baber/WOPTO huggingface dataset:
Patent GB-1185185-A (GB)
Title: Automatic frequency control
IPC: H03L7/14
Filed: 1967-06-02
Abstract: 1,185,185. Automatic frequency control systems. INTERNATIONAL STANDARD ELECTRIC CORP. 2 June, 1967 [3 June, 1966], No. 25610/67. Heading H3A. A frequency source f x  is synchronized to a second source f n  of equal frequency by feeding the signals to two mixers 1 and 7 through paths including a phase-shift network 6 to derive two beat frequency signals a and b in phase quadrature, one of the beat signals being processed in units 3-5 to derive short pulses at instants corresponding to zero-crossings of the signal, which pulses control a gate 9 through which the other signal passes to output means 10 producing an error signal U AFC  used to control the frequency of source f x . The output signal will be positive or negative according to the sense of the error and is stored to guard against interruption of the reference source f n . The store may comprise a servo potentiometer driven by a step-by-step motor, an electronic counter, an annular core memory, or a transfluxor (Fig. 9, not shown). The latter is particularly suitable when a varactor diode is used to control the frequency source f x  since their respective non- linearities may be matched to give an overall linear characteristic. In a modified arrangement, Fig. 5 (not shown) the gate 9 passes the output to one of two lines according to its sense. In a practical embodiment of this arrangement, Fig. 8 (not shown), two AND gates responsive to positive input signals are opened by the pulses from unit 5 and are supplied respectively with in-phase and anti-phase signals from the mixer 7. The frequency deviation may be increased before the mixing stages by multiplying the two signals by factors differing by unity and deriving a beat frequency.
Patent GB-1043844-A (GB)
Title: A self-lubricating bearing of thermoplastic material and process of making same
IPC: B29C44/42
Filed: 1963-06-27
Abstract: A self-lubricating bearing is composed of polypropylene or low-pressure polyethylene, which is impregnated with a lubricant. The plastics material of the bearing is porous, the pore-volume being between 4-40%.  The bearing is produced by admixing a blowing-agent to a plasticized polyolefin, moulding the mixture at gas-generating temperature, cooling the resulting product and impregnating the product with a lubricant.  Suitable blowing agents include azo dicarbonamide, trihydrazine triazine, and N,N1-dinitroso pentamethylene tetramine. An activating agent may be included in the mixture, e.g. urea, biuret, ethanolamine, borax, glycols and zinc lead and cadmium compounds. The bearing structure may be impregnated by immersion in liquid lubricant such as oil or in petroleum jelly and these may be heated.
Patent GB-246229-A (GB)
Title: Improvements in mechanism for producing yarns or threads of fibrous substances
IPC: D02G3/36
Filed: 1924-10-30
Abstract: 246,229. Stell, A., and Watson, D. Bulay-. Oct. 30, 1924. Special yarns, producing; rollers and roller heads. - In mechanism for the production of yarns or threads of fibrous substances which are of a comparatively resilient nature and cannot be bound by twisting alone, such as horse-hair threads, the horse-hair threads 2 are drawn from bobbins 3 by rollers 4, 4<a>, attenuated by means of belts 5 and rollers 9, 10, and bound with one or two threads c from a bobbin 13 bv means of a flyer 12. Reinforcing threads are introduced at the guide 22 or at the rollers 9, 10. The belt 5 travels in a trough 6 and co-operates with rollers 8, and its speed is greater than that of the rollers 4, 4<a> and less than that of the rollers 9, 10. The bobbin 13 and flyer 12 are mounted on a tube 11 through which the finished yarn passes to rollers 17, 17<a> and winding-mechanism.
