baber/WOPTO huggingface dataset:
Patent GB-1442824-A (GB)
Title: Process for the injection moulding of articles
IPC: B29C45/14
Filed: 1973-08-21
Abstract: 1442824 Injection moulding KUNSTSTOFFWERK Gebr ANGER GmbH & CO 21 Aug 1973 [22 Aug 1972] 39472/73 Heading B5A In an injection moulding process a moulded article is permitted or caused to cool sufficiently to impart stability of shape to the outer region while the inner region is maintained in a plastic condition, the mould is then opened, the moulded article permitted to shrink and the article cooled while supported by at least one core element. The process may be used for making pipe fittings such as T-pieces 23, 24, and is carried out in apparatus comprising an inlet hopper 2, injection cylinder 3, mould parts 5, 6 and core units 13, 14 guided in slots 15 ... 18 in carriers 11, 12. The carriers 11, 12 are carried on struts 9, 10 on frames 7, 8. After separation of the mould parts 5, 6 the slots 15 ... 18 permit the core unit to be moved from position A to position B. Spray cooling means 21, 22 associated with the core units 13, 14 respectively is arranged to discharge a jet of a liquid, gas or mist to cool the article. While an article on core unit 14 is being cooled by cooling means 22 material is being injected to form an article on core unit 13.
Patent GB-1174549-A (GB)
Title: Improvements in or relating to Measuring Apparatus
Inventor: JNR ORRIN H GRANGAARD
IPC: G01F23/26
Filed: 1968-08-19
Abstract: 1,174,549. Measuring liquid-level electrically. HONEYWELL Inc. Aug. 19, 1968 [Aug. 25, 1967], No.39541/68. Headings G1N and G1U. A circuit arrangement for the measurement of liquid-level comprises a capacitive probe, 38, an integrator, 12, with gain inversely proportional to the probe capacitance and a variable gain amplifier, 14, of which the gain varies directly as the probe capacitance to maintain a total loop gain of unity. The circuit loop is completed by an active low-pass filter 10, of which the cut-off frequency determines the frequency of oscillations in the loop, there being a total phase shift of zero degrees around the loop, made up of 90 degrees phase log in the filter and 90 degrees phase advance in the integrator. The amplifier 14 generates a signal proportional to its gain which gives a measure of the liquid level. In Fig. 6 an alternating signal is applied to input terminal, 13, of integrator, 12, of which a fraction, of magnitude determined by probe capacitance 38, appears at the output terminal 18 and is coupled to the input 20 of amplifier 14. This A.C. signal is half wave rectified by diode 63 to generate a D.C. potential, at terminal 66, of magnitude proportional to the average value of the A.C. signal. The D.C. signal is applied to one input terminal 70 of a differential integrator 72, via potential divider network 68<SP>1</SP>, 69, another input 74 connecting to a reference D.C. potential, V REF ,   76. In effect the A.C. component present at 70 is cancelled by negative f.b. through capacitor 86. Thus the output terminal 80 assumes a D.C. potential which represents the integral of the changes in D.C, level at terminal 70. For example as the amplitude of the A.C. input at 20 increases, the level of the D.C. signal at 66 increases thus decreasing the output A.C. level at 80. At the same time an A.C. signal from the integrator output 20 is coupled via R.C. network 60, 88 to terminal 24 and so to terminal 90 of which the potential is midway between that of terminal 80 and earth, 31. The excursions of the A.C. signal at 90 are clipped by diodes 82, 84 so if the D.C. potential at 80 decreases the peak-peak A.C. excursion at 90 also decreases. Thus when the gain of amplifier 14 is at a maximum the D.C. potential at 80 is also a maximum and may be used with a suitable indicator 132 to indicate liquid depth. To compensate for losses in diodes 82, 84 the anode of diode 84 may be connected to earth through a pair of similar forward biased diodes in series connection 124, 126. The lowpass filter 10, includes transistor 110 as the active element and reshapes the clipped sine wave before passing it to the integrator input as well as controlling the frequency of oscillation of the circuit loop. The circuit may be used to measure impedance directly.
