baber/WOPTO huggingface dataset:
Patent GB-1399425-A (GB)
Title: Fluid level gauge
IPC: G01F23/60
Filed: 1973-01-25
Abstract: 1399425 Electro-physical measurement - liquid level VAPOR CORP 25 Jan 1973 [12 May 1972] 3881/73 Heading GIN [Also in Division H3]  A capacitance type liquid level gauge forms part of a differentiating circuit and is energized with a stable triangular voltage whereby the output comprises rectangular D.C. pulses of an amplitude proportional to the capacitance (i.e. liquid level.)  The CIRCUIT arrangement Fig. 4 comprises an oscillator section 58 formed by an I.C. 64 connected as a bi-stable switch, in circuit with and triggered by an integrator 70. The amplitude of the signal is stablilized by Zener diodes clamping the output of the bi-stable element. Temperature compensation may be provided by resistor 76. The triangular wave output from the oscillator is applied to capacitor gauge 18 which acts as a differentiator to produce rectangular pulses, (amplified by I.C. 86), of an amplitude proportional to its capacity. These pulses are applied to an ABSOLUTE VALUE (rectifier) AMPLIFIER, formed by I.Cs 96, 98. I.C. 96 inverts positive pulses and applies them through diode 110 to I.C. 98; negative input pulses are applied directly through resistors 104, 106, 108 to I.C. 98, while the output of I.C. 96 is clamped by diode 112.  The resulting D.C. signal is applied through a smoothing and filtering amplifier 134, 140 to an indicator 43. PROBE CONSTRUCTION' A concentric tubular capacitor with plug in sections to extend its length is illustrated in Figs. 1 and 2 (not shown) and a simple rod type in Fig. 3. The circuit of Fig. 4 may be arranged as a printed circuit in the probe head. The probe may be fixed in a tank or grain silo or may be portable.
Patent GB-724936-A (GB)
Title: Improvements relating to piston rings
IPC: F16J9/06
Filed: 1953-02-12
Abstract: 724,936. Piston packing. DAIMLER-BENZ AKT.-GES. Feb. 12, 1953 [Feb. 12, 1952], No. 3994/53. Class 122 (1). A piston-ring 15, particularly an oil-scraper ring for an internal-combustion engine, is made of spherulitic- or malleable-cast-iron which has a lower coefficient of thermal expansion than an expander-ring 16, of aluminium alloy or magnesium alloy, which may be connected to the ring 15 as by soldering or be separate. Examples of pressures between the ring and the wall of the cylinder are given. Both rings may be of rectangular cross-section.
Patent GB-122315-A (GB)
Title: Improvements in or relating to Internal Combustion Engines.
Inventor: COX KENNETH
IPC: F01L1/12
Filed: 1918-03-07
Abstract: 122,315. Cox, K. March 7, 1918. Addition to 23818/13. Valve-gear.-The engine described in the parent Specification is modified by replacing the twin coaxial cylinders with a single double-acting cylinder. The inlet and exhaust valves 5, 6 in the upper end of the cylinder 1 and the horizontal iulet and exhaust valves 3, 4 in the lower end are actuated from a single cam-shaft 7.
Patent GB-273989-A (GB)
Title: Improvements in and relating to the manufacture of artificial stone
IPC: C04B9/11
Filed: 1927-02-14
Abstract: 273,989. Abrey, R. H. Feb. 14, 1927. Plastic compositions containing oxychlorides.- Raw or calcined magnesite is heated with a fluxing material such as sodium silicate or borax and the resulting clinker is ground and mixed with a solution of magnesium chloride. Aluminium and barium chlorides may also be added as well as waterproofing material such as rosin soap, aluminium, zinc, magnesium or other insoluble stearate, or greasy or fatty material. Alumina and barium carbonate and colouring materials may be added to the magnesite before burning. Fibrous materials, such as asbestos and wood pulp, silica, mica crushed pottery, coke, sand may be employed as filling materials. In moulding, glazed surfaces may be produced by the employment of polished mould surfaces. Wall tiles, panels, table tops, floorings, lavatory fittings, and wash basins may thus be produced.
