baber/WOPTO huggingface dataset:
Patent GB-1088131-A (GB)
Title: A circuit arrangement for the periodic and/or non-periodic modification of the spectrum of audio frequency signals
IPC: G10H1/043
Filed: 1965-02-17
Abstract: 1,088,131. Photo-electric modification of electrical signals. MATTH. HOHNER A. G. Feb.17, 1965 [Feb. 18, 1964], No. 6856/65. Heading G1A. [Also in Divisions G5 and H3] The spectrum of audio-frequency signals, particularly in an electronic musical instrument, is modified by a filter including a photo-sensitive element the electrical properties of which are controlled by a co-operating light source. The filter may be a passive network, Fig. 4 (not shown) comprising a high pass branch 151, 154 and 157 and a low pass branch 152, 155 and 158. The photo-sensitive resistors 151, 152 are controlled by a light source 153 or a plurality of light sources or shutters. In the embodiments of Figs. 1, 2, 3 and 5 (not shown) valve or transistor amplifiers are provided with negative feedback connections comprising tuned circuits including photo-resistors whose resistances and hence the characteristics of the feedback connections are controlled by one or more lamps or shutters. The lamps may be in an oscillator or multi-vibrator circuit (Figs. 1 and 5) to give a periodic modulation to the audio signals, or pulsed by discharge of a capacitor (Fig. 3) to give an exponential attack or decay. Frequency independent modifications to the signals may also be made by means of further photo-resistors 88 and 89, Fig. 2, illuminated through a grey wedge 94 to effect a volume control and photo-resistor 86 illuminated through an oscillating grey wedge 95 to produce an amplitude vibrato or tremolo effect.
Patent GB-706495-A (GB)
Title: Improvements in or relating to ash extractors
Inventor: CRUSE GEORGE HENRY IRONS
IPC: C10J3/34
Filed: 1951-03-22
Abstract: 706,495. Discharging ashes from furnaces. POWER-GAS CORPORATION, Ltd. March 21, 1952 [March 22, 1951], No. 6869/51. Class 51 (I) An ash extractor for a gas producer, kiln or like furnace having a .rotatable ash bowl, comprises at least one fixed plough or plate and a conveyer for the withdrawal of ash or clinker from the ash bowl. As shown in Fig. 1 a conveyer 16 extends downwardly into an ash bowl 10 adjacent the outer periphery thereof, a fixed plate 28 being provided adjacent the lower end of the conveyer, rotation of the ash bowl causing ash to be directed over the plate and on to the conveyer which delivers it to the top of a shoot 37.
Patent GB-821407-A (GB)
Title: Improved tape transport apparatus
IPC: G11B15/58
Filed: 1958-03-05
Abstract: 821,407. Automatic loop control systems. BURROUGHS CORPORATION. March 5, 1958 [March 18, 1957], No. 7000/58. Class 38 (4). In a tape transport system utilizing vacuum columns for tensioning slack loops in the tape, the length of a loop of tape is maintained substantially constant by means dependent on variation in the capacitance of a capacitor forming part of the column. When moving between spools 22, 24, Fig. 1, the tape is stored in vacuum columns 36, 38 before and after magnetic heads 10. The direction of movement of the tape is determined by pinch rollers 19, 20 which selectively bring the tape into frictional engagement with capstans 14, 16 driven in opposite directions by a motor 18. The spools 22, 24 are driven by motors 26, 28, respectively, the rotation of which is varied by motor controllers 48, 50. The vacuum columns are evacuated by a vacuum pump 44 and the width of a column is such that the open end is sealed by a tape loop. Fig. 2 shows a crosssection of a column along plane 2-2, the capacitor, forming one side of the column, comprises a perforated rigid plate 56 insulated by a layer 60 from a flexible plate 58 which deflects inwards under the pressure differential due to the vacuum in the column. The capacity, varying with the length of the loop, is applied across a Foster-Seely discriminator 64 supplied at a fixed frequency by an oscillator 66. The D.C. error signal controls a magnetic amplifier 72 supplying one phase of the two-phase motor 26 driving the spool 22. In an alternative arrangement of the capacitor, Fig. 3 (not shown), the insulating layer is replaced by a ring to leave an air-space between plates 54 and 56. In a further arrangement, Fig. 4 (not shown), the rigid plate 56 of the capacitor is split vertically so that two capacitors are formed balanced about the earth potential of the flexible plate 58.
