baber/WOPTO huggingface dataset:
Patent GB-1489442-A (GB)
Title: Sonar apparatus
IPC: A61B8/00
Filed: 1975-02-11
Abstract: 1489442 Sonar apparatus WESTINGHOUSE ELECTRIC CORP 11 Feb 1975 [21 Feb 1974] 5720/75 Heading G1G The output signals of a receiver transducer array in a side-scan sonar are electronically processed to provide a receiver focus which varies in range following each acoustic transmission. In the embodiments described the sonar is towed, submerged, and the receiver beam is fanshaped and directed to port and/or starboard. Fig. 8 shows a receiver array 56 with time-varied gain applied at 58-1 to 58-9 to its signals. Mixers 60-1 to 60-9 combine the array signals (of frequency fs) with local oscillator signals (of frequency fm) which have been given various phaseshifts in a shift-register 65 clocked at a rate fc. The phase-shifts are such that the array is focused at a given range. By linearly sweeping the frequency fc this range is varied with time so that all points on a seabed target strip are in focus. The mixer outputs are summed at 85, the difference frequency fs-fm being extracted at 87 and detected at 89 for driving display 90. By more elaborate processing of the array signals several adjacent parallel receiver beams can be formed simultaneously, Fig. 16, (not shown), thus permitting a faster scan of the target area. Further phase-shifting of the local oscillator signals enables the receiver beam(s) to be rotated in azimuth to compensate automatically for yawing motion of the sonar, Fig. 17 (not shown). When port and starboard receiver arrays are used, for reception of frequencies fs,fs' respectively, both frequencies are processed by common mixer channels and resulting difference frequencies fs-fm and fs'-fm are extracted by respective filters for detection and display Fig. 19 (not shown). Amplitudeshading of the array signals, for side-lobe suppression, is mentioned.
Patent GB-348242-A (GB)
Title: Improvements in and relating to processes for cracking oils, tars and the like
IPC: C10G9/08
Filed: 1930-02-20
Abstract: <PICT:0348242/III/1> <PICT:0348242/III/2> In a process for cracking oils in which the oils are cracked under pressure and then passed into a vaporizing chamber, the pressure on the oils is reduced on admission to the vaporizer so that they are sprayed in finely divided form on to heating surfaces arranged in the vaporizer.  The oil after passing through a cracking vessel (not shown) is passed from a pipe 9 through pipes 2 in a vaporizing chamber 1 and then through reducing valves 12 to pipes 3 provided with perforations from which it is sprayed on to the pipes 2, the latter being thus heated by the oil itself.  In the modification shown in Fig. 4, the cracked oil is sprayed through nozzles 16 on to plates 17 and thence on to pipes 13 heated by waste gases from the flue 14, a bypass 22 being provided to regulate the heat.
Patent GB-613138-A (GB)
Title: Improved machine for grinding or polishing glassware and the like
IPC: B24B19/00
Filed: 1946-02-25
Abstract: 613,138. Grinding and polishing. CARPENTER, H. Feb. 25, 1946, No. 5734. [Class 60] [Also in Group XXXIV] A machine for grinding or polishing glassware and the like comprises a hollow shaft for the delivery of coolant to the work undergoing grinding or polishing at one end of the shaft, the shaft being carried by two bearing bushes through the upper side of each of which passes an adjustable bearing pad having a curved bearing face of the same radius as that of the shaft. The shaft 1 is supported adjacent each end in bearings carried by brackets 2 mounted on a bed 3; each bearing comprises ballthrust bearings 4 located in a fluid-tight chamber 5 in the bracket 2 and a bushing 6 through a gap in the upper side of which passes an adjustable bearing pad comprising a block 7 of brass or other suitable metal having a curved bearing face 7a of the same radius as that of the shaft 1; the pad 7 is adjustable towards and away from the shaft by screw means 8 operating upon a plate 9 seating on the top surface of the pad, such plate having three or more feet 9a spaced apart as widely as possible to ensure that the pad bears evenly upon the shaft under the pressure of its adjusting screw 8. The shaft 1 is provided with a collar 4a and locking collars 4b. The shaft is driven by a variable speed electric motor 10 through belt 11 and cone pulley 12; the motor also drives a pump 13 circulating lubricant through a pipe 13a to the bearings; the oil returns through ducts 14a to a sump 14. A source of supply of coolant is connected to a conical gland 1c communicating with an axial passage 1b in the shaft. The machine is suitable for grinding an internal seating in the necks of bottles to provide an accurate fit with the stopper; the shaft is threaded at 1a to receive any one of a plurality of interchangeable grinding or polishing tools, or to receive an adaptor for holding such tools, which may for example comprise a diamond lap for honing, a steel plug for loose emery honing, a " jig " or chuck to receive a flat diamond grinding wheel or a carborundum wheel for surface and end grinding. The stopper itself may be mounted in a " jig " or chuck on the shaft end, and ground direct into the neck of the bottle with the aid of a loose abrasive. A diamond or carborundum wheel may be provided for use in decorating glassware, and wood, cork or other pads, brushes or felt wheels may be provided for use in polishing the glass with the aid of a fine abrasive.
