baber/WOPTO huggingface dataset:
Patent GB-1291486-A (GB)
Title: Ventriculoatrial shunt systems
Inventor: HAKIM SALOMON
IPC: A61M27/00
Filed: 1969-12-23
Abstract: 1291486 Ventriculoatrial shunts S HAKIM 23 Dec 1969 [26 Dec 1968] 62558/69 Heading ASR A ventriculoatrial shunt system comprises a chamber to accumulate cerebro-spinal fluid having inlet and outlet conduits 20, 22 connected to surgical tubing, and flexible outwardly movable wall portions 24, 26, 28, 30 wherein the movable wall portions separate the chamber from an adjacent chamber 32 containing a compressible gas which opposes the motion of the movable wall portions. The chamber for the cerebro-spinal fluid may be shaped like an elongated accordian chamber (Figure 5, not shown) or may comprise (Figure 7, not shown) a cover (46) mounted on a pan (40) both being of plastics e.g. polystyrene or hard silicone rubber, including a membrane (48) of stainless steel or plastics such as polyethylene, forming an air chamber with the cover (46). The tubing comprises catheters (10) and (16) (Fig. 1) may include a check valve (14). The outlet conduit 22 is narrower than the inlet conduit 20. The shunt is connected between the ventricle of the brain and the jugular vein.
Patent GB-1243926-A (GB)
Title: A process for the production of dimethyl 1-methyl-2-(methylcarbamoyl) vinyl phosphate
Inventor: PEARSON DAVID LEE
IPC: C07F9/113
Filed: 1969-12-24
Abstract: 1,243,926. Dimethyl - -1 - methyl - 2 - (methylcarbamoyl) vinyl phosphate. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 24 Dec., 1969 [26 Dec., 1968], No. 62769/69. Heading C2C. Dimethyl 1 - methyl - 2 - (methylcarbamoyl)- vinyl phosphate of formula is prepared by reacting trimethyl phosphite with 2-chloro-N-methylacetoacetamide in the presence of a minor amount of a weak base. Specified bases are potassium and sodium carbonate, bicarbonate and acetate and they may conveniently be present in an amount of 1 to 25 wt. per cent of amide. Organic bases, particularly triethylamine, may also be used.
Patent GB-2025032-A (GB)
Title: Domestic Cooker and Method for its Assembly
IPC: F24C15/08
Filed: 1978-07-07
Abstract: A domestic cooker is constituted by an upper prefabricated hob unit 2 containing gas rings and all of the control devices, and a set of lower panels and components for constituting the cooker housing and the oven compartment. The method of constructing the cooker comprises assembling the hob upper unit and the cooker housing on separate assembly lines and assembling the whole cooker on a third line supplied from the first two lines. <IMAGE>
Patent GB-2005172-A (GB)
Title: An indirect extrusion press
IPC: B21C23/20
Filed: 1978-08-16
Abstract: An indirect extrusion press has a movable crosshead 9 which carries a sealing plate 20 for a billet container 13 and is driven by a press ram 8 against a billet 15 located in the billet container to extrude the billet through an extrusion die 6. Both the movable crosshead 9 and the billet container 13 are provided with hydraulic displacement devices, and the billet container can be coupled to the movable crosshead 9 so that the hydraulic displacement devices can assist the press ram 8 in providing the extrusion force at the beginning and end of extrusion when a larger force is required. <IMAGE>
Patent GB-2012645-A (GB)
Title: Improving spot weld penetration in metal sheets
IPC: B23K11/11
Filed: 1978-11-27
Abstract: A method for welding together face to face metal work sheets 1, 2 having a thickness ratio of, for example, 3:1 or greater, which consists of placing an additional metal sheet 3 against the other face of the thinner work sheet in order to improve the weld penetration of the thinner sheet. The additional metal may be broken away after welding. A continuous seam may be produced by repeated overlapping spot welds.   <IMAGE>
Patent GB-2011980-A (GB)
Title: Bridge construction
IPC: E01D21/10
Filed: 1979-02-01
Abstract: A bridge construction involves the preparation, on land or on a wharf, of a flat assembly site 11 extending transversely to the intended line of communication to be served by the bridge, the building of a tower or pier 16 on the site at the aforesaid line, the erection of a balanced double cantilever bridge section 17 centred on the tower but at the base thereof and extending along the assembly site, testing of the completed structure at ground level, raising of the structure to the upper portion of the tower, swinging the structure to lie along the intended line of communication and securing the structure in that position. Fig. 3 (not shown) illustrates in plan a bridge line 12, transverse assembly site 11, approach roadworks 13, three concrete piers 14, 15, 16, and an access road 10 said to be bounded by temporary shuttering. <IMAGE>
Patent GB-2016252-A (GB)
Title: Crop sprayer
IPC: A01M7/00
Filed: 1979-03-12
Abstract: A crop sprayer comprising a pivot-steering frame has front and rear axles 4, 6 equally spaced from a vertical steering pivot 3, and a spray boom 12 forwardly of a driver's position 20 on the frame, for dispensing liquid in spray form downwardly into the crop. Both a pivot-steering mechanism and a drive transmission to one or two differentials are located wholly above a plane including the two axles. The crop sprayer can move easily through a cereal crop with both sets of wheels traversing the same path, and allows good visibility of the spray boom. <IMAGE>
Patent GB-2016435-A (GB)
Title: Process for the production of a gas containing hydrogen deuteride, HD, in molecular form
IPC: C01B4/00
Filed: 1979-03-16
Abstract: A gas containing hydrogen deuteride, HD is produced from a mixture of H2 and D2 by changing them to a bed of activated granules of a metal or alloy which forms a hydride. The H2 and D2 are absorbed, and gas subsequently discharged contains a "statistical" mixture of H2, D2 and HD.
