baber/WOPTO huggingface dataset:
Patent GB-1124658-A (GB)
Title: Process for the defined increase in the molecular weight of unsaturated polymerised hydrocarbons
IPC: C06B23/00
Filed: 1965-12-08
Abstract: The molecular weight of unsaturated polymerized hydrocarbon prepared by the polymerization of one or more diolefins or copolymerization of diolefines with mono-olefins in an inert organic solvent using as the polymerization catalyst metallic Na and/or K or their organic compounds containing carbon-metal or nitrogen-metal bonds is increased by reacting the polymerizate after the end of polymerization or after the desired degree of conversion has been reached, and before or after decomposition of the catalyst with another catalyst system consisting of (a) a compound of the general formula RnMeXy-n in which Me denotes B, Al, Ga, Be, Mg, Ca, Zn. Si, Sn, As, Sb, Ti, Zr, P, Mo, W, Bi, Fe, Hg, Cd, V, or U; X denotes F, Cl, Br, or I, R denotes H, an alkyl, cycloalkyl, aryl, aralkyl, alkoxy, or sulphoxy radical, or a carboxylate anion, y denotes the valency of Me, and n has a value from zero to the valency of Me, and (b) a compound containing active hydrogen.  The catalyst component (a) is added in a concentration of 0.01 to 10% by weight with reference to the polymer used and the component (b) in an amount of 0.002 to 2 moles per mole of catalyst component (a).  The Specification contains extensive lists of (a) and (b).  In Example I, butadiene is polymerized with Na, and subsequently TiCl4 + ethyl Al sesquichloride + water added, after an hour polybutadiene is precipitated with methanol. In Example II a copolymer of butadiene and styrene is prepared with Na as catalyst and subsequently TiCl4 + ethyl Al sesquichloride + formic acid added, and the copolymer precipitated with methanol.  In Example 3, butadiene is polymerized with K, and then a benzene solution of ethyl Al sesquichloride and acetic acid added, and after a reaction period of one hour the reaction is terminated with acetone and the polymer precipitated with methanol.
Patent GB-1173619-A (GB)
Title: Optical Colour Filter Selecting Device.
IPC: G03B33/00
Filed: 1967-11-15
Abstract: 1,173,619. Filter selector. DUNCAMERA Ltd. Nov.15, 1967 [April 7, 1967], No.52047/67. Heading G2J. An instrument for selecting the appropriate colour filter to be used with a camera under varying illumination comprises a casing 10, Fig. 3, with a standard light source 27 whose beam passes through a variable neutral density filter 74 to be reflected at an annular mirror into eye-piece 40 and surrounds a circular beam passing from the camera subject through aperture 80, a neutral density filter and one of a series of colour filters so as to pass through the annular mirror to the eye-piece 40. As shown the light source 27 is supplied from batteries 53 through a rheostat so that the voltage thereacross as shown on voltmeter 43 may be constant. A colour filter and diffuser 67 are fixed to the prismatic annular mirror to match the light source 27 to the film sensitivity. On rotating knurled flange 103 the two neutral density filters are rotated simultaneously, their variations in density being so arranged that as light from source 27 is increased that from the subject is decreased and vice-versa so that similar intensities may be observed in eye-piece 40. The colour filters are arranged on a disc rotated by knurled member 97 which has an index mark co-operating with filter indicia on casing 10 so that after adjustment the required camera filter can be read off. A rotatable disc 105 at the front of casing 10 has two portions one of which is clear, for use when light is reflected by a white card from the subject, and one which is translucent, for use when it is possible to view the subject directly.
