baber/WOPTO huggingface dataset:
Patent GB-999749-A (GB)
Title: Apparatus for grading articles by weight
IPC: B07C5/24
Filed: 1963-10-11
Abstract: 999, 749. Separating and sorting by weight. A. LAUGHLIN. Oct. 11, 1963, [Oct. 11, 1962], No. 40267/63. Heading G1W. An apparatus for grading articles e.g. eggs, according to weight comprises a dished disc member 10 (Fig. 1, 2) rotatable about an inclined shaft 11 fixed in a frame 13, a plurality of article carriers in the form of rocker arms 17 each pivotally mounted at 20 on the rim of the disc 10 and having cups 18, means including a star wheel 40 for feeding articles one at a time into the cup of the particular carrier which is at the uppermost position on the disc. Thereby to cause the disc to rotate by virtue of the gravitational force acting on the loaded carrier. The apparatus also includes a weigher, fixed to the frame, comprising a beam 28 (Fig. 2) pivoted at 27, with a spring resistant 29 and damper 33 and which is acted upon by a free end 19 of a loaded carrier, and a selector 60 which detects and maintains the degree of tilt of the carrier during further rotation and releases the carrier at a discharge position appropriate to the weight grade of the article. The eggs are fed down a gradient 14 and a cam 44 on the disc rim prevents rotation of the star wheel by an egg until the cup is in position to receive it, there being one cam per carrier. A spring biased toggle 47 engages successively notches 49 on the disc rim to hold the disc during loading of a cup. The loaded cup then depresses the toggle to release the disc which rotates. After loading and before weighting the carrier rocker arm 17 is prevented from tilting further by a quadrant shaped guide plate 56 which guides the free end 19 of the arm under a horizontal arm 57 of the weigher beam 28. The arrangement is that the weighing occurs when a notch is engaged by the toggle holding the disc stationary. The loaded rocker arm tilts and takes up a certain balance position according to the weight carried. The level of the free end 19 will coincide with one or other space between arcuate galleries 61a to 61e (one gallery for each grade) of the selector 60, so that after weighing, on further rotation of the disc 10 the loaded rocker arm rides on the gallery selected in effect by the spring balance. Each gallery is of a different arcuate length and as the rocker arm is free to tilt when it reaches a terminus (62a to 62e) of the gallery so as to discharge an egg therefrom, the length of a gallery determines into which compartment 16a to 16e the egg is deposited. In an alternative embodiment (Figs. 7 to 15 not shown) the eggs are weighed and the grade selected before transfer to a carrier also the star wheel is driven through gears from the disc shaft. The spring balance may include a flat spiral spring instead of a coiled tension spring. The shaft 11 may be rotated by a motor instead of gravitationally.
Patent GB-873765-A (GB)
Title: Process for the production of basic refractory bricks or shapes
IPC: C04B35/01
Filed: 1958-12-15
Abstract: A process for producing a basic refractory brick or shape, which may contain magnesia and one or more of the spinels, such as chrome-, alumina- and iron-spinel, comprises heating together (e.g. in a rotary or brick-making kiln) the normal constituents of a basic refractory, in normal gradings and proportions, to a temperature of 1300 DEG C. or more, for a time such as is used in normal refractory brick manufacture, then crushing and grading the fired product from which a brick or shape is moulded and re-fired in the normal way. E.g. for producing a "chrome-magnesite" brick, crushed and screened chrome ore, with particles from 0,5 m.m. to 4m.m., is blended with magnesia "flour," which is finer than 0,25 m.m., using 2 to 10% by weight water and 2% by weight sulphite lye bond.  The proportions used may comprise between 20% and 80% by weight of chrome ore and between 80% and 20% by weight of "magnesite."  The above mixture is pressed into bricks and fired at 1300 DEG C. or more.  Following the firing, the bricks are crushed and graded to a particle size not greater than 4 m.m., with 30% by weight of the composition less than 0,25 m.m. in particle size.  After pressing into bricks or shapes, the magnesia (MgO) and spinel (MgO. Cr2O3) composition is re-fired at 1500 DEG C. or more.
