baber/WOPTO huggingface dataset:
Patent GB-920106-A (GB)
Title: Improvements in or relating to inverters
Inventor: KING KENNETH GORDON
IPC: H03K17/70
Filed: 1960-11-30
Abstract: 920,106. Inverting. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Sept. 5, 1961 [Nov. 30, 1960; May 11, 1961], Nos. 41112/60 and 17185/61. Class 38 (2). [Also in Group XL (c)] In an inverting circuit comprising controllable semi-conductor rectifiers, the rectifiers are switched off at the end of conducting periods by applying to the D.C. supply a pulse of opposite polarity from a capacitor which is periodically charged through a switch. In a single phase inverter comprising rectifiers TS1, TS2, TS3, TS4, supplying a resistive load from D.C. supply I, opposite pairs of rectifiers TS1, TS4 and TS2, TS3 alternatively switched on by pulses from means not shown, are switched off by reversal of the supply voltage when contact b of switch S is closed to discharge capacitor C to the input terminals. Capacitor C is charged from D.C. supply II when contact a is closed. Switch S may consist of controlled rectifiers as described in Specification 909,020, and as shown in Fig. 4. In a modification, Fig. 4, rectifiers TS3-TS8 of an inverter supplying a threephase inductive load have in reverse parallel rectifiers MR3-MR8 which, by diverting the current when the load E.M.F. rises above the supply voltage, allows the main rectifiers to be switched off by pulses from capacitor C2. Reactive power can be fed back to the supply by duplicating inductor L or using a doublewound choke. In a modification, Fig. 6 (not shown), C2 may be charged from D.C. supply II or from D.C. supply I when the charge is reversed by a resonant circuit before being applied to the input terminals. In Fig. 4 and Fig. 6 (not shown), additional diodes may bypass circulating currents. There may be any number of commutations per cycle and any number of phases, and the inverter is not limited to bridge circuits, the centre point of the D.C. supply being used as the A.C. neutral point.
Patent GB-1353784-A (GB)
Title: Machine for use in building walls
IPC: E04G21/22
Filed: 1971-09-03
Abstract: 1353784 Building brick walls &c MONRES (PTY) Ltd 3 Sept 1971 [17 Sept 1970 11 Aug 1971] 41230/71 Heading E1S A machine for aligning a previously laid row of bricks when building a brick wall comprises a mobile frame 10 carrying an alignment head 106 which includes an elongated plate 124 and is pivotally mounted at 102 for downward movement to bring the plate 124 into contact with the upper surfaces of a row of bricks already laid roughly on a layer of mortar on the wall, the plate 124 being provided with vibrating means and thereby aligning the upper surfaces and pressing the bricks into the mortar; the alignment head 106 also includes depending fingers 134, 136 arranged in two spaced parallel rows one on each side of the plate 124 and displaceable towards each other to contact the bricks and thereby align their side surfaces. The alignment head 106 is pivoted on a support which is mounted for lateral movement on another support 18.2 which is mounted for fore and aft movement on a further support 18.1 which is vertically movable on columns 16 of the frame 10 which is movable on a track running parallel with the wall and has automatic levelling means; hydraulic, pneumatic and electrical means for effecting the various adjusting movements and a control system are described.
Patent GB-1502625-A (GB)
Title: Soc francaise des prod pour catalyse hydrocarbon conversion catalysts their preparation and us
IPC: B01J23/04
Filed: 1975-10-08
Abstract: 1502625 Aromatization SOC FRANCAISE DES PRODUITS POUR CATALYSE 8 Oct 1975 [11 Oct 1974] 41261/75 Heading C5E [Also in Division B1] Hydrocarbon feeds are converted using a catalyst comprising (i) a carrier; (ii) platinum; (iii) at least one metal selected from iridium, rhodium and ruthenium; (iv) cobalt; (v) at least one metal selected from copper, manganese, silver or gold; and, (vi) 0À1-10% wt. (based on the carrier) of a halogen in combined form. The catalyst is particularly suited to the production of aromatic hydrocarbons, e.g. benzene, toluene or xylenes, from gasolines, e.g. steam cracked or reformed gasolines from naphthenic hydrocarbons by dehydrogenation; or from paraffins by dehydrocyclization. For example, an unsaturated charge containing diolefins and mono-olefins may be firstly treated to a hydrogenation step to convert diolefins to monolefins and alkenylaromatics to alkyl aromatics; then the charge may be treated in a hydrogenationhydrodesulphurization step to convert monolefins to paraffins and free the charge from sulphur; and finally, the charge may be treated in the presence of hydrogen with the present catalyst to form aromatics, e.g. at 300-600 C., a pressure of 1-60 kg./cm.<SP>2</SP> and a LHSV of 0À1-10. This step may be effected in a plurality of stages, for example a first stage at 400-600 C. using a catalyst wherein the catalyst is neutral and of a specific surface lower than 100 m.<SP>2</SP>/g. and a second stage wherein the catalyst has a relatively high surface area and is acidic. The catalyst may be in fixed bed, moving bed or fluidized form. The examples describe treatment of a feed containing pentanes, hexanes, heptanes, cyclopentane, methylcyclopentane, cyclohexane, C 7  and C 8  naphthenes and some benzene and toluene to give a product of increased benzene and toluene content.
