baber/WOPTO huggingface dataset:
Patent GB-1534007-A (GB)
Title: Process for changing the colour of pigmented biomass
IPC: A23K10/28
Filed: 1976-10-18
Abstract: 1534007 Changing the colour of pigmented biomass BRITISH PETROLEUM CO Ltd 14 Oct 1977 [18 Oet 1976 23 June 1977] 43108/76 and 26306/77 Heading C6F A process for changing the colour of pigmented microbial biomass whereby to render the biomass more suitable as a component of solid "milk replacer" compositions for young animals involves treating in aqueous suspension of the biomass comprising cells of a single cell micro-organism with a sulphur and oxygen containing compound having reducing properties, preferably sodium hydrosulphite. The compound may be an alkali or alkaline earth metal hydrosulphite, metabisulphite or bisulphite, or sulphur dioxide. The suspension may be a fermentation broth containing viable cells a usually non-pigmented micro-organism, the sulphur and oxygen containing compound being added as the pigment develops, a cream separated from a fermentation broth or a suspension formed by rehydration of dried biomass. Examples relate to the treatment of the cells of a hydrocarbon utilizing strain of Candida lipolytica which had developed a green colour after a period of continuous cultivation, and of methane or methanol grown biomasses having a rusty reddish hue. The treated products assumed a buff or golden colour. Details as to the proportions of the sulphur and oxygen containing compound to be used and of the pH temperature and dissolved oxygen content of the suspension are provided.
Patent GB-1241677-A (GB)
Title: Precision controlled fluid valves
Inventor: SPITERI JOSEPH
IPC: F16K31/363
Filed: 1968-09-11
Abstract: 1,241,677. Valves. J. SPITERI. 11 Sept., 1968, No. 43140/68. Heading F2V. A pressure relief valve has two passages each formed of two sections 17, 19, 18, 20 respectively and connected between the inlet 11 and outlet 12. A piston 15 subject to a differential fluid pressure force extends between the junctions 21, 22 between the sections and is responsive to the pressures P A , P B  thereat and the spring loading 14 to relieve through piston passage 16 into auxiliary passage 27 when the upward force exceeds the downward force. The differential force on the piston is produced by having different flow resistance in the passage sections and by different piston end areas. Adjustable flow restrictors may be inserted in the passage sections and the spring loading may be replaced by an adjustable electromagnetic loading.
Patent GB-1299679-A (GB)
Title: Improvements in pneumatic cylinder-piston units
Inventor: SANDER NILS BORJE LENNART
IPC: F15B15/10
Filed: 1971-09-17
Abstract: 1299679 Diaphragm pistons; brake actuators SVENSKA AB BROMSREGULATOR 17 Sept 1971 43402/71 Headings F2F and F2T A pneumatic cylinder for a vehicle brake system comprises two cylinder housing parts 1, 2 provided with annular flanges for clamping the margin of a piston diaphragm 3, one of the flanges being formed with a cylindrical portion 9 having an inner diameter greater than the outer diameter of the other flange and provided with means, such as a recess 10, for retaining a locking ring 11. Compressed air is supplied through an inlet 6 to move the diaphragm against the action of a return spring 8.
Patent GB-931609-A (GB)
Title: Method of removing and preventing silt accumulations on tank and other surfaces
IPC: C09K23/52
Filed: 1960-12-19
Abstract: 931,609. Cleaning tanks. AMERICAN CYANAMID CO. Dec. 19, 1960 [Feb. 12, 1960], No. 43551/60. Class 138 (1). Silt accumulations are removed from tanks, e.g. the ballast tanks of ships, by contacting the silt with a flocculating agent which is a high molecular weight polymer, e.g. polyacrylamide, and then removing the silt floes. Several examples of other suitable flocculating agents are specified.
