baber/WOPTO huggingface dataset:
Patent GB-428030-A (GB)
Title: Improvements in or relating to machines for cutting or resharpening the reeds of wind instruments
IPC: B27G17/02
Filed: 1934-12-17
Abstract: 428,030. Cutting or resharpening reeds of wind instruments. SOC. C. CHEDEVILLE, A. LELANDAIS & CIE, and DULAC, P., La Couture Boussey, Eure, France. Dec. 17, 1934, No. 36200. [Class 145 (i)] A machine for cutting or resharpening reeds for wind instruments comprises a frame 1 having detachably secured thereto a table 7, having a surface 8 on which the reed is mounted and a pattern surface 9 having a shape corresponding to that of the desired finished reed. A rod 3 slides and turns in the frame 1, and has at its outer end a member 5 to which is pivoted at 6 an arm 12 on which is mounted a roller 13 which runs on the pattern surface 9. The arm 12 carries a cutting blade 17 and a counterblade 16 ; the blade 17 can be adjusted in the direction of its length by means of a screw 19 having a ball head engaging a notch in the end of the blade 17 ; the blade is positioned laterally by screws 22 and is secured in adjusted position by a screw 23.
Patent GB-885740-A (GB)
Title: Ammunition
Inventor: GULLEY RONALD ALWYN
IPC: F42B30/02
Filed: 1958-11-11
Abstract: 885,740. Ammunition cartridges. OLIN MATHIESON CHEMICAL CORPORATION. Nov. 11, 1958, No. 36237/58. Class 9(1). A cartridge comprises a rim-fire case 1 in which is fixed a bullet 4 of lead or other metal, the bullet nose tip 6 being part of a sphere of radius about 0.4 calibres standing on a chord about 0.4 calibres long, the tip 6 being about 2.8% of the total length of the bullet which is about 2.1 calibres. The driving band 7 has annular grooves 9, 11, 13 containing lubricant and the foremost land 8 of the band has a bevelled edge 17, which may be formed by moulding or swaging but preferably by rolling after the bullet is inserted in the case. The bullet may have a concave rear surface 16. U.S.A. Specifications 1,879,278 and 1,892,759 are referred to.
Patent GB-785045-A (GB)
Title: Purification of terephthalic acid
Inventor: O'NEILL WILLIAM ALEXANDER
Filed: 1954-12-15
Abstract: Terephthalic acid is purified by heating it under pressure with water containing an oxidizing agent having no oxidizing effect on the terephthalic acid itself, continuing the heating until solution occurs, preferably to above 200 DEG  C., cooling the resultant solution and allowing terephthalic acid to crystallize out. Oxidizing agents specified are potassium or sodium permanganate, chromic acid or derivatives thereof such as potassium or sodium dichromate, chromium trioxide, manganese dioxide or mixtures thereof. The treatment may be preceded by a simple recrystallization of the terephthalic acid from water under pressure, or by treating it in aqueous solution under pressure with a reducing agent which does not reduce the terephthalic acid itself.  Reducing agents mentioned are sodium hyposulphite, titanous sulphate, sulphur dioxide, hydrogen sulphide, nascent hydrogen, phosphorous acid and stannous chloride. Examples are given.
Patent GB-1122910-A (GB)
Title: Improvements in supersonic convergent-divergent jet exhaust nozzle
Inventor: MEHR HANS PETER
IPC: F02K1/12
Filed: 1966-08-15
Abstract: 1,122,910. Jet propulsion plant. GENERAL ELECTRIC CO. Aug. 15, 1966 [Dec. 8, 1965], No.36435/66. Heading F1J. A supersonic convergent-divergent propulsion nozzle for a gas turbine engine comprises flaps 20 pivoted to the jet pipe 24 at 22 to form the convergent portion and flaps 28 pivoted to a shroud 25 surrounding the jet pipe by way of linkage 52 and a series of wall members 36 to form the divergent portion. A further series of flaps 32 is pivoted to the shroud 35 at 33 and connected to flaps 28 and members 36 by springs 62. The annular chamber 70 bounded by flaps 20, 28 and members 36 is supplied with by-pass air from a passage (11), Fig. 1 (not shown), surrounding the engine compressor, and which may contain a fan, such that the pressure differential across flaps 28 and members 36 controls the position of the flaps without the need for mechanical actuators. The air pressure in chamber 70 is controlled by adjustment of the inlet area (11a) of the by-pass passage (11) or by mechanically adjusting linkage 52 to vary the leakage of air through gap 50 into the hot gas stream. In the subsonic operating condition shown in Fig. 3, flaps 32 make an angle # with the shroud 35, but during supersonic operation the change in differential pressure acting on flaps 28 and members 36 causes the nozzle to "float" to a position, Fig. 2 in which flaps 32 make essentially zero angle with the shroud and abut flaps 28 at their downstream ends. In a modification, Figs. 5, 6 (not shown), the downstream portions of the flaps (72) corresponding to flaps 32 form part of the diverging portion of the nozzle during supersonic operation. The construction reduces external drag.
