baber/WOPTO huggingface dataset:
Patent GB-1073266-A (GB)
Title: Process for polymerizing olefin oxides and catalyst compositions therefor
IPC: C08G65/12
Filed: 1965-10-15
Abstract: Olefine oxides are polymerized in the presence of a catalyst composition comprising at least one organometallic compound containing a Group II or Group III metal and at least one carbonate or sulphate of a Group II or Group III metal. The olefine oxide may have the general formula <FORM:1073266/C3/1> where R1, R2, R3 and R4 are individually hydrogen, alkyl, vinyl, aryl, chloromethyl, bromomethyl, fluoromethyl, trifluoromethyl, halogen, allyloxymethyl or phenoxymethyl or R2 and R3 together form an alkylene bridge. The polymerization may be carried out in an inert diluent and at temperatures of from 0 DEG  C. to 200 DEG  C.  The catalyst composition may contain the organometallic compounds and the carbonates or sulphates in molar ratio between 1000/1 and 1/100, and the amount of catalyst composition used may provide 0.01 mol per cent of organometallic compounds based on olefine oxides. Examples relate to polymerization of propylene oxide; propylene oxide and allylglycidyl ether; propylene oxide and vinyl cyclohexene monoxide. Other olefine oxides mentioned are ethylene oxide, isobutylene oxide, butadiene monoxide, epichlorhydrin and styrene oxide.ALSO:A polymerization catalyst comprises at least one Group II or Group III organometallic compound and at least one Group II or Group III metal carbonate or sulphate.  The organometallic compound may be diethyl zinc, diphenyl zinc, triethyl aluminium. The carbonate or sulphate may be zinc carbonate, calcium carbonate, strontium carbonate, calcium sulphate, zinc sulphate, magnesium sulphate or aluminium sulphate.  The catalyst components may be present in any molar ratio between 1000:1 and 1:1000.  Examples relate to zinc carbonate + diethyl zinc; calcium sulphate + diethyl zinc.
Patent GB-997094-A (GB)
Title: Improvements in or relating to coating compositions and the like
Inventor: CAMERON DENNIS BLUMER
IPC: C04B28/26
Filed: 1960-12-20
Abstract: An aqueous suspension of zinc powder or zinc alloy powder incorporates a wetting agent and colloidal silica as a dispersing agent.  The suspension may be added to a solution of sodium or potassium silicate containing hydrochloric acid, to form a coating composition.  It may contain stabilizers to slow down the reaction between the zinc and the silicate.
Patent GB-929244-A (GB)
Title: Polymerisation of vinyl-aromatic compounds
Inventor: FLETCHER KENNETH LEONARD
IPC: C08F279/02
Filed: 1960-12-21
Abstract: Thermoplastic compositions are made by a process which comprises a first stage in which a solution of up to 25% by weight of a natural or synthetic rubber in a monovinyl aromatic compound is subjected to bulk polymerization to produce a prepolymer product containing not more than 40% by weight of polymerized monovinyl aromatic compound, followed by a second stage in polymerization is continued in aqueous suspension in the presence of a mixture of gelatine and a water-insoluble salt, e.g. calcium sulphate, oxalate, phosphate or carbonate.  Vinyl aromatic compounds specified are styrene, methyl and ethyl styrenes and chlorostyrenes.  Synthetic rubbers specified are butadiene-styrene and butadiene-acrylonitrile rubbers, cis-1,4-polybutadiene and polyisoprene, isobutylene polymers and ethylene-propylene copolymers.  A polymerization catalyst may be employed, e.g. benzoyl and di-tert. butyl peroxides and azobisisobutyronitrile.  Also present may be modifiers, e.g. dodecyl mercaptan, and plasticizers, e.g. dibutyl sebacate, dioctyl phthalate, butyl stearate and white oil.
