baber/WOPTO huggingface dataset:
Patent GB-739193-A (GB)
Title: Improvements relating to waveguides for electromagnetic waves
Inventor: AIKIN ARTHUR WATSON
IPC: H01P3/127
Filed: 1953-04-15
Abstract: 739,193. Wave-guides. METROPOLITANVICKERS ELECTRICAL CO., Ltd. April 15, 1954 [April 15, 1953], No. 10314/53. Class 40 (8). A wave-guide or similar structure is periodically loaded in such a manner that an electromagnetic wave travelling along it has its phase velocity progressively increased or reduced, the spacing apart, i.e. the pitch, of the loading elements being varied progressively so as to be substantially proportional to the phase velocity. It can be shown that, if at any part of the structure the pitch is chosen to be proportional to the phase velocity in that part, it will also be proportional to the wavelength in that part. Thus the same optimum number of loading elements per wavelength is obtained according to the invention in all parts of the guide. The invention may be applied to a corrugated wave-guide in which the phase velocity is determined by the diameter of the guide or of the irises. The wave-guide may form part of a travelling-wave tube or a linear accelerator.
Patent GB-215349-A (GB)
Title: Improvements in cramps
IPC: B25B5/14
Filed: 1924-04-25
Abstract: 215,349. Kiefer & Co., M. May 1, 1923, [Convention date]. Clamps.-In clamps of the kind comprising two pivoted jaw-members c, e and a third jaw m between them, all the jaws are rotatable independently about a common pivot b. The members c, e are formed of plates connected by bolts a, the member c carrying a rotatable block k with which engages an adusting screw h working in a nut mounted on a lug f extending from the member e. The jaw m is carried by an adjustable screw b universally mounted by means of a ball-and-socket on the pivot b.
Patent GB-215541-A (GB)
Title: Improvements in shaving brushes
IPC: A46B15/00
Filed: 1923-04-16
Abstract: 215,541. Sterrick, H. D. April 16, 1923. Hollow and telescopic handles; fixing by self-grip sockets. - In shaving brushes formed either with or without an annular massage device and of the kind in which the brush head telescopes inside the handle, a series of inwardly projecting radial teeth 10, preferably tapered as shown, are formed inside the forward end of the handle, which teeth co-operate with the ferrule 5, preferably also tapered but to a less extent than the teeth, when the ferrule is forced into engagement therewith by means of an external pin on the ferrules projecting through a longitudinal slot with an inclined forward end formed in the handle 1. The tuft 6 is held in a ring 7 which is clamped within the ferrule and seats on ribs 8 therein. The teeth 10 act as guides for the bristles as the tuft is moved in and out.
Patent GB-664942-A (GB)
Title: Improvements in or relating to herbicidal compositions
IPC: A01N47/06
Filed: 1949-04-19
Abstract: 664,942. Herbicides. MONSANTO CHEMICAL CO. April 19, 1949 [Oct. 23, 1948], No. 10329/49. Class 81 (i). A herbicidal composition contains as essential activo ingredients a compound of general formula in which x is an integer greater than 1 and R and R' are alkyl or substituted alkyl groups other than aryl-substituted alkyl groups and either a wetting agent or a carrier comprising a powder or mineral oil solvent high in aromatic content which carrier may also contain a wetting agent. Specified alkyl groups are methyl, ethyl, propyl, isopropyl, butyl, isobutyl, amyl, isoamyl, hexyl, cyclohexyl, methyl cyclohexyl, methoxy ethyl, ethoxy ethyl, chloromethyl, chloroethyl and octyl. Typical herbicides are the bis (alkyl xanthic) disulphides, e.g. bis (methyl xanthic) disulphide and the corresponding trisulphides, tetrasulphides and higher polysulphides. The compositions may be in the form of dusts with, e.g. talc, pyrophyllite, clays, fuller's earth and diatomaceous earth; sprays in which the herbicide per se, or dissolved in an organic solvent such as acetone or a mineral oil, is dispersed or emulsified in water with or without the aid of wetting agents such as sulphated fatty'alcohols, alkylated aromatic sulphonic. acids and amino soaps. Other additions are other herbicides such as sodium pentachlorophenate, pentachlorophenol and nitrophenol, fungicides, insecticides and adhesives;.e.g. karaya gum.
