baber/WOPTO huggingface dataset:
Patent GB-1342813-A (GB)
Title: Disc brake units
IPC: F16D55/14
Filed: 1971-04-19
Abstract: 1342813 Multi-disc brakes LAMBERT BRAKE CORP 19 April 1971 [13 March 1970] 23676/71 Heading F2F  A multi-disc brake 20 for braking a rotating shaft or axle 28 comprises a housing 22 within which are mounted a pair of friction discs 24, 26 rotatable with the shaft 28 and also capable of limited axial movement on splines 68 and a pair Of actuating discs 30, 32 capable of limited rotative movement about the shaft 28 wherein the two actuating discs 30, 32 each comprise respective pairs of stamped sheet metal members 74, 82 and 76, 84 and the members 82, 84 are formed with embossed portions presenting opposed pairs of cam surfaces 86 and 88, 90 and 92, 94 and 96 which surfaces retain balls 98, 100, 102 therebetween so that rotative movement of the actuating discs 30, 32 moves them apart to clamp the friction discs 24, 26 between friction surfaces 78, 80 of the actuating discs 30, 32 and radial end walls 40, 42 of the housing 22. In the embodiment of Figs. 1-5 the two actuating discs 30, 32 are rotated in opposite directions by a linkage 34 which comprises a member 124 connected to any suitable mechanical or power operated actuating system and also connected to two links 128, 130 which are engaged in respective slots 142, 144 in the actuating discs 30, 32. The discs 30, 32 have respective lugs 116, 118 which project into openings in walls 48, 50 of the housing 22 which openings are partially defined by abutment edges 120, 122 which prevent unlimited rotation of the actuating discs 30, 32 but the housing 22 is also formed with inwardly extending projections 104, 106, 108, 110, 112, 114 which provide bearing surfaces for rotation of the actuating discs 30, 32. Springs 154, 156 between the discs 30, 32 normally pull them together. In the embodiment of Figs. 6-10 the members 82a, 84a have additional embossments 162, 164 with flat bottoms 166, 168 welded to members 74a, 76a at 170, 172. The links 128a, 130a are connected to ears 174, 176 and the bearing elements are replaced by pins 178, 180, 182 the pin 182 also serving as a stop.
Patent GB-707282-A (GB)
Title: Boron carbide containing aluminium and articles made therefrom
IPC: C22C29/00
Filed: 1952-09-22
Abstract: A very hard and tough composition with high tensile strength, suitable for use in tools, gauges, jet or sand-blast nozzles, turbine or impeller blades, wire-drawing dies, liners of cylinders or moulds, bearings, or as an abrasive, comprises boron carbide, 2-5 per cent. Al (calculated as aluminium apart from alumina), not over 2 per cent. Al2O3 and not over 1 per cent. impurities.  The boron carbide used may have the formula B3.8C-B5.4C, whilst the Al may be pure or contain not over 15 per cent. Al2O3 and not over 1 per cent. other matter (e.g. Fe, Si or Ti).  A powder mixture containing 80-90 per cent. boron carbide and 10-20 per cent. Al is heated in a graphite mould to a temperature of 1800-1900 DEG C. under a pressure of 500-2,500 lbs. per square inch.  The solid piece produced is then crushed and the fragments ball-milled with water for 20-30 hours to a particle size at least as small as 15 microns, so as to eliminate any aluminium carbide.  The Al content of the product may be adjusted to within the specified limits by adding boron carbide containing no Al, or aluminium-containing boron carbide with an excess of Al.  The product is then acid-treated, washed and dried.  Articles of the desired shape may then be produced by charging the dried powder into a graphite mould which is heated in a resistance furnace to a temperature of 1850-2325 DEG C. under a pressure of 1,500-2,500 lbs. per square inch, this pressure being maintained at the end of the process until the temperature has dropped to 1600 DEG C.
