baber/WOPTO huggingface dataset:
Patent GB-677083-A (GB)
Title: Improvements relating to printers' proof presses
IPC: B41F3/28
Filed: 1949-10-15
Abstract: 677,083. Proof-presses; feeding webs. ASHTON, S. H. Sept. 19, 1950 [Oct. 15, 1949], No. 26502/49. Classes 100 (i) and 100 (ii). A hand proof-press comprises a carriage D supporting a rubber inking roller A and an impression roller B, whereby the apparatus can be manually moved over a flat printing-surface T, the inking roller leading. Mounted in slots in a part D<SP>1</SP> of the frame is a roll C of paper to be printed on. As the diameter of the roll decreases, it remains in contact with the roller B, due to its own weight assisted by springs H<SP>2</SP>. By releasing screws G, a used roll can be replaced. The roller A is pre-inked by rolling it over an ink plate, with the frame D tilted to hold the roller B clear of the plate, the ink being taken up by distributing rollers A<SP>1</SP>-A<SP>4</SP>. Feeding webs.-The web C<SP>1</SP> is unwound from the roll and led round the roller B by means of guide plates X, Y, passing between the roller B and the surface T. A guide plate W prevents the end of the paper web from falling downwardly to the left of the roll C. According to the Provisional Specification the roller B is also of rubber.
Patent GB-711814-A (GB)
Title: Improvements in or relating to beam-splitting or beam-combining devices using optical interference coatings
IPC: G02B27/10
Filed: 1951-11-13
Abstract: 711,814. Optical apparatus. TECHNICOLOR MOTION PICTURE CORPORATION. Nov. 13, 1951 [Aug. 13, 1951], No. 26549/51. Drawings to Specification. Class 97(1) In order to prevent total internal reflection and reduce polarization over a wide field angle in a device for splitting or combining light beams which comprises two transparent bodies between which is sandwiched an interference coating oblique to the light admitting surface of one of the bodies and having alternate layers of high and low refractive indices, the lower refractive index of the layers is at least substantially equal to and preferably greater than the refractive index of the transparent body having the light admitting surface. The lower index layers preferably have a refractive index between 1.5 and 1.8, while the higher index may be 2 or more. Lead fluoride and silicon monoxide are preferred for the lower index layers while zinc sulphide or titanium dioxide may be used for the higher index layers. The coating may have ten or more layers to reflect 80 per cent or more of the light of one spectral range and be superimposed upon a second coating designed to reflect 80 per cent or more of the light of a second spectral range, the two coatings being formed within a beam splitting cube which may be used in colour photography. U.S.A. Specification 2,392,978 and Specifications 398,339 and 605,489 are referred to.
Patent GB-482713-A (GB)
Title: Improvements in or relating to extending frames for shop window blinds and the like
IPC: E04F10/06
Filed: 1936-10-01
Abstract: 482,713. Awnings. HIPWOOD, J., and HIPWOOD,SON,& CO., Ltd., G. Oct. 1, 1936, No. 26593. [Class 20 (iii)] Each side arm of an .extending or folding frame for a shop window or like blind of the kind comprising two or more toggle arms 1, 2, pivoted together in such manner that when opened they lie at an angle is so hinged that the arms lie together when folded. The inner arm is extended beyond the pivot and a rest 6 for the other arm formed thereon. The inner arms may be mounted on the structure on a hinged pivot 7. The arms are of channel section, the outer one being adapted to lie between the flanges of the inner one when folded. Specification 483,001 is referred to in the Provisional Specification.
