baber/WOPTO huggingface dataset:
Patent GB-1260444-A (GB)
Title: Rectifier frequency converter
IPC: H02M5/27
Filed: 1970-02-10
Abstract: 1,260,444. Frequency converters. CANADIAN GENERAL ELECTRIC CO. Ltd. 10 Feb., 1970 [10 Feb., 1969], No. 6434/70. Heading H2F. A frequency converter comprises a plurality of polyphased A.C. sources 12, 13, 14, at least two of which are relatively displaced in phase, each source 12 ... 14 feeding a three-phase bridge A ... C, the output of the bridges being connected in delta so as to provide a polyphased output the frequency of which is dependent on the firing angle of the controlled rectifiers in the polyphased bridges. As described, the sources 12 . . .14 may be threephase secondary windings of a transformer 10 having a delta-connected primary 11. Secondaries 13, 14 are each displaced by 20 degrees from the previous winding. The thyristors 1 .. may be triggered with 90 degrees delay so as to provide an output of six times the input frequency. The output frequency is varied by changing the triggering delay in the range 0-180 degrees so as to control the speed and direction of an induction or synchronous motor M. Inductors 25 ... 26 may be tuned to the sixth harmonic. Fig. 2 (not shown) relates to a frequency converter comprising six threephase bridges of thyristors connected in delta, alternate bridges being supplied with star and delta connected secondaries of a three-phase transformer. A three- or six-phase output is thus available.
Patent GB-1025120-A (GB)
Title: Vice construction
IPC: B25B1/10
Filed: 1965-02-15
Abstract: 1,025,120. Work-holders. A. P. DEFELICE. Feb. 16, 1965, No. 6437/65. Heading B3B. A vice comprises a fixed jaw 22 and a movable jaw 46, each jaw having a work engaging member 32, 50 loosely held against an arcuate surface on the jaw and each jaw being resiliently urged upwardly, so that, when a workpiece is clamped, the members 32, 50 tend to be forced downwardly. The movable jaw 46 is guided on the base 10 by flanges 64 and is moved by screws 6 mounted in a block 68 which can be mounted over any line of tapped holes 16.
Patent GB-288171-A (GB)
Title: Improvements in the manufacture of highly chlorinated perylenes
IPC: C09B3/20
Filed: 1928-03-01
Abstract: 288,171. Bensa, F. April 2, 1927, [Convention date]. Heptato dodeca-chloroperylene are prepared by passing dry chlorine through a solution or suspension of perylene or a lower chlorinated perylene containing a chlorine carrier consisting of a metallic chloride such as aluminium trichloride or antimony pentachloride. The degree of chlorination is dependent upon the temperature and the quantity of chlorine employed. According to the examples, (1) chlorine is passed at ordinary temperature through a suspension of perylene in nitrobenzene to which aluminium chloride has been added and produces a chloroperylene containing 53.54 per cent of chlorine; at a temperature of 130-140 C., monochloroperylene is obtained, and with an increased flow of chlorine, decachloroperylene results; (2) chlorine is passed through a suspension of perylene in nitrobenzene maintained at a temperature of 100-120 C. and containing antimony pentachloride; the product contains 63.28 per cent of chlorine; (3) di- or hexa-chloroperylene is suspended in nitrobenzene with aluminium chloride and chlorine is passed through while maintaining the temperature at 130-140 C. and yields a product containing 59.70 per cent of chlorine.
