baber/WOPTO huggingface dataset:
Patent GB-1128225-A (GB)
Title: Variable electrical delay line
IPC: H03H7/32
Filed: 1966-09-12
Abstract: 1,128,225. Delay lines. FERNSEH G.m.b.H. 12 Sept., 1966 [11 Sept., 1965], No. 40652/66. Heading H3U. A tapped delay line having an input E and a number of delay sections each consisting of a series inductor L and a shunt capacitor C, the line being terminated by its characteristic impedance R A , is characterized in that each section is provided with a shunt resistor R<SP>1</SP>, the value of R<SP>1</SP> being equal to the square of the characteristic impedance divided by the effective series resistance of each said section. The purpose of the resistors R<SP>1</SP> is to overcome distortion of the impulses transmitted by the tapping points A 1 , A 2  . . . A n  resulting in decay of the pulse amplitude over a period equal to twice the delay introduced by the line.
Patent GB-982802-A (GB)
Title: Improvements in or relating to wire belts
Inventor: JEFFREY ERNEST HAROLD KENNETH
IPC: B21F27/00
Filed: 1961-11-15
Abstract: 982,802. Endless belt conveyers. BRITISH WEDGE WIRE CO. Ltd. Nov. 14, 1962 [Nov. 15, 1961], No. 40790/61. Heading B8A. [Also in Division D1] A wire fabric for a conveyer belt is composed of coils 13, 13a of opposite twist which interengage straight or crimped transverse rods 19, the ends of the rods being looped as at 12 to interengage with loops 14 formed on the ends of the coils.
Patent GB-911588-A (GB)
Title: Improvements in or relating to hydropneumatic pit props
Inventor: DOMOKOS KALMAN
IPC: E21D15/51
Filed: 1960-11-29
Abstract: 911,588. Hydro-pneumatic pit props. NIKEX NEHEZIPARI KULKERESKEDELMI VALLALAT. Nov. 29, 1960, No. 41005/60. Class 20 (2). A hydro-pneumatic pit prop comprises a base 1 for liquid, a working cylinder 4 connected thereto by an intermediate member 3 and an inner tubular member, see Fig. 1 (not shown) which is slidable in said cylinder and carries a head plate and a bell-shaped rubber piston, said intermediate member having ports 12, 15 for establishing communication between the bell-shaped piston and a conduit 13 carried by the intermediate member and extending into the base. A normally operable control valve 16-21 incorporating automatic safety relief means is mounted in the intermediate member 3 and is adapted to be connected to a source of compressed air to feed liquid from the bore 1 through the ports 12, 15 to the underside of the piston until the prop head engages the main roof at the desired pressure whereupon the pressure hose is disconnected and a closure cap fitted.
Patent GB-933514-A (GB)
Title: Method and composition for cleaning aluminium
IPC: C23G1/22
Filed: 1961-11-16
Abstract: An aqueous cleaning composition which is suitable for cleaning aluminium surfaces when applied at 140 DEG -170 DEG F. comprises a surfactant and 3-10% by weight of a sodium borate, preferably borax. The surfactant preferably comprises a mixture of 0,01-5% anionic wetting agent and 0,01-5% of a nonionic wetting agent, by weight of the aqueous solution.  Suitable nonionic wetting agents are ethylene oxide condensates with fatty acids, with polypropylene glycol, and particularly with C8-12-alkyl phenols, such condensates containing 8-13 ethylene oxide units.  Suitable anionic wetting agents are the C8-16-alkyl benzene sulphonic acids which may contain two further nuclear substituent methyl groups, and alkali metal salts thereof, especially dodecylbenzene sulphonic acid and the sodium and potassium salts thereof.  A concentrate suitable for dissolution in water to form the aqueous composition comprises 90-98% by weight borax and 1-5% each of the anionic and nonionic wetting agents.  Specification 865,497 is referred to.ALSO:Aluminium surfaces, especially those of partially stripped anodized aluminium, are cleaned without corrosion by contact at 140-170 DEG  F. with an aqueous solution comprising a surfactant and 3-10% by weight of a sodium borate, preferably borax. The surfactant preferably comprises a mixture of 0.01-5% each of anionic and nonionic wetting-agent by weight of the aqueous solution. Suitable nonionic wetting agents are condensates of 8-13 units of ethylene oxide with fatty acids, polypropylene glycol, and particularly with C8-12-alkyl phenols.  Suitable anionic wetting-agents are the C8-16-alkyl benzene sulphonic acids which may contain two further nuclear substituent methyl groups, and alkali metal salts thereof, especially dodecylbenzene sulphonic acid and the sodium and potassium salts thereof.  A concentrate suitable for dissolution in water to form the aqueous solution comprises 90-98% borax and 1-5% each of the anionic and nonionic wetting agents. Specification 865,497 is referred to.
