baber/WOPTO huggingface dataset:
Patent GB-825458-A (GB)
Title: Improvements in or relating to the electrolytic coating of magnesium and magnesium alloys by anodic treatment
Inventor: DAVIES MERVIN WYNDHAM
IPC: C25D11/30
Filed: 1956-03-06
Abstract: 825,458. Anodic coating of magnesium and its alloys. GENERAL ELECTRIC CO. Ltd. Feb. 21, 1957 [March 6, 1956], No. 7073/56. Class 41. A protective coating is formed on magnesium and its alloys by anodic treatment in an aqueous bath containing 50 to 150 g/l. of sodium or potassium hydroxide, 35 to 120 g/l. of an anhydrous sodium or potassium fluoride, 1 to 125 g/l. of sodium or potassium aluminate, and 5 to 300 g/l. of a sodium or potassium phosphate. Bifluorides, aluminium hydroxide or metal, hydrogen orthophosphates, pyrophosphates or metaphosphates may be employed as the source of fluoride, aluminate and phosphate (PO 4  ...) with sufficient hydroxide to provide an excess of hydroxide. The bath may also contain 1 to g/l. of sodium or potassium chromate. Magnesium alloy cans for nuclear reactor fuel elements may be protected against attack by other non-ferrous metals and liquid and gaseous coolants.
Patent GB-1078112-A (GB)
Title: Improvements in and relating to impeller blades and impellers for fans and the like machines
Inventor: LEVACIC IVAN
IPC: F04D29/30
Filed: 1963-02-22
Abstract: 1,078,112. Centrifugal blowers and compressors. AEREX Ltd. Jan. 30, 1964 [Feb. 22, 1963], No. 7279/63. Heading F1G. An impeller blade for a radially outward flow blower, compressor or the like, has a radially inner surface formed with a chordal contour comprising three curved parts, each of substantial chordal extent, the parts being an intermediate concave part, a convex leading edge part and a convex trailing edge part (which may be curved throughout or may have a plane or flat face towards the trailing edge). The blade is disposed with its chord at an angle to the radial direction, so that the surface 1 is the radially inner surface. The surface 1 has convex portions 2 and 3 adjacent the leading edge 7 and trailing edge 9, respectively, with a concave intermediate portion 4. At midchord, the distance between the surface 1 and the chord is preferably not greater than 0À45 of the chord. A mathematical expression for the contour of the surface 1 is given in the Specification. A close approximation can be obtained by joining end to end three suitably located circular areas of approximately equal radius. The radially outer surface may, as shown, be convex over the greater part 6 of its length from the leading edge 7, with a plane or concave part 8 adjacent the trailing edge 9. For good performance and low weight, the maximum thickness D should be between 0-05 and 0À10 of the blade chord. The thickness may be locally increased to take fixing screws. The included trailing edge angle # should be between 6 and 12 degrees. The leading and trailing edges should be rounded off, with a radius of between 0-0050 and 0À010 of the blade chord. The blade may be cast, machined from solid stock or machinefinished from an extruded blank. Alternatively, the blade may be rolled or pressed from a plate or lamina so that it is of constant thickness with the radially outer contour similar to the radially inner contour. The blade may instead be of constant thickness over the extent of the concave intermediate part, the portions of the radially outer surface adjacent the leading and trailing edges being machined flat.
