baber/WOPTO huggingface dataset:
Patent GB-759833-A (GB)
Title: Improvements in or relating to process for making steel
IPC: C22C33/02
Filed: 1951-10-10
Abstract: Steel is made by heating a mass of iron oxide in the presence of a reducing agent until the oxide is completely reduced to iron, adding carbon to the metal before cooling to form a celluliferous steel of predetermined carbon content, holding the temperature at a value between 1350 DEG F. and the melting point of the steel, and then hot working the celluliferous steel to a non-celluliferous form.  Mill scale may be packed in paper tubes which are loaded in a mixture of coke breeze and limestone and heated to 1950 DEG F. for 24 hours. The celluliferous iron produced had a carbon content of 0,35 per cent.  The hot working may be carried out in a non-oxidising atmosphere before the steel has cooled or the celluliferous steel may be cooled in a non-oxidising atmosphere and reheated before hot working.  Alloying elements may be added as easily reducible oxides, e.g. oxides of vanadium or cobalt, or as metal powders, e.g. Mn, Cr and W.  Specification 759,834 is referred to.
Patent GB-439583-A (GB)
Title: Improvements in or relating to the separation of ammonium salts from their mixtures with other salts
IPC: C01C1/24
Filed: 1934-08-15
Abstract: Ammonium salts such as ammonium chloride are separated from mixtures with other salts by bringing the mixture of salts into suspension in a liquid of a density less than that of any of the non-ammoniacal salts of the mixture and bringing this suspension into contact with a flotation reagent constituted by one or more liquids of a density less than that of the suspension liquid and capable of adhering to the ammonium salts to form a pulp floating on the surface of the bath, this pulp being decanted and treated to recover the ammonium salts whilst the other salts remaining in the bath are collected separately.  Suitable flotation reagents are mineral, animal and vegetable oils, e.g. arachidic oil or petrol alone or in admixture, or gas oil.  The suspension medium may be an aqueous solution saturated with respect to all the constituents of the saline mixture. The pH of the suspension medium may be so adjusted that the formation and stability of the pulp is optimum.  In separating ammonium chloride from sodium nitrate in a suspension medium consisting of the mother liquor which has served for the double decomposition of ammonium nitrate and sodium chloride while using a mineral and/or vegetable oil as flotation reagent an alkalinity corresponding to at least 0,5 gram of free ammonia per litre should prevail.  In separating potassium nitrate and ammonium chloride while employing a mineral oil, the alkalinity should not exceed 5 grams of free NH3 per litre.  After separation of the pulp, and suspension liquid from the deposited salts, the pulp may be broken down by varying the pH (e.g. diminishing it) with agitation.  The ammonium salts settle and the flotation liquid collecting on the surface of the suspension liquid can be re-used.  The admixture and homogenization of suspension and flotation liquids and the saline mixture may be effected by kneading or agitation or the use of pumps injectors, funnels, &c.  The separation of the floated pulp and the deposited salts may be effected in continuous or non-continuous decanting apparatus.  The destruction of the isolated pulp may be assisted by centrifuges or the injection of b  steam.  If the separated salts are to be used as fertilizers, it may be of advantage to allow a portion of the flotation liquid to remain in contact with them thereby forming a coating on the latter which prevents caking or storage.
Patent GB-688262-A (GB)
Title: Improvements relating to grilling appliances
IPC: A47J37/06
Filed: 1949-09-13
Abstract: 688,262. Grilling-stoves. CANNON IRON FOUNDRIES, Ltd., and OATLEY, A. F. Sept. 8, 1950 [Sept. 13, 1949; Feb. 14, 1950], Nos. 23573/49 and 3705/50. Class 126 A grilling appliance has a pivotally mounted gas heated grill which can be stowed in a vertical position and supported in a horizontal operative position, and an open-fronted housing for the grill with a food support hinged to a lower part of the housing. A grill is mounted in an openfronted housing 11 above the splash plate 10 of a cooker, one of the side walls 12 of the housing extending sideways in front of the burner entry point. A food support 14 is pivoted at 13 so that is be swung up to close the front of the housing. The burner 15 is pivoted about supply iet 16 and trunnion 17 and the fret 19 lies to one side of the burner axis. Vents 29 are provided in the back of the housing. The food support 14 and grill fret 19 are connected to linkage 20, 21 according to Specification 675,974 so that the grill moves to an operative position when the support is swung down. The gas supply cock 30 has a drop handle 31 of such length that the housing cannot be closed when the gas supply is turned on. In one modification, Figs. 4 and 5 (not shown), the burner is fixed and the fret rotates about a bearing at one end of the burner and a trunnion secured to the housing. In a further modification, Figs. 6, 7, 8 (not shown), the burner and grill fret lie on opposite sides of the axis about which they turn, the burner axis being only slightly offset from the axis of rotation.
