baber/WOPTO huggingface dataset:
Patent GB-1327110-A (GB)
Title: Servo control systems
IPC: G05D1/00
Filed: 1970-12-29
Abstract: 1327110 Automatic control UNITED AIRCRAFT CORP 29 Dec 1970 [29 Dec 1969] 61671/70 Heading G3R An error-actuated closed loop control system is disabled in response to the error signal exceeding a threshold level a predetermined number of times in a given interval. In Fig.1, push-pull error signals from the pitch control channel of a helicopter autopilot are applied at terminals 12P, 13P of an amplifier 22 and frequency components above 25Hz and below 1Hz are attenuated by RC circuits associated with amplifiers 30 and 36 respectively. Error signals greater than a predetermined magnitude then cause the output of an amplifier 48 associated with diodes 43-45 to switch from positive to negative so that a flip-flop 60 is operated through a transistor 52 and differentiating circuit 55, 56. If excessive error occurs again before flip-flop 60 is reset by a timer 17, a second flip-flop 63 is operated through a logic circuit 62 to disable all channels of the autopilot by de-energizing a self-holding relay 86 through a diode 15P and transistors 72, 77, 81, 82. Similar circuits 10R, 10Y and 10A also operate through diodes 15R, 15Y and 15A to de-energize relay 86 and disable the autopilot if the error signals in the roll, yaw or altitude control channels are excessive more than once in the predetermined period. Alternatively, the excessive signals in each channel may disable that channel only. In a modification, disabling occurs if, within a predetermined period, an excessive error signal in one sense is followed by an excessive error signal in the opposite sense.
Patent GB-1236160-A (GB)
Title: Improvements in semiconductor integrated circuit devices
IPC: H01L21/762
Filed: 1969-12-22
Abstract: 1,236,160. Semi-conductor devices. NIPPON ELECTRIC CO. Ltd. 22 Dec., 1969 [27 Dec., 1968 (2); 1 April, 1969], No. 62336/69. Heading H1K. Some of the conductive strips interconnecting the elements of a semi-conductor integrated circuit are buried below the epitaxially formed layer containing the elements. Such an integrated circuit comprises a number of elements Q 1  Q 2 , Q 3  Q 4  formed in monocrystalline islands 107, 108, 109, 110 in an epitaxially formed layer on a monocrystalline substrate 101, and isolated from one another by isolating walls 106 of polycrystalline material, interconnection of the elements being achieved by buried conductive strips 102, 103 and surface conductive strips 136, 137, 138, 139 and 140 over insulating surface layer 135. The buried conductive strips are formed on the substrate surface before the deposition of the epitaxially deposited layer. The polycrystalline isolation regions are then grown on bases 105 of 5i0 2  and the monocrystalline regions directly on the substrate. The buried conductive strips are of highly doped semi-conductor material or platinum silicide, or tungsten, chromium, molybdenum or their silicides, or tantalum, titanium or their nitrides, or zirconium. They are insulated as required. The semiconductor material is silicon or germanium, and the breakdown voltage of the isolating walls is improved by diffusion therein of gold or iron in the case of silicon, or copper or nickel in the case of germanium. In another embodiment the buried conductive strips may bridge one another.
Patent GB-713345-A (GB)
IPC: A61B7/02
Abstract: 713,345. Ear instruments. MARR, G. P., and WHITELAW, R. Oct. 3, 1952 [Oct. 3, 1951], No. 23038/51. Class 81(2) An attachment for a stethoscope comprises a cylinder or collar 1 which may be detachably secured around the peripheral edge of the disc-like chest-piece 3 of a stethoscope.
Patent GB-734806-A (GB)
Abstract: 734,806. Pipe couplings; junction pieces. WRIGHT, C. S. March 16, 1954 [March 17, 1953], No. 7333/53. Class 99 (1). A body 1 with a main liquid passage therethrough has means for detachably connecting pipes 19 to the ends of that passage and there is at least one riser outlet 3 formed in the body and leading from the passage. A subsidiary pipe line 28 is connected to each outlet 3 by a take-off device, e.g. an elbow 4, and a valve 6 controls the flow of liquid through each outlet. As shown, the valve 6 closes on to a seating 5 in the outlet 3 and under the action of a spring 20 surrounding a valve spindle 7 slidably and rotatably mounted in a sleeve 23 carried by a web 21. Operation of the valve is effected by a spindle 18 screw-threaded to engage in a nut mounted in or forming part of a boss 8 of the elbow 4; alternatively, the spindle 18 is operated as a slide through a rack and pinion. The elbow 4 is secured by pivoted hooks 10 engaging a flange 11 of the outlet 3 and allowing rotary adjustment of the elbow. Fluid sealing between the pipes 19 and 28 and the body 1 and .elbow 4 respectively is effected by gaskets 12 the skirts 14 of which are forced against the walls of the pipes by pressure of the liquid. The pipes are secured by T-shaped hooks pivotally mounted on the pipes and engaging between spaced-apart lugs 17. Specification 732, 553 is referred to.
