baber/WOPTO huggingface dataset:
Patent GB-1220664-A (GB)
Title: Extruders
IPC: B29C48/67
Filed: 1969-02-20
Abstract: 1,220,664. Screw extruders. NRM CORP. 20 Feb., 1969 [6 March, 1968], No. 9286/69. Heading B5A. [Also in Division B1] To promote mixing of material within the barrel 42, Fig. 4, of a screw extrusion machine, the barrel is provided with longitudinally extending flutes 40, 41 which co-operate with an unflighted portion 50 of the screw of substantially the same diameter as the bore of the barrel. In the embodiment shown, flutes 40, 41 are circumferentially and alternately arranged and are separated by ribs 52, 55, Fig. 5, the former being in effective sealing engagement with portion 50 and the latter having clearance as at 49 to allow material to flow from an inlet flute 40 to an adjacent outlet flute 41. In a modification, Fig. 6, the clearance may be adjusted by the provision of radially adjustable bar members 60. In a second embodiment, Figs. 8 and 9 (not shown), flutes (80) follow helical paths to promote self-cleaning and each communicates with both the inlet and outlet ends of mixing zone (M<SP>11</SP>). However, the flutes are intersected intermediate their ends by radially adjustable bars (85). In a third embodiment, Figs. 1-3 (not shown), flutes (14) are formed in a ring (9) inserted into the barrel and each communicates with the inlet and outlet ends of mixing zone (M). In all embodiments the screw may be axially adjustable, e.g. by mechanism (30-32), Fig. 1 (not shown), and a gas vent (54) may be provided in the barrel.
Patent GB-609952-A (GB)
Title: Improvements in direct-current electric traction equipments
IPC: B60L9/04
Filed: 1946-03-26
Abstract: 609,952. Automatic control systems for electric motors. PRITT, S. E., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 26, 1946, No. 9332. [Class 38 (iv)] [Also in Group XXXVII] Direct-current traction motors are connected across the generator of a motor-generator set, the motor and generator armatures of which are connected in series across a supply-source, and are controlled by variation of the generator excitation, the excitation of the motor of the said set being so controlled as to maintain the latter at a substantially constant speed. Motors M1, M2 and a generator G are mechanically coupled and are connected in series across a mains supply. Traction motors 1, 2, 3 and 4, which may be connected in series or parallelpairs, are placed across the generator armature. A generator field winding SG is supplied from a cross-field exciter E1 which is so energized through control windings W1 and W2 as to produce an output which is differentially responsive to current-components dependent respectively on the setting of a main control resistor 5 and upon the traction motor armature current, so maintaining a substantially constant armature current at each setting of the main controller. A control winding W3 of the exciter provides a component dependent upon the traction motor armature voltage which acts in opposition to the main reference component so that the traction motor armature current is so dependent upon the armature voltage that a desired drooping current-voltage characteristic is obtained. A control winding W4 provides a component dependent upon the rate-of-change of generator armature current to afford stabilising-action against surges therein. Field windings SM1 and SM2 of the motors M1 and M2 are energized from a cross-field exciter E2 having a constantly-excited control winding W5, and a control winding W6 which is excited according to the difference between an auxiliary mains-voltage and that due to a tachometer generator TG which is coupled to the motorgenerator set. A stabilising control winding W7 is provided. The excitation component due to the winding W6 is cumulative with that due to the winding W5, so that the motorgenerator set is operated at substantially constant speed. The control system may comprise a drum controller for varying the resistor 5, together with a series-parallel switch, a reversing switch, and interlocks to ensure correct switching-sequence. The system may be adapted to provide regenerative braking, in one arrangement the traction motor field windings being separately excited for this purpose. The motor-generator set may be provided with a fly-wheel.
Patent GB-1137204-A (GB)
Title: Fastening devices
IPC: B29C65/48
Filed: 1966-03-03
Abstract: 1,137,204. Nuts; bolts; dowels. STANDARD PRESSED STEEL CO. 3 March, 1966 [4 March, 1965], No. 9383/66. Heading F2H. [Also in Division B3] A thermoplastic element 10, 12, 14, 16 or 17, e.g. of nylon, is bonded to the surface of a fastener, e.g. a nut, bolt or dowel, by an adhesive film comprising a cured blend of thermosetting resin, e.g. epoxy resin, and a thermoplastic resin, e.g. nylon, that can crosslink with the thermosetting resin during curing. A curing agent, e.g. dicyandiamide, can be incorporated into the adhesive. The element is joined to the fastener by first forming a plastic laminate of the element and the adhesive films without curing the thermosetting resin of the films. The laminate is then heated to a temperature above the melting point of the element, and sufficient pressure is applied to cause the laminate into intimate contact with the fastener. Thereafter the laminate is held at a temperature below the melting point of the element to cure the adhesive film.
