baber/WOPTO huggingface dataset:
Patent GB-1426773-A (GB)
Title: Cyclopentane derivatives
IPC: C07B61/00
Filed: 1973-09-17
Abstract: 1426773 Cyclopentane derivatives MERCK & CO Inc 17 Sept 1973 [20 Sept 1972] 43532/73 Heading C2C The invention comprises the alkyl or aralkyl esters of (8#-acetyl-7α-carboxy-1,4-dioxaspiro- [4,4]non - 6# - yl)heptanoic acid, the alkyl or aralkyl esters of (8#-acetoxy-7α-carboxy-1,4- dioxaspiro[4,4]non - 6# - yl)heptanoic acid, the alkyl and aralkyl esters of (8#-acetoxy-7α- halocarbonyl - 1,4 - dioxaspiro[4,4]non - 6# - yl)- heptanoic acid, and the alkyl and aralkyl esters of (8# - acetoxy - 7α - (1 - midazalylcarbonyl)- 1,4 - dioxaspiro[4,4]non - 6# - yl]heptanoic acid, their preparation and the conversion of the last two named compounds into the corresponding alkyl or aralkyl esters of (8#- acetoxy - 7α - formyl - 1,4 - dioxaspiro[4,4] non - 6# - yl)heptanoic acid by treating them with reducing agents.  The following intermediates are also prepared:- 6 - (6 - carboxymethoxycarbonylhexyl) - 8 - (1,1 - dihydroxyethyl) - 1,4 - dioxaspiro[4,4]nonane - 7 - carboxylic acid γ - lactone, 6 - [6 - (1,3 - dioxolan - 2 - yl) hexyl] - 8 - (1 - hydroxyethyl) - 1,4-dioxaspiro- [4,4]nonane - 7 - carboxylic acid γ - lactone, 6 - (6 - formylhexyl) - 8 - (1 - hydroxyethyl)- 1,4 - dioxaspiro[4,4]nonane - 7 - carboxylic acid γ - lactone, 8 - (1 - hydroxyethyl) - 6 - [6- (1 - imidazolylcarbonyl)hexyl] - 1,4 - dioxaspiro- [4,4]nonane - 7 - carboxylic acid γ - lactone, 6 - (6 - carbonylhexyl) - 8 - (1 - hydroxyethyl- 1,4 - dioxaspiro[4,4]nonane - 7 - carboxylic acid γ - lactone, 6 - (6 - methoxycarbonylhexyl) - 8 - (1 - hydroxyethyl) - 1,4-dioxaspiro- [4,4]nonane - 7 - carboxylic acid γ - lactone, 5 - (1 - hydroxyethyl) - 2 - (6 - methoxycarbonylhexyl) - 3 - oxocyclopentanecarboxylic acid γ - lactone, 4 - carboxymethyl - 3 - (1 - carboxy- 7 - methoxycarbonylheptyl)- 5 - methyltetrahydrofuran - 2 - one, 6 - (1 - hydroxyethyl)- 2 - (6 - methoxycarbonylhexyl) - 3 - cyolohexene - I - carboxylic acid γ - lactone, and methyl 8,10-undecadienoate. The following process is also exemplified:-  methyl (8# - acetoxy - 7α - formyl - 1,4 - dioxaspiro[4,4]non - 6# - yl)heptanoate#methyl [8# - acetoxy - 7α - (3 - oxo - trans - 1 - octenyl)- 1,4 - dioxaspiro[4,4]non - 6# - yl]heptanoate# methyl [8# - acetoxy - 7α - (3 - hydroxy - trans- 1 - octenyl) - 1,4 - dioxaspiro[4,4]non - 6# - yl] heptanoate#methyl [8# - hydroxy - 7α - (3- hydroxy - trans - 1 - octenyl) - 1,4 - dioxaspiro- [4,4]non-6#-yl]heptanoate and racemic PGE 1 .
