baber/WOPTO huggingface dataset:
Patent GB-647956-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L9/10
Filed: 1947-08-07
Abstract: 647,956. Suction cleaners. HOOVER, Ltd. Aug. 7, 1947, No. 21543. Convention date, Aug. 9, 1946. [Classes 8(i) and 8(ii)] A suction cleaner comprises a main dirt separator 19 for removing dirt from the dirtladen air stream, a conduit 21 through which the air stream flows to this separator, a preliminary dirt receiving chamber 83 communicating with the said conduit and a preliminary dirt deflector 86 in the conduit 21 for deflecting into the dirt receiving chamber 83 some of the dirt passing through the conduit. The main separator is of the vortical whirl type and is located at the inlet of fans 33, 33 which discharge through a secondary separator comprising a filter bag 38 in chamber 37. The bag 38 is cleaned by a suction nozzle 60 rotated about the cleaner axis by the fan motor 64 and which discharges into the main separator 19. A dirt receiving chamber 80 in the separator 19 together with the chamber 83 are formed in an end cap 14 which is removable from the cleaner casing for emptying.
Patent GB-816893-A (GB)
Title: New or improved hydrodynamic-mechanical shaft coupling
IPC: F16H61/14
Filed: 1957-07-08
Abstract: 816,893. Friction clutches. DAIMLERBENZ A.G. July 8, 1957 [July 12, 1956], No. 21596/57. Addition to 806,184. Class 80 (2). [Also in Group XXIX] The combined hydrodynamic torque converter and friction clutch of the parent Specification, comprising a pump wheel 3 and an. axially slidable turbine wheel 4 carrying friction linings 14, 15 engaged with each other for mechanical transmission of power by springs 19 and held apart by the pressure of the oil between the wheels when the torque converter is working, is modified by locating an axially slidable coupling plate 17 in splines 18 in a surrounding driving cover 2, a friction lining 16 on the turbine engaging the coupling plate for mechanical transmission of power. When oil pressure acts between the pump and turbine 3, 4 to separate the friction linings 14, 15, it simultaneously acts upon the coupling plate 17 to move it leftwards away from the lining 16. Oil under pressure may be supplied to the space containing the springs 19 to assist the engagement of the friction linings for mechanical power transmission.
Patent GB-288560-A (GB)
Title: Improvements in pumps
IPC: F04B15/02
Filed: 1927-08-16
Abstract: 288,560. Crofton, W. B. April 12, 1927, [Convention date]. Lever - actuated pumps; mountings; singleacting bucket pumps; buckets.-A pump for wells &c. comprises a barrel 2 in which reciprocates a piston 4 provided with a downwardly-directed cup-leather 8 and an upwardly-opening valve 5 controlling the passage of liquid from the space below the piston to the delivery pipe 7, which is carried by the piston and is reciprocated by a lever 18. The barrel is open at the top, and is provided with a foot valve 3 through which liquid enters the barrel during the upstroke of the piston. Liquid may also pass the cup-leather 8 from the upper to the lower end of the barrel during the upstroke. The pipe 7 slides in blocks 12, 13 suspended from eye-bolts 16 by wires 14, 15 which are attached also to a frame 11 carrying the barrel 12.
Patent GB-621737-A (GB)
Title: Improvements in or relating to refractories
IPC: C04B35/48
Filed: 1945-08-23
Abstract: Zirconium silicate is prepared by heating a mixture of zirconia with finely divided silica to a temperature at which the oxides combine, the silica being obtained either by oxidation of an organic material containing a silicon compound capable of yielding silica on oxidation, e.g. by combustion of an organic compound mixed with the vapour of a silicon compound, or by oxidizing an organic silicon compound or hydrolysing a hydrolysable silicon compound. Alternatively, a heat-hardenable zirconium compound, e.g. a partially hydrolysed zirconium ester, may be heated with silica.  The product is used in the manufacture of refractories (see Group V). Specifications 575,734, [Group IV], and 621,742, [Group IV (a)], are referred to.ALSO:A refractory material comprising zirconium silicate is prepared by heating a mixture of zirconia with finely-divided silica to a temperature at which the oxides combine, the silica being obtained either by oxidation of an organic material containing a silicon compound capable of yielding silica on oxidation e.g. by combustion of an organic compound mixed with the vapour of a silicon compound, or by oxidising an organic silicon compound or hydrolysing a hydrolysable silicon compound.  The silica may be employed in the form of a dispersion or a solution of a compound, or in the form of a heat hardenable organic silicon compound, and the ingredients may be in stoichiometric proportions to produce zircon.  Where zirconia and a heat hardenable silicon compound are used as the ingredients they may be mixed with zircon as inert aggregate before heating. Alternatively, a heat-hardenable zirconium compound, e.g. a partially hydrolysed zirconium ester, may be heated with silica. Specifications 575,734, [Group IV], and 621,742, [Group IV (a)], are referred to.
