baber/WOPTO huggingface dataset:
Patent GB-1456046-A (GB)
Title: Automatic pulse phase shifter
IPC: H02M7/515
Filed: 1973-12-21
Abstract: 1456046 Controlling converter HITACHI Ltd 21 Dec 1973 [25 Dec 1972] 59578/73 Heading H2F [Also in Division H3] A device for producing pulses having a desired phase relation to an A.C. supply (e.g. for firing thyristors in a power converter system) comprises an oscillator synchronized by a phaselocked-loop to the supply and means for deriving from the oscillator the desired pulses and for controlling the phase thereof, the phase-locked loop comprising a frequency divider connected to the oscillator output, a phase error detector comparing the divider output and the supply and regulating means e.g. from modifying the phase error signal before application to the oscillator, to lock the oscillator at a desired phase relation to the supply. Deriving the pulses via an oscillator rather than directly avoids errors due to supply waveform distortion due to the load. In Fig. 4 the output of an oscillator VCO is applied to a ring counter RC1-RC6 providing multi-phase outputs which are combined in bistable circuits FO1-FO5 before application to phase shifters of the type in which a ramp generated by the pulses is compared with a variable reference level. The A.C. supply is converted into a clipped multi-phase signal and applied to differentiators D1-D6. The outputs of these are applied, together with outputs from the counter to bistable circuits FF acting as phase comparators, an adder AD combining the comparisons to produce an error signal. This is added to a control voltage PH before application via a filter FL to the oscillator, the voltage PH ensuring locking at a desired phase shift. In the alternative circuit of Fig. 5 the phase detectors FF1-FF5 are supplied by a ring counter RC<SP>1</SP> from the output of the counter, in this case CU0-CU7. To produce the firing pulses from the phase-locked-loop an up-down counter UDC is provided and the output of the two counters CU, UDC is compared at COM with a digital phase control signal DN. Overflow from the counter CU counts UDC up and when the total count exceeds the control signal at COM it produces a count down pulse. In this way the comparator produces phase displaced pulses from which multi-phased firing pulses are produced by a ring counter RC. In Fig. 7 (not shown) the R inputs of the phase detector FF1-FF5 are derived from the firing pulses P1-P6 and the phase control voltage PH is derived from a digital-to-analogue converter DA from the DN input to maintain the desired phase relation if the supply frequency changes. Fig. 8, not shown, includes extra circuitry to ensure that the digital circuits do not get out of step.
Patent GB-1186328-A (GB)
Title: Improvements in or relating to Photomeric Analysis
IPC: G01N21/25
Filed: 1968-12-18
Abstract: 1,186,328.  Photo-electric analysis. LINSON INSTRUMENT A.B. Dec. 18, 1968 [Dec. 18, 1967], No.60134/68. Headings G1A and G1P. Photo-metric analysis apparatus comprises a sample cell movable between a first position in the light path of the apparatus and a second position clear of the light path means for parking the output voltage of the apparatus with the sample cell in its second position on a capacitor and means for comparing the parked voltage with the output of the apparatus with the sample cell in the first position. The sample cell 1 is moved between a lower position where it is in the light path 5 and can be filled from a test tube 2 to an upper position clear of the light path by an endless belt 3. In the latter position, the output of photo-cell 7 is amplified by a FET 11 and charges the capacitor 13 to a reference value. When the sample cell is moved to its upper position, switches 8, 9 change over and the output of FET 11 is compared by meter 19 with the capacitor voltage (through a FET impedence transformer 14). For calibration, potentiometer 12 is adjusted until equal outputs are obtained from cell 7 with pure solvent in the sample cell in each position. In a modification, Fig.4 (not shown) capacitor 13 and point 15 are connected to separate potential dividers connected to the output of FET 11. The apparatus may measure absorbance, fluorescence or turbidity.
Patent GB-1282126-A (GB)
Title: Method of forming a pattern on a metal roll surface
IPC: C25F3/14
Filed: 1969-12-11
Abstract: 1282126 Electro-chemically etching metal roll surfaces NYBY BRUKS A B 11 Dec 1969 [12 Dec 1968] 60443/69 Heading C7B A method for producing a pattern on a metal roll surface e.g. the surface of a Senzimir-roll of hardened steel, comprises applying a laquer to the surface and a light-sensitive layer, resistent to a laquer solvent, to the laquer surface; exposing this layer to light in areas dictated by the pattern required; developing and fixing the exposed areas and removing the non-exposed areas of the lightsensitive layer; removing with a solvent those areas of the laquer not masked by the exposed light-sensitive layer; electro-chemically etching the areas of the metal roll surface not masked by the areas of remaining laquer, thus producing the required pattern in the metal roll surface; and thereafter removing the remaining laquer.
