baber/WOPTO huggingface dataset:
Patent GB-1183434-A (GB)
Title: New Heat-Curable Mixtures of Polyepoxide Compounds, Polyesters and Polycarboxylic Acid Anhydrides
IPC: C08L63/00
Filed: 1968-04-11
Abstract: 1,183,434. Epoxy resins. CIBA Ltd. 11 April, 1968 [19 April, 1967], No. 17692/68. Heading C3B. Heat curable epoxy resin compositions comprise: (1) a polyepoxide; (2) 0À5-1À2 anhydride equivalents per epoxide equivalent of (1) of a polycarboxylic acid anhydride; and (3) 0À01-0À2 moles per epoxide equivalent of (1) of a long chain polyester: X<SP>1</SP>-A-X<SP>2</SP> in which X<SP>1</SP> and X<SP>2</SP> are carboxyl or hydroxyl groups. A is a polyester residue containing branched or unbranched alkylene or alkenylene chains alternating with carboxylic acid ester groups; the quotient Z/Q, where Z is the number of carbon atoms in the repeating unit of A and Q is the number of oxygen bridges in the said repeating unit, is at least 5; the total number of carbon atoms present in the hydrocarbon radicals of A is at least 50. Suitable polyepoxides are e.g. 3,4-epoxycyclohexylmethyl- 3<SP>1</SP>,4<SP>1</SP> - epoxycyclohexane carboxylate and its 6,6<SP>1</SP>-dimethyl homologue, 3,4-epoxyhexahydrobenzal - 3<SP>1</SP>,4<SP>1</SP> - epoxycyclohexane - 1<SP>1</SP>,1<SP>1</SP> - dimethanol, triglycidyl isocyanurate, N,N<SP>1</SP> - diglycidyldimethylhydantoin and conventional glycidyl ethers and esters. The polyester may have the formula .. or HO.R<SP>2</SP>.(O CO.R<SP>1</SP>.CO.OR<SP>2</SP>) m OH, in which R<SP>1</SP> and R<SP>2</SP> are branched or unbranched alkylene or alkenylene chains; the number of carbon atoms in R<SP>1</SP> and R<SP>2</SP> together is at least 8 and the product of m and the sum of the carbon atoms in R<SP>1</SP> and R<SP>2</SP> is at least 50. Alternatively the polyesters may have the structure ' or in which R<SP>3</SP> is an alkylene chain of at least 5 carbon atoms; R<SP>4</SP> is an aliphatic hydrocarbon radical; the product of (a + b) and the number of carbon atoms in R<SP>3</SP> is at least 50. A typical polyester is one prepared by condensing 11 moles of adipic acid with 10 moles of 1,6- hexanediol. The compositions may be cured by heating, e.g. at 100-200‹ C. optionally in the presence of conventional accelerators.
Patent GB-231375-A (GB)
Title: Improvements in grease-cup lubricators
IPC: F16N21/04
Filed: 1924-07-24
Abstract: 231,375. Petersen, J. C. July 24, 1924. Butt joints ; couplings, disconnectible ; w i t h valves. - A grease cup having a spring-pressed filling valve e fitted in the cover b is filled from a pump through a mouthpiece r having arms q with inturned ends p which co-operate with the inclined under-surface of the interrupted flange n of the cover so as to clamp the mouthpiece to the cover. A resilient washer s ensures a tight joint.
