baber/WOPTO huggingface dataset:
Patent GB-1508043-A (GB)
Title: Trihydroxycholesta-5,7-dienes
IPC: A23K1/16
Filed: 1975-06-04
Abstract: 1508043 1,3,24 - Trihydroxy - cholesta - 5,7- dienes and their derivatives TEIJIN Ltd 4 June 1975 [18 June 1974 9 Dec 1974 (3) 27 Dec 1974 (4)] 44013/76 Divided out of 1508042 Heading C2U Novel steroids of the formula (wherein R 1 , R 2  and R 3  are each H or a protective group removable without changing the structure of the rest of the molecule), including the individual 24-epimers and their mixtures, are prepared by allylic bromination and dehydrobromination of the corresponding 7,8- saturated steroids, in turn prepared by reacting 1α,2α - epoxy - 24 - keto - cholesta - 4,6 - dien- 3-one with an alkali metal and a proton donor in the presence of C.NH 3  or a liquid amine and, when required, protecting one or more of the OH groups. Product ols of the above formula may also be protected, or protecting groups may be removed from products containing protected OH groups. Preferably the #<SP>5</SP>-triols (epimeric mixture) are protected before bromination, particularly by benzoylation (the benzene ring being optionally substituted) in the 3- and 24- positions with optional protection in the 1-position, and are also separated by chromatography using a carrier at least containing SiO 2  into the 24(R)- and 24(S)-epimers after protection but before bromination. Following dehydrobromination and hydrolysis of any protecting groups, the 1α,3#,24(S)- or 1α,3#,24(R)-trihydroxycholesta-5,7-diene or a mixture of the epimers may be recovered by contacting the product as a solution in an inert organic solvent with a carrier containing SiO 2  and having adsorbed thereon non-metallic silver. This serves to separate the required #<SP>5,7</SP>-compound from any contaminant #<SP>4,6</SP>-isomer. 1α,2α - Epoxy - 24 - ketocholesta - 4,6 - dien - 3- one is prepared from fucosterol via 24-ketocholesterol and 24 - keto - cholesta - 1,4,6 - trien- 3-one.
Patent GB-1166272-A (GB)
Title: A Resilient Washer.
Inventor: POIVET HENRI
IPC: F16B21/20
Filed: 1966-10-04
Abstract: 1,166,272. Washers; nuts. A. V. RAYMOND, [trading as A. RAYMOND DRUCKKNOPF UND METALLWARENFABRIK]. 4 Oct., 1966 [4 Oct., 1965], No. 44308/66. Heading F2A. A cup-shaped plastics sealing washer has an inturned lip retaining a spring nut. In use, a washer and nut assembly are pushed on to a bolt 10, and the nut presses the washer against the plate 8 to form a seal. The nut may be retained in the washer by a plate (7), Fig. 2 (not shown).
Patent GB-1399129-A (GB)
Title: Terpolymers
IPC: C02F1/54
Filed: 1972-09-26
Abstract: 1399129 Dewatering sludges GAF CORP 26 Sept 1972 [18 Oct 1971] 44420/72 Heading C1C [Also in Divisions C3 and D2] Novel terpolymers of acrylamide, N-dimethylamino-methyl acrylamide, and a third ethylenically unsaturated monomer of limited solubility in water, are used as flocculants in water treatment, especially to facilitate easy filtering of aqueous suspensions. In an example, a terpolymer of acrylamide, N-dimethylamino-methyl acrylamide and methyl methacrylate is used to ease the filtration of an aqueous sludge.