Patent GB-1357260-A (GB)
Title: Electronic position display and control systems for production  machines
IPC: B26D7/00
Filed: 1972-09-22
Abstract: 1357260 Positioning control of machine tools R MOHR 22 Sept 1972 [22 Sept 1971] 44042/72 Heading G4H A control system for positioning the slide of a machine tool relative to the table comprises a coarse scale fixed to the table and having opaque markings photo-electrically scanned at 10, 11 so as to supply a series of coarse position pulses via a shaper 12 to a counter 13, and a fine scale consisting of the teeth 6 on a rim 14 of a wheel 4 forming part of a magnetic clutch assembly in the drive mechanism of the slide, which teeth are scanned magnetically as they rotate by a fixed sensor 7, which supplies fine position pulses via a shaper 15 to a counter 16, so that the counter 13 supplies information concerning whole units of position to a display 18 whilst the counter 16 supplies the tenths of a unit, the two counters being linked so that each pulse received at 13 will reset to zero the count at 16 to thereby obviate errors inherent in the mechanical coupling of the wheel 4 with the machine slide. The coarse scale may also be of a magnetic tape or a contact plate type and the desired position of the slide may be set in a further counter, not shown, and the motion stopped when this is equalled by the count at 18.
Patent GB-1512158-A (GB)
Title: Push-rod conveyors
IPC: B65G25/04
Filed: 1976-10-25
Abstract: 1512158 Static seals MAYFRAN GmbH 25 Oct 1976 [27 Oct 1975] 44301/76 Heading F2B [Also in Division B8] A push-rod conveyer comprises sections 1a, 1b joined together in a liquid tight manner by means of a screw connector 5, 6, 7 operating axially against the resilience of a sealing member 8 located near a gap 11 separating the sections and between L-section members 9, 10, mounted on the outside of the sections la, 1b. The emboidment shows the screw connector as a number of assemblies located around the inner periphery of the trough as best seen in Fig. 1 (not shown), each comprising a chambered block 5, a square block 6 and a socket screw 7.
Patent GB-996042-A (GB)
Title: Motion picture projector
IPC: G03B19/18
Filed: 1963-11-11
Abstract: 996,042. Cine projectors. EASTMAN KODAK CO. Nov. 11, 1963 [Nov. 9, 1962], No. 44327/63. Heading G2E. The film in a cine projector is driven forward along one path and is rewound along a different path by rewind means which is moved to its operative position in response to the absence of film in the above projection path. During projection, the film leaves toothed hub 15 of reel 14 and passes through gate 19, driven by sprockets 17, 171, film guides 26, 27 being provided. A film duct 28 of rectangular cross-section then leads the film to guide mechanism 29 and to take-up reel 21. A further duct 31 provides the return path to reel 14 and imparts a twist to the film, the film being rewound by mechanism 44 comprising a shaft 45 driven in either direction by the selective engagement of the disc 46 on the shaft with one of the axially spaced rubber drive rollers 47. Rollers 47 are secured to sleeve 40 sliding on and keyed to the drive shaft 48 of motor 49. Solenoids 54, 55 act on armature 56 to which is secured a spring loaded pivoted lever 57 which moves sleeve 40 up or down. Toggle arms 62 are pivoted at the end of shaft 45 and support a rewind drive roller 64 driven through gears 67, 68. Metal disc 69 on gear 68 is frictionally engaged peripherally by rubber or like surfaced leaf spring 71 secured to one of the arms 62. The rotation of shaft 45, and the resulting friction force on spring 71, therefore causes toggle arms 62 and roller 64 to swing away from idler roller 65. The rewind mechanism is controlled by a microswitch 75 whose actuating element 77 extends into film passage 30 and rests on the film or, in the absence of film, enters slot 79 in the "C" position and so energizes the rewind solenoid 55. An arm 81 is pivoted to the block 34 of guide 29 and is spring-urged towards the film and initially locks element 77 in a raised "A" position by means of shoulder 84, as in Fig. 1, until the leading end of the film lifts arm 81 and releases element 77 to rest on the film in the "B" position. When all the film has passed, arm 81 falls into slot 79 to obstruct passage 30 and form a guide to deflect film into passage 38 towards the supply reel 14. A linkage system allows the microswitch to be returned to the "A" position by a knob 87. A second microswitch 97 is operated by an actuating element 96 on which is carried a roller 95 which enters duct 31. The tension of the re-winding film thus operates microswitch 97 to de-energize solenoid 55 and allow the drive means to take up its neutral position with rollers 47 disengaged. With no resistance, the supply reel 14 may therefore be driven at high speed for the re-wind.
