baber/WOPTO huggingface dataset:
Patent GB-733947-A (GB)
Title: Manufacture of bis-(ª‰-hydroxyalkyl-) polysulphides
Filed: 1953-03-19
Abstract: Bis - (b  - hydroxyalkyl) polysulphides are prepared by reacting a 1,2-alkylene oxide with an alkali-metal polysulphide or alkaline-earth metal polysulphide in an aqueous medium and neutralizing the base liberated in the reaction as it is formed in such a manner that the reaction mixture does not become acid. Thus stoichiometric amounts of 1,2-alkylene oxide and of an alkali-binding substance may be introduced simultaneously into an aqueous solution of the alkali metal or alkaline earth metal polysulphide.  Specified alkali-binding agents are sodium bicarbonate, buffer solutions containing acetates, borates, phosphates and the like, mineral acids and, preferably, carbon dioxide.  The preferred reaction temperatures are from about 30 DEG  to 90 DEG  C.  The alkylene oxide, which include ethylene, propylene and 3-hydroxy-propylene 1 : 2 oxides, may be used in gaseous or liquid form.  It is preferred to employ a mixture of sodium monosulphide and sulphur, rather than sodium polysulphide, the latter then forming in situ.  In examples: (1) a mixture of carbon dioxide and ethylene oxide is passed into an aqueous solution of sodium sulphide and sulphur yielding bis-(hydroxyethyl) polysulphide of a sulphur content of 33 or 42.8 per cent depending on the sulphur content of the initial reaction mixture; (2) ethylene oxide is passed into an aqueous solution of sodium sulphide and sulphur while sulphuric acid is added dropwise with agitation; a bis-(hydroxyethyl) polysulphide is obtained and this product and the second product of (1) are catalytically hydrogenated to thioglycol.
Patent GB-255372-A (GB)
Title: Improvements in frames for spectacles or the like
IPC: G02C1/08
Filed: 1926-03-19
Abstract: 255,372. Dicker, S. G. S., (Quandt 0. [Firm of]). March 19, 1926. Spectacles.-Frames for spectacles of the type provided with a pin on which each side wire is pivoted are constructed with the pin formed integrally with the frame portion. The pin c, formed integrally with the frame a to act as a pivot for the side wire b may pass through the side wire into a recess in the opposite side of the frame or may consist of two short pins integral with recessed portions of the frames, the pins entering the hole in the side wire.
Patent GB-553856-A (GB)
Title: Improvements in or relating to sliding clasp fasteners
IPC: A44B19/12
Filed: 1942-06-08
Abstract: 553,856. Sliding-clasp fasteners. STEVENS, A. H. (Dow Chemical Co.). June 8, 1942, No. 7807. [Class 44] In a sliding-clasp fastener comprising a pair of interlocking helical coils, at least one of the coils is made from material of uniform non-circular crosssection to provide major and minor diameters and the material in each convolution or in alternate convolutions is given one or more twists to provide a part in which the minor diameter is parallel to the coil axis preceded and followed by parts in which the major diameter is parallel to the coil axis. For example, starting with tape-like material of rectangular cross-section with the major diameter parallel to the coil axis, it may be given a twist through 90 degrees in either direction, followed by a further twist through 90 degrees in the same or opposite direction. The twisting provides points at which positive interlocking between the coils occurs. Fig. 1 shows coils 3, 4 wound in opposite senses and having twists 3<1>, 4<1> which provide interlocking at both sides of each convolution. Fig. 2 shows the appearance of the coils when viewed in the direction of arrows A, B, Fig. 1. The coils may be of the same sense and the convolutions of approximately circular form, but preferably they are of oval or other flattened form, Fig. 23, which shows a convolution twisted at one side only. The flattening may be effected during or after the winding of the coil. When the twists are provided in one coil only, the co-operating coil is of uniform cross-section of any suitable shape, including circular. The coils are secured to the stringer tapes 1, 2 in any usual way and are operated by the usual slider 7. In Fig. 1 the upper ends of the coils are capped by stop members 5, 6, the lower ends being provided with a socket member 12 and a member 13 having a spike (not shown) which engages a socket in member 12 so that the stringers are separable in known manner. The fastener is operable with the slider disposed either way round and two oppositely disposed sliders may be provided. The Specification gives examples of suitable non-circular cross-sectional shapes for the material, which may be metallic, or non- metallic. The major diameter is at least 1.2 times, and preferably 1.5 times the minor diameter. Amongst suitable non-metallic materials, which may be coloured, organic plastics such as solid polymers of styrene, vinyl chloride, vinylidene chloride, methyl methacrylate and resinous co-polymers of such compounds with other unsaturated organic compounds are mentioned.