Patent GB-1486017-A (GB)
Title: High pile fabrics
IPC: D04B1/10
Filed: 1974-10-08
Abstract: 1486017 Knitted pile fabrics; knitting- machines B Y (SIMULATED FURS) Ltd 21 March 1975 [8 Oct 1974] 43638/74 Headings D1C and D1K Simulated fur fabric is made on a sliver weft knitting machine by securing slivers of first fibres 12 into the loops over the whole of the ground structure 10, additional slivers of second fibres 14 in spaced walewise extending panels P only and slivers of third fibres 15, additional to and contrasting in appearance with the fibres 12, 14, in walewise extending stripes S' within the panels. Either two or three carding heads are provided in advance of each feed of a circular machine to knit the fabric, in the former case both the second and third fibres being fed by the same head. Needles may be selected by having different butt and tail lengths to cooperate with cams of different thicknesses. Alternatively patterning units, comprising selector elements arranged in predetermined tricks of a rotary pattern drum to be slidable into engagement with the needle butts by a stationary cam within the drum, may be used to control the needles actually at the carding heads. Such units allow for variation in the fibre pick-up and by rearrangement of the selector elements in the tricks, may produce stripes S' which change in width and direction and merge into the panels P.
Patent GB-1099081-A (GB)
Title: Improvements in or relating to electro-magnetic contact making relays
Inventor: WOODHEAD HARRY STANLEY
IPC: H01H51/28
Filed: 1965-10-15
Abstract: 1,099,081. Magnetic contact devices. STANDARD TELEPHONES & CABLES Ltd. Oct. 15, 1965, No. 43814/65. Addition to 1,094,334. Heading H2B. Magnetic contact devices as described in the parent Specification are arranged on opposite ends of a common core so as to be magnetically in series. A flux return path may be provided by a cover or two such units may be side by side with magnetic end plates providing a series magnetic circuit energized by a coil on one or coils on both cores.
Patent GB-1132708-A (GB)
Title: Improvements in or relating to object detection systems
Inventor: CLAYSON KENNETH HUBERT
IPC: F16P3/14
Filed: 1965-10-15
Abstract: 1,132,708. Proximity detectors. WILMOTBREEDEN Ltd. 7 Oct., 1966 [15 Oct., 1965; 1 April, 1966], Nos. 43853/65 and 14596/66. Heading H3B. A capacitance type machine tool guard comprises a strip detector electrode mounted in a separately energized channel-section screen electrode to reduce the effect of capacity between the detector electrode and the machine parts. As shown, Fig. 3, a detector electrode loop 14, and surrounding screen 15 are connected by a coaxial cable to the capacitance sensing unit, the screen being energized from a tapping on supply transformer 22, and the detector electrode fed from higher voltage through a variable capacitor 27 which is adjusted so that there is no input to the amplifier 26 in the absence of a body in the guard area. The output from the sensing unit is fed to a control arrangement such as that described in Specification 1,106,456. The capacitor guard is described in association with a power-press, Figs. 1, 2 (not shown); a riveting press, Fig. 4 (not shown); a moulding machine, Fig. 6 (not shown); and associated with the guard gates of a machine tool, Figs. 9, 10 (not shown).
Patent GB-1095658-A (GB)
Title: Improvements in and relating to electrical contact brushes
Inventor: DUTFIELD WILLIAM
IPC: H01R39/36
Filed: 1964-10-28
Abstract: 1,095,658. Brushes for electrical machines; couplings. LE CARBONE (HOLDINGS) Ltd. Oct. 28, 1965 [Oct. 28, 1964], No. 44028/64. Headings H2A and H2E. A carbon electrical contact brush 1, e.g. for commutator and slip ring machines, has no current carrying flexible but a high electrical conductivity length 2 of metal extending transversely in the brush top and making a low electrical resistance connection therewith, at least a portion of the length having an exposed upwardly facing surface for receiving a pressure finger through which electrical current may flow to and from the brush, and a lower part of at least a portion of the length being embedded in and laterally enclosed by the carbon. The length may be a cylindrical riveted Cu or Ag rod, tube, plate or strip, or a nut and bolt sealed by burning; or it may be a less conductive material plated with Cu or Ag and a resin/electrically conductive metal dispersion may be provided between the length 2 and carbon 1. The carbon surfaces engaged by the length may also be plated.
