baber/WOPTO huggingface dataset:
Patent GB-1163065-A (GB)
Title: Improvements in or relating to Batteries of Fuel Cells.
IPC: H01M8/04276
Filed: 1967-06-16
Abstract: 1,163,065. Series-connected fuel batteries. SIEMENS A.G. 16 June, 1967 [22 June, 1966], No. 27990/67. Heading H1B. In a battery of series-connected fuel cells to which electrolyte is supplied the electrical resistance of the electrolyte is increased to prevent short-circuiting therethrough by the injection of gas into the electrolyte before it enters a cell so as to form bubbles in the electrolyte. As shown, a fuel battery is supplied with H 2  through conduit 3 and O 2  through conduit 5. Unreacted O 2  is exhausted through conduit 6 to which the electrolyte inlets of alternate cells are connected by conduits 8.
Patent GB-323483-A (GB)
Title: Improvements in or relating to rotary engines and the like
IPC: F02B53/00
Filed: 1928-10-01
Abstract: 323,483. Daw, A. W., and Daw, Z. W. Oct. 1, 1928. Fixed - abutment type ; working-fluid supply; cooling parts; packing vanes.- The motion of a multiplevaned piston member 4 which oscillates in a cylinder divided by partitions 3 into a number of chambers is transmitted to a rotary crankshaft by spur gearing 10 on the axle 7 of the piston member which engages a toothed quadrant 11 carrying an arm 12 which is linked to the crankshaft 15 by a connecting rod 13. The crankshaft 15 may he to one side of the cylinder, as shown in Fig. 6, which illustrates an arrangement of two engines side by side, or may pass through the hub 7 of the piston member. An internal-combustion engine is shown in Figs. 3 and 4 the admission and exhaust for each chamber comprised between a partition 3 and a piston vane 5 being controlled by nested sleeve valves 17, 18. The valves' 17, 18 are linked to wrist plates 27, 29 which are oscillated by cams 35<a>, 36<a> driven by eccentrics on a halfspeed shaft 32. The cams have a lostmotion in recesses 37, 38 in the wrist plates 27, 29 so that for one stroke of the piston member one wrist plate is stationary but is moved on the next stroke, the other wrist plate being moved on the first stroke and stationary on the second: the recesses 37, 38 are of a length corresponding to half the eccentric throw with an allowance for the thickness of the cam. Cooling of the piston is effected by oil or water under pressure to prevent the formation of steam. The cooling fluid is fed through a pedestal 58 and swivelling pipe 45, Fig. 13, to the piston axle 7a and thence through passages 44 to pockets 7i, 7<c> in the hub and vanes and passes out by a swivelling pipe 45a to a. pedestal 66. The pressure of the fluid acts on plungers 51 to maintain vane - packing strips 50 against the cylinder walls. Cooling fluid is also fed to jackets 41, 41<a> in the cylinder and around the valve housings 2 to pockets in the partitions' 3. The cylinder end walls are fitted with steel liner plates with integral sleeves to form bearings for the axle 7. Internal-combustion engines are water or steam jacketed, steam engines are steam or air jacketed, and compressors are water jacketed.
Patent GB-684609-A (GB)
Title: Improvements relating to vehicle axle suspensions
IPC: B60G21/05
Filed: 1949-11-03
Abstract: 684,609. Vehicle suspensions. DAIMLERBENZ AKT.-GES. Nov. 3, 1949 [Nov. 2, 1948], No. 28171/49. Class 108(ii). In a vehicle suspension comprising laterally-disposed thrust links resiliently jointed to the vehicle frame and guiding the wheel carriers in vertical planes, the wheel carriers are connected rigidly to the thrust links and are connected together by an axle member in a torsionally resilient manner, or at least so that they can turn relatively to one another. The links may be sprung by helical springs, leafsprings or torsion bars. As shown, a pair of thrust links c are resiliently pivoted to the frame a and are rigidly connected to sleeves d, which act as wheel carriers, each wheel being journalled on a stub axle e mounted on a lug projecting inwardly from a sleeve d. In Fig. 3 the sleeve d is shown mounted on the axle member h by two rubber bushes k, l, but one bush may be used, or such rubber bushes may be dispensed with and the axle member h be rigidly connected to the links or wheel carriers, the torsional resilience being obtained by making the axle torsionally elastic itself; e.g. it may be a tube slit along its centre portion, or two halves connected by rubber. As shown in Fig. 2, the thrust links c may be sprung by helical springs m, within which a tubular shockabsorber n may be located, but other types of suspension springs may be used. The links c may be arranged diagonally. A stabilizer torsion rod q may be provided, but this may be dispensed with, particularly when the axle member h is fast with the sleeves d and is torsionally elastic. The thrust links c are preferably U-shaped in cross-section and have their ends split into a fork, as at c<1>, c<2> in Fig. 4, connected by a pin r. The thrust link is mounted on the frame eye a<1> by a rubber bush s having shoulders s<1>, s<2> which embrace the eye a<1>. The rubber bush may be pre-compressed, preferably to a greater extent on the outside, as at s<1>, than on the side s<2> nearer the vehicle centre line. This is conveniently done by so constructing the axle and thrust link assembly that the distance between the centre lines C of the two links is slightly less than that between the centre lines A of the two eyes a<1>.
