baber/WOPTO huggingface dataset:
Patent GB-2046912-A (GB)
Title: A liquid level detector
IPC: G01F23/44
Filed: 1979-05-09
Abstract: A detector for detecting the level of a liquid/air interface below a given reference level, and for detecting any oil which may be present thereat. The detector comprises a reel 12 on which is wound a graduated tape 14 carrying graduations 15, the tape having conductors embedded therein for interconnecting a probe assembly 16 attached to the free end of the tape and an electronic circuit mounted within the core of the reel 12. The probe assembly 16 includes a float switch 20 and electrodes 19, the circuit serving to detect operation of the float switch by an air/liquid interface, and to detect a drop in impedance between the electrodes. The circuit provides outputs which illuminate light-omitting diodes 22, dependent upon whether the probe assembly contacts a conducting fluid (impure water) or a non-conducting fluid (oil). <IMAGE>
Patent GB-2049098-A (GB)
Title: Plastics Springs
IPC: F16F1/42
Filed: 1979-05-17
Abstract: A plastics diaphragm-type spring has the shape shown. The spring may be made integrally with part of a vehicle (e.g. a truck, pram or bicycle) or attached to the vehicle by a bracket. A rod or tube may project through the spring to strengthen it. <IMAGE>
Patent GB-2024365-A (GB)
Title: Piston packing
IPC: F16J15/16
Filed: 1979-06-01
Abstract: Packing 13 in a groove 14 of a piston 12 comprises a first sealing ring 15 of a plastics material in contact with the surface 10' to be sealed, an O-ring 16 which presses the sealing ring 15 against the sealing surface with pretension, and a second sealing ring 17 embedded in the first sealing ring 15 and likewise in contact with the surface 10' to be sealed. <IMAGE>
Patent GB-2020753-A (GB)
Title: Jet thrust lifting device
IPC: B64C27/00
Filed: 1979-06-08
Abstract: Apparatus for producing a lifting force and a directional thrust comprises a stator 12 having a rotor 10 mounted thereon provided with radially extending vanes 14. A prime mover is provided on the stator and is connected to the rotor for producing rotation thereof. A circular deflector 30 is disposed adjacent to the periphery of the vanes of the rotor and is arranged to direct the air flow created by rotation of the rotor so as to produce a lifting force. Sleeve valve means 32, 34 are provided on the stator to direct air flow from a particular point on the circumference of the rotor to produce a lateral thrust in addition to the lifting force. A diffuser assembly 46 is mounted for free rotation immediately beneath the rotor and is arranged to be driven by the air flow produced from the rotor 10 the diffuser assembly 46 being provided with vanes 52 which assist the production of the peripheral air flow and adds to the lifting force produced by the apparatus. <IMAGE>
Patent GB-2050910-A (GB)
Title: Improvements in and relating to punch assemblies
IPC: B26F1/14
Filed: 1979-06-21
Abstract: A spring cassette (1) for a punch assembly for use in punching machines comprises a housing (4) open at both ends and in which an axially compressible spring (6) is retained, the spring defining a central bore (8) for a punch (2) which has an enlarged head (10) dimensionally larger than the bore (8) and by which the punch engages the spring (6). <IMAGE>
Patent GB-2028331-A (GB)
Title: A process for the activation of carboxylic acids
IPC: C07C201/00
Filed: 1979-07-02
Abstract: A process for the activation of carboxylic acids which is useful for the subsequent conversion of said carboxylic acids into their corresponding amides or esters, based on reacting a 2-oxazolidinone with phosphorus pentachloride to give a compound of the formula   <IMAGE> where R1 and R2 are H or C1-4 alkyl; then a salt of the carboxylic acid to be activated is added and the reaction mixture is treated with a compound having an amine or hydroxyl function to give an amide or an ester.
Patent GB-2058168-A (GB)
Title: Balustrade Construction
IPC: E04F11/18
Filed: 1979-09-10
Abstract: A balustrade unit comprising a pair of spaced-apart channel-section members (1, 2), the mouths of which are directed towards each other, the free edges forming a pair of longitudinally-extending flanges (5), a pair of longitudinally-extending spaced-apart engaging elements (4) being provided on and upstanding from the base portion. A plurality of balusters (6) are disposed between channel-section members (1, 2), each having, adjacent each end a transverse slot (7), the two slots in each baluster being parallel and in register with each other and being received between the engaging elements (4), spacers 8 engage elements 4 and in the slots 7. <IMAGE>
Patent GB-2059754-A (GB)
Title: Washing moulded plastics articles
IPC: B08B3/04
Filed: 1979-10-04
Abstract: A method of washing moulded plastics articles comprises dipping the articles in hot water containing detergent, removing the articles from the water while still hot, and allowing the articles to cool and dry. The articles may be shoe heels, which may be made of polystyrene. The articles may be placed in perforated boxes and dipped in the aqueous detergent solution in a tank, which may be provided with heating elements, using a rotary or linear conveying mechanism.