Patent GB-480721-A (GB)
Title: X-ray contrast media and the production of x-ray photographs
IPC: A61K49/04
Filed: 1936-08-29
Abstract: X-ray contrast media for use in radiography of the gall bladder, kidneys and veins consist of aqueous solutions or suspensions of water-soluble salts of di- and tri-iodo derivatives of acylamino carboxylic acids.  The preparations may be given by the mouth or by intravenous injection or by retrograde administration.  The salts may be the alkali or organic base salts of di- and tri-iodo hippuric acid or of the di- and tri-iodo derivatives of benzoyl-amino-butyric acid, benzoyl-alanine, or benzoyl sarcosine.  These compounds may be prepared in the manner described in Specification 465,994.  For administration per os, sugar or other flavourings may be added. Reference is made to Specification 361,437 which describes the use of soluble organic bromine or iodine compounds for examination of the urogenital system, to the inhalation of emulsions or suspensions of iodinated or brominated fatty oils and amides of iodinated alkyl sulphonic acids or alkyl sulphuric acid esters or pyridone-N-acetic acids for examination of the bronchial system, and to media for examination of the joints consisting of solutions of iodinated pyridine-N-acetic acids or iodinated or brominated fatty oils in liquids reducing capillary resistance, such as carbohydrates or glutinous substances of animal or vegetable origin.
Patent GB-1327705-A (GB)
Title: Display devices for use with coherent lihgt sources
IPC: G02F1/13
Filed: 1971-04-19
Abstract: 1327705 Modulating light SIEMENS AG 19 April 1971 [12 March 1970] 23722/71 Heading H4F [Also in Division G2] The granular appearance of an image produced by coherent light is reduced by directing the image on to a liquid crystal cell operated so as to exhibit a dynamic optical scattering effect. The cell may comprise liquid crystal material disposed between glass plates coated with a transparent conductor, e.g. cassiterite, or a thin layer of gold or silver.
Patent GB-1244818-A (GB)
Title: Process for production of a silver halide photographic emulsion
IPC: G03C1/08
Filed: 1970-05-15
Abstract: 1,244,818. Making photographic silver halide emulsions. FUJI PHOTO FILM CO. Ltd. May 15, 1970 [May 17, 1969], No.23746/70. Heading G2C. A photographic silver halide emulsion of increased contrast is made by precipitating the silver halide in colloid solution in the presence of a water-soluble iron compound in an amount of 10<SP>-7</SP> to 10<SP>-3</SP> mole per mole of silver salt used in the precipation. The iron compound may be organic or inorganic and a large list is given; compounds used in Examples are potassium ferricyanide, potassium ferrocyanide and ferric thiocyanate. Other salts which may be added are those of rhodium, iridium, nickel, copper, zinc, cadmium, mercury, lead, thallium, platinum, palladium and gold. The emulsion may also contain hydroquinone as an incorporated developer and formaldehyde and hardener.
Patent GB-1460973-A (GB)
Title: Ignition systems for internal combustion engines
IPC: F02P3/04
Filed: 1974-05-29
Abstract: 1460973 Ignition systems BROWN BOVERI & CIE AG 29 May 1974 [12 June 1973] 23849/74 Heading F1B An ignition system for an internal combustion engine comprises first and second terminals 18, 17 for connection to a direct current source 2, a contact breaker 1, an ignition coil 9 comprising a primary winding 9a and a secondary winding 9b, a first transistor 7 having its collector 7c connected to the primary winding and its emitter 7a connected by way of a resistor 8 to the first terminal 18, a second transistor 4 having its collector connected to the base 7b of the first transistor and having its emitter 4a connected to the second terminal 17, and a third transistor 30 having its emitter 30a connected to the base 4b of the second transistor, having its collector 30c connected to the contact breaker 1 and having its base connected to another ' resistor 31 which in turn is connected by way of a diode 32 to the second terminal 17 and which is also connected by way of a capacitor 33 and a further resistor 19 to the second terminal and by way of the capacitor to the contact breaker. If the engine on which the system is used remains stationary with the contact breaker 1 closed and the ignition circuit switched on a charging current which decreases with time flows to the capacitor 33. When the charging current supplied to the capacitor 33 becomes zero due to the rising charge thereon the transistor 4 and the transistor 7 are switched into the non-conducting state.
Patent GB-457381-A (GB)
Title: Improvements in and relating to installations for the parallel working of a number of high frequency induction furnaces
IPC: H05B6/08
Filed: 1936-08-31
Abstract: 457,381. Supply systems for highfrequency apparatus. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Aug. 31, 1936, No. 23861. Convention date, Sept. 4, 1935. [Class 38 (iv)] The windings of a number of high-fre quency induction fur naces supplied from a constant voltage gen erator are arranged ir parallel resonance circuits to each of which a variable condenser is connected in series whereby any furnace may be adjusted independently without affecting the others. Each parallel resonant circuit consisting of an induction furnace winding 4 in parallel with a variable condenser 5, is arranged in series with a variable condenser 2.
