baber/WOPTO huggingface dataset:
Patent GB-1076848-A (GB)
Title: Process for preparing high-moleculare weight paraffinic hydrocarbons from carbon monoxide and hydrogen
IPC: C08G61/04
Filed: 1964-01-08
Abstract: High molecular weight, i.e. above 50,000, paraffinic hydrocarbons are obtained by reacting carbon monoxide and hydrogen at 80-135 DEG  C. at pressures of 100-3000 atmospheres in presence of an organic hydrocarbon, e.g. nonane, or halohydrocarbon solvent medium capable of dissolving the high molecular weight paraffinic hydrocarbon at the reaction temperature and in presence of a finely divided ruthenium catalyst prepared in situ by reaction of highly active ruthenium oxide with the organic solvent medium, the high molecular weight paraffinic hydrocarbon subsequently being recovered from the ruthenium - hydrocarbon complex formed.  The catalyst may be prepared by (i) activating RUO2 by irradiation with proton, neutron or electron rays or with electromagnetic radiation followed by reaction with the organic solvent medium, (ii) heating RUO2 to 110 DEG  C. for 5 hours in a vacuum of at least 10-4 Torr, or (iii) introducing RUO4 which may also be irradiated if desired into the solvent medium. The reaction medium preferably contains an alkali, e.g. 1-5% by weight of K2CO3 based on the weight of ruthenium in the catalyst material and the paraffin product is obtained by treating the product reaction mixture with hydrogen at 120-150 DEG  C. or with an alcoholic alkaline lye, e.g. alcoholic KOH.  The process may be carried out by using two reactors filled with the solvent medium containing the catalyst material and feeding to the first reactor the reaction gas containing carbon monoxide and hydrogen and feeding to the second reactor containing the reaction product hydrogen gas in order to split the ruthenium-hydrocarbon complex, removing the product, and cycling the catalyst together with the solvent medium from the second to the first reactor.  In a modification, the ruthenium catalyst is replaced by a compound of a Group VIII element of the Mendeleeff Periodic Table, e.g. iron, cobalt, nickel and osmium.  The examples describe the preparation of paraffinic hydrocarbons having mean molecular weights of 51,900; 84,700; 58,800; 105,000; and a further product having a mean molecular weight of more than 100,000.
Patent GB-1201787-A (GB)
Title: Dual pressure relief valve
IPC: F16K17/10
Filed: 1967-11-02
Abstract: 1,201,787. Fluid - pressure servomotors. CATERPILLAR TRACTOR CO. Nov.2, 1967 [Dec.21, 1966] No.49888/67. Heading G3P. [Also in Division F2] A duel relief valve has a spring-loaded dump spool 43 controlling the relief of a passage 14 to reservoir via passage 45, and port 44. Fluid passes through a bore 50 in the spool into chamber 47 to assist the spring-loading and is relieved to reservoir via passages 51, 52 and 53 when the spring-loaded poppet valve 54 is overcome. Fluid pressure in chamber 47 is also communicated to the rear of piston 60 via passages 64, 65 and restriction 63 to assist the spring-loading of poppet valve 53. The communication is controlled by a shuttle valve 66 which acts to connect the passage 65 to either passage 51 or to reservoir via passage 71. The shuttle valve 66 is moved from the position shown wherein due to the increased loading of valve 54 the relief valve operates at a high pressure to one wherein the relief valve operates at a low pressure due to passage 65 being connected to reservoir when fluid pressure acts in passage 70 on moving the shuttle valve 16 to connect to passage 14 to the port 30. Ports 48 in the dump spool graduate the pressure release to port 44. The valve 16 controls the lighting and lowering of earth moving equipment wherein a higher relief pressure is required on lifting to that on lowering.
