baber/WOPTO huggingface dataset:
Patent GB-1471688-A (GB)
Title: Polyamide yarns
IPC: D02G1/02
Filed: 1974-07-01
Abstract: 1471688 Polyamide yarns E I DU PONT DE NEMOURS & CO 1 July 1974 [2 July 1973] 29139/74 Heading B5B [Also in Division D1] A polyamide feed yarn for twist texturing has a break tenacity of at least 6À5 g.p.d., a yarnon-yarn friction coefficient of less than 0À50, and a freedom from stick-slip behaviour, and comprises polyhexamethylenedodecanedioamide, of 30 to 70 relative viscosity, having a triclinic crystallite cell structure, having a crystal perfection index of less than 50 per cent and being substantially free from the alpha crystalline form. The feed yarn may be an undrawn yarn which draw-twist textures at a draw ratio of 3À5 x to 4À5Î, and may have a break elongation of 30 to 40 per cent. The feed yarn may be textured by drawing and false twisting at an applied twist of 170 to 200 t.p.i. and a temperature of 150-200‹ C. The textured yarn has the properties of the feed yarn, except for having a crystal perfection index of at least 75 per cent and a ratio of alpha to beta crystalline forms of at least 1À0, and additionally has 45 to 65 c.p.i., a crimp elongation of at least 40 per cent, and a ratio of c.p.i. to t.p.i. of at least 1À6. Methods of measuring crystal perfection index and amounts of crystal forms by X-ray diffraction are described, and so are methods of measuring break tenacity, friction coefficient, relative viscosity, degrees of crimp and twist, crimp elongation and other parameters. Texturing.-Feed yarn 12, Fig. 1, is first drawn while running from pin 24 to and around small step 30 of draw roll 26. The yarn is then heated on plate 34, false twisted by rotating friction tube twister 36 and simultaneously drawn while running to large step 28 of roll 26. If roll 26 has one diameter, all the drawing occurs before the roll and before the false twisting. Alternatively, Fig. 2, feed yarn 12 is heated on plate 34 and false twisted by twister 36 while being simultaneously drawn by draw roll 44. Other texturing processes, e.g. stuffer box, knitdeknit and gear crimping, may be used. False twister 36, Fig. 1, comprises electric motor 50 whose hollow rotor 52 has at its ends friction twisting bushes 54. At least a portion of the yarn contacting surface of the bushes has a high coefficient of friction with the running yarn.
Patent GB-908219-A (GB)
Title: Process for the halogenation of allene
Inventor: LEEUWEN JAN VAN
IPC: C07C17/02
Filed: 1960-08-23
Abstract: 2,3-Dichloropropene and 2,3-dibromopropene are prepared by reacting allene with chlorine or bromine respectively in the gaseous phase at elevated temperatures.  Inert diluent gases may also be present. Preferred chlorination conditions are 360-600 DEG C. and a contact time of 0.2-0.5 seconds, and preferred bromination conditions are 200-550 DEG C. and a contact time of 0.1-10 seconds. Other products obtained are propargyl chloride, monochloroallene, 1,2,3-trichloropropene, 1,2,2,3-tetrachloropropane, propargyl bromide, monobromoallene, 2-bromopropene, and tetrabromopropane.
Patent GB-759690-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04Q3/00
Filed: 1950-11-29
Abstract: 759,690. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd., and CHUBB, A. A. Sept. 27, 1951 [Nov. 29, 1950], No. 29178/50. Drawings to Specification. Class 40 (4). A subscriber's line circuit has a line switch whose bank is connected to a plurality of types of switch units arranged in separate groups, the group over which the switch hunts to find a free unit being determined by the route over which the line circuit is seized. Apart from minor differences in a valve circuit in one of the seizure routes the circuit is identical with the subscriber's line circuit of the automatic exchange described in Specification 759,682.