Patent GB-1314249-A (GB)
Title: Process and apparatus for controlling the high-pressure polymerization of ethylene
IPC: C08F10/00
Filed: 1970-08-18
Abstract: 1314249 Polymerizing ethylene STAMICARBON NV 18 Aug 1970 [25 Aug 1969] 39766/70 Heading C3P A process for the high pressure polymerization of ethylene wherein a controlled quantity of initiator solution together with ethylene is continuously fed into a polymerization zone is controlled by pumping the initiator solution by a plunger pump through a line divided into a number of partial streams which travel different distances before being introduced into the ethylene flow at different longitudinally spaced points thereof, a shorter of which streams joins the ethylene flow line upstream of the point where a longer partial stream is introduced so that the time in which ethylene flows from one point to the other is given by t = 1/X.np where t is the time, X is the number of spaced points, n is an odd number and p is the pulsation period of the pump. The initiator solution may be divided into two partial streams the shorter of which joins the ethylene flow at a point upstream of the point of introduction of the longer stream. The quantity of initiator solution fed may be dependent upon the temperature in the reactor. The initiator solution may be fed by means of a double acting plunger pump, the initiator line subsequently bifurcating into two branches of different length so connected to the ethylene line that the time in which ethylene flows between the points of connection is half or an odd multiple of half, the pulsation period of the plunger pump. Apparatus for carrying out the process of the invention is described and illustrated.
Patent GB-1040756-A (GB)
Title: Manufacture of laminar building components
Inventor: EVANS REGINALD WARNFORD
IPC: B32B27/00
Filed: 1962-10-20
Abstract: 1,040,756. Laminates and laminating. GOOLE PLASTIC HOMES Ltd. March 1, 1963 [Oct. 20, 1962], No. 39776/62. Heading B5N. A building panel comprises facing sheets of reinforced synthetic resin separated by a core structure comprising preformed core elements in the form of sheets shaped to have only spacedapart areas of each face in contact with the adjacent facing sheet to which they are bonded by the resin of the facing sheet, and including strengthening ribs bonded to the facing sheets throughout the length of each rib. The facing sheets may be of polyester or epoxy resin reinforced with glass fibres, hessian, expanded metal, gravel, shingle, broken sea shells or rice husks and a fine powder filler having a calcium base may also be included, the reinforcement being chosen to impart wear-resistant, fire-retardant or weather resistant properties. The sheets are built up in a mould in an appropriate sequence of resin, reinforcement and fillers. The core may be of papier mache sheets formed as conventional egg trays stiffened in parts with glue, size, polyvinyl chloride or polyester or epoxy resins, the central portion being left unimpregnated to preserve acoustic properties. These core sheets are laid in the mould on the uncured facing sheets and strengthening ribs are laid between them to form a rectangular grid; the second mould half with laid-up assembly of facing sheets is then placed over the core and the whole allowed to cure. The ribs may be preformed bars of synthetic resin reinforced with any of the materials used for the facing sheets. After removal from the mould the panel may be sealed around the edges with a cone or skirting.
Patent GB-1506160-A (GB)
Title: Solar cells
IPC: H01L31/046
Filed: 1975-01-08
Abstract: 1506160 Photovoltaic cells PHOTON POWER Inc 8 Jan 1975 40010/77 Divided out of 1506158 Heading H1K The subject matter of this Specification is identical with that of Specifications 1,506,159 and 1,506,158 from which the present application has been divided but the claims are directed to a photovoltaic cell comprising two juxtaposed microcrystalline layers between which a heterojunction is formed, and on the face of one layer opposite the heterojunction, a layer of a metallic compound, and a superposed electrode layer of copper separated from the compound layer by a rectifying junction produced by interaction between the copper and the compound.
Patent GB-1437979-A (GB)
Title: Method and apparatus for continuously varying the cross-section  of thermoplastic film webs
IPC: B29C55/04
Filed: 1973-08-24
Abstract: 1437979 Non-uniform stretching of films HOECHST AG 24 Aug 1973 [28 Aug 1972] 40184/73 Heading B5B The cross-section of thermoplastics film webs is varied by heating the web non-uniformly prior to and optionally during longitudinal stretching, and varying the non-uniformity so that the temperature distribution across the web changes with time, the temperature differences in the web causing non-uniform stretching of the film. The heating may be effected by several infra-red radiators each of which can be separately controlled to obtain the desired effect, or by a single heater separated from the web by a perforated plate which is moved transversely across the web, thereby moving the heat "shadow" and thus zones of no, or little heating to and fro across the web. Further stretching may be effected prior to or after the above process after which the web may be thermofixed. Preferred films for use in the process are those of polyethylene terephthalate, polyethylene, polypropylene and polyamides. See also Specification 1,437,980.
