baber/WOPTO huggingface dataset:
Patent GB-297196-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F27/28
Filed: 1927-08-08
Abstract: 297,196. Norris, E. D. T., and Ferranti, Ltd. Aug. 8, 1927. Transformers.-In a, transformer winding of the kind comprising several parallel-connected strands a, b whose relative positions in the winding are interchanged at intervals, account is taken of the difference in direction of leakage flux near the ends of the winding as compared with the middle part by subdividing the conductors near the ends into parts c, d and e, f that are then crossed over in the direction at right angles to the cross-overs in the middle part of the winding.
Patent GB-714127-A (GB)
Title: Improvements in or relating to electric circuit arrangements for supplying a load with alternating current
Inventor: CROWTHER GERALD OFFLEY
IPC: H01J17/48
Filed: 1952-08-20
Abstract: 714,127. Switching systems for resistance welders. MULLARD RADIO VALVE CO., Ltd. Aug. 20, 1952, No. 20906/52. Class 38(4) A circuit for supplying a load, such as a resistance welding transformer 9, with a half-cycle or part thereof of an alternating current supply at each time of operation of the circuit, comprises a valve 1 in series with the load and normally held non-conducting by A.C. bias 18, the valve being caused to conduct for half a cycle (or less) when desired by a triggering voltage pulse developed across a resistor 25 consequent upon conduction of a thyratron 19 when a switch 24 in the anode circuit of the last is closed. The precise point in the A.C. cycle at which the thyratron (and consequently the valve 1) fires is determined by a phaseshift circuit 32, 34 feeding the primary winding of a transformer 28 which continuously supplies firing pulses to the control grid of the thyratron. A valve 2 may be arranged to trail 1 so that the load receives a second half-cycle of opposite polarity to the first. By replacing the single thyratron by a system of, say, N discharge paths (which may be in a common envelope) and causing in succession each of the discharge paths to change from a state of non-conductivity to one of conduction the valve 1 may be caused to conduct N times for each closure of the switch 24. A hard valve oscillator, normally biased back so as not to oscillate, but triggered off by the peaking transformer 28, may replace the thyratron 19.
Patent GB-281014-A (GB)
Title: Improvements in and relating to hinges, hinged hasps, locks and like fastening devices
IPC: E05B65/50
Filed: 1926-08-25
Abstract: 281,014. Atkins, A. C., and Stanton, E. J. Aug. 25, 1926. Hasp fastenings for articles such as trunks of variable capacity are formed with telescopic attachment members comprising an element 13 with holes or slots 14 adapted to be secured to a part of the box 12, a second element 15 hinged at 16 to the first element, and a third element 18 slidably mounted in the second element and carrying a pawl or tooth 19 adapted to be engaged or disengaged from the rack 14 when the element 15 is lowered or lifted, as shown in Figs. 3 and 5, the element 18 carrying at its end the hinged hasp 20. A stop-piece 11 limits the opening movement. The pawl 19 allows of a one-way telescopic movement by a ratchet action. The telescopic members may be locked in an adjusted position by a screwed pin 26 mounted on the member 18 and adapted to be screwed by the operation of its milled disc 28 so that a coned part 29 is forced into engagement with one of a series of notches in the back of the other telescopic member 15. In other devices referred to for securing this locking action an eccentrically-mounted cam is provided to hold the parts frictionally together, or a spring pin on one telescopic member is provided to engage one of a series of perforations on the other telescopic member.
Patent GB-1132387-A (GB)
Title: Improvements in or relating to drawing instruments intended for use as toys
Inventor: BOWEN TOM
IPC: A63H33/22
Filed: 1966-05-11
Abstract: 1,132,387. Drawing appliances. SMITHS INDUSTRIES Ltd. 11 May, 1967 [11 May, 1966], No. 20989/66. Heading B6P. A drawing appliance intended for use as a toy comprises two magnetic members 1, 14, the magnet 1 carrying a holder 12 for a marking implement 13, e.g. a ball point pen, and the magnet 14 being used to move the magnet 1 over the surface of a paper sheet supported on a horizontally held sheet 6 of non-magnetic material e.g. aluminium, so that the implement 13 makes marks corresponding to the movement of magnet 14. The magnets are U-shaped, and the pole faces of the magnet 1 are covered by a strip 4 of polytetrafluorethylene to facilitate sliding of the magnet 1 over the paper. The holder 12 is attached to an arm 9 slotted so as to engage adjustably a screwed stud and nut 11 projecting from an aluminium clip 7 fitting over the magnet 1. The magnet 14 may be moved by hand or it may replace the stylus in the drawing appliance described in Specification 960,312, in which case the sheet 6 is secured to the fixed part of the appliance.
