baber/WOPTO huggingface dataset:
Patent GB-1202586-A (GB)
Title: Improvements in or relating to lens polishing machines
IPC: B24B13/02
Filed: 1967-10-27
Abstract: 1,202,586. Polishing lenses. COBURN MFG. CO. Inc. 27 Oct., 1967 [28 Oct., 1966], 49003/67. Heading B3D. [Also in Division F2] Linkwork for applying a variable force to a work engager 19 in a lens polishing machine comprises a lever 20 mounted on a pivot 22 and having one end 24 acting on the work engager 19 and the other end acted upon by a spring 28 the tension of which may be varied by a handle lock assembly 30. The spring 28 is attached to the end of an arm 42 of the assembly 30, the arm 42 being integral with a cam 31 having a cylindrical portion 32 and flat cam surface 44. A handle 34 is clamped to a bush 36 which is rotatably mounted on cam 32 and has a cut out portion 50 which receives a roller 38 which is retained by a cover 40 secured to a fixed support 52a. The work engager 19 comprises a spacer bar 18 having pins 16 drivingly engaging a lens block 14 to which is attached the lens blank 12; a lap 10 has irregular movements in a plane.
Patent GB-1055250-A (GB)
Title: Improvements relating to hydraulic transmission circuit
Inventor: ATKINSON RICHARD LESIE
IPC: B62D49/06
Filed: 1963-12-12
Abstract: The subject-matter of this Specification is identical with that described in Specification 1,055,248 but the claims are concerned with the hydraulic control of a gate through which grit is discharged.
Patent GB-1127769-A (GB)
Title: Hoists
Inventor: DUNSTAN THOMAS WILLIAM ARMSTRO
IPC: B66D1/76
Filed: 1964-12-03
Abstract: 1,127,769. Winches. JOSEPH LUCAS (INDUSTRIES) Ltd. 2 Dec., 1965 [3 Dec., 1964], No. 49150/64. Heading B8B. A hoist including winding and storage drums 11, 26 for a cable 31 and cable guiding means 32 between the two drums, comprises a driving means for the drum 11 which means drives the storage drum 26 via gearing, at a speed greater than that of the drum 11, and a spring- loaded friction clutch 22, 23, 24 in the drive between the two drums to limit the tension in the cable 31 between the two drums. The winding drum 11 driven by an hydraulic motor 10 incorporates a gear 15 which meshes with gear 16 mounted in a housing 17 secured to the hoist supporting structure 18. The drive from gear 16 passes through a uni - directional pawl and ratchet 19, 20 to clutch plate and facing 22, 23 and through a second clutch plate 24 including a gear which meshes with a gear 25 on the storage drum. A compression spring 28 is selected to give a predetermined engaging force between the clutch plates whereby the tension in the cable 31 between the drums 11, 26 is limited prior to clutch slip. A brake 13 is provided between the winding drum 11 and sprindle 12 which when disengaged allows the drum 11 to pay out cable whereupon the pawl and ratchet 19, 20 freewheels. During cable pay out the storage drum 26 has a turning force applied to it by the cable 31 and this force has to overcome the clutch friction before drum rotation occurs, since the clutch plate 22 is held stationary, during pay out, by a uni-directional pawl and ratchet mechanism 29, 30.
