baber/WOPTO huggingface dataset:
Patent GB-742189-A (GB)
Title: Improvements in or relating to electric protective arrangements
Inventor: HAMILTON FREDERICK LESLIE
IPC: H02H3/30
Filed: 1953-02-11
Abstract: 742.189. Protective cut-out arrangements. REYROLLE & CO., Ltd., A. Feb. 11. 1954 [Feb. 11, 1953], No. 3862/53. Class 38(5) In a protective arrangement of the balanced voltage type, the protective relay at each end of the pilot circuit is in the form of an impedance relay device of the mho type or of the offset mho type responsive to the relative magnitudes of the current and the voltage in the pilot circuit and to the phase angle between them. The relay device preferably operates in accordance with a comparison of two quantities, one of which is dependent on the current in the pilot circuit and the other on a vectorial combination of the pilot current and a current dependent on the pilot voltage. In Fig. 1, a rectifier comparator circuit comprises rectifiers J, J<SP>1</SP>, the input terminals of the rectifier J being connected in series in the pilot circuit and those of the rectifier J<SP>1</SP> to the output terminals of a mixing transformer H having a primary winding H' connected in series with the pilot circuit and a primary winding H<SP>2</SP> connected in series with a parallel connected resistance E. and capacitance E<SP>1</SP> across the pilot circuit. The rectifiers J, J<SP>1</SP> are so connected that. current circulates in their output circuit across which a polarized D.C. relay G is connected for response when the pilot current input through rectifier J is greater than the input through rectifier J<SP>1</SP> of the vectorial comparison of the pilot current and voltage made in the transformer H. The pilot circuit D, D<SP>1</SP> is supplied from current transformer B<SP>1</SP>...B<SP>3</SP> through a saturable summation transformer C, non-linear resistor C<SP>2</SP> and filter C<SP>3</SP>. In Fig. 2 (not shown) a diagram of the reactance-resistance characteristic indicates how the device would respond to internal but not to external fault conditions and reference is made to the setting of the device to compensate for the effect of pilot capacity. Comparison of the two quantities may be effected by means of a transductor having its operating winding or windings connected in series in the pilot circuit and its D.C. control winding supplied from the mixing transformer through a rectifier. Alternatively, by the use of two control windings R, R<SP>1</SP> and a smoothing winding P with a half-wave rectifier P<SP>1</SP>, the vectorial comparison and rectification are effected in the transductor. Secondary windings O, O<SP>1</SP> linked with the A.C. operating windings N. N<SP>1</SP> supply a D.C. relay Q through a rectifier Q<SP>2</SP>. Various other transductor arrangements are referred to.
Patent GB-652643-A (GB)
Title: Improvements in and relating to exhaust-silencers and combustion-air preheaters for internal combustion engines
IPC: F01N5/02
Filed: 1948-02-10
Abstract: 652,643. Exhaust silencers and charge heaters. BRADFORD, R. Feb. 10, 1948, No. 3903. Divided out of 652,642. [Group XXXI] [Classes 7(ii) and 7(iii)] A combined exhaust silencer and combustionair heater, especially for a tractor engine, comprises an expansion chamber 1, into which exhaust is admitted by an openended pipe 3, and which contains a closed chamber 2 through which the air is passed. The air is admitted by a pipe 7 which extends axially up the exhaust pipe 5 of the tractor and which carries a baffle 10 to direct the exhaust gases out under a cowl 9. Baffles 6 are also provided on the pipe 2 and the chamber 3.
Patent GB-555179-A (GB)
Title: Colour television signal-translating system
IPC: H04N9/73
Filed: 1942-03-24
Abstract: 555,179. Colour television. HAZELTINE - CORPORATION. March 24, 1942, No. 3907. Convention date, May 2, 1941. [Class 40 (iii)] In a television receiver having a single signaltranslating channel for cyclically supplying signals of complementary colours to an image reproducing device such as a cathode-ray tube 17, the amplification of the channel is cyclically varied in synchronism with the colour signals to produce the desired over-all colour balance of the image. As shown, the video frequency amplifier 16 transmitting the image signals to the electron gun of the cathode-ray tube 17 is provided with a tapped resistance 30 to determine its gain. Three tappings 31, 32, 33 are provided and connected to three brushes 39, 40, 41 of a commutator 36, 37, 38 with a slip ring 34 connected through a brush 35 to the video frequency amplifier 16. The commutator is driven by the synchronous motor M which rotates the colour screen 42 in front of the cathode-ray tube. The screen shown has three segments, red, blue, and green respectively. The motor M is synchronized with the frame frequency of the transmission and is interlocked therewith in correct phase by a phase lock 44 connected to the synchronizing-signal separator 20. Any other suitable gain control system and any other suitable keying and commutating devices may be used. The gain may also be made manually adjustable, for example by arranging the tappings 31, 32, 33 so that they can be operated by hand.
