baber/WOPTO huggingface dataset:
Patent GB-1406820-A (GB)
Title: Lasers
IPC: G02F1/29
Filed: 1972-09-28
Abstract: 1406820 Lasers SIEMENS AG 28 Sept 1972 [17 Dec 1971] 44757/72 Heading H1C A laser with a directionally-controlled output beam 7, Fig. 1, comprises a laser resonator formed by mirrors 2, 6 which contains an active medium 1 and an apertured mirror 3, the apertured mirror and one resonator mirror 6 together forming a subsidiary resonator 11 in which a controlled diffraction device 5 determining the beam direction is located. The diffraction device may be a controllably-excited electro-optic or acousto-optic crystal with a phase or amplitude grating, the device being located at the focus of confocal mirrors 3 and 6. Beam 7 is spilt out of the resonators through a cut out portion of mirror 6, Fig. 2 (not shown), and its direction is determined by that diffraction order of the device 5 which is spatially related to the cut out portion. The zero diffraction order is reflected back to the active medium through the aperture 4 in mirror 3 from a central reflecting portion of mirror 6. In a modification, Fig. 4, lenses 8, 9 are located at the focal points of mirrors 3 and 6 to provide a parallel beam through the diffraction device. The laser active medium and the device 5 may be positioned with their optical axes inclined at the Brewster angle to the subsidiary resonator axis. The laser active medium may be Nddoped YAG rod or He-Ne, and the diffraction device may be an α-HlO 3  or PbMoO 4  crystal or KTN (potassium tantalate niobate).
Patent GB-1221580-A (GB)
Title: Apparatus and process for cracking of hydrocarbons to a product having a high ethylene content
Inventor: CIJFER HARTOCH JOSEPH
IPC: C10G9/00
Filed: 1968-09-20
Abstract: 1,221,580. Ethylene. SELAS OF AMERICA (NEDERLAND) N.V. 20 Sept., 1968, No. 44765/68. Heading C5E. A hydrocarbon feed (Fig. 1) is cracked to ethylene in furnace 2, the product gas cooled by about 200‹ C. in a pre-cooler 3, and then further cooled in one or both of after-coolers 5A and 5B connected in parallel. All the coolers are indirectly water-cooled and generate high-pressure steam. The connection between the furnace outlet and the pre-cooler, and the pre-cooler itself, have such dimensions that the total residence time of the product gas therein is 0À005-0À01 sec., and the pre-cooler has such a capacity that it may lower the product gas temperature to at least the maximum operating temperature of the supply valves 4A and 4B of the after-coolers, e.g. to below 700‹ C. The pre-cooler is suitably a straight-flow tube heat-exchanger having at the supply side a distribution cone containing an expanding bundle of tubes, e.g. as in Fig. 2. A cooling medium, e.g. steam, may be supplied between the pre-cooler exit and the inlet valves of the after-coolers. For cracking gas oil or heavy naphtha only one after-cooler is on-stream while the other is cleaned, but for cracking light naphtha both after-coolers may be on-stream to provide the extra cooling capacity needed.
Patent GB-1487162-A (GB)
Title: Flux valve heading repeater
IPC: G01C17/30
Filed: 1975-10-31
Abstract: 1487162 Flux valve compasses SPERRY RAND CORP 31 Oct 1975 [2 Dec 1974(3)] 45119/76 Divided out of 1487161 Heading G1N The description is identical with that of the parent Specification 1487161. The claims relate to the means for correcting for index angle error.