Patent GB-2044432-A (GB)
Title: Gas supply train for a burner
IPC: F23K5/00
Filed: 1979-03-21
Abstract: A gas train comprising a main gas governor 1 adjacent a main gas supply, feeds gas to a quick opening automatic valve 8, and a slow opening automatic valve 5; and to a secondary or pilot by-pass circuit comprising a pilot gas solenoid valve 23; is provided in two, preferably vertical, planes which conform to the outer configuration of a burner unit utilized therewith. This arrangement allows the gas train to be manufactured and forwarded for installation as a part of a burner unit and this adds considerably to the reliability of the eventual boiler assembly. Further the turning moment at the point of entry of the gas train to the burner unit is substantially reduced thus increasing reliability of the joint. <IMAGE>
Patent GB-2025151-A (GB)
Title: Rotor assembly and method of manufacture therefor
IPC: H02K15/03
Filed: 1979-04-20
Abstract: A rotor assembly for a stepping motor comprises a rotor magnet 15 having an axial bore 15a formed therethrough, and a rotor member 20 formed by moulding a synthetic resin to provide a pinion portion 20b and to constitute a unitary structure with the rotor magnet 15. The rotor member 15 includes first and second large diameter portions 20b, 20c axially spaced from one another between which the rotor magnet 15 is interposed. A method of manufacturing such a rotor assembly for a stepping motor, comprises the steps of placing the rotor magnet 15 between first and second moulding dies 16, 17 having a pinion forming cavity 16b and an annular flange forming cavity 17b, respectively, and injection molding a synthetic resin to form the rotor member 20 as a unitary structure with the rotor magnet 15. Arrangements in which the magnet has a triangular bore, a double bore, and surface recesses are also disclosed, (Figs. 8, 6 and 11, not shown). <IMAGE>
Patent GB-2049615-A (GB)
Title: Hydraulic Excavator
IPC: E02F3/32
Filed: 1979-04-26
Abstract: A hydraulic excavator can be adapted either for normal excavator operation or for grab operation with increased reach and higher lift. The excavator has a boom assembly 12 (comprising a rigidly-interconnected boom 16 and jib 13) which is pivotally-mounted at 11 on the excavator chassis 10 and, for normal operation, (not shown), an arm, such as a lockshoe arm, pivotally- connected at the free end of the boom 16 is actuated by a hydraulic cylinder assembly 28 located on the upperside of the boom and pivotally connected at 17a thereto. For grab operation, the boom 16 and jib 13 are rigidly interconnected by a connecting piece 23, and an arm 19 pivotally- connected at 18 to the free end of the boom 16 is actuated by a hydraulic cylinder assembly 28 located on the underside of the boom 16 and connected to the connecting piece 23. <IMAGE>
Patent GB-2021777-A (GB)
Title: Differential pressure transducer
IPC: G01L9/00
Filed: 1979-04-30
Abstract: A differential pressure transducer 10, primarily for measuring gauge pressure, comprises first and second identical, substantially cylindrical, sealed capsule assemblies, 30, 32, each having a circular diaphragm at one axial end, one being indicated at 44. The capsule assemblies are welded into the opposite ends of a cylindrical housing 16, 18, with the diaphragms facing outwardly. The housing is designed, 14, 20, to permit the transducer to be mounted in the wall of a pipe or chamber, with the diaphragm of one capsule subjected to the fluid pressure in the pipe or chamber and the diaphragm of the other capsule subjected to ambient atmospheric pressure. Respective inductive displacement sensors produce respective signals indicative of diaphragm displacement. The use of sealed capsules ensures that if a diaphragm ruptures, fluid loss cannot occur. Each capsule (Figure 2) may be formed with a tubular portion (38) projecting away from the diaphragm (44) and housing a displacement transducer core (55) mechanically coupled to the diaphragm (44), a set of transducer coils (58, 60) being dispersed around the tubular portion (38). <IMAGE>
Patent GB-2021106-A (GB)
Title: Isopropylbenzene derivatives
IPC: G03C1/85
Filed: 1979-05-14
Abstract: Isopropylbenzene derivatives having the general formula:   <IMAGE>  in which: R<1> to R<4> independently represent a hydrogen atom or a lower alkyl group having up to 4 carbon atoms,  X<(-)> represents COO<(-)> or SO3<(-)>, and  Rf represents a fluorinated organic radical. The compounds may be applied to surfaces liable to be or become negatively charged to suppress spark discharges from such surfaces. Those compounds in which at least two of R<2>, R<3> and R<4> are alkyl, are particularly useful in the top coat of photographic films to eliminate marks caused by spark discharges.
