baber/WOPTO huggingface dataset:
Patent GB-1279513-A (GB)
Title: Method of and circuit arrangement for picture transmission in television telephony
IPC: H04N7/14
Filed: 1970-07-13
Abstract: 1279513 Television INTERNATIONAL STANDARD ELECTRIC CORP 13 July 1970 [16 July 1969] 33821/70 Heading H4F In a telephone system also providing vision, pictures are transmitted in both directions over a single line by time division multiplex, each received TV frame or field signal being displayed and stored and the stored signal being redisplayed during the period in which the next frame or field is being transmitted in the other direction. As shown in Fig. 6 at station T1n1 transmitter S1, SVr1 is connected to the line via a two-way switch U1, the switch in its other position connecting a receiver EVr2, E2 to the line, the receiver and transmitter at station T1n2 being connected similarly via a two-way switch U4. The receiving connections e of switches U1, U4 are also connected via switches U6, U5 respectively and delays VZ1, VZ2 to the respective receivers. Discriminating means at the switches U1, U4 respond to clock pulses A and B at the start and finish of the received signal, Fig. 8, to switch to the receiving position when pulse A is received and to the transmit position when pulse B is received and further discrimination means respond to the transmitted signal to switch to the transmit position when pulse A appears on the transmitted signal and to the receive position when pulse B appears. Switch U5 is coupled to U4 so that after the incoming signal has passed to the receiver E 1 it is received again via the delay VZ1. Switch U6 controlling delay VZ2 is coupled to U1 in the same manner. An amplifier ZVp may be included in the transmission line which is switched to the desired direction of transmission by two-way switches U2, U3 controlled by the pulses A, B. A clock generator T reverses the setting of switches U2, U3 if their position has not changed over a predetermined period to prevent blockage of the line. Switches U1, U4 may be controlled similarly.
Patent GB-1071963-A (GB)
Title: Cathode ray tube
IPC: H04N9/26
Filed: 1964-08-19
Abstract: 1,071,963. Cathode-ray tubes. SONY CORPORATION. Aug. 19, 1964 [Aug. 19, 1963], No. 33893/64. Heading H1D. A post-deflection focusing cathode-ray tube having a colour switching grid of parallel wires adjacent its screen, held at such a potential as to produce a focusing action, includes also an electrode located close to and around the edge of the grid, and maintained at such a potential, dependent upon its spacing from the grid, that the focusing action-and hence the spot sizeis uniform over the surface of the screen, and the spot size is a minimum with respect to the electrode potential. A frame 20 (Fig. 6, not shown) mounted in front of a screen composed of multi-coloured phosphor stripes (10) and an aluminium coating (12), supports a grid of parallel wires (11) extending across the screen (Fig. 2, not shown) and cemented to the frame (at 27), together with a shielding and decelerating electrode (13) and an additional electrode (26), which is insulated from the frame and is held at such a potential as to counteract the defocussing effect of the adjacent frame upon electrons passing between the wires of the grid near its edge. Electrode (26) also shields the frame from impact by the electron beam when deflected off the screen.
Patent GB-339511-A (GB)
IPC: G03C7/14
Abstract: 339,511. Luboshez, B. E. Dec. 23, 1929. Colour photography.-The colour filter used with lenticular films comprises several groups of colour bands, and is of such a total width that the image thereof produced by one lenticular element is wider than the element. The overlapping images produced by neighbouring lenticular elements are arranged to coincide. In the form shown, the filter A comprises three groups of colour bands, and has a diameter equal to three times the lens aperture for which the film is normally designed. The image of the filter formed by the lenticular element q is of a width equal to the three elements p, q, s. In a modification, the filter may comprise four groups of bands each of half the normal width. The image formed by an element will then comprise images of two of the groups on the emulsion e behind the element and images of the remaining groups in the emulsion behind the nearer halves of the two adjacent elements.
Patent GB-815394-A (GB)
Title: Improvements in or relating to paper screening tape for high-tension electric cables
IPC: H01B3/00
Filed: 1956-11-08
Abstract: 815,394. Paper for electric cables &c. PIRELLI S.p.A. Nov. 8, 1956 [March 16, 1956], No. 34138/56. Drawings to Specification. Class 96. [Also in Group XXXVI] Paper screening tapes for electric cables comprise two superposed layers, one insulating and the other conductive, the latter consisting exclusively of cellulose fibre pulp having an electrically conductive powder such as carbon black incorporated therewith. The insulating layer may comprise cellulose fibre pulp or a coating of varnish or plastic material. The tapes may be made by bringing into intimate contact two layers of cellulose fibre pulp, one loaded with conductive powder, and then pressing them between suitable rolls so that they become integrated.