Patent GB-1444497-A (GB)
Title: Apparatus for making a thread join in an open-end spinning apparatus
IPC: D01H4/00
Filed: 1974-10-14
Abstract: 1444497 Joining thread in open end spinning SCHUBERT & SALZER MASCHlNENFABRIK AG 14 Oct 1974 [13 Oct 1973] 44367/74 Headings DID and D1F An apparatus for making a thread join in an open-end spinning machine with a spinning chamber and a bobbin winding device has a bobbin supporting element 42 to lift the bobbin 14 from its winding roller 13, and a thread retaining member 56 to hold a length of thread to be sucked back into the spinning chamber, resilient force storing devices 43 and (58) (not shown) being provided for retracting these members and a locking device for locking these members, these parts being operable after a time delay by means of a switch which also re-initiates fiber feed. The bobbin supporting element 42, thread retaining member 56 and the switch are housed in a unit which is detachable from the spinning machine and can be located at any desired spinning station, the electrical connection being made by a plug 30 which, if rigidly attached to the unit, can be employed as a means of location. A circuit is described in association with Fig. 6, (not shown), which embodies the delay device. A further delay device may be included in the circuit to avoid initiation of spinning by inadvertant operation of the start lever 62, alternatively a strong spring may be used on this lever. Also in the circuit is a signal lamp operated by a thread tension detector 3 to indicate a spinning station requiring attention.
Patent GB-1046449-A (GB)
Title: Means for suppressing radio interference in road vehicles
Inventor: BALL ALBERT HERBERT
IPC: F02P7/02
Filed: 1962-11-24
Abstract: 1,046,449. Radio interference suppression for ignition apparatus. JOSEPH LUCAS (INDUSTRIES) Ltd. Nov. 14, 1963 [Nov. 24, 1962], No. 44524/62. Heading F1B. Means for suppressing radio interference in road vehicles comprises a substantially U- shaped conductor 5, 6, 7 having its parallel limbs 5, 6 extending parallel to the axis of the engine ignition distributer 4, the limbs each being connected directly to the engine through bolts 8 so that each limb is earthed. The bolts also secure a split sleeve 9 which holds the distributer in position. The intermediate limb of the conductor may be formed with a hole through which the distributer leads extend.
Patent GB-990572-A (GB)
Title: Improvements in or relating to temperature control systems
Inventor: SAUNDERS WALTER HENRY RICHARD
IPC: G05D23/19
Filed: 1962-11-29
Abstract: 990,572. Automatic temperature control systems. TOWNSON & MERCER Ltd. Oct. 8, 1963 [Nov.29, 1962], No. 45100/62. The temperature of a liquid-filled bath is controlled by a resistance heating element 11 connected in series ivith silicon controlled rectifiers 13,14 whose control electrodes receive a continuous signal to conduct when the temperature is below a predetermined value, the signal being derived from a conventional temperature sensing device via a valve amplifier 18 and transformer 17. The amplifier may be replaced by a bi-metal switch which serves as the temperaturesensing means, Fig. 2 (not shown). If the heater supply is D.C. a secondary circuit is provided to switch off the rectifiers 13,14 when the desired temperature is reached and the signal ceases. The rectifier arrangement described may be used with the circuits of Specifications 950,875, 953,124 and 990,571.
Patent GB-1479447-A (GB)
Title: Drill chucks
IPC: B23B31/00
Filed: 1974-09-23
Abstract: 1479447 Chucks JACOBS MFG CO Ltd 23 Sept 1974 [26 Sept 1973] 45144/73 Heading B3B A drill chuck comprises a body part 10 in which converging apertures 14 receive respective jaws 16, a nut member 18 rotatably mounted on the body part and having screwthreaded engagement with said jaws for advancing and retracting said jaws 16 to grip or loosen a drill shank, and a locking ring 42, for locking said nut member against rotation when a drill shank is gripped by said jaws by engaging an end surface of a part rotatable with said nut member. The nut member 18 carries a bevel gear element 20 for engagement by a chuck key and a cylindrical sleeve 26. The locking ring 42 has a tapered surface which engages a complementary tapered surface of the sleeve 26 to wedgingly resist rotation thereof. The locking ring 42 is screw threaded on a body part, or a body adaptor part 30, and arranged so that any tendency for the sleeve 26 to rotate to loosen the nut member 18 will tend to tighten the locking ring 42 on to the sleeve 26. Felt washers 44 prevent ingress of dirt. The chuck may be mounted on a driving spindle by means of a threaded recess, a tapered recess, or an externally threaded spigot. The locking ring prevents loosening of the chuck when used on a tool incorporating an impacting mechanism.
