baber/WOPTO huggingface dataset:
Patent GB-1379243-A (GB)
Title: Welding electrodes and fluxes therefor
IPC: B23K35/36
Filed: 1971-03-17
Abstract: 1379243 Welding by fusion BRITISH OXYGEN CO Ltd 17 March 1972 [17 March 1971] 7146/71 Heading B3R [Also in Division C7] A self shielding welding electrode comprises a tubular sheath 2 with at least one inward extension 4 in contact with a core wire or tube 6, the space 8 between the sheath and core containing a flux composition in per cent wt. 45-50 at least one metal fluoride, 10-30 MgO, 10-30 at least one alloying additive, 5-20 at least one oxide which is reduced during welding, other than MgO, up to 5 FeMn, up to 2 FeSi, > 2 < 5 at least one metal carbonate. The sheath and core are preferably rimming steel and the flux forms 19-24% of the total electrode weight. The fluoride is preferably AlF 3 , an alkali metal or alkali earth metal fluoride, e.g. CaF 2 , the alloying additive may be Al, Cr, Fe, Mg, Mo, Nb, Ni or alloys of two of these metals, the oxide may be Fe 3 O 4 , TiO 2  or NiO and the carbonate may be an alkaline earth metal carbonate, e.g. CaCO 3 .
Patent GB-742406-A (GB)
Title: Improvements in or relating to apparatus responsive to the frequency of alternating currents or speed
Inventor: ANTRICH DAVID
IPC: G05B1/04
Filed: 1953-03-16
Abstract: 742,406. Frequency measurements. GENERAL ELECTRIC CO., Ltd. March 5, 1954 [March 16, 1953], No. 7230/53. Addition to 699,036. Class 37. [Also in Groups XXVI and XXXVIII] Apparatus for measuring the speed of a rotating shaft as described in the parent Specification comprising a tachometer generator 10 feeding two parallel series-resonant circuits 12, 13 and 14, 15, the difference in voltage between capacitors 13, 15, which is indicative of the speed divergence from a known speed, being rectified at 16, 17 and fed to a voltmeter (not shown), is associated with an over-speed trip relay 24. The difference voltage is fed through a further rectifier 22 to ensure it is an overspeed and not an under-speed voltage, and a calibrated variable resistor 23, and at a predetermined speed established by resistor 23, polarized relay 24 is operated to energize a brake or alarm device 26. The apparatus may also be used to determine the frequency of an A.C. supply.
Patent GB-558425-A (GB)
Title: Improvements in or relating to processes for the protection of magnesium and magnesium base alloys against corrosion
IPC: C23C22/24
Filed: 1942-05-28
Abstract: 558,425. Protecting metals. MAGNESIUM ELEKTRON, Ltd., and BUSHROD, C. J. May 28, 1942, No. 7233. [Class 82 (ii] The resistance to corrosion of magnesium and magnesium base alloys is improved by subjecting them to treatment preferably at atmospheric temperature with an acqueous solution containing a bichromate and 5-15 parts of concentrated nitric acid is 100 parts of water. When using sodium or potassium bichromate, 10-20 part and 100 parts of water are used and preferably 6-10 parts of acid in 100 parts of water. Specifications 287,450, [Class 82 (ii)], and 353,415 are referred to.
