baber/WOPTO huggingface dataset:
Patent GB-1242733-A (GB)
Title: A slit-shaped extrusion nozzle for extrusion of synthetic thermoplastics materials
Inventor: FRITSCH RUDOLF PAUL
IPC: B29C48/08
Filed: 1968-08-26
Abstract: 1,242,733. Extrusion dies. R. P. FRITSCH. 26 Aug., 1968 [24 Oct., 1967], No. 40739/68. Heading B5A. [Also in Division F1] A slit extrusion die head 3 comprises intercalating gears 1, 10, the former being a single gear driven by means outside the die head and the latter being formed by a series of.gears 10 freely rotatable on a shaft 2 and a gear 10a keyed to the shaft at the end adjacent the drive means. During operation a constant extrusion rate is obtained by keeping the gear drive constant and controlling the rate of supply of material to the gears by reference to a pressure gauge (9), Fig. 1 (not shown). Die head 3 has bores (8) and the gears have bored shafts to allow the circulation of a heating medium, the shaft bores and bores (8) being connected in series.
Patent GB-1162377-A (GB)
Title: Wired Broadcasting Systems and Apparatus therefor
Inventor: GARGINI ERIC JOHN
IPC: H04H20/82
Filed: 1966-09-13
Abstract: 1,162,377. Wired broadcasting systems. COMMUNICATIONS PATENTS Ltd. 11 Sept., 1967 [13 Sept., 1966], No. 40834/66. Heading H4R. [Also in Division H1] A wired broadcasting system comprising a distribution feeder having a plurality of pairs 5, 6 and 7 of conductors, on each pair of which a channel or programme is transmitted and a number of subscriber stations 10 each connected by a single individual pair of signal conductors 9 to an individual connection unit 8 adapted to connect the signal conductors to a selected pair of conductors of the feeder under the remote control of the subscriber station. The connection units may incorporate reed or ferreed switches or transistor or diode gates. The control signal from the subscriber station to the connection unit may be electrical, mechanical, pneumatic or hydraulic. In one form (Fig. 2, not shown), the two signal conductors are enclosed in an outer conductive screen constituting a third conductor. To select one of six programmes the subscriber sets a switch to apply a D.C. potential between a selected pair of these conductors. Depending on the polarity of this potential and the particular conductors involved a corresponding relay located at the connection unit and connected between those conductors, through an appropriately poled diode is energized. In another form (see Division H1) a disc carrying a magnet is rotated, by mechanical linkage such as a Bowden cable or an electric, pneumatic or hydraulic motor, to a position in which the magnet closes a selected pair of reed switches to connect in the required channel.
Patent GB-918861-A (GB)
Title: A liquid electric circuit-breaker
IPC: H01H33/68
Filed: 1959-12-02
Abstract: 918,861. Liquid-blast switches. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. Dec. 2, 1959 [Dec. 2, 1958], No. 40991/59. Class 38 (5). A liquid-blast switch has a sealed interrupting chamber 1 filled with liquid which is placed under pressure at least before the switch contacts are separated so as to minimize the formation of a gas-bubble by the arc. In Fig. 1, the oil in the chamber 1 is maintained continuously at a high pressure by an hydraulic accumulator 15. The moving contact 3 is opened by the pressure in the chamber 1 when a pneumatically-operated latch 14 is released, a piston 23 formed on the contact 3 and moving in a cylinder 4 causing oil to flow through the contact 3 to assist in extinguishing the arc. The switch is reclosed by a pneumatic motor 13 or by a spring drive. Any arc-produced gases collect in a chamber 5 which has a glass inspection plug 6 and a vent plug 7. In a modified arrangement, Fig. 2, the oil in the chamber is placed under pressure prior to an opening operation by the application of compressed air to a piston 17 to cause a piston 18 to apply pressure to the oil.