Patent GB-1278998-A (GB)
Title: Improvements in or relating to a heat exchanger for cooling fluids such as oil
IPC: F28D1/03
Filed: 1969-10-23
Abstract: 1278998 Brazing. SOC ANON DES USINES CHAUSSON 23 Oct 1969 [23 Oct 1968] 52076/69 Heading B3R [Also in Division F4] In a heat exchanger particularly for cooling oil and comprising a stack of stamped sheets 1 and 2 arranged to define spaced apart flow passages 4 for a fluid to be cooled extending between distribution and collection chambers 8 and (9, Fig. 1) respectively, a surrounding framework formed by interconnected end and side members 12, 13 and 14 and 15 serves to hold the constituent elements of the stack in position during brazing in a flux bath. The sheets 1 and 2, which are made of aluminium, together with flow disturbing members 11 located in the flow passages 4 and corrugated plates 5 attached to and disposed between adjacent flow passages form the stack; supply and discharge tubes 23 each formed with an elongate aperture 25 pass through and communicate with each of the chambers 8, (9). The turned over edges of the members 14, 15 have projections 28 which are received in a slot and groove arrangement 20, 19 formed in lugs 18 on the members 12 and 13. The members 14 and 15 have bent over lugs 29. In an alternative embodiment (Figs. 8-11, not shown) a modified slot-projection coupling arrangement is used to interconnect the frame members.
Patent GB-1241027-A (GB)
Title: Slewing crane
IPC: B66C23/52
Filed: 1968-11-04
Abstract: 1,241,027. Jib cranes. INDUSTRIEELE HANDELSCOMBINATIE HOLLAND N.V. 4 Nov., 1968 [28 Nov., 1967], No. 52102/68. Heading B8B. A level-luffing, slueing jib crane, shown mounted on a position 1 and provided with a counterweight 14, has a jib in two parts 8, 9 hinged together at 10 and pivoted at 7 on superstructure 3. In normal use the two parts 8, 9 are rigidly connected in line by links 11, as shown at I. When required to lift a load larger than the normal maximum the jib is lowered to position II, where the pivot 7 is engaged on a support 12 pivoted at 13 to the pontoon 1. The links 11 are then removed and the jib part 8 luffed to position III. (For Figure see next column.)
Patent GB-1112982-A (GB)
Title: Improvements in or relating to frequency synthesisers
Inventor: MCAINSH JARVIS NEVILLE
IPC: H03L7/185
Filed: 1965-04-26
Abstract: 1,112,982. Automatic frequency control systems. GENERAL ELECTRIC CO. Ltd. 13 June, 1966 [26 April, 1965; 13 Dec., 1965], Nos. 52293/67 and 52294/67. Divided out of 1,112,981. Heading H3A. The description is the same as that of Specification 1,112,981 but the claims differ.
Patent GB-1069179-A (GB)
Title: Improvements in or relating to gilled tubes for heat exchangers
IPC: F28F1/20
Filed: 1965-12-10
Abstract: 1,069,179. Heat exchanger tubes. BIRAGNI. Dec. 10, 1965 [Nov. 26, 1965], No. 52489/65. Heading F4S. A radially extending fin on a heat exchanger tube comprises a longitudinally corrugated strip on which is formed a foot (5) having two protrusions or ribs (6 or 9) by which the fin is welded to the outer circumference of the tube. A plurality of the fins are secured to the tube giving the latter a generally star-shaped crosssection (Fig. 3). The fin may be U-shaped or L-shaped in cross-section.