Patent GB-2024085-A (GB)
Title: A process and apparatus for fabricating preformed objects of cellulose matted non-woven fabrics
IPC: B27N5/00
Filed: 1978-06-29
Abstract: This invention relates to a process and apparatus for producing preformed objects from cellulose matted non-woven fabric. The forming is accomplished in stepwise fashion by tools 1, 2 whose forming surfaces comprise a plurality of relatively movable component surfaces and are covered by an elastically deformable intermediate layer 4. The intermediate layer 4 may be fixed to a tool or alternatively it may be an endless belt or tape which covers the tool forming surfaces. Deformation forces are transmitted to a fabric blank 3 through the intermediate layer 4. <IMAGE>
Patent GB-2001145-A (GB)
Title: Load-responsive vehicle brake valve linkage
IPC: B60T8/18
Filed: 1978-07-12
Abstract: A load-responsive brake pressure limiting arrangement comprises a brake pressure limiter 2 which is acted upon through a resilient connection 10 by an operating part 13 which is connected to a leaf spring to the vehicle suspension so as to be responsive to alter the maximum pressure applicable to the brakes in dependence on the load carried by the vehicle. <IMAGE>
Patent GB-2003129-A (GB)
Title: Removing heavy metals from water
IPC: C02F1/52
Filed: 1978-08-17
Abstract: According to the present invention we provide a method of controlling the heavy metal content of the water in an aqueous system which comprises incorporating in the system an amount of gamma dicalcium silicate to insolubilise heavy metals present.
Patent GB-2005927-A (GB)
Title: Rotor for an electrical machine
IPC: H01R39/32
Filed: 1978-10-03
Abstract: An electric motor having a hook-shaped commutator about which more than one coil wire per hook is wound with the coil wire making contact with the commutator segment has a hook formed at the winding end face of a commutator segment, the hook base extending below the outer surface of the face, the hook being bent in the direction of a depression which corresponds to the diameter of a first coil wire formed between the hook and the face of the segment and is located at the outer edge of the face so that when a second coil wire is inserted it will necessarily be located in direct contact with the hook and radially above the first wire which will lie, at least in part, below the outer surface of the face.
Patent GB-2031277-A (GB)
Title: Bicarbonate-containing stick deodorant
IPC: A61K/
Filed: 1978-10-24
Abstract: A stick deodorant comprises from 0.1 to 70% of an alkali metal bicarbonate dispersed or dissolved in a soap based gel which comprises a polyhydric alcohol or a mixture of a polyhydric alcohol and a monohydric alcohol solidified or gelled by a minor amount of an alkali metal salt of a saturated C14 to C20 fatty acid gelling agent.
