baber/WOPTO huggingface dataset:
Patent GB-258915-A (GB)
Title: Improvements in transformers, choke coils and the like for use in telegraphy and telephony
IPC: H01F19/02
Filed: 1925-05-26
Abstract: 258,915. Clough, N. H. May 26, 1925. Transformers are so arranged that two or more coils can be disposed on a single core without interfering with each other. In the arrangement shown in Fig. 1 coils 1 and 2 are mounted on a three limbed core the coils 1 on the limbs LQ. NO being so connected as to induce equal and opposite fluxes in the limb MP carrying the coil 2; other arrangements depending on the same principle are also described. In the arrangement shown in Fig. 6 coils T<1>, T' are arranged in planes at right angles to each other on a core C, so that flux induced by one core is parallel to the plane of the other. The core C may be built up of interlocking laminations of the forms shown in Figs. 7 and 8. A split electrostatic screen, which may be earthed, may be inserted between the coils. Specification 156,065 is referred to.
Patent GB-408818-A (GB)
Title: Improvements in or relating to weaving in looms having nipper shuttles for drawing weft threads from stationary supplies
IPC: D03D47/40
Filed: 1933-05-11
Abstract: 408,818. Looms with nipper shuttles drawing weft from stationary supplies. TEFAG TEXTIL FINANZ AKT.-GES., Zurich, Switzerland. May 11, 1933, No. 13783. Convention date, May 23, 1932. Addition to 353,765. [Class 142 (ii).] Salvages, forming.-In a loom as described in the parent Specification wherein a weft inserted by a nipper shuttle is cut off to a length somewhat greater than the fabric width leaving projecting ends which are both bent into a fresh shed, each end of the weft thread is transferred to or held by a clip &c. r, which does not enter the shed and is arranged near the fabric edge, a bending-in device then drawing the thread out of the clip as it pushes it into the shed. In the arrangement shown in Figs. 1 and 2, the weft thread is inserted into edge clamps not shown, and cut as described in the parent Specification and from these edge clamps is transferred to clips r the weft ends being bent into a fresh shed and at the same time withdrawn from the clips by movable devices g, which may comprise tubes acting as shown in Figs. 1 and 2, or eyes, or forks, carried by a pivoted arm h. In a modification, the weft a<1>, Fig. 6b, after being beaten up, is inserted directly in a clamp r having jaws t<1>,t<11>, which close in the manner of shears about an approximately horizontal pivot and twist the weft into a position at right angles to the warp threads. The weft is then cut, the reed moves back, a new shed is formed, and an arm h, Fig. 7<a>, arranged below the warp is rocked counterclockwise entering between the warp threads b<1>, b<11> into the shed. The clamp r is now moved towards a hook o on the arm h as shown in Figs. 7<a> and 7b. The weft end is looped around the hook and is drawn thereby into the fresh shed and out of the clip when the arm returns in a clockwise direction. The hooked part of the arm h has ribs ul, u<11>, Figs. 10<a> and 10<b> to space apart the warp threads and it may be provided with a pivoted latch.
Patent GB-1388534-A (GB)
Title: Tyre having a reduced capacity for picking up mud
IPC: D04B1/24
Filed: 1972-08-22
Abstract: 1388534 Tyre treads B F GOODRICH CO 22 Aug 1972 [23 Aug 1971] 13948/74 Divided out of 1385790 Heading B7C A tyre 20 includes a tread portion and a sidewall portion 21, the tread portion having a plurality of circumferentially spaced ribs or lugs 23, 24 and a plurality of circumferentially spaced valleys therebetween each of the valleys having a plurality of spaced thin flexible fins 25 extending transversely across the valleys, each of the fins 25 being of uniform width and being disposed at an acute angle relative to that part of the valley surface from which it extends, and adjacent fins 25 defining grooves therebetween. Preferably the fins and the grooves are of equal width and the fin structure may be moulded integral with the tyre or may be cemented or vulcanized to the tyre. The fin structure in the valleys minimizes mud pick up and mud build up. The tyres are particularly suitable for farm, tractor and military vehicles.