Patent GB-926388-A (GB)
Title: Trouser-press
IPC: A47G25/72
Filed: 1959-10-28
Abstract: 926,388. Trouser presses. J. E. P. DE DUBE. Oct. 28, 1959 [Oct. 28, 1958; June 9, 1959], No. 36586/59. Class 141. [Also in Group XIV] In a trouser press comprising a fixed back plate 10, a pivoted front plate 13, upper and lower clamping plates 19, 20 resiliently mounted on the fixed plate, and pivoted bent levers 16 on the sides of the fixed plate which allow the pivoted plate to be swung away from, or pressed against, the fixed plate, means are provided for locking the pivoted plate in an intermediate position with the lower clamping plate gripping the ends of the trouser legs. To lock the plate in an intermediate position, the levers 16 may have stepped portions 29 cooperating with rollers 30 provided on the edges of the pivoted plate. In a modification, Fig. 19, the plate is locked in the intermediate and forward positions 60, 62, respectively, by means of pins which project beyond its side edges and engage in depressions 59 in a spring 57 secured to the base of the press. A pedal also may be provided for pressing the lower clamping plate against the front plate. The pivoted plate may be concave towards the fixed plate and it may have a central longitudinal groove in its back face.
Patent GB-412976-A (GB)
Title: Apparatus for the treatment of living tissues by means of ultra short waves
IPC: H03B5/34
Filed: 1932-12-30
Abstract: 412,976. Valve generating circuits. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Dec. 30, 1932, No. 36922. Convention date, Jan. 13. [Class 40 (v).] In apparatus for therapeutic treatment with ultra-short wave oscillations having a generator producing oscillations corresponding to a wavelength between 2 and 5 metres and a treatment circuit coupled with the generator, preferably loosely, both circuits include apparatus, e.g. variable condensers, whereby the frequency of the oscillations can be accurately adjusted to <1> /10 metre. According to the arrangement shown in which a thermionic valve is used as the oscillator, the frequency of the oscillations is varied by condenser 7 having a value of the order of the internal capacity between anode and grid of the valve. The whole generator is enclosed in a metallic casing 13 and is coupled to the treatment condenser 12 by means of a tunable circuit including condenser 11. Symmetrically - arranged tuned circuits 8, 9 and 10 are provided in the supply leads to the anode and filament to facilitate the production of large quantities of energy. The frequency may be maintained constant by crystal control, or frequency fluctuations may be checked by a wavemeter and suitably corrected. Reference has been directed by the Comptroller to Specifications 304,587, [Class 81 (ii)], and 390,247.
Patent GB-1107989-A (GB)
Title: Fuel injection systems for internal combustion engines
Inventor: SKIPWORTH RICHARD TEFT
IPC: F02D41/06
Filed: 1963-09-09
Abstract: 1,107,989. Transistor monostable circuits. ASSOCIATED ENGINEERING Ltd. 9 Sept., 1964 [9 Sept., 1963], No. 36987/64. Heading H3T. [Also in Divisions F1 and G1] A monostable multivibrator in a fuel injection control circuit includes transistors TR1, TR2 and timing capacitor C1 In the rest state TR1 is off and TR2 is on, the voltage at the collector of TR1 being determined by a first control voltage V1 supplied from an emitter follower (TR9, Fig. 3, not shown). When a negative trigger pulse is supplied at T2, TR1 is turned on and TR2 switches off, producing a negative voltage at its collector for application via capacitor C2 to emitter follower amplifier stages TR5, TR6. Capacitor C1 meanwhile discharges through constant current transistor TR4, the current through which is controlled by second control voltage V2. When the voltage at the base of TR2 reaches a predetermined value, the multivibrator relaxes. Transistor TR3 then provides a low impedance charging circuit for the capacitor.
