baber/WOPTO huggingface dataset:
Patent GB-1020082-A (GB)
Title: Manufacture of oxymethylene polymers
IPC: C08G2/00
Filed: 1962-11-07
Abstract: Oxymethylene polymers are produced by catalytic polymerization or copolymerization of trioxane in a suspension system comprising a discontinuous trioxane-rich liquid phase suspended in a continuous phase containing an inert non-aqueous liquid, non-solvent, which has little or no solvent power for trioxane, wherein a particulate non-polymerizable solid is present in the system throughout most or all of the polymerization.  The non-polymerizable solid may be introduced into the polymerization zone before, at the same time as, or after the initiation of the polymerization reaction, but it is preferably introduced within 10 minutes after the addition of the polymerization catalyst. The amount of sold added may be from 5 to 18 weight per cent based on the total weight of initial mixture of monomer or monomers, catalyst and non-solvent.  The solid may be any inert material, e.g. titanium dioxide or the polymer being made.  In the latter case the polymer used can be that produced in the actual polymerization being carried out which after formation is brought into contact with fresh monomer by recycling.  The most suitable catalysts are the boron fluoride-containing catalysts, including boron fluoride itself, boron fluoride co-ordination complexes with organic compounds in which oxygen or sulphur is the donor atom, boron fluoride co-ordination complexes with water and with weakly basic nitrogen or phosphorus compounds.  Preferably, the non-solvent is a normally liquid paraffinic hydrocarbon having at least six carbon atoms in the molecule.  Mixtures of such hydrocarbons may be used, including petroleum fractions which contain high proportions of paraffins and N-heptane, iso-octane, n-decane and decalin are mentioned.  In general 0.25 to 10 parts by weight of non-solvent may be used per part by weight of trioxane.  When making copolymers the preferred comonomers are cyclic ethers containing oxyethylene groups such as ethylene oxide or dioxolane and the amount of comonomer used is generally 0.5 to 10 weight per cent based on the weight of trioxane.  In the example, a trioxane/ethylene oxide copolymer is prepared.
Patent GB-1212947-A (GB)
Title: Method and apparatus for forming bundles of flat elongate objects
IPC: B65G57/18
Filed: 1968-09-04
Abstract: 1,212,947. Bundling elongate articles. OY. TAHKA A.B. 4 Sept., 1968 [5 Sept., 1967], No. 42152/68. Heading B8C. Bundles of elongate objects such as boards or planks are formed by dropping or lowering the planks to form a pile 2, pushing this pile and the subsequent similar piles sideways to form a partial bundle 4 having width equal to that of the bundle to be formed, and lowering this partial bundle on to a support 5, then forming a subsequent bundle 4 and lowering it on to the preced ing bundle 4 and so on. The piles 2 are formed on a support 8 by the planks fed from a conveyer 1 of a device (which may be similar to the one described in Specification 1,150,327), and the piles are pushed by hydraulic rams 3. The supports 8 are then lowered and moved laterally to position the partial bundles, one above the other, on supports 5. After a bundle 6 of the desired height is formed, the supports 5 are lowered by hydraulic means to transfer the bundle 6 to roller supports 7 from where it is transported out of the machine. Transverse slats from magazines 9 may be inserted between the partial bundles 6. Various operations may be initiated automatically by a planks counter and by limit switches 30-33 actuated by the planks/machine parts. The supports 8 may be displaced by various alternative mechanisms described with reference to Figs. 4 to 6 (not shown) and Fig. 1.