Patent GB-676397-A (GB)
Title: Protective device for electrical apparatus operating in an insulating liquid
IPC: H01F27/40
Filed: 1950-09-04
Abstract: 676,397. Protective cut-out arrangements; fluid actuation of switches. MICAFIL, Ltd. Sept. 4. 1950. [Sept. 7, 1949] No. 21786/50. Class 38 (v). A protective device for an electrical apparatus immersed in an insulating liquid has one or more floats 3, 4, which upon the formation of gas, swivel to close contacts in indicating and tripping circuits, and is provided with a remotely-controlled valve to discharge any gas which may have collected in the device. In the Figure, the device has floats 3, 4 pivotally mounted on a fixed bracket 7 by means of levers 5, 6. The valve comprises a cylindrical bore 12 in which a valve piston 13 may be moved against the compression of a spring 19 by the armature 17 of an electromagnet 16. When the coil of the electromagnet 16 is energized, the piston 13 is moved downwardly out of the bore 12 so that any gas in the main chamber of the device may escape through the bore 12 into a chamber 14 and thence via a pipe 15 into an expansion vessel 10 of the apparatus. Capillary action in the annular space between the piston 13 and the bore 12 assisted by the head of cool liquid in pipe 15 provides an adequate seal to prevent leakage of gas when the valve is closed. For testing purposes a two-armed lever 20 is fixed to the valve piston 13 so that when the electromagnet is energized the floats are depressed to check their operation and that of the protective circuits. Instead of an electromagnet, an electric motor, pneumatic or hydraulic means, a chain transmission, linkage or gearing may be used to operate the valve from a remote point.
Patent GB-1199382-A (GB)
Title: Magnetic Film Memory.
Inventor: PATON ANDREW
IPC: G11C11/20
Filed: 1968-05-09
Abstract: 1,199,382. Magnetic storage apparatus. INTERNATIONAL BUSINESS MACHINES CORP. 9 May, 1968, No. 21951/68. Heading H3B. In an anisotropic thin film memory matrix read out of information is effected using oscillatory drive signals and stored information is detected from the phase of the read out signals. The n+1xN array 10 of anisotropic magnetic film elements includes n bit lines 12 and a phase line 13 of identical construction to the bit lines. In operation the magnetic elements associated with the bit lines are magnetized in one or the other direction along the easy axis, parallel to the word lines 11 whereas those elements crossed by the phase line 13 are all magnetized in the same direction parallel to the easy axis. During a read operation an oscillatory signal of frequency f in the range 10 to 100 MHz is applied to a selected word line 13 so that each magnetic element in the selected word line is subjected to an oscillatory magnetic field in the hard axis direction of amplitude insufficient to irreversibly change the state of magnetization of the element. The magnetization vector of the element oscillates about the easy axis direction inducing oscillatory signals of frequency 2f in each of the bit lines and the phase line. The phase of the signal developed on each line is characteristic of the information stored in the element coupled thereto and are 180 degrees out of phase with each other for binary zero and one. Differential amplifiers 17 each have one input connected to a respective one of the n bit lines and the other input connected to the phase line 13. Assuming that the elements coupled to the phase line 13 are magnetized in their binary zero direction then the output of each differential amplifier is negligible for a binary zero stored in the storage elements and large for a stored binary one. The output is fed via an integrator 18 to threshold switch 20. In the arrangement of Fig. 2 (not shown), thirtysix phase lines are shared between 288 bit lines and the outputs of the bit lines are gated by decoding trees into a group of thirty-six decoding circuits. The decoding circuits each connect a corresponding one of the associated bit lines to one input of the respective decoding circuit where the output is combined with the output from that one of the phase lines associated with the respective group of bit lines.
