baber/WOPTO huggingface dataset:
Patent GB-641498-A (GB)
Title: Improvements relating to electrical bridge networks
IPC: G01B7/00
Filed: 1947-10-31
Abstract: 641,498. Bridge circuits for measuring. COSSOR, Ltd., A. C., and WHITELEY, J. W. Oct. 31, 1947, No. 29126. [Class 37] A bridge has two arms 1, 2, Fig. 2, consisting of coupled coils, the third and fourth arms Z1, Z2 being connected between the ends of the arms 1, 2, as shown ; the stray capacitance between A and earth is in shunt with the input across Z4 and so introduces no error, while at balance, the point B is at earth potential and again stray capacitance between B and earth produces no error. The unknown impedance Z1, Fig. 3, may be connected to the bridge by screened leads 15, 16 ; the supply to the bridge is applied at terminals 6, 7; the bridge may be enclosed in an earthed screen; it is shown that variations in impedances Z3, Z4 have no effect at balance. Where the reactance of conductor 15 and the resistance of the screens 17, 18 are not low enough to render the variations of Z3, Z4 of no significance, condensers 20, 21 are inserted as shown in Fig. 4. As shown in Fig. 5, a capacitance 38 mounted on a rotating shaft (not shown) is coupled by slip-rings to a screened cable to the bridge comprising coupled coils 1, 2 and balancing capacitance 22 in shunt with any one of fixed capacitances 23 ... 25 ; the input is applied at 6, 7 and the output is taken from 50, 51 ; a resistance 42 balances quadrature voltage across 12, 13 due to the resistance of the screens 17, 18; condenser 44 is adjusted to compensate for any difference between the power-factor of 38 and 22 (with 23 ... 25) ; calibration is performed with variable condenser 29.
Patent GB-745368-A (GB)
Title: Process for the manufacture of sulphuric acid ester salts of leuco vat dyestuffs of the antraquinone series
IPC: C09B9/00
Filed: 1952-11-18
Abstract: Vat dyes are connected to their leucosulphuric esters by reacting with copper, brass, iron, cobalt or nickel or mixtures thereof, chlorsulphonic acid, and a mixture of a-picoline and at least one diethyl-(monomethylcyclohexyl) amine with or without diethyl - cyclohexylamine, the weight of amine or amines other than a-picoline being 10-60 per cent of the weight of the mixture thereof with a-picoline.  Features other than the presence of the diethyl-(monomethylcylohexyl)-amine are the same as those of the parent Specification and Specification 745,365.  In examples (1) 1.5 - dibenzoylaminoanthraquinone is reacted with chlorsulphonic acid in presence of the brass, copper or iron or a mixture of brass and iron and diethyl - (2-, 3-, or 4 - methylcyclohexyl) - amine mixed with a-picoline; (2) 1 (p - N - dimethylsulphamidobenzoylamino - 4 - benzoylamino anthraquinone is reacted with chlorsulphonic acid in presence of brass or iron and diethyl - (4 - methylcyclohexyl) - amine mixed with a-picoline; (3) carbazolized di - (51 - benzoylamino - 11 - anthraquinonyl) 2. 8 - diamino - chrysene or the anthrimide from 1. 3 - dichloro - 2 - methylanthraquinone and 1.4-monobenzoyl-diaminoanthraquinone is reacted with chlorsulphonic acid, in presence of iron or brass, diethyl - (2 - methylcyclohexyl) amine and a-picoline.
Patent GB-291552-A (GB)
Abstract: 291,552. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 18, 1927. Anthraguinonehydroazines. - N-dihydro-1 : 2 : 1<1> : 2<1>-anthraquinoneazine is chlorinated in sulphuric acid of from about 85 per cent to 95 per cent strength, preferably with warming and in the presence of a catalyst. The product is stated to be faster to chlorine than that obtained by chlorinating in 96 per cent sulphuric acid as described in Specification 4035/02. In an example, N-dihydro-1 : 2 : 1<1> : 2<1>-anthraquinoneazine is dissolved in 90 per cent sulphuric acid, some sulphuric acid containing nitrogen oxides is added, and chlorine is passed through at 50‹ C. until the formation of the dichloranthraquinoneazine is complete; the reaction mixture is then diluted with water or dilute sulphuric acid is added for the fractional separation of the product. Specification 221,643 also is referred to.
