baber/WOPTO huggingface dataset:
Patent GB-1458358-A (GB)
Title: Method and apparatus for colour inspection
IPC: G01J3/46
Filed: 1973-02-05
Abstract: 1458358 Measuring colour photo-electrically SIRA INSTITUTE Ltd 26 Feb 1974 [5 Feb 1973] 5655/73 Heading G1A A test pattern is inspected by comparing, for a selected area, a signal representing the achromatic radiation from that area with a first reference signal and, with the use of further reference signals representing the desired colour of that area, determining the acceptability of the colour of the test pattern. A signal S i  representing the general achromatic radiation received from a given area "i" of a test pattern is compared with a first reference signal W i  representing achromatic radiation received from a corresponding area of a master pattern, an error signal (S i -W i ) indicating that at least one primary colour component of that area of the test pattern is incorrect, e.g. red, green or blue ink applied in a colour printing process. It is stated that mutually cancelling errors in two or more colour components of a given area are unlikely to occur, and that the probability that such complementary errors would escape detection by the method can be made negligible by inspecting a suitable number of areas, particularly if these are chosen so that different colours predominate in respective areas. The achromatic error signal (S i -W i ), weighted by reference chromaticity co-ordinates r i , g i , b i  derived for a corresponding area of the master pattern, provides signals r i  (S i -W i ), g i  (S i -W i ), b i  (S i -W i ) from which the error in one or more colour components can be derived by computation. Optical apparatus, also described in Specification 1326881, comprises a source 1, Fig. 1, illuminating a strip-like area of an object O bearing a test pattern, a portion of the reflected image being selected by a slit S in a plate 3 for presentation to a photomultiplier tube 8 which thus provides a signal representing the average light, irrespective of colour, reflected from a narrow strip of the test pattern. A radial grating 5, further described in British Specification 970369, is arranged as a chopper to modulate the beam received by the tube 8 for convenience of signal amplification. As the object O is moved perpendicularly to the length of the slit S the tube 8 provides a variable signal which, after analogue processing at 11, 12, 16, Fig. 2, is sampled in digital form to provide signals Si. The master pattern is similarly treated to obtain signals W i  but is additionally scanned with colour filters 9 to give signals representing the chromaticity co-ordinates r i , g i , b i . Each area may be scanned individually achromatically and by colours in turn; or the whole master pattern may be scanned completely four times. Signals derived from the measurements may be passed to a pen recorder 13, or to a data processor 14 controlling the printing process.
Patent GB-894596-A (GB)
Title: Pyrophosphate phosphor
IPC: C09K11/71
Filed: 1959-02-18
Abstract: 894,596. Luminescent materials and processing. SYLVANIA ELECTRIC PRODUCTS Inc. Feb. 18, 1959 [Feb. 21, 1958], No. 5670/59. Drawings to Specification. Class 39 (1). A pyrophosphate phosphor of strontium, or strontium plus one of the metals calcium, barium, magnesium, zinc, cadmium and aluminium, activated by tin, a substantial part of which is in the stannous state, contains between 1.99 and 2À02 (preferably 2.00) gram atoms of total metal including the tin for each gram-mol. of phosphate radical present in the phosphor. A minimum of greying due to carbon left by an organic binder used in the coating process is stated to occur when the ratio is exactly stoichiometric. Specific examples are given of phosphors containing in addition to quantities of (NH 4 ) 2 HPO 4 , NH 4 Cl and SnO (a) SrHPO 4  plus CaHPO 4 , (b) Sr 2 P 2 O 7  (c) SrHPO 4  plus BaHPO 4 , or ZnP 2 O 7  or Mg 2 P 2 O 7 . The phosphor is prepared by ball-milling the constituents dry in water or alcohol and baking out the mixture at temperatures varying from 2150‹C. to 1700‹C. The phosphor may be coated on the inner wall of an argon filled low pressure mercury vapour discharge lamp. Detailed data is given of light ouptut and take-out characteristics of phosphors of different metal to phosphate radical ratios, all in the region of 2.00 to 1. Specification 894,595 is referred to.