Patent GB-687144-A (GB)
Title: Improvements in or relating to insecticidal fungicidal and acaricidal compositions
Inventor: BARKER HARRY JAMES
Filed: 1949-10-08
Abstract: Seed such as oats is treated with a insecticidal, acaricidal or fungicidal composition containing a halide of the formula RXCH2M, R being an aromatic nucleus, X being an oxygen or sulphur atom and M being a chlorine or bromine atom. Specification 647,215, [Group IV(b)], is referred to.ALSO:An insecticidal, acaricidal or fungicidal composition contains a halide of the formula RXCH2M, R being an aromatic nucleus, X being an oxygen or sulphur atom and M being a chlorine or bromine atom, and one or more compatible diluents. Compounds specifically referred to are 2,4-dichlorophenoxymethyl chloride and 4-chlorophenylthiomethyl chloride.  The diluents may be liquids such as water, preferably with a solvent or a solid carrier, wetting or emulsifying agents, stabilizers or other customary additives, or solid carriers such as kaolin, gypsum or chalk.  The compositions may also be in the form of aerosol or smoke generators, for example a strip of porous material may be impregnated with the compound or a solution or dispersion thereof. According to one example, a self-emulsifying concentrate consists of 2 : 4-dichlorophenoxymethyl chloride, "Empilan" A (Registered Trade Mark), "Lubrol" M.A. (Registered Trade Mark) and Shell P.31 mineral oil.  Specification 647,215, [Group IV (b)], is referred to.
Patent GB-1179604-A (GB)
Title: Self-Extinguishing Thermoplastic Molding Compositions
IPC: C08J9/00
Filed: 1967-06-06
Abstract: 1,179,604. Self-extinguishing styrene polymer compositions. BADISCHE ANILIN- & SODAFABRIK A.G. 6 June, 1967 [23 June, 1966], No. 26020/67. Headings C3C and C3P. A thermoplastic moulding composition contains a styrene polymer, and as flame retardants an organic chlorine compound, an organic bromine compound and an iron complex of a nitrosonaphthol dye (C.I. No. 10,006). In examples: (1) polystyrene was compounded with pentane, hexabromocyclododecane, a chloroparaffin and the iron complex, the mixture was extruded into a sheet which was then expanded in steam; (2) as (1) using a silicate as nucleating agent and methyl chloride in place of pentane.
Patent GB-1472137-A (GB)
Title: Azo pigments and process for their preparation
IPC: C09D11/02
Filed: 1974-06-12
Abstract: Mono- or bis-azo compounds are obtained by diazotization of 6- or 7-aminobenzoxazine-2,4-dione and coupling to mono- or bis-N-acetoacetylaminoaromatic compounds and can be used as pigments.
Patent GB-518884-A (GB)
Title: Process of making negatives in metal of metal objects of substantially smooth surface
IPC: C23C4/18
Filed: 1938-09-06
Abstract: 518,884. Making moulds, dies, tools, type, type matrices &c. METALLIZING ENGINEERING CO., Inc., Sept. 6, 1938, No. 26061. Convention date, Sept. 7, 1937. [Classes 83 (ii) and 83 (iv)] [Also in Group XVI] Building up articles by spraying.-A metal negative of a metal object is made by spraying the object with a metal until it is covered with applied metal forming a coherent coating and thereafter removing the coating from the object. During spraying, or at any rate during the formation of the initial coating, the object must be at or above the temperature at which adhesion of the sprayed metal to the metal of the object begins and below the temperature at which the coating inseparably adheres to the object. These temperatures are found by experiment for the particular metals concerned. The coating may be separated from the object by means such as quenching or if the metal of the object has a lower melting point, the object may be subsequently melted out. The process is stated to be applicable to the making of moulds, dies, tools and metal type or a matrix therefor. The detached coating or negative may be given a backing of a different metal by spraying or pouring.