Patent GB-917717-A (GB)
Title: Improvements in or relating to electroacoustic transducer assemblies
IPC: H04R1/22
Filed: 1960-08-15
Abstract: 917,717. Receivers. SIEMENS & HALSKE A.G. Aug. 15, 1960 [Aug. 21, 1959], No. 28202/60. Class 40 (4). In a telephone receiver of the ring armature type in which the air space 16 immediately behind the diaphragm 14 is coupled to a resonator to compensate for the diaphragm resonance, the diaphragm is of metal, and the volume of the air space 16 exceeds that of the air space 15 immediately forward of the diaphragm. The ring armature 11 is secured to the periphery of the diaphragm 14 which is made of a light alloy such as A1Mg5, the annular magnet 6 being provided with a polepiece 8 and an armature abutment 7, and an insulated packing ring 17 of polyethylene being inserted between the magnet 6 and the armature 11. The diaphragm 14 may be drawn forwardly with steep flanks and have a central portion in the form of a shallow rearwardly tapering frustum of a cone with upstanding outwardly extending corrugations 18 (Figs. 1, 4), or it may be in the form of a segment of a sphere (Fig. 3). In the latter case the packing ring 17 is so shaped as to reduce the volume of the air space 15 but not to obstruct the sound outlets 4 (Fig. 1). The packing member 9 has a single cylindrical aperture 12, of about 6 mm. diameter, which together with the air space 13 (Fig. 1) in the handset moulding constitutes the resonator coupled to the air space 16. In a modification (Fig. 4) the rear of the receiver is closed, the packing member 9 being replaced by a thin-walled housing 20 the interior of which forms the resonant cavity 13.
Patent GB-503587-A (GB)
Title: Improvements in or relating to variable ratio transmission mechanism
IPC: F16D43/28
Filed: 1937-10-06
Abstract: 503,587. Valves. NAPIER & SON, Ltd., D., and HALFORD, F. B. Oct. 6, 1937, No. 28297/38. Divided out of 503,522. [Class 135] [Also in Group XXIV] A high-pressure oil supply pipe T<6> communicates directly with the interior of a rotary valve T<5> controlling a pair of discharge pipes T<1> and T<4>, and communicates through a pressure-reducing valve T<8> with an annular recess T<7> on the valve. The valve has two ports T<9> and T<10> leading from the interior and two external longitudinal grooves T<11> and T<12> leading from the groove T<7>, the arrangement being such that, while high-pressure oil is being supplied to either of the pipes T<1>, T<4>, low-pressure oil is being supplied to the other.
Patent GB-187454-A (GB)
Title: Improvements in and relating to axle caps or covers and the like
IPC: B60B27/00
Filed: 1921-10-25
Abstract: 187,454. Fox, R. W. H., and Link, R. P. Oct. 25, 1921. Hubs.-An axle cover comprises a main portion A formed with a central cylindrical part B which screws to an axle-box C. As shown in Fig. 1, the part B is flanged to seat a compression spring E. In a modification shown in Fig. 3, the central part B is extended at B<1> to bear against the flats of the wheel securing nuts G. In other modifications, the edge of the cover A, or an internal flange, may be fluted or corrugated to engage correspondingly formed spring washers under the securing nuts G : or the cover may be shaped so as to be self-locking by flexing outwardly when screwed home. The inner surface of the cover may have a leaf-spring to bear against the securing-nuts.
