baber/WOPTO huggingface dataset:
Patent GB-849448-A (GB)
Title: Improvements in or relating to nozzles for jet propulsion purposes
Inventor: OULIANOFF GEORGE
IPC: F02K1/48
Filed: 1957-03-22
Abstract: 849,448. Deflecting propulsive jets. ROLLSROYCE Ltd. March 17, 1958 [March 22, 1957], No. 9578/57. Class 4. [Also in Group XXVI] In a jet propulsion nozzle for an aircraft bypass gas turbine engine wherein the propulsive jet is divided into a plurality of channels for noise suppression and the jet may be deflected forwardly for braking purposes the jet pipe 10 is contained within an outer wall 12 to form an annular duct 11 for by-pass air which exhausts into a plurality of circumferentially spaced hollow structures 16 each comprising diverging side walls 16a which are bridged by a wall 22 and terminate in ears 18 for pivotal movement about tangential pivots 17 under the control of jacks 20. Separate channels 31 are formed between the structures 16 which split up the jet and reduce noise. A port 15 is provided in the jet pipe aft of and in alignment with each structure 16 and a triangular grid 23, 24 is mounted between the jet pipe and an outer fairing 21, which is formed with corresponding ports 25. Each grid is mounted at its rear apex on a pair of pivoted links 29 and at its forward base to a pair of ears 18 for movement in association with the appropriate structure 16 from the position shown in Fig. 1 to that shown in Fig. 3 wherein all of the structures abut one another and a central bullet 13 to blank-off the outlet of the jet pipe, thereby causing the exhaust gases and by pass air to flow out through the structures 16 to the grids 23, 24 which deflect the jet forwardly. Certain of the ports may be blanked off where necessary to prevent hot gases impinging on parts of the aircraft structure. If the engine is not of the by-pass type, the duct 11 may open to atmosphere through suitable air intakes from which mixing air is conveyed to the nozzle and when the structures 16 are moved to the position of Fig. 3 exhaust gases will be ejected forwardly through duct 11 and the air intakes as well as through ports 25. Specification 768,553 is referred to.
Patent GB-918679-A (GB)
Title: Improvements in or relating to control circuitry
IPC: G05B11/28
Filed: 1959-03-19
Abstract: 918,679. Transistor pulse circuits. MINNEAPOLIS-HONEYWELL REGULATOR CO, March 19, 1959 [March 25, 1958], No. 9605/59. Class 40 (6). [Also in Group XXXV] A circuit for delivering a pulse width modulated output proportional to an input signal comprises a cyclically varying D.C. source 33, 43, 45 charging a capacitor 25 connected in parallel with the collector 13 and emitter 12 electrodes of a transistor 10 and in series with the base 17 and emitter electrodes 16 of a transistor 11 which maintains the charging current constant. The input signal connected to transistor 10 varies its conductivity, hence varies the voltage across the capacitor 25, thus determining the time in each half-cycle during which a series resistor 46 carries current. The potential across resistor 46 fires a transistor 54 which is connected in a bi-stable circuit with another transistor 67, which switches a power transistor 86 connected in series with a load R L  supplied from D.C. terminals 51, 52. The sensitivity of the circuit may be increased by removing the resistor 46 and shunting a resistor 61. A list of typical component values is given in the Specification.
Patent GB-676153-A (GB)
Title: N-isopropylaminopropiophenones
Filed: 1950-04-19
Abstract: The invention comprises the compounds 2 : 4 - dihydroxy - a  - isopropylaminopropiophenone, 3 : 4 - dibenzyloxy - a  - isopropylaminopropiophenone, and their salts, specifically the hydrochlorides, hydrobromides and sulphates.  Other salts may be formed by use of phosphoric, acetic, propionic, and benzoic acids. In the examples: (1) 3 : 4-dibenzyloxy - a  - bromopropiophenone is treated with isopropylamine to give 3 : 4-dibenzyloxy-a -isopropylaminopropiophenone (isolated as the hydrobromide).  The hydrochloride is obtained using hydrochloric instead of hydrobromic acid.  The free base is obtained by treatment of the salt with triethanolamine and extraction with ether; (2) 3 : 4-dibenzyloxy-a -isopropylaminopropiophenone hydrobromide obtained as in example (1) is reduced in alcoholic solution in the presence of palladium on charcoal catalyst to 3 : 4-dihydroxy-a -isopropylaminopropiophenone hydrobromide which may be converted into the free base with ammonium hydroxide; (4) the sulphate of the base formed in example (3) is produced by treatment with sulphuric acid in alcoholic solution; (5) the hydrochloride of 3 : 4-dihydroxy-a -isopropylaminopropiophenone is prepared by the reduction of 3 : 4 - dibenzyloxy - a  - isopropylaminopropiophenone using a palladium or charcoal catalyst. The compounds of the invention have a bronchodilator effect.
