baber/WOPTO huggingface dataset:
Patent GB-1280656-A (GB)
Title: Reactance circuit
IPC: H03C3/24
Filed: 1969-11-18
Abstract: 1280656 Active reactances WANDEL U GOLTERMANN 18 Nov 1969 [27 Nov 1968] 56306/69 Heading H3R An active reactance of the type comprising a transistor with two electrodes excited in quadrature is characterized in that the transistor is a double-gate FET with a control signal applied to one gate, and the phase shift network connected to the other. In one embodiment, the resistive arm of the potential divider comprises two transistors 10, 11 connected as a current source. Reference has been directed by the Comptroller to Specification 1,109,891.
Patent GB-1391000-A (GB)
Title: Electrical balance assemblies
IPC: G01G23/36
Filed: 1972-12-07
Abstract: 1391000 Digital weighing apparatus METTLER INSTRUMENTE AG 7 Dec 1972 [27 June 1972] 56577/72 Heading G4H [Also in Division G1] Weighing apparatus comprises a load carrier and a comparator 23 for comparing a predetermined threshold range with signals corresponding to oscillations of the load carrier about its rest position, a digital weight measurement being provided only when the measurement values lie within the range for the duration of at least one measuring period. The balance 10 which may be similar to that described in Specifications 1,324,499 or 1,331,737, is connected to a control circuit 11 which supplies an analogue weight signal to a digital voltmeter 12 of the dual ramp type and a balance condition monitor 14. The monitor 14 includes a differentiating circuit 17 and an integrating circuit 19, the outputs of which are compared in the comparator 23 with the range values from a reference voltage source 22. A store and time delay formed by flip-flops FF1, FF2 and FF3, FF4 receive measurements period establishing clock pulses A and only enable a digital measurement to be provided by the voltmeter 12 and transferred to a store 13 when the oscillations of the balance do not lie outside the predetermined threshold range. An acoustic device or an optical signal lamp 12a indicates when the balance is within the range.
Patent GB-1184347-A (GB)
Title: Improvements in or relating to Dark Glasses
Inventor: YAU HORN-FENG
IPC: G02C7/10
Filed: 1966-12-20
Abstract: 1,184,347. Moulding sunglasses. HORNFENG YAU. 27 Feb., 1968 [20 Dec., 1966], No. 56884/66. Heading B5A. [Also in Division G2] A pair of e.g. sunglasses or welders glasses has its frame 1 and lens portions 3 formed as a single integral unit from transparent coloured thermoplastics material by a moulding process. The lens portions are thinner than the frame which thus appears darker than the lens portions. Bosses 4 are provided for receiving a hinge pin 5 to receive side pieces 7. The spectacles may be made of polystyrene, or of a polyvinyl material, or of acrylic resin.
Patent GB-1245820-A (GB)
Title: Method of forming electrically insulating film on aluminium or aluminium base alloys by anodic oxidation
Inventor: SUZUKI TAKASHI
IPC: C25D11/04
Filed: 1968-12-03
Abstract: 1,245,820. Anodizing Al and Al base alloys. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. Dec. 3, 1968, No. 57391/68. Heading C7B. Al or an Al base alloy is anodically oxidized to form an electrically insulating film thereon using a voltage such that spark discharge occurs at the anode, while intensely agitating the electrolyte, the ratio of the surface area of the cathode to the surface area of the anode being at least 10:1. The voltage may be between that at which spark discharge begins and 50 volts thereabove. The electrolyte may be sulphuric, chromic, oxalic or phosphoric acid. The Al may be in the form of a wire or strand.
