baber/WOPTO huggingface dataset:
Patent GB-932521-A (GB)
Title: Improvements relating to noise reducing enclosures
Inventor: DUNSBEE JOHN
IPC: G10K11/172
Filed: 1961-06-01
Abstract: 932,521. Modifying acoustic properties of rooms. FERRANTI Ltd. May 21, 1962 [June 1, 1961], No. 19746/61. Class 13. [Also in Group XXXV] A noise-reducing enclosure such as a transformer tank has at least one resonant absorber (e.g. Helmholtz resonator) which is tuned to the objectionable frequencies of the noise source and which has the side in which the hole or holes are formed facing a side of the enclosure and separated from it by a narrow passage. The transformer 1 (Fig. 2), has brick enclosure 2 and four Helmholtz resonators 3 the space 4 being freely connected to the remainder of the space in the enclosure. The holes may be rough or the resonator cavity may contain absorbent material. In the case of a panel absorber it is the side formed by an elastic panel or membrane which faces the side of the enclosure and this membrane may be loaded with a non- elastic mass. A resonator may be arranged close to the top surface of the transformer enclosure.
Patent GB-596728-A (GB)
Title: Improvements in or relating to tin opening devices
IPC: B67B7/40
Filed: 1945-08-01
Abstract: 596,728. Tin-openers. DUFF, P. A. Aug. 1, 1945, No. 19773. [Class 66] A tin-opener made from a metal rod of round section has a handle B at one end and a substantial portion D of D-section at the other. A central longitudinal slot C<1> receives the tab of a tin.
Patent GB-667694-A (GB)
Title: Improvements in or relating to electrical sound reproducing apparatus
IPC: H03G3/24
Filed: 1949-07-28
Abstract: 667,694. Public address systems; automatic volume control. GENERAL ELECTRIC CO., Ltd., KAYE, E. J., and ROWE, T. W. G. July 28, 1950 [July 28, 1949], No. 19905/49. Class 40 (iv). [Also in Group XL (c)] In an electrical sound reproducing system the output is controlled in accordance with the ambient noise level by biasing signals obtained from two microphones 1, 2, one of which 1, is directed towards the reproduced sound and the other 2 towards the source of ambient noise. The output from microphone 2 is amplified in 3 so that its signal content from the reproduced sound is made equal to the signal from microphone 1 and the two signals are then applied in opposite senses to control the gains of valves 13 and 14 in the amplifier 4, in which the output from source 10 is amplified, prior to passing to the main amplifier 11. A limiter 7 precludes compensation below a predetermined ambient noise level and a further limiter 8 is inserted in the output of the main amplifier. In a modified arrangement the source is applied directly to the main amplifier which is controlled by a biasing signal derived from the combined microphone outputs.
Patent GB-296869-A (GB)
Title: Improvements in or relating to roller hooks for overhead bars or rails
IPC: A22B7/00
Filed: 1927-07-30
Abstract: 296,869. Eaton, F. July 30, 1927. Curtains, drawing and suspend ing.-Roller hooks carry a device which can be moved by contact with rail supports to clear them and which returns to normal after passing the support and is positioned to prevent tilting. The hook 6 is supported by a frame 5 which carries a roller 8. Upon the short leg 3 of the frame is pivotally mounted a depending bar 1 having chamfered edges 2 which on meeting an obstruction swings clear but ordinarily hangs down parallel to the rail.
Patent GB-1436664-A (GB)
Title: Timepiece process for the production of laminated foils
IPC: G01D11/28
Filed: 1974-05-08
Abstract: 1436664 Clocks SEIKO KOKI KK 8 May 1974 [9 May 1973] 20292/74 Heading G3T Light from a source 9 behind a clock dial 2 is caused to fall on the front surface 2b of the dial by means of a light conducting or reflecting member at least a portion of which is situated centrally in front of the dial. As shown the member is a twelve-sided reflector 8 formed integrally with the rear surface of a glass 3 to reflect light on to the dial indicia. Light is directed on to the reflector by a tube 7 with a condensing lens 10. The tube's rear end 7a is fixed to a plate 5 attached to the dial and the tube carries hand arbors 13, 14. In an alternative embodiment a light transmitting member (8a), Fig. 2 (not shown) is fitted in the front end of the tube 7 and has twelve lightconducting fingers (23).
