baber/WOPTO huggingface dataset:
Patent GB-659051-A (GB)
Title: Improvements in valve arrangement for automatically controlling the supply of a liquid refrigerant to the evaporator of a refrigerating system of the expansion type
IPC: F25B41/06
Filed: 1945-10-15
Abstract: 659,051. Refrigerating. GRAM, A. G., and GRAM AKTIESELSKABET, B. Oct 15, 1945, No. 26938. [Class 29] In a compression refrigerating system, liquid refrigerant is fed to a flooded evaporator through a valve 2, 3 controlled by a spring 20 and a bowl-shaped control member 4 having an orifice 9 in the bottom and located in a chamber 10 communicating with the valve 2, 3 with a pipe 11 leading to the evaporator, with a pipe 18 leading to the compressor suction and with a pipe 15 leading from the evaporator. When the compressor is running refrigerant is sucked up the pipe 15, falls through a funnel 16, through orifice 17, and runs down a shoot in the arm 5 into the control member 4 which is thus loaded and acts as a conventional float valve, refrigerant draining through the orifice 9. When the compressor stops, refrigerant no longer issues from the pipe 15 and the control member 4 empties so allowing the spring 20 to close the valve 2, 3. When the compressor starts, refrigerant issues from the pipe 15 to fill the control member which opens the valve 2, 3. The orifice 17 is of adjustable size and the tension of the spring 20 may be varied. The funnel 16 has an overflow spout.
Patent GB-488363-A (GB)
Title: An improved method for moulding jaw parts and mouth parts for the purpose of lining and correcting the same
IPC: A61C13/00
Filed: 1936-10-05
Abstract: Dentures of caoutchouc are remodelled by taking an impression in the mouth with the denture charged with a vulcanizable plastic and adhesive rubber composition and then vulcanizing.  The vulcanizable composition may have as its basis guttapercha, latex, or caoutchouc which has been subjected to lengthy mastication at about 20 DEG  C.; in an example the composition comprises masticated caoutchouc 48 parts, sulphur 24 parts, and mercury sulphide 36 parts, together with 5 per cent factice and 2 per cent guttapercha.  Other colouring materials specified are carbon black and iron salts.ALSO:Dentures of caoutchouc are remodelled by taking an impression in the mouth with the denture charged with a vulcanizable plastic and adhesive rubber composition and then vulcanizing.  The vulcanizable composition may have as its basis guttapercha, latex, or caoutchouc which has been subjected to lengthy mastication at about 20 DEG  C.  In an example, the composition comprises masticated caoutchouc 48 parts, sulphur 24 parts, and mercury sulphide 36 parts, together with 5 per cent factice and 2 per cent guttapercha.  Other colouring materials specified are carbon black and iron salts.
Patent GB-667229-A (GB)
Title: Improvements connected with the mounting of leads associated with electric cooker elements
IPC: H01B17/26
Filed: 1949-10-21
Abstract: 667,229. Insulating bushings. REVO ELECTRIC CO., Ltd., and FELTON, A. E. Oct. 23, 1950 [Oct. 21, 1949], No. 27043/49. Class 36. A lead-in arrangement for electric conductors comprises an insulating bushing consisting of two insulating blocks 8, 9, interengageable through an aperture 7a in a wall 7 in a non- rotatable manner relative to the wall and to each other, and a bus-bar 5 which passes through the blocks 8, 9 in a non-rotatable manner and to the ends of which the supply leads 4 are connected. Each of the blocks may be of the same configuration (Fig. 1), comprising an open-ended rectangular block from which extends a neck 8a, 9a and in which is formed a rectangular bore 8b, 9b for the reception of bus-bar 5. The neck 8a passes through the rectangular aperture 7a and fits freely within the open end of block 9. Terminals 6 connecting leads 4 to the bus-bar 5 limit the longitudinal movement of the blocks 8, 9. The blocks may be of different shapes (Fig. 3), while longitudinal movement may be restricted by providing a crank 5a in the bus-bar.