Patent GB-302584-A (GB)
Title: Improvements in or relating to piezo-electric devices
IPC: H04R17/02
Filed: 1928-12-14
Abstract: 302,584. Telefunken Ges. f³r Drahtlose Telegraphie. Dec. 17, 1927, [Convention date]. Drawings to Specification. Piezo-electric pressure gauges.-A piezo-electric microphone or pressure indicator and an associated amplifying-valve are constructed as a single unit, in order to avoid long leads from the crystal to the valve input electrodes. Supply current to the valve electrodes, and the amplified output currents, are taken through flexible leads, leaving the unit freely portable. For indicating oil pressures in switch casings, the amplifying- valve is arranged in a protective case.
Patent GB-1444274-A (GB)
Title: Metal compositions
IPC: C22C1/10
Filed: 1973-08-03
Abstract: 1444274 Dispersed phases in alloys MASSACHUSETTS INSTITUTE OF TECHNOLOGY 3 Aug 1973 [7 Aug 1972] 37073/73 Addition to 1400624 Heading C7D [Also in Division B3] A metal or alloy which forms a dendritic structure when frozen from its liquid state without agitation, is agitated while in a liquid-solid state to convert the solid portion to primary solids comprising discrete degenerate dendrites and to prevent the formation of inter-connected dendritic networks, wherein third phase liquid or solid particles are added to the agitated metal or alloy and dispersed therein. The agitation of the liquid-solid mixture may be effected by counter rotating blades, electromagnetic stirring or gas bubbling. The third phase material may be added in steps, the composition being heated between each addition to increase the amount of secondary phase liquid present. This process may be continued until all the primary solids have been liquified. When the desired composition has been formed, it can be cooled to form an ingot which later may be re-heated until it attains a thixotropic state and then cast by forcing it into a die cavity. Alternatively, the composition, which comprises degenerate dendritic primary solids suspended in a secondary phase, the said secondary phase also having the said third phase particles dispersed therein, may be cast directly after the third phase material has been added to the mixture. The third phase material forms from 3-65 wt. per cent of the total composition, suitable materials including graphite, metal carbides, sand, glass, ceramics, metal oxides and metals. Suitable metals and alloys include Fe, Cu, Al, Pb-Sn, Zn-Al, Zn-Cu, Mg-Al, Mg-Al- Zn, Mg-Zn, Al-Cu, Al-Si, Al-Cu-Zn-Mg, Cu-Sn, Cu-Zn, super alloys, Co-Cr, steels, tool steels, stainless steels, and cast iron. Examples describe the preparation of compositions comprising an Al alloy containing 4.14%si and 1.8% Fl to which has been added one of the following: 10 or 20 wt. per cent of glass particles of 20 to 40 micron size, 20 wt. per cent of silicon carbide particles of 44 micron average size, 10 or 30 wt. per cent of aluminium oxide particles of 44 micron size, and 3 wt. per cent of titanium carbide particles of 1 to 5 micron size.
Patent GB-886258-A (GB)
Title: Fuel nozzles
Inventor: BOTTOMS HARRY SIMISTER
IPC: F23D11/38
Filed: 1959-11-02
Abstract: 886,258. Fuel nozzles. LUCAS (INDUSTRIES) Ltd., JOSEPH. Oct. 25, 1960 [Nov. 2, 1959], No. 37075/59. Class 75(1) A fuel nozzle comprises a tubular member 1 having a seating 8 at its fuel discharge end for a valve 10 held closed by a coiled tension spring 12 one end of which engages a helical groove on the stem of the valve and the other end of which engages a helical groove on a reaction member 13. The reaction member 13 is secured by a transverse pin 14 to a sleeve 11 disposed within the tubular member 1. The fuel passes through a circular mesh filter 3 having a peripheral plastic ring 4 resting within the bore of the tubular member 1. The valve is opened by fuel pressure.
