baber/WOPTO huggingface dataset:
Patent GB-1327298-A (GB)
Title: Insulated gate-field-effect transistor with variable gain
IPC: H01L29/423
Filed: 1971-05-24
Abstract: 1327298 Semiconductor devices RCA CORPORATION 24 May 1971 [1 June 1970] 16654/71 Heading H1K In a field effect transistor the distance, along the channel, between the gate electrode and the drain region, is non-uniform along the length of the drain region. In one embodiment, Fig. 3, this is achieved by using source and drain regions 42, 44 which have parallel channeladjacent edges, and a gate electrode 48, the drain-adjacent edge of which lies at an angle to the drain region. In an alternative embodiment, Fig. 7, the gate edges are parallel to the source channel-adjacent edge, and the channel-adjacent edge of the drain region lies at an angle to the gate electrode edges. In both embodiments the gate electrode covers only a part of the channel, the length of the channel being capable of increase only by a depletion region, associated with the drain voltage, extending through the uncovered part of the channel to provide conductance. Gain is therefore dependent on drain voltage, a progressive increase in this voltage non-linearly increasing the channel current. The structure may form part of an integrated circuit.
Patent GB-373438-A (GB)
Title: Improvements in or relating to focussing devices for electric torches
IPC: F21L4/00
Filed: 1931-06-08
Abstract: 373,438. Adjusting reflectors on electrictorches. EVER READY CO. (GREAT BRITAIN), Ltd., Hercules Place, Holloway, and BEESTON, F., Iredene, Barrowell Green, Winchmore Hill, both in London. June 8, 1931, No. 16675. [Class 75 (ii).] In an electric torch in which the reflector is carried by a member slidable upon the battery containing member for focusing purposes, means are provided for locking the two members in any desired position of adjustment. In the form shown in Figs. 2 and 3, a pin 1 is mounted on a spring blade 2 riveted to the battery container 4 and projects through an opening 5 in the container and through a slot 10 in the member 8 carrying the reflector 9, the pin 1 being formed with shoulders having recesses 6 which are adapted to co-operate with protuberances 7 formed on the member 8 adjacent the sides of the slot 10. The recesses and protuberances may be replaced respectively by knife edges and corrugations. In the form shown in Fig. 4, the free end of a spring blade carries a knob or protuberance, which may be in the form of a rotatable metal ball, which projects through an opening in the container 4 and engages with any one of a series of recesses 15 in the member 8. The latter may be moved by means of a thumb-piece 11 the shank of which may pass through a slot in the container 4 to limit the movement. The relative movement of the two parts may be helical instead of longitudinal.
Patent GB-1267561-A (GB)
Title: Variable geometry aircraft
IPC: B64D37/04
Filed: 1969-03-31
Abstract: 1,267,561. Load support for aircraft. BREGUET-AVIATION SA. 31 March, 1969 [19 April, 1968], No. 16689/69. Headings B7G and B7W. [Also in Division F3] In an aircraft of variable geometry having each wing articulated to the fuselage so as to pivot about an axis, and having an elongated support for attaching external loads to the aircraft, there are means connecting the support to the aircraft at a first location at said axis, or, to the wing about another axis spaced from and parallel to said axis for relative rotational movement between the support and the wing and support anchoring means at a second location longitudinally spaced from the first location and attached to the support, said anchoring means permitting said support to be maintained in a constant orientation with respect to the aircraft irrespective of the orientation of the wing with respect to the fuselage. In an embodiment external loads 5 (such as bombs, tanks, engines or missiles), Fig. 3, are attached to the wing 1 by a load support 7 articulated to a non-rotary member 6 of the pivoting mechanism of the wing and articulated to the tail unit 9, such that the load support maintains constant orientation relative to the aircraft fuselage 2. In another embodiment, Fig. 6, the load support is articulated to the wing by a pivot 10 and spaced from the pivoting axis 3 of the wing 1. The rear end of the support 7 bears a guide finger 14 engaging in a slide 15 disposed below the tail unit 9. The slide 15 describes an arc of a circle equal to and parallel with that described by the pivot 10 during movement of the wing thereby ensuring constant orientation of the load support relative to the fuselage. In a further embodiment (Fig. 9) the load support 7 is only articulated to wing 1 at pivot 10 and with guide finger 19 in groove 20. Constant orientation relative to the fuselage is ensured by a parallelogram linkage formed from arms 16, 17, the rod 18, and the structure of the wing 1, the arm 17 being keyed to a non-rotary member of the pivoting mechanism, so on rotation 16 is kept parallel with 17 and guide finger 19 is forced to follow circular arc slide 20. The guide finger 19 may be locked in the slide 20 when firing a missile. An additional load support 71 is also shown with its corresponding load 51, parallelogram linkage 16, 161, 181 and guide finger 191, with groove 201. In all embodiments the load support can be hollow along its axis of articulation to accommodate accessories such as electric cables and pipes.
