baber/WOPTO huggingface dataset:
Patent GB-835116-A (GB)
Title: Improvements in or relating to implements for laterally displacing mown grass or thelike material lying on the ground
IPC: A01D78/00
Filed: 1956-05-30
Abstract: The subject-matter of this Specification is also included in that of Specifications 835,114 and 835,115 but the claims differ.
Patent GB-171109-A (GB)
Title: Improvements in the means for selectively applying brakes controlling epicyclic variable-speed gearing
IPC: F16H61/02
Filed: 1921-11-04
Abstract: 171,109. Viratelle, M. N. Nov. 6, 1920, [Convention date]. Variable-speed epicyclic gearing is controlled by applying brakes selectively by means of a nipping- device, which is slid into the plane of the brake and actuated by turning a shaft. A plate i. Fig. 6, haying a fixed jaw i' is threaded to slide on. the operating-shaft h, Fig. 2, and is guided by a fixed bar j. Above the jaw i<1> and pivoted to the plate i is a jaw m normally held open by a spring n. To operate any one of a number of brakes b, b<1>, b<11>, Fig. 3. the plate i is slid by means of a lever p. Fig. 1, so that its jaws i<1>, m have between them lugs s, t, Fig. 2, on the ends of semicircular brake segments. A cam k slides with the plate i, and, when the shaft h is turned, this cam presses upon the upper jaw m so as to cause the lugs s, t to be forced together and the brake applied. On opening the jaws, a spring f releases the brake.
Patent GB-504300-A (GB)
Title: Improvements in or relating to carrier signalling systems
IPC: H03C1/58
Filed: 1937-10-27
Abstract: 504,300. Modulating and demodulating systems. TELEPHONE MANUFACTURING CO., Ltd., PADDLE, L. H., and FLINT, J. G. Oct. 27, 1937, No. 29398. [Class 40 (v)] In modulating and demodulating apparatus which is so arranged that neither of the input frequencies appears in the output, one of the input currents is fed through transformers IT1 IT2, to two balanced bridge networks. The networks IBN, IIBN consist of the secondaries of the input transformers, the primaries of the output. transformer OT, balancing resistances R2, R3, and pairs of two-electrode rectifiers RF1, RF2, RF3, RF4, connected back to back. The second input current is fed to the centre points of the rectifier pairs and adjustable tappings on resistances R2, R3. The inputs to each bridge are reversed in polarity with relation to the inputs to the other bridge and the first input current is balanced between the two bridges by means of the potentiometer R1. Complete balance of the system may be obtained by the use of any phase-compensating means such as condensers shunting resistances R2, R3. The two input transformers may be replaced by a single transformer and one pair of rectifiers reversely connected with respect to the other pair, Fig. 2 (Prov.) (not shown). The rectifier pairs may also be in shunt to the transformer windings, Fig. 2 (Comp.) (not shown).
Patent GB-1189832-A (GB)
Title: Hot Blade Sealer
Inventor: PARKER DAVID JAMES
IPC: B31B19/64
Filed: 1967-06-26
Abstract: 1,189,832. Seaming non-metallic sheet material. CANADIAN INDUSTRIES Ltd. 22 May, 1968 [26 June, 1967], No. 29431/67. Heading B5K. Apparatus for forming substantially V- shaped edge seals between at least two layers of plastics film comprises clamping means 16, 17 having an edge or edges defining the configuration of the desired seal and adapted to maintain the film layers in contact with each other along said edge or edges and a heated blade 1 adapted to cut and seal simultaneously the film layers along and immediately adjacent to said edge or edges, the blade 1 being so inclined in the direction of its apex that it will contact the film progressively from the apex of the V outwards during the heat-sealing and cutting operation. As shown, the V-shaped sealing blade 1, preferably coated with polytetrafluoroethylene, is attached to a heating element 2 fixed to a support 3 having bushings 5 through which fixed guide rods 4 pass. The V-shaped clamps 16, 17 are provided with silicone rubber pads 18, 19 respectively, to contact the film surfaces and are each fastened to upper parts of two racks 20, 24 respectively, which are maintained vertical by rollers 21, 25 and engage fixed pinions 22 so that the clamps 16, 17 are movable in opposite directions. In operation, the blade 1 is heated to 600- 1000 F. and held in its raised position. The film layers are inserted between the separated clamps 16, 17 and a two-position solenoid valve 34, having a solenoid 36 and a recuperating spring 37, is set to admit compressed air to lines 13, 33. A piston 27, attached to the racks 20 and moving in a cylinder 26 attached to the racks 24, clamps the film layers between the pads 18, 19 and subsequently, owing to a restrictor valve 15, a piston 11 moving in a cylinder 10 lowers the blade 1 to simultaneously cut and seal the film layers. The air flow to the cylinders 10, 26 is reversed so that the blade 1 is raised and the clamps 16, 17 are separated. An air jet may be used to eject the cut-out section of the film. The apparatus may be used for forming mitred corner seals in a machine for making bags from gussetted tubing, Fig. 5 (not shown). A seal-inhibiting coating is applied to the re-entrant angle of the tubing gusset.