Patent GB-159566-A (GB)
Title: Improvements relating to driving mechanism for spinning, twisting and other like preparing machinery for cotton and other like fibrous materials
IPC: D01H1/20
Filed: 1919-11-24
Abstract: 159,566. Tweedales & Smalley, Ltd., and Tweedale, S. Nov. 24, 1919. Spindle-driving apparatus. _- The driving-shaft, the differential gearing, and the gearing connecting such parts with the driving-mechanism of the spindles and bobbins of spinning twisting, and other like preparing- machinery for cotton and like fibrous material are supported in a framework C which is bolted to the end frame D and a spring- piece E of the machine. When applied to spindle and bobbin driving-mechanism as described in Specification 159,565, bevel wheels a<3>, b<8> are geared with vertical shafts b<2>, a<4> which drive the spindles and bobbins. By changing a bevel wheel b<5> to the position shown in dotted lines and similarly changing a bevel wheel b<4>, the direction of rotation of the spindles and bobbins may be changed.
Patent GB-1219290-A (GB)
Title: Improvements in and relating to the monitoring of thin film deposition on substrates
Inventor: LUTSCH ADOLF GOTTFRIED KARL
IPC: G01B17/02
Filed: 1968-06-19
Abstract: 1,219,290. Ultrasonic thickness measurement; ultrasonic couplings. SOUTH AFRICAN INVENTIONS DEVELOPMENT CORP. 19 June, 1968, No. 29197/68. Headings H4D and H4J. Thin film deposition on a substrate is monitored by detecting changes in the velocity of an ultrasonic surface wave transmitted along the film and/or the substrate surface on which the film is deposited. In the Fig. 4 embodiment a transducer assembly A is clamped to end region 11a of a substrate 9 in an evacuated deposition chamber. Plate 10 shields the assembly A from material x being evaporated on to the substrate. The assembly A is used for (preferably pulsed) transmission and reception of a surface wave B and a bulk wave C which are reflected from end region 11b and interfere to produce a resultant signal. The bulk wave is substantially unaffected by buildup of the deposited film, but the build-up results in a velocity change of the surface wave and hence an amplitude change of the said resultant signal. This resultant signal, after frequency conversion in mixer 15, is demodulated at 17 and fed via gated amplifier 18 and diode pump integrator 19 to a recorder or indicator 20: it may also be used to control the deposition. The gating of amplifier 18 is such that multiple echoes from end 11b do not affect indicator 20. In an alternative embodiment transducer assembly A is used for transmission only and a similar assembly, clamped at end region 11b, is used for reception. Transducer details.-The transducer assembly (Fig. 1) comprises an X-cut quartz crystal 1 cemented to a damping block 3 and to a coupling member 2 in the form of a comb (e.g. of photo-etched phosphor bronze). Members 4 and 7, attached to block 3 by springs 5, clamp the comb to the substrate 9. Spring tension is adjusted by screw 8.
Patent GB-1516649-A (GB)
Title: Rubber flap damper valve
IPC: F16F9/34
Filed: 1975-07-11
Abstract: 1516649 Valves MOULTON DEVELOPMENTS Ltd 8 July 1976 [11 July 1975] 29263/75 Heading F2V The subject matter of this Specification is similar to that in Specification 1,408,862 but the claims are directed to the two-way valve assembly for use in the fluid spring suspension unit. The assembly comprises two oppositely acting one-way valves each comprising a rubber closure flap (23, 24), Figs. 1 and 2 (not shown), compressed between a ported wall 10 and a respective rigid plate (25, 26). Each flap, on its surface which is urged towards the ported wall, is dimpled, corrugated or otherwise rendered uneven so that the flap may have a number of contact points with the wall. The porting in the wall, instead of comprising the slots disclosed in Specification 1,408,862, comprises a number of small holes (21, 22) each of a diameter not exceeding 3 mm.