Patent GB-654980-A (GB)
Title: Improvements in and relating to the production of bodies adapted for use as insecticides
IPC: C07D211/02
Filed: 1948-03-11
Abstract: Insecticidal compositions are produced by a process comprising catalytically hydrogenating pyridine or its homologues or catalytically dehydrogenating piperidine hydrogenated quinoline or hydrogenated isoquinoline or their homologues optionally in the presence of hydrogen and recovering an insecticidal mixture of condensation products boiling above about 275 DEG  C. by fractionation.  According to the Provisional Specification the mere treatment of the above classes of compounds with hydrogenation or dehydrogenation catalysts respectively enables high boiling insecticidal materials to be produced and quinoline and isoquinoline are included as starting materials and the use of hydrogen in either process appears optional.  The process may be carried out in either liquid or vapour phase and the hydrogenation or dehydrogenation catalyst employed appears unimportant.  Nickel, particularly Raney nickel, is a suitable catalyst showing both hydrogenation and dehydrogenation activity according to temperature.  In the vapour phase operation a nickel cage may be used and Raney nickel in the liquid phase operation.  Mixtures of tertiary nitrogenous cyclic bases may be used such as mixtures of pyridine and piperidine.  In examples (1) pyridine vapour and hydrogen are passed over a nickel cage catalyst at elevated temperature and pressure to obtain a product containing 90 per cent piperidine and from which 5 per cent of insecticidal material is obtained by fractionation at atmospheric pressure; (2) piperidine is heated at elevated pressure in the pressure of Raney nickel with hydrogen and the products are fractionated to obtain insecticidal material boiling over 275 DEG C.ALSO:An insecticidal mixture of condensation products boiling above about 275 DEG C. is obtained by fractionation of products obtained by catalytically hydrogenating pyridine or its homologues or catalytically dehydrogenating, optionally in the presence of hydrogen, piperidine, hydrogenated quinoline or hydrogenated isoquinoline or their homologues (see Group IV(b).  According to the provisional Specification the mere treatment of the above classes of compounds and quinoline and isoquinoline also with hydrogenation or dehydrogenation catalysts respectively, yields high boiling insecticidal materials, and the use of hydrogen is optional. Material boiling over 275 DEG C. having insecticidal properties is obtained by fractionating products obtained in p  examples (I) by hydrogenating pyridine using a nickel catalyst; (II) by heating pyridine with hydrogen in the presence of Raney nickel.
Patent GB-233834-A (GB)
Title: Improvements in kit bags, hand bags and the like
IPC: A45C3/00
Filed: 1924-03-25
Abstract: 233,834. Reid, W. D. March 25, 1924. Kit-bags; hand and like bags.-A kit or like bag is provided with means for increasing its capacity by means of an upwardly directed extension of the sides and ends, means being provided which serve for locking the bag in both extended and partially collapsed states. The sides, Figs. 2 and 7, have inwardly foldable upper parts 2 to the edges of which frame bars 7 are riveted, and the pliable upper portions 4 of the ends are secured to inwardly-foldable hinged bars, 5, 5a hinged to the ends of the bars 7. Adapted to slide on the bars 5, 5a, when extended, are closure bars 9, 10, Figs. 10 and 11, to each of which and also to one of the frame bars is secured a strip 11 of pliable leather etc.; these leather strips constitute covers for the mouth of the bag when in the extended state. The closure bar 9 carries the handle 14, the usual hinged end clips 15, and also at its underside a lock 13. The bar 10 is narrower than the other and has hasps adapted to engage the lock. These bars provide the closure for the bag whether in the extended or partially collapsed state.
Patent GB-993006-A (GB)
Title: A method for the preparation of propanediols (1,3)
Filed: 1964-02-24
Abstract: The invention relates to a method for the preparation of a propane diol (1,3) of the general formula <FORM:0993006/C2/1> in which R is hydrogen or a radical R1CO, R1 being alkyl or chloroalkyl having 1 to 4 carbon atoms inclusive, which comprises reducing a serine derivative of the general formula <FORM:0993006/C2/2> in which R and R1 are as above defined in an inert organic solvent with diborane and then if desired acylating the compound so produced or if desired preceding the acylation by hydrolysis. The serine derivative may be of the erythro or threo series and specified derivatives are N-dichloroacetyl derivative of the 1-threo - beta - p - nitrophenyl serine and 1 - threo - beta - p - nitrophenyl serine.  Examples describe the preparation of 1-chloroamphenicol by reducing the N-dichloroacetyl derivative of 1-threo-beta-p-nitrophenyl serine with diborane; d-threo-1-p-nitrophenyl-2-acetamido propanediol (1,3) by reducing the N-acetal derivative of the d - threo - beta - p - nitrophenyl serine; d1 - erythro - 1 - p - nitrophenyl - 2 - dichloroacetamido propanediol (1,3) from the N-dichloroacetyl derivative of the d1-erythrobeta-p-nitrophenyl serine.
