baber/WOPTO huggingface dataset:
Patent GB-792187-A (GB)
Title: Curable glycidyl polyether-polyamine compositions
IPC: C08G59/64
Filed: 1956-04-20
Abstract: <FORM:0792187/IV (b)/1> wherein x is a whole number from 0-3, n is a whole number from 2 to 6 and R is a hydrogen atom or a hydroxyalkyl group, at least one R being a hydroxyalkyl group and the total number of hydroxy alkyl groups being less than x+2 are prepared by reacting a polyalkylene amine with ethylene or propylene oxide, the proportions of starting material being adjusted so that the resulting hydroxyalkyl alkylene amine contains at least 3 reactive amino hydrogen atoms per mol.  The reaction can be conducted under pressure and in the presence of solvents or an aliphatic monohydric alcohol and preferably at a temperature of from 0-35 DEG  C.  In examples, dipropylene triamine and an equal weight of water were maintained at 25 DEG  C. while ethylene oxide was passed therethrough.  A product was obtained containing mostly N : N1-dihydroxyethyl dipropylene triamine with some N-hydroxy ethyl dipropylene triamine; (2) diethylene triamine in water was similarly treated with propylene oxide N-hydroxypropyl diethylene triamine together with isomeric bis-hydroxypropyl diethylene triamine was obtained; (3) diethylene triamine similarly reacted with ethylene oxide yielded N-hydroxyethyl diethylene triamine.ALSO:Polyepoxy compounds having an average of more than one epoxy group per mol. are hardened by hydroxy-alkyl alkylene polyamines having the formula: <FORM:0792187/IV (a)/1> wherein x is 0-3, n is 2-6 and R is H or an hydroxyalkyl group at least one R being an hydroxyalkyl group, and the total number of hydroxyalkyl groups is less than x + 2.  Examples of hydroxyalkyl polyamines specified are N-hydroxyethyl ethylene diamine, N-hydroxyethyl pentamethylene diamine, N-hydroxypropyl tetramethylene diamine, N-hydroxyethyl diethylene triamine, N,N-dihydroxyethyl diethylene triamine, N,N11-dihydroxyethyl diethylene triamine, N-hydroxyethyl propylene diamine, N,N1-dihydroxyethyl dipropylene triamine, tris-hydroxyethyl triethylene triamine.  The hydroxyalkyl polyamines may be prepared by heating a polyalkylene amine with ethylene or propylene oxide.  The preparation of N,N1-dihydroxyethyl dipropylene triamine and a mixture of N-hydroxy and bis-hydroxy-propyl diethylene triamine is described. Polyepoxy compounds which can be hardened by addition of the foregoing are glycidyl ethers of dihydric phenols and bis phenols; resins obtained by epoxidizing dihydroxy diphenyl alkanes or phenol-aldehyde novolacs; glycidyl ethers of polyhydric alcohol. Tables are given of the hardening weights, gel times, peak temperatures of mixtures of polyepoxides and many of the above polyamines in comparison with diethylene triamine.
Patent GB-285799-A (GB)
Title: Improvements relating to thermionic valves or electron discharge tubes
IPC: H01J19/78
Filed: 1927-05-06
Abstract: 285,799. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Feb. 21, 1927, [Convention date]. Vacuum tubes.-The inter-electrode capacity of discharge tubes or valves with at least three electrodes is neutralized by a condenser of capacity substantially equal to that existing between the grid and anode, the condenser being separate from the electrodes and mounted within the valve with one plate electrically connected to the grid. The condenser 4, Fig. 2, may comprise internal and external metal coatings on a glass tube and may be mounted within the cap 2 of the valve carrying the usual pins 3, a lead 5 from a terminal 6 at the side of the cap being soldered to the inner coating of tin-foil and the outer coating being in contact with the grid lead. The condenser may be mounted in the foot of the valve. In a modification, the condenser comprises a metal tube spaced from the grid lead which forms one plate of the condenser. In a valve between leads 17, Fig. 5, to a tuned aerial and output leads 18 to another valve, the terminal 6 is connected to a coil 14 coupled to an anode coil 15 tuned by a condenser 16. If the capacity of the condenser 4 is equal to the capacity between the grid 11 and anode 12, the ratio of the coupling between the coils 14, 15 is one to one to neutralize self-oscillation and other effects due to the grid-anode capacity; if the capacities are not exactly equal, the coupling between the coils 14, 15 is adjusted. Specification 288,663 is referred to.
