baber/WOPTO huggingface dataset:
Patent GB-1573000-A (GB)
Title: Error detection and correction system
Inventor: GREGG GORDON E
IPC: G06F11/10
Filed: 1976-12-22
Abstract: Apparatus for directly decoding and correcting double-bit random errors per word and for detecting triple-bit errors per word is disclosed   Said apparatus comprises a syndrome calculator which operates upon codewords received from memory as generates syndromes   The  syndromes are operated upon and translated by a mapping device which generates pointers identifying the bits which are in error   The pointers are then passed through decoding means to generate error words which are summed with the received word from memory to provide a corrected codeword.  The syndrome calculator may further provide a parity check signal to determine if a three-bit error is present, in which case the  decoding means are not enabled and a signal is generated indicating that a triple-bit error has been detected which is not correctable. This invention includes circuitry for systematically multiplying two arbitrary field elements in a Galois field GF(2m). Each element is represented by an m-bit binary number.  The multiplicand field element is passed serially through a plurality of m-1 modulo multipliers.  The multiplicand and the product from each of the m-1 modulo multipliers are passed through networks which are gated by bits of the multiplier field element forming partial products.  The partial products are summed to form the bit representations of the final product.
Patent GB-1293020-A (GB)
Title: Improvements in or relating to lighting units
IPC: F21V17/00
Filed: 1970-11-11
Abstract: 1293020 Lighting fittings ELEKTRO MIBO AB 11 Nov 1970 [12 Nov 1969] 53620/70 Heading F4R  A lighting fitting comprises two end panels 10 interconnected by two relatively narrow side rails 12 and a relatively wide back rail 11 which supports fluorescent tubes and their accessories or filament lamps, the fitting being reinforced by stays 14, 15 which extend between the rails and have T-shaped engagement portions 16, 17 fitting in U-shaped slots 13 on the rails. Glass covers 20, 21 extend between the end panels and fit between projecting portions 22, 23 on the panels and in U-shaped grooves 18, 19 on the rails. The end panels, rails and stays are all made of aluminium and the stays may be formed as a one-piece triangular member.
Patent GB-1444860-A (GB)
Title: Frequency synthesiser
IPC: H03J7/02
Filed: 1974-12-12
Abstract: 1444860 Frequency synthesiser MULLARD Ltd 12 Dec 1974 53792/74 Heading H3A A frequency synthesizer comprises a phase lock loop including a VCO6, a divider 8 having a division ratio N settable by 12, 14, a phase comparator 4, a loop filer 18 and a voltage multiplier 17 having a multiplication factor n proportional to the division ratio N and also controllable by the arrangement 12, 14. The arrangement 12, 14 may include manually operable decade switches 12, a decimal to binary converter 14 or an alternative arrangement for providing a programmable input to divider 8 and multiplier 17, The multiplier 17 may comprise a multiplying digital to analogue converter having an output voltage which is a linear product of a digital word at inputs 20 and an analogue input voltage at input 16. The VCO6 may be a multivibrator or a gyrator controlled oscillator. Loop gain remains unchanged irrespective of changes in N as the ratio of the multiplication factor to the division factor is always arranged to be constant. In a further embodiment (Fig. 2, not shown) a voltage adder to which a preset voltage may be applied is inserted between the output of the multiplier 17 and the oscillator 5. With this arrangement, by adjusting the preset voltage to equal the zero frequency offset voltage of VCO 5, the input voltage to the multiplier is maintained constant at steady state irrespective of the value of N.
Patent GB-1286768-A (GB)
Title: Magnetic field probe
Inventor: SLAFFER MARK
IPC: G01R33/10
Filed: 1971-05-22
Abstract: 1286768 Demonstrating magnetic field patterns M SLAFFER 18 Feb 1972 [22 May 1971 20 Nov 1971] 16505/71 and 54000/71 Heading G1N A hand-held probe for demonstrating the pattern of a magnetic field in three dimensions, comprises a bar magnet gimballed or fluid-supported so that it can align itself with the field. In Fig.1, the magnet 1 is pivotted at 3, 4, 5, 6, in a flat frame 7 attached to a flat handle 8 so that, when not in use, the apparatus can be folded flat. A transparent dust-cover (not shown) may be provided, either in the form of two clip-on half-cylinders or integral with the outer frame 7 of the gimbal. In another arrangement, Fig.2 (not shown) the magnet (11) is fixed along a diameter of a sphere (12) which may be aerated or shell-like and filled with liquid, the sphere being fluid-supported within a container (13) attached to a handle (15).