Patent GB-670279-A (GB)
Title: Improvements in or relating to mechanism
Inventor: HICKS GEORGE JAMES
IPC: F16D3/04
Filed: 1949-03-16
Abstract: 670,279. Couplings; toothed gearing. MINISTER OF SUPPLY. April 20, 1950 [March 16, 1949], No. 7242/49. Classes 80 (i) and 80 (ii). Means for the automatic compensation of backlash and wear in mechanically moving systems consists of a pair of wedges arranged between two elements and urged to move relatively to one another in such a direction as to tend to force the said elements further apart. As applied to an Oldham's Coupling, in which the translational movement of an intermediate member 5 is facilitated by ballbearings in V-grooves 10, the undersides of ball races 12a, 12b have sloping surfaces engaging wedges 13a, 14a, 13b, 14b,. Fig. 2, urged apart by compression springs 15a, 15b. The intermediate member 5 has a fixed pin 17, projecting an equal amount into two transverse perpendicular slots 11, 11' in the driving and driven members and abutting against projecting studs 18, 18' anchored in these slots: The slot 11' houses two pre-loaded compression springs 19', 20<SP>1</SP> bearing against collars 19a<SP>1</SP>, 19b' which overlap the stud 18'. On translational movement of either the driving or driven member, one of the springs 19', 20' is further compressed by the pin 17 carrying one collar with it, while the other spring remains the same length. The coupling thus has a self-centering action. The slot 11 has similar compression springs. As applied to two hollow shafts (not shown), slidable axially one within the other and keyed together, a key fits into an axial groove on the inner shaft and projects radially into an axially extending slot in the outer shaft. The key is recessed and houses a pair of oppositely moving, spring urged wedges which move so that they take up wear at the sides of the slot and groove. The entire assembly is enclosed in a sleeve. As applied to toothed gearing, a bevel gear is formed of two disc portions, one having sector-shaped claws 32, 33, Fig. 5, engaging with sector-shaped claws 34, 35 on the other. Between the adjacent faces of the claws are wedges 38, 39 urged outwardly by bowed springs 40. When the wedges move, the effective thickness of the teeth is increased by the relative rotation between the two gear portions. The wedges engage semi-circular saddlekeys 41, 42. In high speed mechanism, the springs 40 may be dispensed with, the action of centrifugal force on each wedge 38, 39 then supplying the necessary outward thrust.
Patent GB-249667-A (GB)
Title: Improvements relating to inductance coils for the reception of wireless telegraphy and wireless telephony
IPC: H01F27/00
Filed: 1925-03-18
Abstract: 249,667. McKichan, J. J. March 18, 1925. Thermionic amplifiers and detectors.-An inductance coil provided with a plug-and-socket mounting has its general shape quadrilateral, the lengths of two sides being greater than twice the lengths of the other two sides, and the depth of the coil being less than half the length of either of the longer sides. Coils constructed as above are receptive and rejective to particular wavelength bands, and when their connections are reversed, the reception and rejective properties are also reversed for these wave-lengths. The coils can be regeneratively coupled in one, or in a number of stages as shown in Fig. 3, the coils 13 - - 15 being regeneratively coupled to the tuned coils 8, 10, 12. The anode coils 10, 12 have regenerative coupling on both sides and a further coil may be connected on the uncoupled side of the aerial coil 8. All the coils are adjustable, but the main adjustment is made between coils 8, 13. Specifications 234,887 and 239,561, [both in Class 37, Electricity, Measuring &c.]. are referred to.
Patent GB-713214-A (GB)
Title: Improvements in or relating to rear wheel suspensions for motor-cycles
Inventor: SAVORY RAYMOND
IPC: B60G15/06
Filed: 1952-03-21
Abstract: 713,214. Hydraulic dampers. GIRLING, Ltd. March 17, 1953 [March 21, 1952], No. 7310/52 Class 108(3) A suspension unit for the rear wheel of a motorcycle comprises a coiled spring e in combination with an hydraulic damper n, the spring abutting between a collar on the piston rod (not shown) of the damper and a sleeve or ring s of which the axial position on the body of the damper is adjustable by moving it angularly, and which is positively located in each of two or more positions. As shown, the ring abuts a second angularly-adjustable ring t. A projection x on the ring t engages a recess y on a cam surface w provided on the ring s when a greater pre-compression of the spring e is required (as shown). When less pre-compression is required (e.g. when there is no pillion passenger) the rings s, t are relatively rotated so that the projection x engages a lower part w<1> of the cam surface w. Holes z (or notches) are provided for the insertion of tommy bars. but the sleeves may alternatively be knurled. In a modification, Figs. 1, 2 (not shown), the ring t may be replaced by diametrically opposed lugs welded or brazed to the shock absorber casing.