Patent GB-1133048-A (GB)
Title: Electric switch
IPC: H01H13/58
Filed: 1967-03-01
Abstract: 1,133,048. Mechanical switches. UNITED CARR Inc. 1 March, 1967 [1 March, 1966], No. 9707/67. Heading H1N. A rotary stepping switch is stepped on by successive actuations of push-button 12. Depression of push-button 12, mounted in housing 14 with its lugs 30 locating in slots 44, causes its teeth 32 to abut but not completely mesh with teeth 52 on movable contact carrier 16, mounted in housing 14 with its ribs 48 locating in slots 44, depressing it axially against the action of a spring until ribs 48 pass out of the end of slots 44 when teeth 32 completely mesh with teeth 52 rotating carrier 16 so that the movable contact 18, Fig. 3 (not shown), is also rotated. On release of push-button 12, the spring pushes carrier 16 and push-button 12 upwards and, as carrier 16 moves upwards, sloping surfaces 50 on ribs 48 engage sloping surfaces 42 further rotating carrier 16 till ribs 48 re-enter slots 44. Thus, on depressing and releasing the pushbutton, the movable contact, which is a bridging contact, breaks contact with the fixed contacts, rotates and re-engages a different pair of fixed contacts.
Patent GB-493147-A (GB)
Title: Improvements in the manufacture and production of dyestuffs of the naphthalene series
IPC: C09B13/02
Filed: 1937-04-06
Abstract: Dyes are prepared by reacting primary amines with reduction compounds of naphthazarin intermediate product or of the naphthalene derivative obtained according to Specification 489,236, with subsequent oxidation if necessary.  The reduction compounds are obtained by the use of hyposulphurous acid or a salt thereof, stable compounds being obtained when the reduction is carried out at a pH value of 10,4 or less, or at a greater pH at first, with a subsequent lowering thereof.  Examples 1 to 8 describe the production of the reduction compounds by sodium hyposulphite in water or aqueous solutions of sodium or potassium carbonate, caustic soda or secondary sodium phosphate, the pH being lowered, if necessary, by weak acids, carbon dioxide and acetic acid being specified.  Aqueous solutions or suspensions of salts of alkaline earth metals are also mentioned as suitable media for the reduction.  The products are crystalline and their properties, which vary with the pH of the reduction medium, are given in detail.  In examples: (9) a naphthazarin intermediate product, reduced at pH=10, is treated with an aqueous solution of methylamine, ethylamine, cyclohexylamine or benzylamine and air, diluted and acidified; (10) the naphthalene derivative obtainable according to the example described in Specification 489,236 is suspended in aqueous sodium carbonate, heated with sodium hyposulphite, n-butylamine added, followed by caustic soda and the passage of a current of air and subsequent acidification; (11) the reduction product of (9) is dissolved in p-phenetidine and acetic acid and heated; (12) a suspension of naphthazarin intermediate product in aqueous sodium carbonate is treated with sodium hyposulphite and p-phenetidine, air blown through and acidified with acetic acid; (13) either of the naphthalene derivatives is reduced in sodium carbonate solution with sodium hyposulphite and treated with an ethanol solution of p-aminophenolbenzyl ether, the mixture diluted with water, caustic soda added and air blown through.  The products are generally soluble in organic solvents, giving a blue to green colouration, serve to colour lacquers, artificial masses or fabrics of cellulose ethers or esters.  Dyes obtained with aromatic amines dye animal fibres directly or after the introduction of water-solubilizing groups.  Other specified amines are aniline, toluidines, aminopyridines and aminoquinolines.  Condensing agents, such as boric acid and sodium acetate, are mentioned for use in the reaction with amines.