Patent GB-1201340-A (GB)
Title: A liquid cooled rotor of an electric machine with a liquid-cooled rotor winding
IPC: H02K3/22
Filed: 1967-12-20
Abstract: 1,201,340. Cooling rotors. LICENTIA PATENT-VERWALTUNGSG.m.b.H. 20 Dec., 1967 [28 Dec., 1966], No. 57896/67. Heading H2A. A rotor for a turbo-generator has a liquid cooled winding employing hollow conductors where the coolant supply to the centre of each end winding connection is provided by a tube which runs from an admission chamber along the rotor shaft towards the core and bends through 180 degrees to run in the reverse axial direction spaced from the shaft and under the winding overhang and is shaped to meet the connection point with the winding as a circumferential arc. The exhaust connection to a collecting chamber at the other end of the rotor is similarly formed. Coolant flows into arcuate admission chambers 10, (13) from bore 47 at the exciter end of the rotor shaft. Connected to chambers 10, (13) is a plurality of tubes 21 which lie in axial slots 23 and are bent back on themselves at 27 to lie in the surface of a cylinder 28 before being bent to connect with coil ends 51 at 31, Fig. 5. The tube 21 may be in one piece with resilience provided by bend 27 and the bend adjacent the coil ends, but additionally a flexible connection 20 may be provided. On entry to coil end 51 the coolant flow divides to pass along the coil conductors until it recombines at the turbine end of the machine and enters annular collection chamber 33 which is connected to the coils by a similar arrangement of tubes. Liquid in chamber 33 is returned along pipes 35 which are bent to lie in pole face slots 39 of the rotor before entering return chambers 15 which are situated in the diametral pole plane between the admission chambers. Liquid is withdrawn through bore 17 in the shaft. At the exciter end of the machine the return pipe 40 is carried in a deep slot under the slip ring lead 41.
Patent GB-1452524-A (GB)
Title: Device for rotating or twisting a pipe
IPC: E21B19/16
Filed: 1973-12-19
Abstract: 1452524 Screwing up and unscrewing pipes WEATHERFORD OIL TOOL GmbH 19 Dec 1973 [19 Dec 1973] 58943/73 Heading B3N [Also in Division E1] A device for rotating a pipe 10 comprises a ring gear 1 coupled to a drive pinion 2 and coaxially disposed between two annular guide plates 6, the ring gear and guide plates each having a cut-out portion 3, 13 of the same width, clamping jaws 9a, 9b radially movable relative to the guide plates for gripping the pipe, cams 7a, 7b arranged on the inside of the ring gear for displacing the clamping jaws inwardly into engagement with the pipe, each cam and its respective clamping jaw being at a different axial location so that each cam can only contact its respective clamping jaw, and means (20, 22), Fig. 6 (not shown), for centring the pipe within the ring gear with the cut-out portions of the ring gear and guide plates aligned. The ring gear is rotated through 180 degrees relative to the guide plates to form a closed rigid ring-shaped structure and to cause the clamping jaws to grip the pipe; subsequent rotation of the ring in the same direction rotates the pipe. The alignment of the cut-out portions 3, 13 in the ring gear and guide plates with a cut-out portion (40) in an outer casing (31) for initial fixing of the device around the pipe, the locking of the guide plates with the ring gear after rotation of the ring gear through 180 degrees in a selected direction to form the closed ring structure, and the subsequent rotation of the pipe in the same direction are achieved by means of slidable bolts (36 and 38), Fig. 3 (not shown), in one guide plate 6 and the ring gear respectively, cam surfaces (32) mounted on the interior of the casing, and stop bushes (34) slidably receiving the bolts (36).
Patent GB-1163237-A (GB)
Title: Improvements relating to Door Fittings
Inventor: NIILOLA ARMAS KALERVO
IPC: E05B67/38
Filed: 1967-12-29
Abstract: 1,163,237. Releasable fastenings. A. K. NIILOLA. 29 Dec., 1967, No. 59038/67. Heading E2A. A pair of fittings for a padlock intended to be mounted respectively on a door 6 and a frame 5 for the door have parts which protrude from the door and frame when fitted, the parts having openings 7, 8 for the shackle of the padlock, the part of one fitting having a guiding flange 9 extending in use towards the other fitting and having a shape conforming to the contour of the part of said other fitting. As shown each fitting is composed of two plates 1, 2 and 3, 4 placed one upon the other, the guiding flange 9 being formed by bending the edge portion of the outer plate I of the one fitting over the edge of the other fitting. In each fitting the edge portion of both plates which encircle the opening is bent out to form an annular flange although in a modification only one plate of each fitting is so bent.