Patent GB-840162-A (GB)
Title: Improvements in production of titanium
IPC: C25C3/28
Filed: 1958-11-20
Abstract: 840,162. Depositing titanium. NEW JERSEY ZINC CO. Nov. 20, 1958 [Dec. 17, 1957], No. 37398/58. Class 41. In the method of electrodepositing titanium on a cathode immersed in a molten mass of chloride salts composed essentially of (a) at least one titanium chloride in which the titanium has a valency less than four, and (b) a diluent salt mixture having a melting-point not substantially higher than 450‹ C. and comprising at least two of sodium chloride, potassium chloride and lithium chloride, the salt mixture has a composition within the area ABCDEFGA in the drawing, the cathode with its deposit of titanium and entrained molten salts is removed substantially directly into the ambient atmosphere while the molten salt mass is maintained at not more than 100‹ C. above its melting-point, and the deposit is thereafter separated from the cathode. Titanium may be introduced into the molten bath as the tetrachloride, or from a crude titanium anode, and is converted to lower chlorides in the bath. The deposit is preferably stripped from the cathode while the entrained salt is still molten.
Patent GB-1364547-A (GB)
Title: Apparatus and method for sensing the position of a surface
IPC: G01B13/00
Filed: 1971-08-10
Abstract: 1364547 Gauging; copying JOHNSON SERVICE CO 10 Aug 1971 [10 Aug 1970] 37562/71 Headings B3B and B3K [Also in Division G3] Apparatus for sensing the surface 3 of an object 1, e.g. for copy machining a workpieoe 7 with a tool 6 from the shape of the object 1, or in welding or measuring equipment, comprises a sensor unit 4 which carries a nozzle 8 for establishing a fluid sensing stream 9 between the nozzle 8 and the surface 3 to be sensed, a fluid amplifying means 10, and a positioning motor means 11 coupled to the amplifying means, the sensor unit 4 being adapted to supply, to an input of the amplifying means 10, a fluid control signal which varies in accordance with the free length of the sensing stream 9, and the positioning motor means being coupled to be controlled by the output signal of the amplifying means to determine the position of the sensor nozzle 8 relative to a reference position member 12, the motor means having a linear response to the said output signal, and the amplifying means and the motor means in operation maintaining a predetermined constant free length of the sensing stream. The control signal is created by back pressure in a fluid supply line 17 which acts through the fluidio amplifier 10 to vary the pressure in a bellows unit 13 of the motor means and also to vary the position of the tool 6. In other embodiments the apparatus is used to gauge a spiral surface of a rotating cylinder (Fig. 2, not shown), to measure the width of an object between two oppositely facing nozzles (Fig. 3, not shown); to measure the diameter of a hole (Fig. 4, not shown); and to maintain a nozzle continuously in position relative to a reference plane (Fig. 5, not shown). The fluid may be air or liquid or a mixture thereof. A physical read out of the movement of the nozzle 8, or the output of the amplifier 10, may be provided. The amplifier 10 is of the summing impact modulator type in which two streams 23, 24 from the pressure supply 18, via restrictors 19, 22, impact within a chamber so that variation in the back pressure control signal varies the position of impact and produces variations in the output lines to the units 4 and 5. Variations of the amplifier are described.
Patent GB-1396742-A (GB)
Title: Oscillating centrifuge
IPC: B04B3/06
Filed: 1972-08-11
Abstract: 1396742 Centrifuge KLOCKNER-HUMBOLDT-DEUTZ AG 11 Aug 1972 [14 Aug 1971 15 June 1972] 37619/72 Heading BID A centrifuge basket 6 is connected to plate 4 and connected to the rotary driving means 9 through carrier body 7, thrust element 8 and adjustable member 23. The centrifuge basket is lined up and tension means 30 are slackened until a frictional engagement is attained. The drum is oscillated by shaft 12.