Patent GB-962943-A (GB)
Title: Improvements in or relating to the preparation of penicillins
Inventor: TESTA EMILIO
IPC: C07D499/00
Filed: 1962-02-14
Abstract: Penicillins of the general formula: <FORM:0962943/C1/1> wherein X represents an alkylene group may be prepared by reacting 6-aminopenicillamic acid with a mixed anhydride obtained from the appropriate a -phenyl-o -carbobenzoxy-aminoacid and an ester of chlorocarbonic acid, in the presence of a tertiary amine and splitting off the carbobenzoxy group by catalytic hydrogenation. Examples describe the production of (-)-b -amino-a -phenylethyl-, a -phenyl-g -aminopropyl- and a -phenyl-d -aminobutyl-penicillins. Specification 960,896 is referred to.
Patent GB-621938-A (GB)
Title: Improvements in or relating to parallel vices
IPC: B25B1/22
Filed: 1947-02-27
Abstract: 621,938. Vices. BAHUAUD, A. A. Feb. 27, 1947, Nos. 5716 and 5717. Convention dates, Dec. 12, 1945, and July 24, 1946. [Class 61(ii) A slidable jaw vice adjustable for height, has the body 1 provided with a vertical rod 4 screw threaded to engage a tapped hole 5 in the vice support so that by rotating the vice it is raised or lowered, being then secured by a clamp screw 7 on a lever 8 pressing against a springy part 5a of the hole 5 formed by an arcuate slot 5b. In a modification, Fig. 3, a helical groove 21 on the vertical rod is engaged by a key 22 on the vice support and the rod is secured in the split clamps 23 by a clamp screw on the lever 26.
Patent GB-702812-A (GB)
Title: Improvements in the production of gases containing sulphur dioxide
IPC: C01B17/52
Filed: 1952-03-05
Abstract: In the production of sulphur dioxide-containing gases by roasting comminuted combustible sulphur minerals with oxygen-containing gases in a layer of substantially roasted material kept in turbulent motion by the said gases, sulphur minerals having a grain size which is too coarse for the formation of turbulent motion by the use of gas alone are fed into the turbulent layer, and, for the purpose of facilitating the turbulent motion, additional substances which do not soften at the roasting temperature and which have a finer average grain size than the average grain size of the sulphur minerals are simultaneously introduced into the turbulent layer as a separate stream.  The additional substances preferably have a grain size of less than about 3 mm. and may be fine grained roasted ore produced in the turbulent layer, or other substances such as sulphates of iron, magnesium or calcium, or fine grained flotation pyrites or gas purification residues.  The return of the fine-grained roasted ore may be effected by arranging above the turbulent layer a quiescent zone, the height of which is at least 4 times that of the turbulent layer and the cross section of which preferably widens upwardly. Alternatively flue dust which has been entrained by the reaction gases and deposited in dust chambers, cyclones or the like may be employed, being returned to the turbulent layer by free fall or conveyer devices.  Specification 688,983 is referred to.
Patent GB-127335-A (GB)
Title: Improvements in and relating to Wireless Signalling Systems.
IPC: H01Q1/52
Filed: 1917-04-24
Abstract: 127,335. British Thomson - Houston Co., (General Electric Co.). April 24, 1917. Duplex wireless signalling.-In a duplex system of wireless signalling, separate transmitting and receiving aerials are employed at each station, and the effect of the emitted waves on the adjacent receiving-aerial is neutralized by impressing opposite potential variations on the receiving-aerial by coupling it electric-statically or electro-magnetically to the transmitting-aerial. In the form shown in Fig. 1, the transmitting-aerial 1 and the receiving-aerial 4 are. mounted on the same or adjacent posts 2, 3, 5 and are coupled to the sending-circuit 7 and receiving-circuit 12 respectively. An earth connexion is made from the aerial 1 through an inductance 23 which is coupled to an inductance 24 connected in series with a tuning-condenser 26 between the aerial 4 and earth. The coils 23, 24 are so related that the potential variations induced thereby in the aerial 4 are opposite in phase and of equal amplitude to those resulting from the waves emitted by the aerial 1. Different frequencies may be used for transmitting and receiving, and an oscillatory circuit 27 tuned to the transmitting frequency may be placed in the receiving-aerial, this circuit offering a high impedence to currents of that frequency. In the modification shown in Fig. 2, an electro-static coupling is used between the aerials. The transmitting-aerial 1 is connected by a variable capacity 36, with or without a series fixed capacity 35, to a point 34 on the inductance 11 of the receiving-aerial 4. This point 34 is also connected to earth through a condenser 30, and its potential, during transmission, therefore bears a certain ratio to that of the aerial 1, the ratio being dependent on the adjustment of the capacity 36. The potential induced in the aerial 4 by the transmitted waves also bears a certain ratio to that of the aerial 1, owing to the capacity existing between the two aerials, and the capacity of the aerial 4 to earth. If the capacity 36 is properly adjusted, the two points 33, 34 on the inductance 11 remain at the same potential so far as the effect of the transmitting-aerial is concerned, and therefore the receiving-circuits are unaffected. The secondary ccils 37, 38 are earthed at their middle points and are connected in parallel to the grid circuit of a vacuum-tube detector 13, the coils 37, 38 being arranged so as to neutralize electro-static effects between them and the coil 11.