Patent GB-927901-A (GB)
Title: Method and apparatus for the reinforcement of glass fibre webs or mats
Inventor: SCHULLER WERNER HUGO WILHELM
IPC: D04H3/004
Filed: 1958-06-03
Abstract: 927,901. Laminates and laminating. W. H. W. SCHULLER. June 1, 1959 [June 3, 1958], No. 17759/58. Class 140. Apparatus for applying reinforcing elements, e.g. slivers, yarns, threads, strips or rovings across a continuously moving mat, web or the like of staple fibres of thermoplastic material, e.g. glass, comprises a conveyer on which the mat is supported and a main carriage which can be reciprocated along the conveyer so that when they are both travelling in the same direction there is no relative movement between them. Grippers for engaging a plurality of the reinforcing elements from one or more sources of supply are mounted on a second carriage which is positioned on the main carriage, and can be moved across the conveyer and perpendicularly thereto. The grippers can therefore draw the reinforcing elements through tensioning members into position above the mat and then lower them into contact with the mat while the conveyer and main carriage are relatively stationary. Means are also provided to sever the reinforcing elements from their source of supply and for drawing the severed ends of the reinforcing elements into a position where they may readily be engaged by the gripper in a subsequent operation. In the Figure, the base web 1 with lengthwise reinforcements 2 is carried by a conveyer (not shown) in the direction perpendicular to the plane of the paper. Reinforcing means V from bobbins 3 are passed over braking shafts 4 and 5 and guide rods 45 and 46 and through holder 42 to the gripper 10. The flight attachment 8 on the chain 7 engages the lever 6 and draws the gripper carriage 25 across the web, raising the restoring rod 13. The gripper 11 then closes on the ends c of the reinforcement V11 which are blown by a stream of air from the holder 42 into the mouth of the gripper. The gripper track is then lowered towards the web, the gripper 10 is opened, and the restoring rod pulls the reinforcement back until the rod strikes the pawl 12. The band burner 30 is then ignited, and severs the reinforcement close to the edge of the conveyer. The restoring rod then continues to fall drawing the reinforcement back to a position to be ready to be gripped by the grippers when they return. Meanwhile the gripper carriage can on the return stroke draw across and lay reinforcement V<SP>11</SP> in the same manner. A moving glass-fibre mat may be reinforced by laying a first series of reinforcing elements along the mat, lying a second series across the mat by means of the apparatus described above, laying a third series of reinforcing element along the mat in spaced relationship to each other and to the members of the first series, e.g. each member of each of the first and third series may be half way between the two nearest members of the other series, and bonding the reinforcing elements to the mat. Specifications 686,564 and 805,551 are referred to.
Patent GB-142367-A (GB)
Title: A protective transformer for preventing the passage of currents of dangerously high tension over electric signalling circuits
IPC: H01F29/12
Filed: 1919-07-16
Abstract: 142,367. Perego, A. July 16, 1919. Transformers.-A transformer is used with signalling apparatus to prevent high-tension currents from flowing on the secondary side through the instruments, by having one winding movable to operate a safety switch under the stress produced by an excessive current. As shown in Fig. 5, the fixed primary coil P is in the form of a truncated cone. This is normally surrounded by a cup-shaped secondary S which is secured to a counter-weight and is raised when a heavy current passes to close the switch contacts A, B to short-circuit the winding S or the winding P. In a modification, the safety switch is arranged to break the secondary or primary circuit, and a detent is provided to retain the secondary coil in position after it has been moved. A metallic mass M may be placed in the insulation between the primary and secondary coils, and may be earth-connected through the winding of a relay which controls a switch to short-circuit the primary or secondary.
Patent GB-747456-A (GB)
Title: Improvements in or relating to grease guns
IPC: F16N3/12
Filed: 1954-06-17
Abstract: 747,456. Grease guns. WISELY, R. A. June 17, 1954 [July 1, 1953], No. 17832/54. Class 102(1). In a grease gun, the pump plunger 11A is connected to a piston rod 11 carrying a piston 10 continuously subjected to pneumatic pressure through connection 4. The delivery stroke is effected by pressing button 5 to close the exhaust valve 7 and continues until the piston 10 uncovers restricted exhaust openings 19 in the barrel 1. The return stroke is effected by spring 13 when the valve 7 is opened; a relief valve 20 is fitted to the barrel 1. The grease is packed in the barrel 1 which is fitted with a follower piston 17 ; a light spring 18 is fitted between the pistons 10, 17. The inlet ports 15 in the pump cylinder 12 are controlled by the plunger 11A.
