baber/WOPTO huggingface dataset:
Patent GB-1276178-A (GB)
Title: Radio frequency wattmeter
IPC: G01R21/00
Filed: 1969-08-19
Abstract: 1276178 Power measurement INTERNATIONAL PLASMA CORP 19 Aug 1969 [19 Aug 1969] 41240/69 Heading G1U A wattmeter system for measuring the power transmitted by a generator 11 operating at a single r.f. frequency and transmitting power to a plasma load 14, whose impedance may vary considerably, incorporates an enlarged coaxial section 16, the ratio of the inner to outer diameter of which matches that of the normal coaxial inter-connection 12, in which section is arranged a detector conductor 26 whose mid point is connected via a resistor 28 to the sheath of the section. The resistor 28 matches the characteristic impedance of the detector 26. The two ends of the detector conductor are connectable (via diodes 36, 37 and appropriately set switches) to a meter 33. The detector circuit is formed in two parts, one of which 23 responds to transmitted power while the other 24 responds to reflected power. A variable impedance circuit associated with the plasma load is adjusted to null the reflected power, whereupon the watt meter system correctly indicates the transmitted power (when appropriately set). The system is much more able to withstand high values of reflected power than previous wattmeters.
Patent GB-974055-A (GB)
Title: Improvements in or relating to fencing rails
Inventor: MACMAHON THOMAS
IPC: E04H17/18
Filed: 1962-11-01
Abstract: 974,055. Railings. WAVIN PIPES Ltd. Oct. 25, 1963 [Nov. 1, 1962], No. 41324/62. Heading E1V. Railing comprises horizontal rails 1, each supported intermediate its length and at its ends in sleeves 2, 4 fitted on posts 3, 5, each of the components being made of P.V.C. and the posts being fitted over spikes 9 driven into the ground. The sleeves 4 are formed with a central internal abutment against which an end of each rail 1 bears, the posts being force fits in the sockets 7, 8 of the sleeves and optionally secured with a cement. A second set of rails 1a on sleeves 2a, 4a may be provided.
Patent GB-947145-A (GB)
Title: Improvements in or relating to electromechanical filters
Inventor: RUSSEN ALBERT
IPC: H03H9/62
Filed: 1958-12-24
Abstract: 947,145. Electro-mechanical filters. STANDARD TELEPHONES & CABLES Ltd. Dec. 18, 1959 [Dec. 24, 1958], No. 41706/58. Heading H3U. An electromechanical filter comprises a plurality of torsional resonators 38, 40, 41, 42, 39 of dumb-bell form connected together by separate coupling necks 43, 44, 45, 46. The resonators can be less than half a wavelength long. The resonators 38 and 39 are circularly polarized magnetically and form the cores of transducer units having driving coils 36, 37. At least one of the coupling necks, e.g. 43 and 46 is in the form of a solid of revolution composed of three successive cylindrical sections of which the intermediate section is of larger diameter than either of the end sections. The resonators 40, 41 and 42 can be of " Ni-Span-C " (Registered Trade Mark) and the transducer resonators 38, 39 of a nickel-zinc ferrite. The coupling necks can be of brass having a force fit in an axial hole in the resonators. The filter is supported at the ends by pivots 47, 48 of polytetrafluorethylene which engage central bores in the resonators 38, 39. Intermediate support for the filter is provided by two annular bearings 49, 50 of polytetrafluorethylene surrounding the coupling necks 44, 45 and fixed in circular holes in brackets 33 and 34. Dimensions and electrical characteristics are stated.
