baber/WOPTO huggingface dataset:
Patent GB-801125-A (GB)
Title: Process for the production of ammonium salts of aromatic carboxylic acids
Inventor: GASSON EDWARD JAMES
IPC: C07C51/41
Filed: 1955-09-27
Abstract: Polyethylene terephthalate is prepared by heating ammonium terephthalate (see Group IV (b)) with an excess of ethylene glycol, if desired in the presence of a catalyst such as magnesium, sodium terephthalate, litharge or zinc borate.  In an example, ammonium terephthalate was heated with ethylene glycol, magnesium oxide and sodium methoxide under reflux in an atmosphere of nitrogen until all the ammonia was evolved, the excess of glycol was distilled off and heating was continued, finally under reduced pressure to give polyethylene terephthalate.ALSO:Ammonium salts of aromatic carboxylic acids are prepared by contacting an aromatic nitrile and/or imide with water at a temperature of at least 100 DEG  C.  The hydrolysis may be carried out using an excess over the theoretical requirement of water, or an aqueous solution of the ammonium salt of the aromatic carboxylic acid may be used.  An alkaline catalyst such as ammonia, magnesia, sodium hydroxide or calcium carbonate is preferably employed.  The reaction is preferably carried out at temperatures between about 150-220 DEG  C. and under superatmospheric pressure in a closed system.  The ammonium salt may be recovered from the product, which may contain some amides, in known manner, or the product may be converted to the acid by the process of Specification 801,126.  Specified nitriles and imides are benzonitrile, terephthalonitrile, isophthalonitrile, phthalonitrile, tolunitriles, naphthonitriles and phthalimide. Diammonium terephthalate and isophthalate are the preferred products.  Diammonium terephthalate may be converted to polyethylene terephthalate (see Group IV (a)). In examples: (1) terephthalonitrile was heated in an autoclave to various temperatures above 100 DEG  C. with water and generally with ammonia, magnesium oxide or sodium hydroxide as catalyst to yield ammonium terephthalate together with various amounts of intermediates, i.e. terephthalamide, ammonium terephthalamate and p-cyanobenzamide; (2) isophthalonitrile was heated with water and ammonia to give diammonium isophthalate; (3) as in (2) benzonitrile gave ammonium benzoate and some benzamide which was recycled; (4) crude phthalimide containing 86 per cent of phthalimide and 14 per cent of phthalonitrile was heated with water and ammonia to give ammonium phthalate containing some ammonium phthalamate. Specification 796,765 is referred to.
Patent GB-713775-A (GB)
Title: Heat-exchanger tubes
Inventor: BELL FRANCIS ROBERT
IPC: B21D53/04
Filed: 1951-11-23
Abstract: 713,775. Heat-exchange elements. ROVER CO., Ltd. Oct. 23, 1952 [Nov. 23, 1951], No. 27504/51. Class 64(3) [Also in Group XXII] A corrugated heat-exchanger tube is made by joining two superimposed, thin, flat, metal strips a near their edges, e.g. as by electric welding or copper-brazing along the dotted line shown in Fig. 2, then by corrugating the combined strips in crimping rolls and separating the unjoined parts by fluid pressure, Fig. 4. Liquid under pressure is admitted by way of the gap left in the joining seam at one end of the strips. The united ends are severed and the tube thus formed is attached to a frame carrying an assembly of superimposed tubes arranged with crests b contiguous to form passages for the flow of hot gases transversely between the tubes while air flows through the tubes. The Provisional Specification describes also open necks formed on the ends of the tubes by flattening some corrugations and removing surplus corner portions.