Patent GB-723107-A (GB)
Title: Filtering device
IPC: B01D29/21
Filed: 1951-07-27
Abstract: 723,107. Filters. BENDIX AVIATION CORPORATION. July 27, 1951 [Aug. 15, 1950], No. 17888/51. Addition to 723,200. Class 46. In a filter element interposed between an inlet passage and an outlet passage, and including pleated filtering material surrounding a perforated core and having end plates, a shell closely surrounds the filtering material and is spaced from both plates. An element comprising a cylinder of vertically-pleated resinimpregnated paper or the like 32 around a perforated core 38 has plates 34, 36 cemented to the pleat ends and is held against a head 10 by a spring 48 interposed between the inside of the head and a nut 50 on a rod 46 connected to the lower plate 36. A shell 54 also of resin-impregnated paper or the like is secured by an adhesive to the outside edges of the pleats, leaving annular flow passages 56, 58 between its ends and the plates 34, 36, respectively. The shell provides for longitudinal flow during backwashing and filtering which tends to free or keep free from dirt the surfaces of the pleats. Also the impact of liquid against the end plates during backwashing removes dirt from them. The perforations 52 of the core 38 are preferably concentrated near the upper end as shown.
Patent GB-791158-A (GB)
Title: Improvements in and relating to the electric control of winder drives
Inventor: PROWSE DONALD WINDSOR
IPC: H02P5/00
Filed: 1954-06-18
Abstract: 791,158. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. May 31, 1955 [June 10, 1954], No. 17992/54. Class 38 (3). An electric winder motor has a control member with a zero position between speed-control positions for load-raising and load-lowering respectively. When the control member is moved in the load-lowering direction, and before a mechanical brake for the motor is released, a dynamic braking circuit is closed automatically, thus preventing excessive acceleration of the load by gravity force during the interval from the release of the mechanical brake, when the load starts its downward motion, until the instant when a speed-responsive device becomes effective to stabilize the speed of descent. As shown, the direction and rate of rotation of the control member depends upon the direction and degree of excitation of coil 11. Reversing contacts PR, PRa and PL, PLa are provided for raising and lowering operation, whilst a motor-driven tachometer generator 12 is connected in circuit with a variable resistor 13 operated by a master control lever. Additional contacts B, Ba, B<SP>1</SP> are interlocked with the brake, and an auxiliary source across resistor 16 is adapted to supply current to the coil 11. When the control lever is moved to the " lower " position, contacts O and La are closed, so that the coil 11 is energized so long as contact B<SP>1</SP>, which is interlocked with the brake, remains closed. The excitation so provided prior to the release of the brake is such as to rotate the controller in a direction to afford dynamic braking of downward motion. Specification 791,076 is referred to.
Patent GB-121179-A (GB)
Title: Improvements in Devices for use in Lighting Miners' Safety Lamps.
Inventor: PILKINGTON JAMES
IPC: F23Q1/00
Filed: 1917-12-05
Abstract: 121,179. Pilkington, J. Dec. 5, 1917. Closed casings for igniting miners' safety lamps underground.-Relates to the provision of a locking-means for lamps of the type wherein a sliding sleeve e is used upon a casing in one part a' of which is an electric means for igniting a lamp b placed in the other part a<2>; this sleeve covers the opening through which the lamp is inserted, while it leaves the opening d, for reception of the circuit-closing tool, open. In one form, Fig. 1, the sleeve e is locked in the position shown by the circuit-completing instrument c or operating-handle, which is passed thrcugh an opening in the casing wall and further secured by a padlock h. In modifications, (1) a pin is used as a lock in place of the instrument c, (2) the arm of the padlock passes through the casing wall, (3) a spring-retracted pin on the sleeve is adapted to engage an opening in the casing and can only be unlocked magnetically, (4) a vertically movable pin o, Fig. 8, is carried by an arm o' which may be raised and swung about a pin o<2> on the casing when the padlock h is unlocked, and (5) a link n, Fig. 6, secured by one or more links n<1> to the part a<2>, is normally padlocked to a lug e' on the sleeve e.