Patent GB-2010468-A (GB)
Title: A Heat Storage Element and a Method of Manufacturing the Same
IPC: F24S90/00
Filed: 1978-12-08
Abstract: A heat storage element which may be heated by solar radiation, comprises a body (1) of fibrous carrier material impregnated with a first substance, which, when heated, produces a gaseous medium and leaves a second substance, or with the second substance, said body being readily permeable to the corresponding medium in the gaseous phase. Heat so stored is recovered by allowing said medium to recombine with said second substance to reconstitute said first substance, with the evolution of heat. In the preferred embodiment, the first substance is a salt hydrate, such as a hydrate of calcium chloride, and said medium is water vapour. The fibrous carrier material (1) may be in the form of sheets of paper or cardboard stacked in spaced relationship to allow heated air to be passed therethrough for charging the heat storage elements, by removal of moisture, or to allow moist air to be passed therethrough, to supply moisture to the salt hydrate, with the evolution of heat, to recover the heat stored. <IMAGE>
Patent GB-2015440-A (GB)
Title: Mobile Lifting Apparatus
IPC: E02F9/02
Filed: 1979-02-26
Abstract: A mobile jib crane comprises a chassis (1) having axles (2, 3) provided with wheels (2', 3'). By operating hydraulic rams (7), the jib (5) can be lowered such that the jib contacts the ground (9) via a support means (8), and by continued operation past such position the wheels (2') of the axle (2) are raised above the ground (see Figure 2). The axle (2) is telescopic, whereby once its wheels (2') have been raised above the ground (9) the distance between them can be increased to enhance the stability of the crane when the jib (5) is thereafter raised to a normal working position. The axle (3) is preferably also telescopic and the spacing between its wheels (3') can in this case be similarly varied after rotating the jib through 180 DEG  by rotating a superstructure (4) on which the jib (5) is mounted. <IMAGE>
Patent GB-2018992-A (GB)
Title: An Echo Regulator for Sonar Systems
IPC: G01S7/529
Filed: 1979-04-06
Abstract: The invention relates to an echo regulator for regulating echos received by an active sonar, particularly with a view to displaying these echos. The echo signals are amplified by a variable-gain amplifier (2) and applied to a high-pass filter (3) connected to the display unit (1). An attenuator (4) is controlled by a circuit for calculating the attenuation of the sonar signals, taking into account the range of the target and the decentering of the direction of the target in relation to the direction of maximum radiation of the sonar. The gain of the amplifier (2) is regulated in dependence upon the attenuation of the attenuator (4). Application to the detection of mines situated near the seabed. <IMAGE>
Patent GB-2022283-A (GB)
Title: Mirrors
IPC: G02B5/08
Filed: 1979-04-23
Abstract: A method of making a flat or curved composite mirror comprises holding a thin glass plate 1 having a polished face 10 by suction on a matrix 4 of high flatness or specific curvature and then securing a thicker, substantially rigid, glass plate 6 having a ground face 9 to the plate 1 by an adhesive layer 5 which hardens without stress. The resulting mirror is removed from the matrix 4. The problem of both grinding and polishing the same element of a mirror is thereby avoided. As shown, the thin plate 1 has a reflective layer 2 and a protective quartz layer 3. The matrix 4 has suction channels 7. <IMAGE>
Patent GB-2019922-A (GB)
Title: Apparatus for closing an oil or gas production well
IPC: E21B33/06
Filed: 1979-05-02
Abstract: Blowout stopper apparatus based upon pinching the production tubing 1 and casing 2 flat by means of a crimper 20 is permanently but detachably mounted in the annulus between the production casing 2 and the surface casing. A hot tap fixture 21 is provided below the crimper 20 for drilling a hole in the casing 2 and the tubing 1 for killing the well with mud. The sections 16 and 17 of the production tubing 1 and casing 2 which are pinched flat are special crimper joints consisting of a pipe member 16 or 17 of steel having a large elongation at break, said pipe element having a more easily deformable inner liner 19 or 18 of an elastomer or a highly ductile metal. The thickness and ductility of said liner 18 or 19 are sufficient to allow said joints to be closed and sealed without being flattened to an extent which would cause cracking of the steel pipe walls 16 and 17, thus providing a sealing of the flattened crimper joints in the tubing 1 and casing 2 in one operation. <IMAGE>
Patent GB-2048047-A (GB)
Title: Powdered Compositions and Methods for the Manufacture of Acidified Milk Products
IPC: A23C9/123
Filed: 1979-05-03
Abstract: The invention provides a powdered composition suitable for mixing with milk to obtain an acidified milk product comprising, per liter liquid, about 10 to about 50 g of an acidogen and about 2.5 to about 20 g of a mild acidic buffer as well as providing a powdered composition suitable for mixing with water to obtain an acidified milk product comprising per liter liquid about 10 to about 50 g of an acidogen, about 2.5 to 20 g of a mild acidic buffer and about 90 to about 240 g dry milk.
