baber/WOPTO huggingface dataset:
Patent GB-689498-A (GB)
Title: Improvements in and relating to synthetic resin adhesives
IPC: C08L61/24
Filed: 1950-07-20
Abstract: A fusible heat-hardenable resin useful as an adhesive is made by modifying a fusible heat-hardenable urea-formaldehyde resin by reaction with less than 10 per cent, preferably 1-5 per cent, by weight of the final product, of a hydrolysed vinyl ester polymer or vinyl ester ethylene interpolymer.  The initial urea-formaldehyde resin should be compatible with the vinyl polymer which should have a hydroxyl content not less than 21 per cent, preferably from 24.4 to 38.6 per cent (100 per cent hydrolysis).  The urea-formaldehyde ratio is preferably between 1 to 1.7 and 1 to 2.1.  Specified vinyl esters are the formate, acetate, propionate, butyrate, isobutyrate, oleate, stearate, benzoate and naphthenate.  In a modification formaldehyde, urea and the hydrolysed vinyl polymer are reacted together. Preparation of the initial resin.-170 parts of 37 per cent formaldehyde and 60 parts of urea are reacted for 30 minutes at 30 DEG  C. and pH 7.0-7.5, the temperature is gradually raised to reflux (30 minutes) and the solution refluxed for 30 minutes.  The pH is then adjusted to 5.0-5.2 and the solution refluxed until a sample clouds in cold water.  The solution is then adjusted to pH 9.0-11 and rapidly cooled.  Modifying the initial resin.-To the resin solution is added the desired vinyl polymer, and sufficient water to give a viscosity after reaction suitable for spreading and giving initial tack; (about 25-60 per cent solids).  The mixture is reacted at 30-60 minutes at reflux.  The final solution may be spray-dried to give a solid resin redispersible in water.  The resin may be set hot or cold, uncatalysed or catalysed, e.g. with 0.2 per cent ammonium chloride and 0.8 per cent hexamine.  Examples.-(1) 523 parts of the initial resin solution (40 per cent solids) are diluted with 357 parts water, 11 parts of an ethylene/vinyl acetate interpolymer (5 per cent ethylene, 97 per cent acetate radicals hydrolysed) are added and the mixture refluxed for 60 minutes and cooled.  (2) 905 parts of the initial resin solution (50 per cent solids) are diluted with 169 parts water, the pH adjusted to 10.5-10.7 and 15 parts of 77 per cent hydrolysed polyvinyl acetate added.  The mixture is heated at 92-98 DEG  C. until a viscosity of 100-140 cps. at 25 DEG  C. is obtained (2-3 hours).  The pH is adjusted to 9.2-9.5, the solution diluted to 40-70 cps. and spray dried.  The redissolved resin is used to make paper board from Kraft paper, curing at 150 DEG  C. for 3-15 seconds or for 1-7 days at 26 DEG  C.; (3) 67 parts 37 per cent formaldehyde, 24 parts urea and 1.5 parts 99 per cent hydrolysed polyvinyl acetate and refluxed for 30 minutes at 97-99 DEG  C.  The pH is adjusted to 5.2 and the mixture reacted until a viscosity of 350 cps. at 25 DEG C. is obtained.  The pH is adjusted to 7.7 and the solution cooled. A table of properties and tests of resins modified with 0, 1, 3 and 5 per cent modifier is given.
Patent GB-859830-A (GB)
Title: Improvements in or relating to sound receivers
IPC: H04R11/00
Filed: 1957-06-07
Abstract: 859,830. Microphones. SCHOEPS, K. June 7, 1957 [June 9, 1956], No. 18241/57. Drawings to Specification. Class 40 (4). The component parts of an electromagnetic sound receiver are so designed that the frequency curve approaches that of a more expensive type of microphone. In the lower part of the transmission range the diaphragm oscillates in a predominantly frictionally or mass retarded state. In the upper part of the range the oscillation is predominantly elastically retarded.
Patent GB-1111562-A (GB)
Title: Heat exchanger arrangements
Inventor: BRYAN JOHN GORDON
IPC: F28D7/02
Filed: 1964-05-01
Abstract: 1,111,562. Agitating liquids. AERO-HYDRAULICS Ltd. 29 April, 1965 [1 May, 1964], No. 18242/64. Heading B1C. [Also in Division F4] Circulation of a fluent substance in a vat F to promote heating or cooling, and where appropriate, mixing of the substance, is effected by a stream of air or gas injected into the substance from a device D, causing circulation of the substance through a heat exchanging riser duct E, as denoted by the arrows H. The fluent substance may comprise a liquid or liquid-like substance which is to be heated or cooled, or a mixture of liquids or liquids and solids. The riser duct E may be electrically heated, or as shown, it may comprise a tube coil around which or within which a further tube coil may be wound. Alternatively the riser duct may comprise an upright jacketted tubular member.
