baber/WOPTO huggingface dataset:
Patent GB-714437-A (GB)
Title: Improvements relating to non-linear electrical circuits
Inventor: KEEN ARTHUR WILLIAM
IPC: H04N5/202
Filed: 1951-11-02
Abstract: 714,437. Non-linear valve circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 31, 1952 [Nov. 2, 1951], No. 25620/51. Class 40 (6) In :a circuit comprising an attenuator hawing shunt and series arms, one of which is non- linear, the attenuator is arranged in a positive feedback loop, the transfer function of which is unity. It is shown that with this condition the output of an attenuator having a shunt arm R1 and series arm R2 is R1/R2 of the input. A television signal, applied to valve 1, is fed over a D.C. restoring circuit 6, 7 to a cathode follower 9 connected to an attenuator R1, R2. The signal appearing across R1 is applied to output valve 14, a fraction being tapped off the cathode load 17 and fed back ,to valve 3 coupled over resistor 4 to valve 1. The tapping on potentiometer 17 is adjusted so that the transfer function from the grid of valve 14 to the cathode of valve 9 is unity. In a modification, Fig. 2 (not shown), the cathode of valve 1 is connected directly to the tap on potentiometer 17 and the output taken from the join of the resistors R1, R2.
Patent GB-1003241-A (GB)
Title: Improvements in or relating to coatings for solid pharmaceutical compositions
IPC: A61K9/28
Filed: 1963-06-27
Abstract: A solid pharmaceutical composition having a coating which disintegrates rapidly in aqueous media is characterised in that the coating comprises an inner layer (A) 0.005 to 1.0 mm. thick of a non-toxic polyalkylene glycol soluble in water and volatile organic solvents and an outer layer (B) less thick than the inner layer, i.e. 0.003 to 0.05 mm. and consisting of a non toxic, water-insoluble, film-forming thermoplastic substance soluble in a volatile organic solvent.  It is preferred that the inner layer be 0.05 to 0.3 mm. thick.  Polyethylene glycols of molecular weight 4000 to 20,000 are preferred for the inner layer.  The outer layer may be composed of cellulose acetate, cellulose acetate phthalate, cellulose acetate succinate, cellulose propionate, cellulose butyrate, a polyalkylmethacrylate, polyvinylacetate a silicone resin, shellac, zein, an acrylic/methacrylic acid copolymer, a vinyl acetate/meleic acid copolymer or a vinyl acetate/vinyl pyrrolidone copolymer.  In the examples, a tablet core of ascorbic acid, succinic acid and ferrous sulphate with excipients is coated with a solution of (A) in a volatile organic solvent followed by (B) in a volatile organic solvent such as chloroform and acetone or ethanol and acetone. Pills, granules and suppositories may also be coated in a similar manner.  Dyestuffs pigments and titanium dioxide may be present in the tablets.
Patent GB-298468-A (GB)
Title: Improvements in or relating to silencing devices for internal combustion engines
IPC: F01N1/16
Filed: 1928-09-07
Abstract: 298,468. Wilman, Z. Oct. 8, 1927, [Convention date]. Exhaust silencers.-Exhaust gases flow alternately through pipes a, a<1> into opposite ends of an expansion chamber b, at the centre of which outlet ports e are located. Between the outlets and each inlet is a seating h for a double valve f adapted to slide on a rod k. The valve is stated to be opened progressively in proportion as the exhaust pressure falls. The Specification as open to inspection under Sect. 91 (3) (a) describes also a modification in which the gases enter at one end of an expansion chamber the other end of which is provided with outlet openings controlled by a spring- loaded valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-228109-A (GB)
Title: Improvements in devices for rectifying alternating current
IPC: H02M7/06
Filed: 1924-10-29
Abstract: 228,109. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Jan. 25, 1924, [Convention date]. Systems of charging galvanic batteries.- Apparatus for rectifying alternating current and applicable for charging batteries with a current substantially independent of the number of cells in circuit, comprises a transformer 1, the primary of which is adapted to be connected to the source of supply by a plug 4, the secondary being connected to the direct current output terminals through one or more rectifiers 6 having cathodes which yield an emission at a lower temperature than tungsten, such as those coated with alkaline earth oxides, a resistance 8 having a high temperature coefficient being provided in the rectified current circuit for maintaining substantially constant current in the external circuit for any load. The transformer 1 is housed in a case 3 on the lid of which are provided one or more bayonet sockets 5 for the rectifiers, one or more Edison screw sockets 7 for the resistances, and a push-button switch 9 for supplying cathode heating current at starting. This current is supplied either from a tapping on the transformer secondary as shown in Fig. 3, or from a separate secondary winding as shown in Fig. 6, the latter Figure showing the connections when a rectifier having two anodes is employed for utilizing both halves of the current wave. The rectifiers employed may contain argon or mercury vapour and the resistances may consist of iron wire in an atmosphere of hydrogen.
