baber/WOPTO huggingface dataset:
Patent GB-995060-A (GB)
Title: Improvements in or relating to filter gas cells
IPC: H03L7/26
Filed: 1963-09-27
Abstract: 995, 060. Photo-electric waveform generators. SPACE TECHNOLOGY LABORATORIES Inc. Sept. 27, 1963 [Oct. 8, 1962], No. 38183/63. Heading G1A. [Also in Divisions G2 and H3] An optical filter gas cell 28, Fig. 4, which contains a resonant medium adapted to absorb energy of electromagnetic radiation of a predetermined frequency, has a heat sink 35 located within the cell for preventing condensation of the resonant medium on the transparent walls of the cell. As shown, applied to a frequency standard, an optical pumping lamp 27 containing Rb 87  operates at a temperature between 103‹C., and 115‹C., by virtue of heating coils 32, the two frequencies emitted passing through cell 28, containing Rb 85  which filters out one of the frequencies, to a gas pumping cell 29 containing Rb 87  and operating at a temperature of 40‹-50‹C. by virtue of heating coils 34. The light detector 31 continuously monitors the light passing through the cell 29 in order to maintain a constant output frequency and this is disturbed if Rb 85  condenses on the transparent walls of filter cell 28, operating at 70‹C. by means of heating coils 33, due to cooling by the adjacent pumping cell 29. By providing a tungsten probe 35 connected by thermal conductor 37 to a lower temperature point, any condensation taking place in the cell 28 occurs on this heat sink 35. The frequency standard, Fig. 3, comprises a microwave cavity 13 transverse of the gas pumping cell 12, and tuned to the transition frequency of 6, 834 mc/sec., the microwave energy fed into cavity 13 being frequency modulated at 107 c/s by oscillator 16. Synchronous detector 17 compares the 107 cycle output from amplifier 15 fed from light detector 14, with the output of oscillator 16 to generate an error signal which controls a voltage controlled oscillator 18. The output signal is fed from V.C.O. 18 through a buffer amplifier 19. The V.C.O. 18 also feeds a multiplier 20, phase modulated by oscillator 16, controlling a varactor 21 which couples the 6, 834 mc/sec. signal into the microwave cavity 13.
Patent GB-1015746-A (GB)
Title: Improvements in or relating to portable and flexible paving strips
IPC: E01C5/12
Filed: 1963-09-28
Abstract: 1,015,746. Coated sheet material. LIMEHOUSE PAPERBOARD MILLS Ltd., L. HOAD, S. C. CRONAN, and R. H. NELSON. Aug. 20, 1964 [Sept. 28, 1963], No. 38314/63. Heading B2E. [Also in Division B5] A flexible paving strip comprises a flexible backing 1 impregnated with a bituminous base binder 2, an aggregate 4 suitable for use as a paving surface on one side of the flexible backing and held in position thereon by the binder, and a flexible undercover 3 secured to the undersurface of the flexible backing. The flexible backing may be a fabric of natural and/or synthetic fibre, e.g. hessian. The undercover may be secured to the flexible backing by the bituminous base binder. The aggregate may be a collection of crushed mineral particles, non-abrasive particles, e.g. rubber, or cork, or a synthetic decorative material. The undercover may be made of paper or flexible plastic.
Patent GB-901234-A (GB)
Title: Improvements in or relating to electromagnetic clutches
IPC: F16D27/09
Filed: 1960-11-08
Abstract: 901,234. Positive clutches. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. Nov. 8, 1960 [Nov. 14, 1959], No. 38392/60. Class 80 (2). In an electromagnetic positive clutch of the kind wherein clutch teeth 7 fast with an armature 3 are moved axially into engagement with clutch teeth 6 on an electromagnet 2 keyed to a driving-shaft 1, the electromagnet 2 and/or armature 3 are/ is so shaped to provide an air gap 8 between the electromagnet and armature when the clutch is engaged. As shown, the armature is tapered so that on engagement it only abuts the magnet adjacent to the shaft 1. In Fig. 2 (not shown) the armature is formed as a parallel sided disc with an annular projection adjacent to the shaft 1. In Fig. 3 (not shown) a ring of non-magnetic material is partially inserted into the magnet body and on engagement the armature only abuts the ring. In Fig. 4 (not shown) a non-ferrous ring of foil is attached to the armature. The air gap provided may be between a few thousandths of an inch to about one-hundredth of an inch.
