baber/WOPTO huggingface dataset:
Patent GB-640910-A (GB)
Title: Improvements in or relating to apparatus for the acceleration of electrons
IPC: H05H11/02
Filed: 1946-10-15
Abstract: 640,910. Magnetic induction accelerators. PHILIPS LAMPS, Ltd. Oct. 15, 1946, No. 30703. Convention date, Oct. 18, 1945. [Class 39 (i)] In magnetic induction acceleration apparatus in which the electrons-follow a stable annular path during most of each period during which they are being accelerated, the accelerating and guiding fields are produced by air-core coils 1, 2, 3, energized by the damped high-frequency oscillation of a condenser discharge. The condenser 4 discharges periodically through a spark-gap 5 (as shown), or through a gas-filled discharge tube with a glow or arc discharge. The coil 1 generates part of the accelerating field and the coils 2, 3 generate the guiding field and the remainder of the accelerating field; the current in the coil 1 lags in phase with respect to the current in the coils 2, 3 so that the electron ring can be burst at the required instants. The accelerating field lasts for a quarter period of the condenser oscillation. The electrons are collected by a target 12 from which hard X-rays are emitted. Ferromagnetic material may be introduced in small quantities to adjust the magnetic field distribution. Specifications 466,836 and 520,820 are referred to.
Patent GB-867406-A (GB)
Title: Improvements in or relating to miller integrator feedback circuit arrangements
Inventor: JULIAN JOHN DERTAD
IPC: H03K4/20
Filed: 1958-09-25
Abstract: 867,406. Valve pulse shaping circuits. MARCONI INSTRUMENTS Ltd. May 26, 1959 [Sept. 25, 1958], No. 30735/58. Class 40(6) In a Miller feedback circuit, the anodecathode path of the valve 1, Fig. 2, is connected in series with a resistor 3 and the anode-cathode path of a second valve 7, a control electrode of which is controlled in correspondence with the anode potential of the Miller valve, the resistor and the additional valve constituting a constant current circuit. As shown in Fig. 2, the valve 7 is a triode, and the control electrode, which is the grid, is connected via a battery 8 directly to the anode of valve 1. A switch 5 is shown as a triggering means, although in normal practice a triggering pulse would be used. In further embodiments, the Miller capacitor may be connected via a cathode follower Fig. 3 (not shown) and additionally the source of potential 8 may be replaced by a capacity shunted neon Fig. 4 (not shown). In the circuit shown in Fig. 5, the constant current valve is a pentode 17 with the potential of both screen and control grids controlled by the anode potential of valve 1. The screen grid is connected to one side of a capacity shunted neon 12 whose other electrode is connected to a cathode follower 13, and the control grid potential is derived from another capacity shunted neon 11. The Miller capacitor 2 is connected through a cathode follower 110 across whose load the output is taken from the terminal 9. The circuits described are of the "voltage run-down" type, but may be modified for "voltage run-up".
Patent GB-780639-A (GB)
Title: Improvements in or relating to presses for the production of printing blocks and thelike from thermoplastic materials
IPC: B41C3/06
Filed: 1955-10-27
Abstract: 780,639. Printing surfaces. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.- GES. Oct. 27, 1955 [Oct. 30, 1954; Nov. 16, 1954]. No. 30820/55. Class 100(2) A press for the production of printing matrices and blocks from thermoplastic starting material is provided with a heatable work table which adjoins a lower platen and is arranged to receive the matrix or block material, and a heatable cover which is arranged in co-operation with the work table to perform a preliminary pressing operation on the material received on the table. The upper and lower pressure platens 5, 4 having heating elements 13 and cooling bores 14 are carried by a support 1. Adjacent the lower platen are work tables 8, 9, and a sliding plate 10, displaceable between the tables 8, 9 and platen 4, serves to receive the mould 11 and plastic material 12. The work table 8 is provided with heating elements 15 and cooling devices 37. Pivoted at 18 is a cover 16 also provided with heating elements 16 and cooling devices 36 and which is pressed on to the work 12 by means of a spindle 19 screw-threaded through clamp 21 pivoted at 22. In a modification (Fig. 2, not shown) the cover 16 may be counterbalanced and pressure applied thereto by co-operation of a hook member secured sheets with a hook member secured to the table 8, the hook members being pivoted on lever operated eccentric bearings. In operation the plastic material 12 is heated between the cover 16 and table 8 and pressure is applied by means of the spindle 19, the pressure being increased at short intervals of time. When a sufficient degree of plasticity is reached the spindle 19 is locked, the clamp 21 swung downwardly, the cover 16 hinged upwardly and the work on the plate 10 is pushed between the platens 4, 5 and subjected to high pressure and cooling. The cooling device 36, 37 are provided in cases where complete formation of the block by employing high temperature and pressure between the platens 4 and 5 is desirable but where cooling is required to take place at a lower pressure.