Patent GB-866954-A (GB)
Title: Improved machine for washing and stoning cereal grain
Inventor: FIELDEN FRED
IPC: B02B1/04
Filed: 1958-12-22
Abstract: 866,954. Cleaning grain. ROBINSON & SON Ltd., THOMAS. Dec. 17, 1959 úDec: 22, 1958], No. 41271/58. Class 58. [Also in Group II] Grain is separated from stones &c. by an inwardly directed stream of water which deposits the grain in a centrifuge mounted concentrically with the separating device. In the form shown the grain is fed through a funnel 1 into the stone separator 10 where it meets a stream of water fed in at 14. The stones continue to fall and enter a pipe 11 for removal at 12. The water carries the grain over a funnelshaped member 2 into a conical member 3 which directs it to the bottom of the centrifuge 4, the lower part of which is imperforate so that the water washes over the grain. The centrifugal force carries the grain and water up the sloping wall, the upper part of which is perforated so that the water passes through, the grain passing over the top into a channel 6 to be swept by paddles 7, attached to the centrifuge, to the outlets. The centrifuge is connected by spokes 19 to a sleeve 18 driven by a motor 16 through a belt 17.
Patent GB-1529443-A (GB)
Title: Beer kegs and like containers
IPC: B67D1/08
Filed: 1977-06-02
Abstract: 1529443 Casks BURNETT & ROLFE Ltd 2 June 1977 [8 April 1976] 41291/75 Heading B8D In a container, e.g. a beer keg, provided with a filling and emptying spear, the spear 2 is fitted at its inner end with a deflecting device 1 which has an opening 5 of lesser diameter than the spear and an annulus 4 and skirt 3 which together provide passageways 9, 10, the arrangement being such that when liquid is forced through spear 2 to wash the interior of the container, part of the flow is directed via passageways 9, 10 on to the outer surface of the spear. As shown the device 1 is removably attached by means of clamping screws 7 (only one shown). Other embodiments, Figs. 3-6 (not shown), are described, the device of Figs. 5, 6 (not shown), projecting and being held within the spear. The device may be permanently mounted, e.g. by swaging or welding.
Patent GB-889092-A (GB)
Title: Hose and hose end assembly and method of making same
IPC: F16L33/34
Filed: 1959-12-04
Abstract: 889,092. Hose couplings. WEATHERHEAD CO. Dec. 4, 1959 [March 26, 1959], No. 41373/59. Classes 99(1) and 99(2). A crimped-on hose end assembly comprises a nipple 17 for insertion into the hose and a sleeve 18 forming in conjunction with the nipple an annular pocket to receive the hose end, the inner surface of the sleeve and the outer surface of the nipple being provided with helical grooves to accommodate the external and internal wire convolutions 14, 12 of the hose, and a layer 24 of synthetic resinous material for sealing the hose within the pocket and bonding the hose to the walls thereof. As shown, the wall of the hose is formed from concentric layers of synthetic sheet material, such as polyethylene terephthalate resin, between inner and outer layers 11, 13 of synthetic fibre mono-filaments. For fluid sealing between the fitting and hose the latter is coated with a layer 24 of a thermosetting resin such as phenol-aldehyde or epoxy resin. After assembly of the fitting on to the hose, stepped dies are used to radially contract the sleeve 18. In a modification, the sleeve is formed as a separate tubular member, and the sealing layer 34 comprises a tape or film of a thermosetting resin wound on to the nipple and over the outer surface of the hose.
