baber/WOPTO huggingface dataset:
Patent GB-576027-A (GB)
Title: Improvements in and relating to the production of acetals
Filed: 1943-08-30
Abstract: Bis (hydroxy acetic acid ester) acetals are prepared by reacting acetylene with an hydroxylacetic acid aliphatic ester at a temperature of 20 DEG  to 150 DEG  C. in the presence of a catalyst containing a mercury compound.  The acetals have the formula CH3CH(OCH2 COOR)2 where R represents a saturated or unsaturated, substituted or unsubstituted aliphatic group. Preferably, esters of alkanols having not more than 7 carbon atoms are employed.  The catalyst may be a boron trifluoride methanol complex containing mercuric oxide or any mercuric salt of an acid weaker than the boron trifluoride-methanol complex, i.e. of an acid having a dissociation constant less than 1 X 10-3, for example mercuric carbonate, acetate or benzoate.  Boron trifluoride complexes with ethers, higher homologues of methanol, acetic acid, and water may also be used as a medium for the mercury catalyst.  Alternatively, mercuric salts of stronger acids such as mercuric phosphate or sulphate may be employed alone. With boron trifluoride complex and mercuric salts as catalysts the reaction may be carried out at temperatures from 20 DEG  to 60 DEG  C., preferably between 25 DEG  and 50 DEG  C. and pressures above atmospheric pressure may be employed.  When mercuric phosphate or sulphate is employed as the catalyst the temperature should range from 30 DEG  to 150 DEG  C. and more preferably 70 DEG  to 110 DEG C. and the acetylene is used under pressure, for example 50 lbs. to 500 lbs./sq. in. though the preferred range is 200 to 300 lbs./sq. in.  Examples describe: (1) the preparation of bis (isobutyl hydroxy acetate) and bis(methyl hydroxy acetate) acetals by reacting the hydroxy acetic acid esters with acetylene at atmospheric pressure in the presence of mercuric oxide and boron trifluoride methanol complex; (2) the same acetals are prepared using acetylene under high pressure and a mercuric phosphate catalyst.  Other hydroxy acetic acid esters which may be employed are ethyl, propyl, butyl, dodecyl, allyl, methallyl, and 2-acetoxy-ethyl hydroxy-acetates. The Provisional Specification describes in addition to the above, the preparation of acetals of the given formula where R also represents cycloaliphatic, aromatic and heterocyclic groups and specifies phenyl, cyclohexyl, benzyl and tetrahydrofurfuryl hydroxy acetates as starting materials.  A sample has been furnished under Sect. 2 (5) of bis-(methyl hydroxy acetate) acetal prepared according to (2) above.
Patent GB-769073-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/36
Filed: 1955-05-16
Abstract: 769,073. Suction cleaners. PATCHETT, G. W. May 16, 1955, No. 14131/55. Class 8(1) In a vacuum cleaner comprising two cup-shaped casings 10, 11, Fig. 1, detachably and airtightly secured together at their rims and having a partition 16, 22 adjacent thereto providing a dust collecting compartment and an impeller compartment, the partition is hollow and has a first opening 29, Fig. 2, or set of such openings connecting the dust-laden air inlet 31 of the cleaner to the dust - collecting compartment and a second opening 18 or set of such openings covered by a filter 19 and connecting the dust-collecting chamber with with the inlet 38 of the impeller 41 which discharges through a blower socket 45. Both casings are of moulded plastic. the dustcollecting one being transparent. The rims are held against a sealing gasket 12 by clips 13 and the cleaner is supported by legs 14 integral with the casing 10 and has rubber feet 15.