Patent GB-1031690-A (GB)
Title: Improvements in and relating to cracking hydrocarbons
Inventor: LAVERGNE JEAN-CLAUDE
IPC: C10G47/00
Filed: 1963-12-20
Abstract: Hydrocarbons containing at least 20% of paraffinic hydrocarbons distilling between 5 DEG  and 75 DEG  C. and at least 20% of paraffinic hydrocarbons distilling between 75 DEG  and 150 DEG  C. are cracked by fractionating the hydrocarbons into a light supply fraction at least 75% of which distil between 5 DEG  and 75 DEG  C., and a heavy supply fraction at least 75% of which distils above 75 DEG  C.; contacting the heavy supply fraction with hydrogen and a catalyst comprising at least one metal or metal compound of Group VIa and/or Group VIII and at least one acid cracking constituent; collecting a C1-C4 paraffinic fraction, a light intermediary fraction containing 75% of constituents distilling between 5 DEG  and 75 DEG C. and a heavy hydrogenation-cracked fraction; mixing the light intermediary fraction with the light supply fraction and contacting the resulting mixture with hydrogen in presence of a catalyst containing at least one metal and/or metal compound of Group VIa and/or Group VIII and at least one alumino-silicate molecular sieve having a pore diameter of at least 6 <\>rA; and collecting by fractionation C1-C2, C3-C4 and C5 and higher hydrocarbons. Preferably 80% of the charge hydrocarbons distil at 5 DEG  to 150 DEG  C. The heavy hydrogenation cracked fraction may be recycled into the heavy supply fraction cracking zone and the C5 and higher hydrocarbons may be recycled into the light supply fraction cracking zone.  The metals specified, which may be used as sulphides or oxides, are nickel, molybdenum, tungsten and cobalt and these may be present in the catalyst materials in amounts of 0.5 to 20% of the weight of the catalyst.  Catalyst supports used are silica-alumina, silica-magnesia and boron oxide-silica-alumina and the alumino silicate preferably has pore sizes of 7 to 13 <\>rA.  Both cracking zones operate at 300 DEG  to 500 DEG  C., 15 to 250 p.s.i.g., an L.H.S.V. of 0.2 to 6 and a hydrogen supply of at least 200 litres per litre of liquid hydrocarbon.
Patent GB-1408941-A (GB)
Title: Insecticidal coating compositions
IPC: C09D5/14
Filed: 1972-11-02
Abstract: 1408941 Insecticidal coating compositions SOGEREF 2 Nov 1972 [5 Nov 1971] 50575/72 Heading C3P A contact insecticidal composition is prepared by dissolving or dispersing at least one contact insecticide in a polar organic solvent and mixing the resulting solution or dispersion at ambient temperature, with an emulsified polymer compatible with the solvent. The polymer may be a vinyl polymer, for example of the acrylic type, and the contact insecticide may be of the organophosphorus, organochlorine or carbamate type. Solvents specified are butanol, toluene, o- or mxylene and isobutyl acetate. The polymer emulsion may include fatty acids. The solution preferably contains 1-12 wt. per cent of the insecticide and is preferably used in an amount of from 15-45 wt. per cent of the polymer emulsion. The composition may be coated on to wallpaper.
Patent GB-1515906-A (GB)
Title: Electrical switch
IPC: H01H11/04
Filed: 1975-12-11
Abstract: 1515906 Rotary switches CTS CORP 11 Dec 1975 [16 Dec 1974] 50814/75 Heading H1N The stator contact assembly for a rotary switch comprises a body 80, Fig. 7, of dielectric material carrying fixed contacts 24 with chemically milled wedge-shaped leading edges 34, 40, Fig. 4, for engagement by resilient contacts clips 102 on a rotor body (88). The arrangement avoids the presence of burrs otherwise caused by stamping out the fixed contacts. The Specification describes a photoresist process for chemically milling out the stator contacts from both sides of a strip of metal to form the wedge-shaped edges. After formation the strip is silver plated and moulded in the stator body, the final separation of the contacts from each other being performed by a blanking operation.
Patent GB-1534522-A (GB)
Title: Coupling-device for optical fibres
IPC: H04B10/43
Filed: 1975-12-12
Abstract: 1534522 Coupler for optical fibres PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 12 Dec 1975 [16 Dec 1974] 51003/75 Heading G1A [Also in Division G2] In a directional coupling device for multimode optical fibres 15, 16 a small gap 21 between the end-faces of the fibres in the transparent body 11  causes dispersion of some of the transmitted flux and at least a portion of the dispersed flux is detected by photo-diode 20, the device additionally or alternatively comprising a e.g. GaAs semiconductor laser diode 17 by means of which complementary flux may be introduced into the exit fibre 16. Space 21 and the radial spacer between the fibres and the body 11 are filled with silicone oil or epoxy resin having a refractive index at most equal to that of the body 11 and at least equal to that of the outer zone of the optical fibres. In a further embodiment, Fig. 7 (not shown), the diodes (75, 77) are encased in drops of transparent synthetic resin (76, 78) with external reflecting metal coatings. Complementary flux from one diode (75) is focused via a polished or metallized inclined surface (72) on to the gap between the fibre ends. Dispersed flux from the gap is focused via a similar surface (73) on to the second photodiode (77).