Patent GB-1040993-A (GB)
Title: Nitrile rubbers
IPC: C08F236/04
Filed: 1964-04-30
Abstract: An oil resistant nitrile rubber comprises a copolymer of a conjugated diolefin and an unsaturated aliphatic nitrile in which the copolymer is essentially formed from a monomer mixture of 40 to 70% of a conjugated diolefin of 4 to 6 carbon atoms, 20 to 40% of an unsaturated aliphatic nitrile and 10 to 40% of an alkenyl aromatic monomer, is gel free and forms a solution of fluid viscosity in aromatic hydrocarbon solvents.  Butadiene is the preferred conjugated diolefin although isoprene, piperylene, methylpentadiene and 2,3-dimethyl-1,3-butadiene are specified, while acrylonitrile is the preferred nitrile from methacrylnitrile and ethacrylonitrile. Specified vinyl aromatic monomers are styrene, alpha-methylstyrene, vinyl toluene, vinyl naphthalene, vinyl furane, vinyl carbazole, vinyl pyrrolidone and vinyl pyridine. The copolymers may be made by the conventional aqueous emulsion polymerization using alkali metal persulphates, percarbonates, perborates and hydrogen peroxide as catalysts, or, if at low temperatures Redox systems using diisopropyl hydroperoxide with iron pyrophosphates or polyalkylene polyamines. The usual emulsifiers and short-stoppers may be present. The products are particularly useful as rubber cements.
Patent GB-298587-A (GB)
Title: Process for the manufacture of bismuth oxide, bismuth carbonate, and other compoundsof bismuth
IPC: C01G29/00
Filed: 1927-07-07
Abstract: 298,587. Carreras, R. S. July 7, 1927. Bismuth hydroxide and bismuth carbonate, obtaining.-Bismuth hydroxide is obtained by electrolysis of a weak e.g. 3 per cent solution of sodium chlorate charged with carbonic acid gas, using anodes of bismuth and cathodes of carbon, zinc, iron, aluminium or other suitable metal. The electrolyte is regenerated with carbonic acid gas within or without the cell. The cell may be of 500 litres capacity, the electrodes 30 cm. by 30 cm. spaced 5 cm. apart; a current density of 0.6 amps per sq. dcm. at 3 volts and a temperature of 40‹ C. are employed. Slightly carbonated bismuth hydroxide is precipitated; the carbonate is removed by washing. According to the Provisional Specification bismuth carbonate may be precipitated by employing a high percentage of carbonic acid gas in the electrolyte.
Patent GB-314336-A (GB)
Title: Improvements in and relating to flying machines
IPC: B64C27/04
Filed: 1929-06-12
Abstract: 314,336. Perrin, E. A. June 25, 1928, [Convention date]. Clutches, free-wheel.-The clutch member for driving an aircraft screw has an internal ring 80 of trapezoidal section adapted to be engaged by friction pawls 87 pivoted at 88 between flanges on a tubular extension 82 of the screw shaft. Springs 91 press the pawls into engagement with the ring so as to form a free-wheel clutch. Tail pieces 86 on the pawls are engaged by pins 85 sliding in holes in the extension 82, the inner ends of the pins being engaged by a cone 90 movable axially by a push rod to enable the clutch to be uncoupled.