Patent GB-292221-A (GB)
Title: Improvements in and relating to the notch fitting for umbrellas and the like
IPC: A45B25/06
Filed: 1927-03-14
Abstract: 292,221. Royle, C. N. March 14, 1927. Top-notches.-A top-notch for an umbrella comprising an externally grooved ring 5 with radial slots' to receive the ribs is provided with a flange 6 of greater diameter than the ring and having a convex exterior. The flange may have a radial surface 14 against which the ends of the ribs 12 abut.
Patent GB-1424372-A (GB)
Title: Fluid coupling
IPC: F16D35/02
Filed: 1973-02-14
Abstract: 1424372 Fluid couplings HOLSET ENG CO Ltd 14 Feb 1974 [14 Feb 1973] 7168/73 Heading F2W In a viscous shear type fluid coupling for driving a radiator cooling fan wherein a driving disc 20 rotates within a working chamber 22 which is separated from a reservoir 24 by a partition 26 having valve controlled filling ports 36 radially inwardly of emptying ports 28, a cylindrical flange 37 on the partition 26 directs liquid from the filling ports 36 into radial ducts 32 in the driving disc 20 whereby liquid from the filling ports 36 flows directly to the periphery of the working chamber to facilitate rapid filling of the coupling and prevent air locks in the shear spaces 21, 23. The filling ports 36 are controlled by a valve strip 38 in response to temperature and flow through the emptying ports 28 is facilitated by scoops 30. The radial ducts 32 may be an annular chamber in the driven disc 20 connected to ports 34 at the periphery of the disc 20 or may be individual radial passages. In Fig. 2 (not shown) axial ducts in the driving disc 20 permit flow from the ducts 32 directly into the shear spaces.
Patent GB-563239-A (GB)
Title: Improvements in the production of chromium compounds
IPC: C01G37/14
Filed: 1942-08-28
Abstract: 563,239. Calcium chromate. UDY, M. J. Aug. 28, 1942, No. 7173/44. Convention date, March 19, 1942. Divided out of 561,212. [Class 1 (iii)] Anhydrous calcium chromate is obtained by heating an aqueous solution containing calcium and chromate ions to a temperature of at least 180‹ C., preferably under a pressure of at least 150 lb. per sq. in.
Patent GB-609266-A (GB)
Title: Improvements in or relating to envelopes for electric components
IPC: C04B37/02
Filed: 1946-03-09
Abstract: 609,266. Casings for resistances; condensers. PHILIPS LAMPS, Ltd. March 9, 1946, No. 7435. Convention date, June 26, 1941. [Class 37] An envelope which houses an electric component such as a condenser or resistance and which is closed at least at one end by a ceramic cover 10 through which passes one or more connecting leads and wherein the cover 10 is coated at least partly by a layer of glaze, at least one leading- through aperture of the cover is widened at the end so as to form a recess on which a coating of glaze is formed. The aperture may be so widened that the cover forms a dish with a rim 11, or two leads may pass through a single cover with a glazed recess on the inner side around each lead. Dishshaped covers 10, 10<1> are glazed where shown by external shading and are soldered at 18 to a copper casing 9. Condenser plates 13, 13<1> are wound on an insulating cylinder on a conductive pin 14 and are connected to plates 12, 12<1>. The pin 14 is soldered at 20 to the covers 10, 10<1>. The plate 12<1> is soldered at 17 to the pin 14, and the plate 12 is connected by the solder 18 to the casing 9. Insulating cylinders 15, 16 of material which has small highfrequency losses on the pin and inside the casing protect the condenser within the casing.