Patent GB-2035309-A (GB)
Title: Diphenyl esters and herbicidal compositions containing them
IPC: A01N39/00
Filed: 1979-10-09
Abstract: Compounds of the general formula   <IMAGE> in which X represents a hydroxylamino or nitroso group; m represents 1 to 5; the or each R<1> any two or more of which may be the same or different, represents a halogen atom or an optionally halo-substituted alkyl group; R<2> represents a hydrogen atom, a carboxy group or a salt or ester thereof, or an alkoxy or alkylthio group optionally substituted by a halogen atom, or by a cyano, acyl or alkoxy carbonyl group; have useful herbicidal properties.
Patent GB-2038072-A (GB)
Title: Record player
IPC: G11B19/02
Filed: 1979-11-22
Abstract: Driving force imparted by a motor is transmitted through a drive shaft (2) to a tubular shaft (33) which is resiliently coupled to a latch shaft having an upper end face (11), and annular flange (32) formed at its outer periphery. At the top of the tubular shaft, is mounted a push button (4) with a plurality of record retaining pieces (4c) which clamp a record disc (3). Depression of the push button (4) closes a motor switch and moves the tubular shaft (3) and record downwards until the record groove engages with an upwardly projecting reproduction stylus (14). A latch piece (12) is normally biased into engagement with flange (32) but when the push button is depressed the latch piece engages on the upper end face (11) of the latch shaft (3') to hold the depressed position during sound reproduction. At the end of sound reproduction or by pushing down a manual switch rod, the latch piece is urged by an actuating link to move away from the latch shaft thus permitting and the tone arm and the push button to return to their initial positions and stop the player. <IMAGE>
Patent GB-2039094-A (GB)
Title: Control system for turbine generators
IPC: F01D21/02
Filed: 1979-11-30
Abstract: Steam flow to a turbine (1) is controlled (10, 11, 12) by the low- ester level signal (17, 18) from three control subsystems: a turbine speed control, (5,6,8,9) including a turbine load sensor (3) and a droop setting means (4), a load limit control (15, 16) and a backward power control (19,20,21,22). A constant pre-turbine steam pressure control (13A, 14A) may also be provided. The speed setting means (8) and the droop setting means (4) are each provided with instantaneous reset means (A, B, C) for automatically setting desired signal levels under certain system operating conditions: When the generator is operated in synchronism with another electric power system, the set speed of the speed control is raised and control is effected by the load limit control or by the backward power control. In asynchronous operation, the load limit signal is raised, the droop set to zero and the speed set to correspond with a reference frequency for isochronous operation. On disconnection of the load, the set speed and the droop are instantaneously decreased to preset values. <IMAGE>
Patent GB-2037487-A (GB)
Title: Method for producing an integrated semiconductor device
IPC: H01L21/74
Filed: 1979-12-04
Abstract: In a method for producing an integrated semiconductor device which contains a vertical epitaxial planar NPN bipolar transistor and isolation columns on an epitaxially grown P-type substrate 1 of (100) orientation, a layer is provided which comprises semiconducting regions of polycrystalline silicon for isolation zones 7 and collector connector zones 8, and monocrystalline type silicon for the remaining parts. The polycrystalline and epitaxial layers are grown in three separate stages using chemical vapour deposition. In the first stage, collector connector zones 8 and isolation zones 7 are grown to a thickness of about 6000 ANGSTROM -8000 ANGSTROM , Fig. 5, at a growth rate of about 1 000 ANGSTROM /minute. The second layer extends beyond the areas already grown in the first stage to the remaining areas of the substrate, Fig. 6, to produce a layer 10 of about 30,000 ANGSTROM , thickness, at a growth rate of 2000 to 3000 ANGSTROM /minute. In the third growth stage, Fig. 7, a layer 12 is grown at a rate of 10,000 to 15,000 ANGSTROM /minute. <IMAGE>
Patent GB-2041344-A (GB)
Title: Process for Manufacture of Phosphoric Acid and Phosphorus Pentafluoride
IPC: C01B25/22
Filed: 1979-12-11
Abstract: A method for the manufacture of phosphoric acid comprises treating calcium phosphate sources such as bone phosphate and phosphate rock with fluorosulfonic acid in the presence of a limited amount of water as catalyst whereby over 98.00% of the phosphorus is converted to volatile compounds that can be subsequently hydrolyzed. A substantial excess of fluorosulfonic acid is utilized to contact the phosphate ore as a slurry. The phosphorus products are primarily phosphorus pentafluoride and phosphorus oxyfluoride. The production of phosphorus pentafluoride is favored by up to one part of water to eight parts of ore by weight in the presence of excesses of fluorosulfonic acid. Hydrolysis of the volatile compounds gives phosphoric acid and hydrogen fluoride. Hydrogen fluoride is then recycled to react with the required sulfur trioxide to make the requirement of fluorosulfonic acid for the process.
