baber/WOPTO huggingface dataset:
Patent GB-1251825-A (GB)
IPC: C02F1/44
Filed: 1968-10-22
Abstract: 1,251,825. Reverse osmosis. AQUA-CHEM. Inc. 22 Oct., 1968 [25 Oct., 1967; 20 March, 1968], No. 50188/68. Heading B1X. A membrane structure suitable for reverse osmosis comprises a porous tube 11 of semi rigid material with an inner membrane coating 12 which is semi permeable. The tubes have an impermeable coating 14 at the ends. Tube 11 may be of paper or porous plastics. A reverse osmosis apparatus (Fig. 2) comprises a plurality of rigid tubes 16 each of which supports a membrane structure as above. The ends of tubes 16 are supported in bores 18 of header 20, each bore 18 terminating in an annular groove 22 which serves to collect product water for removal by tube 58. Water to be treated in channel 30 is prevented from reaching grooves 22 by O-ring seals 56.
Patent GB-1252686-A (GB)
IPC: F16D7/04
Filed: 1969-10-08
Abstract: 1,252,686. Screwing and torque wrench attachments. R. GLIMPEL. 8 July, 1969 [9 July, 1968], No. 34394/69. Heading B3N. [Also in Division F2]  An overload release clutch for a threadcutting or torque wrench attachment comprises clutch elements 8 carried by a driving hub 1 and urged into engagement with a driven clutch element 12 by fluid pressure. As shown, a series of axially movable plungers 8 carried by the hub 1 are urged into engagement with recesses 9 in a driven disc 12 by pressure fluid in a chamber 6. The pressure of the fluid in the chamber 6 may be adjusted by screwing a collar 5 along the hub 1 to force pistons 3 into bores 4 and thus reduce the volume of the chamber 6 and increase the pressure of the fluid therein. In Fig. 3 (not shown), a single axially slidable plunger has an irregular end face 25 engageable with a corresponding face on the driven disc. In Fig. 5 (not shown), radially slidable plungers (20) are urged into engagement with a hexagonal part (26) of a driven shaft.
Patent GB-1252806-A (GB)
IPC: H05B33/10
Filed: 1969-02-03
Abstract: 1,252,806. Electroluminescence. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 3 Feb., 1969 [2 Feb., 1968], No. 5742/69. Heading C4S. [Also in Division H1] A photoconductive layer produced by coating a surface with a mixed suspension of photoconductive particles, binder and a volatile diluent and volatilizing the diluent, is similarly coated with a second photoconductive layer, of the same or different material to the first, and the binders of both layers are then set by a single heat treatment. An image converter, Fig. 3, is produced by applying a transparent electrode 5, an electroluminescent layer 4 and an optical feedback prevention layer 3, which may be of a reflective material, e.g. barium titanate, or an opaque material in a binder, to a transparent substrate 6, e.g. of glass. A spacer frame 7 having an upper section (7<SP>1</SP>), not shown, is adhesively secured to the surface and filled with a mixture comprising photoconductive particles, epoxy resin as a binder, and a volatile diluent, e.g. acetone or alcohol, and levelled with a doctor blade. The layer mixture is then dried so that it shrinks to the level of the lower frame member 7 to form layer 22. The upper frame member (7<SP>1</SP>) is removed and a wire 1 is wound round the structure to form a foraminous electrode. A second layer 21 of photoconductor is applied over the electrode using a similar method and the structure is heated to cure the binders of the layers 21 and 22. A conductive paint, e.g. containing silver, is applied to the ends of the substrate to interconnect the turns of wire 1 and the excess portions of wire 1 are removed. An alternative construction in which the upper photoconductive layer extends between the foraminous electrode and the lower photoconductive layer, Fig. 1 (not shown), is produced by selecting the thicknesses of the spacer members and the dilution of the photoconductive mixture so that the lower photoconductive layer shrinks below the level of the top of the lower spacer frame (7). The upper photoconductive layer is then formed, the upper spacer frame is removed, foraminous electrode is applied a further photoconductive layer is applied over the electrode, and the layers are set by heating. The foraminous electrode 1 may also comprise a grid and the transparent electrode 5 may be a layer of stannic oxide.