Patent GB-978204-A (GB)
Title: Improvements in or relating to copper drossing of lead bullion
Inventor: DAVEY THOMAS RONALD ALBERT
IPC: C22B13/06
Filed: 1962-12-31
Abstract: <PICT:0978204/C6-C7/1> Lead bullion is refined and freed from copper by mixing it at a high temperature, e.g. from a blast furnace at 900 DEG C., with a previously treated bullion containing less copper and at a lower temperature, and cooling the mixture which is at 410  DEG C., whereby copper dross rises to the surface, recirculating a major portion of the treated bullion, and withdrawing a minor portion of the refined metal.  The surface of the metal is maintained above the melting point of the dross, e.g. 1100  DEG C., which is withdrawn through an overflow, eliminating the normal manual skimming operation.  A refining furnace 10 is divided by submerged vertical partitions into mixing (A), inflow (D), discharge (E), and reservoir compartments.  Crude hot bullion enters at 44 at the rate of 25 tons per hour and passes downwards through a body of recirculating metal moving at the rate of 600 tons per hour through mixing compartment A and back to a cooler C through a pump B. The cooler is provided with a rotating conical member fed with water, which cools the metal to about 380  DEG C.  Treated metal is removed by a pump F at the rate of 25 tons per hour. A burner at 46 provides hot gases flowing over the surface of the floating molten dross. Copper may be added to reduce the arsenic content which may appear in the dross which flows out at 23, or as a coating on the water-cooled rotor together with antimonides and sulphides. The subsequent de-silverizing of the refined metal is thus simplified.  In a modification the cooling stage consists of a long U-shaped open-top channel in which are suspended vertical plate-form coolers through which water circulates.
Patent GB-1165717-A (GB)
Title: Gypsum Calcining Kettle and method
IPC: B01J6/00
Filed: 1966-11-03
Abstract: 1,165,717. Discharging calcining kettles. UNITED STATES GYPSUM CO. 3 Nov., 1966 [15 Nov., 1965], No. 49379/66. Heading F4B. Apparatus for discharging a gypsum calcining kettle comprises an open-ended conduit 26 attached to the wall 16 and opening at the top into a valve chamber 38 incorporating slide valves 40 and 42 respectively controlling openings leading back into the kettle or to a discharge shoot 36, a pipe 47 opening into the base of the conduit 46 to supply fluidizing gas, e.g. air or steam. In a modification, Fig. 2 (not shown), the conduit is disposed outside the kettle wall, so that three sides of it are exposed to the heating gases.
Patent GB-1367455-A (GB)
Title: Support devices
IPC: F16L3/205
Filed: 1971-10-18
Abstract: 1367455 Spring support; eg for pipes PIPE SUPPORTS Ltd 18 Oct 1971 [17 Oct 1970] 49393/70 Heading F2S  In a constant-force spring and lever support device, e.g. for pipes, the lever, comprising a pair of bellcrank plates 15, is fulcrummed on a pin 16 on a frame 10. The lever carries means 23 for the attachment of a load thereto at one end and at the other end is pivotally engaged with spring-mounting means 30. A compression spring 12 extends between the mounting means 30 and further mounting means 29 by which the spring is pivotally engaged with the frame 10. As shown, an extension 13 of the frame 10 carries a pin 37 which bears on a surface of an arcuate member 35 mounted on the spring mount 29 by depending lugs (34) (Fig. 2, not shown). The lower spring mount 30 carries a pivot pin 40 attached to a lug 38 which is received in a bearing block 39. The block 39 is slidable along guides (48) (Fig. 2, not shown) mounted on each of the opposed inner surfaces of the bellcrank levers 15, the block being adjustably attached to the levers by a bolt 43 carrying a nut between travel-limiting stop plates 46, 47. The spring load-factor is set by means of the bolt 43 and is indicated on a scale 52. The arm 18 of the lever on the load side of the fulcrum carries a screw 23 and turnbuckle 24 on a pin 22 and a pivoted channel member 25 in which a scale 26 may slide. A stop 27 on the frame 10 limits the extent of pivotal motion of the lever 15 about the fulcrum pin 16. Vertical movement of a load attached to the turnbuckle 24 pivots the lever and ajusts the degree of compression of the spring 12 as preset by the position of the block 39 relative to the lever so that the load is supported by a constant force. A locking pin may be inserted through aligned holes 21 in a third arm of the lever plates and a hole 57 in the frame 10, e.g. during cleaning or testing of a pipe. In an alternative embodiment, the adjusting block 39 and bolt 43 may be omitted or disposed on the load arm side of the fulcrum 16 so that the distance between the pin 22 and fulcrum 16 can be varied.
