baber/WOPTO huggingface dataset:
Patent GB-908590-A (GB)
Title: Charged particle gun
IPC: H01J3/02
Filed: 1961-02-08
Abstract: 908,590. Electron beam apparatus; ion sources. HUGHES AIRCRAFT CO. Feb. 8, 1961 [March 7, 1960], No. 4751/61. Class 39 (1). A high perveance electron or ion, e.g. proton, gun, particularly for use in travelling-wave tubes, has a concave cathode surface 58, Fig. 5, whose curvature decreases from the centre to the edge. The surface may approach a spherical form at its edge, as shown, or at its centre. The gun includes a focusing electrode 68 and a ferromagnetic anode 70 where the beam enters an axial magnetic field in Brillouin condition. In Fig. 11 a hollow cylindrical gun is shown with an annular cathode 106, focusing electrode 110 and accelerating electrode 112. U.S.A. Specification 2,811,667 is referred to.
Patent GB-122546-A (GB)
Title: An Improved Artificial Stone.
Inventor: AFFORD ALFRED
IPC: C04B28/04
Filed: 1918-03-18
Abstract: 122,546. Afford, A. March 18, 1918. Concretes, cement.-Artificial stone is made by mixing together in a wet state broken freestone, such as Bath or Weldon stone, and Portland cement, the mixture being moulded into blocks &c. A coating of cement may be applied to the blocks, which is subsequently rubbed down.
Patent GB-1171952-A (GB)
Title: Method of Treating Household Articles
IPC: D06M13/507
Filed: 1967-02-01
Abstract: 1,171,952. Polyperfluoroacrylate compositions. COLGATE-PALMOLIVE CO. 1 Feb., 1967 [2 March, 1966], No. 4823/67. Heading C3P. [Also in Division D1] A water-proofing composition for treating household articles during a laundry rinse, comprises a perfluorocarbon emulsion polymer and a quaternary ammonium compound. An amine oxide is also present (as stabilizer) when the emulsion polymer is anionic. The emulsion polymer may be of 1H, 1H, 7H docecafluoroheptyl methacrylate and may be anionic or cationic. The quaternary ammonium compound may be n-methyl di-(hydroxyisopropyl) hydrogenated tallow ammonium methyl sulphate (Propoquad HT 12). The amine oxide may be lauryl dimethyl amine oxide and may be employed in a quantity of 1-4 times that of the quaternary ammonium compound.
Patent GB-666888-A (GB)
Title: Automatic lathe
IPC: B23Q5/34
Filed: 1949-02-22
Abstract: 666,888. Lathe details. BECHLER, A. Feb. 22, 1949 [Feb. 25; 1948], No. 4833/49. Class 83 (iii). The cam-operated lever tool-rest 7 in an automatic-lathe is mounted on a conical pivot 9 and the bearing surface of the lever or pivot formed with a recess 12 so that the lever bears on the pivot under the load of its own weight and of a spring 16 along two generators 13 limiting the recess, the angles, measured in a vertical plane parallel to the axis of the pivot, between the generators 13 and the horizontal and between the tangent to the cone at any point on the generators and the horizontal measured in a vertical plane perpendicular to the axis of the pivot being greater than the angle of friction of an oil film with the materials of the lever and pivot. Nuts are provided on the threaded end of the shank of the pivot to hold the lever 7 against the frame 1 of the machine which is provided with a sleeve 2 for guiding the workpiece 3. A tool 4 is carried by a slide 6 on the lever 7 and rocked to engage the workpiece by a cam 15.
Patent GB-401932-A (GB)
Title: Improvements in or relating to apparatus for the electrical precipitation of suspended matter from gaseous fluids
IPC: B03C3/06
Filed: 1933-02-16
Abstract: <PICT:0401932/III/1> <PICT:0401932/III/2> <PICT:0401932/III/3> In an electrical precipitator having a chamber containing a plurality of concentric collecting electrodes, preferably cylindrical, extending therethrough and co-operating with a series of discharge electrodes lying in a plane or planes concentric to and between said collecting electrodes, means are provided for passing the gas to be treated through the chamber in a spiral path.  In the form of construction shown in Fig. 2, which is a cross-section of the precipitation chamber, the collecting electrodes consist of a number of concentric cylinders 10 and 12, supported at their bases by frame members 9 secured to a central cylinder 8.  The whole chamber is supported on pillars at the ends of the frame members 9.  The discharge electrodes 17 consist of wires depending from three concentric rings 16 which are secured to cross-members 15 which are in turn supported on insulators 14 in separate chambers 13 (Fig. 3).  The lower ends of the discharge electrodes are attached to similar concentric rings 18 which are secured to a positioning member supported on insulators 20. As shown in Fig. 4, the lower ends of the discharge electrodes which pass near to the members 9 are spaced apart to avoid arcing.  The gas is passed in at the top of the treater through the inlet 1 terminating in a cruciform head, each arm of which contains three nozzles 24 which are directed angularly towards the upper ends of the three concentric treater compartments, the gas thus passing in a helical path through the treater and ensuring that all of the gas stream flows past areas of high field intensity.
