baber/WOPTO huggingface dataset:
Patent GB-766981-A (GB)
Title: Apparatus for examination of materials by means of ultra-sonic waves
Inventor: BRADFIELD GEOFFREY
IPC: G01N29/24
Filed: 1950-03-20
Abstract: 766,981. Ultrasonic inspection devices. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 20, 1951 [March 20, 1950], No. 6892/50. Class 118 (2). [Also in Group XXXIX] A coupling 1 of hardened steel is provided with a reflecting surface 6 and a probe 2 so that a pulsed beam of ultrasonic waves projected by a piezo-electric transducer 5 through a plane surface 4 is focused on to the probe. The waves may be either longitudinal or shear waves. Instead of a single spherical reflector 6, Fig. 1, there may be two cylindrical reflectors 6a, 6b, Fig. 5 with axes at right angles or a plane reflector and a spherical reflector. Shear waves may be derived from longitudinal waves at the interface 25 between a wedge 26, Fig. 6, of polymethyl methacrylate and a block 24 of hardened steel, the waves having low and high velocities in the two media. For longitudinal waves, the tip of the probe is either a pyramid or a circular cone of large spiral angle. For shear waves, the tip is elongated with the length parallel to the plane of polarization. The transducer 5 is a quartz crystal or a plate of polarized polycrystalline barium titanate. Mounting. The coupling bears against shoulders 12a in a block 11 which slides between fixed guides 12. Pressure is applied by a screw 9 or by a two-stage spring or hydraulic control. In the first stage, a hard tungsten carbide or diamond tip indents the specimen under test end in the second stage the pressure is relaxed before transmission starts. To  enable the probe to slide over the specimen, the coupling 1 is carried by a block 15, Fig. 4, which is formed with a spherical annulus 18 centred at 19 just beyond the end face of the probe. Springs 20 hold the block 15 seated against steel balls 21 in a race 22. The probe may be provided with a sharp cutting edge so as to prepare a flat seating as it is moved across the specimen under pressure. Specification 766,982 is referred to.
Patent GB-1410436-A (GB)
Title: Classifying apparatus
IPC: B07C3/20
Filed: 1973-02-13
Abstract: 1410436 Sorting postal mail; controlling conveyer belt speed POST OFFICE 12 Feb 1974 [13 Feb 1973] 6919/73 Heading B8A An operator generates a sorting code on a keyboard 4 relating to each successive letter passing from left to right (as seen in Fig. 2) on a conveyer belt 12. According to the invention, the speed of the conveyer belt 12 is varied according to the position of the leading letter for which the operator has not established a code. Each letter is successively conveyed away from a stack in a storage compartment 5 by conveyer belts 7, which feeds it to the belt 12. When the letter gets to a predetermined position along the belt 12 it actuates a photodetector 27 (Fig. 3). This generates a signal which is fed into a shift register 26 (part only, shown). The latter is also fed with a series of signals from a photodetector 22. The latter is activated from a light source which shines through an apertured disc rotatively coupled to the drive of the conveyer 12. Each output from each section (one only, enclosed in broken lines, shown in Fig. 3) of the shift register, is applied to a summing amplifier 39 which provides a control signal voltage for application to the drive motor of the conveyer 12. The shift register output is also applied to a respective one of a series of lamps 46. This gives a visual indication to the operator, of the letters for which a code has been entered. The control signal voltage is also varied in response to the number of characters of each code being keyed so that the speed of the conveyer is reduced when a long code or series of codes needs to be keyed. Each code, on completion of keying, is stored in a memory bank. When each letter reaches the end of the viewing screen it is fed to a print unit at which the code is applied to the face of the letter by the action of heated pins on a phosphor-impregnated tape. Acceleration rollers 15 then feed the letter to a shoot 16.
Patent GB-844391-A (GB)
Title: An auxiliary support system for mine workings in a semi-steep to steeply-inclined seam
IPC: E21D23/04
Filed: 1957-03-01
Abstract: 844,391. Mine roof supports. GEWERKSCHAFT EISENHUTTE WESTFALIA. March 1, 1957 [March 26, 1956], No. 6944/57. Class 20(2) In an inclined mine working, support frames are each attached at one of their ends to one or more ropes 11 stretched along the coal face 10, and have lagging plates 16 secured to their other ends adjacent the goaf 20. The frames, each comprising two props 12, 13, a roof bar and a floor bar 14, are arranged in pairs and each pair carries a plate 16. The plates 16 are staggered to provide open pockets 19 for receiving loose material. To alter the inclination of the plates 16, the roof bar and floor bar of the lower frame of each pair have an extensible portion 14a. The props 12, 13 are telescopic and the plates 16 consist of two relatively adjustable overlapping parts. A rope 24 is'tensioned diagonally across each pair of frames. Props 18 are disposed in the spaces between pairs of frames. A conveyer 23 and a mining machine may be incorporated in the support system and arranged to be advanced with the ropes 11 and attached frames &c.