Patent GB-1286284-A (GB)
Title: Method of preparing antifoulant coating
Inventor: DAVIE WILLIAM RAYMOND
IPC: C08L63/00
Filed: 1969-10-17
Abstract: 1286284 Anti-foulant coating USS ENGS & CONSULTANTS Inc 17 Oct 1969 51150/69 Heading B2E [Also in Division C3] Steel substrates are coated with an antifoulant composition prepared by mixing, just prior to application to a substrate, (I) a first component containing a base vehicle of epoxy resin. With either an aromatic pitch or a thermoplastic hydrocarbon resin in proportions of 95-5 to 5-95 parts by wt., and (II) a second component containing a polyamine or polyamide curing agent for the epoxy resin and from 1-10 parts by wt. (per part of curing agent) of an organotin toxicant (RR'R"Sn) n X in which R, R' and R" and C 1-8  alkyl radicals, X is a carboxylate group and n is 1 or 2 (e.g. tributyltin acetate). The resultant mixture contains 90-60% of cured base vehicle and 10-40% by wt. of toxicant. A portion of the toxicant may be present as needle-like crystals. The composition may also contain fillers and solvents.
Patent GB-1405762-A (GB)
Title: Intrauterine contraceptive devices
IPC: A61F6/14
Filed: 1972-11-07
Abstract: 1405762 Intra-uterine contraceptive devices A H ROBINS CO INC 7 Nov 1972 51337/72 Heading A5R An intra-uterine contraceptive device 20 comprises a ring 22 formed by a nose portion 24 and a tail portion 26 joined by two side portions 28, 30, and a plurality of paddle-shaped spuns extending from each of the side portions. Each spur tapers in thickness from root to tip. The root of each of the spurs 40, 42, 44 is narrower than the end portion enabling these spurs to flex towards the ring. The spurs are inclined towards the tail portion and decrease successively in length towards the tail portion. The respective ends 41, 49 of the spurs 40, 48 are further inclined towards the tail portion. Thin webs e.g. 56, 58 are attached to adjacent spurs and to the side portions. A thin membrane 32 is attached to the side portions leaving apertures 34, 36. The device is wider at the nose portion than at the tail portion. The cross-section of the ring is substantially rectangular with rounded corners. The thickness of the ring is increased in the nose and tail portions to enable the ring to buckle first in the side portions. Compressive side forces cause the tail portion of the device to deflect out of the plane of the ring. A retention groove 68 enables a line to be tied to the nose portion. A plurality of rows of spurs may be provided on each side portion. The spurs may lie in or be inclined to the plane of the ring. The device of Fig 7 (not shown), has a web (62') which is not attached to the adjacent spurs e.g. (50') and extends beyond the adjacent spurs. A central membrane (32') is connected by thin membrane bridges e.g, (80, 82) to the ring (22'). The device preferably consists of a piece of integrally moulded plastics material mixed with a radio-opaque material. The device may be provided with a thin coating of e.g. gold.
Patent GB-1485809-A (GB)
Title: Agricultural implement comprising rotatable crop engaging members and a supporting member for the same
IPC: A01D78/10
Filed: 1974-11-27
Abstract: 1485809 Ground support for agricultural implement EXPERT NV 27 Nov 1974 [15 Aug 1974] 51359/74 Heading A1F In a rotary hay rake a dished supporting member 6 is arranged eccentrically to a shaft about which a plurality of crop engaging tines 7 are supported for rotation, the ground contacting portion A of the member 6 is located, in use, near where the tines contact the crop. The supporting member 6 is hollow, may be covered, has a flattened forward section and may be free to rotate about a pin which connects it to the shaft (Fig. 4, not shown), or be connected by a pin to a support which in turn is connected to a supporting frame (Fig 5, not shown), or, as shown, be connected directly to the upright shaft.
Patent GB-1447850-A (GB)
Title: Arrangement for controlling the movement of cards or separate forms in an accounting or other office machine
IPC: B41J11/46
Filed: 1974-11-27
Abstract: 1447850 Selective printers ING C OLIVETTI & C SpA 27 Nov 1974 [27 Dec 1973] 51463/74 Heading B6F Paper handling mechanism in a selective printer comprises rollers 21 driven by a motor 9 through an electromagnetic coupling 22, counting means to count the number of print lines by which the paper is displaced by the rollers 21, the counting means being coupled to the rollers by a second electromagnetic coupling 23, and a clutch 61 whose driving element 62 is coupled to the first coupling 22, and whose driven element 64 is associated with the counting means. The counting means comprises a toothed surface 66 on the driven element 64, which acts on a lever (68, Fig. 1, not shown) to operate a microswitch (72) once for each line of displacement of the paper. In operation, a card inserted into the machine is detected, and fed by the rollers 21 until either its top edge or a punched notch is sensed, whereupon the card feed is stopped with the card in its required position. For printing a succession of lines, the motor is reversed, clutch 61 engaged, normally locked member 35 is released and coupling 23 actuated so that the rollers 21 are driven through the counting means. A card can be ejected by coupling the motor 9 to the rollers 21 through clutch 22.