Patent GB-1422333-A (GB)
IPC: H01B5/10
Filed: 1972-03-16
Abstract: 1422333 Electrical conductors DELTA METAL ELECTRONICS Ltd 13 March 1973 [16 March 1972] 12284/72 Heading H1A [Also in Division H2] A conductor comprises six bunches K of strands wound helically with a hollow passage L for cooling water, alternate bunches K being twisted in opposite directions. The conductor may be compressed in a die to render the bunches sector-shaped (Fig. 1, not shown). Twelve further bunches M may be laid outside the first six, alternate bunches M likewise being twisted in opposite directions. Preferably the lay of the outer twelve M is opposite from that of the inner six K. The number of wear points W, where bunches with the same twist touch, is zero without the twelve further bunches and six if they are provided. Reduction of this number is given as the main object of the invention. A cable rope (Fig. 3, not shown) comprises eighteen conductors as above, the arrangement of conductors in the rope being the same as that of the bunches in each conductor. A cable (Fig. 4, not shown) comprises six such cable ropes, laid around a fluted core (5) and inside an insulating sheath (3). Alternate ropes carry current in opposite directions and are separated by insulation (4). A jumper lead (Fig. 5, not shown) for carrying current in one direction only, comprises six ropes or conductors as above, laid around a metal spiral (11) which serves as a cooling water duct. Another jumper lead (Fig. 6, not shown) comprises six ropes as above laid around a seventh rope. At the ends, the seven ropes are compressed in a die into rectangular blocks (14).
Patent GB-289445-A (GB)
Title: Improvements in covers for protecting clothes from dust and the like
IPC: A47G25/54
Filed: 1928-04-27
Abstract: 289,445. Didier, E. April 27, 1927, [Convention date]. Coverings for protecting wearing-apparel from dust.- In a paper bag for preserving garments, the bag being open along one side and having its upper end provided with a clothes hanger suspended from an esternal hook c by a ring or chain a, the upper ends p of the bag are turned over and secured and one side of the bag is closed by turning over the edge and securing it either by tying string &c. f around eyelets o or studs provided along the edges of the side. The edge may be strength. ened by a cardboard strip and the ring or chain a may be secured to a strengthening flap disposed in the top of the bag. The Specification as open to inspection under Sect. 91 (3) (a) comprises also securing the edges by bending over malleable metal tongues provided thereon. This subject-matter does not appear in the Specification as accepted.
Patent GB-986850-A (GB)
Title: Improvements in or relating to electric circuits for terminating signal transmissionpaths
Inventor: MORRIS RICHARD MICHAEL
IPC: H03H11/28
Filed: 1962-03-30
Abstract: 986,850. Transistor switching circuits. GENERAL ELECTRIC CO. Ltd. April 1, 1963 [March 30, 1962], No. 12352/62. Heading H3T. In a transistor switching circuit the input impedance of a transistor connected in commonemitter configuration terminating a transmission or delay line is maintained constant by a Zener diode and a rectifier connected in series combination between the collector and base electrodes of the transistor. As shown in Fig. 1, transistor 9 is maintained conducting in the absence of uni-directional current pulses on coaxial cable 1 by the forward bias on its base 8 due to Zener diode 16, operating in its reverse biased low resistance region, connected in series with rectifier 17 between the collector and base electrodes of transistor. The value of the base current is such that the transistor is operating in the linear portion of its input characterized so that the correct impedance is connected across the coaxial cable and which is maintained constant by the negative feed-back over Zener diode 16 and rectifier 17. A current pulse on input terminal 2 causes the transistor to bottom and a current to pass from terminal 6 to a load. Rectifier 17 is now reverse biased and prevents current flowing therethrough. Rectifier 18 protects the transistor against reverse voltages applied across its base-emitter electrodes. In order that current may be supplied to the load between pulses applied to the base circuit the circuit of Fig. 2 is employed in which input line 19 is connected to terminal 6 and load is connected between output line 20 and earth.
Patent GB-567222-A (GB)
Title: Improvements in or relating to time controlled switching arrangements
IPC: H01C7/04
Filed: 1943-07-30
Abstract: 567,222. Electromagnetic switches. STANDARD TELEPHONES & CABLES, Ltd., and SHEPARD, S. C. July 30, 1943, No. '12394. [Class 38 (v)] An electromagnetic relay is associated with an indirectly - heated thermistor, the heating current of which is adjustable, thereby providing an adjustable time lag. In the arrangement of Fig. 1, the supply is connected to the points X, Y and the heater r1 of an indirectly-heated thermistor T1 is heated by current derived from an adjustable part of a resistance R6. The thermistor has a negative temperature coefficient so that after a time lag its resistance R1 becomes sufficiently reduced for the relay A to operate. In a modification, Fig. 2 (not shown), giving a greater time lag, the heater r1 is in series with the resistance of a second thermistor, the heater of which is adjustably heated. This second thermistor must heat up before the full heating current can flow to the first thermistor. Additional thermistors may be added in a similar way. Specifications 487,563 and 557,707 are referred to.