Patent GB-1059293-A (GB)
Title: Refrigeration apparatus
IPC: F25B1/00
Filed: 1964-02-24
Abstract: 1,059,293. Refrigerating; tube supports. CARRIER CORPORATION. Feb. 24, 1964 [May 20, 1963], No. 7695/84. Headings F4H and F4S. A refrigerating machine comprises a shell divided by a partition into a condenser chamber and evaporator chamber, and tube sheets arranged in said condenser chamber, said tube sheets having portions which project through the wall of said shell. As shown, a cylindrical shell 14 is divided by an arcuate partition 16 into a condenser chamber 18 and an evaporator chamber 20, the condenser chamber containing a tube bundle 19 supported by tube sheets 22. The latter are provided with ears 21 and 21<SP>1</SP> which project through the wall of the shell 14 and are welded thereto so that the sheets 22 serve as strengthening members for the partition 16 which is under stress due to the pressure difference between chambers 18 and 20. Ear 21<SP>1</SP> projects beyond the wall of the shell to support a cooling tube 25 and is enclosed by a wall 24 defining a chamber 26 which communicates with the condenser chamber through apertures 28 and 30. Non-condensibles and entrained refrigerant vapour pass through aperture 28 into the chamber 26 where the refrigerant is condensed by tube 25 and returns to chamber 18 through aperture 30, the non- condensibles being discharged from chamber 26. Liquid refrigerant from chamber 18 passes through an aperture 31 in partition 16 and through a filter 33<SP>1</SP> into a chamber 33 containing a float valve 34 which admits the refrigerant to a duct 35 whence it passes through an opening 15 in the wall 14 to collect in a space 32 beneath a plate 37 having central apertures 37<SP>1</SP>. Refrigerant flowing upwardly through the latter is directed laterally by a member 41 and then flows with relatively high velocity upwardly through apertures 38<SP>1</SP> in a plate 38 overlying plate 37 to wet the tubes of a tube bundle 29 in the evaporator chamber. The high velocity of the refrigerant entering the latter is maintained at low load conditions by admitting high pressure gaseous refrigerant from the compressor discharge to the space 32 via a conduit 44 under the control of a valve 46. The latter may be controlled in accordance with the superheat of the refrigerant vapour leaving the tube bundle 29.
Patent GB-1360306-A (GB)
Title: 'eat exchange system
IPC: F24F12/00
Filed: 1972-02-18
Abstract: 1360306 Heat transfer devices Q-DOT CORP 18 Feb 1972 [19 Feb 1971] 7612/72 Addition to 1255114 Headings F4S and F4U In a heat transfer unit 52 of the kind disclosed in Specification 1,255,114 for use in a ventilating system for transferring heat between fresh air and exhaust air, each finned heat transfer device 54 is in the form of a Perkins tube and comprises a sealed tube 56 disposed substantially horizontally and containing a vaporizable-condensable working fluid 62. The heat transferred between the fresh and exhaust air streams can be controlled automatically by varying the inclination of the Perkins tubes 54 to the horizontal in response to a signal from a temperature sensor 80 provided at a point in the fresh air flow downstream of the unit 52. The unit 52 is mounted on a pivot 74 and an elevating mechanism 76 driven by a comparator and servo-amplifier 78 serves to vary the inclination. A temperature selector 82 provides a signal to the amplifier 78 representative of a manually selected temperature level. The Perkins tubes may include capillary means to transport the working fluid in its condensed or liquid state, circumferentially so as to increase the area of contact between the liquid and the tubes.
Patent GB-527494-A (GB)
Title: Improvements in or relating to the manufacture of resinous products derived from acrylic acid derivatives
IPC: C08F20/22
Filed: 1939-03-09
Abstract: 527,494. Vinyl polymerization products. IRELAND, T. S., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 9, 1939, No. 7682. [Class 2 (iii)] Resinous products are prepared by incorporating with a polymerizable ester of α-chloroacrylic acid which is substantially free from autoxidation products, or with a composition containing a major proportion of such an ester, an amount between 0.1 and 5 per cent., calculated on the weight of the ester and soluble therein, of a polyhydric alcohol or a partially or completely etherified or esterified derivative thereof, and subsequently submitting the composition to a known process for polymerizing α-chloroacrylic acid esters. Methyl, ethyl and the propyl esters of α-chloroacrylic acid, and esters of α-chloroacrylic acid which have been treated as described in Specification 518,970 may be used. Specified polyhydric alcohols are glycol and glycerol and suitable ester and ether derivatives are triacetin and isomeric forms of monoacetin, diacetin, monobutyrin, glyceryl monophenyl ether and glyceryl diphenyl ether. The alcohol or derivative thereof may be dissolved in the monomeric ester before polymerization or may be incorporated with the partially polymerized esters. Polymerization may be effected by heating in the presence of a peroxide polymerization catalyst e.g. benzoyl peroxide or succinyl monoperacid, or by the action of actinic radiation in the absence of oxygen or oxygen containing gases ; the monomer may be suspended in a liquid with which it is immiscible or may be in the form of an emulsion. In examples methyl α-chloroacrylate containing benzoyl peroxide is heated respectively with ethylene glycol, glycerol, triacetin, α-monoacetin, α-monobutyrin, α-glycerol monophenyl ether or α-α glyceryl diphenyl ether. Specification 411,860 also is referred to.
