium chloride, sodium hypochlorite or ammonium thiocyanate, or (b) for stripping coatings from hardened or nitrided steel, 0À2 - 30 g/l of an aromatic hydrocarbon compound with hydroxyl groups bonded directly to the benzene nucleus, e.g. phenol, dihydroxybenzene, cresol, thymol or xylenol. The organic acid used for buffering may be acetic acid, citric acid, lactic acid or oxalic acid. The coating to be removed may be of nickel, chromium, zinc, tin, copper, cadmium or silver.
Patent GB-435548-A (GB)
Title: Improvements in the manufacture and production of lubricant compositions
IPC: C10M159/14
Filed: 1934-03-17
Abstract: Lubricants are obtained by mixing with lubricating oils or greases a lubricant prepared synthetically in presence of elementary sulphur or of such organic sulphur compounds as are anti-oxidants.  0,1--10,0 per cent of synthetic is a suitable addition.  Antioxidants specified are thio-acetaldehyde, thiazole, thiocresol, thionaphthol, thionaphthene, thiobenzamide, dimethyl-thiophene, amino-thiophene, ethyl mustard oil, dihydroxypropyl sulphide, toluene sulphamide, amino-diphenylsulphone, diamino-diphenyl sulphide, diphenyl thiourea. 0,5--15,0 per cent of antioxidant may be present. The synthetic may be prepared by "voltolization"; polymerization or condensation, e.g. of olefines, mineral or tar oils, waxes, fats, high molecular acids or alcohols, in presence of aluminium chloride, zinc chloride, iron chloride, or like catalyst; or by hydrogenation of rubber, resins, or other polymers of high m.w. For example: (1) a mixture of 100 lb. of hard paraffin wax, 30 lb. of ceresine, and 0,5 lb. of sulphur, is treated for 45 hrs. at 80 DEG  C. and a pressure of 5--10 mm. with silent electric discharges of 7000 volts and 1000 periods, and is then free from unchanged wax and from low-boiling constituents by vacuum distillation.  1 lb. of the product is added to a petroleum machine oil whereby the oil is stabilized and its setting point is reduced by 25 DEG  C. (2) 100 lb. of chlorinated paraffin wax is condensed at 30--40 DEG  C. for 24 hrs. with 5 lb. of benzene and 10 lb. of diphenyl sulphide in presence of kerosene and aluminium chloride and zinc oxide.  The inorganic materials, diluent, and low boiling products are removed and 3 lb. of the synthetic is added to 100 lb. of machine oil.