Patent GB-1243603-A (GB)
Title: Free-flowing fused beads of thermoplastic polymers
IPC: B01J2/00
Filed: 1969-12-11
Abstract: 1,243,603. Thermoplastic polymer beads. DOW CHEMICAL CO. 11 Dec., 1969 [12 Dec., 1968], No. 60590/69. Heading C3P. Free-flowing fused beads of a normally solid, water-insoluble, thermoplastic, organic polymer are prepared by (1) suspending a powder of the polymer in an aqueous medium containing 0.05 to 20 weight per cent, based on the polymer, of a solid suspending agent insoluble in and non- reactive with the polymer and medium to provide a stirrable slurry; (2) heating the suspension to a temperature at least equal to the melting point of the polymer while agitating the suspension; and (3) cooling the suspension while continuing the agitation until the molten polymer solidifies to form beads of greater size than the powder particles. Specified polymers are of ethylene, propylene, butene-1, hexene-1, vinyl chloride, vinyl acetate, styrene, alkyl styrenes, ethyl acrylate, methyl methacrylate, n-butyl acrylate and acrylonitrile, and ethylene/ butene, ethylene/ethyl acrylate, styrene/butyl acrylate, ethyl acrylate/methyl methacrylate and α-methyl styrene/2-ethylhexyl acrylate copolymers. Specified suspending agents are kaolin, barium sulphate, zinc oxide, talc, aluminium hydroxide, calcium phosphate, calcium oxalate, titanium dioxide, substantially insoluble neutral phosphates, hydrated magnesium silicates, colloidal clays, methyl cellulose and synthetic polymers. The medium may also contain surface active agents, e.g. organic sulphates and sulphonates, polyoxyethylene ethers of fatty alcohols and alkyl phenols, disodium N - tallow - # - iminodipropionate and octadecylammonium chloride. Examples describe the preparation of beads of (1) polyethylene and (2-7) ethylene/butene-1 copolymers in aqueous media containing disodium N-tallow- # iminodipropionate and zinc oxide, titanium dioxide or tricalcium phosphate.
Patent GB-1276800-A (GB)
Title: A primer composition for adhering silicone elastomer to substrates
Inventor: YOUNG DONALD GENE
IPC: B29C65/70
Filed: 1970-12-31
Abstract: 1276800 Coating DOW CORNING CORP 31 Dec 1970 [20 April 1970] 62002/70 Heading B2E [Also in Divisions C3 and C4] A primer for adhering silicone elastomers to substrates comprises (i) 1 part by weight of tetraethoxy or tetrapropoxysilane, polyethyl or polypropyl silicate or a mixture thereof (ii) 0.75-2.5 pbw tetraalkyl titanate in which the alkyl is C 3-5  (iii) 0.75-5 pbw CF 3 CH 2 CH 2 Si [OSi(CH 3 ) 2 X] 3  in which each X is H or a -CH 2 CH 2 Si(OOCCH 3 ) 3  radical and at least one X is the latter, and (iv) 1-20 pbw ketone solvent of boiling point no greater than 150‹C. Preferably (i) is polyethylsilicate, (ii) is tetrabutyl titanate and (iv) is acetone or methylisobutyl ketone. The ingredients are prepared and stored under anhydrous conditions. In Example 1 epoxy resin, titanium metal, and polyurethane substrates are primed with the above compositions and then coated with a room temperature vulcanizable silicone rubber based on poly-3,3,3-trifluoropropyl methylsiloxane.
Patent GB-1128565-A (GB)
Title: Telecommunication exchange
IPC: B21B1/40
Filed: 1966-09-12
Abstract: 1,128,565. Making foil; rolling. UNITED STATES ATOMIC ENERGY COMMISSION. 12 Sept., 1966 [23 Nov., 1965], No. 40634/66. Headings B3A and B3M. Beryllium foil with a thickness of 0À005 inch or less is prepared by enclosing a beryllium sheet in an envelope of mild steel or SAE 4340 steel, rolling the sealed assembly at between 600 and 800 C. to reduce the beryllium to a foil, heating the rolled assembly to at least the rolling temperature, and then rapidly cooling the assembly. The cooling produces a thermal shock which breaks any bond between the foil and envelope, and permits the foil to be readily removed from the envelope. In an example, beryllium sheet of 0.025 inch was enclosed in 0.125 inch thick mild steel plates, and rolled at 750 C. with a 25% reduction per pass, to a final thickness of 0.0025 inch. The assembly was heated, after rolling, to a temperature of 750 C. for 1 hour.