Patent GB-655878-A (GB)
Title: Improvements in or relating to valve means for controlling pressure fluid operated devices applicable to die-casting machines
IPC: B22D17/32
Filed: 1948-02-11
Abstract: 655,878. Casting-machines. COULTHARD & CO., Ltd., W., and GASH, F. Feb. 11, 1948, No. 3937. [Class 83 (i)] [Also in Group XXIX] In a pressure die-casting machine comprising a combined metal magazine and shooting cylinder 16, Fig 1, housing a pneumaticallyoperated piston 18, Fig. 2, connected to a shooting ram 19, the piston 18 is propelled upwardyl by air pressure admitted through a conduit 24 to its lower face and is retracted, when this conduit is vented to atmosphere, by air pressure which acts continuously on an annular part 27 of the piston. Operation of the piston 18 is controlled by a hand-operable valve 28, and a valve 40 (see Group XXIX) has adjusting means for controlling separately the rate of flow of air to and from the piston 18 to regulate the speed of the shooting and return movements thereof. Such a speed-controlling valve may also be associated with a pneumatic jack 14 controlled by a hand-operable valve 15 and actuating the movable die-carrier.
Patent GB-689936-A (GB)
Title: Improvements in or relating to sieveless centrifugal mills
IPC: B02C13/22
Filed: 1951-02-19
Abstract: 689,936. Impact pulverizers. ALPINE AKT.-GES Feb. 19, 1951 [April 22, 1950], No. 3958/51. Class 59 In a centrifugal mill, preferably of the peg type, having two discs 1, 2 rapidly rotating at different speeds in the same or different directions, the slower disc 2 and its driving motor are mounted on a hinged access door 19 and the surrounding chamber 5 is of large diameter so that the ground material, having lost its energy before it strikes the outer wall, adheres only loosely to the chamber walls. The motor is mounted on a pivoted frame to facilitate belt - tensioning, particularly when the pulley sizes are altered. Formulae are given for the chamber diameter required at different rotor speeds. For controlling the temperature in the grinding zone and for varying the fineness of grinding, the amount of air or other gas entering the grinding zone is controlled by a valve 8 or by a flap or exchangeable nozzles in the feed pipe 3 and the feed device 7 is made air-tight. Air or other gas, for cooling, drying or chemically treating the ground material, is introduced through valves 9 and blower vanes 10 on the discs direct it into the chamber 5, the edges 12 of the discs and the walls of the chamber being formed so that the streams of ground material and gas are prevented from directly striking the chamber sides; alternatively, the air or gas may be intro'- duced tangentially into the sides of the chamber outside the grinding zone. In the modification shown in Fig 2, the inner surface of the faster disc 1 is flush with one wall of the chamber and ground material is deflected into the chamber by the stream of gas, the deflection preferably being assisted by a shroud 13 on the disc 1. The speed of the discs may be sufficiently high to induce supersonic vibrations in the stream of gas passing through the grinding zone.
Patent GB-466660-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/71
Filed: 1937-02-10
Abstract: 466,660. Friction clutches. BORG & BECK CO., Ltd. Feb. 10, 1937, No. 3993. Convention date, Aug. 24, 1936. [Class 80 (ii)] In a friction clutch wherein compression springs 14 are arranged between the presser plate 5 and the cover plate 2, and driving lugs 6 extend from the presser plate into openings 7 in the cover plate, the arrangement is such that, during assembly, the springs are distorted so as yieldingly to maintain the lugs in contact with the driving sides 27 of the openings. One end of each spring seats in a recess 15 in the plate 2 while the other end is retained in position by a central boss 29 and a number of outer bosses 30 formed on the plate 5. In the arrangement shown in Fig. 3, the seating surface of each recess 15 is inclined so as to produce the distortion of the spring. Alternatively, the seating surface on the presser plate may be inclined, or the ends of the spring may be inclined relatively to one another, or, as shown in Fig. 6, the ends of the spring may be out of alignment.