Patent GB-1016095-A (GB)
Title: Semiconductor switching device
IPC: H01L21/00
Filed: 1963-10-28
Abstract: 1,016,095. Semi-conductor switching devices. WESTINGHOUSE ELECTRIC CORPORATION. Oct. 28, 1963 [Nov. 7, 1962], No. 42327/63. Heading H1K. A switching device consists of two four-layer elements each of which comprises a first P(N) region, a second region forming a PN junction therewith, a third region forming a PN junction with the second region and a fourth region or element joined to' and capable of injecting minority carriers into the third region, and electrode connections to each first, third, and fourth region. The first, second and third regions of both elements are formed within a single wafer with the second regions forming a common region. In one form the two elements are formed at opposite ends of the wafer and in another one is of annular form and surrounds the other. A typical arrangement of the first type, Fig. 3A, is formed from a 20 ohm cm. N-type silicon wafer by diffusing aluminium into its entire surface to form a P-type skin and then, after alloying contacts of gold-boron and goldantimony to form ohmic and PN.junction contacts respectively to the skin, etching off parts of the skin to isolate the elements as shown. In an alternative method the P regions are formed by diffusing boron into the N-type silicon through oxide masking and the remaining N regions by diffusing phosphorus through further masking. In each case before encapsulation the elements are interconnected in parallel opposition by metal tracks formed over surface oxide layers by evaporation. Fig. 10C shows a concentric arrangement with interconnections made through blocks 351, 352 of silver and copper, respectively, brazed to silver electrodes 343-346. In a modification the lead from control electrode 342 extends through a hole in block 351 and region 325 is extended to the edge of the upper surface to provide a more convenient position for the other control electrode. Use of germanium, gallium arsenide, indium antimonide and silicon carbide as wafer material and application of the invention to PNPM and NPNM elements of the type described in Specification 886,725 is also envisaged.
Patent GB-1360984-A (GB)
Title: Fan rotors
IPC: F04D29/28
Filed: 1971-08-27
Abstract: 1360984 Centrifugal fans SMITHS INDUSTRIES Ltd 27 Aug 1971 [4 Sept 1970] 42420/70 Heading F1C A fan rotor, e. g. of a cross-flow or centrifugal fan, comprises a spider or disc 5 having on each side a peripheral annulus 3 of resilient material, e.g. rubber or plastics. The disc 5 supports axially-directed blades 8 provided with slots 10 whose defining edges engage the resilient annuli 3, thereby reducing transmission of vibrations between driving motor and blades 8. Preferably the slots 10 are key-hole shaped, and the annuli constitute part of an integral member of U-shaped cross-section as shown. The blades may additionally be supported by end members in a conventional manner or in a manner similar to that of disc 5.
Patent GB-1366885-A (GB)
Title: Immersion heater heads and a method of  maiking the same
IPC: H05B3/06
Filed: 1971-09-30
Abstract: 1366885 Making immersion heater heads IMI SANTON Ltd 30 Sept 1971 [4 Sept 1970] 42538/70 Heading B3A [Also in Division H5] An immersion heater head is formed by cold pressing sheet metal into a dish shape with a cylindrical portion 3 on or adjacent to which threads are formed on end wall 4 and a spanner engaging portion 2. The portion 2 may be octagonal or cylindrical with integral projections (13), Fig. 4 (not shown), or metal pieces brazed, soldered or adhered in position. In one embodiment, Fi5. 1, the head is provided with a thread by riveting or brazing an annular strip 8 with a helical periphery to the end wall 4. Alternatively the thread may be formed on the cylindrical portion by rolling, or on a cup which is adhered or brazed over the cylindrical portion. The sheet metal may be mild steel coated on at least one side before or after pressing with brass, copper, titanium tantalum, niobium, ceramic materials or plastics by rolling, electroplating, spraying or dip coating. Alternatively the sheet may be made of copper, brass, titanium tantalum or niobium.
Patent GB-1012701-A (GB)
Title: Improvements in the process for making isoprene by condensation of isobutene with formaldehyde
Inventor: LUMBROSO DANIEL
IPC: C07C11/18
Filed: 1961-11-28
Abstract: Isoprene is obtained by cracking the secondary products boiling in the range 35-132 DEG  C. obtained from the production of isoprene by reaction of isobutene and formaldehyde; this reaction may have been effected in one stage in the presence of a dehydrating catalyst or in two stages with intermediate formation and separation of a dimethylmetadioxane which is subsequently cracked in the presence of a dehydrating catalyst.  Preferably the secondary intermediates are cracked with the isobutene and formaldehyde feed in the one stage process or with the metadioxane in the two stage process, if desired together with any metadioxanes in the product.  This cracking is effected at 150-400 DEG  C. and a LHSV of 0.01-50 over phosphoric acid, silica gel or boron phosphate, deposited on or incorporated in quartz, quartzite, silicon carbide, titanium oxide, alumina, bentonite or kaolin.