Patent GB-268932-A (GB)
Title: Improvements in or relating to signs
IPC: G09F13/06
Filed: 1926-03-01
Abstract: 268,932. Cooper, W. J. F. March 1, 1926. Illumination, changing advertisements by controlling. - A sign comprises a casing &c. fitted with a transparent or translucent screen bearing signs illuminated by an electric lamp 8 of high resistance and low current consumption. The lamp R is connected in series with a main lamp 11 of comparatively low resistance, which illuminates the sign when the lamp 8 is shunted by a switch 12. On opening the switch 12 to put both lamps in series, the lamp 8 only is illuminated. When the main lamp 11 is located in such a position as not to throw light on the sign, a second lamp of low resistance in series with the lamp 11 is placed in the sign casing.
Patent GB-340502-A (GB)
Title: Improvements in and relating to headlamps for self-propelled vehicles
IPC: F21V11/00
Filed: 1929-08-23
Abstract: 340,502. Vehicle &c. lamps. SHEPPARD, S. R., The Limes, Ladbroke Road, Redhill, Surrey. Aug. 23, 1929, No. 5750/30. Divided on 325,805, [Class 75 (iv), Lamps &c., Kinds &c. of]. [Class 75 (iv).] Lantern screens. - To prevent dazzle a concave point-focussing opaque reflector 6 is disposed on the longitudinal axis of the lamp intermediate the source of light 4 and the lamp front and so positioned that its focus is coincident with that of the main reflector 1, the dimensions of the reflectors being such that light ravs reflected to and fro between the reflectors recede from the axis and are emitted through the annular space between the reflectors. The focal length of the reflector 6 is greater than that of the main reflector and its diameter is such as to screen the direct rays. As shown the reflector 6 is carried by resilient arms 7 mounted on a sleeve 8 held in position by the pins 5 of the lamp. In a modification the reflector is supported by a screwed rod passing through the lamp front and secured by nuts.
Patent GB-1069660-A (GB)
Title: Improvements in jamming cleats and blocks
Inventor: WICKHAM JOHN
IPC: B66D3/10
Filed: 1966-02-10
Abstract: 1,069,660. Kicking straps. WIGGIN CHAINS Ltd. Feb. 10, 1966, No. 5796/66. Heading B7V. [Also in Division E2] A jamming cleat or jamming block device used in the rigging of sailing boats, e.g. as part of a kicking strap, comprises a supporting member carrying first and second fixedly located stops 23, 17 and a pivotally mounted two-armed lever 20 so arranged that one arm 22 of the lever can co-operate with the first stop 23 to grip a rope therebetween, the second stop 17 being spaced from the other arm of the lewer and located so that a rope gripped between the lever and the first stop passed between said other arm 27 and the second stop and tensioned, will by its engagement with said other arm, urge the lever to pivot in one sense to increase the grip on the rope between the one arm of the lever and the first arm pivoting of the lever in the other sense serving to release said grip. In the construction shown, the supporting member consists of two plates 13 connected together by a shackle pin 16, the stop 23 and axles 12, 18 and 21, the stop 23 being in the form of a pin. The axles 12 and 18 mount pulleys 11 and 17, the-pulley 17 constituting the first atop. The lever 20 is mounted on the axle 21. In use the shackle pin 16 is connected by a wire tie to a mast and the rope after passing between the lever and the stop pin 23 passes round the pulley 17, around the pulley of a pulley block (not shown) back to the pulley 12, after which it is connected to a shackle on the pulley block. The lever is provided with teeth 25 to increase its grip on the rope.