Patent GB-838096-A (GB)
Title: Improvements in or relating to printed electric circuits and method of producing them
IPC: H05K3/10
Filed: 1956-06-13
Abstract: In the manufacture of a printed electric circuit (see Group XXXVI), the conductor portions comprises a nickel-phosphorus layer deposited from a nickel hypophosphite bath on to an insulating board whose surface is previously prepared and activated by roughening and treating with palladium chloride and a reducing agent.  The portions of the activated surface which are not to be plated are covered with an insulating lacquer; thereafter the nickel-phosphorus layer is deposited in two stages. Firstly the surface is given a nickel flashing by immersing in a bath at room temperature and comprising nickel hypophosphite, orthoboric acid, ammonium sulphate and sodium acetate in defined proportions together with sufficient sulphuric acid or caustic soda to adjust its pH value to the range 5.5 to 6.0. Then the board is rinsed, pickled in sulphuric acid and rinsed once more, after which it is subjected to the second stage of the plating process in a bath heated to between 200 DEG  and 210 DEG F. and comprising nickel sulphate, sodium hypophosphite malic acid, and sodium succinate in defined proportions with its pH adjusted to be between 5.8 and 6.0.  Alternatively, a bath comprising nickel sulphate, sodium hypophosphite, lactic acid and propionic acid with a pH between 4.5 and 4.7 may be used.  This plating step continues for about 15 to 30 minutes to build up a nickel-phosphorus layer approximately 0.25 to 0.5 mil thick; the board is then removed to an oven and heated for 30 minutes at 325 DEG F. to effect thorough drying and degassing.  The nickel-phosphorus conducting layer may subsequently be coated with an electrolytically deposited copper layer.
Patent GB-1026518-A (GB)
Title: Improvements relating to filing cabinets
IPC: B42F15/06
Filed: 1963-05-08
Abstract: 1,026,518. Filing papers &c. HARPER & TUNSTALL Ltd., and A. K. ASHBURNER. May 8, 1964 [May 8, 1963], No. 18277/63. Heading B6E. A filing cabinet for drawings comprises a front panel 2 hinged at its lower edge, and telescopic filing members 7, 8 secured to the front and rear panels, respectively. The members 8 are of inverted U- section and the members 7 of solid circular-section. The members 7, 8 slop downwardly from the front to the rear of the cabinet. Further, the members 7, 8 are so shaped and positioned that they do not touch each other during opening and closing of the front panel.
Patent GB-1312651-A (GB)
Title: Electronic pulse devices
IPC: G01P15/16
Filed: 1970-04-17
Abstract: 1312651 Differentiating circuits ROBERT BOSCH GmbH 17 April 1970 [19 April 1969] 18354/70 Heading G4G [Also in Division H3] The circuit shown, comprising an integrator 14 and a monostable circuit 11, is used to detect changes in the frequency of pulses 112 applied to an input terminal 12. The pulses trigger the monostable circuit 11 to produce a square-wave output which, in the absence of the integrator 14, would have a mark-space ratio dependent upen the pulse-repetition frequency. Part of the output is fed to the integrator which produces a voltage proportional to the mark-space ratio and compares it with a constant voltage from a source 15. The output of the integrator is fed back to the monostable circuit 11 and used to regulate the pulse length in such a manner that the mark-space ratio tends to a constant value. This constant value is determined by the value of the constant voltage. The resultant signal 113 is fed to output terminal 13. A low-pass filter (which may be omitted from the circuit) converts the square-pulse signal to a virtual D.C. which has a constant value 117 during those periods when the mark-space ratio of the square-pulse output is constant. At times when the p.r.f. of signal 112 is changing, the mark-space ratio will increase or decrease according to whether the p.r.f. is increasing or decreasing and the D.C. signal will increase or decrease by an amount 118 or 119 proportional to the rate of change. The duration of the increase of D.C. output is an indication of the duration of the p.r.f. variation. The pulses 12 may represent the velocity of a vehicle wheel and the D.C. output used to detect acceleration and deceleration.