Patent GB-1180660-A (GB)
Title: Improvements in or Relating to Photographic Enlargers
Inventor: STEFFEN PETER
IPC: G03B27/46
Filed: 1967-11-28
Abstract: 1,180,660. Photographic enlargers. CIBA Ltd. Nov. 28, 1967 [Dec.2, 1966], No. 54179/67. Heading G2A. A photographic enlarger has a rotatable original holder 2, two objective lenses of different focal lengths carried in a holder 3, one of which lenses is positioned in the light path between the original holder 2 and an adjustable mask 6. The original holder 2 has a major axis and a minor axis and is rotatable about the optical axis 5 between a first position Fig. 5b (not shown) in which the major axis is parallel to the intended direction of movement of printing material fed by means 8, and a second position Fig. 5a (not shown) wherein the major axis is at right angles to this direction. The mask 6 is adjustable in a direction parallel to the intended direction of movement of printing material between a larger and smaller dimension in this direction, the larger dimension Fig. 4b (not shown) corresponding to the first position of the holder 2 and the smaller dimension Fig. 4a (not shown) to the second position thereof. The lens (22, Figs. 2, 3 not shown) of shorter focal length is in the light path for the first position of the holder 2, and the lens (23) of longer focal length for the second position. This arrangement ensures that enlargements of two different sizes can be printed consecutively on the same reel of printing material in such a way that both prints occupy the full width of the material. Sequence of operations. When the holder 2 (mask 50 in Figs. 5a, 5b) is set to its first position, a limit switch (53s) is closed, thereby completing the circuit to a motor (28) which rotates the lens holder 3 (carrier plate 21 in Figs. 2, 3) to bring the lens (22) into the light path. When the lens is correctly positioned a switch (29s) is opened and the motor stops. An electromagnet (44) is energized in this position to adjust the mask 6 to its larger dimension. When the holder 2 is set to its second position, a limit switch (52s) is changed over, thereby de-energizing the electromagnet (44) and completing a circuit to the motor 28 which rotates the lens holder 3 to bring the lens (23) into the light path. When the lens is correctly positioned a switch (30s) is opened and the motor stops. De-energizing the electromagnet (44) causes the mask 6 to be set to its smaller dimension.
Patent GB-543345-A (GB)
Abstract: 543,345. Halogenated acylamino sulphonic acids; moth proofing. GEIGY AKT.-GES, J. R. Dec. 13, 1940, No. 17642. Convention date, Dec. 14, 1939. Addition to 534,002. Samples furnished. [Class 2 (iii)] (Also in Group VIII] Products suitable as protective agents against moths are prepared by acylating aminosulphonic acids of the benzene series with sulphonic acids or carboxylic acids of diphenylether or diphenylthioether, or reactable derivatives thereof one or both of the components having halogen as a substituent. In examples, 3:4-dichloraniline-6-sulphonic acid is acylated with 4-chlor-1:1<SP>1</SP>-diphenylether-4<SP>1</SP>-carboxylicacidchloride and with 4-chlor-1:1<SP>1</SP>-diphenylether-4<SP>1</SP>-sulphonicacidchloride, the latter chlorides being obtained from the corresponding acids by means of phosphorus pentachloride. The following components may also be used : 4-chloraniline-6-sulphonic acid, 2:3-dichloraniline-5-sulphonic acid, mixtures obtained by sulphonation, nitration and reduction of odichlorbenzene, 2<SP>1</SP>:4-dichlor- and 2:4- dichlor- 1:1'- diphenylether-4 <SP>1</SP>- carboxylicacid-chloride and I :1<SP>1</SP>-diphenylether-4-sulphonic acid-chloride. Chlordiphenylethercarboxylic acids are prepared from the corresponding chloraminodiphenyl ethers by diazotizing and forming the nitrile with subsequent saponification. 4-Chlor 1:1<SP>1</SP> - diphenylether - 4<SP>1</SP> - sulphonicacid is prepared by diazotizing 4-chlor-4<SP>1</SP>- amino-1:1<SP>1</SP>-diphenylether, treating with sulphur dioxide in the presence of copper sulphate and oxidizing the resulting sulphinic acid with permanganate. Samples have been furnished under Sect. 2 (5) of products' prepared by condensing 4- chlor- and also 3:4-dichlor-aniline-6-sulphonic acid with 4-chlor-1:1<SP>1</SP>-diphenlsulphide-4<SP>1</SP>-carboxylic acid chloride. The latter is obtained from the corresponding acid which is prepared by reducing the condensation product of pchlorthiophenol and p-nitrochlorbenzene, replacing the amino group of the product by a cyano group and saponifying.