Patent GB-1390743-A (GB)
Title: Epoxidized terpolymer or derivatives thereof and oil and fuel compoitions containing same
IPC: C08G59/34
Filed: 1973-03-15
Abstract: 1390743 Lubricants; fuels EXXON RESEARCH & ENG CO 15 March 1973 [16 March 1972] 12417/73 Headings C5F and C5G [Also in Division C3] Lubricating and fuel oil compositions comprise as sludge dispersants, viscosity index improvers and acidity neutralizers epoxidized terpolymers of 30 to 85 mole per cent ethylene, 14À5 to 69À5 mole per cent of a C 3-8  α-olefin and 0À5 to 20 mole per cent of a C 5-14  non-conjugated diene and functional adducts thereof, e.g. with water, alcohols, phenols, acids, amides, amines, mercaptans and alkyl imidazolines. The oils may be mineral or synthetic, e.g. dibasic acid esters, carbonate esters, phosphate esters, halogenated hydrocarbons, polysilicones, polyglycols, and glycol esters, e.g. C 13  oxo acid diesters of tetraethylene glycol; or gasoline or diesel or No. 2 fuel oils. The compositions may also comprise dyes, pour point depressants, antiwear agents such as tricresyl phosphate, zinc dialkyl dithiophosphates, antioxidants such as phenyl-α-naphthylamine, t-octylphenol sulphide and 4,41-methylene bis-(2,6-di-t-butylphenol), viscosity index improvers such as olefin copolymers, polymethacrylates, polyisobutylene and alkyl fumarate/vinyl acetate copolymers, and conventional dispersants and detergents. Examples describe compositions of neutral paraffinic mineral lubricating oils containing epoxidized ethylene/propylene/5-ethylidene-2-norbornene terpolymers as sludge dispersants, and reaction products of the epoxidized polymers with N,N-dimethyl-1,3-propane-diamine as viscosity index improvers.
Patent GB-1185817-A (GB)
Title: Method of Separating Neptunium and Uranium Values
IPC: C01G56/00
Filed: 1969-03-10
Abstract: 1,185,817. Separation of neptunium. UNITED STATES ATOMIC ENERGY COMMISSION. 10 March, 1969 [14 May, 1968], No. 12507/69. Heading G6R. Neptunium and uranium values are separated from one another by sorption of a mixture of NpF 6  and UF 6  on to sodium fluoride at 100- 250 C., selectively reducing the NpF 6 , and removing UF 6  and the Np values separately. The NpF 6  is reduced by cooling the NaF to 20-30 C. and removing fluorine by passage of an inert gas, a stable neptunium fluoride- NaF complex being formed; UF 6  is then desorbed by passing an inert gas through the bed at 225-400 C.; the temperature is then increased to above 400 C. and fluorine is passed through the bed to form and remove NpF 6  which may be collected in a cold trap or in a NaF trap. The desorbed NaF bed may be re-used immediately.
Patent GB-1308954-A (GB)
Title: Air volume control devices
IPC: F24F11/75
Filed: 1970-03-16
Abstract: 1308954 Valves NORDISK VENTILATOR CO AS 16 March 1970 [11 April 1969] 12593/70 Heading F2V [Also in Division F4] An air volume control device for maintaining constant an air flow volume per unit of time independently of the difference in air pressure between an inlet 2 and outlet 3 of the device comprises a pivoted flap 4 and a cam 8 fixed to the pivot pin 5 of the flap and connected to a spring 11 by a cord 10, whereby the torques exerted on the pin 5 by the air pressure and spring 11 are equal and opposite in any adjusted position of the flap 4. Two springs 11 and cams 8 may be provided, one pair at each end of the flap. A screw 13 is threaded into the spring 11, and a nut 14 held against a frame 12 permits adjustment of the effective length of the spring. The or each frame 12 may be adjustable to render the corresponding spring active or inactive, and may be moved to an active position by an electromagnet.
