baber/WOPTO huggingface dataset:
Patent GB-346325-A (GB)
Title: Improvements in or relating to high frequency oscillator systems
IPC: H03B5/10
Filed: 1929-10-05
Abstract: 346,325. Thermionic valve circuits. GUNN, R., 245, C. Street, Washington, U.S.A. Oct. 5, 1929, No. 30277. Convention date, Oct. 6, 1928. Void [Published under Sect. 91 of the Acts]. [Class 40 (v).] Stabilized oscillations are generated at a frequency which is independent of variations, due to keying or otherwise, in the plate and filament potentials, by means of one or more valves in which inherent plate-grid capacity coupling is eliminated and a regenerative feed-back is provided through tuned circuits from the output to the input. As shown in Fig. 1, a screened-grid amplifier 1 is coupled through a tuned-anode circuit 5, 6, determining the frequency generated, to a similar screened-grid amplifier 2 which is back-coupled through a capacity 8 and variable resistance 9 to the input of the first valve. Two three-electrode amplifiers may be similarly coupled if the inherent plate-grid capacities are suitably neutralized. The second amplifier may have a considerably higher power-rating, to serve as a power-amplifier, the feed-back being correspondingly reduced. In Fig. 5, the oscillator consists cf a single screened-grid valve 25 suitably screened from the amplifier stage 30. In this case, backcoupling between the tuned input and output circuits is effected by means of a flywheel circuit 28. The system may also serve as a filter or selective amplifier for a definite frequency, which continually passes and repasses through the tuned circuits coupled by the valve amplifiers.
Patent GB-988727-A (GB)
Title: Improvements in or relating to horological instruments
Inventor: RYALL HAROLD
IPC: G04C3/06
Filed: 1962-08-08
Abstract: 988, 727. Clocks. S. SMITH & SONS (ENGLAND) Ltd. Aug. 8, 1962, No. 30335/62. Heading G3T. A horological instrument of the kind embodying a balance wheel 14 which drives a time train, comprises an impulsing coil 15 carried by the balance and arranged so that at least one stretch of the coil swings across a field provided by the poles of a magnet assemblage 16 comprising two magnetic elements 17, 19 each having a pole face, which pole faces are substantially parallel and spaced apart to provide a gap, a body of non- magnetic material 22, 23, 24, 25 being so moulded or cast around both said elements as to locate each accurately with respect to the other but so as to maintain said gaps, to which body of non- magnetic material is connected the mounting 26, 31, 32,33 for the balance wheel whereby the path of movement of the coil is accurately located with respect to the poles. In a timepiece wherein the balance is maintained through a transistor circuit not shown, the coil has its turns axis at right angles to the balance staff as in Fig. 14. The magnet assemblage comprises a U-shaped part 17 of low remanence against one limb 18 of which abuts a permanent magnet 19 of high remanence in turn abutted by a polepiece 20. Initially the permanent magnet is lightly magnetized and the parts abutted and placed in a casting die under spring retention whereupon the non-magnetic material 22 &c., e.g. of zinc based alloy or a plastics material, is cast round the parts and on cooling contracts and holds them together. The part 19 is then magnetized to the required flux density. As shown, the casting leaves parts of the magnet exposed and supports between mounting plates 12, 13 the time train 71 driving the hands from arbor 72. A balance spring 35 is adjustable by a worm and toothed sector 40, 39 through a knob 43, the balance also operating against two non-adjustable springs 37, 38, these parts being shielded by a magnetic shield 8. Starting of the balance and hand setting is effected through an axially movable and rotatable shaft 54 operating a flick lever 58 which engages a spring finger 62 contacting the balance, the shaft having a double-conical portion engaged by a return spring 57 and carrying a pinion 64 engageable with a hand setting wheel 65. Specification 956,768 is referred to.
Patent GB-605061-A (GB)
Title: Improvements in heat radiators
IPC: H01F27/02
Filed: 1945-11-13
Abstract: 605,061. Radiator tubes. ELLIS, A. G., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 13, 1945, No. 30337. [Class 64(iii)] A radiator, suitable for use in transformers, switchgear and the like cooling circuits, comprises a plurality of tubes 1, which are for the main part of their length circular in cross-section but are of elliptical cross-section at and adjacent to the ends, which are secured to a header 4 with the major axis of the ellipse along the longitudinal direction of the header, which is of a width not substantially greater than the cross-section of the tubes. The header is formed of a single piece of sheet metal welded at the joint 5, and extends from the wall 6 of a tank being closed at its outer end 7. The lower ends of the tubes may also be elliptical and joined to a second header, or may be bent round and connected directly with tank 6.