Patent GB-1376206-A (GB)
Title: Centrifugal pumps
IPC: F04D9/02
Filed: 1972-03-24
Abstract: 1376206 Centrifugal pumps GORMAN-RUPP CO 24 March 1972 [24 March 1971] 13957/72 Heading F1C [Also in Division F2] A self-priming centrifugal pump has a substantially axial inlet and an access opening with a removable cover which is laterally spaced from the axis in order to provide access to the pump chamber without disconnecting the connections to the inlet passage and discharge opening, and a volute which is detachably mounted in the chamber and which can be removed through the access opening, the volute having a priming inlet and a discharge inside the pump chamber. The self-priming pump shown comprises a housing 12 forming a priming reservoir and containing a volute 16, the volute comprising a part 92 which is attached to the housing by bolts 100 and a part 106 which, as shown, may be integral with a cover 74 which closes an access opening 38. The volute part 106 affords a cutwater 110 and a portion 108 of the volute wall and has a lining 112 of plastics or rubber which resists wear and abrasion and also forms a seal between the cover 74 and the housing 12. The cover 74 is retained by a clamp bar 80 and a clamp screw 90. The inlet side of the volute 16 is closed by a wear plate 17 which is attached by screws 126 to an inlet assembly 20 which in turn passes through an opening 32 and is secured to the housing 12 by screws 50. The wear plate 17, impeller 15, volute part 92 and shaft seal 30 are removable, in that order, through the access opening 38. A check valve assembly 44, which is sandwiched between flanges of the inlet assembly 20 and a suction pipe 19, is removable without disturbing the inlet assembly and suction pipe, after withdrawal of bolts 68.
Patent GB-999898-A (GB)
Title: Improvements in or relating to internal combustion engines
Inventor: GRAY HENRY VICTOR
IPC: F01P5/06
Filed: 1961-04-19
Abstract: 999,898. Cooling cylinders. BIRMINGHAM SMALL ARMS CO. Ltd. July 9, 1962 [April 19, 1961], No. 14072/61. Heading F1B. A fuel tank 16 is seated in, and forms part of, the upper part of a cowling 10 directing cooling air from a fan 11. The cowling 10 forms the fan casing and the tank 16 is flanged at 17 and welded in a seating formed in the casing 10 so that the bottom of the tank helps to deflect the air towards the engine cylinder 15. A baffle 13 is provided in the cowling and the air is guided past the cylinder 15 by an outlet guide 22. The cowling may be of metal or synthetic resin.
Patent GB-560642-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/02
Filed: 1942-10-07
Abstract: 560,642. Optical objectives. TAYLOR, TAYLOR, & HOBSON, Ltd., and HOPKINS, H. H. Oct. 7, 1942, Nos. 14078 and 14079. Drawings to Specification. [Class 97 (i)] An objective for profile projection comprises four axially spaced simple members, of which the front member is divergent, the rear two members are convergent; and the second member convergent or divergent, in conjunction with a small stop, or the equivalent, located substantially in a position at which rays parallel to the axis, entrant from the rear, come to a focus on the axis, the objective being corrected for chromatic aberration, astigmatism, and distortion with respect to the stop position, and having a substantially flat field. If the second member is convergent, the objective may also be corrected for spherical aberration and coma. The front surfaces of the front two members may be concave, the front surface of the rear member may be convex, and the front surface of the third member may be concave when the second member is divergent. Numerical conditions for radii of surfaces, overall length, diameter of stop, and glasses, and also complete data for two examples, are set out. Specifications 444,350 and 560,611 are referred to.
Patent GB-1500816-A (GB)
Title: Transfer moulding apparatus
IPC: B29C37/00
Filed: 1975-04-07
Abstract: 1500816 Transfer moulding UNIROYAL AG 7 April 1975 [23 April 1974] 14097/75 Heading B5A Apparatus for moulding elastomeric stock comprises an injection unit having an injection chamber 36, an adaptor 34 defining a secondary chamber, valve means 38, 39 permitting unidirectional flow of stock from the injection to the secondary chamber, an apertured end plate 44 disposed at least in part in and movable axially relative to the secondary chamber, and means for moving the injection unit and a mould 80, 82, 84 relative to one another to reduce the axial extent of the secondary chamber and expel elastomeric stock through the end plate 44 and into the mould cavity. The valve means 38, 39 prevents backflow of elastomeric stock into the injection chamber 36 despite any pressure drop in the injection chamber during recharging thereof. A mould assembly 22 is moved towards the injection cylinder 28 initially by a toggle linkage array 20 and finally, to effect injection from chamber C into the mould, by means of a ram 70 in a housing 72 to which pressure fluid is admitted through an inlet 74. Plate 44 is made of heat resistant, flexible insulating material and formed with an array of apertures 58 having annular insets 60, e.g. of PTFE. Heating channels 43, 68 are provided in the adaptor 34 and a heating platen 66 respectively. An insulating sheet 64 is interposed between platen 66 and an end plate 62.
