baber/WOPTO huggingface dataset:
Patent GB-1476789-A (GB)
Title: Multifilament yarn and process for manufacturing the same
IPC: D02G1/02
Filed: 1974-07-10
Abstract: 1476789 Multifilament yarn with slubs and protruding, cut filament ends TEIJIN Ltd 10 July 1974 [12 July 1973] 30496/74 Headings D1F and D1W A crimped thermoplastic polymer multifilament yarn is composed of relatively dense portions and fleecy, relatively sparse portions occurring alternately along the yarn, the yarn in the dense portions being twisted, filaments in the dense portions being irregularly entangled and cohered with each other to a greater extent than in the sparse portions, and the number of protruding filament ends on the yarn surface in the dense portions being larger than in the sparse portions, the ends being formed by cutting looped and/or arched filaments at the yarn surface. To make the yarn the multifilaments of a yarn 1, Fig. 1, having no twist or a twist smaller than 800 turns per metre, are separated, entangled and formed into surface loops in fluid nozzle 3 while being overfed by 5 to 25% between rollers 2, 4. The yarn is false twisted by spindle 6, the twist being set by heaters 5, and then contacted with friction roller 7 which cuts part or all of the loops to form protruding filament ends. Air pressurised at 2 to 7 kg x /cm<SP>2</SP> may be supplied to the nozzle. The yarn passes over the roller 7 under a tension of at least 0.1 g/d, e.g. 0.2 to 0.5 gild. The roller surface may be inlaid with teasels, or covered with an abrasive such as emery or carborundum particles. The direction of movement of the roller periphery may be the same as or opposite to that of the yarn. The roller may rotate at 500 to 5000 rpm. Alternatively, roller 7 may be located downstream of rollers 8 (Fig. 2, not shown), or between nozzle 3 and rollers 4 (Fig. 3, not shown). The roller may be replaced by a metal file. The produced yarn comprises, Fig. 4, alternating relatively dense, twisted portions M and relatively sparse, twisted portions N. The filaments within portion M are irregularly entangled and cohere with each other to a greater extent than in portion N. Portions M have more protruding filament ends 13 than portions N. The yarn also possesses loops 12 and crimps x. The portions M of the yarn produced by the Fig. 3 process have filaments coiled around them. The number of protruding filament ends is preferably greater than 30 per metre. Two or more multifilament yarns of different polymers, colour, fineness or cross-sectional shape may be treated to form a composite yarn. The yarns may be fed at different speeds, and may be heat treated to bind the filament ends. A composite yarn formed from two or more yarns of different melting temperatures may be heated by heaters 5 to the lowest melting temperature.
Patent GB-340345-A (GB)
Title: Process and arrangement for kinematograph projection in colours
IPC: G03B33/08
Filed: 1929-10-08
Abstract: 340,345. Colour kinematography- NAAMLOOZE VENNOOTSCHAP TOT EXPLOITATIE VAN FOTOGRAFISCHE FINLAY EN ANDERE PROCEDES, 279, Keizersgracht, Amsterdam. Oct. 8, 1929, No. 30542. Convention date, May 31. [Class 97 (i).] Multi-colour images are projected by means of a closed box I, placed in the beam from a lamp house F illuminating the film in a gate D, and carrying, on one side, a multi-colour filter J, and, on the other, a lens K producing an image of the filter on the film in the gate.
Patent GB-676518-A (GB)
Title: Improvements in or relating to television cameras
IPC: H03F1/36
Filed: 1948-11-24
Abstract: 676,518. Television. WEIGHTON, D., and PYE, Ltd. Jan. 23, 1950 [Nov. 24, 1948], No. 30571/48. Class 40 (iii). [Also in Group XL (c)] An inductance 4 connected between a television pick-up tube 1 and the grid of the first valve of the pre-amplifier 6 resonates with the stray capacities 7, 8 to introduce a hump in the signal-frequency response curve and improve the signal-to-noise ratio, compensation being effected by the negative feedback connection from the output of the preamplifier to the lower end of the load resistor 3. Preferably a sufficiently high feed-back ratio is employed, as described in Specification 676,517, so that the feed-back not only compensates for the resonance but also compensates for variations in the impedance of the pick-up tube with variations of the average illumination thereof.