Patent GB-1437619-A (GB)
Title: Zoom lens system with extremely long focal length range
IPC: G02B7/08
Filed: 1973-08-29
Abstract: 1437619 Zoom lenses JOS SCHNEIDER & CO OPTISCHE WERKE 29 Aug 1973 [6 Dec 1972] 40628/73 Heading G2J A zoom lens operating mechanism comprises two variable sections 1, 2, in each of which are arranged two axially displaceable lens components 11, 12; 13, 14 which are axially and mutually displaceable along cam or guide tracks 3, 4; 5, 6, mounted in the variable sections, the rotation of the variable sections being effected by a central drive 18 via a transmission 19, 20, 21. In the arrangement shown, additional control of the relative aperture is effected by gear-wheel 28 on shaft 21 which rotates the diaphragm housing 17 via a further gear 29. In another arrangement, Fig. 2 (not shown) a differential gear is placed between the drive gear and the toothed rims 22, 23 of the sections 1, 2.
Patent GB-1081682-A (GB)
Title: Photoelectric measuring apparatus
Inventor: NEBE WOLFGANG
IPC: G01N21/41
Filed: 1964-10-08
Abstract: 1,081,682. Photo-electric measuring apparatus. CARL ZEISS JENA VEB. Oct. 8, 1964, No.41078/64. Heading G1A. Apparatus for detecting deflections of a light beam comprises a light entrance aperture, means for forming an image of the aperture on a diaphragm and means for oscillating the image relatively to the aperture; the breadth of the effective part of the diaphragm being approximately equal to the sum of the breadth of the light-entrance aperture and twice the oscillation amplitude of the image. In a refractometer, an image of an illuminated slit 4, Fig. 1, is formed on a diaphragm 7 by light which passes through a prismatic cuvette 3. The image is oscillated relative to the diaphragm by a wedge 9 rotated by a motor 14. The width of the aperture in diaphragm 7 is equal to the width of slit 4 plus twice the amplitude of oscillation so that so long as the oscillation is symmetrical about the centre line of aperture 7 there is no alternating component in the output of a photo-cell 11. A change in the refractive index of the sample in the cuvette causes a displacement of the image and a corresponding alternating component in the cell output. The output is applied to a servomotor 15 to move a mirror 18 to bring the image back to the centre of diaphragm 7 and the position of the mirror which represents the refractive index to be measured is indicated on a scale 20. More complicated apertures which may replace the slit 4 and the diaphragm are disclosed, Fig. 4 (not shown). The apparatus may be used to detect interfaces between fluids and may be modified to investigate solid material by transmission or reflection. Null balance may be effected by displacing all the path elements from the wedge 9 to the photo-cell 11, instead of moving the mirror 18.
Patent GB-1392684-A (GB)
Title: Method of and apparatus for manufacturing a colour display cathode-ray tube
IPC: H01J9/227
Filed: 1973-09-03
Abstract: 1392684 Colour cathode-ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 3 Sept 1973 [6 Sept 1972] 41370/73 Heading H1D In a method of manufacturing a colour cathode-ray tube a photosensitive layer 3 on a faceplate 2 is exposed to a scanning light beam 6 through the apertures 5 in a shadow mask 4 and the position of the effective source of the scanning light beam 6 is physically moved during the exposure, the movement being dependent on the area of the screen being exposed at the time. The beam 6 can be produced by the reflection of a primary light beam 7 at a mirror 8 which can be rotated about axis 9 and tilted about axis 10 which is perpendicular to a plane containing axis 9 and beam 6. A detailed sectional view of the optical and mechanical arrangement of device 11 is given in Fig. 2 (not shown). Light from a lamp (23) is condensed by a lens (25) and is successively reflected by mirrors (20, 17, 15) from which the primary beam 7 emerges. To permit movement of the effective source of the scanning beam, mirror (20) is rotatable about axis (21) and mirrors (17, 15) are independently rotatable about axis (18), mirror (17) being linked to mirror (20) by a telescopic conector (22). The entire support for mirrors 8 (15, 17) can be moved in perpendicular directions by slides (26, 27). Specification 1,257,933 is referred to.
Patent GB-1143729-A (GB)
Title: Apparatus for pressure sealing covers on to thermoplastics containers
IPC: B65B7/28
Filed: 1967-09-12
Abstract: 1,143,729. Seaming non-metallic sheet material. BELLAPLAST HELLER & CO. 12 Sept., 1967 [15 Sept., 1966], No. 41620/67. Heading B5K. [Also in Division B8] A cover 2 is pressure sealed to the rim flange of a thermoplastics container by means of a tool 4 while the flange is supported on an abutment 14 formed on segmental members 15. A container-receiving member 13 is bored to guide pins 17 on which ride springs 18, whereby the members 15 are biased upwards. The springs may be adjusted to yield to the fully retracted position under pressure from the tool 4, or under the weight of the container. The inner surface of the members 15 corresponds to the shape of the adjacent part of the container wall, and the members 15 may be exchanged with others for use with different forms of container. The pins 17 are adjustable.
