baber/WOPTO huggingface dataset:
Patent GB-1272399-A (GB)
Title: Electro-optical modulators
Inventor: DORE MARCUS JOHN
IPC: G02F1/03
Filed: 1968-08-15
Abstract: 1,272,399. Modulating light; optical position finding. DEFENCE, SECRETARY OF STATE FOR. 11 Aug., 1969 [15 Aug., 1968], No. 38997/68. Headings H4D and H4F. [Also in Divisions G2-G3] A beam B of light passing from a laser L through an appropriately oriented electro-optic crystal to an aperture e.g. the end of a fibre optic light guide b, is spread by applying across the crystal a variable electric field which is non- uniform across the light beam in any plane transverse to its direction of propagation so that the velocity of propagation of parts of the beam varies with the local variations in the electric field, thereby modulating the amount of light entering the guide G. Since the beam spreading is insensitive to the polarity of the field, the light will tend to be modulated according to a waveform having a component of twice the frequency of the modulating field, unless the modulating signal is superimposed on a larger direct bias voltage. The modulator may be used in an optical communications link, or, as shown in Fig. 3, in an arrangement for aligning the light source L and aperture G. Two crystals X1, X2, preferably of ADP, KDP, or potassium dideuterium phosphate, or lithium niobate, are mounted in tandem with their c-axis normal to the beam direction and mutually orthogonal, and electrodes E1-E4 provided on opposite faces which are normal to the c-axis extend parallel to the beam direction. Modulating fields of frequeney f 1  and f 2  are applied to the crystals so that beam spreading occurs both vertically and horizontally. The modulated light is detected at K, the second harmonics 2f 1  and 2f 2  are filtered out and signals derived to operate servo systems J1 and J2 and associated horizontal and vertical lead screws S1 and S2 respectively, and so move the guide G until the maximum amplitudes of the second harmonics are received, when the source L and guide G are aligned. An alternative arrangement of four electrodes about the crystal is illustrated in Fig. 2 (not shown).
Patent GB-965713-A (GB)
Title: Processes for the production of fused polycyclic hydrocarbon derivatives,and the compounds thus produced
IPC: C07J69/00
Filed: 1961-10-31
Abstract: The invention comprises 17b -acyloxy-A-nor-B-homo-5#x, 10#x-estrane derivatives having the formula: <FORM:0965713/C1/1> wherein X and Y either respectively represent the oxygen atom =O of a keto group and hydrogen, or both represent the grouping =H(OH) and R is an acyl radical derived from an organic carboxylic acid having from 1 to 7 carbon atoms and the preparation thereof by reducing a 17b -acyloxy-A-nor-B-homo-estr-5(10)-3, 6-dione having the formula: <FORM:0965713/C1/2> in a neutral or alkaline medium and separating the reduction product from the medium. Reduction by catalytic hydrogenation, e.g. with palladinised charcoal yields a 17b -acyloxy-A-nor-B-homo-5#x, 10#x-estran-3-one while reduction with alkali metal borohydride, e.g. KBH4 yields 17b -acylocy-3#x, 6#x-dihydroxy-A-nor-B-homo-5#x, 10#x-estrane. Specification 965,712 is referred to.
Patent GB-1439649-A (GB)
Title: Drawer locking apparatus for an article of furniture
IPC: E05B65/46
Filed: 1973-08-17
Abstract: 1439649 Locking devices SOC ANON DESOER 17 Aug 1973 [28 Aug 1972] 39020/ 73 Heading E2A In a chest of one or more drawers which is looked by both key 8, 9 and combination lock 24, the combination lock serves to prevent removal of the key until all the drawers are closed and locked and the combination lock has been fully scrambled. Each drawer 2 is associated with a spring-biassed lever 15 which, upon closing of the drawer, is withdrawn from the path of a projection 14 on a slidable rod 7 whereby rotation of a bar 10, by a key 8 and cylinder lock 9, causes an eccentric pin 11 on the bar and engaged in a slot 7a of the rod to raise the latter so that a bracket 6 on the rod receives a locking bolt on the drawer. The bar 10 carries an eccentric pin 29 engaged in a slot 19 of a slide 20 mounting a flexible strip 21 having a recess 22 in which, when the drawer is closed, is received the bolt 23 of a combination look 24 so that after scrambling of the lock, removal of the key is then possible. The strip 21 has a V-shaped portion 26 which in the locked position is located over a stop 25 but in the unlocked position abuts the stop so that rotation of the bar 10 is prevented until the bolt of the lock 24 is raised.