Patent GB-214815-A (GB)
Title: Improvements in and relating to road scarifiers
IPC: E01C23/12
Filed: 1923-09-12
Abstract: 214,815. Jackson, J. T., Jackson, S., and Jackson, H. H. Sept. 12, 1923. Scarifiers.-Relates to scarifiers for attachment to road rollers in which a tine-holder b is pivotally mounted on a transverse pin b<2> in the usual side frame a, and consists in providing a transverse pin b<9> against which the tine-holder bears when in action, the pin b<9> being situated above and to the rear of the pin b<2>. The pin b<9> is adjustable in eccentric bearings to alter the angle at which the tines b<1> work. The tineholder is rocked into and out of action by a bellcrank lever b<7> pivoted to a bracket b<12> at the rear of the frame a, and connected by a link b<4> with the rear of the tine-holder. The pin b<2> may be adjusted in a similar manner to the pin b' to effect vertical adjustment of the tine holder.
Patent GB-1024699-A (GB)
Title: Formation of cavities in metals
Inventor: DAVID JOHN HOOSON
IPC: B23H9/14
Filed: 1964-03-05
Abstract: A method of forming a cavity in a metal article comprises causing a relative rotational movement to occur between an electrode 10 having substantially the same shape as the cavity to be formed and the metal article whereby the electrode is caused to approach and engage the metal article, an electric potential <PICT:1024699/C6-C7/1> being applied between the electrode and work piece, which are separated by an electrolyte so that metal is electrolytically removed from the work piece as the electrode moves progressively into said work piece to form a cavity.  After producing the cavity the electrode is preferably partly withdrawn from the metal article and the current density reduced for a predetermined time prior to complete removal of the electrode from the article.  In the embodiment shown the electrode 10 is mounted on a bar 16 which is pivoted about, but off-set from a driving shaft 13 which is connected to an electric motor 12 via a reduction gear box 14 (Fig. 1, not shown).  The electrode, which with the workpiece is mounted within a gas tight cell 15, is formed with a plurality of internal passages 20, 25 and 26 through which electrolyte is supplied from a tank 21 via a filter 22, pump 23 (Fig. 1, not shown) and hose 24.  Spent electrolyte is returned to the tank 21.  A current of air is passed through the cell 15 to remove hydrogen formed therein.  After withdrawing the electrode from one cavity 30 it is re-positioned ready to start forming the next nozzle.
Patent GB-411635-A (GB)
Title: Improvements in or relating to road transport vehicles for livestock
IPC: B60P1/43
Filed: 1933-03-29
Abstract: 411,635. Loading-ramps. HODGKINSON, J. G., Chief Goods Manager's Office, Euston Station, London. March 29, 1933, No. 9501. [Class 78 (iv).] A loading-ramp is provided for the upper storey of an animal-carrying vehicle and is constructed in two sections p, q hinged together at p <1>. When in inoperative position the section p forms a tail gate or door for the upper storey and the other section q a tail gate for both upper and lower storeys. Specification 371,133 is referred to.
Patent GB-291919-A (GB)
Title: Improvements in treatment of pyritic ores (fresh or weathered), imperfectly roasted residues, regulus, mattes, hardheads and other metallurgical products containing tinand/or compounds of other metals such as lead, zinc, copper, bismuth, tungsten, antimnoy, iron and associated base and precious metals
IPC: C22B3/14
Filed: 1927-04-06
Abstract: 291,919. Wilder, F. L., Morris, E., Schiff, E., and King, E. S. April 6,1927. Digesters.-A rotary autoclave for treating ores with liquids under heat and pressure is fitted with a filtering partition d and steam heating coil e. The, ores are introduced through a removable end plate , and the liquids through cocks b. After the treatment the treating liquid is withdrawn through a cock c, the filter retaining the solid residue.
