baber/WOPTO huggingface dataset:
Patent GB-1379327-A (GB)
Title: Solid waste incinerators
IPC: F23G5/16
Filed: 1972-11-24
Abstract: 1379327 Incinerators GENERAL ELECTRIC CO 24 Nov 1972 [13 Dec 1971] 54332/72 Headings F4W and F4B  An incinerator comprises a combustion chamber within a housing, a loading door which is sealed during an operating cycle, heating means external of the combustion chamber, a primary air inlet, a blower for circulating gases within the chamber and discharging part of the gases through a fly ash separator, and a preheater to the external heating means, some of the heated gases being returned to the chamber and remainder passing through an after burner and flamebox to an exhaust blower. The incinerator may be built into a kitchen fitment, the combustion chamber having an inclined semi-cylindrical front wall 22, Fig. 2, and an inclined top wall 37 with an opening sealed by a lid 24 linked to an access door 16, having a lock linked to switches controlling the electricity supply. Air from a damper 67 passes up a duct 64 and descends through the double rear wall of the combustion chamber to an inlet 60. A blower 77 receives gases from the combustion chamber and recirculates part of them through a duct 85, and feeds part of the gases to a series of cyline separators 88 and 92, 93, 94, Fig. 3, and a preheater 96 extending the full height of the incinerator. The gases then enter the external heater chamber through an inlet 98, and are further heated by the element 44. Some of the heated gases return to the combustion chamber at an outlet 100, and the remainder are supplied to an after burner 102 together with air from a second blower 81 which is drawn in over the rotor 80 driving all the blowers and delivered to the side of semicylindrical double front wall of the combustion chamber at 107 before reaching the after burner at 109, Fig. 2. From the after burner the gases pass to a flame box 113 extending below the blowers and having a tertiary air inlet at the bottom before passing through exhaust blower 82 to the flue 118, Fig. 3. In operation, a load of refuse is fed to the combustion chamber and the access door 16, Fig. 2 latched. This allows the heater 44 and the preheater element to be energized. The primary air damper remains closed until the precombustion of the refuse causes a thermostat 68 to operate, which starts the blower motor through a thermal delay switch. A thermostat 127 operates a door lock and starts the blower motor at a considerably lower temperature than that necessary to operate thermostat 68 to open thermally actuated damper 67. An agitator 146 at the bottom of the combustion chamber, Fig. 2, is started at the same time as the blowers. An overheat thermostat 153 de-engerizes the heating elements when the combustion chamber temperature becomes excessive.
Patent GB-1156789-A (GB)
Title: Manufacture of Calcium Sulphate Hemihydrate
Inventor: CHAMBERS GEOFFREY PRYTHERCH CA
IPC: C04B11/024
Filed: 1965-12-23
Abstract: 1,156,789. Retarded plasters; calcium sulphate hemihydrate. BERK Ltd. 7 Dec., 1966 [23 Dec., 1965(2)], Nos. 54570/65 and 54571/65. Headings C1A and C1H. A retarded α-CaSO 4 ¢H 2 O plaster is obtained by calcining a mixture of gypsum and 0À5-10% b.w. of at least one inorganic or organic metal salt at elevated temperature and pressure, e.g. 130-250‹ C. and 20-400 lbs. p.s.i. Preferred salts are of lithium, but Ca(OH) 2 , Sa(OH) 2 , Ca 3 (PO 4 ) 2 , borax, Na 2 CO 3 , NaHS0 4 , Na 2 SO 4 , K 2 SO 4 , mono-, di- and tri ammonium phosphate, ammonium borate, sodium and ammonium citrates, gluconates and aconitates, and calcium propionate, maleate, succinate and citrate are mentioned. Wood shavings or dust can be included after calcination.
