baber/WOPTO huggingface dataset:
Patent GB-564163-A (GB)
Abstract: 564,163. Instruments for use in inspecting inaccessible body and other cavities. CAMERON, W. J. Feb. 9, 1943, No. 2149. Convention date, Dec. 11, 1941. [Class 81 (ii)] An instrument of the kind known as a " scope " for use in inspecting inaccessible body and other cavities, e.g. the stomach and including gastroscopes, cystoscopes, thorascopes, peritoneoscopes and indoscopes, comprises a tubular structure 13, Fig. 1, rigid at the end adjacent the eyepiece 19 and fiexible adjacent the view-transmitting means 16, Fig. 7, which is preferably a mirror 75. Suitable lens means are incorporated in the tube 13 to transmit the image from mirror 75 to eyepiece 19 regardless of the curvature of the flexible part of the tube 13. The field of vision is increased by pivoting mirror 75 so that the energizing of a solenoid 85 moves the mirror to the position shown in dotted lines in Fig. 7 through the intermediary of a plunger 87. The field of the second position of the mirror may be arranged to be continuous with that of the first position. A switch 155 completes the circuit of a lamp 131 and a switch 156 that of solenoid 85, the connecting wires being led along grooves within the tubular member 13. An expansible sheath 125 surrounding the flexible part of the tubular structure 13 may be inflated through a nipple 35 to facilitate insertion and removal through restricted channels such as the esophagus.
Patent GB-1214487-A (GB)
Title: Dynamic convergence device for three-electron-gun colour television reciever
Inventor: EGAWA SUSUMU
IPC: H04N9/28
Filed: 1967-12-12
Abstract: 1,214,487. Colour television tubes. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 12 Dec., 1967, No. 56479/67. Heading H1D. [Also in Division H4] A dynamic convergence arrangement for a three-gun colour picture tube utilizes two U- shaped cores 8 and 10 (Fig. 3) positioned as shown with respect to the internal polepieces 6, 6<SP>1</SP> ,  6<SP>11</SP> associated with the Blue Green and Red guns and energizing the comergence windings 9 and 11 through which the usual parabolic waveform correction current flows. The core 10, additionally, is provided with a further (differential) winding 12 through which a sawtooth current waveform flows. Fig. 5, shows the manner in which the parabolic current waveforms for correction in the horizontal direction are derived from horizontal fly-back pulses supplied to terminal 17 the sawtooth waveform in winding 12 being produced by supplying pulses thereto from the secondary winding 31 of the adjustable transformer 19. The direction of the correction produced by the latter may be reversed by means of switch 32 or by adjustment of potentiometer 30. Since core 10 " operates " on both the Red and the Green guns the effect on the two guns of the differential component in winding 12 is increased by providing a gap 10<SP>1</SP> in the core to reduce the coupling between the two sections of winding 11. For correction in the vertical direction the various waveforms indicated in Fig. 6 and derived from the secondary winding 43 on the vertical output transformer and from the cathode circuit of the vertical output valve 34 . are suitably combined in the windings 9<SP>1</SP> and 11<SP>1</SP> to produce the required correction waveforms including AMP and TILT components. A (differential) winding equivalent to winding 12 is not provided for correction in the vertical direction the same function being achieved by adjustment of the potentiometers 51, 52. Static comergence correction is provided by magnets 13 and 14 (Fig. 3).
Patent GB-1365650-A (GB)
Title: Stuffer box crimping device for crimping synthetic material
IPC: D02G1/12
Filed: 1971-07-26
Abstract: 1365650 Crimping fibres VEPA AG 26 July 1971 [10 April 1971] 56614/73 Divided out of 1364911 Heading D1F In a stuffer box crimper having rollers 1, 2 for feeding material to stuffer box 3, the bearings 69, 70 of roller 2 are each carried in a sleeve 71 secured in a bracket 13 pivotally mounted on pedestal 19. The bearings substantially prevent axial movement of the or each roller. Stuffer box plate 5 is mounted on pivotable arm 14 mounted on bearing 74 on the spindle of roller 2. Bearing 74 is located in sleeve 75 in arm 14.