Patent GB-375743-A (GB)
Title: Improvements in and relating to, refining and preparing for casting magnesium and its alloys
IPC: C22B26/22
Filed: 1931-08-18
Abstract: Magnesium or magnesium alloys are refined by heating to a temperature not exceeding 800 DEG  C. with a flux consisting of magnesium fluoride and hydrous magnesium chloride, for example a flux consisting of 40 per cent magnesium fluoride and 60 per cent magnesium chloride containing 2-20 per cent by weight of water. The flux rises and forms a solid crust over the surface of the metal which may be run into casting moulds from a point below the level of the crust, the space so formed between the molten metal and crust being preferably filled with inert vapour.
Patent GB-485503-A (GB)
Title: An improved process of expanding or exfoliating vermiculite and other similar mineral substances
IPC: C04B20/06
Filed: 1937-03-17
Abstract: Vermiculite is expanded by grading the mined material to a uniform size, drying the particles, and passing them through an expansion chamber consisting of an adjustably inclined straight tube, internally or externally heated to a temperature not exceeding 2000 DEG  F., the period of heating being determined by the length and inclination of the tube.  The rate of feed of the particles to the expansion chamber is such that there is no crowding, and the particles expand freely.  The expanded material is cooled rapidly, for example by discharging it on to a steel conveyer belt, the underside of which is water-cooled.
Patent GB-696659-A (GB)
Title: Improvements in or relating to micro-wave aerial arrays
Inventor: RODGERS JOHN
IPC: H01Q21/00
Filed: 1951-04-04
Abstract: 696,659. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 20, 1951 [April 4, 1951], No. 7858/51. Class 40 (vii). In a slotted-waveguide aerial comprising a substantially linear array of slots of which a small number have large conductances as compared with the remainder, an iris or diaphragm is arranged across the guide in front of each slot of large conductance to cancel out the reactive component of the impedance introduced thereby, and thus reduce the standing-wave ratio in the guide. As shown in the Figure, the aerial comprises a waveguide having a large number of shunt-coupled slots cut in its broad face. In order to obtain a desired polar diagram, for example a fan beam, the four central slots are more strongly coupled to the wave-guide and thus have larger conductances than the remaining slots. In front of each of these, looking from the feed end, is arranged a slot D on the same side of the guide as the corresponding slot, a conducting diaphragm being inserted into each slot and then soldered or brazed into position. In the preferred embodiment the array is arranged along the focal line of a verticallyarranged cylindrical parabolic reflector so that the aerial produces a thin vertical fan beam.
Patent GB-1444209-A (GB)
Title: Couplings
IPC: F16D7/04
Filed: 1975-02-25
Abstract: 1444209 Slip clutches SIEMENS AG 25 Feb 1975 [25 Feb 1974] 7932/75 Heading F2C An overload slip clutch between a pair of gears 10, 30 in the drive of a high speed printer comprises a spring pressed ball or plunger 40 carried by one gear 30 and engageable with a groove 24 in a bracket 18 fast with the other gear 10. The ball 40 may, as shown, be carried by a radial bore 36 and urged radially outwardly by a helical or leaf spring 38 into engagement with the groove 24 or may be carried by an axial bore and urged axially into engagement with the groove.
Patent GB-327144-A (GB)
Title: Improvements in or relating to thermostatically controlled valve devices
IPC: G05D23/02
Filed: 1928-12-21
Abstract: 327,144. Main, Ltd., R. & A., and Wortley, G. W. Dec. 21, 1928. Divided on 327,138. Thermostats.-A thermostat, especially for gas ovens, is provided with an adjustable member such as 44, Fig. 3, disposed between the thermal element 3 and the valve 5, the said member 44 being rotatable and axially slidable by screw action, and a short transverse shaft 9 with bevel gearing 45, 46, or, alternatively, with contrate, or worm and worm wheel gearing. An indicator finger 34 lies over a scale plate 33 which is directed upwardly and is readable from the front. Fig. 4 shows the contrate gear arrangement 48, 49 applied for a screw-action adjustment of the position of the valve seating 4 in relation to the valve member 5.