Patent GB-1329433-A (GB)
Title: Method and apparatus for forming sheet glass
IPC: C03B15/06
Filed: 1970-11-05
Abstract: 1329433 Drawing sheet glass ASAHI GLASS CO Ltd 5 Nov 1970 [6 Nov 1969 22 Sept 1970] 52619/70 Heading C1M Sheet glass is produced by drawing glass vertically upwards in the form of a ribbon 3 from a bath of molten glass 1, through a slit 13 defined by a pair of elements 2 which are partially submerged in the bath 1 and are rotatable at a speed of the order of a few revolutions per day or less. Each element has enlarged end portions and a reduced diameter intermediate portion of circular cross-section thereby forming the slit 13 between two adjacent elements. An edge block 14 for smoothing the edge of the ribbon is mounted across each pair of adjacent ends of the elements 2. The elements may be mounted such that their rotational axes are spaced from the geometric axes. Alternatively elements are provided in which the centre of the cross-section of the intermediate portion is spaced from the centre of the cross-section of the ends (Fig. 4a). Each of the elements 2 is driven by an electric motor acting through a gearing 24 and a spindle 21. The spindle 21 is made of a heat resisting alloy and has at one end 31 a ribbed cone for frictionally engaging the element 2 and a spring 26 biased against the other end. A cooling medium may be circulated through the interior of the spindle. The elements 2 are formed of a refractory material such as clay, graphite, stainless steel or a platinum covered moulding. The elements are kept warm by utilizing stainless steel screen plates 6 located on the surface of the molten glass adjacent the elements. The elements 2 may also be heated by an electric heating coil located in the bore of the drive axis 5.
Patent GB-1159506-A (GB)
Title: Demethylating Indole Alkaloids
IPC: C07D459/00
Filed: 1966-11-24
Abstract: 1,159,506. Preparing N-demethyl alkaloids; demetbylajmaline. ROUSSEL-UCLAF. 24 Nov., 1966 [25 Nov., 1965; 19 Jan., 1966], No. 52745/66. Heading C2C. N-demethyl alkaloids, especially demethylajmaline, are prepared by subjecting an alkaloid having an N-methylhydroindole group to the action of a culture of a micro-organism of the genus Streptomyces, The novel compound demethylajmaline is prepared by this method and can then be converted, e.g. to the tartrate or hydrochloride. Specific micro-organisms referred to are S. Griseus, S. Levandulae, S. Rimosus, S. Chattanoogensis, S. Platensis and S. Roseochromogenes. Pharmaceutical compositions comprise as active ingredient N-demethylajmaline or a non-toxic acid addition salt thereof and a pharmaceutical carrier or excipient. The compounds may be used via the pectoral, transcutaneous or rectal route and may be in the form of injectable solutions or suspensions, tablets, coated tablets or suppositories. The compounds are stated to have a regulating effect on the cardiac rhythm.
Patent GB-1311458-A (GB)
Title: Production of homogeneous rods of semiconductor material
IPC: C30B13/00
Filed: 1971-11-15
Abstract: 1311458 Zone-melting SIEMENS AG 15 Nov 1971 [2 Dec 1970] 52915/71 Heading B1S A rod of semiconductor material is made by zone melting e.g. electric induction, by supporting in a substantially vertical position, a tube made from a semiconductor material and closed at one end, which tube contains a filling of crystalline pieces of semiconductor material and/or a doping material, passing a molten zone formed in the tube and contents from one end to the other end of the tube and rotating the parts of the tube and contents lying on opposite sides of the molten zone relative to one another. As shown, in a vacuumtight housing 1, between supports 2 and 3 is clamped a tube 8. Support 2 is connetced to a shaft 19 which is driven by an assembly 16. The suport 2 can be rotated and also displaced axially by 16. In a similar manner support 3 via shaft 18 and drive assembly 17 can be similarly rotated and moved axially. The molten zone 10, is formed by a highfrequency coil 12, which is movable along the tube by adjustable supply line 14. Below zone 10 lies a part 13 of the original tube filled with pieces of semiconductor material. In another embodiment using a tube which contains a cylindrical core of a doping material besides particulate semiconductor material, separate clamping means is provided for the tube and cylindrical core.
