baber/WOPTO huggingface dataset:
Patent GB-311902-A (GB)
Title: Improvements in and relating to brakes
IPC: F16D51/04
Filed: 1928-04-11
Abstract: 311,902. Rubury, J. M. April 11, 1928. Addition to 243,053. Band or coil; blocks and shoes acting on drums. -A brake of the kind described in the parent Specification comprises a pair of shoes connected by a flexible strip which is anchored by a link or a flexible member to a fixed point, the free end of one of the shoes being engaged by an operating cam, while, the free end of the other shoe coacts with a fixed abutment. As shown in Fig. 2, a. strip e of flexible steel or other material is stiffened at the end parts by members a', b' to form shoes. The member b<1> is mounted on a fixed pivot d and the free end of the member a' is engaged by a cam, as shown. A link f is connected to the strip e and to a fixed pivot g. A spring m normally holds the link against an adjustable eccentric stop j. In Fig. 3, a flexible member q is secured to a fixed support r and to a flexible strip e attached to the shoes a, b. In a further construction, the shoes are connected by a short strip e, the link f is connected to the end of the shoe a adjacent the strip and a spring extends from the fixed pivot of the link to the shoe b.
Patent GB-611206-A (GB)
Title: Improvements in and relating to protective devices for electric circuits
IPC: H02H9/06
Filed: 1944-06-06
Abstract: 611,206. Protective arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., FORSTER, E. W., and WHITELEY, A. L. June 6, 1944, No. 10842. [Class 38 (iv)] An arrangement for limiting surges in low voltage networks for A.C. or D.C. comprises a low-pressure gas discharge device into which the surge energy is diverted and means to cause its de-ionization soon after initiation of discharge. As shown, a high voltage discharge device 2 is coupled across the low voltage network, which may comprise a small high reactance alternator giving rise to a surge when a load 11 is removed, by a step-up transformer 1. and a relay 7 is adapted to open a contact 7a after a short time delay. For this purpose a slow release relay 6 is connected across a non-linear resistance in the form of a lamp 4 in series with the transformer 1. The relay 7 is energized to close the contact 7a, when the network is energized, by a slow release relay 10 which closes a contact 10b and maintains itself through contact 10a. When a surge breaks down the discharge device 2, the transformer 1 becomes short-circuited and the surge voltage is applied to the lamp 4, whereupon relay 6 operates to open a contact 6b and after a time interval relay 7 releases to de-ionize the device 2 by the opening of contact 7a. Other contacts on relays 6 and 7 control the heater winding 8 of a thermal relay, the contacts 8a of which close after 1 or 2 seconds to energize relay 10 and reset the arrangement. The non- linear resistance 4 heats rapidly and cuts down the current in the circuit. To avoid spurious tripping of the discharge gap, a damping resistance can be connected across it; as shown, a non-linear resistance such as a tungtsen filament lamp 3 is used. The lamp 4 may be connected across a current transformer instead of in the direct circuit. In a modification, a simple arrangement comprising transformer 1, discharge device 2, series resistance or lamp 4 and a condenser is used across a D.C. circuit supplying an inductive load; the condenser performs the de-ionizing function.