Patent GB-1417714-A (GB)
Title: Sliding clasp fastener
IPC: A44B19/34
Filed: 1972-08-22
Abstract: 1417714 Sliding-clasp-fasteners LIGHTNING FASTENERS Ltd 21 Aug 1973 [22 Aug 1972] 39094/72 Heading E2S A sliding-clasp-fastener comprising two stringers 10, 11 each stringer having a fabric tape 12 and a series of coupling elements 13 secured along one edge portion of the tape, the two series being connected together at a bottom end thereof, each stringer tape having along its whole length a portion 16 of its width of one face thereof provided with a heat- or pressure-sensitive adhesive, and a band 18 of heat- or pressure-sensitive, adhesive extending transversely of the bottom end portion of the tapes and secured to said one face thereof whereby, when the fastener is secured to an article by means of the adhesive, a fluid-tight seal is formed by the adhesive between the fastener and the article. As shown, each fabric tape 12 has a series of coupling elements 13 consisting of a coil of plastics filament secured, by a stitched cord 13a, along an edge portion of one face 14, the lower ends of the coupling elements 13 being connected together by a pin 15. Each band; 16 comprises a coating of hotmelt adhesive 17 along the whole length of the respective tape an auxiliary fabric tape 18, completely coated on both surfaces with hot-melt adhesive 19, being secured across the tapes 12 immediately below the coupling elements 13. When the fastener is adhesively secured into an article e.g. a bootee, a fluidtight seal is provided at the bottom and sides of the coupling elements 13, 13 between the fastener and the article. The auxiliary tape (20), Fig. 3 not shown, is of such a height as to fit neatly between the bands 16, 16. The auxiliary tape 18 may be omitted, in which case a film of adhesive material is applied across the stringer tapes. The auxiliary tape 18 may extend over, and be pressed onto, the lower ends of the coupling elements 13.
Patent GB-1160993-A (GB)
Title: Checking of Multidigit Numbers
IPC: G06C11/02
Filed: 1966-09-01
Abstract: 1,160,993. Detecting errors. SVENSKA DATAREGISTER AB. 1 Sept., 1966 [6 Oct., 1965], No. 39120/66. Heading G4B. A device for checking a multidigit number, such as a membership number, subscriber number, or spare parts number, entered in a cash register, calculating machine, or the like, comprises a plurality of digit wheels 6 rotatably mounted on a shaft 3 and having teeth a-j, each tooth a-j bearing a predetermined number of secondary teeth 9 arranged parallel to the shaft 3, and gears 10, 11 in driving engagement with the teeth 9 and movable along a shaft 13. In operation, the digit wheels are rotated according to the multidigit number and a check number entered into the cash register to align selected teeth 9 with the gears 10, 11, the number of teeth 9 selected in each order representing the corresponding digit weighted by a factor characteristic of the decimal place so that when the gears 10, 11 are moved along the length of the digit wheels 6, the gear 10 is rotated a whole number of times if the multidigit number and check number have been entered correctly. The gear 10 carries a plate 10a having a recess 10b aligned with a slide 24 when the gear rotates a whole number of times. If the number is entered incorrectly the plate 10a moves the slide 24 leftwards to release a member 27 acting to disable the machine. The gears 10, 11 are supported by a housing 12 slidable along the shaft 13 under the influence of an endless wire 14.
