baber/WOPTO huggingface dataset:
Patent GB-1080476-A (GB)
Title: High-power amplifier systems
IPC: H03K7/10
Filed: 1966-06-17
Abstract: 1,080,476. Control of motors. LEEDS & NORTHRUP CO. June 17, 1966 [July 12, 1965], No. 27252/66. Heading H2J. [Also in Division G1] A system for energizing a servo motor 19 in response to a D.C. error signal comprises means for generating pulses, both the mark-space ratio and the amplitude of which are varied in response to the error signal. The system is applied to a self balancing voltage bridge arrangement in a pen recorder. The error voltage is amplified at 12 by transistors and is applied to either of two AND gates according to polarity of error. Another input to each AND gate is supplied from a pulse generator 16 producing pulses of constant magnitude but mark-space ratio dependent on the error signal which is supplied to it from both channels via an OR gate 15. Thus the amplified error signal is gated by the variable pulses, and after further amplification energizes the servo motor. In one arrangement (Fig. 2, not shown) the pulses are of constant width but their frequency is varied by the error signal affecting the conduction of a transistor (45) in series with a capacitor (46). In this instance the motor is a D.C. permanent magnet machine powered by batteries, and shunted by a smoothing capacitor (56). In an alternative (Fig. 5, not shown) the frequency is constant but the pulse width is governed by the error signal applied to a winding (72) on a magnetic amplifier (70). In this case the motor is an A.C. machine having a reference phase winding and a control winding and the power amplifier supply is rectified, unsmoothed A.C. In either case the OR gate may incorporate an R.C. circuit (61, 62, Fig. 4, not shown) the time constant of which is such that if the motor is stalled (against a stop) the signal applied to the pulse generator is reduced to a low value. The AND gates have a definite threshold level which provides a " dead band effect " at small errors.
Patent GB-1015925-A (GB)
Title: Thermographic process and materials
IPC: B41M5/26
Filed: 1962-07-16
Abstract: 1,015,925. Thermographic materials and transfer processes. EASTMAN KODAK CO. July 16, 1962 [July 14, 1961; June 27, 1962], No. 27283/62. Heading G2C. Copies are made by a thermographic transfer process using a material comprising a flexible support coated with either a crystalline polymer having a tackifying point between 50 and 200C. or a non-crystalline polymer admixed with a crystalline non-polymeric substance melting between 50 and 200C, the mixture having a tackifying point, which is imagewise exposed to infra-red radiation to produce a tacky image which remains tacky below the tackifying point, pressed against a receptor sheet to transfer at least part of the image and repeating the transfer on to further receptor sheets if desired. Specified crystalline polymers are polybutene, polypentene, poly(tetra- or penta-methylene) carbonate, polyethylene succinate, poly(2, 2 dimethyl trimethylene succinate, poly (1, 4 cyclohexanedimethylene adipate or succinate) polyethylene glycol, polypentamethylene terephthalate, polyethylene 1,4 cyclohexane dicarboxyolate and cyclohexanedimethylene adiphate/ azelate copolymers. Other polymers can be found among polyvinyls, polyacrylics, polyesters, polyamides, polyesteramides, poly-carbonates, polyethers, polyurethanes and polyureas. Non-crystalline polymers are atactic polystyrene, polyvinyl acetate, butadiene/styrene copolymer, polyalkyl acrylates and methacrylates, polyterpenes, poly vinyl butyral, cellulose butyrate or acetate butyrate, pllyethylene terephthalate, vinyl chloride/ vinyl acetate copolymer and phenol/formaldehyde resins. Crystalline non-polymeric substances specified are the benzoates of 4 biphenylyl, engenol, 4-cyclohexylphenyl and pentachlorophenyl; camphor;bensoin acetate; pentacrythritol tetra-isobutyrate; 2, 6 di-t-butyl-4-methyl phenol; triphenyl orthoformate; N, pentyl-1, 8-naphthali-mide; bis (o-methoxy-phenyl) carbonate; 2, 5, 5-triphenyl-1, 3-dioxolan-4-one; bis (benzyloxy di-phenylmethane and anthraquinone-2-carboxyethyl. The heat-sensitive layer may include dyes or substances to decrease the amount of polymer and modify the layer such as clay, glass beads, quartz, polymethylmethacrylate beads, titanium dioxide, zinc oxide, alkyl phthalates or fumarates,tricresyl phosphate, menthol, eugerol or isoeugenol. A polymeric overcoat such as polyvinyl alcohol or carboxymethylcellulose which is not porous to the tacky material may be applied to the heat-sensitive layer and removed before transfer. The heat-sensitive material may be "annealed" before exposure, i.e. heating the material to a temperature between the glass-transition temperature and the tackifying temperature to improve its crystallinity. Used materials may also be reclaimed by such annealing. The final copies may be used as hectographic or lithographic masters.
