baber/WOPTO huggingface dataset:
Patent GB-872505-A (GB)
Title: Improvements in the production of aromatic polymers
IPC: C08F12/08
Filed: 1960-05-04
Abstract: A process for the production of aromatic polymers comprises polymerizing styrene and/or dinvinyl benzene in the presence of titanium dichloride as catalyst and in the absence of catalysts containing other metals.  Polymerization may be effected in the presence of inert reaction media, e.g. pentane, hexane, benzene, toluene, ethylbenzene and cyclohexane.  The styrene and divinylbenzene reaction masses may be dissolved in methyl ethyl ketone and p-xylene respectively and the polymers precipitated with methanol and acetone.
Patent GB-614943-A (GB)
Title: Improvements in or relating to the manufacture of electrical dry-contact rectifiers
IPC: H01L21/14
Filed: 1946-05-24
Abstract: 614,943. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd. May 24, 1946, No. 15823. Convention date, May 28, 1945. [Class 37] A rectifier element is maintained in a horizontal position during the electroforming process so as to enable a higher voltage and current to be used without allowing the melted counter-electrode material to run off. The voltage may be brought up to approximately 30 volts in half to one minute, the forming time at this voltage being three to four minutes.
Patent GB-1084566-A (GB)
Title: Transductor sensing device for the measurement of direct current and indication of the polarity thereof
Inventor: BADAL JIRI
IPC: G01R19/20
Filed: 1965-04-14
Abstract: 1,084,566. Circuits employing controlled non- linear inductors. ZAVODY PRUMYSLOVE AUTOMATISACE, NARODNI PODNIK. April 14, 1965, No. 15955/65. Heading H3B. [Also in Division G1] In a transductor sensing device for measuring a direct current in a bus-bar 1c and indicating the polarity of the measured current, the voltages appearing across the gate windings 1d, 1e of a measuring transductor 1 are connected through rectifier bridges 4, 5 to a summing transformer 6, the output of which passes through a pulse squaring amplifier 7 to a phase discriminator 2. The phase discriminator also receives an input from an instrument current transformer 3 connected in series with the gate windings and an A.C. source of 50 c/s.
Patent GB-476431-A (GB)
Title: Manufacture of artificial threads
IPC: D06M13/487
Filed: 1936-06-08
Abstract: Artificial fibres containing nitrogen and sulphur and capable of being dyed with wool dyestuffs, are prepared by spinning a solution of viscose and treating the spun fibres, while they still contain free xanthate groups, with ethylene imine, or homologue thereof, or other analogous cyclic nitrogen base.  The imine may be used as a free base or as a salt, and either in vapour, liquid, or dissolved condition, and may be used in sufficient quantity or not to react with all the free xanthate groups in the filaments. Any xanthate groups which still remain may be split off by treatment in an acid bath.  The spinning baths used for the viscose may contain up to 100 per cent of sulphuric acid, and in the case of the stronger baths the retention of the necessary number of xanthate groups is obtained by shortening the length of the bath, by inserting a washing bath, or by avoiding long stretches in air before treatment with the cyclic base. The following examples are given: (1) normal viscose is spun into a saturated solution of sodium sulphate containing 4,2 per cent of sulphuric acid, washed in sodium sulphate solution, and passed through ethylene-imine vapour; (2) viscose containing 50 xanthate groups per 100 cellulose molecules is spun into ammonium sulphate solution and the threads passed through a solution of N-methylethylene-imine; (3) viscose having 45 xanthate groups per 100 of cellulose is spun as in (2) and the threads are passed through a gutter into which flow aqueous acetic acid and aqueous ethylene-imine.  After heating for 10 secs. at 75 DEG  C., the threads are passed into aqueous sulphuric acid to eliminate residual xanthate groups; (4) viscose containing 55 xanthate groups per 100 of cellulose is spun into a bath containing sodium sulphate and sulphuric acid and the threads are washed and passed through aqueous ethylene-imine; (5) viscose containing 35 xanthate groups per 100 of cellulose is spun into a bath containing sulphuric acid and ammonium sulphate and the threads are led into aqueous ethylene-imine; (6) fresh viscose containing 60 xanthate groups per 100 of cellulose is spun into a bath containing sodium sulphate, sulphuric acid, and the condensation product from formaldehyde and naphthalene sulphuric acid.  The threads are passed through aqueous sodium sulphate solution and led into a solution containing ethylene-imine and acetic acid; (7) a viscose containing 54 xanthate groups per 100 of cellulose is spun into a bath made by esterifying sulphuric acid with methanol.  The thread is passed through water and then into a solution of ethyleneimine semi-neutralized with acetic acid; (8) the same viscose as in (7) is spun into 74 per cent sulphuric acid and the threads are passed through water, air, and then ethylene-imine as in (7); (9) the same viscose as in (7) and (8) is spun into a bath containing sulphuric acid, ammonium sulphate, and sodium sulphate, and the threads are passed through water, air, and ethylene-imine as in (7) and (8).