Patent GB-733978-A (GB)
Title: Improvements in cases for gas-discharge lamps
IPC: H01J61/30
Filed: 1953-10-05
Abstract: 733,978. Discharge lamps. HERAEUS QUARZSCHMELZE GES. Oct. 5, 1953 [March 25, 1953], No. 27248/53. Class 39 (1). [Also in Group XXIII] A case for a gas-discharge lamp is made of quartz glass of a degree of purity greater than that required for transmitting the required amount of radiation. The greater purity gives a longer working life.
Patent GB-934932-A (GB)
Title: Improvements in or relating to rollers such as are used for compacting and levelling materials during road making or repairing operations
Inventor: HARRISON KENNETH JAMES
IPC: E01C19/28
Filed: 1961-07-19
Abstract: 934,932. Road rollers. LINER CONCRETE MACHINERY CO. Ltd. July 17, 1962 [July 19, 1961], No. 27329/62. Divided out of 934,931. Class 6(1). A road roller is provided with a hydraulic motor 23 for driving the roll 17, the motor being located within the roll and the shaft of the motor being held stationary in the roller frame while the casing rotates and is freed to a side or end plate of the roll. The motor is provided with fluid from a pump 18 via a control valve 27. Gearing may be incorporated in the drive between the hydraulic motor 23 and the roll. The frame 10 is provided with side arms 11 which may be cranked or a single arm only may be provided.
Patent GB-662526-A (GB)
Title: Improvements in or relating to the preparation of n-substituted amino carboxylic acids
IPC: C07K1/107
Filed: 1949-10-25
Abstract: A liquid saturated aliphatic b -lactone of the formula <FORM:0662526/IV (b)/1> wherein each R is hydrogen or an alkyl group of 1-3 carbon atoms, and an amine of the formula <FORM:0662526/IV (b)/2> wherein R1 is cycloalkyl and R2 is hydrogen, cycloalkyl or alkyl, are brought together in a completely organic liquid medium, and an N-substituted amino acid having the formula <FORM:0662526/IV (b)/3> recovered from the reacted liquid mass.  b -Propiolactone is preferred but other b -lactones are specified.  Amines include cyclo-propyl (butyl, pentyl, hexyl, heptyl or octyl) amine, 3-isopropyl - 1,2,2 - trimethyl - cyclopentylamine, 2,2,3,3 - tetramethyl - cyclopentylamine, dicyclopentyl (or hexyl) amine, N-methyl (ethyl, propyl, heptyl or isopropyl) cyclohexylamine. The reactants are mixed alone or in the presence of inert organic solvents or diluents, particularly nitriles such as aceto-, propio-, and benzonitriles.  Other solvents are saturated aliphatic or aromatic hydrocarbons or their chlorinated derivatives, liquid ethers, esters, ketones, and alcohols. Temperature is preferably - 30 DEG  to 150 DEG  C.  In examples, b -propiolactone is reacted with mono-, di- or N-ethyl-cyclohexylamine, alone or with acetonitrile or ether as solvent.
Patent GB-759709-A (GB)
Title: Improvements in or relating to the condensation of zine in metallic vapours from gases containing the same
Inventor: MORGAN STEPHEN WILLIAM KENNETH
IPC: C22B19/18
Filed: 1953-10-06
Abstract: 759,709. Condensing zinc. NATIONAL SMELTING CO., Ltd. Sept. 27, 1954 [Oct. 6, 1953], No. 27434/53. Class 82(1). Gases containing zinc vapour, produced for example in blast furnaces or electrothermic furnaces, are freed from dust and/or fume by passing through a separator in which the gases are deflected downwardly and laterally to deposit the dust and/or fume before passing to a shock chilling condenser to condense the zinc as liquid metal. A small amount of oxygen may be introduced into the gases to reheat them before they pass to the condenser. Fig. 3 shows a section of a blast furnace 1 from which gases are removed by offtake 2. The gases are deflected laterally on passing through chamber 3 and downwardly under a partition 6 and continue through duct 5 to condenser inlet 8. The dust is deposited in chamber 3 and collects in a dust hopper at the base of the chamber. In a further embodiment, Figs. 4-6 (not shown) the gases pass through a cyclone before entering the zinc condenser. Specifications 572,961, 682,179 and 759,710 are referred to.