Patent GB-1504892-A (GB)
Title: Electrodes for alkaline batteries
IPC: H01M4/28
Filed: 1975-05-14
Abstract: 1504892 Electrolytic impregnation of oxidized Ni WESTERN ELECTRIC CO Inc 14 May 1975 [20 May 1974] 20337/75 HeadingC7B [Also in Division H1] A process for producing a battery electrode comprises forming an oxide film on a porous nickel plaque, wetting the plaque in an acidic solution containing cations of the active substance in the electrode, and then precipitating the cations from the solution into the plaque. The oxide film, which protects the plaque against acidic attack during the active material impregnation process, is formed by heating the plaque in air. After forming the oxide layer the plaques are washed, dried and chemically or electrolytically impregnated with the active material.
Patent GB-800057-A (GB)
Title: Camouflaging covering for helmets
IPC: F41H3/00
Filed: 1956-07-02
Abstract: 800,057. Camouflaging covering for helmets. EKMAN & BRUNDIN, July 2, 1956 [July 5, 1955], No. 20402/56. Class 63 A camouflaging covering for helmets comprises an open-work plastic foil. Polyvinyl chloride foil containing plasticizing agents to enable it to remain flexible at low temperatures and containing flamequenching substances such as antimony oxide is cut to substantially oval shape and is punched with an irregular pattern of apertures preferably with the punched-out portions remaining attached to the foil. A portion of the foil is intended to hang down over the neck and the back part of the head for protection against war gas and radiation, and this portion is not provided with apertures but may be reinforced with another foil or coating or may be made entirely from another material A suitable surface may be obtained by spraying a plastic solution on to the covering in such manner as to provide a dull, coarse finish.
Patent GB-1421813-A (GB)
Title: Vehicle having an accessory-attaching device
IPC: A01B59/043
Filed: 1973-04-30
Abstract: 1421813 Three point linkage KLOCKNERHUMBOLDT-DEUTZ AG 30 April 1973 [13 May 1972] 20413/73 Heading A1P An agricultural vehicle which employs a resiliently suspended frame includes an arrangement whereby the effect of vehicle frame deflection upon the towed accessory is eliminated. The vehicle comprises an axle 1 which supports the frame side memibers 3 via resilient blocks 2, and which is pivotally connected to a pair of lower draft links each of which comprises two links 17, 14 connected by a ball and socket joint 15. An upper draft link 11 is pivotally connected to a frame crossbar 5 itself connected to a lower cross bar 6 via plates 8. The lower cross bar is also connected to the frame side members 3 via arms 7 and to the lower draft links via pivoted links 18. The lower draft links are connected to the upper cross bar via rams 26. Should the frame move relative to the axle in operation the upper and lower cross bars move by the same amount and the links 18 transmit the movement of the lower cross bar to the lower draft links. The relative movement does not thereby cause the accessory to tilt relative to the vehicle. The rams 26 are double acting and are used to raise and lower the lower links. In a modification the joints 15 are connected to each other and to the end 10 of the upper link 11.
Patent GB-1116440-A (GB)
Title: Process for preparing 2,3-dihydro-para-dioxin
Inventor: MOSS RODNEY DALE
IPC: B01J23/86
Filed: 1967-05-03
Abstract: 2,3-Dihydro-p-dioxin is prepared by contacting diethylene glycol in the liquid phase at a temperature above 200 DEG  C. with a copper chromite catalyst having 15-80% by weight of copper and 10-45% by weight of chromium based on the total weight of catalyst, and a promoter therefor.  The preferred promoters are alkali metal sulphates, alkali metal pyrosulphates, calcium fluoride and aluminium oxide.
Patent GB-137878-A (GB)
Title: Improvement in the manufacture of paint oils suitable for cement and concrete
Filed: 1918-12-10
Abstract: The solid elastic mass obtained by fully polymerizing fats, oils, and fatty acids is dissolved in epichlorhydrin, dichlorhydrin, tetrachlorethane, or pentachlorethane and the solution is thinned with turpentine or turpentine substitute for use as a paint oil. Vegetable or animal oils or fats such as linseed oil, soya bean oil, cotton seed oil, fish oils or wool fat, and oleic, stearic or margaric acids may be treated and the polymerization is effected by blowing finely divided air through the heated oil &c. in presence of magnesium carbonate and manganese hydroxide or of calcium hydroxide.