Patent GB-1362982-A (GB)
Title: Apparatus for mating fabric workpieces
IPC: D06H1/02
Filed: 1971-05-28
Abstract: 1362982 Sheet ordering apparatus FARAH MFG CO Inc 28 May 1971 [9 June 1970] 45189/72 Divided out of 1362981 Heading B8R Superimposing sheets.-A fabric workpiece 10 moved by rollers 51 to a first position (as shown in Fig. 3) where it is stopped by a fixed barrier 233 is superimposed on a second workpiece (not shown, but travelling parallel to the first along rollers 51 to a second position where it is stopped by a movable barrier 242), by a pneumatically actuated rake 234, 236 which engages the piece 10 to slide it transversely up an incline 240 to fall upon the second workpiece. The presence of both workpieces is detected by photo-cell devices connected to an electrical control system (Fig. 5, not shown) which controls the operation of the rake to mate the pieces and subsequently lowers barrier 242 and a feed wheel 250 to move the superimposed workpieces towards a sewing machine (301, Fig. 1, not shown). Turning over sheets.-The pieces 10 are supplied from a stack in which the face sides of consecutive pieces lie in opposite directions. A device (Fig. 2) is provided to turn over alternate pieces 10 while they are travelling towards the fixed barrier 233. The device comprises a 'U'-shaped rod or stirrup carried on a bar 209 movable vertically by a pneumatic actuator 210 and a fixed bar 214 provided with a cushioning pad 216. The horizontal portion of the stirrup is initially below the level of the tops of conveyer rollers 201 to permit passage of pieces 10. Photo-cell devices 202, 204 detect the presence of each piece in turn and operate a stepping relay (656) to energize actuator 210 as alternate pieces 10 pass therethrough. The stirrup then rises to lift the leading edge of the alternate piece and trap it against the pad 216 while its trailing edge is swept below by rollers 201 to become the new leading edge of the turned over piece. The stirrup is then lowered to release the trapped edge and the piece 10 proceeds towards barrier 233 with its face side uppermost. The rollers 201 are covered with a suitable elastomeric material such as silicon rubber.
Patent GB-1029969-A (GB)
Title: Improvements in or relating to data-storage devices
IPC: G11C15/00
Filed: 1962-11-30
Abstract: 1,029,969. Matrix stores. HONEYWELL Inc. Nov. 30, 1962 [Nov. 30, 1961], No. 45433/62. Heading G4C. A matrix store comprises for each bit a dynamic recirculation storage element, and row and column selectors for presenting input data, one bit to each element of a row and sequentially selecting columns of the matrix. As shown, the matrix has 15 columns and 8 rows, the " edge " lines and " corner " elements only being illustrated. Storage element S1, for example comprises amplifier 30, recirculation gate 28 and input gate 26. The bit stored is normally recirculated, but address selector 56 may close 28 and open 26 (and all other corresponding gates in the same column) to allow data presented at I1-I8 to be entered bit-by-bit into column 1 as commutator 55 energizes lines TB1-TB8 in turn. At the same time the column of data previously stored is transferred via gates such as 70 to output buffer X1-X8, which also consists of recirculation bit stores. Individual input and output lines such as S1, SO are also provided.
Patent GB-1441744-A (GB)
Title: Photocathodes
IPC: H01J1/34
Filed: 1972-10-03
Abstract: 1441744 Photocathodes MARCONI CO Ltd 31 Aug 1973 [3 Oct 1972] 45440/72 Heading H1D A photocathode comprises a plurality of doped semi-conductor elements supported by a Au grid. The photocathode is made by epitaxially growing a P-type layer 12 on a P-type substrate; forming a P<SP>+</SP> diffusion layer 16 in layer 12 and adding a Au layer 18 with an intermediate layer of Cr or Mo to improve adhesion. Windows are etched in the metal layer and filled with SiO 2 , 20. A further Au layer 22 is added to the remaining grid 18; the substrate is removed by etching and layers 12, 16 divided into island elements.