Patent GB-1466471-A (GB)
Title: Optical digistising system
IPC: G01S17/89
Filed: 1974-09-25
Abstract: 1466471 Position finding CETEC SYSTEMS Ltd 25 Sept 1974 41620/74 Heading H4D The co-ordinates of a cursor movable on a platen are found by two radiation scanning devices which measure the time taken for a scanning beam to sweep from a fixed mirror to a mirror associated with the cursor; the times measured by the two devices represent the angular position of the cursor relative to the devices, and its co-ordinates are found from these angles by triangulation. In Fig. 1 visible, U.V., I.R. or microwave radiation from sources 17, 17A is directed to a cursor 10 by rotating mirrors 19, 19A. The cursor is a transparent body having a graticule 11, and is movable over platen 15; the body carries a reflective groove, or is externally reflective, or it can be a part sphere whose outer surface is 30% reflective and whose bulk is of refractive index 2. Detectors 20, 21 receive radiation from mirror 19 in device 16; as mirror 19 rotates, first detector 21 receives radiation, then detector 20 receives three beams in sequence, which are respectively the radiation from source 17 via, mirror 19, then via the cursor and mirror 19, then via fixed detector mirror 18 and mirror 19. These signals, and the similar signals from device 16A are processed at 115 for display at 116. Fig. 6 shows the processing circuit for device 16. When detector 21 receives radiation at the start of a measurement cycle, control unit 33 clears counters 36, 37. When detector 20 receives its first radiation the control unit opens both gates 34, 35 so that both counters receive clock pulses. Gate 34 is closed when detector 20 receives its second radiation input, and gate 35 closes when the detector receives its third input. The count at 36 thus represents the angle between source 17, mirror 19 and the cursor, while the count at 37 represents the angle between the source, mirror 19 and mirror 18. Since that latter angle is a known constant, the ratio of the two counts gives the angular position of the cursor assuming the mirror 19 rotates at a constant speed. The two counts are combined at 115 in Fig. 1, as are the similar ones from 16A, and the rectangular co-ordinates are found by standard triangulation. The unit 115 also receives signals from the control unit 33 of Fig. 6 to indicate the end of each measurement cycle and to sound an alarm if detector 20 receives more than three inputs per cycle, as it would if an extraneous reflective body were present.
Patent GB-1167624-A (GB)
Title: Ethyl Auramine Recovery Process
Inventor: GROSKLOS RILL LEWIS
IPC: C09B11/02
Filed: 1967-09-12
Abstract: 1,167,624. Recovery of ethyl auramine. AMERICAN CYANAMID CO. 12 Sept., 1967 [16 Nov., 1966], No. 41677/67. Heading C4P. Ethyl auramine, formed by reacting 4,4<SP>1</SP>-(N, N<SP>1</SP> - tetra - ethyl)diaminodiphenylmethane with sulphur and a source of ammonia in the presence of urea, is recovered by the steps (1) drowning the molten reaction mixture with water; (2) filtering the drowning mixture; (3) extracting the resulting filter cake with hot water; (4) recovering ethyl auramine from the extract of (3) by salting out and filtration; (5) treating the resulting filter cake from (3) with an aqueous alkaline solution having a pH of at least 10; (6) extracting the filter cake with an aqueous acid solution, e.g. aqueous acetic acid; and (7) isolating ethyl auramine from the acid extract by salting out and filtration. In modifications of the process (a) steps (3) and (4) are eliminated; (b) steps (3), (4) and (5) are eliminated by using an aq. alkaline solution of pH of at least 10 in step (1); and (c) step (4) is eliminated by combining the extract from steps (3) and (6).