Patent GB-1466269-A (GB)
Title: Liquid-level sensors
IPC: G01F23/24
Filed: 1974-04-29
Abstract: 1466269 Liquid level indication MULLARD Ltd 29 April 1974 [17 April 1973] 18439/73 Headings G1H and G1N A liquid level sensor, e.g. for sensing the water, oil or brake fluid level in a vehicle or the water level in a washing machine, comprises an encapsulated semi-conductor thermistor 4 secured to one side of a holder 2 through which extend tubular connectors 9, 10, in which electrical leads 5, 6 to the thermistor are secured, the thermistor being adjacent a wall of its encapsulation so as to allow heat exchange between the thermistor and any liquid surrounding the sensor. The thermistor 4 may be encapsulated in, and soldered to one wall of, a sealed metal can 3 as shown in Fig. 2, the lead 6 being connected to the can wall and the lead 5 via a metal strip 8 to the thermistor 4, both leads 5, 6 extending through a glass seal 7. Instead of a can, the thermistor can be encapsulated in a glass coating. The holder 2, for attachment to the wall of a liquid container, is of plastics, e.g. polypropylene, or other insulating material and comprises a boss 21, shoulder portion 22 and two partially cylindrical lugs (25), 26 to be positioned around the encapsulated thermistor. As in Figs. 4-6 (not shown) holes (27), (28) in the holder 2 accommodate the tubular connectors 9, 10 for external leads 15, 16 connected to leads 5, 6. In an alternative embodiment Figs. 7-10 (not shown) the holder 2 has two main body portions (30), (31) connected by two struts (32), (33) which accommodate the tubular connectors 9, 10. The leads 15, 16 may be connected in series with a battery (18) and signal lamp (17), as in Fig. 3 (not shown), such that the lamp will light or not depending on whether the sensor is immersed in liquid.
Patent GB-253376-A (GB)
Title: Folding cot
IPC: A47C19/14
Filed: 1925-07-20
Abstract: 253,376. Knudsen, H. L. A. H. July 20, 1925. Mattresses. - Folding bedsteads with lazy-tong sides have the supporting surface carried by springs arranged between it and the sides of the cot. As shown in Fig. 1, transverse chains h are connected at both ends to springs g connected three to each bar f, these bars being movably connected by fastenings e to members c of the lazy tongs. Chains k connect each set of three chains h which are internally spaced by rods j. Chains d connect the ends of the spring surface to the head and foot members. In the modification shown in Fig. 3, flexible bands h<1>, k<1> form longitudinal and transverse members preferably connected at their crossing points, metal clips m attached to the ends of the transverse members carrying two springs g at an angle to one another connected to a ring n connected by a ring o attached to fastenings e on the side frame members c.
Patent GB-683496-A (GB)
Title: Air filter
Inventor: NORGREN CARL AUGUST
IPC: B01D46/24
Filed: 1950-07-24
Abstract: 683,496. Drying air. NORGREEN CO., C. A. July 24, 1950, No. 18483/50. Class 34 (i) [Also in Group II] A filter for removing moisture from the air supply of machine tools pneumatically lubricated has a hollow casing having an upper section 3 and a lower section 4 which are transparent and are clamped together by rings 5a, 5b between which is annular partioning member 7 having air inlet 9 and outlet 10. The member 7 is centrally apertured at 13 and a fine mesh tubular screen 14 extends into bowl 4 providing the only passage therefrom into bowl 3 and a discharge outlet 15 for separated liquid is provided at the lower part of bowl 4. Another screen 16 extends upwardly into bowl 3 from an imperforate tube 17 and is surrounded by filter medium 18 of cotton-thread on other absorbent material chemically treated with cobaltous chloride to act as a colour indicator of moisture content. An annular groove 20 in the member 7 communicates with outlet 10. A small tube 11 depends from member 7 and has its lower end closed, a series of small ports 12 being arranged to discharge the incoming air into the bowl 4 tangentially and cause cyclonic motion, some moisture being precipitated. The air then passes through screens 14, 16 and absorbent 18 to outlet 10 the colour of the absorbent changing from blue to pink as the water content increases. Reference has been directed by the Comptroller to Specification 651,008, (Group XXVIII].