Patent GB-1422575-A (GB)
Title: Titanium dioxide pigments
IPC: C09C1/00
Filed: 1973-02-06
Abstract: 1422575 Coated TiO 2  BAYER AG 6 Feb 1973 [12 Feb 1972] 5775/73 Heading C1N TiO 2  is coated with hydrated Al 2 O 3  by precipitation from a solution of a basic Al nitrate or chloride in the presence of an oxidizing salt. The coating also contains anions of the oxidizing salt. The basic Al salt may have an Al/anion ratio of 0À5-5; exemplified salts are Al(OH) 2À5 - (NO 3 ) 0À5  and Al 2 (OH) 5 Cl. The oxidizing salt may be a nitrate, nitrite, peroxydisulphate or perborate; (NH 4 ) 2 S 2 O 8  and NaNO 2  are exemplified. It may be added before or during addition of alkali to effect precipitation. Preferably the basic Al salt is added first to an aqueous TiO 2  suspension, then alkali is added to pH 5-6, followed by a solution of the oxidizing salt and pH adjustment to 6-7, then 7-8. Alkali may be added at 10-40‹ C. and drying effected at 25-250‹ C.
Patent GB-497898-A (GB)
Title: Pans for zinc coating objects according to the lead-zinc process
IPC: C23C2/00
Filed: 1938-02-24
Abstract: 497,898. Coating with metals. ARMSTRONG, J. J. V. (Mitteldeutsche Stahlwerke Akt.-Ges.) Feb. 24, 1938, No. 5840. [Class 82 (ii)] The top of a pan 1 for coating articles with zinc by the lead-zinc process is widened at 4 over a depth greater than the normal depth of the zinc layer 3, the latter being contained in a frame 5 of iron or iron' alloy which is resistant to attack by zinc, e.g. the iron known under the Registered Trade Mark '' Armco," and which is inserted in the widened top and rests on and forms a continuation of the walls of the unwidened part of the pan. The frame preferably has openings 6 through which the molten lead passes into the space between the frame and the upper part of the pan.
Patent GB-637865-A (GB)
Title: Method of color correction for photographic multi-layer negative color film
IPC: G03C5/10
Filed: 1947-02-28
Abstract: 637,865. Colour photography. GENERAL ANILINE & FILM CORPORATION. Feb. 28, 1947, No. 5860. Convention date, June 11, 1946. [Class 98 (ii)] In. the process described and claimed in Specification 637,879 of making substractively coloured multilayer negatives incorporating positive colour correction printing masks to compensate for incorrect colour absorption of cyan and/or magenta dyes from a film having silver halide emulsion layers sensitized to the red, green and blue regions of the spectrum and containing cyan, magenta and yellow colour formers respectively, with a yellow filter layer between the green and blue sensitive layers, by exposing it to a coloured object, colour developing, re-exposing either or both of the red and green sensitive layers and then developing in a polyhydroxy benzene type developer to produce silver and stained images of a yellow to brownish yellow colour together with silver images in the red and green layers and removing all.silver, the film, after colour developing, is developed in a black and white developer to gamma infinity to reduce any silver halide grains which had received exposure but which were not developed in the colour developer. Specification 541,266 also is referred to.
Patent GB-349551-A (GB)
Title: Improvements in or relating to type printing and the like telegraph apparatus
IPC: H04L17/20
Filed: 1930-02-22
Abstract: 349,551. Type-printing telegraphy. CENTRAL NEWS, Ltd. and DAVIES, C. C., 5, New Bridge Street, London. Feb. 22, 1930, No. 5972. [Class 40 (iii).] Comprises a printer and perforator combined in one machine, the perforator forming, if desired, a detachable unit. In the Creed receiver shown, the setting of the type-wheel 3, Fig. 1 (not shown), of the receiver is determined by the setting of five selector combs (not shown) having the usual extensions 4 which are here used to position selectively five levers 5 which are pivoted at 6 and are adapted to move five interponents 8a into or out of the horizontal paths of punches 17. These punches, together with the tape-holding and feeding mechanism, are carried by a frame 12 which is adapted to be rocked about a pivot 13 by mechanism actuated by the ordinary printer cam for each punching operation, the interponents 8a driving the selected punches 17 through the tape and through a die 25.
