baber/WOPTO huggingface dataset:
Patent GB-1449415-A (GB)
Title: Turbine rotor blade cooling and sealing system
IPC: F01D5/32
Filed: 1974-08-27
Abstract: 1449415 Gas turbine rotors WESTINGHOUSE ELECTRIC CORP 27 Aug 1974 [7 Sept 1973] 37335/74 Heading FIT An axial-flow gas turbine rotor assembly comprises a disc 16 having generally axially extending grooves 18 containing blade roots 20, a chamber 24 beneath each root 20 being supplied with cooling fluid, each chamber 24 being closed at its downstream end by a sealing plate 38 overlaid by a further plate 44 which assists sealing and prevents axial movement of plate 38 and blade root 20. The plates 38 are retained in facing circumferential grooves 40, 41 and each is locked circumferentially by a tab 43 on the respective blade root 20 engaging a notch 42 in the plate. The plates 44 are retained in facing grooves 46, 48 in disc 16 and blade platforms 21 respectively. Each plate 44 has a tab 51 for locking engagement in a slot 50 within groove 48 and profiled edges 45, 57 for interengagement with adjacent plates 44. A modified final locking plate (55), Figs. 3, 4 (not shown) is retained in position between standard plates 44 by bolts (58, 59). The assembly sequence of the plates and blade roots on the rotor disc is described. The cooling fluid, e.g. air from a compressor associated with the turbine is supplied to chambers 24 via radial grooves 27 which act as centrifugal pumps. Leakage from the latter towards the working gas is prevented by a flexible band 28 engaging an annular groove 32 in fixed structure 12 and a facing groove 23 in disc 16. Projections 34 on roots 20 also bear a band 28. Further sealing is effected by projections 29' on platforms 21 slidably engaging fixed structure 29.
Patent GB-1044488-A (GB)
Title: Improvements in or relating to waste disposal apparatus
Inventor: SHEPHERD THOMAS CROPPER RYLEY
IPC: A61G9/02
Filed: 1964-09-14
Abstract: 1,044,488. Comminuting apparatus. T. C. R. SHEPHARD. Sept. 8, 1965 [Sept. 14, 1964], No. 37454/64. Heading B2A. Comminuting apparatus for disposal of hospital waste comprises a comminutor 1...4, means to deliver water to the apparatus so that waste is discharged with the water from the comminutor through discharge piping and means to introduce a jet of water into the discharge piping in the direction of flow of the comminuted waste to assist the flow. In operation, water from a supply 8, filtered at 9 and pumped by a pump 10, is supplied via a solenoid valve 12 to a T-junction 13. Part of the water is delivered via a pipe 14 to the comminuting chamber 1 or alternatively to the rotor 2. The remaining water is supplied via a lock shield valve 21 to a nozzle in one limb of the U-bend of a P-trap 19 which leads to the drain. The lock shield valve, or a restrictive orifice, is adjustable to set an appropriate ejection action to entrain waste and withdraw it from the apparatus. The pump 10 operates under control of a lid-operated microswitch, and a time switch controls the running time of the apparatus.
Patent GB-1396374-A (GB)
Title: Manufacture of lightweight concrete building units
IPC: B28B11/08
Filed: 1972-08-11
Abstract: 1396374 Moulding concrete UNITY INTERNATIONAL DEVELOPMENT CO Ltd 27 July 1973 [11 Aug 1972] 37602/72 Heading B5A A concrete building unit is moulded by the application of pressure to a semi-dry concrete mix in a mould wherein sand or other dry granular facing material, of a non-cementitious nature, is loosely and unevenly applied in excess of requirements to the outer surface of the mix in the mould before the application of pressure thereto, and'surplus material not adhering to or partially embedded in the unit is subsequently removed, e.g. by brushing or vacuum, to leave depressions of varying depth which impart to the surface a natural pitted appearance. The facing material may be discharged on to the mix from a hopper, the outlet from which is controlled by two continuously rotating rollers or different diameters formed with recesses in their circumferential surfaces; alternatively the material is applied to the mix through perforated, oscillated trays.