Patent GB-1017955-A (GB)
Title: Improvements relating to mechanism for stacking and spacing blanks of cardboard and the like
Inventor: BISHOP THOMAS DESMOND
IPC: B65H29/68
Filed: 1963-10-22
Abstract: 1,017,955. Endless conveyers. DENITOND ENGINEERING CO. Sept. 28, 1964 [Oct. 22, 1963], No. 41604/63. Heading B8A. [Also in Division B6] Mechanism for stacking and spacing blanks comprises a gravity roller 19 and a conveyer 11 which forms a retarder to slow the delivered blanks into an overlapping stream, a second conveyer 35 located below the first conveyer and extending from the discharge end of the first conveyer 11, and a tail gate 41 located on the second conveyer and movable between a position where the blanks are stacked one upon the other and a second position which allows the accumulated stack to move on to a table 39. The conveyer 11 is mounted on a frame 10 mounted on wheels 14 so it may be moved by manual rotation of a wheel 16. The frame also carries an extendible tray 17 and a ramp 18 leading to the gravity roller 19. The blanks are delivered on to the second conveyer 35 mounted on a carriage 30 tiltable by means of a handwheel 32 so that the height of each stack held by the tail-gate 41 can be adjusted. The tail-gate 41 is pneumatically operated by solenoid valves under the control of a counter. The position of the tail-gate may be adjusted along the conveyer 35.
Patent GB-1084857-A (GB)
Title: A device for promoting mixing of streams of fluids
IPC: F02K1/38
Filed: 1964-10-12
Abstract: 1,084,857. Mixing fluid streams. NORD-AVIATION SOCIETE NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. Oct. 12, 1964 [May 27, 1964], No. 41653/64. Heading B1C. [Also in Division F1] Fluid streams e 3  e 4  converge on at least two aerodynamically shaped pivotable flaps v 1 , V 2  whereby intense mixing takes place in the zone between the flaps and complete mixing in a zone z at a short distance a downstream of the point of convergence. The cross-section of the flaps is wedge-shaped in a plane at right angles to the pivotal axis x<SP>1</SP> x<SP>2</SP> tapering away from the axis; the edges via and v2a are similar to the leading edge of an aircraft wing and the cross-section parallel to the pivotal axis is that of an aerofoil. The pivotal axes of the flaps may be staggered and the flaps may partially overlap (see Fig. 9, not shown). More than two fluid streams may be mixed, see Fig. 5 (not shown). The flaps may point upstream instead of downstream as shown. As applied to a combined by-pass turbo-jet and ram-jet, Fig. 6 the turbo-jet by-pass air e 4  and the ram-jet air e 3  are mixed in the zone z by flaps the extremities of which may seal on the boundary walls c 1 , c 2  (see also Fig. 7, not shown); if the flaps overlap and all are applied against one of the walls either ram-jet air or by-pass air alone may be supplied to the combustion chamber b. Owing to the intensive mixing the apparatus can be relatively short so that the combustion chamber is located approximately in the plane of the turbine outlet.
Patent GB-868995-A (GB)
Title: Improvements in and relating to frequency-changing circuits
Inventor: KOHN CZESLAW TEODOR
IPC: H03D7/12
Filed: 1958-12-24
Abstract: 868,995. Frequency changing circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Jan. 20, 1960 [Dec. 24, 1958], No. 41699/58. Class 40(6) In a frequency changing circuit for a radio. receiver the local oscillator 10 operates at one half the beat frequency, its tuned circuit 11 being earthed at a centre-tap and having symmetrical tappings which feed a frequency doubler compromising crystal diodes 14, 15. The diodes feed directly into the mixer, without the interposition of filter circuits tuned to the second harmonic of the oscillator frequency. The mixer may comprise a thermionic valve or, as shown a transistor 21, the signal being applied to its base and the local oscillations injected into the emitter: the diodes 14, 15 are so poled as to provide a conductive path for the transistor emitter current. The arrangement may also be applied to arrangements in which a higher harmonic of the oscillator frequency is used, e.g. by using two frequency doublers in cascade to provide a quadrupler.