Patent GB-1506998-A (GB)
Title: Device for supplying an electric discharge lamp
IPC: H05B41/232
Filed: 1976-07-22
Abstract: 1506998 Supply systems for discharge lamps NORTH AMERICAN PHILIPS CORP 22 July 1976 [25 July 1975] 30600/76 Heading H2H The supply system for a high or low pressure gas discharge lamp 1 includes a coil 6 and a capacitor 7 connected in series with the lamp, the capacitor being of the voltage dependent type in which the capacitance decreases as the applied voltage increases, the effect of which capacitor is to reduce the peaks in the lamp current waveform and thus to enhance the light output of the lamp.
Patent GB-1085694-A (GB)
Title: Improvements in moving walkways
Inventor: KAMEDA KAZUMICHI
IPC: B66B31/00
Filed: 1966-07-07
Abstract: 1,085,694. Endless moving walkways. ANZEN SAKUDO KABUSHIKI KAISHA. July 7, 1966. No. 30621/66. Heading B8A. A moving walkway comprises a belt 1 having laterally spaced rows of longitudinally-spaced ribs 11. The spaces 12 between the ribs may be transversely aligned (as shown), or may be disposed in oblique lines or curves. The rows of ribs pass between projecting fingers 4<SP>1</SP>. The belt may be supported by rollers (5) (Figs. 1, 2 and 4, not shown). Side rollers 10 guide the belt laterally. The belt may be cleaned by a roller (3).
Patent GB-1162052-A (GB)
Title: Process for the Preparation of gamma-Methylmercapto-alpha-Aminobutyronitrile and its Conversion to Methionine
IPC: C07C/
Filed: 1967-07-03
Abstract: 1,162,052. Methionine; #-methylmercapto-α- aminobutyronitrile. STAMICARBON N.V. 3 July, 1967 [14 July, 1966], No. 30625/67. Heading C2C. # - Methylmercapto - α - aminobutyronitrile is prepared by the conversion of # -methyl - mercaptopropionaldehyde in the presence of a cyanide in a liquid medium comprising ammonia, the weight ratio of ammonia to water during the conversion being greater than 1:1, at 0- 60 C., preferably 15-40 C., under superatmospheric pressures and carrying out the reaction for a period of time to effect a conversion of at least 90 moles per cent of the #-methylmercaptopropionaldehyde. As a source of cyanide hydrogen cyanide or a mixture of sodium cyanide and ammonium chloride may be employed. Methionine is prepared from the #-methylmercapto-α-aminobutyronitrile using the conventional hydrolysis techniques.
Patent GB-345191-A (GB)
Title: Improvements in and relating to plant for the manufacture of artificial wood
IPC: B27N3/26
Filed: 1930-06-10
Abstract: 345,191. Wood pulp boards or sheets. KAYSER, 0., 4, Bozenerstrasse, Sch÷neberg, Berlin. June 10, 1930, No. 30651. Divided on 316,224, [Class 96, Paper &c.]. [Class 96.] A machine for carrying out the process of Specification 316,222, [Class 90, Non-metallic elements &c.], comprises a suction roll 2 and an endless band 3 of water-permeable material such as felt or per. forated rubber. The pulp is fed positively from a head of about 4-6 metres by a conduit 1 in a direction tangential to the suction roll and is carried around the roll 2 by the band 3, the sheet being removed by a stripper 4 and led on to a carrier band 5 from which it passes if desired to a cutting- machine. Suction corresponding to 320-380 mms. of mercury may be used.
Patent GB-1079997-A (GB)
Title: Improvements in or relating to reversible ploughs
IPC: A01B15/14
Filed: 1964-08-04
Abstract: 1,079,997. Reversible ploughs. G. HERTECANT. Aug. 4, 1964 [July 23, 1963], No. 30690/64. Heading A1B. A reversible plough comprises a transverse body 2, 3 rotatably mounted on a shaft 4 and an arm 34, which carries two plough bodies of opposite hands, rotatable relative to the body about axle 33, the arrangement being such that any one of four ploughing positions may be selected. The body parts 2, 3 have guide plates 8, 9 respectively, and the part 3 is normally held against rotation relative to part 2 about axle 6 by a shear pin 10. The guide plates are held together by bolts 11, 12 which are slidable in slots 18, 19 of the plate 8. A locking bolt 23 carried by the plate 9 is normally held in its inoperative position by projections 27, but when the bolt is turned the projections engage with grooves 28 thus enabling the bolt to enter an aperture 27 of the plate 8. When this occurs the shear pin holes 13, 14 are aligned.