Patent GB-1441284-A (GB)
Title: Method of and apparatus for controlling timber drying in a closed room
IPC: G05D22/00
Filed: 1973-11-07
Abstract: 1441284 Drying tubes ALFRED LOVGREN BYGGNADS AB 7 Nov 1973 [8 Nov 1972] 51719/73 Heading F4G The invention relates to a method of and apparatus for drying timber; the method comprises the steps of placing the wood in a closed chamber, maintaining the relative or absolute humidity in the room in a predetermined range about a predetermined reference value by periodically ventilating the room whilst the rate of increase of humidity after a ventilation step is within a predetermined range and if the rate falls outside the range the predetermined reference value is changed. The apparatus includes a device 1 which gives out a signal representative of the relative humidity to an amplifier 2. The amplifier 2 is connected to a comparator 3 for comparing the humidity with adjustable upper and lower normal values which give the predetermined range about the reference value, the comparator on the humidity reaching the upper value triggers off actuation of the room ventilating means, e.g. a fan 8. The time between each ventilation is measured by a chromometer 4 programmable from data input means 5. A programmed switch 6 fed from the chromometer 5 functions, when the rate of increase of humidity after a ventilation falls outside a particular predetermined range to alter the predetermined reference value by altering the upper and lower nominal values. A setting means 7 is provided for setting the lowest nominal value, at which value, the timber is sufficiently dry.
Patent GB-1369258-A (GB)
Title: Composite seal
IPC: F16J15/32
Filed: 1971-11-08
Abstract: 1369258 Shaft seals A-T-O Inc 8 Nov 1971 [21 Jan 1971] 51774/71 Heading F2B A composite seal for a telescopic hydraulic actuator comprises first and second rings 54, 56, disposed in axial abutting relation with each other and retained about a reciprocating member for sealing engagement therewith, the second ring being made of a synthetic plastics material of a higher durometer rating than that of the first ring and provided with an annular abutment shoulder 98 which is axially spaced from an end face 60 of the first ring under low pressure of the fluid being sealed. Both the rings may be made of urethane and the hardness of the ring 56 increased by use of a glass fibre filler. The ring 54 is provided with inner and outer sealing lips 71, 82 and under low pressure conditions, Fig. 9, slides over an inclined cam surface 102 to load by a wedging action a sealing lip 96 on the harder ring 56 against the rod and relieve the pressure of its lip 71. Under high pressure conditions, axial movement of the ring 54 is stopped by the shoulder 98. A rod wiper 50, 50<SP>1</SP>, 5011, Fig. 1, may be provided for each seal assembly or combined with the ring (56), Fig. 10 (not shown).
Patent GB-1171928-A (GB)
Title: Automobile Battery Charger.
Inventor: SADA TOMOHIKO
IPC: H02J7/00
Filed: 1966-11-18
Abstract: 1,171,928. Systems depending upon two or more sources; battery charging. SONY CORP. 18 Nov., 1966, No. 51863/66. Heading H2H. A starter motor secondary battery may be recharged sufficiently for operation of the motor, by connecting thereto an activatable inert auxiliary battery having when operative a voltage substantially greater than that of the secondary battery and having an electrical capacity substantially less than that of the secondary battery, and activating the auxiliary battery when required. The auxiliary battery may comprise PbO 2  positive plates, Zn negative plates, and H 2 SO 4  electrolyte, which is kept in a compartment separate from the plates until the battery is activated. The connection may be by means of a plug inserted into an automobile cigarette lighter fitting.
