baber/WOPTO huggingface dataset:
Patent GB-942787-A (GB)
Title: Improvements in and a method of manufacturing return tube bends
IPC: B21C37/28
Filed: 1962-10-10
Abstract: 942,787. Making return bends; bending; forging. BABCOCK & WILCOX Ltd. Oct. 10, 1962 [Oct. 13, 1961], No. 38336/62. Headings B3A, B3E and B3H. [Also in Division F2] A method of making a return tube bend comprises compressing a return tube bend of circular or substantially circular cross-section tube in dies to a non-circular section, such that the radius of the return bend is greater than or equal to the outside dimension of the bent tube in a direction parallel to a plane containing the axis of the tube and is less than the radius of the return bend of circular cross-section. A return tube bend 1 having straight limbs 3, 4 and a bend radius R equal to the diameter of the tube D is positioned in a die 5 which comprises a pocket 6 and formed jaws 7 slidable in slots 9 of a former 8 and a spacer 10. The side of walls 11, 13, 14, 16 and 19 of the components which are in contact with the return bend are shaped according to the final cross-section and the bend radius desired to be formed during compression of the bend in the dies in a direction 22. The rectangular section bend 1A so produced, Fig. 4, has a bend radius RA which may be equal to the dimension DA and less than the Radius R of the initial tube bend. To produce a square section bend the initial bend is slightly flattened in dies (not shown). If the return bends are to be connected to tubes having a circular cross-section then the bend is formed from a tube of a suitably larger cross-section to compensate for the reduction in crosssectional area during bending. Alternatively the bend may be connected to a straight tube having a lenticular form, Fig. 6, the crosssectional area of which is equal to that of the rectangular section bend made from the same diameter tube.
Patent GB-1336087-A (GB)
Title: Pivot joint assemblies having wear indicator means
IPC: F16C11/06
Filed: 1972-08-17
Abstract: 1336087 Pivot joints GENERAL MOTORS CORP 17 Aug 1972 [9 Sept 1971] 38400/72 Heading E2F A pivot joint assembly comprises a housing 10 having an apertured cover 28 welded to the housing at 36, a first bearing seat 16 adjacent a lower opening 14 houses a bearing ring 24 which embraces the shank 22 of a stud unit 18, the upper part of the head portion 20 of the stud unit 18 bearing against a second bearing seat 30, a spring in the form of an elastomeric ring 32 being disposed between the cover 28 and the second bearing seat to take up the wear between the seats and the stud unit head, and indicator means being provided by a protuberance 38 of the bearing seat 30. When the protuberance 38 is visable from outside the joint the latter is satisfactory but when the protuberance 38 has receded into the cover 28 the pivot joint requires replacement. The pivot joint may be packed with grease through a fitting 46 located in the protuberance 38.
Patent GB-1255751-A (GB)
Title: Herbicidal agents
Inventor: MUENZ FERDINAND
IPC: C07D233/38
Filed: 1969-07-31
Abstract: 1,255,751. Herbicides containing imidazolidin-2-one-1-carboxylic acid amides. FARBENFABRIKEN BAYER A.G. 31 July, 1969 [13 Aug., 1968], No. 38430/69. Heading A5E. [Also in Division C2]  A herbicidal composition contains as active ingredient an imidazolidin-2-one-1-carboxylic acid amide of formula: wherein R is a C 1  to C 8  aliphatic hydrocarbon radical.
Patent GB-1427600-A (GB)
Title: Ignition system
IPC: F02P3/08
Filed: 1973-08-14
Abstract: 1427600 Ignition systems HITACHI Ltd 14 Aug 1973 [25 Aug 1972] 38476/73 Heading F1B An ignition system for an internal combustion engine comprises means 7 for converting a D.C. voltage from a low voltage supply 1 to a high voltage, a capacitor 8 for storing the high voltage and arranged to discharge its stored energy into a first ignition coil 4a in response to ignition timing means 10 and a second ignition coil 4b having a transister switch 2, 3 connected in series with its primary winding so as to interrupt the current flowing therein in response to the ignition timing means, the arrangement being such that each time one ignition plug of the engine is connected to the ignition system energy is supplied to the plug first from the first ignition coil and then from the second ignition coil, means 11, 12 being provided to prevent current flowing from one ignition coil to the other.