Patent GB-621891-A (GB)
Title: Process for the nitriding of high chromium ferrous alloys
IPC: C23C8/26
Filed: 1946-11-18
Abstract: High chromium ferrous alloys are nitride hardened by heating at nitriding temperature in contact with one of the metals aluminium, calcium, magnesium and silicon or with mixtures or alloys of two or more of these metals in the presence of a gas which liberates nitrogen and hydrogen.  The metal or alloy, e.g. Cu-Si or Si-Al may be in a finely divided state, for example, passing a 300 mesh screen and may be applied by spraying.  Ferrous alloys of the 18-Cr, 8 per cent Ni type may be treated at 475 DEG  to 600 DEG C. with ammonia after a part has been sprayed with aluminium; only the sprayed part is hardened, the remainder being in its original state. Specifications 345,659, 374,097, 610,953 and 621,890 are referred to.
Patent GB-1075743-A (GB)
Title: Diagnostic test pack
IPC: G01N30/94
Filed: 1964-08-20
Abstract: A diagnostic test pack for determining phenylalanine in blood (e.g. for detection of phenylketonuria) comprises an absorbent carrier strip to which serum to be tested may be applied and a developer comprising 0.3-1.0% ninhydrin dissolved in the separated upper layer formed when butanol and aqueous acetic acid are mixed and allowed to stand.  The carrier is preferably paper, but any bibulous material, e.g. made of cellulose, modified cellulose, polyvinyl chloride, or glass fibres may be used.  In use, a serum containing a known amount of alanine is preferably spotted, with the serum to be tested, on the test strip, the sera allowed to dry, and the spots developed by ascending, descending, circular, disc or radial chromatography. After development and drying, the colour intensity of the furthest advanced spots, is compared.
Patent GB-1353626-A (GB)
Title: Preparation of subterranean cavities
IPC: E21D13/00
Filed: 1971-07-21
Abstract: 1353626 Blasting DOW CHEMICAL CO 21 July 1971 [29 July 1970] 34239/71 Heading E1F A subterranean cavity of a required size and shape is created at a required depth underground by sinking from the surface of the ground to at least the depth at which the floor of the cavity is desired a pattern of boreholes that permits, when the matrix surrounding the boreholes and within the boundaries of the desired cavity is shattered by detonation of explosive loaded into a sufficient number of the boreholes over a height equal to the desired height of the cavity, removal of the shattered matrix from the created cavity either upwards to the surface or downwards into the portions of boreholes beneath the cavity. (For Figure see next column)
Patent GB-443949-A (GB)
Title: Improvements in or relating to anti-vibration fittings for electric lamps and the like
IPC: H01R33/975
Filed: 1935-12-11
Abstract: 443,949. Resilient supports. HART, R. J., 37, Engayne Gardens, Upminster, Essex. Dec. 11, 1935, No. 34287. [Class 108 (iii)] [See also Groups XI and XXXVI] A holder A for an electric lamp &c. is suspended in a frame E bv means of two helical springs C, passing loosely through parallel holes in the holder and held horizontally in tension across the lower rim of the frame. The holder is located at the centre of the springs as by means of clips D inserted between the coils of the springs.
Patent GB-988581-A (GB)
Title: Improvements in and relating to pipe coupling devices
IPC: F16L33/12
Filed: 1961-09-25
Abstract: 988,581. Clamp fastenings. H. MUCHER. Sept. 25, 1961 [July 18, 1961], No. 34336/61. Heading E2B. [Also in Division F2] A pipe coupling device comprises a resilient coupling strip 12 secured by one face thereof to a frame which when laid flat is rectangular, end regions of the longer sides 13 of the frame being provided with co-operating parts of a lever locking means, the arrangement being such that the strip can be tightened round a pipe by engagement and operation of the locking means. The frame consists of four members, the two longitudinal sides 13 and two transverse members 14 and the quick action lever locking means each consists of a lever 21 pivoted at one end to a bracket 19 attached to one end of the members 13, the lever 21 having a hook member 22 pivoted to it intermediate its ends, the hook lever being adapted to engage either of two bars 23 carried by a bracket 20 which is secured to the other end of the member 13. The surface of the strip 12 which faces the pipes is provided with a longitudinal channel of triangular cross-section.