Patent GB-563927-A (GB)
Title: Brake
IPC: F16D55/50
Filed: 1942-11-26
Abstract: 563,927. Brakes. SNEED, J. Nov. 26, 1942, No. 16799. [Class 103 (i)] A brake comprises a pair of brake members rotatable with the member to be braked and movable axially towards each other by links connecting them, by the application of a retarding force to one of them. The retarding force may be applied by an internal shoe brake operated by fluid pressure or alternatively by mechanical means. A brake disc 14 bolted at 17 to the hub 15 of a vehicle wheel is connected to a brake disc 22 by a series of links 20 disposed in slots in and having inturned ends 24 engaging shoulders on the discs. The disc 22 is supported from the disc 14 and the discs are normally spaced apart by an annular member 21 of spring steel which bears against shoulders 26 on the discs and also on the links 20. The discs are arranged to grip a non-rotatable disc 6 provided with slots engaged by projections 10 on an axially extending part 11 of a fixed member 8. The disc 6 carries friction linings and the adjacent faces of the discs 14, 22 are formed with spiral grooves 14', 22<1> to increase the braking action. Adjustment of the discs relatively to each other is effected by turning a ring 27 disposed. between the disc 22 and the ends of the links 20 and provided with inclines 28, Fig. 8, engaging the links and with teeth 29 by which it may be turned. The internal shoe brake comprises a pair of channel-section shoes 33 mounted upon the cylindrical part 11 of 'fixed member 8 and are applied to a drum 31 integral with the brake disc 22, by an inflatable tube 35 supplied through a fitting 44, 46 to which the ends of the tube are connected. The middle part of the tube extends through a casing comprising a straight part 49 of the member 11 and a channel member 48. The shoes are anchored by channel members 36 extending through slots in the fixed part 11 and in the edges of the shoes. The anchors 36 are slidable radially and are urged inwardly against springs 38 which are hooked to the shoes at 39 and serve to release them. The shoes are adjustable by eccentrics 41. Mechanical means for applying the shoes comprise channel members 50, 51 engaging the shoe ends and slidable in opposite direction by a lever 52 extending through slots in the members and pivoted at 53 to the casing 48 of the tube 35. When the disc 22 is retarded by the application of the shoes 33 the links 20 assume an inclined position, thus moving the disc towards the disc 14 to grip the disc 6. In a modification, there are three rotatable discs interleaved with two non-rotatable discs.
Patent GB-145504-A (GB)
Title: Improvements in methods and arrangements for examining concave mirrors or collectivelenses
IPC: G01M11/00
Filed: 1920-06-22
Abstract: 145,504. Zeiss, C., [Firm of]. March 19, 1914, [Convention date]. Testing-apparatus, auxiliary.-Relates to testing concave mirrors used for reflecting the rays from a source of light at the focus into a parallel beam. According to the invention, the accuracy with which small areas of the mirror reflect the rays is recorded on a sensitized plate; a microscope objective may be used to produce a point image, at the focus, of a light source located elsewhere, and the objective may be adjustable in position so that the effect of various parts of a light source such as would be used with the mirror may be determined. The invention may also be used for testing collective lenses. As shown, the mirror a is mounted on a rotatable cross b on a frame c. An optical bench d in front of the mirror carries a projection lamp i with a condenser k. It also carries prisms h', h reflecting the beam to a microscope objective g, and a carriage l on which is mounted a prism m<2> and lens m<1> to produce an image on a sensitive plate n<2>. The prisms h<3>, h &c. are mounted on a carriage f sliding in a guide e<1> at the top of a standard e secured to the bench, the carriage being adjustable in position by turning a milled disk f<1>. The condenser k produces a first image of the source of light in an adjustable diaphragm h<2>, and the luminosity of the image produced by the microscope objective g may be varied by varying the diaphragm. The sensitive plate n<2> is carried in a dark slide n<1> which may slide in guides n and is connected by a nut n<3> to a screw o rotated as the carriage l travels along the bench by means of a toothed wheel p engaging a rack p<1>. An iris diaphragm m<3> controls the light passing to the plate n<2>, the light being reflected by a prism m<2> and focused to a point image on the plate n<2> by a lens m<1>. By opening the diaphragm m<3> and moving the carriage l along the bench, a line image is produced on the sensitive plate which indicates the accuracy with which the rays are reflected parallel to the optic axis by small areas of the mirror lying along a line from the vertex. In a modification, the carriage l may carry only a reflector system, and the lens system, with a sensitive plate behind it, may be fixed.