Patent GB-592027-A (GB)
Title: Improvement in liquid fuel burner
IPC: F23D5/00
Filed: 1945-05-18
Abstract: 592,027. Liquid-fuel burners. CLARKSON, A. May 18, 1945, No. 12596. Convention date, March 6, 1944. [Class 75 (i)] In a liquid-fuel burner, liquid fuel is vaporized in a retort 25 and mixed with primary air, the gaseous mixture being passed into a chamber 26 and delivered downwardly through ports 29 to flow across the path of secondary air in a combustion chamber. The liquid fuel and primary air may be supplied through a duct 37 having a retarding surface 39a, such as a screen with pockets tending to retain drops of fuel, an absorbent surface of rock wool cemented in position, or a roughened surface of granular material, a baffle 41 being placed opposite the end of the duct 37 to deflect air from a central hole 34. The secondary air is supplied between a baffle ring 18 and a deflector 31, some air also being supplied between the ring 18 and the bottom wall 15 on which the ring is supported by lugs so that the flames are kept away from the bottom and side walls of the combustion chamber. The deflector 31 which prevents the air from cooling the burner is held between the burner member and a spacing sleeve 32 by a bolt 33, an adjustable sleeve 32a being provided to raise and lower the burner so as to vary the size of the air supply passage. To preheat the burner, liquid fuel is supplied through the duct 37 and drips through a small hole 37a and the port 29 into a channel portion 17 of the combustion chamber where it is ignited by a torch inserted through a duct 43. When the burner structure is sufficiently heated, the liquid fuel vaporizes in the retort 25 and mixes with the primary air, both the primary air and secondary air being either drawn into the heater by the stack or thermal draughts or being forced in by a blower. Specification 590,668, as open to inspection under Sect. 91, is referred to.
Patent GB-1075414-A (GB)
Title: Improvements in or relating to methods of manufacturing semiconductor devices
IPC: H01L23/495
Filed: 1965-03-25
Abstract: 1,075,414. Semi-conductor devices. SIEMENS A.G. March 25, 1965 [March 26, 1964 (2)], No. 12606/65. Heading H1K.  Individual semi-conductor bodies 1 are mounted at intervals along an elongated carrier member of conductive material (as shown, a gold-coated strip 2 of a nickel-cobalt-iron alloy) which acts as a transporting strip for subsequent operations, conductive junctions 23, 24 are established (e.g. by thermocompression) between electrodes on each of the semi-conductor bodies 1 and associated terminal electrodes carried by the carrier member (as shown, wires 5, 6 spot-welded at points 7 to the strip 2), each semi-conductor body and at least the conductive junction portion (23, 24) of each terminal electrode are encapsulated in a body 8 of potting compound, and the carrier member and terminal electrodes are severed (as shown, along dotted lines 9, 10) to form a plurality of discrete encapsulated semi-conductor devices, each provided with projecting terminal electrodes: In alternative embodiments, the carrier member and terminal electrodes take the form of a plurality of parallel wires joined by bridge pieces at intervals (Figs. 5 to 7, not shown), or of patterns stamped on a metal strip (Figs. 8 to 19, not shown) which may provide terminal electrodes for several components of a circuit.
Patent GB-1176847-A (GB)
Title: Improvements in Mower Units.
Inventor: HEMINGWAY JAMES KENNETH
IPC: A01D34/47
Filed: 1967-03-17
Abstract: 1,176,847. Gang mowers. H. PATTISSON & CO. Ltd. 12 March, 1968 [17 March, 1967], No. 12624/67. Heading A1F. A gang mower uses hydraulic motors supplied with pressure fluid from a pump on the vehicle towing the mower to rotate the cutting cylinders, thus eliminating the drag on ground wheels resulting if the cylinders are rotated by the ground wheels. Five gang mower units 10 pivotally mounted on a trailer 11 each have a hydraulic motor 14 driving the cutting cylinder 32 by a chain and sprocket 31. Each motor 14 is supplied with pressure fluid through flow and return pipes 16 and 17 with flexible portions 16a and 17a which allow the mower units to be raised and lowered on their pivots (39, 37), Fig. 3, (not shown) for transportation and cutting. The flow and return are connected to a pressure manifold 18 and an exhaust manifold 19 respectively, the flow pipes being connected through control valves 30 for each unit which divide the flow between the unit and exhaust manifold. The valves 30 are adjustable to balance the supply to all units. The exhaust manifold is connected to a reservoir tank 23 through a filter 22. The rate of rotation of the mowing cylinder can be adjusted, to suit mowing conditions, by altering the setting of all control valves 30, or by adjusting a relief valve 26 governing the pressure in the inlet manifold 18 so that excess pressure fluid is by-passed through filter 22 to the tank 23, or, preferably, by altering the output of the pump itself.
