baber/WOPTO huggingface dataset:
Patent GB-1153137-A (GB)
Title: Cycloidal Propeller
Inventor: HILL ROGER BRIAN
IPC: B60V1/14
Filed: 1965-08-31
Abstract: 1,153,137. Cycloidal propellers. HOVERCRAFT DEVELOPMENT Ltd. 26 Aug., 1966 [31 Aug., 1965], No. 37121/65. Headings B7G and B7K. [Also in Division F2] A propeller for use in air or water comprises a series of parallel blades 10a to 10l, Fig. 3, rotatable about a common axis X, maintaining a fixed angle between the blade chord and its radius from X with means A, A<SP>1</SP> for varying the blade lift F, F<SP>1</SP> while rotating so as to produce a resultant flow R of fluid normal to the axis X. The lift varying means A, A<SP>1</SP> on each blade may be either at least one jet of fluid, Fig. 6, or at least one spinning cylinder 60a, 60b, Fig. 12; or rudders, or flaps or a belt moving round the surface of the blade 10. The blade 10, Fig. 6, for the fluid jet lift varying means comprises an inlet duet 13 and outlet ducts 17, 18, 25 near the tail of the blade, the fluid jet be directed into either duct 17 or 18 by a high-pressure cross jet supplied from duct 23 or 22 respectively. The control of the fluid supply to the ducts 13, 22, 23 may be as shown in Fig. 7 where the duct inlets 13a, 22a, 23a in the rotating disc 11 are fed from grooves 13b, 22b, 23b respectively in the stationary disc 50, whose position can be varied to change the resultant direction of propeller thrust F R , Fig. 3. The propeller 101 may be used on an air cushion vehicle 100, Fig. 15, where the mounting ring 11 for the blade 10 is fitted into a hollow 45 in a fairing 46, the outer ends of the blades being connected to a ring or disc 11a to assist in mechanical stability, reduce entanglement with tree branches, and reduce vortices at the blade ends. A motor 107 on the vehicle 100 drives a compressor 106 to supply air, drawn in at 105 to provide the air cushion.
Patent GB-952917-A (GB)
Title: Controlled flexure hydraulic pipe joints
IPC: F16L27/113
Filed: 1961-10-17
Abstract: 952,917. Pipe joints. H. DAVID. Sept. 28, 1962 [Oct. 17, 1961], No. 37128/61. Heading F2G. A pipe coupling comprises a split, bell-mouthed coupling member A surrounding the ends of a pair of flanged pipes, split coupling collets C disposed within the bell-mouthed ends of the coupling member, and a sealing ring B of rubber or a plastic having inturned sealing lips positioned around the flanges of the pipes and radial tongues T disposed between the flanges of the pipes. Fluid passes into the body of the sealing ring to exert hydraulic sealing pressure on the lips of the ring. The coupling may be in halves and bolted together at lugs L.
Patent GB-1412378-A (GB)
Title: Photographic cameras
IPC: G03B7/093
Filed: 1973-08-06
Abstract: 1412378 Shutter control circuits SEIKO KOKI KK 6 Aug 1973 [9 Aug 1972 17 Oct 1972] 37215/73 Addition to 1409479 Heading G2A Two modifications of the parent invention are claimed. In the parent, a unit 1 photo-electrically determines exposure time T and feeds a gating pulse of duration T/K (K being a constant) to an AND gate 5 (3 in Fig. 6), a counter 9 counts reference pulses of frequency T from a generator 2 for the duration of the gating pulse, on shutter opening a generator 24 feeds subtractive pulses of frequency f/K to counter 9 and a zero detector 13 triggers shutter closing (or alternatively pulses of frequency f/K are fed to a second counter and the shutter is closed when the counts are equal). In the modification of Fig. 1 a voltage corresponding to any incomplete reference pulse from generator 2 is stored in an analogue memory 29, the zero detector 13 triggers off a circuit 32 having a time constant K times that of the reference pulses and a comparator 33 actuates a shutter closing circuit 8 when the voltages in memory 9 and circuit 32 are equal. A unit 22 may alter the gating signal duration according to film speed and or diaphragm aperture. A lamp or luminous diode 11 indicates exposure time. Fig. 4 (not shown), shows the circuits in detail. In the modification of Fig. 6, a switch So selects the stage of the counter f1-11 (corresponding to counter 9) at which counting begins according to film speed and/or diaphragm aperture e.g. with a low speed film So is set to contact 4c, the subject brightness is such that six pulses are paned to the counter to trigger flip-flops f4-f9, a lamp or diode L5 visible in the view-finder is thereby energized to indicate that an exposure of 1/60 sec will be made, and the nine pulses required to return the counter to zero provide this exposure period. Reference has been directed by the Comptroller to Specification 1340930.