Patent GB-987859-A (GB)
Title: Improvements in gas blast circuit breaker
IPC: H01H33/70
Filed: 1961-12-18
Abstract: 987,859. Gas-blast switches. GENERAL ELECTRIC CO. Dec. 18, 1961 [Dec. 20, 1960], No. 45237/61. Heading H2B. A circuit-breaker has main interrupting contacts 18, 22 bridged by a resistance 70 and connected in series with isolating contacts 30, 34 which are latched in the closed position until the main contacts 18, 22 are open and then open to interrupt the residual current. The conductor 16 of the right hand insulator is hollow and forms an exhaust passage for the nozzle fixed contact 18 within the gas filled container 11. When the valve 66, Fig. 1, is operated to connect the pipe 65 to the atmosphere, chambers 48 and 56 formed between contacts 22, 34 and a fixed body 40 are exhausted and the contacts are urged inward against their bias springs 60, 62. A spring- biased latch arm, 83 holds a roller 86, on its end, against the contact 34 so that contacts 30, 34 are held closed until contact 22 reaches the open position when a cam extension 89 of the contact 22 engages a roller 88 on the arm 83 to move it out of the path of the contact 34. When the contact 34 reaches the fully open position (Fig. 3, not shown) a restricted passage 75 therein connects with a pipe 81 to allow pressure gas to flow from the container 11 to the chamber 48 so as to reclose the main contacts 22, 18. A sealing ring 80 prevents the pressure gas from entry into chamber 56 so that contacts 30, 34 remain open until the valve 66 is restored to the Fig. 1 position. A metering pin 90 mounted on the contact 34 controls the gas flow in the tube 81 when the contact 34 is in the fully open position.
Patent GB-1498791-A (GB)
Title: Apparatus for measuring hydrogen ion activity
IPC: G01N27/416
Filed: 1974-12-27
Abstract: 1498791 pH measurement R B W LOWNDES 27 Dec 1974 [27 Sept 1973] 45260/73 Heading G1N The hydrogen ion activity of a sample under test may be measured by apparatus comprising a brass electrode and a zinc electrode in spaced apart relationship on a tapering portion of an electrically non-conductive hollow support, the electrodes being electrically connected to voltage sensitive means constructed to display hydrogen ion activity, said means being housed in a substantially cylindrical portion of the support which is aligned with the tapered portion.  As described, electrodes 17, 18 may be mounted within recesses in a conical part 10B of the non- conducting support 10. The electrodes 17, 18 may, alternatively, be connected to form a single electrode, the second electrode then comprising a nosepiece 16. The apparatus may be used to measure pH of soils, slurries or pastes. It may also be used as a cervical probe to analyze, in terms of pH, the likelihood of carcinoma of the cervix.
Patent GB-1282313-A (GB)
Title: Respirator device
Inventor: BEAUMONT GEORGES
IPC: A61M16/00
Filed: 1969-09-16
Abstract: 1282313 Respirator control apparatus G BEAUMONT 16 Sept 1969 [16 Sept 1968] 45524/69 Heading A5T [Also in Division F1] A cyclically-operating respirator supplies gas to an outlet conduit from a high-pressure source via a relay valve 5 and an adjustable valve 3, controlling the volume of gas supplied per cycle, and has a control circuit comprising a fluidic oscillator 18, a monostable fluidic device 17 and bistable fluidic devices 14, 15, 16, devices 14 to 18 being supplied from the high-pressure source via reducers Rf, the control circuit opening the relay valve 5 for one third of each cycle, and the respiratory frequency being determined by the frequency of oscillator 18, a timing device 2, having a chamber whose volume is adjustable by means of a movable piston 13, controlling the oscillator frequency. A fixed time-delay t controls the length of time for which the device 17 remains in its quasi-stable state. A face mask is connected to the outlet conduit via a non- return valve 6, the pressure of gas supplied to the mask being indicated on a gauge 7 on depressing a button 12. The relay-valve comprises a diaphragm acted on by gas from the bistable device 15 to open a valve comprising a piston urged to a valve-closing position by a spring.