Patent GB-748605-A (GB)
Title: Improvements relating to the manufacture of films
Inventor: HAWTIN PHILIP RICHARD
IPC: B29C48/08
Filed: 1953-04-08
Abstract: In the manufacture of films by extruding a thermoplastic film-forming composition through a die, the temporarily heat-fluidized composition is positively fed, at a rate which is constant throughout its width, into a rectangular passage terminating in the die orifice, the passage having <PICT:0748605/IV(a)/1> parallel side walls and top and bottom walls whose minimum distance apart equals the height of the die orifice, the composition being maintained in heat-fluidized condition throughout.  The top and bottom walls of the passage preferably converge towards the die orifice.  The positive feed is preferably effected by a gear-type pump having intermeshing spur gears, one above and one below the passage.  Heating means are provided on the conduit leading to the gear pump, the body of the gear pump, the passage leading to the die orifice and the die block. In an example, a solution of triphenyl phosphate in diethyl phthalate is sprayed on to finely-divided cellulose acetate and the whole is kneaded in a mixer, passed through hot mixing rolls and sheeted to 0.125 inch.  The sheet at about 60 DEG  C. is fed through rollers 23, 24 to a gear pump comprising a pair of spur gears 16, 17 of length equal to the width of inlet conduit 18, through passage 14 having parallel side walls and converging top and bottom walls, to the die orifice 12, where the film is drawn off at such a rate that its thickness at the draw-off rollers is 75 per cent of that at the die orifice.  Heater elements 22, 19, 11 are provided to raise the temperature of the material to 200-210 DEG  C. on extrusion, and air jets cool the film between the die orifice and the draw-off rolls. Various suitable plasticizers are mentioned, and other suitable cellulose derivatives are cellulose esters of carboxylic acids containing 2-4 carbon atoms in the molecule and cellulose ethers such as ethyl cellulose and benzyl cellulose.  Other materials which may be used are thermoplastic linear polymers, copolymers and condensation polymers.
Patent GB-126284-A (GB)
Title: Improvements in Method and Apparatus for Transmitting Selected Sounds.
Inventor: JESSE LEE SPENCE
IPC: H04M1/05
Filed: 1919-04-15
Abstract: 126,284. Spence, J. L. May 2, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Head sets; microphones.-Relates to telephone transmitters, and more particularly to aviators' head sets for telephonic communication. The invention comprises generally, as a means for transmitting certain selected sounds to the exclusion of other extraneous sounds, a closed casing, a microphone within the same comprising two rigid conducting plates and conducting balls lightly clipped between them, and means for attaching the casing to the sound delivering surface with one pf the plates next such surface. As applied to an aviator's helmet, the microphone 16 is carried by an elastic band 17 so as to be pressed against the side of the thorax. The telephone receivers are enclosed by removable casings 17. Fig. 3 shows the microphone in section. The rigid carbon or like plates 23, 24 are held firmly in the metal casing 25, and accommodate balls 26 of carbon &c. There is no diaphragm, and external noises neutralize themselves by a balanced action on the microphone as a whole.
Patent GB-342208-A (GB)
Title: Improvements in the manufacture and production of pure anhydrous aluminium chloride
IPC: C01F7/62
Filed: 1930-03-26
Abstract: Pure anhydrous aluminium chloride is obtained by bringing the crude chloride containing iron chloride into contact with a melt containing aluminium chloride and preferably less than one molecular proportion of an alkali or alkaline-earth chloride in the presence of reducing agents, such as aluminium or iron chips, or reducing gases, such as hydrogen, and subliming off the aluminium chloride.  In an example, vapours from the chlorination of bauxite or of scrap aluminium containing iron are drawn through a melt consisting of 4 parts aluminium chloride, 1 part sodium chloride and 20-40 per cent aluminium chips at 350 DEG  C.  The iron or ferrous chloride may be removed by filtration, or decantation, or magnetically.
Patent GB-289377-A (GB)
Title: Ground anchors
IPC: E02D5/80
Filed: 1928-03-30
Abstract: 289,377. Matthews Corporation, W. N., (Assignees of Birkenmaier, T.). April 25, 1927, [Convention date]. Ground anchors comprise a circular or other base plate 5 having diametrically opposed radial slots 13. A hollow lug 9 of rectangular section is secured by webs 11, 15 at the centre of the lower face of the base plate and a T-shaped projection 25 is secured at the centre of the upper face with its head at right-angles to the slots 13. A tie rod 3 having means at its upper end for attaching a guy-wire &c. passes through aligned holes through the head 25, plate 5 and lug 9 and is secured by a nut 21 fitting in a recess 19 in the lug. The faces of the lug at right-angles to the slots in the base plate are inclined as shown in Fig. 7 and co-act with lugs 43 on links 41 pivoted to a cross block 37 sliding along the tie rod 3. Two circular plates 27 having sharpened portions 35 for entering the ground are provided with slots 29 sufficiently wide to pass over the T-head 25 for assembling the device, after which the plates are turned through 90‹ so that the slots 29 lie above the radial slots in the base plate. The plates are then forced to slide outwardly one over the other and over the base plate by striking the cross block 37 which causes the edges 45 of the links 41 to engage the reduced ends 31 of the slots 29. The initial sliding movement of the plates is controlled by the engagement of the lugs 43 on the inclined faces of the hollow lug 9. When, however, the noses 47 of the links 41 engage in the slots 31 the lugs 43 move off the lug 9 and further sliding of the plates 27 is effected by the toggle set up through the now substantially aligned members 37, 41, Fig. 2. The movement is limited by noses 33 engaging the stem of the T-head 25. A portion 23 of the rim of the base plate is raised to facilitate the sliding of the upper plate, whilst a corresponding portion 30 of the sliding plates is cut away to allow complete closing of the device with either plate uppermost. A securing pin may be passed through holes 49 in the base and sliding plates which register when the device is closed.