Patent GB-826090-A (GB)
Title: Improvements in or relating to microwave amplifiers
Inventor: DAIN JOHN
IPC: H01J25/12
Filed: 1957-12-12
Abstract: 826,090. Velocity-modulated tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Aug. 19, 1958 [Dec. 12, 1957], No. 38653/58. Class 39(1). [Also in Group XL(c)] A velocity modulated microwave amplifier comprises an electron beam source, input and output resonators coupled to the beam, and means for applying positive feedback, insufficient to cause self oscillation, over at least one intermediate length of the beam which is beyond the input resonator in the direction of electron flight. In the embodiment shown in Fig. 1, a reflex velocity modulated valve has an input resonator 3, an output resonator 4 and a reflector electrode 2. Feedback is provided by arranging the supply potentials such that the electron beam, after reflection at the electrode 2 passes the output resonator a second time, but in the opposite direction and is collected before it reaches the first resonator. In an alternative embodiment, Fig. 2 (not shown), a direct velocity modulated valve is used and feedback is provided by two additional resonators situated between the input and output resonators and coupled together by a positive feedback path. The resonators in either embodiment are illustrated as cavities, but may be replaced by, for example, short lengths of helical line.
Patent GB-930280-A (GB)
Title: A rotary piston internal combustion engine
IPC: F02B53/00
Filed: 1961-10-31
Abstract: 930,280. Rotary-piston internal-combustion engines. O. KORF. Oct. 31, 1961 [Nov. 2, 1960], No. 38848/61. Class 110(2). A rotary-piston I.C. engine comprises a water-cooled housing 1, Fig. 9, having a cylindrical bore 5, Fig. 4, and closed by endplates and a concentrically rotatable rotor 3 of undulating profile which co-operates with an even number of crescent-shaped elements 2 housed and oscillatable in recesses extending between the end-plates. The crests of the undulations lie within an enveloping circle spaced from the bore 5. Variable volume chambers e, f, g, h between the elements each include a sparking plug 13, an induction port 11 (not shown), for the intake of a gaseous mixture and an exhaust port 12. Variable volume chambers a, b, c, d between the contact and sealing edges 10 of each element 2 may also or alternatively be fitted with a sparking plug, induction and exhaust ports. When not so fitted the chambers may function as compressors into which air is sucked, compressed and delivered therefrom for any desired purpose. The ports 11, 12 may be obturated by valves operating through linkage and cams from the rotor shaft 4 or alternately by the end faces of the rotor. The sparking plugs may be omitted and all the chambers function as compressors.
Patent GB-1110219-A (GB)
Title: Improvements in shaft seals
Inventor: JAGGER ERNEST THORNTON
IPC: F16J15/32
Filed: 1964-09-24
Abstract: 1,110,219. Shaft seals. GEORGE ANGUS & CO. Ltd. 7 Sept., 1965 [24 Sept., 1964], No. 38997/64. Heading F2B. In a shaft seal having a peripheral sealing flange 3 moulded from resilient material with a frusto-conical surface 6 having a screw-thread 8 moulded thereon, the screw-thread is of such cross - sectional shape that one flank 9 thereof is substantially parallel with the seal axis X-X. The seal has an outer annulus 1 stiffened by a metal ring insert 2 and the flange 3 is urged inwardly by a garter spring 4. The cross-sectional shape of the thread 8 which is of right - angled buttress form with the longer flank 9 parallel to the axis X-X and the shorter flank 10 transverse thereto permits the seal to be removed from its die after mould - ing by axial movement in the direction indicated by the arrow. In use, the thread acts to feed back leakage oil. The seal may be of silicone rubber.
