baber/WOPTO huggingface dataset:
Patent GB-1397524-A (GB)
Title: Amplitude-to-frequency converter
IPC: H03B1/00
Filed: 1973-07-09
Abstract: 1397524 Pulse modulation systems TELEDYNE Inc 9 July 1973 [8 Sept 1972] 32555/73 Heading H4L In a voltage to pulse-rate converter the input signal is supplied via terminal 52 and resistor 50 to the inverting terminal 22 of a differential amplifier 20 and the output pulses, after bilateral limiting by Zener diode bridge 48, or a pair of oppositely poled diodes, are taken from terminal 29. Regenerative feedback is provided via capacitor 30 to the non-inverting input terminal 24 and negative feedback via capacitor 32 and diode 34 to the inverting terminal 22. Biasing is provided by potentiometer 40 with resistor 36 and diode 38, and potentiometer 42 with resistor 44 shunted by capacitor 46. A capacitor 54 is connected between terminal 22 and earth and the ratio of its capacitance to that of capacitor 32 preferably exceeds 1000/1. If the device is to be used as a current to pulserate converter the input resistor 50 is omitted. Initially the capacitor 54 is negatively charged and application of a positive voltage e 1  to the input terminal causes capacitor 54 to discharge as a ramp toward the voltage e 1 , Fig. 2A. Until the voltage at terminal 22 reaches zero, the output at 29, Fig. 2C, is limited and held at a positive value set by bridge 48 but when it reaches zero the output will swing abruptly (68) to a negative value. The positive feedback applies the negative-going transition 70 to terminal 24, Fig. 2B, and at the same time, diode 34 is forward-biased to transfer the charge on capacitor 32 to capacitor 54 so that the voltage at terminal 22 abruptly goes negative by an amount #e, as shown at 72, Fig. 2A. The voltage at terminal 22 then begins to ramp up again (74) as capacitor 54 starts to discharge and capacitors 30, 32, 46 start to charge and the voltage at input 24 goes positive at a faster rate than capacitor 54 discharges. This is shown by curve 76, Fig. 2B, for capacitors 30, 46 with curve 74 for capacitor 54 superimposed as a dotted line. The voltages at terminals 22, 24 decay at the two different rates until they reach approximately the same value and the output 29 of the amplifier 20 swings abruptly to a positive value as at 78, Fig. 2C. Diode 38 becomes conductive to allow current flow between terminal 29 and earth to charge capacitor 54. The voltage at terminal 24 starts to decay towards zero as at 80, Fig. 2B, and the cycle will repeat, the repetition rate being a linear function of the input voltage. To ensure that the voltage at terminal 22 starts at a negative value for the system to oscillate, a starting circuit, Fig. 3, may be provided. The emitter of transistor Q1 is connected to input 22 of amplifier 20, the collector to a negative voltage source and the base via resistor 86 to the output terminal 29. If the emitter is positive with respect to the base the transistor will conduct and the negative voltage at the collector will be applied to terminal 22 so that the system begins to oscillate. The RC filter 88, 89 is arranged to keep the transistor off once the system is operating.
Patent GB-1333394-A (GB)
Title: Cutter suction dredge
IPC: E02F3/90
Filed: 1971-07-12
Abstract: 1333394 Suction dredgers INDUSTRIEELE HANDELSCOMBINATIE HOLLAND NV 12 July 1971 [22 July 1970] 32577/71 Heading E1F In a dredger having a cutter at the lower end of a cutter and suction pipe-carrying ladder 2 pivotally mounted at the forward end of a pontoon 1 anchorable by a spud 10 vertically and rotatably mounted on the stern of the pontoon by a guide element 9 pivotally secured to the stern at 8 maintainence of the cutter in a desired operating position on the sea bed without disturbance by the movement of the hull due to wave conditions is facilitated by connecting the ladder to the spud by a parallelogram linkage 1, 4, 6, 7. The strut 4 is pivoted on the pontoon, is connected to the ladder by a strut of fixed or adjustable length and is connected by a strut or a cable 6 to either a second strut 7 secured to the guide element 9 or to the upper part of the spud. A jack can be provided for yieldingly applying a constant force 11 against the strut 7 to keep the element 6 in tension.