Patent GB-2056535-A (GB)
Title: Fireproof doors and surrounds therefor
IPC: E06B5/16
Filed: 1979-08-21
Abstract: The invention relates to fireproof doors and door frames. The door relates to a core 2 which is a mixture of perlite, gypsum and fibreglass, and has intumescent material 20 about the periphery of the core. In addition a frame is provided in one form of the invention in which the frame includes a head, jambs 11 and a sill. The door is mounted for movement within the frame and at least the jambs and head of the frame are formed so as to include a recess 17 of reduced thickness, so that when the door is mounted within the frame and on the application of heat, the heat causes the intumescent material to swell or expand, which seals the door within the frame and engages the intumescent material within the recess or area of reduced thickness. <IMAGE>
Patent GB-2059744-A (GB)
Title: Shoe heels
IPC: A43B21/00
Filed: 1979-10-04
Abstract: A heel particularly a high heel for ladies' shoes, includes a steel reinforcement rod 1 having a small cross-section knurled portion 2 at the "top" end. A polyurethane top piece 5 is secured by a socket 4, leaving a gap 8 to accommodate expansion of socket 4. A process of manufacture comprises securing the rod 1 with the small cross-section portion 2 fitting in a recess in an end of a driver (Fig. 3) and moulding polystyrene therearound. <IMAGE>
Patent GB-2035511-A (GB)
Title: Hydropneumatic self-levelling suspension units of the self- pumping type
IPC: B60G17/044
Filed: 1979-11-07
Abstract: A hydropneumatic self-levelling suspension unit of the self-pumping type is provided with a passage 50 from the working chamber 100 back to the reservoir 134 which opens when the load applied to the vehicle is decreased. If the load is increased and the unit becomes contracted to less than the mean height, liquid is pumped from the reservoir 134 to the working chamber 100 via suction valve 38, a pump chamber in the hollow piston rod, and exhaust valve 40. The unit extends until the piston uncovers the passage 50. There is also a second passage 60 provided in the cylinder wall through which liquid also escapes when the displacement is large, thereby enabling the time required for levelling to be shortened. <IMAGE>
Patent GB-2037558-A (GB)
Title: Rotary grass mowing machines
IPC: A01D34/82
Filed: 1979-12-18
Abstract: A rotary grass mowing machine comprises a casing (3) providing a chamber (11) with a downwardly facing inlet (13) and a lateral passage (15) extending from the chamber, and having a blade (5) disposed within the chamber and rotatable so as to sweep a plane disposed generally parallel to the ground (8). In order to avoid danger from stones discharged with cuttings through the passage, an upright deflector (31) suitably made of plastic or a hinged metal sheet, is mounted within and extends across the passage in a lower part thereof. The defector is spaced a substantial distance from the plane swept by the blade so that stones struck during rotation of the blade are projected against the deflector and fall to ground whilst cuttings entrained in the air flow are discharged through the passage above the deflector. A baffle (27) may also be provided to prevent stones passing above the deflector. <IMAGE>
Patent GB-2046033-A (GB)
Title: Device for triggering a semiconductor switch
IPC: H02M1/08
Filed: 1979-12-28
Abstract: In a slope ignition generator for the triggering of semi-conductors, the slope is generated by the charging of a condensor (47), through an operational amplifier (39), by a stabilised voltage (U) having an amplitude proportional to the frequency of a synchronisation signal (U1) the excursions to zero of which are detected (at 42) to discharge the condensor. The slope voltage is compared (at 49) with a reference threshold voltage (Vr). As a result, the triggering angle of the semiconductors is independent of the frequency. The invention is applicable to the fine adjustment of the speed of an asynchronous polyphase motor having a wound rotor. <IMAGE>
Patent GB-2059968-A (GB)
Title: Water-borne coating composition made from epoxy resin, polymeric acid and tertiary amine
IPC: C08L33/00
Filed: 1980-01-16
Abstract: Water-borne reaction products of (a) carboxyl-functional polymers; (b) polyepoxides; and (c) tertiary amines are useful as film-forming components of coating compositions which can be spray-, flow-, dip-, roller-, or electro- coated. The coating compositions are useful as such or can be crosslinked with crosslinking agents such as aminoplasts and, when coated on metal and paper substrates, they provide coatings of improved properties, including a high degree of flexibility during machining and stamping of the coated articles, corrosion resistance, gloss, hydrolytic stability, and nonadulterating of foods and beverages in contact therewith.