Patent GB-1301014-A (GB)
Title: An earphone
IPC: H04R1/10
Filed: 1970-02-13
Abstract: 1301014 Earphones AKG AKUSTISCHE U KINO-GERATE GmbH 13 Feb 1970 [17 Feb 1969 12 Jan 1970] 6951/70 Heading H4J The diaphragm of an earphone has a resonance frequency at the lower end of the audio frequency range and is mounted so that in use a space exists between the diaphragm and the users ear and is freely vented to the atmosphere in at least one mode of operation. The figure shows one earphone of a headset. The earphone has a peripheral wall 21 carrying a soft bead 22 filled with liquid or foam material. The wall surrounds an ear of a user forming a chamber between the ear and the diaphragm. The wall has apertures 23 which may be opened and closed by rotation of a similarly apertured adjustment ring 24 to vary contact with the surrounding environment. The transducer is of the moving coil type and the rear of the metal, paper or plastics diaphragm 3 communicates via holes 17 and a duct 15 with the interior of the earphone housing 18 which is vented to the outside air via apertures 18. A pad of foam material 6 may be provided for changing purposes and is separated from the diaphragm by a mesh 10. The case 18 may also contain damping material.
Patent GB-1337706-A (GB)
Title: Metal casting process
IPC: C04B41/46
Filed: 1972-02-15
Abstract: 1337706 Metal casting refractory cores PRECISION METALSMITHS Inc 15 Feb 1972 [22 Feb 1971] 6954/72 Heading C1J A refractory core is impregnated with a melt of at least one organic selected from non-cyclic OH compounds or cyclic compounds, having M.Pt. of at least 170‹ F., density of at least 1 gm./ml., can be melted to a liquid and resolidified on cooling, and can be volatilized on heating above the M.Pt.; then incorporated into a mould; heated to volatilize and remove the impregnant whereafter molten metal is cast into the mould. Refractories specified are SiO 2 , ZrSiO 4 , ZrO 2 , Al 2 O 3 , CaZrO 4  and Al silicates, whilst the organics include inter alia acids (e.g. azelaic, malonic) alcohols (e.g. mannitol) for the non-cyclics and, for the cyclics, alcohols, phenols, ketones, imides, amides, keto amides, anhydrides, aldehydes, hydrocarbons and nitrocompounds, examples being given.
Patent GB-1463251-A (GB)
Title: Insecticidal miticidal and lepidoptericidal active isothiuronium complex and free bases
IPC: C07C335/30
Filed: 1975-02-19
Abstract: 1463251 Isothiourea derivatives STAUFFER CHEMICAL CO 19 Feb 1975 [29 March 1974] 6974/75 Headings C2C and C2P [Also in Division A5] Isothiourea derivatives, some of which are novel, of the formula (R-N=C(SR 1 )NHR 2 ) n X, wherein n is 1 or 2, X is an organic or inorganic acid or is non-existent, R is a C 3-8  alkyl or benzhydryl group, R 1  is an alkenyl, methylthiomethyl, aryl, aralkyl, substituted aralkyl, cycloalkyl or C 1-6  alkyl group, and R 2  is an alkenyl, aryl, aralkyl, methylthiomethyl, cycloalkyl or C 3-10  alkyl group, are obtained (1) by reacting thiourea derivatives (RNH.CS.NHR 2 ) with esters (R 1 X) and, if desired, converting the salts so formed to the free bases by treating them with bases, or (2) by reacting carbodiimides (R-N=C=N-R 2 ) with mercaptans or (3) by treating the free bases with acids (X). The above compounds have pesticidal properties.