Patent GB-1276738-A (GB)
Title: Method for heat-treating of hot rolled rod
Inventor: TAKEO KEINOSUKE
IPC: C21D9/52
Filed: 1969-08-21
Abstract: 1276738 Quenching steel rod SUMITOMO ELECTRIC INDUSTRIES Ltd 21 Aug 1969 41818/69 Heading C7N The cooling rate of a steel wire rod is controlled by dipping the rod while at 600‹-1100‹C. into (a) a water bath kept at above 70‹ C or (b) a water bath kept at above 45‹ C. and containing a surface active agent, whereby a uniform film of steam is generated on the rod which controls the cooling thereof. The rod may be continuously coiled before dipping and the surface active agent may be an alkyl- or alkaryl sulphonate a formalin condensed naphthalene sulphonate a quaternary ammonium salt, a polyvalent alcohol or fatty acid or amine salt thereof, but is preferably a poly-oxyethylene ether or ester. The amount of the agent added to the water may be 0À1-2% (e. g. 0À2-0À5%).
Patent GB-1447869-A (GB)
Title: Circuit arrangement for a television or radio receiver for  switching a tuning voltage from a preset tuning potentiometer  to a voltage controllable tuning element at will
IPC: H03J3/18
Filed: 1973-09-06
Abstract: 1447869 Receiver tuning arrangements; transistor analogue gates and current mirror circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 Sept 1973 [9 Sept 1972 25 May 1973] 41922/73 Headings H3Q and H3T In a circuit arrangement for a TV or radio receiver for switching a tuning voltage of a tuning potentiometer 1, Fig. 1, to a voltage controllable tuning element 3 by means of an impedance converter T 1 , T 2 , T 6  Fig. 2 and a switch T 7 , T 8  identical switching elements T 7 , T 8  interconnect the tuning potentiometer 1 to the tuning element 3 when activated by a switchable current source T 9 , T 10  and the arrangement is such that current flowing across a junction of one T 7  of the switching elements is matched by an equal current flowing in a corresponding sense across the corresponding junction of the other switching element T 8 . As shown in Fig. 2 an emitter follower T 6  provides the impedance conversion while a difference amplifier T 1 , T 2  and current mirror T 3 , T 4 , T 5  provide for U BE  and temperature compensation. The tuning voltage at 8 is prevented from occurring at the output A when T 9  is turned on by control at 12 so as to turn off the analogue switch T 7 , T 8 . In a modification Fig. 3, the analogue switch transistors T 20 , T 21  are switched off when a transistor T 25  is turned on. A transistor T 24  provides negative feedback to T 21  so as to make the collector currents of T 23  and T 21  equally large. The current mirror transistors T 22  and T 23  may have a high current amplification # of 98 and operate the same as the current mirror of Fig. 2 which has three transistors T 3 , T 4 , T 5  because (lateral) PNP transistors only have low # such as 2-15. The current generator T 12 , T 26  is common for all electronic analogue switches such as 2, 5 Fig. 1, and is necessary to recharge the hum and interference filter capacitor connected to the output in a period after switch over of tuning. In a modification of Fig. 3 an output amplifier (T 24 , T 42 , Fig. 4, not shown) replaces the emitter follower T 24  of Fig. 3. This output amplifier is common for all programmes and includes a plural collector transistor (T 42 ) constituting a current mirror. The tuning voltage may be indicated by a voltmeter (50) connected to the output A. In a further arrangement (Fig. 5, not shown) a plurality of impedance converting analogue switches each consist of transistor pairs T 1 a, T 2 a, T 1 b, T 2 b having their outputs connected to a common output emitter follower T 6  and also connected to a common current mirror T 3 , T 4 , T 5 . The circuit arrangement may be constructed in integrated circuit form.