Patent GB-1302787-A (GB)
IPC: B01D17/00
Filed: 1970-11-20
Abstract: 1302787 A.C. Ionophoresis K KASHII 20 Nov 1970 [20 Nov 1969] 55309/70 Heading C7B Electric current is passed between a plurality of electrodes disposed in succession in an array, each said electrode being energized by a respective phase of a plural phase A.C. supply in such a manner that the phase sequence in which the electrodes are energized corresponds to their sequence in said array, in order to subject to ionophoresis an electrolyte in contact with said electrodes and having conductivity 1-2000 Ámho/cm, the number of phases in said A.C. supply being 2-6, the voltage being 0À4-20 and the frequency 0À1- 60 cycles/minute. Apparatus comprises a closed container 4 comprising a plurality of porous plate electrodes 6, each connected to one phase of a plural-phase A.C. supply, insulating screens 5 positioned between said electrodes, inlet means 1 for electrolyte and outlets 2 and 3 for inophoresis products. As shown electrodes a, d, g, are connected to one terminal 7 of a 3-phase supply, b, e, h, to another terminal 8, and c, f, i, to terminal 9. Other embodiments of apparatus have (1) 3 porous electrodes wound spirally round a central pillar, each electrode being connected to one phase of a 3-phase supply, or (2) co-axial porous cylindrical electrodes. Impure water is introduced at 1, purified water exits at 2 and concentrated impure water exits at 3.
Patent GB-1361880-A (GB)
Title: Photographic diaphragm shutter with electronic exposure timing
IPC: G03B7/00
Filed: 1971-11-30
Abstract: 1361880 Shutter-diaphragms PRONTORWERK ALFRED GAUTHIER GmbH 30 Nov 1971 [23 Jan 1971] 55467/71 Heading G2A In a shutter-diaphragm device wherein the shutter blades 41, 42, Figs. 1 and 2 are opened by a weak driving force and closed by a strong driving force, depression of a lever 2 moves an armature 19 into contact with a magnet 18, energizes the magnet, and then releases a strong spring 8 which causes a lever 9 to move so as to turn an arm 12 first counter-clockwise to allow the blades to open under the force of a weak spring 40, Fig. 2, or two springs 50, 51, Fig. 7, acting in succession, and then, when the armature is released by an electronic timing device so as to release a lever 15 from a pawl 30, to turn clockwise so that a pin 17 positively closes the blades by the force of the spring 8. These may be separate blades for opening and closing the aperture. Cover blades which completely close the aperture when in closed position may also be actuated by a mechanism 12, 15, 30, 19, 18. A selector may also be provided to set the device for automatic operation controlled by the timer or to manual operation to provide a fixed exposure time.
Patent GB-1214640-A (GB)
Title: Sterically rearranged polymers
IPC: C08F8/48
Filed: 1967-12-07
Abstract: 1,214,640. Treating polymers. JOHNSON & JOHNSON. 7 Dec., 1967 [26 July, 1967], No. 55764/67. Addition to 1,187,406. Heading C3P. Specific stereoregular polymers are racemized by reacting with a free radical initiator and a bromine compound at a temperature at which the polymer is substantially non-crystalline. The polymer may be of butene-1, isobutene, styrene, 3 - methyl butene - 1, 4 - methylpentene - 1, 4 - methylhexene - 1, 5 - methyl hexene-1, an acrylate, vinyl chloride or vinyl fluoride, and may be block copolymer. The radical initiator may be dicumyl peroxide, 2,5-dimethyl - 2,5 bis (t. butylperoxy) hexane or hexyne-3, or di-t. butyl peroxide. The bromine compound is preferably organic and may be tris (2,3-dibromopropyl) phosphate, 1,2-dibromocyclohoxane, α,α<SP>1</SP> - dibromo - p - xylene, 1,1,2,2 - tetrabromoethane, 1-bromododecane, 2,3-dibromopropanol or carbon tetrabromide; and dispersants, e.g. stearic acid, may also be present. Many examples are given of the racemization of (I) polystyrene, (II) poly-4- methylpentene-1 and (III) an ethylene/propylene block copolymer.