Patent GB-661565-A (GB)
Title: Improvements in methods of welding overlapped weldable material
Inventor: SYKES THOMAS ROBERT
IPC: B23K11/11
Filed: 1948-10-20
Abstract: 661,565. Electric welding; joints. TORONTO STAR, Ltd. Oct. 20, 1948, No. 27308/48. Class 83 (iv). In a method of welding materials brought into overlapped relation without initial preforming or regard to overlap length, pressure is applied to the overlapped materials over any area throughout the overlap to rotate the portions of the materials under pressure relative to the material each side of the overlap to eliminate eccentricity produced between the materials on overlap, and heat is applied to the area under pressure to effect welding between the rotated portions. In an embodiment, two wire segments 1, 2 are overlapped and placed between electrodes 6, 7 provided with transverse bevelled, slightly crowned surfaces 8, 10, grooved at 9, 11 to receive the wires 1, 2, and the electrodes 6, 7 are pressed together to deform the wires 1, 2 simultaneously with the application of welding current to effect welding. The electrode 7 is wider than the electrode 6. The exposed ends of the wires 1, 2 may be bent into the plane of the adjacent segment by means of a rod 13. The material welded may be thin plate or strips.
Patent GB-319925-A (GB)
Title: Improvements in vehicle brakes
IPC: F16D51/50
Filed: 1928-09-24
Abstract: 319,925. Flanigan, E. B. Sept. 24, 1928. Shoes acting on drums. - A reversible servobrake more particularly for the front steering wheels of a vehicle comprises two interchangeable shoes or like brake-members 14, 15 concentric with a drum 10 and pivoted at their lower ends to a connecting link 18, which is suspended by means of a second link 22 from a pivot stud 23 on the brake-plate 12. An expanding cam 26 is situated at the top, and is of such a form as to give only a small reaction during forward braking. A release spring 30 is located a considerable, distance above the steering knuckle 11. The link 22 may be adjustable to position the shoes, while close adjustment may be effected by means of an eccentric 31. The link 18 is formed of two parallel plates between which the link 22 and the webs of the shoes 14, 15 are pivoted.
Patent GB-1096054-A (GB)
Title: Improvements in piston assemblies for swash plate piston machines
Inventor: FIRTH DONALD
IPC: F01B3/00
Filed: 1963-07-11
Abstract: 1,096,054. Swash plates. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 2, 1964 [July 11, 1963], No. 27457/63. Heading F2K. A piston 1 is urged out of a cylinder 2 of a rotating cylinder block 3 against a swash plate 5 by a spring 10 one end of which bears against a seat 14 freely rotatable, on a spigot 15, about the cylinder axis, the other end of the spring 10 bearing against a differently-rated spring 9 through a sliding steady ring 11, of T-section. In a modification. Fig. 2 (not shown), the spring seat (14a) has a spherical socket rotating on a spherical spigot (15a) in the piston crown. The flange of the T-section ring 11 may lie radially either side of the springs. Axial bores in the seat 14 and spigot 15 carry oil through a ball joint to a slipper 4 abutting the swash plate 5. A rotatable spring seat may be provided at each end of the spring combination.