Patent GB-988745-A (GB)
Title: Sunlight duration measurer and shadow tracer
IPC: G01C21/02
Filed: 1962-12-03
Abstract: 988,745. Investigating shadows cast by the sun. G.P.WOODFORD. Dec. 2, 1963 [Dec. 3, 1962], No. 45706/62. Heading G1F. [Also in Division G2] Apparatus for investigating shadows cast by the sun due to a particular building, or whether a particular point will be obscured from direct sunlight by a nearby building comprises a torch 1 adjustably mounted on a column 4 by a sleeve 5 in which the torch is rotatable. The torch is also provided with an adjustable mirror 2 on which the torch is adapted to throw a pencil of light. The apparatus is used in connection with architectural layout plans, a point V on the base of the column 4, and directly below the centre of the mirror 2 being placed at the point to be investigated. The torch is set so that it directs a beam of light downwards at an angle equal to the latitude of the point, and the mirror is set to deflect the beam through an angle equal to the complement of the declination of the sun. The torch 1 is rotated in the sleeve 5 in accordance with the hour of the day. The use of the apparatus is described in detail in the Specification.
Patent GB-1132454-A (GB)
Title: Process for spinning fibre forming polyesters
Inventor: RATH HERMANN
IPC: C08J3/205
Filed: 1965-10-28
Abstract: 1,132,454. Pigmented polyesters. VICKERSZIMMER A.G. PLANUNG UNDBAU VON INDUSTRIEANLAGEN. 28 Oct., 1965, No. 45737/65. Heading C3R. Pigmented polyester fibres are obtained by a melt spinning process wherein a dispersion of the pigment in an alkyl, aryl or alkaryl phosphite which is liquid at room temperature, is a plasticizer for the polyester and has a boiling point above the spinning temperature is thoroughly mixed with the molten polyester immediately prior to spinning. Specified pigments and phosphites are TiO 2 , ZnO, BaSO 4 , BaCO 3 , CaSO 4 , Al 2 O 3 , iron, chrome and selenium oxides, lead chromate, cadmium sulphide, soot and phthalocyanine and trinonylphenyl and didodecylphenyl phosphites. In the example the polyester is polyethylene terephthalate.
Patent GB-996994-A (GB)
Title: Improvements in or relating to bearings
IPC: F16C33/06
Filed: 1962-12-04
Abstract: 996,994. Bearings. KARL SCHMIDT G.m.b.H. Dec. 4, 1962 [Dec. 27, 1961], No. 45868/62. Heading F2A. A bearing assembly has a non-rotating member with a bearing surface which in cross-section deviates from a circular shape and which provides two points of minimum radial clearance for a rotatable member, the two points of minimum radial clearance being at opposite ends of a diameter of said rotatable member and the diametral line connecting said two points being tilted about the bearing centre out . of the plane of the maximum bearing load in the intended direction of rotation of said member at an angle Y between 8 and 60 degrees. The non-rotating member may be either the shaft or the bearing. In an embodiment, the bearing comprises two bodies G 1 , G 2 , Fig. 1, having a cylindrical bore therethrough which receives a bush B, the bearing surface L of which is substantially elliptical in cross-section. The bush B is located in the bearing so that its minor axis a is tilted at an angle Y to the direction P of the load on the bearing. In a modification as shown in Fig. 2, the bush is split into sections H 1 , H 2 , which are assembled so as to provide a non-continuous bearing surface and wedge-shaped lubrication gaps.
Patent GB-1244013-A (GB)
Title: Fabrication of semiconductor devices
Inventor: ENGELER WILLIAM ERNEST
IPC: H01L23/29
Filed: 1968-09-27
Abstract: 1,244,013. Semi-conductor devices; printed circuits; capacitors. GENERAL ELECTRIC CO. 27 Sept., 1968 [13 Oct., 1967], No. 46117/68. Headings H1K, H1M and H1R. The Specification relates to metal layers on passivated semi-conductor surfaces. A metal layer is formed over a layer of passivating insulation and is then enclosed by a second layer of insulation through which extends a means for making contact to the metal layer. The metal and the insulators are so chosen that the structure may if necessary be processed at, for example, normal inpurity diffusion temperatures without their mutual reaction. The metal may be tungsten or molybdenum, and the insulator may be silicon dioxide, silicon nitride, or silicon oxynitride. The semi-conductor substrate may be of silicon, germanium, or gallium arsenide. The buried metal film maybe the gate electrode of an IGFET or a cross-under connector for circuitry on the upper surface of the second insulating layer, or two superposed buried metal films separated by insulation may be provided to form a capacitor or transmission line. Processing details are given. Contact to the buried metal film is provided by deposited aluminium.
