baber/WOPTO huggingface dataset:
Patent GB-1027125-A (GB)
Abstract: 1,027,125. Variable capacitors. P. DAU, [trading as PAUL DAU & CO.]. Aug. 4, 1964 [July 16, 1963], No. 30508/64. Heading E1M. A variable capacitor comprises at least one stator having plural vanes, and at least one rotor having plural vanes engaging and interleaving the stator vanes on rotation to vary the capacitance; and at least part of the characteristic curve of capacitance against rotation is modified to conform to the corresponding part of a required characteristic by application of deposits of dielectric material to at least one side of at least one stator and/or rotor vane, of such thickness and portions as to remove deviations. In Fig. 1, frame 10 having recessed insulators 12 supports two packs 13, 14 of parallel stator vanes 15. Tuning shaft 18 is journalled in the frame to gearedly rotate shaft 26 carrying corresponding packs 30, 32 of rotor vanes engaging the stator vanes with predetermined airgaps to vary the capacitance of each section. The capacitor sections are calibrated by determining the characteristic curve, comparing it with an idealized curve and depositing a layer of synthetic plastic material, e.g. P.T.F.E., on at least one side of one or more rotor vanes 28 and/or on at least one side of one or more corresponding stator vanes 15 in thickness and location such as to compensate for characteristic deviations; e.g. in liquid form by dipping, spraying, injection or extrusion; the material thereafter setting solid. Preferably the material is sprayed on both sides of the vanes 15 and/or 28 from a double nozzle in locations shown as 34, 36, 38 and 40, 42, 44 (Fig. 2) which need not coincide. The dielectric material may be applied automatically in response to measurements of the characteristic curve and comparison with an ideal curve.
Patent GB-1050808-A (GB)
IPC: G02B21/00
Abstract: 1,050,808. Microscopes. CARL-ZEISSSTIFTUNG, [trading as CARL ZEISS]. July 25, 1964 [July 5, 1965], No.28430/65. Heading G2J. A stereoscopic medical operation microscope has an exchangeable, sterilizable plate or hood, which is preferably transparent, arranged arround the main objective mount, for separating the sterile operating field from the unsterile instrument. The plate or hood may be supported on a flange on the mount Figs. 1, 2, (not shown) or on a number of circularly arranged spring-loaded springs fixed to a holder Figs 4a, 4b, (not shown). Focusing may be effected by adjustment of the main objective Fig. 3 (not shown), the support Fig. 8 (not shown), a Galilean magnification changer Fig. 6, (not shown) or a pancratic magnification changer Fig. 7, (not shown), using a servo-motor, operated by a foot control or by tilting, or rotating, the protective plate or hood; the main objective may also be adjusted by rotating the hood or plate without the use of a servomotor Fig. 2, (not shown). A locking device enabling the protective plate to be exchanged is depicted in Fig. 5 (not shown).
Patent GB-1051149-A (GB)
IPC: H02M3/135
Abstract: 1,051,149. Cyclical chopping circuits. PLESSEY.U.K. Ltd. Aug. 29, 1963 [Aug. 31. 1962], No. 33601/62. Heading H2H. [Also in Division H3] The current through a load R supplied from a D.C. source is cyclically chopped by a circuit including silicon controlled rectifiers SCR 1 , SCR 2 , SCR 3  and a capacitor C, the rectifiers being triggered by conventional circuitry (not shown). The charging of capacitor C is controlled by the rectifier SCR 2  and its discharge (through the load R) by the rectifier SCR 3 , which latter action stops conduction of the rectifier SCR 1 . Thus the supply to the load R may be controlled in any desired manner by appropriate triggering of the rectifiers. Members L 2 , D 1  act as a smoothing filter arrangement and inductor L 1  enables the capacitor C to charge to a voltage greater than the supply voltage. The circuit may be modified by replacing the rectifier SCR 2  by an ordinary diode and connecting the inductor L 1  to the circuit point P.