Patent GB-2068609-A (GB)
Title: Improvements in or relating to thormocouple simulators
IPC: G06F17/50
Filed: 1980-02-05
Abstract: A thermocouple simulator for generating electrical voltage signals representing a thermocouple output at selected temperatures includes means for selecting the temperature conditions to be simulated and a microprocessor arranged to generate an output signal representing the thermocouple output voltage corresponding to the temperature selected. The microprocessor derives the required output signal by solution of a polynomial equation and is connected to a store containing signal values corresponding to constants required for solution of the polynomial equation and a calculator for calculating the output signal in response to the values of the constants derived from the store and the temperature conditions selected.
Patent GB-2044414-A (GB)
Title: Self-locking descender
IPC: A62B1/14
Filed: 1980-02-21
Abstract: A self-locking descender enabling its user to make a controlled descent down an anchored rope has the rope 12 wound in an S-shape around a movable pulley 16 and a fixed pulley 14, the movable pulley 16 comprising protuberances 50, 52, one of which co-operates with a locking element 54 to form a rope brake operative when a control lever 42 rigidly secured to the pulley 16 is in a top or bottom end position. The user's weight, acting via the snap hook 36 of his harness, effects clockwise rotation of the control lever 42 and urges it into its top end position as shown. When the control lever 42 is moved into an intermediate position (Figure 4, not shown), the rope 12 runs freely over the pulleys 14, 16 allowing descent of the user. The descender is of use in connection with potholing, mountain climbing, and construction sites. <IMAGE>
Patent GB-2045508-A (GB)
Title: Non-abrasive magnetic head cleaning system
IPC: G11B5/41
Filed: 1980-03-11
Abstract: The system includes a cleaning disk made of an absorbent and porous fibrous material which has an area substantially saturated with a liquid cleaning solution. The cleaning disk is rotatably supported within a flat jacket. The jacket includes opposed openings on either side so as to expose a portion of the cleaning disk to enable the disk to come into contact with a magnetic head or heads and its associated pressure pad if one is used. At least one of the openings is enlarged to expose a relatively large portion of the surface of the cleaning disk, so as to facilitate complete saturation of an area of the cleaning disk with a liquid cleaning solution while leaving a portion of the cleaning disk dry. The jacket containing the disk is placed within a flexible disk system which rotates the saturated disk, thus causing the magnetic head(s) and the pressure pad to be cleaned in a non-abrasive fashion with a wet, dry, wet action. <IMAGE>
Patent GB-2046581-A (GB)
Title: Visored face guard, with incorporated anti-misting device
IPC: A62B18/04
Filed: 1980-04-14
Abstract: A visored face guard comprising two chambers: a first chamber 14 communicating with the atmosphere and containing said visor and, in use, surrounding the eyes of the wearer, and a second chamber 15 containing at least the nose of the wearer, which second chamber communicates with the atmosphere and, also with the first chamber through at least one one-way breathing-in valve 18. <IMAGE>
Patent GB-2043009-A (GB)
Title: Method for controlled outgassing of crude oil
IPC: F17C9/02
Filed: 1979-04-09
Abstract: A method for controlled outgassing of crude oil in the cargo tanks of a tanker. The gases are intended to be utilized as an energy source, e.g. for the propulsion of the tanker. The outgassing is accelerated by introducing inert gas (I) and/or tank gas (T) into the tanks with an adjustable flow and thereby achieving an agitation of the oil and an increase of the phase interface liquid-gas. By the fact that said flow is adjustable the outgassing process can be controlled.