Patent GB-875955-A (GB)
Title: Triphenylalkylamines and stimulant compositions containing them
Inventor: LOWE PETER ALBERT
Filed: 1958-12-31
Abstract: The invention comprises compounds of the general formula p Ph3C(CH2)nNR2R2 together with their acid addition salts, wherein n stands for the integer 2 or 3 and the alkylene chain may be further substituted by alkyl groups, R2 stands for a hydrogen atom or for alkyl, alkenyl or hydroxyalkyl radicals and R3 stands for alkyl, alkenyl or hydroxyalkyl radicals and Ph stands for a phenyl radical; the preparation thereof (wherein R2 is other than hydrogen) by reducing a compound of the general formula: Ph3C(CH2)n-1CONR3R4, wherein R4 is an alkyl, alkenyl or hydroxyalkyl radical, with lithium aluminium hydride; by interaction of a compound of the formula: Ph3C(CH2)nX wherein X is a halogen atom, with an amine NR2R3 and, (wherein R2 and R3 are both alkyl radicals) by dialkylation of a compound of the general formula: Ph3C.(CH2)nNH2; together with pharmaceutical compositions containing as active ingredients compounds of the general formula PH2C.(CH)nNRR1 wherein R and R1 are the same or different and are hydrogen atoms, alkyl, alkenyl or hydroxyalkyl groups (see Group VI).  N,N-Diethyl-, -dimethyl-, di-n-propyl, -diisopropyl and -diallyl-b ,b ,b -triphenylpropionamides are prepared by reacting b ,b ,b -triphenylpropionyl chloride with the corresponding amine. 1,1,1-Triphenyl-4-bromobutane is prepared by reacting triphenylmethyl chloride with sodium amalgam in ether and then reacting the ethereal solution of triphenylmethyl sodium with 1,3-dibromopropane.ALSO:Pharmaceutical compositions having stimulant properties comprise one or more compounds of the general formula Ph3C(CH2)nNRR1 wherein Ph stands for a phenyl radical, n for the integer 2 or 3 and the -(CH2)nradical may bear a C-alkyl radical, R and R1 which may be the same or different, stand for hydrogen atoms or for alkyl radicals which may optionally be substituted by hydroxy groups, or for alkenyl radicals and/or their salts, together with one or more non-toxic pharmaceutically-acceptable excipients.  The compositions may be in the form of tablets, capsules, pills, granules or aqueous solutions or suspensions for oral use or sterile aqueous or oily solutions or suspensions for parenteral use.  Examples describe tablets containing either the free bases or their hydrochloride or phosphate salts.
Patent GB-940295-A (GB)
Title: Improvements relating to tape recording and reproducing apparatus
Inventor: REDHEAD JOHN JERVASE MAVER
IPC: G11B27/34
Filed: 1958-12-31
Abstract: 940, 295. Selecting magnetic tape locations. AERONAUTICAL RADIO SERVICES Ltd. Dec.30, 1959 [Dec. 31, 1958; Dec. 10, 1959], Nos. 42190/58 and 42017/59. Heading G5R. Electrically or optically sensed areas on the tape produce electrical impulses as each location passes a fixed point and operate counter means associated with a manually-set index so that warning means and/or tape-stopping means operate when the count and index reach coincidence. The relative settings of counter and index may determine the direction of tape-travel and if this is 'backward', the 'start' end of the required passage is selected. Operation is by either a logical system of relays and switches (Figs. II, III, not shown) or by a resistance bridge in which arms W, W 1  are varied in steps, corresponding to the counter and index settings.
Patent GB-919840-A (GB)
Title: Paint-spraying device with rotating brush
IPC: B05C17/03
Filed: 1959-12-11
Abstract: 919,840. Brushes. SIMON, W. Dec. 11, 1959 [Dec. 15. 1958], No. 42223/59. Class 19. Pigment and binder are forced by air pressure separately through two tubes 7, 8 extending through the hollow shaft 6 of a driven, rotary cup brush 9, which both encloses and applies the atomized pigment and binder mixture discharged into the hollow centre of the brush. Specification 773,894 is referred to.