Patent GB-814844-A (GB)
Title: Improvements in or relating to hydraulic variable pitch propellers
Inventor: CHILMAN JOHN ALFRED
IPC: B64C11/38
Filed: 1956-12-18
Abstract: 814,844. Variable pitch propellers. ROTOL Ltd. Dec. 3, 1957 [Dec. 18, 1956], No. 38600 /56. Class 114. A propeller having a double acting hydraulic motor (not shown) for adjusting the pitch of the propeller blades, in the pitch coarsening sense by hydraulic fluid under pressure supplied to the coarse pitch side of the motor through a coarse pitch fluid conduit 10, 10a and, in the pitch fining sense by hydraulic fluid under pressure supplied to the fine pitch side of the motor through a fine pitch fluid conduit 11, the coarse pitch fluid conduit being used as a drain conduit when fluid under pressure is supplied through the fine pitch fluid conduit and vice-versa, has a non-return valve 14 in the coarse pitch fluid conduit 10, 10a closable to prevent exhaustion of hydraulic fluid from the coarse pitch side of the pitch change motor through said coarse pitch fluid conduit, and holding means 25 operable to hold the non- return valve open so long as the pressure in the fine pitch conduit is maintained above a predetermined value not greater than the minimum fine pitch fluid pressure required to adjust the blades of the propeller in the pitch fining sense. Pressure fluid in fine pitch conduit 11 acts through a branch conduit 22 to move a piston 26 against the action of a spring 27, thereby displacing the piston rod 25 to lift the valve 14 against the action of its spring 18.
Patent GB-1310142-A (GB)
Title: Buoyant offshore structures
IPC: B63B35/44
Filed: 1970-08-11
Abstract: 1310142 Offshore structures TRANSWORLD DRILLING CO 11 Aug 1970 [1 Dec 1969] 38672/70 Heading E1H A buoyant hull 12 carries a platform 24 for a drilling derrick 26 and is supported above the water when in situ by buoyant columns 14, 16, 18, 20. Each column can be flooded for ballasting purposes and can be locked or moved vertically and independently relative to the hull by mechanisms in housings 30, 32, 36, 38. A buoyancy tanks 46 are secured to the foot of each column. Frameworks 40, 42 connect the housings 36, 38 to the hull. As shown in Fig. 2, while being towed or self-propelled to or from the site the structure floats with the hull and the tanks in the water. The structure may be prevented from drifting when in situ by lines 44 or propelling means (not shown). As shown in Fig. 6 the frameworks may be modified so that the tanks on the columns 18, 20 can be above the water so as to reduce drag when the structure is in transit. (For Figures see next page)
Patent GB-365286-A (GB)
Title: Improved means for opening hinged moulds for pressing gramophone records and the like
IPC: B29C43/02
Filed: 1930-12-23
Abstract: 365,286. Moulding gramophone records &c. WHITEHEAD, A. J., 6, Sandringham Court, Maida Vale, London. Dec. 23, 1930, No. 38700. [Class 87 (ii).] In a hydraulic press for moulding gramophone records and the like, means are provided for opening the book-form moulds positively and automatically on withdrawal from the press. In the illustrated form in which the prime mover c reducing-gear d, hydraulic pump e and distributing valves f are all mounted on a common baseplate to form a complete unit, the book-form moulds are moved into and out of register with the ram on lateral guides i and the hinged covers k are raised automatically at the end of the run-out, either by wedges p or by a cable u leading to a tensioned spring w. Heating units m, m<1> are provided to contact with the mould during the pressing operation.
Patent GB-1166569-A (GB)
Title: Improvements in or relating to Nuclear Reactors
IPC: G21C11/02
Filed: 1967-08-23
Abstract: 1,166,569. Reactors. GULF GENERAL ATOMIC Inc. 23 Aug., 1967 [6 Sept., 1966], No. 38838/67. Heading G6E. In a nuclear steam generating system a helium gas cooled fast breeder reactor is mounted within a prestressed concrete pressure vessel together with steam generating heat exchangers. The concrete immediately surrounding the core and exchangers contains cooling tubes. Emergency control is effected by rapid flooding of the core with water containing a neutron absorber. The core is suspended at its upper surface and is surrounded by a thermal shield formed of concentric cylinders spaced apart to form a coolant gas flow duct. The core is mounted within a control compartment in the pressure vessel with the heat exchangers in compartments at the sides of control compartment and separated therefrom by concrete shields. The temperature of the heat exchanger compartments is controlled by an auxiliary gas flow, bled from the main coolant stream, cooled in an external cooler and then returned to the compartment. The walls of the exchanger compartments, being cool, thus function as a heat sink during shut-down conditions.