Patent GB-1151362-A (GB)
Title: Whistle/Hooter for Model Railway Locomotive
Inventor: IRELAND REGINALD ERNEST
IPC: A63H17/32
Filed: 1965-09-14
Abstract: 1,151,362. Whistle/hooter and controller for model railway. R. E. IRELAND. 12 Sept., 1966 [14 Sept., 1965], No. 39167/65. Heading A6S (Also in Divisions H2 and H4] A model railway system comprises a direct-current power supply connected to a track for driving a locomotive thereon and an audio frequency signal generator connected to the track to operate a sound reproducing device electrically coupled to the track and mounted in a vehicle running thereon. The sound reproducing device is preferably coupled to the track through isolating capacitors and may be a balanced armature microphone. The motor power may be supplied through a transistor amplifier control system as shown in Fig. 3. A DC supply is connected across 31 and 32, on AC supply between 49 and 32, the tone generator output (using the same DC supply) at X and track is connected to 11 and 12. The six position ganged switch SI, S1A is used to simulate various running conditions. In the first position (as shown) capacitor 38 charges to a voltage determined by potentiometer 33, an increasing voltage with a superposed alternating component being supplied to the track via the direct coupled amplifier TR3, TR4, TRS to accelerate an engine and overcome starting friction. In position 2 the capacitor 38 discharges slowly through resistors 46 and the load, simulating coasting. In positions 3, 4 and 5 the capacitor 38 is shunted by successively decreasing resistances producing a braking effect. In position 6 the train is controlled by potentiometer 44 and the signal comprising DC with a larger superposed AC component than in position 1 gives accurate control for shunting. The tone circuit is an asymmetric astable multivibrator with alternative coupling capacitors so that the frequency spectrum of a steam whistle or diesel hooter can be produced.
Patent GB-1513790-A (GB)
Title: Curing oven
IPC: F27B9/24
Filed: 1975-09-25
Abstract: 1513790 Curing oven JUNGERS VERKSTADS AB 25 Sept 1975 [27 Sept 1974] 39251/75 Heading F4G A curing oven for impregnated mineral wool in the form of mats 40 comprises a pair of endless perforated plate conveyers 29, 30 disposed facing each other in a housing, and pairs of opposed pressure and evaucation chambers A, B arranged along the conveyers for passing hot air through the mats, and means for passing the air through adjacent pairs of opposed chambers, or groups of opposed chamber, in opposite directions. The chambers A, B, are defined by perforated plates 23 . . . 26, and reversible fans and pumps contained in boxes 19, 19<SP>1</SP> cause passage of hot air through the chambers, negative pressure being maintained outside the chambers by pumps in boxes 20, 20<SP>1</SP>. The upper portion of the frame 47 supporting the oven is stated to be vertically adjustable.
Patent GB-856998-A (GB)
Title: Improvements in or relating to moulding plastic articles
IPC: B29C45/00
Filed: 1958-12-05
Abstract: 856,998. Moulding beads &c. CHELTON (POPPITS) Ltd., and CHARLES, G. R. S. March 7, 1960 [Dec. 5, 1958], No. 39342/58. Class 87(2). [Also in Group VII] A polystyrene article, e.g. a bead, is produced by moulding the article, subjecting it to mechanical stress and, whilst under stress, subjecting it to chemical attack by a crazing agent to produce a pattern of flaws in the polystyrene. The body portion 10 of a bead is formed by injecting polystyrene from nozzle 22 into cavity 21 of a mould 20 containing a removable core 23. Cooling water is supplied to channels 24 in the mould and the resultant cooling sets up stresses in the body 10 which is removed from the mould and a crazing agent such as acetic acid or ethyl alcohol is applied to the cavity 13 produced by core 33 so that flaws 25 are produced. The inside of cavity 13 may be painted, dyed, or silvered and a coloured insert 14 may be used having inturned lips which engage the head 11 of an adjacent bead. Mechanical stress may also be produced by twisting or bending or by forcing an oversize mandrel into a hollow article, Specification 854,666 is referred to.