Patent GB-1108207-A (GB)
Title: Process for preparing 2-Ä2-(substituted) vinylÜcyclic amidines
IPC: C07D239/06
Filed: 1966-05-17
Abstract: The invention relates to a method of making a 2 - [2 - (substituted) vinyl] - cyclic amidine having the formula <FORM:1108207/C2/1> by condensing at a temperature between 50 DEG  and 150 DEG  C. a compound of the formula R1CHO wherein R1 is a 2-thienyl, 3-methyl-2-thienyl, 3 - thienyl, 2 - furyl, 3 - methyl - 2 - furyl, 3-furyl, phenyl or lower alkyl containing 1-4 carbon atoms substituted phenyl group with a compound of the formula <FORM:1108207/C2/2> in which R4 is hydrogen or methyl and Y is an ethylene or trimethylene group and if desired reacting the free base obtained with a suitable non-toxic acid to obtain the corresponding salt product.  The compounds may be recovered in the form of a citrate or hexafluorophosphate addition salt.  The reaction is preferably conducted in the presence of a reaction-inert solvent in the presence of a molecular sieve or basic catalyst and the reaction-inert solvent forming an azeotrope with the by-product water.
Patent GB-720126-A (GB)
Title: Function generator
IPC: G01S7/295
Filed: 1952-09-01
Abstract: 720,126. Electric analogue calculating apparatus. BENDIX AVIATION CORPORATION. Sept. 1, 1952 [Sept. 18, 1951], No. 21991/52. Class 37. [Also in Group XL (c)] An electric analogue generator of a hyperbolic or inverse function of the position of a movable element comprises an output impedance voltage divider energized by a highly degenerative voltage control circuit, having an intermediate tapping point adjustable by the movable element over a range of values changing the ratio of the divider impedances on opposite sides of the point, the voltage between the tapping point and a further tapping point on either side of the voltage divider being degeneratively applied to the control circuit input, and the desired function voltage appearing across the whole or a portion of the voltage divider and being applied to a utilization device. In Fig. 1 the movable element 12 of a variable width wave-guide antenna 11 is driven with oscillatory linear motion by a driving means 13 to scan the emitted beam hyperbolically in relation to the displacement of element 12. The linear motion correspondingly varies a resistance R1 in series with variable resistors R2, R3 in a chain energized from a D.C. source 15 through a current regulator tube 14 controlled by a high-gain amplifier tube 16 in known manner, whose control grid is energized by a voltage ei appearing between the slider of R1 and the negative end of the resistor chain. An output voltage eo appearing across the ends of the latter operates the deflection circuit 17 of a cathode ray tube 18, and it is shown that i.e. that the output voltage comprises a constant term and a hyperbolic function of the deviation of the movable element 12 in either direction from a fixed zero. The law may be adjusted to follow any desired hyperbolic function by variation of R2 and R3 with the addition of a D.C. zero level voltage, and the constant term may be eliminated by deriving an output voltage eh from the resistor R2. In a modification, Fig. 2 (not shown), resistor R1 is a poteritiometer having a fixed tap and a variable tap, the voltage eo is developed across the entire resistor chain, the voltage eh across R2 and the upper half of R1, and the voltage ei across R3 and the portion of R1 comprised by the variable tap, which is adjusted by the movable member. It is shown that the constant x varying between 0 and 1 accord. ing to the displacement of the movable member. In a further modification, Fig. 3, the resistor chain comprises two ganged equal variable resistors R2, a resistor R1 variable by a moving element, and a variable resistor R4, while the cathode of amplifier 16 is returned to a stabilized source of adjustable potential E. Voltage ei appears across resistors R1, R4 and the lower resistor R2, while voltage eo appears between the upper end of the resistor chain and earth in series with a stabilized adjustable zero level voltage Ec. Then it is shown that and the analogue function is adjustable to any desired hyperbola by varying the values of R1, R2, R4, E and Ec.
Patent GB-1205611-A (GB)
Title: Improvements in electrochemical machining
Inventor: DALTON TERENCE JOHN
IPC: B23H3/04
Filed: 1967-05-11
Abstract: 1,205,611. Electro-chemical machining tool. ASSOCIATED ENG. Ltd. May 10, 1968 [May 11, 1967], No. 22021/67. Heading C7B. An electro-chemical machining tool for performing a broaching operation to enlarge a hole in a metallic workpiece comprises a plurality of conducting members e.g. discs or washers 2 separated by isulating members, e.g. collars 3 of smaller cross-sectional area defining peripheral cavities 5, between successive conducting members the boundary of the tool being of tapered preferably frusto-conical form. The tip of the tool may be protected by an insulating domed cap 4. As shown, the metal discs or washers 2 are arranged upon and electrically connected to a stem 1 which is connected to the negative of a D. C. supply.