Patent GB-907204-A (GB)
Title: Improvements in and relating to multiway electrical-terminal assemblies
Inventor: WILLIS JAMES BONELLE DONALD
IPC: H01R9/24
Filed: 1959-08-26
Abstract: 907,204. Terminal boards and blocks. EXPRESS LIFT CO. Ltd. Aug. 25, 1960 [Aug. 26, 1959], No. 29186/59. Class 38 (1). The insulating separator plates for a multiway terminal block are mounted in adjacent pairs 7, 8 on insulated rods 1, 2 attached at one end to mounting bracket 5 and between each pair a terminal member 11 is supported by a tongue projecting from the member and fitting in slot 10 in plate 8. The provision of spacing washers 20 and spring 21 ensures rigidity when mounting bracket 6 is fitted and locked by tongue 24 fitting hole 22. Wires are clamped in one half of channel member 12 by screw 16 pressing on contact strip 17. The screws 16 are threaded into block 14 the other end of which (not shown) projects to form the locating tongue. An indicator strip 26 may be fitted over tags 25.
Patent GB-329254-A (GB)
Title: Improvements in magazines for motion picture cameras
IPC: G03B17/26
Filed: 1929-09-26
Abstract: 329,254. I. G. Farbenindustrie Akt.- Ges. Oct. 30, 1928 , [Convention date]. Kinematograph apparatus. - Relates to magazines for kinematograph cameras of the kind comprising two compartments for the unexposed and exposed film and provided with exit and entrance slits, and consists in covering the small part of the film lying outside the magazine during storage with a rag soaked in some softening-agent such as glycerine or butylene glycol to prevent it becoming brittle.
Patent GB-940679-A (GB)
Title: Improvements in or relating to fluid control valves
Inventor: GEORGE EDGAR
IPC: F16K31/122
Filed: 1960-08-24
Abstract: 940,679. Valves. PERRETT CONTROL CO. Ltd. Aug. 24, 1961 [Aug. 24, 1960], No. 29238/60. Heading F2V. Fluid flow between an inlet 2 and an outlet 3 is controlled by a lift closure 7 which is urged on to its seat by a spring 12 and inlet pressure acting on the upper surface of piston 14 secured to the hollow valve stem 9; the inlet pressure passes through the stem 9, which includes a calibrated orifice 21. The inlet pressure acts directly on the closure 7 in a direction to open it but since the exposed area of the latter is less than the area of the upper surface of the piston 14 the valve remains closed. The spring may act on the piston instead of the closure member. Upon admitting a control pressure through a port 22 to act on the underside of the piston 14 the closure 7 is unseated, the fluid above the piston being expelled into the inlet at a rate dependent upon the size of the orifice 21 which thereby determines the speed of valve actuation. The valve is reclosed by reducing the control pressure. The piston may be of the differential type. Different rates of valve opening and closing may be effected by a dual-passage orifice, one passage being closed by a ball non-return valve; alternatively a single passage orifice may be used with a ball valve which is fully opened by flow in one direction and partially closed by flow in the opposite direction. The bonnet bore through which the stem slides has a vent passage 25 intermediate a pair of seals 23.
