baber/WOPTO huggingface dataset:
Patent GB-1405666-A (GB)
Title: Electric control system for steam or gas turbines
IPC: F01D17/24
Filed: 1972-10-05
Abstract: 1405666 Turbine control systems BERGMANN-BORSIG GORLITZER MASCHINENBAU VEB 5 Oct 1972 46034/72 Heading FIT The invention relates to a control system for a steam or gas turbine which comprises one or more main control valves 6 actuated by a relatively slowly operating electric drive 5 and one or more secondary control valves 1, 2 having a relatively fast operating electric drive 3, 4, the secondary valve or valves serving to control the flow of working fluid to the turbine within specific limits about a predetermined flow-rate. In the arrangement shown the secondary valve 1 would normally be closed and the secondary valve 2 fully open, the main valve 6 being set at the position for necessary flow-rate to the turbine. In the event of a signal from a controller 7 calling for increase in the flowrate of steam, the secondary valve 1 is rapidly opened by its drive 3, the main valve 5 is then opened further but relatively slowly; when the main valve has reached its required setting, the secondary valve 1 is returned to its closed position. Similarly in the event of a call for reduced flowrate, the secondary valve 2 is rapidly closed, the main valve is slowly closed to the desired setting, and the secondary valve 2 then returned to its open position. A coupling 13 is provided between each valve 1, 2, 6 and its drive 3, 4, 5 such that in the event of turbine failure or loss of electric supply to the drive, each valve is returned to its closed position by spring means.
Patent GB-1368524-A (GB)
Title: Position control system
IPC: B65H9/00
Filed: 1972-10-09
Abstract: 1368524 Position control systems INTERNATIONAL BUSINESS MACHINES CORP 9 Oct 1972 [11 Nov 1971] 46465/72 Heading G4H A system for controlling the position of a device such as a document 17 comprises a motor 3 for moving the device, a brake 9 for stopping the device, a counter 27 having a capacity equal to the number of distance increments between a sensing location and a desired stopping location SP for the device, a source 15 which generates a signal for each increment moved by the device and a sensor 19 at the sensing location for initiating the supply of the signals to the counter which supplies an output to the brake when the counter is full. The motor drives a belt 11 via pulleys 5, 13 and rotates the signal generator 15 which may be a magnetic or photo-electric device. When the leading edge of the document passes the photo-electric sensor 19 a gate 25 is enabled and supplies the signals from the generator 15 to the counter. When the counter is full it supplies an output signal to a control 29 which applies the brake and brings the document to rest at the location SP. A system is also described for accurately aligning a line on a paper with a line on a film. The control systems enable positioning errors due to deviations in the distance moved by documents during braking and accelerating to be corrected.
Patent GB-1183290-A (GB)
Title: Method of Preparation of Homocamphor and of Homoepicamphor
Inventor: CHALIER MELLE GENEVIEVE
IPC: C07C/
Filed: 1968-10-01
Abstract: 1,183,290. Homocamphor and homoepicamphor. COMMISSARIAT A L'ENERGIE ATOMIQUE. 1 Oct., 1968 [10 Oct., 1967], No. 46535/68. Heading C2C. A process for the production of homocamphor and of homoepicamphor comprises dissolving 1,8,8 - trimethyl - bicyclo - [3,2,1] - octane - 2,4- dione in a mixture of hydrazine hydrate with an organic solvent which has a high boiling point and which is capable of supplying protons, e.g. diethylene glycol, heating and refluxing said mixture, adding a strong base after cooling and either (i) distilling off the hydrazine hydrate and water, refluxing the residue and extracting the refluxed residue with a solvent for homocamphor and homoepicamphor or, preferably, (ii) distilling off the hydrazine hydrate until the first crystals of 1,8,8-trimethylbicyclo-(3,2,1) - octane appear in the condenser, cooling the residue to room temperature, adding water and phosphoric acid until a pH lower than 2 is obtained and distilling off the water resulting in entrainment of the crystals of the desired products.
Patent GB-1395691-A (GB)
Title: Fuel tank inerting system
IPC: B64D37/32
Filed: 1973-10-05
Abstract: 1395691 Inerting system for fuel tanks GARRETT CORP 5 Oct 1973 46661/73 Heading ASA A system for inerting a fuel tank, e.g. in aircraft, comprises a catalytic reactor which reacts fuel and air, a cooler for cooling the reaction gases and a conduit which passes the cooled gases to the fuel tank. Cooling may be accomplished by expansion through a turbine, and/or heat exchange with ram air, aircraft fuel, chilled air from the aircraft environmental conditioning system and/or water. Moisture will be inherently removed many of these cooling methods but a specific moisture removing stage may be incorporated into the system. Catalytic reaction of the fuel and air may be effected with a metal oxide catalyst at 500-600‹F. The catalyst may include Pt or Pd.