Patent GB-1236449-A (GB)
Title: Amplifier protection circuit
IPC: C01B17/20
Filed: 1968-11-29
Abstract: 1,236,449. Protecting transistor amplifiers. RCA CORPORATION. 29 Nov., 1968 [5 Dec., 1967], No. 56759/68. Heading H3T. A transistor amplifier is protected against overload by connecting a current sensing resistor 14 (Fig. 1) and the load 12 in series between one of the collector and emitter electrodes and a reference potential and connecting a voltage responsive potentiometer 16 across the resistor and load, the tap on the potentiometer being connected to a drive reducing transistor 3 connected across the input. Protection is thus dependent upon both current and voltage. Fig. 5 shows a complementary type class B push-pull amplifier in which the load and the current-sensing resistor 14 are combined in a normally balanced bridge with resistors 16 and a series combination of resistor 17 and diode 18. The base of the protecting transistor 3 is connected to one diagonal point and the emitter to the other so that if the load impedance so changes that the voltage across the load, representing inversely the transistor voltage and the transistor current rises excessively the threshold of transistor 3 is exceeded and the input to the amplifier is by-passed. A diode may be connected in the emitter circuit of the protecting transistor to increase the threshold of conduction and diode 42 prevents conduction during the negative half-cycle of the drive. Diode 8 is back-biased for negative output voltage swings and the protection circuit is then responsive to output current to a lesser extent determined by resistor 20 or by a resistor directly shunting the diode. Phase compensation of the protecting circuit is effected by a capacitor 40. A diode 30 and a capacitor 32 in the input circuit decouple turn-off transients from the supply line.
Patent GB-1263367-A (GB)
Title: Improvements in axial flow fans
Inventor: ROWE ARTHUR JOHN
IPC: F04D27/02
Filed: 1969-11-21
Abstract: 1,263,367. Axial-flow fans. CARRIER ENG. CO. Ltd. Sept.7, 1970 [Nov.21, 1969], No.57162/69. Heading F1C.. An axial-flow fan comprises an open-ended tubular casing 1 having access means in the form of a door (23) and removable panels (24, 25), Fig. 2 (not shown), and supporting a directly coupled motor 3 and impeller 4, a housing 5, 6, 7 enclosing the motor and a coupling 10 and arranged in sealing relation with a bearing housing 12, and hollow aerofoil blades 13, 14, (15) communicating with the interior of housing, blades 14, (15) also communicating with the exterior of the casing and the blade 13 extending lengthwise of the casing and also communicating at 16 with the air intake end of the casing. The depression created in the intake end of the casing by the flow through it draws atmospheric air through the blades 14, (15) into the housing 5, 6, 7 and around the bearing housing 12 and the motor 3 to cool the bearings and the motor and thence through the blade 13 into the casing.
Patent GB-1411135-A (GB)
Title: Process for manufacturing a coarse powder
IPC: B28C1/06
Filed: 1972-12-11
Abstract: 1411135 Clay powder NIRO ATOMIZER AS 11 Dec 1972 [29 Dec 1971] 57167/72 Heading C1A [Also in Division F4]  In the production of coarse powder with a relatively high moisture content clay slurry pumped from tank 1 is atomized from nozzles 3 over a fluidized bed 4 which is divided into first and second sections supplied with air at 450‹ C. or hotter and 100‹ C. respectively. The temperature of the air discharged from the second section is kept below 50‹ C. The particles from the bed are graded by screen 5, the finer particles and the coarser which are ground by mill 6 passing to hopper 7 to be reintroduced to the first section of the bed. The intermediate particles constitute the final product. Air discharged from the bed 4 passes to a cyclone 8 from which the separated particles are recycled to the first section of the bed. Particles remaining in the air are removed by a filter 9 and passed back to tank 1.