Patent GB-1400912-A (GB)
Title: Method for stabilisation of trans-diethylstilestrol
IPC: C07C37/88
Filed: 1972-08-24
Abstract: 1400912 Stabilised diethyl stillbestrol compositions ELI LILLY & CO 24 Aug 1972 29455/73 Divided out of 1399763 Heading A5B The isomerisation of trans-stillbestrol in animal feed compositions and premixes is inhibited by the addition of an inhibitor compound which has a hydroxy group and a keto group on adjacent carbon atoms and is selected from: tetracyclines and acid addition salts thereof and compounds of the formula: wherein R<SP>1</SP> is H or a bond to the adjacent R groups and each R independently represents phenyl or pyridyl (both optionally substituted with C 1-3  alkyl or hydroxy-C 1-3  alkyl; C 1-6  alkyl or hydroxyalkyl or both R groups together with the C atoms to which they are attached represent cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, tetrahydrofuryl, dihydrofuryl, tetrahydropyranyl or dihydropyranyl each of which may be optionally substituted by OH, C 1-3  alkyl or hydroxy C 1-3  alkyl. Specified inhibitor compounds are: acetoin, benzoin, chlortetracycline, erythorbic acid, fructose and pyridoin. A base selected from ammonia, ammonium hydroxide, ethanolamine, propanolamine and isopropanolamine may also be present.
Patent GB-964806-A (GB)
Title: Method of making a grinding wheel
IPC: B24D18/00
Filed: 1961-08-16
Abstract: A grinding wheel has a facing of abrasive material and a resin binder, and a centre mounting of a volatiless resin. Several specific examples of the volatiless resin are described, e.g. 25 grams of powdered anhydride catalyst are mixed with 100 grams of liquid epoxy resin and 85 grams of the mixture is blended with 55 grams of aluminium powder. Alternatively, a liquid aliphatic amine hardener may be used.  In a further example 0.68 grams of benzoyl peroxide are mixed with 0.30 pounds of polyester resin and 3 pounds of aluminium powder are added to the mix. The filler may also be powdered iron, tin, lead or low density silica. Asbestos fibres or wire may also be added as reinforcement. The abrasive facing may be diamond grit bound by a phenol formaldehyde resin. Specification 964,805 is referred to.
Patent GB-490032-A (GB)
Title: Manufacture of lacquers
IPC: C09D5/02
Filed: 1936-10-30
Abstract: Emulsions prepared according to Specification 466,173 are used as coating-compositions.  Specification 447,131 also is referred to.
Patent GB-1474080-A (GB)
Title: Gas detector
IPC: G01N27/12
Filed: 1974-07-03
Abstract: 1474080 Detecting gases electrically NOHMI BOSAI KOGYO CO Ltd 3 July 1974 29570/74 Heading G1N In order to discriminate differing gaseous components which may be present in a gas, a gas detector includes at least two metallic oxide semiconductor gas sensing elements each having a different sensitivity for at least one of the gaseous components to be detected. In one embodiment two sensing elements are connected in series with a resistor across a pair of terminals to which a voltage is supplied and the detector output is taken from across the resistor. By suitable choice of the catalyzer or temperature to which the elements are heated the elements are made to exhibit different characteristics for various gases Figs. 2, 3 where Fig. 2 shows the output voltage when the first element above is connected in the circuit and Fig. 3 shows that for the second element above for various gases hydrogen H, propane P, methane M, isobutane I. Thus knowing the temperature of operation and the output voltage the gases can be identified more precisely. More than two sensing elements may be used to differentiate the gases from each other. In a second arrangement the two sensing elements are connected in adjacent arms of a resistive bridge circuit, Fig. 6 (not shown) so that at a temperature of 130 C hydrogen present in the gas being tested affects both elements the same and there is no output from the bridge whereas propane or methane gas unbalance the bridge and the polarity of the output signal indentifies the gas. Alternatively the sensing elements may be connected in opposite arms of the bridge, Fig. 7 (not shown) in which case Hydrogen produces an output and not the other gases, the bridge being normally in an unbalanced state. In an A.C. energized arrangement Fig. 8 hydrogen gas produces a full wave A.C. voltage across terminals 4, 3, methane a positive half wave and isobutane a negative halfwave, the elements operating at different temperatures. More than one pair of output terminals may be used to detect and identify the gases e.g. an output may be provided across one of the sensing elements as well as across the resistor Fig. 10 (not shown). This arrangement enables individual detection of hydrogen, a compound of propane and isobutane, and methane to be activated. Alternatively the resistor may be omitted and the output taken just across one of the elements, Fig. 11 (not shown). One of the sensing elements may be replaced by a plurality of parallel connected gas sensing elements exhibiting different sensitivities Fig. 12 (not shown). The sensing elements may be formed integrally with each other Fig. 13 (not shown).
