baber/WOPTO huggingface dataset:
Patent GB-1171772-A (GB)
Title: Fuel Systems for Gas Turbine Engines.
Inventor: LAWRENCE OWEN NAPIER
IPC: F02C9/30
Filed: 1965-12-17
Abstract: 1,171,772. Gas turbine engine fuel systems. JOSEPH LUCAS (INDUSTRIES) Ltd. Feb. 21, 1967 [Dec. 17, 1965], No. 53583/65. Heading F1G. [Also in Divisions F2 and G3] A gas turbine engine fuel system comprises a plunger for determining the rate of flow of fuel through a passage from the fuel pump to the engine, a lever connected to the plunger to impart movement to it, and a mechanism engageable with the lever and comprising a first part connected for angular movement about an axis to means responsive to changes in one variable related to engine conditions, a further part connected to the first part for angular movement relatively to the first part about an axis offset from but parallel to that about which the first part is movable, a further lever connected to means responsive to changes in another variable related to engine conditions, the further lever acting in one direction on the further part, and the first-mentioned lever engaging with the further part in a directiontransverse to the direction of a ction of the further lever on the further part. A swash plate pump 12, Fig. 1, supplies fuel to an engine 10 via a pipe 17, a throttle valve plunger 22, a pipe 19, a further throttle valve 63 and a pipe 20. The throttle valve plunger 22 is operable by a lever 28 connected to it by a tension spring 31 and also connected to an adjustable tension spring 33 and acted on by levers 35 and 36. Lever 35 is actuated by an evacuated bellows 42 subjected through a pipe 43 to the pressure upstream of the engine compressor and a diaphragm 41 subjected on one side to the same pressure and on the other side to a function of the pressures upstream and downstream of the compressor, this function being obtained by a potentiometer formed by restrictors 44, 45 connected between the pipe 43 and a pipe 46 subjected to the pressure downstream of the compressor. Lever 36 is actuated by an engine-driven governor 52, the force exerted by the governor spring 49 being controlled manually through a cam 58. A mechanism interposed between the levers 35, 36 and the lever 28 comprises a roller 34 bearing against the lever 28 and carried by a pair of arms 67 pivoted at 69 to a second pair of arms 68 pivoted at 71 to fixed structure. Lever 35 bears against the roller 34 while lever 36 is connected at forks 72 to the arms 68. With this arrangement the lever 35 can always move the lever 28, whereas the lever 36 cannot move the lever 28 when the arms 67 have been pivoted into the position shown, in which the roller 34 is concentric with the pivot 71. The lever 28 carries a half-ball valve 27 which controls a flow from the pipe 17 to a drain 26 via a restrictor 23, thereby controlling the pressure difference exerted across the plunger 22. A second engine-driven governor 61 controls the throttle valve 63. A pipe 16 connected to the downstream side of this valve communicates with a servo control 14 for varying the stroke of the pump 12 and hence the fuel supply to the engine.
Patent GB-1288241-A (GB)
IPC: B21H3/02
Filed: 1969-11-03
Abstract: 1288241 Self tapping screws LAMSON & SESSIONS CO 3 Nov 1969 [20 Nov 1968] 53689/69 Headings B3M and B3N [Also in Division F2] A thread forming fastener comprises a body having an inwardly tapering portion at one end of its shank and a thread convolution on the tapered portion, the convolution having a plurality of wide flank portions 20 for forming the flanks of a thread and a plurality of high crest portions 22 for forming the roots of a thread, the wide flank portions having from the root to the crest of the convolution a greater flank width than the high crest portions, the high crest portions having a greater crest height than the wide flank portions, and the high crest and wide flank portions being arranged alternately on the convolution. A similar construction may be used on a lockthreaded fastener (see Division F2). The tapping thread is formed by a rolling die 60, Fig. 7. The die has a plurality of grooves 62, corresponding to a standard thread on a main body portion 60 for forming threads on a cylindrical part 18 of a shaft, or an outwardly sloping portion 68 for continuing the thread convolutions on a tapered portion 12 of the shaft and trapezoidal inserts at the trailing edge 72 for forming the wide flank portions 20. In use the trapezoidal inserts are stated to apply a radially-inwardly directed pressure to portions of the crest of the standard thread formed on the tapered end 12 of fastener 10, thereby reducing the crest height and increasing the flank width thus providing the wide flank portions of the thread.