Patent GB-680665-A (GB)
Title: Improvements in or relating to devices for electrifying wire fences
IPC: H05C1/06
Filed: 1950-04-27
Abstract: 680,665. Supply systems for electric fences; condenser arrangements. MALLETT, H. W., MALLETT, E. B., and TURK, B. S., [Representative of MALLETT, E.]. April 27, 1951 [April 27, 1950], No. 10399/50. Class 38 (iv). Contact of an animal with the fence 9 completes an energizing circuit for a relay 6 which closes its contacts 6a and discharges a condenser 1 into a step-up transformer 5, thus causing a relatively high voltage impulse to be applied to the fence. The condenser is charged over a resistor 3 from a source 4. A neon tube, or condenser, 8 insulates the secondary of the transformer from earth insofar as the actuating circuit of the relay is concerned, but effectively earths the secondary winding when a voltage impulse occurs. The electromagnetic relay may be replaced by a gas-discharge relay, a trigger electrode of which is energized by contact of an animal with the fence. In another arrangement, the condenser is normally discharged, being shunted by the primary winding of the transformer over the relay contacts which are normally closed. The energizing circuit for the relay coil includes its own contacts and the primary and secondary windings of the transformer in series. This circuit is completed by contact of the animal with the fence, whereupon the relay picks up and opens the shunt on the condenser, which commences to charge. The charging current eventually becomes insufficient to retain the relay in its operated condition; its contacts then close and the condenser discharges into the transformer.
Patent GB-1063316-A (GB)
Title: Method of producing cups
Inventor: SCHILLING PAUL KEHNE
IPC: B29C45/00
Filed: 1965-03-11
Abstract: 1,063,316. Moulding cups with handles. PLASTICS Inc. March 11, 1965, No. 10440/65. Heading B5A. A plastics cup is formed by moulding the cup body of thermoplastics material with a strip subsequently to form the handle and of greater thickness than the cup body extending therefrom, removing the cup from the mould when the cup body has set but while the thicker strip is still in a plastic condition, and bending the strip into a curved shape to form the cup handle. The cup body (10) with attached handle strip (26) is moulded by injecting plastics into a mould comprising a male section 20 and female section 19, preferably around an inner plastics shell 17. Projections 61 prevent the shell from rising against the female mould and also create a ripple in the plastics as it flows around the shell whereby the join line in the plastics is wavy rather than straight. The shell may also be held against the male mould by suction through passages 63 and 64. The handle-forming apparatus (Fig. 5, not shown) comprises a platform (34) slidably mounted on rods (31-33), having a pair of arms (46) straddling a roller (52) held by spring means against the platform. The cup is placed on the platform with the still pliable strip positioned between the roller and a curved bar (41) extending along the platform. An hydraulic ram presses the cup downwards against springs (36), (37) whereby the roller pushes the strip around the curved bar to shape the handle.
Patent GB-825062-A (GB)
Title: Improvements in vacuum type electric circuit breakers
IPC: H01H33/664
Filed: 1956-04-05
Abstract: 825,062. High-tension switches. SOC. GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES ALSTHOM. April 5, 1956 [April 8, 1955], No. 10462/56. Class 38 (5). A H.T. vacuum switch, particularly for D.C. circuits, has annular ring contacts 4, 5 in an airtight enclosure with an operating member 7 passing through a bellows 8. When the contacts 4, 5 are separated the series electromagnet 9, 10 produces a radial field which rotates the arc path around the ring contacts so as to reduce contact heating and ionization. The moving contact is tilted during its movement, by engaging a projection 13, so as to deflect any electrons which are emitted away from the fixed contact.
Patent GB-123259-A (GB)
Title: Improvements in Pulverising Mills.
Inventor: WALKER HENRY
IPC: B02C15/00
Filed: 1918-06-25
Abstract: 123,259. Walker, H. June 25, 1918. Rollers.-In roller- and-ring mills for grinding or crushing, of the kind in which convex rollers are pressed by springs &c. against the concave interior face of the ring, the rollers consist of a renewable hoop, mounted on disks. As shown, the hoop a is formed with interior conical parts, engaging disks b, c which are drawn together by bolts g and secured to the shaft by keys d, e. The disk b may be shrunk on the shaft. The hoop may be secured to the ring by one or more keys e<1>. The shaft may be formed with a collar for engaging one of the disks.