Patent GB-737678-A (GB)
Title: Improvements in or relating to hydraulic control valve apparatus
Inventor: LEVETUS FRANCIS BENJAMIN
IPC: F15B13/04
Filed: 1952-11-19
Abstract: 737,678. Fluid-pressure servomotor-control systems. KEELAVITE CO., Ltd. Nov. 9, 1953 [Nov. 19, 1952; June 22, 1953], Nos. 29271/52 and 17277/53. Class 135. A hydraulic servomotor-control system comprises a main piston valve member A slidable in a casing B to control an inlet port B<SP>1</SP>, exhaust ports B<SP>2</SP>, and motor ports B<SP>3</SP>, B<SP>4</SP> and having recesses D<SP>1</SP> at its ends co-operable with pressure balancing valves F controlling the flow of pressure liquid from inlet passages E to outlet passages E<SP>1</SP>, E<SP>2</SP> leading to an exhaust port G<SP>4</SP> through a subsidiary valve H. The valve H comprises a plunger H<SP>1</SP> resiliently held between bellows H<SP>3</SP>, H<SP>7</SP> and operable by a lever H<SP>4</SP>. A continuously rotating valve J having an opening J<SP>1</SP> to exhaust is disposed between the passages E<SP>1</SP>, E<SP>2</SP> so that the pressure in these passages and chambers B<SP>5</SP>, B<SP>6</SP> in the casing B is continuously changing to maintain the valve A in a state of vibration to improve its sensitivity. On movement, e.g. of the valve H to the left, the effective areas of the passages E<SP>1</SP>, E<SP>2</SP> are increased and decreased respectively so that pressure in the chamber B<SP>6</SP> builds up to move the valve A rightwardly to supply pressure liquid to the right-hand end of the motor C and exhaust it from its left-hand end. During the right-ward movement of the valve A the lefthand valve F reduces the opening to the chamber B<SP>6</SP> and the right-hand valve F increases the opening to the chamber B<SP>5</SP> to restore the pressure balance acting on the valve A. In a practical example, the pressure liquid passing through the balancing valves F and the subsidiary valve H is derived from the same source as that supplied to the motor C in which case axial and radial passages in the valve member A connect the inlet port B<SP>1</SP> with the recesses D<SP>1</SP>. The valve J is continuously rotated by a hydraulic gear motor which motor also rotates the valve H to improve the sensitivity of the apparatus, and an adjustable needle valve is located in the exhaust outlet G<SP>4</SP> to control the sensitivity of the valve member A. In a modification, pressure liquid enters the port G4, passes into the pressure balancing chambers B<SP>5</SP>, B<SP>6</SP> through the passages E<SP>1</SP>, E<SP>2</SP> and out therefrom through the passages E, in which case the valves F are tapered to open instead of close on movement of the valve A away from the adjacent end of the casing B.
Patent GB-859691-A (GB)
Title: Improved upper ram of a press for use in the manufacture of cardboard
Inventor: LOTT ALFRED
IPC: D21J1/00
Filed: 1958-09-12
Abstract: 859,691. Presses for cardboard &c. ANDERSEN, E. L., [trading as HAUSER KOMMGES., M.], and LOTT, A., [trading as LOTT & CO., F. H.]. Sept. 12, 1958, No. 29304/58. Class 96. The upper platen 1 of a press for cardboard sheets &c. has, at its working face, a felt 11 and a metal screen 12, the ends of which are secured to cylinders 9, 10 supported in bearings 7, 8 on brackets 5, 6 which bearings may be tightened to hold the felt 11 and the screen 12 closely against the lower face of the platen 1. The cylinders may be mounted offset as shown, for compactness.
Patent GB-897718-A (GB)
Title: Handles
Inventor: SPEGELSTEIN EMANUEL
IPC: A45C13/26
Filed: 1957-09-17
Abstract: 897,718. Drop handles. SUPER METAL STAMPINGS Ltd. Sept. 11, 1958 [Sept. 17, 1957], No. 29314/57. Class 52(1) [Also in Group XVII] A handle for a suitcase &c., comprises two metal pressings 1, 2 held together by ferrules 11 which serve as pivots for the handle within bearings 16 of handle plates 14. The tubular metal ferrules 11 are inserted through cylindrical bosses 9 formed in the limbs 5 of the pressings. A circumferential rib 13 is formed in each ferrule 11 to centralize the handle within the plates 14.