Patent GB-1432004-A (GB)
Title: Visual display apparatus
IPC: G09G3/10
Filed: 1973-06-14
Abstract: 1432004 Alpha numeric displays and circuits therefor PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 June 1973 [17 June 1972] 28336/73 Heading G5C [Also in Division H1] Display apparatus comprises a gas discharge display tube 1; a first circuit 9 controlling an anode bias to the tube and an extinction voltage measuring circuit 91 coupled to the first circuit and including a capacitor 95 charged by an extinction voltage measuring electrode 83. This allows the anode bias to be accurately determined relative to the extinction voltage and permits the use of integrated circuits containing MOS transistors. The tube comprises a common anode 3 connected to a control circuit 5 receiving the supply voltage from the first circuit; a plurality of auxiliary anodes 11, 13, 15 and display cathodes 11...45 arranged in 3 groups with corresponding cathodes interconnected. The apparatus includes control circuit 57 and a voltage source 101. To display a character a positive potential is applied to anode 3 by circuit 5, selected cathodes are earthed and a positive pulse applied to a selected auxiliary anode by circuit 57. The potential of the corresponding electrode 83, 85, 87 is sufficiently high to block diode 93 and hence capacitor 95 charges through resistance 97. To erase a display a negative pulse is applied to anode 3 causing the discharge to transfer to one of the electrodes 83, 87. This allows diode 93 to conduct and capacitor 95 to discharge down to the extinction voltage of the tube. This potential is subsequently applied to the auxiliary anodes via diodes 73, 75, 77 when the next display is initiated.
Patent GB-535791-A (GB)
Title: Improvements relating to personal wear
IPC: A41F3/02
Filed: 1939-10-20
Abstract: 535,791. Supporting trousers &c. BOYLAND, T. Oct. 20, 1939. No. 28354. [Class 141] For supporting trousers by means of braces of the kind described in Specification 464,680, the trousers are provided with three flexible loops 3, Fig. 1, of the same material as the trousers, but reinforced by wire or other cord, these loops being permanently secured to the trousers and spanning the normal button positions. Behind the front loops there may be provided additional loops 5, Fig. 2, which are passed through tapes 6 usually provided on pants and then engaged by the braces, whereby the pants are supported.
Patent GB-698067-A (GB)
Title: Improvements in electrical equipment comprising a plurality of ward-leonard systems
IPC: H02P7/34
Filed: 1951-12-04
Abstract: 698,067. Exciting dynamos; automatic speed control systems. METROFOLITANVICKERS ELECTRICAL CO., Ltd. Dec. 4, 1951 [Dec. 4, 1950] No. 28431/51. Classes 35 and 38 (iv). [Also in Group XXXVII] Two motors 1, 2, which are adapted to drive the rolls of a reversible rolling mill are supplied from Ward-Leonard generators 3, 4, having field windings 5, 6, excited by cross-flux machines 7, 8. Field windings 9, 10 of the motors are supplied from a voltage source 11 through cross-flux exciters 12, 13, arranged as boosting-bucking machines. The exciters 7, 8 are controlled by a potentiometer 14 connected to the main control windings 15, 16, which are opposed by windings 17, 18 responsive to the voltage of the generators 3, 4. Further field windings 19, 20 of the exciters 7, 8 are connected to windings 21, 22 which are in transformer relation with the field windings of the main generators. In this manner, the rate of change of voltage of the generators 3, 4, and therefore the acceleration of the motors, is regulated. The exciters 7, 8 also have control windings 23, 24, supplied through transformers 25, 26, the primary windings of which are in the Ward-Leonard circuits so that excessive rate of change of motor current is prevented. In addition, portions of the secondary windings of the transformers 25, 26, are connected to the secondary brushes of the exciters 7, 8 so as to influence directly the output of these machines. The equalization of the no-load voltages of the generators 3, 4 is effected by means of exciter windings 27, 28, connected between the positive terminals of the Ward-Leonard circuits which has a common negative point at 29. The windings 27, 28 are thus subjected to the difference between the generator voltages and act upon the associated machines 7, 8 so as to remove this difference. The relative field strengths of the motors are controlled by means of potentiometer 30 which influences the distribution of excitation current of windings 31, 32, on the machines 12, 13, and is ganged with potentiometer 33 controlling windings 34, 35 which oppose the windings 31, 32. Suitable positioning of the sliders of the potentiometers 30, 33, enables the relative speeds of the motors to be maintained substantially constant although adjustment of a rheostat 36, which is inter-related with that of the potentiometer 14, alters the degree of field reduction of the main motors. The amount of field weakening of the motors is limited in the event of an overload by means of a circuit comprising saturable reactor 37 which operates in the manner described in Specification 698,065. Windings 40, 41 on the exciters 7, 8 are energized in response to the difference of the armature currents of the motors 1, 2, so as to compensate for any inequality of the torques of the motors. Resistors 42, 43 are provided in the compensation circuits 27-28, 40-41, and are simultaneously regulated in contrary senses so that the relative effectiveness of these circuits may be adjusted. Specification 698,064 also is referred to.
