baber/WOPTO huggingface dataset:
Patent GB-863987-A (GB)
Title: Improvements relating to electric cable terminations
Inventor: HARTILL ERIC RAYMOND
IPC: H02G15/22
Filed: 1957-12-12
Abstract: 863,987. Cable end sleeves. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 11, 1958 [Dec. 12, 1957], No. 38682/57. Class 36. A termination for a fluid-cooled cable comprises an insulating casing 9 supporting two spacedapart conductive members 7 and 8 between which extends a helix of insulating tubing 17, one of the members 8 being adapted to receive the cable conductors 3, and to couple the cable fluid duct 2 to one end of the tubing 17 and the other member 7 having a coupling 19 for feeding fluid, e.g. water, to the other end of the tubing. The casing 9 is a porcelain cylinder, and the cable, which may be armoured, is sealed through one end-member 7 by a gland 11, the insulation being terminated at a second gland 13. The other end member 8 is provided with an annular connection assembly 16 and 12 into which the cable conductor and fluid duct are sealed and which terminates outside the casing in a terminal 22. A fluid connecting chamber 21 formed on member 8 communicates with the end 20 of tube 17. The interior of the casing may be filled with oil or compound by means of opening 24 and a stress-shield 23 provided. Specification 859,443 is referred to.
Patent GB-1028603-A (GB)
Title: Winch
IPC: B66D1/74
Filed: 1964-09-23
Abstract: 1,028,603. Winches. GEWERKSCHAFT EISENHUTTE WESTFALIA. Sept. 23, 1964 [Sept. 25, 1963], No. 38768/64. Heading B8B. In a cable railway winch having a main support plate 11, Fig. 2, attached to a base frame 10, the plate 11 has attachment bolt holes 14, Fig. 1 (not shown), symmetrically arranged about its horizontal axis so that the arrangement may be readily converted to left or right hand arrangements by inversion of the base 10 and plate 11. The drive pulleys 15 together with the brake 20 are overhung from a shaft extension 16 (not shown) of the gear box 17. A side plate 12 supporting the shaft 22 for the cable reversing pulleys 21 may comprise two parts 12a, 12b attached to the plate 11 through bolts 19.
Patent GB-1094460-A (GB)
Title: Parametric amplifier
Inventor: AITCHISON COLIN STUART
IPC: H03F7/04
Filed: 1966-09-01
Abstract: 1,094,460. Parametric amplifiers. MULLARD Ltd. Sept. 1, 1966, No. 38999/66. Heading H3B. A parametric amplifier arrangement consists of two individual parametric amplifiers with their signal input ports connected together by a transmission line one quarter-wavelength long at the signal frequency. The input signal is applied to one of the input ports. The arrangement is stated to have a greater bandwidth than the single parametric amplifier. A further similar parametric amplifier arrangement, or a single amplifier, may be connected to the arrangement by a further quarter-wave transmission line.
Patent GB-1006205-A (GB)
Title: Improvements in or relating to gas turbine propulsion units
Inventor: MULLINS JOHN ALBERT
IPC: F02K1/00
Filed: 1963-10-05
Abstract: 1,006,205. Gas turbine jet engines. ROLLSROYCE Ltd. Nov. 1, 1963 [Oct. 5, 1963], No. 39309/63. Heading FIJ. [Also in Division B7] A gas turbine jet propulsion engine comprises in flow series a compressor, combustion equipment and a turbine driving the compressor and one or more orientable propulsion nozzles which receive the exhaust gases from the turbine and a part of the air compressed by the compressor, this air having by-passed the combustion equipment and turbine. In the two-shaft by-pass engine shown, two nozzles 28 are provided and are rotatable about an axis 30 by an air motor (Fig. 2, not shown). The cold flow passes into a manifold 20 encircling the engine through an annular duct 18 and the hot flow passes into the manifold through a chamber 25 and a duct 22, guide vanes 21, 27 imparting a circumferential velocity component to the gases. In a modification (Fig. 4, not shown) the vanes 21 are dispensed with and the vanes 27 are replaced by a series of nozzles. Alternatively (Figs. 5 and 6, not shown) the vanes 27 may be dispensed with and the vanes 21 replaced by a perforated plate. The engine may be of the single shaft type with the cold flow provided by a fan, the blades of which are mounted on the tips of the compressor blades. The engine thrust may be increased by burning fuel in the duct 18 or in the duct 22. The invention is also applicable to engines with centrifugal compressors. The engine is fitted in the fuselage of an aircraft with the axis 30 passing through the centre of gravity and two vertically disposed lift engines may also be provided, one ahead of and one behind the unit.