Patent GB-1183452-A (GB)
Title: Improvements in or relating to Speed Indicating Apparatus
Inventor: BOWEN RONALD JAMES
IPC: G01P1/10
Filed: 1966-02-17
Abstract: 1,183,452. Transistor pulse circuits. DAWE INSTRUMENTS Ltd. 17 May, 1967 [17 Feb., 1966], No. 6978/66. Heading H3T. [Also in Division G1] The time duration of each pulse (C2) of a train of pulses (C, Fig. 2, not shown) represents a measured speed, and is compared with the duration of a correspondong pulse (E2) representing a reference speed, each corresponding pair of pulses starting simultaneously. An electromagnetic pick-up 21, Fig. 1, supplies signal pulses (A) to a transistor 2 at a frequency corresponding to a rotary speed to be measured or to the speed of articles moving on a conveyer, the output of transistor 2 being used to trigger a bi-stable 22 to produce the pulses (C2). The bi-stable output is applied both to the emitter of a gating transistor 8, and to a monostable multivibrator 23 which generates the reference pulses (E2) with duration times selected by resistors R1, R2, R3 and R4. The monostable output is supplied to the base of the gating transistor 8, which conducts (Y) only when the pulses (C2) are of shorter duration than the reference pulses (E2), indicating that the measured speed has become greater than the reference speed. A transistor 9 now conducts (F1, F2) and allows a free running multivibrator 25 to operate to energize an audible alarm 12. A condenser 31 maintains continuous operation of the multivibrator 25 during the period (F3) between consecutive pulses of the two pulse trains (C2, E2), as long as the reference speed is exceeded.
Patent GB-1014928-A (GB)
Title: Improvements in or relating to radiation detection apparatus
IPC: G08B17/12
Filed: 1964-02-19
Abstract: 1,014,928. Sensing conditions photo-electrically. ELECTRONICS CORPORATION OF AMERICA. Feb. 19, 1964 [Feb. 21,1963], No. 6992/64. Addition to 993,506. Heading G1A. The condition sensing apparatus of the parent Specification in which an avalanche breakdown radiation detector is connected in the secondary of a step-up transformer, the primary being connected to an A.C. source, is modified by the inclusion of a capacitor in the primary circuit to make the primary circuit series resonant when the detector has a high impedance and non-resonant when the detector is in avalanche breakdown. As described the transformer is an autotransformer 16 with detector 20 across the whole winding 18 and capacitor 14 in series with the primary section 19 of the winding. The ferrite-core inductors 30, 32 have a low impedence to the A.C. frequency, but a high impedance at 3kc/s to detect the pulses reflected into the primary on avalanche in detector 20. These pulses are passed by diodes 36, 38 to charge a capacitor 46 which discharges slowly into a capacitor 48. So long as diodes 36, 38 pass pulsesatat least 3 per second, the controlled rectifier 64 is made conductive and current flows through the relay coil 66. The condition sensed may be the presence or absence of a flame.
Patent GB-515680-A (GB)
Title: Improvements in or relating to composite yarns and to fabrics comprising such yarns
IPC: D02G3/28
Filed: 1938-03-07
Abstract: 515,680. Yarns. BRUTISH CELANESE, Ltd. March 7, 1938, No. 7093. Void. Convention date, March 16, 1937. [Class 120 (iii)] A composite yarn comprises one or more components twisted in one direction and one or more components twisted in the opposite direction and . twisted together to form a substantially balanced yarn with the net twist of the components twisted in one direction substantially equal to. the net twist of the corresponding component twisted in the opposite direction; the denier of a component twisted in one direction is substantially equal to that of the corresponding component twisted in the opposite direction. The net twist and the denier of a component twisted in one direction should be within 8 per cent. of the net twist and denier of the corresponding component twisted in the opposite direction. One or more of the components may comprise one or more ends having a high degree of twist, e.g., more than twenty turns per inch and one or more of the components may contain an organic derivative of cellulose.
Patent GB-609245-A (GB)
Title: Improved differential control mechanism
IPC: B62D3/02
Filed: 1946-03-08
Abstract: 609,245. Universal joints. SUPPANCIC, G. O., and LACHMANN, G. V. March 8, 1946, No. 7338. [Class 80 (ii)] [Also in Groups XXXI and XXXIII] A differential control mechanism which may be used for the steering gear of vehicles or the controls of aircraft comprises two driven shafts 20, 21 which are separately connected to the driving shaft 22 through two universal joints arranged in parallel, the out-of-phase F of the joints bearing such a relation to the fixed angle # between the axes of the driving and driven shafts that a constant motion imparted to the driving shaft produces relatively asymmetrical differential motions of the driven shafts. In one embodiment illustrated, the driving shaft 22 has integral therewith a double yoke 231 carrying pivots such as 234 on which are carried the links 26, 27 which connect through single yokes 242, 252 integral with the coaxial driven shafts 21, 20 respectively. A further embodiment shows the mechanism built within the steering box of a vehicle to provide substantially correct steering angles.
