baber/WOPTO huggingface dataset:
Patent GB-1039668-A (GB)
Title: Improvements relating to telephone system substation circuits
Inventor: LANE PETER JOHN
IPC: H04M1/58
Filed: 1964-07-28
Abstract: 1,039,668. Substation circuits; anti-side-tone circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 20, 1965 [July 28, 1964], No. 29987/64. Headings H4K and H4R. A substation circuit includes a one- or twotransistor oscillator which is arranged to oscillate in response to received ringing current and supply the oscillations to a transducer which normally serves as the transmitter of the substation ; upon operation of off-hook contacts the circuit is rearranged so that the transistor(s) of the oscillator form(s) a speed amplifying stage for the transmitter. A multi-winding induction coil provides positive feedback for the oscillator in the rest position of the substation and forms an anti-side-tone induction coil in the off-hook condition. Four similar circuits are described in which a single transistor may be used for both amplifier and oscillator, or two transistors for the amplifier with one or both of them being used for the oscillator. In all the arrangements the transistors are powered by exchange battery and in some arrangements biasing is stabilized by selenium rectifiers. Full-wave rectification of the alternating ringing current is made by a bridge giving bursts of oscillations at twice the frequency of the ringing current; by disabling half the bridge the same frequency is attained. An automatic line balancing network containing a varistor is provided and a further varistor across the line or a thermistor in series with it reduces the risk of false operation of the station by line transients. Two oppositely poled diodes connected in parallel across the receiver reduce "clicks."
Patent GB-905064-A (GB)
Title: Improvements in or relating to variable ratio steering mechanisms
IPC: B62D5/24
Filed: 1958-09-23
Abstract: 905,064. Steering mechanisms. BISHOP, A.E. Sept. 23, 1958, No. 30403/58. Class 80(1). [Also in Group XXXI] A vehicle steering-gear, particularly for power assisted mechanisms comprises a screwed steering-wheel shaft 11 actuating a nut 14 which has pins 20 thereon co-operating with diverging slots 22, 23 in a cam-plate 21 secured to the pitman shaft 12. This arrangement provides a high ratio steering in the straight ahead position but lower ratios towards the full lock positions. Hydraulic power may be applied to the plate 21 at 27 by a piston controlled by a valve spool 35 on the shaft 11 operated by slight initial movement of shaft on a steering movement, as described in Specification 818,483.
Patent GB-226026-A (GB)
Title: Improvements in machines for the manufacture of twist tobacco
IPC: A24B11/00
Filed: 1923-12-04
Abstract: 226,026. Cope, J. A., and Cope Bros. & Co., Ltd. Dec. 4, 1923. Tobacco. - In a machine for the manufacture of twist or roll tobacco, left-hand portions of tobacco leaves are fed face downwards from a table on the right-hand side of the machine to guide-rolls rotating in a clockwise direction. Adjustable guide-rolls 3 are driven by gear wheels 4 and are acted on by fixed cams 5 to give a sliding motion. The twist passes through a laterally-moving guard 7 and is then carried over a bobbin 8 rotating in a yoke 9 which is rotated in an anti-clockwise direction through a clutch and driving pulley 10. A brake 13, operated by a hand-wheel 12, exerts pressure on a loosely-mounted gear-wheel 14 to reduce its speed and thus vary the speed of the bobbin 8. Leaf springs exert pressure on the rolls 3.
Patent GB-280588-A (GB)
Title: Process for accumulating, conveying and consuming liquefied gases of low boiling point without loss
IPC: F17C13/08
Filed: 1927-11-12
Abstract: 280,588. Ges, f³r Industriegasverwertung, (formerly Studien-ges. f³r Gas-industrie), and Heylandt, C. W. P. Nov. 12, 1927. [A Specification was ?aid open to inspection under Sect. 91 of the Acts, Nov. 14, 1927]. Cold and heat retaining vessels.-An insulated container 38, Fig. 1. is supported by chains 37 which are constructed with recessed links a, Fig. 2, insulating links 39, or, sharp edged links c, to reduce conduction of heat.
