baber/WOPTO huggingface dataset:
Patent GB-951795-A (GB)
Title: Photographic camera
IPC: G03B17/20
Filed: 1960-09-30
Abstract: 951,795. Photographic cameras; viewfinders. AGFA A. G. Sept. 30, 1960 [Oct. 3, 1959], No. 33727/60. Headings G2A and G2J. A photographic camera has an aperture in the housing for the entry of a light beam and an optical system for directing said beam to an observation window in the housing, said system including a fixed coloured, light transmitting or reflecting element in the path of at least part of said beam, and the movable indicator of a photo-electric exposure meter within the housing being provided with means including a different coloured light transmitting element and being interposable into the path of the beam, said means being adapted to create a difference between the colour of the beam finally observed when the illumination is sufficient and when it is insufficient for an exposure. As shown, light passing through an aperture 16 (provided with a lens) in a housing 1 is directed to a viewfinder eyepiece 6 comprising the observation window by way of a fixed mirror 17, two apertures 12 and 13 in an opaque screen 11, an aperture 15 cut in a mirror 7 which is provided for reflecting images of field bounding marks 9 into the view finder image field, a wedge prism 14 for ensuring that the indication images are centrally placed in said image field, a lens 8 and a semi-reflecting mirror 10. The aperture 12 is provided with a translucent green filter whereas the aperture 13 is translucent and not coloured. Also the pointer 18 of the photoelectrically actuated galvanometer 4 carries an opaque vane 20 and a translucent red vane 19, the arrangement being such that in conditions where the lighting is insufficient for proper exposure, first the aperture 12 is covered by the vane 20 and then the vane 19 comes into line with the aperture 13 so that the green mark visible in the viewfinder is replaced by a red mark, preferably of larger dimensions. Alternative colours may be used and the arrangement may be modified so that the pointer vanes move into the path of the light beam when illumination is sufficient rather than insufficient. In a modification (Fig. 3-not shown), the two apertures 12, 13 and the two vanes 19, 20 are arranged horizontally with respect to each other, instead of vertically. In a further modification (Fig. 4-not shown) said two apertures comprise two halves of a single large aperture and the pointer 18 carries a single translucent red vane. In a still further embodiment (Fig. 5, not shown), a single clear aperture in the wall 11 is provided, the pointer carries a single translucent red vane and the mirror 17 is coloured green.
Patent GB-1452586-A (GB)
Title: Fluid pump
IPC: F04D29/12
Filed: 1974-07-31
Abstract: 1452586 Seals JACUZZI RESEARCH INC 31 July 1974 [28 Nov 1973] 33738/74 Heading F2B In a pump having a plastics impeller 25, wear, due to relative rotation of the housing 43 and the impeller is prevented by making them rotatably fast with one another e.g. spring end 85 entering hole 87. The spring 41 provides sealing pressure and secondary sealing for carbon ring 49. A ceramic ring 55 is mounted in grommet 53. The impeller is preferably of glass filled plastics.
Patent GB-796365-A (GB)
Title: Improvements in or relating to power-operated access platforms
IPC: B66B9/187
Filed: 1955-11-24
Abstract: 796,365. Guided platform hoists. ACCESS EQUIPMENT, Ltd., RUSLING, J. T., and NICHOLLS, J. W. Nov. 26, 1956 [Nov. 24, 1955], No. 33742/55. Class 78 (3). A platform 10 is raised and lowered on a column 2 by motor-driven sprockets 20 which engage a double track roller chain 16 secured to the column. The sprockets are driven by motor 22 through reduction gearing. Rollers 12, 13 which guide the platform on the flanges of the column are journalled on a member 11 secured to the platform which also carries manually operable control switches 26, and a guard rail 32 (Fig. 1, not shown). Limit switches are provided to stop the platform automatically at the ends of its travel; one of these is shown at 29. In a modification further adjustable rollers 33, 34 are provided on member 11. In another modification (not shown) the column comprises a circular section tube on which the platform is guided by curved guide members. In a further modification the column is.rotatable about a vertical axis, and is movable in a, vertical plane.
