baber/WOPTO huggingface dataset:
Patent GB-580977-A (GB)
Title: Improvements relating to directional radio transmitting or receiving systems
IPC: H01Q3/14
Filed: 1941-12-08
Abstract: 580,977. Directive wireless signalling. SPERRY GYROSCOPE CO., Ltd., and NISBET, R. H. Dec. 8, 1941, No. 12807/42. Divided out of 580,975. [Class 40 (v)] An antenna arrangement for producing a rotating beam or for receiving from a variable direction comprises six dipoles 53 each arranged along the focal line of a parabolic reflector 52 mounted on a spider 51 rotatable about an axis 6. A fixed metallic screen 54 is formed with an aperture which allows radiation to be emitted or received only over a useful angle. The antennµ are connected to the transmitter or receiver in succession either by an electronic switch or by a capacity commutator (Fig. 2, not shown). This allows a quicker rate of scanning for a given rotational speed of the apparatus and may be used in the system of obstacle detection described in Specification 580,975. If desired, the units may be axially as well as angularly separated, in which case the antennµ may lie along the axis of rotation and only the reflectors need rotate.
Patent GB-1354375-A (GB)
Title: Apparatus for distributing highly viscous liquids
IPC: D01D1/06
Filed: 1971-05-03
Abstract: 1354375 Melt distribution apparatus BARMAG BARMER MASCHINENFABRIK AG 3 May 1971 [6 May 1970] 12808/71 Heading B5B [Also in Division F2] Apparatus for distributing highly viscous liquids, particularly polymer melts prior to melt spinning, comprises at least one individually disconnectible positive source and a plurality of negative sources or at least one negative source and a plurality of positive sources arranged in at least one ring conduit in such a way that the fall or rise in pressure from each of two adjacent sources of similar type that are in operation to any other source of the other type is different, shut-off members for the/or each negative and positive source being situated in the/or each ring conduit and being adapted so as to allow flow of the viscous liquid in the conduit in both their open and closed positions. In the simplest embodiment of the apparatus (Fig. 1) two positive sources 1 and 2 and one negative source 3 are arranged in ring conduit 4 so that the fall in pressure between positive source 1 and negative source 3 is not equal to the fall between positive source 2 and negative source 3 thus ensuring a flow between sources 1 and 2 as well as from each positive source to the negative source both when one of the positive sources is disconnected (Fig. 2, not shown) and when both are operating. In other embodiments (a) a plurality of positive sources are arranged in one ring conduit and are connected to a plurality of negative sources arranged in a second ring conduit by connecting pipes (Figs. 5 and 6, not shown) and (b) a single positive ( or negative) source is connected to a ring conduit containing a plurality of negative (or positive) sources by as many connecting pipes as there are sources in the ring conduit (Figs. 3 and 4, not shown). The shut-off members are preferably disc valves (see Division F2) which both in their completely open and completely closed position allow flow in the ring conduit. The apparatus avoids the creation of undesirable "dead spaces" inherent in prior art distribution apparatus.
Patent GB-1119817-A (GB)
Title: Anode anchorage for electrolytic cells
IPC: B01J8/06
Filed: 1967-03-20
Abstract: <PICT:1119817/C6-C7/1> An anode anchorage means for an electrolytic cell comprises a cell bottom 10 having a preformed irregularity, and a conductive medium 20, e.g. of lead, copper or alloys thereof, to which are attached a plurality of anode blades 18 e.g. of graphite and at least one bus-bar 12, having one surface shaped to conform to the cell bottom and the irregularity therein, wherein the irregularity, which may be one or more projections (16, Figs. 1 & 3) and/or recesses, is positioned transversely to the direction of the bus-bar, which is preferably embedded in a projection 14 on the conductive medium.  The anode blades may be positioned parallel or transverse to the direction of the bus-bar. The irregularity may be a tongue and groove projection and recess passing through the centre of gravity of the conductive medium; circular, triangular and rectangular irregularities may be used.  The cell bottom may be of concrete or stainless or nickel steel optionally coated with after chlorinated polyvinylchloride, polyvinylidene chloride, P.T.F.E. or ceramics.  The invention is applicable to alkali metal chlorate or HCl cells, or chlor-alkali cells, for electrolysing NaCl, KCl, LiCl, RbCl or CsCl, which may employ asbestos or synthetic fibre diaphragms between the anode blades and cathode figures (not shown).
