baber/WOPTO huggingface dataset:
Patent GB-1519584-A (GB)
Title: A fuel economiser device
IPC: F02M23/09
Filed: 1975-07-11
Abstract: 1519584 Air admission valve J McFARLANE and A GUY 11 July 1975 [25 July 1974] 32962/74 Heading F1B An air admission valve, operable when the induction pressure lies in the range 18 to less than 22 inches of mercury may be secured by the threaded portion 22 in a manifold wall or any other part communicating with the induction passage downstream of the throttle valve. The operational pressure is adjusted by screwing the body part 6 in or out relative to part 4. The valve may be a plate, piston &c. and the opening operating range is preferable 20 to 21 inches of mercury.
Patent GB-604851-A (GB)
Title: Improvements in or relating to plastic compositions
IPC: C08F214/08
Filed: 1945-12-06
Abstract: Polymers of vinylidene chloride or copolymers thereof with, for example, vinyl compounds are mixed with dimers or trimers of styrene, or alkyl or halogen derivatives of styrene.  Vinyl compounds specified are vinyl chloride, vinyl ethers, esters, and ketones, methyl and isobutyl acrylate, acrylonitrile and methacrylic esters. Styrene derivatives specified are o-, m-, and p-vinyl toluenes, vinyl xylenes, o-, p-and m-chlorostyrenes and alpha methyl styrene.  The mixing may take place on heated rolls, or by adding a solution of the dimer or trimer in the cold to the resin and evaporating the solvent or adding the dimer or trimer to the monomers before polymerization. In an example p-methyl styrene dimer was emulsified in water with the sodium salt of sulphated lauryl alcohol, polyvinyl alcohol, potassium persulphate, sodium hydrogen phosphate, citric acid, vinylidene chloride, isobutyl acrylate and crotonyl peroxide and heated to give a plasticized copolymer.  The composition may be moulded at 185-190 DEG  C. for one or two minutes.  The dimers and trimers may be prepared by heating alpha methyl styrene in the presence of active clay, heating cinnamic acid with sulphuric acid to give a styrene dimer, heating styrene or p-methyl styrene in the presence of p-toluenesulphonic acid and pyrogallol in chlorbenzene, or using ethylene glycol and sulphuric acid in place of p-toluenesulphonic acid, or by heating o- and p-chlor styrene in ethyl benzene with active clay.  Specification 524,156 is referred to.ALSO:Polymers of vinylidine chloride or copolymer thereof with, for example, vinyl compounds, are mixed with dimers or trimers of styrene, or alkyl or halogen derivatives of styrene.  The dimers or trimers may be prepared by heating alpha methyl styrene in the presence of active clay, heating cinnamic acid with sulphuric acid to give a styrene dimer, heating styrene or p-methyl styrene in the presence of p-toluenesulphonic acid and pyrogallol in chlorobenzene or using ethylene glycol and sulphuric acid in place of p-toluenesulphonic acid, or by heating o- and p-chlorstyrene in ethyl benzene with active clay.  Specification 524,156 is referred to.
Patent GB-1522375-A (GB)
Title: Method and apparatus for displaying alphanumeric data
IPC: G09G5/28
Filed: 1975-08-07
Abstract: 1522375 Cathode-ray tube displays TEXAS INSTRUMENTS Ltd 7 Aug 1975 33014/75 Heading H4T The invention is concerned with improving the legibility of characters etc. displayed in rectangular dot-matrix form on a raster scanned cathode ray tube. The display may be controlled by inserting digital data for each line of characters into an otherwise blank line preceding conventional television picture information transmission so that by storing the data received over a plurality of field periods a complete "page" of information may be made available for display. The improvement in legibility consists of "rounding" the characters by detecting the occurrence of a "diagonal" relationship between character dot elements in adjacent line scans and where such occurs, of increasing the width of the dot, either at the leading or trailing edges, by an amount less than the width of a dot, so as to increase the overlap between dots in adjacent lines to at least the width of a dot. Fig. 1 shows the letter K as it would appear without the improvement provided by the present invention, the letter being produced as a 5 Î 7 dot matrix pattern within a 7 Î 9 matrix space (to provide character and row spacing), under the control of digital signals from a read only memory (ROM) the even (E) and odd (O) lines of each raster pair (R) being identically modulated. The modulation may be such as to produce a dark character on a bright back ground or vice-versa. In operation, circuitry (Fig. 5 not shown) "examines" the bits for successive lines to detect a diagonal relationship, i.e. an overlap between the elements of such lines as shown by the diagonal 2 in Figs. 3A and 3B and when such relationship is detected the circuitry operates to increase either the leading edge or the trailing edge of one of the dots but not both. Thus the dot in line Rn, E (Fig. 3A) which is in diagonal relationship with a dotin line Rn-1,0, is increased in width by one half dot width as shown at 3 in Fig. 3c whereas the dot in line Rn, O (Fig. 3B) in diagonal relationship with the dot in line Rn + 1, E, is increased as shown at 4 in Fig. 3D. Applying these rules to the letter K of Fig. 1, the improved letter then has the form shown in Fig. 2. In the case of a diagonal line produced by dots shown with hatching direction 5 (Fig. 4) the appearance is improved by the addition of the extra half-dot width elements shown with hatching direction 6.