Patent GB-692557-A (GB)
Title: Variable-speed gear
IPC: F16H29/04
Filed: 1949-10-26
Abstract: 692,557. Variable-speed gearing. SHACKLETON, R. Nov. 7, 1950 [Oct. 26, 1949] . No. 27446/49. Class 80 (ii). Variable-speed ratchet gearing between coaxial driving and driven shafts 1, 2 comprises a member C movable axially on the driving shaft 1 and formed with tapering longitudinal ribs coacting with rollers R on spring-loaded arms L connected to lay shafts through one-way roller clutches, the shafts being geared to the driven shaft 2.
Patent GB-1443260-A (GB)
Title: Looms national hunt horseracing parlour game
IPC: D03D49/60
Filed: 1974-06-20
Abstract: 1443260 Jet looms RUTI MACHINERY WORKS Ltd 20 June 1974 [20 June 1973] 27500/74 Heading D1E A jet loom has auxiliary nozzles 28 which direct the weft into recesses 26 of a guide comb 25 which is pivotally mounted on the sley 11 so that, on weft insertion (Fig. 1) the teeth 25 protrude from between the reed dents 13 and, on beat-up (Fig. 2) do not protrude. The teeth 25 may have faces 30 aligned with the reed dents at the beat-up position to assist in beatup and reed teeth 25 need not be provided between each dent. For Figures see next page
Patent GB-1170213-A (GB)
Title: Automatic Paralleling System.
IPC: H02J3/42
Filed: 1968-06-11
Abstract: 1,170,213. Synchronizing systems. WESTINGHOUSE ELECTRIC CORP. 11 June, 1968 [20 June, 1967], No. 27636/68. Heading H2H. An automatic paralleling system for connecting an A.C. generator to a second A.C. generator, or to an energized power line, comprises means for sensing the voltages of both generators or the power line and producing trains of pulses from the sensed voltages which have a repetition rate proportional to the slip frequency and a frequency sensing means, the arrangement being such that when the voltage and frequency sensing signals are within given limits the generators or the power line are automatically connected in parallel. Two A.C. generators 1, 2 are automatically connected in parallel by means of a circuit-breaker 6 whenever the phase difference between the voltages of the generators and the slip frequency between them are within prescribed limits. The voltages of the generators are half wave rectified by diodes 11, the rectified voltages being superimposed and applied to the base of a transistor 27 in a phase difference sensing circuit 13. A capacitor 30 charges during the zero voltage periods between the superimposed half-waves and discharges when a voltage appears on the base of transistor 27. Thus, when the duration of zero voltage is such that the phase difference between the generator voltages is less than that required for paralleling the capacitor 30 applies a voltage to the base of transistor 16 which is greater than a reference voltage applied to the base of transistor 17. Transistor 16 then becomes conductive which in turn renders transistor 22 conductive, thus producing an output at the collector thereof in the form of a pulse train. These pulses are applied over a connection 24 to a slip frequency sensing circuit 14, the circuit 14 being similar to the circuit 13. The pulses are used to charge a capacitor 36 and the charge on this capacitor gives an indication of the slip frequency. When the charge on the capacitor is such that paralleling can be permitted a transistor 16<SP>1</SP> becomes conductive and a voltage pulse on line 24 occurs at the same time to energize the voltage comparison circuit 34 through a diode 35, transistor 22<SP>1</SP> becomes conductive to produce an output at its collector. This renders a transistor 27<SP>1</SP> conductive and thereafter transistor 41 is rendered non-conductive. A signal now appears at the collector of transistor 41 which when applied to a control device 44 energizes and closes the circuit-breaker 6 to parallel the generators 1, 2. The absence of bulky components, such as transformers, from the control system permits miniaturization thereof.