Patent GB-1474008-A (GB)
Title: Methods of and apparatus for controlling the thickness of an annular extrusion
IPC: B29C48/05
Filed: 1975-03-27
Abstract: 1474008 Controlling eccentricity of extruded cable sheath WESTERN ELECTRIC CO Inc 27 March 1975 [28 March 1974] 12888/75 Heading B5A [Also in Division G3] In a system in which the extrusion of an elongated annular article is controlled in respect of its average wall thickness a signal is also produced in respect of the bore not being truly circular, and control of thickness is inhibited if a decrease in thickness is called for while a non-round signal is present. The object is to prevent the thickness at the thinnest quadrant falling below a minimum. In the embodiment an electric cable 32 has extruded insulation applied at 36. The insulation thickness is measured in four quadrants (top, bottom, left and right) by ultrasonic transducers 42 whose signals are processed at 43 to provide information of the average thickness, the ovalility of the bore (i.e. the cable 32) and the concentricity of the bore. The first two signals are passed to a controller 56 to adjust the line speed, and hence the average thickness, by speed controller 57 and the position of two pairs of rounding rollers 60 which correct any ovalility of cable. The third signal adjusts the position of the cable in cross heads 48 at the entry to the extruder. This position is displayed at 53 and may also be adjusted manually. All positioning is adjusted by stepping motors supplied by pulses derived in analogue/digital circuits using logic elements which are fully described. "Too thin" errors are adjusted by pulses at a high rate and "too thick" by pulses at a slower rate, with a dead band, set as a percentage of the desired thickness, in between. Corrections are effected periodically and errors are determined on an "above or below limit" basis. The line drive 38 may be electrically or hydraulically powered, in the latter case correction is effected by a valve position controller. The logic is such that the average thickness may be increased but not decreased while an ovalility or concentricity error exists or if the signal from any quadrant indicates that this quadrant is below a prescribed minimum thickness. Warning signals are given.
Patent GB-456281-A (GB)
Title: Means for cleaning leather, cleaning and brightening compound for the same, and process and apparatus for the production thereof
IPC: C09G1/08
Filed: 1935-04-30
Abstract: A leather-cleaning compound consists of a fused mixture of 100 parts by weight of ceresin, 60 parts of bleached carnauba wax and bleached montan wax, and 15 of shellac wax and ozokerite, together with colouring matter.  Camphor may be added as an ingredient.
Patent GB-153239-A (GB)
Title: Improvements in and relating to belt pulleys and the like
IPC: F16H55/46
Filed: 1920-05-10
Abstract: 153,239. Brown, H. N. May 10, 1920. Pulleys.-Solid cast or other pulleys are converted into split pulleys by being divided as by saw cuts 3, 5, Fig. 1. The pulley halves 1, 2 are assembled about the shaft 6 and secured together. The ends of the divided rim are connected by plates 7 fastened by countersunk bolts 8. The hub segments 4 are connected by horseshoe-shaped clamps 10, which are attached by set screws 15, 16, passing into spokes 13 and hub 4 respectively, the opening of one clamp being opposite the crown of the other, as shown in Fig. 2.
Patent GB-744847-A (GB)
Title: Seals for preventing the escape of fluid along shafts
Inventor: HORE GEOFFREY DELAFIELD
IPC: F16J15/34
Filed: 1953-05-08
Abstract: 744,847. Stuffing-box substitutes. NAPIER & SON. Ltd., D. May 3, 1954 [May 8, 1953], No. 12956/53. Class 122(5) A fluid-seal for a shaft 2, Fig. 2, passing through a wall 1 which is subject to a pressure differential on its two sides comprises a sealing ring 10 housed in an annular recess 5 in the wall 1 and restricted to limited radial and axial movements relatively to the wall 1, and a flexible diaphragm 17 arranged to divide the recess 5 into two pressure chambers, one of which is open to the fluid on one side of the wall 1 while the other is sealed and receives sealing fluid, such as oil. at a higher pressure than that of the fluid acting on either side of the wall; the sealing fluid passes through at least one passage 21 and then axially along the working clearance between the ring 10 and the shaft. As applied to sealing the shaft of a hydrogen-cooled electric motor, the open chamber receives hydrogen under higher pressure than that of the atmosphere, from the motor housing and the other chamber is sealed against atmospheric pressure by engagement between a flange 12 on the sealing ring 10 and the flange 3 of the recess 5. The flange 12 is pressed against the flange 3 by the resultant of the pressures in the chambers combined with the spring thrust of the resilient metal diaphragm and that of a spring disc 19 or spring fingers which are clamped with the diaphragm to the sealing ring 10 by bolts 16. When the diaphragm is of resilient material, the spring disc need not be provided. The ring 10 is formed in two parts preferably from the same material as the shaft 2 and coated with white metal in the bore and on the bearing face of the flange 12, the parts of the ring being clamped together by bolts 16 and bridge-pieces 13, 14. Rods or bolts (not shown), supported from the flange 3 engage holes or slots in a flange 15 on the ring 10 to restrict movement of the ring. The ring may be made in two ring elements 23, 24, Fig. 3. each comprising at least two parts and the elements are provided with passages 29 for distributing the oil. A clearance (not shown) for the admission of fluid is provided between the ring and flange 4. The detachable abutment 18 for the diaphragm mav be replaced by others of different contour to adjust the forces on the diaphragm. Antifriction metal may also be provided on either or both of the mutually-contacting faces of the abutment and diaphragm. Alternatively the diaphragm 17 may be attached to the flange 4 of the recess 5, Fig. 5, and bear against an abutment 18 on the sealing ring 23. 24. In this case the sealing oil presses the diaphragm towards the flange 3 and the hydrogen acts in the opposite direction.