Patent GB-1235016-A (GB)
Title: Brake pressure control system
IPC: B60T8/1761
Filed: 1969-11-14
Abstract: 1,235,016. Anti-skid systems. NIPPON AIR-BRAKE CO. Ltd. 14 Nov., 1969 [20 Nov., 1968], No. 55984/69. Heading F2F. In a brake pressure control system for a vehicle having speed detecting means for detecting the wheel speed of the vehicle and reference speed setting means including memory means for storing an output delivered from the speed detecting means at the moment of brake pressure application, the control system comprises an electrical circuit for giving an approximate reference deceleration of the vehicle during actuation of the brakes, means for computing an approximate vehicle speed from the reference deceleration and the wheel speed stored in the memory means, and means for comparing the wheel speed obtained by the speed detecting means with the approximate vehicle speed thereby to carry out on-off control of the brakes depending on the result of comparison therebetween. As shown, when the wheels of a vehicle start to decelerate due to braking action and the voltage generated by the speed-responsive generator 1 is reduced to a value lower than the voltage downstream of a diode 2, the speed detector is cut off from a capacitor 3 the output of which is applied to an integrating computer 5 comprising a D.C. power source 8, a resistor 4 and a grounded emitter transistor 9, the amount of discharge from the circuit being fixed by the resistor at a constant value corresponding to a predetermined deceleration of the vehicle. An approximate speed Vs of the vehicle put out by the computer 5 is applied to a voltage dividing circuit 6 having a setting of (1-S i ), where S i  is the desired slip rate, and which carries out the computation of V s (1-S i ). A differential amplifier 7 compares the wheel speed W delivered from the generator 1 with the output from the multiplier 6 and the signal therefrom is applied to a brake actuating circuit.
Patent GB-1497270-A (GB)
Title: Apparatus for preventing the tilting of telescopic jib cranes
IPC: B66C23/90
Filed: 1974-12-31
Abstract: 1497270 Crane safety devices E KIRSTEN 31 Dec 1974 [4 Jan 1974] 56144/74 Heading B8B Apparatus for preventing the tilting of a telescopic jib crane wherein an hydraulic cylinder 7 is provided for luffing the jib 5 comprises a circuit, Fig. 3, including a set of switches 16 to 20 which sequentially open or close through pivotal movement of the cylinder 7 as it raises or lowers the jib 5, a set of pressure monitor switches 10 to 15 which sequentially open or close as the pressure in the cylinder 7 increases or decreases, a telescope switch 23 which is open when the jib 5 is telescopically extended and a relay 24 which is energized so long as the permissible tilting moment for the particular configuration in use, Fig. 2 (not shown), is not exceeded. Above the limit the relay 24 acts to terminate crane operations which would increase the tilting moment.
Patent GB-1125254-A (GB)
Title: Process for the preparation of phosphonamides and novel phosphonamides produced thereby
Inventor: NORMANT HENRI MARIE
IPC: C07F9/44
Filed: 1966-12-16
Abstract: 1,125,254. N-Substituted phosphonamides. RHONE-POULENC S.A. 16 Dec., 1966 [17 Dec., 1965], No. 56495/66. Heading C2C. Phosphonamides of the general formulµ some of which are novel, where R and R<SP>1</SP> are organic radicals free from substituents reactive under the conditions of the reaction and R<SP>1</SP> is an electron-withdrawing group and R 1  and R 2  are hydrocarbyl radicals free from substituents reactive under the conditions of reaction, which may be joined together with the adjacent nitrogen to form a heterocyclic radical, are prepared by reacting a compound of formula R-X or R<SP>1</SP>-CH 2 -X, where X is halogen or a sulphuric or sulphonic ester residue, with an aged solution of an alkali metal in a triaminophospine oxide of the formula O=P(NR 1 R 2 ) 3 . The aged solution is generally prepared by dissolving the metal in the phosphine oxide and heating to accelerate the dissolution and ageing. The novel products are compounds of the above formulµ, where R 1  and R 2  are C 1-4  alkyl radicals or together with the adjacent nitrogen atom represent pyrrolidino or piperidino, R is C 1-10  alkyl and R<SP>1</SP> is phenyl, vinyl or vinyl substituted by C 1-7  alkyl. These phosphonamides have pestioidal properties.