Patent GB-518805-A (GB)
Title: Improved tractor wheel attachment for prevention of wheel spin
IPC: B60C27/04
Filed: 1938-10-26
Abstract: 518,805. Vehicle wheels. BOWER, W., and BALL, L. G. Oct. 26, 1938, No. 30907. [Class 144 (i)] A non-slip device for attachment to the side of a tractor &c. wheel g comprises a rim a secured to the wheel by bolts k and formed with bosses b in which angularly and radiallyadjustable spokes c with bladed outer ends n are secured by set-screws d. Driving-lugs e on the rim a engage recesses f on the wheel.
Patent GB-189768-A (GB)
Title: Improvements in separable fasteners
IPC: F16B21/06
Filed: 1922-11-11
Abstract: 189,768. Carr Fastener Co., (Assignees of Carr, F. S.). Dec. 2, 1921, [Convention date]. Press-button fasteners.-The socket which comprises a casing 15 containing a spring 16 retained by a plate 18 is secured to a curtain or other fabric 10 by prongs which project from the walls of the casing and are passed through the fabric 10 and through slots 14, Fig. 4, in a clench plate 13 located in a cover plate 12. The prongs are clenched by the portions of metal 14<1> bent up from the slots 14 towards the cover plate which reinforces those portions. One end of the spring is bent to intersect the top of the stud-receiving opening. It engages a neck 7 on the stud formed between the head 6 and a short shank 9 and presses the stud against a fixed jaw 21 formed on the plate 18 and inclined inwardly towards the stud, an abrupt shoulder 8 between the head 6 and neck 7 resting against the jaw. To release the parts the socket is tipped relatively to the stud by pulling on the bottom of the socket which fulcrums about the spring as the shoulder 8 rides up the incline of the jaw 21 until the socket and stud are free to separate. The stud-receiving opening is elongated and allows tipping in one direction only.
Patent GB-1498575-A (GB)
Title: Baling machine
IPC: A01F15/07
Filed: 1976-07-26
Abstract: 1498575 Roll balers DEERE & CO 26 July 1976 [20 Aug 1975] 31038/76 Heading A1F A machine for forming cylindrical bales of hay by rolling the hay along the ground has a pick-up drum 36 at the rear of the machine and belts 42 trained around the drum 36 and around rollers 50, 52, 60, 48, 46. The lower run of the belt between drum 36 and roller 50 is initially at 20‹ to the ground. As a bale begins to form the lower belt run contacts a roller 44, and thereafter follows an increasingly concave path between the rollers 44, 50. The roller 44 thus maintains the bale out of contact with the pick-up mechanism. Roller 60 is a spring-biassed jockey roll permitting extrusion of the lower run. The pick-up mechanism and rollers 44, 48, 46 are carried by a gate 22 pivoted at 28 to the machine frame; when the bale is fully formed the gate is opened by hydraulic jacks to discharge it from the machine. The roller 50 is driven by chain and belt gearing 64, 66 from ground-driven wheels 12 of the machine so as to drive the belts' lower run forwardly and the pick-up drum 36 in the same sense.
Patent GB-914895-A (GB)
Title: Improvements in or relating to suspensions of beryllia
Inventor: HOLLAND IVOR JAMES
IPC: C04B35/08
Filed: 1960-09-09
Abstract: A suspension of beryllia suitable for slip casting, comprises 60% by dry weight of a first suspension containing beryllia produced by calcining beryllium hydroxide at a temperature of 1650 DEG -1700 DEG C., followed by milling with steel balls and successive leaching and washing operations to remove iron contamination and 40% of a second suspension containing beryllia produced by calcining beryllium hydroxide at 950 DEG -1000 DEG C. followed by similar milling, leaching and washing operations.  The pH of the final suspension is preferably 3,5 and the specific gravity of the final suspension is adjusted to 1,4.