Patent GB-1451377-A (GB)
Title: Method for the synthesis of plus-minus glaziovine
IPC: B01J19/12
Filed: 1973-12-10
Abstract: 1451377 Synthesis of (Œ)-glaziovine SIPHAR SA 10 Dec 1973 [22 Dec 1972] 57205/73 Heading C2C The invention is a novel process for synthesis of (Œ)-glaziovine of the Formula I which comprises reacting a compound of the Formula (XVIII) wherein OR is an ether or ester group which may be hydrolysed without affecting the remainder of the molecule with chlorine, bromine or iodine or a reactive derivative thereof to obtain the 8-halo-derivative (XIX) wherein X is chlorine, bromine or iodine, hydrolysing the compound (XIX) with diluted mineral acid or a base to obtain the compound (XX) and exposing the compound (XX) to ultraviolet radiation having a wavelength more than 280 millimicrons at a pH of from 12À0 to 12À2 to form a compound I. The intermediate of the Formula (XVIII) is prepared by reacting p-benzyloxyphenylacetic acid with 4 - hydroxy - 3 - methoxyphenethylamine to yield N - (4- hydroxy - 3 - methoxyphenethyl)- 4 - benzyloxyphenylacetamide which is cyclized by the action of phosphorus oxychloride to yield 1 - (4 - benzyloxybenzyl) - 6 - methoxy- 7 - hydroxy - 3,4 - dihydroisoquinoline which is reduced to 1 - (4 benzyloxybenzyl) - 6 - methoxy- 7 - hydroxy - 1,2,3,4 - tetrahydroisoquinoline which is N-methylated to yield the required compound. Pharmaceutical compositions of the compound I have tranquillizing and anti-anxiety activity.
Patent GB-1400440-A (GB)
Title: Power tools
IPC: B27B5/14
Filed: 1972-06-06
Abstract: 1400440 Grinding E SANTILLI 6 June 1972 57333/71 Heading B3D [Also in Division B5] A power tool comprises an annular tool, e.g. a saw blade 36, Fig. 5, or a grinding wheel, a drive roller 30 mounted on a drive shaft for rotating the tool about its vertical axis 58, a tool support means 70 which acts as a pivot about which resistance forces R T  between a workpiece 80 and the tool tend to swing the tool, and means acting via the roller 30 to counterbalance the forces R T . The rotational axis of the drive shaft is inclined to the plane of the tool, and an extension of the axis intersects the plane within a domain contained between a line Y, Fig. 1, starting at the midpoint of the tool-drive roller interface and extending in the plane of the tool in the direction of the radius through the mid-point, and a line X through the mid-point, at right angles to the line Y and on the working side thereof. The counterbalancing forces may be produced by adjusting the angle between the axis of the drive roller and the line Y, or by adjusting the pressure of the drive roller on the tool, or by moving the drive roller radially of the tool. As described, an annular saw includes a motor housing 21 connected to a blade housing 32. The motor housing includes a motor 26 which drives the roller 30, and the blade housing 32 includes guide rollers for restraining the blade against axial movement, and support rollers which restrain the blade against radial movement. The guide rollers engage the faces of the blade and the support rollers engage the inner rim or annular grooves in the blade, e.g. as is Fig. 11B. Some of the rollers maybe replaced by stationary self-lubricating pads, e.g. as in Fig. 8H, which also serve to wipe the saw blade. The tool may include a spacer plate located within the saw blade. Various methods are described for providing the counterbalancing means. In one embodiment the blade housing 32, Fig. 5, is pivoted to the motor housing for movement about an axis parallel to the axis 58 and passing through the mid-point of the roller-tool interface so that the angle between the drive axis and the line Y, Fig. 1, varies as the reaction forces vary. In another embodiment cam means is provided on the drive shaft of the roller 30 to urge it radially inwardly of the saw blade when increased resistance is encountered, thus increasing the pressure between the drive roller and the blade. In further embodiments, e.g. Fig. 11B, the blade housing 32 is pivotally mounted on the motor housing, e.g. at 96, and carries a roller 66 which is urged towards the drive roller 30 when the resistance increases. Quick release of the blade is also catered for in the Fig. 11B embodiment by pivoting the housing 32 by means of a lever 100. Other quick release means involving movement of the blade housing or the drive roller are also described, Figs. 11B, 12B, 13, 14, 15A, 15B, 15C, not shown.