Patent GB-958860-A (GB)
Title: Improvements in or relating to gardening implements
IPC: A01B1/16
Filed: 1962-07-18
Abstract: 958,860. Scythes. J. C. POOLE. July 18, 1962, No. 27654/62. Heading A1F. A weed-cutting tool, swingable by one hand, comprises a rectangular blade 3 sharpened on two opposite edges 4, 5, and a straight handle 1, terminating in a hand grip 2, extending perpendicularly from the centre of the blade.
Patent GB-371394-A (GB)
Title: Process and apparatus for purifying mineral oils
IPC: C10G25/00
Filed: 1931-01-13
Abstract: <PICT:0371394/III/1> Mineral oils are purified by passing the vapour and steam through cyanized coke obtained as described in Specification 371,384 by passing air or ammonia through coke soaked with alkali.  For example, oil vaporized by live steam, or oil vapour from a pipe 34 and steam from pipes 35, are passed into a tower 30 packed with cyanized coke and connected by a pipe 33 to a condenser and a suction pump or the like.  Spent coke is withdrawn through a gas and air lock L and a chute 32, is washed with water to remove impurities and recover caustic alkali, and is then treated as described in Specification 371,384 and re-used.  Fresh coke is passed into the tower through a hopper 31 and a gas lock L<1>.
Patent GB-1114445-A (GB)
Title: Mass spectrometer
Inventor: ANDREW DEREK
IPC: H01J49/32
Filed: 1965-06-30
Abstract: 1,114,445. Mass spectrometers. MULLARD Ltd. 3 May, 1966 [30 June, 1965], No. 27736/65. Heading H1D. In a crossed-field mass spectrometer in which the ions follow cycloidal paths the electric field is produced by one or a pair of helices 24, 27 composed of resistance wire and across which voltages are applied and wound about posts at least one of which is spring loaded away from the centre of the helix in order to take up slack in the wire due to heating. The posts are provided with notched ceramic sleeves and spring loading is accomplished by internal leaf springs. The ceramic sleeves are coated witn tin oxide to provide high resistance conducting leakage paths for charges. In the spectrometer shown 3 is the ion source and 34 the collector.
Patent GB-683622-A (GB)
Title: Improvements in or relating to spinnerets and their method of production
IPC: B29C70/54
Filed: 1949-10-31
Abstract: Spinnerets are made by moulding (see Group V) from thermoplastic or thermosetting resins.  There is first formed a laminated structure comprising layers of parallel filaments, which filaments can be removed by a chemical treatment, held separated by material unaffected by the chemical treatment, the parallel filaments of one layer being parallel to the parallel filaments of any other layer.  A solid block of synthetic resin, resistant to the chemical treatment is formed within and surrounding the laminated structure.  The block is cut into plates perpendicular to the filaments which are removable by chemical treatment, and the short filaments left in the plates are removed by chemical treatment.  The expression "chemical treatment" includes removal of the filaments by solution in an appropriate solvent, removal by chemical reaction, and removal by electrolytic means.  Textile filaments, glass-filaments, or metal wires resistant to the chemical treatment may be incorporated in the spinneret as reinforcement.