Patent GB-1143835-A (GB)
IPC: C12Q1/52
Abstract: 1,143,835. Determination of transaminases. CHUGAI SEIYAKU K.K. 4 May, 1966 [11 May, 1965(2)], No. 19727/66. Heading B1X. A preparation for the determination of the enzymic activity of glutamic-keto acid transaminases other than glutamic oxalacetic transaminase comprises a keto acid other than oxalacetic acid, glutamic acid, aspartic acid, glutamic-oxalacetic acid transaminase, a colour developer agent responsive to oxalacetic acid and a buffer composition to maintain the pH between 7 and 9. Instead of using the colour developer agent the oxalacetic acid formed may be measured by the aniline-citric acid method. The reactions concerned are:- The keto acid, glutamic acid, aspartic acid or their salts may be used in molar ratio 0.8-3: 1-5: 10-30. Other constituents may be pyridoxal phosphate and inert diluents such as lactose, polyvinylpyrrolidone, carboxymethyl cellulose. The glutamic-oxalacetic transaminase may be mixed with ovo-albumin, or this transaminase and pyridoxal phosphate may be used impregnated on a porous material. The colour forming agent may be 4-amino-2,5-diethoxybenzanilide diazonium chloride; 6-benzamide-4-methoxy-m-toluidine diazonium chloride; tetrazotised O-di-anisidine, these optionally in the form of double salts with inorganic halides; or 2, 4 dinitrophenylhydrazines. Transaminases which may be determined using the invention include glutamic-pyruvic, glutamic-p-hydroxy-phenyl pyruvic, glutamic-imidazolepyruvic, and glutamic-glyoxylic transaminases.
Patent GB-1225226-A (GB)
IPC: C01B31/26
Filed: 1969-03-20
Abstract: 1,225,226. Carbon disulphide. PROGIL. 20 March, 1969 [26 March, 1968], No. 14838/69. Heading C1A. Carbon disulphide is prepared by a continuous process comprising reacting gaseous sulphur with an unsaturated aliphatic hydrocarbon in a sulphurating apparatus, the hydrocarbon being introduced into the gaseous sulphur at at least two separate locations in the apparatus. The sulphur may be diluted with CS2 and/or H 2 S and is preheated to 130 » 150 C. before entering the apparatus. The sulphurating apparatus consists of a heated coil, and optionally, situated downstream from the coil, a sulphurating reactor, at least one of the hydrocarbon injection points being located in the reactor. The contents of the coil are maintained at 600 » 750 C. and under a pressure of 1 » 10 bars. In one embodiment the hydrocarbon charge may consist partly of saturated hydrocarbons and partly of unsaturated hydrocarbons, and they may be introduced separately or in admixture at the different levels of the apparatus. The preferred mixture is methane and propylene, the weight ratio of CH 4  to C 3 H 6  being between 1: 0À1 and 1: 10.
Patent GB-1225629-A (GB)
IPC: C04B35/14
Filed: 1967-08-11
Abstract: 1,225,629. Silica mortars. PILKINGTON BROS. Ltd., and A. V. MORSANYI. 15 July, 1968 [11 Aug., 1967], No. 37064/67. Heading C1J. A mortar for silica bricks of glass melting furnaces comprises ground or crushed cristobalite and/or tridymite and has a particle size such that more than 55 weight per cent of the mortar passes a 300 B.S.S. mesh sieve. The mortar can also contain 0À3-1À2 wt. per cent water soluble methyl cellulose, 3% molasses, dextrine, sodium silicate, boric oxide or 2»3% hydrated lime. The cristobalite and/or tridymite used can be made by crushing silica brick which has been fired to 1450‹ C. or by heating quartz to above 870‹ C., e.g. to 1500‹ C. The mortar has a porosity of 20-52% after firing at 1500‹ C.
