baber/WOPTO huggingface dataset:
Patent GB-1137273-A (GB)
Title: Improvements in and relating to the production of methyl vinyl ether
Inventor: NEWTON ARCHIE
IPC: B01D3/00
Filed: 1965-08-18
Abstract: 1,137,273. Process for preparation of methyl vinyl ether. IMPERIAL CHEMICAL INDUSTRIES Ltd. 1 Aug., 1966 [18 Aug., 1965], No. 35366/65. Heading C2C. Methyl vinyl ether is separated from a mixture containing methyl vinyl ether and acetaldehyde by continuously distilling the mixture in a fractionating column into which a lower aliphatic alcohol of 1 to 4 carbon atoms, suitably methanol, is fed at a point higher in the column than the feed point of the mixture, and taking off an overhead product comprising a higher proportion of methyl vinyl ether to acetaldehyde than was present in the mixture. This process may form part of a continuous production process for methyl vinyl ether by condensing methanol with acetaldehyde, separating a product comprising dimethyl acetal, unchanged methanol and acetaldehyde from water produced in the condensation, passing this product over an acetal cracking catalyst at an elevated temperature, separating methyl vinyl ether from the ensuing mixture of methyl vinyl ether, unchanged dimethyl acetal, methanol and acetaldehyde by the method indicated above, taking off the distillate overhead, and recycling a residue of dimethyl acetal, methanol and acetaldehyde taken from the bottom of the column. Preferably, all the methanol required for the condensation is introduced via the fractionating column; methanol and acetaldehyde are condensed together in the liquid phase at a temperature between 0 and 50 C. with an acid substance as a catalyst; the product of the condensation is passed over a catalyst, comprising barium oxide deposited on silica gel, at a temperature between 20 and 450 C.; the mole rate of addition of the lower aliphatic alcohol is greater than the mole rate of addition of acetaldehyde to the column; pressures between 5 and 10 atmospheres are used in the distillation; and the temperature at the base of the column is maintained at about the boiling point of methanol.
Patent GB-1079066-A (GB)
Title: Multi-cylinder internal-combustion engine,more particularly for motor vehicles, withturbo-charger
IPC: F02B37/18
Filed: 1964-08-28
Abstract: 1,079,066. Supercharged L C. engines. MASCHINENFABRIK AUGSBURG-NURNBERG A. G. Aug. 28, 1964 [Sept. 3, 1963], No. 35406/64. Heading FIB. A by-pass pipe 13 from the exhaust pipe 7 of a turbocharged engine to the turbine exhaust 10 is controlled by an eccentrically mounted butterfly valve 14 urged closed by a weighted arm 15. In Fig. 2 (not shown) each exhaust pipe (16), (17), of separate'groups of cylinders has a by-pass pipe (18, (19), joined to a common by-pass (20) in which the valve (21) is mounted. Alternatively the pipes (18), (19) may be separate and have separate valves therein.
Patent GB-892386-A (GB)
Title: Pessary, particularly a uterus pessary
IPC: A61F6/08
Filed: 1959-10-20
Abstract: A cap pessary comprises an outer, impervious rubber cap with a sponge rubber or plastic lining.  The latter is coated with a wax, which melts at body temperature, mixed with a chemically-active agent such as sodium laurylic sulphonate, oxychinoline sulphate or nonyl phenoxy polyetoxy ethanol.
Patent GB-411548-A (GB)
Title: Improvements relating to variable speed gears
IPC: F16H63/30
Filed: 1932-12-15
Abstract: 411,548. Variable-speed gearing. JULIEN, J. D., 102, Attwood Road, Didsbury, Manchester, and SAMPSON, J. H., 397, Fulwood Road, Sheffield. Dec. 15, 1932, No. 35535. [Class 80 (ii).] In variable-speed epicyclic gearing having drums or internally-toothed annuli held by brake-bands 2 operated separately by pumped oil, controlled by a common rotary or sliding distributing-valve, there is associated with each drum a pair of opposed pistons 6, which act on the brake-bands through separate levers 7, 7 fulcrummed on fixed lugs 8, integral with or carried by the piston-cylinders 5. These cylinders are formed in the gear-casing. The brake-bands may be single or, as shown, formed of two superposed resilient bands 2, 2<a>, having lugs 26 engaging, with play, recesses in the casing, so as to have a self-centering effect. The rotary distributing-valve 12 turns in a cylindrical housing 11 in the casing, and has a central bore 13 supplied with pressure oil pumped from the casing through a casing-duct 20, and a peripheral groove 22 and radial duct 23 in the valve 12. As the valve is turned, selectively-positioned radial ducts 14 therein put the brake-cylinders 5 into communication with the pressure-bore 13 through ports 10. Also registering with the ports 10 are peripheral grooves 15 extending almost completely around the valve-member 12, so that when one pressureport 14 moves into register with the cylinderport 10 all the other ports 10 communicate with exhaust, through grooves 15 and ports 16. The ports 16 of the upper two cylinders in Fig. 2 lead through a duct 17 to an annular chamber 18, the lower two leading through a duct 17<a> to a second annular chamber 18<a>, both chambers communicating with the casing through ports 19. A pressure relief comprises a spring-loaded piston valve, Fig. 3 (not shown), between the inlet-port 20 and exhaust-port 17. The distributing-valve may be a flat or tubular sliding- member. The Provisional Specification refers also to the use of single spring-returned pistons, to the use of engine-suction instead of oilpressure, and states that springs may be inserted between the casing-recesses and the brake-band lugs 26 to apply a lateral pressure to the bands.