Patent GB-1525251-A (GB)
Title: Devices for the recording and reproduction of x-ray image
IPC: G03G15/22
Filed: 1975-08-19
Abstract: 1525251 Xeroradiographic apparatus SIEMENS AG 19 Aug 1975 [6 Sept 1974] 34352/75 Heading G2X Apparatus for recording X-ray surface deformation images comprises (1) an X-ray source to transmit X-rays via an object on to an electrophotographic member, (2) a housing containing the member which comprises an X-ray transparent electrode, a Se layer 150-300 microns thick and a heat-deformable thermoplastic layer and means to charge the member on its thermoplastic layer, (3) heating means to develop a surface relief image on the member, and (4) a light source, an optical system and a screen to project the image for display. The optical system preferably comprises a Schlieren system and a semi-transparent reflector. Preferably a dielectric layer is provided between the Se layer and the thermoplastic layer and the electrode layer also acts as the heating means. An improved image may be produced (1) by recharging and reheating, (2) producing a grid pattern on the thermoplastic layer prior to exposure, e.g. by using an interference pattern from 2 laser beams, and using a filter in the Schlieren system to remove the grid pattern or (3) placing an X-ray absorption grid in the exposure path to form the grid pattern which is removed on read-out as in (2).
Patent GB-334130-A (GB)
Title: An improved pencil sharpener
IPC: B43L23/06
Filed: 1929-11-12
Abstract: 334,130. Lips, E. Nov. 12, 1929. No Patent granted (Sealing fee not paid). Pencil sharpeners.- A pencil sharpener employing used safety-razor blades comprises a flat horse-shoe shaped body a, the limbs of which are bent over to form a holder c for the razor blade b and are formed with holes which correspond tn those in the razor blade to receive fixing screws &c. The body a is preferably made flat and of resilient sheet metal, and the limbs may be formed with one or more cross-pieces d. In an alternative construction instead of bending over the limbs a separate double T-piece is provided.
Patent GB-774367-A (GB)
Title: Improvements in or relating to apparatus for cleaning coal
IPC: B07B13/00
Filed: 1955-12-02
Abstract: 774,367. Sorting solid materials..SHEPPARD, WELDEN & CO., Ltd., and BERRISFORD, W. H. Dec. 2, 1955, No. 34519/55. Class 117. Coal cleaning apparatus of the type comprising an inclined jigger which feeds the coal on to a glass plate whereby the coal bounces off the plate and is separated from dirt which slides down. the plate, is characterized by the provision of a platform intermediate the jigger and plate which is inclined to the horizontal at a greater angle than the jigger, and oscillates in synchronism with it and in opposition thereto. A three stage machine is shown, and is fed with coal from a shoot 20 and, at the first stage, the coal passes from a jigger 17 to a platform 21 and then on to a glass plate 24. The jigger is supported on pivoted links 15, 16 and is reciprocated in an approximately horizontal plane by a connecting rod 18 attached to an eccentric mounted on a shaft 11 driven by a motor 13. Pivoted brackets 22 carry the platform 21 which is reciprocated in directions opposite to that of the jigger by a tie bar 23 connected to the link 16. The plate 24 is mounted between side plates 26 and is supported by an eccentric 25. In operation, clean coal passes to the shoot 27 and the remainder of the feed drops into a jigger 28 of the second stage. The second jigger is mounted on pivoted links 29, 30 and is oscillated by a rod 31 also driven from an eccentric on the shaft 11, and material therefrom passes to a secon glass plate 34 via a platform 32, and to a secondary clean coal shoot 36. The platform 32 is driven by a tie rod 33 from the link 30. Dirt &c. passes to a third stage jigger 37 supported on links 38, 30a, and flows from a platform 39 to a third glass plate 41 mounted above a dirt conveyer 43. A shoot 44 conducts clean coal to a conveyer 45 which feeds it back to the jigger 17. Platforms 32, 39 are carried by brackets 40. As the material passes along the jigger 17 fines pass through a mesh plate 46 into a duct 47 and on to the conveyer 45. A suction head 48 adjacent the mesh plate is connected to an air extractor 49 and prevents the flow of dust into the atmosphere. Further suction heads 50, 51 and 52 are arranged adjacent each jigger.