Patent GB-862299-A (GB)
Title: Trawling device
IPC: A01K75/04
Filed: 1958-07-25
Abstract: 862,299. Fishing trawl gear. PULSIFER, O. B. July 25, 1958 [Jan. 27, 1958], No. 24038/58. Class 48. Apparatus for controlling the depth at which a fishing net is trawled comprises a draw-bar 10 rotatably secured to a main frame 23A, 23B and adapted to be connected between a towing cable and the net, a pair of hydrofoils 22A, 22B rigidly attached to the main frame, a pair of horizontal stabilizing planes 14A, 14B for laterally stabilizing the hydrofoils, a pair of elevator control planes 25A, 25B pivotally mounted on the main frame and hydrostatic control means adapted to control the elevator control planes 25A, 25B. The hydrofoils 22A, 22B are secured to a tube 24 which passes through a nylon bearing in the forward part of the draw-bar 10. The hydrostatic control means comprises a cylinder 11 connected by a pipe 20 to a pressure air tank 29 in the hydrofoil 22B and containing a rubber bladder 40, Fig. 3, which presses against a piston 41 adapted to actuate a crank 32 connected to a pivot rod 13. Rods 28A, 28B extend from the pivot rod 13 to the pivoted elevator planes 25A, 25B. When the apparatus is placed in the water the air pressure within the cylinder moves the piston outwardly so that the elevator planes assume a position tending to draw the apparatus downwardly, but when the apparatus reaches a predetermined depth the water pressure acting on the piston pushes it inwardly to cause the elevator planes to assume a neutral position. Further descent causes the elevator planes to urge the apparatus upwardly. The horizontal stabilizing planes 14A, 14B are pivotally mounted to the hydrofoils 22A, 22B and are actuated by a pendulum 35.
Patent GB-464191-A (GB)
Title: Improvements in and relating to welding
IPC: B23K9/035
Filed: 1936-09-03
Abstract: 464,191. Uniting by fusion. UNION CARBIDE & CARBON RESEARCH LABORATORIES, Inc. Sept. 3, 1936, No. 24105. Convention date, Nov. 5, 1935. [Class 83 (iv)] In a process of seam welding parts in line or at an angle to each other, the back of the seam or the front and back of the seam are enclosed by a thick layer of unbonded granular refractory mineral material and weld metal is deposited in and along the seam from the front side of the work parts. Electric arc welding with carbon or with bare or coated metal electrodes, or gas or alumino thermic welding may be used. The refractory material must have a melting point not substantially higher than that of the metal to be welded and must be substantially free from gas-forming ingredients. It preferably consists of silicates of alkaline earth metals and of magnesium, preferably prefused to complete chemical reactions between the ingredients. Such a prefused material may consist of 31 per cent of CaO, 11 per cent of MgO, 52 per cent of SiO2, and 4 per cent of A12O3, to which 5 per cent of an alkaline earth fluoride may be added. The work parts 10, 11, which are separated by a square or bevelled gap, rest on or are clamped to the container 13 for the refractory material 14, which may also be pressed against the work by a metal plate 18 and pneumatic tube 17. The container may be slightly longer than the seam or may be short and moved along the seam during welding. It may extend beyond the end of the weld so that a bead 16 may be formed at the end, which may be subsequently cut off flush. The refractory'material is fused during welding and a bead of welding metal is formed at the lower as well as at the upper surface of the seam. In are welding the electrode 12 may be submerged in a material 14 preferably of the same composition placed on the front of the seam, as shown in Figs. 3 and 7.
Patent GB-184393-A (GB)
Title: Improved trouser braces, convertible into waist belts
IPC: A41F3/00
Filed: 1921-09-12
Abstract: 184,393. Steadman, W. T. Sept. 12, 1921. Belts; braces.-Braces adapted to be used as a belt comprise two shoulder straps a, b having length adjustments c and united by a ring d. A swivel snap hook e is loosely hung on the ring d and similar hooks f are carried on frames i at the free ends of the shoulder straps by means of eyes g and bridge members h. For use as a belt the hooks fare interengaged, or one hook f engages the opposite member h, and for use as braces tabs j are hung on the hooks e, f by means of rings k.
