baber/WOPTO huggingface dataset:
Patent GB-1404501-A (GB)
Title: Reheat fuel systems for gas turbine engines
IPC: F02C9/26
Filed: 1972-01-04
Abstract: 1404501 Gas turbine jet engine - reheat fuel control ROLLS-ROYCE (1971) Ltd 5 Dec 1972 [4 Jan 1972] 217/72 Heading F1J The invention relates to a re-heat fuel system for a gas turbine jet engine which system is controlled conjointly with a variable area nozzle control system. The engine shown comprises a turbine 16, a reheat fuel system 18 and a variable area nozzle 20 controlled by actuator 38. Reheat control is by means of a pilot lever 22 which is connected to a schedule 24 to which signals such as engine speed and compressor pressure are supplied at 26, 28, the resulting signal passing through line 30 to an actuator 32 which opens fuel valve 34. The actual fuel flow through valve 34 is sensed and fed through line 46 to a comparator 50 where it is compared with the schedule flow, any flow error producing a flow error signal which causes the actuator 32 to adjust the fuel valve 34 to reduce the flow error. The actuator has limits set on its velocity or position which limits are calculated by a device 36 which operates in dependence on turbine pressure ratio error. The variable area  nozzle actuator 38 is controlled by a control 40 which also acts to maintain the pressure ratio P3/P6 across the turbine substantially constant. The actual pressure ratio is determined by a sensing unit 44 and this is compared in a comparator 52 with the desired pressure ratio, any resulting pressure ratio error being fed to the nozzle actuator control 40 which causes the nozzle area to be adjusted to reduce the pressure ratio error. A bias term is added to the pressure ratio error signal supplied to the nozzle actuator control 40, the bias term being computed from the reheat fuel flow error in a bias term control 42. The bias term is proportional to the reheat fuel flow error and when added to the pressure ratio error signal produces a higher nozzle actuation signal. As the fuel flow error approaches zero, the bias term to the nozzle loop is removed.
Patent GB-309063-A (GB)
Title: Improvements in secret electric signalling systems
IPC: H04K1/04
Filed: 1928-01-03
Abstract: 309,063. Standard Telephones & Cables, Ltd., (Bell Telephone Laboratories, Inc.). Jan. 3, 1928. Telophone currents, inverting and transposing frequencies of.--For obtaining secrecy in telephone and like transmission systems, the original band of waves is fed in parallel to a number of modulators so as to shift the band to different but overiapping frequency positions, and, the shifted bands are then passed through filters having identical cut-off frequencies. Fig. 2 shows diagrammatically the four bands A - - D, each of speech frequency range, and each shifted to a different extent, so that the overlapping portions, each representing a different section of the original band, may be selected by identical filters having cut-offs represented by the horizontal lines E, F. The electrical diagram, Fig. 1, shows the line L1 branched to four filters F1 each passing the whole speech band, and leading to four modulators MA - - MD, by which the frequencies are raised to different extents, as indicated in Fig. 2. The shifted bands are then passed through identical but separate filters Fe, each adapted to pass the band EF. Fig. 2. These sub-bands are then interchanged and manipulated in the secrecy apparatus S and are passed to demodulators DA - - DD, each of which can have its carrier set at either of two frequencies, all as disclosed in Specification 299,915. The subbands are thus brought back within the speechfrequency range, and pass through filters F2, arranged to pass the whole speech range, and through filters FA - - FD, arranged to pass different sections of the speech frequency range, to a line L2 where they are re-combined to form a scrambled mixture of the sub-bands which is not intelligible in an ordinary receiver. The scrambled mixture may be re-constituted into intelligible speech currents by passing it through an apparatus similar to that shown in Fig. 1. The filters F1, F2 serve to prevent the carrier currents from the respective sources OA - - OD, OA<1> - - OD<1>, from reaching the other channels. The secrecy system may be combined with a two-way repeater as described in Specification 299,915. Resistances R at the input end of the secrecy apparatus are arranged to match the impedance of the channel circuits with that of the line L1. A compensating filter CF is arranged at the output end, for improving the efficiency of the band filters FA - - FD near their cut-off limits.