Patent GB-431764-A (GB)
Title: Heat producing mixture and devices for its use
IPC: C09K5/16
Filed: 1933-10-11
Abstract: 431,764. Heating by chemical action. S.U.P.R.I.M. SOC. UNIVERSELLE POUR LA REALISATION D'INVENTIONS MODERNES, 5, Rue Mayran, Paris. Oct. 11, 1933, No. 28011. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 8, 1934]. [Class 64 (ii)] A chemical heating-composition adapted to generate heat on adding water comprises iron powder or chips, potassium chloride and copper sulphate, ferrous or ferric sulphate, or " equivalent salt which can be hydrolyzed." The presence of air is not necessary and the mixture may be enclosed in a waterproof container. A container 1 of waterproof cloth is provided with an admission orifice 3 closed by a flap 4, and is placed within a covering of nonconducting material.
Patent GB-1236631-A (GB)
Title: Valve with compressible seal means
IPC: F16K27/02
Filed: 1968-06-12
Abstract: 1,236,631. Valves; stuffing-box and jointmaking packing. FISHER GOVERNOR CO. 12 June, 1968 [11 Sept., 1967], No. 28023/68. Headings F2B and F2V. A valve has a housing with an inlet 19 and an outlet 18, a valve bonnet 14, an annular seat 24, a tubular valve cage 22 abutting the seat and having openings 28 forming part of the flow passage through the valve, a valve plug 26 guided in the valve cage for movement towards and away from the seal, and compressible seal means 36 between the bonnet and cage remote from the flow passage to accommodate dimensional variations between the body, seat and cage. The seal comprises a pair of spirally wound strips 69 and 70 of asbestos sheet and stainless steel, the asbestos sheet 70 initially projecting above and below the stainless steel strip 69 until compressed between gaskets 64, 65 of soft metal or asbestos sheet which may be metal jacketed. The strip 69 digs into and extrudes or deforms material from the gaskets 64, 65. Packing 40 for the valve spindle is compressed by a spring 48 bearing at its lower end on a wiper ring 54. An actuator mechanism may be secured on the bonnet between a shoulder 62 and a lock-nut 60. A further felt wiper ring 42 is secured between a packing follower 43 and a flange member 44. Specification 1,236,632 is referred to.
Patent GB-1414830-A (GB)
Title: Reading apparatus for optical bar code
IPC: G06K7/016
Filed: 1973-06-13
Abstract: 1414830 Pulse shaping PITNEY-BOWES Inc 13 June 1973 [19 June 1972] 28069/73 Heading H3T [Also in Division G4] A dual level clamping circuit responsive only to transistors of signals from a photocell 18 in a hand-held or fixed reader comprises a capacitor C3 initially charged from +15 volts via resistors R9 to provide a positive voltage amplified to produce a negative voltage at 78. Diodes D3, D4 and D5, D6 hold junctions 56, 62 respectively 1À2 volts above and below junction 78 until the capacitor is charged whereupon there is zero voltage drop across R9. When a light background area on a card carrying dark bar codes is sensed the output of amplifier 36 rises and the voltage at 46 rises until it is clamped by diode D1. When a first bar is detected the signal level falls and the voltage at 46 follows the input signal. The clamping voltage at junction 62 follows the output of amplifier 60 but at a voltage 1À2 volts higher until diode D2 conducts to clamp junction 46 at a negative level. When a light coloured bar is detected junction 46 is clamped at a positive level. Amplifier 80, during detection of the background of the card, renders transistor Q1 conductive and a voltage of 0À6 volt equivalent to the base-emitter drop across the transistor is fed back to the amplifier input. When the voltage swing at the amplifier input exceeds +0À6 volt the amplifier produces a negative output to render Q1 non-conductive and raise the output at its collector to 5 volts. Junction 82 is then -0À6 volt equal to the drop across diode D7 and when the amplifier 80 input swings more negative than - 0À6 volt its output becomes positive and Q1 conducts.