Patent GB-1378585-A (GB)
Title: Internal combustion engine having sound damping means
IPC: F02B77/13
Filed: 1972-10-13
Abstract: 1378585 Silencing I C engines MOTORENFABRIK HATZ KG 13 Oct 1972 [29 Nov 1971] 47368/72 Heading F1B An I. C. engine has sound damping shells 14, 16, 18 and (20), Fig. 2 (not shown), through openings 14a, 14b, 14c in which project lugs 30, 32, 34, the spaces between lugs and shell being closed by sound damping material 36, the ends of the lugs having mounting faces to two of which are fixed a carrier member (41 or 50) for the attachment of an engine fitting (44 or 55). There is also sound damping material (42 or 53) between the carrier member and the engine fitting. Servicing and maintenance elements &c. of the engine, e.g. dipstick 40, fuel filter 44 and control lever 38 are mounted on the lugs.
Patent GB-1368674-A (GB)
Title: Fastening system for container doors and the like
IPC: E05B65/16
Filed: 1972-10-13
Abstract: 1368674 Door fastening systems P CERUTTI 13 Oct 1972 47423/72 Heading E2A A door fastening system comprises a tubular operating rod 6 rotatably mounted in a supporting bracket 7 on, in use, a door 2, 3 and a pair of fastening elements 4 each having a member by which it is connected, as by welding to an end the operating rod 6. Each fastening element 4 comprises a member 11 rotatable with the operating rod and co-operating, in use, with a fixed member on a container 1. The connecting member has a portion defined between a pair of annular flanges 16, 16' or shoulders which is journalled in a bracket 17 as by means of a pair of bushes 24. The portion 13 of the connecting member between the bracket 17 and the member 11 is of frusto-conical configuration so as to provide strength at this portion. A space 26 is left between the connecting member and the bracket 17 for containing a lubricant. The bushes 24 may be of nylon, Delrin (r.T.M.), Teflon (r.T.M.), bronze or sintered bronze. The operating rod 6 is rotated by a handle 8.
Patent GB-1099095-A (GB)
Title: Abrasives
IPC: B24D3/28
Filed: 1965-11-09
Abstract: An abrasive article e.g. a grinding wheel, comprising cubic crystal structure silicon carbide grains, predominantly of hexagonal shape, the grains being coated with a thin layer of bonding material with spaced areas of the coating of adjacent grains merged and bonded together to provide a strong porous abrasive article.  The grains can be coated with a layer of thermosetting resin e.g. phenolformaldehyde of 1 to 2 mils thickness.  A vitreous bonding agent can also be used.ALSO:Cubic crystal structure silicon carbide grains predominately of hexagonal shape are made by heating equimolar mixtures of silicon and carbon in a non-oxidizing atmosphere to a temperature of from 1300 DEG  to 2175 DEG  C. until the reaction between the silicon and carbon to produce silicon carbide is complete.  The silicon carbide at a temperature above 1300 DEG  C. is then cooled to 1300 DEG  C. at a rate not exceeding 100 DEG  C. drop in temperature per minute. In a preferred embodiment a silicon and graphite mixture is heated in a non-oxidizing atmosphere to a temperature of 1800 DEG  to 2175 DEG  C. over a period of at least 15 minutes, and held at this temperature for at least 10 minute until the silicon and carbon have completely reacted, and then cooled to 1300 DEG  C. over a period of at least 10 minutes. The silicon carbide grains are coated with a thin layer of thermosetting resin, e.g. phenolformaldehyde, with spaced areas of the coating of adjacent grains being merged and bonded together to provide a strong porous abrasive article. A vitreous bonding agent may be used.