Patent GB-144337-A (GB)
Title: Improvements in or relating to electromagnetic apparatus for recording signals
IPC: G01R13/06
Filed: 1918-12-16
Abstract: 144,337. Carey, E. S. Dec. 16, 1918. Recording particular opcrations; roller-andsheet apparatus.-A signalling system is provided with a signal recorder and a time recorder, the tape of which is fed by means of a continuouslyrunning motor which is rendehed operative by the action of an electro-magnet energized by the signal impulses. After a constant feed of the tape the motor is rendered inoperative until the next signal is received, but signals received during the feed do not affect the motion of the tape. The recorder consists of a platen B, Figs. 1 and 2, solenoids or electro-magnets C<1>, C<2>, C<3>, three time-disks B', B<2>, B<3>, a solenoid or electro-magnet C, inking-tape E, record tape F, and a feed mechanism for the tape F, consisting of a mutilated ratchet wheel G driven by an oscillating pawl L and driving the tape shaft F<4> through a chain H<2> and friction wheel H. Normally, the pawl L oscillates inoperatively in the mutilated part of the wheel G, but, upon the receipt of a signal impulse, a magnet M is energized to attract its armature M<1> on the wheel G, thereby bringing the pawl L into operative engagement with the wheel G.
Patent GB-806594-A (GB)
Title: Improvements in and relating to transistor circuits
Inventor: WILKINSON CHRISTOPHER FRANCIS
IPC: H03F3/50
Filed: 1954-07-19
Abstract: 806,594. Transistor amplifying circuits. BRITISH THOMSON-HOUSTON CO. Ltd. July 19, 1955 [July 19, 1954], No. 21028/54. Class 40 (6). In an emitter-follower circuit a feedback path is arranged between the emitter and collector in order effectively to increase the internal resistance between base and collector so that it is substantially ineffective and the input resistance is increased. A capacitor C may be arranged between the emitter and collector loads Re, Rc, Fig. 3, when feedback is required only at A.C. If feedback is also required at D.C. the coupling may include a neon tube, a battery or a resistance network. In a modification, Fig. 4, the emitter of the first junction transistor JT is directly connected to the base of the transistor JT2 feedback being taken from the emitter over capacitor C to the collector of JT1.
Patent GB-516250-A (GB)
Title: Improvements in or relating to electric signal amplifying systems
IPC: H04B1/64
Filed: 1938-07-16
Abstract: 516,250. Automatic volume control. CLARK, H. ÀA. M. July 16, 1938,. No. 21133. [Class 40 (iv)] [Also in Group XL] Compression of a range of signal amplitudes in an amplifier is effected by the use of negative feedback from a resistance R in the output which is in series with a further resistance T, the value of which, at substantially all the frequencies in the range, is an inverse function of the current flowing through it. The resistance may comprise a mixture of silicon carbide, free carbon and a binder such as clay, and may be of the material known under the Registered Trade Mark "Thyrite" or of Metrosil. Specifications 255,221, [Class 40 (iv)], and 479,485, [Group XL], are referred to.
Patent GB-752043-A (GB)
Title: Improvements in and relating to electrical insulators
IPC: H01B17/24
Filed: 1954-07-20
Abstract: 752,043. Insulators. YATES & CO., Ltd., A. July 20, 1954 [July 21, 1953], No. 21144/54. Class 36. An insulator 1 having a groove 3 with non- flexible side walls, has a hooked retaining member 4, which may be formed integrally with the insulator, extending partly across the width of the groove and terminating in an inturned portion 5, the end of which is spaced from the bottom of the groove to allow passage of a conductor 9 which is to be supported.