Patent GB-102788-A (GB)
Title: An Improved Fastening Device for Boots and Shoe Laces, Stay Laces, Packing Case Cords and the like.
Inventor: HANSEN VIGGO
IPC: A43C7/00
Filed: 1916-05-23
Abstract: 102,788. Hansen, V. May 23, 1916. Lacing-fastenings. - A fastening for boot and shoe laces, stay laces, packing-case cords, &c. consists of a pair of socket members 1, 2 having interengaging hooks 8, 7. The lace ends are inserted in the tubular parts 3, 4 and passed out through holes 5, 6 and knotted. In modifications, the sockets may have slots 13 with side branches 14, or a series of keyhole slots in one of which the lace is wedged.
Patent GB-489396-A (GB)
Title: Improvements in driving arrangements for vehicles
IPC: F16H47/06
Filed: 1937-03-12
Abstract: 489,396. Hydraulic transmission of power ; change-speed gearing. AUTO UNION AKT.-GES. March 12, 1937, No. 7365. Convention date, March 12, 1936. [Class 69 (ii)] [Also in Group XXIV] A motor vehicle is propelled by an hydraulic transformer in combination with a mechanical change-speed gear having a step-up ratio. Thus, in the case of a two-speed mechanical gear having a direct drive and an " over-speed,"' the vehicle is driven through the direct drive at low and moderate speeds, but at higher speeds the over-speed ratio is brought into use and the transformer speed is reduced so that it works more efficiently. In the construction shown in Fig. 2, the driving runner 2 is fixed to the driving shaft 6 and the driven runner 3 to a shaft 10 driving the vehicle propeller shaft 19 through two-speed gear controlled by a sliding clutch 24. The gear train 26, 21 drives the shaft 19 at a higher speed than the shaft 10, and the train 25, 20 drives the shaft 19 at the same speed as shaft 10. In the construction shown in Fig. 3, the change-speed gear is arranged before the transformer 2, 3, 4, and drives the input shaft 6<1> thereof either directly through a clutch 28 or at a higher speed through the gear trains 25, 20 and 21, 26.
Patent GB-450661-A (GB)
Title: Improvements relating to the removal of sludge from oil accumu-lating in sumps of apparatus such as viscous type air filters
IPC: B01D21/02
Filed: 1936-03-12
Abstract: Oil passing by a pipe f into the sump a of a viscous type air filter or like apparatus is freed from sludge by settling on a layer of water w, passing in water by a pipe i beneath a canopy k so as to lift the oil layer o through a pipe c to a clean-oil tank until sludge appears in a sight glass on the pipe c, and then running off the sludge layer n and water through a drain pipe g, leaving a layer of water on which the next batch of used oil settles.  Specification 445,035 is referred to. <PICT:0450661/III/1>
Patent GB-154503-A (GB)
Title: Improvements in electric controlling switches
IPC: H01H29/10
Filed: 1920-03-12
Abstract: 154,503. Pudumjee, P. H. Match 12, 1920. Switches.-A double glass vessel a of hour-glass shape contains finely divided metallic powder which allows a fan, lamp, or other circuit to be closed for a particular time. Conducting-wires 1, 2, 3 enter each bulb and are connected to the terminals of a switch c. Another wire 4 is common to both bulbs and is connected to the socket for the lamp &c. connexion. The powder vessel is enclosed in a box open at one side, the switch c being attached to the opposite outer side.