Patent GB-1522187-A (GB)
Title: Acoustic optic modulation device
IPC: G02F1/00
Filed: 1975-10-13
Abstract: 1522187 Acousto-optic modulation devices XEROX CORP 13 Oct 1975 [25 Nov 1974] 41827/75 Heading G2F An acousto-optical light deflection device comprises a plastics acousto-optical medium 11  having integrally bonded thereto a Piezo-electric acoustical transducer 14 which is adapted to receive a modulated electrical signal so as to generate acoustic waves which are transmitted to medium 11 to modulate the refractive index of said medium and diffract a light beam incident on medium 11 near the Bragg angle. The device is formed by placing the transducer in a mould defining the desired optical configuration of the acoustooptical medium, and injecting a molten plastics into the mould. The plastics is preferably a thermoplastics such as acrylic resin or polysulphone. A heat sink comprising a copper sleeve may be integrally bonded to medium 11. The transducer may be made of lithium niobate, sodium potassium niobate, lithium gallate, quartz, or lead-zirconatetitanate-ceramic. The top plate of the mould may be designed to provide fixtures in the side of medium 11 opposite the transducer for holding ancillary electronics and/or for mounting the device.
Patent GB-1202042-A (GB)
Title: Beds with readily adjustable spring compression
IPC: A47C23/043
Filed: 1966-11-23
Abstract: 1,202,042. Mattresses &c. B. M. AAGAARD. 23 Feb., 1968 [23 Nov., 1966], No. 41888/66. Heading A4M. A bed with adjustably pre-compressed coil springs 2 or 20 comprises a main frame 1 or 10, a vertically displaceable frame 3 or 11 on which the lower ends of the springs 2 or 20 bear, a flexible cover sheet 35 overlying the tops of the springs 2 or 20 and secured to the main frame 1 or 10, and a single screw means 8 or 22 to move the displaceable frame 3 or 11 to adjust the compression of the springs between the cover 35 and the frame 3 or 11. In one embodiment, Fig. 2, a pair of bell crank levers each have one arm 5 attached to a turnbuckle 8 and another arm 4 carrying a rubber roller 9 bearing on the underside of the displaceable frame 3, the levers being pivoted on shafts 6 carried by members 7 secured to the main frame 1. The bell crank levers could be replaced by ratchet levers or by a system of cams. In another embodiment, Figs. 4, 6, the displaceable frame 11 comprises sides 12 interconnected by cross-members 13 on which the springs 20 are supported. The frame 11 is supported on rubber rollers 16 carried by frames 14 pivoted, at 18, to the main frame 10. Tension wires W<SP>1</SP>, W<SP>2</SP> are each secured at one end 27 to the main frame 11 and at the other end to ears 30 carried by a nut 33 threaded on to the shaft of a winding handle 26. The wires W<SP>1</SP>, W<SP>2</SP> engage beneath the frames 14, 11 so that displacement of the nut 33 by the handle 26 effects a vertical movement of the frame 11 to vary the spring compression.
Patent GB-995211-A (GB)
Title: Attitude selector system for automatic pilot
IPC: G05D1/06
Filed: 1963-10-24
Abstract: 995, 211. Automatic control of aircraft. BENDIX CORPORATION. Oct. 24, 1963 [Oct. 26, 1962], No. 42071/63. Heading G3R. In a system for automatically maintaining constant attitude of an aircraft by controlling a control surface, the attitude is selected by means moveable in opposite senses from a datum position to which the means return some time after the means is rendered ineffective. As shown if a switch 72 is closed, an electromagnetically operated clutch 76 is energized to couple a servomotor 63 to aircraft elevators 73, a solenoid 81 is energized to separate members 100,102 to their dotted positions so that a potentiometer 34 may be operated in either direction from a central position, and a clutch 47 is energized to permit operation of the potentiometer by a knob 36 Movement of knob 36 increases or decreases the pitch attitude of the craft by altering the signal applied through a circuit 32 to a limiter and amplifier controlling servomotor 63. As a result the aircraft climbs or dives and any desired altitude may be maintained by operating a lever 97 so that the switches with which it is associated are moved to positions opposite to those shown. Clutch 116 is then energized by virtue of switch 158 so that an aneroid bellows 65 is coupled to an inductive device 64, signals from which are then effective to correct changes in altitude by control of servomotor 53. The signal from inductive device 64 is also applied to a motor-type integrator 66 which is effective by virtue of the now closed switch 152 to add an integral component of control. The signal from potentiometer 34 is gradually rendered ineffective by virtue of the changeover of switch 51 influencing circuit 32, and a heater 90 of a bimetallic delay switch 92 controlling a self-holding relay 94 is energized by the changeover of switch 82 so that some time after the signals from potentiometer 34 are completely ineffective, solenoids 81 and 47 are de-energized to re-centre potentiometer 34 and uncouple knob 36 until such time as lever 97 is restored to the manual position shown, whereupon bellows 65 is ineffective and integrator 66 remains in its last position before the changeover.