Patent GB-1285447-A (GB)
Title: An attachment enabling some of the weight of an implement being trailed by a tractor to be applied to the wheels of the tractor
Inventor: FARRANT DAVID JOHN
IPC: A01D67/00
Filed: 1968-12-13
Abstract: 1285447 Weight-transfer connections between implements and tractors D J FARRANT 12 Dec 1969 [13 Dec 1968] 59462/68 Heading A1P An agricultural implement, e.g. a trailer 21 is connected to a tractor by means of a tractor attachment comprising a bifurcated bracket 11 attached at 16 to the lower lift links and to a hydraulic ram 17 (replacing the upper lift link), the bracket 11 having a post 13 over which is fitted a ring 24 on a chain 22 fastened to the trailer, so that part of the trailer weight is transferred to the tractor rear wheels on retraction of the ram 17. The ring 24 will slip off the post 13 to prevent the tractor from overturning backwards, should the towpin 26 fail. The angle of the post is adjustable. The rams 17 and 18 are retracted to lift the tow bar 23 for connection to the towing plate 25, with the chain 22 in the full-line position; the chain 22 is placed in the chain-dotted position for towing. Two or three implements operating in parallel may be coupled by chains to points spaced along a yoke 31 which itself is coupled to the chain 22, to enable the implements to be turned without fouling each other.
Patent GB-1402610-A (GB)
Title: Process for the production of polyethers which contain carboxylic  acid esters groups and their use for the production of poly urethanes
IPC: C08G18/42
Filed: 1972-12-22
Abstract: 1402610 Preparing polyethers BAYER AG 22 Dec 1972 [23 Dec 1971] 59476/72 Heading C3R A polyether which contains carboxylic acid ester groups and which is free from aromatic radicals is prepared by heating to above 120‹ C. in the presence of an etherification catalyst a polyhydroxyl compound of the formula wherein R is a divalent C 2-18  aliphatic radical, a C 4-14  cycloaliphatic radical or a divalent radical of a polyester of molecular weight 100-10,000 which radical, which is free from aromatic radicals has been obtained by the removal of terminal carboxylic acid groups or carboxylic acid ester groups, R<SP>1</SP> is hydrogen or a C 1-6  alkyl radical and n is 1 or 2. Preferred polyhydroxyl compounds are Preferred catalysts are sulphonic acid and organic sulphonic acids, e.g. benzene sulphonic acid. The polyhydroxyl compounds used as starting materials in the examples are (a) a polyester of ethylene glycol and adipic acid, (b) a polyester of 1,2-propylene glycol and adipic acid, (c) an ester of adipic acid and diethylene glycol and (d) the reaction product of ethylene oxide and polyesters derived from (i) ethylene glycol and adipic acid, (ii) neopentyl glycol and adipic acid and (iii) 1,6-hexanediol and adipic acid.
Patent GB-1183799-A (GB)
Title: A Clock Case.
Inventor: DIEHL KARL
IPC: G04B47/04
Filed: 1968-12-17
Abstract: 1,183,799. Clocks. K. DIEHL. Dec.17, 1968 [Jan. 10, 1968], No. 59901/68. Heading G3T. A clock case has a frame 1 having means for mounting a support plate 4 or 12 for the clock mechanism 6, a dial 9 Fig. 1 (not shown) or 13, and a transparent cover 8 or 15, the mounting means being so arranged that the front of the clock may be at either side of the frame 1. In a further embodiment the support for the clock mechanism is fanshaped and has a flange forming an annular dial to which a glass cover-plate is secured by screws the heads of which serve as hour marks.