Patent GB-1145179-A (GB)
Title: Packing ring
IPC: F16J15/3284
Filed: 1967-12-20
Abstract: 1,145,179. Shaft seals; piston rings. J. C. LUDOWICI & SON Ltd. 20 Dec., 1967 [21 Dec., 1966], No. 57909/67 Headings F2B and F2T. A packing ring 1 for use between reciprocating members comprises a rubber core 5 embedded in a plastics casing formed by two identical trapezium section ring parts 2 joined together at their wide faces 4 and each having a groove 3 forming a recess for the core 5.
Patent GB-1141690-A (GB)
Title: Cis-trans isomerisation of unsaturated fatty acids or their esters
Inventor: SILVERSTONE GERALD ALFRED
IPC: C11C3/14
Filed: 1966-12-29
Abstract: 1,141,690. Isomerization of unsaturated acids and esters. VICTOR WOLF Ltd. 25 Oct., 1967 [29 Dec., 1966], No. 58112/66. Heading C2C. Cis/trans isomerization of conjugated, unsaturated fatty acids and their esters is effected by heating with sodium or potassium bisulphate. Suitable fatty acids are those derived from dehydrated castor oil, isomerized safflower or tall oil, or a linseed fatty acid or a mixture of acids containing eleostearic acid. Examples describe the isomerization of a commercial dehydrated castor oil fatty acid containing about 90% linoleic acid.
Patent GB-1173460-A (GB)
Title: Improvement in the making of Refractory Shells
IPC: B22C1/16
Filed: 1967-12-29
Abstract: 1,173,460. Moulding moulds. FONDERIES DE LAVAL and J. W. F. HITCHON. 29 Dec., 1967 [20 Nov., 1967], No. 59061/67. Heading B5A. A process for making refractory shell moulds comprises the steps of dipping a pattern alternately into an ethyl silicate refractory slurry and a sodium silicate refractory slurry each of which contains additives for gelling the previous coating. The additive to the sodium silicate slurry is one of ammonia, a water-soluble ammonium salt, piperidine, or monoethanolamine and the additive to the ethyl silicate is an acid and one of an alcohol, an inorganic salt which contains the chloride ion and is soluble in water, acetone or dioxane.
Patent GB-1189546-A (GB)
Title: Improvements in or relating to Ironing Machines.
IPC: D06C15/04
Filed: 1968-12-12
Abstract: 1,189,546. Ironing machines. FERM A.S. 12 Dec., 1968 [14 Dec., 1967], No. 59186/68. Heading D1A. In an ironing machine comprising a driven roller 10 and a movable sole 12 wherein the motor stator 18 is movable by the reaction when the motor 8 is actuated so as to control movement of sole 12 in at least one direction. A shaft 6 is rotatably mounted an bearings 15, 16 in a housing 4 and is rigidly secured to the stator section 18 of the reversible motor 8 on which is provided the casing for reduction geering which transmits the drive to a disc 26 secured to roller 10 adjacent its centre. The end of roller 10 is supported on three ball bearings 28 mounted on housing 4 which also carries brake shoes 30, 32 which co-operate with the interior of the roller cylinder and act in opposite directions. Secured to shaft 6 is a cross-member 34, 36 whose arm 34 is connected to rod 38 which is loosely connected to a pivoted arm 40 biassed upwardly and downwardly respectively by springs 44 and 56. Movement of sole 12 by rotation of shaft 6 is limited by a pin on arm 36 of cross-member 34, 36 which engages stop member 48. Switches 52, 54 are actuated by cam member 50 on 'shaft 6 respectively in the retracted and operative positions of member 12. Brake shoe 32 is pressed out of engagement with roller 10 by an arm 60 on stator 18 when the latter rotates anti-clockwise. A disc 66 on rotor 22 is locked on stator 18 by a brake 64 operated by switch 54. In operation, foot switch 70 is actuated and sole member 12 will move against roller 10 which will rotate if switch 72 i's in position I and motor 8 is energized. Initially, shoes 30, 32 are operative