Patent GB-557410-A (GB)
Title: An improved process for the manufacture of halogenated hydrocarbon compounds
IPC: C07C17/02
Filed: 1941-11-03
Abstract: 557,410. Halogenated hydrocarbons. STANDARD OIL DEVELOPMENT CO. Nov. 3, 1941, No. 14132. Convention date, Oct. 31, 1940. [Class 2 (iii)] Aliphatic olefins containing at least 4 carbon atoms are halogenated to the dihalides, while inhibiting the formation of other products, with free halogen in a liquid medium in presence of a small proportion of a ferric halide. Thus free chlorine and butylene are passed simultaneously into liquid butylene dichloride in presence of 0.05-0.5 per cent. ferric chloride. Other halogenated hydrocarbons or the hydrocarbon itself may be used as liquid medium.
Patent GB-1301093-A (GB)
Title: Production of metal strip from powdered metal
Inventor: DAVIES IDWAL
IPC: B22F7/04
Filed: 1969-03-18
Abstract: 1301093 Sintered metal strip BRITISH IRON & STEEL RESEARCH ASSOCIATION 17 March 1970 [18 March 1969] 14155/69 Heading C7D Sintered metal strip e.g. iron or steel is formed by depositing a slurry of metal powder and a binder on to a support where the slurry is dried to form a film which is rolled to a green strip, partially sintered in a tunnel furnace, coiled and the coils are sintered in a batch furnace. The partially sintered strip may be rolled prior to coiling and the fully sintered strip may also be rolled. Iron and steel strip may be partially sintered in the tunnel furnace at 750- 1400‹C. for 5-250 secs. Mild steel coils are batch sintered at 550-750‹C. up to 48 hours and stainless steel coils at 700-950‹C. up to 96 hours. For the formation of 0À001-0À01" mild steel strip a slurry containing 70% weight - 300 B. S. S. mesh steel and 30% of 1À5% aqueous solution of methyl cellulose is used. The slurry is deposited on a heated drum 3 by roller coater 2 and dried to a water content of 2-6% prior to drying on belt 4 in furnace 5. After rolling at 6 the green strip is partially sintered in tunnel furnace 8, rolled at 9 and coiled at 14 prior to batch sintering.
Patent GB-914301-A (GB)
Title: Improvements in or relating to power-assisted braking apparatus for vehicles
Inventor: BALLARD DONALD HENRY
IPC: B60T13/24
Filed: 1960-04-22
Abstract: 914,301. Fluid-pressure brakes. CLAYTON DEWANDRE CO. Ltd. May 3, 1961 [April 22, 1960], No. 14217/60. Addition to 835,970. Drawings to Specification. Class 103(1). In the dual braking system of parent Specification, the hydraulic transmissions from the master cylinders to the servo control valves are also connected to the spaces behind the servo hydraulic pistons to provide manual hydraulic operation in the event of power failure or to augment power operation. The hydraulic cylinders of the servo units may be of the low-input type as described in Specification 752,747, and the power servo cylinders may have a length exceeding the piston stroke to provide a fluid reservoir.
Patent GB-714379-A (GB)
Title: Improvements in or relating to refrigerators
IPC: F25B39/02
Filed: 1952-06-06
Abstract: 714,379. Refrigerating. COLDAIR, Ltd., and SAUNDERS, N. F. T. May 22, 1953 [June 6, 1952], No. 14342/52. Class 29 A box-like evaporator for location in the top of a refrigerator has its top wall refrigerated by a conduit 2 and stepped to provide a space 6 within the general contour of the evaporator for the reception of one or more ice-trays. The space 6 is bounded by a rear baffle 8 and by an upward extension 9 of the adjacent side wall and is of slightly greater height than an ice-tray. The sides, bottom and back of the evaporator may also be refrigerated.