Patent GB-1469533-A (GB)
Title: Tensioning and/or slack take-up device for flexible material in  sheet or thread form
IPC: D04B15/52
Filed: 1973-09-24
Abstract: 1469533 Tensioning webs NATIONAL RESEARCH DEVELOPMENT CORP 20 Sept 1974 [24 Sept 1973 22 March 1974] 44593/73 and 12860/74 Heading B8R [Also in Division D1] A device for tensioning a web comprises a tube 1 open at both ends and formed with an expanded section 3 into which opens a branch passage 4, a cylindrical unexpanded section 2 having flared sections at both ends, the sum of the lengths of the flared sections being less than the length of the section 2 and the bore of the branch passage 4 being greater than that of section 2. The passage 4 is connected to an air pump for maintaining a pressure differential between the section 3 and the exterior to cause an air flow along the tube which exerts a drag on the web drawn through it. The pump may create a positive pressure differential in which case slack can be taken up as a loop upstream of the tube. In this case also a guide tube 6 is provided. Alternatively the pump may create a negative pressure differential and slack is taken up as a loop drawn into the mouth of branch passage 4. In the Fig. 3 embodiment slack is taken up as a loop 29. The tube may be of rectangular section to accommodate the web. A pressure-sensitive device in the expanded seetion gives a signal in the event of excessive air pressure indicative of web breakage.
Patent GB-1486208-A (GB)
Title: Dual hydraulic braking systems for vehicles
IPC: B60T17/22
Filed: 1974-10-15
Abstract: 1486208 Brake imbalance warning means GIRLING Ltd 16 Sept 1975 [15 Oct 1974] 44594/74 Heading F2F In a device for actuating a warning upon a pressure inbalance occurring in dual brake circuits, the warning continuing until both pressures are restored, a piston 9 is subject at its ends to respective circuit pressures, is slidable in aligned bores 10, 11 in two spaced sleeves 7, 8 working in a bore 2 in a housing 1, abutments (in the form of circlips 14, 15 or shoulders 21, 22) prevent the sleeves moving together, and centralizing springs 12, 13 act on the piston ends. In Fig. 1 the operating lever 6 of a 3 position rocker switch is displaced when the piston is displaced but the lower pressure sleeve, which is displaced by its respective abutment, and the lever 6 are not centralized on removal of the braking pressures as is the piston but on restoration of full braking pressure again. In Fig. 3 an intermediate sleeve 29 has counterboxes in which the circlips 14, 15 are slidable and a groove for actuating an operating rod 28 of a two position switch 9.
Patent GB-1032736-A (GB)
Title: Improvements in ceramic frits
Inventor: BULL JAMES ARTHUR GERALD
IPC: C03C4/00
Filed: 1963-11-12
Abstract: A zirconium-bearing frit, which also contains the oxides of B, Al, Si, an alkali metal and an alkaline earth metal, is made by heating zirconium silicate and the other ingredients to at least 1500 DEG C., when all or almost all of the Zr-containing constituents dissolve in the other constituents, and then quenching the mixture. An electric furnace may be used.  Exemplified temperatures are 1500-1700 DEG  C.  The frit may be used in a ceramic glaze.
Patent GB-1338262-A (GB)
Title: Motorised bridges
IPC: B64F1/305
Filed: 1971-09-27
Abstract: 1338262 Gangways SPERRY RAND CORP 27 Sept 1971 [13 Oct 1970] 44854/71 Heading B7J A gangway or "motorized bridge" 10 comprises one end 12 adapted to be rotatably fixed to a terminal, an extendable and retractable passageway 13 connected between the end 12 and a rotatable cab 14, the passageway being supported by hydraulic cylinders 17 on a truck 16, and control apparatus which is adapted to provide in operation automated alignment of the gangway 10 with a door 36 on a parked vehicle e.g. aircraft 37. The control apparatus comprises switch means to provide initial control voltages to electric drive motors (not shown) which manoeuvre the gangway to a preselected position in response to voltage applied from a remotely located control panel (40), Fig. 2b (not shown); scanning means such as a television camera 20 linked to a television monitor (30), Fig. 2a (not shown), for sighting marker means 33 affixed to the vehicle 37 close to the door 36; sensing means such as an electro-optical device 21 and transducers (not shown) mounted on the gangway 10 for producing positional voltages representing the spatial position of the gangway relative to the terminal and the marker means 33; electronic computing means 22 responsive to the positional voltages for supplying drive voltages to the drive motors to align the cab 14 with the door 36 and into contact with the vehicle 37; and cab control means such as pressure switches 23 for sensing contact of the cab 14 with the vehicle 37 and causing rotation of the cab 14 until its frontal plane is parallel to the vehicle surface in the vicinity of the door 36; and cooperating with the sensing means to achieve complete abutment of the cab against the vehicle. The marker means 33 may include several retro-reflective areas (35), Fig. 6 (not shown), painted with luminescent paint for sensing by electro-optical devices including an ultraviolet light transmitter and a plurality of receivers (80, 81 and 82); or may be a single retro-reflective strip (35), Fig. 2a (not shown), surrounded by a non-reflective area (34) and sensed by an electro-optical device including a collimated light beam transmitter and a receiver.