Patent GB-1075699-A (GB)
Title: Improvements in and relating to clamping devices for machine tools
IPC: B23F23/06
Filed: 1965-09-28
Abstract: 1,075,699. Mandrels. CARL HURTH MASCHINEN - UND ZAHNRADFABRIK. Sept. 28, 1965 [Nov. 14, 1964], No. 41115/65. Headings B3B, B3K and B3T. A machine tool, such as a hobbing machine, comprises a mandrel 4 and at least two radiallymovable blocks 9 which are engaged with the mandrel upon downward movement of an overarm or counter-steady 5. In operation, the workpieces 1a, 1b are placed on the mandrel 4. The mandrel is raised by fluid-pressure or electric motor means so that its head 17 enters the over-arm 5. The overarm is then lowered until a sleeve 18 engages the workpiece 1a and pushes blocks 12 upwardly causing pins 11 to move the blocks 9 into engagement with the mandrel. Finally, the mandrel is pulled downwardly to clamp the work.
Patent GB-1282108-A (GB)
Title: Reflectometer
Inventor: SELGIN PAUL JOSEPH
IPC: G01N21/55
Filed: 1969-08-19
Abstract: 1282108 Stopping machines in definite positions P J SELGIN 19 Aug 1969 41260/69 Heading F2E [Also in Division G1] The rotation of a filter wheel 56 in a reflectometer (Division G1) is controlled by studs 62 located on the wheel, in conjunction with two independently slowly rotating notched discs 64 and 66. Rotation of the wheel by a clutch and spring assembly (58, 60, not shown) in a clockwise direction, Fig. 5, is prevented when a stud encounters the face of disc 64. However, when the stud becomes aligned with a notch N in the disc 64, the filter wheel can rotate until the stop 62 encounters disc 66 whose notch M is located so that a stud that has just passed through notch N has to wait a short time before passing through notch M. Thus each filter 24 is constrained to remain in the radiation beam a preselected time.
Patent GB-937490-A (GB)
Title: A process for manufacturing polyurethane foam, and the product made thereby
IPC: C08J9/02
Filed: 1959-12-04
Abstract: Polyurethane foam is obtained by reacting, in at least one step, a polyol of molecular weight 200-1,200, an organic polyisocyanate and at least one foaming agent of a hydroxyl compound of boron or aluminium in the presence or absence of a catalyst.  The polyol may be a polyether, polyester, polyesteramide or a vegetable oil having hydroxyl groups. Examples of suitable components are given together with catalysts which include tertiary amines and phosphines and Friedel-Crafts type catalysts.  Optional additives are colourants, silica gel, fuller's earth, metal powder, and liquid paraffins, silicones and non-ionic detergents for foam control.ALSO:Polyurethane foam is obtained by reacting, in at least one step, a polyol of molecular weight 200-1200, an organic polyisocyanate and at least one foaming agent of a hydroxyl compound of boron or aluminium in the presence or absence of a catalyst.  The polyol may be a polyether, polyester, polyesteramide or a vegetable oil having hydroxyl groups. Examples of polyesters, polyethers, isocyanates and foaming agents are given together with catalysts which include tertiary amines and phosphines, and Friedel Crafts type catalysts.  Optional additives are colourants, silica gel, fuller's earth, metal powder, and liquid paraffin, silicones and non-ionic detergents for foam control.