Patent GB-948701-A (GB)
Title: Stable aqueous emulsions of ethylene copolymers
IPC: C08F2/18
Filed: 1962-03-21
Abstract: Stable aqueous emulsions of ethylene copolymers are made by polymerizing ethylene at pressures of over 100 atmospheres, in aqueous medium, in the absence of conventional emulsifiers, with the aid of water soluble free-radical catalysts, and in the presence a a comonomer of 0.1 to 10% by weight of at least one strongly basic amine containing a polymerizable carbon to carbon double bond, or a salt or quaternary product of the amine. Additional ethylenically unsaturated monomers may also be present in the aqueous medium.  The free-radical catalyst is generally a Redox system. The amine may be allylmethyl amine, allyl dimethylamine, 4-vinyl-benzyl dimethyl amine, 4-allyl-benzyl dimethylamine, methyl-benzyl allylamine, N-vinyl-piperidine, N-vinyl-morpholine, N-allylpiperidine, N-allyl-N1-methylpiperazine, or compounds of the general formula: <FORM:0948701/C3/1> where R is a hydrogen atom or an alkyl radical containing from 1 to 3 carbon atoms, R1 and R11 may be the same or different, aliphatic, alicyclic, or heterocyclic radical and which with the nitrogen to which they are attached may form a heterocyclic ring, X is -R-, -O-, or -S-, and Y is a divalent alkyl or cycloalkyl radical which contains not more than 8 carbon atoms, or a reaction product of methacrylic acid ethyl ester betaisocyanate and dimethylamino-propylamine, or an allyl ester of glutamic acid or methacrylic ornithine.  The free radical catalyst may be potassium, sodium, or ammonium-peroxy disulphates, perborates, or hydrogen peroxide in admixture with sodium pyrosulphite, sodium bisulphite, sodium formaldehyde-sulphoxylate, or triethanolamine. The polymerization is generally effected in a pH in the range of 5 to 9. Exemplified copolymers are ethylene and allylamine, ethylene and the sulphuric acid salt of dimethylamino-propyl-methacrylamide, ethylene and methacrylamidopropyl-dimethyl-carboxymethyl-ammonium betaine, ethylene and methacryl-oxethyl-beta-trimethyl ammonium chloride, ethylene and a compound of the formula: <FORM:0948701/C3/2> and a terpolymer of ethylene vinyl acetate, and methacrylamido propyl dimethyl-ammonium betaine. The emulsions may be used for coating substrates such as paper, leather, or textiles.  The copolymers may be crosslinked by heat.ALSO:Cotton fabric is treated by the Foulard process with an aqueous emulsion of a copolymer of ethylene and 0.1 to 10% by weight of at least one strongly basic amine containing a polymerizable carbon to carbon double bond, or a salt or quaternary product of the amine (see Division C3), and the fabric dried at 95 DEG C.  The feel of the fabric and its wear resistance is stated to be increased.  The copolymers are cross-linked by heat-treatment, and they may also contain other ethylenically unsaturated monomers.
Patent GB-752678-A (GB)
Title: Mono-stable multivibrators
IPC: H03K3/10
Filed: 1954-04-13
Abstract: 752,678. Pulse generating circuits. RADIO CORPORATION OF AMERICA. April 13, 1954 [April 29, 1953], No. 10881/54. Class 40 (6). A flip-flop circuit comprises two intercoupled electron tubes which have a large value capacitor connected between the cathodes and a degenerative resistor connected between the cathode of the normally non-conductive tube and a point of fixed potential. By this means the amplitude and duration of the output pulse generated are stabilized against changes caused by variations in tube characteristics and power supply voltage. Fig. 1 shows a flip-flop circuit in which tube V1 is non-conductive and tube V2 conductive in the stable state and in which the circuit is triggered to its unstable state by positive pulses applied to the grid of tube V1 at terminal 12. A large value capacitor 25 is connected between the cathodes of tubes V1 and V2 and a large resistor 16 is included in the cathode circuit of tube V1 the time constant of network 25, 16 being at least 20 times the maximum period between applied trigger pulses. The resistor 16 is much larger than cathode resistor 24 and is considerably in excess of that required for self-biasing of tube V1. The grid of tube V2 is normally biased to the conductive state by resistor 21. The duration of the positive output pulses generated at the anode of tube V2 is primarily determined by the time constant of resistorcapacitor network 19, 21. In a modification shown in Fig. 4 the grid of tube V1<SP>1</SP> and the timing resistor 21<SP>1</SP> are both connected to the junction point 32 of resistors 13<SP>1</SP>, 21<SP>1</SP> the potential of which is maintained constant during the cycle of operation by by-pass capacitor 33.