Patent GB-429262-A (GB)
Title: A centrifugally operated pump
IPC: B60C23/12
Filed: 1934-11-03
Abstract: 429,262. Tyre pumps. HAYWOOD, E. C., 25, Rusham Road, Nightingale Lane, Clapham, London. Nov. 3, 1934, No. 30776/33. [Class 8 (i)] A tyre pump rotating with the wheel and actuated centrifugally comprises end pieces A, B connected by a flexible wall F, or connected flexible end pieces. The part B is attached to a weighted cover C actuated by the centrifugal action of speed variation against a spring, and contains a relief valve L. The part A is secured to the tyre inflating connection on the wheel and comprises a skirt which supports the flexible wall F. An inlet aperture may be provided in the upper end of the wall F, the pressure of the wall on the skirt closing the aperture on the compression stroke. Alternatively an inlet valve may be provided in the part B. In a modification a bellows, or a pair of elastic discs, is provided between the parts A and B. U.S.A. Specification 1,874,375 is referred to.
Patent GB-339721-A (GB)
Title: Improvements relating to a method of and means for casting metals
IPC: B22D18/06
Filed: 1930-05-22
Abstract: 339,721. Birmingham Aluminium Casting (1903) Co., Ltd., and Vaughan, C. May 22, 1930. Casting-machines ; moulds.-A multipart mould k, having vents r, is placed ou a table c and pot b and over a nozzle e which is connected with a. tube d immersed in molten aluminium &c. in the pot. A cover is then placed over the mould to make a tight joint with the table and evacuated by a pipe j. The bore in the nozzle is eccentric so that after casting the runner may be severed by rotating the mould. The cover engages a groove f in the table c which may be provided with luting or a washer. Specifications 147,727, 201,025 and 220,289 are referred to.
Patent GB-803555-A (GB)
Title: Improvements in the method of controlling the operation of steam generating plant
IPC: F22D3/00
Filed: 1955-10-27
Abstract: 803,555. Combustion apparatus. RITCHIE, E. G. Oct. 25, 1956 [Oct. 27, 1955], No. 30835/55. Class 51 (1). [Also in Group XIII] The water feed and the firing rate of a boiler 1, Fig. 5, are controlled automatically in dependence on variations in the steam pressure consequent upon variations in the steam demand so that, when the demand increases above the average, a regulator 10 closes the feed water valve and, on further demand increase, a regulator 13 increases the rate of firing The process is reversed during decrease in the steam demand to average, the regulator 13 returning the firing rate to normal, then the regulator 10 opening the feed water valve, and this condition remains until, with a further reduction in steam demand to a predetermined below average level, the regulator 13 reduces the firing rate below normal. When the steam demand again rises the process is again reversed, the regulator 13 increasing the firing rate to normal and, above average steam demand, the regulator 10 closing the feed water valve. Overfeeding or underfeeding is prevented by high and low water level regulators 11 master-controlling the regulator 10 and a reducing valve 14 may be supplied to maintain constant consumer steam pressure. In a modification. Fig. 6 (not shown), the regulator 13 can only operate when the feed water valve is fully closed or fully open. The control system may be applied to a battery of boilers. Specification 551,089, [Group XIII], is referred to.
Patent GB-536830-A (GB)
Title: Improvements in or relating to agitators for suction cleaners
IPC: A47L5/34
Filed: 1939-11-27
Abstract: 536,830. Vacuum cleaners. HOOVER, Ltd. Nov. 27, 1939, No. 30893. Convention date, Nov. 28, 1938. [Class 8(i)] The rotary agitator of a suction cleaner comprises a body B having beaters (not shown) such as helical rods and brushes mounted in grooves in the body and having bristles mounted at the outer extremities of flexible strips such as rubber fingers H<SP>1</SP> extending from a longitudinal or helical rubber base strip H. The bristles may project beyond the orbit of the beaters.
Patent GB-1454570-A (GB)
Title: Gas-fired burner
IPC: F23D14/14
Filed: 1974-07-12
Abstract: 1454570 Burners PARKINSON COWAN APPLIANCES Ltd 16 May 1975 [12 July 1974] 30896/74 Heading F4T A gas-fired-burner comprises a tile 13 with a plurality of apertures, mounted in a housing 10, fed with a gap/air mixture at 11, a flange 12 for receiving the tile, and a seal including a gasket 14 and a resilient means 15 which extends around the periphery of the tile. The gasket 14 is formed from ceramic paper and means 15 may be formed by four strips of stainless steel or by a single member extending around the periphery of the tile.