Patent GB-800289-A (GB)
Title: Improvements in or relating to the manufacture of self-sealing bags, envelopes and like containers
Inventor: BONSOR DAVID VICTOR
IPC: B31B23/00
Filed: 1957-01-03
Abstract: 800,289. Making bags. DICKINSON & CO., Ltd., J. Jan. 3, 1957, No. 275/57. Addition to 701,658. Drawings to Specification. Class 94(2). The bag making method of the parent Specification is modified in that the flat tube from which the bag length are cut is formed from two or more joined webs. The webs may differ as to transparency, thickness, &c. In one embodiment two webs each have notches cut in one edge corresponding to the notches 5 of the web in the above Specification, and their other edges are overlapped and joined by adhesive. The web is then folded to form the tube, the notches coinciding to provide openings corresponding to apertures 6. The notches in one web may be deeper than those in the other. In another embodiment, three webs are joined, the outer webs being semi-transparent and the inner narrower web transparent. Notches are cut in the free-edges of the outer webs.
Patent GB-1329811-A (GB)
Title: Method of forming electrode for alkaline cell
IPC: H01M4/29
Filed: 1971-01-04
Abstract: 1329811 Electrolytically producing Cd and Ni and their hydroxides WESTERN ELECTRIC CO INC 4 Jan 1971 [7 Jan 1970 9 Jan 1970] 340/71 Heading C7B [Also in Division H1] Cadmium or nickel hydroxide is introduced into a porous structure, e.g. a sintered Ni electrode, using an acid electrolyte at a temperature between 85C. and boiling point. The electrolyte contains Cd or Ni ions, and chromic acid, chlorate, permaneanate or nitrate ions. Sodium or potassium nitrites are used as a supporting electrolyte and nitric acid and potassium hydroxide may be used to adjust the pH. Counter electrodes of Pt, Ni or stainless steel may be used. The filled electrode may be subsequently treated electrolytically with an alkaline solution to reduce the hydroxide to the metals. The electrolytic impregnation may be carried out in two or more cycles.
Patent GB-142061-A (GB)
Title: Improvements in means for retarding the descent of shutters, curtains and the like
IPC: E06B9/82
Filed: 1920-01-05
Abstract: 142,061. Gibson, A. L., (Kinnear Manufacturing Co.). Jan. 5, 1920. Fire-proof curtains and shutters.-A device for retarding the descent of fire-proof curtains, shutters, &c. comprises a toothed wheel driven by the unwinding of the shutter, and an oscillating member having an element adapted to engage the toothed wheel intermittingly to allow interrupted descent of the shutter, the toothed wheel being normally held against rotation by a fusible or other device. In the construction shown in Fig. 1, the toothed wheel 9 is secured to the roller shaft 7 of the shutter, and the oscillating member consists of a ring 10 pivoted on a pin 11 and provided with two pivoted spring-controlled dogs 13, which are adapted to engage the teeth of the wheel 9 intermittingly and alternately when the oscillating member 10 is released from a retaining-latch 16 pivoted at 17. The latch 16 is normally held in engagement with the member 10 by a chain 18 having a fusible link 23, one of the dogs 13 locking the wheel 9. In a modification, the toothed wheel 9 is mounted on a separate shaft parallel to the roller shaft and geared thereto. In a further modification, in order to ensure slowness of descent, the toothed wheel 9 and oscillating ring 10 are duplicated, the teeth of the wheels and also their respective co-operating dogs being alternated in position.
Patent GB-878874-A (GB)
Title: Improvements in electrical signalling circuits suitable for the automatic control ofmachining operations
Inventor: HIGHFIELD FRANK WILLIAM WOOTTO
IPC: G05B19/06
Filed: 1958-01-03
Abstract: 878,874. Sequential switching systems. AUSTIN MOTOR CO. Ltd., and HIVAC Ltd. Jan. 1, 1959 [Jan. 3, 1958], No. 346/58. Class 38 (4). In a control system for preventing the movement of workpieces on, say, a transfer machine, to the next station until all the machining operations have been completed, combinations of unidirectional signals comprising rectified halfwaves of A.C. of the same polarity displaced 180 degrees are transmitted over a single pair of conductors to control the selective operation of gas discharge tubes, which control the advance of the workpiece. The signals are dependent on the position of the work heads, contacts TLC(2) -TLC(17), Fig. 2, being closed in the retracted position and other contacts BLC(2)-BLC(17) being closed in the extended position, the contacts being respectively supplied with halfwave signals 45H1, 45H2 of the same polarity 180 degrees apart, which are fed to coincidence circuits formed by rectifiers MRS(2)-MRS(17) and MRP(2)-MRP(17). The contacts are also connected to indicator diode tubes NTL(2)- NTL(17). When all the TLC contacts are closed, a tube TTLS fed with positive pulses of correct phase is fired which in turn fires tubes NTLS1-NTLS4, the first three of which are connected to corresponding leads TLS1-TLS3 of Fig. 1. When all the operations at, say, the first station have been completed, signals are applied to the rectifiers MR1-MR6 which cause the stepping of a rotary switch S1, S2 on to the next position, hence energizing a circuit TF whereby the workpiece is moved on to the next station. The system is arranged so that should two supplies, viz. 45H1, 45H2 become connected together, the machine is shut off and an alarm given. A timing device can be incorporated to control the sequential starting of motors driving the work-heads.