Patent GB-1214547-A (GB)
Title: Washing apparatus for enclosed spaces
Inventor: REITER BENJAMIN C
IPC: B08B9/093
Filed: 1968-09-06
Abstract: 1,214,547. Spray producers. PUREX CORP Ltd. 6 Sept., 1968, No. 42649/68. Heading B2F. [Also in Division A4] A tank washer comprises a housing 10, a rotating spray head 68, means to drive said spray head including a cylindrical rotor chamber 14 within said housing, a rotor 46 mounted within said chamber and drivingly connected to the spray head, said rotor having a plurality of circularly disposed teeth 50 to define a plurality of rotor spaces with the wall of said chamber, means including a passage 36 and valve 38 disposed therein for controlling introduction of motive fluid to the chamber, said teeth each being provided with a first face and a second face disposed at an angle to the first face, circularly distributed motive fluid inlet ports 34 at one end of the rotor chamber and circularly distributed motive fluid outlet openings 92 at the opposite end of the chamber, said inlet ports being fewer in number than said rotor teeth such that fluid introduced through said inlet ports induces rotation of said rotor. The inlet ports and outlet openings may be registered to provide simultaneous fluid inlet and outlet. The inlets may be fed from annular channel 24 to provide pressure equalisation, Alternative motive fluid supply means may be provided by line 96 controlled by valve 98. (For Figure see next column)
Patent GB-922568-A (GB)
Title: Photographic layers suitable for the silver dyestuff bleaching method
IPC: C09B43/14
Filed: 1961-11-30
Abstract: Yellow azo dyes having the general formula <FORM:0922568/IV(a)/1> wherein R1 is a monocyclic residue of the benzene series containing at least one acid group imparting solubility in water, X is an alkyl or hydroxyalkyl group and Y is hydrogen or a methyl group, are prepared by coupling a diazotized amine R1NH2 with an amine of the formula <FORM:0922568/IV(a)/2> and linking together two molecules of the resulting aminoazo dyestuff by means of phosgene.  R1 may be 2-, 3- or 4-sulphophenyl, 2-methyl-4-sulphophenyl, 3-sulpho-4-methyl-phenyl, 3-acetylamino-6-sulphophenyl or 2;4- or 2;5-disulphophenyl, and X may be methyl, ethyl, propyl, hydroxymethyl, heptyl or undecyl.
Patent GB-1019729-A (GB)
Title: A combination fluid displacing master cylinder and flow control valve
Inventor: KREHBIEL ROBERT DONALD
IPC: B60T13/18
Filed: 1964-10-21
Abstract: 1,019,729. Fluid-pressure brakes; clutch control. CESSNA AIRCRAFT CO. Oct. 21, 1964, No. 42924/64. Headings F2F and F2L. A combined master cylinder and valve for use in an hydraulic system including a pump 93 and a return reservoir 92, comprises a spool 14 having a land 36 cooperating with lands 23, 25 of a housing which provides an inlet chamber 26, return chamber 27 and displacement chamber 15, whereby forward movement of land 36 closes off the normally open circuit via channels 13 and admits fluid to the chamber 15 to pressurize a brake or clutch via outlet 28, the spool carrying a piston 16 which also acts on the fluid in chamber 15, a spring 19 acting between the piston and adjustable end stop 20 on the spool whereby feel is transmitted back via the spring with only a small travel of the spool under normal conditions, but on failure of the pump supply the piston 16 displaces the fluid in chamber 15 to pressurize the brake or clutch, being prevented from returning to the pump by a check valve 32 or 95. On return of the valve spool fluid escapes via a piston groove 35, chamber 33 and passage 34 to the return chamber. In the dual form of Fig. 2, which may be used for steering a tractor or track type vehicle by selective braking or clutching on one side or the other of the vehicle, the two brake or clutch cylinders 82, 83 are fed by independently operable valve spools 88, 90 controlling by respective lands 89, 91 flow in a circuit from the pump via inlet chamber 79 to intermediate chamber 78, thence to return chamber 75 so as to cut off such flow and divert the fluid to either or both of two displacement chambers 47, 48 containing piston assemblies composed of outer pistons 49, 50 and inner pistons 55, 56 acted on by springs 65, 66. The operation is as in the Fig. 1 form except that in power operation the inner pistons being of relatively small area generate less feel, while on power failure they move to contact the outer pistons, the inner and outer pistons then moving together so that pedal travel is not excessive. Piston grooves 86 and chamber 76 enable return of fluid from the brake or clutch cylinders to the reservoir 92 on return of the valve spools to release position.