Patent GB-362316-A (GB)
Title: An improved drop table for railway and tramway vehicles
IPC: B61K5/00
Filed: 1931-05-02
Abstract: 362,316. Hoists with guided platforms. HURST, R., 22, White Grove, Colne, Lancashire. May 2, 1931, No. 12995. Addition to 346,393. [Class 78 (iii).] A drop-table for locomotives &c. of the kind described in the parent Specification is operated by steam or water pressure instead of or in addition to the operating means described in that Specification. Steam from the locomotive or elsewhere passes through a pipe C to a steam chamber A, provided with a safety valve a, pressure gauge a<1> and stop valve D and then passes through a pipe F to a cylinder E containing a piston e<7> connected to the drop-table G. The steam supply to the cylinder E is controlled by inlet and outlet valves e<2> connected by linkage e<3> and controlled by a handle e<5>. The steam escapes from the cylinder through an outlet e<9>.
Patent GB-540996-A (GB)
Title: Improvements in and relating to pulley blocks
IPC: B66D3/16
Filed: 1940-08-15
Abstract: 540,996. Pulley blocks. DEMETRIADES. H. J. Aug. 15, 1940; No. 13042. [Class 78 (v)] In pulley-blocks of the type in which a worm wheel 3 formed integral with a load-lifting pulley 4 is journalled between plates forming a casing and is engaged by a worm on the spindle of which is mounted a chain or like operating pulley, the case consists of a box casting incorporating a rear wall 1, a marginal boundary wall 2, and a cover-plate 6. The casting accommodates also the worm 5 on the spindle 9 of which is fixed the operating pulley 10, which may have a guard 22. The walls 1 and 6 are circular with up-standing extensions 7 between which the worm 5 is arranged, and risers 14 across which extends a bolt 15 to which is fitted a suspension hook 16 located to one side of the medial plane of the casting 1, 2, 6. The plate 6 may be attached to the wall 2 by studs entering lugs 13 on the wall. Holes are formed in the wall 2 to permit passage of the load-supporting chain, and a partition 17 forms an oil-bath compartment for the worm wheel 3.
Patent GB-623800-A (GB)
Title: Improved fastening device for boxes, crates and the like
IPC: B65D45/24
Filed: 1947-05-15
Abstract: 623,800. Box fastenings. HULL MERCHANTS AMALGAMATED BOX CO., Ltd., SHAW, J., and SAUNDERS, C. W. May 15, 1947, No. 13109. [Class 44] A box fastening comprises a two-part band of which one part 3, Fig. 1, embraces the body 1 of the box and the other part 4 embraces the lid 2 of the box. The two parts of the band are joined at one end by a wire loop 6, Fig. 2, and at the other end by a spring tensioned fastening loop 9, Fig. 1. The band parts may be secured to the box and the upper part 4 is formed with lips 11 for engagement by the fastening loops. The loop 9 is of U-shape the limbs being formed to engage the bottom coil of a flat spring 8 housed inside an elongated loop 7 on the lower band part 3. The loop 6 is formed to be inherently resilient and capable of elongation.