Patent GB-232961-A (GB)
Title: Improvements in receiving apparatus for high frequency signals
IPC: H05K5/00
Filed: 1925-04-22
Abstract: 232,961. British Thomson-Houston Co., Ltd., (Assignees of Carpenter, G. W.). April 25, 1924, [Convention date]. Receiving - sets, construction of.-The component parts of a multivalve set are compactly arranged inside a metal or other container 4, which is thereafter filled in with resin or other insulating material 34 so as to protect the parts from mechanical injury and the soldered connections from corrosion. The main receptacle 4 is covered by a top plate 7 to which an insulating slab 5 is connected by screws 6, Fig. 3. Openings 9, 10 in the slab and cover respectively are aligned to allow the insertion of vacuum tubes, which make contact with spring strips 13, and are held in position by a bayonet-joint fastening. High-frequency transformers 16, 17, 18, 19 are suspended from the slab 5 by screws, the magnetic circuits being formed by a single set of punchings held together by rivets 20. Low-frequency transformers 21, 22 are similarly supported from the slab 5. The various components are connected in circuit by terminals 28 extending upwards from the slab 5 and by others 29 extending downwards. Parallel strips 25 secured to the are of the highfrequency transformers by rivets 26 carry shunting condensers 27. The connecting conductors 32 pass through an overhung portion 33, Fig. 3, of the slab 5 so that they are protected as far as possible from dust or mechanical injury.
Patent GB-114090-A (GB)
Title: Improvements in Cutter Arms for Tube or Pipe Cleaning Machine.
Inventor: ALLEN JOSEPH JAMES
IPC: F28G3/14
Filed: 1917-07-23
Abstract: 114,090. Allen, J. J. July 23, 1917. Cleaning internally, rotary appliances for.-In a tool for cleaning boiler tubes &c. having rotary cutters carried on arms pivoted on pins in disks forming the head, the arms are provided with projectians which rest on the central spindle which thus takes part of the pressure. As shown in the drawings, the cutters B are carried by arms F pivoted at D to disks H carried by the spindle K. Each arm has a projection A adapted to rest on the spindle. The pivots E of the cutters are keyed to the arms to prevent rotation.
Patent GB-749814-A (GB)
Title: Improvements in or relating to continuously variable-ratio gears
IPC: F16H15/40
Filed: 1952-04-28
Abstract: 749,814. One-way brakes. SOC. GEOFFROY DELORE. April 28, 1952 [April 26, 1951; March 28, 1952], No. 10576/52. Class 103 (1). [Also in Group XXIV] In a continuously variable ratio friction gear having balls 36 and rollers 37 in a cage 34 which rotates with the driving and driven shafts for direct drive (see Group XXIV), the reaction couple on the cage for the indirect ratios is taken by a one-way brake comprising pivoted pawls 64 on the cage engaging teeth 61 on a stationary surrounding casing 31. The pawls are biased to the engaged position by springs 65: When the cage rotates forwardly (clockwise) for direct drive, centrifugal force acts on the pawl extensions 62 to pivot the pawls against the biass of the springs and draw them clear of the teeth 61. Specification 704,679, [Group XXIV], is referred to.
Patent GB-895830-A (GB)
Title: Conversion of electrical signals into visual symbols
Inventor: BENJAMIN RUDOLF
IPC: G09G1/10
Filed: 1958-09-12
Abstract: 895,830. Cathode-ray tube circuits. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 12, 1958, No. 10640/61. Divided out of 892,213. Class 40(7). Digital signals are supplied to X and Y deflection integrators and to a brightness control of a cathode-ray tube (C.R.T.) to build up on the screen thereof a symbol outline as a succession of straight line motions. In the embodiment all alpha-numeric characters are traced out by a scanning spot moved in a succession of straight line steps of equal length and in any one of eight possible directions from a previous position by the application of integrated positive or negative or zero pulses to either or both the X and Y plates and the simultaneous application of positive or zero pulses to the C.R.T. grid. The symbol generation pulses are set up and stored in a magnetic core matrix in which successive rows of cores store X plate pulses, Y plate pulses and brightening (B) pulses. An "end-ofsymbol" indication in any columns which are not required for the particular symbol being written is provided by the storage of a pulse in an extra (E) row on the last column needed for that symbol, and when a pulse is received from the corresponding bank of switch S1 the X and Y integrators and the switch are reset. To avoid magnetic saturation the input pulses may be single sine waves and the inputs to the integrators are then strobed to pass first half-cycles. For display on several C.R.T.'s a common symbol generator repeatedly goes through sequencies of symbol generations and the symbol to be displayed on any particular tube is selected when it is generated.