Patent GB-483096-A (GB)
Title: Improvements in or relating to manufacturing activated magnesium oxide
IPC: C01F5/08
Filed: 1936-10-15
Abstract: An activated magnesium oxide, which may be used for decolorizing oils or sugar solutions or for deacidifying liquids, is obtained by heating precipitated magnesium hydroxide so that 80 to 85 per cent thereof is converted to magnesium oxide.  A magnesium hydroxide slurry produced as disclosed in Specification 467,543 may be filtered to form a paste, the latter be washed to free it from chlorides, and then spray dried.  The powder so obtained may be heated in a rotary kiln fitted with longitudinal baffles at a temperature of 750 DEG  F. for say 6-10 minutes to obtain the activated oxide.ALSO:An activated magnesium oxide, obtained by heating precipitated magnesium hydroxide so that 80-85 per cent thereof is converted to magnesium oxide, is used for decolorizing sugar solutions.ALSO:An activated magnesium oxide, obtained by heating precipitated magnesium hydroxide so that 80-85 per cent thereof is converted to magnesium oxide, is used for decolorizing or deacidifying liquids.
Patent GB-1317797-A (GB)
Title: Hydrazines and hydrazones of pyrazolopyridine carboxylic acids  and esters
IPC: C07D471/04
Filed: 1970-06-10
Abstract: 1317797 Pyrazolo-pyridines E R SQUIBB & SONS Inc 10 June 1970 [16 June 1969] 28164/70 Heading C2C Novel compounds of Formulµ I and II: (in which R 1  is H, alkyl or phenyl-C 1-7  alkyl, R 2  is C 1-7  alkyl, phenyl, phenyl-C 1-7  alkyl, R 6  and/or R 7 -substituted phenyl-C 1-7  alkyl or cycloalkyl-C 1-7  alkyl, R 3  is H, C 1-7  alkyl, phenyl or R 6  and/or R 7 -substituted phenyl, R 4  is H, C 1-7  alkyl, C 1-7  alkanoyl or phenyl, R 5  is H, alkyl or C 1-7  alkanoyl, each of R 6  and R 7  is halogen, C 1-7  alkyl or C 1-7  alkoxy, X is H, C 1-7  alkyl, C 1-7  hydroxyalkyl, phenyl, R 6 - and/or R 7 - substituted phenyl, phenyl-C 1-7  alkyl or R 6  and/or R 7 -substituted phenyl-C 1-7  alkyl, Y is C 1-7  alkyl, C 1-7  hydroxyalkyl, phenyl, R 6  and/or R 7 -substituted phenyl, phenyl-C 1-7  alkyl or R 6  and/or R 7 -substituted phenyl-C 1-7  alkyl or X and Y together with the adjacent carbon atom represent cycloalkylidene or 5-nitro-2- furylidene) and acid addition salts thereof, are prepared by reacting a compound of Formula III: (in which R<SP>1</SP> is Cl, OH, C 1-7  alkoxy or phenyl- C 1-7  alkoxy) with a hydrazine of formula H 2 N.NR 4 R 5 , or a salt thereof, to form a product of Formula I, and, if desired, when R 4  and R 5  in the product are both H, reacting the product with a carbonyl compound of formula XYC = O to form a product of Formula II, and optionally converting either of said products to an acid addition salt thereof. Compounds I in which R 4  is H and R 5  is C 2-7  alkyl may also be prepared by reduction of appropriately substituted compounds II. Compounds of Formula III are prepared by reacting a compound of Formula IV: with a compound of Formula V: (in which R 1  is C 1-7  alkyl or phenyl-C 1-7  alkyl) to give a compound of Formula VI: cyclizing this to give a compound III in which R<SP>1</SP> is OH and R 1  is C 1-7  alkyl or phenyl-C 1-7  alkyl, and, if desired, hydrolysing the ester group to the free acid group and/or converting the OH group to a chlorine atom or an alkoxy group. Pharmaceutical and disinfectant compositions comprise one of the above novel compounds together with a carrier. The pharmaceutical compositions may be used as antibacterial agents, as tranquillizers and in the relief of asthma, and may be in a form suitable for oral, topical or parenteral administration. The compositions may be in the form of a soap or detergent.