Patent GB-1512118-A (GB)
Title: Apparatus for measuring the rate of change in speed of a moving body
IPC: G01P15/16
Filed: 1976-07-21
Abstract: 1512118 Measuring acceleration electrically PCB CONTROLS Ltd 21 July 1976 [19 July 1976] 30391/76 Heading G1N The acceleration or deceleration of a rotating metal disc 1 is measured by the e.m.f. induced in a coil 4 by the change in flux produced by the eddy currents developed in the disc by two permanent magnets 2 located near the periphery of the disc on either side of the coil 4, which is wound on a laminated core 3.
Patent GB-430001-A (GB)
Title: Improvements in or relating to the manufacture of surfacing material
IPC: E01C13/06
Filed: 1933-11-01
Abstract: A surfacing-material suitable for hard tennis courts, paths, &c. comprises an inert aggregate of sand, asbestos, granite chips, or cement and a binder of drying oil mixed with resin, the resin being in amount substantially equal to or greater than the oil but not more than one and a half times the oil.  The resin may be a p  natural resin such as colophony or a synthetic resin, e.g. "Bakelite" (Registered Trade Mark).  In an example 12 lbs. of rosin are mixed hot with 1 gal of raw linseed oil and 1 oz. of powdered alum.  Two gallons of the resulting syrup are mixed with 6 cu. feet of dry sand and 30 oz. of chrome green are added.  If a quick setting, tough material is required 70 oz. of tung oil are added and 5 per cent (reckoned on total oils) of a 4 per cent cobalt linoleate.  Other examples are given.  Specification 250,678, [Class 22], is referred to.
Patent GB-712887-A (GB)
Title: Improvements in or relating to gas burners
Inventor: KONINGS JOSEPHUS PETRUS MARIA
IPC: F23D14/10
Filed: 1952-12-01
Abstract: 712,887. Gas burners; lighting burners. DIEPENBROCK & REIGERS, N. V. Dec. 1, 1952, No. 30460/52. Classes 75 (1) and 75 (3) A gas burner of the kind comprising a mixing tube for gas and primary air connected intermediately of the ends of a burner tube provided with flame apertures along its length, has an offset chamber 7, 11 which extends over a part only of the length of the burner tube 4 in the vicinity of the opening thereinto of the mixing tube 1, the mixture being admitted to the chamber 7, 11 through apertures 12 in its wall 11 preferably disposed out of alignment with said opening so as to avoid blowing off of flames at burner apertures 9 provided in the wall 7 of said chamber, the ends of the wall 7 being rounded, and the burner apertures 6, 9, and 10 provided in the burner tube 4 and the straight and rounded portions of the wall 7, respectively, being so spaced and arranged that the jets of gas therefrom will light from one another when any of the jets is ignited. The burner apertures 6, 9, and 10 may be arranged in one or more row or rows. In the illustrated embodiment the apertures 6 are provided in two rows and an additional aperture 6 is provided adjacent each end of the wall 7 between the rows for co-operation with the apertures 10 when the burner is lit. The wall 7 is formed as a stamping and is welded to the tube 4.
Patent GB-662414-A (GB)
Title: Improvements relating to the preparation of edible decorative material for use for example in the decoration of foodstuffs and confectionery
IPC: A23G3/20
Filed: 1949-11-28
Abstract: 662,414. Coated decorative sugars for confectionery &c. JANSEN, T. J. Nov. 28, 1949 No. 30502/49. Classes 28 (i) and 127 Coated decorative sugars for confectionery &c. are made by stirring aggregates of refined sugar grains with molasses until they are uniformly and thinly coated and then applying a thin layer of a glazing or colour-imparting powder, e.g. powdered edible varnish, chocolate or cocoa, in such a manner as to retain substantially the original shape of the aggregates. An aromatic substance may be added to the molasses or the sugar-molasses mixture and the molasses may contain alcohol.