Patent GB-1361726-A (GB)
Title: Durable press apparatus
IPC: D06M11/55
Filed: 1972-09-12
Abstract: 1361726 Crease resisting treatments; steaming textile articles McGRAW - EDISON CO 12 Sept 1972 [13 Sept 1971] 42301/72 Headings D1L and D1P [Also in Division F2] Presses in cotton fabrics are made more durable by hanging the fabrics in a closed chamber, introducing sulphur dioxide formaldehyde and steam to raise the temperature and treat the fabrics, cutting of the steam so that the temperature falls and then blowing heated air into the chamber to raise the temperature of the fabrics to at least 250‹F. The chamber 10 shown in plan in Fig. 1 and cross section in Fig. 5 has doors 13 at each end to allow simultaneous loading and unloading of garments 40 at the end of one complete treatment cycle and before the next, rails 42 along which fabric hangers are equally spaced, hollow walls 11 through which air is circulated by blowers 35 before exiting via outlet 37. Halfway along chamber 10 is a side chamber 25 having air inlet 30 and outlet 29 having pivotable dampers 33 and 31 respectively, vertical conduit 26 blower 27 and heater 28. In treating chamber 12 are steam inlets 39 a sulphur dioxide inlet 43 and a hot plate 44 which generates formaldehyde from paraformaldehyde delivered via hopper 45 and screw conveyor 47. Sloping roof 23 comprises rows of spaced U shaped panels (48, Fig. 3, not shown) having flanges (49, 50) whose width increases as one moves from panel to panel away from the apex of the roof. The spacings between the rows of panels increase correspondingly. The treatment comprises (1) loading garments 40 along the rails 42, closing the doors 13 at each end of the chamber and injecting steam from inlets 39 for 20 seconds whilst blowers 35 are on blower 27 is off, damper 31 open, damper 33 closed and heater 28 off whereby the temperature rises to 120‹F (2) cutting off the steam whilst the temperature falls to 110‹F during 2 minutes (3) circulating air for 3 minutes with dampers 31, 33 open and the temperature falling to 95‹F. These three steps are omitted if the atmospheric relative humidity is above 20%. (4) Inlet damper 33 is closed, blower 27 is stopped and steam, sulphur dioxide and formaldehyde are supplied. The temperature rises to 145‹F during 45 seconds. (5) Steam is cut off and the chemical treatment continued for 5 minutes whilst the temperature falls by 10 to 30‹F. (6) Dampers 31, 33 are opened, blowers 35 turned off, blower 27 turned on, the input of chemicals stopped and heat 28 turned on. Steam and chemicals are removed in a 2 minute blowthrough which raises the temperature to 180‹C. (7) The dampers are closed whilst air circulates internally and the temperature rises to 250 to 280‹F. (8) The dampers are opened and the temperature drops to 200‹F in 30 seconds. (9) Heater 28 and blower 27 are stopped, exit damper 31 is opened and steam is admitted until the temperature reaches 220‹F. (10) Inlet damper 33 is opened, blowers 27, 35 are started and the temperature drops to 180‹F in 5 minutes. (11) Water is sprayed into internal space 36 by inlets 38 to cool the chamber down to its starting temperature.
Patent GB-1087109-A (GB)
Title: A device for checking instrument accuracy and wear
IPC: G01B3/18
Filed: 1966-09-22
Abstract: 1,087,109. Testing gauges. AMERICAN GAGE & MACHINE CO. Sept. 22, 1966 [Dec. 2, 1965], No. 42374/66 Heading G1M. To test a micrometer gauge a number of cylinders 24 of differing diameter are moved out of a casing 12 and the accuracy of the micrometer is tested by measuring the known diameter of each of the cylinders 24. A pointer 36 moves with the cylinders along slot 32 in the casing to indicate by references 34 the diameter of the cylinder which is aligned with the top of the casing. A ball is carried by the closure of the casing to be used for determining the flatness of the measuring faces of the micrometer by measuring the diameter of the ball at a number of positions and comparing the results.
Patent GB-1138748-A (GB)
Title: Circuit arrangement and method for stabilising the current distribution in parallel-connected electronic regulators
IPC: G05F1/52
Filed: 1966-09-26
Abstract: 1,138,748. Automatic current control. FELTEN & GUILLEAUME FERNMELDEANLAGEN G.m.b.H. Sept. 26, 1966 [Dec. 14, 1965], No. 42778/66. Heading G3R. A load 5, e.g. an amplifier in a submarine cable installation, is supplied with constant current from two conventional current regulators connected in parallel, each regulator comprising a series valve 2a or 2b, a measuring resistor Ra or Rb, a setting means 4a or 4b, and an amplifier 3a or 3b over which the control signal is applied to the grid of the associated valve 2a or 2b, the regulators supplying the load over a common measuring resistor R; thus the control voltage for valve 2a is derived by comparing the reference voltage from means 4a with the sum of the voltage drops across resistors Ra and R, and the control voltage for valve 2b is similarly derived from the comparison between its associated reference resistors Rb and R. The specification explains how this arrangement provides a stable working point for the paralel connected regulators.
Patent GB-923176-A (GB)
Title: Sound head for musical wind instrument
IPC: G10D7/026
Filed: 1960-12-13
Abstract: 923,176. Wind musical instruments. MATTH. HOHNER A.G. Dec. 13, 1960 [Jan. 8, 1960], No. 42808/60. Class 88 (2). In a recorder or the like, the knife edge 8 and one wall 9 of the wind channel 5 are formed by a one-piece insert of non-hydroscopic material. The plug 4 is of hydroscopic wood. The non- hygroscopic insert may be extended to include the side walls of the wind channel 5 and portions of the side walls of the window 6, Figs. 5-14 (not shown).