Patent GB-2024242-A (GB)
Title: Stabilization of 1,1,1- trichloroethane
IPC: C11D7/28
Filed: 1979-06-29
Abstract: 1,1,1-Trichloroethane is stabilized with respect to metals in the presence of light and/or gas containing oxygen by incorporating into it 0.1 to 0.6% of tertiary butyl alcohol and tertiary amyl alcohol and possibly 2-methylbut-3-yn- 2-ol; from 0.1 to 5% of at least one epoxide, which is possibly chlorinated and which contains from 3 to 8 carbon atoms; and from 0.1 to 3% by weight of at least one nitroalkane containing from 1 to 3 carbon atoms, the percentages being by weight based on the weight of trichloroethane, with the condition that, on distillation of the stabilized 1,1,1- trichloroethane, the sum of the stabilizing agents concentrated in the head fractions represents from 40 to 60% by weight of the sum of the stabilizing agents concentrated in both the head fractions and the bottom fractions. The resulting compositions can be used for degreasing and/or cleaning metal articles or for dry cleaning textiles.
Patent GB-2033273-A (GB)
Title: Stripping Ingot Moulds
IPC: B22D29/04
Filed: 1979-10-10
Abstract: Apparatus for stripping an ingot from a mould includes a table (3) for supporting the mould (1); a pivoted arm (7) carrying a gripper (4) for engaging and lifting the mould, a support (16) for the mould and a retractable finger (5) for retaining the ingot in the mould; and a pivotable roll table (6). In operation the arm lifts the mould and simultaneously tips it into a position in which it is aligned with the upwardly inclined roll table, so that after retraction of the finger the ingot may slide out of the mould and into the roll table. <IMAGE>
Patent GB-2062209-A (GB)
Title: Gas burner
IPC: F23D14/48
Filed: 1979-10-25
Abstract: A gas burner particularly for a gas-fired boiler, comprising a casing (10) which defines an expansion chamber (15) to which a gas/air mixture is supplied by a fan (13) driven by an electric motor (11), said expansion chamber (15) communicating with a combustion chamber (24) through a transverse perforated plate or wall (16), the flow through the perforations (17) being controlled by a spring loaded main valve member (19) which closes the perforations (17) when the pressure in the expansion chamber is below a predetermined pressure, and a spring loaded pilot valve (23) is provided which is openable at a pressure lower than that of the main valve member (19) for allowing a flow of pilot gas/air mixture to flow from the expansion chamber (15) to the combustion chamber (24). <IMAGE>
Patent GB-2065394-A (GB)
Title: Apparatus for sensing short circuit faults
IPC: H02H3/38
Filed: 1979-11-12
Abstract: In the supply system of a direct- on-line starting induction motor, fault conditions are distinguished from start-up by evaluating (i) the amplitude I of the line current and (ii) the phase angle  PHI between line current and voltage and determining whether the coordinate position of these parameters in the I- PHI  plane (Fig. 7) lies above or below a "reference" line 13'. The line 13' reflects the motor starting characteristics, and since the latter vary with voltage the line 13' is also varied (13'a, 13'b) as a function of line voltage V. In a practical implementation (Fig. 3) faults are detected by determining whether   <IMAGE> where  PHI v is proportional to both  PHI  and V, m is a constant and PHI cv is a function of V. An evaluating arrangement is provided for each phase of the supply. <IMAGE>
Patent GB-2041412-A (GB)
Title: Oxygen top blowing in steel making
IPC: C21C5/32
Filed: 1979-12-12
Abstract: In order to keep within tolerable limits the pick-up of nitrogen from the atmosphere by molten steel when making or refining steel in an LD or other top-blown steelmaking vessel, the gas space in the steelmaking vessel is flushed with noble gas e.g. argon after sampling but before reblowing with oxygen. After the vessel has been charged, it is returned to its upright blowing position; the lance is lowered into the vessel and the molten ferrous metal blown with oxygen. The hood is then raised, the vessel tilted, and a sample taken. If analysis shows that reblowing is necessary, the vessel is returned to its upright position, the hood and the lance are lowered, and argon is passed into the gas space above the molten metal for up to 30 seconds. The steel is then reblown with oxygen. Substantially no argon is passed into the vessel during reblowing.
