baber/WOPTO huggingface dataset:
Patent GB-1384578-A (GB)
Title: Method of storing a liquid with a view to its distribution in the gaseous state and apparatus for carrying out this process
IPC: F17C11/00
Filed: 1972-09-11
Abstract: 1384578 Storing liquefied gases S T DUPONT 11 Sept 1972 [13 Sept 1971 6 June 1972] 42059/72 Heading F4P A liquefied gas storage container has therein a solid polymer absorbent which swells on contact with the liquefied gas, and releases, when the pressure is reduced, the liquefied gas in a gaseous state. In a disposable container, Fig. 1, the polymer may be in the form of a plurality of shaped pieces 2, the container having an outlet 3. In a refillable container 4, Fig. 2, a filler valve 8 communicates with a liquefied gas storage space 5 which is separated from a quantity 6 of the polymer by a perforated barrier 7, the container having a gas outlet 9. In modifications of the - Fig. 2 container, the polymer may be in the form of a disc abutting or enveloping the barrier 7, Figs. 3, 4 (not shown). The polymer may be located in a perforated cylindrical member mounted over the gas outlet, Fig. 5 (not shown), or it may form a lining on the inner walls of the container, Fig. 6 (not shown). The gas may be, e.g. butane, propane, or pentane, and the polymer is a polysiloxane, natural or synthetic polyisoprene, a cross-linked polyolefin or polyalkylstyrene, a polymethylpentene or a weakly cross-linked butyl rubber.
Patent GB-1446893-A (GB)
Title: Method of manufacturing stratified material
IPC: D04H1/46
Filed: 1973-09-07
Abstract: 1446893 Laminate of fibrous and particulate layers CINDU BV 7 Sept 1973 [7 Sept 1972] 42098/73 Heading B5N In the manufacture of a stratified material comprising a layer of irregular foam particles sandwiched between a carrier layer of fleece or tissue and a covering layer of a fleece, the outer layers are bonded together by needle-punching. The material may be treated or coated for moisture-resistance. The covering layer may be that described in Specification 1,211,894. Uses.\Sound and heat insulation, packaging, pipe wrapping, road making, filtration.
Patent GB-1149775-A (GB)
Title: Thin film resistors
Inventor: FIELD RONALD LESLIE
IPC: H01C17/24
Filed: 1966-09-21
Abstract: 1,149,775. Resistors. ASSOCIATED SEMICONDUCTOR MFRS. Ltd. 21 Sept., 1966, No. 42146/66. Heading H1S. The impedance of a thin (nickel-chrome) film resistor 5, 4, 6 is adjusted to a desired figure by removing a portion of the film by erosion, using a radio frequency alternating current from oscillator 1 passing into the resistor through probe 3, the impedance being monitored at least during the erosion process 2 using an additional (direct) current passing through the resistor. The monitoring current passes through the resistor, and filters 12, 13 into a bridge measuring arrangement 10 containing a standard resistor the value of which is compared with that of the resistor 4, 5, 6. When balance is achieved, or when the impedance of the resistor 4, 5, 6 is within a predetermined percentage of that of the standard resistor, an output signal is applied through lead 14 to cut off the oscillator 1. The resistors may be made with a zero aging characteristic as described in Specification 1,147,340. Various standard resistors may be switched into the bridge circuit if a number of different resistors are being adjusted.
Patent GB-948359-A (GB)
Title: Friction linings for brakes and clutches
IPC: F16D69/02
Filed: 1960-12-07
Abstract: A sintered friction material comprises a metal matrix and a dispensed ceramic phase consisting of alumina, silica, magnesia, kyanite or mullite or mixtures thereof and also including 1-20% by weight of a material selected from the group consisting of the oxides and readily oxidizable compounds of bismuth, antimony and cadmium.  The preferred composition contains by weight 4-85% metal, 2-40% ceramic, the metals specified being Cu, Sb, Fe, Ni and their alloys. Sn and/or Zn, Pb or lead oxide and 4-15% of graphite may also be included. The oxidizable compounds of bismuth, antimony and cadmium may be the sulphides, carbonates, sulphates and oxalates.  Various examples are given of compositions sintered in nitrogen at 1000 DEG  F., 1200 DEG  F. and 1575 DEG  F.ALSO:A sintered friction material comprises a metal matrix and a dispersed ceramic phase consisting of alumina, silica, magnesia, kyanite or mullite or mixtures thereof and also including 1-20% by weight of a material selected from the group consisting of the oxides and readily oxidizable compounds of bismuth, antimony and cadmium.  The preferred composition contains by weight 40-85% metal, 2-40% ceramic, the metals specified being Cu, Sb, Fe, Ni and their alloys. Sn and/or Zn, Pb or lead oxide and 4-15% of graphite may also be included.  The oxidizable compounds of bismuth, antimony and cadmium may be the sulphides, carbonates, sulphates, and oxalates. Various examples are given of compositions sintered in nitrogen at 1000  DEG F., 1200  DEG F. and 1575  DEG F.