Patent GB-1185916-A (GB)
Title: Improvements in or relating to Musical Tone Generating Means
Inventor: MARKOWITZ JEROME
IPC: G10H1/00
Filed: 1967-03-29
Abstract: 1,185,916. Resonators; loudspeakers. ALLEN ORGAN CO. 29 March, 1967, No. 14342/67. Headings H4J and H4X. [Also in Division G5] In a tone generator for simulating the sound of a pipe organ (see Division G5), a plurality of loudspeakers 46, 48, 50 supplied with signals from separate electronic oscillators is mounted in a common resonator 60. The resonator length is chosen to equal an integer times onehalf the wavelength of one of the tones to be produced, reference being made, however, to arrangements which are only substantially resonant and other arrangements which are off resonance for selected tones. Constructions based on single loudspeakers are also described in which: (a) the loudspeaker is mounted in the end of the resonator, Figs. 1 and 3 (not shown), (b) the loudspeaker is mounted at the end of the resonator in a side wall, Fig. 4 (not shown), and (c) the loudspeaker is mounted in a side wall at the centre of the resonator, Fig. 5 (not shown). In constructions (b) and (c), it is stated that neither or both ends of the resonator may be closed. The resonator, which may be of round, rectangular or polygonal crosssection, may be constructed of wood, metal or a plastic material.
Patent GB-807674-A (GB)
Title: Improvements in or relating to aerials
IPC: H01Q5/49
Filed: 1955-05-18
Abstract: 807,674. Aerials. SHARDLOW ELECTRIC WIRES Ltd. and JONES, P. June 22, 1956 [May 18, 1955], No. 14351/55. Class 40 (7). The invention relates to an aerial structure capable of receiving signals at two widely separated frequencies. According to the invention the structure includes dipoles effective at the two frequencies and combined in a single unit with a feeder attached to the central point of the unit. A second dipole, which may be parasitic or coupled is provided for the higher frequency and, with the other dipole for this frequency, forms an array capable of angular adjustment relative to the parts of the structure effective at the lower frequency. It is also proposed to provide a set of parts for attachment to an aerial operative at the lower frequency to convert it into a two-frequency aerial as described above. In one embodiment the lower-frequency part of the structure may comprise a dipole 1, 1a connected to a feeder in junction box 3 and supported, together with reflector 2, 2a, on a cross-arm 5 mounted on a mast 6. The first higher-frequency dipole is formed by arms 7, 7a attached to the dipole 1, 1a close to the centre thereof by means of of clamps 8. The arms 7, 7a form a V dipole. Pivotally attached to cross-arm 5 by means of clamp 9 is a further support arm 10 carrying the second, and in this case parasitic, higherfrequency dipole 11. The V dipole is angularly adjustable about the elements 1, 1a, and the arm 10 is angularly adjustable so that the higher frequency array is adjustable relative to the lower-frequency elements.
Patent GB-1118263-A (GB)
Title: Disconnect device for survival kits with safety devices
Inventor: GAYLORD JOHN ALDEN
IPC: B64D17/78
Filed: 1966-03-31
Abstract: 1,118,263. Two-part coupling. H. KOCH & SONS Inc. 31 March, 1966, No. 14386/66. Heading H2E. [Also in Division F2] A connector body for oxygen and electrical supplies is provided with obstruction means 32 which prevent, the insertion of a plug 4 until the. insertion of a second plug 6 operates means 38 to render the obstruction means inoperative, as is shown in the Figure. The obstructing means may comprise a bell-crank lever 32 which is misaligned with the pocket 37 until the forked end 40 of the other arm is raised by the rod 38 when the latter is raised by a spring-loaded plunger 71 mounted in a casing 27 in the second plug 6. Insertion of the first plug then depresses the rod 38 to move its lower end into a passage 64 in the casing 27, when. balls 67 look the casing to. the " pulling block " 28. The body forms part of a survival kit, the plugs 4 and 6 being man to kit and kit to aircraft plugs respectively. When the person wearing the kit jumps or is ejected from. the aircraft, the block 28 is pulled out with the plug 6 until the balls- 67 clear the end of rod 38 and release the block from the plug. The movement of the block operates a line 29 to open the emergency oxygen supply from the kit to the man. In one embodiment, the upper socket is formed in the hinged' lid of the survival kit (Figs. 10, 11', not shown). In another embodiment, the bell-crank lever is pivoted in the plug 4, the pocket being formed in the part 34.