Patent GB-1354646-A (GB)
Title: Method of making a gas discharge display device
IPC: H01J17/49
Filed: 1972-08-16
Abstract: 1354646 Gas discharge display device NATIONAL CASH REGISTER CO 16 Aug 1972 [30 Aug 1971] 38132/72 Heading C1M [Also in Division H1] A method of making a gas discharge display device includes the steps of forming on a substrate (12, 26h, 44, 46) a first glass layer 50 having a required pattern of holes (48) therein, forming one or more further glass layers (54, 56) overlying the first layer, each further layer having an identical pattern of holes in registration with the holes in the first layer (to form the discharge cavities 48), each glass layer being formed in the desired pattern by deposition of glass-containing material (e.g. a slurry or paste of ground glass and volatile liquid vehicle) by silk screen printing, and the deposited layers subsequently being fired to fuse the glass contained therein. Each glass layer 50, 54, 56 may be of thickness 25-50 Á, to give a cavity of depth 150-400 Á. The glass-containing material may be heated to, e.g. 470‹ C. The substrate may be formed by coating the front glass plate 12 with an electrically conductive material 26h (e.g. tin oxide), and then with a first base glass layer 44 having a high lead oxide and low silica content, and a second base glass layer 46 with high silica and low lead oxide content. Rear plate 14 may similarly be coated with silver 26a, low silica glass 58 and high silica glass 60.
Patent GB-1362240-A (GB)
Title: Optical data recording systems
IPC: G03H1/26
Filed: 1971-08-16
Abstract: 1362240 Optical data recording SIEMENS A G 16 Aug 1971 [24 Aug 1970] 38280/71 Heading G2J Data is photographically recorded as a plurality of individual point images at selected points on a data carrier by operating a light deflector to direct a data carrying light beam to said selected points. The data is preferably binary in character a digital "1" being reposted as an image of a point light source. A laser beam 4 is focused on to a pin hole in a diaphragm 2. Light from the point source is then reflected from a plane mirror 1 rotatably mounted about two orthogonal axes. Thus for each of positions I, II, III light from an apparent source a, b, c is directed to a position on a record carrier 5 selected by a movable mask 7. There it interferes with a reference beam 6 to form a hologram. The mask 7 can be omitted. In such an embodiment the mirror 1 is located at 2f from a lens 8 which selectively images the point sources on the hologram record carrier 5, also located 2f from lens 8. In a further embodiment both mirror 1 and carrier 5 are respectively located at the principal force of an elliptical mirror. Two mirrors may be used, or one or two polygonal mirror drums, mounted for rotation about orthogonal axes. Alternatively acousto-optic or electro-optic deflectors may be used.
Patent GB-933111-A (GB)
Title: Improvements in or relating to agricultural mowing devices
IPC: A01D57/02
Filed: 1958-11-28
Abstract: 933,111. Reaping machines. A. B. ALLAN. Nov. 26, 1959 [Nov. 28, 1958], No. 38456/58. Class 6(3). A tractor-mounted mower comprises a reciprocating cutter pivotally mounted at one end on the tractor so as to be movable between a laterally-projecting, operative, position and an upright, inoperative, position, and a reel 9 comprising a rotary shaft 3 parallel to the cutterbar 2 and having means 11 to sweep cut crop rearwardly from the cutter, the reel being movable with the cutter between its two positions. The shaft 3 has radially-extending tubes 10 at its ends connected by serrated bars 11, the space between the tubes and bars being filled with wire-netting 12. The device is trailed behind the tractor T and is mounted on a beam 8 bolted, at 24, to the cutter-bar, the shaft 3 being journalled on a plate 5 mounted on an arm 7 pivoted to the beam 8 and resiliently supported by a spring 29 surrounding an arcuate guide 30. The shaft 3 is driven by a belt 15 from a ground-wheel 17 adjustably and resiliently mounted on vertical guides 19.