Patent GB-1221249-A (GB)
Title: Improvements in or relating to anti-lock means for fluid pressure breaking systems
Inventor: PARSONS DAVID
IPC: B60T8/74
Filed: 1968-08-22
Abstract: 1,221,249. Aritiskid brake systems. AUTOMOTIVE PRODUCTS CO. Ltd. 11 Aug., 1969 [22 Aug., 1968], No. 40222/68. Addition to 1,171,531. Heading F2F. In an improvement in or modification of the invention of parent Specification the antilock arrangement is applied to a braking system having a pump 14 which is driven continuously during use of the vehicle to provide liquid under pressure which may be fed directly to a brake operating cylinder 11 by operation of a driver's valve 53 or which may be stored in a liquid pressure accumulator 52 from which it may be fed to the brake operating cylinder 11 by operation of the driver's valve 53.
Patent GB-1442940-A (GB)
Title: Container having a device for the pneumatic withdrawal of fine material from the container
IPC: B65G53/22
Filed: 1974-09-17
Abstract: 1442940 Pneumatic emptying of containers POLYSIUS AG 17 Sept 1974 [13 Oet 1973] 40403/74 Heading B8A Material in a container 1 is loosened by means of aerating elements 6 in an inclined base 5 for transport to a discharge zone 4 at which air from a nozzle 7 carries the material into a conveying pipe 8, the lower end of which is surrounded by a chamber 13 communicating with the container via slots 14 in the lower part of the chamber wall.
Patent GB-1212044-A (GB)
Title: Improvements in or relating to vacuum-cleaners
IPC: A47L9/06
Filed: 1968-08-26
Abstract: 1,212,044. Suction cleaners. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 26 Aug., 1968 [25 Aug., 1967], No. 40604/68. Heading A4F. A suction nozzle for a vacuum cleaner comprises a hood-shaped member 5 movable over a surface to be cleaned by a handle 10 carrying a grinding member, e.g. a roller 8, which when moved forwardly or rearwardly causes the hood 5 to tilt in the opposite direction about an axis transverse to the direction of movement of the roller 8. The tilting is effected by the engagement of the roller 8 with a part cylindrical surface 7 on the hood 5.
Patent GB-846827-A (GB)
Title: Ore reduction
IPC: C21B5/00
Filed: 1958-12-18
Abstract: Metal oxides or sulphides are reduced by a stream of carbon monoxide and hydrogen at a temperature above 800 DEG F. but below the melting point of the solid starting material or reduced product using gas produced by the reaction of a carbonaceous fuel at above 500 DEG F. with air at above 1000 DEG F. in an unpacked insulated reaction zone in such proportions that a temperature of 1800 DEG -2800 DEG F. is autogenously maintained in the reaction zone and the gas produced contains 5 volumes of carbon monoxide and hydrogen for each volume of carbon dioxide and water vapour.  The fuel may be natural gas, liquid hydrocarbon coal or coke, the reaction time for the production of gas in the reaction zone being 3 to 10 seconds. Ores such as iron oxide or sulphide, or oxides of copper, nickel, chromium or manganese may be reduced in a fluidized bed, with counter-current gas flow, and a size grading of 100 microns to 1/8 inch in the case of iron ores.  To complete the reduction relatively pure hydrogen, separated from part of the gas from the reactor, may be used in a final stage, the waste gas therefrom being recycled to the main ore reduction step.
Patent GB-1036885-A (GB)
Title: Apparatus for separating granular material according to density
Inventor: HIRST ARTHUR ALGERNON
IPC: B03B5/66
Filed: 1961-11-16
Abstract: 1,36,885. Separating granular materials. COAL INDUSTRY (PATENTS) Ltd. Nov. 6, 1962 (Nov. 16, 1961], No. 41045/61. Heading B2H. Apparatus for separating granular solids according to density comprises a frusto-conical vessel, stirring means 11 rotatable on a vertical axial spindle 10, means at 4 for introducing a liquid medium tangentially into the vessel, outlets 16 at the bottom and 13 at the top for the dense and less dense fractions respectively and a frustoconical dispersing member 12 arranged coaxially on the spindle 10 narrow end upwards. A second dispersing member 14 is of equal diameter to 12 is arranged end downwards on the spindle 10 below the member 12. The spindle carries downward extensions 10a on its end. The liquid medium may be a suspension of sand in water if coal is being separated from shale. It is introduced through conduits 5 into the annular chambers 4 which open into the vessel 1 through annular gaps 3. Material to be separated is introduced through a shoot 6 into a horizontal feed ring 7. The member 12 may or may not rotate the spindle or may rotate at a different speed from it.