Patent GB-778360-A (GB)
Title: Improvements in and relating to windows, doors and the like
IPC: E06B3/50
Filed: 1955-12-29
Abstract: 778,360. Windows. DEVESNES. A., and SIEGEL, G. Dec. 29. 1955 [April 30, 1955]. No. 37222/55. Class 20(3)  In a window assembly two sashes 5, 6 are mounted in a frame 1-4, the sash 6 being provided on its upper and lower rails with rollers 8 for sliding horizontally in rectilinear grooves 7 in the frame cross members 3, 4 as shown, or alternatively being mounted as a conventional pivotal sash with hinges on the frame upright 2, and the sash 5 being provided with upper and lower carriages 14, 15 so that it can be opened either by sliding horizontally behind the sash 6, or by pivoting inwards about the frame upright 1. The lower rail of the sash 5 is supported at one end by a roller 20 mounted on the lower carriage 15 and at the other end by a second roller 22 housed in a carriage 23, the bearing surface for the rollers on the frame rail 3 preferably being covered, e.g. with metal, or plastic. The sash 5 is guided in grooves 9 at one end by spindles 16, 18 carried respectively by the carriages 14, 15 and adjacent the other end by the ends of a rod 24 which is also used to fasten the sash 5 in the closed position, the upper and lower ends of the rod 24 being retractable from fastening holes in the frame members 3, 4, by means of a handle 25. Each groove 9 comprises a main portion which is parallel to the corresponding groove 7 and a curved portion 10 which is preferably formed in a metal plate 11 and is extended by a second arcuate portion 13 concentric with an associated pivot pin 12. In order to'slide open the sash 5, the ends of the rod 24 are first retracted by operating the handle 25 so that the sash can be-pivoted slightly and the ends of the rod 24 can be protracted into the grooves 9, thereafter by pulling the handle sideways the sash 5 can be moved laterally behind the sash 6 Curved recesses 17, 19 provided respectively in the outer ends of the carriages 14, 15 co-operate, when the sash' is' against the upright 1. with the pivot pins 12 on the metal plates 11 one of which is let into each cross member 3, 4 adjacent the upright 1. If it is desired to open the sash 5 by pivoting, the handle 25 should continue to be pulled inwards after the ends of the rod 24. have been withdrawn from the holes in the frame cross members 3, 4, the rod 24 being held in the retracted position until the sash 5 has been swung clear of the frame members 3, 4. During the pivotal movement of the sash 5 the spindles 16, 18 enter the arcuate portions 13 of the grooves 9. The inner face of the upright 1 has a vertical arcuate recess 26 to receive the correspondingly shaped adjoining edge of the sash 5. A sash similar to the sash 5 may be disposed on the other side of the sash 6 which may be mounted, on pivots carried by the cross members 3. 4.
Patent GB-827568-A (GB)
Title: Improvements in the production of derivatives of tetrazaporphin which bear aromatic substituents containing sulphonic acid groups and primary amino groups
IPC: C09B47/26
Filed: 1957-11-29
Abstract: Derivatives of tetrazaporphins which bear aromatic substituents containing sulphonic acid groups and primary amino groups are made by condensing a tetrazaporphin sulphonic acid chloride with an arylsulphonic acid containing at least two primary amino groups by splitting off one mol. of hydrogen chloride per mol. of diaminoarylsulphonic acid and, when using less than the amount of the diamino arylsulphonic acid equivalent to the sulphonic acid chloride groups of the tetrazaporphin, the unreacted sulphonic acid chloride groups are saponified or further reacted with ammonia and/or a primary and/or secondary aliphatic monoamine or their salts with weak acids or with a monoaminoalkyl- or -arylsulphonic acid or with a monoaminohydroxyarylsulphonic acid. Tetrazaporphin sulphonic acid chlorides specified include those of metal and metal-free phthalocyanines.  Examples are given.  The products are of a green-blue to blue colour and dye cellulose fabrics or are used as intermediates for dyestuffs.ALSO:Derivatives of tetrazaporphins which bear aromatic substituents containing sulphonic acid groups and primary amino groups are made by condensing a tetrazaporphin sulphonic acid chloride with an arylsulphonic acid containing at least two primary amino groups by splitting off one mol. of hydrogen chloride per mol. of diaminoarylsulphonic acid and, when using less than the amount of the diaminoarylsulphonic acid equivalent to the sulphonic acid chloride groups of the tetrazaporphin, the unreacted sulphonic acid chloride groups are saponified or further reacted with ammonia and/or a primary and/or secondary aliphatic monoamine or their salts with weak acids or with a monoaminoalkyl- or -arylsulphonic acid or with a monoaminohydroxyarylsulphonic acid. Tetrazaporphin sulphonic acid chlorides specified include those of metal and metal-free phthalocyanines.  Examples are given. The products are of a green-blue to blue colour and dye cellulose fabrics or are used as intermediates for dyestuffs.