Patent GB-499498-A (GB)
Title: Improvements in or relating to warp beams
IPC: D02H13/28
Filed: 1937-07-24
Abstract: 499,498. Warp beams. McVEIGH, W. B., and HIBBERT, H. M. July 24, 1937, No. 20524. [Class 142 (ii)] [Also in Group XXIV] A warp beam comprises a barrel 3 formed with a row of radial holes 9 along its length, a flange 10 movable along the barrel and having a boss 11 serrated as at 14 and formed with a radial hole 12 elongated in the direction of the length of said barrel, a bolt or like member 13 adapted to pass through the hole 12 into a hole 9 in the barrel, and a washer 15 with a serrated face engaging with the serrations on the boss, so as to allow the flange to be secured in finely-adjusted position on the barrel. The barrel may have a plurality of rows of holes and the boss a corresponding number of bolts. The warp beam may be made of wood supported on a metal shaft 4, and formed with metal sleeves 7.
Patent GB-583415-A (GB)
Title: Improvements in or relating to gulley emptying apparatus incorporating a vacuum chamber
IPC: E03F7/10
Filed: 1944-10-24
Abstract: 583,415. Tank wagons. DEIGHTON'S PATENT FLUE & TUBE CO.,Ltd., RIDDELL, L. H., and HALLIDAY, H. Oct. 24, 1944, No. 20663. [Class 78 (iv)] [Also in Group XXXII] In gulley &c. emptying apparatus of the kind comprising a motor vehicle provided with a sludge tank 4 into which the contents of the gulley are sucked through a pipe 6, a pusher plate 13 is provided in the tank which is actuated by a hydraulic or mechanical ram 11 to compress the sludge to remove surplus liquid when the rear door 14 is closed and also to discharge it when this door is opened. The surplus liquid passes through an aperture 18 into a compartment 9 which is situated between the sludge tank and a tank 5 containing water or disinfectant used for resealing the gulley. Access to the tank 4 is obtained either by swinging the plate 13 centrally on a hinge 16 or through doors in the plate. The suction pipe from the vacuum pump .terminates in a float valve 19 in the compartment 9 which is arranged to cut off the vacuum when the liquid in the compartment reaches a predetermined height. This valve is arranged to close also when the plate moves towards the right.
Patent GB-1531920-A (GB)
Title: Methods of operating imagers
IPC: H04N5/359
Filed: 1976-05-19
Abstract: 1531920 Television RCA CORPORATION 19 May 1976 [21 May 1975] 20713/76 Heading H4F A method of operating a CCD imaging array involves a charge integration period having a period when charges above a first level are removed from charge accumulating locations and a subsequent period then charges above a second, higher level are removed from the charge accumulating locations. In one embodiment, Fig. 4, the method is realized by application of a ramp voltage 20 which creates a continuously linearly deepening potential well in the CCD substrate. The method reduces the build up of charges due to "dark current" as seen in Fig. 3, in which the area under curve AA represents the dark current charge at a normal array location using the constant integration voltage of the prior art, that below curve A corresponds to the dark current charge at a normal array location operated according to the method. Areas under curves BB, and B represent respective dark currents at defective array locations. In the latter case the dark currents B are only 30% of those generated BB by prior art methods. The dynamic range of the array is increased as described w.r.t. Figs. 7 to 10 (not shown). Other useful integration voltage profiles are illustrated in Figs. 11 and 12 (not shown). The method permits partial or total "on chip" gamma correction as described w.r.t. Figs. 13 to 17 (not shown). The integration voltage profiles illustrated are applied to the relevant one of the phased electrodes superposing the derived potential well. Alternatively complementary profiles may be applied to adjacent electrodes to vary a potential barrier, permitting charge disposal in accordance with the method Fig. 16 (not shown). The method may be applied to other forms of images such as those employing photo diodes, charge injection devices or vidicons.
Patent GB-960975-A (GB)
Title: Heat exchanger element
Inventor: LARSSON GUNNAR
IPC: F28D1/03
Filed: 1962-05-30
Abstract: 960,975. Plate-type heat exchangers. UDDEHOLMS A.B. May 30, 1962, No. 20777/62 Heading F4S. A heat exchanger element comprises two metal sheets 1 and 2, each formed with two parallel longitudinal rows of depressions 3 separated by a land 5, the sheets being. placed face to face and sealed around their marginal edges 4 and along the land, the overlying depressions forming two continuous zig-zag channels extending along the length of the rows, an inlet and outlet being provided at one end of the rows while the opposite end has a common depression 8 which provides communication between the two zig-zag channels. As shown, depressions 3 in the two sheets are in the form of equally spaced troughs of the same shape and size. The element may be bent longitudinally to provide a non-planar unit in the shape e.g. of a circle, a spiral (Fig. 4, not shown), a cylinder, a square or a zig-zag configuration. Several elements may be connected in series.