Patent GB-1171084-A (GB)
Title: Improvements in or relating to Defrosting of Cooling Systems.
IPC: F25D21/02
Filed: 1968-04-03
Abstract: 1,171,084. Defrosting. CONTROLS CO. OF AMERICA. 3 April, 1968 [21 April, 1967], No. 16007/68. Heading F4H. [Also in Division H1] In a cooling system in which a centrifugal fan 20 draws air over a refrigerant evaporator 16, defrosting of the evaporator by a heater 32 is initiated in response to an increase in speed of the fan motor 28 resulting from a reduction of the load on the fan by ice formation on the evaporator. During a cooling cycle, a contact 41 of a toggle switch 35 and a fixed contact 44 are in contact so that the fan motor 28 and the refrigerant compressor 10 are energized. When the motor speed increases to a given value, a weight 108 which is pivoted at 118 on a disc 106 rotated by the motor moves outwardly against a spring 120 and strikes a member 130 of the toggle switch so that the contacts 41 and 44 are broken and the contact 41 engages a further fixed contact 56. The fan motor and compressor are thus de-energized and the defrost heater 32 is energized. When the temperature in the region of the evaporator has risen to a given level, the arm 46 of a thermal switch 40 moves to engage a contact 84, thereby energizing a reset heater 92 to heat a bimetal strip 88. The strip 88 flexes and moves a rod 90 downwardly on to the member 130 of the toggle switch to reset the latter and thereby re-establish the cooling cycle. The air flow from the fan is used to cool a cold room, and a switch 74 is operated by the room door so that when the latter is open, the fan motor is switched off and a room light 84 is energized.
Patent GB-1423388-A (GB)
Title: Heat exchanger with removable tube section
IPC: F22B37/24
Filed: 1973-04-04
Abstract: 1423388 Tubular heat exchangers; steam generators FOSTER WHEELER CORP 4 April 1973 [1 May 1972] 16068/73 Headings F4S and F4A In a shell and tube heat exchanger 10 wherein an inner core 40 comprising a centrally located inlet pipe 48 supplying secondary fluid, e.g. water or liquid sodium, to the lower end of a bundle of tubes 44 extending between annular tube sheets 42 is removably disposed within an outer shell 12 having an outwardly projecting flange 14 at its upper end, an annulus made up of trapezoidal-shaped blocks 60, 70 is provided to prevent upward movement of the inner core due to primary fluid pressure on the upper tube sheet 42 while allowing easy removal of the core from the shell for repair and/or inspection purposes. The inner core is suspended from an annular ring 52 having an outwardly extending flange 54. The outer edge portion of the blocks extend into an annular slot 62 in the flange 14. An omega seal 64 extending between the flanges 14 and 54 prevents escape of primary fluid. A ring 66 bridging the blocks and extending between the flanges 14 and 54 prevents rotation therebetween. When the inner core 40 is to be removed the blocks 60 and 70 are moved inwardly far enough to release them from the annular slot 62; the core can then be moved upwards. A shroud 50 encircles the tubes 44 over most of their length whereby primary fluid, e.g. liquid sodium, entering the shell through inlet 13 flows upwardly over the top of the shroud and then downwardly over the tubes.