Patent GB-1241029-A (GB)
Title: Cutter head
Inventor: OREND FRIEDRICH
IPC: B23F21/12
Filed: 1968-11-08
Abstract: 1,241,029. Milling cutter. VOITH GETRIEBE K.G. 8 Nov., 1968 [9 Nov., 1967], No. 53137/68. Heading B3K. A rotary cutter particularly intended for cutting gear teeth has one or more blades 9 adapted to be reciprocated radially during rotation of the cutter so that over a portion of its path 11 to 12 the blade edge 10 describes a straight line. Each blade holder 5 is mounted in a guide member 7 which is itself rotatably mounted on pin 8, the blade holder 5 being reciprocated radially during rotation of the cutter by a crank-pin 4 driven by a gear 2 in mesh with a stationary internal gear 3. Cutter body members 1, 1a are relatively angularly adjustable when stationary to adjust the rake angle of the cutter and the location of the cutting plane. Internal gear 3 may also be adjusted relatively to the cutter body member 1 when at rest to adjust the location of the cutting plane. V pulley 13 attached to body member 1 provides for drive to the cutter.
Patent GB-1095840-A (GB)
Title: Grilling apparatus
IPC: A47J37/04
Filed: 1966-12-01
Abstract: 1,095,840. Grilling apparatus. G. BAUKNECHT G.m.b.H. ELEKTROTECHNISGHE FABRIKEN. Dec. 1, 1966 [Jan. 7, 1966], No. 53744/66. Heading A4D. A grilling apparatus having an electric motor, 2, mounted on the grill casing, 1, for driving the grill spit, 7, anda coupling, 5, in the form of a simple push-on coupling which is engageable or disengageable with the grill spit in the longitudinal direction of its axis of rotation is characterised in that the coupling part of the driving motor is mounted so that it is movable in its axial direction relative to the grill casing. The driving motor is slidable axially by means of sleeves, 4, and guide pins 3. To uncouple the grill spit the motor is pulled into the position 2a with the aid of the handle 12 and against the force of the compression spring 13 so that the grill spit is dropped into the position shown in the drawing in between the two forked bearing plates 8 and 9. When the handle 12 is released the driving motor is moved under the force of the compression spring into position 2b such that the coupling, 5, engages over the end, 7a, of the grill spit in a locking manner.
Patent GB-1497796-A (GB)
Title: Stabilizing system for an inverter-driven induction motor
IPC: H02P23/08
Filed: 1974-12-13
Abstract: 1497796 Control of A.C. motors EATON CORP 13 Dec 1974 [14 Dec 1973] 54003/74 Heading H2J [Also in Division G3] An induction motor 20 is fed from a conventional static inverter 16 whose output frequency fi is determined by a D.C. signal produced by an amplifier 42 in dependence on a main control signal at input 42a, to which signal is added a signal at input 42b produced by a damping circuit 28 in response to a transient disturbance (for example in the motor load or control circuit), whereby oscillations in motor speed are reduced or suppressed. A signal fr from speed sensor 24 is applied to a frequency to voltage converter 56 whose output is applied to one input of a difference amplifier 58, whose other input receives the output of amplifier 42. The output signal V s  of amplifier 58 (proportional to slip frequency) is applied to a phase shifting circuit consisting of an amplifier 59, capacitor 61 and resistor 63 producing a phase lagging signal V T  proportional to the motor airgap torque. The signal V T  is applied to a filter network 60 having adjustable resistors 62, 64 to vary the signal applied to amplifier 42, whereby the motor may be over, under or critically damped as desired. Members 59, 60 may be combined into a lead/lag filter. The operation of circuit members 16, 20, 28 is explained using equivalent circuits, Figs. 2 and 3 (not shown). The main control signal to amplifier 42 may be produced by a closed loop system including a velocity-lock signal generator 10 such as that described in Specification 1,431,660 and causing the motor speed to track an input speed command signal.
Patent GB-1172746-A (GB)
Title: Improvements to Apparatus for Measuring Thermal Conductivity.