Patent GB-1485971-A (GB)
Title: Electrical connector members
IPC: H01R13/46
Filed: 1974-09-03
Abstract: 1485971 Two-part couplings ELFAB CORP 3 Sept 1974 [4 Sept 1973] 38480/74 Heading H2E A plurality of resilient contacts 31 of one of a pair of connector members 10 are press fitted into two parallel rows of holes 15 in a substrate 13 or 14 and covered by a housing 11 or 12; and the contacts of one of the members are connected to respective wires of an electric cable (not shown). The connector member joined to the electric cable is preferably provided with a cable hood (Fig. 11, not shown). The contacts are either formed with or without the neck 37 for wire wrapping on common support strips and then separated for use. The contacts are preferably formed with a stiffening rib (38) for secure mounting in the substrate, flanges 35 for prestressing the contacts against the housings and raised positions (26) to provide a snap-action on engagement of the connector members.
Patent GB-915243-A (GB)
Title: Refrigerator
IPC: F25D23/12
Filed: 1961-10-27
Abstract: 915,243. Refrigerators. GENERAL MOTORS CORPORATION. Oct. 27, 1961 [Nov. 18, 1960], No. 38520/61. Class 29. A refrigerator has a butter storage compartment containing a heater and openings or passages for the convection circulation of air over the heater and through the compartment. The refrigerator (Fig. 1, not shown) has a door 14 comprising an outer metal panel and an inner panel 23 of synthetic plastic material in which the butter compartment is formed. As shown, this compartment is divided into large and small chambers 41 and 42 respectively by a vertical partition 31 integral with a panel 32 closing the front of chamber 42. Chamber 42 contains an electric heater element 51 wound on an insulating strip 48 which is screwed to two studs 47 riveted to the partition. The heater is controlled by a switch 44 having an operating lever 46, and the electric supply is carried by wires 54 and 57 through one of the door hinges. The large chamber 41 contains a removable butter dish 60 having legs 62 and is closed by a door 29. Heated air from chamber 42 circulates by natural convection through an upper opening 36 in the partition 31, over the butter, under the butter dish, and back to chamber 42 through a lower opening 37. The heater 51 may have sections of different heating intensity controlled by the appropriate number of settings of the switch 44.
Patent GB-1004512-A (GB)
Title: Improved apparatus for measurement of the angular position of a rotatably mounted shaft
IPC: G01D5/241
Filed: 1961-10-27
Abstract: 1,004,512. Measuring angular displacement electrically. S. G. DEHN. Oct. 27,1961, No. 38599/61. Heading G1N. The invention relates to apparatus for measuring the angular displacement of a shaft by a capacitive tranducer comprising two series of electrodes, one mounted and rotor attached to the shaft and the other mounted on a stator, the stator electrodes being fed with polyphase A.C. voltages at symmetrical locations, and the rotor voltage being phase-displaced from one of the rotor voltages by n # degrees, where # is the mechanical displacement of the shaft from a zero position, and n is the number of electrodes in each series. Due to irregularities in manufacture the rotor output voltage contains harmonics of the energizing voltage, and these are eliminated by adding to the input or output voltage appropriate amplitudes of these harmonics. Transducer construction (Figs. 1, 2). A glass disc 01 (Fig. 1) is provided with two annular metal coatings 03, 04, insulated from each other, and each divided into a series of equal numbers of electrodes 09, 010 and 011, 012 by grooves 06, 07, 08. A second glass disc 02 is similarly provided with a single annular metal coating 05, divided by a groove 013 into two series of electrodes 014, 015, the number of electrodes in each series being equal. The two discs are coaxially disposed so that the electrodes form several series of capacitors varying cyclically with relative angular rotation of the discs. Circuitry (Fig. 3). The angular rotation of a shaft 70 is measured by two transducers 71, 72 of the above type, the latter being coupled to the shaft through 360: 1 gearing so that it rotates through 360 degrees for 1 degree displacement of the shaft. The rotor of coarse transducer 71 is fed with a 400 cps voltage from a 1 mps oscillator 73 and frequency divider 74. This input voltage and the output signal from the transducer are fed to a gate 80<SP>1</SP> which allows pulses from oscillator 73 to pass to a counter 84 during the interval between consecutive pulses from the input and output voltages, this count being indicative of the number of degrees of angular displacement of the shaft 70. A similar system associated with transducer 72 provides a count at 104 of additional 360 ths. of a degree. A network 110 containing frequency dividers 111, 112 and adjusting means 113, 114 produce voltage components having the correct frequency, amplitude and phase to neutralise the harmonic content in the output signal from transducer 72, and is added to the output from the transducer, as shown, or to its input signal. The Specification also describes a system for eliminating the effects of errors in the measuring signal having frequencies which are not integral multiples of the energizing voltage, the angular displacement measurement being made only at intervals determined by the known frequencies of the errors in the signal.