Patent GB-181374-A (GB)
Title: Improvements in and relating to electric ignition devices for internal combustion engines
IPC: H01T13/08
Filed: 1921-11-30
Abstract: 181,374. Skywing Aircraft Corporation, (Assignees of Harper, W.). Dec. 1, 1920, [Convention date]. Valves.-In an engine of the type described in Specification 180,681, a sparking-device, mounted in the interior of a rotating-valve 1, comprises fixed terminals 6, 11, the terminal 11 being insulated, for example with mica, at 13 and supported in a plug 14, to which one end of a rod 15 is attached by a clip 20. The free end of the rod 15 engages a spring-pressed block 21 in which the rod can rotate as it turns with the valve.
Patent GB-1383348-A (GB)
Title: Pressure controllers
IPC: G01C19/38
Filed: 1972-04-07
Abstract: 1383348 Gyroscopes SPERRY RAND CORP 7 April 1972 [9 April 1971] 16182/72 Heading G1C [ Also in Division G3] A gyroscopic pressure transducer has a rotor 20 spun by oil from nozzle (40) about a shaft 24 on a cage 26 rotatably supported by fixed and adjustable bearings 28, 30, the cage being connected by torsion rod 60 to a flapper 56  controlling leak-off from nozzles 54 which may be connected to opposite sides of a servomotor 72 controlling the reversing valve 66 of a main servomotor 68. The latter may control a ship's stabilizer fin, with feedback via cam 80 and spring 78. The flapper is adjustable by screw 58, and the forces exerted thereon by fluid from nozzles 54 provide the sole centering bias on the cage 26. Rotor shaft 24 is positioned by screws 36 which also act as limit stops by engaging the sides of grooves 38. The separate pump 82 supplying the transducer may be omitted if pump 62 is usable for this purpose.
Patent GB-221588-A (GB)
Title: Improvements in, or relating to, stoves
IPC: F24C15/00
Filed: 1923-06-22
Abstract: 221,588. Harrison, R. H. June 22, 1923. Fenders; air, moistening.-In a stove fender having a water-container which slides into it in the manner of a drawer, the fender A is in the form of an open-fronted box, the container B sliding through the front opening and resting on a support at the bottom of the fender. An opening c is provided in the top of the fender to expose the surface of the water. The fender shown is provided with receptacles D for refuse such as tobacco ash, the receptacles each having a recess on the inner face which is engaged by a tongue on the fender.