Patent GB-1225795-A (GB)
IPC: G01C13/00
Filed: 1968-06-05
Abstract: 1,225,795. Measuring contours; depth sounding. NIPPON TETRAPOD CO., Ltd June 5, 1968, No.26787/68. Headings G1M and G1X. A broken barrier or wall of tetrapods 14 forming a pile such as a breakwater may have its contour plotted as in Fig. 9 before repair by lowering a perforated triangular frame 1 on to its surface at various positions and plotting the depth and distance apart of these positions from a datum surface or line, the contour so plotted enabling the necessary number of tetrapods to effect the repair to be determined according to a disclosed formula.
Patent GB-1227910-A (GB)
IPC: B32B27/00
Filed: 1969-12-23
Abstract: 1,227,910. Reinforced plastics laminate. B. ROMANIN. 23 Dec., 1969 [30 Dec., 1968], No. 62543/69. Heading B5N. A method of manufacturing a reinforced laminated plastics structure comprises applying pressure to an assembly, comprising at least two sheets of thermoplastic material 10<SP>1</SP>, 10<SP>11</SP> which have been previously and separately calendered and heated to a temperature which enables them to be pressure welded, each adjacent pair of sheets being separated by a reticular fabric 11, wherein the fabric is woven from filaments or yarns of a synthetic material having a melting point higher than that of the thermoplastic material, and wherein the fabric is heated to a temperature such that on the application of pressure to the assembly, the filaments or yarns of the fabric embed themselves in the inner surfaces of the sheets so that the inner surfaces come into mutual contact through the interstices of the fabric and weld themselves together. The thermoplastic sheets may be of plasticized polyvinyl chloride and the fabric may be of polyester or polyamide yarns, e.g. polyhexamethylene adipamide.
Patent GB-1228094-A (GB)
IPC: C07D339/08
Filed: 1969-10-14
Abstract: 1,228,094. Sulphonium salts. J. R. GEIGY A.G. 14 Oct., 1969 [15 Oct., 1968], No. 50552/69. Heading C2C. Novel sulphonium salts are prepared by adding an organic sulphide in a strongly acid medium to an aliphatic or cycloaliphatic unsaturated compound, wherein at least equivalent amounts of said sulphide and unsaturated compound and at least an equimolar amount of said acid are used; and (a) an aqueous or aqueous-organic solution having a pH below 1-0; or (b) an inorganic or organic acid having a pK value in water of less than 4-5; or (c) an organic solvent which is inert under the reaction conditions and contains a Bronsted-Lowry acid having a pK value in water of less than 4-5 or containing a Lewis acid, is used as the strongly acid medium. The novel sulphonium salts may have one of the following general formulae: wherein R 1 -R 6 , X and Y represent a variety of organic radicals, n is a number corresponding to the number of -SR 5 R 6  groups and M# is a monovalent anion. Examples describe the preparation of numerous sulphonium salts, generally in the form of.Reineckates or mineral acid salts.
Patent GB-1230111-A (GB)
IPC: B42F17/00
Filed: 1968-02-19
Abstract: 1,230,111. Filing papers &c. GRAHAM F. SHIRLEY (HOLDINGS) PTY. Ltd. 31 Jan., 1969 [19 Feb., 1968], No. 8059/68. Heading B6E. A device for producing printed sheets in the form of herd breed society certificates comprises a card supporting member 24, Fig. 4, having a number of equally spaced flaps 26 which form supports for cards 6, Fig. 5, in which are entered details of a beast at 11, the name of the breeder appearing at 10. The top card may be preceded by a certificate card (9, Fig. 1A) and both types of cards are detached from respective endless webs which divided transversely into cards of equal width. The marginal perforated edges are taped by a masking tape 13 to provide a collated card assembly which may be photographed to produce a printing plate for production of the printed certificate.