Patent GB-1367742-A (GB)
Title: Peresters suitable for initiating free radical reactions
IPC: C07C407/00
Filed: 1972-09-29
Abstract: 1367742 Peresters AKZO NV 29 Sept 1972 [8 Nov 1971] 45120/72 Heading C2C [Also in Division C3] The invention comprises compounds of the formula in which n is 1 or 2 and R 1  and R 2  represent alkyl groups, the number of carbon atoms in R 1 +R 2  being 3-10 or R 1  and R 2  can be joined to form a cyclohexyl group which can be substituted by groups. Such compounds are prepared by reacting equivalent amounts of cumyl hydroperoxide or bis-(hydroperoxy-isopropyl)benzene and a compound having the formula where R 1  and R 2  are as defined above in a solvent at a temperature from -5‹ to 25‹ C. Examples describe the preparation of cumylperoxy - 2 - ethylhexanoate and cyclohexane carboxylate, dicumylperoxyhexahydroterephthalate and 1,3-bis-(2-ethylhexanoylperoxy-isopropyl) benzene. The products are employed as initiators for the polymerization of such compounds as ethylene, mixtures of polyvinyl alcohol and polyvinyl chloride and hardeners for unsaturated polyester compositions.
Patent GB-1432376-A (GB)
Title: Interconnectors for circuit boards
IPC: H05K3/22
Filed: 1972-09-30
Abstract: 1432376 Automatic control of connector fabrication BRITISH AIRCRAFT CORP Ltd 1 Oct 1973 [30 Sept 1972] 45254/72 Heading G3N An inter-connector 15 Fig. 5 is prepared by punching holes in a strip 8 [tinned copper] in accordance with data on tape 6 controlling punch 7, the tape data representing positions of terminals on a circuit board, Figs. 1, 2 (not shown) to be inter-connected. On the basis of circuit diagram 3, used in the preparation of punched cards 4 indicating terminal pads to be coupled, computer 5 prepares the tape 6 to optimize the interconnections placing as many as possible in each layer of a multi-layer stack of inter-connections, see Figs. 6a - 6c (not shown). The copper strip 8 may be prepared by providing it with sprocket holes (11), Fig. 4 (not shown) and a basic grid of holes (13) before controlled punches, controlled singly or in groups by the tape, form the interconnector pattern. Excess material is cropped while the member is held in thermo compression bonder 16, in which it is possible to encapsulate members to form the multi-layer connecting stack using polyurethane film sandwiching glass cloth (17) (Figs. 6a-6c.) The resulting assemblies are inserted into the board in a "dual-in-line" arrangement with the ends turned down, or end on, the longitudinal strips of inter-connectors being displaced from the centre line, or in a flat arrangement. Computer 5 may control the widths of the inter-connector strips in accordance with the desired current carrying capacity. Use of multilayer inter-connections allows board component density to be increased.