Patent GB-1272389-A (GB)
Title: Improvements in and relating to banded power transmission belts
Inventor: CLINKENBEARD DONALD EDWARD
IPC: F16G5/08
Filed: 1970-07-13
Abstract: 1,272,389. Transmission belting. DAYCO CORP. 13 July, 1970 [30 July, 1969], No. 33843/70. Heading B5N. [Also in Division F2] A power transmission belt comprises a plurality of laterally spaced belt bodies arranged parallel with respect to each other and a band interconnecting the bodies, the band comprising a woven fabric layer having threads extending diagonally with respect to the longitudinal direction of the belt. In Fig. 1 belt 10 comprises individual belt bodies 11, 12 and 13 each having an outer tension section 15 and an inner compression section 16 made of natural or synthetic rubber, e.g. a polyurethane, having longitudinally extending strength cord 17 embedded between them and having a cover 18 wrapped around each of them, the belt bodies being interconnected at their outer surfaces by means of band 14 integrally bonded thereto leaving ridges 19 between them. Band 14 comprises a layer of fabric, e.g. of cotton, viscose rayon, polyester or nylon fibres, embedded in an elastomeric layer so that the threads of the fabric are diagonal to the longitudinal direction of the belt. The warp and weft threads may be at an angle of 90 degrees with each other or at an angle of 95-155 degrees with each other. Band 14 may comprise a plurality of fabric layers, the threads of each fabric layer being parallel or non-parallel to the threads of the other layers.
Patent GB-323323-A (GB)
Title: Improved means for operating roller shutters and the like
IPC: E06B9/76
Filed: 1928-11-19
Abstract: 323,323. Taylor, A., and Blather & Platt, Ltd. Nov. 19, 1928. H a n d driving- mechanism. - The crank handle for actuating the raising and lowering mechanism of roller shutters and the like is provided with a handle f pivoted to the crank arm e which is adapted by means of a cam j and slide g with inclines h to engage the driving- clutch b, c, when brought into operative position at right angles to the crank arm. The clutch members are separated by springs i, k, when the handle is allowed to move into line with the crank arm. The handle may have a stop m for the inoperative position and may be secured in the operative position by a pin n. The movable clutch member b is feather-keyed to the handle boss which is rotatably held on the spindle d by the nut o. The clutch member c is pinned to the spindle.
Patent GB-1500279-A (GB)
Title: Whip antennas
IPC: H01Q5/15
Filed: 1975-05-05
Abstract: 1500279 Aerials PLESSEY CO Ltd 5 May 1975 [1 Aug 1974] 33936/74 Heading H4A An asymmetric dipole whip antenna comprises a stub portion 6, a stepped line impedance transformer device 8 giving simultaneous impedance match between a feed point 24 and an output port 26 over two frequency bands which are separated from each other, and a choke 10. The choke 10, made by coiling a 75 ohm cable 28 on a ferrite core 30, isolates the lower part of the antenna from the ground plane 4 which may be the body of a vehicle. The centre frequencies of the bands may be in the ratio 2:1. Outer covering 21 may be of glass fibre and the inner antenna element 23 may be a Be-Cu alloy.
Patent GB-176853-A (GB)
Title: Improved method of toy building and means therefor
IPC: A63H33/04
Filed: 1920-12-03
Abstract: 176,853. Allday, A. D. Dec. 3, 1920. Building-blocks.-Relates to toy building-elements and consists in providing, for use in connection with scale-model bricks, grooved lintels, window sills and door steps, and a roof member. The lintels over doors or windows are formed by wood or clay blocks e, Fig. 4, grooved on the underside to receive a cardboard representation of a window, or a celluloid frame with a transparent filling. Similar members are provided for door lintels and steps. These lintels are treble the length of the standard brick so that they can be built into a wall with the standard bricks. The roof member consists of a corrugated sheet of cardboard m, Fig. 7, pressed with parallel ridges n to represent pantiles, and the apex o is pressed to represent ridge tiles.
Patent GB-654392-A (GB)
Title: A-mould for coating with rubber or other plastic material or plug-and-socket or similar contact connection fixed to electric conductors
IPC: B29C45/14
Filed: 1947-12-24
Abstract: 654,392. Injection-moulding rubber &c. coverings on to connections fixed to electric conductors. HAVLICEK, J. Dec. 24, 1947, No. 34186. Convention date, July 9, 1945. [Class 87 (ii)] A plug-and-socket or similar contact connection fixed to an electric conductor 8 is coated with rubber &c. by injection in a mould 12, 12<SP>1</SP>. The angle a between the delivery end of each injection passage 2 and the conductor axis does not exceed 90 degrees, and the distance 5 between the said delivery end and the rear end 8a of the mould cavity is less than the distance 4 between the said delivery end and the opposite end of the mould cavity. This construction ensures that the conductor is not forced out of the mould. The conductors 9 are attached to contact members 10 which are accommodated in bores in a mould part 11. A plate 3 of insulating material spaces the members 10 apart.