Patent GB-403068-A (GB)
Title: Improvements in and relating to glow discharge tubes
IPC: H05B41/232
Filed: 1932-03-11
Abstract: 403,068. Discharge apparatus. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) March 11, 1932, No. 7344. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 12, 1932]. [Class 39 (i).] The ignition voltage of glow-discharge lamps or tubes operating on direct current is reduced by applying an alternating voltage to the electrodes through a condenser which prevents short-circuiting of the direct current. The series resistance may be such that the tube is fully loaded at the voltage at which it would ignite if no alternating voltage were applied. The tubes may be used in regulating arrangements as voltage-dependent resistances or to vary the short-circuited resistance of Tirrill regulators " in relation to the energizing voltage."
Patent GB-1214033-A (GB)
Title: Acrylonitrile graft polymers
Inventor: RINKLER HEINRICH
IPC: C08F283/06
Filed: 1968-02-15
Abstract: 1,214,033. Polyalkylene glycol sulphoalkyl ethers grafted with acrylonitrile. FARBENFABRIKEN BAYER A.G. 15 Feb., 1968 [17 Feb., 1967], No. 7360/68. Heading C3G. A graft polymer consists of a superstrate comprising acrylonitrile, optionally copolymerized with at least one comonomer, and a substrate comprising a polyalkylene glycol sulphoalkyl ether, the polyalkylene glycol having a molecular weight of 400 to 5000. The graft polymer is prepared by dissolving the substrate in an aqueous medium and polymerizing therein the graft monomer(s) using a free radical catalyst. Specified graft comonomers are methyl acrylate, methyl methacrylate, vinyl acetate and vinylidene chloride. In the examples, acrylonitrile and methyl acrylate are grafted on to a substrate prepared by reacting (a) polyethylene glycol with 1,4 - butane sultone or 1,3 - propane sultone or (b) polytetrahydrofuran, a trifunctional polypropylene glycol, or a polyalkylene glycol based on trimethylol propane or triethanolamine and ethylene oxide, with 1,3-propane sultone. Films prepared from the graft polymers are dyed.
Patent GB-974932-A (GB)
Title: Means and method of labelling or wrapping
IPC: B65B63/06
Filed: 1961-05-12
Abstract: 974,932. Feeding sheets. EMILE BERNAT & SONS CO. May 12, 1961 [Aug. 5, 1960], No. 17455/61. Heading B6B. [Also in Division B8] In a machine for placing openended wrappers about deformable articles such as skeins of yarn (see Division B8), the wrappers stacked on a table 11 are advanced in two stages, firstly between gluing means 9 applying adhesive to one edge, to a platform 12 and from thence to a mandrel 13. The wrapper advancing means comprises a carriage 44, 45 which reciprocates both horizontally and vertically so that pairs of suction cups 49, 55 traverse a partial rectangular path to move the wrapper in the two stages referred to above. A jet 30 may separate the top sheet from the stack.
Patent GB-313478-A (GB)
Title: Improvements in or relating to telephones
IPC: H04M1/02
Filed: 1928-03-12
Abstract: 313,478. International Electric Co., Ltd., and Baldock, F. R. March 12, 1928. Desk and table sets. - A bell set or calling device is contained within the base of a pedestal telephone set or comprises a self-contained unit which is secured to the base or merely forms a separate stand upon which the telephone set is supported when out of use. As shown, the bell set comprises a. casing B containing a ringer C and other components such as a condenser, induction coil and terminal block, and having rubber feet K. The upper part of the bell set is recessed as at B<2>, Fig. 3, so as to fit within the base A' of the pedestal telephone and the parts are secured together by a screw L. The weight usually provided in the base of the telephone set is preferably removed. If desired, the telephone set need not be secured to the bell set and furthermore instead of providing a self-contained bell set, the various components may be assembled within the base of the telephone set. One of the feet K may be replaced by a bracket which is adapted to support the bell set against a wall.
Patent GB-366322-A (GB)
Title: Improvements in, or relating to, laminated springs
IPC: B60G11/12
Filed: 1931-03-12
Abstract: 366,322. Laminated springs. PORTER, H. W., 78, Ringinglow Road, STANFIELD, G. and GREEN, H., Norfolk Works, both in Sheffield. March 12, 1931, No. 7665. [Class 108 (iii).] Members c, d having a slot a opening e for accommodating, t a n - gentially, that part of a spring leaf a approaching the eye b of a laminated spring are applied to the spring eye and have axial holes forthe shackle pin or bush f. The members may be a force fit on the eye, or may be secured by pegging, riveting, setscrews, &c., and they may extend along the length of the eye in which case a lug and slot engagement k, Fig. 11 (Prov.), may prevent relative rotation of the members. The members may be made of metal, such as mild steel, high tensile alloy steel, or hardened and tempered spring steel.