Patent GB-1529788-A (GB)
Title: Plug and socket protector
IPC: H01R13/639
Filed: 1975-10-10
Abstract: 1529788 Plug and socket protector J B RANKIN 10 Oct 1975 [10 July 1974] 30484/74 Heading H2E A protective cover for an electrical plug and socket comprises a locating member, for securing to the socket, and a housing which engages the locating member so as to prevent access to the plug. The frame like locating member 11 (Fig. 5) is made of two identical parts 31 and 33, made of metal, and each member consists of a centre portion 39, two arms 35 and 37, their thickness being half that of the centre portions and a screw locating member 41. Each arm has a hollow 43 and a projection 45 for fitting the two parts together (Fig. 6). The locating member 11, when in position (Fig. 1), extends beyond the edges of the plate 3 of the socket 1. The housing 15 snap-fits on the locating member, and may be provided with integral lugs on the inside surfaces for fixing it to the locating member 11. The locating member, in alternative embodiments may be made of one piece, resilient or rigid.
Patent GB-247920-A (GB)
Title: Improvements relating to rectifiers for alternating current
IPC: H02M1/14
Filed: 1925-12-02
Abstract: 247,920. Rogers, E. S. Feb. 23, 1925, [Convention date]. Vacuum or lowpressure apparatus arrangements of; converting pulsating currents into steady continuous currents. - The plate circuits of thermionic valves employed in wireless reception apparatus &c. are supplied with substantially steady direct current from alternating current supply mains by means of a rectifier system comprising valves 33, 34 and a combined high and low frequency filter system. The valves 33, 34 are connected as shown to produce full-wave rectification to the secondary winding 39 of the supply transformer which is provided with an additional winding 35 for filament supply through a rheostat 41. The low-frequency filter comprises a choke 29, resistance 28, and condensers 23 - - 26. The supply to the plate circuit of a detector valve such as 2 in the wireless reception circuit shown is taken from terminals 15, 16 through a high-resistance rheostat 27 and high-frequency chokes 19, 20 which in conjunction with a high-frequency by-pass condenser 18 form a high-frequency filter to eliminate carrier wave oscillations from the supply transformer circuit. The supply to the plate circuits of amplifier valves such as 3 is taken from terminals 15, 17 connected to the low-frequency filter circuit through high-frequency chokes 19, 21 which in conjunction with a by-pass condenser 22 form a high-frequency filter.
Patent GB-1161891-A (GB)
Title: Hose Clamping Devices.
Inventor: COPONY EDWARD L
IPC: F16L3/01
Filed: 1966-07-27
Abstract: 1,161,891. Clamp fastenings. DRESSER INDUSTRIES Inc. 27 July, 1966 [27 July, 1965], No. 30511/66. Heading E2B. A hose clamping device for a dispensing hose 12 of a liquid dispenser includes a collar 24, hose clamping means disposed within said collar and means for anchoring a retriever cable 16 to said collar, said hose clamping means including an arcuate inner member 18 adapted to engage the hose and a clamp 20 disposed about said inner member, said inner member having a pair of free ends 50, 52 normally spaced from each other, said spacing being determined by the diameter of the hose to which the inner member is secured said inner member defining a track mounting the collar for rotation about the hose axis. In the construction shown the collar 24 is made from a pair of identical housing members 22 and 23 (not shown) each housing member having projections 34 near one end which engage recesses 36 in the other member, and near the other end each member, having a pin 38 and a hole 40 each pin mating with the hole 40 of the other member, the two members being held together by a snap ring disposed in an external groove 56. The means for attaching the retriever cable 16 to the collar comprises a cavity 28 which has a passageway 41 leading thereto the cable 16 being anchored in the cavity 28 by inserting the free end portion 32 of the cable through a washer 30 and then knotting it. The inner member 18 of the hose clamping means has its inner surface serrated to provide for positive gripping of the hose and it is provided with pairs of outwardly extending bearing tabs 46 which define the track, the clamp 20 being a band clamp disposed around the inner member between the bearing tabs. A spacer sleeve 26 is positioned over the outermost edges of the bearing tabs 46, the sleeve having a slit 48 that can be opened to permit easy insertion over the hose; the member 18, the band clamp 20 and the sleeve 26 are all contained in a groove in the collar 46 and the sleeve 26 can be omitted if the hose 12 is of such diameter that the tabs 46 ride in the groove of collar 24 with a minimum clearance. An alternative form of spacer sleeve 25 is also described in which the sleeve before assembly is flat and has a T shaped cross section, the sleeve is used either with the leg of the T between the tabs 46 for a large diameter hose or for smaller diameter hose with the legs of the T facing outwardly.