Patent GB-1449908-A (GB)
Title: Step motion projector
IPC: G03B1/22
Filed: 1973-10-11
Abstract: 1449908 Film feed mechanism GAF CORP 11 Oct 1973 [13 Oct 1972] 47603/73 Heading G2E A film transport mechanism for intermittently advancing cinematographic film comprises a shuttle 22 carrying at least one claw 26 and moved 'up and down' and 'in and out' by engagement with surfaces on a drive cam 23; a selector cam 24 having a plurality of cam sections which selectively engage the shuttle to intercept its 'in and out' movement and prevent the claw engaging the film to reduce the speed of film advance and having a cam surface which prevents in and out movement completely to effect still projection; means e.g. gears 30, 35 which cause the selector cam 24 to rotate in timed relationship with the drive cam 23, and means 40 which moves the selector cam to change the speed of film advancement. The drive cam 23 comprises cam surfaces 51 and 56 which the walls 52, 53 of the shuttle and a projection 57 respectively engage to impart the 'up and down' and 'in and out' movement. Drive cam 23 is coupled to the selector cam 24 via gearing 35, 30 and performs nine revolutions for one revolution of the selector cam. The selector cam has four rings 31, 32, 33 and 34, Fig. 3. Ring 31 engages a cam follower 29 and prevents the claw engaging the film to give still projection. Rings 32, 33 are of the same diameter as ring 31 and contain one and three cut-outs respectively to allow projection at two slow-motion speeds, while ring 34 does not engage the follower at all for projection at normal speed. The selector cam is moved-relative to the shuttle by a knob 46.
Patent GB-1370304-A (GB)
Title: System for circulating heated fluid
IPC: F24D3/08
Filed: 1972-10-12
Abstract: 1370304 Junction devices; water heaters A J PAVELEY and G M HAWKLEY 12 Oct 1972 [13 Oct 1971] 47609/71 Heading F4U and F4A A central heating system comprises a boiler 10, a heat exchanger 11 which includes a coil arrangement 127, 129 for indirectly heating a domestic water supply, a junction piece 12, and space heating radiators 14. The junction piece includes a first inlet 29 from the heat exchanger 11, a second inlet 19 from the boiler 10, a first outlet 20 to the heat exchanger, a second outlet 35 to the boiler, an outlet 36 controlled by a valve 39 to the space heating radiators inlet connections 40, and an inlet controlled by a bellows valve 45 for receiving fluid from the outlet connections of the radiators 43. In operation, with the temperature of the water system low, the valve 45 will be closed and water will not flow through the radiators. Water is passed by the pump 13 into the heat exchanger housing 23 and issues from the heat exchanger through the pipe 28 into inlet 29. A proportion of the water passes through the connector 31 to the outlet 20, the rest passing to the boiler via outlet 35. Upon the water in the system reaching a predetermined temperature, the valve 45 opens and heated water will then start to flow through the fluid flow circuit which includes the radiators.
Patent GB-1545998-A (GB)
Title: Circuit breakers
IPC: H01H33/985
Filed: 1977-11-16
Abstract: In a high-voltage switch with a case (1) filled with insulating gas, a fixed contact member (2) and a moving contact member (11) and with a fixed ring electrode (3) which surrounds the fixed contact member (2) and is connected to it via a coil (5), the susceptibility of the contact members (2, 11) to erosion by the switching arc is to be reduced and the quenching characteristic improved. This is achieved by the moving contact member (11) being constructed to be mushroom-shaped and exhibiting an insulating body (12) which operates in conjunction with a ring deflector (10) consisting of insulating material and connected form-locked to the case (1). This varies the flow cross section for the gas, heated by the switching arc and compressed, between the insulating body (12) and the deflector (10) in dependence on the degree of opening of the moving contact member (11) and results in a progressive increase in pressure of the gas with subsequent quenching of the switching arc and at the same time reduced wear of the contact members (2, 11). <IMAGE>
Patent GB-1242400-A (GB)
Title: Method of and apparatus for testing circuit breakers
Inventor: HICK MICHAEL ALFRED SAMPSON
IPC: G01R31/333
Filed: 1967-10-20
Abstract: 1,242,400. Testing circuit breakers. ENGLISH ELECTRIC CO. Ltd. Oct.15, 1968 (Oct.20, 1967], No.47951/67. Heading G1U. A circuit breaker 20 is tested at "make" under short circuit current conditions and at "break" under alternating recovery voltage conditions by first applying across the open circuit breaker 20 and an auxiliary breaker 21 the rated voltage, which is derived from a low frequency, low voltage current source 10 summed with a low frequency, high voltage from a recovery voltage source 13. The test breaker is closed, and the build up of current monitored by detector 22, which detector triggers the spark gap 25 and subsequently the auxiliary breaker 21 to complete a short circuit current path for the current from the source 10. After four half cycles of short circuit at low frequency, the test and auxiliary breakers are opened, and a high frequency transient voltage from a voltage injection circuit 12 is applied across the auxiliary breaker, so as to suppress any current flow therein and subject the test breaker to the combined voltages from the low and high voltage sources and to the high frequency transient voltage. The alternators 14, 32 in the current and recovery voltage sources are coupled. The voltage injection circuit incorporates a series resonant circuit 28, 26, whose capacitor bank 26 is charged from a D.C. source 41, which is fired by triggering spark gap 27. Interruptors 17, 34, 29 enable the various circuits to be turned off. The circuit 38 simulates the length of the transmission line with which the test breaker will be associated, and the resistor 40 and capacitor 39 shunt the simulating circuit 38 and the test breaker. Prior to the break test a resistance current interrupter 42 is closed so that the test breaker will clear more easily. It is opened as soon as the test breaker clears. Following the break, the gap 27 is triggered as the first current zero is approached, so that the high frequency injection voltage is applied, to cause the current through the auxiliary breaker 21 to fall to zero more rapidly than normal. This means that the current through the test breaker falls to zero later than normal. It will then be stressed by the sum of voltages from the sources 10 and 13. Capacitors 23, 29, 31 control the waveforms applied to the breaker and resistors 30 and 40 damp parasitic oscillations in the injection transient. Following the decay of the transient voltage the isolating breaker 29 may be opened to allow recharging of the capacitor bank 26.