Patent GB-1488803-A (GB)
Title: Highly filled polyurea foams
IPC: C08G18/06
Filed: 1976-05-27
Abstract: 1488803 Polyurea foams BAYER AG 27 May 1976 [31 May 1975] 22045/76 Heading C3R Highly filled, hydrophobic polyurea foams having a unit weight of from 10 to 200 kg./m.<SP>3</SP> are prepared by mixing, in the presence of a polyether polysiloxane foam stabilizer and a tertiary amine catalyst, a water-insoluble polyisocyanate which is free from ionic groups, which is liquid'or is in the form of a solution or dispersion and has a viscosity of more than 200 oP/26 C. and a functionality of more than 2À1 with a from 30 to 80%, by weight, aqueous suspension of an inorganic filler, the suspension together with the catalyst having a pH of at least 8, at least 50%, by weight, of the suspended filler having a particle size of less than 50 microns and the weight ratio of suspension to polyisocyanate being from 1 : 2 to 6 : 1. Preferred polyisocyanates are those prepared by phosgenating an aniline/formaldehyde reaction product, followed, if desired by partly distilling off the binuclear products. Polyisocyanates containing carbodiimide, allophanate, isocyanurate, urea or biuret groups are also suitable. Suspensions used in the examples are prepared by suspending chalk, hydrate of lime, kaolin, barium sulphate, iron oxide yellow, titanium dioxide or magnesium aluminium silicate in water. The suspensions may be stabilized by the addition of dispersion stabilizers or thickeners. Blowing agents, tin catalysts and emulsifiers may also be included in the reaction mixture.
Patent GB-963459-A (GB)
Title: New sydnonimines and process for their manufacture
Filed: 1962-06-07
Abstract: The invention comprises 3-arylsydnonimines whose 3-aryl group is substituted by at least one substituent selected from hydroxy, C1- 6 alkoxy, C1- 6 alkyl, methylenedioxy, acyloxy, trifluoromethyl groups or halogen atoms or a C1- 6 alkylene group which links the 3-aryl group with the 4-position of the sydnonimine ring and whose 4-position may be substituted by and alkyl group, a halogen atom or a phenyl group which is unsubstituted or is by one or more substituents selected from hydroxy, C1- 6 alkoxy, methylenedioxy, acyloxy, C1- 6 alkyl or trifluoromethyl groups or halogen atoms, or an N-acyl or N-nitroso derivative thereof and their acid addition salts; the preparation thereof by treating a corresponding N-nitroso-arylamino-acetonitrile with an acidic agent and, if desired, acylating of nitrosating and/or halogenating the resulting product, and/or converting a resulting free base into a salt or a salt into a free base; and pharmaceutical compositions containing them.  Acyl radicals include those derived from aliphatic aromatic unsubstituted and substituted carbamic and thiocarbamic acids. Acid agents are organic, inorganic or Lewis acids. N-Nitroso-para-toluidino-acetonitrile is prepared by nitrosating para-toluidino-acetonitrile. Similarly are prepared N-nitroso-para-anisidino-, meta-anisidino-, -3, 4-dimethylanilino-, -2- methoxy -5- chloro-anilino- and -para-hydroxy anilino-aceto nitriles a -paratoluidino propio-nitrile, -a - para-toluidinobenzyl cyanide, -a - para-toluidino-para-chlorobenzyl cyanide, -a - para-toluidino-3, 4-dimethyox benzyl cyanide and -1, 2, 3, 4-tetrahydroquinaldic acid nitriles. 2-Methoxy-5-chloroanilinoacetonitrile is prepared from 2-amino -5- chloro-anisole, formaldehyde, sodium bisulphite and potassium cyanide. Similarly are prepared para-hydroxy-anilino-acetonitrile, a -paratoluidino propionitrile, a -paratoluidino benzyl cyanide, a -paratoluidino-parachloro benzyl cyanide, and a -para-toluidino-3, 4-dimethoxy-benzyl cyanide.  Pharmaceutical compositions comprise the compounds of the invention in admixture or in conjunction with an pharmaceutically acceptable carrier. The compositions may be in the form of tablets, capsules, dragees, ointments, creams, solutions, suspensions or emulsions and may contain other therapeutically active ingredients. The compounds show analgesic, antipyretic, antiphlogistic antiallergic properties and are useful as antirheumatics. They also show protracted hypotensive effects.