Patent GB-1483052-A (GB)
Title: Electric cables
IPC: H01B3/24
Filed: 1973-08-17
Abstract: 1483052 Electric cables PIRELLI GENERAL CABLE WORKS Ltd 9 Aug 1974 [17 Aug 1973 28 March 1974 21 May 1974] 39060/73 13862/74 and 22670/74 Heading H1A [Also in Division H2] An electric cable comprises at least one conductor insulated by lapped paper tapes, the cable being enclosed by a tubular sheath. A stable, homogeneous insulating liquid over the range - 10‹ to 85‹ C. at atmospheric pressure fills the cable and consists of, or includes as fire retardant at least one aliphatic halocarbon containing 2-4 carbon atoms per molecule, e.g. perchloroethylene, pentachloroethane, hexachlorobutadiene. If a solvent is present this may be an alkylbenzene oil for example. A known insulating liquid may be inserted in the cable during assembly, the toxic fire retardant being added to or substituted for that liquid later, e.g. after laying. A stop or straight joint, a sealing end or an oil pressure tank when used with the cable may also be filled with the insulating liquid.
Patent GB-1349393-A (GB)
Title: Block copolymer of a vinyl monomer
IPC: C08G77/442
Filed: 1971-08-20
Abstract: 1349393 Organosilicon block copolymers DOW CORNING CORP 20 Aug 1971 [25 Aug 1970] 39125/71 Headings C3T and C3P A block copolymer having a M.wt. greater than 3000 comprises (a) 2-98 p.b.w. of at least one block of the formula and (b) 2-98 p.b.w. of at least one block of the formula-[(CF 3 CH 2 CH 2 )(CH 3 )SiO] y -, block (a) being bonded to block (b) through Si-C bonds thus: -CH 2 CR<SP>1</SP>G[Si(CH 3 )(CH 2 CH 2 CF 3 )O]-, any block (a) not bonded to block (b) being bonded to R- and any block (b) not bonded to block (a) being bonded to -SiR<SP>11</SP> 2 Z, in which R = C 1-30  monovalent hydrocarbon (h.c.) radical, R<SP>1</SP>=H or CH 3 , R<SP>11</SP> = C 1-18  monovalent h.c. or halo h.c. radical, R<SP>111</SP> = C 2-30  divalent h.c. radical, Z = R<SP>11</SP>, OH, or monovalent hydrolysable radical, G = -CH = CH 2 , -C(CH 3 ) = CH 2 , -CH = CHCH 3 , -C 5 H 4 N, -COOCH 3 , -C # N, -C(O)NR<SP>11</SP> 2  or -COOCH 2 CH 3  radical or a monovalent aromatic radical having 1-3 benzenoid rings with up to 3 C 1-6  aliphatic organic substituents selected from alkyl, cycloalkyl and alkoxy radicals, no aliphatic organic substituent on said benzenoid ring bonded to the group and which is ortho to the group having more than one carbon atom, x and y each being greater than 20. The block copolymers are advantageously prepared by polymerizing a vinyl monomer of the formula CH 2  = CR<SP>1</SP>G with a solution of an organolithium compound, then adding sym-tris-3,3,3-trifluoropropyltrimethylcyclotrisiloxane, in an amount sufficient to provide at least one cyclotrisiloxane molecule for each terminal Li atom, but not exceeding 40% of the cyclotrisiloxane to be added; holding the resulting mixture at a temperature between its freezing point and reflux temperature until the characteristic colour of Li-terminated vinylic polymers has disappeared, adding the remainder of the siloxane and terminating polymerization by adding acetic acid or an organochlorosilane of the formula: ZR<SP>11</SP> 2 SiCl. Suitable vinyl monomers include butadiene, isoprene, 2,3-dimethylbutadiene, 1,3-pentadiene, 4-vinyl pyridine, methyl methacrylate, ethyl acrylate, acrylonitrile, methacrylonitrile and acrylamide, in addition to the well-known aromatic compounds defined above. The organolithium compound may be of the formula RLi or LiR<SP>111</SP>Li which respectively yield block copolymers of the formulae and
Patent GB-1135132-A (GB)
Title: Improvements in or relating to desalination plant
IPC: C02F1/04
Filed: 1966-09-01