Patent GB-419739-A (GB)
Title: An improved method of mounting doors on the bodies of motor and other vehicles
IPC: B60J5/04
Filed: 1933-05-18
Abstract: 419,739. Hinges. METCALFE, E., 44, Alder Road, and WALTER, Ltd., M., 145, Sandgate Road, both in Folkestone, Kent. May 18, 1933, No. 14413. [Class 65 (ii).] In a four-door vehicle the hinges for the two doors 6, 7 on each side of the body are supported by two pairs of lugs 4, 5 projecting from a door-post 1 so that the opposed edges of the doors when closed abut or nearly abut, thus concealing the post. As shown the post is an oval-section, tubular member preferably of metal tapering from its base upwardly and is mounted on the longitudinal and transverse body members 2<a>, 3<a> by flanges 2, 3. The lugs 4, 5 form the fixed plates of the supporting hinges and carry a hinge-pin 8, Fig. 5, common to the moving hinge-plates 6<a>, 7a which are secured one to each door and are adapted to engage in spaces 9 in the lugs 4, 5. Alternatively the doors may be recessed to receive the lugs 4, 5.
Patent GB-1446803-A (GB)
Title: Preparation of bromofluorinated methanes
IPC: C07C67/00
Filed: 1974-04-01
Abstract: 1446803 Bromofluoromethanes MONTEDISON SpA 1 April 1974 [30 March 1973] 14434/74 Heading C2C Bromofluoromethanes are prepared by passing a gaseous mixture of methane, bromine and HF at 350-500‹ C. over an AlF 3  or fluorinated alumina catalyst. The catalyst preferably contains a total of no more than 5 wt. % of one or more Ni, Co and/or Cr compounds. A temperature of 400-500‹ C., a mole ratio of Br 2  to CH 4  of at least 4 and of HF to CH 4  of 2-4 are preferably employed. By-product halogenated hydrocarbons may be recycled to the reaction. In Example 1 an initial gaseous mixture of Br 2 /HF/CH 4  of 3À8 : 2À8 :1 is used and the product contains CHF 3 , CF 3 Br, GHF 2 Br, CH 3 Br and CBr 2 F 2 .
Patent GB-1429745-A (GB)
Title: Building walls
IPC: F24F13/32
Filed: 1974-04-02
Abstract: 1429745 Air conditioning buildings NIHON NETSUGAKU KOGYO CO Ltd and FUJI SASH KOGYO CO Ltd 2 April 1974 [5 Sept 1973] 14452/74 Heading F4V A unit used in the construction of the exterior wall of a building has a body portion 52 and a box-like portion 51 formed on a suitable part of its interior wall surface defining a space 56 of suitable size to house an air treating system. The box-like portion 51 has openings 57 and 59 for the passage of indoor air, while the exterior wall has an opening 62 communicating with the space 56 to exhaust indoor air or take in outdoor air. A heating and cooling system of the heat pump type may be installed in the space 56. The unit may be constructed so that the body portion (21), Fig. 6 (not shown), is above the box-like portion. A window (2) may be fitted above the unit, Fig. 2 (not shown).
Patent GB-292895-A (GB)
Title: Improvements in mobile cranes
IPC: B66C23/84
Filed: 1927-11-22
Abstract: 292,895. Farnsworth, A. W. Nov. 22, 1927. Divided application. Controlling-apparatus, arrangements of transmission gear in conjunction with; steering- gear and steering.-The undercarriage b of a wheeled slueing crane is provided with a hollow column a in place of the usual solid centre pin, to accommodate concentric hollow tubes c forming part of the control mechanism operated from the driver's station on the slueing platform. The operations controlled in this way may include propulsion, braking, steering, and relieving the springs of load.
