baber/WOPTO huggingface dataset:
Patent GB-1335770-A (GB)
Title: Electric generator systems
IPC: H02J7/24
Filed: 1971-07-01
Abstract: 1335770 Automatic voltage control GENERAL MOTORS CORP 1 July 1971 [2 July 1970] 30791/71 Heading G3R In a supply system for a vehicle of the type comprising an alternator 10 whose output winding 14 charges a battery 36 via a diode rectifier bridge 22 and whose field winding 12 is supplied from the winding 14 via a bridge 38 composed of diodes 40, 42, 44 and semi-conductor controlled rectifiers 46, 48, 50 provided with firing signals controlled by a voltage sensing and triggering circuit 64, voltage build-up of the alternator on starting is provided by a circuit which applies forward bias to the gate-cathode circuits of the rectifiers 46, 48, 50 from the battery 36 so that these rectifiers are ready to conduct when their anode-cathode circuits become forwardly biased due to the voltage generated in winding 14. During normal operation, variation of the output voltage of the bridge 22 above or below a predetermined value set by a Zener diode 76 causes a transistor 72 to be respectively switched on or off and a transistor 82 to be respectively switched off or on, the transistor 82 controlling the firing circuit comprising resistors 84, 92 and diodes 94 and thus causing the rectifiers 46, 48, 50 to be respectively non-conductive or conductive. At starting the transistors 72, 82 are respectively switched off and on, so that current flows from one terminal of the battery 36 through members 84, 82, 92, 94 to the gate-cathode circuits of rectifiers 46, 48, 50 and thence via diodes 40, 42, 44, the field winding 12 and a resistor 63 to the other terminal of the battery. Current also flows through resistors 96 which provide a constant resistance path between the gate and cathode of each rectifier and which may be integral therewith. Resistors 63, 84, 92 limit the current drain on the battery during shut down of the system. Build up of the voltage in winding 14 is aided by the residual magnetism of the alternator. Zener diode 88 and blocking diode 86 respectively protect the transistors 82 and 72 from large transient voltages, whilst the diode 78 provides temperature compensation for the Zener diode 76. The circuit 64 may be of the type comprising a control transistor equivalent to transistor 82, but connected to shunt the firing signals to earth when the output voltage of bridge 22 exceeds the predetermined value.
Patent GB-637754-A (GB)
Title: Improvements in or relating to an expander for brakes and method of making same
IPC: F16D51/08
Filed: 1947-11-20
Abstract: 637,754. Moulding inflatable expanders for brakes; cores. GOODRICH CO., B. F. Nov. 20, 1947, No. 30798. Convention date, Nov. 23, 1946. [Class 87 (ii)] [Also in Groups. XXIV and XXXIV] An expansible actuating element for a brake comprises an annular tube 12 of resilient rubber-like material having an internal cavity which houses a band 18 of rigid material with beaded edges 19, 20, said band forming an internal core during the moulding of the tube 12.
Patent GB-957679-A (GB)
Title: Process for the esterification of carboxylic acids
IPC: C07C69/34
Filed: 1960-09-07
Abstract: Esters are prepared by passing the vapour of an alcohol into a molten mixture of a mono-carboxylic or dicarboxylic acid or an anhydride of such an acid which acid or anhydride is normally solid and has a melting point below 200 DEG C. with an esterification catalyst, e.g. potassium hydrogen sulphate, and drawing off the ester in vapourous form through a distillation column by maintaining a sub-atmospheric pressure above the melt, the melt being maintained at a sub-atmospheric pressure.  The alcohol is passed through a conduit heated by being immersed in the acidic melt in such a way that the emerging vapour passes through the melt. When a dicarboxylic acid is used the diester passes through the distillation column, while the mono-ester condenses and is returned to the reaction zone.  The ester is condensed and the water produced in the reaction is continually drawn off by the vacuum pump.  Examples are given using specified apparatus wherein methyl laurate, dimethyl adipate, diethyl adipate, dimethyl succinate, dimethyl glutarate and dimethyl phthalate are prepared from the appropriate alcohol and acid or acid anhydride.