Patent GB-1422343-A (GB)
IPC: G01N27/30
Filed: 1972-06-29
Abstract: 1422343 Electro-chemical analysis BECKMAN-RIIC Ltd 29 June 1973 [29 June 1972 30511/72 Heading G1N A combination electrode includes a glass sensing electrode 1 around the body of which is arranged a reference electrode 2. Glass envelope 3 containing buffer solution 5 and metal /metal salt electrode 6 is connected to the inner conductor of coaxial cable 7. Wrapped round electrode 1 is double sided adhesive tape 9 around which is wound a chloridized silver wire 10 of the reference electrode 2 and which is connected to the screening 11 of cable 7. A layer of potassium chloride crystals 12 are arranged on the tape 9 and a layer of woven glass fibre material 13 is incorporated within the crystal layer 12. Material 13 acts as a salt bridge so that the reference electrode is charged by dipping in KCl solution which rises by capillary action through the fibres into the electrode 2.
Patent GB-341464-A (GB)
Title: Improvements in or relating to control system for radio instruments
IPC: H03J5/18
Filed: 1929-10-08
Abstract: 341,464. Impulse transmitters; selectors for distant control systems. CRILLY, W. P., 535, North Sycamore Street, Los Angeles, U.S.A. Oct. 8, 1929, No. 30520. Convention date, Oct. 10, 1928. [Class 40 (iv).] In a setting mechanism for a wireless receiving set &c. electromagnets 33a, 33b, &c., which determine the various settings, each have one terminal connected to one of a series of contacts Cl, C2, C3, &c. on a selector switch 54, Fig. 2, their other terminals being connected through a common wire 41 and switch S to one terminal of a battery B. An electromagnet 44, operated by successive contacts of a switch S1, operates a pawl 60 and ratchet wheel 62 on a shaft 63, on which is mounted the arm 53 of the selector switch 54. This is stepped around by successive closures of the switch S1 until the desired contact C1, C2, &c. is engaged. The switch S is then closed and completes the circuit of the selected electromagnet 33b, the circuit including a switch 47 which is closed except when the arm 53 is in its starting position. When the particular selective operation is effected a circuit through a wire 70 is closed for an electromagnet 66. A detent 65 is thereby withdrawn from the ratchet-wheel 62, allowing the arm 53 to return to its normal position under the influence of a spring 64, the switch 47 being thereby opened. The detent 65 carries a contact 49 which normally contacts with a spring 51 and maintains the circuit of the selected magnet 33b closed in spite of the movement due to passing the teeth of the ratchetwheel 62. On being retracted by the magnet 66, however, the detent carries the contact away from the spring 51 and into contact with the spring 50, thus maintaining the circuit of the magnet 66 closed, but breaking the circuit of the magnets 33a, 33b &c. so that these are not successively operated as the arm 53 returns to its normal position. The switches S, S1 are operated by the means shown in Figs. 3 and 4, in which the wire 42 is connected to the arm 90 of a two-way switch which, in the position shown in Fig. 4, is maintained by a spring 90c in engagement with a spring contact 91 thus closing the switch S in the circuit 41. In its opposite position the arm 90 closes the switch S1 in the circuit 45 by engaging a contact 92. A dial 93, similar to that used in telephone systems is adapted to be rotated through a selected distance by hand and then to return to normal position by spring action. On its underside are a series of notches 94 with which the switch arm 90 engages. During rotation of the dial 93 by hand, the switch S is opened and the switch 21 intermittently closed owing to the switch arm being moved away from the contact 91 and engaging the contact 92 once for each notch 94 passed over. On releasing the dial and allowing it to return to normal position, the arm 90 moves over into contact with the spring 91 closing the switch S.
Patent GB-911725-A (GB)
Title: Heat exchanger
IPC: F28D7/10
Filed: 1961-08-24
Abstract: 911,725. Tubular heat-exchangers. BROWN FINTUBE CO. Aug. 24, 1961 [Sept. 14, 1960 (2)], No. 30545/61. Class 64 (3). In a heat-exchanger comprising a bundle of longitudinally-finned tubes 26 surrounded by an outer shell 10, fluid is prevented from flowing through the peripheral recesses 44 defined by the fins 25 of the outer tubes of the bundle and the outer shell wall by means of closure members 51 (Fig. 4). The end portions 53 and 54 of the latter are curved to fit against the outer shell while its central portion is grooved as at 55 to fit against the fins 25 defining the recesses 44. A cylindrical member 61 is fitted around the central tube of the bundle and further closure members 62 similar in form to the members 51 are fitted around the cylinder to close the internal spaces 45 between the fins of the tubes to fluid flow. Straps 68 and 69 are used to support the bundle of tubes 25, the former around the end portions 53 and 54 of the closure members 51 and the latter between the ends. In the illustrated embodiment (Fig. 1), the tubes 26 are of the hairpintype enclosed in parallel outer shells 10 and 11 which have a removable end cap 12.