Patent GB-1131584-A (GB)
Title: Liquid metal magnetohydrodynamic generators
IPC: H02K44/08
Filed: 1966-11-07
Abstract: 1,131,584. Nuclear power plant. UNITED STATES ATOMIC ENERGY COMMISSION. 7 Nov., 1966 [3 Dec., 1965], No. 49758/66. Heading G6C. [Also in Division H2] An MHD generator has a partially vaporized liquid metal directed on to a flat electrode carrying wall of a duct so that a thin film of liquid metal passes along the wall through a magnetic field to generate a voltage between the electrodes. Metal vapour is accelerated through throat 22 of convergent/divergent nozzle 12 and directed, at an angle of 3-12 degrees, on to the lower wall of rectangular duct 23. The impact separates out the liquid which passes as a thin film along the duct wall to generate a voltage between electrodes 24 by interaction with the magnetic field produced by magnet 25. In an experimental apparatus, a mixture of nitrogen and NaK was used as the two-phase working fluid at room temperature and both duct and nozzle were made of plastics material. In a power plant, the liquid metal is the coolant of a nuclear reactor and flows in closed circuit through a generator 13, heat exchanger 14 and diffuser 16. Heat exchanger 14 is used to produce steam for turbogenerator 15.
Patent GB-1070806-A (GB)
Title: Stabilized fluidized beds
IPC: B01J8/42
Filed: 1964-12-07
Abstract: Fluidised beds of particles having a moderate surface electroconductivity are stabilised by applying to at least a portion of the bed a high voltage sufficient to cause a corona discharge therein.  The application of the high voltage results in the particles remaining stationary in the expanded bed and enables finer particles than usual to remain therein.  The voltage may be A.C. or D.C. and may be applied by first and second electrodes which include a space containing at least part of the bed: in Examples a lower electrode is in the form of an earthed horizontal screen supporting the bed and an upper electrode is in the form of a rod projecting downwardly from the top of the reactor, and voltages of 24,000-100,000 are referred to. Catalytic particles and particles of alumina, magnesia, uranium oxide, sand, sodium and potassium chloride, sodium tungstate, potassium permanganate, b -naphthol, salicyclic acid and sugar are referred to, and in the examples glass beads are fluidised. When difficulty ionisable gases such as argon are used, a `quenching agent' such as methane may be added to prevent arcing and encourage corona discharge.
Patent GB-1376891-A (GB)
Title: Silicon nitride ceramics
IPC: C03C1/00
Filed: 1970-10-20
Abstract: 1376891 Silicon nitride ceramics UNITED KINGDOM ATOMIC ENERGY AUTHORITY 19 Oct 1971 [20 Oct 1970] 49855/70 Heading C1J [Also in Division C7] A ceramic shaped object comprises Si 3 N 4  or Si 3 N 4  and BN protected from oxidation by a coating of a fluxed borosilicate glass 1 comprising at least 1 wt. per cent (e.g. up to 50 wt. per cent) of the object and containing 1-20 wt. per cent B 2 O 3  based on the weight of coating. The object may be made by heating Si 3 N 4  in an oxidizing atmosphere to convert a part thereof to a SiO 2 / B 2 O 3  glass, the boron being provided in Si 3 N 4  prior to oxidation in the form of elemental B, BN or B 2 O 3  or added to the material during oxidation if B 2 O 3  is present in the atmosphere. The product, having been fabricated to form an object is then heated to flux the glass. Up to 10 wt. per cent of Fe, Mg, Al, Al 2 O 3 , MgO, CaO, BaO, ZnO or ZrO 2  may be present in the object. Various methods of obtaining the object from Si or Si 3 N 4  comprising the steps of fabricating, nitriding and oxidation in different orders are described (see Figure).
Patent GB-1067808-A (GB)
Title: Process and composition for reducing the change of taste and odour in penicillins
Inventor: BAUER KLAUS
IPC: C07D499/18
Filed: 1965-11-24
Abstract: Pencillin antibiotics are stabilized against taste and odour changes by incorporating from 0.01 to 2% by weight of the antibiotic of an a ,b -unsaturated aliphatic carboxylic acid or a salt or ester thereof. Maleic acid and sodium maleate are specified.ALSO:Penicillin antibiotics alone or in compositions are stabilised against change of taste and odour by incorporating from 0.01 to 2.0% by weight of the antibiotic of an a , b -unsaturated aliphatic carboxylic acid or a salt or ester thereof.  Maleic acid and sodium maleate are specified.