Patent GB-682162-A (GB)
Title: Improvements in or relating to storage cabinets for gramophone records
IPC: A47B81/06
Filed: 1948-10-23
Abstract: 682,162. Storing and delivering gramophone records. STEVENSON, H. G. R. Nov. 19, 1949 [Oct. 23, 1948], No. 27586/48. Class 18 A gramophone record cabinet provided with one or more storage racks has record selecting means comprising a pivoted ejecting finger associated with each rack and movable therealong by a flexible connection from a manually operable selecting wheel, drum or ribbon bearing symbols corresponding to the record compartments of each rack, the arm being swung into the selected compartment by a push button to partially eject the record and present it for manual withdrawal Fig. 2 shows selecting means comprising a numbered drum E and an associated dialling wheel c located between two vertically disposed tracks having superposed wire trays or supports a, a' for the records, the drum E having secured thereto two cables M, M<SP>1</SP>, Fig. 3, which are connected to opposite ends of a slide L that is movable longitudinally within a slotted tube J mounted so that it can be swung circumferentially. The slide L has a lug extending through the tube slot and bearing a carriage O on which are pivoted, independently, record ejecting arms P, P<SP>1</SP> for the respective racks. each arm having a rubber faced record engaging finger Q or Q<SP>1</SP> and a round-ended pin T or T<SP>1</SP> for guiding the finger into the selected compartment. The tube J has a forwardly extending lug V embraced by springs K, K<SP>1</SP>, which hold it in a central position, and has fixed to it two levers W, W<SP>1</SP> which are connected to rods X, X<SP>1</SP> respectively furnished with push buttons F, F<SP>1</SP>. When a selection is to be made the wheel c is rotated to bring the appropriate number on drum E opposite a window d, Fig. 3, and consequently to move the slide L and carriage O so that the arms P, P<SP>1</SP> are aligned with the appropriate compartments. The button F or F<SP>1</SP> is then pressed, according to the rack in use, whereupon the tube J, slide L and carriage O are swung round towards the selected rack to cause the appropriate finger to enter the selected com partment and eject the record. If the dividing line between the numbers on the drum is in the centre of the window d, the pin T or T<SP>1</SP> will foul the tray strut and prevent a selection being made; otherwise two pins T, T<SP>1</SP> guide the fingers into the appropriate compartment. Each arm P or P<SP>1</SP> is capable of moving forwardly against the action of a light spring under pressure by the back S of the cabinet, when the other arm is being swung towards the rack. As an alternative to the slide L and tube J the carriage O may be mounted on a sleeve that is slidable on a rod and when a symbol bearing ribbon is employed it may also act as a belt transmitting movement to the ejecting arms. The cabinet may have compartments'for a gramophone, contain accessories and lists of titles of the stored records.
Patent GB-818673-A (GB)
Title: Improvements in figurants
IPC: A63H3/14
Filed: 1955-09-29
Abstract: 818,673. Making puppets, dolls, toy animals &c. SAINTOUT, J. Sept. 29, 1955 [Sept. 30, 1954; June 17, 1955], No. 27734/55. Class 87(2). [Also in Groups XV and XX] A figurant may be in the form of a puppet, doll, toy animal, or marionette, (see Group XV) and may be made of sponge rubber obtained from latex. As shown, the front and rear parts are formed separately, a framework 33 being included when moulding the rear part between moulds A, B, and studs 2, 3, 18, 19, 23 being positioned before moulding the front part by means of moulds C. D. Spheres 35 for forming the eye sockets are urged by springs 35 against the mould D.
Patent GB-373519-A (GB)
Title: Improvements in or relating to shock absorbers
IPC: F16F9/26
Filed: 1931-10-06
Abstract: 373,519. Hydraulic shock-absorbers. DELCO PRODUCTS CORPORATION, 329, East 1st Street, Dayton, Ohio, U.S.A.- (Assignees of Kindl, C. H. and Funston, F. D. ; 329, East 1st Street, Dayton, Ohio, U.S.A.) Oct. 6, 1931, No. 27742. Convention date, March 14. [Class 108 (iii).] In an hydraulic shock-absorber having two compression chambers connected by pressure release valves an additional valve operated by an inertia weight controls the flow of fluid between the chambers in accordance with the vertical movements of the shock-absorber as a whole and independently of the pressure in the compression chambers. The apparatus, shown diagrammatically in Fig. 2, and in fuller detail in the large views Figs. 3 and 6, is mounted on the frame of a vehicle and the end of the operating arm 34 is connected by a link (not shown) to the axle. The piston 27 is reciprocated by the depending lever 31 and the compression chambers 40, 41 are connected to one another by conduits 43, 44 with spring- controlled release valves 49, 51. Connections 83, 84 to the conduits 43, 44 lead to a valve 70, 71 slidable vertically in a cylinder 63, the valve being movable with a heavy weight 68 which is supported by a spring 66 so that it does not follow the vertical movements of the body of the shock-absorber and the frame of the vehicle. The end of the lever 31 engages between wear pieces 32, 33 held against the springs by stiff springs 57a. The compression chambers are replenished automatically from the central reservoir 26 through passages 59 in the wear pieces and one-way valves 56 held up by light springs 57. When the automatic control valve 70, 71 is in the central position shown in Fig. 3, a circular groove 69 therein overlaps circular grooves 72, 73 formed in the cylinder 63 in which the valve works. When the valve moves downwardly vertically in its cylinder, the groove 69 no longer overlaps the upper groove 72 so that fluid cannot flow from the passage 84 to the passage 83. Flow in the reverse direction may, however, take place through the passage 82, the groove 73, the groove 69, and the one-way valve 86. When the valve 70, 71 moves upwards relatively to its cylinder, the flow between the passages 83, 84 is controlled similarly but in the reverse direction. The ball valves 75, 86 operate at a lower pressure than the release valves 49, 51.