Patent GB-1257012-A (GB)
IPC: G02B5/23
Filed: 1966-03-02
Abstract: 1,257,012. Photochromism. BRITISH AIRCRAFT CORP. Ltd. 1 June, 1967 [2 March, 1966], No. 9244/66. Heading C4S. A fibre optic stack, suitable for use in the optical system disclosed in Specification 1,257,011, has its fibre glass constituted by photochromic glass. In one embodiment (Fig. 4, not shown) the stack is twisted through 180 degrees to erect the image.
Patent GB-1258422-A (GB)
IPC: F16H61/42
Filed: 1969-01-03
Abstract: 1,258,422. Hydrostatic transmission control. JOSHUA SHAW & SONS Ltl. 18 Dec., 1969 [3 Jan., 1969], No. 509/69. Heading F2D. A control for a vehicle hydrostatic transmission having a variable displacement swashplate pump 10 in closed circuit with one or more motors comprises a piston 28 within a cylinder 22 connected at its upper end by a link 30 to a pump swash-plate displacement adjusting rod 16, driver operable means 18, 20 to tilt the cylinder 22 and control the pump displacement and means connecting the pressure in the transmission working circuit to the cylinder 22 so that when the working circuit pressure exceeds a predetermined value the effective length of the piston and cylinder is changed to reduce pump displacement and prevent overloading the transmission. The pump displacement is controlled by pedals 18, 20 connected to master cylinders 40, 42 which supply pressure liquid to slave cylinders 34, 36. The pistons of the slave cylinders are connected to the cylinder 22 which pivots at 26 on a fixed frame. Depression of one of the pedals 18, 20 causes the slave cylinders 34, 36 to tilt the cylinder 22 about its pivot 26 and thus adjust the pump displacement. On overload excess pressure in the working circuit acts through a shuttle valve 54 on the upper end of the piston 28 to move the latter down against the bias of a spring 54 to reduce pump displacement. When the overload is removed the spring 54 restores the transmission ratio to that selected by the pedals. On release of both pedals 18, 20 a spring (50) moves the cylinder 22 to its neutral position.
Patent GB-1265464-A (GB)
IPC: F01D5/22
Filed: 1970-02-05
Abstract: 1,265, 464. Turbomachine rotors. WESTINGHOUSE ELECTRIC CORP. Feb. 5, 1970 [March 21, 1969], No. 5491/70. Heading F1T. The blades in an annular row on an axial-flow elastic-fluid turbine or like rotor are interconnected in equal arcuate groups, the number of groups being equal to or less than the fundamental resonant frequency of vibration of the blades in a tangential mode divided by the rated maximum running speed of the rotor, the fundamental frequency being at least twice the rated maximum speed. E. g. if at the rated maximum rotor speed the blades tend to vibrate at their fourth harmonic frequency then the blades would be inter-connected in four groups each spanning 90 degrees, the vibratory forces in each group tending to cancel each other out. The inter-connecting means may be arcuate tip shroud segments (13), Fig. 1 (not shown), or lashing members (54, 55), Figs. 5, 6, (not shown).
Patent GB-1290892-A (GB)
IPC: G03B35/20
Filed: 1969-12-15
Abstract: 1290892 Optical projection apparatus RICOH K K 15 Dec 1969 [30 Dec 1968] 60968/69 Heading G2A A projector 5 is mounted on a chair 2 and throws images on to a reflex screen 1 via a mirror 3 for viewing by an observer seated in the chair. Multiple screens receiving images from more than one projector are disclosed. An illumination system in one embodiment comprises a toroidal mirror as lens used with a normal lamp and a semi-annular mirror 3.