Patent GB-1162555-A (GB)
Title: Inverter with Forced Commutation in a Bridge Connection.
IPC: H02M7/515
Filed: 1966-10-12
Abstract: 1,162,555. Inverting. LICENTIA PATENTVERWALTUNGS G.m.b.H. 12 Oct., 1966 [13 Oct., 1965], No. 45554/66. Heading H2F. A multi-phase inverter of the bridge type is characterized in that each of the two supply branches of one phase includes a thyristor 1 or 2, the forward direction of which lies in the direction of the working current, and during the interruption of the current in one branch the thyristor 1 or 2 in the other branch is turned off. Preferably, each branch comprises four thyristors connected as shown with a turn-off capacitor C and a feedback diode D. The extra thyristors cause complete decoupling of the of the branches and prevent the turn-off capacitors discharging through return-current diodes. The invention is applicable to reactive current converters.
Patent GB-987486-A (GB)
Title: Improvements relating to electrical counters
Inventor: CRAXTON ROBERT TREVOR
IPC: H03K23/00
Filed: 1962-12-03
Abstract: 987,486. Electronic counters. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 28,1964 [Dec. 3, 1962], No. 45636/62. Heading G4A. [Also in Division H3] When the operative stage of a reversible ring counter conducts it charges a capacitor to operate the adjacent stage at the next input pulse. Assuming that stage n is operative switch A is conducting. This switch may be a PNPN diode, tunnel diode, or a silicon-controlled rectifier or thyratron with the trigger or grid isolated or strapped to the cathode. Alternatively a PNP and an NPN may be arranged to act as a PNPN diode. According to whether the counter is to add or subtract so W or V is earthed. F is also earthed. With A conducting capacitor C is charged with the potentials shown. With W earthed diodes P are clamped so that the next input pulse raises the potential on B to earth to switch off A. The potential at K then rises so that at the end of the input pulse as the potential of B falls so current flows through G<SP>1</SP> to render A<SP>1</SP> conducting, capacitor C discharging in the process while C<SP>1</SP> charges. The counter may alternatively be of chain type.
Patent GB-1120037-A (GB)
Title: Improvements in fluid control devices
Inventor: CRAFT DAVID JOHN
IPC: F15C1/04
Filed: 1964-11-10
Abstract: 1,120,037. Fluid control devices. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. 4 Nov., 1965 [10 Nov., 1964], No. 45805/64. Heading G4P. [Also in Division F2] A plurality of fluid valves (see Division F2) may be connected to form either a bi-stable device (Fig. 9) or a " NOR " gate (Fig. 8). A plurality of main tubes 10, 30, 31, 32 (Fig. 8) are connected in parallel to a common input 38 open to the atmosphere and a common output 37. Pressure is applied at an input 36 to the first tube 10. When control pressure is applied to one of the tubes 33, 34 or 35, the associated tube 32, 31 or 30 respectively is opened to allow flow from the input 38 to the output 37. When there is no pressure in any of the tubes 33, 34, 35 all the tubes 30, 31, 32 are closed and the flow to the output 37 is from the input 36. In the embodiment shown in Fig. 9, fluid pressure applied to one of the tubes 53, 55, for example 53, opens the tube 47 to allow the fluid applied at input 44 to reach output channel 52. This results in pressure building up in tube 43 to close tube 46 and open tube 41. When pressure is applied to the other tube, 55, the process is reversed.