Patent GB-589235-A (GB)
Title: Improvements in or relating to range finders
IPC: G01C3/16
Filed: 1944-04-06
Abstract: 589,235. Range-finders. INTERNATIONAL POLAROID CORPORATION. April 6, 1944, No. 6518. Convention date, April 22, 1943. [Class 97 (i)] In a stereoscopic rangefinder left-eye and righteye images on a graticule 20 are superimposed on the field of view of the observer and the image intended to be seen by one eye is blocked from the other eye. In the form shown, the graticule, which consists of a light-polarizing stereoscopic print as in Specification 528,796, comprises sheet 25 of transparent plastic material having the molecules on one 'surface parallel to arrow 26 and on the other surface parallel to arrow 28, or a composite sheet formed . of two molecularly oriented bonded layers with the directions of molecular orientation at 90 degrees as in Specification 562,877. Light polarizing areas A-D and A<1>-D<1> are stained or otherwise formed on the molecularly oriented surfaces and an analyser 30 for each eye is provided. When the graticule, which is positioned substantially in the focal plane of a collimating lens 24, is viewed through the eyepieces 16 and analysers only one set of stereoscopic images AA<1> ... DD<1> is seen, each of which appears to lie in a different vertical plane due to the different amounts by which the component members of each pair are laterally offset, whilst image AA<1> appears to lie at infinity with the other images apparently nearer progressively.
Patent GB-800902-A (GB)
Title: Blast furnace distributor seal
IPC: C21B7/18
Filed: 1957-02-27
Abstract: 800,902. Stuffing-box substitutes. INTERLAKE IRON CORPORATION. Feb. 27, 1957 [March 15, 1956], No. 6577/57. Class 122 (5). [Also in Group XII] In a blast furnace charging device of the double-bell type having a fixed large hopper 10 and a rotary small hopper 12, a seal is formed by a sleeve 35 depending from an annular flange 17 on the hopper 12 into an annular trough 33 built on the large hopper frame and comprising sleeves 32 and 34. The seal is completed by forming the sleeves 32 and 35 with oppositely disposed grooves 41 and 42, and filling the spaces so formed with sealing rings 40 of neoprene or like flexible material. Conduits 44, 45 are provided for the supply of lubricant, which collects in the trough 33 and is pressed against the rings 40 by gases entering the large hopper 10. Sleeve 45 has a secondary skirt portion 37 engaging the sleeve 34. Sleeves 32 and 35 and the sealing-rings 40 are made in segments for ease of replacement and maintenance.
Patent GB-119626-A (GB)
Title: Improvements in or relating to Locking Devices for Loose Leaf Books.
IPC: B42F13/00
Filed: 1918-04-18
Abstract: 119,626. Moore's Modern Methods, Ltd., Parlabean, D. P., and Upcott, G. W. April 18, 1918. Locking-followers.-In a loose-leaf binder of the kind having posts with screwed extensions B<1> and a screw-actuated locking-follower, the locking- follower comprises a cover-plate G, detachably connected with the member C and carrying on its underside a slidable slotted plate H actuated by the screw E, which is necked at E<2> to engage detachably the slot H<3> in the plate H. For use therewith, a tool, shown in Fig. 4, may be provided, having a screw-driving end J, a pin J<2> for screwing up the post sections, and a hole in the lug J<3> through which a key-ring may be passed.
Patent GB-956032-A (GB)
Title: Improvements in or relating to rectangular packages
IPC: B65D75/14
Filed: 1961-02-23
Abstract: 956,032. Wrappers. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 23, 1961 [Feb. 26, 1960], No. 6667/61. Heading B8C. A wrapper for gramophone records comprises a blank constituted by a rectangular central portion and four closure flaps cut from a corrugated cardboard sheet so that the edges of the rectangle are at between 30 and 60 degrees to the lines of corrugation, and is characterized in that the flaps overlap. In one embodiment (Fig. 1) the blank is folded along lines 4, 5 and 8, 9 so that flaps 11, 13 just touch one another. Flaps 10, 12 are then folded in about lines 2, 3, 6, 7 so that they overlap and the package is then sealed by an adhesive strip. In the embodiment shown in Fig. 3, the flaps 36-39 are folded in simultaneously, portions 42-45 underlying the adjacent flaps. A tab 51 is provided to facilitate opening.