Patent GB-933742-A (GB)
Title: Slow burning delay device
IPC: F42B3/16
Filed: 1961-11-24
Abstract: 933,742. Detonators and delay compositions therefor. CANADIAN INDUSTRIES Ltd. Nov. 24, 1961 [Dec. 9, 1960], No. 42102/61. Class 9 (1). A delay device for a detonator comprises a slow-burning composition of an intimate mixture of 60-85 parts by weight of finely divided iron and 40- 15 parts by weight of powdered sulphur interposed between an explosive charge and an ignition means. In the embodiment described an electric delay detonator comprises a charge 4 of the delay composition, a primer 3 of lead azide or a mixture of lead azide and lead styphnate and an explosive charge 2 which may be of pentaerythritol tetranitrate. An air gap 10 separates the delay composition from a plastics cup 7 containing an ignition composition 6 and a bridge wire 5. In a modification of this embodiment the air gap 10 and cup 7 are dispensed with and an ignition composition comprising 98 parts by weight of red lead and 2 parts by parts by weight of boron is directly embedded in the delay composition. According to the invention, speed of burning of the composition largely depends on the proportions by weight and the particle sizes of the constituents, the latter being conveniently expressed in terms of specific surface (cm<SP>2</SP>/g). In a preferred form the composition comprises 65-75 parts by weight of iron and 35-25 parts by weight of sulphur, the iron having a specific surface of less than 1000 cm<SP>2</SP>/g. The burning rate may be reduced by the addition of an inert diluent such as finely divided silica, talc or titania. Tables of results showing variation of burning speed with proportions, particle size. and bulk density of constituents are given.
Patent GB-1130203-A (GB)
Title: Production of metal-casting moulds
Inventor: OSTINS GEORGE ALBERT
IPC: B22C3/00
Filed: 1965-10-06
Abstract: 1,130,203. Making refractory moulds. FOSECO INTERNATIONAL Ltd. 7 Nov., 1966 [6 Oct., 1965], No. 42411/65. Heading B5A. [Also in Divisions B3 and C3] In an investment casting process a destructible pattern, e.g. of expanded plastics, is coated and located in a mould box into which is poured a fluid composition including sand or other particulate refractory, a foaming agent, a defrothing agent and a binding agent comprising an alkali metal silicate and dicalcium silicate.
Patent GB-1025001-A (GB)
Title: Improvements in or relating to carton erecting apparatus
Inventor: JACKSON ERIC
IPC: B31B5/76
Filed: 1962-11-09
Abstract: 1,025,001. Erecting egg cartons. REED PAPER GROUP Ltd. Oct. 31, 1963 [Nov. 9, 1962], No. 42538/62. Heading B5D. The top panel of a blank for an egg carton of the type disclosed in Specification 935,300 is placed on a former 37a (Fig. 4, not shown) moving in a closed path through a number of carton erecting stations at one of which erecting stations II the blank is moved relative to the former in a direction perpendicular to the top panel to form the transverse partitions of the carton, and at a subsequent station III the longitudinal partition forming panels and the side walls are folded inwardly to complete the carton. In the illustrated embodiment, at a first station I (Fig. 6, not shown) seats in the base of the carton are formed by plungers passing up through the blank between stops, these are actuated by rotation of C-shaped plates 48, 48a about stub shafts 52 causing cam followers 73, 77 to move on fixed cams 81, 82. Simultaneously, plates 64 rotate upwardly to commence folding of the longitudinal partition panels. To prevent buckling of the central panel, a platen 83 is lowered on to the blank by abutments 84 on the rotating plates 48, 48a. The plungers 66 and stops 67 are then withdrawn and the blank passes to the next station II. Here, four blades press the blank on to the lower surface of the former causing blocks to pass upwardly therethrough and form the V-shaped transverse partitions. Resilient fingers 101 (Fig. 11, not shown) at each side of the former urge the side wall forming panels upwardly and inwardly to be held in guide channels 102 during movement of the blank to station III. At station III bars 117 clamp the blank against lower closure plates 104 and upper closure plates 103 rotate inwardly to fold the longitudinal partition forming panels downwardly and inwardly of the guide channels 102. The lower closure plates 104 rotate inwards to fold the side walls to their final erected position and the upper closure plates 103 complete their movement to place the longitudinal partition in position. The carton is ejected from the former by an ejecting blade (not shown). The formers are positioned so that stations II and III operate simultaneously on carton blanks and station I operates whilst a former rests between stations II and III.