Patent GB-975595-A (GB)
Title: Substituted decalones and hexahydro-indanones of use as intermediates in steroid synthesis
Inventor: HUGHES GORDON ALAN
IPC: C07J75/00
Filed: 1959-09-25
Abstract: The invention comprises compounds of formula <FORM:0975595/C1/1> wherein Ar is phenyl which may carry as sole substituent in the m-position a hydroxy, alkoxy, acyloxy, amino, acylamino or alkylamino group, each R is H or alkyl, R1 is alkyl, Q is methylene or ethylene, Y is carbonyl, ketalised carbonyl, hydroxymethylene or acyloxymethylene and the junction of the rings in trans. Such compounds -and those in which more generally Ar is phenyl having an ortho-position free of substituents and Y is carbonyl or hydroxymethylene or a derivative group convertible by hydrolysis into carbonyl or hydroxymethylene-are prepared by reducing the corresponding dehydro compound <FORM:0975595/C1/2> at the ethylene linkage with introduction of the hydrogen atom shows as H trans. to R1, as e.g. by catalytic hydrogenation. The examples describe the preparation of those compounds of the first formula wherein (a) R1 is methyl, R is H, Ar is m-methoxyphenyl, Y is carbonyl or hydroxymethylene and Q is methylene or ethylene by reduction and in the case of diketones by oxidation of the ketols; (b) R1 is methyl, R is H, Ar is phenyl, Y is carbonyl or ethylenedioxymethylene and Q is ethylene by reduction. Specifications 975,591, 975,592, 975,593, 975,594 and 975,596 are referred to.
Patent GB-1359710-A (GB)
Title: Method and apparatus for recording signals
IPC: H04N9/79
Filed: 1971-07-12
Abstract: 1359710 Colour television NIHON DENSHI KK 12 July 1971 [10 July 1970] 32649/71 Heading H4F The luminance and chrominance components of a colour television signal are recorded sideby-side on a film 4 by the action of one electron beam 13 or laser beam by the use of four memories 21a, 21b, 21c, 21d, with associated write circuits 20 and read circuits 22. The luminance signal is derived from adder 19 and the quadrature-modulated chrominance signal from adder 27. The luminance signal is fed alternately to memories 21a, 21b, and the chrominance signal is fed alternately to memories 21c, 21d, a line being stored during each of these times. The memories are then read at twice the writing in speed in the order 21a, 21c, 21b, 21d, the output thus being alternately luminance and chrominance components, each line scan of beam 13 containing the luminance information from one line followed by the chrominance information from the same line. The apparatus may be extended to record chrominance, luminance and sound information side-by-side. Reference has been directed by the Comptroller to Specification 1,131,772. (For Figure see next page.)
Patent GB-444341-A (GB)
Title: Improvements in thermionic valve testing devices
IPC: G01R31/25
Filed: 1934-11-14
Abstract: 444,341. Current and pressure meters; locking switches. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and SANDERS, W., c /o General Electric Co., Ltd., Stoke, Coventry. Nov. 14, 1934, No. 32744. [Class 37] [See also Group XXXVII] A device for testing thermionic valves under working conditions comprises a base 2 carrying a milliammeter 3, a pair of push-button switches 5, 6 and a valve holder 11. The valve is removed and placed in the valve holder 11 and a plug (not shown) is inserted in place of the valve. The circuits are arranged so that by pressing the buttons 5, 6 successively, the filament and plate currents can be read on the milliammeter 3, the necessary shunts being introduced. The switches 5 and 6 are interlocked so that only one can be operated at a time. The stem of each switch is formed with a frusto-conical collar 8 which, when depressed, engages a bevelled surface of a member 9 pivoted at 10 and moves it into the path of movement of the collar on the other switch preventing it from being depressed.