Patent GB-155657-A (GB)
Title: Improvements in or relating to brick cutting machines
IPC: B28B11/16
Filed: 1919-09-25
Abstract: 155,657. Smith, W. Sept. 25, 1919. Stream-cutting machines. - Relates to brickcutting machines of the type comprising a series of knives which are engaged by the moving column of clay and are constrained by guides to enter and leave the column vertically, and consists in the provision of double guides to obviate twisting of the knives, As shown in Figs. 1 and 3, a series of knives A are connected by links B, each blade A being secured to arms D furnished with rollers E engaging double guide-grooves a. The lower guide a is omitted at the upper part of the machine to permit the knives to be turned over by a cross-bar G engaging lugs g. The clay column passes over a roller m and platform L having a slotted portion N to allow the knives to pass completely through the column, the front part of the portion N being spring-retained. A take-off roller 0 is driven by a rack P, Fig. 9, reciprocated from any suitable part of the machine, engaging a pair of ratchet wheels Q. A modification of the machine is described in which the knives are connected by slotted wheels. Figs. 13 and 14 show a further modification in which the knives are connected to slides c engaging angular guides of the section shown in Fig. 13.
Patent GB-492556-A (GB)
Title: Improvements in or relating to punches, more especially for punching fine holes
IPC: H04N3/04
Filed: 1937-08-31
Abstract: 492,556. Making punches. GENERAL ELECTRIC CO., Ltd., GARDINER, H. W. B., and WALTER, D. O. Aug. 31, 1937, No. 23812. [Classes 83 (ii) and 83 (iv)] A punch for making holes in television discs 2 is made by embedding a wire in a supporting block, grinding flat the end face of the block and the wire and then removing a portion of the block to expose the wire. A tungsten or tungsten carbide wire 1 of the desired diameter is coated with copper 2 or nickel by electrodeposition or casting. A coating 3 is then applied by electrodeposition or casting. If electrodeposition is used, the inner coating 2 is deposited with a small current and the coating 3 by a large current in order to facilitate the easy removal of the coating 3. The end face of the block is then ground to a plane concave or convex surface and the layers 2, 3 are removed by etching with nitric acid, by electrochemical means or by turning in a lathe, to expose a length of wire equal to about three or four diameters. A plurality of the punches may be mounted in a holder. Specification 466,966, [Group XL], is referred to.
Patent GB-669874-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/10
Filed: 1949-09-16
Abstract: 669,874. Knitting-machines. OFFICINE MONCENISIO GIA ANON. BAUCHIERO. Sept. 16, 1949 [Nov. 17, 1948], No. 23913/49. Drawings to Specification. Class 74 (ii). The drive for a circular machine having either a single cylinder or double cylinders is transmitted entirely by gears, all of which have their axes vertically disposed from an electric motor which also has its driving-shaft vertically disposed. The drawing-off mechanism is also driven by gearing similarly mounted.
Patent GB-1019951-A (GB)
Title: Improvements in or relating to mixing machines
IPC: A23G3/02
Filed: 1961-07-03
Abstract: 1,019,951. Mixing containers; closures. MORTON MACHINE CO. Ltd., and T. STEELE. June 21, 1962 [July 3, 1961], No. 24000/61. Heading B1C. [Also in Division B8] A mixing machine, e.g. as disclosed in Specification 767,403 for mixing confectionery ingredients fed from a hopper, includes a container 2 with a removable lid 5 having a feed opening 4 formed with a seating for a closure 11. The closure is carried by an arm 9 pivoted to the lid and an operating piston 14 engages the arm. A vent 21 beneath a screw thread of the lid ensures the release of pressure unless the lid is made tight.