IPC: F15B7/00
Filed: 1967-11-28
Abstract: 1,172,746. Determination of thermal conductivity. COMMISSARIAT A L'ENERGIE ATOMIQUE. Nov.28, 1967 [Nov.30, 1966], No. 54095/67. Heading G1D. Apparatus for measuring the thermal conductivity of a material comprises an envelope for containing a heating plate 1 sandwiched between two panel shaped samples 2, 3 of the material, the outer surfaces of the samples contacting walls 8, 9 of the envelope these walls being maintained at a constant temperature during a test, which temperature is in the region of but slightly below the temperature of the plate 1, the envelope being completed by a ring 10 inside which the plates 8, 9 can shift, the ring 10 also being maintained at a constant temperature, and a clearance being provided between the ring 10 and the lateral walls of the samples 2, 3. The temperature of the walls 8, 9 may be controlled by thermocouples connected to electric heaters in the walls, and the ring 10 may be such as to have a temperature gradient therealong ranging from the greatest value adjacent the plate 1 to the least value adjacent the walls 8, 9. In this way lateral heat losses from the samples 2, 3 are eliminated. The envelope is mounted inside a pressure tight container 13 and is embedded in granular material 16 in the form of spherical particles of alumina, zirconia quartz and a pressure may be applied to the material 16 and thus to the envelope to keep the components thereof in heat conducting relation by pressurizing bladders 17 inside the container 13. The gaseous atmosphere inside the container 13 may be monitored as to pressure, humidity, and composition, and the atmosphere in the container 13 may be circulated if desired. Measurements on the samples 2, 3 may be made at different attitudes by rotating the container 13 in bearings 21. Thermal insulation 14 is provided on the outside of the container 13 and the container is maintained at a constant temperature by a water heated tubular coil 15. By means of the above apparatus it is possible to measure the thermal conductivity of samples at different temperatures up to say 500‹C., and to study the effects of changes in pressure and/or humidity on the samples.
Patent GB-1447388-A (GB)
Title: Self-acting adjusting device for use with a vehicle brake
IPC: F16D65/54
Filed: 1973-11-22
Abstract: 1447388 Automatic slack-adjusters ALFRED TEVES GmbH 22 Nov 1973 [22 Nov 1972] 54168/73 Heading F2E An automatically-acting adjusting device arranged in an operating cylinder 1 suitable for use with a vehicle wheel brake includes at least one adjusting bolt 8 which is held in position by a holding member 15 which is located in a bore 16 in the adjusting bolt, the adjusting bolt being movable, upon withdrawal of the holding member, partly into a space previously occupied by the holding member 15. As shown, two air-operated pistons 2 in the cylinder of an internal shoe drum brake each have press-fitted therein a sleeve 4 co-operating with an externally-threaded adjusting sleeve 6 having four slots 7 providing four spring arms; each sleeve 6 is slidably seated on an adjusting bolt 8 engaging by a cross-pin 9 in two opposite slots 7; the closed ends of these slots form stops 10 for the pin 9. The bolts have reduced ends, partially overlapped, and are secured together and to the cylinder 1 by a holding member or screw 15 extending through aligned bores (one shown at 16) in the bolts and screwed into a bore 17 in the cylinder 1. When screw 15 is unscrewed the bolts 8 may be moved towards each other so that the brake shoes may clear a scored or corroded brake drum prior to dismantling. The holding screw 15 is provided with an air exhaust bore 18 into which an air exhaust valve is screwed, (or the screw may be an air exhaust valve). In Figs. 3, 4, (not shown) one adjusting bolt is partially telescoped into the other prior to screw withdrawal, and fully telescoped after screw withdrawal. Pressure medium may pass through a bore in the screw. The cylinder bore for the screw is long enough for the screw to clear the bolts without leaving the cylinder. In Figs. 5, 6, (not shown) the screw has a hexagonal head. The holding member may be held by a bayonet-type coupling instead of a screwthread.