Patent GB-949954-A (GB)
Title: A new or improved method of or apparatus for producing a liquid spray
Inventor: STEEN WILLIAM MAXWELL
IPC: B05B1/26
Filed: 1960-12-23
Abstract: 949,954. Spray producers. A.P.V. CO. Ltd. March 23, 1962 [Dec. 23, 1960], No. 44329/60. Heading B2F. Spray is produced through opening 2, Fig. 2, when two columns of liquid under pressure in duct 1 collide. When pressures on the columns are equal the spray axis is as indicated at 5. Spray may be oscillated between 6 and 7 by submitting each column to a pulsing pressure such that a phase difference exists between the pulsations applied to each column. Pulsations may be achieved by means of valves 10, 11 operated sequentially to produce change in the pressure of one column relative to the other or by a rotary valve 8 which has the same effect.
Patent GB-1063866-A (GB)
Title: Cages for cylindrical rollers in roller bearings
IPC: B21D53/12
Filed: 1964-10-30
Abstract: 1,063,866. Bearings. W. SCHAEFFLER, and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER OHG]. Oct. 30, 1964 [Nov. 2. 1963], No. 44344/64. Heading F2A. A cage for cylindrical rollers (10), Figs. 4 to 6 (not shown), in a roller bearing is made from a rectangular strip of sheet-metal whose longitudinal edges are folded to form rims (2) on either side of a plurality of slots (4), Fig. 3 (not shown), which are punched in the strip to form bars (5) for guiding the rollers, each of the bars having a central portion (7) cranked or offset radially inwardly relative to the axis of the bearing to retain the rollers in the slots. The strip is bent into cylindrical form and its abutting ends are attached to each other by welding. The edges (11) of the bars may be shaped to match the cross-sectional profile of the rollers.
Patent GB-1483288-A (GB)
Title: Progressively or continuously cycled mould for forming and discharging a fine crystalline material
IPC: B22D11/06
Filed: 1975-10-29
Abstract: 1483288 Casting molten refractory material NORTON CO 29 Oct 1975 [8 Nov 1974] 44613/75 Heading B5A A device for casting thin plates from a molten refractory material, such as fused aluminazirconia, above 1700 C. comprises a series of metal mould plates 21 one face of each of which carries a recess 61, the plates being forced into contact to define a series of mould cavities during passage under a casting furnace 5 and being moved apart to allow removal of the cast plates after passage under the furnace. The plates are interconnected by a pair of endless chains 25 which pass through recesses 44 at the edges of the plates and are driven along rails 23 under the furnace by a driving drum 14 having teeth 17 engaging corresponding recesses in the plates. After passage under the furnace, the plates are received by a second, non-driving drum 15 driven at a slower peripheral speed than the driving drum. The second drum and the rails combine to resist the driving motion of the driving drum thus causing the plates to bunch tightly together under furnace. Passage of the plates around the second drum spreads out the plates and the cast plates are knocked from their recesses by the action of a spring biased bar 36 into a water filled trough 41. The drums are driven through suitable chains from a common drive motor 9.