Patent GB-1450104-A (GB)
Title: Reusable canister
IPC: B64D1/02
Filed: 1973-11-22
Abstract: 1450104 Container releasable from aircraft; stowing in inflatable life rafts G CROULLEBOIS 22 Nov 1973 [23 Nov 1972] 54361/73 Headings B7W and B7S A recoverable container for the dropping of equipment from an aircraft or ship comprises a rigid body composed of two half shells 1 connected by removable connectors 21, a cover 2 integral with one of the shells to close one of the ends of the body, and a hollow lid 3 engageable in a sealing-tight manner within the other end of the body. The lid 3 is retained on the body be means of couplings 12 having fingers (7), Fig. 3 (not shown), engaging in registered apertures in the shells and lid. One of the shells is provided with a further aperture which is sealed by a plug (5). In the case where the enclosed equipment is a life-saving inflatable raft, the plug is pervious to water which triggers means for inflating the craft. The connectors 21 comprise bolts, or alternatively in the case of a life raft, shear pins, the pins shearing as a result of the inflation of the craft within the container. The hollow lid 3, together with flexible leaves 9 connectable by means of eyelets 20, defines an enclosure for a floating line or dropping equipment and equipment for recovery at sea.
Patent GB-1338905-A (GB)
Title: Amino purine derivatives
IPC: A61K31/52
Filed: 1970-11-16
Abstract: 1338905 Antiviral compositions WELLCOME FOUNDATION Ltd 16 Nov 1970 [17 Nov 1969] 54502/70 Heading A5B [Also in Division C2] Pharmaceutical compositions useful as suppressors of the immune response and as antiviral agents comprise a compound I in which R<SP>1</SP> is amino or 1-4C alkylamino and R<SP>2</SP> is amino, provided that when R<SP>1</SP> is amino, R<SP>2</SP> is amino, and a suitable diluent or carrier. The compositions may be administered orally, rectally, topically or parenterally.
Patent GB-1207050-A (GB)
Title: Cine film movement mechanism
Inventor: JORGENSEN LESTER VERDALL
IPC: G03B1/22
Filed: 1968-11-18
Abstract: 1,207,050. Intermittent feed mechanisms. BELL & HOWELL CO. Nov.18, 1968 [Nov. 24, 1967], No.54602/68. Heading G2E.  Film feed mechanism comprises a shuttle 21 rotatable and slidable on axle 23 in response to in-and-out cam 36 and up-and-down cam 19 to move the film past projection aperture 41, cam 19 rotating on a constant speed shaft 16 driving through gearing 26, 27, 32, 33, the shaft 34 carrying cam 36, the end of shuttle 21 remote from the film claws engaging a collar 49 reciprocable on shaft 34 at variable frequencies to give different framing speeds in response to control means 15. Six cam followers 43A-F are pivotally mounted on a stationery ring 42 co-axial with shaft 34, each with a stud 47 which may engage the single cam recess 37, and each having an end 48 engageable with a flange of collar 49 to  give the reciprocating motion on shaft 34. A control ring 54 is selectively rotatable to bring angularly spaced sets to matches such as 56 into alignments with different numbers of followers 43. Only followers entering a notch may be actuated by cam recess 37. Fast, normal, and slow framing speeds are selected by turning ring 54, the shutter disc 24 alway rotating at the same speed, however, on shaft 16. Reverse feed is made possible by rotating cam 19 through 180 degrees with respect to cam 36. Slide 63 is shifted to cam shaft 16 axially whereby, through worm 26 and worm wheel 27, the cam 36 is turned.