Patent GB-670405-A (GB)
Title: Means for controlling a member of great length for use with wave guides
IPC: H01P1/00
Filed: 1950-04-20
Abstract: 670,405. Wave-guides. BRITISH THOMSON-HOUSTON CO., Ltd. April 20, 1950 [April 22, 1949], No. 9744/50. Addition to 668,782. Class 40 (viii). [Also in Group XL (c)] In a wave-guide according to the parent Specification in which an adjustable member is movable in a direction so as to alter the width of the guide and vary the phase velocity of waves passing along the guide, the adjustable member is moved uniformly at all points along its length by a plurality of means operable from a mechanism attached to a support for the guide, the mechanism being itself operable by an external source of power. In Fig. 1, the wave-guide comprises the space between a channel member 10 and a member 1 movable vertically between guide supports 4, 5. A source of power (not shown) drives bevel gearing 11, 13 which, through a pin and slot connection 15, 16 imparts an endwise reciprocating motion to a series of rods such as 21, 22 along the length of the guide. At intervals along the guide the rods are coupled to levers 24 pivoted at 28 and having at their free ends pin and slot connections 30, 32 for imparting a vertical reciprocating movement to the adjustable member 1. Endwise movement of the member 1 is prevented by a roller 41 at each end. Alternatively the levers 24 may carry cams at their free ends which engage rollers on the upper edge of the member 1; or wedge-shaped cams carried directly on the rods 21 may engage rollers on the member 1. In a further modification, Fig. 4, the rods 21, 22 are rotatable by a source of power and carry cams 71 which act through a roller 77 and plunger 76 to cause transverse movement of the member 1; or the rotatable rods may be coupled to the member 1 by a crank and eccentric mechanism. In all cases where cams are used, tension springs keep the member 1 in operative connection with the cams.
Patent GB-161175-A (GB)
Title: Improvements in synthetically produced hydrocarbon oils
IPC: C10G71/00
Filed: 1920-04-17
Abstract: In preparing lubricating-oils as described in Specification 141,753, the polymerized product is distilled first to separate products having the flash-points of naphtha and kerosene, and then to separate lubricating-oils which are divided into oil which has a flash point of about 300 DEG  F., and into heavier remaining oil which has a flash point of 425-450 DEG  F.ALSO:In preparing lubricating-oils as described in Specification 141,753, the polymerized product is distilled first to separate products having the flash-points of naphtha and kerosene, and then to separate lubricating-oils, which are divided into oil which has a flash point of about 300 DEG  F., and which also has a viscosity of 73 at 100 DEG  F. a fire test of 325 DEG  F. and a cold test of -60 DEG  F., and into heavier remaining oil which has a flash point of 425-450 DEG  F., a viscosity of 76 at 212 DEG  F., a fire test of 460-480 DEG  F., and a cold test of -4 DEG  F., and distils to the extent of 60 per cent within a range of 70 DEG  C.  The first fraction is suitable for use on aeroplanes, machineguns, and in ice-machines, and the heavier oil in internal-combustion engines.  Both the oils are suitable for use in shock-absorbers.
Patent GB-687242-A (GB)
Title: Combined traveling pulley block and swivel connector
Inventor: CHRISTENSEN BYRON CHRISTIAN
IPC: B66D3/06
Filed: 1951-04-26
Abstract: 687,242. Pulley-blocks. FAILING SUPPLY CO., G. E. April 26, 1951. No. 9794/51. Class 78 (v). In a combined travelling block and swivel connector for use in the tackle of a rotarv well drilling rig, the body comprises an upper part 3 of substantially semi-cylindrical shape and a lower portion 4 which converges downwardly from the upper part and is formed with a cylindrical socket 5 to receive the swivel 43. Apertures 6 in the block are closed by plates 15 which are held in place by screws 17 and formed with central bosses 23 to receive the ends of the shaft 26 carrying the sheaves 11, 12, 13. The block is provided also with partitions 9, 10 in which are circular openings 7, 8 similar to and coaxial with the apertures 6. Spacing plates 27, 28 are mounted in the openings 7, 8. A vertical member 57 having flat sides is suspended from a pin 38 mounted in the block. A cup-member 62 is mounted slidably on the member 57 and forms a seating for a spring 83. A thrust bearing 73 is placed between the cup member and swivel. A reduced extension of the member 57 has a spring seat 77 mounted rotatably on it. The member 62 has a skirt 67 which terminates in a flange 69 formed with notches 70. Any one of these notches can be engaged by a bolt 87 mounted in the swivel to lock the latter in any position.