Patent GB-1187646-A (GB)
Title: Improvements in Gas Filtration Apparatus
Inventor: LUHN HANS
IPC: B01D46/02
Filed: 1967-08-03
Abstract: 1,187,646. Gas filter. LUFTTECHNISCHE ANLAGEN DRESDEN, VEB. 3 Aug., 1967, No. 35608/67. Heading B1T. A cloth filter bag 20 is stretched over a supporting framework 19 with its open mouth folded round and tucked inside elongated frame 15 and retained by hooks 22 therein. A U-shaped main strut 17 extends up from the ends of frame 15 and along the top of framework 19, and vertical, outwardly bowed rods 16 connect the sides of frame 15 with the upper horizontal section of strut 17. Horizontal struts 18 extend between rods 16 in zigzag fashion (Fig. 2, not shown). A series of such assemblies are located in a common housing, their open ends located in respective ducts 6. The two ends of each duct 6 are closed alternately by valves (8, 9), connected by a rod 7, actuated by solenoid 13 and suspended by members (10). The valves open into respective filtered gas outlet channel (11) and reverse-flow gas inlet channel (12) (Fig. 1, not shown). Channel (11) is connected to suction means, channel (12) may be open to atmosphere or to pressurised gas supply. The reverse-flow cleaning expands the bags, generating additional gas flow therebetween to flush dust away from outer surfaces, dust falling down into chamber (14), between ducts 6. Bags are cleaned individually or in groups by common control system.
Patent GB-952638-A (GB)
Title: Process for the continuous manufacture of high grade acrylic fibers at low cost
IPC: D01F6/18
Filed: 1960-10-18
Abstract: In a continuous process for the manufacture of acrylic fibres, acrylonitrile is added to an aqueous solution comprising 50-60% by weight zinc chloride, together with another, different neutral vinyl monomer and, if desired, an acidic or basic monomer, so that the sum of the neutral monomer and the acidic or basic monomer is 8-12% of the total monomers, and the resulting solution is subjected to continuous solution-polymerization under super-atmospheric pressure to keep any foams out of the solution and spun at room temperature into a coagulating bath comprising aqueous zinc chloride of not more than 20% by weight concentration and the spun tow is then stretched at least 8 times the original length and heat-relaxed by at least 20%. Specified neutral monomers include methyl acrylate and acrylamide, basic monomers include N-vinyl 2-(b -hydroxyethyl)-imidazole, N-vinyl 4-(b -hydroxyethyl) - imidazole, N-vinyl -2- methyl -4- (b -hydroxyethyl)-imidazole, N-vinyl -4-(b -acetoxyethyl) - imidazole, N-vinyl -4-(b -acetoxyethyl) - imidazole, N-vinyl -4- (b -methoxyethyl) - imidazole, and N-vinyl -4- methyl - imidazole, and acidic monomers include vinyl sulphonic acid, acrylic acid, alkyl sulphonic acid, and styrene sulphonic acid, and their soluble metal salts. As polymerization medium there may be used a mixture of 50-60% by weight aqueous zinc chloride solution and sodium chloride, the same mixture, diluted with water to a zinc chloride concentration not exceeding 20% by weight, being used as the coagulating bath. Alternative polymerization media include mixtures of 50-60% aqueous zinc chloride with an alcohol or with acetic acid. Solution-polymerization may be effected under 1-5 atmospheres pressure, the apparatus being completely filled with the reaction mixture.  Conventional catalysts are used for the polymerization e.g. persulphates and organic peroxides.