Patent GB-104822-A (GB)
Title: Apparatus for and Process of Making Gas from Liquid Hydrocarbons.
Inventor: DAYTON WALTER CLINT
IPC: C10G9/00
Filed: 1916-02-18
Abstract: 104,822. Dayton, W. C. Feb. 18, 1916. Oil gas. - In apparatus for making a fixed gas from liquid hydrocarbon and air or other combustion - supporting gas, of the type in which the mixture is heated in a gasifier comprising a casing divided by baffles into radially-disposed and connected passages, the gas-outlet pipe 6 is arranged around the mixture-inlet pipe 20 so as to preheat the mixture, and the pipe 20 is fitted into the passage 5 by a shallow taper thread. The gasifier 4 is of the shape shown in Fig. 4 in cross-section. The means for heating the gasifier or gasifiers, for mixing the hydrocarbon and air, and for controlling the feed in accordance with the consumption, are those described in Specification 104,023.
Patent GB-205310-A (GB)
Title: Improvements in or relating to the destruction of weeds or the like
IPC: A01B33/02
Filed: 1922-04-18
Abstract: 205,310. Tallgren, H. April 18, 1922. Rotary-tool machines; weeds, destroying. - A rotary machine for destroying weeds without disturbing the soil comprises resilient wires or loosely-jointed members arranged to beat the weeds and the surface of the soil and then slide thereon. The beaters may be arranged in groups so as to thin out plants into rows. The wires 12 are mounted in a drum or roller driven by chain and spur gearing from the axle 3 of two travelling wheels 4. Discs 13 prevent lateral bending of the wires. The drum or roller is mounted on a pivoted frame 2 adjustably connected to the frame 1 carrying the draught shafts by rods 18 provided with slots 16, 17 to engage pins 15. A steadying- wheel may be provided. The drum may comprise transverse bars on which are threaded links to which T-shaped beating-members are loosely connected. The machine may be drawn by manual or horse power. The beater drum may be driven by a motor which may als6 drive the travelling wheels. Reference has been directed by the Comptroller to Specification 17570/07.
Patent GB-683605-A (GB)
Title: Improvements relating to television apparatus employing non-linear circuits
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: H04N5/202
Filed: 1948-04-21
Abstract: 683,605. Electric analogue computing systems. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 26, 1949 [April 21, 1948], No. 10953/48. Class 37. [Also in Group XL (c)] A non-linear circuit for modifying the contrast of television signals comprises a valve to the grid of which the signals are fed and having a cathode feed-back impedance across which is connected a series combination of a linear impedance and a non-linear impedance the modified signals being derived from an intermediate point on the series combination. The output of a cathode follower circuit 1, 8 in the head amplifier of a television camera is applied to the following valve 9 through a first potentiometer comprising resistor 10 and diode 16 and a second potentiometer comprising resistor 11 and diode 17. The anodes of the diodes are biased from a source 7 to be normally non-conductive the anode of diode 17 having a greater bias than that of diode 16. As the instanteous value of the input potential increases diode 16 first becomes conductive and then diode 17 so that the attenuation progressively increases. By a suitable choice of components an approximately exponential characteristic may be obtained. Inductors 12 and 13 and capacitor 25 compensate for any loss in high frequency response. In an alternative arrangement (Fig. 3, not shown), the diodes in parallel with resistors are arranged in series in the connection between the cathode of valve 1 and the grid 9 and become success. ively non-conductive as the input potential increases. Specification 536,089 is referred to.
Patent GB-891566-A (GB)
Title: Improvements in the polymerisation of vinyl compounds
Inventor: MIRABILE FRANK ANDREW
IPC: C08F18/08
Filed: 1960-03-28
Abstract: Polymerization of methyl methacrylate, styrene or vinyl acetate is effected in the presence of an aluminium tri (lower alkyl) and oxygen.  Aluminium alkyls specified are aluminium triisobutyl, trimethyl, triethyl, tripropyl, triisopropyl, tributyl, triamyl, triisoamyl, trihexyl, triisohexyl, triheptyl and trioctyl.  The reaction may be performed in an inert solvent such as pentane, hexane, cyclohexane, n-heptane, octane, benzene, xylene and toluene.