Patent GB-1295011-A (GB)
IPC: H03K3/286
Filed: 1971-01-12
Abstract: 1295011 Transistor bi-stable circuits STARK - STROM - ANLAGENBAU ERFURT VEB 12 Jan 1971 1361/71 Heading H3T An emitter coupled pair T1, T2 have their base and collectors reciprocally coupled by respectively R12 and D11 in series, and D8, R7 and Zener diode 6 in series, an input L being applied to T1 base. L is applied through R14, D13 in series, E being the set input, and L the clear input, the bi-stable being said to be insensitive to spurious signals and responsive to slowly changing inputs at E. Diode 13 prevents feedback to L of positive changes at T1 base, and T11 blocks the clear pulse at L from T2 collector.
Patent GB-1295698-A (GB)
IPC: E21B19/15
Filed: 1970-11-26
Abstract: 1295698 Drilling earth &c COMPAGNIE FRANCAISE DES PETROLES 26 Nov 1970 [9 Jan 1970] 56341/70 Heading E1F Drill pipe racking system comprises a beam 16 pivoted at 40 on a derrick 17. The beam carries clamps 7A1, 7B1, 7C1, 7D1 which hold drill pipes so that they may be transferred between a horizontal storage position and a vertical operating position. The beam is associated with horizontal and vertical conveyors 47, 48 which carry drill pipes to and from the clamps on the beam. The beam is pivoted by an actuator 4 and is held in the vertical position by a latch (Fig. 8, not shown) which may be released by an actuator (10). The derrick 17 also has clamps 9A1, 9B1, 9C1 on handling arms 8A1, 8B1, 8C1 respectively, and a block 23 which is movable laterally on a track 24 to allow the beam to pivot over the drill axis. The beam is so arranged that when vertical, the drill pipe is offset from the drill axis, and the handling arms are then extended to align them. The block is moved along the track 24 by an actuator (2, Fig. 5 not shown). The track is' mounted on a vertically movable frame 30. Actuators are also provided to operate the clamps, to move the handling arms, and to open and close the elevator collar 18. A control system is described (Figs. 12-19, not shown) by which the system may be operated automatically, using limit switches at the ends of the ranges of movement of the actuators to initiate and control further operation.
Patent GB-1305379-A (GB)
IPC: F16H61/44
Filed: 1969-02-11
Abstract: 1305379 Hydrostatic transmission NATIONAL RESEARCH DEVELOPMENT CORP 6 Feb 1970 [11 Feb 1969] 7330/69 Headings F2D and F2K [Also in Division F1] In a vehicle hydrostatic transmission comprising a dual-capacity pump 14 delivering selectively to one or both pairs of motors 10, 12 and 11, 13 on the vehicle wheels to provide four ratios, the pump comprises two rows of reciprocating balls 17, 18, in respective cylinders having delivery and return lines 21 in a pintle 22 communicating with ports 23, 19, and is controlled by a rotary valve 29 connecting motors 10, 12 to the pump while motors 11, 13 are shorted out, or connecting all four motors to the pump, and an axially sliding valve 24 which can short out the cylinders for balls 18 to render them ineffective. The valve 24 includes a land 25 having three axial positions; as shown the land renders both rows of balls effective; in the broken line position connecting both cylinder rows to a peripheral groove 26 in the valve it renders both rows ineffective for neutral; and a third position abutting a partition 27 between the cylinder rows to connect balls 18 only to the groove 26. A rack and pinion 39 acts on a reversing valve sleeve 20 surrounding the valve 24. A lever 32 positions both valves and is pivoted at 33 on valve 29 and carries a bead 35 on a sector on the lever engaging a second lever 34 having a fixed pivot and positioning valve 24. The pump is driven through a centrifugal or other clutch.