Patent GB-343959-A (GB)
Title: Improved roller for rolling roads and other surfaces
IPC: E01C19/26
Filed: 1929-11-22
Abstract: 343,959. Road rollers &c. ARNOLD, A. T., Brick House Farm, Kelvedon, Essex. Nov. 22, 1929, No. 35729. [Class 6 (i).] In order to flatten upstanding irregularities in the surface being rolled, a road or like roller comprises three rollers, or sets of rollers, arranged one behind the other and all on the same level when the roller is in operation and horizontal, the intermediate roller being adjustable vertically. The roller shown comprises two rigid side members 10 carrying fixed bearings 11 for a rear axle 12 on which two rollers 14 are mounted. The bearings 15 of the axle 16 of a central pair of rollers 29 is adjustable vertically in guides 17 on the frame members 10 by means of a screw 18, a screwed toothed wheel 19, worm gearing 20, a shaft 21, a sprocket chain 23, a shaft 25, and a hand-wheel 26. The front steering rollers 31 are mounted in a turnable stirrup 33. The pairs of rollers 14, 29 are driven from an engine 35 through two transverse shafts connected by clutches to bevel wheels 39 on opposite sides of the roller. The bevel wheels 39 drive the rollers 14, 29 through bevel and worm gearing, as shown. The gearing for driving the intermediate rollers may be moved out of gear when those rollers are raised for travelling purposes. For going round curves the rollers 14, 29 on either side may be thrown out of gear by means of the clutches. The power of the engine may be employed to raise the rollers 29. Specification 230,131, [Class 6 (i), Cultivating implements &c.], is referred to.
Patent GB-1048849-A (GB)
Title: Improvements in sewing machines
Inventor: LESLIE IVAN ALEXANDER
IPC: D05B73/00
Filed: 1964-09-02
Abstract: 1, 048, 849. Sewing machines. SINGER CO. Aug. 31, 1965 [Sept. 2, 1964], No. 35835/64. Heading D1G. In a sewing machine, an extremity of either the arm shaft or the bed shaft is journalled in a bearing supported by a plate or the like detachably secured to the sewing machine frame. As shown, a vertical plate 25, secured by screws 26 to the frame 10 inside the standard 13, is formed with cup-like portions 22, 28 co-operating with caps 51 to support spherical bearings 21, 27 for the upper and lower shafts 18 and 15 respectively. The front end of the upper shaft is journalled in a spherical bearing 21 supported by a cup-shaped portion 22 of a vertical web 23 integral with the frame, and a co-operating cap 51. The front end of the lower shaft is journalled in a casing 29 which houses the looptaker and feed mechanisms and which is connected at opposite sides to the adjacent walls of the frame by respective resilient sleeves. Shafts 15 and 18 are interconnected by a belt 19 driven by a motor 20. In a modification, Fig. 3 (not shown), the standard end of the upper shaft is journalled in a plain bearing 38 supported by a member 40 formed on or attached to the frame. The standard end of the lower shaft is journalled in a spherical bearing 39, adjustably secured to a plate 46 attached to the frame by screws 48.
Patent GB-772230-A (GB)
Title: Improved vehicle suspension
IPC: F16F7/00
Filed: 1955-12-15
Abstract: 772,230. Spring suspensions: vibration dampers. GENERAL MOTORS CORPORATION. Dec. 15, 1955 [Dec. 30, 1954], No. 36009/55. Classes 108(2) and 108(3). A vehicle suspension comprises a wheel 18 suspended from a frame 2 by a pivoted control arm 6 which supports a dynamic absorber abutting on air springs 22 mounted on the frame. As shown, in which the wheel is also supported by an upper control arm 4, a rigid cup-shaped member 20 defining the air spring 22 is attached to the frame 2 and is closed by an annular resilient diaphragm 28 which is bonded to one end of a closed cylinder 34 of the dynamic absorber which also constitutes a piston for the air spring. The other end of the cylinder 34 is pivotally connected through a boss 38 with the control arm 6. A weight 46 is slidably mounted on a rod 44 within the cylinder and is resiliently centred therein by springs 48, 50. A diametral clearance is provided between the weight and the cylinder to control passage of air from one end of the cylinder to the other and thereby the degree of damping during operation of the suspension. In a modification the air spring may be arranged to be abutted by a downwardly directed absorber on the upper control arm 4.