Patent GB-920276-A (GB)
Title: Improvements in or relating to irrigation stacks for water cooling
IPC: F28F25/08
Filed: 1959-12-11
Abstract: 920,276. Packing for a liquid cooling tower. FILM COOLING TOWERS (1925) Ltd., and E. A. A. HOWE. Dec. 9, 1960 [Dec. 11, 1959], No. 42234/59. Drawings to Specification. Class 55 (2). Packing for a liquid cooling tower comprises strips of a rigid foamed synthetic resin material, the strips being formed by cutting the material with a blade such as a fine saw. The preferred material is a foamed polystyrene of an oilresistant grade and the packing may have the form described in Specifications 518,373 or 672,244 [Group XII].
Patent GB-955229-A (GB)
Title: Pulse-width converter
IPC: H04Q1/50
Filed: 1962-11-08
Abstract: 955,229. Semi-conductor multi-state circuits. STANDARD TELEPHONES & CABLES Ltd. Nov. 8, 1962 [Nov. 8, 1961], No. 42256/62. Heading H3T. [Also in Division G4] A pulse-width converter uses a monostable trigger circuit to control current flow in a chain of tunnel diodes TDK having different peak currents, one state of the trigger circuit allowing the current flow in chain TDK to increase and the circuit being triggered to the other state for a predetermined time when the peak current of a tunnel diode is exceeded, current increase and triggering occurring alternately for the duration of the pulse to be converted. With switches a<SP>1</SP> and a<SP>2</SP> closed and open, respectively, a switch i is kept open for the duration of the pulse to be converted. When switch i is first opened, a transistor Tr2 conducts and a transistor Trl is cut off, thereby increasing current flow through the diode chain TDK and charging a capacitor C. When the peak current of a diode is exceeded, the potential across the diode jumps to a high value, the voltage jump cutting off transistor Tr2 and allowing capacitor C to discharge through a resistor R. When the capacitor charge has decayed sufficiently, transistor Tr2 conducts again and the peak current of another diode is exceeded. This continues until switch i is closed. In Fig. 2, readout is accomplished at A with switches a1 and a2 open and closed, respectively, the remaining diodes then exceeding their peak currents in turn yielding a series of output pulses at A equal in number to the number of diodes minus the digital equivalent of the input pulse. Switches s<SP>1</SP> and s<SP>2</SP> enable the widths and interpulse spacings of the output pulses to be adjusted. If the interpulse spring is made so small that the circuit connected to A (not described) cannot respond to the change between pulses, a single pulse complementary in length to the input pulse is effectively generated. Fig. 1 (not shown) shows a similar simpler circuit in which read-out is accomplished by a rotary switch tapping in turn the potentials across the diodes.
Patent GB-988741-A (GB)
Title: Improvements in the production of oxidised ethylene polymers
IPC: C08F8/06
Filed: 1962-11-08
Abstract: Oxidized ethylene polymers are produced by oxidizing polyethylene and ethylene/butene-1 copolymers of melt index less than 0.01 by mixing the polymer in solid form with 0.01-5.0% of an organic peroxide capable of generating free radicals at 80-140 DEG  C. and heating the mixture in the presence of free oxygen while maintaining the polymer at at least 80 DEG  C. and below the melting point of the polymer until the carbonyl content is at least 0.05% and the ratio of this to the square root of the melt index is above 0.08.  The organic peroxide, e.g. 0.1-1%, may be a perester, e.g. t-butyl perbenzoate, or a true peroxide, e.g. benzoyl or dicumyl peroxide.  The heating may be effected in a fluidized bed, forced air oven or rotating drum. The peroxide may be added to the polymer in solution in a hydrocarbon, e.g. benzene, which is evaporated off before the oxidation.  The polymer may be in particulate form.  An anti-oxidant, e.g. 4,41-thiobis-(6-t-butylmetacresol), may be added to the oxidized polymer.  The oxidized polymer may be cross-linked, e.g. by milling, with aluminium isopropoxide.  Specification 971,998 is referred to.