Patent GB-347768-A (GB)
Title: Improvements in internal-combustion engines, and in powertransmission systems for use in conjunction with such engines
IPC: F02B75/28
Filed: 1930-02-07
Abstract: 347,768. Driving-gear. ARIEL WORKS, Ltd., SANGSTER, J. Y., and TURNER, E., Dale Road, Selly Oak, Birmingham. Feb. 7, 1930, No. 4140. [Class 7 (ii).] The four cylinders a<1>, a<2>, b<1>, b<2> of an engine are arranged in parallel pairs and drive two parallel crank shafts a<3>, b<3> which are coupled by gear wheels 1, 1a, 2, 2a, that serve as the crank throws. The outer sides of the gear wheels carry crank pins a<6>, b<6>, upon which the big ends a<7>, a<8> are supported. The crank pin of one gear wheel drives a flywheel disc e, the shaft e<1> of which is used as the drive of a transmission system. Flywheels f, g can be placed on the crank-shafts a<3>, b<3>, and a gear wheel h drives as a half-time pinion for the engine drive. In modifications only one shaft-coupling gear is used, or the four discs are used as crank throws and the gearing together is effected by providing each shaft with a double disc crank and using the outer discs as shaft-coupling gears. Specification 330,231, [Class 7 (ii), Internal-combustion engines, Arrangement &c. of], is referred to.
Patent GB-271782-A (GB)
Title: Improvements in weighing scales
IPC: G01G23/00
Filed: 1927-02-14
Abstract: 271,782. Hamblin, F. B. Feb. 14,1927. Indicating, optical devices for; index hands and pointers. - A weighting-scale comprises a screen divided into three zones, one zone to receive a projected image of the weight graduations and the other two zones being distinctly marked, for example by vari-coloured glass, to form over and under weight zones within which indications are displayed by devices co-ordinated with the weight graduations. Means are provided for limiting the extent of movement of the weighing mechanism. The scale beam 2 Fig. 1, is coupled as usual to a pendulum lever 7 carrying an adjustable chart 12, the weight graduations on which are projected by a known lens system on to a ground glass screen, Fig. 2. Two distinctive zones 29, 30 of vari-coloured glass, for over and under weight respectively are provided adjacent the image-receiving zone 28. An adjustable indicating pointer 33 carrying two discs 34, 35 is secured behind the screen. The chart 12 is provided, at predetermined points, with apertures 37, 38, Fig. 4, through which beams of light pass and are projected on to the screen. These beams are masked by the discs 34, 35 when a certain predetermined weight is on the scale, but over or under this weight the beams throw a ray over or under the discs 34, 35 and illuminate a portion of the overweight or underweight zone. The movement of the weighing mechanism may be limited by means of adjustable screw stops 19, 23, Fig. 1, arranged to engage an abutment 22 on the scale beam.
Patent GB-717257-A (GB)
Title: Improvements relating to ventilation devices or louvres
IPC: F24F13/065
Filed: 1952-02-16
Abstract: 717,257. Ventilators. SCOTTISH ALUMINIUM WARE, Ltd., CLEIFF, J., and GALBRAITH, A. Feb. 16, 1953 [Feb. 16, 1952], No. 4176/52. Class 137 A ventilator of the ball and socket type particularly adapted to resist the effects of vibrations which occur, e:g: in aircraft and tanks, and comprising: an inner ball member 9 universally mounted in a part spherical socket member 8, is characterized in that the socket 8 is formed of two parts 8a, 8b, which are resiliently urged together to positively grip the ball 9 and maintain it locked in its adjusted position. Flanges 13a, 13b on the parts 8a, 8b are joined together by sleeves 15, springs 17 being located between the rear face of the flange 13b and thrust nuts 16 screwed onto the ends of the sleeves 15. A felt lining 14 is provided between the flanges 13a, 13b and between the ball 9 and socket 8. An air passage through the ball 9 has baffles 18 at one end and at the other end a diffuser 10 which comprises a series of diverging cones 11 mounted on a spider 12 and located within the bounding surface of the socket 8, the ball 9 being rotatable through 180 degrees to deliver either a diffused, or a uni-directional, supply of air. In a modification, the area of the air passage in the ball 9 increases as it approaches the diffuser 10, and in order that the supply of air can be completely cut off when the ball 9 is turned from a fully open position; see Fig, 3, to a position at right angles thereto, the lower part of the component 8b of the socket is provided with an extension to cover the small air passages which would otherwise exist. It is arranged that the ball is in its " cut off " position when the outer rim of the inner cone 11 is moved to correspond with a half circular cut out part on a lip depending from the front of the component 8a. In a further modification the flanges 8a, 8b are rigidly connected together, slots being provided in the socket component 8b which is urged to contract round the ball 9 by means e.g. of a spring coil.