Patent GB-122206-A (GB)
Title: Improvements in or relating to Electric Heat Radiators.
Inventor: BERRY ARTHUR FRANCIS
IPC: H05B3/00
Filed: 1917-07-26
Abstract: 122,206. Berry, A. F. July 26, 1917. Filaments.-A heating lamp has a filament of tungsten or other refractory metal or alloy, the surface of which is grained or matt to promote radiation, the filament being brought to a high temperature, say 2000‹ C. The matt surface may be produced on the filament chemically, as by oxidation, or mechanically, as by rubbing or treating the filament with material such as sand, emery, or powdered glass. A sand blast may be used. Specifications 8947/07, 136/14 and 13076/14 are referred to.
Patent GB-237655-A (GB)
Title: Improvements in or relating to loose nailing machines for use in nailing boots or shoes
IPC: A43D69/02
Filed: 1924-05-02
Abstract: 237,655. British United Shoe Machinery Co., Ltd., and Roberts, W. T. B. May 2, 1924. Loose-nailing. - A loose-nailing machine, particularly of the kind described in Specifications 16080/11, 112.325, and 193,976, and adapted for repairing work, is provided with mechanism which inserts a fastener in two distinct steps by two hammer blows between which the work is fed, in either of two mutually transverse directions, by a member which engages the partly driven fastener. As illustrated in connection with the machine described in Specification 193,976, a slide 4 is mounted in a guideway 3 in a bracket 2 on the vertically-movable head 1. A projecting horizontal part 5 of the slide 4 is formed with an arcuate slot 6 extending about an axis lying in a vertical plane extending rearwardly through the fastener driver 8. Positioned in the slot 6 ,are rolls 10 on studs 9 fixed in plates 11, 12 lying above and below the part 5. Pivoted to the part 5 and pressed on to the work by a spring 15 is a feed plate 14 formed with two faces 16, 17 at right-angles to each other and adapted to engage a partly driven fastener to feed the work. The plates 11, 12 are connected by a link 24 to an arm 25 pivoted on a vertical shaft 26. The arm 25 is slidably connected by a pin 29 to an arm 28 fast on the shaft 26, and the latter is adapted to be rocked to an extent limited by a screw 32 by a cam-engaging arm 30 in order to oscillate the arm 25 and so the link 24. The slide 4 is adapted to be locked by a latch 18 either to the bracket 2 or to the plates 11, 12. If the slide is locked to the bracket, oscillation of the link 24 moves the plate 14 under control of the slot 6 in order to feed the work transversely of the machine by means of the face 16. If the slide is locked to the plates 11, 12, the arm 24 moves the slide 4 and plates 11, 12 together to feed the work longitudinally of the machine by means of the face 17. An adjustable edge gauge 34 is pivoted to the bracket 2 so that it can be turned out of the way. During the operation of the machine, the nail throat 42 is moved down. until it engages the plate 14. A fastener is then partly driven by the driver 8. The work is then fed by the plate 14 engaging with the partly driven fastener, and on the next descent of the driver 8 the previously inserted fastener is driven home bv a block 49 slidable in a cut-away portion of the throat and shaped to engage the fastener irrespective of the direction in which the work is being fed. The block 49 is driven down by a plunger 53 and is raised by the engagement of a hook on a thin arm 50 with a hook 51 on the arm 52 of the fastener stirring mechanism described in the last-mentioned Specification. The clenching cavity of the horn tip may be set in either of two positions corresponding with the direction of the work feed, and be locked by a spring plunger. Specification 28925/09 also is referred to.
Patent GB-718735-A (GB)
Title: Liquid-discharge nozzles
IPC: B05B13/06
Filed: 1952-04-30
Abstract: 718,735. Spray-producers. GRANRT, V. D., and PRINCE, C. A. July 20, 1953 [April 30, 1952], No. 10848/52. Class 69 (3) Liquid is discharged in an orbital path on to a cylindrical surface h from the outlet of a flexible pipe f, which outlet extends through an obliquely offset outlet e in a sleeve d which is rotated about a stationary liquid delivery pipe c. The liquid is propelled to the said outlet by air from a stationary pipe a.