Patent GB-1341134-A (GB)
Title: Composition and process for colouring nickel olefinic polymers
IPC: D06P1/653
Filed: 1971-10-04
Abstract: 1341134 Dye compositions CROMPTON & KNOWLES CORP 4 Oct 1971 [5 Oct 1970] 46126/71 Heading D1B Dye compositions comprise 2 to 12 parts by weight of an aromatic ortho monohydroxy carboxylic acid and 1 part by weight of a compound of formula I in which M is H, K, Na, ¢Mg, ¢Ca, ¢Mn, or ¢Ba and B is an azo coupling component free of water-solubilising groups. Preferred acids are salicylic acid, and o-hydroxynaphoic acids. The compositions are used for dyeing and printing nickel modified olefinic polymers, e.g. polypropylene at pH valves below 5.
Patent GB-1372074-A (GB)
Title: Method and device for regulating the wall thickness of products manufactured from synthetic materials
IPC: B29C48/10
Filed: 1971-10-05
Abstract: 1372074 Controlling extruded tube wall thickness INDUSTRIELLE ONDERNEMING WAVIN NV 5 Oct 1971 [5 Oct 1970] 46255/71 Heading B5A [Also in Division G3]  The wall thickness of an extruded polyvinyl extruded material tube 16, being extruded from a single or twin screw extruder 3, is automatically controlled to a desired value by differential heating and cooling of the heat plasticized material flowing through the die, effected by control means responsive to deviations from a predetermined wall thickness sensed by feelers 8a to 8d downstream of the die. The wall thickness of the tube may be maintained constant along its length, may be varied to produce different wall thickness along the length, e.g., and the tube may then be increased in diameter where of greater extruded wall thickness to produce a constant wall thickness, or the extruded mass may be circumferentially regulated to extrude a curved tube of circumferentially uniform wall thickness. The differential heating may be effected by electrical resistance heaters, but in the described embodiment the die 7 and/  or mandrel 6 comprises circumferentially extending sectors 7a to 7e each having adjacent channels 9, 10, respectively, for the circulation of hot oil at temperatures respectively below, e.g. at 150 C., and above, e.g. at 190 C., the temperature, e.g. 180. C., of the polyvinyl chloride being extruded, which is measured by sensors 12a to 12e, the oil being circulated through channels 9 and 10, respectively, to decrease and increase the extruded tube wall thickness. The feelers 8a-8d act via an electric operating member to control the liquid circulation in the channels, and the sensors 12a to 12e act, via a regulator, to signal an oil heating device. The extruded tube is drawn by constant speed rollers 13a, 13b, through a vacuum sizing die 14, and a water cooling spray 15.
Patent GB-1082538-A (GB)
Title: Improvements in or relating to cross-heads for extruders
IPC: B29C48/06
Filed: 1964-11-13
Abstract: 1,082,538. Extrusion cross-head dies. N. OKAZAKI. Nov. 13, 1964, No. 46425/64. Heading B5A. To obtain a uniformly cross-sectioned tube of synthetic plastic or rubber, or sheathing of the same material for a wire 10, an extrusion crosshead 1 is provided with a rotatable core tube 9 and a stationary sleeve 4 having helical grooves 5, 5<SP>1</SP>, the bottom surfaces of which diverge with respect to the longitudinal axis of the crosshead in a direction towards die 8 such that the difference of flow path across each groove is compensated for. For example, considering groove 5, one path a, b, i, j and f is two turns in length while path c, d, k and l is one and a half turns in length. A single helical groove only may be provided, Fig. 5 (not shown), and an auxiliary screw (20), Fig. 4 (not shown), may be provided on the core tube adjacent the die to assist the feed and allow the cross-head to be emptied of moulding material. In a further embodiment, Figs. 6-8 (not shown), two wires (16, 16<SP>1</SP>) are coated simultaneously and subsequently twisted to form a single strand (19) by rotation of die (7) having apertures (13, 13<SP>1</SP>) and a core tube having bores (11<SP>1</SP>, 11<SP>11</SP>).