Patent GB-340394-A (GB)
Title: Improvements in or relating to vehicle bodies and roofs therefor
IPC: B60J7/06
Filed: 1929-12-05
Abstract: 340,394. Road vehicle hoods. HARMER, F. E., Raydale, Chatburn, and BUTLER, H., 36, Charles Street, Colne, both in Lancashire. Dec. 5, 1929, Nos. 37272/29 and 6485/30. [Class 108 (i).] An opening roof for road vehicles is constructed as a unit adapted to be secured in existing closed vehicles when an appropriate aperture has been cut in the roof and comprises an outer covering and hoop-sticks arranged to run on guideways in the unit. The unit comprises a frame formed of angle iron 3 adapted to be secured in position on the vehicle top and is provided at the rear with a housing for the rollers 48, 49 for the outer flexible covering 46 and the inner lining 47. Guide rails 8 are secured to the longitudinal sides of the frame and are engaged by concave rollers 17, 19 arranged on the hoop-sticks, the rollers on one side of the rail being resiliently mounted to prevent rattle. The hoop-sticks 10 are provided at their ends with metallic housings 11 upon which the rollers are mounted and also form the means for interconnecting the hoop-sticks 10. These means comprise bell-crank levers 21, Fig. 6, the arms 22 of which from adjacent hoop-sticks are pivoted together and the arms 23 are linked to a spring-controlled plunger 27 in the housings 11 tending to draw the hoop-sticks together to open the hood. Alternative forms of spring-controlled levers 21 are described. Parallelism of the hoop-sticks is maintained by levers 32, Fig. 1, the ends of which are provided with rollers 33 running in grooves 34 in hoop-sticks 10. The cover 46 at its side edges passes below a cowling plate 40, Fig. 3, which in conjunction with a plate 43 and a gutter 44 serves to drain away the rain water. At the rear the fixed plate secured to the rear cantrail is provided with a squeegee or wiper 54, Fig. 4, to remove water from the cover when it is being retracted and the cover 46 is also provided with a flap 52 which bears against a plate 53 when the cover is extended to prevent access of water to the roller housing which is provided with drain holes 55. At the front the cover 46 is reinforced with a bar 70, Fig. 5, and secured to the front hoop-stick 20. A flexible tongue 38 is secured to the cover as shown while a pendant tongue 45 is provided on the cowling plate 40. In a modification the cowling plate may be dispensed with at the sides and the cover edges passed in a gutter member 58, 60, Fig. 7, having holes 61 leading to a gutter 44. Specifications 323,063, 323,064, and 323,065, [all in Class 108 (i), Road vehicles, Body details &c. of], are referred to.
Patent GB-323900-A (GB)
Title: An improved packing material and process of manufacturing same
IPC: F16J15/12
Filed: 1928-12-18
Abstract: 323,900. Reinz Dichtungs-Fabriken, H. Oct. 3, 1928, [Convention date]. Joint-making packing.-Packing, particularly for the cylinder blocks of internal-combustion en. gines, comprises a closely woven asbestos-metal fabric a, b which is impregnated with a heat- and-moisture resisting substance, e.g. Thiolit, a derivative of the condensation product of formaldehyde and phenol. An impermeable sheath of long-staple asbestos and a suitable filler such as heavy spar, magnesia, or silicon, is applied by rolling under pressure and heat. The cylinder-block packings are then stamped out, coated with graphite, and placed in position.
