baber/WOPTO huggingface dataset:
Patent GB-1409473-A (GB)
Title: Ram for a blowout preventer
IPC: E21B29/08
Filed: 1973-06-14
Abstract: 1409473 Wells &c CAMERON IRON WORKS Inc 14 June 1973 [16 June 1972] 50963/74 Divided out of 1409471 Heading E1F  The subject matter of this specification is substantially the same as that disclosed in Specifications 1409471, 1409472 but the claims are directed to a blow out preventer ram having a cutting edge for shearing drill pipe and a recess.
Patent GB-1468189-A (GB)
Title: Method for the direct manufacture of discrete tempered glass sheets
IPC: C03B27/044
Filed: 1974-11-26
Abstract: 1468189 Tempering glass FIFTH RESEARCH CORP 26 Nov 1974 [20 Dec 1973] 51211/74 Heading C1M Discrete tempered glass sheets are formed from an advancing ribbon of glass while it is at a temperature substantially above the strain point. The free end of the ribbon is subjected to rapid chilling to bring the glass to a condition such that it can be scored without causing plastic deformations, scored, broken open along the scored line and the resulting sheet subjected to further chilling to complete the tempering. Scoring is preferably carried out when the temperature differential between the surface and the interior of the glass is at a maximum. The rapid chilling is carried out using a pair of manifolds 17, 18 which direct air through apertures A on to the ribbon. The apertures vary in size so that the amount of chilling air being directed on to the ribbon is reduced as it approaches the scoring device 24 and is raised again after being scored and broken open by ridged roller 27.
Patent GB-1476656-A (GB)
Title: Process for the preparation of radioactively tagged erythro cytes and agents containing them
IPC: G21H5/02
Filed: 1974-11-29
Abstract: 1476656 Radio-active preparations BYKMALLINCKRODT CHEMISCHE PRODUKTE GmbH 29 Nov 1974 [7 June 1974] 51787/74 Heading G6R Erythrocytes (red blood corpuscles) are tagged with a radio-active isotope of gallium, indium or thallium. Tapping may be carried out by adding an isotonic sodium chloride solution or a plasma expander and a diketone complex former to an erythrocyte sediment, introducing a solution of the radio-active isotope, incubating the mixture, and separating the tagged erythrocytes. The plasma expander may be polyvinyl pyrrolidone and the complex former acetyl acetone used in a buffer solution containing tris- (hydroxymethyl)-amino methane and HC1. A composition for use in medical diagnosis by scintigraphic display is made by suspending the tagged erythrocytes in isotonic common salt solution or a solution of polyvinyl pyrrolidone. Examples describe the preparation of compositions containing erythrocytes tagged with 113m In, 111 In, and 67 Ga.
Patent GB-1351150-A (GB)
Title: Inflatable safety devices for protecting an occupant of a motor vehicle
IPC: B60R21/26
Filed: 1971-11-09
Abstract: 1351150 Crash restraint bags REGIE NATIONALS DES USINES RENAULT and AUTOMOBILES PEUGEOT 9 Nov 1971 [19 Nov 1970] 52026/71 Heading B7B A crash restraint bag 6 has an occupant engaging surface 11 inclined at an acute angle a to a vertical plane U to prevent the occupant slipping under the bag during a collision which causes inflation of the bag. The bag comprises chamber 12, 13, Fig. 3, the chamber 12 being ring-shaped and inflated at a higher pressure than cylindrical chamber 13 which may be at atmospheric pressure. In another embodiment, chamber 12, Fig. 5, is of triangular cross-section and surrounds a frusto-conical chamber 13.
Patent GB-1322913-A (GB)
Title: Methods and means for separating isotopes
Inventor: KINNUNEN L J
IPC: B01D59/12
Filed: 1970-11-04
Abstract: 1322913 Separating isotopes VALMET OY 4 Nov 1970 [6 Nov 1969] 52382/70 Heading B1X Isotopes in solution are separated by use of an artificial or natural semi permeable membrane which has no ion-exchange properties and by applying a force which is not electrical, e.g. fluid pressure, centrifugal force or chemical potential.