Patent GB-1029528-A (GB)
Title: Fluid flow rate meters
Inventor: CHAPMAN WILLIAM PAUL
IPC: G01F1/06
Filed: 1964-12-09
Abstract: 1,029,528. Fluid pressure servomotor systems; regulating fluid flow. JOHNSON SERVICE CO. Dec 9,1964, No. 50074/64. Headings G3H and G3P. [Also in Divisions F1 and F2] Apparatus for measuring and controlling fluid flow comprises a toothed disc 16 rotated at a speed proportional to flow in a line 13 via a paddle wheel 12 and shaft 11. The teeth on the disc cooperate with an emitter nozzle 19 and an opposed collector nozzle 22 to produce pressure pulses in a line 23 communicating with the interior of a hollow diaphragm 27 located in a valve housing 25. The diaphragm engages one end of a lever 28 pivoted at 29, the other end of the lever carrying garter spring 31 which cooperates with the spherical head 33 of a valve stem 34 carrying a closure member 35. The closure member 35 cooperates with seats 36, 50, the latter surrounding a port connected to a line 40 leading to a bellows 41 carrying an indicator 42 and to a valve 55 in the conduit 13. A restricted leakage passage 44 from line 40 is provided. When there is no pulse in line 23, spring 30 rotates lever 28 counter clockwise to force the garter spring over head 33 to cause the valve to engage seat 50. With the valve in this position, a pressure supply in line 38 charges a small reservoir 39. When the diaphragm receives a pulse it rotates the lever to cause the valve to engage seat 36. In this position the reservoir discharges to line 40. The pressure level in line 40 is thus a function of the pulse frequency which in turn is a measure of the flow rate. In the system shown, the valve 55 controls bypass from lines 59, 60 supply ing hot water, the water being circulated by a pump 58 and heated by a unit 57. The indicator 42, 43 may be replaced by a recorder. A flow totaliser is provided at 14. In the embodiment of Fig. 2, not shown, supply line 38 is omitted, the line 40 receiving its supply via a restriction 138<SP>1</SP> from line 138. When the valve engages seat 150, the reservoir is exhausted via passage 170. The pressure level in line 140 is thus dependent on the pulse frequency i.e. the frequency with which the reservoir is discharged.
Patent GB-1531589-A (GB)
Title: Supercharged carburettor engine
IPC: F02B37/00
Filed: 1976-12-02
Abstract: 1531589 Supercharged IC engines SAABSCANIA AB 2 Dec 1976 [10 Dec 1975] 50280/76 Heading F1B In a supercharged I.C. engine 1, provided with an exhaust gas turbine (8) driven compressor 5 having upstream thereof a carburetter 4, and downstream thereof a throttle valve 6, a drain 15 for condensed fuel runs from the lowermost compressor part to the intake pipe. A by-pass 9, controlled by a valve 10 operated by intake manifold pressure via line 17, may be provided to regulate the compressor speed and supercharging pressure.
Patent GB-1525949-A (GB)
Title: Automatic display segment intensity control
IPC: G09G3/14
Filed: 1975-12-08
Abstract: 1525949 Alphanumeric displays and circuits therefor HEWLETT PACKARD CO 8 Dec 1975 [23 Dec 1974] 50287/75 Heading G5C The current supplied to light emitting segments 130 ... 136 of a display device is varied in accordance with the number n of segments selected to achieve uniform apparent brightness of a display symbol irrespective of the number of segments selected. Preferably the segment brightness varies according to 1/#n. The variation is produced by passing the current to all energized segments through a resistor 140 and then to individual power control circuits 100 ... 106 which maintain a constant potential at the point between resistor 12 and transistor 10. The segments comprise LED's.