Patent GB-312396-A (GB)
Title: Improvements relating to alternating current voltage regulators
IPC: G05F1/14
Filed: 1928-02-27
Abstract: 312,396. Lunn, J. R. P. Feb. 27, 1928. Regulation, automatic. - In voltage regulators in which tappings of the secondary of a boosting transformer are selectively included in circuit by a regulator switch operated by a motor started by a voltage-relay and in which the motor is maintained in operation, by a pilot switch moving with the regulator switch, until the regulator switch has passed completely on to the next tapping, the pilot switch has two sets of contacts so arranged that the motor is reversed if it overruns. The fixed or moving contacts, or both, of the regulator switch are of carbon and the voltage difference between successive tappings is such that the transformer windings are not overheated by short-circuit currents when two contacts are bridged. As applied to 4-wire, 3-phase circuits, the outgoing and incoming lines b, c, Fig. 5, are connected to transformer windings d<1> - d<3>. e<1> - - e<3>, tappings on the windings e<1> - - e<3> being joined to contacts f<1> - - f<3> connected by sliding carbon brushes h to contacts g<1> - - g<3>. The brushes h are mounted in a common holder reciprocated by a screw driven by the reversible motor k. The motor turns in one direction or the other on closure of one of two switches x, each operated by solenoids u. The reciprocated brush holder carries an additional contact l cooperating with bars having notches opposite the contacts f. On the occurrence of low or high voltage, one coil u is energized through the corresponding holding coil sand over- and under-voltage contacts p<2>, p<1> of the relay r. The contact l leaves the notches in the bars m, n and contacts with one or both of the bars to energize the coil u directly and to short-circuit the holding coil s so that the relay r can return to its neutral position as soon as the voltage, is normal, the contacts p<1>, p<2> of the relay not carrying current during this return. After such return, as soon as the control l comes over notches in the bars m, n, the coil u is de-energized and the motor stops in a position in which each brush h does not bridge two contacts f. The notches in the bars m, n are staggered so that, if the contact l over-runs this position under the momentum of the motor, it will first make contact with the bar connecting the motor to run in the reverse direction. Instead of reciprocating, the switch may be rotated by the motor through worm gearing. Switches z<1>, z<2> de-energize the coil u at the limits of travel of the brush holder. Each carbon brush u may comprise several carbon blocks each spring-pressed and insulated by mica from each other but all in contact with the holder.
Patent GB-1086145-A (GB)
Title: Improvements in or relating to electric cable joints
Inventor: MAJEWSKI HENRYK ANDRZEJ
IPC: H02G15/24
Filed: 1965-02-11
Abstract: 1,086,145. Enclosing cable joints. W. T. GLOVER & CO. Ltd. Feb. 10, 1966 [Feb. 11, 1965], No. 6037/65. Heading H2E. In a joint for metal-sheathed gas-filled cables a metal sleeve is plumbed to the cable sheath ends, 2, and the plumbed joints surrounded by a structure formed of layers of resin-bonded glass fibre tape, wire binders 9 soldered to the sheaths, or corrugations or roughened portions of the surfaces of the sheaths ensuring a firm grip for the structure. A layer of self-amalgamating polyethylene tape to may be interposed between the plumbed joints and the glass fibre tape. The metal sleeve may be a one-piece lead sleeve 6 completely surrounded by a second layer 11 of resin-bonded glass fibre tape, or may comprise two copper end parts (16) (Fig. 2, not shown) each sealed at one end to a lead strip (19) soldered to the cable sheaths and bolted at its other end to an intermediate steel tube (13). In the latter case the glass fibre is extended to cover the end parts, a firm grip being ensured by copper strips (21) soldered to the sheaths. In both cases the glass fibre is covered by a protective covering of P.V.C. and polythene tapes, and the complete joint may be surrounded by bitumen-filled resin-bonded fibre glass box.