Patent GB-424536-A (GB)
Title: Manufacture of synthetic resins
IPC: C08G12/08
Filed: 1934-03-29
Abstract: Synthetic resins are manufactured by reacting a drying oil, e.g. china wood-oil, linseed oil, hemp oil or perilla oil, or a derivative thereof such as can be made by alcoholysis, aeration or boiling, with a binuclear or poly-nuclear aromatic amine base whose nuclei are connected directly or indirectly by one or more methylene groups, with or without the use of a condensing agent or a solvent or both, and, if desired, treating the product with an aldehyde or an agent yielding aldehyde.  The process may start from a previously formed methylene base which is condensed with the drying oil, or the methylene base may be formed in the course of the process, e.g. by condensing the drying oil with an aromatic amine whose amino-residue can then be connected in known manner with further aromatic amines by means of methylene groups.  The reaction may advantageously be carried out by a method analogous to that of Specification 414,404, by reacting amine bases containing active methylene groups, e.g. anhydroformaldehyde-aniline or anhydro-p-aminobenzyl alcohol, with an aromatic amine-drying oil condensation product instead of with a true primary aromatic amine.  The proportion of the oil component to the amine component may be varied within wide limits. The products may be mixed with lacquer bases and plasticizers and may be dried in the presence of siccatives to yield films which may be hardened by heat treatment.  When mixed with filling agents they may be moulded by heat and pressure, and they may also be employed for coating or impregnating paper or fabric sheets and as binding agents for making laminated products.  In examples: (1) china wood oil, aniline and aniline hydrochloride are refluxed together and the product is treated with anhydroformaldehyde-aniline; the product is dissolved in alcohol-benzene and run into aqueous formaldehyde; (2) a solution of china-wood oil and diaminodiphenylmethane in methylcyclohexanone is boiled with the addition of phosphorus trichloride, then heated with anhydroformaldehyde-aniline in the presence of glacial acetic acid, and the product is reacted with formaldehyde as in (1); (3) linseed oil and aniline are refluxed in the presence of phosphorus trichloride, then heated with anhydroformaldehyde-aniline in the presence of phthalic acid, and the product is reacted with formaldehyde as in (1); (4) the ethyl ester of china wood oil acids (obtained by alcoholysis of china wood oil) is boiled with aniline in the presence of phosphoric acid, then heated with anhydroformaldehyde-aniline and finally with paraformaldehyde; (5) the product obtained as in (1) from china wood oil, aniline and anhydroformaldehyde-aniline is dissolved in benzene and the solution is mixed with furfural and preferably refluxed.
Patent GB-464231-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03F3/32
Filed: 1936-04-03
Abstract: 464,231. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. April 3, 1936, No. 9886. Convention date, May 1, 1935. [Class 40 (v)] In a valve amplifier for use in signalling and sound-reproducing systems, a part of the output circuit is designed to produce evenharmonic voltages which inter-modulate with the fundamental and the odd-harmonic voltages in such a way as to increase the output of fundamental and decrease that of the odd harmonics ; or alternatively to increase the odd harmonic output. When the amplifier is of the push-pull type the even harmonics appear across an impedance in the common portion of the plate circuits. When only a single carrier frequency or a narrow band is involved, a single amplifier may have a secondharmonic acceptor circuit connected across its plate and cathode. As shown in Fig. 2, a resistance R5, R6 is connected between the cathode and the mid-point of the output transformer 15 of a push-pull amplifier pair 10, 11. The bias voltage arising across R5 and R6 is applied to the grids through a resistance R2 and a smoothing-condenser C11. The part-resistance R5 is shunted by a large condenser C12. The Specification shows that as the un-shunted resistance R6 is varied, a point can be found with large output of fundamental, and a minimum of third harmonic. If the condenser C11 is removed the resistance R6 provides negative feed-back of the second harmonic and the Specification indicates that this gives minimum third-harmonic with a lower. value of the resistance R6, accompanied by an increase in power output. By providing a phase-reversing transformer coupling between the terminals of the resistance R6 and the grid circuit of the valves, the resistance R6 may be made effectively negative i.e. the feed-back becomes positive, and the output of fundamental is further increased, Fig. 6 (not shown). The plate voltage may be supplied from an alternating source through a rectifier, and the resistance R5 and condenser C12 may form part of the smoothing circuit, Figs. 1 and 4 (not shown). When a single frequency or a narrow band is to be amplified, the output circuit of a single valve 34, Fig. 5, may include a shunt 38, 39, 40 tuned to accept the second harmonic and with all the elements variable.
Patent GB-528574-A (GB)
Title: Improvements in production of dyes of the cyanine type and to improved photographic emulsions
IPC: C09B23/06
Filed: 1939-03-30
Abstract: 528,574. Sensitized photographic emulsions. KODAK, Ltd. (Eastman Kodak Co.). March 30, 1939, No. 9896. Drawings to Specification. [Class 98 (ii)] [Also in Group IV] Dyes of the cyanine type are made by condensing phthalic anhydride or succinic anhydride with a cyclammonium salt containing a reactive alkyl group, and a nuclear oxygen, sulphur or selenium atom. The condensation is effected in the presence of pyridine, with or without triethylamine. The products may be incorporated in photographic silver halide emulsions to act as light filters or sensitizers. In examples, dyes are made from (1) phthalic anhydride and (a) 2-methylbenzthiazole methiodide or ethiodide (b) 2-methyl-#-naphthathiazole etho - p - toluenesulphonate, (c) 2 - methylthiazoline ethiodide, (d) 2-methylbenzselenazole ethiodide and (e) 2-methylbenzoxazole ethiodide, and (2) from succinic anhydride and 2-methylbenzthiazole ethiodide. The products contain a carboxyphenyl or carboxyethyl group attached to the middle carbon atom of the methine chain. The carboxy groups may be esterified; examples are given of the esterification of some of the products with methyl and ethyl alcohols. Spectrograms of some of the dyes in gelatino-silver bromide or chloride emulsions are given.