Patent GB-1006641-A (GB)
Title: Improvements in and relating to devices for determining statistic parameters of signals
IPC: G06F17/15
Filed: 1964-02-05
Abstract: 1,006,641. Electric digital calculators. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 5, 1964 [Feb. 8, 1963], No. 4852/64. Heading G4A. [Also in Division G1] In an arrangement for computing a statistical parameter such as auto- or cross-correlation of one or more input variables, each input variable is added to an auxiliary function, to produce a sum-function, the auxiliary functions being mutually statistically independent and being such that all levels occurring therein occur with the same frequency; scanning circuits are provided to produce series of equi-valued pulses representing the sign of the sum-functions; and these pulses are applied to a logical circuit which computes the required statistical parameter. The arrangement is characterized in that the auxiliary functions are composed of linear combinations of Rademacher functions, a Rademacher function r l (t), i = 1, 2, 3 ... being defined as a periodic function of t with period T/2<SP>i</SP> which has in the interval 0 < t < T/2<SP>i+1</SP> the value + 1 and in the interval T/2<SP>i+1</SP> < t < T/2<SP>i</SP> the value - 1. Fig. 2 shows the form of such a linear combination of Rademacher functions. A circuit for computing the auto-correlation function of an input function x(t) is shown in Fig. 4, the input function being applied to addition circuits A 1 , A 2  where it is added to two different statistically independent functions y 1  (t), Y 2  (t) each composed of a linear combination of Rademacher functions. The outputs z 1  (t), z 2  (t) of the adders are fed to limiters B 1 , B 2  which produce outputs representing the sign of the functions z 1 , z 2 , the sign functions being applied to scanners C 1 , C 2  which produce pulse trains representing the sign functions. The respective pulse trains are supplied to a logical circuit R, the first train after delay in a shift register DL. The circuit R (not described in detail) comprises counters and other digital circuits and produces the required output auto-correlation function. The arrangement may be applied to computing the mean value of a variable or for computing the cross-correlation of a plurality of variables.
Patent GB-675046-A (GB)
Title: Haymakers
Inventor: HALLEWELL GEORGE
IPC: A01D78/00
Filed: 1950-02-24
Abstract: 675,046. Hay-making. BLACKSTONE & CO., Ltd. Sept. 12, 1950 [Feb. 24, 1950], No. 4864/50. Class 6(iii) A hay-making machine comprises a rake provided with discs 10, 11 carrying tine bars 12 wherein the rake machanism is driven from the tractor power take-off through a reduction gear-box 16 and change-speed and reverse gear-box (not shown) and the machine is connected to tractor hydraulic lifting links 5, 6. The operating height of the machine is adjusted by means of castor wheels 20, 22 independently adjusted by handles 21, 25. One or more gear ratios may be provided for side raking and swath turning and a higher speed reverse drive for tedding. Specifications 615,845 and 675,045 are referred to.
Patent GB-365368-A (GB)
Title: Apparatus for making visible the supply of liquid lubricants under pressure through pipes
IPC: F04C15/00
Filed: 1931-02-16
Abstract: 365,368. Rotary meters. FRISCH, A., 4, Giessh³belstrasse, Zurich, Switzerland. Feb. 16, 1931, No. 4918. [Class 110 (ii).] Apparatus for visually indicating flow of lubricant comprises a chamber 9 formed in a casing 1 and closed by a glass cover 4 held in place by a ring 6, the chamber containing meshing toothed wheels 2, 2<1> which are caused to rotate by the flow of lubricant through inlet and outlet conduits 12, 13.