Patent GB-1202390-A (GB)
Title: Improvements in or relating to pyrotechnic compositions
Inventor: ARMSTRONG MALCOLM JOSEPH
IPC: C06B45/10
Filed: 1967-11-06
Abstract: 1,202,390. Pyrotechnic compositions and propellants. ASTRA FIREWORKS Ltd. 24 Oct., 1968 [6 Nov., 1967], No. 50346/67. Heading ClD. A pyrotechnic composition comprises a mixture of a liquid phenol-resorcinol-formaldehyde resin and an ammonium, alkali metal, alkaline earth metal or urea nitrate, an alkali metal or alkaline earth metal chlorate, or an ammonium, alkali metal or alkaline earth metal perchlorate or chromate. Paraformaldehyde or formaldehyde may be present as polymerization catalyst. A small amount of alcohol may be added. Metal ingredients such as Mg, Fe, Zn, Ti, Cu, Al, Sb, Mn and Zr may be added in the uncoated state. Examples describe coloured smoke, coloured star, and rocket compositions, and compositions for use in cones, fountains, tourbillons, saxons, sparklers, whistling fireworks, and humming rockets. Ingredients additional to those specified above are sodium and potassium chlorate, potassium and barium nitrate, potassium perchlorate, Rhodamine B, strontium oxalate, polyvinyl chloride, charcoal, trihydroxybenzoic acid and salicylic acid. The rocket composition may be used in the rocket device of Specification 1,2C2,389.
Patent GB-1439939-A (GB)
Title: Cross-linkable composition
IPC: C08F279/02
Filed: 1972-11-02
Abstract: 1439939 Moulding compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Jan 1974 [2 Nov 1972] 50480/72 Headings C3G and C3P A moulding composition comprises (a) 40- 95% of a copolymer of a conjugated diene and a non-conjugated diene having a glass-rubber transition temperature of less than 25‹ C. and containing polymerizable groups and (b) 60- 5% of an ethylenically unsaturated monomer. In examples (a) is a copolymer obtained using an anionic initiator of butadiene or isoprene and divinyl benzene, in one case polymerized on to a living polymer of t-butyl styrene and (b) is methyl methacrylate, optionally with dimethylaminoethyl methacrylate and/or glycol dimethacrylate, styrene, styrene/acrylonitrile or lauryl methacrylate. A free radical or photoinitiator may be included and optionally a filler.
Patent GB-1170432-A (GB)
Title: Improvements in or relating to Electrical Phase Modulation Transmission Systems
Inventor: MIYAGI MASAHISA
IPC: H04B14/00
Filed: 1966-11-10
Abstract: 1,170,432. Companders. NIPPON ELECTRIC CO. Ltd. 10 Nov., 1966, No. 50528/66. Heading H4R. In a frequency, or phase, modulation transmission system compression is provided at the transmitter and expansion at the receiver with the degree of compression and expansion being dependent on frequency content of the signal to be transmitted. The compression and expansion are increased with increase in frequency of the input signal. Fig. 9A shows a transmitter in which signals from a source 15 are applied via a branching network 17 to a phase modulator 16 and to a modulation sensitivity control circuit, or compressor, 22 which, by rectifying the input signal in rectifier 20, reduces the sensitivity of modulation as the input level is increased. A frequency dependent network 18 increases the level of higher frequency components relative the lower frequency components of the input signal so that the modulation sensitivity is reduced more for H.F. input signals than for L.F. input signals. Frequency converter 5 and H.F. amplifier 6 may be provided if required. Fig. 9B shows a receiver which, conventionally, includes a frequency changer 10, I.F. amp. 11, demodulator 23, and deemphasis circuit 24. The signal from 24 passes via a branching network 25 to a variable gain arrangement, or expander, 30, where the amplitude of the signal is modified by a control signal derived from the signal via a frequency dependent network 26, which emphasises high frequency components, amplifier 27, rectifier 28, and low-pass filter 29, so as to increase the gain of high level signals, the increase being greater with high-frequency input signals than with low. The variable gain arrangement may be a variable gain amplifier, or amplitude modulator, or a pulse width modulator followed by a smoothing circuit.
