baber/WOPTO huggingface dataset:
Patent GB-1240103-A (GB)
Title: Improvements in or relating to flash distillation processes
Inventor: HOWES ROBERT IRVIN
IPC: B01D3/06
Filed: 1967-07-19
Abstract: 1,240,103. Evaporators, multi-stage flash type. WEIR WESTGARTH Ltd. 21 Oct., 1968 [19 July 1967], No. 33262/67. Heading B1B. In a flash distillation process wherein a hot solution, e.g. brine, flows horizontally through a succession of flash stages in turn, each successive stage operating at a lower pressure than the stage preceding it, the depth of the stream of solution entering a lower pressure stage from a higher pressure stage is limited such that the contribution to the total pressure of the stream made by the depth of the solution is less than the interstage pressure difference. In the apparatus shown, slot 3 is designed so that the solution enters chamber II from chamber I as a horizontally flowing stream 5, with a free surface 6, having a depth less than the equivalent interstage pressure drop. Nucleation devices, e.g. wire mesh, may be provided in this region to promote flashing. At some distance from the entrance to the stage, a rising weir 7 is provided which increases the depth of the stream of solution, while reducing its velocity, to restore sufficient static head to drive the solution into chamber III at the desired rate.
Patent GB-172658-A (GB)
Title: Oil-break electric switch with resistance
IPC: H01H33/16
Filed: 1921-12-12
Abstract: 172,658. Maschinenfabrik Oerlikon. Dec. 10, 1920, [Convention date]. Oil switches. - In oilbreak switches with resistance, the resistance 1 is carried by a submerged bell-shaped member 2, acting as a gas-collector. The gases are conducted outwards through the tube 4 of the sealing box. Within the member 2 is arranged the step contact 3 and the main contact 5, the resistance 1 being connected directly between them. Several contacts 3 may be provided, these being connected with different resistance stages.
Patent GB-961719-A (GB)
Title: An automatically stoking and self-cleaning fire grate
IPC: F23H7/06
Filed: 1960-09-29
Abstract: 961,719. Furnace grates. M. YGOUF. Sept. 29, 1960 [Sept. 29, 1959; Sept. 16, 1960], No. 33468/60. Heading F4B. [Also in Division F2] In a stepped grate with alternate fixed and reciprocating steps, the moving steps GM are mounted on a carriage 1 carrying an air duct 14 slidably connected to the air supply fan. Hollow fire-bars B, have ends B 5 , Fig. 6, entering holes D 2  in air distributers D, Fig. 3, which are connected by sheet metal casing C to the sliding air duct 14 or a parallel fixed air duct 2. The upper end of each casing C is formed as a narrow slot so that an equal amount of air enters each section D 1  of the distributer and its corresponding fire-bar. The distributers for the fixed grates GF have raised ends with holes D 3  for fixed edging fire-bars at either side of the preceding moving grate. The moving grates GM are raised from the carriage 1 by blocks L, and the first moving grate GM 1  has notched fire-bars to form a ram 6 to feed coal from the hopper. The air supply to the grate is provided by a fan fed from a wind-box having a fixed shutter 10, Fig. 15, with an aperture 10, shaped to proportion the variation in the air supply caused by sliding a register 11, Fig. 14, with a circular aperture in front. The register 11 is mounted on a toothed rack 18 controlled by a hand wheel 13 and also carrying an end of travel switch 27, Fig. 13. The switch 27 co-operates with a contact 26 1  on a nut moving along a worm 21 driven by a reversible electric motor 23. Operation of the switch 27 reverses the motor 23, and contact 26 moves to operate a second switch 38 which stops the motor 23 and starts an electric motor driving the carriage 1 and the moving grates. A spur on the gearing between the motor and the carriage 1 stops the grate driving motor on completion of the reciprocating motion of the grates and restarts the worm drive motor 23. By adjusting the handwheel 13 the stationary period of the grates, and hence the rate of fuel feed is adjusted as well as the air supply. The shape of the opening in the shutter 10 is such that the appropriate air supply for any rate of fuel feed is obtained, and a shutter with an opening of different shape can be used when the fuel is changed.