Patent GB-1112633-A (GB)
Title: Fuel cell
Inventor: DUC JOSEPH ADRIEN MAHER LE
IPC: H01M8/00
Filed: 1966-09-26
Abstract: 1,112,633. Fuel cells. PULLMAN Inc. 26 Sept., 1966, No. 42935/66. Heading H1B. A fuel cell comprises a separable electrically conductive middle section B (Fig. 1) positioned between and fastened to upper and lower sections (A and C), section B supporting and being electrically connected to one set of electrodes 86 and section A supporting another set of electrodes 84. Electrodes 86 may be gas diffusion electrodes to which oxygen, air or chlorine may be supplied by inlets 94, electrodes 84 may be anodes over which flows barium amalgam supplied through an inlet 88 and a distributer plate 85, and the electrolyte, which may be an aqueous solution of sodium hydroxide and barium chloride or a solution of barium hydroxide, is supplied through an inlet 89 and withdrawn through an outlet 98. Sections A and C may be composed of or coated with electrically non- conductive material and are insulated from section B. Spent amalgam is removed by an outlet 97. Electric power generated is removed by an anode terminal 101 and a cathode terminal 99.
Patent GB-884139-A (GB)
Title: Vehicle tyres
IPC: B60C7/10
Filed: 1959-12-18
Abstract: 884,139. Solid tyres. FARBENFABRIKEN BAYER A.G. Dec. 18, 1959 [Dec. 19, 1958], No. 43132/59. Class 144 (2). A tyre comprises a solid body 2 of porous cross-linked polyurethanes protected by a tread surface 3 and thin sidewall coverings 4 of non- porous cross-linked polyurethanes. The tread and sidewall covering may be either bonded to the body 2 or as shown, detachable therefrom and formed with edge beads 5 whereby the tyre is detachably secured, as by a holding ring 6 and a split ring 7, to a wheel rim 1.
Patent GB-942426-A (GB)
Title: Cellular plastic material with rapid high strength
IPC: C08G18/50
Filed: 1961-12-01
Abstract: The invention comprises a polyether-type polyglycol based cellular polyurethane characterized in that it contains a minor proportion by weight of an amine-terminated polyoxyalkylene compound having at least two terminal amino groups in the molecule chemically combined therein. Such material is produced by adding a minor proportion of an amine terminated polyoxyalkylene compound having at least two terminal amino groups in the molecule to the isocyanate-polyglycol mixture prior to adding the catalyst and foaming.  Suitable amine terminated polyoxyalkylene compounds have the formula H2N-(RO)n-R-NH2 where R is an alkylene group containing 2 to 4 carbon atoms and n is such that the compound has a molecular weight between 400 and 2000. Others have the formula H2N-(RNH-)n1, (R-O)n (-HN-R)n, NH2 wherein each R is an alkylene radical and n and n1 are positive integers. Specified polyisocyanates are hexamethylene, m-orp-phenylene, 4,41-diphenyl, 4,41-diphenyl ether and 3,31-dimethoxy -4,41-diphenyl diisocyanates and 4, 41,41 1-triphenyl triisocyanate.  Dibutyl tin dilaurate, triethylene diamine and N-ethyl morpholine are suitable catalysts for the foam-forming reaction. In Example (1) foam is obtained by reacting mixtures of an amine obtained by replacing the OH groups of a polypropylene glycol (M.W.400) by NH2, a glycerine-propyleneoxide reaction product, expanded silicate antishrink agent, triethylene diamine, water-soluble organo-silicone, water and toluene diisocyanate. In other examples the amines used include a reaction products of a polypropylene glycol (M.W.400) and a polybutylene glycol (M.W.500), respectively, with diethylene triamine (DETA), having DETA units on each end.
Patent GB-432469-A (GB)
Abstract: 432,469. Depositing metals by electric discharge. ALEXANDER, P., and DISPERSON CATHODIQUE SOC. ANON., 93, Rue Elise, Brussels. Oct. 18, 1934, No. 29863. [Class 41] The cathode to be disintegrated is first treated for the removal of gases strongly incorporated in the surface by active adsorption or " chemosorption This is preferably effected by heating in an atmosphere of a gas, such as hydrogen, which reacts with the adsorbed gas. Heating may be effected by a preliminary discharge or otherwise. The heating temperature should in all cases be above 800‹ C., and in the case of platinum or tungsten should be above 1300‹ C. During the preliminary discharge the objects to be coated are screened. Liberation of the adsorbed gas is facilitated by ionization of the filling gas by means of X-rays, radium, or by auxiliary electrodes. The formed products are evacuated continuously by pumping. Detailed examples are given for the treatment of cathodes consisting of cobalt bands or of molybdenum wire. The invention is also applicable to the cathode disintegration of iron, nickel, chromium, copper, gold and silver.