Patent GB-1457095-A (GB)
Title: Process for printing or pad-dyeing cellulose/polyester mixed fabrics
IPC: D06P3/872
Filed: 1975-01-31
Abstract: 1457095 Dyeing polyester/cellulose blends HOECHST AG 31 Jan 1975 [2 Feb 1974] 4288/75 Heading DIB Blends of polyester and cellulose fibres are pad-dyed or printed by padding or printing with a padding liquor or print paste containing a reactive dye, a disperse dye an alkali metal salt of formic acid, and a printing or dyeing auxiliary, carrier, levelling agent and/or dispersing agent and subsequently fixing by a dry heat or steam heating process. Sodium formate is preferably used in amounts of 5 to 50gms per kilogram of paste or liquor, preferably the material is dried at below 100C before dyestuff fixation and may be overprinted.
Patent GB-749369-A (GB)
Title: Improvements in gear change arrangements for motor vehicles
IPC: F16H61/34
Filed: 1953-02-16
Abstract: 749,369. Controlling change-speed gear. MASCHINENFABRIK A U G S B U R GNURNBERG AKT.-GES. Feb. 16, 1953 [Feb. 14, 1952; Feb. 23, 1952], No. 4294/53. Class 80(2) A control device mounted on the steering column 1, Figs. 1, 2 of a motor vehicle, for a six-forward speed and reverse change-speed gear, comprises a handle 9, 10 which is rotated on its own axis to move a rod 6 axially through rack-and-pinion gearing 7, 8 and thus, e.g., through links, &c., 30, 34, 36-40 rotate a shift-lever 45, Fig. 7, to engage in one or other of shiftrails 58-61, Fig. 6, and is pivoted in a plane parallel to that containing the steering wheel to rotate the rod 6 about its own axis and, through links 14, 57, 55, 50, 49, slide the shift lever 45 to establish the selected speed. The link 30, Fig. 1, is connected to the rod 6 by means which allow the latter to rotate freely with respect thereto but transmit the axial movement, and similarly the. link 14 is connected to the rod 6 by means which transmit the rotary motion of the latter but allow it to move axially. The shift lever 45, Fig. 7, is mounted on a hollow shaft 41 which can be slidden axially relatively to a shaft 40 by the link 50 which is pivoted to a fixed support 51. The shaft 40 is rotated by the link 38. In a modification, a bevel gear 77 and rack 74, Figs. 8, 9, transmit rotational and axial movement of a rod 71, equivalent to the rod 6, to gears 78, 79 connected through cardan joints 80a, 81a, shafts 80, 81, and cardan joints 80b, 81b, Figs. 10, 11, to gears 85, 91, which mesh a gear 86 on a shaft 87 for rotation thereof, and a rack 89 for axial movement of the shaft. Axial movement of the shaft 87 moves a shift lever 88 to select one of a series of selector rails 84, and rotation of the shaft 87 establishes the selected speed. The shaft 87 is biased by a spring 94 in such a direction as to select the highest speed and the gear 91 is engaged by a spring stop 93 to hold it at a point corresponding to the selected speed.
Patent GB-702066-A (GB)
Title: Improvements in or relating to electric connectors provided with cord gripping means
IPC: H01R33/46
Filed: 1951-02-22
Abstract: 702,066. Strain-taking devices for flexible leads. GENERAL ELECTRIC CO., Ltd., and COLEMAN, A. S. Feb. 20, 1952 [Feb. 22, 1951], No. 4345/51. Class 38 (1) A cord grip for, e.g. lamp holder, comprises clamping and locating washers 7, 8, respectively, between which the leads are bent and gripped. To assemble the lampholder the leads 4 are passed through an end ring 5 and through an aperture 11 in the washer 7 and then connected to terminals (not shown) in the insert 3. The leads fit into notches 18 in the washer 8 spaced further apart than the terminals, and the washer is placed adjacent the insert 3. A clamping ring 6 fitting over the outer casing 2 is then screwed over the ring 5, the two washers thus gripping the leads between them. Projections 14 on the end ring 5 enter notches 17 in the washer 7 and grooves 15 in the insert 3, thus preventing relative rotation between these three members.