Patent GB-1237225-A (GB)
Title: Central heating systems
Inventor: MALMSTROM KARL GUNNAR
IPC: F24D3/10
Filed: 1968-12-17
Abstract: 1,237,225. Central heating systems. K. G. MALMSTROM and R. H. D. CARLSON. 17 Dec., 1968 [22 Dec., 1967], No. 59957/68. Heading F4U. A central heating system comprises a heating circuit 5 which includes a boiler 1 and pump 4, and a safety pipe 6 extending from the heating circuit to a vessel 7 above the circuit, vessel 7 being provided with an overflow pipe 9 leading to an expansion vessel 10 from which water is continuously pumped (through pipe 18) back to vessel 7 to maintain a constant level therein. Vessel 10 has an overflow 11 and is supplied with make-up water, under the control of valve 13, when the water level therein falls below a predetermined value. Vessel 7 communicates with the atmosphere via pipe 8 and contains a partition (Fig. 2, not shown) which shields the ends of pipes 9 and 18 from atmosphere.
Patent GB-1375170-A (GB)
IPC: C07C49/697
Filed: 1971-12-23
Abstract: 1375170 Indonecarboxylic acid derivatives TAKEDA YAKUHIN KOGYO KK 23 Dec 1971 [29 Dec 1970 6 May 1971] 60022/71 Heading C2C The invention comprises compounds of formula and their alkyl esters, amides and metal salts, wherein R<SP>1</SP> is H or halogen, and a process for making them by reducing the corresponding oxocyclohexyl analogues (A), optionally followed (where R<SP>1</SP> = H in the product) by halogenation. Other exemplified methods of preparation are:- making an amide from the methyl ester, with NH 3 ; esterifying the acid with CH 2 N 2 ; hydrolysing methyl esters; salt formation; separation of stereoisomers; and perfusion through mamalian liver, of an (unsubstituted-cyclohexyl) analogue. Intermediates otherwise prepared are the ethyleneketals and a semicarbazone of cyclohexanones (A); the following ketones and their ethyleneketals:-4-(oxocyclohexyl)benzyl chlorides and cyanides, 4-(oxocyclohexyl)phenylsuccinic acids; 4-(oxocyclohexyl)phenylsuccinic anhydrides; the alpha-cyano derivatives of 4- (oxocyclohexyl)phenylacetic and -succinic acids, ethyl esters, ethyleneketals; methyl 5-(4- oxocyclohexyl)indane- 1 - carboxylate, ethyleneketal; and 5-(oxocyclohexyl)-3-oxoindane- 1-carboxylic acids. Therapeutic compositions for oral, parenteral or rectal administration comprise the above acids, esters, salts and amides, which have antiinflammatory, analgesic, antipyretic and antirheumatic activity.
Patent GB-1332825-A (GB)
Title: Process for the preparation of hydrocarbon coatings and coating obtained by this process
IPC: C08L21/00
Filed: 1970-12-17
Abstract: 1332825 Bituminous composition COMPAGNIE FRANCAISE DE RAFFINAGE 17 Dec 1970 [17 Dec 1969] 60051/70 Heading C3N A method for the preparation of hydrocarbon coatings comprises mixing an aggregate of particle size greater than 80Á, a filler of particle size less than 80Á, a hydrocarbon binder and hard asphalts, the aggregate and the hydrocarbon binder being pre-heated, and the hard asphalts being in the form of non pre-heated powder the size of which does not exceed the size of the first part of the aggregate. In a modification the hard asphalts are precipitated round the filler before mixing this latter with the binder and aggregate. The precipitation of the hard asphalts may be effected by adding nhexane to a suspension of the filler in an aromatic solution of asphalts. The hard asphalts are defined as materials rich in asphaltenes of which the proportion of insolubles in carbon disulphide or cyclohexane is not more than 30% by weight and of which the asphaltene content is at least 50% by weight. The hard asphalts may be natural asphalts reduced to powdered form or the insoluble part in n-heptane, n-hexane or light petroleum of a propane.deasphaltation tar, a vacuum distillation residue, an atmospheric distillation residue of crude petroleum, or a bituminous oxide. The hydrocarbon binder is derived from coal or petroleum and may be bitumen. The filler may be sand, gravel, limestone, slag, lime, vulcanized rubber, or filler coke whilst the aggregate may be sand.