Patent GB-1037959-A (GB)
Title: Tubular reinforced plastic members and method and apparatus for forming the same
IPC: B29C65/08
Filed: 1964-11-06
Abstract: 1,037,959. Making tubes. SOCK FIBERGLAS (CANADA) Ltd. Nov. 6, 1964 [Nov. 14, 1963], No. 45386/64. Heading F2P. [Also in Divisions B5 and F4] A flexible, flat tubular member adapted to be subsequently shaped and hardened comprises an inflatable, imperforate, inner tubing of flexible material surrounded by at least one layer of flexible, helically-wound filamentary reinforcing material impregnated with settable plastic. As shown, the tube T comprises a liner 42 which is extruded or formed from a web 42a and has a longitudinal welded seam 42b, and helically wound webs or filaments 43a ... 43d with intermediate longitudinal webs or filaments 44 of fibreglass impregnated with an epoxy or polyester resin; an outer helically wound band or strip of plastics material 45 has an adhesive sealing strip 46 wound over the abutting edges thereof. Insulation in the form of foamable, thermosetting or thermoplastic granules is applied and is enveloped in strips of plastic heat-sealed at the edges thereof. The tube may also include layers of metallic foil, grids or screens. The web 42a is formed into a tube and inflated to act as a mandrel upon which the webs and filaments are wound or otherwise applied, the tube moving continuously through the winding &c. stations of the tubemaking machine to be finally flattened and wound on to a drum for subsequent shaping and hardening to the required tubular product. In a modification, a flattened tube is drawn between pairs of rollers and injected with a settable resin to impregnate the fibreglass layers.
Patent GB-1030159-A (GB)
Title: Improvements relating to supports for use in mine workings
Inventor: JACKSON WALTER
IPC: E21D17/03
Filed: 1962-12-01
Abstract: 1,030,159. Mine roof supports. BECORIT (RESEARCH) Ltd. and WALTER JACKSON. Nov. 29, 1963 [Dec. 1, 1962], No. 45574/62. Heading E1E. In a mine roof support a forepoling girder 45, Fig. 4, is clamped against a roof arch girder 43 by a wedge 44 reacting on the common pivot pin 16 of two pairs of notched jaws 11, 12, gripping the flange of the girder 43, each pair of jaws being tightened by a respective wedge 30. The wedge 30 is normally gravityloaded and is driven between the jaw 11 and a pin 28 interconnecting arms welded to a pair of plates forming the jaw 12. The wedge 30 is held captive by end pins, maximum opening of the jaws being provided when an inclined face 41 engages the jaw 11. The wedge 44 comprises tapered side plates 53, Fig. 1 (not shown), on a channel 49 embracing the pin 16, the pin diameter being enlarged between the two pairs of jaws. In a modification the notched jaws are shaped to conform to the flanges of a channel girder. It is stated that the wedge 30 may be replaced by a cam, and that the gravity-loading thereof may be assisted or replaced by spring means.
Patent GB-1351266-A (GB)
Title: Apparatus for forming images on continuously moving elements
IPC: G03F7/20
Filed: 1972-10-03
Abstract: 1351266 Contact printing E I DU PONT DE NEMOURS & CO 3 Oct 1972 [4 Oct 1971] 45641/72 Heading G2A A series of copper-clad printed circuit blanks B and sandwiching webs of supported photo-resist material B pass between laminating rolls 1 and 1', the laminate passes into a double sided exposure unit 3, is clamped therein and travels synchronously therewith during full frame exposure, after which the exposure unit returns to its starting position and the exposed laminate passes between delaminating rollers 2 and 2' for removal of the photo-resist support S and S' . For each double frame exposure, each sandwiched blank is clamped in the exposure unit by roll 7 and bar 6 (actuated by air cylinder 9) after being sensed by a photo-cell 12, transparency holders 11 and 11' are urged towards one another until roll plates 39 (Fig.6) contact captured balls (34), the holders are registered with the blank by means of pins 14 (actuated by air cylinders 15), and a vacuum is applied to provide contact between the holders and the blank. After each exposure, the exposure unit is returned to the starting position by an air piston.
Patent GB-1137816-A (GB)
Title: Improvements in and relating to storage containers for liquids
Inventor: GERHARD HELMUT
IPC: B65D88/10
Filed: 1967-10-09
Abstract: 1,137,816. Liquid storage tanks. WESTERWALDER EISENWERK Dr. PAUL GERHARD K.G. 9 Oct., 1967, No. 46086/67. Heading E1T. [Also in Division A4] A storage tank for liquids is composed of outwardly cambered wall panels 7 having reinforcing profiles 9 of arcuate configuration, the panels being arranged to abut to define T-junctions as shown which are then welded together. Intermediate reinforcing sections 15 or 16 may also be provided together with a plastics lining, see Fig. 13, (not shown). For preferred shapes of panels employed. Figs. 3 ... 12, (not shown) should also be referred to.