Abstract: 1,135,132. Desalination of water; multipleeffect distillation. J. A. R. FIFIELD. 31 Oct., 1967 [1 Sept., 1966], No. 39189/66. Heading B1B. Potable water is produced from saline water by pumping it into the upper end of a helical channel of closed cross section, the lowermost turn 11a of which is heated by circulation of hot fluid .through heat-exchange tubes 23a; the steam evolved from the saline water 23 in the lowermost turn passes through perforated pipes 26b into the heat-exchange tubes 23b and condenses therein, causing boiling of the saline water in the turn 11 b of the helical channel, this multiple-effect action being continued upwards through the other turns of the helical channel. Condensate, i.e. the required potable water, is withdrawn from heat-exchange tubes 23b, 23c ... through lines 17b, 17c ... into a common vertical pipe 18. Residual brine is pumped out of the lower end of the helical channel. The pressure in the vapour-space at the upper end of the channel is maintained below atmospheric pressure, e.g. at 0.5 p.s.i.a., while the pressure in the lower end is maintained at atmospheric pressure or above. The helical channel may be divided into sections by metal-mesh or by impervious partitions which have apertures below the surface of the saline water; and the condensate manifolds 25 may be connected to the vertical pipe 18 at suitably graded pressure points to give automatic pressure control down the helical channel. Effluent brine may be recirculated from the lower end of the helical channel into different turns of the helical channel, the brine forming liquid curtains in the turns in order to disentrain saline spray from the steam. The lowermost heat-exchange tubes 23a may be heated by steam or hot gas from a nuclear reactor 20. Two or more helical channels may be disposed side by side. The channels) and the supporting structure may be made of reinforced concrete.
Patent GB-1464680-A (GB)
Title: Benzoxazine derivatives and herbicidal compositions containing the same
IPC: C07D265/16
Filed: 1975-09-24
Abstract: 1464680 Benzoxazine derivatives CHEVRON RESEARCH CO 24 Sept 1975 [27 Sept 1974] 39199/75 Heading C2C Novel benzoxazine derivatives of general formula where X is F, Cl or Br; each Y is H, F, Cl or Br; R<SP>1</SP>, B<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are each H or C 1-6  alkyl; each B<SP>6</SP> is Cl, Br or C 1-6  alkyl and n is 0, 1 or 2, are prepared by reacting a benzoxazine of general formula with a haloacetyl halide XY 2 CCOX in the presence of an acid acceptor. Amongst the examples the compounds 1-chloroacetyl-2,4,4,8- tetra - methyl - 1,2 - dihydro - 4H - 3,1 - benzoxazine and 1-bromoacetyl-1,2-dihydro-4H-3,1- benzoxazine are prepared. α,α - Dimethyl - 2 - aminobenzyl alcohol is produced by reacting methyl 2-aminobenzoate with methyl magnesium iodide. 4,4 - Dimethyl - 1,2 - dihydro - 4H - 3,1 - benzoxazine is obtained from α,α-dimethyl-2-aminobenzyl alcohol and H.CHO. 2,2,4,4 - Tetramethyl - 1,2 - dihydro - 4H - 3,1- benzoxazine is similarly produced, using acetone in place of H.CHO.  Herbicidal compositions comprise a compound of Formula I is active ingredient together with an inert carrier.
Patent GB-366231-A (GB)
Title: Improvements relating to grinding or abrading machines
IPC: B24B53/053
Filed: 1930-12-31
Abstract: 366,231. Trueing abrasive wheels. CASH, J., of Denbigh Engineering Co., Ltd., Horseley Heath, Tipton, Staffordshire. Dec. 31, 1930, No. 39242. [Class 60.] A device for trueing the wheel 5 of a grinding or abrading machine comprises a dressing wheel 10 carried by a member 8 which is traversed across the wheel by means of a screw 7 operated by a handle 13 and having bearings in a bracket 6 secured to the machine base. The dressing-wheel, which is normally held by gravity clear of the grinding-wheel, is brought into operative position by means of a screw 12 acting through a pivoted bar 11 on the member 8. In a modification, the bar 11 may be dispensed with. In further modifications, a number of dressing-wheels may be mounted on the spindle 9 and the shaft 7 may have a handle at each end.