Patent GB-1330686-A (GB)
Title: Rotary electric generators
IPC: H02K55/00
Filed: 1970-10-09
Abstract: 1330686 Magnetic bearings HITACHI Ltd 9 Oct 1970 [9 Oct 1969] 48112/70 Heading F2A [Also in Division H2] A rotary electric generator comprises two or more discoidal rotors 31, 41 mounted coaxially with and in mutually spaced relation upon a vertical shaft 51 for rotation around its axis, a stator having a cylindrical stator coil 71 for externally applying to the rotors a magnetic field which is perpendicular to the rotor disc faces, one or more armature coils 61 ... 63 secured to the stator and arranged about the shaft and between the rotors, and discoidal magnetic floating bearings 101, 201 at each end of the shaft and located in the vicinity of each end of the stator coil 71 portions of the bearings being of imhomogeneous hard superconductor material maintained in a superconducting state and being formed to provide a dilute magnetic region having axial symmetry about the shaft axis in a divergent magnetic field near each end of the stator coil. As shown, each bearing is in the vicinity of the gap between the stator coil 71 and a respective one of two auxiliary field coils 81, 91 connected in series opposition, and the material is in the form of two discs 103, 104, or 203, 204, spaced by spacers 105, 106, or 205, 206, in supporting members 107 or 207, all having coolant passages e.g. 108 or 208. The shaft is driven by a d.c. motor not shown, and the generator rotor and stator are immersed in liquid helium in a cryostat, not shown.
Patent GB-1128446-A (GB)
Title: Measurement of turbidity of fluids
Inventor: BRIGGS RONALD
IPC: G01J1/16
Filed: 1964-11-26
Abstract: 1,128,446. Photo-electric turbidity measurement. NATIONAL RESEARCH DEVELOPMENT CORP. Jan. 3, 1966 [Nov. 26, 1964], No. 48129/64. Heading G1A. The turbidity of a fluid is measured by directing light into the fluid and detecting the light transmitted directly through and light scattered at right angles to the direct path, using respective photocells, to obtain signals which are multiplied together to provide a resultant signal proportional to the turbidity. In the embodiment described, two lamps L 1 , L 2  are arranged on two adjacent sides of the sample cell and two CdS photoresistors P 1 , P 2  on the other two sides. The lamps are arranged in a circuit, Fig. 2, such that at any one time only one lamp is switched on, and that the cell receiving directly transmitted light is connected in the input circuit of an amplifier, and the cell receiving scattered light at right angles to the transmitted beam, is connected into the negative feedback circuit of the amplifier. This causes an effective multiplication of signals from the photo-cells. The lamps and connections of the photo-cells are switched alternately at, say, 5 minute intervals, the output of the amplifier being stored in turn in two capacitors. The stored voltages can then be added to obtain a voltage representative of the turbidity. A difference value of the two stored voltages can be used to trigger an automatic clearing system for this adding arrangement. If monochromatic light sources are used, multiplication of the two stored amplifier output signals may give a more accurate result. A mathematical explanation is given of the dependence of turbidity on the sum or product of the two amplifier outputs, and of the effects of uneven fouling of photo-cells or mismatching of the cells due to unequal fatigue.
