baber/WOPTO huggingface dataset:
Patent GB-1414838-A (GB)
Title: Stop valves
IPC: F16K1/10
Filed: 1973-11-06
Abstract: 1414838 Valves HEPWORTH PLASTICS Ltd 6 Nov 1973 51455/73 Heading F2V A stop valve has a valve member 9, which is  slidable on a tube 7 and in a chamber 2, and is normally held on a seat 4 around an inlet 5 by inlet fluid pressure acting in chamber 2, port 11 and the bore 10 of the tube 7 communicating the chamber with the inlet. If a valve member 15 is moved axially in the tube by rotation of a captive knob 26 to cut off communication of the inlet with port 11 and open communication of the latter with a passage 12, 13 connected to the outlet 6 inlet fluid pressure moves the valve member 9 off its seat to connect the inlet 5 and outlet 6. The chamber 2 is defined by an insert 3 screw-threaded into the valve body 1 and which holds the seat 4 against the shoulder 18 in the body. The valve is made of acetal resin apart from seat 4, closure member 16 and seals 28, 29 which are all of neoprene.
Patent GB-1092963-A (GB)
Title: Improvements relating to the curing of unsaturated polyester resins
IPC: C08F283/01
Filed: 1965-12-03
Abstract: Unsaturated polyester resins are homopolymerized or copolymerized with an ethylenically unsaturated comonomer using as catalyst 3,5 - dimethyl - 3,5 - dihydroxy - 1,2 - peroxycyclopentane. The peroxycyclopentane is employed as a paste or liquid composition in an organic liquid selected from alkanols, glycols, ethers, ketones, esters, heterocyclic amides and heterocyclic alcohols.  Mixtures of two or more of such liquids may be present and water is also preferably present. Conventional metal activators and inhibitors may be present. In the examples, an unsaturated polyester formed from maleic and phthalic anhydrides and propylene glycol is copolymerized with styrene, in the presence of hydroquinone, using (a) the peroxycyclopentane, water, N - methyl-2-pyrrolidinone and triethyl phosphate; (b) cobalt naphthenate plus (a); (c) the peroxycyclopentane, water and N-methyl-2-pyrrolidone; and (d) the peroxycyclopentane, water and "Cellosolve" (R.T.M.) acetate. In (c) and (d) glass fibre laminates are formed.  Two component systems comprising (i) resin + promoter, and (ii) the peroxide catalyst system may be formed.ALSO:A stable solution of 3,5-dimethyl-3,5-dihydroxy - 1,2 - peroxycyclopentane is formed by using as solvent an organic liquid selected from alkanols, glycols including ether glycols, ethers, ketones, esters, heterocyclic amides and heterocyclic alcohols.  Mixtures of two or more of such liquids may be used and water is preferably also present.  Instead of a solution a paste may be formed by dispersing solid peroxycyclopentane in the organic liquid which is preferably a phthalate ester.  The concentration of the peroxycyclopentane is preferably such that the formulation has an active oxygen content of from 1 to 6% by weight. Preferably at least part of the solvent is an N-alkyl-2-pyrrolidone in which the alkyl group contains 1 to 4 carbon atoms.  Other preferred solutions are those in which at least part of the organic solvent is a propylene glycol or tetrahydrofurfuryl alcohol. Phosphate esters such as triethyl phosphate are preferably added to increase the burning resistance.