Patent GB-961965-A (GB)
Title: Improvements relating to thrust reversers and thrust spoilers for jet engines
Inventor: HART JESSE STANLEY
IPC: F02K1/56
Filed: 1960-11-16
Abstract: 961,965. Jet propelled aircraft. ROLLSROYCE Ltd. Nov. 10, 1961 [Nov. 16, 1960], No. 39387/60. Heading B7G. [Also in Division F1] A jet propulsion engine thrust reverser or spoiler comprises a duct 11 containing a cupshaped member 14 open at its rear end and defining an angular flow path 17 with the duct, an outlet passage 18 from the interior of the member 14, the passage extending or being extendable forwardly or transversely of the duct, and an obturating member 24 movable axially of the duct between a position in which it unblocks the rear end of the duct and blocks the open end of member 14, and a position in which it blocks the rear end of the duct and unblocks the open end of member 14. In the Figure, the full line position of member 24 is for thrust reversal or spoiling, the broken line position is for cruising flight, and the dashed position is for reducing noise by increasing the outlet area, and thus decreasing the back pressure on the turbine and reducing the turbine exhaust velocity. The duets 18 may extend radially to provide thrust spoiling rather than reversal, or may have end portions movable between thrust spoiling and reversal positions. There may be only one duct 18, and member 24 may be dimensioned so as to abut the rear part 30 of member 14 instead of being slidable within it, so that the dashed line noise reducing position is not available. Noise suppression means (see Division F1) is then fitted to nozzle 28.
Patent GB-886481-A (GB)
Title: Transistorised superheterodyne radio receiver to receive either fm or am signals of a small channel spacing
IPC: H03D5/00
Filed: 1959-11-20
Abstract: 886,481. Radio receiver switching arrangements; transistor amplifying circuits. STANDARD TELEPHONES & CABLES Ltd. Nov. 20, 1959 [Dec. 24, 1958], No. 39443/59. Classes 40(5) and 40(6). A transistorised superheterodyne receiver has a common I.F. amplifier for either A.M. or F.M. reception, and a filter circuit connected to the input of the I.F. amplifier, the bandwidth of which is adjustable according to the type of modulation to be received. For amplitude modulated reception, the switch 4 is set to the A.M. position and signals received on the aerial 1 are fed through the R.F. filter 2 into the mixer 6. The output from the mixer is fed to the filter 7 which is arranged to have a narrow pass band characteristic, and the output of the filter is fed through an I.F. amplifier 8 into the demodulator 9. For reception of frequency modulated signals, a double superhet system is employed by switching in an additional mixer 11 and I.F. filter 12. Frequency modulated signals received from the aerial 10 are fed through the mixer 11 and filter 12 through the switch 4 set to the F.M. position and into the mixer 6 the output from which is at the same I.F. frequency as that used for amplitude modulated signals. Further switches ganged with the switch 4 render the filter 7 broad band, and also switch a frequency discriminator circuit in the demodulator 9 to give an audio frequency output. In a practical circuit (Fig. 2) the mixer 6 comprises a transistor Tr1 the output from which is fed into the filter 7. With the switches in the A.M. position the filter comprises sections 15, 27, 28, 29 and in the F.M. position only section 15 is in circuit. The I.F. amplifier 8 comprises two more transistors Tr2, Tr3, to which A.G.C. voltage may be applied over lead 28b for A.M. reception. The output from the I.F. amplifier is fed into the demodulator 9 which comprises a frequency discriminator for frequency modulated signals and a detector circuit comprising detector 38 for amplitude modulated signals, the audio output being taken through capacitor 43 by the resistance network 41, 42. Figs. 3a and 3b (not shown) give alternative forms of the filter 12, that of Fig. 3b including an image frequency trap.