Patent GB-326660-A (GB)
Title: Improvements relating to variable speed planetary gearing
IPC: F16H61/02
Filed: 1929-03-07
Abstract: 326,660. Kittilsen, C. March 7, 1929. Variable-speed epicyclic gearing. - Epicyclic variable-speed and reversing gearing for motor vehicles, cycles, and other apparatus of the type in which the ratio varies automatically with the load has a slipping coupling or clutch connecting directly or indirectly a pair of annuli, one connected to the driving or driven shaft, with which gear integral planet wheels on a carrier secured to the driven or driving shaft; gearing for obtaining an invariable reduced drive, adapting the engine to be used as a brake, may be incorporated. A flywheel 3 and drum 2, Fig. 1, are secured to the engine or driven shaft and a shaft 9 to the driven or engine shaft. A carrier 13 secured to the shaft 9 carries planet wheels 5, 6 secured together and gearing respectively with a toothed ring 4 on the drum 2 and a ring 7 on a drum 8 connected by a Weston clutch 17<a> to the drum 2. A spring 18 bearing on a presser plate 19 maintains clutch engagement. A brakedrum 15 is secured to a sleeve 14 on the drum 8. Drive is solid until increase of load causes slip of the clutch and reduction of gear. Disengagement of the clutch by the lever 23 and application of the brake shoes &c. 16 to the drum 15, which may be effected in one operation, gradually brings the shaft 9 to rest and reverses its direction of rotation. In a simpler construction for use on cycles, the clutch 17<a> is replaced by a spring washer connecting the driving axle with the drum 8, and the brake drum providing for reverse drive and braking is dispensed with. The modified gear shown in Fig. 3 embodies the features of that shown in Fig. 1 and, in addition, the planets 6 engage a sun-wheel 100 on a sleeve 101 which is connected bv a clutch 102a to the drum 8 and carries an additional brake-drum 107. The clutch-spring 18 and lever 23 control both clutches simultaneously. Clutch disengagement and application of the brake shoes 104 stations wheel 100, so that the engine and drum 2 are geared to the shaft 9 without automatic load-control and the engine can be used for braking. Similar results are obtainable with the gear shown in Fig. 5, in which large planet-wheels 5, 6 are mounted on eccentrics on the shaft 9, which is now connected to the engine, the drum 2 being secured to the driven shaft 33. The clutch 17<a> connects the drum 8 with an intermediate drum 200, which is connected to the drum 2 by epicyclic gearing comprising planet-wheels 37 carried by the drum 2, an annulus 36 on the drum 200, and a sun-wheel 100 on the driving-shaft 9. Brakes 16, 104 may be applied to the drums 8, 200 respectively, and the clutch 17<a> is actuated by levers 42 operated from the lever 23. When the clutch is released, application of the brakes 16, 104 effects reverse drive and non-automatic drive respectively.
Patent GB-313479-A (GB)
Title: Improvements in and relating to switches and plug-in sockets or like connections
IPC: H01R13/707
Filed: 1928-03-12
Abstract: 313,479. Turner, C. A., and Wadsworth, L. H. March 12, 1928. Plug couplings combined with electric switches. The plug fitting a socket b is locked in position when the switch a is closed, and when withdrawn either cannot be replaced when the switch is closed or alternatively locks the switch in the open position. A slider 4 moved by a cam 3 on the switch spindle 2 carries a pair of bolts 8 that engage a groove in the earthing plug in the socket 11 when the switch is closed. When the switch is open and the plug removed a spring plunger rises in the socket 11 and prevents movement of the slider 4. The roller 7 or projections on the slider and the cam 3 may be arranged to give a positive movement of the slider in both directions. The locking bolt may engage any part of the plug fitting and may for example enter an upper insulating section of one of the line sockets. According to the Provisional Specification the slider may be moved positively in one direction and in the other direction by a spring.
Patent GB-306728-A (GB)
Title: Improvements relating to apparatus for raising liquids
IPC: F04F1/06
Filed: 1928-03-12
Abstract: 306,728. Guichard, L. March 12, 1928. Vacuum apparatus. -In vacuum apparatus for raising liquids, the suction and atmospheric ports j, k are controlled by a single valve g on the float rod d. The liquid discharge valve l has a balance weight m and opens under the weight of liquid in the chamber a.
Patent GB-585824-A (GB)
Title: Improvements in motor driven looms
IPC: D03D51/00
Filed: 1944-04-25
Abstract: 585,824. Looms. ZOLLIKOFER, O. April 25, 1944, No. 7642. [Class 142 (i)] [Also in Group XXIV] A motor-driven loom having a clutch-coupling 5, 6 between the motor 1 and the loom 'main shaft 4, and a brake 7, 8 applied to the shaft 4, is started by a control handle 19 which operates in one direction of movement to release the brake and in the other direction to engage the coupling. The handle 19 is connected by a link 16 to the pivot 13 of a toggle lever 11, which engages at one end 14 a fixed stop 15 and is supported at the other end 12 by a second toggle lever 25. The brake member 8 is carried by a lever 9 connected to the lever end 12, and an adjustable stop 20 arranged upon the lever 11 near its end 14 operates through members 21....24, the coupling member 5. A contact member 32 upon the lever 25 completes the circuit of the motor 1. A plunger 31 operated by the detector of a stop motion engages the pivot 26 of the toggle lever 25 to collapse the lever and apply the brake and free the coupling members 5, 6. In starting the loom, movement in an anti-clockwise direction, as shown, brings the lever end 14 against the stop 15 and thereafter straightens out the toggle lever 25. Subsequent movement of the handle 19 in the clockwise direction rotates the lever 11 about its end 12 to actuate the members 21, 24 to engage the coupling 5, 6.