Patent GB-730897-A (GB)
Title: Process of pickling metals
IPC: C23G1/36
Filed: 1952-11-12
Abstract: Metals, particularly iron and steel, are pickled in an acid other than phosphoric and then in phosphoric acid, the metal content of the phosphoric acid bath being kept below a predetermined amount by the passage thereof through one or more ion exchangers which are regenerated by using the acid to be used in the first pickling stage. The first used acid is preferably sulphuric, the ion exchanger is of polystyrene with active sulphonic and/or carboxylic acid groups, and either pickling acid may contain inhibitors, wetting agents, emulsifiers or grease solvents, e.g. isopropanol, butyl glycol.ALSO:Metals, particularly iron and steel, are pickled in an acid other than phosphoric and then in phosphoric acid, the metal content of the phosphoric acid bath being kept below a predetermined amount by the use of one or more ion exchangers which are regenerated by using the acid to be used in the first pickling stage.  The first used acid is preferably sulphuric, the iron exchanger is of polystyrene with active sulphonic and/or carboxylic acid groups, and either pickling acid may contain inhibitors, wetting agents, emulsifiers or grease solvents, e.g. isopropanol, butyl glycol. Phosphating may occur.  Prior to pickling, the metal may be subjected to the action of an alkali melt.
Patent GB-622205-A (GB)
Title: Improvements in connecting devices for telephone exchanges
IPC: H04Q3/00
Filed: 1945-10-29
Abstract: 622,205. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. Oct. 29, 1945, No. 28640. Convention date, Nov. 17, 1944. [Class 40 (iv)] Signals coming in over a junction and composed of either an impulse series of one kind of current or an impulse series forming a code containing impulses of current differing in frequency, for example, are received by a common device containing means to separate the different kinds of current and all the signals of whatever kind are recorded by one and the same cross-bar switch. In the 3-digit register shown, impulses which may be either of two frequencies are received on wires a and band separated by filters F1 and F2 so that impulses of one frequency actuate relay R1 and impulses of the other relay R2. When the register is taken into use, line c is connected to positive battery. If relay R1 acts, slow release relay R3 follows and selecting magnet SM1 is moved by its winding to negative and held by its other winding. On release of R1, R4 energizes and locks and causes operating magnet HM to close its contacts with the SM1 bar. Owing to the connection of the h1 group of contacts, repeated operation of R1 causes successive action of magnets SM1 ... SM0. At the end of a series of RI impulses, R3 releases more quickly than R4 and magnet BM1 operates and locks up over contact 64 and its contacts corresponding to the last operated selecting magnet are made and held as record. R5 then releases the other magnets and subsequent trains of impulses are recorded by magnets BM2, BM3, &c. If the impulse train contains impulses of the second frequency, these actuate relay R2 and not R1. The selecting magnets are again actuated, but the group of contacts h2 and not hl is effective. The first magnet that can be operated by R2 is SM3. The h2 connection of SM1 leads to SM6, that of SM2 to SM8 and SM3 to SM9. Thus, if each impulse of the different frequencies is called R1 and R2 respectively, the apparatus is permanently ready to operate on the code shown in Fig. 2 as well as on ordinary uncoded trains of R1 impulses.