Patent GB-1326371-A (GB)
Title: Fluid flow control apparatus
IPC: A61M5/00
Filed: 1970-07-10
Abstract: 1326371 Digital control of intravenous set IVAC CORP 10 July 1970 [14 April 1970] 33515/70 Heading G4H [Also in Division A5] In a blood or plasma drip feed apparatus a peristaltic pump driven by a stepping motor is controlled to maintain a predetermined drip rate. Drips are sensed by photo-electric sensor 11 which triggers a monostable vibrator 12 for each drop. An integrator 14 integrates these pulses negatively and also receives positive pulses at a desired drip rate from a manually set reference oscillator 16. The error signal generated by the integrator controls the output frequency of a variable frequency pulse oscillator 20 in a non-linear fashion (Fig. 4, not shown), with sensitivity increasing with increase of error signal. The variable frequency output controls, via a control voltage circuit 22, a stepping motor 23 controlling the peristaltic pump. Circuit 27 provides an alarm and shuts off the circuit in response to a number of conditions. Firstly the voltage discriminators 25 and 26 detect whether the error signal from integrator 14 is too high or too low. Secondly to detect that air is not being pumped into the patient a rotation sensor 33 coupled to the stepping motor 23 clocks a counter 34 which is reset by pulses generated by the drop sensor 11, the circuit 27 being operated upon counter 34 reaching a predetermined count. For similar reasons the integrator 29 integrates pulses from the variable pulse generator 20 but is reset by the pulses from clock sensor 11, the alarm circuit 27 being operated upon the integrator reaching a predetermined voltage set by discriminator 32. (For Figure see next page.)
Patent GB-1012742-A (GB)
Title: Improvements in or relating to cordage
IPC: D07B1/02
Filed: 1962-08-31
Abstract: 1,012,742. Braid. T. B. CLERK. Aug. 31, 1962, No. 33610/62. Heading D1K. A braided cord, rope or line capable of being spliced comprises a braided core 11 of nylon filaments or of filaments having similar characteristics to nylon and a braided cover 12 of polyester filaments, the cover 12 being of a tighter braid than the core 11. The filaments are selected such that the elongation of the core filaments is greater than that of the cover filaments and the core and cover have pick ratios respectively in the ranges 6 to 8 and 2. 7 to 5.
Patent GB-644297-A (GB)
Title: Improvements in or relating to coated paper liner facing material
IPC: D21H19/82
Filed: 1946-11-13
Abstract: Coating compositions for paper comprise polymers of vinyl or vinylidene halides or copolymers thereof with vinyl esters, acrylic acid and alkacrylic acids or esters thereof, or mixtures these resins, a plasticizer amounting to 10 to 25 per cent by weight of the resin and a petroleum hydrocarbon, e.g. petrolatum, in an amount of 1 to 5 per cent by weight of the combined weights of resin and plasticizer.  Optionally the compositions may include maleic anhydride-glycerol esters of rosin or maleic anhydride-vinyl halide-vinyl acetate copolymers.  Specified plasticizers are methyl phthalyl, ethyl glycollate, ethyl glycol monoethyl ether, diamyl phthalate and dibutoxy ethyl phthalate. The compositions may include pigments such as aluminium powder or flakes or titanium dioxide and also volatile solvents such as methyl isobutyl ketone, methyl ethyl ketone, or toluol or mixtures thereof.
Patent GB-1476688-A (GB)
Title: Cathode-ray tube
IPC: H01J29/32
Filed: 1974-07-31
Abstract: 1476688 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 31 July 1974 [3 Aug 1973] 33776/74 Heading H1D In a negative tolerance colour TV shadow mask three gun tube (Fig. 1, not shown) i.e. with triplets of phosphor strips B, R, G, narrower than their electron impact areas, on display screen 11 of glass face-plate 4, in order to allow free passage of ambient light 15 and thermal radiation from the mask the glass 4 is left uncoated between the stripes, which are backed by A1 film 13 connected at their ends to A1 film transverse bus strips for charge return. The A1 film is initially applied over the entire screen, covered by a PVA/ammonia bichromate resist: illumination of the end strips and, via the mark, of the three sets of phosphor stripes makes the resist insoluble, allowing that in the spaces 14 to be washed off in water, so that the Al may be etched off in acid NH 4 Cl/HgCl 2  solution. The end strips may alternatively be graphite. The resist may be PVA/FeCl 3 , becoming water soluble in the spaces on their illumination, allowing etching of the A1. In all cases organic material is finally burnt off.