Patent GB-221633-A (GB)
Title: Improvements in apparatus for imparting disinfectant to water in flushing cisterns
IPC: E03D9/03
Filed: 1923-08-21
Abstract: 221,633. Worner, W. H., Strange, E. A., and Wright, A. M. W. Aug. 21, 1923. Disinfectant liquids and solids, delivering.-In disinfecting-apparatus for the cisterns of water closets &c. of the type comprising a receptacle having orifices at the top and bottom and a disinfecting-member near the bottom orifice, the disinfecting-member consists of an impregnated pad j, Fig. 1, lying on a perforated bottom g. The vessal a which contains a solid or thick fluid disinfectant is supported from the wall of the cistern by a slidable hook m so that the water level is just below the top of the flange f. The cotton pad j becomes saturated with water which thins the disinfectant and allows a little to pass at each flush. In a modification, Fig. 3, a pad 11 is secured between the neck 4 and a screw-cap 5. The apparatus, is made ready for use by cutting the cover 10 of the aperture 9 and the other end 3 is pierced by means of a tack 13 on the strip 12. The strip is then bent to form a supporting hook for the receptacle. Reference has been directed by the Comptroller to Specification 208,738, [Class 66, Hollow-ware].
Patent GB-320889-A (GB)
Title: Improvements in or relating to systems of control for alternating current electric motors
IPC: H02K17/24
Filed: 1928-07-21
Abstract: 320,889. Beatty, W. E., (Bell Telephone Laboratories, Inc.). July 21, 1928. Constant-speed control systems. - An A.C. motor the speed of which depends on the frequency of current supplied to its windings is held at constant speed by arranging so that if either the rotor winding or the stator winding receives current of variable frequency, the other winding receives current varying similarly, the sum or difference of frequency remaining unchanged. In the arrangement shown in the drawing a motor 19 has its rotor fed from a variable frequency source 13 which also feeds the rotor of a generator 14 driven at constant speed and having its stator connected to feed the stator of the motor 19, the direction in which the generator is driven being the same as the direction of rotation of the magnetic field in the rotor. Additional motors 20, 21 may be connected to the first so that all run at the same speed. The motors may be used to drive cameras and sound recorders in the production of sound-films.
Patent GB-807840-A (GB)
Title: Improvements in and relating to power driven ground traversing machines
Inventor: ERTSGAARD BYRON LOUIS
IPC: A01D34/42
Filed: 1955-10-21
Abstract: 807,840. Engine mountings. TORO MANUFACTURING CORPORATION. Oct. 21, 1955. No. 21195/58. Divided out of 807,839 Drawings to Specification. Class 79(3) [Also in Group XXV] The subject-matter of this Specification is identical with that described in Specification 807,839 but the claims diffeir.
Patent GB-1392537-A (GB)
Title: Process for converting uranium hexafluoride to uranium dioxide particles of a selected size
IPC: C01B13/20
Filed: 1972-05-08
Abstract: 1392537 UO 2  from UF 6  WESTINGHOUSE ELECTRIC CORP 8 May 1972 [21 June 1971] 21294/72 Heading C1A Uranium dioxide particles of selected size for use in a fluidized bed 10 are produced by (a) reacting volatilized uranium hexafluoride with steam and hydrogen in a reaction zone 42 (e.g. an ejector), to form gaseous reaction products and seed particles of uranium oxides and oxyfluorides, (b) separating the gaseous reaction products from the seed particles, as well as smaller particles from selected larger particles in a separator 44 (e.g. a cyclone), (c) recycling the smaller seed particles through the reaction zone 42 with subsequent mixtures of steam, hydrogen and uranium hexafluoride to grow the smaller into larger seed particles and (d) introducing the separated larger seed particles via line 52 into a fluidized bed whereby they provide nuclei for the formation of solid uranium oxide compounds. Gaseous products from the separator 44 may be fed to the fluidized bed 10. The larger seed particles may be of particle size from 50 to 300 microns whilst the reaction mixture may consist of uranium hexafluoride, steam and hydrogen in the proportions of 1 mole : 2 to 8 moles : 1 to 8 moles and may be at a temperature above 150‹ C.
Patent GB-1108368-A (GB)
Title: Improvements in or relating to an electronic circuit apparatus
IPC: H03K17/73
Filed: 1965-05-20
Abstract: 1,108,368. Thyristor circuits. PROMOTECHNIC A.G. 20 May, 1965 [20 May, 1964; 30 Sept., 1964], No. 21331/65. Heading H3T. [Also in Division G1] An arrangement for detecting a current or voltage, which may be in the form of a very short pulse, is contained in a conductive casing 1, the input 4 being insulated from the casing and connected to a high impedance input circuit incorporating a transistor 3. This input transistor is connected to a transistor amplifier 8, 9, which supplies an output signal to trigger a thyristor 22, which actuates a lamp 20 outside the conductive casing. The input voltage level detected by the arrangement is adjustable by the potentiometer 19. Input voltages to be tested by the arrangement may be applied to the terminal 4 either capacitively or through a high resistance.