Patent GB-816593-A (GB)
Title: Process for the introduction of carboxyl groups into aromatic hydrocarbons
IPC: C07C51/15
Filed: 1957-10-01
Abstract: Aromatic carboxylic acids and their salts and other derivatives are prepared by heating an aromatic hydrocarbon above 350 DEG  C. in the presence of carbon dioxide, which may be present in a free or combined form, and an acid binding agent to obtain a salt of the acid which may then be converted to the free acid or other derivative, e.g. ester or amide.  Suitable hydrocarbons include benzene, toluene, xylene, cumene, di-isopropyl benzene and other benzene, naphthalene, diphenyl, diphenylmethane and other aromatic compounds substituted by saturated or unsaturated alkyl or cycloalkyl groups.  The acid binding agent may be an alkali metal carbonate, bicarbonate, formate or oxalate, preferably potassium carbonate.  The reaction may also be carried out in the presence of substances able to bind or react with any water formed in the reaction, for example aluminium carbide, carbides or nitrides of alkali or alkaline earth metals, metals such as aluminium which will react with water under the reaction conditions or an alkali metal carbonate, present in approximately at least a molar excess over the amount required to neutralize the acids formed.  The reaction is influenced by catalysts and heavy metals, e.g. zinc, cadmium, mercury, iron, lead or their compounds may be used in the reaction.  The reactants, when solid, are heated in a dry, finely divided state and caking and local overheating are minimized by the use of stirring or moving reaction vessels or the addition of inert substances with large surface areas.  The reaction is preferably carried out in the presence of gaseous carbon dioxide under pressure.  In the examples 1-6 and 8-20 terephthalic acid and/or trimesic acid is obtained by heating benzene in the presence of carbon dioxide under pressure with potassium carbonate or caesium carbonate as acid binding agent; aluminium carbide, calcium carbide, aluminium phosphide, silicon, boron or silicon tetraphenyl as water binding agent; cadmium fluoride K2CdF2Cl2, zinc chloride, mercuric chloride or metallic cadmium as catalyst; and asbestos as the inert diluent.  In Example (14) dipotassium terephthalate is added to the reaction mixture.  In Example (7) naphthalene 2 : 6-dicarboxylic acid is obtained by heating naphthalene in the presence of carbon dioxide, potassium carbonate, aluminium carbide, cadmium fluoride and asbestos.  In Example (20) benzoic and other aromatic acids are identified but not isolated.
Patent GB-374760-A (GB)
Title: Improvements in or relating to trousers and like garments
IPC: A41F9/02
Filed: 1931-11-05
Abstract: 374,760. Straps for trousers and like garments ; fastenings. SADDLETON, W. H., 26, Gibbon Road, Kingston-on- Thames. Nov. 5, 1931, No. 30641. [Class 141.] A strap fastening for the waistband, upper portions, or leg-bands of garments, such as trousers, knickers, &c., comprises a band 2 made in one piete of non-stretchable material with a buckle cr clamp capable of slidable adjustment, one end 3 of the band 2 being stitched to the garment, and the other end 4 being provided with a hem or loop 11 which, after passing inwardly through an elongated loop 6 secured to the garment, is passed through a slot in the buckle or clamp and retained in positior by a pin 11a inserted in the hem or loop 11. The buckle is made in two portions, as shown in Figs. 7 and 8, the rear portion 10 being provided at one end with a slot 10a for the reception of the end 4 of the band 2, and at the other end with a gripping- portion 12. Pivots 15 formed on the portion 12 enter recesses or holes 16 in projections 17 on the front portion 18 of the buckle. The outer edge 14 of the gripping-portion 12 is arranged at or about the centre of the portion 18 so that, when desired, the latter may be pressed into a flat position to secure the band 2 between it and the gripping-edge 14. In a modification, the rear portion 10, instead of having a slot 10a, is provided with a pair of projecting lugs 20, between which is pivotally mounted an L-shaped plate 21. The shorter leg of the plate 21 is provided with a gripping- edge, and the longer leg is provided with a tongue 23 which either rests upon the outer surface of a part 13 of the rear portion 10, or is arranged to enter a recess 24 formed in the part 13. The rear portion 10 is secured to the front portion 18 of the buckle as described above. To secure this type of buckle to the end 4 of the band 2, the tongue 23 is lifted to allow the end 4 to be inserted between the inner surface of the rear portion 10 and the gripping- edge of the plate 21, after which the tongue 23 is pressed down until the end 4 is firmly secured.