Patent GB-1090918-A (GB)
Title: Capacitor charging circuit
IPC: H04B10/00
Filed: 1965-11-01
Abstract: 1,090,918. Switching circuits; modulating light; data transmission systems. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 1, 1965 [Feb. 26, 1965], No. 46113/65. Headings H3T, H4F and H4P. A circuit for conversion of binary data to phase modulated code comprises a bridge in which adjacent arms each include a power source and a switch, and the other arms each include an inductor, a capacitor being connected between the common point of the power source arms and the common point of the inductor arms. The capacitor, across which the phase modulated code is developed, may be an electro-optic crystal. The Figure shows one embodiment: by means not shown each negative-going transition in the binary data is applied as a pulse at input 8 and then a pulse at input 9, and vice versa for each positivegoing transition. The pulses control transistor switches, 19, and, loops A and B being resonant at twice the bit frequency, an alternating frequency of maximum amplitude twice that of the source 16a or 16b is developed across the capacitor, there being one cycle per bit. The coupling between inductors 17a, 17b ensures smooth transition from one half cycle to the next. A second embodiment, Fig. 4 (not shown), employs a single inductor (17) in series with the capacitor (14).
Patent GB-1439639-A (GB)
Title: Apparatus for reducing the size of discrete material
IPC: B02C13/14
Filed: 1973-10-03
Abstract: 1439639 Impact pulverizers G J MACDONALD and B A BARTLEY 3 Oct 1973 [5 Oct 1972] 46185/73 Heading B2A Comminuting apparatus particularly for reducing stones to smaller sizes comprises a rotor 1 Fig. 1 mounted on a vertical axis in a housing 8 the material being flung by the rotor into the housing. The rotor and housing retain and hold some material on their surfaces to serve as wear protection. As described, the rotor comprises disks 4, 5 the lower disk 5 being coplanar with the. floor of the housing 8. A hopper 10 is supported on a top cover 9 of the housing and feeds material via a tube 11 into the rotor. Comminuted material is discharged via a chute 12. In operation, material forms a protective layer 13 around the housing. The layer may in some cases be supported by a shelf 16. Liner plates 17 may also be fitted to protect the housing from ricochet. The rotor may have e.g. two or four exit ports 19. Material from the tube 11 is distributed by e.g. a series of coaxial cylinders 20, Fig. 3 into a passage defined between discs 4, 5 and plates 21, 22 secured to the plate 5 and buttresses at 29. Material initially moves towards the plate 22 and forms a protective layer. Wear plates 23 protect the rotor discs 4, 5. These plates are shaped to encourage build up of material between the plates 23 and 22. The tip 24 of the plate 22 is made of e.g. tungsten carbide, and its mounting 25 is replaceable. The rotor is further protected by hard surfacing on its outer surface and in the orifice and also by a rebound ring 26 projecting downwardly within the top of the housing. Fines can be separated off via a duct or ducts 27 in an air flow generated by the rotor or an independent fan which may be above the impeller or separate. Air flow through a pipe 28 sets up a positive pressure in the feed hopper and prevents excess air entering the hopper.
Patent GB-1323504-A (GB)
Title: Electron discharge tubes
IPC: H01J21/06
Filed: 1971-10-05
Abstract: 1323504 Thermionic valves SIEMENS AG 5 Oct 1971 [6 Oct 1970] 46202/71 Heading H1D An electron discharge tube comprises at least three coaxial cylindrical electrodes 1, 2, 3 having terminals 7, 10, 11, 13 connectible outside the tube with corresponding coaxial conductors forming resonant circuits therewith and a cylindrical, coaxial high resistance metal attenuation element 4 between adjacent electrode structures, outside the operative region of the corresponding electrodes and mounted on a terminal ring. A tetrode comprises a wire cathode 1, a control grid 2, a screen grid 3, an anode 4 and attenuation element 14 of ferromagnetic highly permeable CoFe alloy. The element 14 may be used in a triode.