Patent GB-1223644-A (GB)
Title: Improvements in or relating to taximeters
Inventor: WELLAND JOHN EDWIN THOMAS
IPC: G07B13/04
Filed: 1968-11-05
Abstract: 1,223,644. Taximeters. GEECEN Ltd. 31 Oct., 1969 [5 Nov., 1968], No. 52400/68. Heading G4T. A taximeter includes first, second and third electrically controlled indicators, e.g. lights, means for energizing the first and second indicators when the taxi is in its "For Hire" or "Hired" conditions respectively, a relay having contacts which are closed only when neither of the first and second indicators is energized, the closed contacts them completing a circuit to energize the third indicator, which corresponds to a "stopped" condition of the taxi. As shown, a shaft 17 of an electric motor (not shown), e.g. motor 28 shown in Specification 956,704, can assume three angular positions representing the "For Hire", "Hired" and "Stopped" conditions of the taxi. These conditions are sensed by contacts 25-28 co-operating with shaped profiles 19-22. In the "For Hire" condition shown and with master switch 37 closed, current from the vehicle battery 15A is fed via sockets 9, 8, switch 37, socket 7, line 30, contacts 25, 28 and lines 33 and 47 to illuminate "For Hire" lights 13, 13A and 13B. Current also flows from line 47 through relay coil 39, to keep switch 40 open, and to earth through "Hired" lights 14, 14A, 14B, the current through which is insufficient to illuminate them. When shaft 17 is rotated to represent the "Hired" condition, lights 14, 14A, 14B are illuminated via contacts 26, 27 and the current through coil 39 runs to earth through lights 13, 13A, 13B without illuminating them. In the position of shaft 17 representing the "stopped" condition, neither contact 27 or 28 touches its profile 21 or 22 so that coil 39 is not energized and switch 40 is closed. "Stopped" indicator 15 is illuminated by current from line 52 and switch 40. The taximeter shown also includes means 60, 61 and lights 16 for bringing into effect and indicating the charging of a different tariff, as described in Specification 1,223,645.
Patent GB-1031129-A (GB)
Title: Improvements in or relating to a container for explosives
IPC: F42B3/02
Filed: 1964-12-31
Abstract: 1,031,129. Blasting cartridge assemblies. HERCULES POWDER CO. Dec. 31, 1964 [Jan. 10, 1964 (2)], No. 53081/64. Heading F3A. A blasting cartridge which can be connected to similar cartridges to form a columnar assembly for seismic operations and comprising a casing 1 of thin blowmoulded synthetic plastics, e.g. high density polyethylene, is provided with a male coupling element 4 at one end and a female coupling element 6 at the other end for interconnection with the coupling elements of like cartridges. Each end coupling is provided with threading to produce a locking engagement between the cartridges. This threading may be continuous as shown in Fig. 1 or interrupted by longitudinal slots to facilitate assembly. The coupling 4 has a convex end closure 5 into which the explosive 2 extends from a yieldable seal 3 within the coupling 6. The casing 1 is reinforced by longitudinal ribs 10 and circumferential ribs 11. The explosive 2 may be 49.0% nitroglycerine, 1À5% nitrocotton, 36.0% sodium nitrate, 7.0% pulp, 30% coated cob meal, 2.0% starch, 0.5% bagasse, and 1.0% chalk, all parts being by weight. Projections locking in corresponding indentations (not shown) may be formed in the end couplings. Linear polyethylene is the preferred material for the casing, but polyolefines generally and copolymers and alloys thereof may also be used, as well as materials such as plasticized vinyl chloride. Other explosives which may be used are gelatine dynamites, slurry explosives &c. The seal 3 may be polyethylene or treated paperboard, waxes, resins and waterproofing compounds.
Patent GB-1527600-A (GB)
Title: Video signal analysis
IPC: H04N5/14
Filed: 1974-12-13
Abstract: 1527600 Detecting change in video signal MULLARD Ltd 12 Dec 1975 [13 Dec 1974] 54007/74 Heading H4F [Also in Division G4] A video waveform is amplified at 1 and fed to a clocked sample and hold circuit 5, wherein the sample rate is at least one per picture element period and delay at least one picture element period, and also directly to a difference amplifier 6 which together with threshold means 3 gives an output O/P if the difference between undelayed and delayed is above a certain level. The sample and hold circuit may comprise several, e.g. 5, stages and the clock rate may be a multiple of the picture element frequency, e.g. 4x. In a digital embodiment (Fig. 15) the video is converted to digital at 7 and digital store and adder used.