Patent GB-451022-A (GB)
Title: Improvements in vibration insulating joints or mountings
IPC: F16F1/42
Filed: 1934-10-27
Abstract: 451,022. Hinges. LORD, H. C., 36, Penn Building, Erie, Pennsylvania, U.S.A. Oct. 27, 1934, No. 30922. Convention date, Oct. 30, 1933. [Class 65 (ii)] [See also Groups XXXII and XIX] A vibration - insulating mounting particularly for instruments comprises a supporting wall 35 of plastic material which is comparatively undeformable under normal load and a relativelyyieldable, load-carrying rubber element 36 projecting angularly from the wall in shear relation thereto and integral therewith. As shown the wall is bolted to a supporting base 41, and to the element 36 a metal tube 37 is bonded to receive a pin 39 which supports the load. In a modification a flange at the bottom of the wall is clamped to the base 41 by a ring bolted to the base. In a further construction the wall, which is only of slightly greater thickness than the element 36, engages a socket in a supporting plate and is secured therein by a cover plate. Specification 17343/11, [Class 108 (iii)], is referred to.
Patent GB-483975-A (GB)
Title: Improvements in visible card indexes and the like
IPC: B42F17/00
Filed: 1937-11-11
Abstract: 483,975. Visible card indexes &c. PAUL, D. L. Nov. 11, 1937, No. 30922. [Class 146 (i)] In visible card indexes &c. in which the cards of a series are individually and detachably secured to a backing-sheet, the sheet is formed with two parallel rows of slots 10, each pair of slots at the same level being inclined in opposite directions from the vertical, and the cards having lateral tongues, formed by notches 6, for insertion in the slots. The spacing of the slots is preferably such that the cards overlap. To facilitate the insertion of the cards, the slots may be of segmental shape, as shown, or of crescent shape, and a short horizontal slit 11 may extend from the lower end of each slot. There may be only a single tongue at each edge of a card.
Patent GB-1471198-A (GB)
Title: Process for recycling chlorine gas in the chlorination treat ment of iron oxide ores containing titanium
IPC: F25J3/02
Filed: 1974-07-12
Abstract: 1471198 Upgrading titanium ores MITSUBISHI KINZOKO KK 12 July 1974 [12 July 1973] 30929/74 Heading C1N Iron containing titanium oxide ores are upgraded by a process comprising contacting the ore with chlorine and a solid carbon reducing agent in a fluidized bed to produce FeCl 3  vapour which is passed to a hollow column oxidation furnace to produce Cl 2  gas and iron oxide characterized in that the exit gases from the oxidation process are subjected to dust removing and drying operations and the Cl 2  is recovered from the exit gases and recycled to the chlorination stage. Exit gases from the chlorination stage, which contain FeCl 3 , are suitably fed to an oxidation furnace provided with a nozzle injecting an oxidizing gas in a direction and at a velocity such that the first contact of the discharge gas with the oxidizing gas occurs in an open space of the furnace and the turbulence caused by the first collision does not reach the wall of the furnace, the temperature gradient being controlled so that the outlet is cooler than the inlet. In a preferred embodiment, chlorine is introduced into a fluidized bed 1 containing the ore and reducing agent at a temperature of 800 to 1000 C. The gases issuing from the chlorination furnace 1 are passed at a temperature of 700 to 950 C. to an oxidation furnace 2. The exit gases at 400- 700 C. from the furnace 2 are passed to a dust removing device 3, a dryer 4, a compressor 5 and thence to a tower 6 containing liquid chlorine. Free chlorine is removed from the gas and the liquid chlorine is passed to a reservoir 8. The exhaust gases are vented to the atmosphere after passage through an alkaline solution to remove acid gases. The chlorine may alternatively be separated from the gas phase by selective absorption in an organic solvent. The separated chlorine is re-vapourized 9 and recycled to the chlorination stage 1. Chlorinated ore may be subjected to magnetic separation followed optionally by wet treatment and/or electrostatic separation. The ore is preferably oxidized before treatment in the chlorination stage.
Patent GB-1008186-A (GB)
Title: Improvements in or relating to magnetic tape handling devices
IPC: G11B15/28
Filed: 1964-08-04
Abstract: 1,008,186. Feeding record tapes. AMPEX CORPORATION. Aug. 4, 1964 [Sept. 16, 1963], No. 30957/64. Heading G5R. A pair of heads 12, 13, Fig. 1, and a guide 16 produce three bends in the path of a record tape 11, the guide 16 being adjustably movable, transverse to the tape to vary the spacing between the gaps in the heads 12, 13, which are preferably of the interleaved-track type. A second assembly 12a, 13a, 16a may be fitted. The guide 16 is of air-bearing type, Fig. 2, its position being adjusted by an eccentric 47 and held by a clamp-screw 42, the air path 52, 54 to the base-plate manifold 58 being sealed by an 0-ring 59. The tape is elsewhere supported on a capstan drum 21 as claimed in Specification 1,008,187 and a large wrap-angle is achieved by further guides 22, 23, which are also of air-bearing type, similar to guides 16, 16a (Fig. 5, not shown).