Patent GB-612825-A (GB)
Title: Oil cooler
IPC: F01P11/08
Filed: 1945-12-04
Abstract: 612,825. Cooling radiators for aircraft. GARRETT CORPORATION. Dec. 4, 1945, No. 32799. Convention date, Dec. 13, 1944. [Class 64(iiil] In an oil cooler of the type used in aircraft which is fitted with a jacket to provide for thawing out should the oil become congealed, the jacket extends only partially around the shell of the cooler and communicates with a narrow by-pass provided from the cooler inlet to the cooler outlet. One side of the main oil channel within the cooler is in heatexchange relation with the jacket to allow the creation of an initial flow path in the main oil channel within the cooler, which is progressively deepened and opened up by the sluicing action of the hot oil on the congealed oil. The resistance of a spring- loaded valve in the by-pass induces flow of the hot oil in the initial flow path within the main channel A tubular shell 11, Figs. 2 and 3, contain a radiator core 12 and has a fitting 13 incorporating an inlet 14 and outlet 16 extending longitudinally on the top. The core 12 comprises bundles of tubes 22 separated by corrugated baffles 23, 24, 25, 26, 27 and 28 each provided with apertures 33 and 34 separated by webs 35 located at opposite ends of adjacent baffles, so that oil follows the tortuous path 43. The fitting 13 is attached to a fitting 44 which is welded to the shell 11 and a sheet metal jacket 17 defines an inlet passage 48 extending from the port 49 to the inlet port 18 in the shell 11. The main portion 52 of the by-pass chamber which extends the full length of the oil circulation spaces is formed between the arm 51, shell 11 and the fitting 44, and is continued through a port 53 into chamber 54 and then through port 56 into outlet chamber 57. A spring-loaded valve 59 in port 58 is between port 53 and chamber 54. An outlet channel 19 is welded to the shell and to fitting 44 to provide an outlet. The baffles 23-28 (Fig. 3), are more closely spaced in the centre and progressively widen outwards and are arranged so that their upper edges are included in the area covered by the by-pass. Bleed ports 66, 67, 68, 69, 70 and 71, (Fig. 1), are arranged in a line extending from within the by-pass to a point near the inlet port 18 and a port may be incorporated in the shell 11 communicating with the outlet passage to provide a direct outlet from the upper extremity of compartment 42 into outlet chamber 57. Baffles 79 and 81 divert bypass flow into the dead end warming pocket 65 and hot oil successively opens the bleed ports 67-71 and oil circulation is started. Spacing strips may be used to separate the hexagonal tube ends from the baffles and spacing rings 31c and short semi-hexagonal filler plugs also incorporated to provide enlarged flow spaces. In a modification, Fig. 7, the baffles 23a-28a are arranged symmetrically about the vertical axial plane of the cooler, the by-pass area is restricted to the area of the fitting 44 and the upper extremities of the flow compartments are narrowed by offsetting the outer pairs of baffles and widening the corresponding compartments in their lower regions.
Patent GB-936147-A (GB)
Title: Improvements in or relating to a process and apparatus for coating articles
IPC: B05D1/18
Filed: 1959-09-28
Abstract: An article, e.g. a glass bottle, is coated by <PICT:0936147/III/1> <PICT:0936147/III/2> pre-heating it and immersing it in a bath of a liquid which sets or solidifies at a temperature higher than that of the bath, the temperature to which the article is pre-heated being such that on leaving the bath after a period of immersion sufficient to provide the desired thickness of coating, the article is still at a temperature higher than the setting temperature, and at least sufficient to cause the outer surface of the coating to set or solidify.  The coated article may then be baked.  The coating material may be a paste containing polyvinyl chloride and one or more plasticizers.  The bath may be insulated from earth and charged to a high electrical potential to improve drainage of liquid as the article is withdrawn.  In coating bottles, these may be given a small vertical reciprocatory motion at the end of the immersion stage, to build up a thicker coating around the mouth. As shown, bottles 1 are carried by intermittently-moved chain conveyers 4 through a pre-heating furnace 14, and are then dipped in the coating material by raising the tank 20, which is provided with a liquid feed and overflow device.  By means of a cam system (not shown), the tank is given a small movement to the left before being raised, and acts through suitable connections to tilt the bottle as it enters the bath, and also given a small vertical reciprocatory movement towards the end of the dipping step.  The tank 20 is insulated and electrically charged.  After removal from the liquid, the coated bottles then pass through a baking oven 23 and are cooled by air supplied through nozzles 24.  Work-holders.  The bottles 1 are mounted on rods 2 to which L-shaped levers 8, 9 are pivoted at 7. The arms 8 are acted upon by a spring 5, and this urges apart the arms 9, which have bottle-engaging bosses 10.  The bottles are released by members 12, carried by a beam 13, being lowered to bear against the arms 8.
Patent GB-413185-A (GB)
Title: Improvements in or relating to the treatment of rubber latex
IPC: C08C1/08
Filed: 1933-11-24
Abstract: In the process of creaming fresh latex, a small quantity of a water soluble soap up to 0,5 per cent is added in addition to the usual creaming agent, to accelerate the creaming process.  The invention comprises broadly the use of any ammonium, sodium or potassium salt of a fatty acid, saturated or unsaturated, and having a chain of from 5 to 24 carbon atoms, or of sulphonated derivatives of such acids. The preferred types of soap are ammonium or potassium soaps of fatty acids.  Specified soaps are: the potassium soaps of coconut oil acids, and of sulphonated undecylenic acid, ammonium laurate, potassium or ammonium stearate, sodium, ammonium or potassium oleate.