Patent GB-873874-A (GB)
Title: Method of producing anthraquinones
IPC: C07C51/31
Filed: 1958-12-08
Abstract: A method of producing anthraquinones comprises contacting a mixture containing naphthaquinone vapour and phthalic anhydride vapour with an inert liquid water-immiscible solvent having a boiling point at or above about 230 DEG C. and a density different from that of water, said liquid being held at a temperature between ambient temperatures and 200 DEG C. and thereby recovering said <PICT:0873874/IV (b)/1> naphthaquinone and phthalic anhydride from the gas mixture as a solution in said solvent; removing the phthalic anhydride from the resulting solution by contacting it with an aqueous extracting medium at a temperature above 70 DEG C., reacting the resulting raffinate with a butadiene by passing into said raffinate a butadiene (as herein defined) while keeping said raffinate at a temperature of at least 80 DEG C. and keeping the pressure sufficient to keep said butadiene liquid at the temperature used to form a condensation product containing tetrahydroanthraquinone, and oxidising the tetrahydroanthraquinone and recovering the anthraquinone from the oxidation mixture.  The butadiene may be butadiene-1,3 or butadiene-1,3 substituted by one or more substituents such as halogen, alkyl, alkenyl, aryl, alkoxy and acyloxy.  These substituted 1,3-dienes give rise to the correspondingly substituted anthraquinone.  A preferred embodiment of the process is illustrated in Fig. 1 where naphthalene is vaporized in 1 and oxidised in 2 to a mixture containing naphthaquinone and phthalic anhydride.  This gaseous mixture is contacted with the inert liquid, e.g. a chlorinated hydrocarbon, a ditolyl ethane or diphenyl ether in absorber 3, which may be in the form of three scrubbers connected in series. The solution is then scrubbed with water in 4 to give an aqueous extract which is re-extracted with the inert liquid in 5 to recover all the naphthaquinone and then worked up to recover the phthalic anhydride.  The naphthaquinone solution is reacted with the butadiene in 8 which may be a two-stage reactor; the resulting tetrahydroanthraquinone extracted, in the form of a salt, using aqueous alkali, and then oxidised, again in one or more stages, using air to give the anthraquinone.  Examples describe the preparation of anthraquinone and 2-methyl and 2-chloro-anthraquinone.  Specification 731,370 is referred to.
Patent GB-1153170-A (GB)
Title: Improvements in and relating to fasteners
IPC: E02F3/96
Filed: 1967-08-30
Abstract: 1,153,170. Anchoring nuts. VARE CORP. 30 Aug., 1967. No. 39615/67. Heading F2H [Also in Division E2] A one-piece spring sheet metal fastener comprises a lower arm portion 11 connected by spring strips 13 to a parallel plate 15 between which plate 15 and the lower arm portion 11 an apertured supporting panel of various thicknesses is gripped. The plate 15 depends from an inclined panel 14 integral with the spring strips 13 which extend from a connecting portion 12 integral with the lower arm portion. The plate 15 has a split protuberance with a central aperture with a helical edge portion for engaging a screw which passes through holes in the lower arm portion 11 and in the supporting panel for securely holding panels of various thicknesses in engagement with the parallel surfaces of the plate 15 and the lower arm portion 11. A finger 18 projecting from the base of the protuberance snap engages the aperture in the supporting panel to hold the panel in correct screw-engaging position with the end against and down-turned lip 16<SP>1</SP> of the plate 15.
Patent GB-1217809-A (GB)
Title: A control system for a closed loop step motor
Inventor: HEATH JOHN STEWART
IPC: H02P8/00
Filed: 1969-08-08
Abstract: 1,217,809. Control of stepping motors. INTERNATIONAL BUSINESS MACHINES CORP. 8 Aug., 1969, No. 39687/69. Heading H2J. [Also in Division G3] A stepping motor has stator windings 1-4: adapted to be energized in pairs, the rotor being located between a pair of windings at the end of each step. An encoder comprises a disc mounted on the rotor shaft and having a semi-circular slot associated with photo-sensitive devices P, Q, which produce pulses on lines 13, 14 when the slot allows the passage of light, the duration and repetition rate of the pulses being dependent upon the rotor velocity. The lines 13, 14 are connected to a logic network arranged so that a signal on line 18 for clockwice rotation energizes windings 1 or 3 provided that device Q is " on " or " off." A signal on line 21 for anticlockwise rotation energizes windings 3 or 1 when the device Q is " on " or " off." The windings 2 or 4 are energized in response to the " on " and " off " state of the device P. A line 29 is energized or de-energized for clockwise or anticlockwise operation respectively. When lines 29 and 36 are energized, for example, a signal appears on line 18. A step-down counter C is loaded with the step-count and is decremented by a pulse network 41 which supplies a pulse for each step of the motor. At a predetermined number of steps before the desired destination, line 38 is energized to reduce the stepping rate so that, during clockwise motion, lines 37, 21 are energized and a reverse torque is applied to the motor for an interval equal to the duration of a pulse from unit 40. If the original speed is high, the reverse torque is applied during each step until a low stable speed is reached whereupon the reverse torque is followed by a forward torque during each step. When the counter reaches a count of one, line 44 is energized and the motor is retarded further for a period determined by unit SS1, at the end of which a mechanical detent locks the motor at its desired destination. The speed of the motor is stabilized at a higher value, before the counter is decremented to the predetermined number, by allowing the motor to coast for a fixed period determined by unit 63 during each step. If the step interval is smaller than the period of unit 63, the motor windings are de-energized. If the step interval becomes greater, than the said period, the line 28 is energized for the remainder of each step interval. In another arrangement, the motor is coupled to a tachometer generator which is connected to a differential amplifier producing a direct voltage proportional to the difference between the actual and required speeds of the motor. The output of the amplifier increases the period of a single-shot unit to decrease the speed when the tachometer voltage exceeds a reference voltage, Fig. 3 (not shown).