Patent GB-760877-A (GB)
Title: Improvements in or relating to wheel and brake assemblies
IPC: F16D55/40
Filed: 1954-09-14
Abstract: 760,877. Vehicle wheels; multi-disc brakes. BENDIX AVIATION CORPORATION. Sept. 14,1954 [Sept. 28, 1953], No. 26647/54. Classes 103 (1) and 144 ( 1 ). To provide maximum brake-installation space therewithin, a wheel is formed with a non- rotatable body 10, of major diametric and minor axial dimension of the wheel, carrying on its periphery a bearing means which provides the sole structural support for two tyre-carrying rotatable wheel rim halves 41, 42, a brake assembly being mounted on one or each side of the body 10 within the cylindrical space bounded by the wheel rim halves 41, 42. As shown in Fig. 1, an aircraft wheel body 10 comprises two matched plates 11, 12 integral with, or secured to, brake-carrying hub sections 13, 14 which together define an axle space 15, the plates being secured together by bolts 18. The peripheries of the plates 11, 12 together provide a seating for the inner race rings 31, 32 of a double thrust taper roller bearing, the race rings being clamped against a flange 37 on the plate 12 by a locking ring 39 screwed on the plate 11. The wheel-rim halves 41, 42 are bolted together to clamp therebetween the bearing outer race ring 33 which seats in an annular recess 47 defined by the inner peripheries of the rim halves. Brake assembly.-A series of hydraulic brake cylinders 20 are located in matched openings 21 in the peripheral regions of the plates 11, 12, each cylinder housing a pair of oppositely acting pistons 22, 23, to which are screwed laterally movable pressure-plates 24, 25 respectively. A series of stator discs 60, faced with friction material 64 are slidably keyed into slots 63 in the hub sections 13, 14 and are interleaved with rotating friction elements comprising a series of segments 65 slidably mounted on keys 68 riveted to the underside of the rim halves 41, 42. Reaction plates 70, 71 are keyed and locked on the axially outer ends of the hub sections 13, 14. In the arrangement shown in Fig. 3 non- rotatable wheel plates 101, 101<SP>1</SP> are welded to an elongated brake-carrying hub 102, and inner race rings 113, 114 of a taper roller bearing are mounted in annular recesses 109, 112 formed respectively in the periphery of plate 101, and the outer periphery of a retainer ring 111 which seats on the plate 101<SP>1</SP> and is bolted to the plate 101. The brake assembly, which may be mounted in one or each side of the wheel, comprises interleaved stator and rotor discs 134, 138 slidably mounted in keyways defined by keys 136, 139 respectively, bolted to a brake carrier 104 on the hub 102 and to the underside of the rim section 121. Non-rotating pressure plates 141, 142 are mounted in the axially outer ends of the keyways defined by keys 136, and are actuated by hollow two-part hydraulic pistons 143, 1431 screwed thereto and operating in a series of annularly arranged cylinders 144 in an end housing 145. Retraction of the pressure plates is effected by springs 151.
Patent GB-654965-A (GB)
Title: Improvements in and relating to gas compressors
IPC: F04B39/00
Filed: 1947-10-03
Abstract: 654,965. Lubrication systems. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 3, 1947, No. 26687. Convention date, Oct. 4, 1946. [Class 12 (iii)] [Also in Group XXIV] In a gas compressor comprising pistons 6 coupled by connecting-rods 8 to the pins 18 of a crank-shaft 7, a groove 21 on each crank-pin 18 terminating a lubricating passage 17 therein conveying lubricant from a crank-shaft passage 16 to a connecting-rod passage 19 limits communication between these passages 16, 19 to a predetermined short period (of between 20 degrees and 90 degrees is shown) after top deadcentre piston position. This provides that the said communication obtains only during a low bearing pressure period, thereby minimizing the risk of crankpin oil film collapse, and that inertia of the oil in the passage 19 facilitates the action of an eccentric and spring-pressed vane pump 12, 13, which action is also centrifugally assisted by the crank-pin's eccentricity.