Patent GB-366171-A (GB)
Title: Improvements in or relating to folding beds or chairs
IPC: A47C17/68
Filed: 1930-11-13
Abstract: 366,171. Folding beds and chairs. WELLS, E. G. and HOKANSON, A. E., of X Chair Patents Co., Hayes, Middlesex. Nov. 13, 1930, No. 34204. [Class 52 (ii).] The side members 10 of a folding chair or bed frame are supported on a pair of struts 12. hinged together at their lower ends and having, abutting their undersides near their tops, hinged legs 15. A hinged stay can be provided between the struts 12 or the end-bars 17 of the top frame can act as stays and are preferably detachably fitted over spigots on the side members 10 to lock the hinges between these parts and the struts 12 in the manner set forth in Specification 324,314, [Class 52 (ii), Furniture for sitting &c. upon].
Patent GB-754089-A (GB)
Title: Improvements in or relating to electric transformer circuits
Inventor: CATTERMOLE KENNETH WILLIAM
IPC: H01F19/06
Filed: 1954-11-26
Abstract: 754,089. Transformer networks. STANDARD TELEPHONES & CABLES, Ltd. Nov. 26, 1954, No. 34330/54. Class 40 (8). A transforming circuit for operation over a wide frequency band, e.g. 45 c/s. to 3.5 Mc/s. comprises two transformers 1, 2, Fig. 1, having adjacent pass bands, the two transformers being constructed and arranged or arranged with other impedance elements that they provide an all-pass network in the transition region between the frequency bands. In this region the equivalent leakage inductance L2 and shunt self capacities C (assumed equal) of the L. F. transformer 1, and the equivalent shunt inductance L1 of the H.F. transformer 2 have to be taken into account but the shunt inductance of the L.F. transformer and the leakage inductance and shunt self capacity of the H.F. transformer can be neglected. Fig. 3 shows the equivalent circuit of the transformers at the transition region for a transformation ratio of unity. Fig. 4 shows the equivalent lattice network with the proportional values of the components. The circuit of Fig. 4 will have all-pass characteristics if For a transition frequency f 0  = # 0 /2# it can be shown that the components can be expressed by the following relations: The parameters of the transformers 1, 2 are arranged to have these values. The passband (Fig. 5) is wider than the sum of the bands of the individual transformers by the octave between f 0  and 2f 0 . The phase shift varies between 0 and 2#. If the two transformers have different losses one of them may be loaded with a shunt resistance. In an alternative circuit (Fig. 6) two equal capacitors 14, 15 are connected across the primary and secondary windings of the L.F. transformer 1. These capacitors are large enough in combination with the inherent capacity of the windings to render the effect of the leakage inductances negligible over the transition region. The secondary winding of the H.F. transformer is reversed. The Specification, gives equivalent networks and values for this network. In the arrangement of Fig. 10 the two transformers are connected in parallel, inductors 16, 17 of value L 2/ 2 being inserted in series with the windings of the L.F. transformer 1 and capacitors 18, 19 of value C being inserted in series with the windings of the H.F. transformer 2. If L 1  is the primary and secondary inductance of the transformer 2, neglecting the leakage inductance, then the equivalent network will be identical to Fig. 3 and the values will be those already given. The values of the added components and the transformer parameters may be modified for circuits containing transformers with ratios different from unity.
Patent GB-896787-A (GB)
Title: New theophyllin compounds and their production
IPC: C07D473/08
Filed: 1958-10-27
Abstract: The invention comprises theophyllin bases of the general formula <FORM:0896787/IV (b)/1> (wherein R1 and R2 represent alkyl or hydroxyalkyl groups) and their acid addition salts (e.g. nicotinates), and the preparation thereof by heating a 7-(g -halo-b -hydroxypropyl)-xanthine of the general formula <FORM:0896787/IV (b)/2> (wherein X represents a halogen) with a secondary amine or by reacting theophyllin with a haloalkanolamine of the general formula X-CH2-CH(OH)-CH2-NR1R2 in the presence of an alkali metal hydroxide or carbonate.  The products are useful for treating diseases of the peripheral blood vessels.  Haloalkanolamines of the last general formula above are prepared by reacting epihalohydrins with secondary amines in a hydroxylic solvent.