Patent GB-378737-A (GB)
Title: Improvements in or relating to variable resistance units for use in connection with wireless receiving sets and like electrical apparatus
IPC: H01C10/32
Filed: 1931-12-05
Abstract: 378,737. Regulating switches. WATKINS, A. E., 244, Dollis Hill Lane, Cricklewood, London. Dec. 5, 1931, No. 33785. [Class 38 (v).] In a variable resistance unit comprising an arcuate resistance element 32 arranged in a cup or annular shaped casing in contact with a helix track 30 with which contact is made by a rotatable wiper arm 18, the helix track is pressed into contact with the resistance element by means of a gapped insulating ring 21 which is pressed outwardly by a wedge member 24. The helix track comprises a wire wound on an arcuate insulating strip, each turn of the helix being split. The gapped ring may be coned on the inner face to engage a corresponding cone on the wedge member 24 which is disc shaped and provided with three holes 19 by which it is screwed on to the cup member 13. An inwardly directed projection 20 is provided on the cup or annular shaped casing to secure the gapped ring and helix track from rotation and a corresponding notch on the wedge member is also adapted to engage this projection. Some of the end turns of the helix track are left uncut and the wires are brought out to terminals 15. The wiper spindle 17 passes through a boss 16 on the casing and a bore 27 in the wedge member and has secured thereon the wiper arm 18. The wedge member may be of conductive material.
Patent GB-1046744-A (GB)
Title: Improvements in and relating to knitting machine beds for looping elements
Inventor: HALKYARD HAROLD LEES
IPC: D04B15/14
Filed: 1964-08-19
Abstract: A knitting-machine bed for receiving members in contact with loops, e.g. needles, sinkers, transfer points and controlling part therefor or both, is of laminated form and comprises superimposed notched components secured together.  In a preferred embodiment a needle cylinder comprises a stock of notched rings bonded or bolted together.  Members may either slide in the grooves formed by the superimposed notches, or between blades inserted in these grooves.  A flat bed may be similarly formed of straight notched strips.
Patent GB-894796-A (GB)
Title: An x-ray goniometer for structural analysis, adapted for direct measurement of lattice spacings
IPC: G01N23/207
Filed: 1959-10-06
Abstract: 894,796. X-ray goniometers. KHOL, F. Oct. 6, 1959, No. 33807/59. Class 98(1). A mechanical framework used in conjunction with an X-ray spectrometer automatically converts the measured diffraction angle into a direct reading of the lattice spacing (# and d in the Bragg equation). Fig. 1 shows an ordinary spectrometer arrangement in which M is the specimen, D the detector moving round M at radius r, and F the origin of radiation. Line OFM is called the "base line" z. The arm on which D is mounted is connected at K by a sliding joint to a rotatable arm m pivoted at O. K moves on a circle of radius OS and centre S. A straight line p is drawn parallel to the base line z and distant from it some fixed multiple (q) of the half wave-length (#/2) of the X-radiation being used. Arm m crosses line p at point P. The distance OP represents the lattice spacing d (multiplied by the same multiple q). Fig. 2 (not shown) is a modified arrangement suitable for the Seemann type of spectrometer. Specification 824,994 is referred to.
Patent GB-1051835-A (GB)
Title: Heat treatment of refractory metals
Inventor: CHANG WINSTON H
IPC: C22F1/18
Filed: 1963-08-27
Abstract: A method of heat treating an alloy based on one of the refractory metals Mo, W, Cb, Ta, Cr and containing carbon in excess of 0.05 Wt %, comprises aging the previously annealed alloy, prior to the final processing, for a time and at a temperature such that fine metal carbides are precipitated in the micro structure of the alloy, and then reducing the alloy to a finished form. Aging of alloys containing more than 0.1% at C may be effected by holding the alloy at a suitable elevated temperature for a certain time as follows:- .Mo and W based alloys:.5-50 hrs. at 2400-2800 DEG F .Cb and Ta based alloys:.1-10 hrs. at 2000-2500 DEG F .Cr based alloys:.1-10 hrs. at 1800-2300 DEG F  Suitable temperatures given for prior annealing the alloys are:  .Mo and W based alloys:.3200-4000 DEG F .Ta based alloys:.3000-4000 DEG F .Cb based alloys:.3000-3500 DEG F .Cr based alloys:.2500-3000 DEG F  The process results in increased strength at high temperatures without loss of ductility at low temperatures.
Patent GB-423692-A (GB)
Title: Improvements in and relating to harvesting devices for hay, straw and like crops
IPC: A01F15/04
Filed: 1933-12-02
Abstract: 423,692. Loading and binding hay, straw, &c. CLAAS, A., and BRENNER, W. G., Harsewinkel, Westphalia, Germany. Dec. 2, 1933, No. 33954. [Class 6 (iii)] A machine for picking-up and binding hay, straw, and like crops is arranged to be coupled to a tractor that runs at the side of the machine. The hay or other crop is lifted by a loader 12 comprising endless chains carrying transverse rods 16 fitted with tines 17, the side frames of the loader being pivoted on a transverse shaft 13. The crop is delivered into a collecting hopper 3 from which it is fed to a binding press 4 by a pivoted rake 20 actuated from the gearing of the pressing piston 5. A power take-off shaft 29 extends from the tractor 27 and drives through bevel-gear 30, 31 a countershaft on the binder frame from which the drives for the piston 5 and the loader are taken. The piston 5 presses the material down the channel 4 where it is bound into bales and then pushed along a shoot 33 to a wagon 34 or on to the ground. In a modification, the reciprocating pressing piston 5 pushes the material upwards into the channel 4, the rake 20 being dispensed with.