Patent GB-225768-A (GB)
Title: Improvements in cloth plaiting and folding machines
IPC: B65H45/101
Filed: 1924-04-22
Abstract: 225,768. Lightbown, W., and Hacking & Co., Ltd. April 22, 1924. Interconnecting guard with starting-gear.-A guard a for use on a cloth plaiting or folding machine of the kind in which a reciprocating knife lays the fabric in folds on a table extends across the machine to enclose the portion of the machine adjacent the grip rails and is controlled bv the starting and stopping mechanism so that the guard must be placed in guarding position before the machine can be started, but is released when the machine is stopped. The guard of wire mesh &c. is mounted on a shaft c carrving an eccentric controlling a rod k the lower end of which has a boss n. When the guard is raised into inoperative position, the boss blocks an arm o on the starting handle. When the guard is lowered, the arm o is free to engage one end of a weighted lever t the other end of which is adapted to secure the end of a strengthening-rod f on the guard.
Patent GB-1122512-A (GB)
Title: An improved plastics rivet
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16B19/10
Filed: 1966-03-07
Abstract: 1,122,512. Stud and socket fastenings. F. T. PRODUCTS Ltd. 7 March, 1967 [7 March, 1966], No. 9917/66. Heading E2B. [Also in Division F2] A rivet comprises a head 12 having a bore 18 a shank 11 having a bore 17 and a pin 13 joined to the head by an easily breakable web of material. The pin is formed with a flange 20 and a collar 21 so that when the pin is struck down into the bore 17, the flange is spaced from the head 12. The bore 17 is tapered so that the pin expands the tongues 14, 15 of the shank to wedge the rivet in an aperture. The rivet is made from resilient synthetic plastics material, preferably by injection moulding, and the tongues have external grooves 16. The rivet may be removed from the aperture and re-used by levering the flange 20 upwards to remove the pin from the shank and then levering the head 12 upwards.
Patent GB-105296-A (GB)
Title: Improvements in and connected with the Grinding Surfaces of Grinding and Cutting Wheels and analogous Contrivances.
Inventor: JENKINS WALTER WILTSHIRE
IPC: B24D3/34
Filed: 1916-07-14
Abstract: 105,296. Jenkins, W. W. July 14, 1916. Abrading and sharpening compositions.-A mixture of carborundum and steel " crystals " or ' grits ' is bound together by shellac or the like to make grinding-wheels &c. Steel crystals or grits are angular shaped fragments of a specially hard steel, such as diamond steel, the grits being of a finer grade than the crystals. According to the Provisional Specification, emery and sand may also be added.
Patent GB-1422416-A (GB)
Title: Floating storage unit
IPC: E21B43/01
Filed: 1973-03-01
Abstract: 1422416 Floating storage tanks SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 1 March 1973 9932/73 Headings B7A and B7S A floating storage unit 4 of the displacement type comprises a liquid storage vessel 5 and a riser conduit 42 which is axially displaceable along a riser guide track 65 extending axially through the storage unit. A hose 40 is secured to the lower end of the riser conduit and hose connector 67 secured to the hose is displaceable along hose connector guide track 66 also extending axially through the storage unit. Two riser conduits 42, 43 are shown in the embodiment of Fig. 1.
Patent HK-103493-A (HK)
Title: Novel fatty acid-lactic acid ester
Inventor: SUZUE SHIGETOSHI
IPC: C09K23/00
Filed: 1993-09-30
Abstract: Lactic acid esters of an  alpha -branched fatty acid possessing an excellent hair conditioning effect are disclosed. Typical example is sodium 2-heptylundecanoyl acid lactate prepared by the reaction of 2-heptylundecanoic acid and lactic acid in the presence of an alkali such as sodium hydroxide. This compound gives a shampoo composition in conjunction with an anionic surface active agent, and a hair rinse composition when a quaternary ammonium salt is formulated. The compositions have excellent conditioning effects on use such as good slipperiness and hair curling formation or retention performance.