Patent GB-631783-A (GB)
Title: A centrifugal clutch
IPC: F16D43/10
Filed: 1947-11-21
Abstract: 631,783. Centrifugal friction clutches. CORNE, L. M. Nov. 21, 1947, Nos. 30897, 30898 and 30899. Convention dates, Dec. 19, 1946, May 22, 1947 and Oct. 22, 1947. [Class 80 (ii)] In a centrifugal friction disc-clutch 20 of the kind in which centrifugal clutch engaging masses 6, acting on a spring-released clutch presser-plate 21, pivot at 5 on a freely-mounted carrier 4, which can be frictionally clutched to a facing 30 of the driving housing 1 by a splined disc 27, to cause speed-responsive engagement of the main-clutch 20, the carrier 4 is normally clutched to the housing 1 by springs 33 acting on its splined disc 27, and, to cause disengagement of the main clutch 20 at any speed, is released from the housing 1 by energising a fixed electromagnet 28, which attracts the splined disc 27 away from the housing surface 30 and into frictional engagement with a fixed brake-surface 31, thus arresting the carrier to cause collapse of the masses 6 by springs 38, and consequent disengagement of the main clutch 20. Four masses 6 are grouped about the carrier 4, each having stop-bars 39 to limit outward movement, and rollers 11, which latter track a cam-surface on a plate 14 splined to the masscarrier 4 and thrusting the main presser-plate 21 through a combined plate-centralising and thrustbearing 40, an axially slidable plate 15 rotating with the driving housing on pins 3, and springs 22 or hydraulic or pneumatic damping means. Both the plate 15 and the presser-plate 21 have play on their driving pins 3 to permit self-centring under centrifugal force. On a motor-vehicle the declutch brakemagnet 28 may be energised by one of the other controls of the vehicle.
Patent GB-1023803-A (GB)
Title: Improvements in or relating to envelopes
Inventor: WARRELL HENRY IVOR
IPC: B31B19/00
Filed: 1962-08-14
Abstract: 1,023,803. Envelopes. JOHN DICKINSON & CO. Ltd. Sept. 11, 1963 [Aug. 14, 1962], No. 31146/62. Heading B6A. [Also in Division B5] In envelopes which have one end permanently unsealed to allow for postal inspection of their contents the walls 10A, 11A at this end are formed with flaps 10,11, the flap 11 extending beyond the flap 10, and a strip 14 is secured to the wall 10A from which the flap 10 extends by a U-shaped stripe of adhesive 15. The end is closed by folding the outer part of flap 11 about line 13 over flap 10 and then folding both flaps about line 12 into the pocket formed by the strip 14. Alternatively, only one wall of each envelope is provided with a flap at the unsealed end, which flap is, as before, folded into the pocket formed by the strip 14, secured to the other wall. In a second embodiment, Fig. 5 (not shown), the strip 14 is reinforced by cutting a flap 17 from the wall 10A of the envelope carrying the flap 10, folding the flap back on itself and securing the strip 14 to it by an adhesive stripe 19. The flaps 10, 11 then are folded into the space between the flap 17 and the adjacent wall of the envelope. A method of and apparatus for folding the flaps of the envelopes is also described (see Division B5).
Patent GB-1196941-A (GB)
Title: Currency Calculator
Inventor: GOATER ERNEST FREDERICK GEORGE
IPC: G06G1/00
Filed: 1967-07-06
Abstract: 1,196,941. Currency conversion and change calculator. JAMES COOMBES & CO. Ltd. 8 July, 1968 [6 July, 1967], No. 31163/67. Heading G4B. A currency conversion and change calculator comprises two concentric discs, centrally connected and rotatably movable relative to each other, each disc having thereon a uniform centrosymmetric scale corresponding on the first disc to the units of one currency and on the second disc to the units of a second currency, the outer edge of the scale on one disc extending adjacent to the inner edge of the scale on the second disc. In use the calculator converts shillings and pence to new pence and vice versa, and also by relative rotation of the discs indicates change for transactions in either currency. In a preferred calculator a paper or cardboard disc marked with one scale is e.g. glued on to a similar sized plastics disc. A second scale is marked on a transparent disc of plastics material or celluloid of the same size as the paper or cardboard disc. The two resulting discs are then joined rotatably together at their centres, the two scales being visible through the transparent plastics disc. Alternatively, the disc carrying the inner scale may be of smaller diameter than the disc carrying the outer scale. The discs may be of polystyrene, card, metal &c.