Patent GB-2052374-A (GB)
Title: Reinforcing tip for a sawtooth
IPC: B27B33/12
Filed: 1980-05-23
Abstract: The tip includes a core 1 adapted to be received in a groove in the tooth body, the core being shaped at one end 2 to form the tooth edge and being rounded at its other end 3 for location in the groove. Convergent lateral faces 5 define the lateral reliefs and overlap the edges of the groove. The construction of the tip enables successive grinding operations to be carried out on the saw tooth. <IMAGE>
Patent GB-2053816-A (GB)
Title: Balancing of tyred wheels
IPC: F16F15/36
Filed: 1980-06-23
Abstract: It is known to use as balancing means for a vehicle wheel an annular member attached to the wheel and enclosing a series of balls which space themselves out in use, but this can upset the balance of the wheel in the axial direction. It is thus proposed to insert a plurality, e.g. at least three, of rolling elements into the tyre cavity of a tyred wheel which on rotation of the wheel adjust their positions both in the circumferential and axial directions to balance the wheel. The rolling elements may be solid balls, e.g. of lead coated with rubber, or may be hollow elastomeric balls containing an anti-freeze liquid.
Patent GB-2053809-A (GB)
Title: Inflatable buoyancy collars for ships
IPC: B63B43/14
Filed: 1980-07-14
Abstract: A ship, especially a vessel of the Ro-Ro type, is provided around its hull, at about the level of the freeboard deck, with an inflatable collar (19) to improve stability in the event of hull damage. The collar can be stowed, when uninflated, in a recess (20) in the hull side shell with a hinged cover plate (22) to protect it, the cover plate being arranged to abut the hull and transfer heeling loads on the collar to the hull when the collar is inflated. The collar is made in sections, each section being arranged for inflation independently of the other sections. <IMAGE>
Patent GB-2055052-A (GB)
Title: Tubular filter element
IPC: B01D29/15
Filed: 1980-07-29
Abstract: <IMAGE> <H0> Tubular filter elementn
Patent GB-2176878-A (GB)
Title: Hollow charges
Inventor: DADLEY DAVID ALAN
IPC: C06B45/00
Filed: 1980-08-08
Abstract: In a hollow charge, particularly a linear cutting charge a bar 1 formed from a composite of explosive material and a first plastic material has a V-shaped groove 2 with a liner 5 formed from a composite of metal and a second plastic material. The metal may be copper and preferably the first and second plastic materials include the same constituents, e.g. polyisobutylene, 2(diethylhexyl)sebacate and PTFE. The linear cutting charge may include a casing 6 having a spacing portion 7, 8 to maintain an optimum stand-off distance. The casing 6 may further include metallic stiffening strips 14, 15 and a groove filling portion 17 of low density material which may be integrally constructed with the casing from a flexible material such as expanded polyethylene. Alternatively the casing 6 may be of rigid polystyrene or the portion 17 may be a thin walled air filled compartment. <IMAGE>
Patent GB-2084221-A (GB)
Title: A method and apparatus for compensating well control instrumentation for the effects of vessel heave
IPC: E21B21/08
Filed: 1980-09-26
Abstract: A method and apparatus is disclosed for determining the flow rate of drilling fluid flowing from a subaqueous well. The invention may also be used to determine the presence of an abnormal drilling condition during heaving motion of an offshore vessel 20 from which the drilling operation is conducted. The invention eliminates the influence that the expansion and contraction of a telescoping section 32 has on the total volume of drilling fluid within the system by measuring the volume of drilling fluid flowing from the telescoping section 32 during the time period in which the telescoping section moves from a predetermined reference position and returns to the reference position. Alternatively the volume of drilling fluid in the mud tank 48 is measured each time the telescoping section occupies a predetermined reference position. <IMAGE>
Patent GB-2077584-A (GB)
Title: Drain trap
IPC: E03C1/262
Filed: 1980-12-09
Abstract: A waste matter trap for sink or bath drains comprises a main body portion 3, of such dimensions as to fit within, and substantially fill, a bath or sink drain 11, whilst not interfering with the correct positioning of a plug 5. The main body 3 is provided with apertures allowing the passage of liquid, whilst restricting the passage of waste matter. There is also provided an upwardly projecting member 7 for use in removing the trap from the drain. <IMAGE>
Patent GB-2065975-A (GB)
Title: Photon detector
IPC: G01T1/24
Filed: 1980-05-14
Abstract: Apparatus and methods used to obtain image information from modulation of a uniform flux. A multilayered detector apparatus (10) is disclosed which comprises a first conductive layer (14) having two sides, a photoconductive layer (16) thick enough to obtain a desired level of sensitivity and resolution of the detector apparatus (10) when the detector apparatus (10) is exposed to radiation of known energy, one side of the photoconductive layer (16) being integrally affixed to and in electrical contact with one side of the first conductive layer (14), an insulating layer (18) having two sides that is a phosphor that will emit light when irradiated by x-rays, one side of the insulating layer (18) being affixed to the other side of the photoconductive layer (16) and a transparent conductive layer (20) having two sides, one side of the transparent conductive layer being affixed to the other side of the insulating layer (18).