Patent GB-1147782-A (GB)
Title: Improvements in or relating to aircraft
Inventor: ORAZI PAOLO
IPC: B64C39/00
Filed: 1966-04-27
Abstract: 1,147,782. Rotary wing aircraft. P. ORAZI. 27 April, 1966 [27 April, 1965], No. 18490/66. Headings B7G and B7W. An aircraft, which may be a towed glider, comprises a primary longitudinal structure c, formed with a pylon b for a wing a which rotates about its own spanwise axis. When constructed as a towed glider the wing is mounted at the aft end of the longitudinal structure and a front undercarriage wheel e is steered by a forwardly projecting arm f to which a towcable h is attached.
Patent GB-256603-A (GB)
Title: Improvements relating to time-lag electro responsive devices
IPC: H01H71/44
Filed: 1926-07-26
Abstract: 256,603. British Thomson-Houston Co., Ltd., (Assignees of Townsend, G. R.). Aug. 5, 1925, [Convention date]. Automatic circuitbreakers &c. - The switch member 14 is held in the " on " position shown in the Figure, against the action of a spring 17 by a latch 19 which is itself held in position by the straightened-out toggle links 21 until the core of an underload-release. magnet 28 falls and allows a pin 27 on a weighted lever 25 to break the toggle. The lever 25 carries a pawl 32 engaging a train of wheels so that a time interval elapses before release is effected. The invention is shown applied to a motor starting switch 14 which has three positions, the " running " position shown in which a member 10 engages a series of contacts 12, a " starting " position in which it engages a series of contacts 13 and an " off " position midway between. Movement into the " starting " or " running " position causes the member 10 to carry with it one of two levers 15, 16 connected by the spring 17 so that the latter always acts to bring the parts into the " off " position. When in the " off " position a notch 24 in the latch 19 prevents the lever 14 from being moved into the " running " position until it has passed through the " starting " position.
Patent GB-421826-A (GB)
Title: Improvements in distributors for powders or like substances
IPC: A01C15/02
Filed: 1933-06-30
Abstract: 421,826. Powder distributers. MILTON, W. T., 29, Westmount Road, Eltham, London. June 30, 1933, No. 18614. [Class 18] A device for distributing relatively coarse powdered substances, such as fertilizers, comprises a fabric bag 1, preferably damp-proof, into the bottom of which is fitted a reticulated screen 3, which for storage and sale may be covered with a paper or cardboard disc. A frame 2 and stiffening-ring 4 may be provided. The screen may be removably secured to the outside of the frame by bolts and nuts, or it may take the form of a cone, the central part of which projects into the bag and is unperforated. Two relatively adjustable screens may be provided to vary the size of the openings. The device is stated to be applicable as a sugar caster. Specification 156,821, [Class 18], is referred to.
Patent GB-274477-A (GB)
Title: Improvements in or relating to the electro-deposition of copper or its alloys
IPC: C25D3/38
Filed: 1927-07-13
Abstract: 274,477. Sundberg, H. E. July 13, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Copper and alloys, depositing; electrolytes, protecting. - The electrolyte contains cuprous chloride or other cuprous halide, chloride or other halide of an alkali or alkaline earth metal or ammonium or a mixture of such added in order to increase the solubility of the cuprous salt and to improve the conductivity, and a third constituent which increases the cathode potential. The third constituent may consist of compounds of other metals or carbohydrates or complex-formers such as gelatine and peptone or organic amino-, quinone-, aromatic or aliphatic compounds or their derivatives or alkaloids or dyestuffs; it may be added in colloidal form. The third constituent may be added as a protective layer covering the electrolyte; it produces the desired effect by solution or emulsification. Oils are not suitable for this purpose. Alloys of copper with zinc, tin or nickel or with more than one of these metals may be deposited by addition of suitable compounds to the bath.