Patent GB-1431960-A (GB)
Title: Production of dimethylbenzophenones and anthraquinone-1- carboxylic acid
IPC: C07B61/00
Filed: 1973-08-31
Abstract: 1431960 Dimethylbenzophenone BASF AG 31 Aug 1973 [2 Sept 1972] 41071/73 Heading C2C Compounds of the formula in which one of the two radicals R<SP>1</SP> and R<SP>2</SP> is H and the other is methyl are prepared by reacting a benzyl halide with a compound of the formula in the presence of ferric chloride and reacting the mixture thus formed in the presence of aluminium chloride. The dimethylbenzophenone produced may be oxidized to the benzophenone dicarboxylic acid which may be cyclized to anthraquinone-1-carboxylic acid.
Patent GB-1490849-A (GB)
Title: Phase shift circuits
IPC: H03H7/18
Filed: 1974-09-24
Abstract: 1490849 Phase shift circuits; AFC systems HEWLETT-PACKARD CO 24 Sept 1974 [23 Nov 1973] 41522/74 Headings H3R and H3A A phase shift circuit suitable for producing a large phase shift of an input signal at 12<SP>1</SP> in a network analyser (Fig. 2, not shown) comprises a phase synchronization arrangement 58, 62-74 for synchronizing the frequencies of two signals, and frequency converter stages 60, 54 for obtaining a phase shift of the input signal. The phase synchronization arrangement is of the phase lock loop type and at sync. establishes a predetermined phase shift between the signals compared in a phase detector. Synchronized oscillators 58, 66 have their outputs differ by a multiple of this phase shift by employing dividers 62, 68 in the signal paths. Up and down converters 60, 54 merely superpose this multiplied phase shift upon the input signal. The phase shift obtainable may be varied by an applied control signal at 48 and by a variable voltage source 74. The source 74 may be replaced by a control signal (not shown) resulting from a phase comparison of the input signal at 12<SP>1</SP> with another signal. In another embodiment (Fig. 3, not shown) the input signal is synchronized with the output of an oscillator in a phase locked loop and the input, oscillator signals are heterodyned after suitable frequency multiplication. The network analyser of which the phase shift circuit forms a part is the subject of invention claimed in the divisional Specification 1,490,850 (see Division G1).
Patent GB-1400196-A (GB)
Title: Photographic film unit
IPC: G03C8/42
Filed: 1972-09-07
Abstract: 1400196 Self-processing film units EASTMAN KODAK CO 7 Sept 1972 [7 Sept 1971] 41563/72 Heading G2X A self-processing film unit has a trap for receiving excess processing fluid formed by a distensible bladder which has protective means against external compressive forces. The unit is of the type having a photo-sensitive recording sheet 12 and a transparent cover sheet 14 having a rupturable pod (10), Fig. 1 (not shown) of processing fluid at one end and a trap 6 for excess fluid at the other end. The trap is shown in detail in Fig. 2. Sheets 12 and 14 have extensions 12a and 14a extending into the trap. Extension 12a may have one or more openings 26, and extension 14a one or more openings 28. The bladder 30 is a folded sheet formed as a pocket with one side open towards the sheets 12, 14. Fig. 5 shows the pocket after it has received a quantity of excess processing fluid 11. A frame 38, having one or more apertures 40, is mounted above extension 14a, and acts, together with extensions 12a and 14a, to protect the bladder from external pressure which might cause rupture or reverse flow. A stiff shell-like cover 48 is provided externally of the bladder and protective means, and has a surface suitable for writing data thereon.
Patent GB-1481304-A (GB)
Title: Powder forming
IPC: B02C19/06
Filed: 1974-09-05
Abstract: 1481304 Comminution at low temperatures jet mills BOC INTERNATIONAL Ltd 5 Sept 1974 [5 Sept 1973] 41745/73 Heading B2A Material e.g. pigmented plastics colour concentrates are powdered e.g. in a jet mill by contacting the material with a cold gas (below 5‹C) at high pressure (at least 60 psig) to effect both cooling and comminution and separating the comminuted material from the gas stream. Temperature control and feed rate may be controlled. In operation, air enters the system via a filter 3 is compressed to e.g. 120 psig at 4 dried in a bed 5 and the precooled air is cooled in a chamber 7 to e.g. -50‹C with liquid nitrogen from a chamber 1. The cold 1.p. air is fed to a jet mill 8. Solids material is entrained in air fed from the bed 5 to a feed venturi 14 which is supplied by a vibratory feeder 9. Powder from the mill 8 is separated in a cyclone 11. Cold gas is returned to a heat exchanger 6. The venturi is controlled by a regulator valve 10.