Patent GB-773032-A (GB)
Title: Positioning motor
IPC: H02K26/00
Filed: 1955-09-13
Abstract: 773,032. Electromagnets. FOXBORO CO. Sept. 13, 1955 [Sept. 16, 1954], No. 26239/55. Class 35. A polarized rotatable electromagnet consists of a vane 20 which is attracted to one or other of poles 40, 46 depending on the sense of the D.C. bias applied to coils 38 around cores 36, 42. The polarizing flux is provided by permanent magnets 28, 30 and passes from a common yoke plate 60, across an annular gap 52 to a hub 22 on the spindle 18, through the vane 20 to slotted pole shoes 40, 46 which embrace the vane, through cores 36, 42 carrying biasing coils 38 to the common yoke plate 48 at the other end of the magnets. The signal applied to the biasing coils serves to divert the flux, which is normally equally divided between the two poles, so that one is strengthened and the other weakened, and the vane is moved accordingly. The spindle 18 carries vanes 24 of a variable condenser 26 for use in a selfbalancing measuring system, the connection being made by flexible lead 54. The vane is earthed by a lead 60. Specification 646,981, [Group XXXVI], is referred to.
Patent GB-1510754-A (GB)
Title: Driving mirror assembly
IPC: B60R1/072
Filed: 1976-06-24
Abstract: 1510754 Rear-view mirrors MARKLIN & CIE GmbH Gebr 24 June 1976 26347/76 Heading B7J A remotely-controlled rear-view mirror assembly comprises a mirror glass 20 mounted on a carrier 1 in turn, universally mounted on a ball 4 secured on a base 2 and engaging a socket 7 secured to the carrier, the adjustment of the carrier 1 relative to the base 2 being effected by electric motor-driven spindles 10, 11 each having thereon a threaded portion 12, 13, respectively, connected via a respective two-part nut 18, 19 pivoted at 16, 17 in a cage 8 in turn pivoted on pivots 14, 15 in a respective tubular member 9 supported in the carrier 1. The ball 4 is surrounded by a tubular portion extending from the carrier 1. The carrier has two depending posts 5 on diametrically opposite sides of the ball 4 and base 2 has two diametically opposed upstanding posts 6. The pairs of posts 5, 6 engage in openings at the corners of a sheet metal spring cross piece 3 engaging the tubular portion of the carrier 1. If one spindle is rotated the carrier 1 will be pivoted on the ball 4 against the action of the spring 3.
Patent GB-772329-A (GB)
Title: Bis(dihalocyanovinyl) terephthalates
Inventor: BLAIR ETCYL HOWELL
Filed: 1955-09-14
Abstract: The invention comprises bis-(dihalocyanovinyl)terephthalates of the formula <FORM:0772329/IV(b)/1> in which X is halogen, and a process for making them by the removal of hydrogen halide from the corresponding trihalocyanoethyl-terephthalates with pyridine.  In examples, bis-(2 : 2 : 2-trichloro - 1 - cyanoethyl) - terephthalate and the corresponding tribromo compound are heated with pyridine to give the bis-dihalocyanovinyl terephthalates.  Specification 772,080 is referred to.
Patent GB-600864-A (GB)
Title: Improvements in or relating to sights for rifles, machine guns and the like
IPC: F41G1/027
Filed: 1945-10-09
Abstract: 600,864. Rifle sights. PILKINGTON, S. M. Oct. 9, 1945, No. 26363. [Class 119] A rifle sight comprises an aperture backsight 13 having a diameter greater than that of the pupil of the human eye, e.g. 7 millimeters, and an aperture foresight 14 having a greater diameter, e.g. 30 millimeters, such that it subtends the same angle as the backsight at the marksman's eye in the aiming position situated, e.g. 6 ins. from the backsight. Lenses may be inserted in either the backsight or in both sights. Specification 570,558 is referred to.