Patent GB-1005520-A (GB)
Title: An electrically operated extensible element
Inventor: CRUZAN ROBERT COY
IPC: H02K7/06
Filed: 1964-02-05
Abstract: 1,005,520. Extensible actuators. NORTH AMERICAN AVIATION Inc. Feb. 5, 1964, No. 4962/64. Heading B8J. In Fig. 2, an extensible element or actuator suitable for a helicopter control system comprises an electric motor 34 which rotates a nut 40 engaged with a screw-threaded portion of a rod 44. The nut 40, mounted in bearings 42, is prevented from moving longitudinally, and longitudinal movement of the rod 44 is limited, by a bolt 52 which passes through a slot 50 in the rod. Rubber members 49 cushion the stopping action of the bolt 52 and the stalling of the motor 34. For indicating the longitudinal position of the rod 44 a transducer 54 comprises transformer windings 56 attached to the case of the actuator and an armature 58 attached to the rod 44. With the armature in the null position no output voltage is produced across leads L 1 , L 2  in response to an A.C. signal from a source 59. If the armature is displaced, an output voltage of the phase corresponding to the direction of displacement of the armature is produced. The output voltage may be used as part of a servo-feedback loop to interrupt the current to the motor when it is stalled or to interrupt the operation of the actuator when the helicopter's movement has been properly compensated. In a modification, Fig. 3, a high-speed motor 60 drives a nut 40A via a gear box 62, a pinion 64 and a gear ring 66 with internal teeth. Axial movement of the rod 44A is limited by a bolt 70 fixed to the rod, the ends of the bolt fitting into recesses 74 and carrying resilient " 0 " rings 72. A transducer armature 58A is axially adjustable, e.g. for nulling purposes, by providing a threaded portion 78B which engages a mating thread portion in the centre bore of the rod 44A. In Fig. 1, an actuator 14 is mechanically linked to a pilot's control stick 10 and to hydraulic booster 18. Hydraulic fluid lines 20 move elements which control the flight of the helicopter. Normally, movement of the stick 10 by the pilot controls the desired units of the helicopter. If minor changes take place in the attitude, altitude or other flight conditions of the helicopter, electrical sensing signals applied to the actuator through wires 36 cause it to lengthen or shorten. At the same time the pilot or a friction device may hold the stick 10 stationary but the changed length of the actuator causes the booster 18 to compensate for the changes in the flight condition.
Patent GB-554748-A (GB)
Title: Improvements relating to the removal of iron from water
IPC: C02F1/64
Filed: 1942-04-16
Abstract: 554,748. Purifying water. PERMUTIT CO., Ltd. April 16, 1942, No. 5077. Convention date, July, 12, 1941. [Class 46] Water flowing in a by-pass connected to a main 10 is sprayed through an air space in a tank 13, or 30, so that it dissolves enough oxygen to precipitate all the iron dissolved in the water flowing through the main. As shown in Fig. 1, an orifice plate 11 is provided in the main between the pipes 15, 17 to effect the flow in the bypass. Air under pressure is supplied by a pipe 19 to the tank 13, any excess of air being released through a pipe 21 and an airrelief valve 22, containing a float-actuated valve member 23, so as to maintain a substantially constant water level in the tank. As shown in Fig. 1, the water is sprayed into an open tank 30 and returned to the main 10 by a pump 31, the water level in the tank being maintained substantially constant by a flow-actuated valve 35. A further by-pass comprising a tank 42 containing a coagulant, such as alum, may be provided to form a floc for agglomerating the precipitate. The latter is removed by settling in a tank 50 and by a sand filter 54.
Patent GB-1491523-A (GB)
Title: Door construction
IPC: E05D1/02
Filed: 1975-02-06
Abstract: 1491523 Door fastening L B YULKOW SKI 6 Feb 1975 [11 Feb 1974] 5092/75 Heading E2A  A door 2 has a pivotable element 4 thereon at its free edge engageable with a counter element 24 on the door frame to retain the door in its closed position. As shown, door 2 is hinged at 32 to a door frame 23 and carries a profile bracket 3 on its other edge. On a projection 6 of bracket 3, a rib 7 pivotally supports an engaging element 4 which is rotated about the axis of rib 7 in the direction B by handle 18 and snapped into the dotted-line position by means of overcentre spring 16 to open the door in the direction C. Pushing on handle 19 has the same effect. In Figs. 2-4 (not shown), a locking member (36) is pivoted on rib (38) of bracket 3 and biassed by spring 37 to a locking position preventing rotation of element 4. It may be pivoted about rib (38) into an unlocking position by means of a rota table cam (42, Fig. 2), a pivoted lever (45, Fig. 3) on a push button (46, Fig 4). A key-operated lock may be used to move or prevent movement of the locking member (36). The doors may be double (Fig. 5 not shown), the pivotal engaging, elements 4 having engaging parts (47, 48) and may carry pins (51, 52 Fig. 6 not shown) on their upper ends engaging grooved tracks (49, 50) in the upper door frame.