Patent GB-1389564-A (GB)
Title: Lenses
IPC: G02B25/00
Filed: 1972-02-17
Abstract: 1389564 Biocular magnifying lens PILKINGTON P E Ltd 26 Jan 1973 [17 Feb 1972] 7510/72 Heading G2J A biocular magnifying lens faster than f/1.0 has a front part, a middle part and a back part, the front part being convergent and having a focal length between + 2.5F and + 8.0F (where F is the focal length of the complete lens); like middle part being convergent and having a focal length between + 1.6F and + 4.5F, there being a divergent element included in at least one of the first and middle parts and in which the back part comprises a component convex to the front and in which lens spherical aberration introduced by convergent elements is corrected by the front surface(s) of the divergent element(s), astigmatism is controlled by the spacing between the middle and back parts and the parts are arranged to effect cornia correction. Optical data are given.
Patent GB-416093-A (GB)
Title: Improvements in or relating to wind screens
IPC: B60J1/20
Filed: 1933-03-13
Abstract: 416,093. Gun turrets. BOULTON & PAUL, Ltd., Norwich, and NORTH, J. D., Hill House, Eaton Hill, Norwich. March 13, 1933, No. 7551. [Class 92 (i).] A gun-turret particularly for use on aircraft embodies a windscreen having a vertical, horizontal, or inclined slot-like aperture 5, along the whole or part of each edge of which and spaced therefrom is fixed a deflecting-vane 6, the air-pressure in the space between the vanes being reduced, by the air-flow 7 around each vane, to a value approximating that of the air-pressure behind the screen. Each edge of the aperture may be formed with a forwardly-projecting lip 10.
Patent GB-164517-A (GB)
Title: Improvements in and connected with belt gearing
IPC: F16H7/22
Filed: 1920-03-15
Abstract: 164,517. Clayton M. G., and Sherlock, L. I. March 15, 1920. Operating belt forks.-A belt-shifting device and a countershaft are supported by rotatably adjustable rings secured to hangers. The bearings b of the countershaft have trunnions b<1> swivelling in slots d' in a ring d secured to the hanger a<1> by threepoint cramps c engaging a flange as on the hanger. An adjustable ring similarly secured to the other side of the hanger has an arm e carrying the belt-fork bar f, which is rendered adjustable by rotation by means of a sleeve g fixed by a screw g<1>. A bracket h, Fig. 7, mounted adjustably on the bar f carries the belt-fork operating device, which is so constructed that movements of the belt forks f<1> in both directions is effected by pulling a cord or rigid rod m in one direetion. A wheel n having a crank-pin o<1> connected to the forks by a rod p is locked in two positions by a lever q engaging notches n<1>, and is operated by a pawl on a wheel j, which carries also a pin l to engage a trigger r and raise the lever q. After actuation the wheel j and operating handle are returned to the normal position by a spring or weight. A bracket o carrying the pin o' is adjustable in a slot n<3> in the wheel n. A spring s returns the parts to the normal position after a partial movement of the crank-pin o<1>, through less than 90‹. The forks f<1> are fixed in clamps adjustably secured to the bar f.
Patent GB-766058-A (GB)
Title: Improvements in or relating to a magnetic clutch
IPC: F16D37/02
Filed: 1955-03-16
Abstract: 766,058. Electromagnetic couplings. EATON MANUFACTURING CO. March 16, 1955 March 26, 1954], No. 7650/55. Class 35. A magnetic powder clutch has its driving or driven member comprising two rigidly connected concentrically spaced magnetic elements with an annular field coil carried by one of the said elements, the other member comprising a magnetic slotted sleeve extending inside the said space. Fig. 1 shows a clutch having a driving member 5 having an outer cylindrical portion 9 of ferromagnetic material which is joined by a non-magnetic cup-shaped part 15 to an inner field structure 17. Within the annular space provided between the cylinder 9 and the field structure 17 there is located without touching the driven member consisting of ferromagnetic sleeve 65 integrally joined to a supporting member 59. The sleeve 65 has two sets of grooves 67 and a central groove 69. The magnetic powder M has two annular storage spaces 99, 101 provided in the driving member 5. When the field coil 43 is energized or deenergized the powder M respectively moves in or out the working air gaps 71, 72, 73, 74 and this movement is facilitated by the provision of a number of through slots 77, 79 and notches 81 in the sleeve 65, as shown in Fig. 2. A non- magnetic ring is fitted at the outer periphery of the coil 43. Specifications 677,534, 729,956, 758,621 and 766,057 are referred to. Reference has been directed by the Comptroller to Specification 649,553, [Group XXXIV].