Patent GB-1077632-A (GB)
Title: Improvements relating to high temperature flame spraying of powdered materials
Inventor: KUDELKA VITEZSLAV
IPC: B05B7/20
Filed: 1964-01-03
Abstract: A flame spray gun comprises a nozzle (2) Fig. 1 (drawings not shown) and a mixer unit (1) provided with passages to the nozzle for a combustible gas and a non-combustible gas conveying powder material and a valve controlled by-pass supplying combustible gas to the non-combustible gas passage.  Combustible gas e.g. acetylene or coal gas and oxygen are supplied to a mixing chamber (9), through conduits (7), (8) (Figs. 1, 3); conveying gas e.g. air or N2 and propelling gas (air) are supplied through conduits (4a), (3). Conduit (4a) opens into a mixing chamber (6) which can be supplied with combustible gas from conduit (7) through a by-pass (10) controlled by a valve (11). The material issues from outlets (13) Fig. 2 connected to chamber (6), meets burning gas from outlets 14 connected to chamber 9 and is blown against the substrate by the propelling gas issuing from outlet (15) connected to passage (3).  Mild steel may be coated with self fluxing alloys containing: ..%.%.% .Ni.13.4.14.5.2 .Co.46.7.50. .Cr.19.7.21.1.16 .B.2.6.1.67. .W.13.5.8.9. .Si.3.1.2.78. .C.1.003.1.11.0.2 .Fe...81.8ALSO:A flame spray gun comprises a nozzle (2) Fig. 1 (drawings not shown) and a mixer unit (1) provided with passages to the nozzle for a combustible gas and a non-combustible gas conveying powder material and a valve controlled bypass supplying combustible gas to the non-comubustible gas passage.  Combustible gas e.g. acetylene or coal gas and oxygen are supplied to a mixing chamber (9), through conduits (7), (8) (Figs. 1, 3); conveying gas e.g. air or N2 and propelling gas (air) are supplied through conduits (4a), (3).  Conduit (4a) opens into a mixing chamber (6) which can be supplied with combustible gas from conduit (7) through a bypass (10) controlled by a valve (11).  The material issues from outlets (13) Fig. 2 connected to chamber (6), meets burning gas from outlets 14 connected to chamber 9 and is blown against the substrate by the propelling gas issuing from outlet (15) connected to passage (3). Mild steel may be coated with self fluxing alloys containing: ..%.%.% .Ni.13.4.14.5.2 .Co.46.7.50. .Cr.19.7.21.1.16 .B.2.6.1.67. .W.13.5.8.9. .Si.3.1.2.78. .C.1.003.1.11.0.2 .Fe...81.8
Patent GB-1301872-A (GB)
IPC: F15C5/00
Filed: 1970-01-05
Abstract: 1301872 Fluidic modules BAILEY METER CO 5 Jan 1970 [24 March 1969] 443/70 Heading G4P A fluid circuit module comprises a stack of plates, Fig. 4, various of the plates having passages forming fluidic elements and interconnecting ducts which define a fluidic circuit. As described, the module comprises a base-plate 28 having passages for fluid inlet and outlet whose ends 48 communicate with ducts in a mounting plate to which the base-plate 28 is secured. The other ends of the passages are connected via apertures in plate 34 and sealing plate 70 with ducts in plate 80 which determine the way in which fluidic elements in plate 150 are interconnected. The fluidic elements are vented to atmosphere via apertures 122, 124 in plate 110 and notches 41 in plate 100. The plates are clamped to base-plate 28 by bolt 37, the apertures through which the bolt passes being of sufficient size that power fluid can flow through them to the fluidic elements' power jet nozzle. Each fluidic element, Fig. 5, operates as a NOR gate and has a power jet-forming passage 202. In the absence of control signals at inputs 216a, 216b or 220a, 220b the laminar jet passes to outlet 208. When a control signal is present the jet becomes turbulent and attaches to wall 222 or 226 to exit at 224 or 228.