Patent GB-1338286-A (GB)
Title: Plug and socket fasteners
IPC: B65D25/38
Filed: 1971-11-22
Abstract: 1338286 Stud and socket fastenings PAPIERWERKE WALDHOF - ASCHAFFENBURG AG 22 Nov 1971 [24 Nov 1970] 54110/71 Heading E2B A plastics stud and socket fastening comprises a female part 11 for attachment to an apertured article, and a male part 18 insertable into a bore through the female part wherein one end face of the female part forms an angle of less than 90‹ with the surface of the bore providing an edge, e.g. a knife edge, for sealing engagement with the male portion. The female portion 11 has flanges 12 and 14 and the male portion has a frusto conical portion 20 at one end and a flange at the other end for engaging the female portion. In one modification the bore of the female portion is concave and in another modification, Fig. 3, the male portion has a frusto conical groove 38 and the end surfaces of the flanges of the female portion incline outwardly to provide the edges which engage the male portion. The flange 12 may be secured round an aperture in a container 13.
Patent GB-1294695-A (GB)
Title: Improvements in ceramic-metal or glass-metal seals
IPC: H01J61/36
Filed: 1969-11-07
Abstract: 1294695 Ceramic to metal seals H N MATHEWS 7 Nov 1969 [14 Nov 1968] 54628/69 Heading B3V [Also in Division C1] In a method of sealing glass or ceramic to a metal surface including metallic zirconium, a sealing glass or ceramic is used and the zirconium of the metal surface is oxidized during sealing. The sealing ceramic may be alumina and the metal a Nb-Zr alloy, or Zr which may have small amounts of oxygen, nitrogen, carbon, aluminium, hafnium or tin. The method may be used for sealing an end-cap to the alumina envelope of an alkali-metal vapour lamp. A suspension of finely ground sealing glass is applied to the end of the tube and the assembly of tube and cap heated to the melting point of the sealing glass to form at the metal-to-glass interface metallic zirconium and a mixture of the sealing glass and zirconium dioxide.
Patent GB-1339047-A (GB)
Title: Automatic exposure control and photosensitive transport apparatus  for electron microscopes
IPC: H01J37/22
Filed: 1971-11-25
Abstract: 1339047 Photographic apparatus TESLA NARODNI PODNIK 25 Nov 1971 [18 Dec 1970] 54887/71 Heading G2A An automatic exposure control and photosensitive material transport apparatus for an electron microscope controls the sequence of operations necessary to produce an exposed image. Pivoting of the microscope observing screen 30 closes switches 31, 32 in sequence. Closure of switch 31 actuates an electromagnetic circuit 15 which closes a shutter located between the observing screen and an electron beam source, and also actuates an exposure indicator 21. Closure of switch 32 causes an exposure timing circuit 8 to operate, the length of exposure being controlled by circuit 9 either photoelectrically or manually pre-set. During the exposure an indicator 16 illuminates an exposure counter 25 so that an exposure number is indicated on the sensitive material. After exposure, a motor switch 28 is closed to energize motor 29 to transport the exposed photo-sensitive material to a reserve box.
Patent GB-1281302-A (GB)
Title: Vehicle wheel slip control systems
Inventor: GAEKE EDWARD GORDON
IPC: B60T8/74
Filed: 1970-11-19
Abstract: 1281302 Antiskid braking systems GENERAL MOTORS CORP 19 Nov 1970 [9 Dec 1969] 55058/70 Heading F2F An anti-skid braking system includes a wheelspin sensor 32 in the form of an inertia ring 62 driven by a wheel 12 and having flyweights 64 which move outwardly with speed to urge a force accumulator link to the right as shown and produce a force signal proportional to wheel speed, means 30 to simulate linear vehicle speed and including a a second inertia ring 70 having flyweights 74, means 26 to sense the inclination of the vehicle and hence responsive to road gradient producing a signal which is used to modulate braking pressure, and a brake pressure modulator 16 to modulate braking pressure in accordance with signals received. The system also includes a brake torque sensor 28. The modulator is operated hydraulically or pneumatically under the control of valves 18, 20 having switches 22, 24 with cam followers 146, 148 engaging a cam 38 which is moved in response to signals from the various sensors. The device 26 for sensing inclination of the vehicle includes gears 114, 116 meshing with each other and with a gear 112 and carrying weights 122, 124. Inclination caused by a road gradient causes a torque imbalance and rotation of gear 112 operates a piston 106 to alter the hydraulic pressure in a cylinder 104 and hence in a cylinder 92 which is also acted upon by the brake torque sensor 28 through a piston and cylinder 100, 102.