Patent GB-1023897-A (GB)
Title: Method of rendering fibrous materials water-repellent
IPC: D06M15/643
Filed: 1964-10-13
Abstract: A fibrous material is rendered water-repellent by treatment first with a catalyst which is an organic ester of titanium or an alkyl tin carboxylate and then with a vaporous alkoxy silane at a temperature of at least 75 DEG C.  Various tin compounds are specified as catalyst.  The catalyst may be dissolved in perchloroethylene. Alkoxy silanes specified are methyltrimethoxy, dimethyldimethoxy, dimethyldiethoxy, dimethyldiisopropoxy, diethyldiisopropoxy, decylmethyldiethoxy, decyltrimethoxy, trifuoropropylmethyldiethoxy, and heptafluorononyltrimethoxy silane.  The alkoxy silane may be vaporized in nitrogen.  The fibrous material may be of glass, asbestos, rock wool, silica, metal, paper, cotton, wood, linen, rayon wool, silk, cellulose acetate, nylon, or polyester.
Patent GB-977419-A (GB)
Title: Cargo ship for the transport of liquefied gases
IPC: F17C1/00
Filed: 1961-11-24
Abstract: 977,419. Storing liquefied gases. S. A. DES ANCIENS CHANTIERS DUBIGEON, and R. LEROUX. Nov. 24, 1961 [Feb. 1, 1961], No. 42138/61. Addition to 832,880. Heading F4P. [Also in Division B7] A ship for the transport of liquefied gases has a tank having an intermediate section constituted by a plurality of part cylinders 3a, 3b, 3c, 3d, 3e, 3f meeting at lines extending parallel with the axis of the ship and part spherical or ellipsoidal end sections, and vertical bulkheads 35 (without openings) and horizontal bulkheads 35a (with openings 35b) extending longitudinally in the tank, the bulkheads being welded to the said meeting lines and to horizontal and vertical stay tubes 7. The port cylinders and stay tubes have heat insulation 5 exterior to the tank volume. A dome 37 is provided at the fore part of the tank for liquefied gas delivery piping 38, delivery piping 39 of pressure gas to achieve liquid discharging, piping 40 for pressure balance between cylinders and safety valves 15. From covered sleeves 47 at the top and aft part of each of the parts of the tank separated by the vertical bulkheads depend cargo discharge suction tubes 41. The ship has an auxiliary tank 51, an unloading pump 53, a gas compressor 54 and a refrigerating plant. Speci- Bcation 920,144 also is referred to.
Patent GB-1535451-A (GB)
Title: Coating ceramic with silicon
IPC: C30B29/64
Filed: 1976-10-12
Abstract: 1535451 Ceramic coated with silica HONBYWILL INC 12 Oct 1976 [24 Oct 1975] 42263/76 Heading B2E Ceramic materials are coated with a layer of silicon by providing a ceramic having a thermal expansion coefficient similar to that of silicon, applying a layer of carbon and contacting the surface thus obtained with molten silicon to form a silicon coating. The carbon coating may be obtained by rubbing the substrate surface with carbon, by air blasting, by pyrolytic deposition or by chemical deposition. The contacting step may include dipping and withdrawing the substrate from the molten silicon at a rate to provide optimum grain size in the coating. The substrate may be of mullite, alumina or zirconia.
Patent GB-1410033-A (GB)
Title: Process for the production of derivatives of hydroxyl compounds
IPC: C07C41/00
Filed: 1972-09-12
Abstract: 1410033 Reactions using chelate intermediates SUOMEN SOKERI OSAKEYHTIO 12 Sept 1972 [15 Sept 1971] 42352/72 Heading C2C A derivative of a hydroxy compound is made by reacting a compound, containing at least two hydroxy groups or at least one hydroxy group and at least one other group capable of complexing with a polyvalent transition metal, with an alkali metal hydride in an anhydrous medium; reacting the formed alcoholate, in an anhydrous medium, with a polyvalent transition metal compound; subjecting the resulting complex or chelate to a further reaction (e.g. substitution, addition, condensation, oxidation or reduction); and freeing the derivative of the hydroxy compound from the reacted complex or chelate. In examples, methyl 4,6-O-benzylidene- α-D-glucopyranoside, triethylene glycol, 1,3-butanediol and pyrocatechol are monomethylated using their Cu and Co chelates and methyl 4,6-O-benzylidene-α-D-glycopyronoside is monoacetylated, using its Hg chelate.