Patent GB-1200783-A (GB)
Title: Structural unit and process for its manufacture
Inventor: WIDMER HANS LEOPOLD
IPC: B32B13/04
Filed: 1967-08-23
Abstract: 1,200,783. Moulding structural units. FAVRE & CIE A.G. 23 Aug., 1967 [23 Aug., 1966], No. 38897/67. Heading B5A. [Also in Division E1] A structural unit consisting of at least two layers of cement-bonded materials of different density bonded together by steam pressure hardening without an extraneous bonding agent, is made by introducing the materials of the two layers separately into the mould, allowing the material to at least partly set and heating in the presence of water to set the unit. The cement-bonded material may be lightweight concrete, sand-lime brick, mortar or other concretes and may contain a natural or synthetic organic or inorganic fibre. The material of greater density is preferably introduced into the mould first and may be densified by vibration before or after the other layer has been formed. The setting may be carried out using warm water, low pressure wet steam, hot moist air or high pressure saturated steam, preferably at temperatures above 175‹ C. and at the corresponding elevated pressure.
Patent GB-1033560-A (GB)
Title: Refractory foamed product
IPC: C04B38/06
Filed: 1963-10-03
Abstract: A refractory foamed product is made by mixing together (a) a foamable thermosetting resin, (b) a blowing agent, (c) a pulverulent inorganic oxide, and (d) a fluxing agent for (c), and curing.  Resin (a) comprises a polyester of an a ,b -ethylenically unsaturated dicarboxylic acid. Blowing agent (b) may be a gas, a volatile substance, or an alkali metal carbonate or bicarbonate and an acid, or acid anhydride and water.  Oxide (c) comprises an oxide of Zr, Ti, Th, V and/or Al.  Flux (d) may be a fusible compound of a metal of Periodic Group I or II.  Surfactants and foam stabilizers may also be added.  The product may then be heated to produce a foamed char containing embedded oxide particles, and may then be further heated to consume the organic material and to coat the oxide particles with a fused vitreous coating formed from the inorganic oxide and the fluxing agent. Refractory, glass, or metallic fibres may be incorporated.ALSO:A refractory foamed product is made by mixing together (a) a foamable thermosetting resin, (b) a blowing agent, (c) a pulverulent inorganic oxide, and (d) a fluxing agent for (c), and curing.  Resin (a) comprises a polyester of an a ,b -ethylenically unsaturated dicarboxylic acid.  Blowing agent (b) may be a gas, a volatile substance, or an alkali metal carbonate or bicarbonate and an acid, or acid anhydride and water.  Oxide (c) comprises an oxide of Zr, Ti, Th, V, and/or Al.  Flux (d) may be a fusible compound of a metal of Periodic Group I or II. Surfactants and foam stabilizers may also be added.  The product may then be heated to produce a foamed char containing embedded oxide particles, and may then be further heated to consume the organic material and to coat the oxide particles with a fused vitreous coating formed from the inorganic oxide and the fluxing agent. Refractory metal, or metallic fibres may be incorporated.