Patent GB-501858-A (GB)
Title: Improvements in transmitting stations for distant control systems
IPC: F41G11/00
Filed: 1937-12-13
Abstract: 501,858. Electric control systems; telescopes. GRANAT, E., and COMPAGNIE DES FORGES ET ACIERIES DE LA MARINE ET D'HOMECOURT. Dec. 13, 1937, No. 34520. Convention date, Dec. 31, 1936. [Class 40 (i)] [Also in Group XX] A telescope 7 mechanically coupled to the transmitters 5, 2 of electric systems for altitude and azimuth control of searchlights &c. is under. the joint control of attendants. who move it in accordance with information received from a sound-detecting station, and of the observer. Fine adjustments are made mechanically by means of handles 73, 80 controlled by the attendants and handles 37, 20 controlled by the observer. Coarse adjustments are made by means of handwheels 72, 83 controlled by the attendants and of a member 36, controlled by the observer, which can be moved vertically or horizontally. These, by a brush-adjusting. movement in machines 4, 3 which are coupled mechanically and electrically to the transmitters 5, 2, cause the whole system to run continuously at a speed depending on the extent of the brush displacement as described in Specification 267,100, [Class 38 (iii)]. As shown, the observer's seat takes part in the azimuthal movement. Pointers geared to the telescope co-operate with apparatus 69, 70 to facilitate control in accordance with the indications from the sound-detecting station. Differential gearing arrangements prevent interference with the altitude control by movements in azimuth of the telescope turret 30. Further differentials permit dual control, without interference by rotation of the turret, of the brush shifting arrangements. The observer may also control gun-firing mechanism or a searchlight shutter by a hand- or foot-controlled switch.
Patent GB-176502-A (GB)
Title: Improvements in and relating to valve grinding machines
IPC: B24B15/00
Filed: 1920-12-07
Abstract: 176,502. Branning, W. F. Dec. 7, 1920. D i s c apparatus; round holes, trueing.- A valve-seat grinding- machine comprises a grinding-disc 5 on a spindle 1. which is ro. tated by gears 11, 22. A sleeve 7 having a coned end 9 surrounds the spindle 1 and is threaded to engage a nut 14, which bears on a body formed of members 15, 16. Expansion standards 24, pivoted to hooks 17 on the inside of the member 16, pivotally carry clampmembers 26, which contact with the cone 9. Rotation of the nut 14 forces the clampmembers 26 downwards and outwards to grip the valve casing. A split nut 31, 38 engaging the upper end of the sleeve 7 and embracing a collar 34 on the spindle 1 adjusts the pressure of the grinder on the valve seat. Thegrinder 5 has a bush engaging a thread on the end of the spindle 1, and a washer 6 is held against the grinder by a screw 4. Grinding-discs of various shapes may be used, such as shown in Fig. 5.
Patent GB-177211-A (GB)
Title: Improvements in or relating to dyeing, bleaching, tin weighting, scouring and the like machines
IPC: D01D10/04
Filed: 1920-12-08
Abstract: 177,211. Leek & Sons, Ltd., C., and Leek, H. Dec. 8, 1920. Hank type. - In hank - dyeing machines &c., the hanks are carried by porcelain, wood, vulcanite, or non - corrodible metal reels e, which are of cross shape in cross-section, so as to provide deep circumferential grooves into which the treatment liquor is carried. The reels are secured to spindles rotated in a metal plate or carrier c, which is raised and lowered to move the hanks into and out of the treatment liquid in the vat b by means of chains v operated by a windlass or by racks and pinions. The reel-carrying spindles are each provided with chain pulleys, so that they can be rotated at all positions of the carrier by means of an endless chain, the chain pulley at one end of the machine being formed with or secured to a worm-wheel meshing with a worm splined on a vertical shaft m driven bv bevel-gearing from a transverse shaft. This shaft may be driven by means of open and crossed belts, the strapfork being so controlled that the direction of drive is reversed periodically. The Specification refers to the dyeing, bleaching, tin-weighting, and scouring of artificial silk, and the Provisional Specification refers to silk, worsted, woollen, and cotton skein yarns, straw-braid, or the like.