Patent GB-1114459-A (GB)
Title: Measuring system
IPC: G01N27/22
Filed: 1965-12-17
Abstract: 1,114,459. Electrophysical measurement; moisture. INDUSTRIAL NUCLEONICS CORPORATION. Dec. 17, 1965 [Dec. 24, 1964], No. 53739/65. Heading G1A and G1M. Apparatus for measuring the moisture content of paper leaving a drying unit, comprises a sensing head arranged to scan across the width of the paper, carrying a capacitative moisture probe and an infrared temperature sensor to provide a temperature compensated humidity signal. The infrared detector has a further thermistor providing a signal to compensate for variations in the ambient temperature of its housing. A further measuring head detecting beta radiation through the paper may be provided to gauge the "weight" of the paper. In a preferred embodiment the moisture signal is derived from a dual frequency servo null system Fig. 7, similar to that disclosed in 939669. L. F. and H. F. signals are fed (i) through a phase inverter 168 to the sensing probes 130, 132, and (ii) through a balancing capacitor 174 to junction point 170. Any out of balance signal due to moisture variation is amplified at 176 and fed to H. F. and L. F. demodulators 182, 184. The amplitude difference between these signals energizes a servomotor 188 (i) to drive a potentiometer 166 in the output of the L. F. oscillator to rebalance the system, and (ii) to drive a potentiometer 190 providing a millivolt signal at the tapping proportional to the moisture content of the paper. The thermistors 70, 120 connected in resistance network 198 add a correcting signal when the temperature deviates from a standard setting, to provide a compensated output at 914, 196. INFRARED DETECTOR comprises a heat insulating housing Fig. 2, insulated from the atmosphere by a dead-air space between windows 68, 104 and containing a thermistor 70 with a blackened silver foil heat absorber disc 72 suspended from a pair of thin copper wires 74 at the focus of a mirror 98. A further thermistor 120 is mounted at the edge of the mirror to detect variations in the ambient temperature in the housing.
Patent GB-1170788-A (GB)
Title: Multiple Dynode Gain Control of Photomultipliers
Inventor: FARNSWORTH ROBERT PEARCE
IPC: H01J43/30
Filed: 1966-12-01
Abstract: 1,170,788. Gain-control circuits. HUGHES AIRCRAFT CO. 1 Dec., 1966 [24 March, 1966], No. 53785/66. Heading H3Q. [Also in Divisions G1 and H1] In a gain-control arrangement for a photomultiplifier tube, alternate dynodes 12, 14, 16, 18 and also the last dynode 21 are supplied with a fixed potential from a resistance chain 36, 39, 40, 41, 42, 44, 46 connected across the source of supply. The remaining dynodes 13, 15, 17, 19 are supplied via a resistance chain 64, 66, 68, 70, 72 from the gain control voltage source 58. A stronger control may be obtained by omitting the resistor 72 and connecting a constant potential source, e.g. a battery (84, Fig. 3, not shown), across resistors 64, 66, 68, 70 so that an equal variation is applied to all the dynodes 13, 15, 17, 19. Alternatively, where the gain-controlling potential is of an impulsive nature the resistance chain (64, 66, 68, 70, 72, Fig. 2, not shown) may be connected to the fixed supply source, gain-controlling pulses being applied via capacitors (76, 78) to the second and eighth dynodes (13, 19) and so via the resistance chain to the intermediate dynodes (15, 17). The Specification also describes an arrangement (Fig. 4, not shown) in which each resistor in both of the resistance chains is shunted by a capacitor, resistor 64 in the second chain being connected on the one hand to the positive supply potential via a capacitor (91) shunted by the collector to emitter path of a transistor (89), and on the other to an AGC source (94) via a diode (92). The transistor is normally non-conductive and the capacitor charged to a potential determined by the AGC source; application of an impulse to the base of the transistor causes it to become conductive, discharging the capacitor. The gain of the photomultiplier then changes suddenly, reverting to its original value slowly as the capacitor re-charges. Instead of individual dynodes, the arrangement may use sets of dynodes.