Patent GB-1531143-A (GB)
Title: Portable air velocity measuring unit
IPC: G01P5/00
Filed: 1976-09-21
Abstract: 1531143 Measuring fluid flow CAMBRIDGE FILTER CORP 21 Sept 1976 [10 Nov 1975] 39067/76 Heading G1R A portable measuring device for measuring the velocity of air entering or leaving outlets of heating, ventilating or air conditioning systems to allow the systems to be balanced comprises a duct 22; transverse manifold tubes 24, 26 each containing a coaxial apertured sensing tube 28, 30; probes 42, 44 with open ends facing towards and away from one end of the duct and connected respectively to the manifolds; and means 36, 38 connecting the sensing tubes to the inlet and outlet of a meter 40 through which air flows preferably via a restrictor. To measure "return air" in a system tubes 24 are connected to the meter outlet and ambient air is allowed to be drawn into the meter inlet. Preferably the duct is collapsible.
Patent GB-1284394-A (GB)
Title: A process for the preparation of alumina gel
Inventor: GREGORY GEORGE KEITH EMERSON
IPC: C01F7/34
Filed: 1968-08-16
Abstract: 1284394 Antacid preparations JOHN WYETH & BRO Ltd 6 Aug 1969 [16 Aug 1968] 39202/68 Heading A5B [Also in Division Cl] An alumina antacid preparation comprises a straight or carbohydrate free alumina gel which is pourable and contains more than 6% w/w Al 2 O 3 , in association with other standard materials. The additives may comprise hexitol or sucrose.
Patent GB-1093925-A (GB)
Title: New 6,6-disubstituted decahydroquinoline compounds and process for preparing them
IPC: A61K31/00
Filed: 1965-09-14
Abstract: Novel 6-R-6-R1-decahydroquinolines and acid addition salts wherein R1 is a phenyl group optionally substituted by alkyl, alkoxy or trifluoromethyl groups or halogen atoms and R is cyano, esterified carboxyl or acyl are prepared by intramolecular condensation and reduction of a 2-(g -aminopropyl)-4-R-4-R1-cyclohexanone prepared in situ from the corresponding 2-(b -cyanoethyl) compound followed by optionally converting a 6-cyano group to a carbalkoxy or acyl group, optionally introducing an alkyl or benzyl substituent into the 1-position and/or salt formation and separation of isomers.  2 - (b - Cyanoethyl) - 4 - cyano - 4 - R1 - cyclohexanones are prepared by condensing a 1-pyrrolidino - 4 - cyano - 4 - R1 - cyclohexene, prepared from the cyclohexanone, with acrylonitrile and hydrolysing the resulting 2-(b -cyanoethyl)-compound.  Pharmaceutical and veterinary compositions in conventional forms and animal feedstuffs comprise an above novel compound or salt thereof and a carrier therefor.
Patent GB-1416734-A (GB)
Title: Mounting devices
IPC: F16B2/08
Filed: 1972-08-23
Abstract: 1416734 Releasable fastenings R A H HEARD 23 Feb 1973 [29 Feb 1972 23 Aug 1972] 9310/72 and 39298/72 Heading E2B A band-clamp for securing a sign board 10 to a post 18 is secured to a turned-in channel section 12, 14, 16 on the back of the board by fasteners 26 having Tee-heads 28 whose extremities 30 are bent at right angles for insertion into the slot 14 in the manner shown in Fig. 3. The strap may be tensioned by bolt 38 and its other end secured by a kink 32 in a slotted buckle 24. The screw may comprise a bolt whose head is within the channel 14. The strap may be threaded through the holes 32 of buckles 24 at each end. The band may comprise a wire suitably looped and threaded to receive a nut.