Patent GB-613014-A (GB)
Title: Method of and means for diluting liquids
IPC: B05B7/12
Filed: 1945-03-27
Abstract: 613,014. Garden spraying. BLASS, L. March 27, 1945, Nos. 7652 and 16667. [Class 69 (iii)] [Also in Group II] An apparatus for diluting concentrated liquids such as fertilizer, insecticide or fungicide comprises a conduit for the diluent joined by a feed line for the liquid to be diluted, means for converting part of the kinetic energy of the diluent into a motive difference of pressure for the flow of the liquid to be diluted, and means for regulating the difference of pressure thus derived and thereby, the rate of dilution. Water under pressure is passed through a garden hose 1, Fig. 1, and a nozzle 2 and induces a flow of fertilizer from a container through a tube 3. The proportions of the resulting mixture may be varied by a screwthreaded adjustment of the nozzle 2 on the hose 1 to alter the suction operating at the outlet of the tube 3. In the construction shown in Fig. 4, fertilizer solution is drawn into a Venturi nozzle 10, through passages 11, 12 in a pin 9, rotatably secured in the hose mouthpiece 8. Rotation of the pin 9 varies the suction at the outlet of the passage 12, and a calibrated dial 13 indicates the proportions of the mixture. In the construction shown in Fig. 5, water is drawn from the conduit 25 by a small tube 26 and displaces concentrated fertilizer solution from a chamber 28, the solution passing through a tube 24 into the water flowing in the conduit 25. The rate of dilution may be varied by the adjustment of a screw 30 which alters the pressure difference between the points in the conduit 28 at which the tubes 24, 26 are placed. The water and the solution in the chamber 28 may be separated by a floating sheet of material 29 of specific gravity intermediate between that of the solution and that of water. A further alternative construction is described in which the diluted. solution passes through a glass bulb whereby its colour and approximate concentration may be observed. Specifications 541,992, 557,787 and 560,170, [all in Group I], are referred to in the first Provisional Specification.
Patent GB-1487008-A (GB)
Title: Preparation of magnetite from ferrous sulphate
IPC: C01G49/08
Filed: 1975-02-24
Abstract: 1487008 Magnetite MONTEDISON SpA 24 Feb 1975 [25 Feb 1974] 7652/75 Heading ClA Magnetite is prepared from an aqueous ferrous sulphate solution by (a) adding alkali at 15-40 C. to precipitate about 2/3 of the ferrous iron as ferrous hydroxide, (b) blowing through air to oxidize the ferrous hydroxide to goethite αFeO(OH), (c) adding alkali to precipitate the remaining ferrous iron as ferrous hydroxide and (d) heating the slurry to 70-100 C. The goethite formed is acicular, yellowish and a submicron particle size; the magnetite is cubic, equiaxial and with a narrow size range. Preferably the Fe(II)/Fe(III) ratio is adjusted to 0À50 to 0À55 before step (c). The reactions may be followed by monitoring pH and redox potential.
Patent GB-437786-A (GB)
Title: Improvements in and relating to the generation of high pressure steam
IPC: F22B1/14
Filed: 1935-03-13
Abstract: 437,786. Direct-contact steam boilers. WITKOWITZER BERGBAU-UND EISENHUTTEN GEWERKSCHAFT, and LEDINEGG, M., Mahrisch-Ostrau, Czecho Slovakia. March 13, 1935, No. 7820. Convention date, March 15, 1934. [Class 123 (ii)] In a Loffler or like boiler in which water in a drum 5 is heated by direct contact with superheated steam, part of the superheated steam is led into contact with the feedwater before entering the drum. Steam is withdrawn from the drum by a pump 6, circulated through a superheater 2 and returned to the drum through a pipe 7 opening into the water space, steam being taken off for use through a pipe 8. Feedwater is supplied by a pump 9 through a heater 3 and enters the upper part of the drum through a perforated pipe 11. When the boiler steam consumption rises above the normal, a valve 14 is automatically opened to allow superheated steam to flow from the pipe 8 into contact with the feedwater, which enters the feed pipe through a sprinkler 15. The valve is also so controlled by a temperature sensitive member 17 in the feed pipe as to prevent the flow of superheated steam at such a rate as to effect the complete evaporation of the feedwater, and to shut off the steam when the feed supply is stopped.