Patent GB-1202896-A (GB)
Title: Gas discharge leak detection apparatus
Inventor: HERBERT BRIAN KENNETH
IPC: H01J9/42
Filed: 1967-03-30
Abstract: 1,202,896. Leak detection in a glow discharge device. MULLARD Ltd. March 4, 1968 [March 30, 1967], No.14495/67. Heading G1A. A lack in a glow-discharge device 3, Fig.1, fed from a source 1 through a stabilizer 2 is detected by a change in current to the device, and is indicated or recorded by way of a circuit including a source of radiation 6 the radiation from which is proportional to the current and a sensor 7 responsive to the radiation to provide a signal indicative of the level or of changes. The device may be an ion pump with a gas jet played on its outer surface and the current in the HV lead may be detected by amplifying the drop across a series resistor to control the illumination of a lamp, or alternatively, the path may include a high intensity neon tube, or a source of heat. The potentials or currents may be measured direct or backed-off and the values may be redorded. A full circuit is described with reference to Fig. 2 (not shown) using corona discharge stabilizers and having provision for a number of supplies of different voltages. The lamp radiator is energized by a differential transistor amplifier circuit and a capacitor is connected across the main path measuring resistor to reduce H.F. flux variations. Batteries are included for energizing the transistors and the meter, and means are provided for checking the batteries. A modified meter arrangement in which a silicon photo transistor reponsive to the radiation is included in one side of a two stage differential transistor amplifier is also described.
Patent GB-1356962-A (GB)
Title: Hybrid superconducting material
IPC: H01F6/02
Filed: 1971-05-12
Abstract: 1356962 Super-conductors AIRCO Inc 12 May 1971 [13 May 1970] 14514/71 Headings H1A and A4D A stabilized super-conductor is produced by inserting a rod of a Type II super-conductor into a Cu sleeve, inserting the sleeve in a can or billet of a high-resistivity normal alloy material containing not less than 70 wt per cent Cu and not more than 30 wt. per cent Ni, and elongating the assembly. A plurality of Nb-Ti rods are forced into tubes of Cu or covered with Cu sleeves which partially surround the rod or overlap at their edges and inserted into holes drilled in a billet of matrix material which may be Cu 10 wt. per cent Ni to Cu 30 wt. per cent Ni. The assembly is evacuated, a Cu-Ni lid is sealed over the rods, and then heated, extruded and wire drawn followed by annealing. Alternatively super-conductor rods inserted into concentric Cu and Cu-Ni sleeves are formed to a hexagonal outer shape and are packed into a Cu can which is extruded, drawn and annealed. The wires are preferably twisted before use. The wires may be used to form coils. Hollow conductors may be constructed using composites made in accordance with the invention. The super-conductor material may be Nb-Ti or Nb-Zr.
Patent GB-183962-A (GB)
Title: Improvements in spray or jet carburettors
IPC: F02M19/035
Filed: 1921-05-25
Abstract: 183,962. Wohlers, E. May 25, 1921. Spray carburettors. -Two tubular members f, g, the inner one having a conical end surrounding the fuel nozzle c<1>, are formed with corresponding air inlet openings f<1>, g<1> and are adjustable to vary simultaneously the air inlet openings, the crosssectional area of the air passage at the nozzle and the volumes of the chambers I, II. The mixture is withdrawn by suction through the annular diverging orifice S<1>. The inner member f is preferably adjusted by rotation of a disc j having a spiral groove i which engages radial projection h on the member f, which is prevented from rotation by longitudinal slots o on the member g.