Patent GB-981235-A (GB)
Title: Spinning of bast fibres
Inventor: DERRETT-SMITH DONALD ALFORD
IPC: D01H5/18
Filed: 1961-01-05
Abstract: Flax or hemp fibres are obtained by a process which includes, instead of biological retting, subjection of the straw, in the presence of water, to a temperature which is sufficiently high to cause hydrolysis of the material binding the fibre to the woody core to an extent which renders the latter readily separable by subsequent mechanical treatment.  As described, harvested de-seeded flax is placed in a kier and water, which may include a wetting agent and be rendered mildly alkaline e.g. by addition of sodium carbonate, is added.  The liquor with the water soluble matter which has been removed from the straw is withdrawn after one hour, the kier is scaled and the straw is subjected to saturated steam at superatmospheric pressure therein for forty minutes followed by drying with a circulation of hot air therethrough.  The straw is removed and converted into rove by successive treatments of switching or breaking, hackling and drafting, and wound under low tension.  The rove is bleached by boiling the wound bobbins in an alkaline solution for one hour, running off the liquor, rinsing, treating with bleaching liquor(s) and washing.  The bobbins are mounted in the creel of a wet, controlled draft, spinning frame and the rove is spun into yarn which is then dried and rewound.  The draft may be controlled by means of an apron system or an adjustable breast beam deflecting the rove from a direct path between the nips of the drafting rollers, Figs. 1 and 2 (not shown).
Patent GB-283731-A (GB)
Title: Improved machine for kneading and shaping bakers' rolls and the like
IPC: A21C7/01
Filed: 1927-01-07
Abstract: 283,731. Heckel, E., and Krause, P. Jan. 7, 1927. Rolling-machines. - A machine for shaping bakers' rolls comprises a pair of endless bands 15, 20 driven in opposite directions with periodic reversal. The band 20 passes around rollers 21, 24 upon the axles of which are levers 26 adapted to depress the upper run of the band 15 at intervals. Kneading-fingers 25 are provided on the lower run of the band 20. In operation, a divided dough portion is fed through a hopper 13 and flattened by rolls 12 and falls upon the band 15 which carries it to the lift into the range of the kneading fingers 25, while depressed by the levers 26 ; the movements of the bands then reverse and the band 15 rises to bring the dough into engagement with the fingers 25 which carry it further to the left, the rounded dough being finally discharged down a shoot x.
Patent GB-189679-A (GB)
Title: Improvements in and relating to method of producing a composite laminated structure
IPC: B27D1/04
Filed: 1922-01-06
Abstract: 189,679. Atwood, H. N. Jan. 6, 1922. Laminated wood. - A composite laminated block or sheet is made by pressing together under heat layers of wood 1 alternating with layers of rubber 5. The wood layers are previously soaked in or coated with rubber solution, and the rubber sheets are reinforced by sheets of wire netting or like material 3 rolled in. The strands of these sheets and the grain of the wood sheets are disposed crosswise.
Patent GB-1335171-A (GB)
Title: Tapping tee
IPC: F16L47/34
Filed: 1972-01-06
Abstract: 1335171 Tapping tee R & G SLOANE MFG CO Inc 6 Jan 1972 [18 Jan 1971] 544/72 Heading B3C [Also in Division F2] A tapping tee 10 comprises a body 12 having a drive socket 14 and at least one outlet socket 16 connected to the drive socket at 18, and a screw 32 having an annular cutter 36 connected thereto which is adapted to cut a hole in the pipeline M and retain the coupon, the cutter having a tapered outer surface 40 which serves as a seal for engagement with the hole in the pipeline. A saddle 22 on the preferably plastics tee is solvent welded, fusion bonded, or clamped, to the plastics pipeline M, and a sealing cap 28 is provided. Screw 32 is rotated so as to feed the metal cutter, and a stop 42 limits the feed and retraction of the cutter. The pitch of the thread on screw 32 and in socket 14 are different so as to provide a fluid-tight fit.
Patent GB-112507-A (GB)
Title: Improvements relating to Electric Lamp Holders.
Inventor: ENGELKE WILLIAM
IPC: F21V19/02
Filed: 1917-01-11
Abstract: 112,507. Engelke, W. Jan. 11, 1917. Electric-lamp lanterns.-To allow of axial adjustment of an electric lamp bulb, an elastic slotted socket 2 is tapered externally and is compressed on to the lamp-cap 1<a> or an attached part by a fixed tapered seating 9 into which the socket is drawn by a nut 10 on its rear end. A reflector may be attached to the seating 9. The socket 8 may be threaded internally, or, when the filament axis has to be kept vertical, both the cap and the socket may be plain.