Patent GB-646081-A (GB)
Abstract: 646,081. Recording-apparatus ; pressure gauges. LAX, H. Feb. 16, 1948, No. 4505. Convention date, May 8, 1942. [Classes 106 (ii) and 106 (iv)] [Also in Group VI] An oscillograph includes a large sealed chamber, a small chamber positioned within said large chamber and sealed by a flexible diaphragm, indicating means actuated by flexure of said diaphragm, adjustable means manually operable externally of said chambers for adjusting the degree of movement of said indicating means with respect to the degree of flexure of said diaphragm, a fluid conduit interconnecting said chambers and means interposed in said conduit operable to control the degree of inter-connection between said chambers. As shown in Figs. 1 and 2 an oscillosphygmograph comprises a case 1 provided with a cover plate 7 from which is suspended, by supporting pillars 35, a base-plate 5 provided with a cavity 3 across which is stretched a diaphragm 4. To the centre of the diaphragm is secured a button 11 to which is hinged a rod 10 the upper end of which engages a forked arm 19 secured to an axle 18 on which is mounted a mirror 21 ; air pressure applied via pipes 24, 25 to the chamber 3 will thus cause deflection of the mirror. The response of the mirror to deflection of the diaphragm is adjusted by means of knob 38 which moves slide block 14 and rod 12 to vary the point of contact of arm 19 with rod 10. Connected to pipe 24 is a pipe 26 which leads, through a valve 27 controlled by knob 29, to the interior of the case 1 ; opening valve 27 reduces the difference in air pressure between the two sides of the diaphragm 4 and decreases the sensitivity of the oscilloscope. The complete apparatus, as shown in Fig. 5, includes a light source 53, lenses 54, a capsule 49 having a diaphragm on which is mounted a mirror 51, a recording camera 58, a removable mirror 61 for visual observation, a pressure tank 43 and a cuff 48. A further cuff may be attached to pipe 75 and a relief valve 46 is provided. Light beam A is deflected by mirror 21 which responds to pulse beats, whilst deflection of beam B by mirror 51 indicates the blood pressure.
Patent GB-657842-A (GB)
Abstract: 657,842. Inductances. AKT.-GES. BROWN, BOVERI, & CIE. March 4, 1949, No. 5996. Convention date, March 6, 1948. [Class 38 (ii)] A choking coil for heavy current moving contact converters for prolonging the lowcurrent interval at the end of the current conductive period of the contacts comprises annular iron cores b<SP>1</SP>, b<SP>2</SP> and windings consisting of concentric telescoped tubular conductors a<SP>1</SP>- a<SP>8</SP>, the iron cores being supported by the outermost conductors a<SP>7</SP>, a 8 . The cores may be of the wound strip type or may be built of a number of discs placed in a pile. The concentric tubes forming the windings are of graduated lengths so as to allow the interconnecting members C<SP>1</SP>-C<SP>7</SP> to be parallel. The ends of the tubes a<SP>1</SP>, a<SP>8</SP> may be arranged to form the connections for the coil.