Patent GB-1522181-A (GB)
Title: Digital mti radar system
IPC: G01S13/526
Filed: 1975-07-11
Abstract: 1522181 Radar RAYTHEON CO 11 July 1975 29308/75 Heading H4D In an adaptive digital M.T.I. radar, the echo video signal produced by each range sweep is quadrature phase detected (37) and the "in phase" and "quadrature" signals range increment divided and each increment converted (43, 44) into digital format. The two digital words for each increment are quadrature combined to form a complex digital word W=A+jB or in vector form, A unit vector #Mn.r representing the average phase # 1  of all the clutter in an area, (r - 1) to (r + 2) range increments in length and two range sweeps in angular width, in calculated form The vectors #Pn.r and #Pn+1.r for the same increment in successive sweeps will thus, on average, be angularly spaced by # 1 , Fig. 2A. A discrete moving target, however will cause the angular spacing to vary from # 1 . Multiplying #Pn.r by #Mn.r rotates the #Pn.r vector through # 1  into the average (no target) position of vector #Pn +1 .r. Clutter is thus cancelled, leaving a target vector, by the function. Thus during the first p.r.p, the series of complex words P1.1 . . . P1.R, Fig. 3A is fed into random access memory 52 and buffer memory 54, such that during the second p.r.p, the words P1.1 . . . P1.R are converted at 56 to their complex conjugates P1.1<SP>.</SP> ... P1.R<SP>.</SP>, in synchronism with the series of complex words P2.1 ... P2.R, whereby complex multiplier 58 produces a series of products, Fig. 3d. The series of products are fed through averaging network 60 comprising three increment delay 64, subtractor 62 and summer 66 to give, which is divided by in normalizer 68 to give #Mn.r. The M.T.I. canceller 50, instead of using the first order function given, produces the third order function, The vectors #Pn.r, #Pn+1.r and #Pn+2.r...are thus delayed at 70 for three increments in their respective p.r.p.'s before being repectively multiplied at 72 by - 1, and -1 (outputs of memory 74). The recursive multiplication by the unit vector #Mn.r is produced by circuit 75, 76, 78.
Patent GB-448692-A (GB)
Title: Improvements in neon signs and the like
IPC: G09F13/26
Filed: 1935-11-04
Abstract: 448,692. Changing signs. MINNS, R. H., 21, Chapel Avenue, Addlestone, Surrey. Nov. 4, 1935, No. 29415/34. [Class 3 (i)] In stroboscopic signs and the like in which a disc perforated with clesigns &c. rotates in front of circular concentric electric discharge tubes, the perforations are in the form of two or more rings of openings, all of the same size and equally spaced apart. The number of openings therefore differs in each ring, and with certain lamp frequencies and speeds of the disc d moving effects in different directions are produced. The tubes f, g may be independent and be energized by currents of different frequencies, and current frequency differences may be obtained by the use of half-wave rectifiers. The tubes may be of different colours.
Patent GB-723008-A (GB)
Title: Improvements in or relating to radar systems
Inventor: TANNER STANLEY REES
IPC: G01S7/282
Filed: 1951-12-17
Abstract: 723,008. Pulse radar. DECCA RECORD CO., Ltd. Aug. 5, 1952 [Dec. 17, 1951], No. 29540/51. Drawings to Specification. Class 40(7). In a pulse radar operating simultaneously or selectively at two or more harmonic radio frequencies the output from the pulsed transmitter oscillator is applied to a harmonic generator. As illustrated in Fig. 1 (not shown), the direct output from a pulsed magnetron oscillator and the fourth harmonic produced by a coaxial-line diode and filter are applied simultaneously to separate directional aerials or selectively by means of a waveguide switch to a common aerial or to separate aerials. At the receiver, Fig. 2 (not shown), the high- and lowfrequency signals received by separate aerials are reduced to a common IF by means of separate local oscillators having a common AFC, the outputs from the two mixers being selectively applied to a single IF channel; in a modification, Fig. 3 (not shown), the highfrequency local oscillator comprises a lowerfrequency oscillator and harmonic generator. Alternatively separate IF channels may be employed, Fig. 4 (not shown), the output from a single local oscillator being applied drectly and via a harmonic generator to the two mixers and the outputs from the two channels being applied either to separate displays or to a common display.
Patent GB-225059-A (GB)
Title: An improved means for drying and pressing garments
IPC: D06F73/00
Filed: 1923-11-23
Abstract: 225,059. Bailey & Woodward, Ltd., and Bailey, B. M. Nov. 23, 1923. Drying in the open; suspending devices.-Garments are dried by inflation with hot air so as to obviate the usual subsequent ironing operation. The garments are suspended from nozzles 11 connected by bayonet joints to damper-controlled pipes 10 connected to a hot air main 9. A fan 4 forces air over the steam coil 6 and through the pipe 5 to the main. The sleeves and legs of the garments are closed by clips 14.
Patent GB-520091-A (GB)
Title: Improvements in and relating to sparking coils
IPC: H01F38/12
Filed: 1938-10-12
Abstract: 520,091. Sparking coils. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 12, 1938, No. 29562. Convention date, Oct. 13, 1937. [Class 38 (ii)] A sparking coil the magnetic circuit of whch includes in addition to a central core 1 a spirally wound strip 4 external to the windings is housed in a metallic casing 5 and is electrically insulated therefrom by a mass of good heat conducting material, e.g., synthetic rubber with a filling of powdered quartz.