Patent GB-1414237-A (GB)
Title: Retroreflective structure
IPC: G02B5/124
Filed: 1973-11-06
Abstract: 1414237 Uses of luminescence ROWLAND DEVELOPMENT CORP 6 Nov 1973 [6 Nov 1972] 51476/73 Heading C4S [Also in Divisions G4-G6 and G2] A material having a different appearance in light with and without an U.V. component, e.g. daylight and artificial light comprises a retroreflective arrangement 12 behind a material 36 containing a transparent coloured fluorescent dye. Daylight having a substantial U.V. component produces fluorescence of a particular colour, e.g. orange, there being no retroreflective effect since daylight is diffuse. In artificial light with no U.V. component there is no fluorescence and when incident light is columnar, e.g. from car head lamps light is retroreflected back; in this case the dye acts as a filter and the reflected light is of a different colour, e.g. red. The material comprises a retroflective arrangement of cube carrier formations 12 on a substrate 14, a plastic film or coating 36 containing a fluorescent dye, a reflecting coating 30, a tacky adhesive layer 32 and a paper backing 34. The material is secured to a surface by the adhesive when the paper is removed. The dye may be painted on to the substrate and diffuse into it when a pattern is to be formed for use as a sign. Alternatively the dye may be incorporated in the material forming the retroreflective elements. These elements are of injection moulded acrylic polymer with a cube size of 0À004-0À008 inch or comprise spherical glass beads. The material is used for emergency warning road signs and decorative ornaments. Rhodamine and fluorescein dyes are referred to; an orange dye may be added to increase the contrast between daylight and artificial light appearance.
Patent GB-1456055-A (GB)
Title: Bearing assembly
IPC: F16C33/76
Filed: 1974-11-29
Abstract: 1456055 Bearings FORD MOTOR CO Ltd 29 Nov 1974 51924/74 Headings F2A and F2B A bearing assembly comprises a resilient seal 1 seated on one of two relatively rotatable parts 3, 5, the seal having two lips 7, 9 which engage and are resiliently deformed by surfaces situated at right angles to each other on the second of the two relatively rotatable parts; one said surface is provided by a collar 15 fitted against a shoulder 11 on the part 5. The part 3 may form the shaft of a motor vehicle wheel.
Patent GB-1270719-A (GB)
Title: Improvements in vacuum type circuit interrupter
IPC: H01H1/02
Filed: 1969-10-23
Abstract: 1,270,719. Vacuum switches. GENERAL ELECTRIC CO. 23 Oct., 1969 [1 Nov., 1968], No. 51941/69. Heading H1N. [Also in Division C7] The contacts of a vacuum switch are made of an alloy of aluminium with copper silver or nickel. A few per cent by weight of a weld inhibiting metal such as bismuth, tellurium or lead may be added. With copper the alloy should contain 9-15% of aluminium; with silver, 5- 10%; with nickel, 8-13%.
Patent GB-1431601-A (GB)
Title: Method for removing sulphur dioxide from a combustion exhaust gas
IPC: B01D53/77
Filed: 1973-11-09
Abstract: 1431601 Sulphur dioxide removal KUREHA KAGAKU KOGYO KK 9 Nov 1973 [10 Nov 1972] 52250/73 Heading C1A Exhaust gases containing SO 2  are purified by: (i) passing part of the gas over aqueous sulphuric acid to form a solution comprising sulphuric and sulphurous acids, which is then oxidized to form sulphuric acid, part of which is recirculated; (ii) passing the remainder of the gas, together with the exhaust from (i), over a solution of sodium sulphite, to form a solution comprising sodium bisulphite and a minor proportion of sodium sulphate as impurity; (iii) regenerating the sodium sulphite solution by treating the solution from (ii) with calcium hydroxide or calcium carbonate, and filtering off the precipitate of calcium sulphite; (iv) treating a portion of the solution from (ii) with a portion of the precipitate from (iii) and a portion of the sulphuric acid from (i) to precipitate the sodium sulphate impurity as calcium sulphate; and (v) recirculating the resulting solution to (iii).
Patent GB-1113682-A (GB)
Title: Tractors having power lift mechanisms
IPC: A01B63/112
Filed: 1965-06-03
Abstract: The subject matter of this application is included in Specification 1,113,681.