Patent GB-786421-A (GB)
Title: Alternating current power pack
IPC: G05F3/12
Filed: 1954-03-08
Abstract: 786,421. Rectifying. SCHWARZER, H. H. G. F. March 8, 1954 [March 6, 1953; March 17, 1953; March 17, 1953], No. 6750/54. Class 38 (2). [Also in Group XL (c)] An A.C. power pack comprises a transformer 5 having its primary winding supplied from a voltage divider comprising a resistor 7 and a glow discharge stabilizer 8, and its secondary windings connected through rectifiers to relatively large condensers 1, 2 which charge up to a value determined by the peak voltage across the stabilizer. By having the stabilizer on the primary side the output volts are not limited to the peak values of known stabilizers. To remove residual ripple a voltage may be derived from the unsmoothed supply through a transformer 11, having its primary winding connected in series, Fig. 2, or in parallel, Fig. 9 (not shown), with the supply, and fed with 180 degrees reversal into the circuit beyond the stabilizer on the primary or secondary side of transformer 6. The power pack may supply amplifiers (see Group XL (c)) used in circuits connected to physiological objects. The primary winding of transformer 6 may be surrounded by an earthed screen 16, its core 17 may be earthed and the secondary windings such as 20 may be surrounded by a screen 18 connected to those secondary winding ends which carry no A.C. with respect to the amplifiers. The screen may be slotted at 26 so that it does not form a short circuited turn, its ends being connected to a variable voltage divider 29 or 31 to neutralize the small voltage induced in the screen.
Patent GB-323158-A (GB)
Title: Improvements in or relating to electric lampholders for vehicles
IPC: F21V19/00
Filed: 1929-03-01
Abstract: 323,158. Dixon, L. T., and Silvester, W. J. March 1, 1929. Holders.-A holder suitable for vehicles, consists of an ebonite or other insulating hollow cylinder A having grooves B, C at right angles, horizontal flanges F of a bayonet holder D being secured in the grooves B, while the grooves C carry terminal bars G, which have at one end spring biassed plungers I provided with roughened or milled contact surfaces J, and terminals H at the other end. The parts may be moulded into the cylinder A.
Patent GB-1473761-A (GB)
Title: Device for measuring the oxygen in a metal bath
IPC: G01N27/411
Filed: 1975-02-18
Abstract: 1473761 Measuring oxygen in molten metal ELECTRO-NITE NV 18 Feb 1975 [19 Feb 1974] 6816/75 Heading GIN A probe for measuring the oxygen activity and temperature of a bath of molten metal comprises a thermocouple 7, a first electrode 6 and a tube 8 with closed end, at least the end 9 comprising a solid electrolyte, the tube containing a second electrode 10, a powder of metal/metal oxide mixture contacting the second electrode and solid electrolyte, a refractory powder layer 12 and a duct 18 leading from inside the tube to atmosphere for removing gases generated during use. The refractory powder is preferably insulating and may be alumina. The duct is preferably of metal and has one end located in the refractory powder. The tube, thermocouple and first electrode are preferably disposed so that they enter the molten metal substantially simultaneously. The probe is mounted on refractory tube 1 and cardboard tube 2 which can be slidably mounted on a probe support rod 21.
Patent GB-589200-A (GB)
Title: Improvements in or relating to overall chains for road vehicle wheels
IPC: B62D55/04
Filed: 1945-03-19
Abstract: 589,200. Endless tracks for vehicles. DENNISON, E. A. March 19, 1945, No. 6851. [Class 79 (i)] An overall chain for road vehicle wheels of the type comprising rigid shoes extending transversely across the treads of the tyres, side flaps hinged to the shoes and retaining chains or the like between the flaps of adjacent shoes, has the connecting chains attached to some flaps near to the free end of the flaps and to others near to the hinges. Fig. 1 shows two wheels a and b with tyres c around which is fitted an overall chain comprising a series of rigid shoes d, Fig. 2 with side flaps e hinged at f. Retaining chains g or the like connect the flaps of adjacent shoes by bolts h. The points of attachment of the chains are alternately near to the hinge f and to the free end of the flap and are so arranged that-the chains g extending round half of each wheel lie in pairs and straight lines along the sides of regular polygons. Specification 465,639 is referred to.