Patent GB-1132949-A (GB)
Title: Improvements in and relating to tachogenerators
IPC: G01P3/488
Filed: 1967-09-18
Abstract: 1,132,949. Measuring speed electrically. R.W. REICH. Sept.18, 1967 [Feb.17, 1967], No.42353/67. Heading G1N. [Also in Division G4] A tachogenerator, e.g. for a motor vehicle, comprises a stator 9, Fig.1 of insulating material mounted on a fixed shaft 4 and provided on its periphery with a printed or wire coil 3 or (11), Fig.2 (not shown). The rotor is formed by at least one disc 2 of magnetizable material provided with axially magnetized areas, Figs. 3a, 3b (not shown), around its periphery. As the rotor rotates the coil cuts across the magnetic fields between the magnetized areas and a corresponding annular member (10, 8 of magnetizable material which latter may also be provided with correspondingly located magnetized areas. Pulses are thus generated in the coil 3 or (11), whose repetition frequency is proportional to the speed of rotation of the shaft and which are fed to an appropriately calibrated matter 7. To provide a D.C. Output the areas on each stator are magnetized in the same direction, Fig. 3a (not shown). To provide an A.C. output adjacent areas are magnetized in opposite directions, Fig. 3b (not shown). To measure the number of revolutions performed, indicative of the distance travelled by the vehicle, as well as the speed of revolution, using a rotor of the type shown in Fig. 3a, one area of the rotor is magnetized in the opposite direction to the rest, Fig.4 (not shown), to provide one pulse per revolution of opposite polarity. The output from the coil 3 or (11) is then supplied to the bases of two transistors 14, 15, Fig. 5, one 14, which conducts when a positive pulse is applied and the other 15 when a negative pulse is applied to the base. A voltmeter 7 indicating speed of revolution and an electromagnetic counter or stepping motor and counter indicating the number of revolutions performed are connected in the emitter, collector circuits of the transistors respectively. Alternatively two separate systems of magnetized areas, radially displaced, each with its associated pick-up coil may be used to measure speed of revolution and number of revolutions independently. In a further embodiment a magnet (19), Fig. 6 (not shown) mounted on the end of a pivotal arm co-operating with a cam (23) is moved radially once per revolution of the rotor to produce a pulse in an associated coil (21) on the stator. In this embodiment the two systems are again independent.
Patent GB-1158653-A (GB)
Title: Apparatus for Winding Fabric Webs
Inventor: HARDT ARNOLD JOHANN
IPC: B65H75/14
Filed: 1967-09-18
Abstract: 1,158,653. Winding fabric webs. A. J. HARDT, L. L. LEKANE and M. CLERC. 18 Sept., 1967 [18 Oct., 1966], No. 42365/67. Heading B8R. A fabric web is wound on to a reel which comprises a cardboard tube 12 and polygonal plywood flanges 13, 13<SP>1</SP>, without contact between adjacent layers of the web, and with the selvedges folded and stapled to the flanges. The winding apparatus comprises a pair of axially aligned shafts 4, 4<SP>1</SP> mounted on vertically movable platforms 7, 7<SP>1</SP> attached to the piston rods 8, 81 of fluid jacks 9, 9<SP>1</SP>. The free ends of the shafts facing one another each carry an engaging disc 5, 51 which have conical centering heads 6, 6<SP>1</SP> for penetrating into the ends of the tube 12. Disc 5<SP>1</SP> is moved axially with the shaft 4<SP>1</SP> to grip the reel by a fluid cylinder 11. A motor 10 connected to the shaft 4 drives the reel. A suction bar 14 located above the incommg web (Fig. 2), transversely guides the web and folds upwardly the selvedges thereof. A pair of stapling devices fasten the selvedges to the flanges of the reel, which descends as the web diameter increases.
Patent GB-1284541-A (GB)
Title: Improvements in solid state transducers
Inventor: FAIRHURST JAMES
IPC: G01L9/06
Filed: 1968-09-11
Abstract: 1284541 Measuring pressure electrically J FAIRHURST and J C E J FAIRHURST 14 Nov 1969 [11 Sept 1968] 43185/68 Heading G1N [Also in Division H1] A pressure sensitive transducer, which is to be unaffected by temperature variation, comprises a pair of transistors TR1, TR2, mounted on a common thermally conductive mounting 2, enclosed by a cap 3 with a diaphragm 4, the diaphragm having a stylus 6 pressing on the emitter of transistor TR2. In a circuit arrangement the transistors are mounted in common emitter configuration, the collector of TR1 being connected via resistors to the base of TR2 the output being taken across TR2 emitter to collector. This arrangement is said to compensate for ambient temperature variation and may be used to preasure the blood pressure in an artery.