Patent GB-1416015-A (GB)
Title: Apparatus for the application fof shrink tubing
IPC: H01R43/20
Filed: 1974-03-05
Abstract: 1416015 Endless belt conveyers VIP MACHINERY Inc 5 March 1974 9729/74 Heading B8A [Also in Division H2] Apparatus for the application of shrink tubing to an electrical connection at the end of a wire assembly comprises a conveyer which grips the assembly between upper andlower belts 30, 28 pressed together between rollers 56, 60 and plate 50. The leading roller 56 is mounted on an arm 72 pivoted at 74 such that it is pulled towards the plate by belt tension, and the rollers 60 are mounted on spring-loaded arms 62.
Patent GB-153030-A (GB)
Title: Vesicular product and the method or process of making such product
IPC: C04B20/06
Filed: 1919-04-16
Abstract: 153,030. Boynton, C. W., and Wig, R. J. April 16, 1919. Concretes and mortars.-A cellular product which is of low apparent specific gravity, a non- ductor of heat and electricity, free from laminations, and substantially impervious to water is obtained by reducing a suitable clay or shale to a uniform fine condition, and heating it in a dry plastic or slimy state under gradually increasing temperature until the mass softens and swells owing to the generation of gas from some of its constituents. A suitable clay contains silica 49 parts, alumina 21 parts, iron oxide 10 parts, carbon 2 parts, lime 4 parts, while a suitable shale contains silica 54 parts, alumina 25 parts, iron oxide 11 parts, carbon 2 parts, and negligible quantities of lime and magnesia. Generally, the clay or shale should be rich in metallic oxides, compounds of carbon, sulphur, sodium, potassium or the like, the nature and proportions of flux and gas generating ingredients being preferably such that the material softens at the same temperature as the gas is generated. Additions or subtractions may be made to ensure this. Excess of iron, lime, and magnesia should be avoided. The material is ground and may be used dry, or as slurry, or it may be made into a plastic mass and moulded, in which case it is advisable to preheat the articles to drive off superfluous water. The temperature of burning varies and may be as low as 1040‹ C. If the product is to be used for insulation or as an aggregate for concrete, oxidation of the surface during burning should be avoided. The product may be preformed into slabs, tiles or the like, or crushed and added to cement. The invention is distinguished from those in which clays, shales, slates, and the like are heated to produce porous masses.
Patent GB-640162-A (GB)
Title: Improvements in or relating to water-repelling organo-silicon products
IPC: D21H19/62
Filed: 1947-04-11
Abstract: A water-repellant paste or grease consists of a water-insoluble, non-volatile liquid polysiloxane incorporating at least 20 per cent by weight of silicon dioxide powder obtained by the combustion of a silicon compound which has been pre-coated with a solid insoluble polysiloxane.  Before or after this pre-coating, the silicon dioxide, which is a light powder weighing less than 50 gms. per litre, may be compressed to increase its apparent density.  The greases may be applied to glass, ceramics, steatite, paper, cardboard, fabrics and metal to protect against or prevent loss of moisture as in water-proof papers or electrical connections and may be used in combination with non-silicic oils and greases.  In examples: (1) silicon dioxide powder is coated with dimethyldichlorosilane and heated at 100 DEG  C. to remove HCl, 20 parts thereof are incorporated with 80 parts of a liquid methyl polysiloxane to give a grease which may be used in electrical equipment such as ignition systems and may be diluted with organic solvents, such as ether, to give a coating composition; (2) 2 parts of silicon dioxide powder coated with a solution of a methyl polysiloxane resin and heat-dried is incorporated with 1 part of a liquid polysiloxane to give a lute. Specification 628,585 is referred to.