Patent GB-1113951-A (GB)
Title: Improvements in or relating to polishing apparatus for disc brake discs
IPC: F16D65/00
Filed: 1965-06-08
Abstract: 1,113,951. Disc brakes. ALFRED TEVES MASCHINEN - UND ARMATURENFABRIK KOMM. GES. 8 June, 1965 [9 June, 1964], No. 24185/65. Heading F2E. In a spot-type disc brake having pads 2 supported in a caliper 1 for movement into contact with opposite faces of a disc 6, a polishing bar 4 is disposed in advance of each pad (the disc rotating in the direction V) and is urged by a spring, arranged in a support plate 5 between the back of the bar and the split pin shown, to engage the disc with a pressure sufficient to remove any roughnesses on the disc surface in addition to any dirt or other foreign matter which may be present. Plate 5 is secured by bolt 3 to the caliper 1 and guides the bar for movement towards the disc while maintaining the axis E of the bar at an angle G to the radial direction F.
Patent GB-601671-A (GB)
Title: Improvements in or relating to electrical musical instruments
IPC: G10H3/16
Filed: 1944-12-05
Abstract: 601,671. Electrical musical instruments. MIDDLE DITCH, R. H. P., and HARRISON & HARRISON, Ltd. Dec. 5, 1944, No. 24245. [Class 88 (ii)] In an electrical musical instrument, reeds, vibrated continuously by an air supply, induce electric currents in adjacent electro-magnetic pick-ups and the currents are selectively used to produce the desired sounds. Reeds 1, Fig. 6, of steel or of brass carrying iron armatures, are tuned to cover the range of the instrument and vibrated by wind pressure so as to induce currents in windings around permanent magnets 3 located adjacent to the reed so as to pick up the fundamental and desired harmonic combinations. The outputs are fed through multiple key operated contacts 6, Fig. 1, and bus-bars to potential dividing resistances 7 which determine the amplitude of any desired harmonics. From the potentiometer 7 the currents pass through resistances 16, whose purpose is to prevent a direct connection between any two connected potentiometer tappings. The combined outputs, each comprising selected combinations of harmonics, are passed to a separate control unit 9 for each stop. These units consist of a transformer which, when its stop is drawn, has its primary circuit completed by a switch 11 and a short-circuit removed from its secondary by a switch 10, so that it is connected in series with the secondaries of all other operative stops. Each pick-up device on each reed is connected with the corresponding pick-ups on other reeds to a circuit as described and the final outputs are selectively connected in parallel to the output amplifier. The keys may operate the contacts 6 directly or through relays and in the latter case any desired keys may be coupled electrically. The attack may be varied by causing a resistance to be inserted in the key circuit during the early part only of the key stroke, and an additional set of reeds may be selectively vibrated as in a harmonium. A tone filter may be incorporated to minimize key clicks, the output of the generators being adjusted to overcome attenuation of the higher frequencies.
Patent GB-939404-A (GB)
Title: Windshield wiper blade assembly
IPC: B60S1/38
Filed: 1961-07-05
Abstract: 939,404. Windscreen wipers. ANDERSON CO. July 5, 1961 [Aug. 11, 1960], No. 24254/61. Class 138 (1). A windscreen wiper 10 includes pressure-distributing means having a continuously curved, concave, airfoil surface. Pivotally connected, spring urged yokes 14, 15 having inward facing, concave surfaces carry U-shaped members 26 riveted thereto with claw-like ends 27 slidably engaging a flexible backing strip 27 for a wiping element 16. Co-operating tabs 22, 24 on the yoke 14 and slots 30, 31 in the yokes 15 are provided. In operation, the reaction force " Y " to an outflowing wind vector "X," assists spring means in a wiper arm in urging the wiper element 16 towards the windscreen.