Patent GB-408344-A (GB)
Title: Improvements in screwdrivers, socket wrenches and the like
IPC: B25B17/00
Filed: 1932-10-20
Abstract: 408,344. Hand - tool handles. ROTTENBURG, H., 5, Adams Road, Cambridge. Oct. 20, 1932, No. 29315. [Class 61 (i).] In a device for screwing-up screws, nuts &c. by hand, a stem A provided with a quick pitch screw thread is attached to a tool-socket C carrying a screw-driver bit E or a socket-wrench and has slidable thereon a flywheel-nut F rotatably attached to a handle J by a ball-bearing K. When the flywheel reaches the bottom of the stem A projections G1 thereon engage surfaces H on the socket C thus giving a blow to the tool both rotationally and axially and tending both to rotate the screw &c. and force the screw-driver into engagement therewith. A handle B secured to the top of the stem A serves to steady the apparatus and may be used for applying a torque to take up back-lash between the parts. The stem may be made of twisted squaresection rod fitting in square holes in the handle B and socket C, or may be of circular section with the screw thread cut thereon. The shape of the projections G1 and surfaces H may be varied. According to the Provisional Specification, projections may be provided at both ends of the stem to adapt the apparatus for use in either screwing-up or unscrewing.
Patent GB-173635-A (GB)
Title: Improvements in or relating to machinery or apparatus for folding paper or the like
IPC: B65H45/18
Filed: 1920-10-18
Abstract: 173,635. Annand, M., (Representative of Annand, R. C.). Oct. 18, 1920. Folding paper.-Apparatus for folding book sections comprises rollers i, k for fold. ing and cutting the sections on the headline, the roller i being provided with a folding-blade i<1> and grippers h, and the roller k being provided with folding-jaws k<2>. The folding-blade is mounted between cushions i<6> in a holder i<2>, and is formed with a plain middle part i<3>, Fig. 13, preferably mounted on springs i<5>, and serrated end-parts i<4> of approximately page-width; or the blade may have a serrated middle and plain ends. The grippers h are secured to a rock-shaft h<1> operated by an arm h<2> having a roller h<3> co-operating with a stationary cam h'. The cam is secured adjustably by a screw h<10> to a support h<9> and is provided with an adjustable extension secured by a screw. The pivoted folding-jaws k<2> are closed by springs k<4> when permitted by a rocking disc k<5> which is secured to a shaft k<6> and is formed with notches for receiving rollers on the jaws. The shaft k<6> is provided with a rocking arm co-operating with a stationary cam k<9> which is secured adjustably by a screw k<12> to a support k<10> and is provided with an adjustable extension secured by a screw k<15>. In operation, the open grippers h receive the twice-folded sheet from tapes g and thereupon close and convey the sheet, the middle line coinciding with the folding-blade. When the parts are approximately in the position shown, the folding-blade co-operates with the folding-jaws to fold and perforate the sheet. Tapes l receive the sheet when it is released by the folding-jaws.
Patent GB-1082207-A (GB)
Title: Improvements in and relating to fastening devices
Inventor: BENNETT ALAN JAMES
IPC: F16B37/06
Filed: 1963-07-25
Abstract: 1,082,207. Screw sockets. FIRTH CLEVELAND FASTENINGS Ltd. July 17, 1964 [July 25, 1963], No. 29415/63. Heading F2H. [Also in Division E2] A fastening device 10 adapted to be fitted into an aperture (12a) of rectangular shape in a plate (12) and to be locked in the aperture by insertion of a screw into a longitudinal bore in the device comprises a nut portion 10a of non- circular cross-section and a deformable sleeve 10b extending from the nut portion and having at its outer end a flange 10c adapted to engage the plate (12), the sleeve being of square or rectangular cross-section at least over a part of its length adjacent the flange. The nut portion, sleeve and flange are moulded in one piece of nylon or other synthetic plastics material the bore in the nut being untapped. After insertion of the device in the aperture in the plate (12), a screw is inserted into the nut portion 10a. Rotation of the screw effects rotational displacement of the nut whereby the nut is drawn up to the rear face of the plate with its non-circular periphery out of register with the non-circular aperture by collapsing the sleeve in the axial direction.