Patent GB-1115389-A (GB)
Title: Improvements in or relating to rocket motors
Inventor: ADAMS HENRY HAYES
IPC: F02K9/80
Filed: 1965-07-13
Abstract: 1,115,389. Rocket propulsion plant. ATLANTIC RESEARCH CORPORATION. July 13, 1965. No. 29596/65. Heading F1J. A rocket motor including a combustion chamber having an exhaust nozzle in the rear end wall thereof has a deflector spaced downstream from the nozzle to deflect exhaust gases symmetrically laterally outwards and thereby alter the magnitude of the rearwardly directed axial thrust of the motor. The construction is applicable to liquid or solid fuel rockets. In one embodiment, Figs. 1, 2, the rocket has a combustion chamber with an exhaust nozzle 16 downstream of which is mounted a deflector formed by a conical plug 26 screwed at 28 to angularly spaced arms 20 extending inwardly from similarly spaced brackets 18. The plug 26 can be replaced prior to firing of the rocket by a plug having a different divergence, such as shown dotted at 34 or 36, so as to alter the degree of radial deflection of the exhaust gases and thus the axial thrust of the rocket without changing the back pressure on the combustion chamber. In a modification, Figs. 3, 4 (not shown), the same effect is achieved by replacing plug 26 and arms 20 by a deflector formed by a disc (40) bolted to the brackets 18 and having a central aperture (45). The axial thrust is altered by replacing the disc by another disc having a central aperture of different diameter. Alternatively instead of changing the discs to alter the thrust, a disc (46), Figs. 5, 6 (not shown) having a central aperture (47) is axially slidably mounted on rods (48) downstream of the nozzle 16. The degree of radial deflection and hence the axial thrust is varied by varying the axial position of the disc (46), a pawl (50) and ratchet (49) locking the disc in its selected position. In a further modification, Fig. 8, the combustion chamber has an outlet nozzle 16' and the deflector is formed by a member 53 screwed at 55 to the nozzle. The member has a rearwardly directed outlet aperture 58 and radially directed apertures 62. The axial thrust is changed by replacing member 53 by a similar member (such as 54, Fig. 9, not shown) with a rearwardly directed aperture of different size. The size of the radial apertures is correspondingly changed to give a total effective area the same as before and thus maintain the same back pressure on the combustion chamber.
Patent GB-795008-A (GB)
Title: Proportional letter feed mechanism for typewriters or the like
IPC: B41J19/32
Filed: 1955-10-18
Abstract: 795,008. Typewriters. UNDERWOOD CORPORATION. Oct. 18, 1955 [Oct. 18, 1954], No. 29662/55. Class 100(4) In a typewriter having escapement means to give a spacing movement proportional to the width of the character two stepping or escapement devices are provided which alternately operate in order to allow time for setting them when typing at high speeds. A carriage 23 mounting a platen 11 is urged for letter spacing by a spring motor 26 and is held by the engagement of a set of dogs 33 of one of two stepping or escapement devices 32 with an escapement rack 28 and is released by the proportional feed mechanism to allow feeding in varying multiples of a definite fine increment. Each tooth of the rack 28 is spaced three increments apart and each stepping device comprises a fixed stop and three dogs 33 differing in length by one increment and individually urged by springs 37 about a pivot 35 on a rocker 34 to engage the rack 28 and force it against the letterspacing spring motor 26. Control levers 40 for each set of dogs 33 engage toothed wheels 56 so that only one set of dogs is operative at a time and upon a half tooth movement of the wheels 56 by operation of a universal bar 46, Fig. 1, when a type bar 10 is about to strike acting through arms 48 of a rocker 47, feed pawl 51, Fig. 4, and ratchet wheel 52, the next set of dogs is allowed to snap into engagement with the rack 28 as the other set is cammed away. Means are provided to prevent overthrow and reverse movement of the wheel 52. Upon disengagement of the set of dogs 33 springs 37 move the rocker 34 until its web 34a engages a stop in the position of the lower set in Fig. 4 in which stops 68-70 are settable under the control of springs 74 by the striking action of the type bar 10 acting through its wire link 87, Fig. 1, one of the bails 82, 83, 85, an arm 91, a link 97, and one of levers 102, 103, 105 which act on the springs 74 to position the stops appropriately. Immediately after the stops are set, the changeover in the controlling escapement device is effected. The space measuring strokes may be varied by adjusting the pivoting point of the rockers 34 and the stop for the webs 34a while the stop set by a particular type bar may be altered when the key shift is operated through the action of a bar 99, Fig. 1, moving link ends 88 to co-operate with the bails 82, 83, 85. The fine increments for the proportional letter spacing may alternatively be achieved by engagement of two single dogs alternately engaging with fine teeth on the carriage rack.