Patent GB-1193849-A (GB)
Title: Three Components Hydrogenation Catalysts and a process for Hydrogenating Polymers by the use of them
IPC: B01J31/04
Filed: 1967-10-23
Abstract: 1,193,849. Hydrogenation catalyst. BRIDGESTONE TIRE K.K. 23 Oct., 1967 [31 Oct., 1966; 20 July, 1967], No. 48147/67. Heading B1E. [Also in Division C3] An hydrogenation catalyst consists of the reaction product of (1) an alkene and/or an alkyne, (2) at least an organic compound of Ni, Co or Fe having Me-O bonds and (3) a metal compound reducing agent which is an organometallic compound or a hydride containing at least one metal of Group IA, IIA, IIB or IIIA of the periodic table, the 3-component catalysts having been prepared in an inert atmosphere not containing hydrogen such that the mole ratio; of organic compound to unsaturated hydrocarbon is 1:0.1 to 1:50 and the mole ratio of organic compound to reducing agent is 1:0.2 to 1:8.
Patent GB-1064299-A (GB)
Title: Improvements in liquid surge reservoirs and in pressuregenerating liquid surge reservoirs, or pressurizers, adapted for use with systems operating with fluid under pressure
IPC: G05D16/12
Filed: 1963-12-09
Abstract: 1,064,299. Surge damping. BABCOCK & WILCOX CO. Dec. 9, 1963 [Dec. 12, 1962], No. 48485/63. Heading F2V. [Also in Division G3]  A liquid-surge reservoir 10 has a connection 26 to a system, e.g. the primary cooling-system of a nuclear reactor and spaced from the connection 29 is a tube 46 leading to a conical insurge baffle 12. A solid or perforated secondary-baffle 52 lies in the baffle 12 above the tube 46. The reservoir 10 contains vaporizable liquid maintained at a given level 20 whilst a spray nozzle 36 opens into the vapour space above the liquid to introduce coolant thereto; immersion heaters 38 are disposed in the liquid to vaporize and so pressurize the system through the connection 26. Connections 40, 42, 44 are also provided for liquid-level controlling-means, a pressure measuring device, and a safety valve. The reservoir serves to maintain the system pressure within set limits, the heater 38 generating vapour to increase the pressure and the nozzle 36 injecting coolant when a reduced pressure is needed. Should a surge occur in the system, the momentum is dissipated by the baffle 52, the baffle 12 containing the insurging liquid; if an outsurge follows at once the same liquid is returned to the system, if not the liquid mixes with and is heated to the temperature of the other liquid in the reservoir. The reservoir may be used in a situation where both or either are of its pressure regulation and surge damping properties are required.
Patent GB-1038838-A (GB)
Title: Process for the production of alkyl-tin trihalides
IPC: C07F7/22
Filed: 1963-12-09
Abstract: Alkyl tin trihalides are prepared by the reaction between dialkyl tin dihalides or tetra-alkyl tin and tin tetrahalides in the presence of phosphorus-halogen compounds, alone or in admixture with phosphorus oxides, or a hydrogen halide.  Specific catalysts are phosphorus oxychloride, alone or in admixture with phosphorus pentoxide, and hydrochloric acid.  The reaction is carried out at the boiling point of the mixture, advantageously under pressure and optionally in the presence of an inert diluent. The process of the invention may be modified in that tin tetrahalide and tetra-alkyl tin are reacted in known manner to form alkyl tin trihalides, which may be separated, and other alkyl tin halides, and the reaction completed by adding further tin tetrahalide and the catalyst of the invention.
Patent GB-1120690-A (GB)
Title: Apparatus for knotting threads with the so-called weaver's knot
IPC: B65H69/04
Filed: 1966-10-28
Abstract: 1,120,690. Knotting apparatus. P. MESSA and D. MESSA [trading as DITTA MES DAN ANNODATORI TESSILI DI PIETRO MESSA], 28 Oct., 1966 [28 Oct., 1965], No. 48542/66. Heading D1C. A hand knotting device for tying a weaver's knot comprises a knotting bill mechanism 23 actuated by gearing 20, 21 from a helical member 19 rotated by a rod 18 engaging the member when a lever 14 is moved to rotate a member 13 securing the rod. The member 13 also causes two cam plates 45, 60 one at each end of shaft 12 to rotate and these actuate through pins and lever mechanism two pairs of thread engaging members 33, 34 and 47, 48 to deflect the threads extending between the end plates 1, 2 and guided therein in slots 6, 7, and 8, 9. In addition, a knot remover mechanism 66 is actuated by the cam plate 45. The arrangement is such that the single downward movement of lever 14 is sufficient to actuate the various mechanism and discharge the completed knot without the necessity of having to release the lever. Also the pivot point 70 of the knot remover mechanism 66 as well as the pivot points for the levers of the thread engaging mechanism are adjustable to enable the mechanism to accommodate yarns of different size.