Patent GB-739096-A (GB)
Title: Tribromosteroids
IPC: C07J5/00
Filed: 1953-03-19
Abstract: The invention comprises 3-acyloxy-5,6-21-tribromopregnane-20-one where the acyl radical is derived from an organic carboxylic acid preferably containing from 1 to 8 carbon atoms, and the preparation thereof by reacting a 3,20-diacyloxy-5,20-pregnadiene with about two molar equivalents of bromine in an inert organic solvent at a temperature of about minus 40 DEG  to about 40 DEG  C.  Suitable inert solvents are methylene chloride, chloroform and methylchloroform.  The reactant for the above process may be obtained by reacting a 3-hydroxy- or 3 - acyloxy - 5 - pregnene - 20 - one with an isopropenyl acylate, e.g. isopropenyl acetate, in the presence of an acidic catalyst, e.g. p-toluenesulphonic acid, sulphosalicyclic acid or sulphoacetic acid.  The acyloxy groups in the products and reactants in the above process may be derived from formic, acetic, propionic, butyric, valeric, hexanoic, heptanoic, octanoic, phenylacetic, toluic, benzoic, cyclopentylcarboxylic, cyclohexylcarboxylic and b -cyclopentylpropionic acids.  In the example 3b  - acetoxy - 5,6, 21 - tribromopregnane-20-one is prepared.  The following compounds are also obtainable: 3a -acetoxy-, 3b -propionyl-oxy- and 3a -propionyloxy-5,6,21-tribromopregnane-20-one.  3a , 20- and 3b , 20-diacyloxy-5,20-pregnadienes are obtainable by reacting 3a -hydroxy- or 3b -hydroxy-5-pregnene-20-one with an acylating agent such as a ketene, an acid, an acid anhydride or an acid chloride, in an organic solvent such as pyridine, benzene or toluene, and reacting the thus produced 3a - or 3b -acyloxy-5-pregnene-20-one with an isopropenyl acylate such as isopropenyl acetate in the presence of an acidic catalyst, e.g. p-toluene-sulphonic acid, sulphoacetic acid or sulphosalicyclic acid.  Alternatively, the compounds may be prepared by the direct acylation of 3a - or 3b -hydroxy-5-pregnene-20-one with an isopropenyl acylate as referred to above.  3 - Acetoxy - 21 - iodo - 5 - pregnene - 20 - one is prepared by treating 3-acetoxy-5,6,21-tri-bromo-pregnane-20-one with potassium iodide and ethyl alcohol.