Patent GB-1190759-A (GB)
Title: Automatic Gauge Control for Rolling Mills
Inventor: ELLIS ROBERT HUNTER
IPC: B21B37/64
Filed: 1966-09-19
Abstract: 1,190,759. Rolling. UNITED ENG. & FOUNDRY CO. 18 Sept., 1967 [19 Sept., 1966], No. 41779/66. Heading B3M. [Also in Division G3] In a rolling mill, the thickness of rolled material and the difference between an hydraulically applied roll pre-stressing force and the roll separating force due to the load are both compared with desired values and any errors utilized to control the roll gap automatically. As shown, each stand of a two-stand rolling mill comprises a housing 10 for back-up chocks 12, 13 supporting back-up rolls 14, 15 engaging work rolls 18, 19. An hydraulic ram 29 applies a prestressing force between the housing 10 and lower back-up chock 13 and the difference between this force and that due to the work separating rolls 18, 19 is measured by a load cell 23 associated with a strut 22 between the upper portion of chock 13 and the upper portion of housing 10. The difference is maintained constant despite variations of load during rolling by comparing the output of cell 23 with a signal from a potentiometer 33, representing a desired difference, so that any error is effective through an amplifier 32 to adjust the pressure applied to ram 29 from a motor-driven pump 35. This tends to maintain a constant rolled thickness but greater accuracy in this respect is obtained by automatically controlling a screw-down motor 28 by the output of an amplifier 44 which represents thickness error computed from signals dependent on (a) rolling load obtained by adding, in an amplifier 38, signals from load cell 28 to signals from a load cell 41 associated with ram 29 or the pressure applied to it, (b) screw-down setting obtained from a potentiometer 46 adjusted by a motor 28, (c) mill characteristics obtained by pre-setting a potentiometer 43, (d) desired thickness obtained by pre-setting a potentiometer 45. The rolling load may alternatively be measured for this purpose by a load cell associated with the screw-down.
Patent GB-1337141-A (GB)
Title: Quick drying synthetic resin coating compositions
IPC: C08L67/02
Filed: 1970-09-02
Abstract: 1337141 Coating compositions NIPPON PAINT CO Ltd 2 Sept 1970 [8 Sept 1969] 41929/70 Addition to 1337142 Headings C3P C3R and C3F Quick-drying synthetic resin coating compositions comprise an organic solvent and a resin composition consisting of (A) 100 parts by weight of a copolymer of (1) 5-70% by weight of at least one monomer of the formula where R stands for a monovalent tertiary aliphatic hydrocarbon group having 4-26 carbon atoms, R<SP>1</SP> stands for a monovalent α,#-ethylenically unsaturated hydrocarbon group having 2 or 3 carbon atoms which may be substituted with one group of the formula COOR<SP>2</SP> where R<SP>2</SP> is H or C 1 -C 4  alkyl, and (2) 30-95% by weight of at least one copolymerizable monomer; and (B) 5-600 parts by weight of an alkyd resin containing 1-70% by weight of units derived from a tertiary aliphatic carboxylic acid of the formula RCOOH where R is as defined above. (The invention of divisional Application No. 10863/73 (Serial No. 1,337,142) is disclaimed.) Component (1) of the copolymer is the reaction product of an α,#-ethylenically unsaturated carboxylic acid, and a glycidyl ester of an acid RCOOH; or the reaction product of a glycidyl ester of said unsaturated acid, and an acid RCOOH; the unsaturated acid may be, for example, acrylic, methacrylic, crotonic, itaconic, maleic or fumaric acid or a mono-alkyl ester of a mentioned dicarboxylic acid. Comonomers (2) include (meth)acrylate esters, vinyl esters, olefins (including diolefins), styrene and derivatives, (meth)acrylamide and derivatives, (meth)acrylonitrile, and polymerizable monomers having a non-drying oil fatty acid residue. The alkyd resin (B) is suitably prepared by reacting the acid RCOOH or glycidyl ester thereof with a polybasic acid having 3-30 carbon atoms (or an anhydride thereof), a polyhydric alcohol having 2-30 carbon atoms and, optionally, a vegetable oil or a fatty acid. Particularly useful solvents are ethyl acetate, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone, toluene, xylene, ethylene glycol, monoethyl ether acetate, and butanol. The compositions may also include other components such as plasticizers, pigments, cellulosic derivatives (e.g. nitrocellulose or cellulose acetate butyrate), aminoplasts and metal salt dryers. In examples the compositions are applied to steel panels; other substrates mentioned are metals, wood, rubber, glass, fibres and plastics mouldings. Reference has been directed by the Comptroller to Specification 1,009,217.