Patent GB-1104644-A (GB)
Title: Preparation of acrylonitrile and methacrylonitrile
IPC: B01J23/92
Filed: 1966-10-06
Abstract: Acrylonitrile or methacrylonitrile is obtained by the catalytic dehydrogenation of propionitrile or isobutyronitrile respectively in the gaseous phase at a temperature of 300-700 DEG  C. in the presence of a catalyst composition consisting of or comprising stannous oxide. The stannous oxide may be supported on a carrier, e.g. silica gel, alumina, carbon or alumina-silica gel, and the catalyst may be prepared, for example, by reacting a stannous halide with silica gel in an organic solvent such as an ester, ether or ketone at 30-350 DEG C., suitably for 3-30 minutes, washing the product with the said solvent, hydrolysing the stannous halide-silica reaction product with aqueous alkali and removing the alkali.  The stannous oxide catalyst may also be deposited on a carrier by an immersion technique, and other tin derivatives, e.g. nitrates, hydroxides, acetates and carbonates, capable of yielding stannous oxide under the reaction conditions may be employed.  The catalyst may be treated prior to reaction at 300-700 DEG  C. and it may be regenerated when its activity is reduced by heating to 250-700 DEG  C. in the presence of oxygen, air, steam or carbon dioxide and is then preferably treated with hydrogen. The saturated nitrile starting material may be diluted with an inert gas, e.g. nitrogen, and it may also contain an oxygen-containing gas (for catalyst regeneration); the space velocity of the reactant nitrile is preferably 20 to 100,000 hr-1.ALSO:A catalyst composition comprising a stannous oxide-silica complex is obtained by reacting a stannous halide with silica gel in an organic solvent at 30-350 DEG C and hydrolysing the stannous halide-silica reaction product with aqueous alkali.  The reaction may be effected for a period of 3-30 minutes in, e.g. an ester, ketone or ether as the organic solvent, and the catalyst may have a -Si-O-Sn-O- linkage onto the surface of the silica carrier. The catalyst activity, after reaction, may be regenerated by heating to 250-700 DEG C in the presence of oxygen, air, steam or carbon dioxide and is then preferably treated with hydrogen.
Patent GB-449213-A (GB)
Abstract: 449,213. R÷ntgen-ray tubes. PIOT, E., 11, Rue Denis Poisson, Paris. Aug. 7, 1935, No. 22333. Convention date, Aug. 8, 1934. [Class 39 (i)] [See also Group XX] A R÷ntgen-ray tube 1, Fig. 2, has a large anticathode 10, in front of which rotates a perforated lead cylinder 11, surround ing the tube. In a modification, Fig. 4, a tube 1 has a rotating anticathode system 14 .with multiple foci 15 and an eccentric elongated spiral cathode 17. The tube is surrounded by a rotating perforated lead cylinder 12.
Patent GB-1066129-A (GB)
Title: Lift truck
IPC: B66F9/075
Filed: 1965-10-25
Abstract: 1,066,129. Masted lift trucks; stowing on vehicles. E. WINTER, A WINTER, E. WAGNER, R. WAGNER, F. KEIM, and L. WAGNER, [trading as FIRMA ERNST WAGNER APPARATEBAU]. Oct. 25, 1965 [Nov. 4, 1964], No. 45030/65. Headings B8E and B8H] In a power-driven masted lift truck in which either the fork 10 is connected to the lifting carriage 3 by a reach mechanism, Fig. 2, or the mast is movable longitudinally of the truck by a reach mechanism, Fig. 3 (not shown), the arrangement is such that the drive motor 7 is switched-off and/or braked if the reach mechanism is not fully retracted. In both embodiments the lifting carriage 3 is connected to an endless chain 4 driven by a reversible motor 5. In the Fig. 2 embodiment, the fork 10 is longitudinally movable on a fork 9 by an endless chain 11 driven by a motor 12. When a switch 13 in the circuit of motor 12 is released on movement of the fork 10 from its rearmost position, the current supply to the drive motor 7 is cut-off. A switch 14 for the motor 12 and a switch 15 on the control lever 8 for the motor 7 are arranged such that only one of them at a time is in the " on " position. The truck may be supported beneath the rear of a lorry, Fig. 1 (not shown), by inserting the fork between the floor of the lorry and straps (20) mounted beneath the floor of the lorry and driving the motor 5 in the lowering direction to raise the chassis of the truck from the ground.