Patent GB-1128303-A (GB)
Title: Method of and apparatus for washing blood or other biological cells
IPC: A61M1/36
Filed: 1966-01-28
Abstract: 1,128,303. Centrifugal separators. IVAN SORVALL, Inc. 28 Jan., 1966 [3 Feb., 1965], No. 4022/66. Heading B2P. Biological, e.g. blood, cells are washed by mixing a suspension of the cells with a washing solution having a density less than that of the cells, subjecting the mixture to a centrifuging action thereby providing a counterflow between the cells and the washing solution and removing from the mixture effluent produced during centrifuging. Blood and saline washing solution are continuously drawn by means of a pump 31 respectively from a sterilized plastic bag 21 and a sterilized storage bottle 22, Fig. 1, through a junction fitting 33 where they are mixed and the mixture is delivered via a tube 29, a flow meter 34, tubes 36, 37, 38 and a rotary joint to radially and downwardly extending tubes 44 in a continuous flow centrifuge 39 which is housed in a temperaturecontrolled chamber 47. Each tube 44, Fig. 2, is provided with an inlet tube 48, for the supply of the mixture, and an outlet tube 49, for the removal of effluent, which extend through a compression element 51 closing the tube 44. The tubes 48 and 49 of all tubes 44 are connected respectively to a common inlet and a common outlet manifold (not shown). Each tube 48 is constricted at its outlet end to form one or two terminal ports 57 and is provided along its length with ports 58 which distribute the incoming mixture to spacedapart regions of the tube 44 having different values of centrifugal acoeleration. During centrifugation, the heavier blood cells move outwardly and downwardly in each tube 44, while the lighter washing solution moves in a counterflow direction inwardly and upwardly and emerges as an effluent through outlet tube 49 to be continuously discharged to waste via tubes 41, 42, 43. After completion of a washing operation, each tube 44 is removed from the centrifuge. An air filter 61 is attached by a sterilized tube 62 to the tube 48 and a hollow sterilized needle 63 is connected by a sterilized tube 66 to the tube 49. The tube 44 is then clamped in a support pedestal 67 and the needle 63 is caused to pierce a resilient cap 68 in a storage bottle 59. Transfer of the washed blood cells from the tube 44 to the bottle 59 then takes place by gravity.
Patent GB-1498931-A (GB)
Title: Tetrahalopentyl ketone derivatives processes for producing them and their conversion to beta-dihaloethenylcyclopropane derivatives
IPC: A01P7/04
Filed: 1976-02-02
Abstract: 1498931 Haloketones SUMITOMO CHEMICAL CO Ltd 2 Feb 1976 [12 Feb 1975 (4)] 04037/76 Heading C2C The invention comprises compounds of the formula  where R 1  is H or alkyl, R 2  is C 1-6  alkyl, R 3  is H, C 1-6  alkyl, acyl or alkoxycarboxyl, X is Cl or Br and Y 1 , Y 2  and Y 3  are F, Cl or Br provided that when X is Cl each of Y 1 , Y 2  and Y 3  is F or Cl. The compounds may be prepared by reacting compounds of the formulµ The compounds may be treated with a base to yield compounds of the formulµ where R<SP>1</SP> 3  is H, C 1-6  alkyl, acyl, carboxy or alkoxycarbonyl, oxidation of which yields compounds of the formulµ Compounds of Formulµ III and V may be converted to compounds of Formulµ IV and VI, respectively, by treatment with a base.
Patent GB-808246-A (GB)
Title: Method of manufacturing wooden articles consisting of a plurality of jointed members
IPC: B27M3/06
Filed: 1957-02-06
Abstract: 808,246. Wood cutting and working. ANDERSSON, H. A. Feb. 6, 1957 [Feb. 11, 1956], No. 4086/57. Class 145. A method of manufacturing wooden articles consisting of a plurality of pieces jointed together comprises first sorting the pieces into groups selected with respect to the number of relative disposition of the defectfree faces of the lengths in such a manner that each group contains lengths having the same number of defect-free faces and then jointing together lengths belonging to one or different groups so that the finished article exhibits one or more defect-free outer surfaces. Fig. 1 shows one sorted group A consisting of three lengths 1, 2, 3 each having one defect-free side 4, 5, 6 which at stage I are all arranged uppermost and at stage II glued and/or rabbetted together to form a single block. At stage III, this block is sawn along planes 10, 11 to provide three units 12, 13, 14 each having at least two defect free sides as shown at stage IV. Other groups of pieces which are sorted at the same time as the group A have a different number or relative disposition of defect-free sides and are treated as for group A. Articles may be formed by selection from two or more of the groups. The pieces of each group are cut, originally from boards 59, Fig. 2, which have been sawn from a log 58, the corner pieces or wanes 60, 61 being themselves first trimmed to a triangular crosssection and then sorted and jointed together into a block, Fig. 4 (not shown) so that knot-free boards may be produced. The sorting of the lengths may be effected manually or partly or completely mechanically.