Patent GB-318330-A (GB)
Title: Improvements in or relating to vehicles for lifting and lowering loads
IPC: B66C23/36
Filed: 1928-06-22
Abstract: 318,330. Thornycroft & Co., Ltd., J. I., Thornycroft, Sir J. E., and Thornycroft, R. June 22, 1928. Rest-bars and supports. - Portable apparatus for transferring vehicle bodies or goods containers 5 between rail and road vehicles 3, 4 comprises a vehicle 1 fitted at each end with a laterally movable structure 10, 11 for raising and transferring the load and provided with means to prevent overturning. As shown in Fig. 2, a bar 6 at each end of the vehicle 1 is jointed to a longitudinal bar thereon and carries a pivoted arm 7 for gripping a rail of the adjacent track. In a modification, Fig. 4, screw-jacks 66 are pivoted on each side of the chassis and engage the ground by shoes 69, outward movement of the shoes being restrained by chains 70. The jacks may be closed up and turned to an inoperative position when not in use.
Patent GB-1354851-A (GB)
Title: Method and device for remotely providing a measurement of an  electric current in a high voltage line
IPC: G01R15/24
Filed: 1972-04-19
Abstract: 1354851 Measuring current in high voltage lines BALTEAU S A 19 April 1972 [20 April 1971] 18169/72 Heading G1U In a system for measuring the current in a high voltage line 6a, Fig. 1 the output of a generator 1 is divided into two signals by a hybrid-T junction 5, 5a, 5b, one of the signals is phase-modulated with the line current by a ferrite modulator 6 and applied, via a further modulator 12, to one of the symmetrical inputs of a second hybrid-T junction 7 functioning as a comparator, the other signal is applied via a fixed phase shifter 9a and a third phase modulator 8 to the second symmetrical input of the comparator hybrid-T 7, and the E and H outputs of the comparator 7 are applied to a differential amplifier 9 and an amplifier 10 to produce an output current which controls the phase modulator 8 in such a way that the two inputs to the comparator 7 are substantially equal, whereupon the output current from the amplifier 10 is proportional to the unknown line current and can be displayed on a conventional meter (not shown). The differential amplifier 9 also provides a signal for the modulator 12 which is said to compensate for frequency and/or power variations in the output of generator 1. Signals from the generator 1 are transmitted to and from the vicinity of the high voltage line 6a by wave guides 2, 3, 4, which preferably include temperature stabilizing means such as a circulating fluid. In a first modification Fig. 2, (not shown) instead of comparing the two outputs of the hybrid-T comparator 7 in the differential amplifier 9, only one output is used and this is compared with a fixed reference signal. Further, instead of compensating for frequency and/or power variations by modulator 12, the output of amplifier 14 may act directly on the generator 1. In a second modification Fig. 3, (not shown) the waveguide 2 can be dispensed with by using an arrangement of circulators. In a third modification Fig. 4 (not shown) the modulator 9a and the hybrid-T 7 can be omitted and the signals can be detected (20, 23) before being applied to the differential amplifier 9, and the modulator 12 can be omitted by effecting direct control of the generator 1 by means of a further detector (21).