Patent GB-1468981-A (GB)
Title: Method of removing and recovering water and aromatic hydro carbons from a gas stream
IPC: C07C15/02
Filed: 1974-10-17
Abstract: 1468981 Purifying gas streams BLOCK SIVALLS & BRYSON Inc 17 Oct 1974 [17 Oct 1973] 45074/74 Heading C5E [Also in Division B1] A process for the removal and recovery of water and aromatic hydrocarbons from a gas stream, e.g. of natural gas, comprises passing the gas 16 countercurrently to a liquid absorbent 62 in a contactor 12, the resultant stream of water and aromatic-hydrocarbon-rich absorbent 20 being heated in a reflux column 32 to vaporize the water and aromatic hydrocarbons and reconcentrate the absorbent, the vaporized materials being led off through line 64 and the reconcentrated absorbent being returned to the contactor 12. The absorbent stream 20 from the contactor is preheated at 36, 46 before passing into reflux column 32, and the water- and aromatic-hydrocarbon-free absorbent is concentrated in reboiler 26 before passing via line 48, accumulator 44 and lines 54, 60, 62 to the contactor 12. The vaporized water and aromatic hydrocarbons pass via line 64, heat exchanger 66 and line 70 to a separator 68. In a modification (Fig. 2, not shown), part of the absorbent from reboiler tank 28 is further concentrated by passage therethrough of a dry stripping gas before being recirculated to line 62. The remaining part of the absorbent from tank 28 is fed to the contactor at a point intermediate of the gas entry 16 and the absorbent entry 62. The liquid absorbent may be an aqueous solution of triethylene glycol or tetraethylene glycol. The examples relate to the separation of benzene from natural gas.
Patent GB-1526246-A (GB)
Title: Method of aligning liquid crystalline materials and its application to helical nematic display cells
IPC: C08G65/22
Filed: 1975-10-30
Abstract: 1526246 Modulating light THOMSON-CSF 30 Oct 1975 [31 Oct 1974 13 Dec 1974] 45099/75 Heading G2F In a twisted nematic liquid crystal display device comprising a liquid crystal film located between two glass plate electrodes, the elongated molecules of the film are given orientations parallel to the planes of the electrodes by depositing on each electrode a polymer of para-xylylene, methylmethacrylate, methylsiloxane or 3-(α, #-epoxy-γ-propoxy) -propyl-trimethoxysilane, or a copolymer of styrene and divinylbenzene, using one of the following methods: deposition by electric charge from the gas phaser, deposition by thermal effect from the gas phase, deposition by transfer of a homogeneous film to the electrode, followed by polymerization by heating, or deposition by drawing the electrode through a solution of the prepolymer, followed by polymerization by heating, the polymer deposit then being rubbed.
Patent GB-1062557-A (GB)
Title: Stabilized cake batter systems
IPC: A21D2/14
Filed: 1964-11-05
Abstract: In a cake batter emulsion comprising flour, sugar and water, there is incorporated 0.5-16% wt. of the shortening of an alpha-phase crystal tending emulsifier containing in the molecule at least one fatty acid radical of 12-22 carbon atoms and at least one free hydroxyl group, 0.1-8% wt. of the shortening of a high temperature batter stabilizer, and dissolving a said emulsion 0.001-1% wt. of the emulsion of a non-toxic, water-soluble, polyvalent metal ion salt.  A dry cake mix suitable for the above contains 0.00165-1.65% wt. of the mix of the non-toxic water-soluble, polyvalent metal ion salt.  A shortening composition comprises a glyceride base, 0.5-16% wt. of the alpha-phase crystal-tending emulsifier, 0.1-8% wt. of the batter stabilizer, and 0.013-13% wt. of the polyvalent metal ion salt.