Patent GB-142656-A (GB)
Title: Improvements in bobbins used for spinning and like purposes
IPC: B65H75/18
Filed: 1919-11-03
Abstract: 142,656. Merchant, A. Nov. 3, 1919. Bobbins.-Rove or spinning bobbins having their flanges grooved to receive a protective band are provided with protective bands 3 of rubber of circular cross-section.
Patent GB-1398282-A (GB)
Title: Treatment of inorganic building materials
IPC: C09D133/14
Filed: 1972-03-09
Abstract: 1398282 Protecting surfaces of building material NATIONAL PATENT DEVELOPMENT CORP 9 March 1973 [9 March 1972] 11160/72 Heading ASE [Also in Divisions B2 and D1] In a process for improving the durability and weather-resistance of any exposed surface of an inorganic building material, in which the surface is impregnated with a water-insoluble hydrophilic polymer of a hydroxy lower alkyl acrylate or methacrylate, a hydroxy lower alkoxy lower alkyl acrylate or methacrylate, or a lower alkoxy lower alkyl acrylate or methacrylate, to form a moisture vapour-permeable coating on the surface, a microbiocide may be mixed with the polymer and leechably entrapped in the finished coating. Long lists of suitable bactericides and fungicides are given. In Example 9 1% of bis (n-propylsulphonyl) ethylene, and 1% of hexachlorophene, based on the weight of polymer, are mixed with a 5% solution in a 50-50 mixture of ethanol and methyl cellosol of a copolymer formed by reacting hydroxyethyl methacrylate and methyl methacrylate in a weight ratio of 140:60 in ethanol, and the composition sprayed on to a concrete block and a concrete road surface. The resulting coated block and road surface have increased resistance to microorganisms due to the slow release of the microbiocide entrapped in the polymer.
Patent GB-1157530-A (GB)
Title: Nickel-Containing Monoalkyl Phosphites.
IPC: C07F9/02
Filed: 1967-03-09
Abstract: 1,157,530. Nickel-containing monoalkyl phosphites and co-ordination derivatives thereof. INTERNATIONAL NICKEL Ltd. 9 March, 1967 [24 March, 1966], No. 11192/67. Heading C2C. The invention comprises nickel compounds of the formula (I) Ni[OP(OR)(OH)] 2 , where R is a straight or branched chain C 1 -C 12  alkyl group and (II) L 2 -Ni[OP(OR)(OH)] 2 , wherein L is a ligand containing a N, O or P atom as electron donor and R is as defined above. Compounds I may be prepared by reacting an alkali metal salt of the formula (MO)P(OR)(OH), wherein M is alkali metal with a nickel salt in solution in a polar organic solvent under strictly anhydrous conditions, normally at room temperature and at atmospheric pressure and the compounds II may be obtained by reacting the ligand L with a compound I in solution in an organic solvent, e.g. dimethoxyethane, under strictly anhydrous conditions. The ligand L may be a C 1 -C 12  alcohol, or an organic phosphine or phosphite, e.g. n-butanol, 2- ethylhexanol, tri-2-ethyl hexyl phosphite, and tri-n-butyl or tri-phenyl-phosphines or-phosphites. The alkali metal salt (MO)P(OR)(OH) used in preparing compounds (I) may be obtained by dissolving an alkali metal hydroxide in a non-aqueous medium, e.g. toluene, under reflux, and reacting the solution with a dialkyl phosphite. In preparing compounds (II) the compounds I may, after isolation, be dissolved in a non-polar organic solvent and the ligand added in solution in the same or another non- polar solvent or the reaction to form compounds (I) may be carried out without isolation of the nickel compound (I) and subsequently reacting it with the ligand L in solution in a polar organic solvent under strictly anhydrous conditions. Nickel mono-butyl phosphite and nickel mono-(2-ethyl-hexyl) phosphite have nematocidal properties.