Patent GB-551677-A (GB)
Abstract: 551,677. 2-Amino-pyrimidine. AMERICAN CYANAMID CO. Sept. 19, 1941, No. 12098. Convention date, Dec. 17, 1940. [Class 2 (iii)] 2-Amino-pyrimidine is prepared from 2-. amino-4-chloro-pyrimidine by treatment in aqueous dispersion with finely divided metallic zinc under alkaline conditions. The alkali which is used may be either a caustic alkali or an alkaline phosphate such as di-, or tri-sodium phosphate. It is prepared to carry out the reaction at the boiling temperature under reflux, and when caustic alkali is used, to add this gradually during the course of the reaction. The zinc dust is preferably used in excess, and such excess is removed at the end of the reaction together with the zinc oxide which is formed. Examples are given of the reaction employing both di-, and tri-sodium phosphate and also caustic soda as the alkaline reagent.
Patent GB-1319395-A (GB)
Title: Apparatus for scraping and conveying bulk material
IPC: E02F3/92
Filed: 1971-11-29
Abstract: 1319395 Dredgers L L SCHNELL 29 Nov 1971 [28 Dec 1970] 55321/71 Heading E1F In apparatus in which material is raised through a dredge pipe 20 by pressurised fluid medium introduced at the lower end of the pipe, the upper end of the pipe is pivotally mounted in a support structure and the lower end of the pipe terminates in a head 36 having opposed intake openings 49, 51 and a pivoted scraper 46 that, when the pipe is being oscillated closes the trailing opening and directs material into the leading opening. The scraper 46 is pivoted on an apertured pipe 58 through which the fluid medium can enter the head. Oscillation of the pipe and the appropriate positioning of the scraper with respect to the head is controlled by jack-actuated cables 66, 68 connected to arms secured to opposed sides of the scraper. A flexible pipe length is included in the dredge pipe to permit of movement of the lower part of the pipe in a plane substantially perpendicular to the plane of pivotal movement of the pipe.
Patent GB-1176333-A (GB)
Title: High Pressure Electric Discharge device and Cathode
IPC: H01J61/073
Filed: 1966-12-12
Abstract: 1,176,333. Discharge lamps. SYLVANIA ELECTRIC PRODUCTS Inc. 12 Dec., 1966 [23 Dec., 1965], No. 55594/66. Heading H1D. A cathode for high pressure electrical discharge devices comprises a sintered tungsten form 14 having a tip 15, a cavity remote from the tip and a refractory metal wire spring 19 retaining emissive material 20 therein. The cavity may be a generally rectangular slot or of circular or elliptical cross-section and the spring is preferably of circular cross-section or may be rectangular or oval cross-section for example. A helical spring is described. More than one cavity and spring may be included in a single cathode. The sintered body 14 is preferably pressure formed around the drawn tungsten wire support rod 16. Arc tube 2 may be of high melting point vitreous material such as quartz.
Patent GB-1375003-A (GB)
IPC: G01V9/00
Filed: 1971-12-02
Abstract: 1375003 Electrostatic separators; centrifuges BARRINGER RESEARCH Ltd 2 Dec 1971 [8 Dec 1970] 55901/71 Headings B2J and B2P [Also in Divisions El and G1] In order to analyse adsorbed gases or vapours in particulates carried by a carrier gas, the particulates are separated from a portion of the carrier gas by means of a cyclone separator or an electrostatic precipitator. The cyclone separator (Fig. 3) may comprise a cone shaped cyclone 22 to which air containing particulates is supplied through a duct 23. The particulates separate from most of the air at a perforated cone shaped separator 24 and are discharged with some of the air through a duct 27 while the rest of the air escapes through the perforations to an escape duct 25 having a flow balance valve 26 therein. The electrostatic precipitator (Fig. 2) may comprise an entry duct 1 for air containing particulates, a grid 2 consisting of a set of grounded wires alternating with a set of negatively charged wires for charging the particulates, a two-part collecting grid 3 held at earth potential for receiving the charged particulates and a pivoted baffle arrangement 4, 7 for diverting most of the air, after it has passed the grid 2, to one side or other of an exit duct 12. A pair of exit tubes 13a, 13b having valves 10, 11 therein are arranged on opposite sides of the duct 12 and lead to a common tube 13 connected to analysing apparatus. In use, with the baffle arrangement in the position shown, charged particulates leaving the grid 2 are directed, in the main, towards that portion of grid 3 nearer the exit tube 13a, the valve 10 being closed and the valve 11 being open. After a short time interval, a control box 14 swings the baffle arrangement so that the particulates leaving the grid 2 are directed towards the other portion of the grid 3 and simultaneously changes the state of both valves 10, 11 and electrically heats the grid portion nearer the exit tube 13a so as to liberate adsorbed gases in the particultaes on that portion of grid 3, these gases passing through the tubes 13a and 13 to the analysing apparatus. After a further short time interval, the control box swings the baffle arrangement back to its original position, the other portion of the grid 3 then being heated to liberate adsorbed gases which are directed to the analysing apparatus via tubes 13a, 13. The process may then be repeated. The baffle 4 need not be perforated.