Patent GB-126460-A (GB)
Title: Manufacture of Mordant-dyeing Azo-dyestuffs and Matal Compounds thereof, and their Application in Dyeing.
Inventor: IMRAY OLIVER
IPC: C09B45/24
Filed: 1918-05-09
Abstract: 126,460. Imray, O., (Soc. of Chemical Industry in Basle). May 9, 1918. Monoazo and disazo dyes are obtained by diazotizing an amide or arylide of an o-aminophenol sulphonic acid and coupling with azo-dye components, or by tetrazotizing an aminoarylide or imide of an o-aminophenol sulphonic acid and coupling with two molecules of an azo-dye component or with one molecule each of two components. Soluble metal (copper, chromium, nickel, &c.) compounds of the dyes can be obtained by the processes described in Specifications 26460/12, 1611/15, 15127/15, 15456/15, 16803/15, or 104,045. The metal compounds dye wool in acid baths; or the parent dyes may be dyed on wool in acid baths and after-treated with metal salts, or such salts may be added to the dye-baths. Examples are given of the preparation of the dyes and their copper, chromium, and nickel compounds. The properties are tabulated of the following dyes, and the copper and chromium compounds thereof :-monoazo dyes from : diazotized 2 - aminophenol - 4 - sulphonamide and 2 : 6- or 1 : 3 - naphthol sulphonic acid, 1 : 3: 6-, 1 : 3 : 8-, or 2 : 3 : 6 - naphthol disulphonic acid, or 1 : 8 : 3 : 6 - dioxynaphthalene disulphonic acid ; 2-aminophenol-4-sulphonanilide and #-naphthol or 1 : 8 : 3 : 6-dioxynaphthalene disulphonic acid; 4-methylphenylamide of 2-aminophenol-4-sulphonic acid and 1 : 8 : 3 : 6-dioxynaphthalene disulphonic acid; 3-carboxyphenylamide of 2-aminophenol-4-sulphonic acid and #-naphthol; 4- oxy-3-carboxyphenylamide of 2-aminophenol- 4-sulphonic acid and #-naphthol; 4-sulphophenylamide of 2-aminophenol-4-sulphonic acid and acetoaceticanilide; disazo dyes from : tetrazotized 4 - aminophenylamide of 2 - aminophenol - 4-sulphonic acid and two molecules of 1:4- naphthol sulphonic acid, one molecule each of 1 : 4-naphthol sulphonic acid and #-naphthol, or one molecule each of 1-p-sulphophenyl-3- methyl-5-pyrazolone and #-naphthol; the imide of 2-aminophenol-4-sulphonic acid and two molecules of 1-pheuyl-3-methyl-5-pyrazolone, #-naphthol, or m-toluylenediamine. Sulphonamides; sulphonimides.-The intermediate products described above are prepared by condensation of o-halogennitroaryl sulphochlorides with amonia, an arylamine or substitution product thereof, or an o-halogennitroaryl sulphonamide; the halogen atoms in the condensation products are then replaced by hydroxyl groups by means of alkali and the nitro groups are then reduced, e.g. by sodium sulphide. Examples are given of the preparation of 2-aminophenol-4-sulphonamide, 2-aminophenol-4-sulphonanilide. 4-aminophenylamide of 2-aminophenol-4-sulphonic acid, and the imide of 2-aminophenol-4-sulphonic acid.
Patent GB-303302-A (GB)
Title: Improvements in and relating to the drawing apparatus of cotton spinning machines
IPC: D01H5/22
Filed: 1928-03-14
Abstract: 303,302. Fournell, A. March 14, 1928. Rollers and. roller heads. - In spinning- machines for cotton, wherein a pair of small rollers is mounted behind the delivery rollers and the top roller thereof is in light pressure contact with the material, at least three pairs of rollers 2, 2<a>, 3, 3<a>, 4, 4<a>, are arranged between the feed and delivery rollers, the distances a - d and the diameters of the rollers decreasing progressively. Suitable dimensions are given for the diameters and pitch of the rollers, whereby drafts of forty may be effected and the intermediate and roving frames eliminated.