Patent GB-1520643-A (GB)
Title: Method for forming thread reserve windings
IPC: B65H54/00
Filed: 1975-09-30
Abstract: 1520643 Reserve windings in continuous winding machines MASCHINENFABRIK RIETER AG 30 Sept 1975 [4 Oct 1974] 39930/75 Heading D1J  In a machine in which the thread being wound is automatically transferred from a full bobbin to an empty bobbin, the thread is initially wound on the new bobbin to form thread reserve windings thereon, the thread being guided in such a way that at least three superimposed reserve windings are formed, the direction of the helical angle of each wrapping being opposite to the direction of the next following wrapping. Fig. 6 shows an arrangement in which when a package is fully wound an arm 2 swings the full package 33 away from a drive roll 5, Fig. 3, and swings an empty bobbin tube 4 into engagement with the drive roll 5. At the same time the empty bobbin tube 4 is moved in the direction A to align one end of the bobbin tube 4 with a notch 17 in a rod 16, see also Fig. 4, the thread 7 being automatically removed from the normal thread traversing mechanism and caught by the notch 17. Rod 16 can be moved by a piston rod 15, Fig. 4, so as to move the notch 17 and a thread guide plate 18 to the right in Fig. 4 and so cause the thread to be laid as a first layer of reserve windings W", Fig. 5, on the empty bobbin 4. Further movement to the right of the rod 16 causes a plate 20 to swing to the left across the plate 18 and so cause the thread 7 to ride up both the plate 18 and the plate 20 to lay a second layer of reserve winding W', Fig. 5 on top of the layer W" but in the opposite direction to the layer W". Further movement of the rod 16 to the right causes the plates 18 and 20 to overlap so much that the thread 7 rides up over the top of the plate 20 so as to be guided solely by the plate 18 that is still moving to the right. This causes a third layer W of reserve winding to be laid on the first two layers, the third layer W having the direction of its helical turns opposite to that of the layer W'.  Once these three layers have been laid as reserve windings the empty bobbin tube 4 is moved back in the direction B, Fig. 3. to its normal wind up setting and the thread leaves the notch 17 and is picked up by the normal yarn traversing mechanism 11 so that the wind-up operation proper can then commence. Each layer of the reserve winding may be wound with a different helical angle and there may be more than three layers constituting the reserve winding. Some of the apparatus of the present invention is the same as that described in Specification 1332182.
Patent GB-1056442-A (GB)
Title: Improvements in and relating to the sulphurization of the surfaces of iron and steel
IPC: C23C8/62
Filed: 1963-10-10
Abstract: The surface of an iron or steel article is sulphurized by surrounding the article with a penetrant consisting of powdered carbon, free or combined sulphur and a hydrogen compound and heating the powder and article to 400-600 DEG C. for a sufficient time.  The penetrant may be amorphous carbon powder produced from a heavy oil of high sulphur content or a synthetically produced powder with a sulphur content of 1-3% and a hydrogen compound such as a quinone compound. Sulphurizing may be effected by heating the article surrounded by the penetrant in a crucible having a lid sealed thereto or in the apparatus of Fig.2 (not shown) where rapid cooling of the treated article to below 100 DEG C. before exposure to the atmosphere is required.  In this latter apparatus the article and penetrant are raised from the crucible bottom on a gas permeable plate.  An inlet pipe for inert gas passes through the lid and terminates below the porous plate.  An outlet pipe passes through and terminates at the level of the lid.  At the end of the sulphurizing process valves in the pipes are opened to allow the cold inert gas to pass through and cool the mass.  The crucible and contents are heated in a fluidized bed of carbon in an electric furnace.