Patent GB-1019667-A (GB)
Title: Method of manufacturing articles resembling porcelain from blast furnace slag
IPC: C03C10/00
Filed: 1962-10-16
Abstract: Porcelain-like articles are formed from blastfurnace slag by adding a nucleating agent such as chromic oxide, manganous oxide, calcium fluoride, sodium fluoride, phosphoric acid, and/ or titanium oxide, and a glassifying material such as silica sand, felspar, limestone, magnesite, dolomite, or soda ash so as to give a composition more than 95% which is formed by 40-70% silica, 5-15% alumina, 15-35% lime, 2-12% magnesia, 2-12% sodium oxide, and 0.5-10% nucleating agent, melting the mixture, moulding, and heating to cause crystallization.  The mixture is melted at 1300-1400 DEG  C., moulded, and then heated to 900-1100 DEG  C. and maintained at this temperature for 1-3 hours.
Patent GB-1484895-A (GB)
Title: Polarization headlamp
IPC: G02B5/30
Filed: 1974-09-09
Abstract: 1484895 Vehicle headlamps ROBERT BOSCH GmbH 9 Sept 1974 [10 Sept 1973] 39233/74 Addition to 1421404 Heading F4R In a motor vehicle polarization headlamp an interference polarizer 12 includes a number of partial polarizers 12a-12d symmetrically disposed about the optical axis each making an angle of 45 degrees therewith, the partial polarizers alternating, away from the optical axis with reflective layers 14a-14d, wherein the projections of the partial polarizers and the reflective layers are aligned without a gap in the direction of the optical axis and are coincident to form a rectangle in the direction perpendicular to the optical axis, and an absorption polarization filter P is provided after the interference polarizer in the emitted beam direction. The parallel rays of light from the parabolic reflector 10 incident on the partial polarizers 12a-12d, either directly or after reflection from the rear of reflective surfaces 14a, 14b, are split into a reflected and a transmitted polarized beam, the electric vectors of which are at right angles to each other. The polarized beam, either emitted directly or after a further reflection at the surfaces 14a-14d, thus has zones having different directions of polarization, as indicated in the figure, the appropriately oriented half-wavelength films F 1  ... F 5  being provided to unify the direction of polarization of the beam before it enters the absorption polarization filter P. In a modification, the partial polarizers, the reflective layers, the half-wavelength films and the absorption polarization filter are all immersed in a fluid or self-hardening solid immersion medium, Fig. 3 (not shown). In a further embodiment, Fig. 2 (not shown), a mask is provided which prevents light from reaching the polarizers which has not been reflected from the reflector 10.
Patent GB-1066824-A (GB)
Title: A decoding circuit with non-linear companding characteristics
IPC: H03M1/00
Filed: 1963-10-08
Abstract: 1,066,824. Electric selective signalling systems. NIPPON ELECTRIC CO. Ltd. Oct. 8, 1963 [Oct. 11, 1962], No. 39596/63. HeadingG4H. A digital-to-analogue converter of the type in 11 which a reference voltage is progressively attenuated by a group of series-connected attenuators each switchable by a corresponding input bit so as to have one of two (or one of n if n-state bits are used) different attenuating factors is characterized in that the switching of each attenuator so as to change its attenuating factor is effected by bringing a different one of two (or of n) specific points to a reference potential. This arrangement is said to reduce errors such as D.C. drift. In the embodiments described, all of which have a logarithmic characteristic, the attenuators consist of passive elements and the reference voltage, to which selected points are brought, is earth. In a first embodiment, Figs. 4, 5, a resistive attenuator 31, 32, 33 has either the end of resistor 31 or the end of resistor 33 brought to earth by a switch 20, Fig. 4, which may be constituted by two transistors 360, 361, Fig. 5. Other embodiments (Figs. 7, 8 and 9, not shown) use more complex resistive attenuators and a final embodiment (Fig. 10, not shown) uses both resistors and inductances. The Specification also includes design data on how to match input and output impedances and how to approximate to a logarithmic characteristic.