Patent GB-1447974-A (GB)
Title: Process for the production of gases containing methane from hydro carbons
IPC: C07C1/22
Filed: 1972-11-13
Abstract: 1447974 Methane-containing gases BRITISH GAS CORP 9 Nov 1973 [13 Nov 1972] 52382/72 Heading C5E Methane-containing gases are produced by the reaction of a feedstock comprising light paraffin hydrocarbons, e.g. naphtha, or methanol with steam, by passing the feedstock in the vapour phase, and steam into a bed of a nickel catalyst at a temperature of at least 300‹ C., such that the bed is maintained at a temperature within the range 400-550‹ C., and recycling at least a portion of the hot methane steam containing gases by mixing the recycled portion with further feedstock vapour and steam and passing the resulting mixture through the bed of nickel catalyst to produce further methane, the recirculation of the reaction gases being achieved by means of a vapour driven jet pump. The drive vapour for the jet pump is the process steam which is added to the recycle gas, with the additional feedstock admixed with the recycle gas at a point intermediate the jet pump and the catalyst bed, or a mixture of feedstock vapour and steam which is added to the recycle gas prior to the further catalysed reaction. The process may take place in an apparatus comprising a source of high pressure steam 1, a source of vapourized feedstock, e.g. hydrodesulphurization vessel 5, a nickel catalystcontaining reactor 7, means for recycling at least a portion of the reaction gas derived from the reactor to a vapour driven jet pump 2, which pump when in use is capable of being driven by high pressure steam from the source thereof, means for conveying the steam and recycled gas together with the feedstock from the region of the jet pump to the reactor and means, e.g. superheater 6, for maintaining the temperature of the total feed to the nickel catalyst in the reactor at at least 300‹ C. The product gas may be recycled via waste heat boiler 8, feed water heaters 9, knock-out pot 10, and flow control valve 4, or directly from reactor 7 via a cooler. The jet pump comprises a cylindrical section of frusto-conical shape connected by its narrower end to a substantially cylindrical mixing throat, there being disposed centrally in the frustoconical section a jet for the provision of high pressure steam, which jet terminates just before the mixing throat, and there being provided means for introducing recycled gas into the frusto-conical section.
Patent GB-526909-A (GB)
Abstract: 526,909. Fuel-injection pumps ; screw propellers. ENGLESSON, J. E. March 28, 1939, No. 9695. Convention date, March 29, 1938. [Class 102 (i)] [Also in Group XXXIII] An internal combustion engine drives a screw propeller and has a fuel injection pump 1 driven by a cam 4 adjusted axially by a centrifugal governor 6. It is desired to maintain the stroke of the pump constant and when the cam is in this position an arm 19 bridges contacts to light lamps 25, 26 at the manoeuvring position. The pitch of the propellers is adjusted in response to the signal to maintain this condition. With a constant pitch propeller, the drive is effected through a variable speed gear which is adjusted. Alternatively the condition may be maintained by adjusting the loading spring 15 of the governor 6. The above operations may be carried out automatically in response to movements of the arm 19. Specification 493,416, [Group XXXIII] is referred to.
Patent GB-1193520-A (GB)
Title: Improvements in or relating to Hypodermic Needle Assemblies
IPC: A61M5/34
Filed: 1967-11-22
Abstract: 1,193,520. Hypodermic syringes. BECTON, DICKINSON & CO. 22 Nov., 1967 [8 Dec., 1966], No. 53260/67. Heading A5R. The hub of a hypodermic needle is made of a flexible plastics material, having a low modulus of elasticity relative to plastics in general, and comprises a tubular portion (12) having at least one radial flange 16 defining a partial thread over its circumferential length and arranged to contact internal threads 32, 32a on the collar 30 of a syringe adaptor over its full circumferential length. The hub has a bore 24 having a taper which corresponds with a taper formed on the tubular tip portion 28 of a syringe barrel 26 which includes the collar 30, the cylindrical inner surface of which has two diametrically opposed helical threads (only one shown).
Patent GB-1464588-A (GB)
Title: High  speed printing apparatus
IPC: B41J2/215
Filed: 1974-12-10
Abstract: 1464588 Selective printing OKI ELECTRIC INDUSTRY CO Ltd 10 Dec 1974 [20 Dec 1973] 53277/74 Heading B6F A high-speed printing device using an ion flow in an ink mist 105 comprises a reservoir tank 115, a mist tank 113 which makes the mist 105 of uniform density, and a pump 112 for causing a mist flow past electrodes 101, 103. The required dot printing is produced by the ink covered ions passing through an aperture plate 104. Movement of the plate 104 and a copy sheet give the two components of movement necessary for the required printing.