Patent GB-152671-A (GB)
Title: Apparatus for bringing about and controlling reactions between gases
IPC: B01J8/04
Filed: 1920-10-20
Abstract: 152,671. Conover, C. April 30, 1919, [Convention date]. Controlling chemical processes; catalytic apparatus.-An apparatus for effecting reactions, especially catalytic reactions, between gases comprises a number of reaction chambers, each of which is provided with independent jackets, arranged above and below, containing a liquid or liquids whose boiling and circulation controls the temperature of the reaction chambers and transfers heat to the entering gases. The gases enter the reaction chambers under pressure through restricted openings, whereby uniform distribution is obtained. The apparatus shown is built up of several units with heat-insulating material between, each unit comprising a flat tubular reaction chamber B set between two compartments A, C, provided externally with independent pipe connexions for circulating a liquid or liquids in a direction opposite to that of the rea,cting gases. The use of independent compartments A, C permits of the top and bottom of the reaction chambers being maintained at different temperatures. The reacting gases enter a distributing chamber R and are forced under pressure into the reaction tubes B through small openings P. The gaseous product issuing from the tubes pass to a receiver or condenser. The vapours from the compartments A, C rise into condensers, whence the condensed liquids pass to reservoirs for return to the compartments.
Patent GB-1046905-A (GB)
Title: Method of manufacturing shaped articles of thermoplastic material
IPC: B29C43/00
Filed: 1963-07-26
Abstract: Shaped articles are formed by press moulding filament of a blended polymer consisting of two thermoplastic polymer components.  The components are selected and the moulding temperature is determined on the basis of temperature characteristics of the components as specified in the Specification.  The thermoplastic polymers may be polyvinyl chloride and poly-a -methylstyrene or nylon and polystyrene.  The filaments may be sandwiched between sheets of polyvinylchloride.
Patent GB-443253-A (GB)
Title: Improvements relating to vehicles
IPC: B60P1/44
Filed: 1934-10-17
Abstract: 443,253. Vehicle bodies. FISHER, G. L., 561, Old Kent Road, London. Oct. 17, 1934, No. 29769. [Class 108 (i)] In vehicles of the kind for conveying refuse or other loads which are loaded manually over the top of a tailboard a step is provided to facilitate loading and is adapted to be moved vertically to or near a position at the top of the vehicle body so as to be out of the way. As shown a step 12 is provided in conjunction with a tailboard which is also movable vertically. The tailboard comprises a part 1 to which is hinged the flap 2 and the part 1 is provided with side members 4 adapted to be guided by means of rollers 5 in guideways 3. As the tailboard is raised a lever 6 on the flap 2 is adapted to engage a stop 8 to turn the flap 2 into the open position while when the tailboard is lowered its final movement causes the flap to become vertical, owing to the stop 9 contacting with a cam slot 100 on the lever, and allow the pins 11 to enter apertures on the body. The step 12 is provided with side levers 13 hinged to slides 4 which are adapted to be raised by chains &c., either manually or from the vehicle power unit. As the slides are raised stops 15 cause the levers 13 to rotate and bring the step 12 into the vertical position, rollers 16 engaging guides 3. Continued vertical movement of the step and slide eventually causes the slides 4 to lift the tailboard which at the top is opened beneath the lower edge of the step 2. Other operating means may be employed. Specification 438,144 is referred to.
Patent GB-285183-A (GB)
Title: Improvements in rivet snaps or sets
IPC: B21J15/36
Filed: 1926-11-25
Abstract: 285,183. Keay, R. W. Nov. 25, 1926. Riveting sets and snaps are designed to avoid sudden transitions of cross-sectional area from the parallel shank 2 to the head end 7, the crosssection being approximately the same on both sides of the rib 4 which co-operates with the retaining clip on the percussive tool.
Patent GB-943127-A (GB)
Title: Improved dust removal system for grinding and like machines
Inventor: SWIFT PETER
IPC: B24B55/06
Filed: 1961-08-18
Abstract: 943,127. Confining dust in grinding machines. DUST CONTROL EQUIPMENT Ltd. Aug. 20, 1962 [Aug. 18, 1961], No. 29806/61. Heading F4X. In a machine comprising a grinding wheel or circular cutting tool arranged to rotate within a housing comprising a collector case 3 connected to a suction system at 8, and a cowl 4, the case 3 has at least one opening 9 so positioned that a stream of ambient air is drawn across the lower part of the case 3. As shown, ambient air is drawn across the bottom of case 3 through inlet 9 whose size can be controlled by adjustable cover 10. Dust laden air is also drawn from grinding point 6 down duct 14 where it meets the ambient air stream which deflects it into the exhaust system. Specification 943,126 is referred to.