Patent GB-741584-A (GB)
Title: Improvements in or relating to catalyst recovery process
IPC: B01J31/40
Filed: 1953-07-01
Abstract: In the liquid phase air oxidation of xylenes to produce toluic acids in the presence of a cobalt, manganese, or cerium salt catalyst, the mixture of reaction products is maintained at 120-200 DEG  C. while saturated with water and in contact with a gas containing no more than about 4 per cent by volume of oxygen, in order to precipitate the catalyst.  Precipitation may take place in 1-15 minutes, and the catalyst is then filtered off and used again in the process.  When a cobalt salt is used, e.g. cobaltous toluate, the cobaltic salts formed during the reaction are reduced to insoluble hydrated cobaltous salts.  After separation of the catalyst, purified toluic acids may be obtained as described in Speci738,801.  In examples, the reaction is carried out (1) in a stirred autoclave at 160 DEG  C. and 200 p.s.i.g. pressure, the catalyst being precipitated in 10 minutes after stopping the air flow; (2) by countercurrent contact of air with a xylene fraction containing the catalyst in an oxidation tower at 153 DEG  C. and 200 p.s.i.g. pressure, the product being withdrawn to a surge tank where it is blanketed by the effluent gas stream, and then filtered to remove precipitated catalyst.  The xylenes may be prepared by hydroforming petroleum naphtha, and may contain ethyl benzene which is oxidized to acetophenone.ALSO:Catalyst is recovered from the reaction mixture produced by the liquid phase air oxidation of xylenes to produce toluic acids in the presence of a cobalt, manganese or cerium salt catalyst, by maintaining the mixture of reaction products at 120 DEG -200 DEG C while saturated with water and in contact with a gas containing no more than about 4 per cent by volume of oxygen, in order to precipitate the catalyst. Precipitation may take place in 1-15 minutes, and the catalyst is then filtered off and used again in the process. When a cobalt salt is used, e.g., cobaltous toluate, the cobaltic salts formed during the reaction are reduced to insoluble hydrated cobaltous salts.  In examples the reaction is carried out (1) in a stirred autoclave at 160 DEG C and 200 p.s.i.g. pressure, the catalyst being precipitated in 10 minutes after stopping the air flow; (2) by countercurrent contact of air with a xylene fraction containing the catalyst in an oxidation tower at 153 DEG C and 200 p.s.i.g. pressure, the product being withdrawn to a surge tank where it is blanketed by the effluent gas stream, and then filtered to remove precipitated catalyst. Specification 738,801, [Group IV(b)] is referred to.
Patent GB-1129644-A (GB)
Title: Synthetic polyester sizing composition for yarns
Inventor: ROBERTSON MICHAEL MUNDIE
IPC: D06M15/263
Filed: 1965-04-30
Abstract: 1,129,644. Sizing composition for polyester yarns. IMPERIAL CHEMICAL INDUSTRIES Ltd. 26 April, 1966 [30 April, 1965], No. 18328/65. Headings C3P and C3R. [Also in Division D1] A film-forming sizing composition for polyester yarns comprises a mixture, in aqueous dispersion, of (a) one or more water-soluble or -dispersible vinyl polymers or copolymers containing carboxylic acid units, either (i) present as ammonium salts or (ii) in the presence of a nucleophilic organic solvent, and (b) a crystallizable polymer of viscosity ratio between 1À1 and 1À5, as determined in 1% o-chlorophenol solution at 25‹ C., and having a crystalline melting point above 100‹ C., measured as the temperature of disappearance of birefringence, containing crystallizable segments of repeat units identical with the repeat units of the crystallizable portions of the polyester filaments, and at least one polyoxyethylene group derived from a polyoxyethylene glycol or diamine of average molecular weight 300-6000. Suitable monomer components of the vinyl polymers include vinyl acetate, propionate, butyrate, stearate or benzoate, acrylic and methacrylic esters, vinyl chloride, vinylidene chloride, styrene, ethylene, acrylonitrile, methacrylonitrile, isoprene, butadiene and alkyl vinyl ethers. The sizing compositions may also contain swelling agents, e.g. benzaldehyde, benzyl alcohol, methyl salicylate, chloroform, trichlorethylene, o-dichlorbenzene, dimethyl phthalate, methylene chloride, diethyl oxalate, diethyl sucoinate, methyl iodide, tetrachlorethane, ophenylphenol and 1-phenyl ethanol. In the examples polyethylene terephthalate yarn is treated with compositions containing a dispersion of a polymer obtained by condensation of dimethyl terephthalate with ethylene glycol and a polyethylene glycol of M.W. 1540 i.p.o. 2-α- methylcyclohexyl - 4: 6 - dimethylphenol, calcium acetate, and antimony trioxide, and (1) ammonium polyacrylate, (2) the ammonium salt of a partially hydrolysed polymethyl acrylate or (3) a commercial vinyl copolymer containing ammonium carboxylate groups.