Patent GB-796857-A (GB)
Title: Apparatus for the production of nodular aluminium sulphate
Inventor: BROOKSBANK HARRY PERCIVAL
IPC: C01F7/74
Filed: 1954-10-14
Abstract: The apparatus is the same as that described in Specification 796,856, but the claims differ.
Patent GB-1014207-A (GB)
Title: Locking differentials of power-driven vehicles
IPC: F16H48/30
Filed: 1964-08-04
Abstract: 1,014,207. Controlling differential locks. DEERE & CO. Aug. 4, 1964 [May 28, 1964], No. 31075/64. Heading B7H. [Also in Division F2] In a tractor including a lockable differential 54 controlled by a pedal 78 and disc brakes 38, 40 individually controlled by pedals 32, 34 to assist steering by differential braking of the driven wheels 14,16, an interconnection between the pedal 78 and the brake pedals 32, 34 effects automatic release of the differential lock upon depression of either brake pedal. The pedal 78 is mounted on a pivot 80 and by exerting pressure on the front portion 82 of the pedal a valve 72 is. depressed against a spring 94 and is retained by " over-centring " of a link 88 in a position wherein hydraulic fluid from a pump P is supplied through a line 74 to an annular piston 76 which effects engagement of an annular multiple disc clutch 70 connecting one side gear 68 with the gear carrier 62 of the differential. The valve 72 may be released by depressing the rear portion 84 of the pedal 78, or is released upon applying either brake by a link 96 which is connected to the pedal 78 by an adjustable connection 102, to the brake pedal 32 by a pin-and-slot lost-motion connection 106, 108, and to the pedal 34 by a secondary link 98 and a similar pin-and-slot connection (not shown). Each brake pedal 32, 34 is provided with a return spring and actuates a valve (Fig. 6, not shown) controlling fluid flow from an hydraulic pump to the cylinder of the associated brake.
Patent GB-867323-A (GB)
Title: Improvements in or relating to electric lighting fittings
IPC: F21V17/00
Filed: 1956-10-12
Abstract: 867,323. Electric lighting fittings. BENJAMIN ELECTRIC Ltd., and CAMPBELL, H. G. Oct. 3, 1957 [Oct. 12, 1956], No. 31093/56. Class 75(4). An electric lighting fitting comprises a straight elongated channel member 10 of uniform cross-section, with means for supporting two straight tubular lamps 14 one on each side of the member 10, the lamps lying substantially wholly within the dimension of the member 10 at right angles to the medial plane of the lamps, control gear 15 for the lamps accommodated in the member 10 and partly or wholly reflecting members 16 spaced from the member 10 and enclosing the lamps on one side of the plane thereof. The member 10 may be open at the top and formed of upper inwardly inclined surfaces 10a, lower outwardly inclined surfaces 10b and a flat base 10c, all of which are made reflecting. The member 10 is closed by end plates 11 provided with flanges 17 supporting the members 16. The inner edges of the members 16 may be spaced apart to allow a flow of air which assists in keeping the inner surfaces of the members 16 free from dust. The fitting may be supported by rods mounted on the end plates 11 or on clamping plates 22 engaging flanges 10d of the member 10.
Patent GB-955085-A (GB)
Title: Improvements relating to monoazo aminopyrazole dyestuffs and their use
IPC: C09B29/02
Filed: 1960-09-09
Abstract: The invention comprises dyes of formula <FORM:0955085/C3/1> where A is a radicle of the benzene series which contains no hydroxy group ortho to the azo group but contains electrophilic substituents in the ortho and/or para position to that group, R1 is an alkyl group of 1-3 C atoms, or a phenyl group which may be substituted, and R2 is H or an aliphatic, cycloaliphatic, araliphatic, heterocyclic or aromatic radicle, which latter has no alkenylsulphonyl groups and the dye is free from water solubilizing groups which dissociate acid in water. The dyes are made in conventional fashion from appropriate benzene diazo, and aminopyrazole coupling, components. Coupling is preferably effected in buffered acid solution.  Representative of indicated electrophilic substituents are nitro, trifluoromethyl, cyano, chloro, keto, butyl- and xylyl-sulphonyl, sulpho-dimethyl- and cyclohexyl-amide and morpholide groups.  In addition to the electrophilic substituents other groups such as hydrocarbon, ether, acylamino or amino groups may be present in the diazo residue of the dye molecule.  Preferably R1 is Me and R2 is an aliphatic, cycloaliphatic or aromatic group. Indicated values for R2 are phenyl, which may be non-ionogenically substituted, alkyl of 1-5 C atoms, which may be substituted, aralkyl, e.g. benzyl, cycloalkyl, e.g. cyclohexyl and furfuryl-(2) radicles.  Nucleophilic substituents are preferred for R2 when phenyl, e.g. alkyl of 1-4 C atoms, alkyl-ether of 2-6 C atoms, phenylether and acetyl- and methyl-sulphonyl-amino groups. The dyes are disperse dyes and colour hydrophobic synthetic textile fibres, e.g. cellulose acetate and triacetate, high molecular glycol terephthalates, polyamide and polyacrylonitrile. Colour carriers, e.g. phenylphenol, should be present in the dye-bath. Yellow, orange, red and brown shades are obtained. Examples are provided of the preparation of the dyes and their use in colouring polyester fibres representative of the values for R2 in the products obtained being isopropyl, 1,2-dimethyl-n-propyl, b -hydroxy- and cyano-ethyl, ethyl, a -phenylethyl, cyclohexyl, 21-furfuryl, phenyl, 41-acetylaminophenyl, 31-methoxyphenyl and 11-naphthyl, and some diazo components have a carboethoxy group as an electrophilic substituent which ester value is additional to those indicated above.