Patent GB-322132-A (GB)
Title: Improvements in or relating to planetary transmission mechanisms
IPC: F16H3/72
Filed: 1929-02-07
Abstract: 322,132. Henin, R. Feb. 7, 1929. Variable-speed epicyclic gearing.-In a differential transmission mechanism for cranes, &c. in which a sun pinion 2 fixed to the driving shaft 2m meshes with a pinion or pinions 2r which engage an internally and externally toothed crown 3 and in which the pinions 2r are integral with pinions 5r engaging a second toothed crown 12 keyed to the driven shaft 5k, the external teeth of the crown 3 are in the same diametral plane as the internal teeth. and engage with a spur gear driven by an auxiliary motor whose shaft 14 is parallel to the driving- shaft 2m. The crown 3 is rotatably supported in ring-shaped bearings 9 lying in annular grooves in the chown and secured to the casing 13 of the mechanism.
Patent GB-1127113-A (GB)
Title: Improvements in or relating to filters
IPC: B01D46/10
Filed: 1966-01-31
Abstract: 1,127,113. Air filter; coated glass-fibre fabrics. D. A. G. MARSHALL. 28 April, 1967 [31 Jan., 19661, No. 4135/66. Headings BIT and B2E. An air filter for a kitchen extractor or ventilation system, able to stand high temperatures, comprises a corrugated section of woven glass fibre, impregnated with phenolic resin and cured at 280‹C for 20 minutes in a metal or plastics frame. The fabric is of multi-filament threads, and the corrugated .shape is held during curing to set the filter to shape.
Patent GB-305591-A (GB)
Title: Manufacture of objects having the appearance of worked metal
IPC: B44F9/10
Filed: 1929-02-07
Abstract: 305,591. Soc. Lumifer. Feb. 7, 1928, [Convention date]. Ornamenting. - Materials having the appearance of forged iron, silver, or bronze, or any other worked metal, are produced by applying to a support of wood, metal, &c. a coating composition consisting of 500 grams of p1aster of Paris, 800 grams of liquid skin g1ue, from 2.5 to 75 grams of desiccated sinew glue, and 250 grams of lead oxide, the coating being worked before it is dry, to imitate the relief of forced or hammered iron &c. Any desired finish is given to the worked coating, according to the metal to be imitated. The composition may be applied by means of a brush, by immersion in a bath, or by spraying.
Patent GB-212239-A (GB)
Title: Improvements in three-wheeled road vehicles
IPC: B62D61/08
Filed: 1924-02-19
Abstract: 212,239. Herds, E. March 1, 1923, [Convention date]. Wheel-forks.-In three-wheeled motor-vehicles (including cycles and tractors) of the kind having a single front steering wheel 10 connected to the main frame by a vertical pivot 6 in front of the wheel, the wheel is mounted in resiliently supported bearings. As the wheel is swung about the pivot for steering it is moved bodily laterally away from the centre of the curve which is being traversed. The member 6 is pivoted to the main frame 1 and to stays 4 and' carries a horizontal spring or other fork 9 in which the wheel spindle is mounted. A vertical fork 11 is connected to the pivot 6 by a spring or other arm 12. The wheel 10 is steered by means of a screw-shaft 18, a nut on which engages an arm 14 fixed to the steering pivot. Modifications are described in which (i) a rigid fork 9 is pivoted to the member 6 and the vertical movements of the wheel 10 are absorbed either by the spring arm 12 or by a coil spring arranged between the top of the fork 11 and a rigid stay arm taking the place of the arm 12, and (ii) a rigid horizontal fork is pivoted to the member 6 and the wheel 10 is mounted in this fork either directly or through a vertical spring-controlled fork, the horizontal fork being controlled by a second vertical fork having its crown guided on a curved frame member. Steering in this modification is effected by means of cords or chains passing over pulleys on the frame and the steering shaft.