Patent GB-906868-A (GB)
Title: Improvements in or relating to the nitration of fatty acids and their derivatives
IPC: C07C43/02
Filed: 1958-12-10
Abstract: A fatty acid of the formula HRCOOH or its nitrile, esters with C1-5 alcohols or glyceride are nitrated to the corresponding acid O2NRCOOH or derivative thereof (where R is a saturated bivalent aliphatic hydrocarbon radical having 11-17 carbon atoms) by contact in the liquid phase at 150-190 DEG C. with a nitrating agent which consists of an oxide of nitrogen having a N:O ratio of 1:2, e.g. N2O4 or NO2. Examples nitrate lauric acid, methyl laurate, lauronitrile and hydrogenated cottonseed oil (mainly tristearin).
Patent GB-1164116-A (GB)
Title: Improvements in or relating to Continuous Casting
Inventor: WATERS THOMAS DANIEL
IPC: B22D11/00
Filed: 1965-09-20
Abstract: 1,164,116. Continuous casting. GLACIER METAL CO. Ltd. 19 Sept., 1966 [20 Sept., 1965], No. 40002/65. Heading B3F. Alloy, such as Al-Pb and Al-Cd, which when cooled from a molten state pass from a single homogeneous phase to a state in which two immiscible liquid phases exist before one of the liquid phases is solidified, are continuously cast (possibly, for making composite bearing material, on to a steel strip 6), the isothermal Al between the single- and two-phase liquid states lying within a vertical passage which is part of the graphite mould 12, 13, Fig. 4, or is formed by a vessel 3<SP>1</SP>, Fig. 3, leading directly to the mould 3. For an Al-Pb alloy with 20% Pb, the tundish temperature is at least 1100 C. (achieved by previous superheating or by heating the tundish) with a reduction in the mould vessel or mould by 450 C.; with 10% Pb, those figures are 950 C. and 300 C. There may be up to 50% Pb. A vacuum or inert atmosphere may be provided during melting and casting. At a primary solidification temperature (isothermal B 1 ) the aluminium-rich phase of the two-phase state is solidified and at a lower temperature (broken line isothermal, Fig. 3) the lead-rich phase solidifies and the casting is solid. The casting may be spraycooled and may require heat treatment to precipitate remaining solid solution Pb. To obtain a non-uniform distribution of the lead-rich phase, a mould with a taper-mouth or a mould with a stepped-section is used, Figs. 4B, 4C (not shown). By using a mould, Fig. 4D, combining these features, a casting is obtained whose cross-section indicates a middle portion N of uniform Pb concentration flanked by bands H D  and L D  of higher and lower concentrations respectively. A mould 13, Fig. 4E, with an entry portion 14 with passages 15, 16 gives a casting with alternating bands L E , He of lower and higher than average concentrations of Pb. The different bands may provide particular properties in chosen areas or assist the bonding to a metal backing. If the major component is the denser, e.g. if it is Pb, the casting is performed upwardly so that the isothermal B1 is above the isothermal A1.
Patent GB-899813-A (GB)
Title: Improvements in or relating to fairleads
IPC: B63B21/10
Filed: 1959-11-26
Abstract: 899,813. Fairleads. CAMPBELL & SONS, WALTER N. Nov. 22, 1960 [Nov. 26, 1959], No. 40132/59. Class 78 (5). A fairlead comprises a pair of horizontal rollers 3, 4 and two pairs of vertical rollers 5, 5, and 5<SP>1</SP>, 5<SP>1</SP>.