Patent GB-1006635-A (GB)
Title: Method of compensating for the frequency-dependent rotation of the polarisation plane in helically corrugated tubular waveguides
IPC: H01P1/165
Filed: 1963-09-09
Abstract: 1,006,635. Waveguides. HACKETHALDRAHT - UND KABEL - WERKE A.G. April 9, 1963 [April 25, 1962], No. 14120/63. Heading H1W. Frequency-dependent rotation of the plane of polarization of waves propagated in a helically-corrugated waveguide is compensated by using two connected lengths of waveguide having opposite directions of rotation of the corrugations. The change in direction of polarization can thus be reduced to zero, or to any desired magnitude. The connected waveguides are not necessarily of the same diameter; a decrease in diameter enables a reduction in the length necessary for a given compensation. At the transition from one waveguide to the other the corrugations may be reduced in depth, preferably to the value zero, over a certain length towards the transition. The reduction may be continuous or in stages. Where one waveguide is so long that a rotation exceeding 180 degrees or a multiple thereof is produced, only the excess rotation need be compensated.
Patent GB-642456-A (GB)
Title: An improved means for analysing the light reflecting and light scattering properties of a surface
IPC: G01N21/55
Filed: 1948-05-25
Abstract: 642,456. Measuring gloss photo-electrically. CHESTER, C. A., and WIGGINS, TEAPE & CO. (1919), Ltd. May 25, 1948, No. 14121. [Class 40 (iii)] In an instrument for measuring gloss, the surface under test is continuously rotated so as to reflect light from a source at all angles of incidence to a photo-cell which controls the " Y " deflection of a cathode-ray oscilloscope, the time base of which has a repetition frequency bearing a predetermined ratio to the rotational speed of the sample. As shown in Fig. 1, the sample and a standard which may be magnesium oxide are mounted on opposite sides of a rotating plate 3. Light from a source 5 which may be adjusted about the axis of rotation of the plate as indicated by the arrows is reflected or dispersed from each of the rotating plates in turn to a photo-cell 8 which controls the " Y " deflection of a cathode-ray tube 14 via an adjusting potentiometer 12 and the push-pull output stage of an amplifier 13. A contact rotating with the plate 3 supplies a number of lining up pulses on the trace as at 0 degrees, 90 degrees, &c. In use the timebase speed is adjusted by the control 17 with the traces resulting from the standard and the sample appear side by side. The frequency is then doubled so as to superimpose the traces, the resulting appearance of which is shown in Fig. 6. The " X " sweeps controls are then adjusted until the traces just fill the graticule in that direction, use being made of the lining up pulses, and the " Y " gain adjusted until the " standard " trace just reaches a predetermined height on the graticule. Cross-wires 22, 23 are then placed at any desired point on the "standard" trace and the "Y" sweep adjusted by means of the calibrated potentiometer 12 until the " sample " wire crosses this point. The lining up pulses may be used to lock the time base.