Patent GB-161124-A (GB)
Title: Improvements in swimming gloves
IPC: A63B31/04
Filed: 1920-09-14
Abstract: 161,124. Schreiner, M. Sept. 14, 1920. Swimming-appliances.-Swimming-gloves are provided with webs releasably secured between the fingers. The fingers 2 are formed with ribs 7 extending along the length of the finger on each side, the ribs being provided with a cylindrical groove 8 having a slot 9 communicating with the outside surface. Each of the detachable webs 4 has side ribs 5 which slide into the cylindrical grooves 8 and to prevent the webs from slipping off the fingers, lugs 6 are provided which wedge into the ends of the grooves 8.
Patent GB-1497303-A (GB)
Title: Control of web tension
IPC: B65H23/06
Filed: 1975-06-20
Abstract: 1497303 Automatic control of tension HARRIS CORP 20 June 1975 [1 July 19741 26382/75 Heading G3R Tension in a web (paper) between a machine (printing press) and a supply reel is controlled principally by adjusting torque at the reel in response to reel radius, but this signal is modified by combining it with a signal corresponding to the product of the reel radius and the position of a dancer roller between the reel and the machine. The dancer roller 28 applies a constant force by adjustable pressure in an air cylinder 30 and its position is measured by a strain gauge 56 in a bridge circuit, coupled to the dancer by a non- linear cam 60; this produces a greater effect as the dancer nears its end stops. The reel radius is digitally calculated by counting pulses corresponding to reel and machine speeds, and is converted to an analogue voltage VR at 74. A percentage of this, according to air cylinder pressure and hence dancer force, is taken from a potentiometer 54 and combined with the signal from the strain gauge bridge, the bridge being supplied with voltage VR. The combined signal is amplified at 50 and. as shown, controls a servovalve 40 for a pneumatic reel brake 22. If the machine is to be stopped an alternative control signal is switched in by a relay 48. As shown, this is proportional to VR (reel radius) but in Fig. 4 (not shown) it is the product SVR<SP>3</SP>, where S is the machine speed. In Fig. 3 (not shown) the brake is controlled by separate motor driven pressure regulators for running and stopping, and it is mentioned that the brake may alternatively be electrically actuated or be dynamo electric.
Patent GB-1360118-A (GB)
Title: Adjustable suspension device
IPC: A47B95/00
Filed: 1972-06-07
Abstract: 1360118 Hanging cupboards on walls R  HEINZE [trading as RICHARD HEINZE] 7 June 1972 26427/72 Heading A4U A cupboard, having a bracket 6 in an upper, inner corner, is mounted on a wall 4 by a hanger member 10 which is engageable with a hook 17, or with a profiled cleat 18, projecting from the wall 4 in a space 5 created between the back wall 1 of the cupboard and the wall 4 by the overhang of a cover plate 3. The broadened end 14 of the member 10 is down-turned and has an eye 16 and an open-ended slot 15 equal in width to the eye and separated therefrom by a web 14a, which is engaged by the hook 17, legs 19 at the sides of the slot 15 being engageable from above behind the cleat 18. A threaded bolt 9 rotatably mounted in upper and lower members 7, 8 of the bracket 6 is in engagement with threads 12 of a U-nut 11 embracing the member 10 so that rotation of the bolt raises or lowers the cupboard relatively to the member 10. The bolt 9 passes through an elongate slot 13 in the member 10 to guide the member for horizontal adjustment by a grub screw 22 rotatable in an offset part 23 of the nut and in engagement with a thread 21 in the down-turned end 20 of the member 10.
Patent GB-1033408-A (GB)
Title: Improved engine and transmission unit
Inventor: HANZI CARL WESLEY
IPC: B60K5/00
Filed: 1963-07-03
Abstract: 1,033,408. Motor vehicle driving gear. BORG - WARNER Ltd. Aug. 13, 1964 [July 3, 1963], No. 26439/63. Heading B7H. A vehicle engine/driving unit comprises a engine D on axis A driving through a torque converter E and chain 29 an automatic transmission F on axis B drivingly connected to differential G on axis C which is parallel to axes A and B. The unit is preferably arranged ahead of the front wheels in a vehicle. The three-speed and reverse transmission F is described fully in Specification 973,493.