Patent GB-1175774-A (GB)
Title: Process for the Preparation of Sulphur Hexafluoride
IPC: C01B17/46
Filed: 1968-01-31
Abstract: 1,175,774. Sulphur hexafluoride. MONTE. CATINI EDISON S.p.A. 31 Jan., 1968 [1 Feb., 1967], No. 5100/68. Heading C1A. Sulphur hexafluoride is manufactured by reacting gaseous fluorine with molten sulphur flowing over the internal surfaces of vertical tubular reactors. The gaseous products so obtained may be alkaline washed, dried and passed through molecular sieves or activated carbon to absorb impurities. The purified gas is condensed and stored.
Patent GB-1021482-A (GB)
Title: Method and apparatus for producing pipes and pipe produced by this method
IPC: B29C53/82
Filed: 1964-02-06
Abstract: 1,021,482. Making pipes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Feb. 6, 1964 [Feb. 8, 1963; Dec. 23, 1963], No. 5124/64. Heading F2P. A method of producing pipes comprises closing a moving weak tube at a fixed place relative to the surroundings, filling the tube past the said place over at least a part of the path to be traversed by the tube with the filling medium to support the wall of the tube, and applying at least one coating to the outer surface of the filled portion of the tube which forms a rigid layer round the tube so that the coated tube forms a self-supporting pipe from which the filling medium can be removed. As shown, the apparatus for making the pipe 38 includes a supply reel 10 carrying a flat, flexible tubular film, e.g. of extruded polyvinyl chloride, a closing device 12 consisting of endless belts 14 and a pair of rotatable discs 17. Each disc carries bobbins 18 of glass fibre thread and has an annular hub 21 enclosing a fixed hollow ring 22 connected to a supply vessel containing an epoxy resin; the ring is formed with a slot 25 opposite which are located openings 26 in the hub. Between the discs is disposed bobbins 30 carrying glass fibre threads 31 which pass through guides 32, a bath of liquid resin and guides 34, 35. The tube is inflated with air under pressure and the fibres 20 are drawn past the holes 26, coated with resin, and laid helically on to the tube 15, the fibres 31 being disposed longitudinally of the tube. Electrical heating elements 29 cure the resin, and rotating disc knives, which may be axially displaceable, cut the pipe into desired lengths. The pipe 38 is advanced by devices comprising endless belts. Air is supplied continuously to the tube 15 and alternately through supply pipes to a pipe secured to a piston within the pipe 38. The tube 15 may 'be of a plastic, paper, fabric, " Cellophane " (Trade Mark) or rubber. In modifications: (a) a plug is placed in the forward end of the pipe 38 and connected to a flexible air supply pipe of the same length as the pipe to be produced; (b) the pipe 38 is produced in a vertical position, the filling material being water, glycerine or a solid, powdery or granular substance such as sand; (c) the tube 15 is inflated by an air duct in an extrusion head, the leading end of the tube being closed by a free piston; and (d) a slight sub-atmospheric pressure is maintained outside the tube and the filling air in the tube is at atmospheric pressure.
Patent GB-394757-A (GB)
Title: Improvements in variable gearing for bicycles and the like
IPC: B62M9/04
Filed: 1932-02-22
Abstract: 394,757. Cycle-driving transmissions. KENT, A. W., Swithland, Leicester Road, Groby, Leicestershire. Feb. 22, 1932, No. 5169. [Class 136 (ii).] In a variable-speed chain transmission for a bicycle &c. of the type in which at least one, preferably the high, gear ratio has a fixedwheel drive and the other ratio or ratios a freewheel drive, the gear change being controlled by a hand-operated lever, the actual change of gear takes place, after the hand-lever has been operated, by a trip action as the pedals pass the dead-centre position. The high gear comprises a separate chain and a sprocket 6 fixed to a ring 14, which is mounted by means of a ball bearing 15 on a member 10 rigid with the crank axle and is adapted to be clutched thereto by means of a sliding bolt 11 adapted to engage one of a series of apertures 20 in the ring 14. The bolt 11 is controlled by a spring 13 and by a lever 12, which has laterally-bent arms 28, 29 adapted on rotation of the crank axle to be selectively engaged by a disc 21 on a slidable plunger 22, which is mounted in a bracket 23 on the frame and is controlled by a spring 22A and Bowden mechanism 25. The tension of the low-gear chain is maintained by a jockey sprocket adjustably mounted on a slotted bracket or on a spring-loaded arm.