Patent GB-689528-A (GB)
Title: Improvements relating to fluid pressure operated valves
Inventor: SIMMONS ARTHUR WILLIAM
IPC: B60T15/48
Filed: 1951-03-22
Abstract: 689,528. Fluid pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and SIMMONS, A. W. Jan. 1, 1952 [March 22, 1951], No. 6867/51. Class 103 (i). A quick inshot valve for use in fluid pressure railway braking apparatus is provided with a change-over valve cock 7 which when turned to the position marked P for passenger operation allows flow through the passages 17 and 8 to a passage 16 communicating with an annular chamber above the outer surface 14 of the inshot valve piston. By this means the piston is operated at a relatively lower pressure to that for the " freight " position F at which pressure is initially only on the centre part of the valve piston.
Patent GB-1493708-A (GB)
Title: Wrapping of units
IPC: B65B19/22
Filed: 1975-02-18
Abstract: 1493708 Wrapping machines FOCKE & PFUHL 18 Feb 1975 [19 Feb 1974] 6875/75 Heading B8C In a method of wrapping an article 10, e.g. a group of cigarettes, in two blanks 11, 12 which overlap at 13, Fig. 2, blank 11 forming a main wrapper and blank 12, which is shorter than blank 11, forming an easily removable flap, the blanks are cut from a single web 16 but are applied to the article at separate, spaced apart stations along its path of travel 27. A metal foil web 16 fed by rollers 17, 18 is cut by parting knives 23, 20 of rollers 22, 19 respectively into alternate long and short blanks 11, 12. Suction channels 30, 31 of roller 19 co-operate with a suction manifold 32 to divert the short blanks 12 to a suction roller 36 over which an endless belt 35 passes. The roller 36 has an annular channel 38 to receive the belt 35 so that it lies flush with the end portions of the roller, these end portions having the suction openings 39. The roller 36 places each blank 12 on to an article 10, the belt 35 holding the blank against the article as it moves along the path 27. Each long blank 11 passes between fixed guides 25, 26 to intercept an article 10 and form a U-fold around it, with one end overlapping an end of the blank 12 already on the article. As the article continues along the path 27, the edge positions 14, 15 of blanks 11, 12 and their laterally projecting positions are folded on to the article in known manner. Instead of the two knife rollers, a single roller with two blades may be used.
Patent GB-575844-A (GB)
Title: Delivering measured quantities of liquids
IPC: B01F15/04
Filed: 1944-04-14
Abstract: 575,844. Delivering measured volumes of liquid. WINGET, Ltd., and STANCLIFFE, C. W. April 14, 1944, No. 6928. [Class 106 (v)] Apparatus for delivering measured volumes of liquid to a machihe comprises a valve interconnected with the driving means and controlling the admission of liquid to a doubleacting cylinder fitted with a piston of variable stroke from which the liquid is delivered to the machine. The valve 4, rotated through intermediate gearing from the machine, connects the ends of the cylinder 1 alternatively with a supply duct 17 and outlets 19, 20, one of the latter being connected to an air chamber to compensate for momentary variations in pressure. The piston 2 is fitted with an abutment 7 which engages an adjustable stop 8 whereby its stroke can be varied.
Patent GB-383839-A (GB)
Title: Improvements in and relating to electric connectors
IPC: H01R13/56
Filed: 1932-03-08
Abstract: 383,839. Plug couplings. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Prince, D. C. ; 1424, Wendell Avenue, Schenectady, New York, U.S.A.) March 8, 1932, No. 6949. Convention date, March 9, 1931. [Class 38 (i).] Electric connectors of the plug- and -socket type in which the flexible leads are directed substantially at right-angles to the direction of engagement are provided with handles extending outwardly in opposite direction from the axis of the connector. In the application to an electric flat-iron, Fig. 2, the handle consists of a tube 30 secured by a pin 36 in a clamping plate 32 extending upwards from the insulated body carrying the sockets or contact members 17, 18 which engage twin contact pins 11 on the iron 10, a protective casing 12 being also carried by the iron. The tube 30 serves as a guide for the lateral entry of the leads 25 into the connector.