Patent GB-1480328-A (GB)
Title: Printing sheet materials
IPC: D06P5/24
Filed: 1973-09-17
Abstract: 1480328 Transfer printing using microencapsulated dyes DICKINSON ROBINSON GROUP Ltd 6 Sept 1974 [17 Sept 1973] 43601/73 Heading D1B [Also in Division B6] Sheet materials, particularly natural or synthetic textiles are printed upon using a transfer web having an image formed by two or more microencapsulated dyes, or dye precursors which react with a material at the surface of the sheet material, by applying treatment to the superimposed sheet and transfer web across substantially the entire imaged width of the web to rupture the capsules and release the dyes or dye precursors to produce a multicolour image on the sheet material. The treatment may be pressure, heat or solvent action.
Patent GB-1029355-A (GB)
Title: Improvements in driving devices for screw thread cutting taps
Inventor: JOHNSON Edward
IPC: B23G1/46
Filed: 1964-10-27
Abstract: 1,029,355. Tapping. E. D. JOHNSON & PARTNERS Ltd. Oct. 27, 1964, No. 43675/64. Heading B3N. A tapping device comprises a driving member 100, a driven member 101, connected to an intermediate member 102 by balls 106, and a nut 103 having a left-hand thread 130. Friction rings 108, 112 are bonded to members 100 and 102, respectively, a washer 114 is bonded to member 102, and a second washer 116 is disposed between washer 114 and ring 108. Washer 114 has three rollers 120 which co-operate with wedge-like surfaces 122 on washer 116, and relative angular displacement of the washers is limited by a pin and elongated slot engagement 124, 126. When the tap reaches the bottom of the hole, member 101 is restrained, and members 100, 102 rotate relatively to each other to release clutch means 120, 122. When rotation of member 100 is reversed to withdraw the tap, members 100 and 101 rotate relatively in the opposite direction, to thus engage the clutch means. In a modification, rollers 120 are carried by member 102, and washer 114 is eliminated. In a further modification, washers 114, 116 are inverted, and their positions reversed. Two pawls 142 are pivotally mounted on nut 103, and engage recesses 146 in member 102, to enable the nut to drive member 101 when withdrawing the tap.
Patent GB-1269518-A (GB)
Title: Device for detecting and depositing yarn ends inside bobbin tubes carrying yarn windings
IPC: B65H67/08
Filed: 1969-09-04
Abstract: 1,269,518. Bobbins. ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI. 4 Sept., 1969 [16 Sept., 1968], No. 43746/69. Heading B8M. [Also in Division D1] Bobbins are provided with an end of a restricted inner diameter so as to assist in the retention of a yarn end positioned in the bobbin tube. The tubes may be lined with rubber.
Patent GB-1191008-A (GB)
Title: Improvements in or relating to processes and apparatus for Checking and Measuring the Tightness of Piston-Rings
IPC: G01M13/00
Filed: 1967-09-27
Abstract: 1,191,008. Testing piston rings. FLOQUETMONOPOLE. 27 Sept., 1967 [27 Sept., 1966], No. 44006/67. Heading F2T. In a method of testing piston rings, the ring 1 is held in position in a test cylinder 2 between two members 3, 4, compressed air is supplied to an annular space 12 adjacent the ring and the air leakage past the ring is measured and provides an indication of the efficiency of the ring; sealing means being provided to prevent leakage of air through the gap 13 in the ring. Compressed air is supplied to the space 12 through passages 16 and 17 in the member 3 and the leakage escapes through a channel 20 in the member 4. A leakage detector (not shown) is provided between the source of compressed air and the passage 16. The member 3 is sealed to the cylinder by an 0-ring 6 and carries at its cover end a packing disc 9 that abuts the ring 1 and has an enlargement 14 that covers and seals the gap 13 in the ring.