Patent GB-1464540-A (GB)
IPC: A63B22/08
Filed: 1974-06-26
Abstract: 1464540 Exercise device R D DAVIES 26 June 1974 [27 June 1973] 30574/73 Heading A6M An exercise device comprising a frame 1, a drum 5 mounted in the frame and rotated by means of pedal-operated crankshaft 4, a band 11 extending around part of the circumference of the drum and connected to the frame at one end by claw 12 and at the other by tension indicating means (13), comprising spring balance mechanism 16, such that the band frictionally engages the drum end the tension indicating means (13) indicates the load that has to be applied by an athlete or patient to rotate the drum. The tension of the band is achieved initially by positioning claw 12 into one of a plurality of apertures and then adjusted by turning cylinder 21 having knurled head 17 connected via threaded rod 18 to spring balance 16. The load applied is indicated by a pointer.on spring balance 16. For interval training wherein periods of "effort" are followed by periods of "rest", additional tension changing means 25 is employed which comprises spaced arms 28, having lugs 30 and 31 which engage knurled head 17, and 34 pivotally mounted on bracket 29 and connected by cable 33 to handlebar mounted lever 38. When lever 38 is operated, owing to adjustable stop 36, arm 28 is pivoted in an anticlockwise direction to provide additional tension in band 11 via balance 16 and when lever 38 is released the additional tension is released. Revolution counter 14 is mounted on handlebars 3 and connected via flexible drive shaft 15 to shaft 6.
Patent GB-1392881-A (GB)
Title: Apparatus for winding conical packages on bobbins
IPC: B65H54/50
Filed: 1972-06-30
Abstract: 1392881 Yarn traverser ELITEX ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 30 June 1972 [22 July 1971] 30631/72 Heading D1T A cylindrical surface for rotating a conical yarn package and an endless yarn-traversing groove in the surface are so shaped that the groove and contact area between the surface and the package reciprocate in unison along the package, the groove having a varying depth and a curved bottom surface forming a yarn tension compensator. Package 9, Figure 1, is rotated by surface 7 defined between parallel planes and having traversing groove 8 whose bottom surface is formed by compensator 11, Fig. 2, shaped to provide maximum yarn deflection when the groove provides a minimum yarn deflection. Alternatively, Fig. 3, surface 7 is formed as a swash plate.
Patent GB-1536116-A (GB)
Title: Aluminium marine anode with core activator
IPC: B63B59/00
Filed: 1977-07-21
Abstract: 1536116 Sacrificial anodes SABINS INDUSTRIES Inc 21 July 1977 [22 July 1976] 30653/77 Heading C7B A sacrificial anode for marine environments comprises a mass e.g. tube of Al alloy having a surface potential with respect to a Ag-AgCl half cell more negative than -1000 mV, and a core of material (e.g. of Cu) having a PD between its surface and that of the Al alloy of at least 200 mV greater than the corresponding PD between Fe and the alloy, embedded therein and extending therefrom to constitute means e.g. lugs for mounting to a ship's hull, the ratio of exposed surface of the alloy to that of the core being no greater than 15:1.
Patent GB-155702-A (GB)
Title: Improvements in or relating to apparatus for the manufacture of petrol gas
IPC: C10J1/00
Filed: 1919-12-08
Abstract: 155,702. Rook, E., and Rook, H. E. Dec. 8, 1919. Carburetting.-A carburettor of the kind operated by suction from the engine cylinders is provided with one or more perforated partition plates. In one form, air is admitted through a perforated circular pipe G and bubbled up through petrol or the like and perforated plates H to the top of a tank A provided with an outlet tap E.
Patent GB-220216-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs of the anthraquinoneseries
Filed: 1923-12-06
Abstract: Anthraquinonethiazoles are obtained by condensing 1-mercapto-2-aminoanthraquinone, or a derivative thereof, or the corresponding disulphide, with glyoxal; instead of glyoxal its bisulphite compound or sulphate may be used.  According to an example, 1-mercato-2-aminoanthraquinone and glyoxal sulphate are heated in concentrated sulphuric acid solution; the product may be purified by boiling with hypochlorite solution or by re-vatting, or by fractional precipitation by diluting the reaction mixture with water or dilute sulphuric acid; it dyes cotton greenish-yellow shades.  Specification 21027/13 is referred to.
Patent GB-910326-A (GB)
Title: Improvements in or relating to welding electrodes
IPC: B23K35/30
Filed: 1960-09-06
Abstract: A ferrous welding electrode consists of iron or steel with 5%-12% silicon as the sole alloying constituent.  The silicon is introduced into the iron by a silicon diffusing process in which the iron or steel wire is embedded in a pack of Al2O3 ferrosilicon and ammonium chloride and heated at 1000 DEG  C.-1100 DEG  C. for six hours.  The siliconized wire is then coated with a flux containing 70% graphite, 2% carborundum, 1% barium carbonate, 9% asbestos and 18% sodium silicate.  A second flux example contains 21% graphite, 49% carborundum, 1% barium carbonate, 9% asbestos, 20% sodium silicate.