Patent GB-1395329-A (GB)
Title: Photographic process for the production of colloid relief patterns
IPC: H05K3/00
Filed: 1971-09-08
Abstract: 1395329 Producing colloid relief images using N-vinyl carbazole and carbon tetrabromide AGFAGEVAERT 16 Aug 1972 [8 Sept 1971]  41941/71 Heading G2C A colloid relief image is produced using a photographic material comprising a layer of an intimate mixture of N-vinyl carbazole and carbon tetrabromide dispersed as discrete particles in a watersoluble, film-forming hydrophilic colloid having active hydrogen atoms, the relief image (A) when having reversed image values with respect to an original being produced by a negative working mode comprising imagewise exposing the material to ultraviolet, visible and/or infrared radiation of an amount not sufficient to form a print-out image, overall exposing to ultraviolet or visible and/or infrared radiation in a larger amount than the initial exposure to form a visible image corresponding to the initially unexposed areas, overall heating to intensify the colour in the initially unexposed areas and to decrease the water permeability and washoff removability in the initially exposed areas and washing off the initially unexposed areas with an aqueous liquid and (B) when having the same image values as an original being produced by a positive working mode comprising imagewise exposing the material to ultraviolet, visible and/or infrared radiation to produce a visible print-out colour image, overall heating to intensify the printout colour image arid to reduce the water permeability and wash-off removability of the initially unexposed areas, overall exposing to ultraviolet radiation to colour the initially unexposed areas and washing off the initially exposed areas with an aqueous liquid. In procedure (A) the material may be overall exposed to ultraviolet radiation to colour the initially exposed areas immediately before the wash-off step. Alternatively, the material may contain a dye or coloured pigment in the photosensitive layer. The photo-sensitive layer may be spectrally sensitized with a dye base such as a styryl or azastyryl dye base e.g. 2- or 4- (pdimethylaminostyryl) quinoline. Specification 1065548 is referred to.
Patent GB-1094075-A (GB)
Title: A method for producing a fine-grained product by means of freeze-drying, an apparatus for applying the method and a product produced by employing the method
IPC: F26B5/06
Filed: 1965-10-04
Abstract: 1,094,075. Freeze-drying. ATLAS A.S. Oct. 4, 1965 [Oct. 2, 1964], No. 42061/65. Heading F4G. In apparatus for producing a fine-grained material by freeze-drying, the material in frozen and granular form is introduced through an air lock 2 into an evacuated chamber 4 housing a rotating insert 5 comprising a scraper in the form of lifting buckets 6 and bumper members 7 formed from ribbed heating pipes so that the granules strike and rub against each other and the parts of the apparatus to remove succesively the dry layer successively formed on the pieces. The fine-grained dry pieces are thereafter removed through a vapour outlet conduit 8 connected to a vacuum source of sufficient size to the chamber while the non-dried pieces remain. A cyclone separator 9 is connected to the conduit. In a further arrangement attenuate bumper members may not be heated so that the material alternately hits an unheated and a heated member. The drying may also be carried out in two steps wherein the second step takes place at a higher pressure than in the first step.
Patent GB-988587-A (GB)
Title: A bottle made of a plastics material
IPC: B65D23/10
Filed: 1961-11-27
Abstract: 988,587. Plastics bottles. P. NATAF. Nov. 27, 1961 [Dec. 9, 1960], No. 42343/61. Heading B8D. A plastics bottle, especially of polythene has a neck followed by a bulge 6 followed by a constriction 5 in the upper half of the bottle, the thickness of the lateral wall at every place being inversely proportional to the diameter of the bottle at that place and the thickness of the bottom being greater than the minimum thickness of the lateral wall. The bottle may include a concave part 3 separated from the constriction 5 by a convex portion 4. The bottle is closed by welding the neck 7, and a spout 9 having a flange 10 and a solid extension 11 is provided which can be cut along the dotted line to form a pouring nozzle which can be closed by the extension 11. The bottle is made by heat-expanding a tube of polythene in a mould, the spout being formed simultaneously therewith.
Patent GB-927756-A (GB)
Title: Synchro error corrector
IPC: G05D3/12
Filed: 1959-12-14
Abstract: 927,756. Resistance networks. UNITED AIRCRAFT CORPORATION. Dec. 14, 1959 [Dec. 31, 1958], No. 42354/59. Class 40 (8). [Also in Group XXXVIII] A resistance network for use in conjunction with a selsyn system comprises a number of resistors 78 connected in parallel across the secondary winding 68 of a transformer 66. The resistors 78 are earthed at their mid points and by means of tappings 82 a potentiometer 60 is calibrated to have the voltage distribution indicated by the chain line joining prints A1 ... A16.