Patent GB-1230618-A (GB)
IPC: B41J1/02
Filed: 1968-07-22
Abstract: 1,230,618. Typewriters. K. V. SCHLACHTA, and H. BARUSCHKE, [trading as ALFRED RANSMAYER & ALBERT RODRIAN]. 22 July, 1968 [21 July, 1967], No. 34976/68. Heading B6F. A device for releasing detachable type-carriers 28 from type-levers 27 having resilient typecarrier retaining hooks 30, comprises a body 11, (12) with two stubs 13, 14 with a channel (26) in between to receive a type-carrier, one stub 13 slidingly carrying a type carrier release element 19 which is movable from the position shown in Fig. 1 to that shown in Fig. 4 where the hook 30 is deflected from the end of the typecarrier 28 and a part 24 engages behind the carrier so that the lever 27 may be detached from the carrier by movement of the lever in the direction 33. The release element 19 is mounted on two pins (16), 17 sliding in a reduced part of the stub 13 and the part 24 is formed on an angle bracket fixed on the element 19 and a spring-biased pressure element 18 which transmits the release action through the pins (16), 17.  In a modification, Figs. 6, 7 (not shown), typecarrier removing device may be of hexagonal shape so that six type-carriers may be detached and retained by rubber friction brake pins (34, 40).
Patent GB-1231083-A (GB)
IPC: A61B17/322
Filed: 1968-07-05
Abstract: 1,231,083. Device for removing calloused skin. SCHOLL MFG. CO. Ltd. 5 July, 1968 [5 July, 1967], No. 32243/68. Heading A5R. A device for use in removing calloused skin from the human body comprises a handle 1, preferably of heat and acid resistant plastics material, having at its forward end an arcuate blade supporting plate 2 extending sidewardly from the handle, the radius of curvature of the plate lying in a plane generally transversely to the axial direction of the handle, a cut out portion 6 adjacent to the joint of plate and handle, and an arcuate cover plate 8 pivotally connected to the device by a hinge pin (7), Fig. 2, (not shown) so as to movable to a closed position in order to secure a blade 10 between the supporting plate 2 and cover plate 8. The plate 2 has a cut out portion 4 disposed inwardly of its rear edge bonded by a skirting board 5 thicker than the blade 10, the supporting plate 2 having two holding noses 3 on its outer end. A clamping element 11 on the cover plate 8 engages the noses 3 in the closed position. Two lugs 9 are attached to the under surface of the cover plate 8 to support the blade, or alternatively the supporting plate 2 may have a rib 12 to support the blade in use.
Patent GB-1233336-A (GB)
IPC: A45D2/24
Filed: 1969-09-19
Abstract: 1,233,336. Straightening hair. KINGSHOTT INVESTMENTS (PTY) Ltd. 19 Sept., 1969 [20 Sept., 1968], No. 46310/69. Heading D1P. [Also in Division A4]  Hair or other keratinous fibres which are curly or crinkled are straightened by first applying an oily preparation rendering the fibres combable, followed by a composition comprising thioglycolic acid or a salt thereof and ammonia, the fibres being held in a tensioned state by means of a mandrel and clamp for a period of time sufficient to cause a straightening of the fibres. The oily preparation may comprise a mixture of cholesterol, sulphonated castor oil and a sulphated oil. The thioglycolic acid containing composition may further comprise a surfactant (either anionic, cationic or non-ionic), at least one ammonium or alkali metal sulphite or sulphide, an alkanolamine, and ethanol. Tension may be applied to the fibres either before, during or after applying the composition and 'tension may be applied sufficiently long to remove at least 50% of the curls or crinkles. A suitable tensioning device is described.