Patent GB-1099988-A (GB)
Title: Radius cutting tools
IPC: B23B29/04
Filed: 1966-09-28
Abstract: 1,099,988. Planing and slotting. H. STUART. Sept. 28, 1966, No. 43324/66. Heading B3L. A radius cutting tool for use on a planer comprises an arbor 3 encircled by a pair of split, tapered torsion springs 20 and carrying a tool 16 at one end and splines to engage a gear at the other end, a worm 12 in mesh with the gear, and a ratchet device 8, 9 with means (25) for advancing the worm by an adjustable amount. The worm 12 can be locked by a grub screw 14. The member (25) is adjustable on an arm (7) to determine the movement of a slide 21 which advances the pawl 8 against a return spring 19. Either the work or the tool may make the cutting stroke. Cutting forces acting against the tool 16 cause the arbor to move axially and the tapered springs 20 to bind thereon to clamp it securely.
Patent GB-922313-A (GB)
Title: Improvements in or relating to barge connecting means
IPC: B63B21/62
Filed: 1960-12-17
Abstract: 922,313. Coupling vessels. G. STOCK-DALE. Dec. 4, 1961 [Dec. 17, 1960], No. 43500/60. Class 113. Means for aligning and connecting together adjacent buoyant load-carrying units 10, 11 comprises on each unit at least one cableguiding and anchoring structire 12 having two or more pulleys or rollers 16, 17 disposed in spaced vertical relationship. In Fig. 1 the cable 25 is anchored at 25a to the structure 12 of unit 10 and is led via the pulleys on the structures on both units to 25b on unit 11 so that a pull in the direction of the arrow ensures a horizontal force pulling the units together and also a vertical force bringing the units into horizontal alignment. During such alignment rollers 13 on the units prevent undue friction between the bulkheads 10a, 11a until they meet, whereupon the rollers on one bulkhead enter recesses in the other to provide a mechanical lock between the units. Specification 902,908 is referred to.
Patent GB-1523137-A (GB)
Title: Method for the preparation of electrostatographic photoreceptor members
IPC: G03G5/06
Filed: 1975-10-24
Abstract: 1523137 Preparing electro-photographic members XEROX CORP 24 Oct 1975 [4 Dec 1974] 43764/75 Heading G2C Electro-photographic members are prepared by dispersing a photo-conductive pigment in a solution of a charge transport material (CTM) and, if necessary, an inert binder, or an insulating polymer, coating the dispersion on a grounded conductive support, exposing the coating to a common discharge or high intensity D.C. field without contacting its surface with an electrode thus depositing the photo-conductive pigment with some CTM or insulating polymer as a first layer and the remainder of the charge transport material or insulating polymer as a second layer on the support. Alternatively, a non-inherent support may be used and the two layers formed may be stripped off this support and applied to a conductive support, the photo-conductive layer being either the upper or lower layer. Specified photo-conductors are Se, CdSe, CdSSe, PbO, phthalocyanines, indigoids, parylenes, quincridones and bis-benzinidazoles. Specified CTM's are trinitrofluorenone (TNF)  in a binder, polyvinyl carbazole (PVK), PVK/TNF 4:1 mix, triphenylamine in a binder, and other organic photo-conductors in a binder or polyvinylpyrene, -tetraphene, -tetracene or -perylene. Specified insulating polymers are polycarbonates, polyesters, cellulose acetate or acrylic resins. The preferred support is Al with an Al 2 O 3  barrier layer or conductive glass.
Patent GB-1168689-A (GB)
Title: Apparatus for Penetrating Fog with a Light Beam.
Inventor: DEPUTY MARSHALL PIERCE
IPC: F21S8/10
Filed: 1967-09-26
Abstract: 1,168,689. Vehicle lamps. M.P. DEPUTY. 26 Sept., 1967 [12 June, 1967], No. 43771/67] Heading F4R. A vehicle fog lamp comprises a light source, a light filter and means for oscillating at least a major proportion of the light between high and low intensities. The lamp consists of a light source 15 mounted between a parabolic reflector 16 and an auxiliary reflector 18, a set of shutters 13 oscillating on pins 20 between a position in which they are fully open and one in which they are closed under the control of a member 24 driven by an eccentric pin on a disc 26 through an arm 28, and a filter disc 14 which may be blue or amber and is rotatable through 90 degrees about a vertical axis by means of a solenoid 36. The shutters are driven by an electric motor 30 through suitable gearing, energization of the motor causing the solenoid to bring the filter 14 into the operative position. In a modification, the parts 15, 16, 18 are replaced by a sealed beam lamp and a small lamp is also provided in the casing so that the light from the lamp is never reduced to zero. Alternatively, small gaps may be provided between the shutters for the same purpose. In another modification, the shutters are mounted on central axles carrying meshing gears driven from an electric motor.