Patent GB-1294351-A (GB)
Title: Improvements relating to colour printing apparatus
Inventor: DOBOUNEY MOUAYED EDOUARD
IPC: H04N1/54
Filed: 1969-05-23
Abstract: 1294351 Colour printing CROSFIELD ELECTRONICS Ltd 15 May 1970 [23 May 1969] 26508/69 Heading H4F A colour component for an ink colour, e.g. brown, that is not complementary to red, blue or green (i.e. is not cyan, magenta or yellow) is prepared by scanning the original through red, green and blue filters, modifiying the resulting colour separation signals and combining the resulting modified colour separation signals in predetermined adjustable proportions set by gain-control circuits, the resulting signal being that which would have been obtained by scanning the original through a filter of a colour complementary to that of the required colour printer. Specifically the cyan, magenta and yellow signals are matrixed to provide outputs representing the cyan, blue, magenta, red, yellow and green components of the original, i.e. representative of more restricted colour ranges of the original, these are then modified in respective control circuits for cyan, magenta and yellow each comprising six potentiometers, and recombined with the cyan, magenta and yellow signals, the resulting corrected cyan, magenta and yellow signals being fed via the gain-control circuits to a mixer A smallestsignal selector having inputs connected to the uncorrected yellow, magenta and cyan lines may provide an undercolour signal for a black printer. This invention avoids the necessity of employing a "split-filter" technique for printing brown, i.e. it is not necessary to effect a 15- second exposure through a red filter followed by a 5-second exposure through a green filter to produce a colour separation transparency for the brown printer.
Patent GB-1358775-A (GB)
Title: Silencer
IPC: H01H33/58
Filed: 1972-06-07
Abstract: 1358775 Exhaust silencers BBC BROWN BOVERI & CO Ltd 7 June 1972 [9 June 1971]  26526/72 Heading F1B [Also in Division H1] A silencer, for use with a gas-blast circuit breaker, comprises a cylindrical elastic rubber diaphragm 5, having a large number of small pores which open substantially only if the diaphragm is expanded, secured between end plates 6 and 7 to define a chamber into which compressed gas is vented from the circuit breaker exhaust valve 4. A wire cage or grid structure 8 prevents the diaphragm from being over expanded. (For Figure see next page)
Patent GB-738296-A (GB)
Title: Improvements relating to rotary pumps
IPC: F04C2/10
Filed: 1952-10-22
Abstract: 738,296. Rotary pumps. ORR, H. C. H. Jan. 21, 1954 [Oct. 22, 1952], No. 26539/52. Class 110 (2). The pump comprises inner and outer rotors 15, 14 rotating about axes 35, 36 respectively. For clockwise rotation of the rotors, the chambers formed by the coacting teeth and recesses increase in volume on the right-hand side of the axes, the teeth not being in contact. During the discharge phase (left-hand side), the teeth contact one another (see Fig. 5). The sealing surfaces are generally semi-cylindrical and the radius of one surface, which is concave, exceeds that of the co-operating surface, which is convex, by an amount equal to the eccentricity of the rotors. One of the convex edges may be sharp to form a sealing line. The rotors, having the same number of teeth, are contained within a cavity 11 in a casing 10, which also encloses a stationary valve plate 12 located by dowels 13. A shaft 16 drives the inner rotor 15 from an electric motor to which a bridge-piece 19 is secured. The shaft may have bearings within the casing. The concave surfaces 32 of the outer rotor can be formed by drilling a number of holes axially, boring and turning. One or both rotors may be formed of laminated plastic material such as fabric-reinforced synthetic resin. One or more channels 39 may be provided in the periphery of the inner rotor to prevent trapping of liquid. Inlet and outlet passages 41, 42 lead to ports 43, 44 in the casing. In an alternative construction, the casing may have ports to communicate with ports in the periphery of the outer rotor instead of, or in addition to, ports at the end.