Patent GB-644276-A (GB)
Abstract: 644,276. Automatic catches. HALLAM, SLEIGH, & CHESTON, Ltd. Dec. 18, 1948, No. 32778. [Class 44] [Also in Group X] A combined lifting handle and fastening device 7, 15 for a vehicle window 1 which is hinged at its upper edge 4 (see Group X) has a loop handle 7 pivoted about a rod 8 at the bottom of the window and urged downwardly by springs 14, and a cross piece 15 which, when the window is lowered, engages and rides over a striker rib 16 on the body frame to fasten the window. The window is released by raising the handle 7. The handle 7 is also used to secure the window in the fully open position (see Group X).
Patent GB-2001294-A (GB)
Title: Lifting-tipping apparatus
IPC: B65F3/12
Filed: 1978-07-14
Abstract: A lifting and tipping apparatus for emptying a refuse container (15) into a refuse collecting vehicle (4), includes a pair of pivoting arms (2) each movable about a horizontal axis (8) by a piston and cylinder assembly (1) which assembly is, in a start position, disposed parallel with the relevant pivoting arm, and is engaged with a projection (12) at the lower end of the pivoting arm, the projection being behind a plane parallel with the pivoting arms and containing a pivoting axis 11 for container-holding means 14 carried by the pivoting arms. Each piston and cylinder (1) is mounted by a bearing plate (5, 6) which also mounts the relevant pivoting arm (2).   <IMAGE>
Patent GB-2004355-A (GB)
Title: Blast furnace tuyere
IPC: C21B7/16
Filed: 1978-07-27
Abstract: A tuyere for a blast furnace, the main body of the tuyere being in the form of a tube with a central bore (1) and the nose portion of the tuyere having a downwardly-inclined hood-like extension (2) of the upper wall of the tube, whereby gas passing through the nose of the tuyere is deflected downwardly by the said extension, which extension has a gas outlet aperture (14) of greater area than the cross-sectional area of the bore of the tube. <IMAGE>
Patent GB-2027604-A (GB)
Title: Oil collector
IPC: E02B15/04
Filed: 1978-08-09
Abstract: A device for recovering immiscible liquid (e.g. oil) from the surface of water uses an endless moving belt of mesh which retains the liquid by surface tension while allowing the water to pass through. The belt is pivoted at its upper end and is supported by a float at its lower end so that it follows the water surface. The belt rotates so that its upper run moves upwards out of the water and a scraper, brush or roller is provided for removing the collected liquid from the belt at its upper end. A pair of contra-rotating screws at the lower end intercept solid debris. <IMAGE>
Patent GB-2027885-A (GB)
Title: Apparatus for determining the direction of incidence of received signals in the short range zone of a sonar installation
IPC: G10K11/34
Filed: 1978-08-14
Abstract: A sonar installation which provides for directional determination of received reflected signals by complex Fourier transformation of the instantaneous outputs of a linear array of equally spaced transducers, the transducers being scanned in succession by scanners arranged in two sets. The signals of each set are stored, then multiplexed. The scanning times for one set are offset by 1 DIVIDED 4 of the sonar wave period from those of the other so that the multiplexers afford respectively the real and imaginary components of the complex signal to be Fourier- transformed. Respective transforms are derived for different directions of incidence in turn.