Patent GB-1076878-A (GB)
Title: Use of bis-benzoxazolyl stilbenes as optical brighteners for synthetic organic material
IPC: C07D263/62
Filed: 1965-06-04
Abstract: Organic synthetic materials are optically brightened by treatment with a stilbene derivative of the formula <FORM:1076878/C3/1> wherein A3 is a phenyl radical optionally substituted by halogen, nitrile, amino, acylated amino, C1- 18 alkyl, aryl, carboxyl, carboxylic acid ester or sulphonamide groups.  The stilbene derivative is incorporated in polymeric materials prior to the formation of fibres, films or shaped articles.  Specified polymeric materials are polyvinyl esters, polyacrylic esters, polyethylene, polypropylene, polyisobutylene, polyesters, polyamides, polyurethanes, polyacrylonitrile, polystyrene, polyvinylchloride, polyvinylidene chloride and polyvinyl alcohol. Examples relate to compositions based on (2) a polyester granulate of polyterephthalic acid ethyleneglycol ester, (3) polyethylene, and (5) polypropylene powder.ALSO:Bis-benzoxazole stilbenes of the formula <FORM:1076878/C2/1> where A3 is a phenyl radical optionally substituted by halogen, C1- 8 alkyl, carboxyl, carboxylic acid ester, nitrile or sulphonamide groups, are prepared by (1) heating the appropriate 6-methylbenzoxazole with sulphur at a temperature above 250 DEG  C., or (2) condensing 1 mol. of a stilbene compound of the formula <FORM:1076878/C2/2> with 2 moles of a carboxylic acid A3.COOH or a functional derivative thereof at an elevating temperature, or (3) dehydrogenating an dihydrostilbene of the formula <FORM:1076878/C2/3> e.g., with sulphur or palladium and air. Specified compounds are the unsubstituted compound and those in which the radical A3 is substituted by t-butyl, halogen, phenyl, carboxy, is propyloxy carbonyl, nitrile or sulphonamido groups.ALSO:Synthetic fibres are optically brightened by treatment with stilbene derivatives of the formula <FORM:1076878/D1-D2/1> in which A3 represents a benzene residue, optionally substituted by halogen, nitrile, amino, acylated amino, C1-18 alkyl, aryl, carboxyl, carboxylic acid ester or sulphonamide groups.  It is preferred to use an aqueous neutral, or weakly alkaline or acid bath which may include carriers or p  dispersants, e.g. soaps, polyglycol ethers of fatty alcohols, fatty amines or alkylphenols, cellulose sulphite waste liquor or formaldehyde condensates.  The fibres may be in the form of staple fibres, monofils, hanks, fleeces or fabrics.  Specified are fibres made of cellulose esters, polyesters, polyamides, polyurethanes, polyacrylonitrile, polystyrene, polyvinylchloride, polyvinylidene chloride, polyvinylalcohol and polyvinylacetate.  The treatment is preferably effected at room temperature, e.g. 20 DEG C., followed by drying at, e.g., 60-100 DEG C.  Examples relate to the treatment of a polyester fabric and polyproylene fibres.
Patent GB-436817-A (GB)
Title: Synchronised talking picture system
IPC: G03B31/00
Filed: 1934-08-20
Abstract: 436,817. Kinematograph apparatus. GUMBINER, H. L., 802, South Broadway, Los Angeles, U.S.A. Aug. 20, 1934, No. 24016. Convention date, Aug. 22, 1933. [Class 97 (i)] [See also Group XXXVIII] Kinematograph cameras or projectors, operated synchronously with sound recording or reproducing apparatus by a motor M and a synchronizing system, in such manner that the motor may drive the camera or projector, but the camera &c., which is normally driven by a spring motor 22, may not drive the controlling motor, include a push-button release 49, Fig. 8, for the spring motor, which may be held depressed by a spring clip' 59 rotatably mounted on a cylindrical part of the casing. Details of a known type of mechanism to which the spring clips may be applied are described in the Specification. 436,817.
Patent GB-757161-A (GB)
Title: Improvements in information handling apparatus
IPC: G11C19/04
Filed: 1954-08-20
Abstract: 757,161. Circuits employing bi-stable magnetic elements. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 20, 1954 [Aug. 25, 1953], No. 24271/54. Class 40 (4). [Also in Group XIX] In magnetic information storage apparatus, a transfer circuit includes gating means employing a fixed bias potential. The output coil 8 of a saturable magnetic core 1 is connected in series with the input coil 9 of a similar core 2, a diode 15 and a bias potential source 10 which is just sufficient to balance out a pulse produced in the coil 8 when the core 1 is restored from a " 1 " state to a " 0 " state by the application of a pulse to a coil 7. However, a control pulse applied at the same time to a pulse transformer 11 through a pentode 13 reinforces the pulse produced in the coil 8 and the coil 9 is energized to reverse the state of the core 2. If the bias potential is halved and the effect of the pulse transformer reversed, the control pulse applied to the pentode will inhibit the transfer from the core 1 to the core 2. Transfers may be effected selectively to two or more cores each associated with a gate circuit as described. The pulse transformer may be replaced by means for switching in an additional source of potential.