Patent GB-898367-A (GB)
Title: Improvements in or relating to a process for the production of pigment preparations
IPC: C09C3/00
Filed: 1959-04-24
Abstract: A process for the production of pigment preparations involving the reduction in particle size of the pigment comprises subjecting a freeflowing suspension of the dry pigment in a solution of a water-insoluble natural or synthetic polymerization or polycondensation product in an organic solvent to treatment in an homogenizing machine operating under pressures between 100 and 250 atmospheres, and drying the product or precipitating the product with water or other solvent the precipitate formed being washed and dried. The rate of homogenization can be accelerated or the homogenizing effect increased by the addition of surface-active substances, e.g. higher molecular amines or higher molecular quaternary ammonium salts.  The product may be cellulose 2 1/2 -acetate, a vinyl-chloride-vinyl acetate copolymer, polyvinyl acetate or collodion cotton.  The organic solvent may be acetone or an alkyl acetate.  A cooling system is preferably employed to ensure that the temperature remains below the boiling point of the solvent or mixture of solvents employed.  Two examples are described, relating to the treatment of lampblack and hexadeca chloro-copper phthalocyanine, respectively.ALSO:A process for the production of pigment preparations involving the reduction in particle size of the pigment comprises subjecting a free-flowing suspension of the dry pigment in a solution of a water-insoluble natural or synthetic polymerization or polycondensation product in an organic solvent to treatment in an homogenizing machine operating under pressures between 100 and 250 atmospheres, and drying the product or precipitating the product with water or other solvent the precipitate formed being washed and dried. The rate of homogenisation can be accelerated or the homogenising effect increased by the addition of surface active substances e.g. higher molecular amines or higher molecular quaternary ammonium salts.  The product may be cellulose 2 1/2 -acetate, a vinyl-chloride-vinyl acetate copolymer, polyvinyl acetate or colloidion cotton.  The organic solvent may be acetone or an alkyl acetate.  A cooling system is preferably employed to ensure that the temperature remains below the boiling point of the solvent or mixture of solvents employed.  Two examples are described.
Patent GB-495838-A (GB)
Title: Improvements in or connected with airscrews
IPC: B64C11/24
Filed: 1937-05-21
Abstract: 495,838. Airscrews. VICKERS (AVIATION), Ltd., and ELLIS, D. L. May 21, 1937, Nos. 14157/37; and 26238 /38, (divided out of 497,048). [Class 114] In an airscrew wherein the pitch angle varies from root to tip of the blade, openings are provided on the upper surface of each blade and near the trailing edge, and extend from the root for a part of the length of the blade and communicate with an inwardly extending duct to a source of suction or depression. The blade a is provided with a series of openings a<1> on its upper surface near the trailing edge, such openings communicating by a central duct all with a hollow boss and thence by openings a<12> with a carrier box b fixed to the engine. The box b has a passage b<1> connected by pipe c with the induction pipe of the driving engine. It may, however, be connected with a suction pump or other means of reducing the pressure. The area of the openings a<1> may be varied by means of shutter e slidable in a slot e<3> to control the opening. This shutter e is guided by pin-and-slot mechanism e<1>, e<2> and is actuated by rod e4 coupled to a screw e<5> movable in a nut member e<6> having an external toothed centre e<9> engaging a control rack e<8>. This arrangement may be used with a fixed or with a variable-pitch propeller.
Patent GB-146695-A (GB)
Title: Improvement in geysers or water heaters
IPC: F24H1/16
Filed: 1919-12-04
Abstract: 146,695. Winterflood, B. W. Dec. 4, 1919. Water-tube boilers.-Two or more coiled pipes A, B, E, F are interwoven so that they form a ring wall of any desired shape round a burner J, such pipes having common headers connected to inlet and outlet pipes C, D, the whole being mounted within a double walled casing with non- conducting filling or a vacuum between the walls. Specifications 13359/94 and 25067/13 are referred to. Reference has been directed by the Comptroller to Specification 148,611.
Patent GB-1389080-A (GB)
Title: Apparatus for the bilateral isotropic and cylindrically  symmetric electron irradiation of objects using energetic  electrons
IPC: H01J37/30
Filed: 1972-03-27
Abstract: 1389080 Electron beam irradiation apparatus ENERGY SCIENCES Inc 27 March 1972 [10 June 1971] 14264/72 Heading H1D Apparatus for irradiating an elongate body with electrons from a plurality of widely different directions includes a plurality of angularly spaced guns with respective electron beam windows arranged around a common axis along which the body may be traversed. Uniformity of irradiation is achieved either-as in the two-gun arrangement of Fig. 2-by shaping the beams 10<1>, 12<1> by a magnetic field produced by appropiately wound toroidal coils A and B, or by an electrostatic field (Fig. 1, not shown), or-as in the five gun arrangement of Fig, 3, by the use of a sufficient number of guns, each of which is provided with a control grid G1, ... G5. The wall portions C1 to C5 constitute water-cooled targets for the receipt of beam electrons not intercepted by the workpiece. Applications referred to include the curing of finishes and moulded products; the crosslinking or vulcanization of plastic or elastomeric sheaths on cable or pipe surfaces; pasteurization; sterilization of air or water; the irradiation of pneumatically conveyed cereal grains or fine suspensions; and the excitation of gasfilled cavities for lamp or laser application.