Patent GB-858459-A (GB)
Title: Improvements in or relating to releasable couplings
Inventor: NELSON AUSTIN
IPC: A01G9/14
Filed: 1957-11-04
Abstract: 858,459. Brackets. ARCHER WORKS ENGINEERING CO. Ltd. Oct. 27, 1958 [Nov. 4, 1957], No. 34376/57. Class 52(5) [Also in Group XXV] A releasable coupling comprises a male member B, Fig. 3, having a plate 5 extending to a portion 4, and a female member A having a plate 3 hingedly connected at 2 to a hook 1 engageable by the said male portion 4. On assembly, the hook 1 is raised so as to permit entry of the male portion and then lowered to hold the male member in position. The hinge is prevented from being subjected to strain by a grooved ledge 6 on the female member A which receives a projecting end 5a of the male member B, the latter having a ledge 7 to support a shelf, etc. In a modification the female member C, Fig. 4, is hinged at 9 to a plate 10 so as to facilitate entry of the male member. Specification 748,312 is referred to.
Patent GB-301313-A (GB)
IPC: C01B31/08
Filed: 1928-11-23
Abstract: 301,313. I. G. Farbenindustrie Akt.- Ges. Nov. 26, 1927, [Convention date]. Carbon. - Active carbon containing adsorbed acid electrolyte is refined by treatment with nitric acid or a nitrate. The treatment prevents corrosion of iron and other metal apparatus by the carbon. Iron, zinc or other nitrate may be used. The carbon may be repeatedly treated with the refining agent, which may finally be removed, e.g. by washing or steaming or by chemical means or by heat. The treatment of active carbon obtained by carbonization of sawdust in the presence of zinc chloride and containing sulphate and chlorine ions is described, the carbon being boiled twice, with 5 per cent nitric acid, with an intermediate filtering, and the nitric acid being removed from the carbon by washing with dis. tilled water. The carbon obtained is suitable for medicinal purposes and for refining glycerine. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also the treatment of active carbons generally and the use as refining agent of any electrolyte the anions of which are strongly adsorbed but are non-injurious or are easily removable or both. The electrolyte may be a salt, more especially a salt of a weak base, or a free acid, or an electrolyte containing theacetate or other organic anion. The heat treatment may be. conducted so as to produce a further activation of the carbon. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 174,702, 225,891, 243,801 and 291,725.
Patent GB-997332-A (GB)
Title: Improvements relating to foamed cellular materials
Inventor: NEWMAN JOHN LEATHAM MATHEW
IPC: C08J9/35
Filed: 1961-09-27
Abstract: A composite cellular material is made by forming a dispersion of bodies of a thermally expandable solid precursor of a cellular material in a liquid precursor of a latex foam rubber or polyurethane foam, and converting the liquid precursor into a cross-linked cellular material, whereby the solid precursor is expanded to a cellular material by heat during foaming of the liquid precursor and/or cross-linking of the cellular material derived from the liquid precursor. Solid precursors specified are thermally-expandable polystyrene resin compositions, thermally - expandable regenerated cellulose compositions, thermally-expandable vinyl polymer compositions including compositions based on polyvinyl chloride and vinyl chloride copolymers, thermally-expandable polyethylene and polypropylene compositions, and thermally-expandable mixtures thereof.  In an example, expandable polystyrene is incorporated in a mixture of a glycerol-centered polypropylene glycol triol, stannous octoate, N-methyl morpholine and a silicone glycol polymer, which is then mixed with a tolylene diisocyanate and the whole mixture is then foamed.
Patent GB-282760-A (GB)
IPC: B26D1/143
Filed: 1927-12-23
Abstract: 282,760. Berkel, C. F. M. van. Dec. 23, 1926, [Convention date]. Cutting slices in succession.- In a disc-knife machine a clutch, comprising a coil, is interposed in the drive to the knife and means are provided for relieving the stress of the coil to render the clutch inoperative, whereby cheese or the like may be sliced with the knife stationary. As shown in Fig. 3, the lower sprocket 10 of the chain drive to the knife of a reciprocating table machine is loose on an extension 15 of the transverse shaft 9, and is coupled to the part 15 by a tightly-stressed spring 17 which embraces the part 15 and also the hub 16 of the sprocket 10. The ends of the spring are attached to the sprocket 10 and to a ratchet disc 18, the rotation of which may be checked by a pawl 21 operable from the front of the machine. When the ratchet disc 18 is arrested, the grip of the spring on the part 15 is released and the knife remains stationary.