Patent GB-915139-A (GB)
Title: Basic heterocyclic monoazo dyestuffs
IPC: C09B26/04
Filed: 1960-08-08
Abstract: The invention comprises dyes of formula <FORM:0915139/IV (b)/1> where R is the residue of a 5- or 6-membered ring, R3 is H or alkyl, cycloalkyl, aralkyl or aryl, R4 is alkyl, cycloalkyl, aralkyl or aryl, X is an acid residue, A an aryl or hetero residue and n is 1, 2 or 3.  The dyes, except where R3 is H and R4 is aryl, may be made by treating a compound of formula <FORM:0915139/IV (b)/2> where Z is an acylamino group, with quaternising agents, and hydrolysing to give an amino group.  The starting dyes are made by diazotising appropriate aromatic and heterocyclic primary amines and coupling with the required active methyl- or methylene-hetero-cyclic compound. Representative of specified amines are 4-amino-acetanilide, 1-amino-3,4-diacetylaminobenzene, 1-amino-5- acetyl-amino-naphthalene, 3-aminopropionic acid-anilide, 4-aminobenzanilide and 4-acetylbenz-idine.  Examples of indicated heterocyclic compounds are 1,3,3-trialkyl-2-methylene-in-dolines, 1-alkyl-2-methylenebenzthiazoles, 1-alkyl-2-methylenebenzoxyazoles and 1-alkyl-2-methylene-dihydroquinolines, which may contain substituents in the aryl nucleus.  Dyes may also be made by reacting compounds of formula <FORM:0915139/IV (b)/3> where Y is O, or the residue of an aromatic amine, with compounds of formula H2N-N(R4)-A-(Z)n, and the resulting hydrazones are converted into salts, if desired, or treated, in the form of the free bases, with quaternising agents and Z is hydrolysed to a free amino group. Representative of specified compounds used in this preparation are quinoline-, pyridine-benzthiazole- and 1-methyl-benzimidazole- 2-aldehydes and azo-methines made from 1,2-dimethyl-pyridi-nium or quinaldinium iodide or 1,2-dimethyl-benzthiazolium methosulphate with nitroso-dimethylaniline.  Representative of specified hydrazine compounds are N-4-acetylamino-phenyl-N-methyl- and N-4-acetylaminophenyl-N-benzyl-hydrazine.  The dyes colour textiles, paper and leather, and, if free from carboxylic or sulphonic acid groups, colour polyacrylonitrile.  Examples are provided of the preparation of the dyes and their use in dyeing polyacrylonitrile in red and blue shades. Specification 875,995 is referred to.
Patent GB-914841-A (GB)
Title: Coin separator
IPC: G07D5/02
Filed: 1961-07-31
Abstract: 914,841. Separating and testing coins. ELECTRONIC COIN PROCESSING CORPORATION. July 31, 1961 [Aug. 16, 1960; April 13, 1961], No. 27660/61. Class 27.  A coin separator 22 for separating mutilated coins of a single denomination comprises at least one enclosed flat surface, with slots 72 which are slightly larger than a normal coin to allow passage of the coin when the surface is moved to an inclined position. The separator is shown in Fig. 1 as a box of square crosssection which is rotated by a motor 62 and fed with coins from a compartment of a presorting device 20 by means of a shoot 24, the shoot 26 leading to a similar separator but of one dealing with coins of a larger size. The slots have a depth of about half the diameter of a coin and lie along the trailing edge of each wall upon rotation. Means, as shown in Fig. 9, are provided for removing the bent coins which lodge in each slot and consist of a yieldable cam 120 on a shaft 118 adjacent each slot 72 and operated by a weight 122 carried by an arm 124 mounted at each end of the shaft. In operation, the separator is rotated clockwise in Fig. 9 to cause the coins to slide in the direction of the slots. As the wall 50c, Fig. 9, moves from the horizontal to the vertical position, the cam 120, until it reaches the usual position, is held sufficiently clear of the wall 50c to allow the passage of a coin by the action of a stop 130. When the wall 50c passes the vertical position, the weights 122 fall away and turn the cam so that the periphery of the latter moves closer to the wall 50c, thereby removing the bent coin out of frictional engagement with the slot. Further rotation causes the bent coin to fall back into the separator from the then inverted slot. In another embodiment, Fig. 4, the walls 100 are made of thin sheet metal while the depth of the slot 108 is maintained at half the diameter of a coin by providing a slotted metal block 106. Moreover, the passage for the coin may be provided by the co-action of a thin wall and the cam itself when the latter is spaced away from the wall at a distance equal to the height of the slot. In a further embodiment, Fig. 16, there is provided a stop 214 to prevent the coins from passing out of each slot 220 edgewise. Circular openings 222 in the stop slightly larger than the normal diameter of the coins allow the passage of coins which are undamaged about their circumference. The pre-sorting device 20 shown in Fig. 1 is arranged to separate coins of three different denominations, the coins being fed into the centre of three concentric drums 28, 30, 32, by means of a shoot 40 and discharge from these drums to different separators vary by way of shoots 24, 26; rotation of the drums causes the small size coins to pass through perforations of the innermost drum while retaining the largest and this process being repeated in the next drum 30. Specification 914,017 is referred to.