Patent GB-1330976-A (GB)
Title: Machines for cutting keys
IPC: B23C3/35
Filed: 1971-11-04
Abstract: 1330976 Cutting keys COLE NATIONAL CORP 11 Nov 1971 [27 Nov 1970] 52469/71 Headings B3B and B3K A key-cutting machine comprises a master key vice 16, and a blank vice 17, a stylus 18, a rotary cutter 19 and means for moving cutter 19 longitudinally and laterally in accordance with movement of the stylus; the cutter and stylus being mounted on a carriage 21 which is moved to the left during cutting, Fig. 1, by a yieldable drive means, and is moved to the right after cutting by a positive drive means. Carriage 21 is pivotable about and slidable along, a shaft 22, and cutter 19 is rotatable with a shaft 26 mounted on the carriage 21, the shaft being driven by a motor 28 through a belt drive 31, 32, 27. A motor 29 drives a cam 36, Fig. 8, through a gear reduction mechanism 35, and the cam co-operates with two followers 37, 38, follower 38 being axially fixed on shaft 22, and follower 37, being slidable on the shaft and connected to follower 38 by springs 39. A brush assembly 45, Fig. 6, is provided to remove burrs from the cut key 13, and comes into operation during the movement of carriage 21 to the right, Fig. 1. Assembly 45 comprises a first arm 48 adapted to be pivoted and axially slidable on shaft 22, and a second arm 49 connected to arm 48 by a pivot 50 and spring 51, relative pivoting movement of the arms being caused by a rotary cam 53 fixed on cutter shaft 26, such movement bringing brush 46 into or out of engagement with key 13. The machine has a transparent door 61, Fig. 2, which co-operates with a cover 62 to enclose the mechanism of the machine, but this door can be moved to the open Fig. 4 position by pivoting it about a pivot 63, so that the carriage 21 is in an inoperative position and a switch 72 is actuated so as to stop cutter motor 28. In operation, a master key 12 and blank 13 are placed in vices 16, 17, with door 61 open, the keys being clamped by handle 23. Door 61 is pivoted to the Fig. 1 position, so that the cutter and stylus are pivoted into the working position. Motor 28 drives cutter 19, motor 29 rotates cam 36, and due to its engagement with followers 37, 38, carriage 21 is moved to the left, Fig. 1. If there is an unforeseen obstacle to the movement of the stylus or cutter, springs 39 will extend and prevent damage. At the end of the cutting operation the low point on cam 36 engages fixed follower 38 and carriage 21 will be moved to the right, Fig. 1. During this movement brush mechanism 46 comes into play to remove the burrs from key 13. At the end of this movement door 61 is opened, handles 23 are raised, and the keys 12, 13 are removed.
Patent GB-1249115-A (GB)
Title: Liquid fuel injection systems
Inventor: SHUFFLEBOTHAM DAVID
IPC: F02D1/12
Filed: 1967-11-20
Abstract: 1,249,115. Fuel metering and distributing valves. C.A.V. Ltd. Nov.4, 1968 [Nov.20, 1967j, No.52616/67. Heading F1B. [Also in Division G3] In a liquid fuel injection system there is provided in a cylinder 56 formed in the member 52 a pair of delivery passages 3, 4 registering with outlet ports 3a, 4a, means for providing fuel pressure to the ends of the cylinder to provide reciprocatory movement of the shuttle 39, the delivery passages being so positioned to limit the extent of movement of the shuttle 39 by the creation of hydraulic locks in the ends of the cylinder 56. In operation fuel pressure from accumulator 50 acts by way of ports 1, 1a, on the left hand side of the shuttle 39 moving it to the right displacing fuel on the right to flow to an injection nozzle via ports 3, 3a, at a predetermined position fuel is spilt via constant pressure valve 82 when passages 3b, 3c register with spill groove 5 in the shuttle which continues to move until its movement to the right is prevented by the formation of a hydraulic lock. As the distributer 56 rotates passages 1, 3, 3c will move out of communion with passages 1a, 3a, 3a respectively, and deliver passage 4 will register with port 4a and fuel is supplied to the right of the shuttle via port 2, 2a displacing fuel from the left thereof. The spill grooves 5 registering with the ports 3b, 3c and 4b, 4c are helical in disposition hence to vary the quantity of fuel delivered per stroke the shuttle is adjusted angularly with respect to the distributer member. This angular movement is effected by axial movement of the shaft 8 so that relative movement of the pin 12 in the helical slot 11 occurs. Variation in the timing of delivery of fuel is obtained by altering the axial setting of the distributer member 52. This is done by either having the ports which open into the periphery of the distributer or those which open in to the periphery of the bore of helical form. Mounted on the pinion 9 is a cage 58 carrying governor weights 14 which move the shaft 8 against the action of the spring 31 thereby to reduce the quantity of fuel supplied to the engine. The adjustable orifices 19, 17 are in communication with a constant pressure valve 36 which is connected to any pump and the effect of applying the two pressures to the opposite ends of the distributer 52 is to make the axial position of the latter responsive both to the speed of and the load on the engine and so the timing of the delivery of fuel to the engine is varied in accordance with both these factors a shaped piston 83 is provided and its position is varied according to the speed responsive pressure and hence acts as a maximum fuel stop. The speed dependant pressure is also applied to the end of the valve member 27 so that pressure within the accumulator 50 is dependant on the speed of the apparatus.