Patent GB-1001254-A (GB)
Title: Improvements in or relating to semiconductor materials
IPC: H01L29/00
Filed: 1961-10-19
Abstract: <PICT:1001254/C6-C7/1> A semi-conductor material comprises a substantially homogeneous single phase Ag-Sb-Te having a composition falling on the lines of, or within, the triangle A-B-C of Fig. 1.  Up to 30 atomic per cent of the silver may be replaced by one or more of Cu, Tl or Au, up to 50 atomic per cent of the antimony may be replaced by one or both of Bi and As and at most 50 atomic per cent of the tellurium may be replaced by one or both of S and Se.  Small amounts of a halogen may also be present. The alloy may be homogenized by heat treatment at 320-570  DEG C. in an inert gas or vacuum followed by quenching in air, oil or water.ALSO:<PICT:1001254/C1/1> A semi-conductor material comprises a substantially homogeneous single-phase Ag-Sb-Te having a composition on the lines of, or within the triangle ABC of Fig. 1.  Up to 30 at per cent of the silver may be replaced by one or more of Cu, Tl or Au, up to 50 at per cent of the antimony may be replaced by one or both of Bi or As and at most 50 at per cent of the tellurium may be replaced by one or both S or Se.  Small amounts of halogen may also be present.  The alloy may be homogenized by heat treatment at 320-570 DEG  C. in an inert gas or vacuum followed by quenching in air, oil or water.
Patent GB-1439556-A (GB)
Title: Process for the electrochemical fluorination of organic acid halides
IPC: C25B3/28
Filed: 1974-08-29
Abstract: 1439556 Fluorinating organic acid halides electrolytically CIBA-GEIGY AG 29 Aug 1974 [11 Sept 1973] 37905/74 Heading C7B [Also in Division C2] Organic acid halides are electrolytically fluorinated using a Ni or Ni alloy anode and metal cathode at an electrode spacing of 6-12mm using liquid HF electrolyte at 20-50 C and a voltage of 9-15 Vd.c. The halide may be a chloride, fluoride or bromide of a 4-18C alkylsulphonic or carboxylic acid e.g. octane sulphofluoride or n-heptane-1- carboxylic acid fluoride. The halide may be used at 5-20% wt. concentration in commercial anhydrous HF, at a pressure of up to 5 bars, with a current density of 10-100mA/cm<SP>2</SP>. A cathode of Fe, steel, Al, Cu, Ni or a Ni alloy may be used.
Patent GB-1016769-A (GB)
Title: Removal of catalyst from macromolecular homo-polymers and co-polymers
IPC: C08F6/02
Filed: 1962-10-08
Abstract: Metallic catalyst residues are removed from a solution of a homo- or co-polymer in an organic solvent by mixing said solution with an aqueous solution of an acid having a concentration of at least 15% by weight, then adding water and finally separating the aqueous acid phase containing catalyst material, from the polymer solution.  The mixing of the polymer solution with the concentrated acid is preferably carried out in the presence of a small amount of dispersing agent, e.g. glycerol monostearate, an alkylphenyl polyglycol ether or an alkyl phenol polyglycol ether. Any acid that dissolves the catalyst may be used, e.g. nitric, hydrochloric, sulphuric, formic, acetic and chloroacetic acids may be used, and the amount added is preferably 1 to 20% by weight based on the amount of polymer dissolved. Preferably nitric acid is used, the concentration of the acid being 20 to 40% by weight, and the polymer solution is preferably kept at 40 DEG  to 65 DEG  C. during mixing.  In the examples, ethylene-propylene copolymers in gasoline are purified.
Patent GB-1245077-A (GB)
Title: Networks for detecting the same predetermined fraction of each of a succession of periods
IPC: G11B15/087
Filed: 1969-07-30
Abstract: 1,245,077. Digital data storage. AMPEX CORP. 30 July, 1969 [31 July, 1968], No. 38177/69. Headings G4C and G5R. A network is provided for detecting the same predetermined fraction of each of a succession of periods of which the durations may vary. A magnetic tape store has transverse data storage tracks suitable for reading by transverse rotary heads, and a longitudinal address track or tracks, having evenly spaced clock pulses thereon and address data in predetermined fractions of tape between the successive pulses. The clock pulses are fed to a bi-stable 3 controlling switches 11, 13, 31, 35 which control the charging of capacitors 15, 17 from a current generator 33. The voltages of the capacitors are shown, Fig. 5B, when the speed of the tape, and hence the clock pulses, is varying. Capacitor 15 charges up, then a clock pulse is received which opens switch 31, hence the voltage of capacitor 15 remains constant, and also momentarily opens switch 13, capacitor 17 discharges and then begins charging. At the next clock pulse the reverse occurs. The constant capacitor voltage at any time is used as a reference voltage E ref  and the charging capacitor voltage is fed to an input 22 of a differential comparator which starts an address reading head when the voltage at input 22 exceeds a voltage E<SP>1</SP> derived from the reference voltage. Since E ref  varies with the speed of the tape the same fraction of tape is detected each time. In a modification (Fig. 2, not shown), a second comparator is provided, one comparator starting detection and the second stopping detection whereas in the first embodiment the next clock pulse stops detection. In another embodiment, Fig. 3, only two switches are used. In all embodiments the reference voltage can be kept constant, regardless of tape speed, by providing feedback from E ref  to the current generator 33 which provides an increasing capacitor charging rate for increasing speed.