Patent GB-310135-A (GB)
Title: Improvements in the treatment of paper web with chemicals or colouring matters or other fluids
Filed: 1928-02-27
Abstract: 310,135. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 27, 1928. Cheque, draft, and like paper; pulp, adding special substances to: paper, treating with special materials; apparatus for treating with liquids and gases.-In the treatment of webs or sheets of paper, textile fabrics, metal foil, and other material with chemicals, colouring matter, or other liquid or gaseous media, the webs or sheets are passed over orifices disposed in the upper surface or cover of one or more boxes filled with the liquid or gaseous medium with which the web or sheet is to be treated. As applied to the wire cloth of a paper machine, the liquid, which may be a staining solution is contained in a box a, Fig. 1, the top of which has orifices such as slits or holes s, the liquid being supplied by a pipe E. A similar arrangement may be applied to the drying section of a paper machine or to paper after manufacture. Several boxes may be used side by side to produce polychrome effects. A cloud effect may be obtained by means of a box a, Fig. 5, having in addition an interior pipe r supplied with a different staining solution, or with water, which issues through nozzles s, the pipe r being reciprocated by an eccentric or the like e. The effects may be varied also by varying the orifices in the top of the box. Examples are described for staining paper with Cotton Black E extra, coating tin foil with an adhesive by passing it over a box containing glue solution, proofing soaped woollen fabric with a solution of aluminium acetate, obtaining a stained paper, the staining of which is of varying intensity either by applying pressure to the paper web locally or by treating it locally with a solution of sodium isopropyl naphthalene sulphonate and then drawing it over a box containing Malachite green and Congo Red R extra respectively, colouring tin foil locally on patches which have been treated with a solution of gelatine by drawing over a box containing a solution of Paper Fast Blue 4.G. extra. Paper pulp may have incorporated therewith potassium ferrocyanide and the moist web produced therefrom drawn over a box containing a solution ot iron chloride. Methyl violet may be added to the pulp and the paper web obtained therefrom treated by this method with a tannin solution to produce a coloured paper stable against water and steam. Paper may be fireproofed by the use of a solution of ammonium sulphate. Stripes of an emulsion of solid paraffin may be applied to paper web at the drying stage to produce safety paper.
Patent GB-1302923-A (GB)
IPC: G01S13/42
Filed: 1970-02-09
Abstract: 1302923 Aerials; pulse radar THOMSON CSF 9 Feb 1970 [19 Feb 1969] 6165/70 Headings H4A and H4D In an aerial system comprising a plurality of radiating elements, each equipped with an amplitude and/or phase control unit, a coded succession of distributed signals is applied to said control elements, whereby a like succession of system radiation patterns is obtained. Consequently, specific time-modulations are exhibited along sampled directions, and these enable processing means to derive angular information about radar targets which return signals. In a first embodiment, an aerial system comprises an array of N elements A1 to AN associated with quantized phase-shift elements D1 to DN controlled by a pre-wired code generator C giving M successive settings of said phase-shift elements in a cycle. Illumination of the space-zone under surveillance is effected by a transmitter E, which supplies a separate omni-directional aerial (not shown). Receiving circuits R supply received signals to a bank of correlators I1 to IP, corresponding to P directions being sampled. The correlators are also supplied by the code generator C during operation with P reference signals of the form F*(# k , t) which are conjugates of functions F(# k , t) representative of the time-modulations along the sampled directions. The time of arrival of a signal from a target depends upon its range, and said signal is immediately decoded by the correlator which has the corresponding reference code, whereby the angular position of the target is indicated. The number of sampled directions P is less than N, and is preferably N/2. The number M of the modulation code is at least equal to N. In a second embodiment, short pulses are coded at transmission and at reception, a transmitter E supplying the array through a duplexer device DX and a distributor B. Each pulse is emitted with a fixed code during a time #. During the inter-pulse time T, the radar is receptive, and the same code is applied to the aerial system. The whole of the code is utilized during M successive periods, and the signals from a target in a direction # k  form a train of pulses of the form: F(# k , t)<SP>2</SP>, F(# k , t+T)<SP>2</SP>,...F(# k , t+MT)<SP>2</SP>. The identifier means is constituted by a bank of P matched filters I1 to IP. In a third embodiment, the total code is operative during the time #, which is equal to M#, of each transmitted pulse. The space-time coding method makes it possible simultaneously to obtain the angular information, and the range information, by compression of the radiation patterns and the pulse. Each pulse of time # comprises M elementary codes of duration #. As in the previous embodiment, the identifier means are constituted by matched filters whose outputs consist of pulses of durations #, supplying range information.