Patent GB-896600-A (GB)
Title: Process for deposition of metal coatings on finely divided substances
IPC: C23C16/442
Filed: 1958-07-03
Abstract: Finely-divided substances are coated with metal in a reaction tube by being held, at least temporarily, in suspension in a stream of the vapour of a volatile compound of the coating metal which is thermally decomposed by external heating of the tube. Coating may be effected by (a) passing vapour upwardly through a fluidised bed of the finely-divided substance, (b) conveying the substance through the vapour on a vibrating, e.g. helical, conveyer, or (c) conveying the substance through a vibrating helical tube in a direction opposite to that of a stream of vapour introduced into the tube.  If desired, the metal compound vapour may be admixed with a carrier gas, e.g. an inert gas or a reducing gas such as hydrogen or carbon monoxide.  The finely-divided substance may be alumina, aluminium silicate, active carbon or silica, and among metals which may be deposited are platinum from platinum carbonyl chloride and aluminium from aluminium alkyl. The resulting metal-coated substances may be used as catalysts.
Patent GB-1274829-A (GB)
Title: Organotin compounds
Inventor: PETERSON DONALD JOHN
IPC: C07F7/22
Filed: 1971-04-19
Abstract: 1,274,829. Organotin compounds. PROCTER & GAMBLE CO. 19 April, 1971 [10 Feb., 1970], No. 21453/71. Heading C2J. [Also in Division C4] Compounds of general formula where A is C 1-14  alkyl, aryl, substituted aryl (especially p-methoxyphenyl, p-N,N-dimethylaminophenyl, p-chlorophenyl or o-methoxyphenyl, or R 2 N - where each R is C 1-14  alkyl, and each R<SP>1</SP> is aryl or C 1-14  alkyl are prepared by reacting A-SO 2 -CH 2 M, where M is an alkali metal or -MgX with R<SP>1</SP> 3 SnX, where X is halogen at- 60‹ to 30‹ C. usually in the presence of an inert solvent or diluent such as an aliphatic hydrocarbon or ether, cyclic ether (especially THF) or trialkylamine. The organolithium or organomagnesium halide reactant is prepared by reaction of a methyl sulphone A-SO 2 -CH 3  with an alkali metal hydride, alkyl, or aryl or an alkylmagnesium halide. Numerous reactants and products are specified. The compounds have insecticidal, acaricidal, bacteriostatic, fungicidal and herbicidal properties and may be used in the form of dusts, wettable powders, emulsifiable concentrates, suspensions in a non- solvent such as water, solutions in emulsified hydrocarbons or halogenated hydrocarbons or as aerosols in CClF 3  and, optionally, benzene.
Patent GB-457987-A (GB)
Title: A process for preparing and forming the surface of moulded articles from synthetic resins capable of being hardened
IPC: B29C37/00
Filed: 1935-07-29
Abstract: The process of the parent Specification is modified by replacing the inner surface of the mould partly or totally by inserted metallic bodies which are coated on their moulding surface with the resinic solutions referred to containing, if desired, a lubricating-agent. The resinic solutions contain soluble or insoluble, organic or inorganic colours and, if necessary, fillers.  The moulds or the metallic bodies may be covered with several coatings of different coloured layers completely or partly.
Patent GB-725508-A (GB)
Title: Spectrometric apparatus
IPC: G01J3/16
Filed: 1953-08-05
Abstract: 725,508. Spectrometric apparatus. ZEISSOPTON OPTISCHE WERKE OBERKOCHEN GES. Aug. 5, 1953 [Aug. 18, 1952], No. 21583/53. Addition to 667,890. Class 97 (1). The apparatus claimed in the parent Specification is modified in that the rotatable dispersing element is replaced by a stationary dispersing element and a principal mirror rotatable to scan the spectrum across the exit slit, and the image of the entrance slit is formed on the wavelength scale by light reflected by a reflecting plane firmly united with the dispersing element and by an accessory mirror rotatable with the principal mirror. As shown, light from the entrance slit b is collimated by lens c, passes through a dispersing prism d, is reflected back through the prisms of a principal mirror e and is focused by a lens f on the exit slit g. The mirror e is rotatable to vary the wavelength reaching the slit g and is secured to a concave mirror h receiving light from the front surface d or the prism and reflecting it back to that surface to form an image of the slit b at the wavelength scale i.