Patent GB-2057729-A (GB)
Title: Computer with address modification
IPC: G06F12/06
Filed: 1979-12-31
Abstract: A computer system has a microprocessor 101, a memory 108, and communication means 114-117, 120-123. The microprocessor produces a virtual address, format 106, as 2 successive bytes. For communication, byte a (register 103) is all 0's, and this enables a paging signal generator 105 to produce a set of control signals in response to a 5-bit subaddress in byte b. Certain of these signals control the replacement of certain portions of the virtual address 106 by data from the communication means to produce a real address 107, so enabling a larger area of memory to be addressed than byte b could address directly. Other control signals from 105 control coupling between internal data busses (U-bus, M-bus, I-bus). For control of USART communication means, which include their own registers, a control signal from 105 contracts the memory address so that a single shadow USART memory area is written in regardless of which USART is selected, thus simplifying interrupts and maintenance.   <IMAGE>
Patent GB-2049153-A (GB)
Title: Device and method for use in feeding combustion air to a combustible material
IPC: F23B90/02
Filed: 1980-03-13
Abstract: The device has a distributor head (1) and an air inlet line (2). The distributor head (1) includes a chamber into which the air inlet line (2) leads and over which there are distributed a multiplicity of exit holes (6). The end of the air inlet line (2) remote from the distributor means (1) can be connected to a pressure means which blows air along the line (2) and into the chamber so that it is divided into a plurality of jets of air as it is dispersed through the holes (6). In use the distributor head (1) is located in, for example, a charcoal grill and air blown through the holes (6) initiates the burning of the charcoal. The distribution of the holes can not only prevent a blast of air from extinguishing the newly ignited charcoal, but also from blowing dust and sparks out of the grill. The inlet line (2) can be movable relative to the distributor head to allow maneouvrability of the device in the grill. <IMAGE>
Patent GB-2048364-A (GB)
Title: A cable clamp
IPC: H01R13/58
Filed: 1980-03-26
Abstract: A cable clamp comprising two clamping elements, Figs. 2 and 5, which are interengageable so as to define opposite sides of at least one opening through which a cable to be clamped is inserted, the positions of the said two elements relative to one another being adjustable so as to adjust the size of the said at least one opening. The two elements comprise abutting serrated surfaces 13, 22 which are slideable over one another as the two elements are brought together to define the said at least one opening. The said abutting surfaces may be clamped together to maintain their relative positions by means of a nut and bolt at holes 14, 23. <IMAGE>
Patent GB-2049633-A (GB)
Title: Container for Storage and Direct Application of Liquids and Pastes
IPC: B65D47/18
Filed: 1980-04-30
Abstract: A container for storage and direct application of liquids and pastes comprises a body (1) of a mouldable plastics with a tapered dispensing end (2) and a closure plug (5) with air vents (13, 14) therein to avoid build up of pressure during filling and closure. There is also provided a removable cover cap (3) for tapered end (2) which carries a needle (4) for piercing a membrane (7), Fig. 2 (not shown), in end (2) when the cap is inverted and pushed thereover. <IMAGE>
Patent GB-2077197-A (GB)
Title: Minehunting and disposal system
IPC: B63B35/40
Filed: 1980-05-23
Abstract: Mine cleaning is performed by a parent ship having support facilities for a plurality of operational craft and the operational craft are relatively small and provided with known mine detection and destruction equipment. The parent ship is preferably designed and equipped so as to be capable of carrying the operational craft on board, such that the operational craft may be transported to the area of deployment. The operational craft preferably have hulls providing a substantial portion of its buoyancy submerged together with a relatively small water plane area, for example a Small Water Plane Area Twin Hull type craft. This system reduces the number of personnel exposed to a single risk and the operational craft present a low magnetic signature and low noise generation due to their size and these endowments are particularly enhanced if the preferred form of hull is utilised. <IMAGE>