Patent GB-446553-A (GB)
Title: Improvements in high frequency electric cables
IPC: H01B11/20
Filed: 1935-04-09
Abstract: 446,553. Cables. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. April 9, 1935, No. 10988. Convention date, April 9, 1934. [Class 36] To prevent cross-talk in a high-frequency cable comprising a plurality of coaxial double lines, the double lines are spaced from one another and are embedded in conductive material which may be metallic or, in the case of a submarine cable, sea water. Fig. 2 shows a submarine cable having coaxial double lines 21-24 each comprising multistranded conductors 25, 27 separated by air-space insulation which is provided by a helically wound insulating strand 26. Over the outer conductor 27 is arranged a thin insulating layer 28 which is surrounded by a lead sheath 29 and an outer layer of hygroscopic material 30. Jute or other absorbent fillers 31, 32 are arranged between the double lines which are then provided with an armouring of round wires 33 embedded in layers of jute. When the cable is laid in water the water penetrates up to the lead sheaths 29 and, together with the latter, constitutes the conductive material between the double lines. The lead sheaths 29 and insulating layers 28 may be omitted if the air-space insulation of the double lines is replaced by rubber or other non-hygroscopic insulation. The hygroscopic fillers 31, 32 may be replaced by fillers of wire fabric, or by distance pieces which are so formed as to allow sea water to penetrate between the double lines. In modified constructions the double lines are embedded within a cylindrical metal core which mav be extruded about the double lines, or which may be formed by one or more shaped metal strands, such as 66, 67, Fig. 6, having recesses to accommodate the double lines.
Patent GB-623472-A (GB)
Title: Improvements in and relating to the polymerisation of ethylenically unsaturated compounds
IPC: C08F4/04
Filed: 1947-04-25
Abstract: Ethylenically unsaturated compounds are polymerized, singly or in admixture, at a temperature below 100 DEG  C., a range of -80 DEG  to 60 DEG  C. being specified, using salts of azo disulphonic acid as catalysts, those specified being salts of lithium, sodium, potassium, beryllium, magnesium, calcium, strontium and barium and tri - (b  - hydroxyethyl) ammonium, methyl ammonium, pyridinium and bis-(b -hydroxyethyl) ammonium azodisulphonates.  Bulk, solution, emulsion or granular methods may be used.  Monomers specified are acrylonitrile, methyl methacrylate, styrene, allylidene diacetate, vinyl acetate, vinyl or vinylidene chloride or fluoride, ethylene, vinyl acetylene, fluoroethylenes such as those of the formula F2C= CXY, where X can be H, Cl or F and Y is Cl or F, and mixtures of vinyl chloride and ethyl maleate or maleic anhydride.  At below -10 DEG  C. liquid ammonia may be used as medium, but water, ammonia, methanol or tert.-butanol mixed with water may be used.  Any surface-active agents may be added when using the emulsion technique. In polymerizing vinyl chloride, the sodium sulphonates of paraffin white oils having 13 to 20 carbon atoms, as described in U.S.A. Specification 2,197,800, may be used.  The polyvinyl chloride may be dissolved in cyclohexanone. The polymers may be used as foils, fibres or in mouldings.
Patent GB-644178-A (GB)
Title: Improved fluid-pressure control system for variable pitch propellers
IPC: B64C11/42
Filed: 1948-04-23
Abstract: 644,178. Variable-pitch propellers. GENERAL MOTORS CORPORATION. April 23, 1948, No. 11201. Convention date, June 14, 1947. [Class 114] [Also in Group XXIX] A variable-pitch propeller operating motor has pressure fluid supplied to one side of it only, under the control of a speed governor valve, this fluid being also led to a leak orifice controller by a pressure controlled valve. A steady pitch is maintained by the governor valve 22 applying like pressure to the space 46 through the offset Y. This offset also allows fluid to pass to the space 112 below the valve 74, and also to the leak 160. Line pressure from the line 10, together with the spring 96 holds the valve 74 down and vents pressure through ports 152, 154. The reducing valve 161 supplies reduced pressure to the space 48. When increased pitch is required valve 22 moves upward, increasing pressure in space 112 lifting valve 74 and closing ports 152, 154. If pressure demand is great, land 102 also closes the passage 118 to the leak. Fluid from space 48 lifts valve 161 and escapes through slots 195. To decrease pitch, valve 22 descends, venting lead 42 through ports 226. The movement of the piston 50 lowers pressure in space 191, causing valve 161 to descend and supplying fluid from line 70 through ports 187 to line 44 to move piston 50 further.