Patent GB-1181060-A (GB)
Title: Improvements in or relating to Horn Aerials
Inventor: BROWN WILLIAM FREDERICK
IPC: H01Q13/02
Filed: 1966-01-31
Abstract: 1,181,060. Aerials. MINISTER OF TECHNOLOGY. 27 Jan., 1967 [31 Jan., 1966], No. 50815/69. Divided out of 1,179,263. Heading H4A. A conical electromagnetic horn has an oval cross-section in a plane at right angles to its central axis. The oval cross-section is symmetrical about its major axis and about its orthogonal minor axis, and may be elliptical. A means such as a rectangular waveguide is connected to the apex of the horn, to which it couples plane polarized waves having their electric vectors disposed substantially parallel to the aforesaid major axis. It is stated the radiation diagrams of the horn are comparatively free from troublesome side lobes, and are less frequency sensitive. Adjustment is possible by deforming the conical horn to alter the aspect ratio (major axis/minor axis) of its crosssection.
Patent GB-1468190-A (GB)
Title: Metal frame member
IPC: E06B3/988
Filed: 1974-11-26
Abstract: 1468190 Structural joints D W EKERT and P A EKERT 26 Nov 1974 [30 Nov 1973] 51226/74 Heading F2M [Also in Division E1] Building elements, e.g. wall plates, studs or noggings are of sheet metal rolled to a channel section the web of which has a pair of shallow grooves 14, 15, transverse slots 16, 17 being cut in the bases of the grooves and/or lugs 19, 20 being formed on one or both ends of each element, whereby the elements may be secured together at right angles by passing a pair of lugs on one element through a pair of slots in another element and bending the lugs over in the grooves, the depth of the grooves being sufficient to accommodate the thickness of the lugs when bent over. Fig. 1 shows two elements 10, 11, the former having a number of pairs of slots 16, 17 at selected positions along its length and the latter having in addition to the lugs 19, 20 a reduced width end portion 18 to fit between the flanges of element 10. Fig. 3 shows a stud formed by three elements 30, 31, 32 held together at their upper ends by a connecting piece 35 which is flanged and has lugs 36 and slots 37 to correspond respectively with pairs of slots in two top plates 33, 34 and lugs on the ends of the elements 30, 31, 32. The elements 30-32 may additionally be secured together by an internal horizontal plate having three pairs of lugs (Fig. 5, not shown) which fits in the rectangular space between the elements and is secured to the latter by the lugs passing through slots in the webs of the elements and bending them over. A further connecting piece (Fig. 7, not shown) is a channel-section member of slightly greater width than that of the elements, for connecting two elements end to end by passing punchedout tabs on the connecting piece through slots in the webs of the elements and bending them over.
Patent GB-1436509-A (GB)
Title: Method for producing s-adenosylmethionine or methylthioadenosine  from yeast
IPC: C12P19/40
Filed: 1974-11-27
Abstract: 1436509 5 - 5<SP>1</SP> - Deoxy - adenosin - 5<SP>1</SP> - yl)- methionine and 5<SP>1</SP> - S methyl - 5<SP>1</SP> - thioadenosine AJINOMOTO CO Inc 27 Nov 1974 [27 Nov 1973 (2)] 51319/74 Heading C2C S - (5<SP>1</SP> - deoxy-adenosin - 5 - yl)methionine (SAM) and 51-S-methyl-5<SP>1</SP>-thioadenosine (MTA) are prepared by culturing a yeast belonging to the genus Saccharomyces Candida, Pichia, Rhodotorula, Hansenula, Torulopsis, Trichosporon, Lepomyces, Sporobolomyces, Cryptococeus, Koeclclera or Hanseniaspora in a conventional culture medium containing 0À5 to 2À0 g./dl. L-methionine at pH 3 to 5 and recovering accumulated SAM and/or MTA from the culture broth and or cells. SAM and MTA are used as fuel additives and SAM has anti-fatty acid activity.