Patent GB-713074-A (GB)
Title: Improvements in and relating to circuit breakers employing resistance switching
IPC: H01H33/16
Filed: 1951-04-04
Abstract: 713,074. Arc-rupturing in switches. BRITISH THOMSON-HOUSTON CO., Ltd. April 4, 1951 [April 4, 1950], No. 7822/51. Class 38(5) The main contact gap A of a circuit breaker is shunted by two or more (shown as three) secondary breaks C1 each provided with a series resistor R1. Preferably the resistors R1 are non-linear and the breaks C1 comprise spark gaps, but the latter may alternatively comprise a pair of contacts one or each of which is movable. The secondary breaks are opened shortly after the main break A, and if the main break is of the fluid blast type and the breaks C1 comprise spark gaps, the spark gaps may be interrupted by the pressure fluid used in the main break. Auxiliary capacitors or resistors may be connected to the shunt circuit to determine the voltage distribution along the latter. There may be a plurality of main breaks A each shunted as above described.
Patent GB-736586-A (GB)
Title: Improvements in or relating to means for manoeuvring of vehicles including aircraft on the ground
IPC: B64F1/22
Filed: 1951-04-04
Abstract: 736,586. Vehicle movers. KAYE, E., SHARP, J. R., MURRELL, K. F. H., MURCH, S. J., and BUCKINGHAM, J. April 3, 1952 [April 4, 1951], No. 7862/51. Classes 79(1) and 79(3). Apparatus for manoeuvring vehicles, especially aircraft, comprises lifting means for insertion beneath a wheel or axle of the vehicle to lift the wheel clear of the ground, a lifting means supporting frame 17 having a non- steerable wheel 21 at each side of the lifting means and a power driven steerable wheel 12 at the end thereof remote from the lifting means. In the embodiments shown the wheel 12 is steerable by a tiller 13 and is driven either electrically or by an engine. The lifting means in the embodiment shown in Fig. 1 comprises a lever 23 pivoted at 24 to the frame 17 and carrying at one end scoop arms 30, 31, which are pivotally controlled by a rod 37 operated by a hydraulic ram carried either in the lever 23 or in a casing 11. Pivotal movement of the lever 23 is effected by a hydraulic jack 128 under the control of a lever 28. The arrangement is such that the truck is moved into a position in which when the scoop arms are closed they engage the nose or tail wheel of an aircraft, the scoop end of the lever 23 is then raised and the truck can then manoeuvre the aircraft. In a modification, Fig. 2, the pivoted and raisable scoop halves are replaced by a forked lever 41 pivoted at 40 and pivotally controlled by a lifting jack 43, and a scoop member 50 carried by a ram 46, the ram and jack being under the control of levers 45, 47 mounted on the tiller 13. The arrangement is such that when the truck is in position the fork arms 44 of the lever 41 are raised to engage and lift the aircraft undercarriage sufficient to allow the member 50 to be projected under the aircraft wheel which is then allowed to rest on the member 50. The truck can then manoeuvre the aircraft.
Patent GB-175549-A (GB)
Title: Improvements in or relating to toe-puffs, stiffeners, insoles and like parts for boots and shoes
IPC: A43B23/08
Filed: 1921-03-12
Abstract: 175,549. Macdonald, D. B. March 12, 1921. Stiffeners; insoles; soles.-The toe puff or like stiffener described in Specification 143,310 is constructed wholly or mainly of paper, and the invention is stated to be applicable to the manufacture of insoles and soles. The stiffener shown in Fig. 1 is composed wholly of paper and comprises face and back layers a, b, and three inner layers c which are provided with perforations or embossments d to carry and retain the stiffening- agent. Fig. 2 shows a stiffener consisting of face and back layers a, b of paper, and two inner layers e of reticulated textile material, such as n.uslin or canvas. Other modifications are described comprising various combinations of layers of paper and textile material. The stiffening- agent is preferably one containing a solution of celluloid, cellulose esters, or a mixture of the same in a volatile solvent and may, for example, be composed of a mixture in varying proportions, of celluloid, leather dust, methyl acetone, and benzol. Specification 155,418 also is referred to.