Patent GB-580154-A (GB)
Title: An improved rubber substitute
Filed: 1944-06-12
Abstract: Tar or pitch oil having a boiling point above 300 DEG  C. is mixed with a lesser amount of vegetable oil, and reacted with sulphur or sulphur chloride to form a rubber substitute.  700 parts of pitch oil distillate are blended with 300 parts of linseed oil and heated to 150 DEG -160 DEG  C.  250 parts of sulphur are added gradually with stirring and the temperature is raised.  Reaction takes place at 160 DEG -180 DEG  C.  If sulphur chloride is used the temperature must be kept below 100 DEG  C.  Small amounts of vulcanization accelerators such as di-o-tolyl guanidine may be added to the mixture before the sulphur.ALSO:Tan or pitch oil having a boiling point above 300 DEG C. is mixed with a lesser amount of a vegetable oil and reacted with sulphur or sulphur chloride to form a rubber substitute.  700 parts of pitch oil distillate are blended with 300 parts of linseed oil and heated to 150-160 DEG C. 250 parts of sulphur are added gradually with stirring and the temperature is raised.  Reaction takes place at 160-180 DEG C.  If sulphur chloride is used the temperature must be kept below 100 DEG  C.  Small amounts of vulcanization accelerators, such as di-o-tolyl guanidine may be added to the mixture before the sulphur.
Patent GB-1144763-A (GB)
Title: Process of and apparatus for establishing an intimate contact between fluid media
IPC: B01F25/74
Filed: 1966-03-15
Abstract: 1,144,763. Contacting gases or vapours with a liquid; mixing projected fluid streams. G. A. NILSSON. 15 March, 1966 [15 March, 1965], No. 11390/66. Headings BlC and B1R. Apparatus for contacting a gas or vapour with a liquid or another gas or vapour comprises a housing 10 within which is mounted on a shaft 3 a rotatable frusto-conical chamber 1 to which the fluid media to be contacted are fed via concentric tubes 4 and 5. the chamber 1 having at its upper end a peripheral slot 8 through which the fluid media being contacted move outwardly as the chamber is rapidly rotated. When one of the fluids is a liquid the liquid is introduced through the tube 5 and the base of the housing serves a sump for separated liquid and from which liquid may be recirculated through the chamber 1 or withdrawn via pipe 13. In modifications there may be a common inlet tube for the fluid media to be contacted and the peripheral slot may be sub-divided by radially extending partitions. In a further modification the rotatable chamber may be of double frusto-conical form the peripheral slot being formed between an upper and lower section of the chamber where it has its greatest diameter. The apparatus may be used for washing dust-laden gas or for atomising a liquid fuel into a stream of air.
Patent GB-108704-A (GB)
Title: Improvements in Engine-starting, Lighting and/or Heating Apparatus for use on Motor and other Vehicles.
Inventor: RHODES WILLIAM FREDERICK WILKI
IPC: B60R16/02
Filed: 1916-08-12
Abstract: 108,704. Rhodes, W. F. W., and Firth, J. Aug. 12, 1916. Addition to 107,260, Dynamos, driving.-The apparatus described in the parent Specification is modified so that the dynamo may act as a starting motor. The dynamo-electric machine may have variable-speed friction gearing working in conjunction with a centrifugal governor controlling a device for cutting out the dynamo when the engine speed falls to a predetermined limit, as described in the earlier Specification. The driving-mechanism between the dynamo-electric machine and the shaft A may be modified as shown in Fig. 2, in which the friction wheels A, B have at M, M<1> additional contacting surfaces which engage during the starting operation. Wheel teeth may be provided on the conical surfaces M, M<1>.