Patent GB-652585-A (GB)
Title: Improvements in steel reinforcing cables for prestressed concrete elements
IPC: D07B1/06
Filed: 1948-11-12
Abstract: 652,585. Reinforced concrete. NAAMLOOZE VENNOOTSCHAP SCHOKINDUSTRIE. Nov. 12, 1948, No. 29419. Convention date, Dec. 10, 1947. [Class 20(iv)] A reinforcement for prestressed concrete comprises a steel cable having at most six separate strands twisted around the axis of the cable and each composed of at most four wires 5 twisted together. With this arrangement, concrete is able to reach and bond with all the wires forming the cable. The cable may have a core 3 of stranded wires, or a single wire of larger diameter than the wires forming the strands may be used as a core, or the core may be entirely omitted.
Patent GB-739742-A (GB)
Title: Improvements in or relating to solder fluxes
IPC: B23K35/02
Filed: 1953-10-23
Abstract: A solder flux of the zinc-ammonium chloride type, especially for use on a roll solder bath, contains a flux life extender in the form of a mass of individual particles of an inert, low density, heat expanded siliceous material amounting to at least 1 1/2 per cent by weight of the fusible flux ingredients. Such material may be expanded perlite (up to 16 per cent), exfoliated vermiculite (up to 12 per cent) or spherulized clay. 0.1-1 per cent by weight of a natural or synthetic resin may be included.  Other ingredients may be present, e.g. alkali metal chlorides, zinc oxide, zinc carbonate.  Specification 543,856 is referred to.
Patent GB-962580-A (GB)
Title: Method of making an article from thermoplastic material
IPC: B29C69/02
Filed: 1961-08-16
Abstract: 962,580. Injection and compression moulding. A. STRAHM. Aug. 16, 1961 [Aug. 17, 1960], No. 29514/61. Heading B5A. Thermoplastic material is injected into a mould 1 to give a blank 8, which is then, while still hot and pliable, engaged in a second mould formed from at least two elements 10, 11 which are movable with respect to one another, and pressed to the shape of the required article 12. A metal or plastic disc 14 may be contained in a cavity in the second mould 9 to be connected to the finished article, e.g. a tube cap 12.
Patent GB-800871-A (GB)
Title: Jet reaction units
IPC: F02K7/12
Filed: 1955-10-17
Abstract: 800,871. Jet propulsion plant. BERGER, M., and BOURCART, E. A. Oct. 17, 1955 [Oct. 22, 1954; Feb. 11, 1955], No. 29592/55. Class 110 (3). [Also in Group XII] A jet propulsion unit comprises a body the interior shape of which is constituted by a convergentdivergent inlet portion 3 followed by a cylindrical combustion chamber portion 4, a slightly convergent portion 5 and finally a cylindrical discharge portion 6. A venturi tube 18 is disposed within the convergent portion 13, the venturi discharging into the throat 14 of the convergent-divergent inlet 3 and a fuel supply conduit 20 opening into the throat of the venturi. Ignition means 33 are provided in the combustion chamber 4. The divergent portion 16 is formed by generators in the form of an involute of a circle followed by a parabolic curve. The body of the unit is formed of ceramic material reinforced by rings 2, and the body is surrounded by a casing 7 so as to provide an annular passage for flow of cooling air; a cowling 11 surrounds the casing 7 and heat-insulating material is disposed therebetween. The minimum area of the convergent portion 5 is greater than the area of the annular inlet between the convergent portion of the inlet portion 3 and the venturi tube mounted therein. A conical member 22 is mounted centrally within the divergent portion 16 and carries on its downstream face fuel injectors 24 which are connected by a duct 25 to a supply of liquid ammonia. The conduit 20 is connected to a supply of fuel such as petrol or kerosene. At the inlet of the unit an annular member 27 of parabolic section is mounted on axial rods 28 so that it may move axially, the member 27 being urged by springs 31 to the forward position shown in full lines, and being moved to the rearward position shown in chaindotted lines against the action of the springs by ram pressure when the unit is moving forward at a certain speed. The annular inlet opening is closed by the member 27 when in the rearward position. Movement of the rods 28 operates fuel control valves 21, 26 in the ducts 20, 25 respectively, the valve 26 being fully open when the member 27 is in the forward position, i.e. the starting position, whereby ammonia which is the starting fuel is admitted through the injectors 24. The ammonia is mixed with air supplied in the direction of the arrow f, and the mixture is ignited in the combustion chamber 4 and the gases discharge through the outlet 6; escape of gases in the forward direction is prevented by the member 27, and a pulsating combustion ensues. The member' 27 moves rearwardly with increasing speed of the unit and the valve 26 is gradually opened. Fuel is then admitted to the venturi tube 18 which with air admitted in the direction of the arrows f1 forms a mixture which burns in the combustion chamber 4, the unit then operating as a ram-jet propulsion unit. A jet propulsion unit A in accordance with the invention is shown combined with a convergent-divergent ram-jet unit 34 in Fig. 5, the unit A discharging into the throat of the ram-jet, and secondary fuel is admitted through injectors 39.