Patent GB-1362602-A (GB)
Title: Foundations for card clothing
IPC: D01G15/86
Filed: 1972-01-29
Abstract: 1362602 Card clothing foundations ENGLISH CARD CLOTHING CO Ltd 15 Jan 1973 [29 Jan 1972] 4267/72 Heading D1N [Also in Division B5] A card clothing foundation is manufactured by treating the surface to provide an antifriction or release surface. The foundation may be a laminate of linen and cotton bonded by vulcanized india rubber or alternatively leather or plastics. A surface layer of acrylonitrile fabric is provided with a coating of isocyanate sprayed on. The release surface may be provided by polyurethane including a silicone. This may be sprayed on or applied as a sheet. The polyurethane may alternatively be applied by a doctor blade 36 which determines the layer thickness. The surface coating may be cured by passing over a steam chest 40.
Patent GB-946053-A (GB)
Title: Pigments
IPC: C09B67/00
Filed: 1962-02-05
Abstract: A pigment which is very finely dispersable in aqueous and non-aqueous media is produced by treating the pigment with a surface active alkylene oxide addition product which dissolves clearly at a concentration of 1% in distilled water at 0 DEG  C., if desired with the addition of 1% of an addition product of 1 mol. nonyl phenol and 10 mols. ethylene oxide, and the clear 1% aqueous solution of which becomes cloudy on the addition of 10% anhydrous sodium sulphate and/or on heating to a temperature of up to 70 DEG  C., then adding an electrolyte to the mixture whereby the alkylene oxide addition product is deposited on the pigment surface; and the pigment thus obtained is then separated.  In examples the process is applied to yellow iron oxide and to green chromium oxide.  The electrolyte which is added may be a halide, sulphate or phosphate; the preferred example is sodium sulphate. Sedimentation agents such as polyacrylamide or ammonium polyacrylate, filter aids such as vinyl methyl ether, grinding assistants such as sodium sulphate, and additives to prevent caking of the particles such as methyl cellulose, ethyl cellulose, carboxy methyl cellulose, starch and alginates may be added to the pigments. Suitable surface active alkylene oxide addition products are the addition products of ethylene oxide or propylene oxide and alkyl phenols or alkyl naphthols or aliphatic monovalent or polyvalent alcohols, esters, amines, amides, imidazoline or mercaptan addition products or mixtures thereof.ALSO:A pigment which is very finely dispersable in aqueous and non-aqueous media is produced by treating the pigment with a surface-active alkylene oxide addition product which dissolves clearly at a concentration of 1% in distilled water at 0 DEG  C., if desired with the addition of 1% of an addition product of 1 mol. nonyl phenol and 10 mols. ethylene oxide, and the clear 1% aqueous solution of which becomes cloudy on the addition of 10% anhydrous sodium sulphate and/or on heating to a temperature of up to 70 DEG C., then adding an electrolyte to the mixture whereby the alkylene oxide addition product is deposited on the pigment surface; and the pigment thus obtained is then separated.  In examples the process is applied to azo-pigments, yellow iron oxide, green chromium oxide, and copper phthalocyanine.  The electrolyte which is added may be a halide, sulphate or phosphate; the preferred example is sodium sulphate.  Sedimentation agents such as polyacrylamide or ammonium polyacrylate, filter aids such as vinyl methyl ether, grinding assistants such as sodium sulphate, and additives to prevent caking of the particles such as methyl cellulose, ethyl cellulose, carboxy methyl cellulose, starch and alginates may be added to the pigments. Suitable surface-active alkylene oxide addition products are the addition products of ethylene oxide or propylene oxide and alkyl phenols or alkyl naphthols or aliphatic monovalent or polyvalent alcohols, esters, amines, amides, imidazoline or mercaptan addition products or mixtures thereof.
Patent GB-473182-A (GB)
Title: Improvements in radiators for heating buildings
IPC: F24C7/06
Filed: 1937-02-09
Abstract: 473,182. Reflector stoves. ROSS, F. A. Feb. 9, 1937, No. 4323/36. [Classes 39 (iii) and 126] In a radiator comprising a source a of radiant heat mounted in front of and substantially at the focus of a concave reflector b, and a light source c mounted behind the reflector b, the light from the source c being visible from the front through a plurality of apertures or breaks in the reflector, the arrangement is such that the light does not fall directly on the heat source a. The reflector may be composed of perforated sheet-metal, Fig. 2, spaced metal strips b<2>, Fig. 5, spaced metal rings forming a bowl, or heat-proof glass or quartz silvered over selected areas. The casing d behind the reflector may have a white or reflecting surface, and with the reflector may form a passage to heat air. An auxiliary heater may be arranged in this passage. There may be more than one heat source a. This source may use electricity, gas, or oil.