Patent GB-233357-A (GB)
Title: Improvements in or relating to temperature indicating devices
IPC: G01K1/14
Filed: 1925-05-01
Abstract: 233,357. Rasche, G. W. May 2, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Cylinders, cooling.- For measuring the temperature of the cylinder of an air-cooled engine, a thermometer 2 is mounted in a hollow space within a heatconducting casing 1 which has a lug &c. 6 adapted to be clamped on the sparking-plug flange or on some other flange on the cylinder. The thermometer may be of the distant-indication type.
Patent GB-495627-A (GB)
Title: Improvements in and relating to evaporators for refrigerating machines
IPC: C07C51/02
Filed: 1938-04-13
Abstract: 495,627. Refrigerating. BRITISH THOMSON-HOUSTON CO., Ltd. April 13, 1938, No. 11406. Convention date, April 17, 1937. [Class 29] An evaporator for a refrigerating mach ine includes a metallic conduit 25 having a number o: indentations 28 form ing reservoirs for trapping the liquic refrigerant during the inoperative periods of the machine. The conduit is formed by indentation of at least one pair of sheet-metal members secured together face to face. During operation, liquid and gaseous refrigerant is admitted to the conduit 25 at the upper end 17 and is withdrawn at 18 to pass to the compressor 13 and condenser 14. In a modification, the evaporating coil forms part of a freezing shelf.
Patent GB-1497238-A (GB)
Title: High efficiency power supply having a reactive buck automatic dc voltage regulator
IPC: G05F1/13
Filed: 1976-03-22
Abstract: 1497238 Automatic voltage regulation BURROUGHS CORP 22 March 1976 [21 April 1975] 11406/76 Headings G3R and G3X A ferroresonant voltage regulating circuit includes an auxiliary bucking transformer with a secondary winding connected in series with the output winding of the main transformer. The bucking transformer directly controls the main transformer output so as to regulate a D.C. output voltage. As shown in Fig. 2, an unregulated A.C. input voltage is supplied to terminals 13, 13' connected to primary winding 63 of a ferroresonant transformer 11. Ferroresonance is established by a tuned circuit 65, 67 on the opposite side of magnetic shunts 61 from the winding 63. A load winding 69 is connected to regulated D.C. output terminals 25, 27 by way of secondary windings 73, 87 of an auxiliary bucking transformer 75, rectifiers 79, 91 and a filter circuit 23. The primary winding 101 of the auxiliary transformer 75 is connected in series with an excitation winding 103 of the main transformer 11 and a rectifier bridge circuit, the voltage across which is controlled by a transistor 139 responsive to an amplifier 153 which compares the D.C. output voltage with a reference level. The bucking effect of windings 73, 87 is thus dependent both on the output signal from the main transformer 11 and on a negative feedback signal from the comparator 153. In another embodiment, Fig. 3 (not shown), additional circuitry is included to improve transient response when the supply circuit is turned on and off. Rectifiers 79, 91 are replaced by Schottky diode pairs, and a Zener diode is used to provide a reference voltage.
Patent GB-471319-A (GB)
Title: Improvements in or relating to the driving of scavenging pumps for internal combustion engines
IPC: F02B33/00
Filed: 1937-04-21
Abstract: 471,319. Pumps. AKTIEBOLAGET ATLAS DIESEL. April 21, 1937, No. 11439. Convention date, April 23, 1936. [Class 7 (ii)] A scavenging-pump 11 is driven by a shaft 7 extending along the side of the engine and connected to the main shaft adjacent the flywheel 3, or other device for preventing vibration. The connection at each end of the shaft 7 may be by spur or chain gearing, but at the pump end it is, preferably direct. As shown, the intake duct of a centrifugal pump faces the outside and the pump forces air through a duct 13 to a chamber 14 extending along the side of the engine above the shaft 7.