Patent GB-940267-A (GB)
Title: Improvements in or relating to working semi-conductors
IPC: H01L21/00
Filed: 1959-12-17
Abstract: 940,267. Removing material by spark erosion. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 17, 1959 [Dec. 20, 1958], No. 42940/59. Heading B3V. A workpiece 6 of low electrical conductivity, particularly a semi-conductor, is divided or otherwise eroded by at least two electrodes 1 disposed adjacent the zone of the workpiece to be eroded and spaced at a distance which does not greatly exceed the sum of the spacings between each electrode and the workpieee, the electrodes being connected across an electric potential thereby to generate a spark discharge along a path including the said zone, in the presence of a fluid dielectric, to affect spark erosion of the zone. A semi-conductor 6 to be sub-divided is clamped at 7 within a tank containing transformer oil 8. The oil may be circulated by an impeller. Two rectangular plate electrodes 1 of molybdenum separated by a sheet of mica 2 are connected across a condenser 10 charged from a transformer 9. The electrodes are supported for horizontal movement along a rail 4 by a rack and pinion mechanism, Fig. 2 (not shown), and are fed downwardly towards the workpiece by a second rack-andpinion mechanism. A compressed gas fed by a fan or from a gas cylinder, may be used as the dielectric. In a modification, Figs. 3, 4 (not shown), the electrodes are circular plates mounted for rotation on a horizontal shaft driven by a motor and fed downwardly by rack and pinion mechanism. In another embodiment, Fig. 7, separate longitudinal electrodes 1 are embedded in a synthetic resin 20 to form an annulus for cutting through a plate-like workpiece 6. The individual electrodes may be of circular or segmental cross-section, Figs. 8, 9 (not shown), and alternate electrodes are connected to opposite sides of the supply. Alternatively, a rectangular, Fig. 10 (not shown), or grid-shaped pattern, Fig. 11 (not shown), may be provided by the electrode assembly. In another embodiment, Fig. 12, hollow electrodes 1 are disposed on opposite sides of a workpiece 6 and fed towards each other by rack-and-pinion mechanism 5a. In a modification the electrodes are disposed horizontally, Fig. 15 (not shown). The workpiece may be secured by a clamp 22 orby means of suction or fluid pressure acting upwardly. Alternatively one or a plurality of workpieces may be stuck to a foil 24, Fig. 13 (not shown), which may be fed stepwise between the electrodes. In another embodiment, Fig. 16, a workpiece 6 supported upon a table electrode 26 is eroded by three electrodes 1 movable in a direction b.
Patent GB-1452326-A (GB)
Title: Rotary piston internal combustion engines
IPC: F02B53/00
Filed: 1973-09-13
Abstract: 1452326 Admission of working fluid: valves BIRMINGHAM SMALL ARMS CO Ltd 11 Dec 1974 [13 Sept 1973] 42963/73 Heading F1F [Also in Division F2V] To prevent ingress of exhaust into an induction passage of a Wankel I.C. engine, when running at light load, a butterfly valve is disposed adjacent the inlet port in the engine's peripheral wall and is moveable between a first position in which it does not appreciably restrict gas flow and a second position (as shown) at light loads in which inducted gas flows into a working chamber, through semicircular apertures 19 in the butterfly valve, the apertures being closed by a reed valve plate 21 to prevent flow in the other direction. The butterfly valve may be actuated with a throttle valve of the engine's carburetter via a lost motion linkage so that the butterfly valve remains in the second, closed, position until the throttle valve has opened a pre-set amount and after this point it is moved almost instantaneously to the first open position. Alternatively the port valve may be actuated pneumatically from the first to the second position in response to negative pressure within the induction passages.