Patent GB-1163529-A (GB)
Title: An electron beam generating system
Inventor: STEIGERWALD KARL-HEINZ
IPC: H01J3/02
Filed: 1966-12-08
Abstract: 1,163,529. Electron guns. K. H. STEIGERWALD. 8 Dec., 1966 [13 Dec., 1965], No. 54981/66. Heading HID. A high-voltage electron gum, e.g. in electron beam welding apparatus, comprises a hollow cylindrical insulating body 5, on the external surface of which is provided an earthed electric conductor 3 possibly fixed by means of tightening straps, the thickness of the insulating body being determined by the dielectric strength of the material. The Wehnelt electrode 7 within which is supported a cathode holder is mounted on a ring fused at its edge within a thickened portion of the insulating body as shown. The surface of the thickened portion may be corrugated, Fig. 3 (not shown). In the embodiment shown the cathode holder 32 is inserted into the Wehnelt electrode 7 by a motor driven push rod 77 from a chamber containing spare cathodes with holders 132. The cathode holders are held in a motor driven magazine disc 64. The cathode change may be effected automatically in dependence on a variation of a beam parameter. An opening 60 is provided for filling and emptying the magazine disc 60 and an inspection window is provided at 59.
Patent GB-1319146-A (GB)
Title: Dual treatment of asbestos fibres
IPC: C04B14/40
Filed: 1970-11-24
Abstract: 1319146 Asbestos fibres JOHNS-MANVILLE CORP 24 Nov 1970 [24 Nov 1969] 55706/70 Heading C1A An asbestos fibre with improved filtration characteristics is produced by applying a spray of an aqueous solution of an alkali metal silicate or suspended silica to asbestos fibre maintained in air suspension so as to deposit 0-4 to 4% by weight of alkali metal solids on the fibre and subsequently adding to the fibre 0À05 to 5% by weight of a non-foaming anionic dispersant (e.g. a sulphonic acid derivative), the weights being based on the dry weight of asbestos. The dispersant may be added as a dry powder or as an aqueous solution sprayed on to the asbestos. The fibres treated with silicate may be mixed with a cement and made into an aqueous slurry or paste and formed into a wet sheet from which asbestos-cement articles can be made. The dispersant is added to the fibres after the silicate and may be added before or after combination of the asbestos and cement.
Patent GB-1209396-A (GB)
Title: Process for the preparation of dihydrocarvone
IPC: C07C45/58
Filed: 1968-11-26
Abstract: 1,209,396. Dihydrocarvone. R. J. REYNOLDS TOBACCO CO. 26 Nov., 1968 [8 Feb., 1968], No. 56093/68. Heading C2C. Dihydrocarvone is produced by treating limonene-1,2-epoxide with perchloric acid, preferably in a catalytic quantity, in an inert solvent medium, e.g. chlorinated hydrocarbons, aromatic hydrocarbons and cyclic ethers. The limonene-1,2-epoxide may be in the form of its cis or trans isomers, its optically active forms or its racemic form.
Patent GB-1272450-A (GB)
Title: Slide fastener
IPC: A44B19/12
Filed: 1969-11-17
Abstract: 1,272,450. Sliding clasp fasteners. TEXTRON Inc. 17 Nov., 1969 [20 Dec., 1968], No. 56150/69. Heading E2S. A continuous filament stringer 16 for a slide fastener comprises a series of U-shaped heel portions 28 lying in a common plane with the leg members 34, 36 of adjacent heel portions juxtaposed, intermediate leg portions 40, 42 formed by bending the leg members 34, 36 such that the leg portions lie in a plane inclined to that in which the heel portions lie, and interlocking means consisting of enlarged, e.g. looped, elements 20 attached to the juxtaposed leg members such that they lie in a plane substantially parallel to the plane containing the heel portions. The stringer is sewn to the tape 10 by a thread 18 such that each bight portion 38 of the heel portions 28 is placed closely adjacent the tape edge 12, the tape is then folded lengthwise to provide a folded edge such that when closed the fastener is concealed behind folded margins 15 in the tapes 10.