Patent GB-1493503-A (GB)
Title: Method and device for sucking up a solid substance from a stock
IPC: E02F3/88
Filed: 1975-02-25
Abstract: 1493503 Suction dredging BALLAST-NEDAM GROEP NV 25 Feb 1975 [25 Feb 1974] 7879/75 Heading E1F [Also in Division B8] To permit of a satisfactory withdrawal of one fraction of solid substances from a heterogeneous stock of several solid substances, e.g. substances as occurring in underwater dredging operations, a segregation fluid is introduced into the stock at such a distance from a suction nozzle 4 through which the selected fraction is to be removed from the stock that only the selected fraction is subjected to the action of the nozzle 4 as the introduced fluid creates in the stock a segragation zone from which the selected fraction flows towards the nozzle whilst the remaining fractions of the stock flow in a direction away from the nozzle. Preferably the fluid is pressurised water issuing from nozzles 6 located about and rearwards of the suction nozzle 4 for adjustment axially thereof, the axial movement being controlled by sensors 13, 15 that record pressures at different levels in the stock. A controlled supply of water 60 can be injected into the selected fraction to control the consistency of the selected fraction to an optimum value as it enters the nozzle 4. The remaining fractions may be removed from the stock by other nozzles 10. The apparatus involved in the above method is disclosed as being for emptying barges of cargo and supplying foundation material to discharge apertures in the bottom zones of submerged tunnel sections from a sea bed zone remote from the tunnel sections.
Patent GB-591366-A (GB)
Title: Improvements in or relating to electrical control systems
IPC: A63H19/24
Filed: 1945-03-29
Abstract: 591,366. Control of several D.C. motors. BENFORD, P. R. March 29, 1945, No. 7900. [Class 38(iii)] Two model locomotives are driven by D.C. motors 1, 2 which are polarized by recifiers 3, 4 and are fed with pulsating current in both directions from rectifiers 6, 7 so that they can be controlled selectively by rheostats 8, 9. The locomotives may be equipped with commutating switches for reversing the rectifier connections which, in the case of motors with permanent magnets, also changes the direction of rotation of the motors. In the case of motors with field windings the direction of rotation is changed by means of a switch for reversing the connections of the field winding. Similar arrangement may be provided for each of two or more circuits associated with a single track.
Patent GB-308793-A (GB)
Title: Improvements in or relating to absorption refrigerating machines
IPC: F25B15/10
Filed: 1929-03-11
Abstract: 308,793. Siemens - Schuckertwerke Akt.-Ges. March 28, 1928, [Convention date]. Refrigerating, absorption systems for.-In a continuous-cycle system of the kind comprising a generator 5, gas separator 8, absorber 3, reabsorber 2, and cold producer 1, an ice-making chamber 18 is disposed in the pipe 12 through which the weak solution from the cold producer passes to the re-absorber. An inert gas such as air circulates through the absorber 3 and the cold producer 1, and superfluous liquor in the cold producer flows through a liquid seal 17 with the absorber.
Patent GB-1414919-A (GB)
Title: Thick or thin film circuits
IPC: H01P7/08
Filed: 1973-02-19
Abstract: 1414919 Resonant circuits AB ELECTRONIC COMPONENTS Ltd 14 Feb 1974 [19 Feb 1973] 7942/73 Heading H1W A thick or thin film circuit element comprises a conductive layer having areas to be maintained at the same R.F. potential, such areas being interconnected by a short-circuit path of significantly lower resistance than the conductive layer. The tuned circuit shown comprises a thick film 1 providing a co-planar transmission line tuned by a capacitor 3. Areas 2, 4 are intended to operate at the same R.F. potential and, to this end, are interconnected by a conductive path provided by the screening enclosure 5. The enclosure may provide such a short-circuit for a member of similar circuits mounted on the same substrate. The shortcircuit may alternatively be provided by a flexible gauze or mesh.
Patent GB-235972-A (GB)
Title: Improvement in or relating to motive power engines
IPC: F02B75/06
Filed: 1924-03-29
Abstract: 235,972. Stahlberger, A. F. W. March 29, 1924. Driving gear. - Relates to internal-combustion and other reciprocating engines of the class wherein two parallel or substantially parallel and oppositely rotatable, crank shafts are disposed symmetrically in relation to the path of the piston, the length of the connecting rods being sc proportioned in relation to the crank radius and the distance between the twc shafts that in the lower end position of the piston stroke the piston cross pin 10 will lie, as indicated at 10<1>, between a plane containing the crank axes 7, 8 and a line tangant to the crank circles on the piston side, the angle between the connecting rods in such end position of the piston being slightly less than 180‹, and is characterized by the feature that the directions of rotation of the shafts 7, 8 are such that the effort of the piston during the combustion and expansion stroke will be transmitted to the crank shafts through an angle of the crank circles considerably exeeding 180‹.