Patent GB-646621-A (GB)
Title: Improvements to electrical motors and generators
IPC: H02K25/00
Filed: 1948-09-17
Abstract: 646,621. Dynamo - electric machines. BARRETT, J. Sept. 17, 1948, No. 24389. [Class 35] In a dynamo - electric machine having salient poles C, D and G, H on stator and rotor respectively, the working flux returns along a path parallel to the shaft through an air-gap J between a rotor hub I and a stator bearing- boss A. It is stated that the machine may operate using commutators and sliprings, may be divided into several spheres of influence and may supply several circuits at once. The axial air-gap between the stator and rotor bosses is stated to have the effect of doubling the pole-number of the machine.
Patent GB-334358-A (GB)
Title: Improvements in agricultural seed drills
IPC: A01C7/18
Filed: 1929-08-09
Abstract: 334,358. Whittome, W. V. Aug. 9, 1929. Seed drills.-A rotary seed drill comprises an inner drum containing a seed receptacle and connected to an outer rim by hollow spokes through which the seed is delivered. The inner drum 14, Fig. 2, rotates on a stub shaft 6 pivotally connected by arms 9 to a coulter bar 4. Seed passes from a seed box 1, Fig. 1. through a flexible pipe 24 to a funnel 23, with the bottom opening of which tubular spokes 16 register successively as the drum rotates. The spokes project through the outer rim 17 or the rim is formed with projections 19 which correspond to the spokes, and the projections 19 or the outer ends of the spokes are fitted with pivoted valves, which open automatically to allow the passage of seed into the hollows which the projections make in the ground by contact therewith. The projections 19 are curved rearwardly to facilitate delivery of the seed. The closing member of each valve mav be formed as shown in Fig. 4 with a head 31, adapted to close the aperture in the projection 19, and a tail piece 32,the parts being so weighted that the valve is normally closed but is opened by contact of the tail piece with the ground. Reference is made to an alternative construction in which the valves comprise shutters operated by connecting rods and a cam oil the shaft 6. Fig. 1 shows an arrangement with four drills which can be adjusted transversely on the bar 4.
Patent GB-851736-A (GB)
Title: Improvements in or relating to sheet metal heat exchangers such as radiators for central heating or for cooling transformers
IPC: B21D53/04
Filed: 1957-08-01
Abstract: 851,736. Radiators for heating buildings or cooling liquids in bulk. BINDER, H. G. Aug. 1, 1957, No. 24408/57. Classes 64(2) and 64(3)  For central heating or for cooling the coolant of transiformers or rectifiers, a radiator has a number of sheet metal sections each comprising two embossed half-sections a, b with at least one metal plate f between them. The sections may interconnect separately-formed headers, Fig. 13 (not shown), or they may have bosses g for interconnection so that a sectional radiator is formed. The plates f may be narrower than the half-sections a, b, Fig. 8 (not shown), or they may be as wide as these so that their edges are secured between edge-flanges d of the halfsections as in Fig. 7 where two embossed plates f are shown forming extra fluid channels. Openings i in the plates f may be formed at the bottom only, as in Fig. 9. Ribs c are embossed on the half sections to form channels e and they may be secured to the plates. The sheets may be joined by galvanizing or tinning, by welding if steel is used or brazing or soldering if copper or brass are used. A radiator may be connected in a raised position to a transformer tank, Fig. 14 (not shown), so that the coolant air or oil circulates thermo-siphonically.
Patent GB-1344211-A (GB)
Title: Electro-optical display device
IPC: G02F1/1335
Filed: 1972-05-24
Abstract: 1344211 Liquid crystal compositions SUWA SEIKOSHA KK 24 May 1972 [15 June 1971] 24499/72 Heading C4X [Also in Division H4] A nematic liquid crystal composition suitable for use in an electrically controlled light scattering device (see Divisions H3-H5) comprises at least two nematic compounds which are palkylazobenzenes, substituted in the p<SP>1</SP> position by an alkoxy, acyloxy or alkoxycarbonyloxy group.