Patent GB-1400820-A (GB)
Title: Support devices for nuclear reactor fuel rods
IPC: G21C3/34
Filed: 1972-12-07
Abstract: 1400820 Fuel elements SIEMENS AG 7 Dec 1972 [10 Dec 1971] 56612/72 Heading G6C A support device for the fuel rods of a nuclear fuel assembly comprises two spaced lattice elements 1, 2 provided with fixed fuel rod abutments 3, and between which extend multi-limb flat springs 4 serving as resilient fuel rod abutments. At certain positions, control rod guide tubes 6 (only one shown) extend between the lattice elements 1, 2 and are surrounded by spacer sleeves 5 each connected with the lattice elements 1, 2 and at least at one location with the corresponding guide tube 6. The sleeves 5 project beyond at least one lattice element 1 or 2. The connections, at 9 between the sleeves 5 and guide tubes 6 and at 10 between the sleeves 5 and the lattice elements 1, 2, are preferably spot welds. The sleeve ends are formed with axial slots 11 and the segments between these slots are bent outwardly. Each of the segments has only one weld location 9 or 10. A jacket 7 surrounds the lattice elements 1, 2 and is connected to them by means of rivets 12 extending through inwardly bent portions 13 of the jacket 7, with their inwardly directed end faces flush with the inner face of the jacket 7 and connected with the associated lattice element outer web 8, as by spot welding.
Patent GB-1166870-A (GB)
Title: Improvements in and relating to Cutting Tools
IPC: B23B27/16
Filed: 1966-12-19
Abstract: 1,166,870. Lathe tools. FELDMœHLE A.G. 19 Dec., 1966 [17 Dec., 1965], No. 56832/66. Heading B3T. A lathe tool comprises a holder 1, Fig. 1, a support plate 2 screwed to the holder, an interchangeable cutting element 3, a chip breaker 5, and a clamp 4. The latter has lugs 12 which are guided in recesses in the holder, and a shackle 13 for supporting the chip breaker is supported in bores 14 in the lugs, and a notch 15 in the clamp. The clamp is actuated by a screw 6 which has a screw thread 7 for screwing into the holder, and a second screw thread 8 of smaller pitch, for screwing into the clamp. In a modification, the screw, Fig. 3, has a screw thread 27 for the holder 21, and a smooth shank 28 for the clamp 24, the clamp being raised by a circlip 40 carried by the screw.
Patent GB-1443018-A (GB)
Title: High intensity arc lamp
IPC: H01J61/50
Filed: 1973-12-07
Abstract: 1443018 Discharge lamps GENERAL ELECTRIC CO 7 Dec 1973 [8 Dec 1972] 56882/73 Heading H1D [Also in Division H2] A lead 16 to a central end contact 18 on the base of a double-envelope arc lamp is surrounded by a sleeve 34 of refractory insulating material which retains its shape and does not become conductive at high temperatures. Suitable materials are quartz, quartz-like glass, and ceramics. Lime glass and hard borosilicate glass are not suitable. Preferably the lead 15 to the shell 17 of the base is surrounded by a similar sleeve 38. The base is secured to the lamp by screwing the shell 17 over a threaded retaining ring 19 which has inwardly turned notches 21 engaging corresponding dimples in the glass neck 12 of the lamp envelope. The sleeve 34 insulates the lead 16 from the ring 19. If an arc occurs inside the base between the leads 15 and 16 at the positions where they emerge from the press 14, the melting leads ball up within the sleeves 34 and 38, thus lengthening and constricting the arc until it is extinguished (Fig. 2, not shown). A further fuse arrangement 31, 32, 33 is provided as a protection against arcs between the leads 15 and 16 inside the outer envelope 3. In an alternative embodiment (Fig. 3, not shown) the sleeve 34 is shorter and is retained in position by a link in lead 16.