Patent GB-770872-A (GB)
Title: Improvements in or relating to extrusion apparatus and methods
Inventor: ROWLES REGINALD VICTOR
IPC: B29C48/06
Filed: 1952-10-15
Abstract: 770,872. Extruding. FIELDING & PLATT, Ltd., and HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T. Oct. 15, 1953 [Oct. 15, 1952], No. 25892/52. Class 83 (4). [Also in Group V] In the extrusion of material from a hydraulic press having two or more billet containers 5, 6 from which the billets are extruded in succession by hydraulic rams, the billet residue remaining in its container when the extrusion is changed over to another container is approximately one third to one half of the initial mass of the billet so as to reduce or eliminate any tendency of the billet material to flow back into the first mentioned container during the change over. To further increase the resistance to back flow, at least a portion of the bore of each container is tapered with the maximum diameter of the tapered portion at the die end of the bore. The tapered portion may commence at a point mid-way along the bore as in the container 5, or at a point one third or one quarter from the die end as in the container 6. In the latter case the passage 15 leading to the annular mixing chamber 7 is larger than the passage 15 of the other container 5. When a new billet is inserted into a container, pressure is applied by the ram to upset the billet and to force it into the residue of the previous billet before extrusion of that billet commences. The mixing chamber communicates through apertures 12 with an extrusion orifice 10 formed between inner and outer dies 8, 9. The rams may have the same diameter and stroke or they may have dissimilar dimensions. In the latter case the hydraulic control means for the rams is arranged to ensure that the same volume of material is always delivered to the mixing chamber per unit time. These control arrangements may be as described in Specification 770,871. The invention is applicable to the extrusion of solid sections, tubes or for the sheathing of cables using billets of non-ferrous metals or alloys, particularly aluminium, or synthetic resins.
Patent GB-189290-A (GB)
Title: Improvements in building blocks
IPC: E04B2/14
Filed: 1921-09-30
Abstract: 189,290. Thomson, R. Sept. 30, 1921. No Patent granted (Sealing fee not paid). Building-blocks, special shapes of.-Relates to hollow building-blocks for walls, and in particular to the bedding-joints thereof. The courses of blocks 1 are erected dry, each block standing on the lower faces 12 of webs 11 in contact with the block beneath, the surfaces 6, 7 being situated so as to permit the insertion of bedding material 18 into the longitudinal channels 8 through the hollow interior 2. Vertical channels 10 are provided to form an end-joint between contiguous blocks, while bedding-strips 20, or in the case of corner-blocks, bedding-blocks 24, Fig. 6, may be used.
Patent GB-329586-A (GB)
Title: Lamp bulb holder for miners' electric lamps
IPC: F21V25/02
Filed: 1929-08-27
Abstract: 329,586. Concordia Elektrizitõts Akt.-Ges. July 19, 1929, [Convention date]. Battery lamps.-In addition to a spring c inserted between the bulb e and the outer glass d, scattering springs b are provided pressing outwardly on the glass, so as to ensure the parts being dispersed on breakage and the bulb released. The springs b may be soldered to the same cap a as the spring c.
Patent GB-1532535-A (GB)
Title: Articulated vehicles
IPC: B62D53/08
Filed: 1976-06-23
Abstract: 1532535 Anti-jack-knifing apparatus; spottype disc brakes AUTOIPARI KUTATO INTEZET 23 June 1976 [30 June 1975] 26127/76 Headings F2E and F2F [Also in Division B7] Anti-jack-knifing apparatus of an articulated vehicle comprising a trailer 2 coupled by a king-pin and a fifth wheel plate 4 to a tractor 1 having a hydraulic servo steering gear 11, comprises brake callipers 6 carried by the tractor and co-operable with a brake disc 5 carried by the trailer to generate an anti-jack-knifing brake force, the apparatus further comprising a control valve 9 operable to control the actuation of the brake callipers 6 so that the antijack-knifing brake force generated is reduced, from the level prevailing when the steering gear is in the straight-ahead position, proportionally with the pressure difference in the steering gear working chambers resulting from turning movement of the steering gear away from the straight-ahead position. The control valve 9 is coupled through ducts 12, 13 with the steering gear working chambers and progressively interrupts communication between an accumulator 8 and a brake cylinder 10 when the steering gear is turned away from the straight-ahead position.