Patent GB-854261-A (GB)
Title: Improvements in high speed printing mechanism
Inventor: LAST JAMES
IPC: G06K15/08
Filed: 1956-03-14
Abstract: 854,261. Selective printing. ELLIOTT BROS. (LONDON) Ltd. March 12, 1957 [March 14, 1956], No. 7958/56. Class 100(4) Type-wheel machines; hammer impression arrangements. In a high-speed printing machine for use with electronic computors and employing a continuously rotating assembly of type wheels 1, the hammer mechanism for each column of type, comprises a sliding hammer 4 operated by the nose 10 of an actuator 6 having a V-shaped lug 9, which when the actuator 6 is released by a latch 7, engages in the notched periphery of a cam 2 rotating synchronously with the type-drum 1. Operation of the hammer mechanism is initiated by appropriately timed energisation of an electromagnet 13 whose armature 14, dog element 15, and latch 7 allows the actuator to engage the cam 2 under tension of spring 21. A cam tooth 3 thrusts the lug 9 and the actuator 6 in a pivotal movement about trunnion 20 and just before the hammer makes the impression the nose 10 dips below the hammer 4 to allow it to rebound, assisted by.spring 19. The rocker 16 biases the actuator in latched position. In an alternative arrangement the actuator 6, the latch 7 and the electromagnet 13 may be duplicated to operate the same hammer 4 to double the frequency of operation. A further embodiment (Fig. 2, not shown) the latch -is formed as a straight lever and cooperates with a rocker which operates on a second cam wheel. This construction enables the electromagnets to be at right angles to those in Fig. 1. Instead of the actuator having a sliding and pivotal action about the trunnion 20, the hammer 4 may have a small pivotal as well as a sliding action and the actuator operates about a fixed axis. There is a blank space on the type-wheels equivalent to ten characters and a corresponding space on the cam 2 which prevents any printing as the paper is being fed.
Patent GB-917406-A (GB)
Title: Method of and apparatus for converting vapours originating from driers or evaporators to the solid state
IPC: B01D7/00
Filed: 1960-03-07
Abstract: <PICT:0917406/III/1> Water vapour, alone or in admixture with the vapour of a water-soluble substance, from an evaporator or drier, is converted to the solid state by sprinkling the vapour with a finely divided cooling liquid at a temperature substantially below the solidification temperature of the vapour.  As shown vapour from a tumbler drier A, which is heated by a hot-air jacket B and/or a heating coil entering and leaving the drier at C, is passed to a condenser connected to a vacuum pump VP where it flows upwardly in a contacting section H countercurrent to descending droplets of a silicone oil from a perforated plate K.  The silicone oil droplets, at about -30 DEG C., become coated with ice and fall into a collecting chamber N, the oil becoming separated from the ice by impact with the walls of compartment U or with the surface of liquid in the sump S.  Ice crystals are removed from the sump S while the oil at about -5 DEG C. is passed through the perforated bottom R into compartment V to be recirculated by pump P to the chamber above plate K after heat exchange with cooling brine.  In another application the vapours and cooling medium may flow in the same direction and the contact section H need not be vertical.
Patent GB-108662-A (GB)
Title: Improvements in Resilient Buffers for Automobiles.
Inventor: NEWTON RICHARD THOMAS
IPC: B60R19/28
Filed: 1917-06-04
Abstract: 108,662. Newton, R. T. June 4, 1917. Wheel guards and obstruction-removers. - A safety guard for motor-vehicles comprises a front or impact blade spring 12, 13 and a rear or reinforcing spring 10, 11 which are secured at their ends to the side bars 14, 15 of the chassis frame and to each other near their centres. The impact spring is of greater length than the reinforcing spring, being extended laterally to protect the vehicle wheels and then bent sharply at 22 to form supporting-arms 23. The springs may be made in one or two parts and are connected at the centre by means of a nut and bolt 18 and one or two clamping-plates 16, 17, which have projections 19 arranged to enter recesses 20 in the springs so that the guard can be fitted to vehicles of various widths. The rear ends of the springs are secured to the bars 14, 15 by means of screw clamps 24 or hook bolts and, for this purpose, may be bent to form vertical attaching arms.