Patent GB-1268182-A (GB)
Title: Electrolytic cell
Inventor: COOKE EDWARD VINCENT
IPC: B01D61/44
Filed: 1968-04-03
Abstract: 1,268,182. Preparation of amino compounds, quinones and dinitrites by electrochemical method. IMPERIAL CHEMICAL INDUSTRIES Ltd. 17 March, 1969 [3 April, 1968; 11 Nov., 1968], Nos. 16020/68 and 53342/68. Heading C2C. [Also in Divisions C6-C7] Using an electrochemical method organic nitro-compounds may be reduced to aminocompounds, e.g. the tri-sodium salt of nitro. naphthalene sulphonic acid may be reduced to the corresponding aminonaphthalene trisulphonic acid salt; phenols may be oxidized to quinones, e.g. phenol to benzoquinone; and mononitriles may be hydrodimerized to dinitriles, e.g. acrylonitrile to adiponitrile, with the acrylonitrile present in an aqueous tetraethyl ammonium phosphate solution which may also contain potassium toluene sulphonate, or in an emulsion. (Details of the electrochemical cells used appear in Divisions C6-C7].
Patent GB-1247342-A (GB)
Title: Improvements relating to monorail conveyors and locomotives therefor
Inventor: CARTWRIGHT DENNIS CHARLES
IPC: B61B13/04
Filed: 1967-11-24
Abstract: 1,247,342. Monorail locomotives. BECORIT (G.B.) Ltd. 20 Nov., 1968 [24 Nov., 1967], No. 53480/67. Heading B7L. An undergound monorail locomotive 1 comprises two bogies 7a, 7 of which one (or both) bogie 7 has hydraulic motors 29 which drive one or two single or duplex rubber-tyred wheels 14 and which are supplied with fluid by an engine-driven pump 9, one or two single or duplex counter-pressure wheels 17 being provided on a beam 20 pivoted to hydraulic piston-and-cylinder units 21 which urge the wheels 14 and 17 to grip the flanges 12 of the rail elements 10, and stabilizing wheels 28 engaging the webs 11 of the rail elements 10. The locomotive 1 is articulated at 16a to a load-carrying vehicle 2. The rail elements 10 are articulated end-to-end by coupling means described in Specification 1,159,746. The upper and/or lower faces of the flanges 12 may or may not be horizontal. Fluid is supplied to the units 21 by the pump 9 or a manual screw mechanism. The locomotive body may be articulated at its centre and supported thereat by a bogie. Single wide driving and counter pressure wheels 14, 17 may be used. Where two single or duplex driving wheels are used, one or two single or duplex counter-pressure wheels may be used.
Patent GB-1366592-A (GB)
Title: Heat transfer elements and methods of heat transmission between  a solid and a fluid
IPC: F28F13/18
Filed: 1972-11-21
Abstract: 1366592 Making heat exchangers H J SCHLADITZ 21 Nov 1972 [22 Nov 1971] 53813/72 Heading B3A [Also in Divisions F4 H5 and C7] Polycrystalline metal filaments 3, 4, Fig. 1, are attached in a heat conducting manner to a solid surface 1 to improve heat transfer between the surface and a fluid 5 in contact therewith. The filaments are typically from 0À1 to 50 microns diameter. They are of iron or nickel or they may comprise a ferromagnetic core coated with copper. In one method described for attaching the filaments to a heat conducting wall in a heat exchanger compartment, e.g. wall 8, Fig. 3 (or wall 13, Fig. 4), the filaments are placed loosely in the compartment, the wall is heated (e.g. electrically), and a thermally decomposable metal compound (e.g. a metal carbonyl) in the form of a vapour is passed through the compartment, metal being deposited from the vapour both at the points of contact of the filaments with the wall and also on the filaments themselves. The deposited metal is one having a thermal conductivity at least as high as that of the filaments, silver being mentioned as an example. Finally, in the method, any non-attached filaments are blown out of the compartment. The filaments may extend as fins across the heat exchanger compartment (Fig. 5) one such fin being shown in Figs. 5 and 6. It comprises a chain of the filaments which are arranged along lines of force of a magnetic field, as shown in Fig. 6, before being bonded to one another and to the compartment walls by deposition of metal as indicated above. In a further form described, an electric heating element (21, Figs. 8, 9) is coated with a layer (22) of varnish to which the filaments are attached. In a method of attachment the heating element is inserted through a tube, and the space between the element and the tube is filled with filaments. The element is energized to heat it up and the decomposable metal compound vapour is passed through the space to secure the filaments to the layer (22). Finally, unattached filaments are blown out and the element with the attached filaments is withdrawn from the tube.