Patent GB-1501243-A (GB)
Title: Coating composition
IPC: C09D183/02
Filed: 1975-09-12
Abstract: 1501243 Silane containing coatings SUMITOMO CHEMICAL CO Ltd 12 Sept 1975 [13 Sept 1974] 37627/75 Heading B2E [Also in Division C3] A coating which may be applied to polymethyl methacrylate comprises (i) at least one partially hydrolysed tetra-alkoxysilane, (ii) at least one partially hydrolysed silane R n Si(OR<SP>1</SP>) 4-n , wherein R is a C 1-6  hydrocarbyl radical, R<SP>1</SP> a C 1-4  alkyl radical and n is 1 or 2, (iii) a copolymer of an alkyl (meth)acrylate and a hydroxyalkyl (meth)acrylate, (iv) an etherified methylolmelamine, and (v) a solvent, there being used 10-100 pbw of (ii), calculated as R n SiO 4-n  5-200 pbw of (iii), and 0-150 pbw of (iv) per 100<SP>2</SP> pbw of (i), calculated as SiO 2 . There may also be present catalysts (e.g. acids, alkali, metal carboxylates, cyanates, nitrites, and tin compounds), and surfactants, UV absorbers, pigments and antistatic agents. In Examples Si(OEt) 4  is cohydrolysed with MeSi(OEt) 3  in 2:1 or 15:11 wt. ratio or Me 2 Si (OEt) @  in 5:1 or 10:1 wt. ratio in a similar weight of a mixture of isopropanol and 0.05N HC1 (30 or 35 wt. % of the latter). 100 pbw of the product solutions are mixed with (iii) 5-20 pbw of a 4:1 copolymer of butyl acrylate and hvdroxyethyl methacrylate, a 2:2:1 lauryl acrylate/butyl acrylate/hydroxyethyl acrylate, or a 5:1 ethyl acrylate/hydroxypropyl acrylate copolymer. (iv) 0 or 2-3 pbw of hexabutoxymethyl melamine. and 0.4 pbw of Na acetate or KCNS or 2 pbw of HCl, and in one case 0.2 pbw of a silicone surfactant. The mixture is dissolved in 60:40:20 butanol/acetic acid/xylene.
Patent GB-1468285-A (GB)
Title: Hydraulic vane pumps
IPC: F04C14/22
Filed: 1974-08-28
Abstract: 1468285 Rotary positive-displacement fluidmachines PARKER-HANNIFIN CORP 28 Aug 1974 [24 Sept 1973] 37632/74 Heading F1F In an hydraulic sliding-vane pump having a rotor 21 and cam ring 26 for the vanes 39 sandwiched between non-rotary plates 24, 25, which have inlet and outlet openings 62, 63, 69, 70, 80, 81, 83, 84 for the working fluid, means are provided to prevent direct contact between the plates and the rotor and cam ring. The plate 25 is biased towards the rotor by discharge pressure applied to an outer face 158 of the plate between sealing rings 165, 166 through a channel 156 and opening 157, said pressure also being transmitted to a groove 124 lined with sealing rings 170, 171 through a passage 125 and one of several openings 122 interconnecting said groove and flow-restricting grooves 121, which intersect grooves 120 on the inner side of the plate. The groove 124 also communicates with grooves 135 through openings 137 and flowrestricting grooves 136. Fluid flowing radially from the grooves 120, 135 is collected in a groove 141 and in a space circumjacent the plate, the groove and space being inter-connected by passages 142, 143, and the space being connected to a reservoir (not shown) by a passage 146. The pressure reductions caused by the grooves 121, 136 allow the pressure in the groove 124 to deflect the peripheral portion of the plate towards the cam ring and keep the clearance between the plate and ring constant. To prevent direct contact between the plate 25 and the rotor the outlet opening 154 communicates with grooves 150 through grooves 153 and flowrestricting grooves 152. Somewhat similar provisions are made in the plate 24, which although it is not pressure loaded has grooves 100, 104 communicating with the outlet openings 67 .. 70 through grooves 107, 108, 112 and openings 109, and a collection groove 115 communicating with the passage 146 by way of grooves 103. Pins 72, 88 prevent the plates rotating. The cam ring may be either fixed or movable transversely to vary the output, Fig. 2 (not shown). The plate 24 may be identical with the plate 25.