Patent GB-1016306-A (GB)
Title: Double cylinder circular stocking knitting machine
IPC: D04B15/06
Filed: 1963-11-19
Abstract: 1,016,306. Knitting machines. ELITEX, SDRUZENI PODNIKU TESTILNIHO STROJIRENSTVI. Nov. 19,1963 [Nov. 19,1962], No. 45527/63 Heading D1C. A double cylinder circular knitting machine with arcuate sinkers has upper and lower sinker cam rings 6, 7 mounted on the lower cylinder, two spring actuated cam parts 15, 15<SP>1</SP> being mounted in the upper cam ring at the point of maximum knock over of the knitting and above and outside the knock over points of the two stitch cams 18,19 required for reciprocatory knitting. As shown ring 7 has grooves 14, 14<SP>1</SP> in which the cam parts 15, l5<SP>1</SP> slide and are biased by compression springs 21, 21<SP>1</SP>.
Patent GB-1515870-A (GB)
Title: Jetter cups for milking apparatus
IPC: A01J7/00
Filed: 1975-11-04
Abstract: 1515870 Cleaning milking machines P W ALLEN 4 Feb 1977 [4 Nov 1975 31 March 1976] 45813/75 and 13073/76 Heading AIM A jetter cup, into which a teat cup is inserted for washing is moulded from synthetic rubber and has a mouth 310 formed by a thickened area 410 of the body 110, this reinforcing of the mouth ensuring that it will not weaken under repeated flexing due to insertion and removal of the teat cups. In order to accommodate teat cups of different sizes a smaller internal mouth 511 may be provided, smaller teat cups entering the mouth 511 and larger cups entering mouth 310 only.
Patent GB-1477133-A (GB)
Title: Refractory products
IPC: C04B28/34
Filed: 1974-05-29
Abstract: 1477133 Refractories PLIBRICO CO Ltd 29 May 1974 [1 Oct 1973] 45818/73 Heading C3N A method of producing refractory products comprises mixing an aluminoxy or aluminosilicate refractory aggregate and orthophosphoric acid, causing or allowing the mixture soformed to be degassed, then adding a setting agent for the mixture, forming the mixture into the desired shape and causing or allowing the mixture to set. The aggregate may be alumina, bauxite or a thermally insulating expanded fireclay. Degassing generally takes 10-48 hours. The setting agent may be an alkaline earth metal oxide or alkaline earth metal silicate, e.g. periclase, magnesia or wollastonite. Spinels may also be used. The specific examples describe methods where the aggregate is a mixture of calcined bauxite, kyarite and calcined alumina (1); a mixture of alumina and calcined alumina (2); and a mixture of expanded fireclay grog, "Molochite" (Registered Trade Mark), ball clay and calcined bauxite (3) and the setting agent in all examples is magnesia.
Patent GB-1438335-A (GB)
Title: Production of diesters of dicarboxylic acids by electrochemical condensation of 'onoesters of dicarboxylic acids
IPC: C25B3/29
Filed: 1973-10-03
Abstract: 1438335 Dicarboxylic acid diesters BASF AG 3 Oct 1973 [4 Oct 1972] 46201/73 Heading C2C [Also in Division C6] Diesters of dicarboxylic acids (6-18C) and alcohols (4-12C) are prepared by electrochemical condensation of a monoester of a dicarboxylic acid (4-10C) and an alcohol (4-12C). A 20-60% weight solution in methanol, containing 0À2 to 5% by weight of water is used with a basic compound such that the degree of neutralization is from 1 to 30 mole per cent. Monoesters of glutaric, adipic, pimelic, suberic, azelaic and sebacic acids, e.g. monobutyl, isobutyl, 2-butyl, pentyl, hexyl, cyclohexyl, octyl, 2-methylhexyl-(5) 2-ethylhexyl, decyl, or dodecyl esters may be used, in particular the 2-ethylhexanol monoester of adipic acid and the basic compounds may be sodium carbonate, methylate, hydroxide or amines. Conventional cells with for example platinum anodes may be used. Examples describe the electrolysis of mono-2-ethylhexyl adipate and glutarate to the di-2-ethylhexyl sebacate and suberate.