Patent GB-254339-A (GB)
Title: Improvements relating to electric telephones, loud speakers and the like
IPC: H04R13/02
Filed: 1926-06-28
Abstract: 254,339. Jirotka, B. June 29, 1925, [Convention date]. Loud-speakers; ear-pieces and attachments; head sets; magnetic instruments; diaphragms.- Relates to telephones, loud-speakers &c. of the kind adapted to utilize the sound waves from both sides of the diaphragms and provided with hollow electromagnet cores for leading away the sound and consists in the use of angle-shaped magnets between the adjacent poles of which the edge of the diaphragm is gripped. In the construction of loud-speaker shown in Fig. 1, the diaphragm in addition to being gripped at 16 between the adjacent poles of angle magnets 14, 15 is also gripped at 2, 3 between the halves of the casing 1. The hollow magnet cores 4, 5 carry spools 6, 7 wound in opposite directions so that one will strengthen the magnetic field whilst the other one weakens it. The casing 1 may carry horns 12, 13 as shown or the horns may be arranged on the cores 4, 5. Specification 4685/77 is referred to. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also the construction of loud-speaker shown in Fig. 6 (Cancelled) in which a diaphragm 10 is mounted in a two-part sound-box 19 between U-shaped magnets 11, 12 arranged with their like poles together and to which are secured hollow cores 13, 14 provided with spools 15, 16. Horns 17, 18 communicate with the hollow cores. Only one magnet may be employed if so desired or the magnets instead of being U-shaped may be pot-shaped. Various constructions of telephone receivers constructed so as to utilize the sound waves from both sides of the diaphragm are also described. Thus Fig. 1 (Cancelled) shows a micro-telephone in which the sound waves from the rear side of the diaphragm in the ear piece 3 are led through a hollow head band 1 to a second ear piece 2. Fig. 2 (Cancelled) shows an ordinary telephone receiver in which the sound waves from the rear side of the diaphragm are led through hollow tubing to two additional ear pieces 4, 5. In a modified form of this construction only one additional ear piece is provided. The field telephone, Fig. 4 (Cancelled) is stated to be constructed with a single ear piece 7 to which the sound waves from the back of the diaphragm are conveyed by a tube 8. In a further modification, the tubing and additional ear pieces are dispensed with, the casing of the receiver being filled with a suitable material so as to leave a small space behind the diaphragm which is provided with a number of holes so as to allow the sound waves from the back of the diaphragm to escape. The holes may be totally or partly covered with thin material, such as paper, rubber, &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-331061-A (GB)
Title: Improvements relating to window raising and lowering mechanism
IPC: E05F11/38
Filed: 1929-05-27
Abstract: 331,061. Butlers, Ltd., and Reeves, A. May 27, 1929. Sliding vehicle-window opening and closing apparatus.-A window regulator for a sliding window particularly of a motor vehicle of the kind comprising a lifting lever and a self-acting locking device is actuated by a handle j and spring-controlled lever g and is locked by a sliding spring-pressed pawl k on the lever g adapted to engage a fixed quadrant l. The pawl is released by a flat p on a cam n attached to the handle spindle during an initial lost movement of the handle before driving engagement between the stud r on the lever g and the shoulders of the sloti q in the cam n. The lever b has sliding engagement with the window and a fixed slide e and is pivoted to the lever g. 'The pawl k is U-shaped and has a pin and slot engagement with lever g.
Patent GB-162382-A (GB)
IPC: C11C3/12
Abstract: 162,382. Bolton, E. R., and Lush, E. J. Jan. 27, 1920. Hydrogenated fats and oils, catalytic production of.-In the catalytic hydrogenation of fats or oils, mono- or di-glycerides of the fatty acids are added at the start in amount sufficient to neutralize free fatty acids either present in the oil or formed' therein by hydrolysis during the hydrogenation; contamination of the nickel catalyst by nickel soap is thereby avoided and its active life prolonged.
Patent GB-118735-A (GB)
Title: Improvements in the Manufacture and Production of Organic Colouring Matter and of Pigments therefrom.
Inventor: ALLSEBROOK WILLIAM ALLSEBROOK
IPC: C09B59/00
Filed: 1917-11-07
Abstract: 118,735. Allsebrook, W. A. Nov. 7, 1917. Dyes from natural products ; lakes.-A soluble colouring-matter similar to vandyke brown is prepared by grinding powdered waste leather with a warm strong solution of caustic alkali until the product is dry and water-soluble; if the waste leather contains cellulose as impurity, a small amount of an alkaline oxidizing-agent is added to the mass, e.g. sodium hypochlorite or sodium peroxide. Insoluble pigments are obtained by grinding an aqueous solution of the colour with aluminium sulphate solution and a substratum such as silica, washing the product, and dyeing, or by grinding the solution with calcium sulphate.