Patent GB-432547-A (GB)
Title: Improvements in or relating to amplifying devices particularly for acoustic installations
IPC: H05K7/02
Filed: 1933-10-27
Abstract: 432,547. Cables and conduits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Oct. 27, 1933, No. 29896. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 15, 1934]. [Class 36] To facilitate the repairing of an electrical amplifier of a talking film installation the leads connecting the various units of the amplifier are combined into one or more readily exchangeable structures which may be constituted by pipes 1 and coupling members 2, the ends of the leads projecting from the pipes and preferably being distinguished by different colouring or different lengths of projection.
Patent GB-973752-A (GB)
Title: Electrical conductor lead-in
IPC: H01R4/00
Filed: 1961-08-18
Abstract: 973,752. Mounting terminals. STANDARD TELEPHONES & CABLES Ltd. Aug. 18, 1961 [Aug. 25, 1960], No. 29913/61. Heading H2E. The lead-in of a conductor through an insulating body (Fig. 1) comprises a body member 2 with a metal tube 1 embedded therein through which extend several conducting wires 3, e.g. of silvered copper, a tube end is mechanically deformed and the protruding ends of the wires are then bent over this end of the tube and squeezed by a metal terminal sleeve 5 placed thereon. Sealing is effected by application of a plastic or solder 6. An embodiment (Fig. 2) comprises a metal casing 7 housing a semi-conductor device 9 which is connected to the lead-in conductor through a contact body 10.
Patent GB-321306-A (GB)
Title: An improved milling machine attachment
IPC: B23Q27/00
Filed: 1928-10-17
Abstract: 321,306. Hindle, R., and Niblock, F. Oct. 17, 1928. Cutters.-A cutter for milling lignum vitae or similar strips is arranged so that curves of various curvatures can be cut with the same cutter. Two circular plates 9 are secured to two parallel faces 2a of the boss 2, by bolts 8, the T-shaped heads of which enter the circular groove 12. The cutter 1 is secured to a plate 10 mounted at right-angles to the plate 9, and thus by varying the angular position of the cutter relative to the mandrel axis, grooves of varying section can be cut. To ensure equal setting of both cutters, graduations 13 are marked on the edge of plates 9. Cutters of both concave and convex forms are used.
Patent GB-997076-A (GB)
Title: Safety means for protecting internal combustion engines upon loss of oil pressure
IPC: F01M1/26
Filed: 1960-08-31
Abstract: 997,076. Engine stop gear. T. CROWE. Oct. 2, 1961 [Aug. 31, 1960; May 25, 1961], Nos. 30027/60 and 18938/61. Heading F1K. The invention relates to safety means for protecting an internal-combustion engine on loss of oil pressure comprising a device responsive to the oil pressure of the engine and a time delay mechanism. In Fig. 1 the switch 5 is connected with a daspot 8. After operation of the starter switch 3 the switch 5 remains open for a predetermined period. Switch 6 is operated by lubricating oil pressure. If both switches 5 and 6 are closed the ignition coil 4 will be earthed. In a modification the switches 5 and 6 control a fuel supply valve. In Fig. 3 when the engine has been started the valve 20 opens slowly under the effect of suction from the manifold 24. If the valve 30 controlled by the oil pressure is open the engine suction can operate the piston 33 which is connected to a fuel supply valve 35 and thus stop the engine.
Patent GB-743382-A (GB)
Title: Improvements in printing plates
Inventor: BOLL OTTO LOUIS
IPC: B41C3/08
Filed: 1953-10-30
Abstract: 743,382. Laminated articles. PLASTOTYPE, Ltd. Oct. 8, 1954 [Oct. 30, 1953], No. 30076/53. Class 140. [Also in Group XVI] A flexible, laminated, plastic printing plate or electro mould consists of a layer of plastic material and a reinforcing backing composed of a resin-impregnated layer of fabric. The fabric may be cotton or linen impregnated with a phenol-aldehyde resin, and the plastic layer may be of rubber, cellulose acetate, benzyl cellulose, polymerized olefines, polyvinyl chloride or a vinyl acetate-chloride copolymer. The resin-impregnated fabric is brought into contact with a thermoplastic layer in a mould or on an original and subjected to heat and pressure to shape the thermoplastic composition whilst curing the thermosetting resin in the fabric.