Patent GB-1482672-A (GB)
Title: Machine tools
IPC: B23B47/18
Filed: 1974-09-16
Abstract: 1482672 Removing cuttings in machine tools INFRANOR SA 16 Sept 1974 [17 Sept 1973] 40213/74 Heading F4X [Also in Division B3] At the end of the cylindrical body 1, 38 of a machine tool, such as the illustrated, printed circuit drilling machine (see Division B3), a suction chamber, comprising two half chamber sections 11a, 11b is mounted by means of a nut 12 screwed on to a slidable bush 10 urged outwardly from the body by a spring 13. The chamber surrounds the tool 8 and is connected through pipe 19 to an exhaust pipe 22 of a rotary tool-driving motor in tool head 7, so that dust and swarf around the tool are entrained by suction through pipe 19.
Patent GB-1034137-A (GB)
Title: Brake mechanism
IPC: B60T17/22
Filed: 1963-10-14
Abstract: 1,034,137. Power operation of brakes. BENDIX CORPORATION. Oct. 14, 1963 [Oct. 22, 1962], No. 40504/63. Headings F2E and F2F. A foot pedal which normally has a short travel for power operation of brakes is arranged to be given an increased travel whenever the power fails, to provide the necessary leverage for foot operation. Pump 12 supplies accumulator 14 actuator (brake valve) 16 and the pedal raiser 10. The latter has a piston 26 connected at 38 to one end of the centre pivoted lever 32, the other end serving as the pivot of pedal 40. When the accumulator pressure falls below a predetermined value spring 28 moves piston 26 to the right to rock lever 32 and move pedal to the dotted position. A buzzer 22 in series with the ignition switch and a pressure switch 24 provides audible warning of low pressure. A modified pedal raiser (Fig. 2, not shown) operates as follows. With pedal raised in the " no-power " position the rising pressure entering at 68 and passing valve 130, passages 62, 54, 56, 126, and 58 enters chamber 50 and maintains the piston 132 in the rightwards position with pedal raised. When the predetermined pressure is reached, valve 98 moves left, seating ball valve 130 and unseating ball valve 120 to open chamber 50 to the reservoir. The pressure in space 144 then moves piston 132 left to lower the pedal. Since the area of ball 130 is slightly greater than plunger 98 the pedal will not rise until the pressure drops somewhat below the predetermined pressure. A third embodiment (Fig. 3, not shown) provides in one unit the power brake valve, a master cylinder actuated by the pedal on power failure, and the pedal raiser. For normal operation movement of the pedal moves rod 162 leftwards, plunger 166 unseating valve 196 to supply pressure fluid from cavity 156 to the brake connection at 160. On failure of the supply to chamber 156 plunger 166 moves further left to take up lost motion at the " C " washer 168 and then moves piston 152 leftwards to displace fluid from chamber 158 through outlet 160 to apply the brakes. The position of members 152, 166 within the housing is varied from a left position giving a short pedal stroke, to a rightward one by a piston 184 controlled by a spring-biased slide valve in a chamber 182. Insufficient pressure allows the valve to connect both sides of the piston to the reservoir to allow spring 190 to move the piston 184 to the right.
Patent GB-938871-A (GB)
Title: Parking aid
IPC: B60R19/48
Filed: 1958-12-16
Abstract: 938,871. Electric switches. H. A. A. GRAVES, and G. F. GRAVES. Dec. 16, 1959 [Dec. 16, 1958], No. 40615/58. Class 38 (5). [Also in Group XXXI] Means for assisting manoeuvring of a vehicle comprises one or more probes stowed transversely across the front (or rear) of the vehicle and movable under control of the driver into an extended position in which at least a part of the probe or probes is spaced from the vehicle, and means operated upon contact of an extended probe with an object to give an indication to the driver. A probe 1, shaped in conformity to the bumper of a car or like vehicle, is mounted on two arms 3 and is normally held by springs 7 in a position adjacent the bumper. Upon the closure of a switch 6 by the driver, solenoids 4 cause the arms 3 to move the probe 1 away from the bumper 2. If the probe now strikes an obstacle, it moves inwards and closes a micro-switch 8, or connects contacts 11/12 (Fig. 2, not shown), to give a visual or audible warning. The operating mechanism for the probe may be housed in over-riders or in casings secured to the bumper. In a further embodiment (Fig. 2, not shown) two probes are each spring-biased to lie along the outer portions of a bumper and operation of solenoids 15 pivots the probes to an extended position. The solenoids may be arranged to both extend and retract the probe(s), which may also be actuated by any suitable electrical, pneumatic or hydraulic means.