Patent GB-378940-A (GB)
Title: Improvement in direct iron ore reduction
IPC: C21B13/00
Filed: 1931-05-16
Abstract: 378,940. Reducing iron ores ; flotation processes. TRENT PROCESS CORPORATION, 17, Battery Place, New York, U.S.A. May 16, 1931, No. 14571. Convention date, Dec. 3, 1930. [Classes 72 and 82 (ii).] In a process for the reduction of iron ores, bituminous coal which may be mixed with an oil amalgam is fed from a hopper 10 into the uppermost of a set of tubes 3 in a vertical retort 1 and is moved in zig-zag fashion down the retort by conveyers 4 in the tubes, the outside of the latter being heated by hot gases generated in the ovens 5 and supplied to a chamber 6 by a pipe 8. When the material arrives at an intermediate tube 12 in the form of low temperature coke it is mixed with ore from the hopper 11, the mixture being conveyed through the remainder of the tubes 3. The ore &c. is reduced by a mixture of hydrogen and carbon dioxide which is fed into the lowest tube 3 by a pipe 29 and passes up through the tubes in countercurrent to the ore &c. The gases from the upper set of tubes 3 are removed by pipes 13, and pass by a pipe 14 through a condenser 15, and a purifier 16 from which they are discharged by a pipe 18 and fan 19 into a gasometer 20. The gases in the tube 12 are removed by a pipe 22 and pass into a condenser 23 and purifier 24 from which they are led through a pipe 26 by a fan 27 into a gasometer 28. Pipes 21, 39 convey gases to the burners 25 and a pipe 29 gases to the retort 1. The metal, gangue and unconsumed carbon are discharged from the retort on to a conveyer 31 and fed to an amalgamator 32 divided by baffles 33 into compartments provided with agitators 34, the mass being agitated with a light hydrocarbon in a quantity of water. The mass is discharged into a separator 36 and the metal is removed by a drag separator 37. The amalgam and water overflows into a separate compartment where the amalgam is separated from the water and is fed by a conveyer 38 to the hopper 10 where it is mixed with the coal before treatment in the retort. During the reduction process a small quantity of air is introduced into the retort by a pipe 30 to effect incomplete combustion of the coke so as to provide additional heat and to produce additional amounts of carbon monoxide.
Patent GB-623941-A (GB)
Title: Improvements in or relating to drawing appliances
IPC: B43L13/10
Filed: 1947-06-02
Abstract: 623,941. Drawing-appliances. MOORE, D. M. June 2, 1947, No. 14599. [Class 97 (iii)] In an appliance for drawing perspective drawings from plans or elevations, the movement of the tracing point 33 is reproduced to a proportionately changed scale by means of a linkage comprising the pantograph 29, 32, 36, 37 and to a different scale by a second linkage comprising the pantograph 29, 32, 38, 39 and the two movements so reproduced are applied in two mutually perpendicular directions to the drawing point 26 by means of two pivots 34, 41 which are engaged by two slides 28, 27 at right angles to each other in a member 25 to which the drawing point 26 is attached. The member 25 is constrained to move over the drawing board 10 without rotation by means of two parallelogram linkages 21, 22, 20, 16, 17 pivoted at 14, 15 to the mounting 12 to which the major arm 29 of the pantograph is also pivoted. The drawing point 26 moves over a board 46 mounted for transverse movement over the board 10 on parallel slide rails 47. The movement of the tracing point 33 over the plan or elevation is thus reproduced to one scale by the pivot element 34 and to a larger scale by the pivot element 41 and only the components of the movement of each element in a direction transverse to its slide is communicated to the drawing point 26. In a modification, the two pivots of the pantographs at which the movement of the tracing point is proportionately reproduced are each connected to the member 25 by means of linkages constraining the pivots to move in two mutually perpendicular straight lines, whereby only one rectilinear component of the movement of each is transmitted to the drawing point. In a further modification the member to which the drawing point is attached is provided with two slide bars slidably mounted in carriages attached to the two pivots of the pantographs and one of the carriages is constrained to move over the board without rotation relatively thereto. Preferably, the constraining means comprise parallelogram linkages of which the arms of the pantograph may form part. Means are provided for varying the pantographic ratios. Specification 597,159 is referred to.
Patent GB-425730-A (GB)
Title: Improvements in bottles, jars and the like containers
IPC: B65D41/04
Filed: 1934-05-15
Abstract: 425,730. Bottle &c. closures. JACKSON, D. T., Carmel, Knottingley, Yorkshire. May 15, 1934, No. 14621. [Class 125 (iii)] A bottle, jar, or like container is closed by a screwed cap 4 which has a conically tapered skirt 5 below its threads 3 which skirt engages directly with a correspondingly conically tapered portion 6 on the neck of the jar below the threads 2 thereof; the threads can be complete or partial.