Patent GB-1197354-A (GB)
Title: Method of Increasing the Coefficient of Friction of Paper Usable as a Packaging Material
IPC: B31F1/07
Filed: 1968-06-27
Abstract: 1,197,354. Roughened paper. SKOGSAGARNAS. INDUSTRI A.B. 27 June, 1968 [30 June, 1967], No. 30661/68. Headings D2A and D2B. The coefficient of friction of paper, ,particularly sack paper, is increased by a method in which the paper is roughened on one side by means of a roll provided with a carding clothing on its curved surface, which co-operates with a pressure roll, having a smooth curved surface, on the opposite side of the paper. The carding coating may be of steel bristles. or of plastic fibres, and the rolls may rotate either in the same or in the opposite direction as the paper, at a roll speed equal to or higher than the paper speed. The pressure roll may be coated with rubber. The carding coating may be cleaned by means of a water spray, compressed air, or another roll.
Patent GB-902908-A (GB)
Title: Improvements in or relating to load-carrying watercraft
IPC: B63B21/62
Filed: 1959-09-09
Abstract: 902,908. Sectional tugboats. STOCKDALE, G. Aug. 16, 1960 [Sept. 9, 1959], No. 30717/59. Class 113. A tugboat comprises two individual separable sections a bow section 10 and a stern section 11, which houses the propulsion unit 11e. Each section terminates in a similar transverse bulkhead 11b, 10c and the two are joined together by cables 14, fastening devices 11h, 10e and a hand winch 10f. As shown in the Figures a plurality of intermediate load carrying sections 12 and 13 may be joined between the bow and stern sections in a manner similar to that described above. Without the sections 12 and 13 the boat may be used as a normal tug. Each section is provided with ballasting arrangements for adjusting draft.
Patent GB-1271477-A (GB)
Title: An improved apparatus for separating solid matter from a flowing fluid
IPC: B01D21/00
Filed: 1970-06-25
Abstract: 1,271,477. Gravity separation of solids from fluids. GOTVERKENS ANGTEKNISKA A.B. 25 June, 1970 [1 July, 1969], No. 30792/70. Heading B1D. Apparatus for the gravity separation of solid matter from a flowing fluid comprises an inlet chamber 10 and an outlet chamber 11 separated by a plurality of tubes 14 each having at least one outlet opening 16 in the bottom thereof, the outlets being arranged in groups lying in vertical planes. Solid particles if heavier than the fluid will tend to sink towards the bottom of the tubes and pass out of the outlet openings to conduits 17. Baffles 18 are fitted each side of each group of outlets to prevent the outflow from these openings disturbing the flow in the tubes below. If the solid particles to be separated are lighter than the fluid, then the outlets 16 are in the top of the tubes 14 instead of the bottom.
Patent GB-346679-A (GB)
Title: Improvements in or relating to stereoscopic photography
IPC: G02B27/10
Filed: 1929-10-10
Abstract: 346,679. Stereoscopic photography. SAVAGE, L. F., 20, Old Compton Street, London. Oct. 10, 1929, No. 30808. [Class 97 (i).] In apparatus for the production of stereoscopic pictures by the use of optical systems of the kind described in Specifications 299,733 and 300,143, [both in Class 97 (i), Optical systems &c.], in which the images are superposed on the focal plane, the angle of convergence of the rays of light from the objectives to the images are caused more nearly to correspond to the angle of divergence of the rays of light from the objectives to the object by the introduction of rhomboidal prisms into the ray path. In the Figure the prisms d are introduced between the objectives a and the lens b in which the first image is formed. The distance between the subsequent lenses e is thus reduced to a minimum, together with the diameter of the superposing lens f. In a modification the prisms may be arranged in front of the objectives a, and in a further form the prisms are arranged between the lenses e and the superposing lens f. In further modifications a single rhomboidal prism is used and is rotated to be positioned alternatively in the axis of each optical system. This prism may be rotated together with a single back lens e, being situated between the objectives and this lens or may be independent of the back lenses e and rotated between them and the superposing lens.