Patent GB-1589350-A (GB)
Title: Ink ribbon box
IPC: B41J17/32
Filed: 1977-09-28
Abstract: Two cylinders (14, 15), which lie parallel to one another and are connected at their ends by transverse webs (16, 17), serve for receiving the rolls of ink ribbon. Formed on the outside of the transverse webs (16, 17) in each case are outwardly projecting guide ribs (18, 19). The guide gap (20, 21) bounded by these guide ribs (18, 19) has on one side of the ink-ribbon cartridge (10) a different width from that on the other side. Consequently, faulty insertion of the ink-ribbon cartridge (10) in the machine, e.g. in a small printer, is prevented. <IMAGE>
Patent GB-1015407-A (GB)
Title: Anorexogenic compositions
IPC: C07D295/073
Filed: 1963-10-14
Abstract: The invention comprises 1-(o- and m-chlorophenyl) - 2 - piperidinopropane and their pharmaceutically acceptable acid addition salts. These compounds, and the corresponding p-chloro compounds may be prepared by reacting a -piperidinopropionitrile with o-, m- or p-chlorobenzyl magnesium chloride in an inert organic solvent, and, if desired, converting the products to their salts with physiologically acceptable acids.ALSO:The invention comprises amorexogenic compositions containing as active ingredient one or more compounds of the general formula <FORM:1015407/A5-A6/1> or their pharmaceutically acceptable acid addition salts together with a pharmaceutical carrier or excipient.  The compositions may be adapted for oral or rectal administration and may be in the form of tablets, coated pills, gelatine or water capsules, suppositories, drops, syrups, elixirs, suspensions, powders or granules.  The compositions may also contain preservatives and flavourings, and aqueous preparations may contain sweetening, thickening, wetting and/or suspending agents.
Patent GB-1490906-A (GB)
Title: Method of and apparatus for measuring the average size of a group of apertures
IPC: G01B11/02
Filed: 1975-10-03
Abstract: 1490906 Measuring dimensions photoelectrically RCA CORPORATION 3 Oct 1975 [4 Oct 1974] 40649/75 Heading G1A Apparatus for determining average aperture width in a portion of a member having an array of apertures comprises means for: projecting a beam of substantially mono-chromatic light through said portion to produce a combined interference and diffraction pattern; detecting the intensities of each of at least two interference fringes; and  generating from the detected intensities electrical signals representing the average aperture width. A test object 41, Fig. 2 (e.g. a colour television mask) comprises a metal sheet of thickness 0À1- 0À2 mm provided with an array of slits 42 of average width (b) 0À075-0À25 mm and length 0À75-1À5 mm arranged lengthwise in parallel rows separated by a spacing (a) of 0À5-2À0 mm. A 5 mW He-Ne laser 27 Fig. 4 has a lens system 35 that expands the beam to a diameter 28 of e.g. 13 mm and focuses it, in the absence of a test object, on a plane 109, about 1À5 m distant, containing a pair of photo-detectors P1, P2. When the mask 41 is placed adjacent the laser lens system 35 and transverse to the beam 28, interference fringes spaced at e.g. 1À4 mm intervals are formed at the plane 109, the intensities being represented graphically by horizontal peaks 106, 106a, 106b; the envelopes of the peaks in turn form a diffraction pattern having a major centre lobe and side lobes 107. The photo-cells P1, P2 are placed to measure the intensities V x , V z  of two peaks 106a, 106b to one side of the centre lobe. Electrical apparatus Fig. 3 (not shown), generates and displays a signal representing the average aperture width according to b = k + Vy (V x /V z )<SP>m</SP>, where k, Vy and m are constants determined empirically from a diversity of aperture arrays. Changes in the positions of the interference fringes, which may result from variations in the spacing of the aperture rows, may be sensed by other detectors to provide compensatory information.