Patent GB-932244-A (GB)
Title: Preparation of polyethylene terephthalate from terephthalic acid and ethylene glycol
IPC: C08G63/82
Filed: 1959-11-09
Abstract: Polyethylene terephthalate is made by (1) mixing 1 mol. of purified terephthalic acid with 2-20 mols. of ethylene glycol, (2) increasing the temperature of the mixture to about 220 DEG -240 DEG C. and subjecting it to a pressure of at least 25 p.s.i.g. whilst continuously removing the liberated water, (3) after the evolution of water substantially ceases removing excess glycol from the mixture by distillation and (4) maintaining the resulting mixture at an elevated pressure and under a reduced pressure until a highly polymeric product is obtained.  The purified terephthalic acid is that obtained by the processes of either of Specifications 932,245 and 932,246 or that obtained by dissolving crude terephthalic acid in an aqueous solution of potassium hydroxide, adding activated carbon, filtering the solution to remove the carbon and thereafter precipitating the terephthalic acid with hydrochloric acid.  The reaction mixture may also include (a) a compound having a sulphonic acid type group as described in Specification 904,445, (b) certain monohydric polyalkylene oxides and hydroxy polyalkylvinyl ethers as well as polyols having a functionality greater than 2 as described in Specification 847,090, or (c) certain high molecular weight aliphatic dicarboxylic acids.  In examples these additional compounds were (12) and (14) methoxypolyethylene glycol and pentaerythritol; (13) 1,20-eicosanedioic acid; (15) potassium 3,5-dicarboxybenzene sulphonate.  Specification 777,628 also is referred to.
Patent GB-830505-A (GB)
Title: Machine for producing helical seam tubing
IPC: B01D46/00
Filed: 1956-12-12
Abstract: 830,505. Coiling helically jointed tubes; seaming. SPIRO INTERNATIONAL A.S. Dec. 12, 1956 [Dec. 20, 1955], No. 37961/56. Drawings to Specification. Classes 83 (2) and 83 (4). [Also in Group XXIII] The subject-matter of this Specification is substantially the same as that described in Specification 830,504 but the claims differ.
Patent GB-1274045-A (GB)
Title: Carrier bag
IPC: A45C3/04
Filed: 1969-07-29
Abstract: 1,274,045. Carrier bags. WINDMÍ LLER & HÍLSCHER. July 29, 1969 [July 31, 1968], No. 38014/69. Heading A4G. In order to prevent tearing at points a where a handle is joined to bag wall, reinforcing, tearresistant patches 4, 4<SP>1</SP> are cemented to the inside of opposite walls which may be of paper, parts of each handle are adhesively secured to the patches and a cover patch 5, 5<SP>1</SP> of different dimensions is adhered inside the bag over the parts of each handle secured to the reinforcing patches. The covering and/or reinforcing layers may be peripheral mouth strips or patches; e.g. of cardboard or paper or the same with inserts of threads or fabrics, or plastics foil.
Patent GB-925877-A (GB)
Title: Improvements in and relating to cushioning or shock-absorbing devices
Inventor: BROSCOMB DENNIS GEORGE
IPC: F16F9/48
Filed: 1959-11-10
Abstract: 925,877. Hydraulic dampers. G. D. PETERS & CO. Ltd. Oct. 20, 1960 [Nov. 10, 1959], No. 38077/59. Class 108(3). In an hydraulic shock absorber a double acting piston arrangement comprises a pair of piston parts 8, 8a, Fig. 1, having limited movement on the piston rod 2 and constituting selfacting valve means to control the flow of fluid past the piston arrangement when the parts enter reduced diameter portions 5 of the cylinder 1. The piston parts 8, 8a have longitudinal through passages 10 which are closed by the engagement of the parts 8, 8a against resilient rings 11 in a backing member 7 which is rigidly attached to the piston rod 2. Flow between opposite ends of the cylinder is controlled by restriction passages 12 having adjustment plugs 16.