Patent GB-510045-A (GB)
Title: Improvements in or relating to book binding machines
IPC: B42B5/12
Filed: 1938-06-23
Abstract: 510,045. Bookbinding. THORNTON, A. A. (Parallex Corporation). June 23, 1938, No. 18649. [Class 16] A bookbinding-machine for threading the coils of a wire spiral in spaced apertures arranged near one end of a set of leaves includes a shelf for the leaves and wire spiral, the latter being initially engaged with some of the apertures, a single combined guiding and winding roller having a plain cylindrical surface spaced above and from one edge of the shelf for engagement with the coils of the spiral when the latter is positioned on the shelf, and means for rotating the roller to cause the spiral to be rotated. Each aperture may be engaged by a single coil, or the aperture may take the form of a slot and be engaged by two successive coils of the spiral. The main frame of the machine is provided with two standards 15, each having a dove-tailed groove therein to receive a bearing head 16 which is capable of vertical adjustment by means of screws 34. A guiding and winding roller 19 is mounted on a shaft 18 supported in ball bearings in the members 16, and the shaft 18 is provided with a pulley 35 connected by an extensible belt 38 to a further pulley 36 driven by a motor 37. A set of leaves 12 with some of the apertures therein initially engaged by the coils of a wire spiral 14 is supported on a shelf 11 carried by the frame 10 with the coils of the spiral in contact with the roller 19. The set of leaves is held on the shelf 11 by a presser bar 21 carried by arms 22 adjustably secured to arms 23 mounted on a rock-shaft 24, the rock-shaft having an arm 25 secured thereto which is connected by a link 26 with a foot treadle 27 acted upon by a spring 28. The spring 28 thus acts to press the bar 21 into contact with the leaves 12, and on depression of the treadle 27 the bar is raised. The operative surface of the roller 19 is of a yieldable material, such as vulcanized rubber, and when the roller is rotated, the yieldable surface thereof forces the spiral 14 to rotate and cause the coils thereof to engage the apertures in the leaves 12. Specification 480,628 is referred to.
Patent GB-451631-A (GB)
Title: Improvements in or relating to pipe connections
IPC: E03C1/122
Filed: 1935-06-29
Abstract: 451,631. Pipe joints. GROENIGER, W. C., A.I.U. Citadel, Columbus, Ohio, U.S.A. June 29, 1935, No. 18696. Convention date, July 20, 1934. [Class 99 (i)] [See also Group I] A junction-piece for pipes of which the axes are in different planes has one of its openings elongated transversely to receive a bushing having a circular aperture in the required position. In a tee-piece the branch outlet has a bushing 28 having parallel sides and semicircular ends and an eccentrically placed circular opening 30. The bushing may be inverted so that it can be used with branch pipes having their axes at either of the centres 28. The bushing has a bevelled seating edge 35 and the socket 5 is enlarged to provide a space 36 for packing material. The pipe may be screwed or cemented into the bushing. The device may be used in a straight junction-piece for joining pipes with axes parallel but slightly out of alignment. The fitting is used in connecting a number of water-closets having their outlets in a horizontal plane and required to be joined to an inclined branch soil pipe 26, Fig. 17. The tee-pieces used may be of the kind described in Specification 451,460.
Patent GB-383918-A (GB)
Title: Improvements in the manufacture of spring mattresses
IPC: A47C23/043
Filed: 1932-07-04
Abstract: 383,918. Spring mattresses. LEWIS'S, Ltd., 40, Ranelagh Street, Liverpool, and COLTMAN, J. R., Dinas, Southgate, Church Road, Urmston, near Manchester. July 4, 1932, No. 18808. [Class 52 (iv).] A method of making spring mattresses consists in mounting coiled springs 6 on bars 5 which are assembled in slots 7 in a reversible jig frame 1, the springs being interconnected by flexible chain pieces 14 and the bars by flexible chains 15, the assembled bars and springs then being removed as a unit. The bars 5 are held in the notches 7 by sliding strips 8, 9 having lugs 10 engaging over the bars. End-pieces 13 adjustable on cross-bars 11 serve for alignment of the bars 5.
Patent GB-1280238-A (GB)
Title: Improvements relating to gas extractor and dust removal apparatus for use with coke quenching trucks
IPC: C10B33/00
Filed: 1970-04-21
Abstract: 1280238 Confining and removing waste products in industrial processes; coke quenching trucks HARTUNG KUHN & CO MASCHINENFABRIK GmbH 21 April 1970 [21 April 1969] 18936/70 Headings F4B and F4X Gas extractor and dust removal apparatus for use with a coke quenching truck comprises a carriage 26 adapted to travel on the same tracks 19 as the coke quenching truck 20 and carrying a hood 34 which projects from the carriage 26 so as to be capable of covering the load area of the truck 20. The hood is sub-divided by vertical walls 36 into individual compartments connected to an extractor pipe 28 through valves 40, 41. The extractor pipe 28 terminates in a blower 29 from whence the gas-air mixture from the hood is passed to a wet fitter and then to a chimney 32. The carriage 26 normally has two hoods extending in opposite directions and suspended by cables 33. Burning coke from the coke ovens is discharged via a coking mass guide grid 15 through an aperture 42 in the hood on to an inclined ramp 21 on the truck 20. When the ramp 21 is entirely covered with coke, the truck 20 and carriage 26 travel at the same speed towards a quenching tower so that the burning coke on the ramp is beneath the hood until it arrives at the tower.