Patent GB-1438590-A (GB)
Title: Electrical circuit breaker
IPC: H01H33/91
Filed: 1973-12-10
Abstract: 1438590 Gas-blast circuit-breaker FUJI ELECTRIC CO Ltd 10 Dec 1973 [8 Dec 1972] 57200/73 Heading H1N The quenching-gas compression cylinder 7 of a gas-blast circuit-breaker is formed with two portions of different cross-section A and B. Two corresponding pistons 8 and 9 are provided, the smaller 8 being fixed and the larger 9 being movable, but biased by a spring 10. During opening, the movable contact 2 is drawn down taking the cylinder 7 with it, the pressure increase in B being balanced by the spring 10 until the shoulder 12 appraches the piston 9. As the fixed piston 8 enters the chamber A the compressed gas from B is forced into A via ports 11. This arrangement is stated to provide a higher pressure for a given stroke (as illustrated by the curves of Fig. 4, not shown) thus enabling the arc-quenching time to be shortened.
Patent GB-1246970-A (GB)
Title: Improvements in and relating to the control of synchronous machines
Inventor: THORPE HOWARD JOHN
IPC: H02P25/02
Filed: 1967-12-15
Abstract: 1,246,970. Electric motors. ENGLISH ELECTRIC CO. Ltd. 13 Dec., 1968 [15 Dec., 1967], No.57210/67. Heading H2A. A control system, for a synchronous machine 11, comprises a rectifying thyristor bridge network 7 connected to an A.C. supply 9 and controlled by an input signal 15 and feeding an inverting thyristor bridge network 8 connected to the machine windings 10, the inverter being controlled by a logic circuit 21 itself controlled in dependence on the position of the machine shaft 18, the logic circuit being adapted during starting and low speed running periods firstly to override the input signal and interrupt the current flow in one half of the rectifier bridge, e.g. 1, 3, 5, while commutation is effected between two thyristors, e.g. 2, 4, in the corresponding half of the inverting bridge, and secondly, to activate during commutation a switch 28, 29 which completes, through the upper halves of the two bridges, an auxiliary conductive path including that conducting thyristor e.g. 3 in the inverter, not involved in the commutation. The logic circuit is controlled by a shaft position encoder 19 and amplifier 20, and during low-speed operation the logic circuit output feeds a memory circuit 22 (comprising two bi-stable circuits 22A, 22B) and a two-part servo control circuit 16 controlling the firing angles of the rectifying thyristors. One or the other of the two halves of the circuits 22 and 16 are rendered operational by the logic circuit depending on which half of the rectifying bridge has to be switched off. The operational half of memory 22 also opens one or the other of two thyristors 28, 29, thus completing an auxiliary conductive path through corresponding halves of the two bridges. The auxiliary path prevents notching in the current waveform of thyristor 3, say, while commutation is effected between 2 and 4. A zero detector 24 or 25 detects zero current in the appropriate half (1, 3, 5 in this case) of the rectifying bridge and resets the operational half of the memory circuit. Commutation is completed and thyristor 28 or 29 switched off. Above a specified shaft speed the output of a digital to analogue converter 31 causes a level detector 32 to block the bi-stables 22A, 22B. Natural commutation then occurs in the inverting bridge and shaft speed is controlled by the input signal 15 controlling the D.C. output of the rectifying bridge or by varying the excitation of field winding 12. If the shaft speed falls below a specified value the level detector 32 becomes ineffective and forced commutation of the inverting thyristors is again effected using circuits 21, 22 and 16. It is stated that provision may be made for producing a constant D.C. link current or for regenerative action in the two bridges or for bi-directional running of the machine.