Patent GB-358845-A (GB)
Title: An apparatus for the conveying of sick or injured persons
IPC: A61G1/017
Filed: 1931-02-19
Abstract: 358,845. Ambulance stretchers. THOMAS, D., 1, Crescent Terrace, Bryn, Port Talbot, Glamorgan. Feb. 19, 1931, No. 5217. [Class 108 (i).] A foldable stretcher which is adapted for use with a patient in a lying or a reclining position comprises side bars A hinged at the centre and connected transversely by foldable bars B and a locking bar 0 which also serves as a handle when the stretcher is in the position shown in Fig. 3 for a reclining patient. The handles H and the locking bar are arranged to telescope on the main frame.
Patent GB-1166966-A (GB)
Title: Improvements in or relating to the Packaging of Cigarette Holders
Inventor: SHAW HERMAN LEONARD
IPC: B65D75/36
Filed: 1968-02-01
Abstract: 1,166,966. Packaging cigarette holders. H. L. SHAW. 1 Feb., 1968, No. 5256/68. Heading B8C. A cigarette holder 10, e.g. as disclosed in Specification 930,253 and containing impregnated fibrous material 13A, has a tearable film 20, Fig. 1, covering the mouthpiece end 11 and a plug 16 at the other end 12. A metal sleeve 13 receives the plug 16 which is formed of gasimpervious plastics material. The film 20 is formed by dipping the end 11 of the holder into a plasticizing solution. A number of holders may be packaged together in a blister pack, Fig. 1, formed by a backing sheet 30 and a shaped transparent covering 31, and the sheet 30 may have perforations (32), Fig. 3 (not shown), to facilitate tearing and to allow subsequent removal of individual holders from the pack.
Patent GB-212268-A (GB)
Title: Process for casting moulded articles from magnesia cement
IPC: B28B7/10
Filed: 1924-02-29
Abstract: 212,268. Jacobs, A. N. P. March 2,1923, [Convention date]. Processes; moulds.-Articles of magnesia cement are cast in electrolytically-deposited, internally-polished moulds preferably of silvered copper, the mould being removed from the cast article, after hardening, by sudden heating as by a blow-lamp.
Patent GB-646984-A (GB)
Title: Improvements in and connected with ingot moulds
IPC: B22D7/06
Filed: 1947-02-24
Abstract: 646,984. Moulds. DEGERFORS-JARN VERKS AKTIEBOLAG. Feb. 24, 1947, No. 5327. Convention date, May 29, 1946. [Class 83 (i)] In bottom casting ingots a mould with an integral closed top is used. This method may be used in casting killed steel. The Specification as open to inspection under Sect. 91 comprises also a bottom pour ingot mould with its top closed by a removable plug. This subjectmatter does not appear in the Specification as accepted.
Patent GB-180038-A (GB)
Title: Improved electric light fitting
IPC: F21V17/04
Filed: 1921-02-16
Abstract: 180,038. Fletcher, J. Y., and Saunders, C. W. Feb. 16, 1921. Shade-holders; globes; shades.-In electric light fittings of the indirect or semi-indirect type in which a bowl 3 is supported beneath the lamp 2 by suspension chains 4, and a second translucent bowl-shaped screen a is fitted over the lamp to prevent shadows from being cast by the chains 4, the screen a is adjustably carried on the lamp by means of a ring b having two sets of arms, of which the upstanding spring-like arms c exercise a grip on the lamp 2, while the other arms d are bent under the upper part of the screen a and serve to hold it in position. The screen a may be provided with a. frosted tubular extension or with a frosted inturned edge.
Patent GB-801154-A (GB)
Title: Liquid compositions useful as a base material for lubricating oils, lubricating grease and hydraulic liquids
Filed: 1956-02-22
Abstract: A liquid composition, suitable as the oil base of lubricating oil compositions, lubricating greases and hydraulic fluids, comprises one or more esters of di- or poly-carboxylic acids with C4-C17 alcohols and one or more hydrocarbons having a viscosity of 100-500 cs. at 50 DEG  C.  The esters may be di-esters of glutaric, adipic, azelaic, pimelic, sebacic or pinic acid with 2-ethyl-butanol, 2-ethyl-hexanol or octanol, while the hydrocarbon oils may be petroleum fractions or synthetic materials.  Greases may be prepared from the liquid composition by incorporating thickening agents such as sodium, potassium, lithium, calcium or aluminium soaps.  Additional ingredients may be incorporated in the liquid composition, particularly antioxidants (e.g. phenols or amines), dispersing agents (e.g. metal salts of organic acids), foam-inhibiting agents (e.g. silicones), anticorrosive agents (e.g. alkali metal or alkaline earth metal alkaryl sulphonates) and film-forming agents (e.g. tricresyl phosphate).  In the examples, blends of dioctyl sebacate or adipate with petroleum fractions are described.