Patent GB-673175-A (GB)
Title: Scrubbing and like domestic brushes
IPC: A47L13/10
Filed: 1950-01-10
Abstract: 673,175. Brushes; stocks; brush handles. ROSSEL G. Jan. 10, 1950, No. 614/50. Classes 19 and 61 (i). A scrubbing or like domestic brush of the kind comprising a resilient brush-head bearing bristles on its under-side and provided on its upper-surface with an undercut recess to receive removably a rigid holder adapted to be secured to the end of a brush handle, is characterised in that the holder is made of metal and has on its underside longitudinal- and cross-ribs serving as reinforcements therefor. As shown, the scrubber 'comprises a bristle bearing elastic head a having on its upper face a peripheral slot e, formed by an inwardly extending lip f, in which the rim of the metal holder c is held fast by the resilience of the elastic head. The cross-ribs h and longitudinal ribs (not shown) on the underneath of the holder bear on the upper surface of the head. The holder c is provided, preferably integrally, with a tube i adapted to receive a handle.
Patent GB-882219-A (GB)
Title: Improvements in or relating to electrical pulse counting apparatus
IPC: H03K21/00
Filed: 1959-01-08
Abstract: 882,219. Electronic counting - apparatus. WESTINGHOUSE ELECTRIC CORPORATION. Jan. 8, 1959 [Jan. 17, 1958], No. 730/59. Class 106 (1). A pulse counting circuit comprises a number of bi-stable stages in which each stage controls the succeeding stage through a circuit having a predetermined time of operation. The circuit is made up of a number of NOR elements, one of which is shown in detail in Fig. 3, as comprising a transistor which is made to conduct when a positive pulse is applied to any of the resistors 75-78. When the transistor conducts the NOR element is said to be off. Initially all the left-hand elements, Fig. 1, are on and the righthand elements off, the centre input of element 32 being marked at this time with a low potential. A pulse on lead 60 turns element 30 off and element 32 on and through a time-delay circuit 31, 33 marks the centre input of element 38 with low potential. The circuit therefore steps at each pulse. When the ring-counter is full an output pulse is applied to terminal 68 to effect transfer and at the same time the several stages are reset to initial condition. Specification 856,853 is referred to.
Patent GB-1151472-A (GB)
Title: Improvements in or relating to Valves
IPC: F16K31/08
Filed: 1967-01-05
Abstract: 1,151,472. Blasting. WHEELABRATOR CORP. 5 Jan., 1967 [21 Jan., 1966], No. 765/67. Heading B3D. [Also in Divisions B8 and H1] A valve, for use in the handling of materials which are in particle form and which comprise a substantial portion of magnetic particles, comprises a flow through passage, a permanent magnet, the polepieces of which are located within said passage with sufficient space for the movement of said particles through said passage being defined between said polepieces and the interior surface defined by said passage, said polepieces being adapted to attract said particles and to thereby impede movement of the particles through the passage, an electrical coil located adjacent said magnet, means for energizing said coil and means for varying the input to said coil for thereby varying the influence of said magnet on said particles. A valve for controlling the feed of abrasive, e.g. a mixture of steel shot and sand, to the centrifugal wheel of a machine for cleaning metal surfaces, e.g. steel strip, comprises, Figs. 1 and 2, a housing in two parts 16, 18 secured together by flanges 24, the housing being mounted in association with the wheel housing by flanges 20. Wings 30, 30 extending inwardly from the part 16 are integral with a conical cap member 32. Wings 38, 38 extending inwardly from the part 18 are integral with a conical cap member 36. Disc permanent magnets 46 are stacked between polepieces 40, 42 secured to the cap members 32, 36. The magnets and polepieces are surrounded by a coil 48. An opening 54 at the junction of the parts 16, 18 communicates through passages 52, 56 in one wing 30 with a passage 58 in the polepiece 40. Both the leads to the coil 48 may be passed through the passages, or only one lead, similar passages being provided in the other wing 30. When the coil 48 is energized to offset the field of the magnets 46, material from the inlet 12 passes through the annular passage 50 to the outlet 14. When the coil energization is reduced, the flow of material is retarded or stopped. The coil 48 is preferably energized from a D.C. source; a volt meter can be calibrated to read pounds of abrasive flow per minute. The cap members 32, 36 can be made of abrasion-resistant, non-magnetic and good heatconducting material, preferably a cast mixture of fine sized silicon carbide and epoxy cement; they protect the polepieces 40, 42 and dissipate heat away from the coil by transferring it to the abrasive. Another embodiment comprises, Fig. 7, polepieces 76 extending into a flow through passage 72 defined by a cylinder 70 preferably of non- magnetic stainless steel. The polepieces are joined by a permanent magnet 80 surrounded by a coil 82. This form is used to control the flow of hot steel abrasives during manufacture. Means may be provided for cooling the coil.