Patent GB-1537013-A (GB)
Title: Safety device for a welding brazing or heating installation
IPC: F23N5/24
Filed: 1977-02-15
Abstract: 1537013 Torches SOC COMMERCIALE DES SOUDURES INDUSTRIELLES SOCSI SA 15 Feb 1977 06271/77 Heading F4T The control chamber 33 of a welding or brazing torch 27 is supplied with compressed air at 1, fuel gas at 2, and combustion supporting gas at 3, and the supply at 2 and 3 is controlled by a solenoid valve 14 connected to a thermocouple 35 via an amplifier 38 connected to a pump 28 for cooling the torch. The supply of filler material 9 is controlled by a pneumatic logic unit 8. In operation, current is supplied to pump 28, filler is fed to torch 27, amplifier 38 is energized and air, fuel gas, and comburant, are supplied at 1, 2, 3. Manual valves 13, 21, are opened, a timer 36 opens valve 14 and pneumatically actuated valves 15, 22, are opened so that comburant and fuel gas are supplied to the torch. Thermocouple 35 is heated to deenergize timer 36, pump 28 cools the torch and valve 14 is held open. If the air supply 1 varies between predetermined limits, valves 15, 22, are closed and the flame is extinguished. If the pressure of the fuel at 2 is incorrect, the flame decreases, and the thermocouple allows valve 14 to close, to thus shut-off the fuel supply. If the pressure of comburant 3 drops or rises, valve 22 is shut-off and the flame is extinguished. If the flame goes out accidentally, valve 14 closes and the fuel supply is cut-off. If the electric current to pump 28 is cut-off, amplifier 38 becomes inoperative and valve 14 is closed.
Patent GB-1179972-A (GB)
Title: Improvements in Window Ventilators.
Inventor: MACDONALD ALASTAIR RIGG
IPC: E06B7/02
Filed: 1968-02-08
Abstract: 1,179,972. Ventilators. A. R. MACDONALD. 1 Aug., 1968 [8 Feb., 1968], No. 6315/68. Heading F4V. A window ventilator comprises a transparent sheet 1 of glass or plastics which is inserted in a vehicle window frame above a sliding pane and which is provided with ventilation holes 2 inclined upwardly through the sheet from the outside to the inside. When fitted in a car, the amount of air drawn into the car through thesheet 1 is controlled by adjustment of the front quarter lights. The sheet 1 may be provided with brackets for fitting into a window space without a channelled frame. The holes 2 may be Venturi-shaped.
Patent GB-1504793-A (GB)
Title: Ducted fan gas turbine engine gas flow ducts
IPC: F02K1/38
Filed: 1975-02-14
Abstract: 1504793 Gas turbine ducted fan engines - exhaust systems ROLLS-ROYCE Ltd 10 Feb 1976 [14 Feb 1975] 6321/75 Heading F1J The invention relates to a gas turbine ducted fan engine and to the exhaust system thereof, the engine comprising a core engine 10 which terminates in an exhaust outlet 24, and a ducted fan 12 which supplies air through duct 20 defined outwardly by casing 18. An exhaust casing 16 is disposed downstream of the. casing 18, an ambient air inlet duct 26 being defined therebetween, pairs of pivotally-mounted flaps 28, 30 being associated with the inlet duct and being movable between the position shown in full lines in which the duct is closed, and that shown in chain-dot lines in which the duct is open for inflow of ambient air. Flaps 34 are pivotally mounted at their mid-points downstream of the casing 16 so as to define a variable area propulsion nozzle. A flow mixing device is provided within the exhaust casing 16 being in the form of a cylindrical member 36 having its downstream end corrugated to define flutes 40, the  device being supported by struts 38. The engine is mounted on an aircraft and is operated such that when the aircraft is cruising, the flaps 28, 30 are moved to the closed position shown in full lines and the nozzle flaps 34 are moved to the minimum area position, also shown in full lines; thus engine exhaust gas flows through the mixing device 36 and the fan air flows past the outside of the device the two flows mixing as they discharge from the troughs 40 and corrugations; noise attenuation is a minimum. At aircraft take-off, the flaps 28, 30 are moved to the open position, the downstream ends of the flaps engaging the upstream edge of the mixer device, so that exhaust gas and fan air mix and flow through the mixer device and ambient air flows inwardly through the opening 26 and around the outside of the mixing device the flows mixing downstream thereof; maximum noise attenuation is thus achieved.