Patent GB-594179-A (GB)
Title: Improvements in or relating to reapers, binders and like machines
IPC: A01D63/04
Filed: 1945-06-27
Abstract: 594,179. Reaping-machines. Mc- CUTCHEON, P. June 27, 1945, No. 16374. [Class 6 (iii)] A supplemental divider for reaping, binding, or like agricultural machines comprises a dividing board 3 adapted to be secured to and over the point of the ordinary divider, a cutting bar 5 fitted to and extending from the point of said dividing board, and a vertical rotary disc cutter 9 on an axle 8 supported by a pair of brackets 10 secured to the board 3, said cutter co-operating with the cutting edge of the bar 5. The drive for the cutter is taken from the grain wheel (not shown), of the machine by belt and pulleys. The Provisional Specification states the bar 5 may have an upper bevelled surface.
Patent GB-1503600-A (GB)
Title: Conveying of materials
IPC: B65G53/66
Filed: 1975-04-21
Abstract: 1503600 Pneumatic conveying ANGLOALPHA CEMENT Ltd 21 April 1975 16430/75 Heading B8A Particulate material is fed to a pipe-line downstream of a device which generates a pulsatile flow of conveying gas, the pulsations being such that the drag experienced by the material at a set mass flow ratio of material to gas is less than that for a lower value of the ratio.
Patent GB-482558-A (GB)
Title: Improvements in and relating to ferro-nickel alloys
IPC: C21D1/78
Filed: 1937-06-14
Abstract: Ferro-magnetic alloys, particularly those having more than 30 per cent of nickel, are treated to produce stability and low hysteresis by hot or cold working, annealing at a temperature of 600-900 DEG C., preferably 700 DEG  C. for at least one hour, cold working, annealing above the temperature of re-crystallization, between 1000 and 1200 DEG  C., and finally cold working.  The alloy may then be tempered at a temperature below the re-crystallization temperature. Specification 463,030 is referred to.
Patent GB-572152-A (GB)
Title: Improvements in or relating to parachute landing gear
IPC: B64D1/14
Filed: 1943-10-11
Abstract: 572,152. Parachute attachments; collapsable boats. HUTCHINSON, G. R. Oct. 11, 1943, No. 16611. [Classes 4 and 113 (ii)] A car or container for attachment to a parachute has the walls formed of inflatable members, in order to protect the occupant or articles in the container from shocks during descent, and to enable the car to float in the event of its alighting on water. In the construction shown, the sides and base of the car comprise inflatable tubes 2, 4, interconnected by valves 11, and capable of simultaneous inflation by a gas container or generator 12, operated by the static line 14. The tubes are held together by means of straps 5 connected to a ring 7 at the base of the car and passing upwardly over the outside of the tubes and downwardly over the insides, being looped beneath the lowermost of the wall-forming tubes. A shock-absorber 8 may be provided at the base of the car, and hanger straps 9 hanging in cross-looped form in the interior provide a seat for the parachutist, a safety strap 10 being provided for attachment to the latter's harness.
Patent GB-1213326-A (GB)
Title: Bis-oxalic acid diamides and their use as stabilisers
IPC: C08K5/20
Filed: 1968-04-08
Abstract: 1,213,326. Bis-oxalic acid diamides. CIBA Ltd. 8 April, 1968 [11 April, 1967], No. 16810/68. Heading C2C. [Also in Division C3] Novel bis-oxalic acid diamides of the general formula A 1 -NH-CO-CO-NH-B 1 -NHCO-CO-NH-A 1 , where A 1  represents an alkyl, alkenyl, cycloalkyl, aryl or amino group which may optionally contain further substituents, B 1  is an alkylene or arylene group which has no ethylene double bonds and may be interrupted by hetero-atoms, at least one of the groups A 1  and B 1  must contain a benzene ring directly bonded to a -NH-group and the absorption maximum of the compounds is less than 370 mÁ, are prepared either by (a) condensing 1 mole of with 2 moles of A 1 -NH 2  or (b) condensing 1 mole of H 2 N-B 1 -NH 2  with 2 moles of A 1 -NHCOCOY wherein Y is OH, -Cl or -O alkyl. Amongst numerous examples the following compounds are prepared : 1,4-phenylene - bis - (2<SP>1</SP> - ethoxyoxanilide), 1,4 - phenylenebis - (N - morpholinopropyl oxamide), (3,3<SP>1</SP>-dimethoxy-4,4<SP>1</SP>-biphenylene)-bis-(2<SP>11</SP>,4<SP>11</SP>-dimethyl oxanilide), and (2-chloro-5-methyl-1,4-phenylene)-bis-(octyloxamide).