Patent GB-298788-A (GB)
Title: Improvements in or connected with conveyers of the belt type
IPC: B65G39/10
Filed: 1927-11-05
Abstract: 298,788. Mavor & Coulson, Ltd., and Davies, A. W. Nov. 5, 1927. Idler rollers for endless-belt conveyers; feet; antifouling guards.-The usual idle drum at the end of an endless-belt conveyer is replaced by a series of rollers B mounted in a carrier D cornprising sides, a top covering, and an outer end covering. A covering F for the lower run of the belt extends from a deflector E of the plough type to the lowest roller B. The carrier D, deflector E and covering F are mounted on a skid G.
Patent GB-1471475-A (GB)
Title: Floating containing vessels or booms for trapping liquid pollutants
IPC: E02B15/04
Filed: 1974-07-04
Abstract: 1471475 Booms J VIDILLES 4 July 1974 [16 Aug 1973] 29617/74 Heading E1H A boom for collecting pollutants on a water surface consists of an inflatable float 2 with a depending flexible skirt 3 which is weighted, e.g. by a chain 5 at its lower edge, and tethered or towed behind a vessel by the same chain 5. The depth of the skirt varied from a deepest section at the downstream end 8, to shallowest sections at the upstream edges 4, 4a. The chain may pass through a guide sleeve on the skirt, and the angle that the skirt makes with the current may be adjusted by varying the connection point 14 of a strap 12 with the chain. The skirt and float may be in sections connected together by plates which seal the sections together. Each float section may have one or more auxiliary floats in case the main float is damaged.
Patent GB-255705-A (GB)
Title: An improved demand meter for fluids
IPC: G01F1/52
Filed: 1925-11-24
Abstract: 255,705. Spitzglass, J. M. Nov. 24, 1925. Liquid - level pressure gauges. - The maximum demand by a customer for gas or other fluid during a given period is indicated by measuring the maximum difference of level between balance columns of liquid, the columns being subject to the pressures existing at different points in the fluid-supply conduit. In the Figure one leg 21 of a U-tube 13 containing mercury is connected directly to the inlet pipe 11 of an ordinary gas meter 10 and the other leg 22 opens into a vessel or chamber 15 which is connected by a pipe 16 to the outlet pipe 12 of the meter. When gas is being consumed the fall of pressure across the meter causes the mercury to rise in the leg 22 and provided that the demand is not merely momentary the mercury escapes through small perforations 23 into the chamber 15 and overflows into a graduated tube 17. The mercury overflowing into the tube 17 during a given period indicates the maximum demand during that period. The tube 17 is connected to the chamber 15 by a bushing 19 which allows it to be elevated and the mercury in it returned to the U-tube 13 when the instrument is required to be re-set for a new period.