Patent GB-1464602-A (GB)
Title: Apparatus for the manufacture of pneumatic tyres
IPC: B29D30/58
Filed: 1974-07-26
Abstract: 1464602 Tyre making apparatus; elevated railways CONTINENTAL GUMMI-WERKE AG 26 July 1974 [29 Sept 1973] 33119/74 Headings B7C and B7L Pneumatic tyre making apparatus comprises one or more construction drums 3, 4 for the manufacture of individual tyre components, an assembly drum 5 for use in assembling together tyre components, and a transfer device for transferring a tyre component or components from the construction drum or drums to the assembly drum, the transfer device including an elongate support member 11, an elongate guide member 12 supported on the member 11 by fasteners adjustable to vary the relative position of the members 11, 12 and located at spaced intervals over the length of the members 11, 12, and movable conveyers 13, 14 supported and guided by the member 12. In use the adjustable fasteners enable local adjustment of the position of the guide member 12 such that the axis of an annular tyre component carried by a conveyer is coaxial with the axis of whichever drum the component surrounds. In this way misalignments between the drums due to distortions of the apparatus in use can be compensated. In the illustrated embodiment the guide member 12 is supported above a flange of the support member 11 by means of bolts 16 and nuts 17. The member 12 may alternatively be arranged below the member 11 and may be secured to the member 11 by set-screws. Each conveyer :13, 14 has a slide bush 18 engaging the member 12.
Patent GB-839571-A (GB)
Title: Improvements in and relating to electrical commutators
IPC: H01R39/32
Filed: 1956-10-31
Abstract: 839,571. Brazing;making dynamo-electric machines. GENERAL ELECTRIC CO. Oct. 31, 1956 [Oct. 31, 1955], No. 33244/56. Classes 83 (2) and 83 (4). [Also in Group XXXV] The active surface of a commutator is increased by brazing the leads 4 directly into slots 8 cut in the ends of the segments 6. A brazing compound 10, preferably largely copper, and including silver and phosphorus, is inserted into the slots with the leads, and heat is applied by passing current between electrodes 12, 13 placed on the segment and top lead respectively. A slot 11 prevents the current passing along the surface. The surface is skimmed to allow its whole length to be used as brush track.
Patent GB-1088968-A (GB)
Title: Crystal controlled oscillator
IPC: H03K3/283
Filed: 1966-07-25
Abstract: 1,088,968. Transistor oscillators. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 25, 1966 [Oct. 21, 1965], No. 33320/66. Heading H3T. In a crystal controlled transistor oscillator, the crystal 20 is connected in series with a capacitor 22 between the collector and base electrodes, and the output is taken from the junction between the crystal and capacitor. Capacitors 18, 24 which are large compared with the inter-electrode capacitances are provided to stabilize the frequency. The output is fed to a second stage 30 which is overdriven to provide a square-wave output.
Patent GB-915591-A (GB)
Title: Fluid flow control
IPC: F23D11/26
Filed: 1960-09-28
Abstract: 915,591. Supplying liquid fuel to burners. PARKER - HANNIFIN CORPORATION. Sept. 28, 1960 [Oct. 2, 1959], No. 33331/60. Class 75 (1). [Also in Groups XXVI and XXIX] A fluid flow control valve which may be used as a fuel injector or a fuel flow divider in a gas turbine plant comprises a housing 11, Fig. 1, divided by a piston member 23 into an inlet chamber 30 and an outlet chamber 32. A valve closure member 21 is secured to the piston and loaded by a spring 17 into the closed position. The piston member is provided with passages 34 connecting the inlet and outlet chambers. The piston member may be formed with a second piston part having through passages 31 to a buffer chamber 28 to prevent chattering. When the fuel pressure in chamber 32 acting on the valve closure is sufficient to overcome the spring loading, the valve opens and continues to open to provide an increased rate of flow per increase of pressure. In the first range of opening, the passages 53 maintain equal pressures in the inlet and outlet chambers. At a certain flow rate, increase in the inlet pressure provides a pressure drop across the piston 23 and this pressure drop opens the valve at an increased rate to provide substantially increased flow per unit pressure increase. As shown, the valve controls one passage of a dual orifice duplex fuel injection nozzle, opening at a predetermined pressure to provide the supply to the second nozzle. In Fig. 4 the valve forms a fuel injector. The piston member 72 is provided with the through passages 84 and helical slots 85 to provide swirl. A chamber 89 houses the spring loading and also forms the buffer chamber. Specifications 870,896 and 915,592 are referred to.
Patent GB-1342665-A (GB)
Title: Textile machines
IPC: D04B27/00
Filed: 1971-07-15
Abstract: 1342665 Knitting-machines JONATHAN LOGAN Inc 15 July 1971 [17 July 1970] 33355/71 Heading D1C A device for evening the tension at which yarns are supplied to a knitting machine from uneven packages comprises a disc-type tensioner 26 and an overdriven roller 34 around which the yarns are wrapped a plurality of tines. The yarns are subjected to a similar second stage treatment by tensioner 38 and roller 36. A roller 28 oils the yarn prior to treatment, while a second roller 40 oils the yarn for knitting. The apparatus is mounted on a free-standing creel, from which the yarn is withdrawn by a tape and cylinder drive on the machine. If the machine drive is stopped due to a fault the threads are disengaged from the rollers by rods 54, 56.