Patent GB-2003611-A (GB)
Title: Moisture testers
IPC: G01N27/22
Filed: 1978-08-30
Abstract: A moisture tester comprises a probe with a measuring head 1 and a probe carrier 2 comprising electrical circuits for deriving a value of the moisture content of the tested material. The probe comprises a body of insulating material 3 with a first rod 6 protruding therefrom and forming one plate of a capacitor, and additional rods 7 to 12 positioned in an open arrangement around said first rod and being interconnected with each other to form the other plate of the capacitor and to admit unhindered flowing of the material to be tested past said probe. Instead of two additional rods being mounted on plate 13 they may be mounted directly in the material 3. <IMAGE>
Patent GB-2031354-A (GB)
Title: Vehicle Suspension and Steering Mechanism
Inventor: KESTER WILHELMUS LEONARDUS MAR
IPC: B60G21/055
Filed: 1978-10-16
Abstract: In a suspension and steering mechanism for a vehicle with a positive off-set of the steerable front wheels which is provided with a diagonally split braking system, the said mechanism comprising a transverse support arm 11 connecting a swivel 4 of a hub of a front wheel to the frame of the vehicle and wherein movements of the transverse support arm are restricted by a tube 13 which connects the arm to a stabilising rod 12 and in which steering control is obtained by pivoting of the swivel via a support arm 5 and a steering rod 6, the suspension is characterised in that, in plan view of the vehicle, the angle  alpha  between the transverse support arm 11 and a transverse vertical plane perpendicular to the direction of propulsion of the vehicle, is greater than the angle  beta  between the steering rod 6 and said plane, so that when braking occurs with only one circuit of the diagonally split braking system, a steering-in effect of the braked front wheel is obtained. <IMAGE>
Patent GB-2007568-A (GB)
Title: Rotatory Tools with Frangible Shanks
IPC: B23G5/06
Filed: 1978-11-08
Abstract: The present invention provides a weakened zone 8 in the shank of a tool e.g. a tap where it will preferentially fracture if subjected to an excessive working stress. This zone has an annular groove or has different constitution e.g. by heat treatment. Adjacent the weakened zone there is provided an extractor surface 9 which will remain on the broken-off portion, so that the extractor surface can be engaged by a suitable tool and the broken-off portion can more readily be removed e.g. the extractor surface may comprise flats engageable by a box spanner. The rotatory tool can conveniently be made by lost wax investment casting. <IMAGE>
Patent GB-2011145-A (GB)
Title: Color-coded concept device for the visually handicapped
IPC: G09B21/00
Filed: 1978-12-19
Abstract: A device has a surface 10 which is divided into a plurality of portions 13, 16 etc., each portion having a distinct color and a distinct textured surface, which textured surface is capable of being sensed by feel and having a separate, distinct character corresponding to the color of the respective portion. <IMAGE>
Patent GB-2015041-A (GB)
Title: Apparatus for Guiding the Shuttle on Circular Looms
IPC: D03D37/00
Filed: 1979-02-07
Abstract: In a circular loom, a guide reed 1 for the revolving shuttle 5 comprises bars 4 extending between upper and lower reed rings 2, 3, the warp threads 8 being passed through the bars between the shuttle and the respective ring, the reed bars 4 defining a channel-shaped runway for the shuttle 5 effective to centre the shuttle during its revolutions and thereby minimising damage caused to the warp threads by the revolving shuttle. <IMAGE>
Patent GB-2013776-A (GB)
Title: A metering pump
IPC: B22D39/00
Filed: 1979-02-21
Abstract: A metering pump for a molten metal or metal alloy, e.g. for supplying lead alloy to a battery plate grid casting machine, includes inlet and outlet valves 15, 16 respectively communicating with a chamber 12 and means 28, 29 for drawing a predetermined quantity of molten metal or metal alloy through the inlet valve 15 into the chamber 12 and then expelling the molten metal or alloy through the outlet valve 16. Each valve 15, 16 includes a movable valve member 17 for regulating the flow of molten metal or metal alloy through an orifice of the valve, and an elongated operating rod 22 integral with or welded at one end to the valve member 17. The cross-sectional dimensions of the end of the rod 22 connected to the valve member 17 are less than the corresponding dimensions of the adjacent region of the valve member 17 and the peripheral edge of said end of the operating rod 22 lies within the peripheral edge of the adjacent region of the valve member 17. The other end of each operating rod 22 is connected to actuating means 24, 25 for imparting movement to the valve member 17. <IMAGE>
Patent GB-2023888-A (GB)
Title: Lighter combined with a watch
IPC: F23Q2/32
Filed: 1979-04-18
Abstract: A lighter with a watch having a watch module interiorly disposed. A lighter case incorporates therein a fuel tank and a watch module and a display of the watch module is visible through a window formed in the side of the lighter case. The lighter is provided with a set button and a select button so as to easily correct reading, the date and hour, and seconds. Further, an ignition operator is utilized to make reading set, thus preventing erroneous operation of selection of the watch module and reading set.