Patent GB-1488747-A (GB)
Title: Molybdenum oxide purification process
IPC: C01G39/00
Filed: 1975-10-17
Abstract: 1488747 Molybdenum oxide; ammonium molybdate AMAX Inc 17 Oct 1975 [23 Dec 1974] 42644/75 Heading ClA Molybdenum values are recovered from ores and concentrates by (a) grinding to less than 100 mesh, (b) roasting in an at least 40% oxygen atmosphere to give MoO 3  and metal molybdates, (c) leaching out metal molybdates with hot water, (d) separating the leach liquor and recovering molybdate ions in soluble or insoluble form and subsequently feeding soluble molybdate to step (e) or returning insoluble molybdate to step (a), (e) contacting the insoluble residue from (d) with aqueous ammoniacal solution to give ammonium molybdate solution and (f) separating the insoluble residue from step (e) and recovering the ammonium molybdate from the solution. This may be decomposed to give pure MoO 3 .
Patent GB-994440-A (GB)
Title: Improvements in or relating to metal film resistors
IPC: H01C17/26
Filed: 1961-11-29
Abstract: <PICT:0994440/C6-C7/1> A resistor is made by depositing a thin film of a metal on to an insulating substrate, by anodizing the film while monitoring its resistance, terminating the anodization when the cross-sectional area of the remaining metal has fallen enough to increase the resistance to its desired value, and by thermally ageing the resistor without removing the anodically formed oxide film.  The metal used may be tantalum, titanium, zirconium, aluminium, or niobium. The electrolyte may be a dilute aqueous solution of nitric, boric, acetic, oxalic, or citric acid. The maximum potential used should not exceed 400 volts.  As shown in Fig. 2, the metal film 13 may be deposited over previously applied gold, silver, or copper electrodes 12A, 12B, and the electrolyte may be contained within wax walls 14 built on strips of electroplater's tape (not shown) applied to the substrate.  The ageing step subsequent to anodization is carried out by heating the resistor in air to a temperature of 200-400  DEG C. for a period of 2-10 hours. In the example given tantalum is oxidized with 5 weight per cent aqueous oxalic acid using a tantalum cathode, and the film and its oxide layer heated for 2 1/2 hours at 250  DEG C.
Patent GB-1253405-A (GB)
Title: Lidded tote box
Inventor: BOCKENSTETTE KENNETH ROBERT
IPC: B65D43/16
Filed: 1968-08-28
Abstract: 1,253,405. Stacking and nesting boxes. MS INDUSTRIES Inc. 28 Aug., 1969 [28 Aug., 1968], No. 42826/69. Heading B8P. A box comprises walls 11, 12 sloping upwardly and outwardly from a bottom wall (10) and a lid comprising two elements 16, 17 each hinged to one wall 11 and having interfitting elements 20 21 which overlap depressed portions 23, 22 respectively. To facilitate stacking the lid has an effectively flat depressed surface equal in size to the bottom (10) of the box. To facilitate  nesting the box walls have inwardly and outwardly depressed wedge-shaped elements (13, 14) and stop elements (15), and the lid elements, in the open position, overlap those of the box below.