Patent GB-1379416-A (GB)
Title: Locking differential for vehicles
IPC: F16H48/30
Filed: 1972-12-13
Abstract: 1379416 Differential gear DAIMLER-BENZ AG 13 Dec 1972 [23 Dec 1971] 57400/72 Heading F2D Friction locking clutches 22, between sidewheels 17 and planet cage 15 of a bevel differential gear on a motor vehicle, are engaged by an electronic control (not described), in response to a predetermined difference in speeds, as detected by sensors, between driven and non-driven wheels on the same sides of the vehicle (Fig. 1, not shown). The locking clutches 22 may be engaged electromagnetically, pneumatically or, as shown, by hydraulic pressure supplied at 28 to annular pistons 25, bearing through needle roller thrust bearings 31, on presser plates 23, which have axial projections 24 passing through openings in the planet cage 15. Interengaging lugs 25a, on the pistons 25 and fixed housing, prevent rotation of the pistons. The clutch engaging pressure 28 is controlled by electronically actuated supply and exhaust valves (9, 10, Fig. 1 not shown), the former communicating with a pressure reservoir (11) charged by an enginedriven pump (12). The pressure reservoir may be that of a hydropneumatic suspension system. The control may be combined with that of an anti-lock brake system or an acceleration regulating system.
Patent GB-1309999-A (GB)
Title: Thyristor triggering circutis
IPC: H02M1/08
Filed: 1971-12-10
Abstract: 1309999 Semi-conductor pulse forming circuits INTEC INDUSTRIE TECHNIK ROBERT R SCHLAICH 10 Dec 1971 [14 Dec 1970] 57416/71 Heading H3T A trigger circuit for a thyristor connected across an A.C. supply comprises two voltage dividers connected across the supply, each including a resistor and a respective, oppositelypoled, Zener diode 1, 2, and a differential amplifier 3 having its inputs connected to the junction points on the dividers, to provide, at its output, pulses 5 coinciding with the zero crossings of the A.C. supply for triggering the thyristor. The dividers provide a bias for transistor amplifier 3 to hold it conducting except for the instant of a zero crossing. At this point amplifier 3 cuts off and its collector rises to U+ to provide a short output pulse at this instant. Any residual D.C. component between pulses may be removed by including a further Zener diode (6) or a capacitive coupling (7) between the collector and the thyristor, Fig. 2, 3 (not shown). A PNP transistor and a negative supply (-U) may be used to give negative pulses Fig. 2 (not shown).
Patent GB-1340053-A (GB)
Title: Overload protection ofor electric motors
IPC: H01H71/16
Filed: 1970-12-07
Abstract: 1340053 Automatic circuit breakers FUCHS ELECTRICAL INDUSTRIES (PTY) Ltd 7 Dec 1970 [12 Dec 1969] 58073/70 Heading H1N An automatic circuit breaker has bimetals 16 which move a trip bar 20 and hence the circuit breaker operating trigger 26 at an operating current setting initially determined by screw 61 and adjustable by dial operated cam 39 but having a higher setting, e.g. for motor starting currents, obtainable by depressing plunger 40. In Fig. 1 the thermally actuated device B is connected in series with a known electromagnetically actuated device A, both tripping the movable circuit breaker contacts 3 via common trip bar 15. In Fig. 5 the bimetal 16 of each phase, at the preset operating current, push against the pivotally mounted main trip bar 20. A trigger 26 is pivotally mounted on support member 21b and is held in its inoperative position against a spring bias by latching abutment 30 on the stop bar 29. Displacement of, the main trip bar on overload, or the auxiliary trip bar 25 on open circuiting of one phase, releases the latched trigger which operates the circuit breaker of Fig. 1 via trip lever 32. The operating current setting is achieved by moving the position of latching member 30 relative to the abutting part 28 of trigger 26. Screw 61 is adjusted so as to move arm 35 and hence the stop bar 29, this setting the normal operating current. Further adjustment is possible by rotating dial 45 which also rotates curved cam 39a acting on spring blade 41, this pivoting the plate 36 on which the screw 61 acts. A much higher current setting is possible by depressing the plunger 40 which slides the cam 39a along the blade 41. The mechanism B may have, instead of or in conjunction with the mechanism A, a solenoid (50) and a movable contact armature (51) which protect the bimetals 16 against a high current by providing a shunt path across them, Fig. 3 (not shown). The push button 40 may be operated by means of a solenoid, Fig. 4 (not shown).