Patent GB-1388860-A (GB)
Title: Nuclear reactor pressure vessels
IPC: G21C11/08
Filed: 1971-11-19
Abstract: 1388860 Reactor pressure vessels BRITISH NUCLEAR DESIGN & CONSTRUCTION Ltd 20 Nov 1972 [19 Nov 1971] 53882/71 Heading G6C A reactor pressure vessel wall has, on its internal surface, a thermally-insulating lining 12 secured in position by cover plates 13 each of which is secured to adjacent cover plates by means of links 16 each of which comprises two attachment portions fixed rigidly to the cover plate and a connecting portion extending between the attachment portions, the connecting portion being deformable to permit thermal movements in the general plane of the cover plates but resistant to such movement normal to that plane. Some or all of the plates 13 are also retained by one or more studs 14, secured to the wall, each of which receives a nut 15 to compress the plate against the lining 12. The pressure vessel wall is of concrete and is additionally lined by a metal membrane 11. The links, of which many forms and arrangements are described, may connect each plate 13 to either four or eight adjacent plates. The links 16 comprise strip material which is secured edge-on to the cover plates to provide the required resiliency and rigidity in the respective directions mentioned. The natural frequency of resonant vibration of the links, due to the form and dimensions of the links, are chosen so as to avoid resonance with acoustic energy in the circulating gas coolant.
Patent GB-1493149-A (GB)
Title: Method and apparatus for enveloping pellets of foamed polystyrene suitable for producing lightened manufactured articles of cement and formulation for use with the method
IPC: B29B9/16
Filed: 1974-12-13
Abstract: 1493149 Coating pellets of foamed polystyrene M CATTANEO 13 Dec 1974 [14 Dec 1973] 54002/74 Heading B2E  Pellets of foamed polystyrene are provided with a resinous coating by a method comprising (a) continuously introducing a stream of the pellets into a mixing unit and transferring them to a zone in which they are wetted with a proportioned quantity of water and coating material comprising a resin or resin precursor, (b) continuously transferring the thuswetted pellets to a second zone into which inert filter is continuously metered and is brought into contact with the pellets and (c) continuously transferring the mixture to a third zone in which the coating material is dried and/or fused. The mixing unit may be a helical screw conveyor and the resin may be introduced transverse to the direction of travel. The resin may be a vinyl resin, e.g. polyvinyl acetate or an epoxy. The filter may be borium dioxide, diatonite or dolonite. Heat may be by I.R. heating.
Patent GB-1102789-A (GB)
Title: Improvements relating to acid anthraquinone dyestuffs and their use
IPC: C09B1/30
Filed: 1965-12-31
Abstract: The invention comprises acid anthraquinone dyestuffs of the formula <FORM:1102789/C4-C5/1> wherein each of R1 and R2 is a C1-C4\t alkyl group, R3 is a C1-C4 alkyl group and R14 is an arylenealkyl radical which is bound to the sulphonic acid group by means of a ring carbon atom and is optionally ring-substituted by C1-C4 alkyl or alkoxy, or halogen.  They may be obtained by reacting (1) an anthraquinone compound of the formula. <FORM:1102789/C4-C5/2> wherein X is a halogen, a hydroxyl group, a C1-C4 alkoxy group, NO2 or an amino group, with an aralkylamine of the formula <FORM:1102789/C4-C5/3> wherein R4 is an aralkyl group containing in a nucleus at least one exchangeable hydrogen atom and which may be ring-substituted by C1-C4 alkyl or alkoxy, or halogens, to form the corresponding 1- sec. alkylamino - 4 - aralkyl-amino-anthraquinone compound, and sulphonating this compound; (2) an anthraquinone compound of the formula <FORM:1102789/C4-C5/4> wherein Y is an acyl radical, with an aralkylamine of the above formula to form the corresponding 1-(N-sec. alkyl-N-acylamino)-4-aralkylamino-anthaquinone compound and, in either order, saponifying and sulphonating this compound; (3) an anthraquinone compound of the formula <FORM:1102789/C4-C5/5> wherein Z is a halogen, OH, C1-C4 alkoxy, NO2 or amino group, with a sec. alkylamine of the formula <FORM:1102789/C4-C5/6> to form the corresponding 1-sec. alkylamino-4-aralkylamino-anthraquinone and sulphonating this compound; or (4) an anthraquinone compound of the formula <FORM:1102789/C4-C5/7> with a sec. alkylamine of the second formula above to form the corresponding 1-sec. alkylamino - 4 - (N - aralkyl - N - acylamino) - anthraquinone and, in either order, saponifying and sulphonating this compound.  Specified radicals for Y are carbacyl radicals especially an alkanoyl radical or an aroyl radical, or alkylsulphonyl or aryl-sulphonyl radical.  Examples are given for the production and use of the dyes. They may be used for dyeing or printing of natural or synthetic polyamide fibres greenish blue or blue shades.