Patent GB-339052-A (GB)
Title: Improvements in furnaces
IPC: F23C99/00
Filed: 1929-10-10
Abstract: 339,052. Babcock & Wilcox, Ltd., (Fuller Lehigh Co.). Oct. 10, 1929. Pulverulent-fuel furnaces; grates.-In a powdered-fuel furnace in which air is blown in at the bottom through a chain grate 23 with sufficient force to keep the fuel largely in suspension, the lower end of the furnace is V-shaped in section with the sides 12, 13 of the V rising from the front and rear ends of the grate. The air chamber 30 below the grate is supplied under control of a damper 32 and is sealed at the other end by a damper 33. Ash &c. collecting on the grate is carried thereby into a hopper ash-pit 38 with screw conveyer discharge. The height of the grate may be adjusted by hydraulic lifts 44.
Patent GB-796068-A (GB)
Title: Improvements in or relating to wheels and wheel rims
IPC: B60B11/06
Filed: 1955-10-27
Abstract: 796,068. Wheel rims. KELSEY-HAYES CO. Oct. 27, 1955 [Dec. 29, 1954], No. 30823/55. Class 144 (2). A wheel rim comprises an endless annular member having an annular tyre bead seat 2 integral with an annular tyre retaining flange 4, and a mounting bead 5 which is formed by a portion 6 extending radially inwardly from the flange 4 and a frusto-conical return-bent portion 7 which has an end extension which abuts the bead seat 2 and is bent at a greater angle to the rim axis than the portion 7, the two portions 6, 7 presenting generally oppositely facing mounting surfaces for engagement with clamping and seating means to mount the rim on a wheel body. As shown, the rim is a unitary well-based member with the mounting bead 5 extending integrally from one of the retaining flanges 4. The return-bent portion 7 of the bead comprises a frusto-conical portion 9 for wedging engagement with a correspondingly surfaced clamp 28, the return-bent portion being extended to abut the bead seat 2 by a terminal portion which slopes at a greater angle to the rim axis than the portion 9. The radially extending portion 6 of the bead presents a radial surface 8 to engage a seating ring 25. In the arrangement shown, two such rims are mounted on a hollow-spoked wheel body 10 in a manner identical with that described in Specification 786,544 except that the seating rings 22, 25 for the inboard and outboard rims respectively are of angle section instead of inverted T-section.
Patent GB-324663-A (GB)
Title: Process of preparing stabilised dispersions
IPC: C08L95/00
Filed: 1928-10-24
Abstract: 324,663. Elkington, H. D., (Naamlooze Vennootschap de Bataafsche Petroleum Maatschappij). Oct. 24, 1928. Emulsions, making.-Aqueous dispersions of mineral or vegetable oils, tar, asphalt, paraffin wax, rubber and the like or natural dispersions such as rubber latex, are treated with a protective colloid and subsequently with an agent causing a reversal of the charge on the dispersed particles, e.g. acids, solutions of multivalent metal salts, basic dyestuffs such as methylene blue, hydrosols with positively charged particles such as freshly precipitated aluminium hydroxide. Examples describe the treatment of asphalt dispersions, which contain negatively charged particles, with 20 per cent gelatine solution followed by the addition of N/10 hydrochloric acid and freshly precipitated aluminium hydroxide respectively. The products are stable particularly in the presence of solutions of calcium chloride, ferric chloride and the like. The positive charge on the particles of freshly precipitated aluminium hydroxide are stated to be reversible to negative by the addition of an asphalt dispersion after treatment with a protective colloid. The use of sulphonic acids or sulphonates as protective colloids is excluded. Specifications 3515/11 and 291,393 are referred to.
Patent GB-536773-A (GB)
Title: Improvements in and relating to electric lighting fittings
IPC: F21S13/00
Filed: 1939-11-28
Abstract: 536,773. Electric lighting fittings. HIRSCH, E. Nov. 28, 1939, No. 31005. [Class 75 (ii)] An electric lighting fitting comprises a reflector 11, the surface of which slopes upwardly and inwardly from the periphery of an angle of not less than 30 degrees and a decorative shell 14 surrounding the reflector 11 laterally. The reflector may be provided with a cylindrical portion 9 surrounding the conventional lamp holder 2, and a concave spherical portion 10 may be interposed between the portions 9, 11. The reflector 11 and the shell 14 may be opal glass, and the light source may be disposed so that it is not above the upper extremity of the conical surface 11.