Patent GB-850979-A (GB)
Title: Improvements in or relating to methods of fastening and locking blades of turbines, compressors and like machines
IPC: F01D5/30
Filed: 1957-11-19
Abstract: 850,979. Securing turbine and compressor rotor blades. SZYDLOWSKI, J. Nov. 19, 1957 [Nov. 27, 1956], No. 36049/57. Class 110 (3). The invention relates to an arrangement for preventing endwise movement of turbine or compressor rotor blades mounted in axiallyextending slots formed at the periphery of the rotor disc. The blade-mounting slots are formed with serrations 3 also with a groove 4 which provides a passage beneath the blade root 5. A pair of flat locking members 6 each formed with a bent head portion 7 is entered into the passage 4, the head portions 7 of the two members extending in opposite directions and a washer 8 being disposed between the head portions and the adjacent surfaces of the blade root and rotor disc. A second washer 8 is inserted on the opposite ends of the locking members which are then bent in opposite directions thereby locking the blade against endwise movement. Locking keys may alternatively be of semi-circular section with their flat sides abutting.
Patent GB-1346748-A (GB)
Title: Process for the production of alpha-amino-acyl penicillins
IPC: C07D499/12
Filed: 1972-08-02
Abstract: 1346748 Preparing α-aminopenicillin esters LABORATOIRES PHARMEDICAL SA 2 Aug 1972 [6 Aug 1971] 36090/72 Headings C2A and C2C α-Amino-acyl penicillin esters having the general Formula (I) and salts thereof, wherein R<SP>1</SP> is an alkyl group, a group -CH 2 -OR in which R is an alkyl group, or a group -CH 2 OAc in which Ac is an acyl group derived from a straight or branched chain aliphatic carboxylic acid; and R<SP>2</SP> and R<SP>3</SP> are the same or different and each is a hydrogen or halogen atom or an alkyl, alkaryl, methoxy, ethoxy, sulphamide or heterocyclic group; are prepared by (i) salifying the free carboxyl group of 6-aminopenicillanic acid; (ii) reacting the resulting salt with a compound YR<SP>1</SP> wherein R<SP>1</SP> is as defined above and Y is halogen; (iii) N- acylating the resulting 6-aminopenicillanic acid ester with a mixed anhydride of an amino acid enamine derivative of formula in an apolar organic reaction medium, R<SP>2</SP> and R<SP>3</SP> being as defined above, R<SP>4</SP> being a methoxy, ethoxy, benzoyl or acetyl group, and R<SP>5</SP> being an aliphatic acid anhydride residue; and (iv) hydrolysing the product to convert the enamine group into a free amino group. The 6-aminopenicillanic acid salt is preferably that of an organic amine, e.g. quinoline or triethylamine. Suitable solvents in stage (iii) are chlorohydrocarbons, acetone, tetrahydrofuran and acetone. α-D( - )-aminophenylacetic acid is reacted with (a) ethyl acetoacetate in methanolic KOH, and (b) methyl acetoacetate in methanolic NaOH to give respectively the potassium salt of N - (1 - methyl - 2 - ethoxycarbonyl - vinyl) - α- aminophenyl acetic acid and the sodium salt of N - (1 - methyl - 2 - methoxycarbonyl - vinyl) - α- aminophenyl acetic acid.
Patent GB-1075087-A (GB)
Title: Improvements relating to electric arc stud welding
IPC: B23K9/20
Filed: 1964-09-03
Abstract: 1,075,087. Welding by pressure. CROMPTON PARKINSON Ltd. Sept. 3, 1964 [Sept. 3, 1963], No. 36124/64. Heading B3R. [Also in Division B8] A device for fitting to a portable electric arc stud-welding tool for loading studs into the chuck of the tool comprises a magazine formed with a guide track for studs, means for feeding studs along the track into a position in front of the chuck and in axial register with the chuck and mechanism for moving a stud rearwardly from the position of register into the chuck. In one embodiment a stud loader 12, Fig. 1, has a yoke 24 by which it is pivoted to an adjustable foot 18 on the tool 10. The foot is carried on legs 20 and supports a ferrule 16 through which the chuck 14 projects. The loader 12 includes a magazine 26 in which studs are stored with their enlarged heads engaging grooves in guide rails and the studs are pressed downwardly by a block also engaging the guide rails and acted on by a removable pin connected to a flexible spring strip. The magazine is removably connected to a guide head 28 fixed to the yoke 24 and having guide rails forming extensions of those in the magazine. A plunger 30 extending through an aperture at the foot of the guide head comprises a head urged outwardly by a spring and a plunger rod having a bifurcated end normally located beneath the guide rails in the guide head and containing the shank of a stud. In operation with the loader in the full line position shown in Fig. 1 the plunger head is pressed against the workpiece and the plunger rod carries a stud forward until its head is frictionally engaged in the bifurcated end of the chuck. The head is released, the spring returns the plunger and the next stud is pressed down into the bifurcated end of the plunger. The loader is then pivoted back until it assumes the dotted line position of Fig. 1 where it is held by a magnet 48 until after the welding operation. In a modification, a hand-operated lever (132), Fig. 9 (not shown), is pivoted to the yoke to allow the studs to be loaded into the chuck by pressing the lever, one end of which acts on the plunger. In a further modification the loader is completely separate from the tool having a handle to allow carrying and location and a guide member fixed to the guide head to receive the ferrule.