Patent GB-953937-A (GB)
Title: Pipette
IPC: G01N1/14
Filed: 1961-12-28
Abstract: 953,937. Pipette assemblies. M. C. SANZ. Dec. 28, 1961 [Jan. 6, 1961], No. 46514/61. Heading BIX. [Also in Divisions B8 and F2] A pipette assembly comprises a deformable reservoir, a chamber above the reservoir, communication means therebetween, a measuring tube of predetermined length and cross-sectional area mounted in said chamber with an inner portion extending within the chamber and an outer portion extending therefrom, the inner portion being bent so that the inner end opens downwardly towards said reservoir, said chamber including means above the level of the inner end of the measuring tube for opening the chamber to the surrounding air, and means preventing escape of liquid from the reservoir to the atmosphere so that application of pressure to the reservoir forces liquid therefrom into the chamber and, when the means for opening the chamber to the surrounding air is closed, into the measuring tube. On subsequently opening the chamber outlet, liquid is retained in the measuring tube and surplus liquid in the chamber flows back into the reservoir, and on closing the chamber outlet and re-applying pressure the measured sample of liquid is delivered. In the apparatus of Fig. I, chamber 20 has an outlet hole 22, is connected by pipe 40 to a deformable reservoir 10, and has mounted therein measuring tube 25. The tube 40 may have an enlarged upper portion 45 in which is fitted a splash guard 48. Where the liquid to be delivered attacks the wall of the reservoir, the apparatus of Fig. 2 may be used, in which the liquid is enclosed in a glass tube 60. If desired the tube 40 may be removed and the chamber and reservoir directly connected to form the apparatus of Fig. 3, which may be used as a conventional suction pipette. In place of the outlet hole 22 valve means may be employed ; for example, as shown in Fig. 4, valve 61 comprises a thin plastic disc 62 adapted to seal opening 22<SP>1</SP> when in contact therewith, and connected by a thread 63 to a spider device 64 which retains the disc in opening 22<SP>1</SP> but does not restrict air flow therethrough when in contact with the chamber wall. Alternatively as shown in Fig. 5 the chamber may have a curved tube extending therefrom and terminating in valve casing 71, which communicates with the atmosphere through opening 73, and which contains a valve membrane 74, of for example polyethylene. This membrane forms a seal on contact with the face 72, but not on contact with face 76 since this contains grooves extending beyond the area covered by the membrane. The face 75 of member 76 is conical in shape so that the central inner portion of member 76 extends fairly close to membrane 74 to keep said membrane in position. A similar valve is shown in Fig. 7, in which the surface 82 is grooved, and the valve member consists of two polyethylene membranes 89 and 90 sealed together at the edges and held apart at the centre by electrostatic repulsion or entrapped air. Specification 815,199 is referred to.
Patent GB-1240171-A (GB)
Title: Improvements in or relating to pumps and agitators
IPC: F04D29/04
Filed: 1968-10-02
Abstract: 1,240,171. Bearings. TEIKOKU DENKI SEISAKUSHO K.K. 2 Oct., 1968 [27 Nov., 1967], No. 46837/68. Heading F2A. A means for preventing a pumped or agitated medium from entering a bearing 14, Fig. 1, of a rotary pump or agitator, comprises a chamber 46 supplied with pressurized gas, said chamber 46 having a partition wall through which a shaft 17 of the pump or agitator extends, the pressure gas maintaining the level of the pumped medium below the level of the bearing 14. The bearing 14 supports a rotor-frame 13 of an electric motor on a non-rotatable shaft 9 and is supplied with a coolant and lubricant through bores 40, 41 in the shaft 9. The chamber 46 is supplied with pressurized gas from a source 35, via a pipe 34, a valve 33 and a pipe 32. The shaft 17 carries an impeller 24 which, in use, forces some of the medium through a clearance g2 formed between the partition wall and the shaft 17. The medium is prevented from flowing in a circular current by means of baffle plates 47 and is maintained below the level of the bearing 14 by the pressurized gas, adjustment of which is effected by the valve 33. The electric motor may be either an axial or a radial air gap type induction motor.