Patent GB-1104797-A (GB)
Title: Absorption contacting device
Inventor: GIBSON GREVILLE HEDLEY
IPC: B01D53/18
Filed: 1963-11-05
Abstract: 1,104,797. Absorbing gases in liquids. GAS COUNCIL. 5 Nov., 1964 [5 Nov., 1963], No. 43713/63. Heading B1R. In apparatus for absorbing a gas in a liquid gas and liquid are fed at 48 and 49 respectively to the base of a vessel containing contiguous corrugated imperforate plates 41 so arranged that the corrugations of adjacent plates cross each other at a large number of points, a mixture of gas and liquid being withdrawn at the upper end of the vessel and passed to a separating system. The plates 41 are clamped between bulkheads 42 and as shown the gas and liquid follow a tortuous path passing through apertures 45, 46 and 47 in the corrugated plates to reach the outlet. Alternatively, however, the fluid flow in the passages between the sheets may be in one direction. Preferably the sheets have corrugations arranged in a herringbone pattern, the apices of the corrugations on one plate pointing upwardly and in an adjacent sheet pointing downwardly. The apparatus may be used to wash Co 2  from gases by means of an ammonia solution or for transferring a gas dissolved in a liquid to a second liquid.
Patent GB-1472617-A (GB)
Title: Method and apparatus for treating textile materials
IPC: D06B3/04
Filed: 1974-10-09
Abstract: 1472617 Steaming textiles ETABS CALLEBAUT-DE BLICQUY SA 9 Oct 1974 [9 Oct 1973] 43724/74 Heading D1L In the steaming of textiles e.g. yarns, cables or fabric, by conveyance through steam chamber 4, the textile 1 is projected onto the conveyor belt 17 from air nozzles 13 directed towards the chamber inlet 8 to form a gas shield thereat, a further set of nozzles 30 blowing air at the chamber outlet 9 to form a second gas shield thereat so as to maintain steaming conditions within the chamber. Elevated temperature conditions within the chamber are maintained by heated plates 22, 23, 24 and 31 adjacent the inlet and outlet, hot air formed being removed by suction hoods 25 and 32. The projecting nozzles 13 are transversely reciprocated to lay the textile down in a zig-zag manner [see Fig. 2 (not shown)].
Patent GB-891872-A (GB)
Title: Improvements in or relating to recording systems
IPC: G11C7/02
Filed: 1960-12-21
Abstract: 891,872. Errors checking. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 21, 1960 [Dec. 24, 1959], No. 43854/60. Class 106 (1). Characters read from magnetic tape are translated, displayed on a cathode-ray tube and filmed, errors in the positioning of the characters or in their parties causing the generation, display and filming of special error characters. The tape is read at 10 and the characters are sent to a character register 13. A group of characters starts with positioning characters which are interpreted successively in registers 15 and 16. The registers control the voltage to a yoke 19 of a cathode-ray tube 20 which determines the position on a screen 30 of a single character selected by a slit 26 from the emissions of a photo-sensitive screen 25 on to which is directed the image of a matrix of characters 23. The alphanumeric characters following are then decoded in circuit 14 to cause direction of the required emission from screen 25 to slit 26. The characters are positioned automatically on the screen one space to the right of the preceding character until an end of line character when the following character is positioned in the left-hand position of the following line. An end of record character stops the display on tube 30 and causes a new frame of the film in camera 31 to be exposed. As each character leaves register 13 a parity check on both the number of bits in a line of the record and in a column is made in circuits 106, 107. Detection of an error leads to the setting of triggers which cause signals to be sent to terminals 129 or 132 to cause a horizontal or vertical error character to be displayed on screen 30 to the left of the line in which it was found. An inadmissible position character causes the apparatus to stop and an error character to be printed to the left of the first line of the group in which it occurs. The process may be restarted by the operator after this has been done. Specification 835,126 is referred to.
Patent GB-1080646-A (GB)
Title: An improvement in or relating to mowing machines
Inventor: BRADE JAMES NEVILLE
IPC: A01D75/18
Filed: 1964-10-29
Abstract: The subject matter of this Specification is included in Specification 1,080,645.