Patent GB-371329-A (GB)
Title: Improvements in and relating to methods of recording and/or reproducing sounds
IPC: G11B11/00
Filed: 1930-10-17
Abstract: 371,329. Sound records; reproducing apparatus. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Compagnie Francaise pour l'Exploitation des ProcÚdÚs Thomson-Houston ; 173, Boulevard Haussmann, Paris.) Oct. 17, 1930, No. 31208. Convention date, Oct. 17, 1929. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] Relates to the use of electromagnetic or electrostatic processes for reproducing sound from records which have been obtained by optical methods. The necessary variations in the magnetic and dielectric properties of the record may be obtained by employing as lightsensitive material an agent, such as ferric bromide or ferric chloride. The records may be carried on a support of paper, Cellophane, cellulose, &c. Another suitable form of record is obtained on a paper or other support by a printing process from a photographic master record, the printers' ink being provided with magnetic material in suspension. Alternatively, a negative record, produced with bichromated gelatine which is treated so that the blackened parts of the film project above the unexposed parts, is passed with a paper film between a pair of rollers. Ink containing magnetic particles in suspension is caused to penetrate between the two films so as to produce a positive copy on the paper. Instead of printing as above, metallic deposits may be obtained by chemical precipitation with the aid of suitable developers. Fig. 1 shows electromagnetic apparatus for reproducing sound from a ribbon R which is caused to pass between the knife-bladed ends of the polepieces N, S of an electromagnet M. The ribbon R is guided by nonmagnetic elements A, C, D. If desired, the principal poles N, S of the electromagnet may be arranged between two pairs of auxiliary poles N1, S1 and N2, S2, as shown in Fig. 2. For electrostatic reproduction, two wires F<1>, F<2>, Fig. 4, are sunk into the bodies of two insulating guiding elements A for the ribbon R, the wires forming a condenser which is varied in capacity by the passage of the ribbon. The surfaces of the poles N, S or of the wires F<1>, F<2> may be of concave form as shown in Fig. 5.
Patent GB-829700-A (GB)
Title: Improvements in or relating to holders for valves or other electrical devices havingprojecting terminal pins
IPC: H01R33/76
Filed: 1957-10-04
Abstract: 829,700. Holders for thermionic valves. UNITED-CARR FASTENER CORPORATION. Oct. 4, 1957 [Nov. 21, 1956], No. 31217/57. Class 38 (1). A holder for a valve or similar device comprises a solid insulating body 11 on which is mounted a plurality of contacts 12 having slotted projecting terminal pins comprising two resilient legs 22, 23 with inclined edges 24, 27, 28 to facilitate the entry and subsequent location in printed circuit conductors 13 to which they are soldered, on one or both sides of a panel 10. The contacts are secured to the body 11 by any suitable means, the body having a central locating hole and earthing contact. The edges 27 space the holder above the panel 10 which may be of any thickness. The slot 21 may be parallel or outwardly divergent.
Patent GB-654610-A (GB)
Title: Improvements relating to oil coolers and the like
IPC: F28F13/12
Filed: 1948-12-03
Abstract: 654,610. Tubular heat exchange elements. SERCK RADIATORS, Ltd., ROBSON, F., and MONTGOMERIE, G. A. Dec. 3, 1948, No. 31329. [Class 64(iii)] In a cooler for oil or like viscous liquids comprising a plurality of tubes through which the viscous liquid flows and over which a coolant circulates, some or all of the tubes a are each provided with a longitudinal strip g extending diametrically across and supported centrally by the tube and having central deflector pieces h pressed therefrom in opposite directions to deflect the viscous liquid repeatedly from the centre to the inner surface as it flows through the tube. The deflector pieces may extend at right angles or at any other suitable angle to the strip g as shown in Fig. 1. Specification 1260/11, [Class 64(ii)], is referred to.
Patent GB-1123038-A (GB)
Title: Circuit arrangement for electronic tuning of an oscillator circuit
IPC: H03J3/18
Filed: 1967-07-07
Abstract: 1,123,038. Converting. INTERNATIONAL STANDARD ELECTRIC CORP. 7 July, 1967 [14 July, 1966], No. 31331/67. Heading H2F. [Also in Division H3] A radio receiver comprising an oscillator (1, Fig. 1, not shown) supplied from a source U B , e.g. a car battery, and electrically tuned by varying the bias across a varactor diode (4), the bias being derived from a source U A  which in turn is derived from U B , is characterized in that the voltage of the source U A  varies with variation of U B  in such a way that the changed bias on the varactor diode compensates for the frequency change that would otherwise occur due to variation of U B . In Fig. 3, the output of a blocking oscillator 20 is rectified and stabilized by a Zener diode 28; a part of the voltage U B  derived from the resistance chain 29, 30 is combined with the stabilized voltage across diode 28 to provide the required source U A . In a modified arrangement, Fig. 4 (not shown), the resistances 29 and 30 are connected across the capacitor 26 to provide the unstabilized part of the output U A . In a further arrangement, Fig. 5 (not shown), the transformer 24 includes a second secondary winding, the output of which is rectified to provide the unstabilized part of U A .