Patent GB-1077297-A (GB)
Title: Tape cartridge
IPC: G11B23/04
Filed: 1964-10-28
Abstract: 1,077,297. Cassettes. MINNESOTA MINING & MANUFACTURING CO. Oct. 28, 1964 [Nov. 5, 1963], No. 44050/64. Heading G5B. A cassette containing a reel for holding magnetic tape comprises a precisely dimensioned smooth surfaced rigid cylindrical sleeve 21 held in position between the walls 12 and 13 of the cassette by an expandible barrel nut 22 and screw 24 and forming a bearing for the reel. One or a pair of washers 30 and 31 may be provided to form end bearing surfaces and may be self lubricating. The reel may be formed of two united sections 16 and 17, the section 16 having a vertical circular rim 18 which is fixed to a bushing 19 forming the hub; the bushing 19 is preferably impregnated with a lubricant and the sleeve 21 may be self lubricating alternatively or in addition. The edge of the cassette may be provided with an opening for the tape and with a larger opening through which the reel may be driven, Fig. 1 (not shown).
Patent GB-1205783-A (GB)
Title: Blow-moulding process
IPC: B29C65/74
Filed: 1967-09-27
Abstract: 1,205,783. Blow-moulding. LOVENS KEMISKE FABRIK PRODUKTIONSAKTIESELSKAB. 27 Sept., 1967 [28 Sept., 1966], No. 44059/67. Heading B5A. Hollow objects e.g. saliva ejectors &c. are produced by blow-moulding from a tubular blank or pair of sheets by closing on to the blank the outer, border sections of a blow-mould, inflating the tube to contact the surfaces of the inner mould sections which are then closed to delimit the article and weld the edges and removing waste material. An opening is provided in the weld line so that the interior of the moulded article communicates with the cavity of the waste section and also hollow projections are moulded on the article. These projections may be removed e.g. on removing from the mould or immediately prior to use to form openings.
Patent GB-1181766-A (GB)
Title: A Process for Colouring Products of High Molecular Weight with Pigments
IPC: C09B3/30
Filed: 1968-09-17
Abstract: 1,181,766. Pigment dispersions. CIBA Ltd. 17 Sept., 1968 [20 Sept., 1967], No. 44079/68. Headings B1V and B2E '[Also in Divisions B2, B5, C3, C4 and D1] Organic polymers are coloured by the addition of a dibenzanthrone sulphonamide or an isodibenzanthrone sulphonamide and which may be halogenated, e.g. of the formula: in which one X is carbonyl and the other a direct bond, m' is 1 or 2 and n' and u are each 1-4 their sum being not greater than 4. In the examples the following are coloured, (2) nitrocellulose lacquer, (4) an alkyd-melamine storing lacquer, each is applied to aluminium foil, the latter being stored for one hour at 120‹C. A dispersion of a specified pigment with the sodium salt of 1, 1'-dinaphthylmethane-2, 2'-disulphonic acid in water is prepared by grinding in a colloid mill to a particle size below 1Á. (Example 5). Another pigment is dispersed in water with an ethylene oxide-tert. butyl para-cresol condensate (Example 7).
Patent GB-899855-A (GB)
Title: Improvements in inspection of sheet materials by photo-electric means
IPC: G01N21/89
Filed: 1959-12-29
Abstract: 899,855. Photo-electric flaw detection apparatus. NASH, P. Dec. 29, 1959 [Jan. 12, 1959], No. 44087/59. Class 40(3). In an apparatus for the detection of defects, e.g. pinholes, marks or transparent spots, in sheets of non-opaque material, e.g. paper, the material is moved through an inspection zone comprising photo-cells positioned adjacent a uniformly illuminated surface of the material such that the cells respond to variations in the intensity of diffuse reflected light from the material, and the apparatus is characterized by the provision of means for illuminating the other surface of the material so as to reduce the variation in the cell outputs resulting from variation in texture and composition of the inspected material. The photo-cells 6 and associated amplifiers are contained in an enclosure 9 and receive light through slits 7, 7b. The light is diffused from the top surface of the web of material 2, elongated fluorescent lamps 8 providing the illumination across the web. Flanges 10 prevent external light from entering the apparatus. A further lamp 303 illuminates the lower surface of the web 2 and is housed in an enclosure 301 having flanges 302 which reduce flutter and folds appearing at the inspection zone. The inside surface of this enclosure is polished to form a reflector. The illumination intensity at the lower surface of the material is variable by varying the voltage on the lamp 303 and by movement of the lamp in a line perpendicular to the plane of the web. In the setting up procedure the gain of the amplifiers is set to a desired value and an oscilloscope used to observe the noise level of the output. The brightness and position of lamp 303 are then adjusted until the noise level is at or below a certain value, this value being less than that at which the detection system generates an output pulse, so that pulses are generated only for defect signal above a predetermined level. Specifications 885,278 and 899,854 are referred to.