Patent GB-1512694-A (GB)
Title: Device for dispensing viscous material onto a surface and wiping the surface
IPC: B05C17/00
Filed: 1975-06-20
Abstract: 1512694 Coating by extrusion LOCTITE CORP 20 June 1975 [20 June 1974] 26303/75 Heading B2L [Also in Divisions B6 and F1] A device for applying a viscous material to a stencil 12 and for wiping the surface clear of the material as the device is moved over it, comprises a container 2 for the material on which is slidably mounted a sleeve I carrying on an adjustable rod 3 a piston 5 for engaging the seal 6 to discharge the material. The other end of the container has a sealing ring 7, with one or more outlet apertures D1, on which is slidably mounted an applicator head 8 having a seal 11 engagable by a shoulder 18 on the seal 7. In a second embodiment the sealing ring and applicator are integral.
Patent GB-404591-A (GB)
Title: Improvements in the continuous heating and degasification of water
IPC: B01D19/00
Filed: 1933-09-23
Abstract: 404,591. Domestic and factory waterheating installations. ZOPICK, A., 3, Dessauerstrasse, Zehlendorf, Berlin. Sept. 23, 1933, No. 26312. [Class 64 (i).] The water in a reservoir 1 is heated in a heat exchanger 4 between which and the return pipe 3 to the reservoir is mounted a degasifying chamber 5. The degasifying chamber, the return pipe and a delivery pipe 11 are all disposed above the highest part of the reservoir. The degasifying chamber is provided with an automatic gas escape valve 6 and an inner pipe up which the water rises before returning on the outside of this pipe to the reservoir. The water in the heat exchanger may be heated by steam from a boiler 7, electrically, or otherwise. A cooler 12 may be connected to the delivery pipe to adjust the temperature of the heated water, and to prevent degasification of the water after leaving the reservoir.
Patent GB-322790-A (GB)
Title: Improvements in or relating to process and apparatus for administering anaesthetics
IPC: A61M16/18
Filed: 1928-09-13
Abstract: 322,790. Carpmael, A., (I. G. Farbenin. dustrie Akt.-Ges.). Sept. 13, 1928. Respiratory appliances. -A device for use in administering anµsthetics is arranged so that the exhaled breath is employed for warming the anµsthetic before inhalation. ' The device consists of a face mask a to which is connected a vaporizing- chamber g for the anµsthetic surrounded bv a receptacle b for an active filtering-mass h such as activated carbon or silica, gel, which serves to absorb the exhaled breath and transfer its heat to the vaporizing-chamber. The mass h is enclosed between perforated plates i, k, and the passage of the breath thereto is controlled by exhalation valves e. The vaporizing-chamber g is provided with apertures p for the admission of air and a drainage-pipe for unvaporized anµsthetic, and the passage of the vapour to the mask a is controlled by an inhalation valve d.
Patent GB-314725-A (GB)
Title: Process of working up potash salts
IPC: C01D5/10
Filed: 1928-09-13
Abstract: 314,725. Mond, A. L., (Rhenania-Kunheim Verein Chemischer Fabriken Akt.-Ges.). Sept. 13, 1928. Potassium carbonate and sulphate; ammonium chloride and sulphate; sodium bicarbonate. - In isolating the constituents of crude potash salts, the solution is treated with ammonium chloride and ammonia to cause the separation of potassium sulphate equivalent to the magnesium sulphate present, and afterwards with carbon dioxide to precipitate magnesium carbonate trihydrate or magnesium ammonium carbonate. The residual liquors are treated with ammonia and carbon dioxide to precipitate sodium bicarbonate and are evaporated to yield a mixture of crystals of ammonium chloride and potassium chloride and, in some cases, ammonium sulphate. The magnesium carbonate trihydrate or the magnesium ammonium carbonate is treated with potassium chloride solution and carbon dioxide to precipitate potassium magnesium bicarbonate, and to give a liquor which is evaporated to obtain a mixture of ammonium chloride and potassium chloride. The mother liquors from the ammonium and potassium chlorides are used in the initial extraction of the potash salts. The mixture of ammonium chloride and potassium chloride may be separated by treatment with ammonia which dissolves the ammonium chloride and leaves potassium chloride.