Patent GB-1371385-A (GB)
Title: Gas discharge panels
IPC: H01J17/49
Filed: 1971-09-08
Abstract: 1371385 Gas discharge panel OWENSILLINOIS Inc 8 Sept 1971 [8 Sept 1970] 41820/71 Heading H1D The dielectric charge storage surfaces of a gas discharge panel of the cross-bar address type are coated with a layer of a lead oxide between 100 and 10,000 Šngstrom units thick. The oxide may be applied directly as formed in situ. The invention is said to reduce the required aging time and stabilize the operating voltages.
Patent GB-1193856-A (GB)
Title: Improvements in or relating to Transport Systems
Inventor: FAURE MARC HENRI JEAN
IPC: B61B13/08
Filed: 1967-09-14
Abstract: 1,193,856. Railway systems. BERTIN ET COMPAGNIE. 14 Sept., 1967 [14 Sept., 1966], No. 41912/67. Heading B7L. A transport system comprises a vehicle 37, Fig. 6, movable with a clearance, below a guide track 38, wherein a sub-atmospheric pressure fluid layer 40 is provided in the clearance between the track 38 and walls 42, 43, of the vehicle, the latter being lifted by the force produced by the difference between the atmospheric pressure and the pressure of the fluid layer and wherein means are provided for adjusting the pressure of the layer and thus the lifting force as the clearance varies to thus stabilize the vehicle in its movement along the track. The cylindrical-surfaced track 38 is supported by pylons 39 and provided with a roof 49. The vehicle 37 is provided with wheels 41 which can bear on the track when the vehicle is stationary or the lift fails. The clearance between the walls 42, 43 and the track reduces from their outer ends towards a neck connected to a reservoir 48, Figs. 7, 7a, extending along the length of the vehicle. The sub-atmospheric pressure layer 40 is produced by injectors 44 in the neck, connected by tubes 47 to a duct 46 connected to the exhaust of a gas turbine unit 45 at the front of the vehicle, which duct reduces in cross-section towards the rear of the vehicle. The gases from the turbine unit exhaust freely to atmosphere through the reservoir. The vehicle is propelled by a rear propeller 50 driven by a unit 51. Wheels 55 provide a minimum clearance between the track and the vehicle and may be used if required for braking and propulsion. Tilting of the vehicle laterally, is limited by wheels 53, Fig. 6, engaging a safety member 52 carried by the pylons 39. By the nature of the varying clearance between the walls 42, 43 and the track, the lift is reduced as the vehicle movesnearer the track and vice versa, in the manner described with reference to Fig. 4 (not shown). In another embodiment the control is by a sensing roller, Fig. 2 (not shown). Superatmospheric pressure cushions may also be provided between the vehicle and part of the track or an auxiliary track, to guide the vehicle laterally and/or assist the lift as described with reference to Fig. 3 and 10 (not shown). Exhaust gases may also resist propulsion.
Patent GB-1438956-A (GB)
Title: Anatomical model for teaching the intubation of the human  trachea
IPC: G09B23/28
Filed: 1972-09-09
Abstract: 1438956 Anatomical models D R GARBE 7 Sept 1973 [9 Sept 1972] 41962/72 Heading G5G [Also in Division A5] An anatomical model of the human head and neck for teaching the intubation of the human trachea, comprises a plurality of artificial parts including an epiglottis a<SP>2</SP>, a tongue a<SP>1</SP>, a larynx j and mouth parts, the epiglottis and tongue forming an assembly having a metal insert a pivotally mounted at b, the said assembly being biased into a position at least partially obscuring the larynx by the elastic resilience of the tongue part, the arrangement being such that the said assembly may be manipulated through the said mouth parts with a laryngoscope to simulate visual exposure of the human larynx. The lip parts of the mouth parts of the model are formed of resiliently deformable material which is stiffened internally by a ring z. The model has a lower jaw part e or rigid polyurethane and is movable in an anterior direction. A retro-laryngeal pathway is provided. Interchangeable upper dentures s are provided which are resiliently mounted on a bracket t backed by a micrometer switch u which forms part of a circuit including also a battery w and warning buzzer v, which is completed when pressure is exerted on the upper teeth. The said larynx may be resiliently mounted so that application of external manual pressure causes posterior movement and it may be adjusted in position by means of a screw r and clamp k<SP>1</SP> arrangement. The trachea tube j, which is of flexible material, connects with a bronchi bifurcation block I by means of a short rigid tube k, the said block l communicating with a pair of bronchi tubes n which terminate in a pair of inflatable bags p representing lungs.