Patent GB-1319344-A (GB)
Title: Desulphurization of flue gas and similar so2-containing gas with ammonium sulphite
IPC: C01B17/60
Filed: 1970-09-16
Abstract: 1319344 Removing sulphur dioxide from flue gas ESSO RESEARCH & ENG CO 16 Sept 1970 [24 Oct 1969] 44186/70 Heading C1A Sulphur dioxide is removed from flue gas or others containing gases by (a) contacting the flue gas with an aqueous solution containing (NH 4 ) 2 SO 2  in an absorption zone (b) withdrawing a gas stream with a reduced SO 2  content and an effluent solution containing NH 4 HSO 3  from the absorption zone (c) acidifying one portion of the effluent solution with NH 4 HSO 4  to liberate SO 2  (which may be converted (e.g. to SdH 2 SO 4 ) and form (NHa) 2 SO 4  (d) decomposing the (NH 4 ) 2 SO 4  into <SP>1</SP>NH 4 HSO 4  and NH 3  and (e) reacting the NH 3  with the rest of the effluent to give a fresh solution of (NH 4 ) 2 SO 3  which is returned to the adsorption zone.
Patent GB-1530119-A (GB)
Title: High-voltage circuit breakers
IPC: H01H33/70
Filed: 1976-01-09
Abstract: 1530119 Fluid-blast circuit-breakers REYROLLE PARSONS Ltd 9 Jan 1976 [11 Oct 1974] 44228/74 Heading H1N An interrupter unit for a fluid-blast circuitbreaker, which may have SF 6  or oil which is driven by a puffer device 13, 13a or a separate source (not shown) through an insulating tubular blast nozzle 23, has a cluster of movable conducting finger contacts 28 within the nozzle 23 and arranged to engage around an elongated tubular fixed contact 10 in the contact closed position shown and an arcing contact 36 mounted within the cluster for lost-motion relative thereto and spring biased by a spring 40 to abut the fixed contact 10 in the contact closed position. On contact opening (Fig. 2, not shown) the finger tips first move off the contact 10 to engage the arc contact assembly 35, 36 before contacts 10, 36 separate and fluid is forced between them from the nozzle 23 around and into the tube 10.