Patent GB-1119173-A (GB)
Title: Optical device and method
IPC: B41M5/00
Filed: 1965-10-05
Abstract: 1,119,173. Laminates; sheet casting light polarizing plastics. J. F. DREYER. 5 Oct., 1966 [14 Oct., 1965], No. 42322/65.. Headings B5A and B5N. [Also in Division G2] Transparent polymeric materials having linear polar molecules are rendered light polarizing by bringing the softened polymer into surface contact with a matrix having orientated surface molecules, allowing the polymer to set whilst in contact with the matrix, whereby the surface molecules of the polymer take up the alignment of the surface molecules of the matrix, stripping off the polymer, and treating it with a dichroic dye; (see Divisions G2-G3). The plastic to be polarized may be extruded (Fig. 6, not shown) on to the matrix which is in the form of a rotating drum and constructed of metal (e.g. Al) or plastic (e.g. a polycarbonate), and is heat set and then air cooled. The polarized plastic, which may be a polycarbonate, a terephthalate polyester, ethyl cellulose, cellulose acetate or laminates thereof, is protected by laminating a plastic sheet thereto by calendering between rollers one of which is heated (Figs. 3 and 4, not shown).
Patent GB-1154476-A (GB)
Title: An Installation comprising a Steam Boiler and Control Means For It
IPC: F22B1/14
Filed: 1966-09-22
Abstract: 1,154,476. Direct contact steam generators. SIEMENS-SCHUCKERTWERKE A.G. 22 Sept., 1966 [30 Sept., 1965], No. 42425/66. Heading F4A. Water from a condenser 5 is passed by a pump 6 through low pressure feed water heaters 7, 8 to a feed water container 9. A feed pump 10 draws water from container 9, and passes it through high pressure feed water heaters 11, 12 and injects it into return superheated steam from conduit 14, in one or more injection cooling devices connected in series and/or parallel acting as an evaporator 13 whereby saturated steam is produced. This saturated steam is passed by circulating pump 16 through superheater 17 after which part is returned to the evaporator 13 by conduit 14 to generate further saturated steam, whilst the remainder passes through a conduit 20 to high and low pressure turbines 2, 3. Alternatively, saturated steam may be drawn off upstream or downstream of the circulating pump 16 and passed through conduit 22 and separate superheater 23 on its way to the turbines. Superheater 23 may also be used as a finishing superheater after superheater 17. The system is controlled by using fuel controller 28 to vary the heat input to the superheaters in accordance with the live steam pressure measured at point 26, and by controlling the circulating pump 16 through controller 31 in accordance with the temperature of the superheated steam entering the evaporator 13 at point 32 and by controlling the feed water flow through pump 10 through controller 34 in dependence on the steam temperature after the evaporator 13 at the point 35. Additionally the feed water flow determined by pump 10 or a regulating valve (not shown), may be controlled through controller 38 in dependence upon the temperature of the steam entering the superheater at the point 36. The live steam pressure at point 26 may be maintained constant by the action of valve 40 under controller 41. Both the feed supply and the fuel controller may then be varied in response to the load setting on the system.