Patent GB-974498-A (GB)
Title: Arrangement for changing the pivotal point of a part
IPC: G05G7/04
Filed: 1961-07-24
Abstract: 974,498. Brake pedals; linkwork. O. VOSER. July 25, 1961 [July 25, 1960; Oct. 17, 1960], No. 26754/61. Headings F2E and F2K. [Also in Divisions B7 and E2] A member 10 (Fig. 1), which may be a brake pedal, is pivoted at 21, 22 to two arcuate elements 15, 16, slidable respectively on two arcuate surfaces 13, 14 on a fixed member 12, the centre of curvature of each surface lying on the path of the pivot carrying the element slidable on the other surface so that when a force F is applied to the member 10 it pivots first about the point 21, until the element 16 abuts the member 12 at 18, and then pivots about the point 22. The magnitude of the force R applied by the pedal therefore increases when the point of pivoting changes. The invention is shown in Figs. 4 and 5 applied to a bicycle brake comprising two jaws 4, 5, which carry the brake blocks and are pivoted together at 6, and an intermediate member 3 on which the brake cable acts as shown by the arrow F. The member 3 is provided with a projection 38, which transmits a thrust R to an extension 50 of the jaw 5 by means of a threaded rod 52 and a spherical nut 53, and with two arcuate surfaces 35, 36 over which sliders 31, 32 rotatably mounted in recesses 42, 43 in a projecting part 41 of the jaw 4 are adapted to move. At the commencement of the braking operation the member 3 is in its raised position, and pivots first about the centre A of the arcuate surface 36 and finally about the centre B of the arcuate surface 35 so that the thrust R is much larger during the second half of the braking operation. A roller 37 is pivoted on the member 3 and moves on arcuate surfaces 45, 46 on the jaw 4 to prevent lateral displacement of the parts. In various modifications the roller may be replaced by a pair of arcuate surfaces on the member, or a free roller may act between opposed sets of arcuate surfaces on the member and the jaw. In a further modification the sliders 31, 32 are rotatably mounted in recesses in the member 3 and slide on arcuate surfaces on the part 41 of the jaw 4. The sliders may be replaced by rollers.
Patent GB-858252-A (GB)
Title: Improvements in or relating to resinous plastic compositions
Inventor: ROPER ALEC NORMAN
IPC: C08L9/02
Filed: 1958-08-20
Abstract: A plastic composition comprises a butadieneacrylonitrile elastomer having a methyl ethyl ketone-insoluble gel content below 35% blended with, as the sole resinous component of the composition, a rigid interpolymer formed by copolymerizing one or more alkyl-substituted styrenes with acrylonitrile, the amount of the elastomer being not more than 40% by weight of the composition.  Alkyl styrenes specified are alpha-methyl styrene and nuclear alkyl derivatives thereof, o-methyl, o-isopropyl, p-isopropyl, o-tert. butyl and p-tert. butyl styrenes and isomeric mixtures of methyl, isopropyl and tert. butyl styrenes, dimethyl styrenes in which one of the methyl groups is in the o-position with respect to the vinyl group, isomeric mixtures of p  dimethyl styrenes; diisopropyl styrenes and ditert. butyl styrenes.  The elastomer may be treated by hot milling prior to blending.  Blending may be effected by mechanically mixing the polymeric materials or by co-coagulation of mixed latices of the elastomer and the interpolymer.
Patent GB-826469-A (GB)
Title: Improvements relating to self-locking nuts
Inventor: BURNELL WILLIAM JOHN
IPC: F16B39/14
Filed: 1957-08-26
Abstract: 826,469. Making self-locking nuts. SIMMONDS AEROCESSORIES Ltd. July 11, 1958 [Aug. 26, 1957], No. 26832/57. Class 83 (2). [Also in Group XXV] A method of making a self-locking nut of the kind comprising a body 1, Fig. 2, with screwed bore 2 and a recess 2a housing an insert 3 with screwed bore 3a of the same pitch as, but out of phase with, bore 2, means preventing relative turning of body and insert, and resilient means 6 which is compressed when the nut is screwed on to a bolt, consists in providing on the insert one or more downwardly extending parts 4, Fig. 1, which raise the centre of the insert, tapping the body and insert in one operation, and then flattening parts 4. The resilient means may comprise a spring 6 or a ring of resilient material, e.g. rubber or nylon. The insert may be prevented from turning by ears passing through slots 5 in the recess well. Alternatively the insert and recess may be non-circular, e.g. hexagonal.