Patent GB-1391583-A (GB)
Title: Hydroxylation of aromatic compounds
IPC: C07C27/00
Filed: 1973-05-02
Abstract: 1391583 Hydroxylation of aromatic compounds RHONE-POULENC SA 2 May 1973 [3 May 1972] 20783/73 Heading C2C Hydroxylated aromatic compounds are prepared by hydroxylating a compound having the formula in which R and R<SP>1</SP>, which may be the same or different, are hydrogen or C 1-4  alkyl, with hydrogen peroxide in the presence of at least one of phosphoric acid or esters thereof, fluorophosphoric acid or esters thereof, phosphorus pentoxide, phosphorus fluoride or phosphorus oxyfluoride in the absence of an acid of pH less than -0À1.
Patent GB-223692-A (GB)
Title: Improvements in trouser presses and the like
IPC: A47G25/72
Filed: 1923-08-16
Abstract: 223,692. Hughes, C. E. Aug. 16, 1923. Trouser presses; coat hangers.-A base board 1 co-operates with a pair of spring - pressed flaps 2. Springs 6 engage ribs 4, 5 respectively on the flaps and on the base board. The flaps are provided with finger grips 8. Wire loops 3 may be used for connecting the flaps and base board. One end of the base board may be formed at 9 as a coat hanger, being pierced at 10 for the passage of the trouser legs, or it may have a straight upper edge with a rod for fitting in a sliding rack in a wardrobe or the like.
Patent GB-678188-A (GB)
Title: Improvements in grinding machines
IPC: B24B5/06
Filed: 1950-08-23
Abstract: 678,188. Shoots. BRYANT CHUCKING GRINDERCO. Aug. 23, 1950. [Aug. 23, 1949] No. 20856/50. Class 78 (i). [Also in Groups XXII and XXIII] Workpieces 21 of cup form are fed one at a time from a stack in a magazine 207 to the chuck 17 of a grinding machine (see Group XXIII) by a plunger which has a yielding periphery for engaging the interior of a workpiece and is mounted on an arm 205 pivoted on a crosshead 197 slidable on guide rods 198, 199. The necessary sliding movements of the crosshead and rocking of the arm to cause the plunger to transfer the lowermost workpiece in the magazine to the chuck are produced by two cams 190, 220, acting through levers 191, 194, and 222, 223, 224, 226 ; the cam 220 also acts through levers 224, 228, 229, to cause pin 230 to be inserted between the two lowermost workpieces and lift the upper of the two when the lowest workpiece is to be transferred. Specifications 678,203, 678,203 and 678,204, [all in Group XXIII], are referred to.
Patent GB-1067417-A (GB)
Title: Improvements in or relating to method and apparatus for indicating performance characteristics of reciprocating piston machines
IPC: G01L23/08
Filed: 1965-05-17
Abstract: 1,067,417. Measuring engine performance electrically. SOUTHERN GAS ASSOCIATION. May 17, 1965 [May 18, 1964; Dec. 21, 1964], No. 20858/65. Heading G1N. The performance of a reciprocating piston engine is monitored by obtaining the pressure/ volume relationship for each cylinder. The volume is obtained by coupling a resolver to the crank-shaft, the output being augmented by a second harmonic signal to relate the piston movement more accurately to the shaft rotation. As shown (Fig. 2), the crank-shaft is coupled via shaft 18 to a resolver 21a, and through a 2:1 gearing 20, 23 to a resolver 21b. The resolvers are mounted on a partition 26 fixed to a housing 12 which can be rotated by a knob 42 and gears 39, 40 to adjust the phase angle of the fundamental signal from resolver 21a. The stator of resolver 21b can also be rotated by a knob 31 to adjust the phase angle of the second harmonic signal relative to the fundamental. The phase angle of the fundamental is made zero when the piston is dead centre, and the phase angle of the. harmonic, and its relative amplitude, are obtained by calculation. The housing 12 also includes a lamp 34 and photocell 35 co-operating with a reflecting spot on disc 37 coupled to shaft 18 to produce one pulse per revolution of shaft 18, and a further pulse generator (not shown) produces one pulse per degree of revolution. Each resolver 21a 21b has two perpendicular rotor windings, one of which  supplies the fundamental and second harmonic components of the volume signal (v = V sin #), and others supplying the components of the first differential of the volume signal (dv/dt=V cos #). The stator windings of the resolvers are fed with A. C., or D. C. when the output signals are also proportional to the speed N. To determine the power output of the engine the N dv/dt signal E 2  (Fig. 5) is multiplied at 60 by the N dv/dt signal E 2  (Fig. 5) is multiplied at 60 by a pressure signal from transducer 63, and the  product integrated at 66 to give N#P dv/dt, ie power, and is indicated at 67. The volume and pressure signals may be fed to an oscilloscope 75 to show their relationship visually. The apparatus may also be used to determine the power lost in the suction lines and discharge lines, or the capacity of a compressor cylinder.