Patent GB-756015-A (GB)
Title: Improvements in gas turbine power plants
IPC: F02C3/113
Filed: 1952-03-11
Abstract: 756,015. Gas turbine plant. TURBEX CORPORATION. March 11, 1952 [April 18. 1951]. No. 33025/54. Divided out of 755,925. Drawings to Specification. Class 110(3) A gas turbine plant comprising a compressor supplying air to a combustion chamber feeding a turbine the shaft of which drives the compressor shaft and a power output shaft through a differential gear has clutch means for connecting two of the three shafts which is automatically engaged by the relative speeds of the two shafts. The subject-matter of this Specification is identical with that described with reference to Figs. 1, la and 2, Specification 755,925, but the claims differ. Specification 595,357 also is referred to.
Patent GB-276548-A (GB)
Title: Improved manufacture of highest-pressure steam boilers
IPC: B21D51/24
Filed: 1926-12-31
Abstract: 276,548. Grossweischede, J., and Reichenbecher, G. Dec. 31, 1926. Steam generators. - Drums for high-pressure steam boilers, having integral thickened ends, are made by cupping a blank a which has been rolled or forged to give it a dense structure, the cupping being effected in stages by pairs of dies b, c of successively decreasing diameter, while the work is hot. The drawing die or mandrel used in the first stages may be collapsable comprising a pair of segments e slidable longitudinally on a tapered core d, slots f and projections g being provided to limit the relative movement of the segments and core. The work may be arrested before passing completely through the die in the later stages, in order to leave a flange which may be secured to another drum section, by welding, riveting &c., or may serve as a seat for a manhole &c. cover. The drums may be secured to an intermediate cylindrical section, having an inturned flange for a manhole cover. Specification 170,580, [Class 123 (i), Liquid-level regulating &c.], is referred to.
Patent GB-628136-A (GB)
Title: Improvements in variable tone control and other variable shaping circuit arrangements for thermionic valve circuits
IPC: H03G5/08
Filed: 1946-11-07
Abstract: 628,136. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and ROOYEN, L. J. VAN. Nov. 7, 1946, No. 33165. [Class 40 (vi)] A tone control or other shaping circuit comprises a series network of two outer impedances with a signal-controlled valve connected between them, a potentiometer being connected across part of the network including the. valve with its adjustable tap connected via one or more reactive circuits to a point on one of the outer impedances, the output being taken from points on the network on opposite sides of the valve which are asymmetrically disposed with respect to the mid-point of the network. The figure shows a tone control circuit having outer impedances R3, R4 and the potentiometers R5, R5<1> having values large compared with the internal impedance of the valve. At the midpoint setting of the potentiometers, assuming resistors R3 and R4 to be of equal value, the capacitor C and inductor L have no effect upon the frequency response law of the circuit. As the tapping of potentiometer R5 moves downwards the gain of the stage is increased and as it moves upwards the gain is reduced at the higher frequencies. The potentiometer R5<1> enables the response at the lower frequencies to be controlled in a similar manner. The variable tap of the potentiometer may be connected to earth by a switch via any one of a variety of networks, Fig. 1 (not shown). The resistors R3, R4 should preferably be non- reactive and the tone control potentiometer may be ganged with a gain control so that the effect on the human ear of a flat frequency response over the audio-frequency range may be simulated over a wide range of levels.