Patent GB-937855-A (GB)
Title: Process for the production of resole resin foams
Inventor: PHILLIPS THOMAS LEIGHTON
IPC: C08J9/06
Filed: 1960-11-19
Abstract: A process for the production of a structural foam comprises mixing a resole resin, a second resin, an acid curing catalyst and a finely divided metal capable of reacting with the acid to produce hydrogen. The "second resin" is a resin which is compatible with the resole resin, is capable of being cured to a cross-linked product under the action of the acid catalyst and has a different rate of cure from that of the resole resin.  It can be a different resole resin or a urea-formaldehyde or epoxide resin (containing at least one epoxide group per molecule). Hydrochloric and phosphoric are suitable acids and aluminium, magnesium and zinc are suitable metals.  In the examples the resole is made by reacting 1 mole of phenol with 2,1 moles of formaldehyde in the presence of sodium hydroxide, removing the water and neutralizing the catalyst.  Foams are prepared by (1) mixing resole, liquid urea-formaldehyde resin, methylated spirits, polyoxyalkylene derivative of sorbitol monolaurate (surface active agent) and aluminium powder and adding a mixture of concentrated hydrochloric and phosphoric acids; (2) a similar process in which epoxide resin (from bisphenol A and epichlorohydrin) replaces the urea-formaldehyde resin.ALSO:A process for the production of a structural foam comprises mixing a resole resin, a second resin, an acid curing catalyst and a finely divided metal capable of reacting with the acid to produce hydrogen.  The "second resin" is a resin which is compatible with the resole resin, is capable of being cured to a cross-linked product under the action of the acid catalyst and has a different rate of cure from that of the resole resin.  It can be a different resole resin or a urea-formaldehyde or epoxide resin. Hydrochloric and phosphoric are suitable acids and aluminium, magnesium and zinc are suitable metals.  In the examples the resole resin is made by reacting 1 mole of phenol with 2,1 moles of formaldehyde in the presence of sodium hydroxide, removing the water and neutralizing the catalyst.  Foams are prepared by (1) mixing resole, liquid ureaformaldehyde resin, methylated spirits, polyoxyalkylene derivative of sorbitol mono-laurate (surface active agent) and aluminium powder and adding a mixture of concentrated hydrochloric and phosphoric acids; (2) a similar process in which epoxide resin (from bisphenol A and epichlorohydrin) replaces the urea-formaldehyde resin.
Patent GB-1313077-A (GB)
Title: Elastic fluid operated rotary screw type engine
IPC: F01C21/10
Filed: 1971-08-25
Abstract: 1313077 Rotary screw motor VILTER MFG CORP 25 Aug 1971 [9 Sept 1970] 39954/71 Heading F1F In an elastic fluid actuated rotary screw motor, the admission of high pressure vapour to expansion chambers 15 via inlets 25, 26 located in rotors MR, FR, is controlled by two piston valves 40, 41 which have tapered feed ports 50 and which, in the inoperative position in which the ports 50 are out of register with inlets 25, 26, connect the expansion chambers 15 via ports 60, the interior of the rotors, and openings 30, to the exhaust chamber 33, to prevent the pressure in chambers 15 dropping below the exhaust pressure. High pressure fluid is supplied to a port 45 and is admitted to the interior 44 of the valves 40, 41 via an annular chamber 46 and apertures 48, and the valves are pressure balanced by connecting the chambers to the right of the valves by a line 10 to the exhaust outlet line 4. Rotation of the valves 40, 41 is prevented by pins 52a and the valves are connected together via rods 52 to operate in unison.
Patent GB-1084919-A (GB)
Title: Dryer control
Inventor: FINNEGAN FRANCIS
IPC: D06F58/38
Filed: 1964-10-01
Abstract: 1,084,919. Tumbler driers. TEXAS INSTRUMENTS Inc. Oct. 1, 1964, No. 40053/64. Heading F4G. A tumbler clothes drier comprises a rotatable drum 15, air heating means 19 which may be electric or gas, and sensing electrodes 31, 33 positioned for contacting and completing an electrical circuit through the tumbled clothes to measure the electrical conductivity or resistance for determining the dryness of the clothes and to terminate the drying action by actuation of a solid state switching device when the resistance of the current path reaches a predetermined level corresponding to a pre-selected level of moisture content of the clothes. The circuit includes means for varying the preselected level of moisture content over a range between preselected upper and lower limits.
Patent GB-1359014-A (GB)
Title: Flameproof compositions and articles
IPC: C08G59/50
Filed: 1971-08-27
Abstract: 1359014 Flameproof compositions CHEMIE LINZ AG 27 Aug 1971 [2 Sept 1970] 40419/71 Headings C3B and C3R A flameproof composition comprises a mixture of a polyurethane resin or epoxy resin and melamine which is present at 0À66-3À0 parts by wt. per part by wt. of the resin. Conventional films, colouring agents and/or reinforcing fibres may also be present. The composition may be a foam.