Patent GB-1306792-A (GB)
Title: Apparatus including displacement-responsive inductive-transducers
IPC: G01C19/28
Filed: 1971-01-27
Abstract: 1306792 Measuring angular displacement electrically SMITHS INDUSTRIES Ltd 24 Jan 1972 [27 Jan 1971] 3310/71 Heading G1N A rate gyro 10, Fig. 1, rotating about a spindle 11 is supported in a gimbal structure 1 for rotation about a perpendicular axis 3, whereby an angular velocity of the assembly about a mutually perpendicular axis 13 produces an angular displacement of the gimbal structure about axis 3, which is measured by a variable coupling inductive transducer 7 incorporating a temperature compensation network. The gimbal structure 1 is supported by bearings 4, 5 and a torsion bar 6. The transducer 7 comprises a 12-pole stator 8, Fig. 2, fixed to the main housing 2 and a 6- pole rotor 9 mounted on the gimbal structure 1. The stator is wound with a primary winding 21, embracing the poles in pairs with adjacent pole pairs wound in opposite directions, and a secondary winding 22 wound,similarly to the primary winding 21 but displaced by one stator pole pitch. Hence displacement of the rotor 9 through 60 degrees produces one complete amplitude cycle of induced voltage in the secondary winding 22 as the poles or rotor 9 vary the coupling between the primary and secondary windings. To compensate for errors produced by variations in temperature, a further secondary winding 29 is wound with the primary winding 21 and its constant voltage is combined with that of the secondary winding 22 in a circuit, Figs. 3 and 4, (not shown), which includes a thermistor, and is arranged to compensate for changes in the output with zero angular velocity input about axis 13 and for changes in the output scale factor.
Patent GB-1317440-A (GB)
Title: Input device for an x-y plotter
IPC: G06G7/57
Filed: 1969-10-16
Abstract: 1317440 Transformation of co-ordinate systems FOSTER WHEELER Ltd 25 Sept 1970 [16 Oct 1969] 50918/69 Heading G4G A device is used for transforming system of orthogonal lines into a system of co-ordinates in such a way that the second system, which is represented as two voltages, corresponds to an isometric projection of the orthogonal system. The device comprises a plurality of substantially identical modules, each consisting of a transformer 4 and a rectifier 5 which supply power at a voltage according to the setting of a potentiometer 3, which can be measured on a voltmeter 7. This voltage is applied to resistors 22, 23 which are connected in parallel and are tapped at respectively 0À866 (= cos 30 degrees) and 0À5 (= sin 30 degrees) of their length. The voltages available at terminals 25, 26, 27 relative to terminal 24, are respectively 0À5, 1À00 and 0À866 of the voltage shown on meter 7. In use this latter voltage is chosen to represent the length of a first line and according to its direction from a selected one of its ends, north, south, east, west, up or down, contacts 12-21 are closed in various combinations, and voltages corresponding to the X and Y co-ordinates of the other end of the line in an isometric projection are obtained between terminals 10 and 11 and 8 and 9 respectively. A plot switch of the first module is closed and the X and Y co-ordinate voltages are delivered to an X-Y plotter connected to terminals 28-31, the plotter then drawing the line from an arbitrary origin in isometric projection. Module 2 is set up in a similar manner to represent a second line connected at a right angle to the first. On actuating the plot switch of the second module the second line is drawn in isometric projection from the said other end of the first pipe as a result of series connection between the outputs of the modules. The operation is repeated with successive modules representing successive interconnected lines.