Patent GB-1299515-A (GB)
Title: Improvements in or relating to refrigerator cabinets
Inventor: KITSON JOSHUA WILLIAM
IPC: F25D23/06
Filed: 1969-07-23
Abstract: 1299515 Refrigerator casings PHILIPS GLOEILAMPENFABRIEKEN NV 21 Jan 1970 [23 July 1969 3 Sept 1969] 5818/70 and 5819/70 Divided out of 36913/69 and 43861/69 Heading F4H A refrigerator cabinet comprises a plastics foam insulating body 44 formed in situ between an inner lining 41 and outer container 42, the edges of which are pressed against ribs 56 on a breaker strip 15 by a resilient spacer located between the layers. The spacer comprises a strip of apertured, rigid material which is sprung into U-shape along its length.
Patent GB-255764-A (GB)
Title: Improvements in connection with ozonising apparatus
IPC: C01B13/11
Filed: 1925-12-10
Abstract: 255,764. Quain, J. R. Dec. 10, 1925. Gases, treating electrically.-A self contained ozonizing apparatus, adapted to be plugged into and suspended from a socket, comprises a silica or other dielectric a<3> with electrodes a<1>, a<2>, a highfrequency high-tension coil E, placed inside the inner electrode a', a trembler coil B, and a condenser D surrounding the trembler coil, the whole assemblage being carried in a frame F formed with a net provided with means for coupling to a bayonet joint or similar connection. The frame is preferably made in two parts connected together as shown, and is provided with perforations f<2> for the diffusion of the ozone.
Patent GB-523765-A (GB)
Title: Improvements in rotating cylinder internal-combustion engines
IPC: F01B13/06
Filed: 1939-02-22
Abstract: 523,765. Revolving cylinder engines. KULKKI, A. K., and KULKKI, R. K. Feb. 22,1939, No. 5934. [Class 7 (ii)] In an engine having revolving cylinders, the pistons carry rollers 7 that bear against a closed cam track 8, and are held to the track by clamps 6 which engage it at both sides.
Patent GB-680033-A (GB)
Title: Improvements in or relating to drag or the like link-end assembly and method of making same
IPC: B62D7/16
Filed: 1950-03-09
Abstract: 680,033. Jointing by forging. THOMPSON PRODUCTS, Inc. March 9, 1950 [Aug. 27, 1949], No. 5948/50. Class 83 (iv). [Also in Group XXV] A rod 33 of relatively small diameter is secured to a considerably larger tubular, balljoint housing 11 by inserting a bush 17 into the housing, inserting the end of the rod within the bush, and deforining corresponding portions of the housing and bush to lock the latter together. As shown, the bush is screwed into the housing and the rod is screwed into the bush. The outer surface of the housing is then punched inwardly to cause damage of the screw-threads as at 36 and 37. In a modification the end of the bush protrudes from the housing and is split to clamp upon the rod.
Patent GB-958349-A (GB)
Title: Improvements in holders for electric devices such as lamps
Inventor: COATON JAMES RICHARD
IPC: H01R33/09
Filed: 1963-02-14
Abstract: 958,349. Lamp holders. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 14, 1963, No. 6120/63. Heading H2E. A holder for capless lamps having flattened pinches around which lead in wires are bent to form contacts, comprises a resilient insulating body 1 with an inner rectangular recess 5 for accommodating the lamp pinch opening from a circular mouth with a thin wall 7 for gripping the lamp body, and a pair of spaced plate contacts 4 which pass through elongated openings 9 in the base 8 of body 1 to lie against the longer side walls of recess 5. The contacts 4 have projections 14, 16 which co-operate with grooves in the lamp pinch to locate the latter in recess 5, and are bent to form terminal loops 11 in which conductors 12 may be soldered or crimped. The loop ends of plates 4 are accommodated in grooves 10 in base 8 and held there by an insulating cover (Fig. 2, not shown) placed over the base 8 and secured by an adhesive, or clips, or co-operating threaded portions. Specification 958,350 is referred to.