Patent GB-1060607-A (GB)
Title: Encoding apparatus
IPC: G09C5/00
Filed: 1963-11-22
Abstract: 1,060,607. Cheques etc.; fraud preventing. BUNKER-RAMO CORPORATION. Nov. 22, 1963 [Nov. 23, 1962], No. 46231/63. Heading B6A. [Also in Division G5] Apparatus for applying the method disclosed in Specification 959,976 for ciphering a signature or other graphic record comprises a transmitting screen 20, Figs. 2 and 3, having on its underface a pattern such as a series of spaced-apart bands of carbon ink or other impression copying material so that when, for example, a signature is inscribed upon its upper face a series of bits thereof is transferred to an encoding dummy 15, Fig. 1, having on its upper face a corresponding but reversed pattern in which clear spaces match the carbon ink portions of the screen and are separated by ciphering material, such as might be obtained from a medley of random signatures. Typically, the carbon ink bands on the screen may be 0À010 inch wide and be separated by spaces 0À030 inch wide. In use, the screen underface and the dummy upper face are placed in contact and exact registration is ensured by spaced aligning holes 29 and 28 in each which co-operate with pins 35 in lower leaf 31 of a collating frame 30, Figs. 4 and 5 (not shown). A bank passbook may be provided with an encoding dummy 15 incorporated inside its cover and a specimen signature may be obtained thereon by using a transmitting screen 20 comprising a standard signature form with the carbon ink pattern on its underface. After ciphering the signature, the encoding dummy may be protected by a covering of transparent plastics material.
Patent GB-1026539-A (GB)
Title: Improvements in or relating to gastight electrical storage batteries
IPC: H01M10/34
Filed: 1962-12-07
Abstract: 1,026,539. Batteries. SOC. DES ACCUMULATEURS FIXES ET DE TRACTION. Heading H1B. Gassing in a nickel-cadmium alkaline cell is inhibited by using negative electrodes of greater capacity than the positive electrodes, by giving the positive electrodes a precharge, and by spacing the electrodes apart by less than 0À2 mm. The precharge may be achieved by overdischarging the cell whilst open to the air or by using preformed positive electrodes (which are stated to have a charge even when apparently discharged) and partially preformed or unformed negative electrodes. A compressed nylon twill separator may be used.
Patent GB-1315017-A (GB)
Title: Thionophosphoric esters
IPC: A01N57/16
Filed: 1970-09-30
Abstract: 1315017 Urazole derivatives BADISCHE ANILIN- & SODA-FABRIK AG 30 Sept 1970 [1 Oct 1969] 46418/70 Headings C2C and C2P Novel compounds of Formula I where R<SP>1</SP> and R<SP>2</SP> are C 1-6  alkyl, R<SP>4</SP> is hydrogen, C 1-8  alkyl, cycloalkyl or optionally substituted aryl, and R<SP>3</SP> is any of the radicals denoted by R<SP>4</SP>, except hydrogen, or is haloalkyl, C 2-8  alkylthioalkyl or alkoxyalkyl, C 3-8  alkoxycarbonylalkyl or an aliphatic hydrocarbon radical of not more than 8 carbon atoms optionally substituted by phenyl or cyclohexyl, may be prepared by reacting a compound of Formula II with a suitably substituted urazole. The sodium salt of 2-methyl-4-allyl-1,2,4- triazolidinedione-3,5 is prepared by reacting ethyl methylhydrazine carboxylate with allyl isocyanate, and reacting the product of this reaction with sodium methylate to effect cyclization. The mono-sodium salt of 4-phenyl-1,2,4- triazolidinedione-3,5 is prepared by reacting 4-phenyl-1,2,4-triazolidinedione-3,5 with sodium methylate. The compounds of Formula I have insecticidal properties and may be used as the active ingredients in conventional pesticidal compositions.