Patent GB-1478073-A (GB)
Title: Hair cutters
IPC: B26B21/12
Filed: 1975-06-20
Abstract: 1478073 Hair cutting device A N SPANEL 20 June 1975 [1 July 1974] 26342/75 Heading B4B A hair cutting device 73 comprises a blade 40 mounted on a carrier 80 which is laterally movable on a frame 77 within a cage 49 by driving means 86, 88, 92, 94, the blade being movable longitudinally relative to the carrier. The carrier is formed with bearing members 82, 84 which are slidable in guides 125, 123 provided in the frame 77, the carrier being connected to a lever 94 by a pin 102; the lever is oscillated by means of a rack-and-pinion device 86, 88, 92 so as to enable the carrier to be moved into selected positions. The blade is releasably mounted by means of a clamp 42 on a support 116 which is slidable longitudinally in the carrier such that the support may be removed therefrom in order to replace a blade. In a modification, Fig. 6 (not shown), the lever 94 is omitted such that a pinion (34) engages with a rack (176) formed directly on the carrier. The blade may be permanently secured to a plastics support which is disposable when the blade is blunt.
Patent GB-907381-A (GB)
Title: Electrical digital computing engines
Inventor: NEWMAN EDWARD ARTHUR
IPC: G06F7/52
Filed: 1958-08-18
Abstract: 907,381. Digital electrical calculating-apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 6, 1959 [Aug. 18, 1958], No. 26500/58. Class 106 (1). A multiplier comprises two stores in each of which digits of two words are stored in alternate digit positions, the words being shifted simultaneously so that in the one case the most significant digit leads and in the other case the least significant, and a plurality of multiplier means each connected between a digit position of the first store and a digit position of the second store, whereby products of the same significance are all formed in the same multiplier means. The digits a-d and e-h of the two numbers to be multiplied are entered into alternate digit positions of two registers 10-22 and 30-42 as shown in Fig. 1. A first timing pulse q1 is applied to 3-gates 24, 26, 28. If d Î e = 1 then gate 26 opens to feed an adding circuit described later. Simultaneously a p1 pulse shifts the digits a-d one digit position to the right and digits e-h one position to the left. Timing pulse q2 is then applied to 3-gates 23, 25, 27, 29. If the products ce, df are 1 then gates 25, 27 open the feed adding circuits. Shift and multiplication repeat in this manner. Adding circuit, Fig. 3. The outputs of the 3- gates 23-29 are fed to half-adders such as 45, 46. A pulse from 3-gate 26 is entered into halfadder 46 and is circulated under the control of timing pulses round the loop 106, 66, half-unit delay 116, half-adder 46 until another pulse arrives from gate 26. Coincidence in half-adder 46 results in trigger 56 turning on and trigger 66 off. Trigger 56 sends a carry pulse to the next half-adder 45 through a half-delay 125. The outputs of the series of half-adders are connected to a further series (Fig. 5, not shown) whereby the result of the product of the two numbers can be set upon a product register. The prior state of the art is represented by references to Specifications 717,114 and 866,214.