Patent GB-899249-A (GB)
Title: Hydrolyzed polymers of alkyl methacrylates and methods of producing them
IPC: C08F8/00
Filed: 1958-10-01
Abstract: Particulate polymers of alkyl methacrylates suspended in a medium which contains an organic liquid, an alkali metal hydroxide and water in an amount not exceeding one mole per hydrolysable unit in the starting polymer, are hydrolysed, if necessary at an elevated temperature below that at which appreciable degration of the polymer occurs, said medium being such as to swell the starting polymer without appreciably swelling or dissolving the hydrolysed polymer product.  The organic liquid may be isopropanol or mixtures thereof with ethylene glycol.  The alkali metal hydroxide may be sodium, potassium or lithium hydroxide.  The polymer may be a homopolymer of methyl, ethyl or butyl methacrylate or a copolymer of said methacrylates with acrylonitrile, methacrylonitrile, a vinyl ester such as vinyl acetate or an acrylic ester such as ethyl acrylate. The process may be applied to non-crystallizable polymers or to isotactic or syndiotactic polymers.  Hydrolysis is said to be extremely rapid in the case of syndiotactic polymers.  The hydrolysed products may be recovered as alkali metal salts by filtering the hydrolysis medium, or in the acid form by acidifying an aqueous solution of said salts.  The acid forms may be converted to amine salts by treating with water-soluble amines, e.g. diethylamine, monoethylamine, triethylamine, morpholine, piperidine, triethanolamine, diethanolamine and monoethanolamine, or to insoluble salts of polyvalent metals, e.g. calcium, magnesium, zinc, aluminium, and barium.  Examples describe the hydrolysis with isopropanol, water and sodium hydroxide of (1, 2 and 7) polymethyl methacrylate, (3) a methyl methacrylate-ethylacrylate copolymer, (4) a methyl methacrylate-acrylonitrile copolymer and (5) polyethyl and poly-n-butyl methacrylates; and in a medium also containing ethylene glycol (6) a methyl methacrylate-ethylacrylate copolymer.  The products may be used for thickening aqueous compositions.
Patent GB-1148327-A (GB)
Title: Improvements in or relating to circuit arrangements for controlling the level of a video signal
IPC: H04N5/16
Filed: 1966-07-13
Abstract: 1,148,327. Transistor gain control circuits; line transmission systems. FERNSEH G.m.b.H. 13 July, 1966 [13 July, 1965], No. 31398/66. Headings H3T and H4R. In an arrangement for varying the level of a video signal in response to changes in an applied control voltage the control voltage is applied by way of respective resistors 3, 4 of equal value to the emitters of a pair of transistors 1, 2 which are emitter-coupled by means of resistor 5. The video signal is applied to the base of one transistor 1 and the base of the other transistor 2 is held at a constant potential; antiphased signals appearing at the collectors of the transistors are applied respectively to the bases of a further pair of transistors 24, 25 whereby there appears across a load resistor 29 in the collector circuit of one of the further transistors a signal of which the level is determined by the magnitude of the control voltage. As shown the outputs of transistors 1, 2 are balanced by giving transistor 1 a bias, via resistors 13, 14, differing from that of transistor 2, and the emitters of these transistors are also coupled together by resistor 11: capacitors 15, 16 and impedance-matching emitter-followers 19, 20 are interposed between their collectors and the bases of transistors 24, 25. The range of control may be increased by making resistor 11 variable; e.g. it may comprise a diode network biased from the variable source biasing the emitters of transistors 1, 2 (Fig. 2, not shown).
Patent GB-299731-A (GB)
Title: Improvements relating to variable inductances
IPC: H01Q7/00
Filed: 1928-10-29
Abstract: 299,731. British Thomson-Houston Co., Ltd., (Assignees of Bradbury, B.). Oct. 28, 1927, [Convention date]. Plug couplings.- Variable inductances and loop antennae comprise separate coils with the ends connected to fixed plugging contacts 7, Fig. 4, engaged by any one of several removable blocks 10, Fig. 3, the contacts of which are so interconnected that, whilst all coils are always in circuit, the inductance is varied by inserting different blocks 10. The plugs 11 on the blocks 10 are so interconnected that the coils 6 are connected in series, in parallel or in various series-parallel arrangements according to which block 10 is used.