Patent GB-1205554-A (GB)
Title: Improvements in or relating to positional displacement transducer arrangements
IPC: H03M1/00
Filed: 1966-09-22
Abstract: 1,205,554. Transducers. NATIONAL RESEARCH DEVELOPMENT CORP. 19 Dec., 1967 [22 Sept., 1966], No. 42391/66. Heading G4H.  A multidigital encoder, mechanically coupled to a movable object and including for the least significant digit section an optical grating from which cyclic A.C. signals are derived, the zero closings of these signals controlling the subsequent interrogation of more significant digit sections of the encoder, generates an alarm signal if a change occurs in one of the digital sections when the next lower section is on a value at which it is inappropriate for a change to occur. In the embodiment described particularly for use in the transducers of Specifications 1,169,698 and 1,161,561, the 0, 4, 5, 9, outputs of each stage are connected via an OR gate G1, G4, G7 (Fig. 1) to an AND gate G2, G5, G8. Each AND gate also receives the output from an associated OR gate G3, G6, G9 receiving a signal when level detector W2, W3, W4 detects a change in the signal from encoder E2, E3, E4 so that, if the latter occurs when the output of the next lower stage is 0, 4, 5, 9, an alarm light MA1, MA2, MA3 is operated or an audible alarm given.
Patent GB-978835-A (GB)
Title: Improved needle and rotary hook support assembly for sewing machine
IPC: D05B11/00
Filed: 1963-10-28
Abstract: 978,835. Sewing machines. UNITED MATTRESS MACHINERY CO. Oct. 28, 1963 [Nov. 1, 1962], ], No. 42467/63. Heading D1G. A sewing machine having a reciprocating vertical axis needle and a vertical axis rotary hook is provided with a needle guide having a needle-receiving bore, the upper end of the guide being formed with a narrow vertical thread-passing slot entering the bore, and the lower end of the guide being formed with a hook-passing portion having a vertical rear face passing through the bore and a forwardly sloping upper portion. The needle guide is provided in a machine for sewing padded work such as matresses in which the work is mounted on a carriage movable in any direction, the needle guide being intended to counteract the lateral stresses imposed on the needle by such work feed. The throat plate 33 has a needle-passing bush 70 formed with a rounded upper edge to guide a deflected needle into the bush. A needle guide 72, fixed under the throat plate, has a needle-receiving bore 74. A narrow vertical thread-passing slot 78 extends into bore 74 at the upper part of guide 72. The lower part of the latter is framed with a cutaway portion 76 having a rear vertical face which allows passage of the hook portion 42 of a vertical axis rotary hook 28 and is substantially aligned with a flat hook-facing portion 68 of the needle 24, the cutaway portion also having a forwardly-sloping upper portion serving to guide the threads into the slot 78. The bobbin case 32 is formed on its upper surface with a projection 50 co-operating with rotation-preventing abutments 52, 54 projecting downwardly from the throat plate 33, abutment 52 having a nylon insert 58 for engagement with projection 50. U.S.A. Specification 1,162,987 is referred to.
Patent GB-1154365-A (GB)
Title: Photographic Silver Halide Developer Packs
Inventor: COWELL RONALD
IPC: G03C5/26
Filed: 1965-10-07
Abstract: 1,154,365. Developer concentrates. MAY & BAKER Ltd. Sept.30, 1966 [Oct. 7, 1965], No.42653/65. Heading G2C. A two component silver halide developer pack comprises two liquid concentrates which can give a developer pH 9À5 or above on dilution with water. The first concentrate comprises a solution of 1-phenyl-3-pyrazolidone in a substantially non- aqueous solvent in which the pyrazolidone is at least 5% w/v soluble at 20 C., the said solvent being a mixture of a water-miscible non-acidic organic solvent e.g. butyrolactone or ethyl lactate, with a water-miscible organic acid e.g. lactic or formic acid and the second concentrate comprises a polyhydric phenol developer, an alkali an inorganic sulphite on metabisulphite, an anti-foggant e.g. benzotriazole or an alkali metal bromide and water. The second concentrate may comprise a sequestering agent e.g. N-hydroxyethyl ethylene diamine -N, N', N'- triacetic acid trisodium salt or tetrasodium EDTA and a buffering agent e.g. an alkali metal carbonate or bicarbonate, boric acid or an alkali metal metaborate or an alkali metal phosphate on polyphosphate.