Patent GB-1185568-A (GB)
Title: Control Systems for material handling mechanisms
IPC: E02F3/43
Filed: 1968-09-18
Abstract: 1,185,568. Electric correspondence control system. INTERNATIONAL HARVESTER CO. Sept. 18, 1968 [Sept. 18, 1967], No. 44335/68. Heading G1N. [Also in Division G3] A materials handling mechanism comprises a tractor loader frame 14 about which a boom 16 is pivoted by hydraulic actuator 20 and carries a bucket 18 pivoted about it by linkages 28, 30 driven by hydraulic actuator 24, each actuator producing a voltage signal of magnitude proportional to actuator extension across respective arms of a Wheatstone bridge 54. The out-of-balance signal controls an hydraulic motor system which moves the bucket to a predetermined position for each of a plurality of boom positions, simultaneously rebalancing the bridge. Manual selection of either of two operational positions of a control lever 22 shifts the spool of a control valve 36 so as to extend or retract a rod 44 forming part of the boom actuator, and simultaneously to apply a direct voltage from a battery 76 to a first diagonal of the bridge. Movement of the rod is coupled by a cable 46 to sliding contacts 48, 49, thus varying proportionally the resistance of a manually selected one of a pair of resistor banks 50, 52 so as to produce a first feedback voltage signal between conductors 56, 62 of the bridge. Similarly a resistance 65, varied by movement of actuator rod 68, provides a second feedback voltage proportional to bucket actuator extension. In either case an equivalent feedback signal may be produced by other means e.g. an hydraulic pressure varying as actuator extension. A given unbalance in voltage amplitude across the second bridge diagonal energizes a relay 84 which operates switch 90 thus energizing, from voltage source 96, one or other of two solenoids 98, 102 to control the retraction or extension of the bucket actuator 24 until the bridge is rebalanced. The values of the resistors in the banks 50, 52 are pre-set for a desired coordination of boom and bucket movement, bank 50 being used for boom raising and 52 for lowering, calibration being effected by use of galvanometer 80 and switch 82. In operation the programme may be varied manually by knob 64 varying bank 50 or 52.
Patent GB-1275122-A (GB)
Title: Electric motor control systems
Inventor: RIESTER WILLIAM CARSON
IPC: H02P3/12
Filed: 1969-09-09
Abstract: 1275122 Windscreen wipers TRICO PRODUCTS CORP 9 Sept 1969 [16 Sept 1968] 44446/69 Heading A4F [Also in Division H2] An electric motor 14 which drives windscreen wipers is associated with a cyclically actuated parking switch 54 responsive to motor rotation, and a manual switch 34 having "continuous run", "parking", and "intermittent dwell" positions. The motor is energized from battery 44 through contacts 102 for continuous operation. When contacts 104 are closed and contacts 102 are opened, the motor operates until contacts 60, 56 are disengaged and contacts 58, 56 are engaged. The armature of the motor is then short-circuited for dynamic braking so that the wipers are stopped in the desired parking position. Closure of contacts 70 for intermittent dwell charges capacitor 92 in timing circuit 110 through contacts 106, 56, 58 at a rate determined by the setting of resistor 108, until uni-junction transsistor 77 conducts to discharge the capacitor. Silicon controlled rectifier 78 is triggered to energise the motor which rotates to open contacts 56, 58 and close contacts 56, 60. Diode 90 is then connected in parallel with the rectifier 78 which is thus extinguished, the motor continuing to be energized through the diode. After one complete oscillation of the wipers, contact 56 returns to contact 58 so that capacitor 94 is charged to trigger silicon controlled rectifier 88 which provides a dynamic braking circuit for the motor. The wiper blades are thus parked in a selected position, the rectifier 88 being extinguished when the motor stops rotating. As soon as the contacts 56, 58 close, the timing circuit 110 is re-energized and the rectifier 78 is triggered after a period to repeat the cycle.
Patent GB-1326529-A (GB)
Title: Hydraulic braking system with anti-lock control
IPC: B60T11/32
Filed: 1971-09-23
Abstract: 1326529 Hydraulic braking system; brake warning devices TELDIX GmbH 23 Sept 1971 [23 Sept 1970 22 April 1971] 44523/71 Headings F2E and F2F An hydraulic braking system for a vehicle comprises a pressure source, e.g. a master cylinder 1, a plurality of brake cylinders 8, 9, 17, 18, a plurality of conduits connecting the pressure source to the brake cylinders and a flow monitor 6, 7, 15, 16 and stop valve 4, 5, 13, 14 in at least one of the conduits, the arrangement being such that on the brakes being applied and a leak arising in at least one of the conduits the flow monitor causes the stop valve to close to seal of the defective conduit(s). The system also includes a wheel anti-lock control 21 fed with signals from sensors 24, 26, 27, 28 associated with wheels of the vehicle, the control on a skid criterion being reached venting the appropriate brake by means of a valve 10, 11, 19, 20. The arrangement is such that the flow monitor cannot actuate the stop valve during skid correction. The flow monitor as shown in Fig. 2 comprises a piston 39 working in a cylinder, the piston being provided with a magnet 50 which when the piston overtravels due to a leak occuring downstream of the monitor actuates a switch which may be a reed contact 51. The switch may also comprise a semi-conductor device susceptible to magnetic fields. The switch also sets off a warning device 33b which by an electric store is kept in operation even after the signal from the switch has terminated. In a further embodiment a piston and cylinder device of the type disclosed in Fig. 2 is incorporated in each limb of the braking system and the relative positions of the pistons monitored to give an indication of leakage (Fig. 3, not shown). In a system comprising two side by side master cylinders (Figs. 4a, 4b, not shown) in which the master cylinders are actuated by a pedal working through a beam an unsymmetrical position of the beam indicating a leak in one part of the system is used to actuate a switch. The inverter is applied to different configurations of brakes e.g. separate systems for front and rear brakes (Figs. 5, 6, 7, not shown).