Patent GB-733154-A (GB)
Abstract: 733,154. Footballs &c. CROOK & SONS, Ltd., B. March 13, 1953 [Dec. 13, 1951 ; Jan. 9, 1952], Nos. 28571/51 and 631/52. Class 132(2). A football &c. casing is made of sections each comprising leather having cemented to its outer surface one or more layers of fabric having on its or their outer surface a layer of a suitable plastic material such, as a white polyvinyl chloride composition. The fabric layers may be thoroughly impregnated with the plastic and the leather may be pre-stretched and freed from grease before the covering is applied. The outer surface of the covering may be roughened, embossed or patterned. According to the second Provisional Specification, the fabric may be dispensed with.
Patent GB-2023454-A (GB)
Title: Sieve for particle size analysis of powders
IPC: B07B1/24
Filed: 1978-06-21
Abstract: A sieve has a hollow body (1) bounded by six rectangular faces, one of which comprises a sieving surface (2). The body is rotated by means of axles (3) on an axis parallel to the sieving surface and central of the faces which the axis intersects. The sieve may be used for the analysis of particle size of a powder in conjunction with a mini-computer to monitor the rate of passage of particles through the sieving surface and to deduce the kinetic residue. Random mixing of the powder particles during rotation of the sieve may be imparted by means of rods (4), as shown, or by crumpled wire mesh or randomly packed spheres. <IMAGE>
Patent GB-2000633-A (GB)
Title: Microwave tubes incorporating rare earth magnets
IPC: H01J23/02
Filed: 1978-06-29
Abstract: Magnets 36 using rare earths (e.g. SmCo5) are more efficiently used by placing them inside the envelope of the microwave tube adjacent the location where a magnetic field is required, and shielding the magnets so that they do not heat above say 250 DEG C. The deterioration in magnetic properties with the magnets in a vacuum is much less than is observed when the magnets are in air (outside the envelope) and heated only to 125 DEG C. <IMAGE>
Patent GB-2029022-A (GB)
Title: Method and apparatus for determining the method of one liquid in the presence of another liquid
IPC: G01F23/14
Filed: 1978-08-24
Abstract: The Specification describes a method of determining a value dependent upon the amount of a first liquid such as oil in a container in the presence of a second liquid such as water having a different relative density. The method comprises the determination of electrical quantities dependent upon the pressure 20 at or near the bottom of the container due to the liquids, the total depth 22 of the liquids and their densities and using electrical calculating apparatus to calculate the height of the said first liquid from the said determined quantities. The volume of the said one liquid can then be calculated from its height and an electrical quantity dependent upon the area of the contained liquid. The mass of said first liquid can then be calculated from its density and the calculated value of its volume. The Specification also describes an apparatus for carrying out the method. <IMAGE>
Patent GB-2014968-A (GB)
Title: Article handling apparatus
IPC: B08B9/08
Filed: 1978-09-07
Abstract: The apparatus comprises a Ferris- wheel kind of structure rotating through a wash-liquid tank into which the lower half of wheel is received. The wheel has means for lodging articles in positions radially spaced from and concentric with a shaft (7) on which the wheel rotates to rotate the articles through the tank and thus wash them. The tank houses a heater (34) and ultrasonic transducers (31,33) to assist cleaning; and a recirculation of wash liquid through a filter (21) is effected by means of scoops (17) which raise liquid from the tank and decant it into a collector (18) when at position (D). <IMAGE>
Patent GB-2007119-A (GB)
Title: Studs for Building Units
IPC: E04C3/08
Filed: 1978-09-11
Abstract: A metallic stud of the kind used to serve as a spacer between the inner lining and the external cladding of a building unit is made from for example a galvanised and plastics-faced steel sheet 1 formed with two substantially parallel, spaced-apart flanges 11, 12 connected by a web 10. A plurality of slits 2 are formed, for example punched, in the web 10, these slits being spaced apart in the longitudinal direction of the web. The spacing apart of the flanges 11, 12 is then increased to form openings in the web, which openings are separated by spacers disposed substantially perpendicular to the flanges 11, 12. Each spacer is arranged to terminate at each end in a fold, the apex of which rests on the inner surface of the adjacent flange. <IMAGE>