Patent GB-1237461-A (GB)
Title: Improvements in and relating to lever lock valves
Inventor: SMITH JOHN
IPC: F16K1/24
Filed: 1968-06-11
Abstract: 1,237,461. Valves. TRENT VALVE CO. Ltd. 9 June, 1969 [11 June, 1968], No. 27746/68. Heading F2V. In a butterfly valve wherein prior to being seated or fully opened the closure member is moved to a position spaced from the seat, with the plane of the closure member in such position being transverse to the valve axis, operation of the closure member is achieved by means of a spindle 4 which is both rotatable about, and longitudinally movable with respect to its own axis, the spindle being connected, by means of a pin, to a pair of constrained cam members 8 which are interconnected by a lever (9, Fig. 1, not shown). Upon rotating the lever through 180 degrees in a plane containing the spindle axis, the spindle is moved downwardly, as seen in the drawing, with the result that the closure member is move axially off its seat, such movement being caused by two cam members 12 secured one on each side of the spindle 4, riding in two slots 15 formed one in each of a pair of spaced plates 14 secured to the closure member. When in its lowermost position, the spindle may then be rotated by the lever to fully open the valve. The lever is guided in the housing 10 such that it can be rotated in a plane transverse to the axis of the spindle only when the latter is in its lowermost position.
Patent GB-219851-A (GB)
Title: Improvements in apparatus for burning liquid fuel
IPC: F23D11/44
Filed: 1923-11-05
Abstract: 219,851. Delaney, M. G. Nov. 5, 1923. Vaporizing-apparatus; perforated-tube burners; liquid-fuel supply.-A liquid-fuel burning apraratus comprises a perforated-tube burner 12 supplied with a mixture of superheated steam and oil vapour by a coiled tube 11 which is connected to a superheating chamber 9 on a water boiler 6 and to which oil is admitted through a pipe 13, all these parts being arranged in a " supermixing " casing 1. The boiler 6 is supported centrally in the casing by a cradle 7 and is initially heated by liquid fuel burnt in a pan 15. The gases discharged from the burner 12 are mixed and partially burnt with air issuing from nozzles 5 on pipes 4 in the casing, complete combustion taking place on the gases issuing from slits or other orifices 2 at the top and sides of the casing. The oil and water are supplied to the burner through cisterns 19, 21 the levels in which are regulated by float valves so as to maintain the desired levels in the apparatus without head pressure. Overflow in the event of flame extinction is thereby prevented. The oil-supply pipe 13 is fitted with a, regulating valve 23 and a check valve 26 and the water-supply pipe 8 with a check valve 27. The admission of gas to the burner is regulated by a valve 24 operated by a lever 25. The gas supply to part of the burner may be shut off when a small flame is desired by means of a valve operated by a lever 29.
Patent GB-318972-A (GB)
Title: Improvements in or relating to shedding mechanism for jacquard looms
IPC: D03C3/20
Filed: 1929-09-13
Abstract: 318,972. Haebler, G. Sept. 13, 1928, [Convention date]. Jacquards; pattern surfaces and the Like.-In jacquard-operating mechanism a current controlled by a light-sensitive cell b, Fig. 1, affected by light points on a pattern a arranged on a drum is amplified at g and operates a relay c for energizing an electromagnet d for controlling at each pick, each individual cord e, the circuit through the relay being completed by a slider f moving with the cell b. The cell may travel axially of the drum as shown, or the drum may be rotated for each pick. After each pick, the relays and magnets are returned to normal position through a circuit breaker i. Instead of using a pattern having light and dark points, to operate the jacquard, such pattern a, Fig. 3, may act in conjunction with a light-sensitive cell b and an amplifier g to cause a travelling steel band l to be magnetized by electromagnets k in parts corresponding to the points of the pattern, the band then being passed in proximity to magnet systems in which currents are induced. The induced currents are amplified and, through relays and electromagnets, control the heald cords.