Patent GB-715324-A (GB)
Title: Improvements in or relating to water heating coils for steam generating apparatus and methods of making such coils
Inventor: ARANT PERRY
IPC: F22B27/08
Filed: 1951-06-15
Abstract: 715,324. Forced-flow steam boilers. CLAYTON MANUFACTURING CO. June 15, 1951, No. 14266/51. Class 123(2) [Also in Group XXII]  A steam-generating pipe coil 35, Fig. 1, for a forced-flow steam boiler comprises steam-generating proper and preheating sections 38, 36 and a section 37 which lines the combustion chamber 20 and encloses the section 38, said section 37 consisting of a double-wound helical coil made of two lengths of pipe 50, 51 interconnected at one end by a return band 52 and the other ends 53, 54 of said lengths being welded respectively to the outlet 45 of the preheater section 36 and the inlet 55 of the generating section 38. In the example shown the coil has sixteen turns, with those in the upper half abutting and those in the lower half spaced slightly apart by clips 56 welded to or inserted between adjacent turns. Winding apparatus for the coil 37 comprises a mandrel 89, Fig. 2, which is rotated by a reversible motor 87a  through reduction gearing 86 and a shaft 88a and is fitted with a clamp 105 provided with fingers 111, 112 adapted to be received within the ends 53, 54 of the pipes 50, 51 to secure the latter to said mandrel. The inner end of the mandrel is provided with a flange 90, and, at the other end, the shaft 88a carries a bushing 91 which is supported in a two-part journal 93, 94 carried by a triangular frame 99 detachably mounted on the base 84 of the  apparatus. The pipes 50, 51, supported by a table 81, are applied to the clamp 105, whereupon the mandrel 89 is driven in a clockwise direction for, say, eight turns. Spacer elements are now inserted between the two pipes and between the pipe 50 and the last wound turn respectively and the winding completed. The clips 56 are then inserted between the spaced turns of the coil, and next the frame 99 is removed from the apparatus, a shell 116 is slipped over the coil until it engages the unwound ends of the pipes 50, 51, which are then connected by the welded-on return bend 52 and bent around the mandrel, whereupon the shell 116 is pushed over the remainder of the coil into engagement with the flange 90. Finally the clamp 105 is released and withdrawn through a slot 108 in the mandrel to permit the coil 37 and surrounding shell 116 to be removed together from the latter. Instead of joining the ends of the pipes 50, 51 by a return bend after winding, this operation may be effected first or, alternatively, a single length of tubing may be bent to provide a return bend with substantially parallel and equal portions on both sides of the latter, the coil then being wound after engagement of the return bend with a clamp on the mandrel. Specification 715,325 is referred to.
Patent GB-1143168-A (GB)
Title: Method of forming hot pressed refractory carbide bodies having shaped cavities
IPC: C04B33/32
Filed: 1967-03-29
Abstract: 1,143,168. Moulding refractory carbides. CARBORUNDUM CO. 29 March, 1967 [29 March, 1966], No. 14285/67. Heading B5A. [Also in Division C7] In a process of forming a hot pressed refractory carbide body having a shaped cavity, an oversize refractory carbide body having an oversize cavity filled with a water reactive carbide forming or containing mixture is hot pressed and the reactive carbide in the cavity is then removed with water. The refractory carbide may be NbC, ZrC, HfC, SiC, TaC or B 4 C and the reactive carbide or former may be CaC 2 +C, Al 4 C 3 +C, Al+C, or Ca + C. The refractory carbide may first be cold pressed and then heated under oxygen in the hot press die prior to hot pressing at 2000‹ C. Alternatively the refractory carbide powder may be pressed in the hot pressing die prior to the hot pressing. The examples describe the method of forming a hollow cored body or a serrated body as shown in Figs. 3 and 6.