Patent GB-929688-A (GB)
Title: Improvements in and relating to packages
IPC: B65D85/10
Filed: 1961-03-02
Abstract: 929,688. Cartons; packages. ARENCO A.B. March 2, 1961 [March 12, 1960], No. 7728/61. Classes 18 and 94(1). A cigarette carton is made from a tubular blank with top end closure panels 10, 11, 12, 13 sealed by a strip 17 of thicker material whose end portion 23 has flaps 27 secured to side wall 6 by adhesive zones 26 to form a pocket to receive the adjacent trapezoidal shaped portion 21 to which it is initially attached by the partly slit line 24. The end part 10 has a fracturable panel extending partly into wall 6 which is torn open when the tongue 21 is pulled upwards. Parts 19, 20 of strip 17 are secured to the carton by adhesive zones 25.
Patent GB-1535569-A (GB)
Title: Process for dyeing textile materials
IPC: D06B5/22
Filed: 1976-02-27
Abstract: Textile wound packages containing natural and/or synthetic fibres are dyed at temperatures above 100 DEG C according to the exhaust method. For this purpose, the wound packages are inserted into a dyeing container. Before dyeing, deaeration and heating of the wound packages is carried out with the aid of hot steam having approximately the dyeing temperature. Immediately following, the deaerated hot wound packages are brought into contact with the dyeing liquor, which has previously been heated to approximately dyeing temperature in a starting container and, relative to the pressure of the hot steam atmosphere in a dyeing container, has been placed under elevated pressure. The so-called flooding-in technique is used here. During the course of this, the dyeing liquor penetrates into the wound packages from outside and from inside at the same time. During the further dyeing treatment up to its conclusion, dyeing is carried out with partial flooding of the dyeing container, the circulation of the dyeing liquor through the wound packages taking place exclusively from the inside outwards. The partial flooding of the dyeing container causes an increase in the dyeing liquor recirculation rate and requires a low recirculating pump efficiency. The uniformity of dyeing is good.
Patent GB-765828-A (GB)
Title: Improvements in or relating to jacks
IPC: E02B17/08
Filed: 1955-03-17
Abstract: 765,828. Fluid-pressure jacks. WIKSTROEM, N. E. March 17, 1955 [March 31, 1954], No. 7827/55. Class 78 (3). A fluid actuated stepby-step jack, particularly intended for raising shuttering, is provided with means for adjusting the distance moved at each step. The jack comprises a cylinder 5 and piston 7 surrounding a rod (not shown) and secured to rings of gripping balls 15, 20 which allow movement of the associated parts in an upward direction only. Threaded in a cap 6 secured to the cylinder is an adjustable sleeve 24 which limits upward movement of the piston. Bolts 25 secured to the piston-rod extend through the cup 6 and indicate the position of the piston. Fluid is admitted to the cylinder through a port 26 and the piston is urged to its upper position by a spring 22. In a modification (not shown) the gripping mechanisms are of the wedge grip type. Specification 667,550 is referred to.
Patent GB-1040421-A (GB)
Title: Improvements in or relating to automatic control systems for steam turbines
Inventor: WALKER HERBERT OSWALD
IPC: F01D19/00
Filed: 1962-02-28
Abstract: 1,040,421. Automatic control of acceleration. RICHARDSON, WESTGARTH & CO. Ltd. Feb. 27,1963 [Feb. 28, 1962], No. 7884/62. Heading G3R. In an arrangement for running a steam turbine up to speed at a desired rate of acceleration a steam turbine 10, a steam valve 12 is positioned by a servo-motor 22 controlled by a comparator 20 responsive to the difference between an intended acceleration signal F2 from an intended acceleration signal-producing apparatus 24 and an actual acceleration signal F1 derived from the output of a tachogenerator 16 via a differentiating circuit 18.
Patent GB-976272-A (GB)
Title: Gangway for mooring boats
IPC: E01D15/24
Filed: 1963-02-28
Abstract: 976,272. Landing-stages. G. HUMPHRIS. Feb. 27, 1964 [Feb. 28, 1963], No. 7970/63. Heading E1H. A landing stage for mooring a boat is hinged at one end to a fixed structure e.g. a harbour wall 1, or a pontoon and carries at its opposite end a buoyant chamber 8 and guide rails 9 which engage both sides of a pile 6 so that the floating end can move up and down but resists twisting. The landing stage may be provided with a mooring ring 10 adjacent the floating end. Fig. 1 (not shown) illustrates a number of parallel landing stages secured to a harbour wall and a further series of parallel landing stages extending in opposite directions from a pontoon arranged perpendicular to the harbour wall.