Patent GB-838984-A (GB)
Title: Improvements relating to the formation of external fins on metal tube stock
Inventor: MAUGHAN GEORGE THOMAS
IPC: B21C37/20
Filed: 1957-08-26
Abstract: 838,984. Making finned tubes for nuclear reactors; forging. FAIREY CO. Ltd., [formerly FAIREY AVIATION CO. Ltd.]. Nov. 24, 1958 [Aug. 26, 1957], No. 26866/57. Classes 83 (2) and 83 (4). A method of forming external fins on tubular metal stock comprises enclosing a workpiece 10 in an external tubular die 11 whose internal moulding surfaces are formed with a pattern of recesses 12 corresponding to the required fin pattern, and drawing an expander plug 14, whose maximum working diameter is larger than the original bore of the workpiece 10, through the workpiece bore so as to expand its wall and cause the material of the wall to be displaced outwardly at 16 into the recesses 12 of the die 11 to produce the required fin pattern. The workpiece 10 which may be of magnesium beryllium alloy is heated and inserted into the heated die 11 which is in two semi-cylindrical parts clamped together. The plug 14, of frustoconical, spherical or barrel shape, may be vibrated as it is drawn through the workpiece or be jumped through in a series of steps. The fins may be circumferential or helical. The fin pattern may include, Fig. 3, straight radial, longitudinal fins 21 and a number of part-helical fins 22 of lesser height extending between, and rooted at their ends 24 to, adjacent fins 21. Radial extension strips may be riveted to the outer edges of the longitudinal fins 21 to increase their height. The finned tube of Fig. 3 may be inserted into a graphite sleeve, being centralized therein by the fins 21, for heat-exchange purposes in nuclear reactors.
Patent GB-1319422-A (GB)
Title: Method in the manufacture of ligno-cellulosic fibreboard
IPC: B27N3/08
Filed: 1971-04-19
Abstract: 1319422 Making fibreboard MOTALA VERKSTAD AB 19 April 1971 [29 April 1970] 26947/71 Heading B5A A method of manufacturing lignocellulosic fibreboard comprises suspending a wet pulp in a gas from which it sediments to form a pulp web, the moisture ratio of the pulp having been rendered uniform before the web is formed. In Fig. 1 the pulp is prepared in a digester, 1, refiner 5, and a cyclone 7 before it is dewatered to a uniform moisture ratio in a press 11. The pulp is then passed to a shredder 13 and bunker 15 before moving to a forming machine 22 where the gas/fibre suspension is formed. In the machine 22 the fibres sediment on to a surface 25, are compressed at 26, sawn into sheets at 27, and pressed at 30. In Fig. 2, not shown, water is added to the pulp before compression, at 26. The pulp layer on the surface 25 can be machined to a uniform thickness by a cutter (36) in Fig. 3, not shown. In Fig. 4, not shown, a belt weigher (38) feeds pulp to the machine 22 as a function of the speed of movement of the surface 25. The arrangement in Fig. 5, not shown, includes a tank (44) to receive water from the dewatering apparatus 11, which operates at the same pressure as the apparatus 11. In Fig. 6, not shown, the cyclone 7 is placed after the dewatering apparatus 11, and in Fig. 7, not shown, a pulp container (30) is connected to the dewatering apparatus (48). Colouring agents and insecticides can be added to the fibreboard.