Patent GB-1318198-A (GB)
Title: Electric heating elements
IPC: H05B3/48
Filed: 1969-10-16
Abstract: 1318198 Electrolytic removal of metal ions from insulating material THERMAL SYNDICATE Ltd 15 Oct 1970 [16 Oct 1969] 50889/69 Heading C7B [Also in Division H2] A D.C. electrolysing potential is applied (e.g. periodically) across a refractory insulating material of an A.C. electric resistance heater to remove metal ions therefrom. The heater comprises an axial resistance element surrounded by refractory insulating material and an outer electrically conducting sheath. A D.C. electrolysing potential of not less than 5 volts is applied between the sheath and resistance element to reduce the rate of rise of leakage current occurring across the refractory material. It is suggested that, in use of the heater, metallic ions originating from the resistance element and outer sheath migrate into the insulating material and that the D.C. electrolysing potential sweeps these ions to the negative electrode of the D.C. circuit. Closure of a switch 3 causes an electric heating element 1 to be supplied from an A.C. source 2. When the switch 5 is open a D. C. potential is applied between the heating element 1 and a surrounding sheath, which is earthed, by way of a diode D and resistor R. The switch 5 may be periodically operated by the mechanism which is cyclically operated to control the heat output of the heating element 1. In a second embodiment the supply to the heating element is controlled by a triac which is fired asymmetrically in the positive and negative half cycles of the A. C. supply thus the heating element can be considered to be supplied with the combination of an A. C. voltage with a D.C. bias. The asymmetry in the firing of the triac is provided by means of a zener diode in the triac control circuit.
Patent GB-1318786-A (GB)
Title: Propulsion mechanism for a ship
IPC: B63H23/06
Filed: 1970-05-19
Abstract: 1318786 Ship propulsion DAVID BROWN GEAR INDUSTRIES Ltd 18 May 1971 [19 May 1970] 24131/70 Heading B7V The crank shaft 31 of a diesel engine 30 drives a co-axial propeller shaft through a transmission gearing having a lay shaft 36 which is arranged parallel to, and transversely of, shafts 31, 35. As shown gear 39 is driven from shaft 36 through a pneumatic clutch 41 of the expansible gland type, but in the construction illustrated in Fig. 1, (not shown), gears corresponding with gears 37, 39 are permanently coupled to the lay shaft, and a clutch (13) is incorporated between flexible coupling 32 and first gear 33. A second gear train 42, also meshing with gear 33, drives a generator 43 through a clutch 45 and flexible coupling 46.
Patent GB-1321642-A (GB)
Title: Dough prover pockets
IPC: A21B3/15
Filed: 1970-06-25
Abstract: 1321642 Dough proving devices A LAW and M K LAW [trading as A LAW (PLASTICS) CO] [1 June 1971 25 June 1970] 30993/70 Heading A4D A dough prover pocket comprises an integral network 11 overlying an aperture defined by a rim 12, and an element 13 superimposed on the network and in register with the rim, with the element attached to the rim. In the embodiment shown the rim comprises a generally cylindrical part 12a, a bead 12b, a lip 12c, and a platform 12d. The element 13 is generally annular and has a portion 13b attached to the rim and a portion 13a overlying the portion 13b and depending outwardly of the rim. The element and the rim may be formed of synthetic plastics and may be attached together by high frequency welding. Reference is made to Specification 901669.
Patent GB-1323461-A (GB)
Title: Drying apparatus for papermaking
IPC: D21F5/02
Filed: 1970-08-21
Abstract: 1323461 Web dryer T KOBAYASHI 21 Aug 1970 40373/70 Heading F4G An apparatus for drying a paper web P comprises drying cylinders 1, 2 and, a number of perforated jet-boxes 3 through the nozzles 5 of which passes hot air which is directed substantially normally at the web so that it follows an undulating path. Means for guiding the web and for supplying hot air to the jet-boxes 3 are provided. The web enters the drying enclosure 8 over a roller 9 and follows a sinuous path, at low tension, guided by rollers 2, 7a, 6a, 6b, 7b, 2 and so on until it leaves via rollers 10 and 11. Blowers 15 and 16 supply hot air to the jet boxes via ducts 12 and conduits 17, 18, 19, 13, 14. A method of drying paper by such a method is also claimed.