Patent GB-672616-A (GB)
Title: Improvements in or relating to devices for shuffling playing cards
IPC: A63F1/12
Filed: 1950-11-13
Abstract: 672,616. Shuffling playing-cards. HANDLER, J., and HANDLER, T. Nov. 13, 1950 [Nov. 14, 1949], No. 27684/50. Class 132 (ii). A device for shuffling playing cards comprises a base a having a slightly off-set extension b, side walls d, e having top flanges g, f, and a grating c at one end of the base a. Cards hare placed face downwards on the part b and the device is stood on the remote end, which is bevelled, and shaken about causing the cards to fall in groups through the grating and so to be shuffled. The grating need not be perpendicular to the base a or may be curved or V-shaped in section.
Patent GB-1349829-A (GB)
Title: Mobile cranes
IPC: B66C23/84
Filed: 1972-06-14
Abstract: 1349829 Mobile slueing cranes CLARK EQUIPMENT CO 14 June 1972 [1 July 1971] 27731/72 Heading B8B [Also in Division F2] A crane superstructure is attached by its base 20 to outer race 21 of a slueing bearing the inner race 22 being detachably secured to vehicle bed 13 by wedges 40. The inner race 22 has a number of tangs 37 each of which passes through a corresponding slot 43 in the bed 13. Each tang 40 has a slot 38 with a lower inclined bearing surface 39 engaged by its wedge 40 which also bears on the lower surface of the bed 13. The wedges 40 are inserted by hydrauic jack or sledge hammer and each is retained in position by a cross-bar 49 held by bolts 48 threadedly engaging the tang 37. Rotational movement of the inner race 22 is prevented by bolts 58, 62 with nuts 59, 63 and washers 60, 64 respectively associated with bed frame members 53, 53a and engaging the sides of the tang 36. Each wedge 40 has a tapped hole 50 to assist withdrawal when the superstructure with slueing bearing attached is removed from the vehicle bed 13 for transport. As shown the outer race 21 is in two sections 23, 24 and the inner race 21 has a thrust flange 29. Split roller bearings 31, 32 are held in place by respective retainers 33, 34 above and below the thrust flange 29. Side roller bearings 35 are located between the side of the thrust flange 29 and an annular channel 25 formed in the outer race 21.
Patent GB-1220787-A (GB)
Title: Treatment of textile material
IPC: G01N1/10
Filed: 1969-06-02
Abstract: 1,220,787. Vapour-treatment of textiles. ARTOS DR. ING. MEIER-WINDHORST KG. 2 June, 1969 [20 June, 1968], No. 27760/ 69. Heading D1L. The course of a chemical treatment of textile material with vapour in an enclosed chamber is monitored by condensing a portion of the vapour and determining a property thereof, e.g. electrolytic conductivity or amount of condensate produced in a given time As shown, vapour is continuously condensed in a chamber 2 on a condenser 4 attached by coolant inlet and outlet pipes 5 and 6 to a chamber closure plate 3 and is withdrawn via. a funnel 7 and U-tube 8.