Patent GB-358674-A (GB)
Title: Improvements in or relating to clutches suitable for variable-speed gearing
IPC: F16D23/06
Filed: 1930-09-05
Abstract: 358,674. Claw clutches; variable-speed gearing. GENERAL MOTORS COR. PORATION, Detroit, Michigan, U.S.A. Sept. 5, 1930, No. 26526. Convention date, June 20. [Class 80 (ii).] A claw clutch 90, 91, Fig. 1, is synchronized by a friction cone 98 which is always in frictional engagement with male cone 96 with an oil film between. This cone clutch is more strongly engaged momentarily to effect synchronism by inclined detent surfaces 104, Figs. 4 and 6. Female cone 98 is preferably a bronze ring supported in a dished annulus 97 connected by spokes 102 to an inner flat ring 99, Fig. 6, which has keys 100 engaging between splines on shaft 72, Fig. 2, so as to be capable of relative angular displacement. Batteries of teeth 90 on movable clutch member 86 can pass between the spokes 102. Member 86 is splined on shaft 72, Fig. 1, and when it is advanced towards loose gear 79, which carries the female clutch teeth 91, the inclined detent surfaces 104, Fig. 4, are operative pressing the friction cones firmly together until the teeth 90, 91 are synchronized. Further advance of member 86 causes spokes 102 to pass into grooves 94, Fig. 2, between the batteries of teeth 90 allowing the latter to move freely forward into mesh with internal teeth 91. The residual light pressure between friction cone surfaces 96, 98 may be maintained by a spring washer 105, Fig. 9, inserted between a stop 103, Fig. 1, on the shaft and the inner ring 99. A modification is described in which this pressure is produced by spring wires engaged by the male clutch teeth. In Figs. 1 and 2 is shown an adaptation of the invention to a changespeed gear in which the member 86 sliding on driven shaft 72 has a synchronized clutch at each end for direct drive and middle speed respectively. Low speed and reverse are effected by sliding a gear 82 from a sliding shift rod 58 engaged by the end of selector lever 55. A device is shown for magnifying the axial thrust on member 86 comprising striker 64 clamped to slide with shift rod 59 and engaging lever 55 at a point 66 near its fulcrum.
Patent GB-1117935-A (GB)
Title: Improved vessel for molten metals
IPC: G01N27/411
Filed: 1965-06-23
Abstract: 1,117,935. Measuring electrically. YAWATA IRON & STEEL CO. Ltd. June 23, 1965 [June 25, 1964], No. 26536/65. Heading G1N. [Also in Division H1] In a vessel for a molten metal, a conductive electrode for measuring the oxygen potential of the molten metal is associated with a second conductor and forms a thermocouple therewith for indicating the temperature of the electrode. The refractory lining 12 of a ladle 13 for molten steel has a first refractory plug 21 supporting an iron electrode in contact with the molten steel, and three reference electrodes 22, 23, 24 buried at different depths. Each reference electrode comprises a platinum or platinum-rhodium conductor for the oxygen potential measurement welded to a platinum-rhodium electrode to form a thermocouple sealed inside a refractory plug. The oxygen potential measurements may then be corrected for temperature variations of the standard electrode.
Patent GB-901583-A (GB)
Title: Production of honeycomb materials
IPC: B31D3/02
Filed: 1957-08-22
Abstract: 901,583. Forming honeycomb paper etc.; laminating. DUFAYLITE DEVELOPMENTS Ltd. (Ji. Te A.B.). Aug. 22, 1958 [Aug. 22, 1957], No. 26546/57. Classes 96 and 140. A pile of sheets 8 of paper or glass fabric which may be resinated, or of synthetic resin, or of metal foil is transferred, one at a time, by a carriage 26 with a suction nozzle 36 which is reciprocated along rails 12 by a chain 22 and deposited to form a stack on a platen 10 for the production of honeycomb paper &c., staggered lines of adhesive being printed on each sheet, e.g. by silk screen printing or by a roller 28 supplied from a reservoir by a roll 30 as the carriage 26 advances to pick up the next sheet which is supported out of contact with the preceding, adhesive-printed, sheet by a stream of air. During such return travel, the rails 12 are raised by a ram 42 so that the printing roller is also clear of the preceding sheet. In a modifiction, for non-bibulous materials, each sheet is removed from the platen 10 before the next sheet is deposited thereon. Specifications 591,772 and 628,180 are referred to.
Patent GB-707778-A (GB)
Title: Improvements in sprocket chains
Inventor: CHEESMAN WILLIAM DETTBENNER
IPC: F16G13/07
Filed: 1951-11-13
Abstract: 707,778. Making chains, altering physical or molecular structure. CHAIN BELT CO. Nov. 13, 1951, No. 26572/51. Classes 83 (2) and 83 (4). [Also in Group XXV] Sprocket chain links 17, Fig. 3, having curled portions 18, 20 interconnected by pins 21 have their yield strength raised by imparting residual compressive stresses on the inside surface of the curled portions 18. Blanks 11, Fig. 1, from which the links 17 are made may have residual compressive stresses imparted by stamping depressions 12 in the region which forms the inside of the curled portion 18. Residual compressive stresses may also be imparted by overcurling the portions 18 and then stretching the assembled chain to restore the links to the required shape. The depressions 12, Fig. 5, compensate for flaring of the portions 18 so that a three-point contact is obtained with the pin 21 in the middle of the depression and, at the edges 23.