to lock the roller switch 52 being open until shaft 6 rotates but cut out of circuit by switch 70 being in position II. Stator 18 is rotated anti-clockwise and linkage 34, 38 is stretched arm 60 lifts shoes 32 away from roller 10 and pin 46 engages stop 48 to hold stator 18 when roller 10 will rotate clockwise for ironing. When switch 70 is released and returns to position I, switch 52 will energize the motor to rotate clockwise, brake 32 will engage roller 10 again and member 12 will be swung back when switch 52 will be switched off. If switch 72 is pre-set in position II, the roller 10 will not rotate when the member 12 engages it and the arrangement will act as a press. If the current fails, the force on the stator will cease shoe 32 will push arm 60 anti-clockwise to bring links 34, 38 past equilbrium and spring 56 will raise arm 60 to lift member 12 off roller 10. In modifications, the stator movement may be axial and switch 54 may connect a resistance in the motor circuit so that the motor power is insufficient to rotate the roller. Foot switch 70 may have three positions and actuate switch 54.
Patent GB-1244976-A (GB)
Title: Hydraulic control apparatus and practical application thereof
IPC: F15B13/06
Filed: 1968-12-12
Abstract: 1,244,976. Valves. TRANS-INDENT ETAB. 12 Dec., 1968 [14 Dec., 1967], No. 59216/68. Heading F2V. A valve which may be used for the hydraulic control of an injection moulding machine comprises a rotor 3 rotatably mounted in a cylinder 1 and having control grooves 15, 16 co-operating with liquid inflow and outflow ports 21, 23 and 25, 26, the grooves 15, 16 communicating through longitudinal ducts 10, 11 with supply and exhaust ports 22, 28 respectively. The rotor which may be driven continuously at an adjustable speed or intermittently through a Geneva wheel, is mounted in needle bearings 8 with a clearance of 6À01 to 0À02 mm. from the inner wall of the valve easing 1. The grooves 15, 16 may be circumferentially offset with respect to each other so that there is a time delay between each fluid supply and exhaust operation, and there may be four or more ports to each set.
Patent GB-1291472-A (GB)
Title: Method and apparatus for grinding convex points on twist drills
Inventor: SOUTHLAND JOHN ROBERT
IPC: B24B3/26
Filed: 1969-12-04
Abstract: 1291472 Grinding twist drills; drills OMARK-WINSLOW AEROSPACE TOOL CO 4 Dec. 1969 [4 Dec 1968] 59315/69 Headings B3C and B3D Apparatus for grinding a twist drill 13 comprises a drill holder 18 for rotating the drill 13 about its axis D-D<SP>1</SP>, a contoured rotatable grinding wheel 10, drive means 32-39 for the drill holder 18, and cam-operated means synchronized with the drive means for moving the drill holder 18 and drill 13 relative to the wheel 10 to produce a required grinding pass. The holder 18 is supported by a housing 24 rotatable about and reciprocable along its axis B-B<SP>1</SP> under the control of cams 46, 48 mounted on a shaft 44 geared to the main drive shaft 32 of the holder 18. A shaft 64 linking the housing 24 to a cam lever 62 resting on a fixed fulcrum 66 controls vertical rise of the holder 18, with return under gravity, while a second shaft 54 controls oscillation of the holder 18 against a spring 58, under the action of a second cam lever 52 and fixed fulcrum 56. The wheel profile, Fig. 3, includes an arcuate segment y between tangential straight segments x, z, and as the drill 13 is rotated from one flute to the next, the cams 46, 48 rotate once to cause a preset downfeed/infeed combination, e.g. Fig. 2, terminated by retraction for the start of the next pass over a following land L. An exemplary drill, Fig. 6, includes a chisel edge c and curved cutting lips r bordering surfaces L which are arcuate in cross-section axially of the drill.