Patent GB-1555163-A (GB)
Title: Cationic hydrazone dyestuffs
IPC: C09B26/02
Filed: 1977-07-04
Abstract: Hydrazone dyes of the general formula I <IMAGE> where the substituents as defined in Claim 1, are obtained by reacting azo bases of the general formula XI with an alkylating agent. The new products preparable according to the invention are useful dyes, which can be used for example for dyeing and printing materials made of leather, mordanted cotton, cellulose, synthetic superpolyamides and superpolyurethanes, and also for dyeing lignin-containing fibres such as coir, jute and sisal. They are also suitable for preparing writing fluids, stamp colours and ballpoint pen pastes and can also be used in flexographic printing. <IMAGE>
Patent GB-468777-A (GB)
Title: Apparatus for landing of land and sea aircraft
IPC: B63B35/52
Filed: 1935-10-09
Abstract: 468,777. Landing - places for aircraft. WEICHARDT, R. Oct. 9, 1935, No. 27880. Void. Convention date, April 27. [Class 4] An alighting-deck a, Fig. 1, adapted to be towed behind an aircraft carrier or other vessel is made buoyant and may be left floating attached to a buoy in emergency. The deck a is shown in Fig. 1 with one end carried over the deck b of an aircraft carrier and in Fig. 3 is shown towed by a vessel with a cruiser stern. Catch ropes d are fitted and a friction-producing deck covering may be employed such as slack in asphalt, or cocoa matting.
Patent GB-355974-A (GB)
Title: Matrix magazine for matrix composing and type line casting machines
IPC: B41B11/06
Filed: 1930-09-18
Abstract: 355,974. Type-bar-makingmachines. INTERTYPE CORPORATION, 1440, Broadway, 40th Street, New York, U.S.A. Sept. 18, 1930, No. 27919. Convention date, Jan. 25. [Class 100 (iii).] Magazines. -In order to reduce the weight of the magazine, the body portions, such as the bottom and cover plate b, a, are made of light material such as aluminium or the material c o m merciallv known as " fibre," which consists of canvas impregnated with a condensation product of phenol and formaldehyde. The ends are preferably reinforced with another material, such as brass. The plates a, b are formed with bevelled edges e, f to interlock with bevels on the brass terminal plates p. Crossbars g are provided on the underside of the magazine.
Patent GB-616898-A (GB)
Title: Improvements in or relating to the production of "flashless" propellent powders
IPC: C06B25/26
Filed: 1946-09-18
Abstract: 616,898. Flashless propellants. GORDON, S., WHITWORTH, E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 18, 1946, No. 27954. [Class 9 (ii)] A flashless propellant of 570Œ150 cals. per gram calorific value comprises colloidable nitrocellulose in colloided form, one or more self-explosive nitric esters, nitroguanidine, one or more organic basic stabilizers and one or more neutral non-explosive gelatinizers wherein the ratio of colloidable nitrocellulose to the nitric ester or esters lies between 1.3 to 1 and 2.8 to 1 and wherein the proportions of these ingredients are: one or more self-explosive nitric esters such as nitroglycerine and colloidable nitrocellulose 33Œ5 per cent; nitroguanidine 56Œ8 per cent; one or more organic basic stabilizers such as diethyl diphenyl urea, dimethyl diphenyl urea, ethyl phenyl urethane, diphenyl urethane, phenyl benzyl urethane or mixtures thereof and one or more neutral non- explosive gelatinizers, for example dialkyl esters of dibasic organic acids, such as dibutyl phthalate, diamyl phthalate, dibutyl tartrate or diamyl tartrate, or ethers such as dibenzyl ether, or mixtures thereof 11Œ3 per cent. Additional ingredients such as potassium salts or calcium carbonate may be added. Specification 584,907, [Group IV], is referred to.
Patent GB-189619-A (GB)
Title: Improvements in combination table utensils
IPC: A47G21/04
Filed: 1921-10-21
Abstract: 189,619. Abram, E. W. Oct. 21, 1921. Addition to 171,954. Spoons. - A combination tableutensil comprises a spoon divided longitudinally into two equal parts adapted to be detachably engaged, for example, by holes and pins j, a spoon bowl c, e being formed on the end of each of the handle' portions d, f, so that the spoon bowls fit face to face when the two parts are fitted together. One half-spoon may be hinged at g so that the two bowls c, e may be used as sugar tongs, a sleeve h being provided to cover the hinge when out of use. One of the spoon bowls may be perforated to act as a sugar sifter.