Patent GB-574058-A (GB)
Title: Improvements in and relating to the separation of butadiene from gaseous mixtures
IPC: C07C7/11
Filed: 1943-03-17
Abstract: Butadiene is separated from gaseous mixtures particularly with other C4 hydrocarbons by treatment in the gaseous phase with selective solvents which contain two identical hydroxyl, halogen or phenyl groups selected from the following: dihydroxyl, dihalogen, and diphenyl compounds in which the substituent groups are separated by 3, 4 or 5 methylene groups, diethylene glycol, and b ,b -dichlordiethyl ether.  Tri, tetra-, and penta-methylene glycols, trimethylene bromide, 1, 4-dichlorbutane, 1, 5-difluorpentane, 1,3-diphenyl-propane, 1,4-diphenyl-butane, and 1,5-diphenyl-pentane are solvents specified.  Absorption may be effected at ordinary or increased pressure, usually at - 5 to 40 DEG  C.  Solid compounds may be used in combination with a solvent.  A gaseous mixture of butanes and butadiene may be passed up a packed tower against a descending stream of solvent at about 20 DEG  C., rich solvent accumulating at the base.  The butadiene may be recovered as by heating at ordinary pressure.  Figures are given showing the increase in butadiene content when a gas mixture is contacted with diethylene glycol at 20 DEG  C. and trimethylene glycol at 0 DEG  C. Specification 319,025, [Class 2 (iii)], and U.S.A.  Specifications 1,882,978 and 2,069,172 are referred to.
Patent GB-682408-A (GB)
Title: Improvements in or relating to power plant
Inventor: BAILEY RICHARD WILLIAM
IPC: F01K23/14
Filed: 1950-02-21
Abstract: 682,408. Motor power plant. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Jan. 23. 1951 [Feb. 21, 1950], No. 4482/50. Class 110(iii) [Also in Group XXXIII] In a power plant wherein one or more I.C. engines are provided for supplementing the power delivered to a propeller shaft by one or more steam or gas turbines coupled to the shaft through pinion and gear wheel reduction gearing, the I.C. engine is coupled to the pinion through step up gearing. The propeller shaft 1 is coupled through reduction gearing comprising the gear wheel 2 and the pinions 3 and 4 with the shafts 5 and 6 of steam or gas turbines (not shown). An I.C. engine is also coupled with the pinion 3 through step-up gearing 8, 9 and an isolating coupling 10. Either the driving or driven components 8, 9 of the step-up gear, or both, may be adapted to contribute a flywheel effect in excess of that which would normally result with gearing of the proportions required to transmit the power of the I.C. engine. If desired, an additional flywheel 11 may be mounted on the driven shaft of the step-up gear. An additional I.C. engine 7<SP>1</SP> may also be coupled to the pinion 4 through step-up gearing 81, 91 and a coupling 10<SP>1</SP> The step-up gear is located at the end of the I.C. engine remote from the reduction gear so as to provide along coupling shaft 12 which gives torsional flexibility to the drive. The coupling 10 may be of the hydraulic, electromagnetic or slippable friction type and may be arranged adjacent either end of the coupling shaft. In a modification the coupling 10 is located at the side of the step-up gear removed from the reduction gear and the coupling shaft 12 passes through a bore in the driven gear 9. A clutch may be arranged in the shaft 12 to facilitate engagement or disengagement of the drive from the engine 7. Specification 682.396 is referred to.
Patent GB-470473-A (GB)
Title: Improvements relating to exhaust silencers for engines
IPC: F01N13/04
Filed: 1936-02-14
Abstract: 470,473. Exhaust-silencers; aircraft. BLANCHARD, J. G. Feb. 14, 1936, No. 4512. [Class 7 (ii)] [Also in Group XXXIII] Exhaust-silencers for aircraft and other engines comprise a number of silencing-units connected in parallel to a common inlet and a common outlet, and disposed within a casing, preferably a substantially streamlined part of an aircraft. Figs. 1 and 2 show a series of silencing-units 6 arranged in a casing 7 within the streamlined engine nacelle 2 mounted on wings 25. A similar casing is provided at the opposite side of the nacelle, the exhaust being led from an annular manifold 3 by conduits 15 to headers 16 at the inlet ends of the silencing-units. The exhaust enters the units through apertures 13 in the end wall 8 of the casing 7, and flows out through similar apertures in the opposite end wall 9 into headers 19 connected by conduits 20 to a common exit pipe 5. The cooling-air which passes over the engine enters pipes 23 which run along the wings and are open to the nacelle, and escapes at 24. The silencing-units may be constructed, as described in Specification 448,878, of a series of Venturi members 11, 12 arranged in cylindrical casings 10 apertured at 17. The units may be housed in the lower part of the nacelle, or may be arranged with their axes more or less vertical. Specification 137,082, [Class 4], also is referred to.
Patent GB-1042479-A (GB)
Title: Photographic development processes
Inventor: MASON LESLIE FREDERICK ALFRED
IPC: G03C5/30
Filed: 1964-02-03
Abstract: 1,042,479. Developing photographic silver halide material. ILFORD Ltd. Jan. 29,1965 [Feb. 3, 1964], No. 4540/64. Heading G2C. An exposed gelatine silver iodobromide photographic material, particularly X-ray film, is developed by treatment at 65 to 80‹F for a period not exceeding 100 seconds with a developer composition containing hydroquinone and a compound of the formula:- wherein R 1  is hydrogen or alkyl of 1 to 4 carbon atoms, R 2  is alkyl or alkoxy of 1 to 4 carbon atoms or benzyloxy or R 1  and R 2  together form a tetramethylene group, the said photographic material being such that it will achieve its maximum speed within the period of treatment.