Patent GB-1282632-A (GB)
Title: Method for measuring dimensions with an image pickup apparatus
IPC: G01B11/02
Filed: 1969-08-14
Abstract: 1282632 Measuring dimension NIPPON STEEL CORP and HAMAMATSU TV CO Ltd 14 Aug 1969 [14 Aug 1968 (2)] 40662/69 Heading G4H In apparatus for measuring a dimension of an object 13 (Fig. 3) an image 16 of the object together with<SP>3</SP>the image 17 of a graduated scale is projected on to the photo-electric surface of a pick-up tube 14, scale markings over the length of the object being counted in a counter 24 during a horizontal scan of the tube. If the object is easily distinguishable from its background the pulse video signal output of a selected horizontal scanning line is sliced by a slicer 23 and the pulses squared so that only pulses coinciding with the object image are counted. If the object and background are not easily distinguishable the image of the object is observed on the monitor, two vertical lines 21 at the ends of the object being manually selected and the pulse signal being counted between these lines. Alternatively a non-transparent movable shutter (28, Fig. 5, not shown) may be adjusted so that only the part of the scale coinciding with the object is revealed. To allow for distortion errors due to for example the distance between the object and projecting lens 3 not being large enough relative to the dimension of the object a distorted scale grid may be projected on to the pick-up tube surface or an equidistant scale grid may be projected to give a distorted image. The distorted grid may be obtained by positioning a regular grid in the normal object position and projecting it via the lens 3 on to photographic film, this then being used as the distorted grid. Similarly if the object is positioned at an angle to the pick-up tube a photograph of the image of a regular grid at the same angle may be made. Converging scale lines may be used (Figs. 14, 15, 16, not shown) the horizontal scanning line being selected in accordance with the distance between the object and the lens. The apparatus may also be used to measure the end positions of an object, the central portion being separately measured.
Patent GB-893037-A (GB)
Title: Gas inflated seal for a floating roof tank
IPC: B65D88/48
Filed: 1960-11-28
Abstract: 893,037. Roofs for tanks ; pressure-relieving devices for fluids. CHICAGO BRIDGE & IRON CO. Nov. 28, 1960 [Nov. 27, 1959 ; Feb. 24, 1960], No. 40747/60. Classes 69 (1) and 135. A cylindrical storage tank 11 has an inflated, annular, flexible tube 14 disposed between a floating roof 12 and the interior surface of the tank and pressure-regulating means for maintaining gas pressure in the tube within a predetermined range comprising a constant pressure reservoir 17 of variable volume which communicates with the tube 14 and has gas inlet 21 and outlet 23 means. The roof has a deck 13a supported on pontoons 13. The tube 14 is of fabric impregnated with synthetic rubber. The reservoir roof 19 is heavy enough to ensure the correct gas pressure in the tube 14 and is attached to the wall 17a by a flexible skirt 20. The inlet valve 21 admits gas from a pump, air bottle or the like whenever its actuating rod 21a touches the floor of a nearempty reservoir. An escape valve 22 on the outlet pipe 23 opens whenever its actuating rod 22a touches the roof 19 of the near-full reservoir. Alternatively, as in Fig. 4, the valve 21 is omitted and the reservoir is filled by a thermal gas-pump comprising a closed container 31 connected to one-way valves 37 and 38 with water seals 42 and 43. The maximum ambient daily temperature heats the air in the container 31 but then falls, causing the air to contract and suck in more air from outside, through the valve 37. Subsequently the rising temperature, after a cool night, expels air into the reservoir through the valve 38.
Patent GB-1153036-A (GB)
Title: Improvements in Invalid Wheel Chairs
Inventor: PRITCHARD DENNIS HENRY
IPC: A61G5/12
Filed: 1965-09-24
Abstract: 1,153,036. Seats. VESSA Ltd. 16 Sept., 1966 [24 Sept., 1965], No. 40771/65. Heading A4J. In a foldable invalid's wheel chair, vertically pivotable foot rests 9 can be detached, in certain positions, by withdrawing pivots 14, 15 from holes (6) in lugs (4 and 5), fixed to the uprights of the chair frame. In the in-use or stowed position, the release of the pivots is blocked by interlocking formations, on or above the lugs 13 (and 5) and transfer, from one position to the other, necessitates raising the foot rest to overcome the blocking action of projection 18. The foot supporting plates are foldable about horizontal axes.