Patent GB-780399-A (GB)
Title: A reinforcing device for the mouths of clothes' pockets and the like of plastic material or cloth
IPC: A41D27/20
Filed: 1955-11-21
Abstract: 780,399. Finishing edges of non-metallic sheet material. ERU, A., and SPROVIERO, J. O. Nov. 21, 1955, No. 33201/55. Class 42 (1). [Also in Groups VII and XVII] A garment pocket, bag, sack, satchel, &c. has its mouth portion reinforced by attaching along the inner edge a strip 6 of plastic material with a narrow textile tape 7 secured to one side of it, the reinforcing strip being so applied that the textile tape lies between the plastic strip 6 and the pocket material 1. Heavy pressure is applied to the strip 6 to secure it to the pocket material and to imbed the textile tape in the plastic strip, the ends 8, 81 of the strip being united at an intermediate point between the corners 4, 41.
Patent GB-650259-A (GB)
Title: Food refrigerating apparatus
IPC: F25D13/06
Filed: 1948-12-24
Abstract: 650,259. Step-by-step conveyers. EFTIHIOS, K. Dec. 24, 1948, No. 33304. [Class 78 (i)] [Also in Group XIII] Food receptacles 32 are moved through brine or other refrigerant in a tank 12 by a reciprocating carriage 20 travelling on rails 19 above the tank, and having depending receptacleengaging means 29, 30, 31 which are moved to an inoperative position to pass over the containers 32 in the tank during the return movement of the carriage. The end walls 54, 55 of the tank are perforated and communicate with supply and discharge headers 13, 14 for the brine which is circulated by a pump 17. The end wall 55 is inclined upwardly and discharges the frozen receptacles on to a platform 56. A shaft 34 turned by a crank carries sprockets 27 for two driving chains 24, one at each side of the tank, passing over sprockets 25 at the other end of the tank and secured at their ends to the carriage at 22, 61. The chains pass over idler pulleys 23 on the carriage to prevent sag. In use, the carriage is moved rearwardly towards the end 54 of the tank, the pivoted U-shaped bar 29 turned to the operative position shown, and a row of receptacles 32 placed in the brine. The carriage is then moved forwardly to its extreme forward position, the bar 29 dragging the row of receptacles part-way through the tank. The carriage is then returned to the starting position, the pivoted receptacle-engaging brackets 30, 31 being in the raised position shown dotted, and another row of receptacles is lowered into the brine. The brackets 30, 31 are then lowered, and on forward movement of the carriage engage the previous rows of receptacles to move them further along. By repeating these operations a continuous series of receptacles are propelled through the refrigerant and forced up the slope 55. The bar 29 can also be raised to an inoperative position during the return movement, so that a fresh row of receptacles 32 can be inserted while the previous rows are being moved forwardly. The carriage may be driven by a motor. '
Patent GB-300563-A (GB)
Title: Process for dehydrating vapour mixtures containing acetic anhydride and water
IPC: C07C51/573
Filed: 1928-11-14
Abstract: 300,563. I. G. Farbenindustrie Akt.- Ges. Nov. 14, 1927, [Convention date]. [The subject-matter was laid open to inspection under Sect. 91 of the Acts, Feb. 12, 1928]. Addition to 285,090. Acetic anhydride.-In the process of the parent Specification for condensing acetic anbydride from a mixture of its vapour with water vapour by treatment with organic solvents in a column, a dephlegmation is placed at the top of the column, and the organic solvent, such as benzene, toluene, or benzene and trichlorethylene is admitted only at the bottom of the column.
Patent GB-812156-A (GB)
Title: Improvements in or relating to locks
Inventor: WARD JOHN WILFRED
IPC: E05B63/24
Filed: 1955-11-23
Abstract: 812,156. Door latches. PRESSED STEEL CO. Ltd. Nov. 21, 1956 [Nov. 23, 1955], No. 33546/55. Class 44. In a door latch mechanism the latch bolt is coupled by linkage means to an actuating push plate member constrained to move in a plane in or parallel to the plane of the door by means of guides on or secured to an escutcheon plate secured to the door, the push plate being moved to rotate the latch bolt to disengage it from the striker plate. The latch bolt 17 with head 18 is rotatably mounted on a plate 14 and is secured to an actuating lever 19, the plate 14 being secured to the door frame by lugs 15 and strengthened by ribs 16. A link 20 is pivoted to lever 19 at one end and carries a collar 21 clamped to a push rod 22 at the other end, the rod 22 being secured to a push plate 23 incorporating a barrel lock 24, and a part 25 which slides in guides 26 in the escutcheon plate 27, a finger plate 29 being secured to push plate 23 with the barrel lock 24 projecting through an aperture 30. Depression of the finger plate 29 and push plate 23 against the action of a spring 32 to rotate the lever 19 rotates the bolt 17 to enable it to be withdrawn from engagement with a pair of spring pressed members 12 and 13 of the striker plate 11; in closing the door the latch functions as a slam latch.