Patent GB-1064221-A (GB)
Title: Improvements relating to gas-cushion vehicles
Inventor: COCKERELL CHRISTOPHER SYDNEY
IPC: B60V1/00
Filed: 1962-11-13
Abstract: 1,064,221. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. Nov. 8, 1963 [Nov. 13, 1962], No. 42992/62. Heading B7K. In an air cushion vehicle in which the cushion space 13 is enclosed in part by a flexible skirt member 10 and in part by a fluid curtain, to prevent abrasion between the skirt member and the surface over which the vehicle operates the skirt 10 is curved and a fluid flow is passed over the convex surface from a port 14 so that it adheres to the surface by Coanda effect, until it reaches the region of the surface 16, where it forms, with the lower part of skirt 10 and the surface 16, a cushion area 17, the pressure of which deflects the fluid flow outwards as a curtain 15a and deflects the lower part of skirt 10 inwardly and upwardly away from surface 16. The curtain may be caused to break away above the bottom of the skirt by the provision of projections 48 or by vanes (Figs. 10, 11, not shown) spaced at varying distances from the skirt. In a further amendment the Coanda effect is enhanced by applying suction to perforations in the skirt. The skirt may be given peripheral flexibility by corrugating it vertically and trailing portions of the skirt, or transverse members for dividing the cushion, may be inclined (51, 65, Fig. 13, not shown), the trailing edges being sealed by flexible diaphragms to form closed spaces which are pressurized. Fan (53) delivers air to chambers (56, (66) to be discharged over the convex surfaces of members (50), 65) and a fan (58) delivers air over the forward surface of member (51). Air is similarly ejected over the surfaces of lateral skirt members which complete the enclosure of cushion compartments (68), (69). Air for the cavities (51a), (65a) is taken from the respective cushion compartments through conduits (70), (71) and valves (74) and energizing means (72), (73) are provided to raise the pressure in the cavities above the pressure of the corresponding cushions.
Patent GB-1048190-A (GB)
Title: Rubber-based adhesives
Inventor: HADALL THOMAS WILLIAM
IPC: C08L9/00
Filed: 1964-10-21
Abstract: An adhesive composition comprises a blend of 100 parts by weight of nitrile rubber, from 110-190 parts by weight of a vinyl chloridevinyl acetate copolymer, from 10-70 parts by weight of nitrocellulose, and an organic solvent. The composition may also contain chlorinated paraffin wax, alkyl phenolic resin, heat-setting phenolic resin, abietic acid ester resin, chlorinated polyvinyl chloride, cyclic ketone resin, vinyl chloride - acetate - maleate copolymer, chlorinated natural rubber, montmorillonite treated with an amine salt, silica, sulfosuccinate ester, t.-butyl phenol, and aldehyde oxidation product.  Conventional solvents, e.g. methyl ethyl ketone, ethyl and isopropyl acetate, toluene, and xylene may be used.
Patent GB-1046829-A (GB)
Title: Improvements in or relating to devices for the cleaning of drains
IPC: F28G1/16
Filed: 1965-10-11
Abstract: 1,046,829. Drain-cleaning devices. WOMAAPPARATEBAU WOLFGANG MAASBERG & CO. G.m.b.H. Oct. 11, 1965 [June 2, 1965], No. 43043/65. Heading F2N. In a drain-cleaning device comprising a nozzle body carrying nozzles 4 directed obliquely backwards to produce rearward jets when the device is connected to a trailing hose 2 for the supply of water under pressure, the device being propelled through the drain by the reactive thrust exerted by the jets, the nozzles are arranged at the rear of the body with the axes thereof in a common plane and the body has a forwardly-extending slide member 5 with ribs 11 inclined at an angle to the axial plane of the nozzles to produce rearward and downward inclination of the nozzles.
Patent GB-1285625-A (GB)
Title: Process for coating metal members with solder metals
Inventor: HECK FRIEDRICH
IPC: C23C24/10
Filed: 1969-08-29
Abstract: 1285625 Coating with metals F HECK 29 Aug 1969 43062/69 Heading C7F A metal, e.g. brass article is coated with solder by heating to a temperature above the melting point of the solder, immersing in an aqueous suspension of flux and solder, and after removal from the suspension, heating to a temperature above the melting point of the solder. The coating may be remelted to get a smooth surface. The solder may be 90% Pb-10% Sn or 63% Sn-37% Pb, and it may include Cd. The flux may be zinc, sodium, ammonium or stannous chlorides. The suspension may include powdered Ni, Cu or Fe. Further layers of tin or tin and lead may be fused on to the solder coating. The suspension may also be heated to at most 20‹ C. below the melting point of the solder.
Patent GB-1511195-A (GB)
Title: Triazole derivatives
IPC: C07D409/06
Filed: 1976-10-18
Abstract: 1511195 Triazoles and benzotriazoles N- substituted by arylaliphatic groups ICI UNITED STATES Inc 18 Oct 1976 43111/76 Heading C2C The invention provides the title compounds, subject to elaborated definitions and exclusions; IH-triazoles in which the aliphatic part of the substitutent may be interrupted by an oxygen atom, or in which the N-substituent is C 4-6  alkyl or cycloalkyl-alkyl; and 2-(C 6 -alkyl)-2H- triazoles. These compounds have tranquilizing, and (at higher dose levels) sedative activity. Starting materials are also prepared.