Patent GB-480037-A (GB)
Title: Improvements in and relating to cutlery and like cabinets and cases
IPC: A47B95/02
Filed: 1936-11-14
Abstract: 480,037. Cases. GREAVES, B. T. Nov. 14, 1936, No. 31150. [Class 18] The front flange 4 of the lid of a case for cutlery, &c. is provided with a grip 1 of wood, ivory, &c. to facilitate lifting of the lid, the grip fitting into a recess cut across the whole width of the flange and having a recessed portion into which fits the top member 2 of the lock of the case. Alternatively, the member 2 may be integral with the grip. The screws fastening the member 2 in position also pass through and secure the grip 1.
Patent GB-302036-A (GB)
Title: Improvements in spring forks for cycles and motor cycles
IPC: B62K25/06
Filed: 1927-11-21
Abstract: 302,036. Pullin, C. G., and Groom, S. L. Nov. 21, 1927. Vibration-dampers. -In a spring fork for motor and other cycles of the type comprising a helical spring 2 enclosed in a telescopic casing consisting of an upper tubular part 3 attached to a part 4 of t he steering column, and a lower tubular part 5 attached to the fork, a contractile frictiondamper carried by one part 5 of the casing comprises a split ring 7 of wedge-section adapted to grip the other part 3 of the casing under the action of a rotatable sleeve or collar 10 movable axially along the casing. A friction band 13 is mounted in a groove on the inner periphery of the ring 7. As shown, the sleeve 10 screws on the enlarged upper end 6 of the tube 5, and acts on a split wedging-ring 8 to contract the ring 7. The screwed sleeve 10 may be replaced by a rotatable ring having inclined cam faces engaging relatively stationary cam faces, for example on another ring. The rings may be provided with radiaily-projecting arms for hand or cable actuation.
Patent GB-258135-A (GB)
Title: Improvements in devices for sharpening knives or other blades
IPC: B24D15/08
Filed: 1925-12-11
Abstract: 258,135. Gibbons, K. M. Dec. 11, 1925. V-slot blade sharpeners; tools.-Knives &c. are sharpened by members 1, consisting of a cylindrical portion 4, a part conical portion 2, which may be fluted, and a spigot 5, the members being mounted in contact with one another and in staggered relationship to form a V-slot through which the knife is drawn. The spigots of the members 1 are located in holes in a plate 7 with upturned ends, and are retained in position by a cover plate 8 having slots therein to expose the sharpening-members and flanges 12 whereby the device is secured to a base 14. The sharpening- members may be turned by means of slots 3 in their upper ends, and two groups of members may be provided having surfaces of different quality or material, so that coarse and fine sharpening are provided for; the members may be formed of steel or carborundum.