Patent GB-831157-A (GB)
Title: A member for assembly in an aperture in a support
Inventor: GREASLEY ERIC ARTHUR
IPC: H02B1/044
Filed: 1957-04-24
Abstract: 831,157. Lamp-holders. CARR FASTENER CO. Ltd. March 7, 1958 [April 24, 1957], No. 13111/57. Class 38 (1). [Also in Group XXV] A member, such as a lampholder, for mounting in an apertured support comprises a tubular body 1 of resilient synthetic plastic, e.g. nylon, formed on its outer surface with a flange 4 at one end and longitudinally extending ribs 5 which taper from a point 9 of greatest thickness adjacent the flange towards the ends of the body. Thus, when the body is snapped into the aperture a', the points 9 on the ribs engage one surface of the support a and hold the flange 4 in engagement with the other face.
Patent GB-768698-A (GB)
Title: Improvements in or relating to shock absorbers for aircraft
Inventor: ORLOFF GEORGE
IPC: F16F9/512
Filed: 1954-05-05
Abstract: 768,698. Liquid springs. BRITISH MESSIER, Ltd. April 12, 1955 [May 5, 1954], No. 13160/54. Class 108(3). A shock absorber comprises a cylinder completely filled with liquid in which works a plunger 23 carrying a damping head 25, and having ports 46, 47, connecting opposed sides of the head 25, and a control member 48 for the ports 46, 47, such as to afford, " linear " damping to slow loadyielding movements of the plunger, and a greater rate of damping for more rapid load-yielding movements. The control member 48 comprises spaced pistons 40, 53 operating in a con centric bore 45 of the plunger 23 disposec between the ports 46 47. The control mem ber 48 also carries a valve head 41 which is loaded by the action of a spring 52 to seat in the mouth of the port 47. The head 41 is formed with ports 61 covered by a valve plate 43 under the action of a spring 44. In operation, on slow compression movement, the valve plate 43 is lifted against the action of the spring 44 and liquid flows through the ports 61 with, " linear " damping. The liquid then flows through ports 50 in the piston 40 of the control member 48 and out through ports 46 to the space below the damping piston 25. On more rapid compression movement, the control member 48 is moved downwardly against the pressure of the spring 52 and damping flow occurs through the ports 50 according to a " square law." On rebound, liquid flows from below the piston 25 to above, via ports 54, under the control of a non-return valve formed by a coiled strip 55. A cylinder 20 is filled with liquid at super-atmospheric pressure through a screw plug 60. The invention may be applied to a helicopter undercarriage similar to that described in Specification 745,915.
Patent GB-1274128-A (GB)
Title: Optical fibre
Inventor: CHAGULOV VLADIMIR SAVVICH
IPC: H01S3/207
Filed: 1970-03-19
Abstract: 1,274,128. Optical fibres. INSTITUT KIBERNETIKI AKADEMII NAUK GRUZINSKOI S.S.R. March 19, 1970, No.13187/70. Heading G2J. An optical fibre has a transparent envelope 2 of lower refractive index than a transparent liquid 1 forming the care of the fibre. It is formed as a capillary filled with liquid either by capillary action or auction. The liquid which may be benzene contains a luminophore, such as a rare earth metal chelate, when the fibre is used in lasers, or a pigment such as chrome or neodymium. The envelope may be molybdenum glass. Two specific examples are given.
Patent GB-131952-A (GB)
IPC: F42B39/08
Abstract: 131,952. Soc. Queron Courbon et Cie. May 25, 1917, [Convention date]. Cartridge belts.-Relates to woven belts of the kind composed of two thicknesses of fabric connected by stitching or binding to form cartridge pockets, and consists in employing a slightly elastic fabric in which the warp threads are made of rubber. The arrangement permits of stretching to a slight extent between successive cartridges during the feeding operation and compensates for any inequality in the spacing of the cartridges in the belt.
Patent GB-1175752-A (GB)
Title: An Overload Clutch for Machine Tools, particularly Lathes
IPC: F16D43/202
Filed: 1967-03-21
Abstract: 1,175,752. Overload release clutch. OERLIKON-BUHRLE HOLDING A.G. 21 March, 1967 [25 March, 1966], No. 13239/67. Headings F2C, F2K and F2L. An overload release clutch comprises clutch members 19, 21 having Hirth-type teeth urged into engagement by a compression spring 38 acting through a sliding member 33, a toggle linkage 32, 31, and a thrust bearing 29, an overload torque causing sufficient axial movement of the member 19 to cause the sliding member 33 to pivot a bell-crank 34 about a fixed pivot 35 so that its arm 36 collapses the toggle, a compression spring 28 then disengaging the clutch and holding it disengaged. The disengaging torque can be adjusted by a screw 39 which loads the spring 38. In a lathe, an input shaft 10 drives the clutch member 19 via gears 11, 12, 14, 15, 17, 18 and a gear 23 formed on the member 21 meshes a gear 24 driving a pinion 26 meshing a rack 27 to move an apron 50 relative to a frame. A gear (51) (Fig. 2, not shown) meshing the gear 15 drives a cross feed mechanism through a second overload release clutch identical with clutch 19, 21. A single lever 46 movable in a cross slot 48, 49 controls normal engagement and disengagement of both clutches. The base 43 of the lever is connected as by link 42 to the centre pivots 41 of the toggles. With the lever 46 at the centre of the cross slot, both clutches are disengaged. Movement to either end of slot 48 engages the clutch 19, 21 for apron movement, and movement to either end of slot 49 engages the second clutch (54) for cross-feed.