Patent GB-109345-A (GB)
Title: A New or Improved Method of, and Means for, Cooling the Sparking Plugs of Internal Combustion Engines.
Inventor: LAMKIN ARTHUR EDWIN
IPC: H01T13/16
Filed: 1916-11-24
Abstract: 109,345. Lamkin, A. E. Nov. 24, 1916. Sparking-plugs are provided with porcelain or like insulators with tubes through which passes petrol, water, or other cooling-fluid. In one form, Fig. 2, a water pipe, or a pipe supplying petrol to the carburettor, is coiled around grooves f on the insulator d of the plug e. A detachable cover k<1>, Fig. 4, may be provided on the insulator d to retain the cooling-pipe in position. Figs. 6 and 8 show modifications in which the pipe i carrying the cooling-fluid passes through perforations q in the insulator.
Patent GB-564602-A (GB)
Title: Improvements in or relating to explosive compositions containing inorganic oxidisingsalts
IPC: C06B45/04
Filed: 1942-11-27
Abstract: 564,602. Explosives. DU PONT DE NEMOURS & CO., E. I., and DAVIS, C. O. Nov. 27, 1942, No. 16855. [Class 9 (ii)] A low-velocity detonating explosive pellet, suitable for the blasting of coal, comprises coarse granules of a blended mixture containing a self-explosive inorganic oxidizing ammonium salt and an oxidizable material, the granules being themselves insensitive to detonation by a commercial No. 6 lead azide blasting detonator and being embedded in a coherent explosive matrix of fine particles of an intimately blended ammonium nitrate composition which is free from nitroglycerine or other liquid explosive sensitizer, but is sensitive to detonation by the said commercial detonator and is capable of propagating detonation throughout the whole of the pellet. The granules may comprise various combinations of the following : ammonium nitrate, ammonium perchlorate, sodium or potassium nitrate or perchlorate, finely-divided metals, wood pulp, meals and flours, starch and plant products, and nitro-cotton. The matrix may comprise various combinations of ammonium nitrate, sodium nitrate, calcium cyanamide, wood pulp, aluminium powder and T.N.T. (the last two being sensitizers for the ammonium nitrate). The matrix may be made by mixing the ingredients in the presence of water, the wet mass being then intermingled with the dry (insensitive) granules and the mixture being pressed into pellet form while still wet. The water of the matrix may be added water or water formed by chemical reaction between ammonium nitrate on the one hand and calcium cyanamide and the free lime therein on the other hand (Diver's solution being formed).
Patent GB-1011422-A (GB)
Title: Improved circuit breakers
IPC: H01H71/52
Filed: 1962-05-02
Abstract: 1,011,422. Automatic circuit breakers. HEINEMANN ELECTRIC CO. May 2, 1962 [May 15, 1961], No. 16857/62. Heading H2B. The moving contact arm 15 of a circuit breaker is operable manually by a handle 40 through a linkage comprising a pair of toggle links 64, 70 one of which is pivoted to the contact arm 15 and the other of which is coupled by cross links 55, 75 to a fifth link 50 rigid with the handle 40, the link 55 normally being latched by a pin 58 of a lever 60 which in turn is latched by a lever 44 associated with the armature 46 of a tripping electromagnet 23. Upon overload latches 44, 58 are released and link 55 pivots anticlockwise under a spring 28, arranged both to support the contact arm 15 and to bias it to the open position, thus freeing the toggle linkage 64, 70 which collapses under the action of a second spring 83, thus moving the handle 40 to the off position and re-engaging the link 55 with latch 58.
Patent GB-1341423-A (GB)
Title: Process for the production of cyclopentene from cyclopentadiene
IPC: B01J23/40
Filed: 1971-05-25
Abstract: 1341423 Cyclopentene BAYER AG 25 May 1971 [25 May 1970] 16926/71 Heading C5E [Also in Division Bl] Cyclopentene is prepared by partially hydrogenating cyclopentadiene with H 2  in the gas phase at above 50 C. in the presence of a supported catalyst containing Pd with additions of up to 2 wt. per cent Cr and up to 2 wt. per cent Ti. Preferably the catalyst support is a lithium aluminium spinel having a Li content of up to 2À6 wt. per cent.