Patent GB-760094-A (GB)
Title: A self-controlling constant liquid-delivery device
IPC: G05D7/01
Filed: 1954-10-29
Abstract: 760,094. Regulating volume of flow of fluid. COGLIATI, M. Oct. 29, 1954 [Oct. 31, 1953], No. 31338/54. Class 135. An automatic constant-delivery device for liquids comprises a supply basin 2 for liquid having variable level, a lower basin 7 delivering the liquid at 8, a vertical open cylindrical pipe 6 between the two basins, a stationary balancing cylinder 9 open at its lower end and with an air valve 11 for the initial build-up of pressure via a pipe 12 connecting the balancing cylinder to the vertical pipe, a movable unit consisting of a double cylindrical jacket 13, 14 open at its bottom and closed at its upper end on a ring having an overflow edge and rigid with a float 26, the vertical pipe being inserted between the jacket. As the level A varies the float 26 always maintains the edge 15 a depth h below the level, thus maintaining the level D a height h above the weir 8. The liquid levels A<SP>1</SP> at the lower open end of the cylinder 9 and in the space E remain the same so that, because the crosssection of the cylinder 9 equals the cross-section of the space between the two jackets, the pneumatic pressure in this space remains constant irrespective of the movement of the jacket. Increase in pressure due to temperature or due to air bubbles entrained in the liquids in chamber 7 is prevented by means of vent apertures at the bottom of jacket 14. The float is guided at 29 and the jacket 13 formed in two parts one above and the other below the level D' of the liquid in the space F with an external step on which the constant air pressure acts upwards and an internal step of the same crosssection as the bottom of the jacket 13 so that a constant upward hydrostatic force is exerted on the jacket 13 irrespective of its movement.
Patent GB-299728-A (GB)
Title: Improvements in evaporators for refrigerating
IPC: F25B39/02
Filed: 1928-10-29
Abstract: 299,728. Deventer, H. R. van, and Grier, J. A. Oct, 27, 1927, [Convention date]. Refrigerating, compression machines for; ice - making, can or mould apparatus for; refrigerators, domestic and like.-An annular evaporator suitable for ice-making and cooling a domestic refrigerator comprises inner and outer tube lengths 24, 25 expanded or contracted at the ends 27, 29 and welded or soldered together. The inlet pipe 35 from the expansion valve 34 is welded to a boss 31 welded to or formed on the bottom of the outer wall, and the outlet pipe 36 is similarly connected' to a boss 32 at the top of the inner wall. The pipes 33, 36 from and to the compressor may be arranged close together to exchange heat and may be covered by a shield 39, Fig. 2, outside the refrigerating-chamber. Supports 40 for ice trays 43 are secured to the inner wall of the evaporator, which is mounted in a compartment 9 of the chamber defined by inner partitions and the outer walls 4, 5 of the chamber. One partition 7 has an opening, fitted with a hinged door 13, opposite the open end of the evaporator for the removal of the ice trays, while the other partition 6 has an upper opening 10 for flow of the air of the chamber proper around the evaporator. The evaporator may be supported by stirrups 19, 20 bolted to the top of the chamber. Alternatively, upright supporting straps may be welded to the sides of the evaporator, or to split rings fitting round the evaporator and tightened by bolts. In another form of support, straps curved to fit the sides of the evaporator are bolted to the top of the chamber and also to bottom brackets carried by the partition and wall. These brackets also serve to secure ledges for a spare ice tray carried. below the evaporator. The evaporator may be cylindrical, oval, of polygonal in shape, and one end may be closed.
Patent GB-862903-A (GB)
Title: Vehicle windscreen wipers
Inventor: PURDEN ROBERT HESKETH
IPC: B60S1/34
Filed: 1958-10-01
Abstract: 862,903. Windscreen wipers. LUCAS (INDUSTRIES) Ltd., J. Dec. 24, 1959 [Oct. 1, 1958], No. 31390/58. Class 138(1). A windscreen wiper has a wiper blade 4 mounted on a rectangular frame 1 which is reciprocated vertically by a rotary member 5 driven by an electric motor and having a projection 9 which rotates a crank arm 8 connected to the frame 1 by a spring 10. If movement. of the blade 4 is prevented, e.g. by mud or snow, the spring 10 yields to permit continued rotation of the member 5. If desired a scraper may be mounted on the frame 1.
Patent GB-612118-A (GB)
Title: Cathode ray deflecting circuit
IPC: H03K4/12
Filed: 1945-11-21
Abstract: 612,118. Cathode-ray oscillographs. MARCONI'S WIRELESS TELEGRAPH CO.,.Ltd. Nov. 21, 1945, No. 31408. Convention date, July 25, 1944. [Class 37] [Also in Group XL (c)] A cathode-ray oscillograph in which a number of waveforms are viewed simultaneously on separate horizontal traces has the beam deflected in the horizontal direction by a succession of saw-tooth waves each starting from the same datum line, but having differing directions. Curve 33 of Fig. 3 shows such a horizontal deflecting voltage, the beam being caused to traverse two different horizontal traces by the application of the waveform shown in curve 34 to the vertical deflecting plates. The signals displayed on the successive horizontal sweeps may be lined up by adjustment of the timing of the start of the sweeping voltages.