Patent GB-1115896-A (GB)
Title: Polyurethanes
IPC: C08G18/38
Filed: 1967-02-14
Abstract: Polyurethanes which are substantially soluble in mehtyl ethyl ketone are prepared by reacting 1.5 to 1.7 mole ratio of a diisocyanate with a mixture which comprises 0.4 to 0.6 molar ratio of a hydrocarbon diol having 2 to 10 carbon atoms and terminal OH groups, 0.03 to 0.05 molar ratio of a diamino diphenylsulphone and 1.0 molar ratio of a hydroxyl group containing polyester derived from 1,4-butane diol and adipic acid and having a M.W. of 700 to 1500 and an acid number of less than 10, the isocyanate groups of the diisocyanate being equal to 92 to 97% of the total reactive H atoms, and heating the polyurethane to effect a cure. Suitable diols are ethylene glycol; 1,4-butane diol; 1,5-pentane diol and 1,6-hexane diol whilst the preferred diamines are 4,41-diamino diphenylsulphone and 3,31-diamino diphenyl-sulphone. The diisocyanates may be 4,41-diphenylmethane diisocyanate or 4,41-dicyclohexylmethane diisocyanate.ALSO:A glass plate is coated with a polyurethane which has been prepared by reacting 4, 4\sv-diphenylmethane diisocyanate with a mixture of a (i) polyester derived from 1, 4-butane diol and adipic acid (ii) 1, 4-butane diol and (iii) 4, 4\sv diamino diphenylsulphone and dissolved in methyl ethyl ketone.
Patent GB-1125515-A (GB)
Title: Timepiece regulator
IPC: G04B18/00
Filed: 1967-02-14
Abstract: 1,125,515. Balances. HAMILTON WATCH CO. Feb.14, 1967 [April 1, 1966], No. 7137/67. Heading G3T. Apparatus for changing the rate of oscillation of a balance wheel 10 without affecting its centre of gravity comprises a pair of weights 52, 54 which may be moved in opposite directions by rotating a rod 58. The weights are screwed on to oppositely threaded portions 60, 62 of the rod 58 and slide in rectangular housings 44, 46 formed integrally with the balance wheel rim 12 or welded or secured in notches in the balance wheel rim. The rod is rotated by a screw driver inserted in a slot in one end of the rod and a pin 66 prevents longitudinal movement of the rod. Several modifications of the construction of the rod 58, the weights 52, 54 and the housings 44, 46 are described.
Patent GB-1022092-A (GB)
Title: Improvements in and relating to frequency discriminators
Inventor: MAYO CHARLES GILBERT
IPC: H03D3/08
Filed: 1961-02-27
Abstract: 1,022,092. Frequency discriminators. BRITISH BROADCASTING CORPORATION. Feb. 27, 1962 [Feb. 27, 1961], No. 7147/61. Heading H3A. In a frequency discriminator three equallytuned circuits comprising tuned inductors 7, 8, 9 are successively coupled together and, to avoid the departure from 90 degree phaseshift across inductor 8 and resulting distortion, due to the resistance of tuned circuit 9, the F.M. input inductor 7 is coupled by a resistance 23 with the third inductor 9. The voltages across 7, 8 (in phase quadrature only at the mean frequency) are then combined to produce vector sum and difference voltages whose difference is taken after separately rectifying them. Alternatively, Fig. 6, the voltage across inductor 8 may be combined with a centretapped voltage derived from inductor 7 through two successively coupled tuned circuits 21, 22, tuned to the F.M. mean frequency. Alternatively, inductor 8 may be connected to the centre tap of inductor 9 and the resistance 23 connected, not to inductor 7, but to inductor 22. One rectifier 16 may be shunted by an oppositely poled rectifier 37 and an R.C. circuit 39, 38 corresponding to that in series with rectifier 16, and the junction 33 of rectifier 37 and its smoothing circuit 39, 38 connected by a large capacitance as the output T 2  of the other rectifier 17, so that the sum of the rectified vector sum and difference voltages is produced across the capacitance. This linearizes the discriminator output, and reduces the magnitude of the voltage required across coil 22, and the effect of impulsive interference. In a Figure 5, the tuned circuit 21 is omitted and coil 7 coupled directly to coil 22, and a ratio detector output circuit used. In a Figure 4 the circuits 8, 9 are each equally mistnued from the resonance frequency of circuit 7 and the circuits 21, 22 mistuned also from this centre frequency by an equal amount but in an opposite direction. Resistors between coil 7 and coils 9, 22 compensate for the loading effect of circuits 9, 22 on the circuits 8, 21. The outputs from tuned circuits 8, 22 are then separately rectified and the difference gives a demodulated F.M. output.