Patent GB-245430-A (GB)
Title: Process for the production of phosphoric acid anhydride
IPC: C01B25/12
Filed: 1925-12-08
Abstract: 245,430. Chemische Fabrik Griesheim Elektron. Dec. 30, 1924, [Convention date]. Phosphoric anhydride. - The air used in the production of phosphorus pentoxide by burning phosphorus or gases containing phosphorus is dried before use by means of the phosphorus pentoxide or the strong phosphoric acid produced in the process, and the heat of the combustion is utilized for raising steam or for other purposes.
Patent GB-796740-A (GB)
Title: Improvements in or relating to x-ray apparatus supply or control circuits
IPC: H05G1/48
Filed: 1955-10-31
Abstract: 796,740. Control systems for space discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 31, 1955 [Nov. 3, 1954], No. 31074/55. Class 38 (4). The regulator 13 of a regulating transformer 1 controlling the X-ray tube anode to cathode voltage in an X-ray apparatus supply circuit is mechanically coupled to the regulator of a variable resistor 18 connected in the tube anode to cathode supply circuit which resistor when the transformer regulator 13 is at its two extreme positions has such values that the two respective total voltage drops resulting from the X-ray tube load are substantially equal. The resistor 18 thereby compensates for variations in the volt drops in the circuit when the transformer regulator 13 is varied, and it may be connected alternatively in the primary circuit of transformer 1, and its intermediate regulating values may be either proportional to or vary as a quadratic function of the intermediate transformation ratios of transformer 1. The tube current is maintained constant upon variation of tube voltage by a variable resistor 8 connected in the tube cathode heating circuit and having its regulator coupled to voltage regulator 13. The tube current is varied by a variable resistor 10 connected in the heating circuit, and its regulator may be coupled to that 17 of a separate winding 16 of transformer 1 which winding injects into the tube anode to cathode supply circuit an auxiliary voltage which varies with the tube current so as to differ from the total voltage drop by a constant amount. At the beginning and end of load duration the current to the H.T. transformer 12 is made and broken by an electromagnetically operated switch 19 whose current is controlled by a timedetermining element 11 which may be coupled to the regulator of tube current control resistor 10 so that the tube current decreases with increasing load duration, and conversely, to prevent overloading of the tube. In the tube heating current circuit is a voltage stabilizing device 9, and between the A.C. supply line 2 and the auto-wound transformer 1 is a variable resistor 3 which is set to bring the transformer primary circuit impedance equal to that used in calibrating the apparatus or in producing a voltage graph. By means of a tapping regulator 4 a voltmeter 5 may be adjusted to a prescribed indication irrespective of variations of the supply line voltage.
Patent GB-465208-A (GB)
Title: An improvement in or relating to swings
IPC: A63G9/14
Filed: 1935-11-11
Abstract: 465,208. Swings. HIRST & SONS, Ltd., B., and HIRST, C. Nov. 11, 1935, No. 31110. Addition to 402,569. [Class 132 (i)] The transverse members provided at the ends of the plank described in the parent Specification, are suspended by rods c whichhave telescopic connection with the overhead supporting shaft a or with the plank Preferably a collar e on the rod c slides in the boss b rotatable on shaft a anc coacts with cushioning springs f, g. Alternatively the ends of a transverse pin in the top of rod c may slide in longitudinal slots in the boss b. The telescopic connections of the rods enable the plank ends to rise when operated by a central vertical lever as described in the parent Specification the hand grip of which is connected to the operating members.
Patent GB-877286-A (GB)
Title: Improvements in or relating to processes for the production of electrical contacts, and to contacts produced thereby
IPC: H01H1/025
Filed: 1959-09-14
Abstract: A Cu/Pb sintered compact with a porosity of 5%-30% is brazed to a backing member with a silver brazing solder and the composite body is then compacted to final size and density.  A Cu/Pb powder mixture containing 2% to 20% Pb is pressed at 1 ton/cm2 and sintered in hydrogen at 900 DEG C.  The compact is brazed to the backing member of copper or bronze using a silver brazing solder which may contain phosphorus and melts between 620 DEG C. and 860 DEG C.  Final compaction is effected at 2 tons/cm2 or 8 tons/cm2 and the final density of the Cu/Pb compact is more than 99%.