Patent GB-1142902-A (GB)
Title: Improvements in or relating to vacuum purification of metals
Inventor: STOCKS LEON
IPC: C22B13/06
Filed: 1966-08-30
Abstract: 1,142,902. Vacuum apparatus for purifying metals. IMPERIAL SMELTING CORP. (N.S.C.) Ltd. Aug.25, 1967 [Aug.30, 1966], No.38669/66. Heading C7D. A vacuum vessel for purifying liquid metals includes a removeable unit comprising a singlestart spiral channel secured to a frusto-conical or cylindrical backing plate. The removeable unit may be hung from a ledge around the upper part of the vessel, preferably by means of flanges on the backing plate, or may rest on the floor of the vessel. The use of the apparatus for removing zinc from molten lead is described.
Patent GB-1524517-A (GB)
Title: Methods of and furnaces for melting glass
IPC: C03B5/027
Filed: 1974-09-06
Abstract: 1524517 Making glass ELEMELT Ltd 3 Sept 1975 [6 Sept 1974] 38938/74 Heading C1M An electrically heated furnace is fed with batch materials to cover the surface of the melt, the melt is withdrawn from an outlet in the lower part of the furnace and the melt is further electrically heated locally above the lateral withdrawal path to produce an upward connective force to counteract entrainment of batch in the outlet flow. The supply of electricity to the furnace may be accomplished in a number of described ways.
Patent GB-1442477-A (GB)
Title: 2-iminomethyl-3,4,5,-trimethoxycinnamic acid and esters thereof  and their production
IPC: C07C67/00
Filed: 1974-09-06
Abstract: 1442477 2 - Iminomethyl - 3<SP>1</SP>,4<SP>1</SP>,5<SP>1</SP> - trimethoxycinnamic acid and C 1-4  alkyl esters thereof GEA AS 6 Sept 1974 [10 Sept 1973] 38983/74 Heading C2C Novel 2-iminomethyl-3<SP>1</SP>,4<SP>1</SP>,5<SP>1</SP>-trimethoxycinnamic acid and C 1-4  alkyl esters thereof are prepared by reducing 3,4,5-trimethoxybenzylidene-cyanoacetic acid or a C 1-4  alkyl ester thereof in a neutral or alkaline medium at room temperature. The novel compounds may be reacted with guanidine to form 2,4-diamino-6-hydroxy-5- (3<SP>1</SP>,4<SP>1</SP>,5<SP>1</SP>-trimethoxybenzyl)pyrimidine, which can be converted to 2,4-diamino-5-(3<SP>1</SP>,4<SP>1</SP>,5<SP>1</SP>-trimethoxybenzyl)pyrimidine(trimethoprim) by treatment with POCl 3 , followed by (a) catalytic hydrogenation of the resulting 2,4-diamino-6- chloro - 5 - (3<SP>1</SP>,4<SP>1</SP>,5<SP>1</SP> - trimethoxybenzyl)pyrimidine, or (b) reaction of the resulting compound with hydrazine and treatment of the resulting 2,4- diamino - 6 - hydrazino - 5 - (3<SP>1</SP>,4<SP>1</SP>,5<SP>1</SP> - trimethoxybenzyl)pyrimidine with aqueous CuSO 4 .
Patent GB-1200642-A (GB)
Title: Turnstile mechanisms
Inventor: BYLAND HENRY LOWELL
IPC: E06B11/08
Filed: 1967-08-24
Abstract: 1,200,642. Turnstiles. LITTON INDUSTRIES, Inc. 24 Aug., 1967 [21 Sept., 1966], No. 39090/67. Heading E1J. [Also in Divisions F2 and G4] A turnstile mechanism having barrier arms rotatable through a predetermined arcuate path to permit passage of a person causing such rotation, comprises a hub 13 inclined at 45 to the vertical and carrying three barrier arms 15 each inclined at 45 to the hub axis and resiliently connected to a toothed plate 21 having mounted thereon three rollers 32, 37, 41. A dashpot type damping system is associated (Division G4).