Patent GB-1190832-A (GB)
Title: Optical Beam Separator for Colour Television
IPC: H04N9/097
Filed: 1967-07-28
Abstract: 1,190,832. Colour television. SOC. D'OPTIQUE, PRECISION, ELECTRONIQUE ET MECANIQUE. 28 July, 1967 [5 Aug., 1966], No. 34802/67. Heading H4F. [Also in Division G2] An optical beam separator, as shown, particularly for three-colour television, gives rise to red, blue, green images 30, 27, 28 respectively in the same plane. An incoming white light beam is split by a dichroic coating on a face 2 of an entry prism 1. Blue light is reflected by the coating to another face of the entry prism and thence through a second prismatic element 13 and a path equalizer 18 to form the image 27. The transmitted light passes through an air gap 5 to a dichroically coated surface 5a of a second intermediate prism 4, this surface reflecting the green light through a first prismatic element 6 to form the image 28. The red light is transmitted through the surface 5a and reflected upwards, eventually forming the image 30 downstream of a roof prism 24.
Patent GB-949248-A (GB)
Title: Improvements in or relating to voltameters
IPC: G01T1/15
Filed: 1961-09-28
Abstract: 949,248. Dosimeters. P. PYCHLAU, and H. PYCHLAU, [trading as PHYSIKALISCHTECHNISCHE WERKSTATTEN DR. PYCHLAU KOMM.-GES.]. Sept. 28,1961 [NOV. 8, 1960], No. 34922/61. Heading G1A. [Also in Divisions G4 and H3] X-rays falling on ionisation chamber 1 cause electrode 2 to charge up, normally conducting photo-diode 3 passes a constant charging current to capacitor 4, and when the latter reaches a predetermined voltage, trigger 5 operates to supply a pulse to a counter (not shown) and to transistor 11 which thereupon conducts for the duration of the pulse and shorts out lamp 9 so that no charging current flows through diode 3 while capacitor 4 is being discharged by trigger 5. The cycle is repeated for as long as the voltage of electrode 2 is above the threshold level of diode 3, the counter thus accumulating a number representing the total radiation dose. To cope with high radiation dose rates, Zener diode 6 and storage capacitor 7 are provided. When the voltage of electrode 2 exceeds the breakdown voltage of diode 6, capacitor 7 is charged, and it subsequently discharges into capacitor 4 through diode 3 when the dose rate falls to a sufficiently low level. The arrangement 3, 9,11 may be replaced by a pentode value, Fig. 2 (not shown) or by an ionisation chamber subjected to radiation, or by a variable resistance controlled by a motor which is, in turn, controlled by the pulse rate from trigger 5 to maintain a constant charging current.
Patent GB-821943-A (GB)
Title: Improvements in or relating to automatic screw drivers
IPC: B25B23/10
Filed: 1955-12-06
Abstract: 821,943. Screwing-up screws. SCHMITT, H. Dec. 6, 1955 [Dec. 6, 1954], No. 34966/55. Class 83 (3). An automatic screw-driving device comprises guides for centring the screw-shank. In operation, with the casing 5 secured by the bayonet joint 6 to the motor 4 and with the motor rotating the screw-driver 1 and bit 32, a screw 33 is inserted manually or from a magazine through a slot in a sleeve 22. A sleeve 8 is then drawn rearwardly by a hand-grip 10 until pins 11 on the grip meet the ends of slots 12 in the casing. The sleeve 8 carries with it the sleeve 22 containing balls 35 which grip the screw as it abuts the bit 32. As the screw is gripped, the movement of the sleeve 22 is checked, but the sleeve 8 continues its movement, thus compressing a spring 28 and spring-pressed pins on a sleeve 17 engage behind a collar 15 to retain the grip in its upper position. The screw is then driven into the work. As the screw advances, a sleeve 38 is pushed back against a spring 42 until the balls 35 enter an enlargement 38b therein and release the screw. As the casing 5 moves towards the work the retaining pins are engaged by a collar 29 on the sleeve 22 and are released, thus also releasing the hand-grip and sleeve 8. A spring- pressed ball, in the sleeve 22, assists in guiding the screw-head between the balls 35. Instead of balls 35, rollers may be provided. The sleeve 38, Fig. 6, has three sets of recesses 49a-49c, 50a-50c and 51a-51c engageable by the balls 35 so that, by indexing the sleeve round by a pin 41, screw shanks of different sizes can be gripped. For screws of different lengths different bits 32 are screwed into the end of the screw-driver 1.