Patent GB-2045502-A (GB)
Title: Coin-separating apparatus
IPC: G07D9/00
Filed: 1980-03-19
Abstract: Apparatus for separating coins (12, 13) of different diameters comprises a fixed guide (15) for supporting one edge of a coin and an in use moving guide (1) spaced apart substantially horizontally and divergingly from the fixed guide (15), for supporting the opposite edge of the coin. One of the fixed or moving guides has an inclined non-supporting surface (4) whereby coins (12, 13) of different diameters, travelling along the fixed guide (15) under the influence of the moving guide (1), drop between and fall away from the guides at different positions where the distance between the guides becomes larger than the diameter of the respective coin (12, 13). Chutes (20, 21) are provided to receive the coins (12, 13) dropping from the guides. <IMAGE>
Patent GB-2081636-A (GB)
Title: Tube extractor
IPC: B25B27/02
Filed: 1980-04-22
Abstract: A tube extractor comprises a piston 13 movable within a cylinder 10 by a supply of fluid through a port 14, a broad member 50 secured to the piston 13 to move therewith, and a mandrel 60 secured to a clutch cage 63 of a clutch means 63, 70, 80 and kept stationary by a stationary clutch sleeve 70 engaging the cage 63 through balls 65 during the initial movement of the piston 13. Thus, a part 61 of the stationary mandrel 60 expands the teeth 51 of the moving broach member 50, during the initial movement, into the tube 31 to be extracted from a sheet 32 of a heat exchanger 30. Immediately thereafter an inner clutch sleeve 80 of the clutch means, pushed along by the piston 13, receives the balls 65 in its groove 82 thereby disengaging the sleeve 70 from the cage 63 and connecting the cage 63 with the moving piston 13. Whence, further movement of the piston 13, broach member 50, inner sleeve 80 is transmitted to the mandrel 60 via its connected cage 63. The mandrel 60 retracts along the moving members 13, 50 and 80 to extract the tube 31. <IMAGE>
Patent GB-2074641-A (GB)
Title: Sun-cut Glass Clamping Device for Automobiles
IPC: F16B2/10
Filed: 1980-04-30
Abstract: A sun-reducing glass 11 is secured by clamp 5 to a bar 8 fixed to a jaw of a clamp whose jaws 1, 2 are mutually located by pins and sockets and held together by closing spring 3 to grip a fixed pane (9). A spring 6 causes the joints of clamp 5 to grip the bar 8. <IMAGE>
Patent GB-2051066-A (GB)
Title: Cephalosporin derivatives suitable for oral administration
IPC: A61K31/545
Filed: 1980-05-30
Abstract: C2-8alkanoyloxymethyl 7-[2-(2- aminothiazol-4-yl)-2-(hydroxy or methoxy)iminoacetamido]-3-methyl- 3-cephem-4-carboxylates (syn isomers) are readily absorbed through the digestive tract and converted in vivo to the corresponding carboxylic acids, which have outstanding antibiotic properties. These esters may be prepared by acylation of the corresponding acyloxymethyl 7- aminodesacetoxycephalosporanate, by esterification of the corresponding acid or by conversion of an undesired acyl group at the 7-position of a cephalosporin compound to the desired 7-[2-(2-aminothiazol-4-yl)-2- (hydroxy or methoxy)iminoacetyl] group.
Patent GB-2080537-A (GB)
Title: Temperature compensation in electrical resistance corrosion measurement
IPC: G01N17/00
Filed: 1980-07-14
Abstract: A probe comprising a corrodible resistance element 1 and a non corrodible resistance element 2 with the same temperature coefficient of resistance is inserted in a corrosive medium 5. A current from source 8 is passed through the elements 1, 2 in series and is controlled to monitor the voltage across element 2 constant; the current I2 being measured as the voltage across series resistance Rs. The voltage across corrodible element 1 (S1, O1) is also determined. Temperature compensation is applied by converting the reference voltage signal across Rs to the same base voltage as signal O1 by amplifiers A2 and A5, multiplying the converted voltage by a scaling factor in amplifier A3 and combining in A4 the resulting voltage with signal A4. The resulting, temperature compensated corrosion signal O2 is displayed on meter 20. To improve accuracy signal O2 may be converted to a frequency which is counted for a predetermined period.   <IMAGE>
Patent GB-2055049-A (GB)
Title: Aerofoils
IPC: B64D17/02
Filed: 1980-07-21
Abstract: An aerofoil structure including an elongate hollow container 1 which, in use provides an aerofoil cross-section between the longer edge regions 5,6 of the container 1. Elongate means 27 are provided for so stiffening the leading edge region 5,6, that when the structure is in use the end regions of the container are permitted to deform out of the plane of the remainder of the width of the container - whilst this remaining part of the container width is kept substantially undeformed.
Patent GB-2080938-A (GB)
Title: Gas fire
IPC: F24C3/00
Filed: 1980-07-29
Abstract: A gas fire has radiants 11 heated by gas burners and behind the radiants a heat exchanger 14. Room air flows over the heat exchanger and is directed upwardly and forwardly into the room through a grill 17. A substantially horizontal surface above the grill 17 supports a translucent fuel simulation 21 within which a lamp 22 drives a spinner 23 to provide a flicker effect. Between the radiants and grill 17 is an illuminated panel 19. <IMAGE>