Patent GB-304355-A (GB)
Title: Improvements relating to cements, paints and the like
IPC: C23C2/02
Filed: 1927-10-19
Abstract: 304,355. Rodwell, A. G., Roper, W., and Hart, A. J. C. Oct. 19, 1927. Plastic compositions containing soluble silicates; metals.-A medium for cements consists of an alkali silicate and sodium nitrate. A preferred composition consists of 60 volumes of commercial sodium silicate (140 Tw) to which is added 35 volumes of water and 5 volumes of a saturated aqueous solution of sodium nitrate. The amount of sodium nitrate should not be less than half or more than twice the amount indicated. The medium may be used with finely divided metals such as zinc, earths, pigments, and fillers as white lead, barium and calcium carbonates and other mineral carbonates, zinc oxide, &c., or for binding purposes with fireclays, &c.
Patent GB-261017-A (GB)
Title: An improved process of coating articles of various kinds with metal
IPC: C25D5/54
Filed: 1926-11-05
Abstract: 261,017. Feldman, E. D., (Assignees of Daly, J. A.). Nov. 6, 1925, [Convention date]. Roofing, blocks, slabs, and tiles.-Articles such as shingles to be coated with metal are first coated with a sticky substance such as paint, varnish or asphalt, which is allowed to set until tacky and then coated with finely divided particles of an alloy of lead and tin, the surface thus formed being finally electroplated with copper or other metal. The articles may be of wood, tile, metal or felt, or of asbestos or felt saturated with asphalt. The applied metal may be fused electrically or by an oxy-hydrogen flame and projected against the sticky surface in an atomized condition by means of a blast. Alloys of equal parts of tin and lead, or of 25 parts of tin to 75 parts of lead are suitable.
Patent GB-996544-A (GB)
Title: A process for producing amino acids
IPC: C12P13/14
Filed: 1963-07-12
Abstract: Amino acids such as glutanic acid, aspartic acid, alanine, phenylalanine, lysine, arginine, tyrosine, isolevicene, valine, glycine, threonine, tryptophan, proline and serine are prepared by cultivating a microorganism in a medium containing a hydrocarbon, a nitrogen source, inorganic substances and, if desired, growth-promoting substances under aerobic conditions, said microorganism being one which is capable of growing on one of the following media, viz. (a) a medium containing keronsine 10g., NH4Cl 2.0g., Na2HPO4.12H2O 1.0g., KH2PO4 1.5g., MgSO4.7H2O 0.5g., NaCl 2.0g., and 1 litre of distilled water; (b) a medium containing crude petroleum 10g., NH4NO3 2.5g., Na2HPO4 12H2O 1.0g., KH2PO4 1.5g., MgSO4.7H2O 1.5g., MnCl2 0.2g., CaCl2 trace, FeSO4.7H2O trace, MoSO4 trace, CaCO3 (separately sterilized) 0.5g., and 1 litre of distilled water; (c) a medium containing dissolved methane and/or propane, NH4Cl 1.0g., KH2PO4 0.5., MgSO4 0.2g., FeCl3 trace, and 1 litre of distilled water, which medium is in contact with a gas mixture of air and methane and/or propane the ratio of air: methane and/or propane being 1 : 1; or (d) a medium comprising either of mediums (a), (b) or (c) together with a growth promoting substance. Suitable hydrocarbon sources are liquid paraffin, kerosine, light oil, heavy oil, naphtha, ligroin, propane, butane, propylene, ethane, methane, natural gas or a mixture thereof. Specified microorganisms are Corynebacterium oleophilus and hydrocarboclastus; Brevibacterium fulrum, acetylicum, albus and cerinus; Achromobacter pestifer; Pseudomonas ovalis; Escherichia coli; Mycobacterium brevicale; Candida lipolytica and tropicalis and Hansenula anomala.