Patent GB-246542-A (GB)
Title: Electrolyzing fused baths
IPC: C25C7/00
Filed: 1924-10-30
Abstract: 246,542. McNitt, R. J. Oct. 30, 1924. Electrolytic furnaces.-In an apparatus for electrolysing fused salts the electrolyte is caused to flow through the cell or cells in excess, the temperature of each cell and the distribution of current between the cells being regulated by regulating the temperature and rate of flow of the entering electrolyte, and the undecomposed portion of the electrolyte being regenerated at a point outside the zone of electrolytic action and then returned to the cells. A plurality of cells 10 connected in parallel with a source of energy 11 are formed in a structure 12 of refractory bricks and fireclay surrounded by a layer of kieslguhr bricks. The cells are provided with anodes 14 supplied by graphite conductors 15 and separated from copper cathodes 16, mounted by means of spiders on copper conductors 18. by diaphragms 20 fitted with outlet pipes 22. The cells are fitted with covers provided with gas outlets 23. The bottoms 24 of the cells converge into longitudinal ducts 25 fitted with electric heaters 52, the ducts communicating at one end with reservoirs 26 which are cross-connected by a duct provided with an electric heater. The reservoirs 26 are fitted with pumps 28 which deliver the contents thereof to a central reservoir 31 through filters 29. The reservoir 31 is fitted with a pump 32 having a suction open to the reservoir and a discharge pipe 34 which runs the whole length of the furnace structure and then returns to a retort 41. The pipe 34 is provided with two-valved discharge branches 37 to each cell, the branches discharging into the cells at the tops thereof and at the tops of the anodes. Each branch is fitted with an electric heater and a water-jacket. The return pipe 34 is fitted with valves 43, 44 so that the excess may be delivered to the reservoir 31 or the retort 41, the latter having a discharge connection 53 to the former. The reservoirs 26 are fed from retorts 45 fitted with charging hoppers 46 and low voltage electrolyzers 48 through which the fused salt passes before entering the reservoirs 26. The retorts 41, 45 are fitted with oil or gas burners 47 and the waste gases therefrom may be utilized in a steam boiler. Two circulating systems operating at different temperatures may be used. The purifying and treating equipment may be in a common bath with the cells. The circulation may be intermittent or continuous and the cells may be connected in series both electrically and for the supply of electrolyte. In the case of cells connected in series electrically the stream of electrolyte flowing to and from the cells is continuously broken.
Patent GB-263542-A (GB)
Title: Automatic warning signal for use at road junctions
IPC: G08G1/02
Filed: 1925-09-30
Abstract: 263,542. Davidge, H. T. Sept. 30, 1925. Road signals. - Relates to apparatus of the kind in which a chamber of variable capacity charged with liquid is sunk in the road in the track of vehicles, a signal being operated by liquid displaced from the chamber when a load is applied thereto by a vehicle, and consists in the provision of a bar sunk in the road across the path of vehicles and two or more chambers as aforesaid arranged beneath the bar, one at each end, which chambers constitute the sole support for the bar. In the form shown in Figs. 1 and 2, a rigid tube 10 is provided with one or more branches 11 each of which communicates with a chamber 12 closed at the top by a diaphragm 13 held down by a cap 14. A central base in the cap admits a pin 15 which rests on the diaphragm. Each chamber is supported by a pedestal 16 bolted to a trough-shaped housing 17 sunk in the road. Loosely fitting the mouth of the housing is a bar 16 the underside of which carries petticoat pieces 19 which rest on the diaphragms 13 through pins 20. There is only slight play between the tops of the pedestal and the pieces 19 so that the movement of each diaphragm is limited. The pipe 10 is closed at one end and connected at the other end to a Bourdon tube 21 which when expanded makes the contacts 32 energizing a solenoid 33 which lifts a lever 35 making contacts 40 to light the lamp 42 and work a buzzer 41. The lever 35 is also connected to the piston of a cataract cylinder 39 charged with liquid which permits the piston to rise quickly but retards its fall. Modifications are described in which the chamber is formed by a thin-walled tube of circular or oval crosssection. In one form the tube is engaged directly by the vehicle and contains a bar to limit the deformation. In other forms the trough-shaped supports serve as stops for a petticoat piece in one with the road bar pressed down by the vehicle. In order to permit expansion and contraction of the liquid due to temperature changes a branch pipe 28 from the tube 10 leads to a small chamber filled with liquid acted upon by a ram 29 loaded with weights 30 and also by a screw-threaded manually operated plunger 31. The latter is to adjust the effective volume of the liquid.
Patent GB-156072-A (GB)
Title: Improvements in or relating to means for the extraction of foreign bodies that may be forced between twin pneumatic tyres while on the road
IPC: B60S1/68
Filed: 1920-08-23
Abstract: 156,072. Rispaud, C. A. C. Dec. 29, 1919, [Convention date]. Wheel-scrapers on vehicles. - A tinger I, mounted on a spindle A carried by a fixed bracket Sand normally projecting between the twin tyres P of a road wheel, removes foreign bodies, such as gravel, which may be loosely embedded between the tyres, but if the gravel &c. is too firmly embedded, the finger yields and partially rotates on the spindle A against the action of a spring, so that as the wheel rotates the noise produced attracts the attention of the driver. The finger is resiliently held in the normal position by symmetrical cam-faces on the finger I and on a sliding sleeve D which are kept in contact by a spring: R. Dirt &c. is excluded by a casing C.