Patent GB-731665-A (GB)
Title: Improved means for controlling the deflection of loaded structures
IPC: G01M5/00
Filed: 1951-11-16
Abstract: 731,665. Tubular metal structures. VICKERS ARMSTRONGS, Ltd., and WALLIS, B. N. Feb. 16, 1953 [Nov. 16, 1951], No. 26967/51. Class 20 (2). The deflection of a structure comprising tubes 10, 11, Fig. 1, is restricted by controlling the pressure of fluid within them. The tubes 10, 11 are anchored at two points 23, 23 at one end and pivoted together at the other end 13. The structure is shown subjected to alternate loads in opposite directions at the end 13 by a motor 151. Each tube 10, 11 houses a rod 19, Fig. 3, fixed adjustably to the tube at the end 13 and having a piston valve with lands 191, 192 at the other in a valve block 22. When the structure is subjected to strain, causing tension or compression in a tube, the tube lengthens or contracts, causing movement of the valve lands 191, 192 controlling series motor 32 operating a valve 36 which by a pipe 17 admits fluid to or releases it from the tube to increase or decrease the pressure therein. The pressure fluid supply pipe 18 is connected through a reducing valve 25 to ports 24 in the two valve blocks 22. Both tubes 10, 11 have exactly similar but separate control systems.
Patent GB-1106911-A (GB)
Title: Apparatus for moving earth and other materials
Inventor: LIEBRECHT HEINRICH FRITZ
IPC: E02F3/34
Filed: 1965-06-25
Abstract: 1,106,911. Excavator buckets. LEEFORD (LONDON) Ltd. 27 June, 1966 [25 June, 1965], No. 27060/65. Heading E1F. To permit of positive ejection of material from a bucket and also the use of the bucket for dozing purposes there is pivotally secured to the side walls of the bucket immediately to the near of the digging edge thereof a plate that is shaped to the curvature of the bottom edges of the side walls and can be swung through the bucket by a jack-actuated linkage from alignment with the bottom edges to alignment with the front edges of the side walls.
Patent GB-1457225-A (GB)
Title: Controlling pig iron refining
IPC: C21C5/34
Filed: 1975-06-26
Abstract: 1457225 Controlling bottom-blown converters CENTRE DE RECHERCHES METALLURGIQUES - CENTRUM VOOR RESEARCH IN DE METALLURGIE 26 June 1975 [27 June 1974 4 Oct 1974] 27071/75 Heading C7D The refining process in a converter bottomblown with oxygen is controlled by monitoring the sound emitted by the converter, detecting the instant at which the intensity shows a sudden and considerable decrease, and then blowing in only that amount of additional oxygen, determined on the basis of previous experience, which will produce the desired final product. In a preferred embodiment, the bath is initially blown at a constant oxygen rate determined by the age of the lining, initial silicon content of the charge and charge weight; the carbon oxide content of the exhaust gases is monitored and when a sudden drop occurs the blowing rate is increased to the maximum possible. The amount of oxygen blown in after the noise level drops is calculated from a predetermined relationship between the amount of oxygen blown after that time and the iron content of the slag.
Patent GB-536607-A (GB)
Title: Improvements in stretchable leather shoes
IPC: A43B23/02
Filed: 1939-10-04
Abstract: 536,607. Boots &c. CLAYTON, T. A. (United States Rubber Co.). Oct. 4, 1939, No. 27145. A Specification was laid open to inspection under Sect. 91 of the Acts, April 15, 1940. [Class 17 (ii)] The part 10 of a shoe is made of stretchable leather backed with elastic fabric adhesively secured to it, the elastic yarns extending substantially parallel to the longitudinal axis of the shoe. The leather 10 matches the unstretchable leather at the parts 28, 29, 30. The shoe has no fastening means. Specification 504,858 is referred to.