Patent GB-1078207-A (GB)
Title: A method for preparing lined dentures
IPC: A61K6/896
Filed: 1964-10-19
Abstract: A method for making a new denture lined with a silicone rubber comprises placing a room-temperature-vulcanisable silicone rubber in contact with a denture base material and then curing the denture base material and vulcanising the silicone rubber while the two are in contact with each other, so as to produce a completed denture, the silicon rubber portion of which is adapted to contact the gum.  The process may comprise the steps of (1) making a stone mould of a denture model in the processing flask, (2) forming a shim having the desired thickness of the eventual silicone rubber lining on the gum model portion of the stone mould in the appropriate part of the processing flask, (3) packing an acrylic denture base material into the mould cavity in the other portion of the processing flask, (4) priming the surface of the uncured acrylic denture base material, (5) allowing the primer to dry while removing the shim from the stone mould, (6) applying a room-temperature-vulcanisable silicone rubber to the primed acrylic surface, (7) closing the flask until there is metal to metal contact of the flask parts, (8) placing the closed flask in a bath of heat-exchanging liquid at a sufficient temperature and for a sufficient time to cause the acrylic material to cure and the silicone rubber to vulcanise, (9) removing the silicone-rubber-lined denture from the flask and finishing it. Dental base plate wax may be used for the shim, the denture base material is preferably an acrylic material, e.g. methyl methacrylate and the curing and vulcanising is carried out by placing the closed flask in a water bath at about 75 DEG C. for at least 9 hours.  Silicone rubbers having a basis of polydimethylsiloxane polymer with a minor proportion of silica filler and pigment paste may be used.
Patent GB-1001643-A (GB)
Title: Improvements in or relating to television apparatus
Inventor: TYE LIONEL
IPC: H04N5/645
Filed: 1961-11-29
Abstract: 1,001,643. Television receivers. COMMUNICATIONS PATENTS Ltd. Nov. 29, 1961, No. 42694/61. Heading H4F. A television receiver cabinet 13 is closed at the front by an assembly comprising an apertured decorative panel 16 which is retained between an apertured backing panel 19 and inwardly extending limbs 21 of an edging member 17, the bottom portion of the member being made detachable so that panel 16 may be removed by sliding downwards and replaced by another. The assembly is attached to the cabinet by bolts which extend through corner webs 24.
Patent GB-1322359-A (GB)
Title: Photoelectric transducers
IPC: G01J3/12
Filed: 1970-09-07
Abstract: 1322359 Semi-conductor devices HONEYWELL Inc 7 Sept 1970 [8 Sept 1969] 42756/70 Heading H1K A photo-electric transducer comprises at least two semi-conductor laminae 1, 4, which are capable of absorbing incident radiation C, the amount of absorption of a particular wavelength varying with its position of incidence along the lengthwise dimension of the laminae, the laminae being mounted in face to face relationship wherein their lengthwise varying absorption properties are mutually offset in order that they may constitute a filtering effect on the radiation incident on lamina 4, lamina 1 providing an electrical output dependent on the radiation it receives and is capable of absorbing. The laminae may be physically offset, as shown, and may consist of mercury cadmium telluride. A mask 5 having an aperture 7 may be provided and be movable in the directions 6 in order to vary the position of the incident radiation and hence the band of wavelengths whose energies are received and absorbed by lamina 1, resulting in electrical output at terminals 2 and 3. Laminae with identically varying properties may be used or laminae with differently varying properties, where physical offsetting may not be necessary.
Patent GB-975502-A (GB)
Title: Improvements in and relating to electrical generating apparatus
IPC: H02P9/42
Filed: 1963-10-30
Abstract: 975,502. Starting prime movers and subsequently generating. BROWN, BOVERI & CO. Ltd. Oct. 30, 1963 [Nov. 14, 1962], No. 42822/63. Heading H2H. An arrangement utilizing the excitation generator 2 of an engine driven synchronous generator 1 as a starter motor comprises a switch means 6-9 for disconnecting the excitation windings 1a of the synchronous generator from the excitation generator armature 2a which is then connected through an auxiliary excitation winding 2b to a rectifier 3 fed from A.C. mains through saturable chokes 4. A separately excited excitation winding 2a may be disconnected during starting or may be fed with a reduced current through a resistor 11a.
Patent GB-1398830-A (GB)
Title: Fluid power converter
IPC: F04C2/34
Filed: 1973-09-12
Abstract: 1398830 Rotary pumps and motors RINEER HYDRAULICS Inc 12 Sept 1973 42829/73 Heading F1F The disclosure of this Specification is the same as that of Specification 1398829 but the claims are directed to the shapes of the peripheral surfaces of the rotor and stator which band the working space of the pump or motor.