Patent GB-1501680-A (GB)
Title: Dielectric optical waveguide joints
IPC: G02B6/38
Filed: 1976-10-06
Abstract: 1501680 Joining optic fibres POST OFFICE 6 Oct 1976 [24 Oct 1975] 43860/75 Heading G2J Optical fibres are connected in end-to-end relationship by inserting in a heat-shrinkable plastics sheath having a bore of less than two fibre diameters, at least one end of the bore being filled and then thermally shrinking the sheath. Preferably the sheath is surrounded by a metal tube which is resistance heated to cure the thermal shrinkage. Specification 1458831 is referred to.
Patent GB-975226-A (GB)
Title: Improvements in or relating to hospital trolleys
Inventor: PATTERSON ERIC INGLISS
IPC: A61G7/10
Filed: 1963-11-07
Abstract: 975,226. Hand trucks. SURGICON Ltd. Nov. 7, 1963, No. 43923/63. Heading B7B. A trolley has a tubular framework 12, 14 mounted on castors 20 and to the side of the upper load-carrying platform 18 is hinged an extension 22 to facilitate transfer of the load. The platform 18 may be tiltable by a handoperated screw-and-nut mechanism.
Patent GB-1418318-A (GB)
Title: Keyboard
IPC: H03K17/96
Filed: 1972-09-22
Abstract: 1418318 Photo-electric switch NATIONAL RESEARCH DEVELOPMENT CORP 11 Sept 1973 [22 Sept 1972] 43965/72 Heading G1A [Also in Division G4] The invention relates to a keyboard utilizing photo-electric switches constructed with light pipes. In the switch construction of Fig. 1, an illumination pipe 10 is surrounded by six receiver pipes 11, 14 feeding one or more photo-detectors. The switch is actuated by a spring biased push button 18 having a reflective surface 17. The switch construction can be such that the surface moves either (a) from a position at which it reflects a maximum amount of light to one at which it cuts off light completely (i.e. substantially abutting the ends of the pipes) or (b) from a position further away than said maximum reflection position, to said maximum reflection position. In Fig. 4, a spring-biased member 33 moves from a position (as shown) where it substantially cuts off reflection of light due to a blackened surface, to one in which a reflector 35 in recess 34 into position to actuate the switch. Scratching of light pipe ends is prevented by recessing the pipes. The central transmitter pipe is here associated with nine peripheral receiver pipes, one of which may serve to issue a "ready" signal to a logic circuit. In Fig. 6, the presence of a finger operates the switch, by reflection of light. Obscuration of the pipe ends is prevented by shoulder 42. Switch operation by ambient light in the absence of a finger may be prevented by rendering it sensitive only to modulated light from a half wave rectified mains supplied source. In Fig. 7 (not shown), a cooling arrangement is described for a tungsten filament lamp enclosed in a metal block into which the ends of transmitter bundles are introduced. In Figs. 8, 9, (not shown), the use of the switches in a keyborad is described (see Division G4), each key feeding a unique plurality of detectors, which latter may be provided with a lens to focus light from a plurality of pipes on to it. Alternatively, each detector may be made up of a plurality of small units whose outputs are combined.
Patent GB-1513898-A (GB)
Title: Displacement transducer
IPC: G01D5/36
Filed: 1975-10-27
Abstract: 1513898 Optical displacement transducer BENDIX CORP 27 Oct 1975 [25 Nov 1974] 44171/75 Heading G1A A transducer for measuring displacement along different axes comprises an index piece 14 having more than one optical grating pattern and a grid piece 10 having crossed optical grating patterns 12 corresponding to the index piece patterns to produce fringe patterns therewith, wherein each index piece pattern comprises two spaced sets of lines each set being phase-shifted, e.g. one quarter pitch, with respect to the other set. This phase-shift enables direction of movement to be detected. The index piece 14 is opaque with windows 16,18, 20 and 22. A photo-cell in a photo-detector assembly (42) Fig. 4 (not shown), is provided adjacent each window and the grid and index piece are illuminated by a light source assembly (56). The size of the fringe pattern may be adjusted by set screws (72, 74) Fig. 5 (not shown) which rotate the index piece support (26) with respect to the grid piece support (24) on thrust bearing (62). Relative lateral movement of index and grid is constrained along two orthogonal axes by a cross-guide assembly (28) comprising V-shaped grooves in grid holder (30), a separator member (92) Fig. 2 (not shown), and bridge (58) and eight bearing balls (110, Fig. 2) disposed in the grooves.