Patent GB-452860-A (GB)
Title: An improved process for hydrogenating heavy oils to light oils and gaseous hydrocarbons and apparatus therefor
Filed: 1934-11-27
Abstract: <PICT:0452860/III/1> Heavy oils or coal/oil mixtures are hydrogenated to produce light oils and gaseous hydrocarbons by atomizing the oil &c. into a reaction chamber free from current-conducting interior packing, introducing hydrogen-containing substances in liquid or gaseous form with or without catalysts so that a free and thorough admixture with the oil mist takes place, and subjecting the resulting mixture in the chamber to the action of a high-frequency induction field formed, e.g. by passing an alternating current of frequency 100,000 and at a voltage of 10,000 through a coil situated around or within the reaction chamber.  The oils and the hydrogenating substances, e.g. steam, may be given a whirling motion and are preferably passed in opposite directions.  The solid material, e.g. coal, may be introduced in the form of dust into the oil mist.  The vapours obtained may be again subjected to another induction field. Catalysts specified comprise iodine, hydrogen iodide, nickel, iron, molybdenum, tungsten.  Oil is injected by a nozzle 4 in countercurrent with steam supplied by a nozzle 5 into a retort 1 having double walls 2 surrounded by a winding 3 of an electric conductor.  The vapours formed flow through an additional chamber 6 also surrounded by an induction coil and then pass through the pipe 10 and the annular passage formed by the double wall of the retort to condensers. Specifications 169,063, [Class 32], and 383,384 are referred to.  Reference has been directed by the Comptroller to Specification 321,910, [Class 32].
Patent GB-282431-A (GB)
Title: Improvements in or relating to devices for balancing rotating bodies
IPC: G01M1/12
Filed: 1927-12-16
Abstract: 282,431. International General Electric Co., (Assignees of Allgemeine Elektrici. tõs-Ges.). Dec. 18, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Testing balance of rotary apparatus. - For static balancing, sleeves c fixed to the axle ends of the body a are provided with knife-edges d or lugs which rest on horizontal bearing surfaces, the line of the knife-edges or line of contact of the lugs with the bearing surfaces coinciding with or lying slightly above the mathematical axis of rotation of the body a. Graduated rings f are also adjustably mounted on the axle ends. The sleeve c is provided with a pointer g moving over a scale mounted on the bearing block e. The sleeve has a zero mark which is first brought opposite the zero of the scale on the ring f, and the body adjusted on the knife edges so that the pointer g indicates zero. The body is now allowed to swing and the axis turned in the sleeves c until the centre of gravity falls in the perpendicular zero plane. The ring f is then used to turn the body 90‹ in the sleeve c from this position, and the mass to be added or secured is computed. A weight may be adjustably mounted on the pointer g, which is graduated, in order to compensate for the moment of inertia of the knife-edge or lug resting on the bearing.
Patent GB-967767-A (GB)
Title: A piston
IPC: F16J1/16
Filed: 1962-09-06
Abstract: 967,767. Pistons. CUMMINS ENGINE CO. Inc. Sept. 6, 1962 [Sept. 14, 1961], No. 34149/62. Heading F2T. In a piston 10 comprising a crown 12 and a skirt 13 having a gudgeon pin bore 18 therethrough, the outer surface of the skirt comprises a substantially cylindrical intermediate portion 31 axially positioned within the transverse projection of the bore 18 and lower and upper end portions 34 and 36 tapering inwardly from the intermediate portion. The taper angles A and B are greater than the greatest angle to which the piston may be tilted in relation to the cylinder wall 11 so that the side thrust is confined to the intermediate portion 31.
Patent GB-295174-A (GB)
Title: An instrument for gauging acceleration or deceleration
IPC: G01P15/03
Filed: 1927-12-17
Abstract: 295,174. Tapley, W. Dec. 17, 1927. Accelerometers and retardometers. - Under the action of acceleration or retardation a pivoted case containing liquid or a ball overturns to indicate the exceeding of the rate for which the case is set. In the form shown in the Figure, there are two such cases I, J pivoted at 0 within an outer casing K and they rest normally against stops M, N capable of adjustment. The overturning of a case is rendered visible by means of a sight aperture L. The cases may be re-set by means of a bar P operated by an external lever. The outer casing mao be adjustably mounted on a bracket R and a pendulum S connected with a pointer T enables the inclination of the casing to be correctly set.