Patent GB-880861-A (GB)
Title: Retaining clips for panel type filters
Inventor: SHEPPARD GEOFFREY DAVID
IPC: F24F13/28
Filed: 1956-11-15
Abstract: 880,861. Clips. VOKES Ltd. Nov. 15, 1957 [Nov. 15, 1956], No. 34995/56. Class 44. A clip 9 for retaining a filter panel 13 on a casing 1 comprises a rod or resilient stiff wire adapted to be hinged to an inner edge of the casing near one of its corners and having a limb formed with a downwardly bent portion 10 forming an abutment adapted to engage the outer surface of the panel 13 and an extended part 11 adapted to be sprung beneath a lug 7 fixed to an adjacent inner edge of the casing 1. As shown, the filter panel 13 enclosed in a frame 14 and is releasably retained in the casing 1 by four clips 9 each of which is pivotally engaged with a hinge plate 4 attached to the casing. Spacers are provided between the casing and the filter frame.
Patent GB-1528108-A (GB)
Title: Truck with reduced air resistance
IPC: B62D35/00
Filed: 1976-08-23
Abstract: 1528108 Reducing wind resistance in vehicles MASCHINTENFABRIK AUGSBERG-NURNBERG AG 23 Aug 1976 [21 Aug 1975] 35014/76 Heading B7B A truck has fairing side panels depending from the vehicle platform for reducing air resistance during travel. As shown in Fig. 2 the lower edge 4 of superstructure 5 is situated above the wheels and fairing panels 1 are hinged to the lower edge of the superstructure 5 to swing upwardly and outwardly. In their lower positions the panels are held against resilient buffer stops 6 on supports 7 by clamps 18. The panels 1, which are preferably made from light metal or glass fibre reinforced resin, have strengthening ribs and sound absorbing material, such as glass or mineral wool, on their inner surfaces. A collision tube 12 may be fixed along the lower edge of the panels or alternatively, the tube may be mounted on the struts 14 or support arm 7. A rubber strip (13), Fig. 3 (not shown), may be detachably secured along the lower edge of the panel. In addition to the fairing panels a deflector plate (16), Fig. 1 (not shown), may be provided at the front lower edge of the drivers cab. In a modification, Fig. 4, upper panel member 10, and the vehicle wall 25 are pivoted to the lower edge 4 about a common pivot axis 8. The panel members 10, 20 are pivotally connected by hinges 21. A closure device 23 provided on member 20 co-operates with an abutment 26 on support arm 7 to maintain the panel in its lowered position. A gas pressure spring 28 is pivotally connected between the panel and support arm 7 so that the panel is held both in the raised and lowered positions by the spring force.
Patent GB-1121147-A (GB)
Title: Devices for measuring forces in a moving strip
IPC: G01L5/04
Filed: 1965-08-17
Abstract: 1,121,147. Dynamometers. SOC. ANON. HEURTEY. Aug.17, 1965 [Aug. 17, 1964], No. 35111/65. Heading G1W. Apparatus for measuring forces exerted on a moving strip arranged to run around a roll rotatably supported by bearings on a shaft includes dynamometric cells interposed between the shaft and roll to measure forces causing displacement of the roll. The tension in a strip 39, Fig. 3, can be deduced from readings derived from two cells 53 arranged between blocks 50 on a fixed shaft 45 and end plates 52 of housings 49 on hollow shafts 44 supporting bearings 42, 43 for the end flanges 40, 41, of a roll 38 round a part of which the strip 39 moves. The tension in the strip causes pivotal movement of the shafts 44 at "ball and socket" joints between matching spherical surfaces of liners 48 on the shafts 44 and of blocks 47 adjacent the middle of the fixed shaft 45. An adjustable spring pressure is applied to the housings 49 to compensate for gravity effects on the roll and its ancillaries. The parts are oriented so that the cells and compensating springs operate in the plane bisecting the angle turned through by the strip in passing the roll, with the cells nearest the strip. With the device of Fig. 1, lateral forces exerted on the strip passing over a roll 1 cause a lateral displacement which is detected by cells 28, 33 in contact with pins 25, 32a bearing on thrust bearings 15, 16 associated with anti-friction bearings 6, 7 supporting the roll 1 on the fixed shaft 10. A spring 24 serves the dual purposes of centering and calibration.