Patent GB-742560-A (GB)
Title: Improvements relating to automatic control arrangements for tuning radio and radar receivers
IPC: H03J7/04
Filed: 1953-10-12
Abstract: 742,560. Automatic frequency control systems. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Oct. 12, 1953 [Oct. 10, 1952], No. 28042/53. Class 38 (4). The tuning of the local oscillator, e.g. klystron tube, of a radio or radar receiver, is automatically controlled with rapid response by a frequency discriminator whose output is applied between the grid and cathode of a balanced amplifier R3, R4 the voltages of opposite sign across which are connected through separate rectifiers V5, V6 and integrating circuits R5, C1 and R6, C2 to the grids of a differential double amplifier valve V7 with coupled cathodes, the rectifiers V5, V6 being similarly poled so that only one at a time passes a frequency deviation signal to the output valve V7. The control signal, which may act on the reflector electrode of the klystron tube, is derived across one or other of the anode resistors R7, R8 of the valve V7.
Patent GB-406786-A (GB)
Title: Improvements relating to curtain suspension devices
IPC: A47H15/02
Filed: 1932-10-08
Abstract: 406,786. Suspending curtains. CLAY, A., and WICKER, J. C., 21, St. Paul's Square, Birmingham. Oct. 8, 1932, No. 28059. [Class 52 (v).] In a curtain suspension device a dust shield is attached by means of a clip to the supporting means 5 for the rail or track 6 which carries the curtain runners 11. The clip is stamped from sheet metal and has a bent over portion 7<c> which grips the horizontal flange of the dust shield against the body portion 7<a> of the clip. The suspension means 5 and the clip are secured together and to the wall 10 by a screw 9. The vertical depending portion 8 of the shield tends to'protect the runners 11 from accumulating dust.
Patent GB-835868-A (GB)
Title: Improvements in or relating to the welding and fabrication of vessels
Inventor: BUTLER HENRY CHARLES
IPC: B23K5/00
Filed: 1958-09-01
Abstract: 835,868. Welding by fusion. INTERNATIONAL COMBUSTION (HOLDINGS) Ltd. Sept. 1, 1958, No. 28079/58. Class 83 (4). A branch member 1 is secured in an aperture in a wall 2 of a vessel by forming bevels 5 on both edges of the aperture, forming circumferential grooves 10 in the branch member 1 spaced apart a distance equal to the separation of the inner edges 6 of the bevels 5, inserting the branch member 1 in the aperture so that the bevels 5 and grooves 10 form two continuous troughs and building up a weld in each of the troughs.
Patent GB-1307583-A (GB)
Title: Electrically conductive wire
IPC: H01B7/29
Filed: 1970-06-10
Abstract: 1307583 Insulating wires WESTERN ELECTRIC CO Inc 10 June 1970 [16 June 1969] 28088/70 Heading C3P An electric wire is insulated by applying PVC and a cross-linking medium of which at least 75% is  and then cross-linking by irradiation. Other cross-linking agents, e.g. triallyl phosphate, may be present. There may also be included small amounts (up to 20 phr.) of a plasticizer, e.g. dioctyl phthalate or butyl methacrylate, a filler, e.g. calcium carbonate or silica, stabilizer, e.g. dibasic lead phthalate, lubricant, e.g. lead stearate, and antimony oxide as fire-retardant. Electron beams or gamma radiation are used for curing.
Patent GB-173608-A (GB)
Title: A new or improved magazine for gramophone and the like needles
IPC: G11B3/54
Filed: 1920-10-04
Abstract: 173,608. West, C. Oct. 4, 1920. Contents, delivering.-A magazine for gramophone and like needles comprises a flat vertical casing a in which the needles are held one above the other and fall by gravity in front of a plunger m by which they are ejected one by one through a nozzle n, which may be lined with rubber. The casing has a hinged lid c which is retained in its closed position by an L-shaped bracket, the arm e of which engages guide brackets g, h on the lid and casing respectively. The other arm f of the bucket is attached to the gramophone case. The plunger may be presesd outwards by a spring k. The casing may be arranged horizontally, in which case a spring is used to press the needles forward in front of the plunger. The nozzle n is of such a length that the inner end of the ejected needle is held therein.