Patent GB-1427783-A (GB)
Title: Recovery of terephthalic acid dimethylester
IPC: C07C/
Filed: 1973-09-11
Abstract: 1427783 Dimethyl terephthalate DYNAMIT NOBEL AG 11 Sept 1973 [12 Sept 1972] 42766/73 Heading C2C Terephthalic acid dimethylester is recovered from the substantially involatile, tar-like residue obtained by the liquid phase oxidation by air of p-xylene and p-toluic acid methyl ester by esterification of the acids formed with methanol, separating the dimethyl terephthalate and treating the residue with methyl alcohol at a temperature above 250 C. to form a further amount of dimethyl terephthalate and separating this from the residue.
Patent GB-913316-A (GB)
Title: Improvements in or relating to coin testing apparatus
IPC: G01N27/02
Filed: 1960-12-13
Abstract: 913,316. Coin-testing apparatus. PARADYNAMICS Inc. Dec. 13, 1960 [Dec. 16, 1959], No. 42889/60. Class 37. In the apparatus, a coin to be tested and a standard are compared in a pair of similar reactors the reactance and resistance of which is modified by their presence, the reactors being connected with two further impedances in a bridge which is supplied with R.F. power and has a null output when the tested coin is genuine. The bridge, Fig. 2, which comprises inductors I 1 , and I 2  for housing the standard and receiving the coin under test, respectively, and capacitors BC1, BC2, shunted by their respective trimmers, is fed from a modified Hartley oscillator OSC, and the output after amplification in valve VT2 is rectified in a diode VT3 to fire a gas tube GT1. The oscillator frequency is in the order of 100 kc/s. to 10 mc/s. and preferably has a high harmonic content. Solenoid AR in the anode circuit of tube GT1 controls an interceptor C1 across the bottom of the coin slot in inductor I2 to block the passage if the coin is spurious. A modified circuit described with respect to Fig. 10 (not shown), includes also a phase-discriminator whereby both the amplitude and phase or phases of the harmonics in the output are compared, a direct current amplifier in the discriminator output circuit, and a magnetic amplifier, the control winding of which is energized from the D.C. amplifier connected to supply mains power to the solenoid. The bottom of the coin slot P, Fig. 3, has a counterbored or flared opening at its lower end, the inner edges of which provide lateral stops for the interceptor C1 which comprises an extension of a pivoted armature controlled by the solenoid AR. Two shoots BC, GC are mounted on a bracket 27 attached to a panel 29 with their channels diverging to provide separate discharge points. A fresh button PR is provided to deflect the interceptor and return a spurious coin. In a coin sorting and counting arrangement, Fig. 8, coins of different denominations are fed down a shoot having test inductors I2A-I2C each included in a separate bridge including an inductor I1A-I1C containing a different standard coin. The bridge outputs are applied to control deflectors GA-GC through amplifiers and interceptor actuators including mechanical linkages LKA-LKC so that the coins are sorted into containers CRA-CRC and mounted on counters CTA-CTC responsive to the actuators. A bridge including selectable capacitors between the plates of which coins may be passed and selectable capacitors including different standard coins is described with reference to Fig. 12 (not shown). The capacitors may be switched in individually or in parallel. The bridge or bridges may form part of the oscillator tank circuit.
Patent GB-1313339-A (GB)
Title: Combination mixing capsule and dispenser
IPC: A61C5/06
Filed: 1970-09-08
Abstract: 1313339 Capsules for mixing and dispensing MINNESOTA MINING & MFG CO 8 Sept 1970 [9 Sept 1969] 43011/70 Heading A5R [Also in Divisions B1 and F1] A capsule for storing, mixing and administering, e.g. dental fillings, comprises an elongate body 14 with a closed end adapted to displace a seal 20 formed at the end of a sleeve 18 which fits in a large diameter compartment at one end of a hollow second elongate body 22 which has a dispensing tube 26 closed by a plug 28 at its other end. During storage two components of a dental filling such as an amalgam or a resin are contained in compartments 29 and 30 either side of the seal 20. In use the body 14 is pushed into the body 22, e.g. by a lever device as in Fig. 6 (not shown), rupturing the seal 20 and combining the two components in a compartment (33) Fig. 3 (not shown). The movement of the body 14 is limited by a cap 12. The capsule is then agitated to mix the contents. The plug 28 is now removed and the contents dispensed through tube 26 by pushing the body 14 further into the body 22 by a plunger 40 of the tool shown in Fig. 8. The tool has an angled niche 50 which bends tube 26 to aid application. Suitable materials for the seal 20 and the capsule body are disclosed. The capsule may be used too for other two-part products, e.g. adhesives and may have further compartments for products of more than two components.