Patent GB-611283-A (GB)
Title: Clothes line manipulator
IPC: D06F53/02
Filed: 1946-04-26
Abstract: 611,283. Clothes-lines. WADDELL, W.D. April 26, 1946, No. 12648. Convention date, May 15, 1945. [Class 52(v)] A separating device for the strands of a twisted wire clothes-line 1 employs rollers or sheaves 17 rotatably mounted in side by side or superposed relation on transverse axes in a holder 8 in which the whole roller assembly can also rotate about the longitudinal axis of the holder. The device can be manually slid along the wire or can be mounted on a bracket 10 on one of the line sheaves 2, 3.
Patent GB-1142182-A (GB)
Title: Novel aryl ethers
Inventor: SCHNELL HERMANN
IPC: C07C69/76
Filed: 1967-03-17
Abstract: 1,142,182. Aryl ether-sulphones. FARBENFABRIKEN BAYER A.G. 17 March, 1967 [18 March, 1966; 27 April, 1966], No. 12693/67. Heading C2C. The invention comprises aryl ether-sulphones of the formula in which R is an optionally substituted mono- or poly-nuclear aromatic radical. They are prepared by reacting 1 mole of a dihalo-diphenyl sulphone with approximately 2 moles of a di-alkali metal phenolate of a dihydric phenol in the presence of a strongly polar organic solvent at 100-160‹ C., and acidifying the product. Suitable polar organic solvents are, for example, diethyl sulphoxide, dimethyl 1 sulphone, diethyl sulphone, diisopropyl sulphone and tetramethyl sulphone. Preferably the phenolate is formed from the phenol and alkali metal hydroxide simultaneously with the production of the ether.
Patent GB-1186344-A (GB)
Title: Improvements in or relating to Electric Blankets
Inventor: FLETCHER JACK
IPC: H05B3/34
Filed: 1966-03-23
Abstract: 1,186,344. Electric blankets. J. FLETCHER. 3 April, 1967 [23 March, 1966], No. 12724/66. Heading H5H. An electric blanket is produced by laying a resistance heating element 16 on one surface of a non-woven fibrous material 10, laying a second non-woven fibrous layer 10 over the element, and pressing the two layers together after applying adhesive to the areas not covered by the element 16. Heat may be applied to cure the adhesive and the layer 10 is initially positioned on pins 14 on a jig 12. The non-woven fibrous material is produced by needling a web of fibres. A woven scrim may cover the non- woven material. One or both the layers may have one layer of reinforcing threads laid in a particular direction or two layers of reinforcing threads laid in directions at right angles to each other. The fibres of the layer 10 are preferably laid at right angles to the fibres of the layer 20.
Patent GB-1310164-A (GB)
Title: Adjustable bed
Inventor: KORBER H
IPC: A61G7/00
Filed: 1970-03-17
Abstract: 1310164 Adjustable beds; on-off castors; furniture feet H KORBER 17 March 1970 [19 March 1969] 27 Jan 1970] 12784/70 Headings A4H A4J and A4U In a hospital bed having pivotally inter-connected back, seat, thigh and leg supports 1-4 respectively, a two arm lever 11 which is pivotable about a shaft 10 mounted on the bed frame 5 through brackets 8 has one arm pivotally connected through a rod 13 to the back support 1 and the other arm pivotally connected to a link 14 fixed to the seat support 2 and the supports are connected to the bed frame through a system of levers such that they can be moved from a coplanar position by raising or lowering the seat support which remains at a constant angle to the frame during movement while the other supports are inclined relative to the seat support. Raising or lowering of the seat support may be effected by an electric motor (73) Fig. 4, (not shown) connected to a threaded rod (54) passing through a split nut (56) and being indirectly connected through an intermediate frame 7 to the seat support 2, the intermediate frame being adjustable with respect to the bed frame 5. Alternatively, the seat may be raised or lowered by the weight of the body of the user; the two parts of the split nut (54) being moved away from each other by pulling on a cable 32", the rod then being free to move when pressure is applied to the seat support by the user and being locked in position when the cable is released thereby causing the two parts of the split nut to firmly clamp the rod. The bed may be modified for ordinary household use Figs.8-12 (not shown). The bed is provided with feet 45 which are retracted when it is desired to move the bed. Each foot comprises an elastic sole 47 which when loaded by a spring 51 grips the floor and prevents any unwanted movement of the bed. Loading of the spring 51 is effected by downward movement of a pedal 42 connected to two pivotally inter-connected rods 43 pivotally connected to the bed frame and to the foot via a pin 44.