Patent GB-600717-A (GB)
Title: Improvements in or relating to electro magnets
IPC: H01F7/14
Filed: 1944-09-05
Abstract: 600,717. Electromagnets. CRAMER, S. S. Sept. 5, 1944, No. 16938. Convention date, Aug. 20, 1943. [Class 35] An electromagnet has a solenoid operated arcuate armature with an arm at one end extending inwards for moving a shaft through an angle of at least one hundred and eighty degrees, the circuit of the single winding being opened when the core is approximately at the end of its stroke. In the form shown, the armature 6 is drawn through winding 2i (shown diagrammatically) when external switch 43 is closed the circuit being re-opened at the end of the stroke at contacts 37, 38 the former being on a spring arm 36 pressed down by an extension of plunger 29 depressed by an arm not shown secured at 33 to the armature. The spring arm 36 then closes the circuit of auxiliary winding 38 at contacts 37, 39 for holding the plunger down until the circuit is interrupted at external switch 43 whereupon spring arm 36 raises plunger 29 to its initial position.
Patent GB-1004759-A (GB)
Title: Improvements in or relating to digital systems of the kind for providing an output representation of the value of a predetermined dependent variable
Inventor: RUSH DEREK ANTHONY
IPC: G06F11/00
Filed: 1963-04-30
Abstract: 1,004,759. Selective signalling. S. SMITH & SONS (ENGLAND) Ltd. April 24, 1964 [April 30, 1963], No. 16956/63. Heading G4H. A system for providing values of a function of a plurality of independent variables comprises a store each address of each corresponds to a particular combination of values of the independent variables and at which is stored the corresponding value of the function. As describedthe store stores corrections that have to be, applied to an aircraft fuel gauge as a result of roll and pitch. The roll and pitch values 12, 14, Fig. 1, are digitized to provide 6 bits towards the address and the uncorrected fuel measurement 2 is digitized to provide a further 6 bitstowards the address. This address is compared with address from a circulating store and when agreement is reached the correction value is gated 20 out and converted to analogue form for indication by a meter 25. The circuit shown provides corrections for 7 fuel tanks on a cyclic basis. The fuel gauge transducer can be as described in Specification 695,074 (Groups XXXVI and XL (b)) which is referred to, and its uncorrected mass indicating output is preferably converted to volume before being applied to the system of Fig. 1. The correction could be added to the uncorrected value and then indicated (Fig. 5, not shown). The analogue-to-digital converter (Fig. 2, not shown) is conventional and comprises binaryweighted transformer secondary windings sequentially switched into circuit by transistors and either maintained in or removed in accordance with a comparison result.
Patent GB-711105-A (GB)
Title: Process for the conveyance and utilisation of coal
IPC: E21F13/04
Filed: 1952-07-07
Abstract: Coal is crushed underground and converted into a pumpable pulp by the addition of water.  It is pumped to the surface and there the coal is separated from the ash by filtering, centrifuging or the like.  The pulp is treated either underground or on the surface with a wetting agent to render the coal water-repellent, and thus allow the selective filtering &c. of the pulp.
Patent GB-1097759-A (GB)
Title: Herbicides
IPC: C07D211/76
Filed: 1965-04-22
Abstract: The invention comprises herbicidal compounds of the formula <FORM:1097759/C2/1> in which R is hydrogen or methyl, at least one R being methyl, X is C2-C8 alkyl or one X is methyl and the other is C2-C8 alkyl, C1-C8 alkoxy, C1-C8 alkyl thio, cyclopentoxy or cyclohexoxy, or one X is chlorine and the other is C2-C8 alkyl, C2-C8 alkoxy, C2-C8 alkylthio, cyclopentoxy or cyclohexoxy; n is 1 or 2. These compounds are prepared by reacting an aniline compound of the formula <FORM:1097759/C2/2> with a lactone of formula <FORM:1097759/C2/3> in which R, X and n are as defined above, at a temperature of from 100 DEG  to 250 DEG  C., in the presence of an acidic catalyst such as hydrochloric acid, hydrobromic acid, arene sulphonic acids, sulphuric acid, zinc chloride, formic acid, boron trifluoride and mixtures of acidic substances.  Among the large number of compounds specified are the following:  1-(3-chloro - 4 - isopropoxyphenyl) - 3 - methyl - 2-pyrrolidinone, 1 - (3 - chloro - 4 - isobutoxyphenyl) - 3 - methyl - 2 - pyrrolidinone, 1 - (3-chloro - 4 - sec - butoxyphenyl) - 3 - methyl - 2-pyrrolidinone, 1 - (3 - chloro - 4 - sec - hexoxyphenyl) - 3 - methyl - 2 - pyrrolidinone.ALSO:Herbicidal compositions for the control of weed in pre- and post-emergence application to crop, comprise the novel lactams of formula <FORM:1097759/A5-A6/1> where R is hydrogen or methyl, at least one R being methyl; X is a C2-C8 alkyl group or one X is methyl and the other is C2-C8 alkyl, C1-C8 alkoxy, C1-C8 alkylthio, C5 or C6 cycloalkoxy or one X is chlorine and the other is C2-C8 alkyl, alkoxy or alkylthio group or a C5 or C6 cycloalkoxy group; and n is 1 or 2, together with a conventional diluent or carrier. The compositions may be in the form of a liquid or solid concentrate for dilution before use; e.g. emulsifiable concentrates or wettable powders, or alternatively may be put up ready for use as e.g. dusts or granules.  The carriers may be inert, or may contain other active ingredients, such as fertilisers, activators, synergists, adhesives, surfactants, or insecticides, fungicides or other herbicides.  For selective herbicidal action, the compositions are applied in an amount that is less than that which is phytotoxic for the crop to be treated.