Patent GB-681289-A (GB)
Title: Clutch and gear change operating systems for automobiles
Inventor: WEAVING JOHN HAROLD
IPC: B60W30/18
Filed: 1950-02-24
Abstract: 681,289. Change-speed control. AUSTIN MOTOR CO., Ltd. Feb. 14, 1951 [Feb. 24, 1950], No. 4745/50. Class 80 (ii). A coincidental fluid-pressure operated clutch and gear-shift control on a vehicle, comprises a single piston-valve 16, operated through a rod 18 or cable, by the usual multi-plane gearestablishing movements of a steering-columnmounted manual shift lever (not shown), the vertical cross-shift movement of which effects shiftrod selection mechanically through a Bowden cable (not shown), the piston-valve 16 selectively distributing and exhausting oil-pressure, from inlets 25, 20, to a single-acting spring- loaded clutch-actuating piston 2 (from inlet 25), and a double-acting spring-centralised piston 6 (from inlet 20), operating the usual gearestablishing lever 5. The housings of the clutch- and gear-pistons 2, 6, as well as that of the control-valve 16 are formed as a unitary structure integral with a cover-plate 12 which can be applied directly to an existing gear-box in place of the standard cover-plate. The valve-porting may, as shown, be such that, in moving from one gear position to another, the clutch is first disengaged, followed by neutralising the gear, in which position the clutch re-engages and again disengages before establishment of the new gear, after which the clutch finally re-engages. This double declutching may be dispensed with in a modified valve wherein the second and third lands from the top are combined. The exhaust outlet from the clutch cylinder 2 includes a restrictor 34, and a dashpot may be provided in the valve-actuating linkage to limit the speed. of gear-shift. A governorcontrolled valve may supply the cylinder 2 for automatic clutch-release at low engine-speeds, or a fluid-coupling drive may be provided. Oil pressure may be supplied by the engine-lubricating or other pump.
Patent GB-742487-A (GB)
Title: Improvements relating to electro-magnetic control devices
IPC: H01F29/14
Filed: 1953-02-20
Abstract: 742,487. Transformers; automatic regulation. HOWE, H. Feb. 20, 1953. No. 4766/53. Classes 38 (2) and 38 (4). [Also in Group XXXIX] A transformer has two main cores each divided into two physically separate subsidiary parts, the subsidiary parts of at least one main core being provided with auxiliary windings separate from the main windings which when excited divert the main flux from the core on which they are wound to the other core. Fig. 1 shows a transformer with two main cores F, G divided into parts F1, F2, G1, G2, having a primary winding P linking both cores and seriesconnected secondary windings S1, S2 on the two cores F, G respectively. Core parts F1, F2 bear respectively two series-connected control windings H1, H2 through which A.C. or D.C. may be passed. The control flux divides between the two parts and voltages in the control windings H1, H2 by the main flux are balanced out. With zero control current the main flux divides between the two cores F, G and the voltages induced in S 1 and S2 are equal and opposed. With maximum control current core F is saturated, no voltage is induced in S1 but only in S2 so that the output voltage is at a maximum. S2 may be omitted if each limb carries control windings H1, H2 and H3, H4, control current being transferred from one set to the other by switches, Fig. 2 (not shown) or a potentiometer K, Fig. 3. The primary winding P and secondary winding S1 may be in autotransformer connection, Fig. 4 (not shown), or each limb may have a separate secondary winding, the output voltage of one decreasing as that of the other increases, Fig. 5 (not shown). The core parts may be square or circular, of laminations or wound strip, each core comprising two concentric pairs placed side by side, Fig. 8, or the four similar parts may be arranged symmetrically, Fig. 7 (not shown). Threephase systems may be controlled by using three separate transformers, one in each phase, the main windings being connected in star or delta, Figs. 11-13 (not shown). Fig. 14 shows an arrangement of a transformer of the kind shown in Fig. 3 in which manual control of the voltage supplied to load R results from alteration of potentiometer K in the supply to control windings H1, H2 and H3, H4 and a control current derived from the load current through rectifier Xa or a current transformer CT and rectifier Xb is fed to an additional control winding H6, so that the output voltage does not vary with the load.