Patent GB-858634-A (GB)
Title: Improvements in or relating to chamber filter presses
IPC: B01D25/176
Filed: 1957-09-20
Abstract: 858,634. Filters. LICENCIA TALALMANYOKAT ERTEKESITO VALLALAT. Sept. 20, 1957 [Dec. 20, 1956], No. 29714/57. Class 46. Filter presses are formed by frames 10 and plates 14, Fig. 4, the filter cloths 18 communicating with the space outside the press so as to constitute the sole discharge paths for the filtrate. The plates may be of sheet metal a few mms. thick, or may have a textile coating impregnated with a resilient material ; preferably those parts of the frame which clamp the filter cloth have a resilient coating of rubber or a plastic material. The plates may have crevices, provided on the metal surface or on the resilient coating. The devices may be dispensed with, and a metal mesh or textile cloth 19 mounted between each filter cloth and its adjacent plate. The width of the crevices or of the interstices of the mesh is preferably less than half the thickness of the filter cloth. The suspension to be filtered is introduced at 31, Fig. 9 (horizontal cross-section), through filters 32 into channels 30 formed by apertured rubber rings 29 inoperative 16 of the plates 14, and by apertures 12 in the supporting lugs 11 of the frames 10, whence it enters the filter chambers 17 through branch conduits 13. A filter cloth 18 with backing member 19 is hung, inverted-U fashion, over each plate 14 to cover both its sides, and the edges protrude at the bottom of the press. In Fig. 7 the frame parts 23 are formed from the plates 24 ; the feed conduit is formed by apertures 22. In Fig. 6 (not shown), a peripheral frame part is welded on to each side of each flat plate ; central feed apertures are again provided.
Patent GB-1179078-A (GB)
Title: Process for manufacturing Polyvinylidene Fluoride
IPC: C08F14/22
Filed: 1968-06-21
Abstract: 1,179,078. Polyvinylidene fluoride. DAIKIN KOGYO CO. Ltd. 21 June, 1968 [27 June, 1967], No. 29759/68. Heading C3P. Polyvinylidene fluoride is prepared by polymerizing vinylidene fluoride in the presence of tertiary butyl peroxyisobutyrate at a temperature of 60‹ to 150‹ C. under a pressure of 0 to 200 kg./cm.<SP>2</SP> gauge. The polymerization may be carried out in an aqueous medium using as surfactant perfluorocarboxylic acids and their salts of formula X(CF 2 ) m COOM where X is hydrogen, chlorine or fluorine, M is hydrogen, alkali metal or ammonium and m is 6 to 12, or perchlorofluorocarboxylic acids and their salts of formula X(CF 2 CF 2 Cl) n COOM where n is 3 to 6. Waterimmiscible and hydrophillic organic solvents may be added. In the examples ammonium perfluoro-octanoate is used as surfactant.
Patent GB-228297-A (GB)
Title: An improved container for reserve petrol and lubricating oil for automobiles
IPC: B60K15/06
Filed: 1923-11-26
Abstract: 228,297. Jackson Manufacturing Co. (Bermondsey), Ltd., and Danek, J. Nov. 26, 1923. Petrol and like cans, detachably securing to flat bases.-A container 1 for use on automobiles is divided into two or more compartments by partitions 2 which are slitted at 5 to form strips which are bent to form springs so arranged as to bear against a petrol container 3 in one compartment and lubricating oil container 4 or container for accessories in another compartment. The container is of light sheet metal and the bottom is provided with indentations containing perforated iron or steel reinforcing plates whereby the box can be securely screwed down e.g. to the step of the automobile. A block 9 is mounted in the lid containing screwed holes for taking spare sparking plugs. Automatically locking elements 12, 13 may be provided and the closures of the petrol and lubricant vessels may be of the kind described in Specifications 23843/12* and 105,547, [both in Class 18, Boxes &c.].