Patent GB-1233896-A (GB)
IPC: F16K11/02
Filed: 1967-07-03
Abstract: 1,233,896. Valves. RONALD TRIST CONTROLS Ltd. 24 June, 1968 [3 July, 1967], No. 30601/67. Heading F2V. [Also in Division F4] Two water spaces of a boiler are blown down in succession through connections 10, 14 which open laterally through ports 9, 12 into a cylindrical valve chamber 2. The valve comprises a lift valve 27 downstream of and fast with a piston valve 36 which has an elongated port 37 and two ports 38, 39. The valve 27 is normally held closed as shown by condensate pressure admitted to the piston through a solenoid valve 22. On energization of this valve the piston is vented at 23 and boiler pressure acting on it through ports 9, 37, moves the piston to shut off connection 14 and blow down connection 10. Further movement re-opens connection 16 to blow down through port 39 and close port 9. In the event of electrical failure, the valve can be operated by closing a manual cock 46 in the condensate line and opening a manual vent cock 44. In a modification the porting is re-arranged to reverse the order of blow down.
Patent GB-1250940-A (GB)
IPC: B29C48/12
Filed: 1969-06-20
Abstract: 1,250,940. Sizing extruded thermoplastics tubing. PHILIP MORRIS Inc. 20 June, 1969 [24 July, 1968], No. 31437/69. Heading B5A. [Also in Division F2]  Accurate sizing of longitudinally ribbed thermoplastics tubing is effected by passing ribbed extrudate 32 from extruder. 20 into a liquid-coolant chamber 40, maintaining a pressure differential between the interior of the extrudate and the liquid such as to expand the extrudate, and confining the extrudate by a series of encircling plates 55-66. These plates each have similar central orifices shaped such that spaces 250, Fig. 6, adjacent the peaks 201 of the ribs are greater than the spaces 252 adjacent valleys 225, thereby ensuring that peaks 201 cool at a higher rate than the valleys. Further plates 110-112, Fig. 1, support the set tube. The pressure differential is obtained by applying a vacuum to chamber 40 by means of an aspirator 81 and pump 83 and venting the interior of the extrudate to atmosphere via conduit 25. Liquid is supplied to chamber 40 by a pump 88 via a spray ring 90, discharge from the ring causing turbulence in the neighbourhood of plates 55-59. Chamber 40 is sealed at each end by glands 51, liquid being pumped through conduits 53 therein to effect the seals and provide lubrication for the extrudate. Further cooling chambers may be interposed between chamber 40 and haul-off mechanism 70. Thermoplastics mentioned are polyolefins, styrenes and acetates, the preferred material being low density polyethylene to which the parameters of the description refer. The tubing is particularly intended for use in making cigarette filter tips.
Patent GB-1251159-A (GB)
IPC: B23B13/12
Filed: 1969-04-10
Abstract: 1,251,159. Bar-stock feeding. TRAUB VERTRIEBS G.m.b.H. 10 April, 1969 [8 Feb., 1969], No. 18321/69. Heading B3B. A workpiece feeder, e.g. for a single spindle automatic lathe, comprises a base structure supporting a workpiece feeder having a rotatable and axially movable holder 45 which can be connected to and disconnected from a workpiece 43 for feeding it into a lathe guide tub 42 and for withdrawing a machined or residual workpiece from the guide tube and then releasing it; a workpiece gripper comprising jaws 22 which can be moved towards and away from the path of the workpiece feeder; a longitudinally displaceable drive member, for moving said workpiece gripper; and a prime mover, e.g. a solenoid, for said drive member. The workpiece 43 is gripped whilst the holder 45 is pushed on to the end of the workpiece and is then moved out of the path of a feed member 44. When a workpiece is retracted from the guide tube 42 it is again gripped for release of the holder 45. In a first embodiment of the gripper (Figs. 3-6, not shown) jaws are provided by pivoted levers forced apart by a wedge (16). The jaws are mounted on a carriage (9) movable vertically on a slide post (8) held in a guide member (7). The movement of the jaws and the lowering and raising of the carriage (9) are effected by solenoids operating on levers (28), (35). In a second embodiment (Figs. 7-10, not shown) the jaws (52), (53) are mounted on reciprocable rack rods (54), (55) operated by a common pinion (74). The jaws are carried on a member (59) which is pivotally mounted to a fixed casing (64). The rotation of the pinion and the pivoting of the member are effected by solenoids. In both embodiments the jaws include stops (38) (57) which control the position of the workpiece within the jaws.