Patent GB-454087-A (GB)
Title: Improvements relating to the permanent waving of hair
IPC: A45D4/06
Filed: 1934-12-17
Abstract: 454,087. Electric hair - wavers. EVANS, W. E., 27, Chancery Lane, London.- (Suter, E. F. ; 9, Rue d'Athenes, Paris) Dec. 17, 1934, No. 36203. Drawings to Specification. [Class 39 (iii)] In apparatus for the permanent waving of hair, such as that described in Specifications 433,290 and 433,351, comprising an absorbent material enclosed between two sheets of metal and wrapped round the tress, so that when the absorbent material is moistened with an electrolyte it acts as a heating resistance, the metal sheets forming the electrode, a layer of absorbent material is attached to the inner face of the inner electrode and moistened with solution for treating the hair. One of the electrodes may be made of aluminium so that the device serves as a rectifier for alternating current. The sachet thus formed may be wrapped round the hair or may be made in tubular form as described in Specification 444,757. It may also be adapted for " croquignole " waving as described in Specification 450,084, [Group XIV]. The inner electrode may be perforated so as to allow vapour generated in the electrolyte to pass to the hair, or may be impervious. The inner absorbent layer may also have a perforated covering. The outer electrode is preferably attached to the whole assembly, but may be made separate and wrapped round the sachet after it has been applied to the hair. The same liquid may be used in both absorbent layers, in which case they may be made from a continuous sheet of material.
Patent GB-180711-A (GB)
Title: Improvements in and relating to motor vehicles
IPC: B60G9/02
Filed: 1920-12-24
Abstract: 180,711. Alexander, A. E., (Three Point Truck Corporation). Dec. 24, 1920. Frame components, applying and combining; three-point suspension; axle distance members and radius-rods and torque-rods.-In a motor vehicle undercarriage of the three-point-suspension type, the frame rests freely on springs between the frame and axles, a thrust element 24, Fig. 1, is pivoted to the ends of the rear axle and by a universal joint to the centre line of the frame, and the driving-shaft is provided with a flexible joint 19 close to the universal joint, the driving-shaft being parallel to the plane of the thrust element. The front of the frame is pivoted on a vertical member slidable in a guide on the front axle and secured to the centre of a cross leaf spring, the ends of which bear on the ends of the front axle. Leaf springs 7 are attached to the rear axle at their centres and carry the frame on their free ends while coil springs 8 are disposed between the frame and the axle. The rear triangular structure 24 comprises two side members and a central longitudinal member 23, Fig. 4, each pivoted on the rear axle. The member 23 is connected to the frame 2 by a ball-and-socket joint 26. The members 42 of the front triangulated structure are secured to the front axle and are pivoted to the frame by a similar ball-and-socket joint 43. The torque-rod 30 is pivoted to the frame and the rear axle by ball-and-socket joints 31, 29. The cross members 27, 32, 44 of the frame are slid vertically into liners 35 slidable longitudinally in the frame 2, and both are secured by bolts 36.
Patent GB-1124559-A (GB)
Title: Improvements in or relating to devices for controlling thyristors
IPC: H02M1/092
Filed: 1967-08-08
Abstract: 1,124,559. Thyristor firing circuits; rectifying. COMPAGNIE GENERALE D'ELEC TRICITE. 3 Aug., 1967 [23 Aug., 1966], No 36278/67. Heading H2F. [Also in Division H3] Thyristors Th 1 p, Th 1 ,p -1  &c. connected in series are fired by passing an alternating firing signal through a cascade of transformers Tr 1 p -1 , Tr 2  &c., the input to the first transformer and successive secondaries being connected through a rectifying circuit, Dp, Dp -1  &c. to the gate of a corresponding thyristor. If the alternating firing signal generator G provides oscillations of high frequency, phase delays do not materially affect the firing time. The thyristors referred to are the first in each of a series of groups, the others in the group are fired by additional windings on the next transformer (Fig. 4, not shown). The oscillation generator may be switched via a transformer 1 or by a light or electromagnetic radiation source 2. The Specification also described a known circuit in which the firing of each transistor fires the next in the chain (Fig. 1, not shown).