Patent GB-2052723-A (GB)
Title: Plate heat exchanger
IPC: F28F27/02
Filed: 1980-05-28
Abstract: In a stacked-plate heat exchanger, particularly one with a plate pack having, a large number of plates, one of the problems is uneven fluid distribution between the plate interspaces e.g. 3. In accordance with the invention in order to provide an adequate fluid supply to those flow spaces 3 more remote from the inlet/outlet end of a pack having a U- shaped flow arrangement (e.g. as shown) for one at least of the fluids, there is provided in the inlet duct 1 for said fluid a distribution insert 9, adapted to provide increased fluid flow to said more remote spaces 3. The insert 9 preferably comprises a tube 12 having external fins 15, an external annulus 17 and a flow straightening extension 18 mounted on locating rods 13a. In the fluid discharge duct 4 of the heat exchanger there may be provided a collector comprising a flow controlling insert 11 also in the form of a tube, having an inlet aperture 23 and an external annulus 22. <IMAGE>
Patent GB-2053532-A (GB)
Title: Power supply
IPC: G05F1/455
Filed: 1980-06-13
Abstract: A power supply has the AC primary current to a transformer 14 switched on and off by regulator 26 and triac 17 to maintain the DC output 23 of the supply at a desired level. When the energizing current is off, an additional current is applied to the transformer to maintain the core at a level of magnetization such that the full hysteresis characteristic of the transformer is utilized during the next half cycle of operation. This is effected by capacitor 31 which is charged up when the energizing current is on. Resistor 32 prevents it from discharging too quickly. <IMAGE>
Patent GB-2081985-A (GB)
Title: Electrical connector
IPC: H01R13/115
Filed: 1980-08-11
Abstract: An electrical contact (1) engageable with a terminal by moving the contact in a forward direction into engagement with the terminal comprises a forwardly projecting finger (4) having a rear facing shoulder (8) for latching engagement with an oppositely facing rigid shoulder on the terminal, the finger being connected to the remainder of the contact by a cross beam (5), and an auxiliary (7) for unlatching the connector from the terminal by applying torsional deformation to the cross beam, and displacing the finger to release the latching engagement. <IMAGE>
Patent GB-2057342-A (GB)
Title: Moulds
IPC: B29B13/00
Filed: 1980-09-05
Abstract: The present invention relates to a single-split metal mould for the production of mouldings from pre-foamed plastic granules, especially expandable polystyrene foam granules, comprising two double mould shells having metal walls (15, 16) which fit together to define therebetween a moulding cavity (11) the thickness of the mould cavity walls being not more than 7 mm. and preferably being between 2 and 3 mm. <IMAGE>
Patent GB-2058570-A (GB)
Title: Pesticidal compositions
IPC: A01N37/52
Filed: 1980-09-18
Abstract: A liquid pesticidal composition contains amitraz and a carbodiimide. Preferred carbodiimides are di-(2,6-di - isopropylphenyl) carbodiimide and dicyclohexyl carbodiimide. The carbodiimide acts as a stabiliser for the composition to prevent degradation of the amitraz. The composition shows insecticidal and acaricidal properties.
Patent GB-2076805-A (GB)
Title: Substituted diphenyl ethers having herbicidal activity
IPC: A01N37/34
Filed: 1980-10-16
Abstract: Substituted diphenyl ethers represented by the formula:-   <IMAGE>  wherein:  A is oxygen or sulfur;  X is hydrogen or halogen;  Y is halogen or trifluoromethyl;  Z is halogen, nitro, or cyano;  R is hydrogen or C1-3 alkyl; R<1> is C1-3 alkylidene or monosubstituted C1-3 alkylidene, wherein the substituent is C1-4 alkyl; and R<2> is hydrogen, C1-10 alkyl, C1-10 alkoxy, C3-8 cycloalkyl, or an agronomically acceptable ionic species, are used to control weeds.
Patent GB-2089491-A (GB)
Title: Heat Recovery Apparatus
IPC: F23L15/04
Filed: 1980-12-15
Abstract: A heat recovery apparatus comprising a heat transfer element with inner and outer corrugated walls (1) and (2) defined by truncated cones (3) to (12) and (13) to (22) respectively arranged coaxially successively and rigidly connected between themselves by larger (23) to (27) and smaller (28) to (31) bases thereof, the bases gradually decreasing in diameter in the direction of the path of the outflowing gases. The apparatus may be used for preheating air to be supplied to cupola furnaces by heat exchange with exhaust gases leaving the furnace via flue 42. <IMAGE>