Patent GB-1491039-A (GB)
Title: Frequency characteristics-controlling device
IPC: H03G5/22
Filed: 1974-12-16
Abstract: 1491039 Frequency selective circuits TOKYO SHIBAURA ELECTRIC CO Ltd 16 Dec 1974 [14 Dec 1973 2 July 1974] 54314/74 Heading H3T A circuit having an adjustable frequency characteristic comprises a bridged-T network 27...30 connnected between the output and an inverting input of an amplifier 23 and having its common point connected either to a non-inverting input of the amplifier by a means 24 or to the output by a means 32, said means being a variable gain control circuit. The bridged-T network may comprise resistors and capacitors arranged as shown, or the capacitors and resistors may be interchanged. The use of a single means only is described with reference to Figs. 6, 8 (not shown). Various forms of gain control circuits are described, in which both means 24 and 32 are present and are variable. In one arrangement, Fig. 5, each means comprises a variable potentiometer 241 or 321 inter-coupling two transistor stages 245, 242, or 325, 322 the outputs of the two means being coupled to the bridged-T network via an emitter follower 40. The input stages 245, 325 and the cathode follower 40 may be omitted, Fig. 4 (not shown). Alternatively, Fig. 12 (not shown) the two controls may be merely variable resistors 101, 102 coupled to the common point by a further amplifier. In a still further modification Fig. 13 (not shown) one of the gain controls is a variable capacitor.
Patent GB-1279546-A (GB)
Title: Titanium nitride-titanium carbide compositions
IPC: C04B35/56
Filed: 1970-11-20
Abstract: 1279546 Hot pressed TiN-TiC E I DU PONT DE NEMOURS & CO 20 Nov 1970 [21 Nov 1969] 55290/70 Headings C7A and C7D A composition comprising in % vol. 10-90 TiN and 90-10 TiC having a density > 99% theoretical and an average grain size < 2 microns is made by hot pressing the powder mixture with particle size < 1 micron at 1750-1900 C. at 3000-6000 p. s. i. and rapidly cooling the compact. The powder mixture is wet milled at 90 r. p. m. for 5 days and after vacuum drying is stored under N 2 . The powder is charged into a graphite die under N 2  and vacuum hot pressed. The compact is cooled to a dull red heat in about 5 minutes to produce a Rockwell A hardness of 93-94 and a transverse rupture strength of 140,000-180,000 p. s. i. The compacts are suitable for use as crucibles and dies for molten metal and also for jewellery such as watch cases.
Patent GB-1429070-A (GB)
Title: Apparatus and method for preventing wear at a subsea wellhead asse mbly
IPC: E21B7/128
Filed: 1973-12-03
Abstract: 1429070 Boring earth REGAN OFFSHORE INTERNATIONAL INC 3 Dec 1973 [21 June 1973] 55840/73 Heading E1F A wellhead 13 including a stack of blow out preventers 27 has a device 42 for preventing wear on the drill pipe 39, the preventers or other parts of the wellhead. The wellhead is a sub-aqueous one and comprises a christmastree unit 24, coupling 33 and hanger support tool 34, the device being interposed between the tool and a ball joint and latch 40 for a marine riser 35. The device comprises rams 46 having removable wear pads 53 and guide plates 51, 52, the rams being hydraulically operated to engage the pads with the drill pipe.
Patent GB-1187729-A (GB)
Title: Disengageable Clutch Disc Coupling
IPC: F16D21/08
Filed: 1968-11-29
Abstract: 1,187,729. Friction clutches. FORD MOTOR CO. Ltd. 29 Nov., 1968 [12 Dec., 1967], No. 56667/68. Heading F2C. The friction disc 24, Fig. 1, and its hub 36 are disconnected from a power input shaft 44 of an automotive vehicle when the clutch pedal is depressed. The hub 36 is clutched to the shaft 44 by locking rollers 52 in recesses 50 of a rase 48 which is splined to the shaft 44. When the clutch pedal is depressed operating levers 18 disconnect the friction disc 24 in the usual manner, and subsequently fingers 70 on a sliding ring 68 move the rollers to a central disconnected position as shown in Fig. 2. The ring 68 is rotated slightly to centralize the rollers when projections thereon are forced into engagement with cams on the race 48. Clutching engagement of the rollers 52 in either direction is ensured by a drag ring 72 between the hub 36 and the ring 68.