Patent GB-982299-A (GB)
Title: Improvements in and relating to friction clutches
IPC: F16D13/58
Filed: 1961-08-01
Abstract: 982,299. Friction clutches. FRANCAISE DU FERODO S.A. Aug. 1, 1961 [Aug. 2, 1960; April 1, 1961], No. 27908/61. Heading F2C. In a plate clutch engaged by a diaphragm spring 20 fulcrumed at 25 on the driving housing 13, a thrust ring 28 interposed between a throw-out ring 29 and the spring 20 is connected to the diaphragm spring 20 or to the housing 13 by tangential or radial flexible strips. As shown in Figs. 1 and 2 the ring 28 comprises a part 30 co-operating with the throw-out ring 29 and of low friction material, and a part 31 of harder material engaging the spring 20 which is radially slotted to form fingers 22. Part 31 may be punched to provide ventilation channels for cooling purposes. Tangential spring strips 33 are riveted at 25, 32 to the housing 13 and the ring 28 respectively. The strips may be riveted to the spring 20 instead of to the housing. In the embodiment of Fig. 12 the ring 28 is riveted to a spring plate 33a having radial arms 53 engaging, with or without play, rivets 25 on the housing.
Patent GB-899626-A (GB)
Title: Points for monorail railways
IPC: E01B25/12
Filed: 1958-09-01
Abstract: 899,626. Mono-rail switch tongues. ALWEGFORSCHUNG G.m.b.H. Sept. 1, 1958 [Aug. 30, 1957; Nov. 2, 1957], No. 27954/58. Addition to 827,969. Class 104 (2). A switch for a beam-shaped monorail track structure adapted to be straddled by a vehicle with the vehicle supporting wheels running on top of the beam and with vehicle side wheels bearing on tracks on the side faces of the beam, in which the switch structure is so constructed as to allow movement of constituent members thereof relatively to one another when the switch is moved from one operative position to another operative position, is characterized by an inner longitudinally-disposed box girder 1 and an outer box girder 2 and means such as ribs 3 preventing relative transverse movement of the material of the outer girder having a lower modulus of elasticity than that of the inner. Surfaces 8 and 9 supported by ribs 4 on the girder 2 form tracks for the wheels of the vehicle. The material of the surfaces has a lower modulus of elasticity than the material of the outer girder. The surfaces may be made of wood, rubber, synthetic resin such as hardened polyurethane, the inner girder may be made of sheet steel and aluminium for the outer girder. To allow for thermal expansion the girders are mounted for relative longitudinal movement.
Patent GB-1516722-A (GB)
Title: Microwave integrated circuits
IPC: H03B5/18
Filed: 1975-07-03
Abstract: 1516722 Radar LIGNES TELEGRAPHIQUES ET TELEPHONIQUES 3 July 1975 [26 July 1974] 28052/75 Heading H4D The Doppler radar described in Specification 1,465,925 is simplified by the removal of the capacitive diode 13 and the use instead of the capacitive diode effect of the collector-base junction of the transistor of the microwave oscillator 31. Optimum operating conditions are given. A practical strip-line embodiment is described, using an output line 32 having a stub 37 tuned to the multiple frequency nf o .
Patent GB-1517165-A (GB)
Title: Substituted-phenyl ketones containing a protected dipeptide residue
IPC: C07D233/54
Filed: 1975-05-21
Abstract: 1517165 Dipeptides ROCHE PRODUCTS Ltd 11 Aug 1975 [20 Aug 1974 21 May 1975] 28088/77 and 28087/77 Divided out of 1517164 Heading C3H [Also in Division C2] The invention comprises compounds of the formula wherein R is halogen, NO2 or CF3, R<1> is H or (C1-C6) alkyl, R<20> is an acyl group derived from a naturally occurring amino acid in which the amino group(s) present is (are) in protected form and any other functional group which may be present is in protected form where required (all such acyl groups which contain an asymmetric C atom having the L-configuration) and R<3> is phenyl, halophenyl or 2-pyridyl. They may be obtained by condensing (1) an amine of the formula with an appropriately protected amino acid or a reactive derivative thereof by various methods, e.g. by the mixed anhydride, azide, activated ester or acid chloride method; or (2) an amine of the formula wherein R<4> is H, CH3, cyclopropylmethyl, di- (C1-C4) alkylaminoethyl, methoxymethyl or hydroxyethyl, with an appropriately protected dipeptide or a reactive derivative thereof by similar methods to above.