Patent GB-1103369-A (GB)
Title: Improvements in or relating to pile driving
Inventor: GRIMWOOD DONALD JACK
IPC: E02D13/04
Filed: 1966-12-08
Abstract: 1,103,369. Pile driving. EDMUND NUTTALL SONS & CO. (LONDON) Ltd. 8, Dec., 1966, No. 55071/66. Heading E1H. A pile clamp 2 comprises an anchor member 5 to which are pivoted gripping fingers 6, 7 which can be tightened by turnbuckle 10, sliders 3 for engaging with pile leader 4 to guide the gripped pile 1 and means for disengaging the gripping fingers 6, 7 to release the clamp 2 from the pile 1 when driving has reached a predetermined depth. In the embodiment described the release means comprises pivot pin 9 to which is welded an abutment plate 14 which strikes an abutment plate on the pile leader to remove the pivot pin when driving has reached the predetermined depth.
Patent GB-1453914-A (GB)
Title: Ketone of a tricyclic hydrocarbon and the production thereof
IPC: A61Q13/00
Filed: 1974-12-24
Abstract: 1453914 Perfume compositions TAKASAGO PERFUMERY CO Ltd 24 Dec 1974 [1 April 1974] 55828/74 Heading A5B [Also in Division C2] Perfume compositions contain the compound of the formula
Patent GB-1262080-A (GB)
Title: Improvements in or relating to character recognition apparatus
Inventor: SCARROTT GORDON GEORGE
IPC: G06V10/10
Filed: 1968-11-30
Abstract: 1,262,080. Character recognition. INTERNATIONAL COMPUTERS Ltd. 24 Nov., 1969 [30 Nov., 1968], No. 56959/68. Heading G4R. Character recognition apparatus scans across the character with a line of sensing devices 9, and comprises first means 13 responsive to the output of a sensing device 9 to produce horizontal centre line signals, second means 14 for each device 9 responsive to the outputs of this and adjacent sensing devices to produce vertical centre line signals, and gating means 16 for producing centre line signals from which means 17-19 produce signals representing a formalized outline of the sensed character which are fed to character recognition means 21. The circuits from 10 to 19 in the drawing are provided once for each of the row of photo-cells 9. A white level circuit 11 compensates for variations in the illumination and reflectivity of the document 1 on rotating drum 2 being sensed. The horizontal centre line detector 13 samples and holds its input and compares it with the input just prior to the next sample time to produce an output if the difference is less than some value, or a tapped delay line feeding comparators may be used. The vertical centre line detector 14 receives, besides the output relating to its photo-cell 9, also the outputs 23, 24 relating to the four closest photo-cells 9, two on each side, and subtracts the sum of those on one side from the sum of those on the other and detects whether the modulus of the result is exceeded by the modulus of the centre output. The outputs of 13, 14 are ANDed at 16, but inhibited by 15 if the white background is being sensed, the AND 16 feeding a shift register 17 from which ANDs 18 and a decoder 19 replace up to five adjacent pulses by a central pulse. An optional store 20 reconstitutes the character in a line-thinned form to feed recognition device 21.
Patent GB-1262089-A (GB)
Title: Fuel injection systems
Inventor: KNIGHT BASIL EDWARD
IPC: F02M47/02
Filed: 1968-09-06
Abstract: 1,262,089. Regulating I. C. engines. C.A.V. Ltd. Aug.26, 1969 [Sept.6, 1968; Dec.2, 1968], Nos. 42497/68 and 57039/68. Heading F1B. In a fuel injection system for an I. C. engine, high pressure fuel from an accumulator 15, Fig. 1, supplied by a pump 16, is supplied to a conduit 14 when a valve 17, operable in synchronism with the engine, is opened. The high-pressure fuel moves a stepped metering shuttle 26 towards the small end of associated cylinder 27 against accumulator pressure communicated through conduit 18, the stroke of the shuttle being manually adjustable via an adjustment member 30a. The valve 17 is then closed, whereafter a timing valve 19, movable in synchronism with the engine via mechanical or electrical means, e.g. a solenoid, is moved into a position in which it communicates a low-pressure conduit 21 with the chamber above an injector valve 12. Thus the injector valve is opened by the pressure of the fuel in conduit 14 and allows the fuel to flow to an engine combustion chamber via orifices 11. Consequent return of the shuttle 26 communicates ports 28, 30 and relieves the pressure in conduit 14 via restrictor 29 and conduit 21, thereby causing the injector valve 12 to close. The timing valve eventually moves back to the position shown to communicate accumulator pressure with the chamber above the injector valve. The pressure in the conduit 21 is maintained at a fixed proportion of that in conduit 18 by a spill valve 23 associated with a drain port 24. The valve 12 may instead control the flow of fuel to a conduit leading to an injector (33) Fig. 2 (not shown). In Fig. 3 (not shown), the restrictor 29 is replaced by a valve (34) which is closed when the valve (17) is open, and the chamber above the injector valve is connected to a portion of conduit (18) isolated by a restrictor (35), which conduit portion is periodically communicated to an outlet via a solenoid-actuated valve (40) to create a flow in conduit (18) and thereby a lowering of the pressure in the conduit portion to cause the injector valve to open. In another embodiment, Fig. 4 (not shown), the injector valve (46) is held closed via a push rod by a piston (49) subjected to the pressure in conduit (18), but opens when the closing forces exerted on the injector valve are periodically reduced by a solenoid (51) mounted about the push rod.