Patent GB-891977-A (GB)
Title: Power strap tensioning tool
IPC: B65B13/02
Filed: 1960-08-18
Abstract: 891,977. Powered strap tensioners. SIGNODE STEEL STRAPPING CO. Aug. 18, 1960 [Sept. 24, 1959], No. 28644/60. Class 45. A powered (air motor 20) strap tensioning too: has a main frame 12 having a laterally extended foot 14 across which the strapping extends and slides, a tensioning wheel 18 hav ing a cylindrical strap engaging surface 154, a frame 16 mounting the wheel, for rotation in strap tensioning direction, extending across and closely adjacent the foot 14 so as to engage the strapping between the foot and the wheel, the frame 16 being pivotally mounted on the main frame 12 for limited swinging movement of the tensioning wheel toward and away from the foot 14. The tool also comprises biasing means (96, 100, 102) acting on the frame 16 urging wheel 18 into strap engaging positions and resilient stop means including a spring 128 carried by either the main frame 12 or the frame 16 and interposed therebetween to limit movement of the wheel 18 toward the foot 14 when there is no strapping in the tool but permitting movement of the wheel 18 into engagement with the strapping during the strap tensioning operation.
Patent GB-518997-A (GB)
Title: Improvements in parachutes
IPC: B64D17/00
Filed: 1938-10-04
Abstract: 518,997. Parachutes. TINSSONNIER, G. Oct. 4, 1938, No. 28766. Convention date, Oct. 4, 1937. [Class 4] A parachute has a composite surface made up of elements 1 which are impervious and elements 2 which are relatively porous. The elements may be arranged in various manners, and the canopy may be made of porous tissue lined, over certain zones, with impervious material. 'To reduce the opening shock further, the shroud lines connected to the loops 14x in the middle of the impervious sectors 1 may be longer than the others, so that air can escape from under these sectors at the moment of opening.
Patent GB-896067-A (GB)
Title: Titanium dioxide pigment particles and process of producing same
Inventor: WHATELY WALTER ROYE
IPC: C09C1/36
Filed: 1960-08-19
Abstract: Dry titanium dioxide pigment particles of improved dispersibility, having at least partly adsorbed on the particles from 0,01% to 3% by weight of a non-ionic water-soluble p  polyhydric alcohol containing from 4 to 10 carbon atoms, may be prepared by depositing the alcohol on the particles from water or organic solution, for example by slurrying and drying the slurry. Alternatively the particles may be mixed with the alcohol and introduced as a jet into a stream of superheated steam moving at supersonic velocity, whereby the alcohol is uniformly distributed. Suitable polyhydric alcohols include the fully reduced sugar alcohols, which contain one hydroxyl group for each carbon atom in the molecule, although polyhydric alcohols wherein at least half of the carbon atoms carry one hydroxyl group each.  Also suitable are those polyhydric alcohols wherein the non-quaternary carbon atoms carry one hydroxyl group each.  Mannitol, sorbitol, fructose, dextrose, lerulose, pentaerythritol, anhydroenneaheptetol, invert sugar (a -D-glucopyranose+b -D-fructofuranose), and 2-methyl1,2,3-propanetriol, are specified. The titanium dioxide pigment may in addition contain small amounts of alkali metal and alkaline earth metal salts as conditioning agents, salts of other metals such as antimony, chromium, and zinc, as brighteners and nitile promoters, and the hydrous oxides of aluminium, titanium, zirconium, silicon, and similar elements as agents improving the colour and chalk resistant values of the pigment.  Extenders, for example calcium sulphate, barrium sulphate, or lithopone, may also be present.
Patent GB-535402-A (GB)
Title: Improvements in or relating to artificial leather
IPC: D06N3/12
Filed: 1939-10-28
Abstract: 535,402. Agglutinated fibrous materials; compound sheet materials. FRIEDMANN, A. Oct. 28, 1939, No. 28910. [Class 140] A leather substitute is made by treating loose fibrous material first with an aqueous liquid comprising a dispersion of a protein substance of animal origin, e.g. milk, gelatine, a rubber dispersion, e.g. latex and starch, e.g. potato starch, then with a tanning bath comprising an organic acid and finally consolidating by pressure. The fibrous material may be cotton wool, cotton waste, wool, silk or artificial silk. Rubber includes gutta percha, balata and rubber derivatives such as chlorinated rubber. A preferred tanning bath comprises acetic acid, tartaric acid and borax, to which pigments may be added. The material may be dyed before or after treatment. A plurality of bats of treated material may be consolidated preferably in such a manner that the directions of successive layers of fibres are at right angles. According to the Provisional Specification the product may be coated with a cellulose varnish and impressed with a leather pattern.