Patent GB-1355058-A (GB)
Title: Thiophenols
Filed: 1970-11-13
Abstract: 1355058 Thiopenols IMPERIAL CHEMICAL INDUSTRIES Ltd 15 Oct 1971 [13 Nov 1970 13 Sept 1971] 54131/70 and 42538/71 Heading C2C  The invention comprises the compounds bis- (4 - mercaptophenyl) - ketone, 4 - chloro - 4<SP>1</SP>- mercapto - benzophenone, and 4 - chloro - 41- mercapto - phenylsulphone and a method for preparing these and other aromatic thiols which comprises reacting a benzoid compound having at least one halogen atom activated by an inert electron-attracting group which is phenylsulphone, alkylsulphone, cyano, trifluoromethyl, nitroso, hetero-nitrogen, or a bivalent group which can activate displacement of halogen(s) on one or two rings, with an alkali metal, ammonium, or organic onium disulphide in a proportion of from 1À0 to 2À0 moles of disulphide per gram atom of activated halogen to be replaced.
Patent GB-1367639-A (GB)
Title: Punching smooth-walled parallel-sided holes in or blanks from metal stock
IPC: B21D28/16
Filed: 1971-11-03
Abstract: 1367639 Punches and dies CITY OF NOTTINGHAM THE COUNTIES OF NOTTINGHAM & DERBY-THE CONSTITUENT AUTHORITIES OF and J C WESTWOOD 3 Nov 1971 [21 Nov 1970] 55453/70 Heading B3W The invention relates to apparatus for punching smooth-walled, parallel sided holes in, or blanks from, metal stock. For punching such holes, Fig. 2, the punch 4 has a first portion a of substantially constant cross-section connected by a taper portion b to an axially aligned second portion c of the same cross-sectional shape as the first portion but of greater cross-sectional area and the die 5 has a bore of substantially the same cross-sectional area and shape as the second portion of the punch. A die set incorporating a punch 4 and die 5, Fig. 4 (not shown), includes ball bearing bushes (20) a fixed stripper (6) and a self aligning shank (11) for engaging the press ram. For punching smooth walled blanks, Fig. 6, the die 30 has a first portion 31 of constant cross-section connected by a taper portion 32 to an axially aligned second portion of smaller cross-section and the punch 34 is of constant cross-section, the shape and area of which are substantially the same as those of the second portion of the die. The blank 39 is re-formed as it passes through the second portion 33 into a smooth-walled blank of the same dimensions as the leading face of the punch. The blank may be ejected by the punch 34 or by an upwardly-acting ejector.