Patent GB-525629-A (GB)
Title: Improvements in or relating to television systems
IPC: H04N5/52
Filed: 1939-02-24
Abstract: 525,629. Automatic volume control; television. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Feb. 24, 1939, No. 6124. Convention date, Feb. 25, 1938. [Classes 40 (iii) and 40 (v)] Gain control in a television receiver is effected by first bringing the average picture brightness to a substantially constant value and then bringing a datum level to a substantially constant value. The Figure shows the picture amplifier divided into sections V1, V2 and having initial gain controlling means R1 effective upon the first stage to render the average value of the picture signals substantially constant. Further gain control means R2 is responsive to departure from the average value of the amplitude level, representing a fixed datum level, and is effective upon the amplifier V2 and synchronized from the deflecting waveform generator A. In a modification, Fig. 3 (not shown) the output of the section V1 is amplified in the section V2 before application to the generator A. Instead of dividing the picture signal amplifier into sections a single amplifier may be used with gain controlling means to render the average value of the picture signal constant and a further gain control means responsive to departures from the average level effective on the first gain control means, Fig. 5 (not shown). The Specification discusses the time constant of the control networks and the arrangements necessary to avoid overloading. Specifications 458,585 and 489,275 are referred to.
Patent GB-772734-A (GB)
Title: A process for the manufacture of water-soluble polymers containing neutralised carboxyl groups
IPC: C08F8/00
Filed: 1954-03-04
Abstract: Water - soluble polymers containing neutralized carboxyl groups are prepared by converting a monomeric starting material containing at least 10 per cent of a monomeric nitrile which contains the CH2=C< group into a vinyl polymer in known manner and heating the resulting polymer in the presence of a quantity of alkali at least stoichiometrically sufficient to saponify the quantity of nitrile groups which corresponds to the minimum percentage of nitrile and of a quantity of water equal to between 1 and 2 molecular equivalents per equivalent of alkali. Polymers specified are those of acrylonitrile and methacrylonitrile.  The reaction may be performed in the presence of an organic solvent, e.g. methanol, dioxane or acetone, which is capable of dissolving water and alkali but not the polymer containing neutralized carboxyl groups.
Patent GB-876930-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28F13/02
Filed: 1959-02-24
Abstract: 876,930. Heat exchangers. FORTIER, A. Feb. 24, 1959 [Feb. 25, 1958], No. 6309/59. Class 64(3) In a method of exchanging heat between a heat conducting wall and a liquid, a number of fine jets of the liquid are directed against the wall in a direction substantially normal thereto, the jet velocity, diameter and distance through which they travel before they reach the wall being so selected having regard to the viscosity of the liquid, that they reach the wall as continuous streams and on impinging on the wall are deflected thereby to form continuous liquid films spreading in laminar flow from the point of contact and cling- ing to the wall, the spacing of the jets being so selected having regard to the temperature of the wall and the viscosity of the liquid, that the films of liquid spreading from adjacent points of contact meet and cause substantially the whole surface of the wall to be covered with the said films. In one application shown of the method, a number of small tubes 6 are fed with cooling water from a chamber 7 from which the tubes extend vertically towards a wall 5 to be cooled. The tubes are disposed in plan at the apices of a network of equilateral triangles (Fig. 5). The chamber 7 is provided with a pressure water inlet 9 and the water is exhausted through an cutlet 11 preferably at a velocity low enough to cause no substantial disturbance of the jets. In a further apparatus described horizontal jets are directed against a substantially cylindrical wall extending vertically.
Patent GB-371102-A (GB)
Title: Process of improving nickel-molybdenum alloys
IPC: C22C19/03
Filed: 1931-02-28
Abstract: Nickel-molybdenum alloys containing from 8 to 30 per cent of molybdenum are improved by rapidly cooling from above 900 DEG  C. and then annealing at 400-800 DEG  C.  The Specification as open to inspection under Sect. 91 (3) (a) states that the alloys may contain, in addition, up to 40 per cent of one or more elements such as copper, aluminium, cobalt, chromium, iron, and manganese.  This subject-matter does not appear in the Specification as accepted.