Patent GB-1410866-A (GB)
Title: Plasma display device
IPC: H01J11/12
Filed: 1973-12-10
Abstract: 1410866 Gas discharge display panels NCR CORP 10 Dec 1973 [26 Dec 1972] 57125/73 Heading H1D A plasma display device includes glass pattern-forming means 20 interposed between first and second wall members 12 and 14 at least one of which is transparent, said pattern-forming means 20 incorporating a cavity pattern defining at least one half-tone image to be displayed, and ionizable gas filling said cavity pattern, said wall members 12 and 14 incorporating electrode means 16 and 18 arranged to produce in operation an observable plasma glow in said gas thereby causing the half-tone image or a selected one of the half-tone images to be displayed by the device. The cavity pattern may be produced by coating the plate 20 with a layer of negative photoresist on which is exposed a half-tone transparency film produced from a film negative in a photographic enlarging process (Fig. 3, not shown) and then etching the coated plate. The cavity pattern may comprise a plurality of individual cavities or a single cavity partially occupied by a plurality of posts (Fig. 5, not shown). The electrodes form a cross-bar addressing system. Electrodes of each array may be commoned together to enable each of a plurality of images, the elements of which are interspersed, to be selected (Figs. 9 and 12, not shown). The gas filling may be a mixture of 99À7% Ne, 0À2% N and 0À1% A at a pressure of 160 torr.
Patent GB-576341-A (GB)
Abstract: 576,341. Measuring fuel - feeds. LINDARS, H., and SMITH, C. H. Jan. 12, 1944, No. 636. [Classes 106 (i) and 106 (iv)] Granular materials, such as fuel, are intermittently fed at constant speed, stopping and starting of the feed-mechanism being automatically effected in accordance with the average rate of feed required, and the feed is measured by an integrating meter 4 having a continuously energized voltage coil and a current coil 15 energized only when the feed mechanism is in operation. The disc 19 of the meter may be geared to operate cyclometertype counters 5 which will record tons and hundredweights. The feed-mechanism comprises an underfeed stoker 2 driven by a variable constant-speed motor 3 with a starter 9 connected through a control relay 16 to an automatic control device 8. The relay is also connected to a transformer 18 feeding the current coil 15 through a fixed resistance 23 and a resistance 22 which may be varied according to the rate of feed. A scale 25 calibrated in tons per hour is provided for this purpose. The means for varying the resistance 22 may be coupled to means for varying the speed of the motor 3.
Patent GB-1207820-A (GB)
Title: Production of tobacco sheet
IPC: A24B15/12
Filed: 1967-12-19
Abstract: 1,207,820. Reconstituted tobacco sheet. PHILIP MORRIS Inc. 19 Dec., 1967 [13 Jan., 1967], No. 57666/67. Heading A2C. [Also in Division D2] In the manufacture of reconstituted tobacco by a papermaking process, white water from the wire and wet press are recycled to pulp preparation, the web is carried through the wet press on an openmesh, non-felt, fabric carrier, e.g. of nylon, this carrier is washed with clarified white water, and these washings and the solids recovered from the clarifying process are also recycled. The product therefore has substantially the same composition as the starting material. The product may be shredded for use as cigarette filler or cut into sheets for cigars.