Patent GB-1234792-A (GB)
Title: Face pumped laser apparatus
Inventor: MARTIN WILLIAM SONDERMAN
IPC: H01S3/02
Filed: 1968-06-07
Abstract: 1,234,792. Lasers. GENERAL ELECTRIC CO. 7 June, 1968 [7 June, 1967], No. 27307/68. Heading H1C. An end-pumped laser comprises a disc 11 of active medium, and a fluid light-transmissive medium located between a major surface of the active medium and an optical pumping source 13; the fluid, which has a refractive index equal to or greater than that of the active medium, being positioned with an inner surface in contact with the active medium and an outer surface closely adjacent to the pumping source. As shown in Fig. 1, the laser active medium 11 comprises a right circular cylindrical body having a pumped major surface 14 and an emitting major surface 15, and may consist of 4% neodymium-doped glass. The active medium closes the smaller end of a reflective frusto-conical cavity 17 formed in a metallic block 16, the larger cavity end being sealed by a thin glass disc 23 of substantially the same refractive index as the active medium. The cavity is filled with the light-transmissive fluid medium which may be glycerine, benzylbenzoate or tetrachloroethylene. The pumping radiation from source 11 is converged on to the surface of the active medium by a planoconvex lens 28, and is filtered by a 10% potassium chromate in water solution, contained in a space 32 between the lens and the glass disc 23, and which passes wavelengths from 5000- 9000 Š. The active medium is secured in a recess 19 of block 16 by a ring clamp 21, a cavity 34 being provided between the edge of the active medium disc and the block which is filled with an absorption material for preventing transverse reflections and possible spurious modes. The glass disc 23 and the lens 28 are clamped to the block in spaced relationship by a shouldered ring 25 and a clamping ring 30. The major surface 14 of the active medium is coated with dicroic thin dielectric layers 36 transparent to the pumping radiation and reflective to the laser output radiation. Alternatively, these layers may - be placed on a separate, optically transmissive substrate located between the active medium and glass disc 23. The pumping source 13 comprises an aluminium reflector 40 defining a plurality of separate reflective modules 42, each containing a respective discharge (e.g. xenon) lamp 41, the pumping source being moved to a position in close proximity to the lens.
Patent GB-206335-A (GB)
Title: Apparatus for rolling cigars, cigarettes and the like
IPC: A24C1/10
Filed: 1922-10-09
Abstract: 206,335. Franke, P. Oct. 9, 1922. Cigarette-making machines; cigar-making machines.-In machines of the rolling-apron type for making cigars, cigarettes, cigarillos, &c., the tobacco roll, while still wrapped in the rolling- apron, is cut by stationary knives projecting from the bed. The machine is shown in elevation in Fig. 1 and in plan in Fig. 2. The tobacco 6 is placed on the apron 1 in a recess 5 in the table 7 and is rolled up by a roller 4 carried by a slide 9, which is guided parallel to the length of the bed by flanges 10, its vertical motion being unimpeded. In an oblong opening 12 in the bed 7 knives 15 are arranged to project above the bed, their distances apart being adjusted by spacers 14 of varying thickness clamped together and adjusted laterally by set-screws 16. The roller 4 may be in one piece or may be made up of rings 19 of similar lengths to the spacers 14, grooves being formed in positions corresponding to the knives 15 by rings of smaller diameter, and the whole roller being adjustable axially by screws 20. As the roller passes over the screws 15, these penetrate the cloth, cut the tobacco, and enter the grooves in the roller 4, the wrapper or paper having previously been place on the forward part of the apron. The apron is clamped at each end of the bed by rails &c. 24 so that it is not pierced, the excess being wound on a roller 26. Openings 21, 22, 23 are formed in the bed to permit escape of tobacco waste. The bed may form part of a cylinder.
Patent GB-1405089-A (GB)
Title: Hoppers
IPC: B65D90/48
Filed: 1971-06-11
Abstract: 1405089 Hoppers for seed or fertiliser spreaders W T TEAGLE 7 Aug 1972 [11 June 1971] 27447/71 Heading AID [Also in Division B8] A demountable hopper comprises an openended container of truncated conical or pyramidal form moulded from polythene or other resilient corrosion-resistant synthetic plastics material. In the Figure hopper 1 is mounted on a seed or fertiliser broadcaster to be mounted on the three-point linkage of an agricultural tractor. The upper rim of the hopper is engaged by clips 3 resiliently secured to rail 4 surrounding the hopper on three sides and secured to the machine frame 6. The hopper preferably has translucent walls and scales 7, 8, formed during the moulding to enable the amount of material in the hopper to be determined.