Patent GB-1281550-A (GB)
Title: Apparatus for remote control in mining, more especially for a hydraulic mine roof support system
IPC: E21D23/00
Filed: 1969-11-21
Abstract: 1281550 Pressure indicators BERGWERKSVERBAND GmbH 21 Nov 1969 [22 Nov 1968] 56990/69 Addition to 1210015 Heading G1L In apparatus for providing a pneumatic signal corresponding to the hydraulic pressure of a hydraulic mine roof support for the remote control thereof in which a liquid pressure is converted into an analogue pneumatic signal the apparatus having a diaphragm 5 which is subject to a liquid pressure on face 5a and a constant pneumatic pressure appertaining to a pressure in a chamber 12 the other face 5b being closed off by the diaphragm 5, which chamber 12 possesses an outlet 19, for the analogue signal and a connection 16 to a constant pressure feed, thereto and from which chamber 12 there is a discharge bore 25 leading to atmosphere between the connection 16 and the outlet 19 underneath the diaphragm 5, which diaphragm 5 is resiliently supported such as by a plurality of spring washers 40, 41 having a progressive spring characteristic.
Patent GB-1372264-A (GB)
Title: Process for forming electroconductive silver images
IPC: H05K3/10
Filed: 1971-12-08
Abstract: 1372264 Electro-conductive photographic silver images FUJI PHOTO FILM CO Ltd 8 Dec 1971 [24 Dec 1970] 57125/71 Heading G2C A metallic electro-conductive positive silver image is formed at the surface of an emulsion layer and a black negative silver image is formed within the emulsion layer when the exposed silver halide emulsion layer containing silver halide grains having a mean grain size not exceeding 0.1 micron is developed with a developer containing at least one imidazole compound of the formula:- wherein R 1 , R 2 , R 3  and R 4  are each hydrogen, alkyl, hydroxyalkyl or alkenyl. The developer may also contain alkali-metal sulphides. The metallic images may be used in printed circuits or for ornamentation.
Patent GB-1145889-A (GB)
Title: Automatic bobbin exchange mechanism for two-for-one twisting machines
IPC: B65H67/06
Filed: 1966-12-22
Abstract: 1,145,889. Doffing and donning. PALITEX PROJECT-CO., G.m.b.H. 22 Dec., 1966 [24 Dec., 1965], No. 57431/66. Headings D1D and D1F. Means for replacing fully wound packages 23 by empty tubes 16 and empty bobbin carriers 9 by full bobbin carriers on a two for one twisting frame comprises a magazine capable of travelling along the frame and preferably consisting of a helical chute 30 on a carriage 28 and bobbin units 61 in the magazine formed by a prepared carrier 9 with an empty tube 16 on top. Adapted to travel with the magazine e.g. by being mounted on carriage 28 are two grippers adjustable in operational height and pivoting round a vertical axis, one of which takes the carriers 9 from the spinning positions to the magazine and vice-versa, and the other of which removes full tubes from the winding spindle and replaces them by empty ones. As shown the carriage 28 is stopped in alignment with a particular spindle in response to a yarn breakage, an empty feed bobbin or a full take-up package. The mandrel holding full package 23 is rotated into a vertical position so that it can be gripped internally by an expanding mandrel 56a (see also Fig. 2 not shown). Mandrel 56a is carried by a rotary hydraulic piston 51a on a head which is vertically movable on a hydraulically operated piston rod 51. The empty bobbin carrier 9, see Figs. 3 not shown, is engaged by an electromagnetic gripper (35) mounted to be movable vertically, horizontally and about a vertical axis by hydraulic pistons, is lifted, retracted and pivoted to a position where the associated full package can be placed therein by the mandrel 56a which has been moved to the appropriate position. The magnetic gripper then places the unit 62 on the chute to proceed to the lower end thereof. The magnetic gripper then picks up a full bobbin carrier 9 with an empty tube 16 therein from the upper part of the chute and places the carrier on its spindle; meanwhile the mandrel 56a picks up the tube 16 raises it to the winding station, places it on mandrel 14a which then pivots to the winding position. A11 the operations are controlled by an arrangement of electro-magnetic valves 41 to 46 controlling the flow of fluid from a pump 37, the valves being controlled by a programme switch mechanism 47. In an alternative form (Fig. 4 not shown) the magazine is carried on one carriage and the gripper mechanisms on another; thus the magazines can quickly be replaced by newly filled ones. The magnets holding the bobbin of the twist spindle stationary may be mounted in the balloon separators.