Patent GB-1372070-A (GB)
Title: Process controllers
IPC: G05B5/01
Filed: 1971-10-01
Abstract: 1372070 Automatic control BAILEY METER CO 1 Oct 1971 [1 Oct 1970] 45808/71 Heading G3R In a process control, a differential amplifier receives a reference signal from a second amplifier, and a signal according to a process variable, fed to the differential amplifier through a third amplifier having a negative feedback loop that incorporates a rate circuit, no rate action being applied to the reference signal. In an embodiment, a signal 28 representing the pressure in a pipeline, measured by a transducer, is fed via amplifier 30 to a high input impedance differential amplifier 34, which has a rate circuit R 1 , C 1 , R 2 , C 2  in its negative feedback network. The output 136 of amplifier 34 is fed to a unity gain differential amplifier 38, to be compared with a signal 40 from a reference source 16, that comprises a voltage source 22, a potentiometer 26 and an amplifier 24. The output of amplifier 38 is fed directly, or through proportional and integral amplifiers, to a transducer to adjust a valve in the pipe-line. In the rate circuit of amplifier 34, resistor R 1  may be adjustable, and resistor R 2 , which is small compared with resistor R 1  damps high frequency oscillations in the amplifier output.
Patent GB-1199626-A (GB)
Title: Improvements in or relating to a Multiported Hydraulic Distributor
Inventor: BESSON LOUIS PIERRE ALBERT
IPC: F15B13/04
Filed: 1967-10-06
Abstract: 1,199,626. Valves. L. P. A. BESSON. 6 Oct., 1967 [18 May, 1967], No. 45925/67. Heading F2V. A valve for controlling a series of motors V connected to pairs of diametrically opposed radial ports 28, 28a, has a piston 3 provided with longitudinal bores 24, 25 which are constantly in communication with pump P and reservoir R respectively, and which have ports 24a, 24b, 25a, 25b which, by vertical and rotary movement of the piston, can be registered selectively with pairs of ports 28, 28a to effect movement of a selected motor in either direction. If it is desired to use the valve with one or more single acting motors a screw is inserted in each tapped bore 23 corresponding with a single acting motor to co-operate with an abutment 22 which prevent alignment of supply port 24b with port 28.
Patent GB-1034690-A (GB)
Title: Improvements in and relating to the production of terpineols
IPC: C07C35/12
Filed: 1963-11-21
Abstract: Terpineols including g -terpineol are prepared by dissolving b -terpineol in an acidified organic solvent at a temperature up to 100 DEG  C.  The solvent may be ethanol, isopropanol, acetone, dioxan, ethyl, acetate, isopropyl ether or benzene and may be acidified by sulphuric acid, p-toluene sulphonic acid, sulphamic acid, polyphosphoric acid or boron trifluoride.
Patent GB-1419281-A (GB)
Title: Apparatus for forming side folds in tubular plastics web
IPC: B29C48/10
Filed: 1973-10-03
Abstract: 1419281 Gussetting tubular films WINDMOLLER & HOLSCHER 3 Oct 1973 [3 Oct 1972] 46276/73 Heading B5B Side-folds or gussets are formed in a flattened tubular film by means of the illustrated apparatus. The film passes through the nip 4 of nip rolls 3, 3<SP>1</SP>, is inflated by air and passed through funnel 8 to the nip 16 of a second nip roll pair 15, 15<SP>1</SP>. Gussets are formed in funnel 8 by means of side-folding plates 7 which may be adjustable to give gussets of different depths and widths. Nips 4 and 16 are at an angle to each other as viewed along line 13. This enables the folds in the original flattened web to remain as folds, folded in the same sense. However, this would mean that the film leaves the apparatus in a direction different from that at which it enters so means are provided to return the film to the original direction. These means include a non-rotating bar 21 around which the film passes, adjusting its direction as it does so. A direction-changing roll 19 may be provided so that the film passes around it during passage between nip-rolls and bar, reversing its direction. This roll 19 will be further from the axis 13 than bar 21. Preferably the distance from axis 13 to bar 21 is a quarter of the circumference of the bar. Preferably the bar 21 is aligned to bisect the angle formed by the two nip roll pairs. The angle between the nip rolls may be made adjustable by providing a drive means to move one pair relatively to the other. The drive means illustrated also alters the angle of bar 21, maintaining it at half the angle between the nip roll pairs.