Patent GB-128342-A (GB)
Title: Improvements in or relating to Electric Relays or Switching Devices.
Inventor: HEAP ARTHUR CECIL
IPC: H01H37/50
Filed: 1918-05-14
Abstract: 128,342. Heap, A. C. May 14, 1918. Clockwork actuation, electrically - released switches; retarding devices; thermal switches. -In a relay of the " hot wire " type, the moving parts are balanced so that, if the relay receives a blow, it will not be affected and the contacts will be unmoved. The wire 10 is strained between fixed and adjustable supports 11, 12 and plucks aside a lever 3 connected at its ends to levers 7 pivoted about their middle; a second lever 3<1> is used to balance the lever 3, being also pin-jointed to the levers 7. The levers 7 carry extensions 19 on the end of which are damping-vanes 23. To the spindles of the levers 7 are attached clock springs contained in boxes 9. One of the extensions 19 carries one of the relay contacts, the other 18 being on the base of the instrument. The wire 10 normally holds the contacts open against the action of the clock springs, but, when heated by any current passing therethrough, lengthens and allows the contacts to close. In place of the vanes used to damp the movement, pneumatic or Foucault-current devices may be used; or the spindles of the levers 7 may carry disks moving in chambers containing vaseline, or the spindles may carry cylinders between which and fixed cylinders a film of oil is placed. In a modification, the wire engages with a pin 33, Fig. 3, on one of two inter-engaging toothed wheels 34, 35 carrying rods on which bear springs 42. One of the rods has a stop 38 for a contact spring 39; when the wire 10 lengthens, the springs 42 move the rods slightly and allow the spring 39 to snap on to the fixed contact 41. This arrangement can be used to release a brake on a clockwork-actuated switch.
Patent GB-728866-A (GB)
Title: Improvements in and relating to steel reinforcements for reinforced concrete structures
IPC: B60N2/70
Filed: 1953-03-24
Abstract: 728,866. Reinforced concrete. E V G ENTWICKLUNGSUND VERWERTUNGSGES. March 24, 1953 [April 25, 1952; Feb. 10, 1953], No. 8107/53. Class 30 (4). A reinforcement for concrete structures comprises two parallel rods 1 of high yield-point steel, short connecter pieces 2 welded to the rods and arranged perpendicular thereto at intervals exceeding the distance between the rods, the connecter pieces having flat surfaces perpendicular to the axes of the rods to provide bearing faces for the concrete. Preferably the rods 1 are spaced at a distance substantially equal to their own diameter, but preferably not less than 0.8 inch when the diameter is less than this. A suitable spacing for the connecters is ten times the diameter of the rods, but not exceeding 8 inches. The connecters may be of steel of a lower yield point than the rods. The reinforcement may be used as a single rod reinforcement, pretensioned or otherwise, or it may be incorporated into a grid by arranging a number of such reinforcements in spaced parallel relationship and welding transverse rods' thereto. The transverse rods may be plain rods or may be reinforcements made as described above.
Patent GB-413434-A (GB)
Title: Improvements in mounting of the wheels of mechanically propelled road vehicles
IPC: B60G15/06
Filed: 1933-03-17
Abstract: 413,434. Fluid - actuated valves. AUBIN, E., Elmstead, West Wittering, Sussex, and CLAREMONT, A. W., Vernon House, Sicilian Avenue, Bloomsbury Square, London.- (Representatives of ROYCE, SIR F. H.) March 17, 1933, No. 8123. [Class 135.] In a motor vehicle having independently mounted wheels supported by resilient means comprising both a spring and an hydraulic damper, the latter is provided with a doubleended piston j<1> slidably supported by sleeves f<3>, h<2> in a cylinder c whereby liquid may be transferred through a fixed tube j<3> that passes through the piston and has one end controlled by a valve p<8>. The stem p<7> of the valve p<8> is secured to a plate l<1> which is variably loaded by a spring m<2> surrounded by a bellows ml, the effort of the spring being augmented by admitting oil under pressure to the interior of a chamber p<2> containing the bellows. Surrounding the stem p7 is a piston p<9> adapted to abut against the plate l<1> and working in a cylinder p<5> forming part of a fixed casting p<1>, the part p<5> being in turn surrounded by a portion p<4> of another casting p, and overlapping ports n<3>, n<4> being formed in the parts p<4>, p<5>. Should a lever arm i cause the piston j<1> to be displaced to the right, liquid is forced through the tube j<3> and opens the valve p<8> directly, subsequently passing via the parts n<3>, n<4> to the left hand end of the piston j<1>. If the piston j moves to the left, liquid is forced inwardly through the ports n<4>, n<3>, the pressure acts upon the piston p<9> and thus on the plate l<1>, the valve p<8> is again opened, and liquid is transferred through the tube j<3> to the right-hand end of the piston j<1>.