Patent GB-726419-A (GB)
Title: Improvements in an electric motor
Inventor: MASON JAMES ALMON
IPC: H02K7/112
Filed: 1953-12-03
Abstract: 726,419. Motor driving arrangements. WARNER ELECTRIC BRAKE & CLUTCH CO. Dec. 3, 1953, No. 33622/53. Class 35. [Also in Groups XXIV and XXXIV] A motor has electromagnetic clutch and brake devices each of which comprises two magnetic rings which are located between the rotor and the motor end bell, there being two annular windings, one for each device, so that when one of such windings is energized the rings of the corresponding device axially grip each other. Fig. 3 shows a section of one end of a squirrel cage motor having an end bell 14 within which a clutch 21 and a brake 22 are located. The clutch 21 comprises a driving disc 23 secured to the rotor 5 which is loosely journalled on a shaft 9 and a driven disc 25 which is loosely splined in a fluted portion 32 of the shaft 9. The brake 22 comprises a non- rotatable member 24 fixed to a hub 44 on the end bell 14 and a rotary disc 26 loosely splined on the shaft fluted portion 32. There are two concentric windings 34, 35 for the clutch and brake devices respectively and, when these windings are selectively energized, the respective discs grip each other. Both windings 34, 45 produce magnetic flux which flows toroidally along the various paths formed by corresponding magnetic circuits. One such path for the flux produced by the winding 45 is indicated at 61 while that for the winding 34 is indicated at 60, Fig. 4. It will be observed that the directions of the flux in the common part 39 are opposite and this is desirable so that any residual magnetism persisting after one of the windings is de-energized is quickly neutralized when the other winding is energized. If the motor is subjected to frequent starting or sudden load conditions, it is desirable to fasten the driven clutch disc 25 rigidly to the shaft 9 as in Fig. 4, while the driving clutch disc 23, together with the rotor 5, is so mounted as to be free to move axially on the shaft 9. For this purpose, the rotor 5 is disposed slightly offcentre to the left relative to the stator 6 and when the latter is energized the rotor tends to centre itself in the stator.
Patent GB-1464482-A (GB)
Title: Production of montmorillonite of uniform particle size
IPC: C01B33/26
Filed: 1975-08-12
Abstract: 1464482 Montmorillonite DRESSER INDUSTRIES Inc 12 Aug 1975 [28 Aug 1974] 33638/75 Heading C1A Raw montmorillonite is processed by (a) simultaneously drying and comminuting montmorillonite having a moisture content of at least 20% to produce discrete particles of which at least 50% by wt. are of - 200 mesh particle size and (b) air classifying the particles to obtain a product with a Fisher Average Diameter of 6-30 Á. The particle size of the product is preferably 5-40 Á and 70-80% by weight of the product of (a) is preferably - 200 mesh. Step (a) is preferably performed by subjecting the moist raw feed material to rapid drying by direct contact with hot high velocity moisture absorptive gases, while simultaneously comminuting. The resulting montmorillonite is of relatively uniform particle size, with good deaeration properties.
Patent GB-420258-A (GB)
Title: Improved means for automatically controlling the gas supply to gas heated water heaters
IPC: F24H9/20
Filed: 1933-12-02
Abstract: 420,258. Fluid - actuated valves. RADIATION, Ltd., Thimble Mill Lane, Aston, Birmingham, and YATES, H. J., 15, Grosvenor Place, London. Dec. 2, 1933, No. 33948. [Class 135] A gas valve e, controlling the supply of gas to the burner b of a water heater, is connected to two diaphragms k, j exposed to pressures in a full bore part of the cold water pipe m and at the throat of a Venturi v. The valve is loaded by an adjustable spring i. Loose flaps or discs x serve as non-return valves to minimize the risk of water hammer action on the diaphragms j, k. The valve e is provided with slots e<1> to cause the flow of gas to be proportional to the valve lift, and a conical face on the valve engages a seat when the valve is closed. The Provisional Specification states that the diaphragms may be replaced by corrugated metal or other flexible bellows.