Patent GB-132909-A (GB)
IPC: H02H7/22
Abstract: 132,909. Electrical Improvements, Ltd., and Beard, J. R. Oct. 12, 1918. Protective arrangements.-Relates to protective arrangements for high-voltage cables provided with grading sheaths, that is, insulated conducting- sheaths disposed in the insulating-material surrounding the high-voltage core and maintained at a predetermined voltage relative to the core with the object of regulating artificially the distribution of stress in the insulation. According to the invention, a cable of this kind is automatically disconnected from the system, at both ends by the action of the current produced on fault in a conductor connected normally to equipotential points, one on the sheath and the other on a resistance or reactance in which a potential equal to that of the sheath is produced. In the arrangement shown in Fig. 1, to each end of the conductor A, one end of the primary D of a transformer C is connected, the other ends being earthed or connected to neutral, and the secondary windings E being similarly connected to the grading sheath B so as to raise it to the desired potential. The grading sheath is connected (through a relay G at each end controlling the circuitbreakers) to a point F on the primary winding which is normally at the same potential as the grading sheath, and consequently no current flows normally in the relay circuit. In the event of leakage, however, from any part of the cable, the potential of the grading sheath alters, and a current flows through the relay circuits to trip the circuit-breakers. The secondary windings E may be connected between the grading sheath and the conductor. In the arrangement shown in Fig. 2, each end of the conductor is connected to earth through two separate reactances J, J<1> or resistances, the mid-points of which are connected together through the primary K of a transformer, the secondary of which actuates the trip mechanism. The mid-point of the reactance J<1> is connected to the grading sheath to supply it with the grading voltage. In a modification of this arangement, the two parts of the reactances J<1> constitute the primary windings of two separate transformers, the secondaries of which are connected in opposition through the tripping-coil. Instead of two secondaries, a single secondary embracing both transformer cores may be used. The circuit-breaker at one end may be operated through pilot wires from the relay circuit at theother end. To counterbalance the relatively large induced voltage which may appear between the two ends of the grading sheath on heavy fault conditions, the secondary of a transformer the primary of which is energized by the current in the main conductor may be placed in circuit with the grading sheath.
Patent GB-1506843-A (GB)
Title: Display device
IPC: G09F1/06
Filed: 1975-05-16
Abstract: 1506843 Display devices GRAPHIC TREND ASSOCIATES Ltd 16 May 1975 [26 March 1974] 13369/74 Heading G5C A collapsible showcard device consists of a transparent flexible open-ended sleeve 11 into which is inserted a backing member 12 folded from a single sheet of fibre-board to form panels 24, 25, 26, 27 which are first bowed, as shown in Fig. 4, and then inserted, the tension provided by these panels holding sleeve in the rectangular shape of Fig. 1. Pictorial or display matter on the bowed panels is viewed through transparent windows 16, 17, 18, 19 of the sleeve. Member 12 may be modified to provide a triangular section to sleeve 11. Another form comprises a single transparent sheet stretched across a single bowed backing member. The sleeve 11 may also bear display matter, and one or more of the stretched walls may be opaque.
Patent GB-415682-A (GB)
Title: Improvements in or relating to cirouit arrangements comprising a gasfilled electric discharge tube
IPC: H05B41/232
Filed: 1934-05-03
Abstract: 415,682. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. May 3, 1934, No. 13411. Convention date, June 24, 1933. [Class 39 (i).] In a gas-filled discharge tube with an incandescent electrode, a condenser 6 and auxiliary discharge tube 7 in series are connected in parallel with the lamp 1 ; with the inductance 5 the arrangement provides a starting circuit for the lamp, the auxiliary tube 7 ensuring that no discharge takes place across the condenser during normal running the voltage drop across the lamp 1 being then too low. A filling of neon or metal vapour may be used for the lamp ; if sodium the container is made double-walled.