Patent GB-294961-A (GB)
Title: Improvements relating to vacuum cleaners
IPC: A47L5/36
Filed: 1927-12-01
Abstract: 294,961. Soc. Anon. pour l'Equipement Electrique des Vehicules. Jan. 6, 1927, [Convention date]. Divided on 283,173. Vacuum and pressure cleaning-apparatus.-A distributor communicates with the suction nozzle and with the suction and delivery side of the suction apparatus, and is capable of reversing- the direction of flow of air through the nozzle. The distributer, Fig. 2, comprises a partitioned cylindrical valve operated through a bellcrank 60 and Bowden wire to cause ports in the valve to register with the suction pipe 45 and with one of the atmospheric ports 48, 49. Fig. 9 shows a modification in which lift valves 80. 81 are provided on a lever actuated by a cable 57 within the suction pipe. Partial opening of the valves regulates the vacuum or blast. Blast may be used to raise dust which is then drawn off by suction.
Patent GB-1157970-A (GB)
Title: Improvements in or relating to Aerosol Dispensers
IPC: B65D83/14
Filed: 1967-05-15
Abstract: 1,157,970. Spray-producers. J. R. GEIGY S.A. 15 May, 1967 [16 May, 1966], No. 22327/67. Heading B2F. A spray producer device having a, nozzle 9 mounted in an actuator head 8 comprises a plastics outer receptacle 1 containing a solid or liquid material 2 to be dispensed, an inner receptadle 3 containing a liquified propellant gas, and a valve controlled by the actuator and including a high pressure obturation member 11 for the propellant and two low pressure obturation members respectively controlling the outlet of spray material and the admission of air into the receptacles, said device being designed so that the rate of escape by permeation of the propellant through the wall of the receptacle 1 is greater than the total rate of escape of the propellant from the inner receptacle 3 into the receptacle 1. Swelling or bursting of the receptacle 1 is thus obviated. The said total rate of escape is made up of .the rate of escape by permeation through the wall of receptacle 3, the rate of escape by permeation through the valve, and the rate of escape through the mechanism of the valve. For a propellant of a given type therefore, suitable materials are selected for the walls of both receptacles. The inner receptacle may be of metal or glass, which are both completely impermeable to the propellant gas, so that a wider range of plastics may be used for the receptacle 1. A flexible washer 12 acts in a known manner to form the two low pressure obturators. 1,158,061. Coating apparatus. MINNESOTA MINING & MFG. CO. 19 July, 1966 [20 July, 1965], No. 32462/66. Heading B2L. [Also in Division F2] Apparatus for coating the end portions of work pieces with fluid material, and particularly the ends of U-pipes 16 with adhesive for joining up adjacent straight tubes of a refrigerator system, comprises chambers 166 in a dispensing block 140 adapted to receive the ends of the pipes 16 about centering posts 170 when a yoke member 112 holding the pipes 16 by a spring clip 114 is lowered by an air-operated piston. On each operation an air operated ejector unit 172 (Fig. 7, not shown) supplies a measured quantity of adhesive to passages 143 of block 140 which passes to annular spaces 160 and through ports 168 onto the outer surface of the pipes 16 which are then withdrawn.
Patent GB-1378326-A (GB)
Title: Electrical switches
IPC: H01H5/02
Filed: 1973-04-16
Abstract: 1378326 Magnetic switches KIMBERALLEN Ltd 16 April 1973 [12 May 1972] 22332/72 Heading H1N An electric switch in which magnetic contact operation is effected by movement of a permanent magnet has a second permanent magnet fixed in such a position as to bias the movable permanent magnet to its two end positions. In the switch shown there are two movable magnets 11a, 11b which are mounted on the plunger shaft 2 attached to an armature core movable within a solenoid winding 1. End of travel positions are defined by resilient stops 12, 13 and permanent magnets 14, 15 are mounted on side plates 3 to provide the snap-action bearing. In one end position the magnets 11a, 11b act on reed contact units 5b and 5c and in the other end position magnet 11b acts on a reed contact unit 5a.
Patent GB-1028399-A (GB)
Title: Polymerisation of isobutene
IPC: C08F10/00
Filed: 1964-05-29
Abstract: Polyisobutene is made by polymerizing isobutene in a hydrocarbon solution in the presence as catalyst of aluminium ethyl dichloride, and under adiabatic conditions and with laminar flow of the reactants in the reactor.  The solutions of monomer and catalyst may be cooled and mixed immediately before introduction into the reactor.  The catalyst may be mixed with AlCl3.  The isobutene used is generally obtained from the C4 fraction of an olefinic cracking gas by extraction with H2SO4, followed by rectification and contains minor amounts of other C2, C3 and C4 hydrocarbons. Polymers of molecular weight around 2,000,000 are obtained by effecting the polymerization at low temperatures, e.g. about -100 DEG  C.  The Specification includes a flow diagram of a continuous method of carrying out the process.