Patent GB-1148083-A (GB)
Title: Covulcanizable brominated terpolymers
IPC: C08L21/00
Filed: 1966-12-14
Abstract: 1,148,083. Brominated olefin terpolymers. ESSO RESEARCH & ENG. CO. 14 Dec., 1966 [17 Dec., 1965], No. 56030/66. Heading C3P and C3Q. Partially brominated terpolymers of ethylene, propylene and a non-conjugated diolefin containing sites of unsaturation in groups pendant to the main polymer chain, containing at least 1 weight per cent of bromine and in which at least 50 per cent of the unsaturation sites are saturated in the form of dibromide additions on said pendant groups, and in which the main polymer chain is substantially free from bromine substitution, may be prepared by brominating the terpolymers at - 30‹ to 80‹ C. Specified diolefins are 5-methylene norbornene, dihydromyrcene, dicyclopentadiene, 1,4-hexadiene and 3,7-dimethyl-octa-1,4-diene. Bromination may be effected by treating a solution of the terpolymer in an organic solvent with elemental bromine, preferably in solution, or with bromine vapour in an inert carrier gas. The products may be compounded and covulcanized with high unsaturation rubbers such as natural, styrene/butadiene, acrylonitrile/ butadiene, polychloroprene, cis-polybutadiene and cis-polyisoprene rubbers, optionally together with fillers, fibres, plasticizers and softening agents; and used in making motor mounts, window gaskets and tyres. Examples describe the preparation, compounding and vulcanization of brominated copolymers of ethylene, propylene and 5-methylene-2-norbomene or 1,4-hexadiene.
Patent GB-1444120-A (GB)
Title: Manufacture of biuret grou-containing polyisocyanates
IPC: C07C239/00
Filed: 1973-12-10
Abstract: 1444120 Polyisocyanates containing biuret groups BASF AG 10 Dec 1973 [14 Dec 1972] 57058/73 Heading C2C Stable polyisocyanates containing biuret groups are prepared by reacting one or more aliphatic and/or cycloaliphatic diamines with one or more polyisocyanates in such proportions as to give a ratio of NH 2  to NCO of from 1 : 3 to 1 : 100. Preferred aliphatic diamines have the formula wherein X and Y, which may be the same or different, are -CH 2 -, X and Y possibly being attached to each other alternately in different segments or groups and in which n and m are from 0 to 20, their sum being at least 2. The cycloaliphatic diamines preferably have the formula wherein Z is -CH 2 -, -CH 2 CH 2 - or p is 0 or 1 and R and R<SP>1</SP> which may be the same or different are hydrogen, linear or branched C 1  to C 10  alkyl, C 1  to C 10  alkyl ether or halogen.
Patent GB-1443229-A (GB)
Title: Apparatus for classifying sheet-like written material
IPC: B07C3/06
Filed: 1973-12-12
Abstract: 1443229 Document sorting machine TOKYO SHIBAURA ELECTRIC CO Ltd 12 Dec 1973 57547/73 Heading G4M Cards carrying classification codes are read by a reader 2 and the data obtained is decoded to produce a signal indicating a pocket into which the card is to be sorted. The signal is stored (Fig. 2, not shown). The paths 6, A, B, C, D along which the card can travel contain photo-electric card presence detectors P1-P47. Paths A, B, C, D feed the card receiving pockets and contain detectors corresponding to the pockets. The stores for the data have a bit indicating whether the store is currently in use, four bits indicating in which of the four branch passages the desired pocket lies, six bits defining the sequential order of the photo-cell corresponding to the desired pocket and a second receiving current position data on the card corresponding to the store. Data read from the card, e.g. designating pocket D5 and corresponding photo-cell P46, is decoded, the memory is scanned to find a vacant store, the data is entered and the first bit is changed to "1". Code 0001 indicates branch D, 001100 indicates the order of photocell P46, 1111 indicates that the card is at detector P1 and 000010 shows that the next detector is P2. Updated position signals are fed to the store and the two parts of the store are compared until coincidence occurs and a signal is fed to a gate position decision circuit which opens the correct gate GD5 to feed the card to pocket D5. In the absence of a coincidence signal the store is again updated. When the card is received in the pocket the store is cleared.