Patent GB-1360641-A (GB)
Title: Gyromagnetic resonance spectrometers
IPC: G01R33/36
Filed: 1971-12-02
Abstract: 1360641 Gyromagnetic resonance spectrometers THOMSON-CSF 2 Dec 1971 [4 Dec 1970] 56088/71 Heading G1N In a nuclear magnetic resonance spectrometer, the sample spinning rate is measured by measuring the frequency of a modulation of the resonance signal produced by the spinning. The measured rate may be compared with a set rate to derive an error signal for controlling the supply of air to an air turbine spinning the sample. In Fig. 2, R.F. transmitter 18 feeds abridge 16 connected to a tuned circuit 9 coupled to a rotating sample 10. The bridge output is amplified at 19 and phase-detected at 20 against an in-phase reference signal from the transmitter to give an output signal which includes: an absorption component, modulated at an audio frequency # of a field modulation generator 26; a D.C. component due mainly to frequency error but including a small in-phase dispersion signal; and a component at the sample rotation frequency Wr. A band-pass filter 38 selects the # component which is then phase detected at 28 against a reference signal derived, with adjustable phase, from the audio modulation generator 26, and fed to a recorder 30 the time base of which is synchronized with the field sweep generator 34. A low-pass filter 40 selects the D.C. component, which is amplified at 42 and used to control the capacitance of a diode 60 in the tuned circuit 9 to cancel the frequency error. A bandpass filter 44 selects the Wr component which is measured at 46 to give an indication of the sample spinning rate. The input to filter 44 may come from the output of amplifier 42, filter 40 then passing both the D.C. and Wr components. In an alternative spectrometer Fig. 4 (not shown) using Bloch coils connected in respective tuned circuits, the frequency error is corrected by automatic adjustment of a non-absorbing paddle (70).
Patent GB-1235819-A (GB)
Title: Improvements in or relating to polymeric compositions
IPC: C08F26/06
Filed: 1969-11-17
Abstract: 1,235,819. Polymers of heterocyclic nitrogen compounds. SYBRON CORP. 17 Nov., 1969 [30 Dec., 1968], No. 56196/69. Heading C3P. A colour-stable odour-free polymer is prepared by polymerizing an aqueous suspension of a polymerizable heterocyclic nitrogen compound, in the presence of 0À25 to 3À0%, based on the weight of heterocyclic nitrogen compound, of an additive comprising an organic non-aromatic water-soluble compound containing at least one available hydrazino or hydroxylamino radical, i.e. at least one of the hydrazino or hydroxylamino radicals of the additive are in the free base form and at least one amino group thereof is unsubstituted. In the examples (1) 2-vinyl pyridine and 2-methyl-5-vinyl pyridine are copolymerized with azo-bis-butyronitrile in the presence of hydrazine hydrate, semi-carbazide free base or amino guanidine; (2) 2-vinyl pyridine and sytrene are polymerized with azo-bis-butyronitrile in the presence of hydrazine hydrate; (3) 2-vinyl pyridine, styrene and acrylonitrile or dimethylamino ethyl methacrylate are polymerized with azo-bisbutyronitrile in the presence of hydrazine hydrate; (4) 2-methyl-5-vinylpyridine is polymerized with azo-bis-butyronitrile in the presence of thio-semi-carbazide or a hydroxylamine free base solution; and (5) 2-vinyl pyridine and 2 - methyl - 5 - vinylpyridine is polymerized with azo-bis-butyronitrile in the presence of unsymmetrical -N,N<SP>1</SP>- dimethyl hydrazine. Alkyl cellulose and gum arabic are added as suspending agents.
Patent GB-1166194-A (GB)
Title: Improvements in or relating to Machine Tools
Inventor: MEYER HENRY FREDERICK
IPC: B23B31/26
Filed: 1967-04-24
Abstract: 1,166,194. Machine tool details. MONARCH MACHINE TOOL CO. 24 April, 1967, No. 56255/67. Divided out of 1,166,193. Heading B3B. A tool holder for a machine tool comprises a chuck for insertion in the tool spindle 14, and for securing the adapter 20 of a tool 15. The adapter is located in a socket 80 and is held against rotation and axial movement by latches 83, 84 which co-operate with flats 35 in a groove 34 in the adapter. The latches are held in the locking position by a sleeve 88 urged downwardly by a spring 93, and are pivoted, so as to release the adapter, by pistons 98, which are actuated and force a ring 79 upwardly into engagement with a flange 89 on sleeve 88. The sleeve moves against spring 93 and engages heels 106, 107 on the latches. The tool holder is used in the machine tool described in the parent Specification.