Patent GB-1434817-A (GB)
Title: Pre-combustion chamber internal combustion engines
IPC: F02M31/087
Filed: 1973-06-29
Abstract: 1434817 IC engine intake and exhaust passages HONDA GIKEN KOGYO KK 29 June 1973 [30 June 1972] 31168/73 Heading F1B The cylinder head inlet passages 5 and 8 for a mixture and a richer mixture supply respectively to main and auxiliary communicating combustion chambers 2 and 3 and the exhaust passage 6 from the main chamber are arranged in heat conducting relationship for heat transfer from the exhaust gases to the inlet mixtures.
Patent GB-838737-A (GB)
Title: Synthesis of ª‰-cyanopropionaldehyde
Filed: 1957-10-04
Abstract: b -Cyanopropionaldehyde is produced by reacting acrylonitrile, in solution in a non-alcoholic organic polar solvent which forms a complex salt with cobalt carbonyl, under the conditions of the oxo synthesis with carbon monoxide and hydrogen in the presence of cobalt carbonyl.  Specified solvents are acetone and ethylene glycol methyl ethyl ether.  Specification 698,279 is referred to.
Patent GB-505598-A (GB)
Title: Improvements in or relating to automatic tuning devices for radio receivers
IPC: H03J7/16
Filed: 1937-11-15
Abstract: 505,598. Wireless receiving circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Nov. 15, 1937, No. 31317. Convention date, Nov. 14,1936. [Class 40 (v)] In an automatic tuning-correction circuit in which a differential frequency control voltage is derived from a filter 3 having the centre of one coil connected with one end of the other coil, the rectifiers 2, 13, for providing the opposing D.C. potentials are also used for demodulation. In series with resistances 4, 17, across which the D.C. control potentials are developed, are connected transformer windings 28, 29, one of which is reversely connected so that the two L.F. voltages are applied in additive phase to the grid of valve 8. The resultant control voltage at point 31 is also amplified in the low-frequency stage 8 and' operates electrodynamically through the de-, vice 21 a correcting condenser in the receiver. In a modification, valve 8 is replaced by a push-pull pair, the secondary of the input transformer being divided and connected across resistances 4, 17, the tune correcting means being operated by the differential anode current of the valves.
Patent GB-1470672-A (GB)
Title: Manufacture of foundry moulds and cores
IPC: B22C15/08
Filed: 1974-07-15
Abstract: 1470672 Making foundry moulds and cores BAKER PERKINS HOLDINGS Ltd 7 July 1975 [15 July 1974] 31325/74 Heading B3G Mould or core boxes 1 are moved sequentially and intermittently by a ram 3 through a sand filling station B, sand compacting station C, curing station D, mould inversion station E and discharge station F; the empty boxes are returned by a ram 27 to an inversion station A. At station B sand, catalyst and binder mixture is discharged from a mixer 6 into a mould box and fluidized by pressure air emitted from perforated walls in a frame 4 and from vents 8 in a pattern plate 9. At station C the box is closed and sealed by a head 13 having a diaphragm 16; simultaneously a vacuum box 15 is raised by piston and cylinder assemblies 14 to engage the mould box base. Vacuum is applied to the box 15 via a valve 20 and suction applied to the sand via the vent 8 whereby the diaphragm is drawn on to the sand to compact it. The diaphragm is removed from the surface of the packed sand by applying suction to the head. At the station E a high pressure air box is applied to the base of the mould box whereby the mould is discharged pneumatically to station F. Sand compaction may be assisted by applying a pressure to the diaphragm head.
Patent GB-209060-A (GB)
IPC: C10M173/00
Filed: 1923-12-13
Abstract: Lubricants suitable for cylinder lubrication are obtained by emulsifying together water and a lubricating mineral or tar oil, e.g. tar fat oil, that has been treated with electrical glow discharges. The treated oil may be mixed with other oil before emulsification, or with more water after emulsification.  In an example, single phase alternating current of about 4300-4600 volts and a fequency of 500 per sec. is supplied to aluminium electrode plates that alternate in polarity, a large number of plates being arranged on frames so mounted on a horizontal shaft that the lowest frame dips into the oil.  The air above the oil is replaced by hydrogen, the pressure reduced to 65 cm. of mercury, the oil heated to 60-80 DEG  C., and the shaft rotated at about 1 rev. per minute whereby scoops on the frames lift the oil and project it between the electrodes.  The treated oil is emulsified by being atomized in a steam jet apparatus.