Patent GB-633170-A (GB)
Title: Switch device for change-speed control
IPC: B60K20/00
Filed: 1947-08-07
Abstract: 633,170. Actuation of switches. CARTER CARBURETOR CORPORATION. Aug. 7, 1947, No. 21592. Convention date, June 15, 1940. Drawings to Specification. [Class 38 (v)] [Also in Group XXIV] The subject-matter is identical with that of Figs. 1-4 of Specification 614,428, but the claims differ.
Patent GB-188764-A (GB)
Title: Sun blinds and the like
IPC: E04F10/02
Filed: 1921-08-16
Abstract: 188,764. Golding, E. C., and Perks, C. Aug. 16, 1921. Window-blinds.- The rail at the free-end of a sun blind is supported at each end by an arm b, the upper end c of which engages the upper end of a link e pivoted to the arm b at f. The end c of the arm b is raised or lowered by an endless chain j, operated by hand or power, from inside or outside the building, a guide-wheel k ensuring the gradual projection of the arm b during the lowering operation. In a modification the end c of the arm b is attached to a nut working between vertical guides and through which passes a vertical screwed shaft rotatably mounted. A side wing, shown in Fig. 5, comprises a triangular sheet of fabric attached by one edge to a slotted arm m slidably engaged with the free end of arm b and pivoted, together with a number of spaced reinforcing ribs n, to a plate o mounted to rock upon a bracket p, one edge of the fabric being attached to the building. In a modification, Fig. 6. the fabric l is provided with eyelets g through which pass a cord r secured at one end to the arm b, the other end passing over a pulley s and carrying a weight t.
Patent GB-136915-A (GB)
Title: An Improved Adjustable Boot and Shoe Tree.
Inventor: CHILDS WALTER JOSEPH WILLIAM
IPC: A43D3/14
Filed: 1918-12-30
Abstract: 136,915. Childs, W. J. W. Dec. 30, 1918. Trees and stretchers. - An adjustable boot and shoe tree comprises a spring metal forepart 1 adapted entirely to fill the front portion of the boot &c., and a bent wire toggle 7, 10 having its forward ends 8 in engagement with one of a series of holes 6 in flanges 5 stamped out of the forepart. Reference has been directed by the Comptroller to Specification 14925/11.
Patent GB-1020993-A (GB)
Title: Improvements in and relating to injection moulding, pressing or blowing machines
IPC: B29C48/92
Filed: 1963-05-31
Abstract: 1,020,993. Controlling moulding machines. W. BATTENFELD. May 31, 1963 [June 1, 1962], No. 21850/63. Heading B5A. In an automatic injection, compression or blow moulding machine, electrical impulses are produced at predetermined times in each working cycle, the time intervals between successive impulses being checked by time switches set for maximum and minimum times respectively, so that the machine is stopped if it is not functioning correctly. The invention is described as applied to an injection moulding machine having a reversible A.C. motor for operating the injection piston. If the time of a working cycle is too long or too short the machine is stopped and a visual or audible signal is given.
Patent GB-1522262-A (GB)
Title: Method of controlling the reduction of aqueous thiosulphate solutions
IPC: B01D53/50
Filed: 1976-05-26
Abstract: 1522262 Regeneration of spent SO 2 -scrubbing solutions CONTINENTAL OIL CO 26 May 1976 [27 May 1975] 21876/76 Heading C1A Aqueous SO 2 -absorbent solutions containing sodium, potassium or ammonium thiosulphate are regenerated by reducing the thiosulphate with gaseous CO in a reaction zone to produce an SO 2 - absorbent solution containing sodium, potassium or ammonium carbonate and/or bicarbonate, sulphide, hydrosulphide or polysulphide or a mixture of such sulphides, also produced is a gaseous effluent stream containing CO 2  and H 2 S at least a portion of which is recycled to the reaction zone, the amount of this recycled gaseous effluent being adjusted so as to maintain the value of R for the regenerated absorbent within the range 0À75 to 1À5 (the mole ratio of CO 2  to H 2 S in the gas stream is measured periodically to enable the correct amount of recycled gas to be calculated). The value of R for the regenerated solution is given by where (S‹) and (S<SP>2-</SP>) are respectively the numbers of gram atoms of sulphur with a valence number of zero and minus two in 100 grams of the solution; and where #M is the number of gram atoms of M, where M is Na, K or NH 4 , per 100 grams of solution present in the feed solution to the SO 2  scrubbing zone; M present in other compounds being excluded from the calculation.