Patent GB-457181-A (GB)
Title: Improvements in or relating to the production of water gas
IPC: C10B19/00
Filed: 1935-09-04
Abstract: 457,181. Water gas generation. NON- POISONOUS GAS HOLDING CO., Ltd., Vaduz, Liechtenstein. Sept. 4, 1935, No. 24681. Convention date, Aug. 9. [Class 55 (i)] An electric current is employed at intervals only, preferably at the times of low current requirement, for providing the heat necessary for carrying out the water gas reaction, the temperature of which is kept below 1000‹ C. with the aid of the electric current so that the formation of clinker is avoided. During the intervals, the producer is at a standstill, but is so efficiently insulated that practically no fall in temperature occurs, and thus acts as an energy accumulator. The temperature is maintained between 600 and 800‹ C. so that two to five volumes of hydrogen to one volume of carbon monoxide are produced. The conductivity of the fuel is increased by the addition of alkalies such as potassium hydroxide, or iron compounds such as ferric hydroxide which catalytically accelerate the water gas reaction. These additions pass into the ash which may be mixed with a fresh charge, or the additions may be removed from the ash by extraction for re-use.
Patent GB-390528-A (GB)
Title: Improvements in supporting surfaces for aircraft
IPC: B64C27/02
Filed: 1931-09-03
Abstract: 390,528. Aircraft supported by rotors. BINKS, H. K., Government Road, Nairobi, Kenya. Sept. 3, 1931, No. 24796. [Classes 4 and 114.] For supporting an aircraft alone or in conjunction with the usual lifting surfaces, two or more tubular members are mounted on a hub and are rotated by the wind about an axis perpendicular to a plane containing their longitudinal axes about which the individual tubular members also revolve. A device is described comprising four tubular members 5 mounted on spiders rotating about rods 23 connected to members 7 ball jointed to a hub 2 capable of rotating about a vertical shaft 1 between springs 14, 15. The members 7 can also tilt within the limits of sockets 13. At starting, the members 5 rest on the edge 20 of a dished member 19 to effect the rotation of the members 5 as the hub 2 revolves. Air is then drawn through the tubular members to impinge on inclined blades at their outer ends to maintain their rotation after they have risen clear of the member 19. The air issuing from the ends of the members 5 is downwardly deflected by cowls 26, Fig. 4, prevented from rotating by ties connecting each cowl to the adjacent ones. A monoplane is described having one such rotor beneath each wing.
Patent GB-533653-A (GB)
Title: Device for the hydraulic control of the blades of screw propellers
IPC: B64C11/42
Filed: 1939-08-30
Abstract: 533,653. Screw propellers; hydraulic presses. ESCHER WYSS MASCHINENFABRIKEN AKT.- GES. Aug. 30, 1939, No. 24876. Convention date, Nov. 30, 1938. Addition to 496,022. [Class 114] [Also in Group XXIX] In a variable pitch screw propeller as described in the parent Specification, the cylinder 1, Fig. 1, for varying the angle of the blades, is provided with a steep pitch screw thread 28 engaging a companion thread 30 on a ring 29 mounted to rotate on the fixed piston 6 of the cylinder 1 as the cylinder is moved by the fluid pressure, but adapted to be locked against rotation, and thus lock the cylinder, when the fluid pressure falls below a certain minimum value, by a spring actuated locking toothed ring 18 moved into engagement with internal teeth 33 on the ring 29. The piston 6 is provided with a number of bores 9 arranged around the piston alternating with bores 10. The bores 9 contain pistons 11 grooved to embrace the ring 18 and the bores 10 contain spring pressed sleeves 20, 21 engaging opposite sides of the ring 18, the inward movement of the sleeves being limited by stops 23, 25 in the bores. The ends of the bores 9 are connected to fluid supply and exhaust passages 3, 4 in the walls of the central tube 2 and normally the parts are in the central and locking position shown. Upon admission of pressure fluid to one end of the bores 9, the pistons 11 are actuated to move the ring 18 out of mesh with the ring 29 and thereafter allow the passage of fluid to one end of the cylinder 1 through ports 16' or 17<1>, this movement of the pistons 11 taking place against the union of the spring pressed sleeves 20 or 21. After adjustment of the blades, the fluid supply is cut off and the parts are again returned by the spring pressure to locking position. In another form, Fig. 3, the piston is provided with an internal ring 40 having a number of bores 41, 42 opening to opposite sides of the ring. The bores 41, 42 contain springs 43, 44 respectively which normally hold the ring 40 so that external teeth 51 thereon lock the ring 50 which corresponds to the ring 29 of Fig. 1. Upon admission of pressure fluid from port 54 to the lower side of the ring 40, the ring is raised against the action of the springs 44 to release the ring 50 and allow the pressure fluid to pass through ports 59 to the lower side of the piston to move the cylinder 49 downwardly. The upper side of the piston exhausts through ports 61, bores 63 in the ring 40 and port 55. By applying pressure through the port 55, the cylinder is moved in the upward direction.