Patent GB-591148-A (GB)
Title: Improvements in or relating to lifting apparatus
IPC: B66F7/24
Filed: 1944-10-26
Abstract: 591,148. Stands for vehicles. JESSUP, B. R., DAMREN, S. N., and RICHARDSON, H. D. Oct. 26, 1944, No. 20896. [Class 79 (iii)] A collapsable ramp for use in raising the wheel of a vehicle comprises an elongated ramp plate, means for supporting one end of the ramp plate above the ground so that the wheel of a vehicle may be rolled up said ramp plate, and means whereby, upon said wheel reaching the upper portion of said ramp plate, said supporting means are adapted to be automatically collapsed so that said wheel can be driven forwardly straight off the ramp plate on to the ground. In the embodiment shown, the ramp plate 1 is supported by legs 2 pivoted by pins 9 on the ramp walls 8. When a wheel is to be changed, it is run up the ramp and the vehicle braked whilst a strut 4, Fig. 7, is located beneath its axle 5. The legs 2 are now collapsed whereby the axle is lowered on to the strut and the wheel may now be changed. The ramp in raised position is now inserted beneath the new wheel and the vehicle moved so as to roll the wheel up the ramp, and the strut 4 moved clear. At the top of the ramp the wheel depresses a plate 10 so as automatically to to unlock the legs 2 and permit these to collapse, and the wheel is then driven straight off on to the ground. The legs are normally locked by two rods 11 which at one end engage in holes 12, 13 in the legs 2 and walls 8, respectively, and at the other end abut against the opposite sides of a cam 14 mounted on a rod 15 depending from the plate 10. When this plate is depended against its spring 16 the cam moves downwardly clear of the rods 11, Fig. 5, which then move inwardly under the influence of springs 17 and thus are withdrawn from the holes 13 in the legs 2 which are then free to collapse. When the legs are again moved to their operative positions, the rods 11 engage surfaces on each side of the cam 14 and are forced outwards against the springs 17. Just before reaching their operative position, the rods emerge from the holes 12 and press against the walls 8. Further movement of the legs is now possible on account of the rods 11 being contractible, each comprising telescopic portions 19, 20, the portion 20 carrying a pin 21 sliding in a slot 22 in the portion 19, the latter housing a spring 23. The Provisional Specification describes also an embodiment in which a plate, hinged at one end to the side of the ramp, may be turned so as to lie across the ramp with its free end overlying and resting on the upper end of a plunger. On a wheel passing over the plate, the plunger is pressed down and automatically liberates a link from a pin or stud to allow the ramp to collapse.
Patent GB-302191-A (GB)
Title: Improved manufacture of ethers of carbohydrates
IPC: C08B11/02
Filed: 1927-08-09
Abstract: 302,191. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ces.). Aug. 9, 1927. Carbohydrate ethers of high molecular weight of the formula (C6H10O5)x, such as starch, are prepared by allowing alkylating agents to act in the form of gas or 'vapour, diluted or not with another gas, on the semi-moist carbohydrate in the presence of alkali and at a high temperature. The proportion of alkali is less than that of 20 molecules to 1 molecule of carbohydrate calculated as C6H10O5, and the alkali may be concentrated by withdrawing water from it, with or without simultaneous addition of alkali. The mass to be alkylated and the alkylating agent may be contained in separate vessels which are continuously or intermittently in communication with each other, the vessel containing the mass being at a temperature some degrees higher than that of the other vessel. In an example starch is kneaded with caustic soda solution and treated with methyl chloride gas giving a product which forms an adhesive for paper and cardboard. Specification 275,660, [Class 2 (ii), Cellulose &c.], is referred to.