Patent GB-1527995-A (GB)
Title: Stabilisers for chlorine-containing resins and process for producing the same
IPC: C01F11/02
Filed: 1975-11-14
Abstract: 1527995 Supported calcium salts SEKISUI KAGAKU KOGYO KK and SHINAGAWA CHEMICAL INDUSTRY CO Ltd 14 Nov 1975 46861/75 Heading C3L [Also in Division C1] Calcium hydroxide coated with a calcium salt of a saturated organic acid is used as a stabilizer against thermal decomposition of chlorine-containing resins. The stabilizer is generally added in an amount of 0À5 to 10% byweight of the system.
Patent GB-1066440-A (GB)
Title: In situ polymerization of lactams in flexible molds
IPC: B29C33/00
Filed: 1963-11-27
Abstract: 1,066,440. Moulds. POLYMER CORPORATION. Nov. 27, 1963 [Dec. 4, 1962], No. 46888/63. Heading B5A. A mould for the in situ polymerization of polylactam articles consists of a cured acid-free polysiloxane. The polysiloxane is obtained from a mixture of an organopolysiloxane of formula RnSiO 4-n , preferably a methyl polysiloxane, from 0À1-50% by weight of the siloxane of a hydrocarbonoxy silicate, from 0À01-10% by weight based on the weight of the siloxane of a carboxylic acid salt of metals ranging from lead to manganese inclusive in the electromotive series of metals, and a silica filler. The mould is formed by pouring the polysiloxane around a master or prototype, which is preferably made slightly oversize preferably by heating to compensate for shrinkage on polymerization of the lactams, and then curing the organopolysiloxane, preferably at room temperature. The shaped polylactam articles are formed by charging the polysiloxane mould with a higher lactam and polymerizing said lactam under substantially anhydrous conditions. Preferably the lactam is epsiloncaprolactam, and is put into the mould after it has passed through an incipient polymer formation stage. Preferably the mould is preheated, and an anionic polymerization catalyst, e.g. sodium caprolactam, and a N,N-diacyl tertiary nitrogen promoter compound, e.g. tolylene diisocyanate, are added. Preferably polymerization is initiated above the melting point of the lactam monomer, but below the melting point of the polymer and the maximum polymerization temperature reached is below the melting point of the polymer, the mould being heated during polymerization of the lactam. The mould may be provided with a non-flexible backing. Articles produced include rods, bars, sheets, plates, gears, timing screws, fan blades, roll covers, spheres and drive bushings.
Patent GB-1313822-A (GB)
Title: Cutter drive member means for an electric dry shaver
IPC: B26B19/28
Filed: 1971-10-08
Abstract: 1313822 Dry shavers SPERRY RAND CORP 8 Oct 1971 [30 Dec 1970] 46967/71 Heading B4B An electric dry shaver comprises a cutter head 12 mounted on a casing 11 and including a stationary cutter 16 co-operating with a movable cutter 17 reciprocated by a motor 23 via a drive member 35, the drive member being provided with flexible leg members 44, 45 detachably secured to flanges 68, 70 on a plate 60 by clamp members 76, 77. As shown the drive member is made from a plastics material and formed from three separate portions 39, 40, 41 each provided with an arm 36 for engagement with a respective cutter 17. The flexible members 44, 45 are formed with projections 80 for location in slots 78 formed in the clamp members which are provided with slots 83 for releasable engagement with lugs 85 on the flanges 68, 70. The plate 60 is riveted to the motor housing 27.