Patent GB-1004100-A (GB)
Title: An improved wrapping or packaging material and a method of and apparatus for making same
Inventor: REUCROFT GEORGE ROBERT
IPC: D21F11/00
Filed: 1960-12-30
Abstract: 1,004,100. Packaging. FISHER'S FOILS Ltd. Dec. 28, 1961 [Dec. 30, 1960], No. 44746/60. Heading B8C. [Also in Division B5] Packaging material comprising a base sheet, e.g. of aluminium or other metal foil, paper, or paper-lined aluminium foil and having on one side a layer or coating of polythene or other extractable plastics material, and a tear string, e.g. of nylon, sandwiched between the layers or embedded in the polythene &c., is made by drawing an aluminium foil, paper, or other web 1 from a reel, passing it between rollers 2, 3 and then between a rubber-covered roller 5 and a water-cooled roller 6 where it is laminated to a sheet of polythene &c. 10 delivered from an extruder head 4, a nylon tear-string 7 drawn from a reel 8 and guided by an eye 9 being contacted with the web 1 in front of the polythene &c. sheet and embedded between them, or, as shown in chain lines, the string 7a being passed through a tubular guide 11 on the side of the polythene &c. sheet opposite to the web 1 and becoming embedded in the polythene &c.
Patent GB-1510830-A (GB)
Title: Article spraying apparatus
IPC: B05B13/02
Filed: 1975-10-30
Abstract: 1510830 Coating apparatus H BEHR [trading as HERMANN BEHR & SOHN] 30 Oct 1975 [31 Oct 1974] 44817/75 Heading B2L Spraying apparatus comprises a rotatable article carrier 21 and a spraying unit 23, the drive of the carrier and switching of the unit being controlled by fluid pressure medium. The carrier 21 is mounted on a base 19 which fits onto a keyed drive shaft 15, which is driven by a belt and pulleys arrangement from pinion 7. Pinion 7 is rotated by a rack at the end of piston 5 reciprocated by fluid pressure in cylinder 4. Carrier 21 is thus rotated on the forward stroke of the piston, but frictional engagement of surfaces 18, 22 and a free-wheel clutch 27 prevents rotation on the return. The limits of the stroke and operation of the spray unit are controlled by valves actuated by cams on the piston. In an alternative embodiment, Figs. 3, 4 not shown, carriers are rotatably mounted at opposite ends of a rotatable arm (44) mounted on drive shaft 15. The arm is arrested with one carrier in an unloading position, while the other rotates as the spray unit is activated. In a further embodiment, Figs. 6-8 not shown, a pair of carriers are rotatably mounted on a disc (62) which is rotated by action of a fluid operated cylinder and piston-rack. One carrier is arrested in a spraying position by raising a drive wheel (67) which is in turn driven by a fluid cylinder and pistonrack. The position of the spraying unit 23 is adjustable; it is automatically raised during spraying.