Patent GB-545531-A (GB)
Title: Improvements in or relating to sound reducing devices for suction cleaners
IPC: A47L5/30
Filed: 1940-11-29
Abstract: 545,531. Silencing gaseous currents. HOOVER, Ltd. Nov. 29, 1940, No. 17043. Convention date, Dec. 7, 1939. [Class 7 (ii)] A silencer for suction cleaners comprises a conduit 4 connected to the exhaust passage 1 and formed with perforations 8a, 9a leading to one or more surrounding resonating-chambers 8, 9. The conduit is formed with flanges 5, 6, 7 which are closed by a shell 3 removable for cleaning. The conduit may be lined with sponge rubber or other sound-deadening material, and is connected to the cleaner by a spring pivot 10 and bellows 13. The dust bag 15 is attached to the casing 3. The perforations 8a, 9a may be slots covered with metal gauze. A paper dust bag may be arranged within the bag 15 and connected to the conduit 4. The resonating-casing may extend backwards around the bellows 13. The Specification as open to inspection under Sect. 91 describes also a form of cleaner wherein the resonating-casing is formed integral with the cleaner casing. This subject-matter does not appear in the Specification as accepted.
Patent GB-313006-A (GB)
Title: Improvements in curtain runners
IPC: A47H15/02
Filed: 1929-06-04
Abstract: 313,006. Weber, G. June 4, 1928, [Convention date]. Curtains, suspending.- A curtain runner consists of a U-shaped frame b provided at its lower end with a pair of apertured lugs b<1> to pivotally receive a pair of spring jaws e' between the serrated and upturned lower ends e<1> of which the curtain is gripped. A roller a is arranged, between the upper ends of the frame b, on a spindle a<1> one end of which engages a keyhole slot c in the frame so that it may be disconnected when the runner is placed on the curtain rod. The roller a is pressed from a metal tube or two metal discs.
Patent GB-443132-A (GB)
Title: Spool holders for photographic roll film cameras
IPC: G03B17/30
Filed: 1935-06-13
Abstract: 443,132. Spool-holders for photographic cameras. VOIGTLANDER & SOHN AKT.-GES., 7, Campestrasse, Brunswick, Germany. June 13, 1935, No. 17103. Convention date, June 19, 1934. [Class 98 (i)] A spool-holder has two pivot bolts of different dimensions to be brought as required to hold spools of different sizes or sockets. The flat swinging members 3 are pivoted to the camera at 2, and crank ed inwardly at the enlarged outer part 31 which is formed with a cut-out portion comprising a large segmental portion 4<1> and a smaller segmental portion 42. In the cut-out portion is located a circular disc 6 mountec on a steel wire 5 and formed with lugs 7, 8 and spool end faces 11 12 between which is a groove 9. The disc 6 can be rotated in the portion 4<1> but is normally held in locked position in the portion 42 by a spring 10 which holds the groove 9 in contact with the edge of the cut-out portion. When a different size of spool is to be introduced, the disc 6 is moved into the portion 4<1> and swung over to its opposite side and then allowed to move back into the locked position in the portion 4<2>. Lugs 15 on the members 3 bear against the walls 18, 19 when the camera is closed and maintain the pivots in position.