Patent GB-1325213-A (GB)
Title: Shuttleless weaving looms
IPC: D03D47/00
Filed: 1970-11-27
Abstract: 1325213 Jet looms CARRINGTON & DEW HURST Ltd 22 Nov 1971 [27 Nov 1970] 56842/70 Heading DIE  A fluid jet loom has weft patterning which allows the insertion of a number of wefts in any desired sequence, weft mixing or take-up to continue without the insertion of any weft. Wefts p, p' pass through individual preloaded tensions 25, around guides 26, through nip rollers 10, 11, into suction storage tubes 20 and from the suction storage tubes 20 to clamps 19 and a slidable infection head IH having separate picking nozzles 49 for each weft. The nip rollers 10, 11 rotate continuously are are selectively movable apart by a pattern mechanism so that they cease to feed weft, the same pattern mechanism operating to selectively open and close the clamps 19 and to move the injection head IH to position a nozzle 49 in the picking position. The pattern mechanism may be a photo-electric device operating from reflective strips on an endless card, a programme card with apertures therein to allow feelers to pass through and make electrical contact to operate the various mechanisms, the mechanisms may be operated from the loom dobby, or a cam a lever mechanism may be provided for an unvarying sequence of weft picking.
Patent GB-1328754-A (GB)
Title: Impeller apparatus
IPC: F04D25/08
Filed: 1971-03-05
Abstract: 1328754 Centrifugal fans SMITHS INDUSTRIES Ltd 2 June 1972 [5 March 1971] 6064/71 Heading F1C A fan apparatus for providing two separate gas flows comprises a motor 1 having a shaft 2 extending from one end 3 thereof and on which are mounted first and second single-inlet centrifugal fan rotors 6, 16 within respective volute casings 7, 17, fan 16 being capable of providing a larger gas throughput than fan 6. The inlet 8 to volute 7 encompasses motor end 3 such that fan 6 draws a flow of cooling air through the motor. The inlet 18 to volute 17 faces in the opposite direction and guides hot air from a central heating system to fan 16. The tangential outlets (21), 22 of the respective volutes 7, 17 are disposed at right angles to each other, Fig. 2 (not shown). The end walls 9, 19 of the volutes may be bolted to each other or only a single wall 19 provided. Wall 19 resiliently supports motor 1 via brackets 20. The fan rotors 6, 16 are cylindrical having a ratio of blade axial lengths of 1 to 4 and of diameters of 15 to 37.
Patent GB-1343533-A (GB)
Title: Apparatus for shelling edible crustacea
IPC: A22C29/02
Filed: 1971-01-26
Abstract: 1343533 Shelling crustacea R J HARMAN 24 Jan 1972 [26 Jan 1971] 3229/71 Heading A2U Edible, crustacea, e.g. prawns or scampi, are peeled by a method which consists in severing the shell-like covering along the back and belly whilst the crustacea are moving longitudinally past cutting means, and removing the severed parts of the covering from the fleshy body portion. In the apparatus shown, crustacea are placed head first and belly down on an endless belt 3 where it passes over a pulley 4. The belt, which extends to a pulley 5 and passes also over an intermediate pulley 6, is divided longitudinally to provide a gap through which an adjustably mounted, belly-slitting rotary saw 12 protrudes. The crustacea are pressed against the belt 3 by a pair of squaresection belts 23 running side-by-side over V- grooved pulleys 24, 25, 26, 36, 22, 28, 29, 30. The pulleys 22 are freely mounted on a shaft 13 on either side of a back-slitting saw 11 which is power driven through the shaft 13. The pulleys 28, 29, 30 are carried by spring- loaded levers 31, 32, 33 pivotally mounted on an arm 19 carrying the shaft 13 so that the height of the saw 11 is automatically adjusted by the crustacea passing under the pulleys 28, 29, 30. As a crustacean leaves the saw 11 the slit on its back is opened firstly by a sharpedged wheel 35 between the pulleys 36 and then by a small fixed plough 37. The crustacean is then conveyed to a point where the slit on its back is engaged by a square-section endless belt 54 running through a groove under a fixed plough 51 which forces the two sides of the shell apart, resulting in separation of the shell from the body which is delivered over the end of the belt 3.