Patent GB-1199688-A (GB)
Title: Load Bearing Framework and Apportioning Unit for Concrete Preparation Apparatus
Inventor: ZACCARON LUIGI
IPC: B28C7/04
Filed: 1968-06-21
Abstract: 1,199,688. Concrete preparation plants. L. ZACCARON. June 21, 1968, No.29810/68. Heading G1W. A concrete preparation plant comprising a hopper 4 for cement, a weighing container 6 having compartments, conveyers 5, 8 for supplying cement and aggregate to the container 6 and a conveyer (7) Fig. 2, (not shown) for delivering the weighed cement and aggregate from the container 6 is characterized in that the hopper 4 is removably supported on a framework 1 and is arranged to be moved by a screw device 14 from a horizontal inoperative position Fig. 4 to a vertical operative position on the framework 1 and vice versa. The plant may be automatically or manually controlled and when in operation aggregates are directed to the weighing container 6 by means of one or more conveyers 8 which may comprise a plurality of pick-up buckets until a predetermined amount is in the container. The or each conveyer 8 is then rendered inoperative and the conveyer 5 is actuated to direct cement from the hopper 4 to the container 6 until a predetermined amount has been supplied thereto. The conveyer 7 is then actuated to discharge the container 6. The framework 1 may be provided with a link 16 which is connectable to the hopper 4, the screw device 14 being connectable by fastenings 15 to the hopper.
Patent GB-1288113-A (GB)
IPC: F02P3/08
Filed: 1970-06-19
Abstract: 1288113 Ignition systems ROBERT BOSCH GmbH 19 June 1970 [20 June 1969] 29820/70 Heading F1B An ignition system for an internal-combustion engine comprises an ignition transformer 11 which on its output or secondary side is connected to an ignition circuit containing at least one sparking- plug 13 and on its input or primary side 14 is connected in the discharge circuit of an ignition capacitor 17 containing an electronic discharge switch 18 and also in a D.C. circuit 15, 82, 83 leading directly to a power source 22 and containing an electronic break switch 83. Control means (not shown) are provided for rendering the discharge switch conducting at the instant of ignition to discharge the previously charged capacitor and a circuit (also not shown) is provided for utilizing a voltage induced in the ignition transformer by such discharge for rendering the break switch 83 forming part of the D.C. circuit non- conductive whereby to make electrical energy stored in the ignition capacitor and magnetic energy stored in the ignition transformer participate jointly in the generation of an ignition voltage intended for the ignition circuit. Modification of the ignition transformer 11 and its connection into the ignition system are described. (For Figure see next page)
Patent GB-1060146-A (GB)
Title: Purifying salt solutions
Inventor: VANNDIJK CHRISTIAN PIETER
IPC: C08F20/44
Filed: 1964-07-27
Abstract: A process for the removal of metal ion contaminants which are oxidizable to insoluble oxides and/or hydroxides by reaction with potassium permanganate from an aqueous saline solution containing zinc chloride, comprises adding potassium permanganate to the solution in such a proportion as to provide a substantially stoichiometric quantity thereof in respect of the metal ion contaminants, adjusting the pH of the solution to a value between 5.6 and 10, maintaining the reaction mixture at a temperature between 0 DEG  C. and 50 DEG  C. and separating the precipitated oxides and/or hydroxides from the reaction mixture within one hour of initiation of the reaction.  Preferably, said precipitated oxides and/or hydroxides are separated from the reaction mixture within 15 minutes of the initiation of the reaction.  The metal ion contaminants may be ferrous or manganous ions and the stoichiometric quantity should be calculated on at least the amount of manganese present and preferably on at least the total amount of manganese and iron in the solution. Other contaminants which may be present include aluminium, chromium, lead, molybdenum and copper ions.  The pH of the solution may be adjusted to between 5.6 and 7, and the temperature of the reaction mixture should be from 20 DEG  C. to 25 DEG  C.  Desirably the aqueous saline solution contains at least 10% by weight, based on the solution weight, of dissolved salt, and especially at least 25% by weight of dissolved salt.  The aqueous saline solution may have been employed as a coagulating liquid for spun fibres of acrylonitrile polymers, and residual ethylenically unsaturated monomers may be removed from such a solution prior to the addition of the potassium permanganate. Such monomers are preferably removed by aeration or evaporation with heat, but may also be removed by vacuum or by chemical means. A continuous process for the removal of such contaminants from a saline solution is described.