Patent GB-1524233-A (GB)
Title: Recovery of sulphur values from sulphuric-acid-containing aqueous liquid
IPC: C01B17/05
Filed: 1975-08-11
Abstract: 1524233 Recovering sulphur values from aqueous effluents INSTITUT FRANCAIS DU PETROLE 11 Aug 1975 [14 Aug 1974 6 March 1975] 33396/75 Headings C1A and C1C Sulphur values are recovered from an aqueous effluent containing sulphuric acid and, optionally, heavy metal ions by: (a) reacting the effluent with an aqueous solution containing ammonium sulphite and/or ammonium bisulphite, separating from the solution the sulphur dioxide formed and, then optionally, treating the solution with hydrogen sulphide and/or ammonia to precipitate a sulphide and/or a hydroxide of the heavy metal which is separated; (b) reacting calcium oxide with the solution contained in step (a) to precipitate the sulphate ions thereof in the form of calcium sulphate and to form an aqueous ammoniacontaining solution; (c) vaporizing ammonia from the aqueous solution formed in step (b); (d) reducing the calcium sulphate formed in step (b) with carbon or hydrocarbon so as to form calcium oxide and a sulphur dioxide-containing gas; (e) contacting the ammonia from step (c) with the sulphur-containing gas from step (d) and with water, to form an aqueous solution containing ammonium sulphite and/or ammonium bisulphite; (f) recycling to step (a) at least a portion of the aqueous solution formed in step (e); and (g) recycling to step (b) at least a portion of the calcium oxide formed in step (d). The sulphur dioxide obtained in the process may be converted to sulphur trioxide or elemental sulphur.
Patent GB-1436463-A (GB)
Title: Breathing apparatus
IPC: A62B7/04
Filed: 1973-07-13
Abstract: 1436463 Valve BENDIX CORP 13 July 1973 33499/73 Heading F2V [Also in Divisions A5 G5 F1 and G3] A closed circuit breathing apparatus has a pump 94 comprising adjacent chambers 92, 100 separated by a movable wall 102 which when deflected varies the volume of a flexible reservoir 118. Pressurized oxygen is supplied to the ports 134, 138 of the two pump chambers the former having a restriction 136. The pump chamber 92 is connected via a valve 52 of a demand sensing regulator 30 to a mixing chamber 62 which is connected to a face mask 14 via filters 302, 304; a heat exchanger 303, relief valve 24 and a check valve 18. Exhaled gas leaves the face mask through a check valve 22 which is pneumatically connected to the flexible reservoir 118. Pressurized oxygen stored in a vessel 12 and released by a control valve 186 to a low pressure warning unit 174 (see Division G5) and a pressure reducer 144 from which a conduit 86 connects with the pump chambers 92, 100. In use stored oxygen is released to the apparatus by rotation of a variable position knob 260 allowing outward movement of the seat 242 and valve stem 248 by a spring 258. Oxygen thus enters the valve chambers 184, 234 leaving the former via conduits 182 and 190 for the pressure reducer and low pressure warning unit. Further rotation of the positioning knob allows the spring 258 to bring the valve face 252 on to its seat and enclose in the chamber 234 sufficient oxygen for purging which is released by final rotation of the knob allowing the seat 242 to move away from the valve face 256. From the pressure reducer oxygen fills through the pump chambers to the inlet port 56 of the regulator 30. Inhalation at the mask is transmitted via conduit 32 and sensed as reduced pressure by the regulator diaphragm 38 which is deflected to open the valve 52 allowing oxygen to flow to the mixing chamber 62 and due to the restricted inlet at the port 134 pressure is unbalanced across the wall 102 which is deflected towards the chamber 92 displacing the reservoir gas contents to the mixing chamber and thence to the mask. Exhalation closes the check valve 18, opens the check valve 22 and causes gas flow through the conduit 20 to the reservoir at the port 128. With pressure now balanced across the wall 102, the reservoir expands under the action of a spring 114. An emergency valve 70 in the regulator receives oxygen via the conduit 90 and opens to supply directly to the mask if the diaphragm 38 deflects excessively in response to demand. A pressure gauge 245 indicates storage vessel pressure. The storage vessel is fitted with a filling non-return valve 292 and a cap 274.