Patent GB-1237360-A (GB)
Title: Method and apparatus for preparing staple length filaments of a foamed synthetic polymer
IPC: D01D5/26
Filed: 1969-07-04
Abstract: 1,237,360. Producing staple fibres of foamed synthetic polymers. E. I. DU PONT DE NEMOURS & CO. 4 July, 1969 [22 July, 1968], No. 33957/69. Heading B5B. [Also in Division C3] Staple fibres of low-density foamed synthetic polymers are produced by continuously extruding a foamable composition through at least one orifice of a spinneret into a moving gaseous sheath to produce at least one continuous, foamed, solid, polymeric filament; continuously flowing the sheath about the filament or filaments generally along the extrusion direction, the velocity of the sheath being increased along the extrusion direction from a velocity less than the linear rate of filament travel in the region of the spinneret to a velocity exceeding the linear rate of filament travel at a position spaced from the spinneret, whereby the filament or plurality of filaments is directed centrally within the sheath and caused to travel parallel to the extrusion direction, the crosssectional area of the sheath at the said spaced position being at least ten times greater than the total cross-sectional area of the filament or plurality of the filaments; cutting the or each filament by impact with at least one blade caused to move in a circular path in a plane which intersects the extrusion path within about 0À5 inch beyond said spaced position, the linear blade velocity at the point of impact cutting being much greater than the rate of filament travel at the point of impact cutting and conveying the cut filament or plurality of filaments away from the blade along the extrusion direction within the continuing stram of gas constituting the sheath. The foamable composition may be a solution of the polymer in an organic liquid at a temperature above the normal boiling point of the liquid and the sheath may consist essentially of the vapour of the organic liquid. The vapour of the liquid may be continuously separated from the cut filaments and recirculated. The filaments may be comprised of polyethylene terephthalate. The liquid may be methylene chloride.
Patent GB-1466827-A (GB)
Title: Stable construction
IPC: A01K1/015
Filed: 1975-08-15
Abstract: 1466827 Housing animals BETONWARENINDUSTRIE MILDER BV 15 Aug 1975 [15 Aug 1974] 34005/75 Heading AIM An animal house has rows of stalls having floors 7 supported on walls 3a, 3b alternating with walk ways having floors 11 formed by slats supported on the walls manure pits 2a, 2b being provided beneath the stalls and walk ways and being interconnected at the ends of the rows. The rows of stalls may stop short of the ends of the building and passages be provided interconnecting the walk ways. The stall floors and their supporting walls may be integrally formed and be provided by prefabricated concrete tunnel sections.
Patent GB-1474174-A (GB)
Title: Embossing of keraminous fabrics
IPC: D06Q1/08
Filed: 1973-07-17
Abstract: 1474174 Embossing keratinous fabric IWS NOMINEE CO Ltd and SMITHSON & GLEDHILL Ltd 16 July 1974 [17 July 1973] 34006/73 Heading DIP A process for embossing keratinous fabric comprises adjusting the pH of the fabric to within the range 6.5 to 9.0 (where not already in this range), treating the fabric in the pH range with a solution of a setting agent, subjecting the treated fabric while still moist to the action of a heated embossing surface to impose the desired surface impression, and subsequently drying the material. The pH adjustment may be with aqueous alkali metal carbonate or bicarbonate if the textile is initially acidic, or with acetic acid if it is initially alkaline. The setting agent may be monoethanolamine sesquisulphite, or an alkali metal bisulphite. Embossing may be effected using a heated calendar, preferably at 200-230‹C. The tetxile is preferably a wool and/or mohair fabric and may contain up to 25% of non- keratinous material. As shown the fabric 10 passes into the nip between an engraved embossing roller 16 and a counter roller 14 around which is passed a felt blanket 20 circulating over a tension roller 22, pressure being applied to the embossing roller by a top pressure roller 18 of paper construction. Infra-red heaters 26 and 28 provide a drying action for the blanket 20 and emerging fabric respectively before the latter passes to a festoon dryer (not shown).
Patent GB-848380-A (GB)
Title: Improvements in or relating to tinting compositions for paints and like coating compositions
IPC: C09B67/20
Filed: 1958-10-24
Abstract: In a tinting composition as described in the parent Specification, the keto-alcohol solvent is replaced by either hexylene glycol or 3-methoxy-butanol.