Patent GB-1414039-A (GB)
Title: Process for the flotation of tin ores
IPC: B03D1/008
Filed: 1973-12-21
Abstract: 1414039 Froth flotation BERGBAU-UND HUTTENKOMBINAT ALBERT FUNK VEB 21 Dec 1973 [27 Dec 1972] 59420/73 Heading B2H In a process for the flotation of tin ores there is used as a collector a compound of the formula: in which c n  is a hydrocarbon radical containing 3 carbon atoms, at least one of the hydrogen atoms of which has been replaced by a substituent with a negative induction effect, R is an aliphatic hydrocarbon radical containing at least 2 carbon atoms, and M represents a hydrogen ion or an alkali metal cation; and/or a compound of the formula: in which A represents 1, 2, 3 or 4 substituents with a negative induction effect and R' is an aliphatic hydrocarbon radical; and/or a compound of the formula  in which C m  is a hydrocarbon radical, C k  and C 1  are hydrocarbon radicals with k and l= 0, 1, 2 or 3 carbon atoms; and R 1 , R 2 , and R 3  represent hydrogen or hydrocarbon radicals. Suitable substituents having a negative induction effect are F, Cl, Br, I, COO-, OH and COOM. The flotation process is preferably carried out at a pH of 2 to 8 in the presence of foaming non-ionic polar and/or non-polar additives e.g. alcohols, and/or of oils and/or of suppressants e.g. sodium hexafluorosilicate, waterglass or starch. Examples describe the use of α-bromohexadecanoic acid, the sodium salt of tridecane-1, 3-carboxylic acid, and the sodium salt of α, α-undecane-dicarboxylic acid as collectors.
Patent GB-1196849-A (GB)
Title: A Friction Disc Clutch Assembly.
IPC: F16D13/72
Filed: 1968-12-17
Abstract: 1,196,849. Friction clutches. DR.-INGh.c.F. PORSCHE K.G. 17 Dec., 1968 [7 Feb., 1968], No. 59844/68. Heading F2C. A clutch friction plate 8 is secured to a housing 7 and an entrainment disc 13 by bolts 18 whose nuts 19 are welded to the disc 13. The disc includes a flange 14 bolted to an engine crank-shaft 16 and has ventilation apertures for co-operation with ribs 10 on the friction plate 8. A pressure plate 4 is biased against a friction disc 1 by a diaphragm spring 5 and alignment pins 21 pass through the housing 7, the plate 8 and the disc 13. The plate 8, which is preferably of an aluminium alloy but which can be formed from steel or cast iron, has starter gear teeth 17 preferably treated to improve wear resistance.
Patent GB-1221478-A (GB)
Title: Flame scanner head with electrical shutter
IPC: F23N5/08
Filed: 1968-12-17
Abstract: 1,221,478. Photo-electric flame detectors. COMBUSTION ENG Inc. Dec. 17, 1968 [Dec. 27, 1967], No.60011/68. Heading G1A. A flame detector comprises a sensing element mounted in a tube with a shutter biased toward an open position and actuable electro-magnetically into a closed position where it shields the sensing element from the flame. Failure of a flame irradiating a discharge tube detector 16 is simulated by closing shutters 78, 80 formed of a non-magnetic stainless metallic material having a spring constant unaffected by high temperature. Closure of the biased-open shutters is effected by D.C. energization of coils 38 of horseshoe magnets 30, 32 which co-operate with magnetic members 28 on the shutters. Quick opening of the shutters is ensured by application of a small A. C. energization when the D.C. is removed. The electrodes of the tube 16 are parallel to the slot formed by shutters 78, 80 as they open.