Patent GB-1453996-A (GB)
Title: Power supply and battery charging circuit for mains or battery  operated electronic equipment
IPC: H02J7/00
Filed: 1974-04-18
Abstract: 1453996 Mains/battery supply systems; battery charging circuits SABA SCHWARZWAELDER APPARATE-BAU - ANSTALT AUGUST SCHWER SOEHNE GmbH 18 April 1974 [22 May 1973] 16942/74 Heading H2H A circuit for supplying power to equipment such as a portable television set from a mains supply, an external battery 3 or a built-in battery 17, comprises two change over contact assemblies 14, 15 and a voltage stabilizing circuit so that when the equipment is switched on a stabilized output voltage is supplied to the equipment and when the equipment is switched off an increased stabilized output voltage is supplied to charge the battery 17. When the equipment is switched on contacts a, b of the assemblies 14, 15 are closed and, assuming that a mains plug has not been inserted in a socket 1, contacts 22a, b are closed. A transistor 8, connected to a voltage divider 9, 10 and a zener diode 12, controls a transistor 7 which provides the equipment with a stabilized voltage derived from the battery 3 or 17. Alternatively, when the mains plug is inserted, contacts 22 b, c are closed to disconnect the battery 17 and supply the equipment with the stabilized voltage derived from a transformer 2 and a rectifier 6. When the equipment is switched off, the contacts b, c of the assemblies 14, 15 are closed and the output voltage is stabilized at a higher level by a voltage divider 18, 19 and a zener diode 20. This voltage charges the battery 17 via the closed contacts 15b, c and 22b, c. To prevent the battery 17 discharging through the contacts 22b, c, 15b, c, 14b, c and the voltage divider 18, 19 when the equipment is switched off and the mains plug is inserted but disconnected from the supply, transistors 25, 30 are provided, the transistors being non-conductive in these conditions.
Patent GB-612796-A (GB)
Title: Improvements in aeroplanes
IPC: F02C7/04
Filed: 1946-06-04
Abstract: 612,796. Jet-propelled aircraft; boundary layer control. LYSHOLM, A. June 4, 1946, Nos. 16971 and 16972. Convention dates, June 4, 1945, and May 15, 1946. [Class 4] [Also in Group XXVI] In a jet-propelled aircraft, the outlet pipe of the gas turbine is associated with an ejector for removing the boundary layer from portions of the aircraft ahead of the ejector. As shown in Fig. 3, the gas turbine plant 6 is provided with a rearwardly and downwardly directed discharge opening 12 at the lower side of the fuselage, the rear portion of the discharge pipe being surrounded by a sleeve 11 forming the ejector and connected to a slot 18 in the wall of the fuselage. In the arrangement according to Fig. 4, the ejector is formed by casings 26, 29 surrounding and extending beyond the turbine casing 27. Boundary layer control slots such as 30, 31, 32 are provided in the air inlet ducts 24, and further slots 33, 34 are connected to suitable points on the surface of the aircraft. The Specification as open to inspection under Sect. 91 also describes, Fig. 4 (Cancelled), an aircraft with propeller 15 driven by a gas turbine 6, the discharge pipe 16 from the latter being directed rearwardly and downwardly, and terminating at the lower side of the fuselage. This subject-matter does not appear in the Specification as accepted.