Patent GB-985428-A (GB)
Title: Improvements in or relating to apparatus for measuring the dielectric constant of a layer of material such as a film or sheet
IPC: G01R27/26
Filed: 1960-12-14
Abstract: 985, 428. Measuring electrically; capacitance measurements. WAYNE KERR LABORATORIES Ltd., and R. CALVERT. Dec. 5, 1961 [Dec. 14, 1960], No. 42955/60. Headings G1N and G1U. Two mechanically coupled capacitive probes 14,15 (Fig. 1), having electrodes of the same surface area, are applied to determine the thickness and dielectric constant of a layer of material 10 in close contact with a support surface 11, probe 15 and support 11 producing a signal proportional to the thickness of the layer, which is applied to probe 14 and support 11 to determine its dielectric constant. Guard electrodes 16, 17 are provided, connected to the outer conductors of coaxial cables 18, 19. The capacitance between probe 15 and plate 11 is connected in the feedback path of a high gain amplifier 20 (Fig. 2) fed from a constant A.C. source 21, and a meter 22 across the output indicates the thickness of the layer 10. The output is fed to a second high gain amplifier 25 through the capacitance between probe 14 and plate 11, and a meter 28 in its feedback path indicates the dielectric constant of the layer 10, which is also indicative of the moisture content, or larger proportion of the material 10 comprises two layers of known differing dielectric constants.
Patent GB-1531014-A (GB)
Title: Oil-free adjuvant composition
IPC: C07K9/00
Filed: 1975-10-21
Abstract: 1531014 Compositions containing N-acetylmuramyl-L-alanyl-D-glutamic acid AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 21 Oct 1975 [22 Oct 1974 26 Sept 1975] 43080/75 Heading A5B [Also in Division C3] Oil-free immunological compositions comprise N-acetyl-muramyl-L-alanyl-D-glutamic acid and a pharmaceutical vehicle. The vehicle may be an aqueous solvent, for injection, a solid for oral, rectal or vaginal administration or may be a liquefied gas for use in aerosols. The compositions may include a vaccinating antigen.
Patent GB-1194195-A (GB)
Title: Heat-Curable Mixtures.
IPC: C08L33/06
Filed: 1967-09-22
Abstract: 1,194,195. Coated surfaces. CHEMISCHE WERKE HULS A.G. 22 Sept., 1967 [23 Sept., 1966], No. 43131/67. Heading B2K. [Also in Division C3] Articles are coated with a solution of a curable mixture and heated to 100 to 200C, the heat curable mixture comprising (a) a polymer obtained by radical polymerisation or copolymerisation of a 2-alkenyl-#<SP>2</SP>-oxazoline or a 2-alkenyl-5, 6-dihydro-4H-1,3-oxazine and (b) a compound or polymer containing at least two carboxylic acid groups. Suitable compounds (b) include acids such as adipic, trimellitic and decane dicarboxylic, copolymers of acrylic acid or methacrylic acid with e.g. acrylates or styrene and polyesters containing free carboxyl groups e.g. a trimellitic anhydride/ phthalic anhydride/butane-diol-1,3 polyester. Sheets of iron and of glass are coated in the Examples, and TiO 2  is included in the mixtures.