Patent GB-837903-A (GB)
Title: Internal combustion engine installations with supercharging and indirect power transmission
IPC: F02D1/00
Filed: 1957-03-07
Abstract: 837,903. Regulating. SULZER FRERES S. A. March 7, 1957 [Sept. 15, 1956], No. 7660/57. Class 7(6) [Also in Group XXIX] In a supercharged engine 1 in which the fuel supply is adjusted by a speed governor 9 and by means responsive directly or indirectly to supercharging air pressure and in which a torque converter is adjusted by the governor 9 in accordance with engine speed, the connection between the governor 9 and the fuel control means 44 includes a limiting device which prevents the fuel supply exceeding a maximum dependent upon the supercharging pressure, the action of the limiting device being temporarily delayed to permit for a brief period, e:g: during acceleration, an increase in the fuel supply beyond the aforesaid maximum. The-engine 1 drives a main generator 2, supplying the traction motors of a locomotive, and an auxiliary excitation generator 3, the torque on the engine being controlled by the governor 9 through adjustment of a resistance 26 in the excitation circuit of the main generator 2. The supercharging air is delivered by an exhaust driven blower 5, the supercharging pressure acting upon a spring-loaded control piston 50 co-operating with fluid escape ports 48 in a tube 40 connected to a piston 35 sliding in a servo-piston 16 which is controlled by governor 9 and is connected to. the control valve 29 of a servomotor 28 connected to the torque control means 27. During normal operation the piston. 50 closes ports 48 so that piston 35 is held by the pressure of the servo-fluid in chamber 37 against a shoulder in piston 16 and moves therewith so that the movements of piston 16, under the control of the governor 9 actuating the control.valve 15, are transmitted positively through piston 35 and its extension 40 connected to the lever system 41...43 to the fuel control rod 44, a decrease in engine speed moving rod 44 to increase the fuel supply and simultaneously moving the valve 29 '  to reduce the torque on the engine. If the supercharging pressure drops below the desired value, piston 50 uncovers ports 48 opening a fluid leak from chamber 37 which causes the piston 35 to be moved downwards by spring 36 relative to piston 16, reducing the fuel supply and limiting it to a lower maximum. The ports 48 throttle the escape of fluid from the chamber 37 so that during acceleration the piston 35 moves upwards temporarily with piston 16, permitting a temporary excess fuel supply, and is returned slowly to its correct limiting position determined by piston 50 as the fluid leaks through ports 48. The piston 50 may be controlled by supercharging air pressure or by exhaust gas pressure and the fluid pressure servomotors may be replaced by similar electrical means. The electric generator may also be replaced by an hydraulic torque converter.
Patent GB-113208-A (GB)
Title: Improvements in or connected with Flat Brushing or Cleaning or Stripping Arrangements for Carding Engines.
Inventor: HURST SAMUEL
IPC: D01G15/78
Filed: 1917-05-30
Abstract: 113,208. Hurst, S. May 30, 1917. Carding-engines.-In the brushing, cleaning, or stripping of the flats. the comb a<1> by which the brush B is cleaned 'is given a swinging motion through the bristles &c. of the brush, and the brush shaft g is reciprocated longitudinally. In the arrangement shown in Fig. 3, a lever d on the comb shaft is operated by a slotted link e operated by an eccentric f on the brush shaft. The comb shaft is provided with an adjustable stop which engages with the frame, and limits the extent to which the teeth penetrate into the brush. Other arrangements of link and cam mechanism are described for oscillating the comb. For reciprocating the brush shaft longitudinally, a worm m<1> on the brush shaft is caused to engage with an eccentrically mounted worm wheel n, the shaft o of which is anchored by links o' to the frame.
Patent GB-1038410-A (GB)
Title: Weighing machines
IPC: G01G5/04
Filed: 1964-02-25
Abstract: 1,038,410. Bearings. F. C. FARQUHAR. April 13, 1965 [Feb. 25, 1964], No. 7726/64. Heading F2A. [Also in Division G1] In a weighing machine in which a load supporting platform 1 is mounted in a housing 2 on one or more load cells 3, bearings in the form of horizontally disposed rods 5 are provided between the housing and the platform and/or between the movable and stationary parts of the or each load cell. According to the main embodiments, the rods 5 are each so supported by relatively reversed U-shaped straps 6, 9 (Fig. 5) which are fixed at their ends 7, 8 and 10, 11 to the vertical sides of the platform 1 and the walls of the housing 2 that each rod is supported sling-wise by at least one of the straps 6 and held in position by at least one of the straps 9. The straps, which may be of flexible metal strips, textile or metal cloth strips or may be in the form of wire cords or chains, are prevented from longitudinal movement with respect to the rods by being fixed to their associated rods by welding or by pins and screws or the like or by being arranged in grooves provided in the rods.