Patent GB-1399152-A (GB)
Title: Time switches
IPC: H01H43/06
Filed: 1972-03-02
Abstract: 1399152 Time switches AMF Inc 15 Feb 1973 [2 March 1972] 9825/72 Heading H1N In a time switch having a rotatable dial 10 and at least one tappet 23 carried at the periphery of the dial by mounting means which allows disengagement of the tappet to a position where the tappet can be relocated around the i periphery of the dial while remaining carried by the dial, the mounting means comprises upper and lower flanges 26, 27 on the dial, a pair of arms 28, 35 on the tappet, coaxial grooves 29, 30, in one of said flanges and a rib on one of the tappet arms engageable in said grooves alternatively. As shown the tappets 23 are plastics mouldings with integral arms 28, 35 and an upstanding portion 34 engageable in castellations 25 in upper flange 26 and having an indicating pointer 33 for co-operation with a scale disc 11 on dial 10. A rib 31 on arm 28 is selectably engageable in groove 29 or 30 in lower flange 27 which may be integral with dial 10 and flange 26 but is preferably a separate component. A coil spring 14 forms a friction clutch allowing drive to dial 10 from pinion 16 via sleeves 12 and 13 or mutual adjustment therebetween.
Patent GB-1079110-A (GB)
Title: Improvements in or relating to  roof-bar assemblies for mine-roof support systems
IPC: E21D23/00
Filed: 1966-03-07
Abstract: 1,079,110. Roof bars. HOESCH BERG BAUTECHNIK G.m.b.H. March 7, 1966 [March 6, 1965], No. 9964/66. Heading E1E. In a mine roof support, a roof-bar 12 has a cap 16 pivotable in the vertical longitudinal plane of the roofbar by a piston rod 14 acting through side-arms 19, slidable longitudinally of the roof bar, and a link 24 articulated to the cap and side-arms. The position of the pivots 17, 25, 23 and movement of the side arms is such that movement  of the cap 16 is self-locking over a pre-determined range. The cap may be lowered to provide support for sloping or vertical faces.
Patent GB-966357-A (GB)
Title: Runway light
IPC: B64F1/20
Filed: 1963-03-13
Abstract: 966,357. Aircraft runway lights. CANADIAN PATENTS & DEVELOPMENT Ltd. March 13, 1963 [April 30, 1962], No. 9990/63. Heading F4R. A marker light for aircraft runways comprises a housing 15 having an upper wall 11 formed in part by a glass plate 12 whose upper surface is generally flat and whose under surface is formed with a series of transverse grooves 13 having flat faces lying on planes inclined at angles between 25 and 65 degrees to the plane of the upper surface, or light source 20 mounted inside the housing and optical focusing means, e.g. cylindrical lenses 19 and parabolic reflectors 17, 18 for directing the light in generally parallel rays normal to the faces of the grooves 13, the rays being refracted at the upper surface of the plate to a small angle with the surface of the runway. The light is mounted centrally of and flush with the runway surface. The light source 20 is a line source and is held on clips 21 in the housing. The lenses 19 may also be curved at right angles to the axis of the cylinder to concentrate the light. The upper surface of the plate 12 may also have shallow grooves of very small angle. The device may use a single lens and a single mirror with a curved surface to produce a single beam of light.
Patent HK-119797-A (HK)
Title: Frequency division multiplexed acknowledge back paging system
Inventor: SIWIAK KAZIMIERZ
IPC: H04W84/02
Filed: 1997-06-26
Abstract: An acknowledge back (ack-back) paging system is provided which includes a central station which transmits a group of message signals to a group of ack-back pagers which are addressed as a group. The users of the group of addressed ack-back pagers indicate a response to their respective pagers thus providing ack-back data. The pagers in the group of addressed ack-back pagers then simultaneously transmit back to the central station their ack-back data on different frequency sub-bands, a different frequency sub-band being allocated to each of the pagers in the group.
Patent HU-T42514-A (HU)
Title: Process for preparing new gamma-cyclodextrin derivatives
Inventor: WERNER-MUELLER BERND
IPC: C08B37/16
Filed: 1986-03-14
Abstract: Novel  gamma -cyclodextrin derivatives which are  gamma -cyclodextrin substituted with C1-C6 alkyl, hydroxy C1-C6 alkyl, carboxy C1-C6 alkyl or C1-C6 alkyloxycarbonylC1-C6 alkyl or mixed ethers thereof and their preparation. Compositions comprising such cyclodextrin derivatives and an active ingredient which is preferably a drug and the preparation of such compositions.