Patent GB-1469442-A (GB)
Title: Process for sulphonation of petroleum fractions
IPC: C07C301/00
Filed: 1974-06-14
Abstract: 1469442 Sulphonation of petroleum fractions MARATHON OIL CO 14 June 1974 [12 July 1973] 26573/74 Heading C2C Petroleum sulphonates are obtained by a continuous process involving the treatment of petroleum fractions with SO 3  in ethylene dichloride, the process comprising: (a) contacting a first stream comprising said petroleum fraction and a recycle product with a second stream comprising said SO 3  which has previously been mixed with ethylene dichloride, said contacting occurring in a reactor zone in which said streams are impinged at a substantial angle, (b) maintaining the velocity of said first stream at at least four times the velocity of said second stream, both said streams being in turbulent flow, (c) recycling as said recycle product, a portion of the products of said reaction from said reactor zone to a point where they are admixed with said petroleum fraction and thence back to said reactor zone. The volumetric rate of flow of said recycle product stream can be controlled to obtain a velocity ratio within said range. Preferred petroleum fractions have M.W.s from about 250 to about 700, an aliphatic to aromatic proton ratio from about 5 to about 50 and an aromatic content from about 30 to 100%. An apparatus for carrying out the process is described. An example is given in which a heavy gas oil is sulphonated.
Patent GB-170002-A (GB)
Title: Method of and apparatus for measuring the elastic properties of plastic materials, such as rubber, farinaceous pastes and the like.
Inventor: CHOPIN MARCEL
IPC: G01N11/00
Filed: 1921-10-07
Abstract: 170,002. Soc. d'Entreprise MeuniÞre, and Chopin, M. Oct. 7, 1920, [Convention date]. Testing flour and meal. - A method of and apparatus for measuring the elastic properties of plastic materials such as rubber, farinaceous pastes, &c. and more particularly of alimentary substances containing gluten consists in preparing a layer of predetermined thickness of said material and subjecting it to a continuous distension until rupture occurs and measuring the stress required to produce the distension. The apparatus, Fig. 1, comprises a base 1 supporting a circular plate 2 and a column 3 on which slides a shoe 4 provided with a plate 5. The raising and lowering of the plate 5 is effected by means of a screwed spindle 7 and the downward movement is limited by means of a stop 34 on the plate 2. The plate 2 is provided with a conical opening 9 adapted to be closed by a valve 10 on a spindle 11 the longitudinal movement of which is effected bv an eccentric disc 12 operated by a handwheel 13. The plate 5 has a larger opening 18 normally closed by a stopper 19 held in position by three turn-screws 20. The measuring apparatus, Fig. 3, comprises a tube 24, gauge chambers 25, 26, 28, reservoirs 27, 29, and cocks 30, 33. The tube 24 is connected to a tube 17, Fig. 1, communicating with a chamber 14 formed in the base 1 and through which the stem of the valve 10 passes, the chamber being made air or gas tight by means of a stuffing-box 15 and joint 16. The apparatus' is maintained at a constant temperature during the test by means of an electric heating resistance 21 controlled by a regulator 22 and a cooling coil 23 is provided to ensure the final cooling of the apparatus. In making a test on flour dough a sample or layer is placed on the table 2, the stopper 19 is removed and the valve 10 is lowered; a constant volume of gaseous fluid is introduced beneath the test-piece by opening the cocks 31, 33 and the pressure is registered by the gauge 25 and gives a measurement of the tenacity of the dough. The cock 33 is then closed and the cocks 30, 32 opened, whereupon the test-piece is progressively distended by the admission of water to the receiver 26 until rupture occurs when the valve 30 is immediately closed. The volumes of water admitted to the receivers 26, 28 forms a measure of the volume of gas used and from this the superficial area of the test piece can be deduced, the square-root of which measurements affords a ratio between the initial volume of the dough and the volume of the bread obtainable therefrom.