Patent GB-1485787-A (GB)
Title: Application of a glue to a workpiece
IPC: B05D5/10
Filed: 1974-10-04
Abstract: 1485787 Hot melt adhesive applicator FISCHER & KRECKE 4 Oct 1974 [9 Oct 1973 28 Nov 1973] 43217/74 Heading B2L Hot-melt adhesive application apparatus comprises one or more resiliently mounted transfer plates 2, of a desired glueing format and of lower wettability by the molten adhesive than a workpiece, mounted on a pressure support means 1 and movable between a series of cup like depressions supplied with adhesive and a workpiece 4a supported by a counter pressure means 7. The transfer plate 2 preferably has a lower heat conductivity than metal and is made from a heat resistant plastics material such as ptfe or other silicon or fluoro compound. The plates 2 may be glued or vulcanized to the cylinder 1 or to a flexible base plate on metallic bars screwed or clamped to the cylinder. As shown in Fig. 1 bags 4a are carried on the metal surface 4 of a counter pressure cylinder 7 and. adhesive is supplied to the roller 3 by a heated reservoir with wiping means 10 or by a dipping roller. Alternatively magnetic fixings may be used. Infra-red radiant heaters 5, 6, 9 and 11 with shields 8 are provided for maintaining the glue molten to prevent "thread-pulling" or the cylinder 1, which may be oil-filled is internally heated or may be coolable.  In Fig. 2 glue is applied to a plate 13 with depressions by an oscillating device 15 with a scraper and transferred therefrom to a workpiece 14 by a deformable transfer plate carried by a plunger 12.
Patent GB-1416677-A (GB)
Title: Method of replacing a wall of a building
IPC: E04G23/02
Filed: 1971-09-16
Abstract: 1416677 Underpinning CATNIC COMPONENTS Ltd 5 Dec 1972 [16 Sept 1971] 43326/71 Heading E1E A method of replacing a wall of a building comprises the steps of underpinning the roof and other supported structural parts carried by the wall, demolishing the wall, erecting a load bearing structure by engaging part of it behind a wall plate of the roof joists and then swinging the lower end of it inwardly until it is disposed substantially vertically on a footing of the wall, adjusting the load-bearing structure to relieve the load on the under pinning and finally removing the under pinning. The wall of a two storey building may be replaced by a frame 40 having two columns 20 and beams 22, 22, 23, the columns being provided with a jacking lug 27 and the beam 21 being provided to support the first floor of the building. The frame 40 is adapted to receive cladding panels and for details thereof to-gether with numerous minor details concerning beams, method applied to a row of terrace houses &c the Specification and remaining drawings (not shown), should be referred to.
Patent GB-1031861-A (GB)
Title: Hydraulically operated self-advancing mine roof supports
Inventor: EDWARDS STANLEY ALFRED
IPC: E21D23/00
Filed: 1963-11-04
Abstract: 1,031,861. Advancing mine roof supports. ELECTRO-HYDRAULICS Ltd. Nov. 4, 1964 [Nov. 4, 1963], No. 43420/63. Heading F1P. An hydraulically operated advanceable mine roof support 1 comprising a floor skid 2, a roof bar 3 and one or more props 4, 5, is provided with a valve 16 operated by a roof sensing member 8, the arrangement being such that when the roof bar 3 is in contact with the roof 18 the valve 16 allows the props to be lowered, and when the support 1 is lowered from the roof to a predetermined extent the valve 16 arrests lowering of the props. In the normal roof supporting position the sensing member 8 engages the roof 18 and thereby rotates a bell crank lever 6 in an anti-clockwise direction about a pivot 7 on the roof bar 3. Rotation of the lever 6 moves a rod 10 in a guide 9 against the action of a spring 12, thereby making a lever 14 pivot in a clockwise direction and move the valve 16 to its X position. A spring 13 connected at one end to the rod 10 and at the other end to the lever 14, ensures that the valve 16 operates with a snap action. With the valve 16 in the position X, operation of a selector valve (not shown) directs hydraulic fluid to a conduit A whereby lock valves 27, 28 are opened to allow fluid to exhaust from the full area sides of the props 4, 5 while conduits 35, 34, 33 are pressurised to retract the props from the roof. Simultaneously a conduit C is pressurised to contract a ram 19 for advancing the roof support. After the support 1 has lowered a predetermined amount the sensing member 8 can pivot in a clockwise direction whereafter the valve 16 moves to the position in which the annular sides of the props are no longer pressurised. To re-set the props 4, 5 the selector is operated to pressurise conduit B.