Patent GB-344674-A (GB)
Title: Improvements in or relating to burglar alarms
IPC: G08B13/22
Filed: 1930-03-13
Abstract: 344,674. Burglar alarms. C.E.M.A. CONSTRUCTIONS ELECTRO - MECANIQUES D'ASNIERES, 236, Avenue d'Argenteuil, Asnieres, Seine, France. March 13, 1930, No. 8169. Convention date, May 7, 1929, Addition to 339,863 [Class 118 (i), Indicators &c.] [Class 118 (i).] In a burglar alarm as described in the parent Specification, in order to distinguish normal noises occurring throughout the night from noises resulting from a prolonged attack on the walls or other parts of the building, a recording device is used to make a record of the normal nightly disturbances detected by the microphones, and the sensitiveness of the apparatus may be adjusted so as to eliminate the effect of such disturbances. For this purpose a rheostat may be arranged to work either in series with the microphones or as a potentiometer in the input circuit of the first valve. If the microphone circuit includes a step-up transformer for actuating the first valve grid, the rheostat may be placed as an adjustable shunt on the primary circuit.
Patent GB-752372-A (GB)
Title: Aqueous amine solutions and a method of reducing corrosion of corrodible metal surfaces in contact with aqueous amine solutions
IPC: C23F11/06
Filed: 1954-03-22
Abstract: Aqueous amine solutions, for use in dissolving a normally gaseous inorganic acidic compound, contain a minor proportion of an alkali metal orthophosphate; the amine is normally liquid or solid, has a boiling point not substantially below 100 DEG C., and does not contain oxygen in the form of a carbonyl or carboxyl group.  During the regeneration by heating of such a solution, corrosion of metal surfaces in contact with the solution is reduced.  Suitable orthophosphates, which may be present in an amount of 0.1-3 per cent by weight of the amine solution, are trisodium phosphate, tripotassium phosphate, trilithium phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, lithium dihydrogen phosphate, sodium potassium hydrogen phosphate, and sodium dipotassium phosphate.  Amines specified are hexylamine, diproplyamine, trimethylenediamine, mono-ethanolamine, diethanolamine, triethanolamine, methyldiethanolamine, benzylamine, phenylethylamine, methylphenylamine, cyclohexylamine, ethylcyclohexylamine, and tetrahydroortho-toluidine.  The solution may contain more than 50 per cent by weight of an aliphatic liquid polyhydric alcohol, e.g. ethylene glycol, diethylene glycol, triethylene glycol, and propylene glycol.  A solubilizing agent for the phosphate may also be present; examples are watersoluble carboxylic acids, e.g. acetic acid, and water-soluble phenols, e.g. phenol and/or cresol. Processes in which the amine solutions may have been used are the recovery of carbon dioxide from flue gases, the recovery of sulphur dioxide from roasting furnace gases, and the removal of carbon dioxide, sulphur dioxide, and hydrogen sulphide from natural gas, refinery gas, water gas, or hydrogen.  Corrosion of iron, steel, aluminium, "Monel" metal (Registered Trade Mark) or nickel is prevented at temperatures above 100 DEG C.  Tests are described showing the effect on corrosion of various proportion of phosphates and water in the amine solutions.
Patent GB-941331-A (GB)
Title: Improvements in drying and/or calcining apparatus
IPC: F26B17/28
Filed: 1961-03-07
Abstract: 941,331. Drying apparatus; calcining granular materials. E. B. BANFIELD. March 7, 1961, No. 8298/61. Headings F4B and F4G. Apparatus for drying and/or calcining comprises a bank of rollers positioned one above the other so that material to be dried or calcined falls from one to the other, and means for heating the rollers. The material is fed into a casing 4 from a hopper 9 by a control rotor 10. The rollers 3 are slightly offset from the centreline of the casing 4, are staggered in relation to one another and have outwardly projecting flanges 6 whereby the material is conveyed around them. They may be heated by electrical elements 7 mounted between diametrically opposed pairs of arms 8-8 extending radially from a tubular shaft 5 about which they rotate. Alternatively, the elements may be embedded in the rollers or a circulating fluid may provide the heat for them. Heat control is by thermostat.