Patent GB-1168106-A (GB)
Title: Improvements in or relating to Granular Materials containing Anti-Caking Powders
Inventor: SUTTON FRANCIS WILLIAM ANTONY
IPC: C05G3/30
Filed: 1967-08-30
Abstract: 1,168,106. Inhibiting caking. ENGLISH CLAYS LOVERING POCHIN & CO. Ltd. 23 Aug., 1968 [30 Aug., 1967], No. 39633/67. Heading C2C. [Also in Division C1] Urea is coated by tumbling with 0À5-2% of a finely divided calcined kaolinitic clay. Small dry lumps of china clay may be heated to 650-700 C. for 1 hr. and then ground to produce a coating agent of which at least 40% has a particle size smaller than 2 Á.
Patent GB-978008-A (GB)
Title: Improvements in tube fittings
Inventor: FEWELL PETER WILLIAM CHARLES
IPC: F16L19/06
Filed: 1962-10-19
Abstract: 978,008. Pipe couplings. HAZELOCK Ltd. Oct. 14, 1963 [Oct. 19, 1962], No. 39744/G2. Heading F2G. A fitting for attachment to a rigid tube 10 comprises a rigid sleeve 1 having an elastic O - ring 13 accommodated in an internal circumferential recess and an external screw-thread 11 at one end, a nut 2 having an internal thread at one end to fit the thread 11 and a converging conical face internally at its other end, also an annular locking ring 4 adapted to be compressed between the coned face of the nut and the tube 10 to provide a mechanical lock on the tube. The ring 4 may be an annular coiled spring or a rubber 0-ring. The sleeve 1 and nut 2 are of moulded plastic. Instead of having the externallyscrewed spigot shown in the Figure, the sleeve 1 may be screwed externally at both ends as at 11 to receive a second nut 2 and ring 4 for joining two pipes (Fig. 1, not shown). Specification 714,028 is referred to.
Patent GB-1133084-A (GB)
Title: Power plants
Inventor: TURRELL JOSEPH FRANCIS
IPC: G21D3/04
Filed: 1965-09-17
Abstract: 1,133,084. Nuclear power plant. ENGLISH ELECTRIC CO. Ltd. 15 Sept., 1966 [17 Sept., 1965], No. 39781/65. Heading G6C. In a nuclear power plant, heat exchangers, heated by the reactor, apply steam to both a main turbine and an auxiliary turbine which drives the exchanger feed pump and the electric generators supplying the plant auxiliary apparatus. A stand-by oil-fired boiler provides the steam supply in the event of failure of the main reactor. At the commencement of an emergency, the auxiliary turbine continues to draw residual steam from the heat exchangers and maintains the electrical supply to the supply pump of the oil-fired boiler.
Patent GB-1190496-A (GB)
Title: Improvements in or relating to Waveguide to Coaxial Transitions.
Inventor: BOULD RODERICK EDWARD NEW
IPC: H01P5/103
Filed: 1968-08-21
Abstract: 1,190,496. Parametric amplifiers. MARCONI CO. Ltd. 17 April, 1969 [21 Aug., 1968], No. 40015/68. Heading H3B. [Also in Division H1] The bias supply of a varactor diode 8, forming part of a parametric amplifier, is fed through the inner conductor 2a of coaxial line 2 and the " doorknob " 5 of an impedance transformer, the latter being insulated from waveguide 1 by a layer 6 of dielectric material. The diode is mounted in a signal cavity 4 and is coupled by the doorknob transformer 5 to a circulator 13 of which branches 14, 15 provide respectively the input and output ports of the amplifier.