Patent GB-1257886-A (GB)
IPC: B07B7/08
Filed: 1970-07-23
Abstract: 1,257,886. Centrifugal separators. PFEIFFER BARBAROSSAWERKE A.G. GEB. 23 July, 1970 [24 July, 1969], No. 35648/70. Heading B2P. A centrifugal air separator for grading granular material according to size, Figs. 1 and 2, comprises a horizontal cylindrical separating chamber having an inlet 4 for separating air in its peripheral cylindrical wall and an inlet 3 for the material to be graded in its top surface adjacent such wall, and having mounted therein spaced concentric rings 5, 6, 7 of spiral-flow producing vanes 5', 6', 7', outlets 8, 9, 10 being provided downstream of each ring of vanes for separated grades of material. Very fine grains of material may leave with the air through an outlet 11 which may be connected to a filter. The vanes may be fixed or angularly adjustable. Additional fresh air may be fed into the chamber through an inlet upstream of one of the vane rings or within the sweep of a vane ring, Fig. 3 (not shown); such air may also be fed adjacent the ceiling or floor of the chamber. In Fig. 5, the depth of the chamber may be increased in the direction of air flow in the successive areas separated by the rings of vanes. Fresh air may be supplied in the region of the ceiling or floor of the chamber or in both regions as at 16 and 17.
Patent GB-1258471-A (GB)
IPC: A01G3/025
Filed: 1969-03-07
Abstract: 1,258,471. Pruning shears. P. LEYAT. 7 March, 1969, No. 12073/69. Heading B4B. A tree pruning shears comprises a pair of shear blades 16, 18 rotatably mounted about an axis B-B, Fig. 2, at the top of a pole 10 and means, including a control lever 14, for actuating the shears in such a way that the actuation of the shears is independent of their angular position about the axis of rotation. The shear blade 16 is mounted on a member 17 which is rotatable on a member 23 fixed to the top of the pole.. The lever 14 is connected to the shear blade 1 by means of a cable 15 which passes over a pulley 21 on the member 23 and a second pulley 20 mounted on the member 17, the line of the cable between the pulleys coinciding with the axis B-B. The pole is made from a number of interlocking sections 11. The cable is provided with stop members 22 which may be selectively engaged in a slot in the lever depending upon the selected length of the pole.
Patent GB-1265152-A (GB)
IPC: C07C37/14
Filed: 1968-03-20
Abstract: 1,265,152. Preparation of ortho-alkylated phenols. WILLIAM PEARSON Ltd. 20 March, 1969 [20 March, 1968], No. 13560/68. Heading C2C. A process for ortho-alkylating phenols comprises reacting under acid conditions a phenol, unsubstituted in at least one of the orthopositions, with an olefine in the presence of a clay catalyst, the reaction being effected at an elevated temperature and at above atmospheric pressure. The catalyst preferably comprises aluminium magnesium silicate, calcium montmorillonite or sodium montmorillonite.
Patent GB-1290940-A (GB)
IPC: C08K3/06
Filed: 1970-11-26
Abstract: 1290940 Sulphur solutions H ZUKRIEGEL and K ENTZMANN 26 Nov 1970 56302/70 Heading C1A [Also in Division C3] Solutions of sulphur are prepared by dissolving the sulphur in at least one amine then dissolving the resulting solution in water or other media in which the sulphur itself is insoluble but in which the amine is soluble. The amine may be a primary or secondary alkyl-, aryl-, alkylaryl-, hydroxyalkyl-, hydroxyaryl- or hydroxyalkylarylamine. Mono-, di-, and triethanolamine are specified.