Patent GB-1446516-A (GB)
Title: Polyester fibres with natural hand and process for their production
IPC: D01F8/14
Filed: 1974-08-02
Abstract: 1446516 Polyester composite filament RHONE - POULENC - TEXTILE 2 Aug 1974 [3 Aug 1973 10 June 1974] 34241/74 Heading B5B [Also in Division D1] Composite side by side fibres comprise polyethylene terephthalate as one component and partially cross-linked polybutylene terephthalate as the other. The fibres have a crimp contraction of less than 60% and at least 7 half waves/cm. The fibres are formed by extruding side by side a polyethylene terephthalate of intrinsic viscosity not greater than 0À60 and a partly cross-linked polybutylene terephthalate, subjecting the extruded filament to steam drawing at 80-100‹ C. and developing the crimp at 100-150‹ C. The fibres show a hand similar to that of wool and a good processability as stable fibres.
Patent GB-406837-A (GB)
Title: Improvements in windscreen wipers
IPC: B60S1/10
Filed: 1932-12-03
Abstract: 406,837. Vacuum engines; compressed-air engines. CHKLIAR, J., 17, Square Coghen, Uccle, Brussels. Dec. 3, 1932, No. 34276. Convention date, Dec. 3, 1931. [Classes 122 (ii) and 122 (iii).] A cylinder 13 adapted to slide with respect to a fluid distributer 12 fixed to the ends of hollow tubes 9<a>, 9<b> in alignment, carries two windscreen-wipers 23, 24 and is reciprocated by fluid pressure under the control of a quick release reversing mechanism acting upon a slide valve 31. The tube 9<a> is connected to a source of suction and the tube 9<b> is connected to the atmosphere. Alternatively the tube 9<b> may be connected to a source of compressed air while the tube 9<a> is connected to the atmosphere. The distributer carries a rod 39 projecting so as to be actuated by either end of the moving cylinder 13, the rod through the medium of a lever 40 reversing the portion of the slide valve 31. The reversal is effected quickly by means of a spring 42. The valve is adapted to bring a port 32 into communication either with a port 33 or with a port 34. The port 32 communicates with the tube 9<a>, the port 33 with a chamber 37 on one side of the distributer, and the port 34 with a chamber on the other side of the distributer. For starting and stopping the device, a valve 46, Fig. 4, is provided between the conduit 48 leading to the source of suction and the conduit 50 communicating with the tube 9<a>.
Patent GB-805941-A (GB)
Title: Improvements in or relating to apparatus for maintaining a controlled atmosphere in infant incubators, oxygen tents and the like
IPC: A61M16/12
Filed: 1955-12-01
Abstract: 805,941. Injectors. HIGGS, G. W. Nov. 15. 1956 [Dec. 1, 1955], No. 34428/55. Class 71. [Also in Group VI] Apparatus for supplying gas mixed with air to a chamber includes a nozzle which directs gas from a source under pressure into the throat of a venturi arranged in a passage through which air passes to the chamber and an orifice for admission of air into the venturi, the effective area of the orifice being controlled by a cover member having a spiral edge which on rotation of the cover member increases or decreases the exposed area of the orifice. Gas under pressure is supplied through a flexible tube received by an adaptor 19 which is screwed on to the head of a T-piece 11. A nozzle 18 integral with the adaptor 19 directs gas into a venturi tube 16 which is screwed into the other end of the T-piece head. Atmospheric air enters the venturi tube 16 through a bore in the stem of the T-piece 11. A disc 10 having an eccentric hole 12 registering with the bore of the T-piece 11 is secured to the T-piece 11. A second disc 21 is mounted for rotation on a pin 22 secured to the first disc 10 and carries a cover plate 23 with a spiral edge 24. The inner and outer ends respectively of the spiral edge 24 are at smaller and greater distances from the centre of the first disc 10 than the centre of the hole 12 so that, as the cover plate 23 is rotated with the second disc 21, it progressively covers or uncovers the hole 12. The degree of exposure of the hole 12 is indicated by markings on the rotatable disc 21 which register with a fixed mark 29 on the head 26 of the pin 22. In an alternative construction (not shown) atmospheric air enters a venturi tube, into which gas under pressure is projected by a nozzle, through an opening controlled by a rotatable sleeve having a helical slot. The venturi nozzle is disposed on the outlet side of a regulator mounted on a gas cylinder, pressure gauges on the inlet and outlet sides of the regulator being provided.