Patent GB-2088807-A (GB)
Title: Attitude of scrapers in single chain scraper conveyor
IPC: B65G19/26
Filed: 1981-02-03
Abstract: Goods in the form of chips, grains, pieces and such like can be transported along a surface with the help of one endless chain 8 having transverse pushers (5) or scrapers pivoted to the chain in such a way that the pusher (5) lies transverse during feeding and is moved out of the way during the return movement. <IMAGE>
Patent GB-2069912-A (GB)
Title: Improvements in scissors
IPC: B26B13/22
Filed: 1981-02-05
Abstract: To assist in making cuts of a desired length, for example in hair cutting or tailoring, without using a separate rule, a pair of scissors 1 is provided on one or both of its blades 2 with a length measuring scale 6. The scale 6, which may be engraved, may be formed on both sides of one or both blades and may extend along at least the major part of one or both handle portions 4. <IMAGE>
Patent GB-2095927-A (GB)
Title: A method of and apparatus for controlling the quantity of electrical energy supplied to a load
IPC: H02M5/257
Filed: 1981-03-26
Abstract: A circuit for controlling the quantity of electrical energy supplied to a load such as a lamp, comprises a triac output device 12, a circuit 14 for storing in digital form a desired delay (X) in triggering triac 12 from the start of each A.C. half cycle, a detector 20 to sense zero-crossings of the A.C. supply, an oscillator 10 triggered into operation by the detector 20 in each supply half cycle, a counter 16 to count the pulses from oscillator 10, and a comparator 18 which turns on the triac 12 which the count in the counter corresponds to the stored delay (X). In an arrangement for control of multiple loads, (Figure 5, not shown), means (26,28) are provided for sorting and storing the liquid delays in ascending order of divation, and means (24) are also provided for sequentially triggering energisation of the associated loads as the count in counter 16 reaches each delay in sequence. When two or more required delays are separated by then a predetermined number of the pulses from oscillator 10, these delays may be grouped on a common level and the associated loads energised simultaneously. <IMAGE>
Patent GB-2092783-A (GB)
Title: Apparatus and Method for Determining Characteristics of Subsurface Formations
IPC: G01V1/28
Filed: 1978-10-09
Abstract: A method of determining a free water parameter of formations surrounding a borehole comprises determining a parameter, eg attenuation, of the water in a region of the formations where substantially all of the water present is free water, eg. a clean sand region. The water content of the formations at a particular depth level of interest is also determined. First and second signals representative of the parameter and the water content thus determined are then combined to determine the free water parameter at the particular depth level of interest.
Patent GB-2082012-A (GB)
Title: Non-coherent fibre-optic bundle image decoder
IPC: H04N7/22
Filed: 1981-06-19
Abstract: An optical imaging system utilises a non-coherent optical fibre bundle 1 to transmit an image 30 from the bundle's distal end 3 to its proximal end 5 where the image is transposed into an incoherent form as a result of the non-coherent fibre arrangement in the bundle 1. The incoherent image is detected by a T.V. camera 36 and the T.V. signals are operated on by a microprocessor 39 to obtain T.V. signals representative of the incident image 30. The microprocessor 39 utilises information held in a storage 40 regarding the positional transpositions of image elements produced by the fibre bundle, this stored information being produced by initially scanning a spot of light over one end of the fibre bundle and noting the position of the fibre illuminated at the other end of the bundle. <IMAGE>