Patent GB-2022300-A (GB)
Title: Codeable card and card-reading apparatus thereof
IPC: G06K19/14
Filed: 1979-05-10
Abstract: A codeable card comprises a plastics lamina 10 in which are embedded fibre optic links 11 which appear as one or more bundles 15 at one edge of the card and individual links 11 at the opposite and/or adjacent edges of the card. In the illustrated case, the links extend from the edge 13 to the opposite edge 14. Coding (which can be effected by the customer or user, in contrast to the manufacturer or supplier) is effected by interrupting, obscuring or omitting selected ones of the links 11, e.g by punching holes 16 through the card as shown, by forming slits through the card, or by foreshortening the links 11 at the edge 14. A reader for the card comprises a locator or stop 17 for locating the card accurately with the bundle(s) 15 accurately in register with a light source 18 and the links 11 at the edge 14 accurately in register with a sensor head 20 having sensors 20 for each link 11. <IMAGE>
Patent GB-2021861-A (GB)
Title: Field effect transistors
IPC: H01L21/033
Filed: 1979-05-24
Abstract: In a self-aligning method an oversize gate insulator is covered with a layer of polysilicon which is masked with a nitride "button" to enable the polysilicon and underlying insulator to be etched to the desired dimensions. A silicon wafer 32 has a layer 34 of thermal oxide which is patterned to form source and drain windows the spacing between which is greater than the final channel length. A layer of polysilicon is then applied and covered with silicon nitride 54 and these layers are patterned to mask the device areas and expose the surrounding oxide which is removed and replaced by thermally grown field oxide 50. The nitride layer is repatterned to mask gate, source and drain areas, the unprotected polysilicon is removed leaving spaced contacts 40 and the unwanted margins of the oxide strip 34 thus exposed are removed so that the gate nitride button defines the gate width and position. Thermal oxide 60 is grown in the grooves between the contacts 40. The source and drain regions 70 and 72 are formed by driving dopant in from the polysilicon in this step and/or by ion implantation before this step. The nitride buttons are removed and a conductive layer is applied, and patterned to form external source, gate and drain connections 62S, 62G and 62D. Mask alignment tolerances are high, in particular it suffices if the gaps between the nitride buttons straddle the edges of the source and drain windows. In an alternative method the field oxide is formed in an initial step using a nitride mask which is then removed. <IMAGE>
Patent GB-2023772-A (GB)
Title: Collar for fixing to a shaft
IPC: F16B21/18
Filed: 1979-06-20
Abstract: A collar (1) for fixing on a shaft, is provided with an annular groove (2) in its bore and a ring (3) of spring steel in the groove, the ring being discontinuous and thus for variable diameter, and its internal diameter being smaller than that of the internal bore of the collar and its radial thickness being greater than the depth of the groove. The collar and ring, of internal diameter such that they can initially be moved along a shaft (5) to a desired position, may be fixed to the shaft by an application of inward pressure to the periphery of the collar, thereby deforming collar (1) until its bore fits the shaft, and forcing ring (2) partially to sink into the shaft surface. <IMAGE>
Patent GB-2024607-A (GB)
Title: Safety belt retractors
IPC: B60R22/34
Filed: 1979-07-03
Abstract: A safety belt retractor has a spindle 11 provided with an outer layer 14 formed of a material which is capable of absorbing energy by substantially inelastic deformation. When the safety belt 10 is subject to shock-loading exceeding a predetermined level, this outer layer 14 is crushed, leading to a reduction in the effective diameter of the spindle 11 and thereby allowing an additional length of the belt 10 to be paid out after the spindle 11 has been locked. <IMAGE>
Patent GB-2053188-A (GB)
Title: Furylmethyloxime ether derivatives and their use as pesticides
IPC: C07D307/38
Filed: 1979-07-11
Abstract: Furylmethyloxime ether derivatives of the general formula:   <IMAGE> wherein R<1> represents an unsubstituted or substituted aryl or alkyl group and R<2> represents a lower alkyl group, in the form of E-isomer or Z-isomer or mixtures thereof exhibit insecticidal activity.
Patent GB-2025758-A (GB)
Title: Silage Cutter
IPC: A01F25/20
Filed: 1979-07-12
Abstract: A silage cutter for hitching to a tractor comprises a frame (1) on which a cutter member (28) is mounted. To cut a silage block from a bulk mass of silage, the cutter member (28) is lowered into the bulk mass, travelling on a curved path. The path is such as to sever the silage block cleanly from the bulk mass and to form an undercut in the remaining silage, so providing shelter from precipitation for the freshly cut wall. <IMAGE>
Patent GB-2053672-A (GB)
Title: Mattresses
IPC: A47C27/08
Filed: 1979-07-23
Abstract: A mattress having at least one fluid-tight envelope enclosing a cellular structure whose individual cell volume is relatively-large (typically from 120 to 20,000 cm<3>), adjacent cells communicating with one another by means of perforations permitting a limited rate of flow of fluid between the cells. Typically the fluid is air which inflates the envelope to 10-50 KPa above atmospheric pressure. Preferably a mattress cover fits around a plurality of generally elongate cores, each core constituting a said gas-tight envelope. Typically six generally parallel-extending cores are employed for a standard double-size mattress and four for a single mattress. The envelopes may be fitted with air-valves to enable inflation to be conducted conveniently in the home. Different cores may be inflated to different pressures in accordance with comfort.