Patent GB-339057-A (GB)
Title: Improvements in or relating to electron emitting cathodes for electric discharge devices
IPC: H01J1/26
Filed: 1929-10-16
Abstract: 339,057. Gramophone Co., Ltd., Tedham, W. F., and Ellington, F. Oct. 16. 1929. Vacuum. tubes.-In electron-emitting cathode for an electric discharge device comprises a core or layer of aluminium provided with an oxidized surface having an electron-emitting coating thereon. The electron-emitting coating may comprise caesium, barium, or other metal deposited electrolytically or otherwise upon a core of aluminium which has been coated with a layer of oxide by making it the anode in a weak solution of chromic acid. Alternatively, an electron-emitting material may be deposited upon an oxidized aluminium surface formed upon a core of either conducting or non-conducting material such as tungsten or kaolin.
Patent GB-626978-A (GB)
Title: Improvements in or relating to apparatus for cooling liquids such as milk or ice cream mix
IPC: F25D31/00
Filed: 1947-10-18
Abstract: 626,978. Milk &c. coolers. EDWARDS, L. M., and GALLONE, A. Oct. 18, 1947, No. 31489/46. [Class 64(iii)] In liquid-cooling apparatus of the kind comprising a heat-insulated cabinet 1 having a series of cooling pipes 4 connected with a cooling plant, a container 3 in close proximity to the pipes and means for distributing the liquid, e.g. milk or ice cream mix, to be cooled, so that it flows down the inside of the wall of the container, the distributing means comprise one or an odd number of hollow discs 8, 10, 14 through which flows cooling fluid and over which the milk flows radially. Milk from the supply pipe 16 flows over the convex upper surface of the first disc 14 and from its periphery on to the concave upper surface of the second disc 10 below, where it flows inwardly to a central opening 10b to be distributed on to the convex surface of the third disc 8 and so on. From the periphery of the last disc the milk flows on to the container wall. The discs are loosely fitted together and enclosed by a cover 17 having openings 17a extending throughout its depth to accommodate the cooling-liquid circulation pipes 18, 19, 20, 21.
Patent GB-1392158-A (GB)
Title: Textile spindle
IPC: D01H7/12
Filed: 1973-07-02
Abstract: 1392158 Damped spindle bearings SPINDEL - MOTOREN - UND MACHINENFABRIK AG 2 July 1973 [10 July 1972] 31531/73 Heading DID A spindle mounting comprises a shaft 2 supported by two bearings 3 and 4 in a housing 1; between the bearings a dampening mechanism is provided which acts on the shaft in its region of maximum oscillation under an unbalanced load. This dampening mechanism comprises a bearing sleeve 13 within a spiral spring 14. The spring 14 is retained in the housing 1 by a ring 16 which has a funnel portion to aid insertion of the shaft 2. In Fig. 2 (not shown) the dampening mechanism is provided lower down the shaft on a reduced diameter portion. The housing 1 may be filled with oil.
Patent GB-340600-A (GB)
Title: Improvements in or relating to calculating apparatus
IPC: G06G1/00
Filed: 1925-12-14
Abstract: 340,600. Logarithmic calculators. JONES, J. W., Royal Air Force, Martlesham Heath, Woodbridge, Suffolk. Dec. 14, 1925, No. 31561. [Class 106 (i).] A device to enable the height of an aircraft to be determined from the ground speed and from the time taken for an object on the ground to pass from one foresight to another, comprises two coaxial discs bearing the necessary scales, and an index arm A. The lower disc has a scale H of heights and a scale Vg of ground speeds. The upper disc is graduated at t in terms of time and is milled at 2x to facilitate rotation by hand. The scales are related by the formula H = k. Vg. t wherein k is the vertical distance of the backsight from the foresights divided by the horizontal distance between the latter. The factor Vg may be obtained by the use of a bomb sight as described in Specification 177,549. The time (t) is taken with the foresights orientated in accordance with the ground speed vector. To use the device the upper disc is set with the arrow a opposite the ground speed value and the index arm is then turned to the noted time graduation whereupon the height may be read off at the arm.