Patent GB-558681-A (GB)
Title: Feed unit for electric wiring system
IPC: H01R25/16
Filed: 1942-05-27
Abstract: 558,681. Two-part couplings. O'BRIEN J. F. May 27, 1942, No. 7182. Convention date, June 26, 1941 [Class 38 (i)] A wiring system built up of a series of units comprising cap and base portions 16, 17 as a moulding &c on a wall, has one unit 10 constructed for introducing the power supply leads from the rear and to give access from the front to the supply connections 38. The cap portion 16 of the unit 10 has a central well 18 below which terminate the conductors 31 secured between the cap and base and connected by collars 34 to bars 33 lying along the walls of the well. Each bar has a plate 36 for mounting it, and the connection posts 38 for the supply leads 19 are mounted one on each plate. The leads 14 run as a concealed cable from a connection box, enter by an aperture 23, and pass through an opening 24 in the base of the well 18, one on each side of an insulating partition 21 that is extended to separate the bars 33 and terminals of opposite polarity throughout the length of the well. The supply leads may be run from a wall plug to the front of the unit and enter through a knock-out in the cover 20 that closes the well. The cable sheath BX at the rear is secured to a U-shaped fitting 26, the feet of which have lateral notches to fit clamping screws 29.
Patent GB-1379984-A (GB)
Title: Decorative loudspeakers
IPC: H04R9/06
Filed: 1972-02-16
Abstract: 1379984 Loud-speakers ELECTRONIC RESEARCH ASSOCIATES Inc 16 Feb 1972 [19 Aug 1971] 7185/72 Heading H4J A loud-speaker 4 is secured to the rear of a frame 2, and a decorative member 6 comprising stiff material and adapted to function as a sound propagating element extends across the opening 20 in the frame 2 in front of the loud-speaker 4. Yieldable material 34 is located between the frame 2 and the decorative member 6. Further yieldable material 36 is located between the decorative member 6 and the loud-speaker base 16. In addition, a yieldable element 38 may be located between the periphery of the decorative member 6 and inwardly facing surfaces 22 of the frame 2. The loud-speaker 4 has a flat diaphragm 10 carrying a voice coil (11), Fig. 3 (not shown) surrounded by a permanent magnet (13). Current is supplied to the voice coil (11) by conductors (15) embedded in or secured to the diaphragm 10. The frame 2 may be rectangular, oval or circular and the diaphragm 10 may be correspondingly shaped. A loud-speaker 4 having a circular shaped diaphragm may be mounted in a base 16 and frame 2 of rectangular or other shape. The decorative member 6 may be formed of or supported by an underlay of wood, metal or sheet material having a canvas painting, photograph or picture mounted on it. Alternatively the decorative member 6 is a mirror or a glass panel overlying and protecting a layer of acoustically transparent material, e.g. fabric or tapestry. The frame 2 is of wood or plastics material. The decorative member 6 may be inserted or removed without damage by disengaging fastening means 18 to permit removal of the base 16 of the loud-speaker.