Patent GB-1205507-A (GB)
Title: Web roll cradle
Inventor: HENRY NELSON ROBERT
IPC: B65B41/16
Filed: 1968-08-19
Abstract: 1,205,507. Unwinding webs. WOODMAN CO. Inc. 19 Aug., 1968 [21 Aug., 1967], No. 39503/68. Heading B8R. The two rollers 17, 18 supporting a web roll R in an unwinding operation have rubber strips 20, 21 glued to their peripheries to form pockets 20a, 21a which accommodate slackness in the web. The strips are arranged in herring-bone pattern and the bights of the strips on one roller are directed in the opposite direction to the bights of the other roller. The roll R is rotated by the tension in the web and causes the rollers 17, 18 to rotate. The ends of the roll R abut guide rollers (32, 33) on the ends of rods 30, (31) extending from slides 40, 41 adjustably clamped to a double bar guideway 42. The tension in the web W is controlled by two brake blocks 65 engaging the rollers 17, 18; the brake blocks 65 are carried by a dancer lever 55 formed by two L-shaped members 56, 57 connected by cross-bars 53, 54 and pivoted on stub shafts 60. The web W is formed into two loops L1, L2 by the cross-bars 53, 54 and reversing rollers 50, 51, 52 and the lengths of the loops vary with the web tension. A spring 61 urges the L-shaped members to maintain the web W under tension.
Patent GB-987239-A (GB)
Title: Improvements in or relating to railway vehicles
Inventor: HIRST ARCHIE JOHN
IPC: B61F5/14
Filed: 1961-11-03
Abstract: 987,239. Springs. METALASTIK Ltd. Oct. 31, 1962 [Nov. 3, 1961], No. 39527/61. Heading F2S. [Also in Division B7] A railway vehicle body 26 is supported by a column 25 and series connected springs 47, 40, Figs. 1, 5, from a bogie frame 23, the compression spring 40 comprising rubber material 41 bonded to metal plates 42, 43, 44; the spring 47 acting in shear and compression has a rubber insert 56 bonded to metal members 48, 52; the plate 43 is bolted to flange 50 of member 48. The spring 47 supports column 25 above a rubber pad 60 until at a predetermined loading condition the column engages pad 60 and the vertical loading is transferred directly to spring 40. The plate 43 can tilt relative to plate 44 under the action of forces tending to deflect the body 26 horizontally relative to the bogie. The rubber pad 60 may be positioned on the end of member 52, Fig. 9 (not shown). A central king pin 32, Fig. 8, between the body and bogie has a rubber bush 35 loosely fitting in a sleeve 31, the pin having a bogie retaining cap 36 holding the bogie on the body in the event of a derailment. The metal plates 42, 43, 44 may be part-spherical. The spring 47 may be replaced by a compression unit of rubber slabs with metal interleaves surrounded by an annular compression spring of rubber with metal interleaves. Alternatively, the spring may be an annular rubber pad bonded to plate 43 and having a central bore to receive a cylindrical stud on column 25, the pad having an axial thickness which progressively decreases from its inside diameter, i.e. the bore, to its outer diameter.
Patent GB-1130201-A (GB)
Title: Improvements relating to detergent dispensers for washing machines
Inventor: SOMERVILLE DONALD ALEXANDER
IPC: A47L15/44
Filed: 1965-09-16
Abstract: 1,130,201. Dishwashers. HOOVER Ltd. 27 May, 1966 [16 Sept., 1965], No. 39577/65. Heading A4F. [Also in Division D1] In a detergent dispenser 12 for a washing machine having at least two separate compartments 40, 41 for particulate detergent, a separate nozzle 46 can direct a substantially horizontal jet of water through a hole 45 in the end wall of each compartment to dispense the detergent to a common outlet at the other end, the space between the nozzles and walls being drained. The dispenser 12 is mounted in the washing machine lid 10 and consists of a moulded plastic dish having concave bottom portions 16, (17), Fig. 3 (not shown), and a vertical partition 18 divided at the inlet end into curved partitions 21, 22 with holes 45 and having an off-set part 19, at the outlet end. A drain spigot 26 between partitions 21, 22 and the end wall is connected by hose 33 to an opening 32 in the tubular outlet 27 beneath partition 19. A moulded cap 34 has ridges 35, 36 located round the edges of partitions 21, 22 and carries deflectors 42 depending into compartments 40, 41 so as to deflect water controlled by solenoid valves and directed by nozzles 46 through holes 45. Outlet 27 fits into a rubber diaphragm 56 on the inlet 55 of a washing machine which is provided with an overflow vent 60 having a deflector 62 to prevent splashing, subsidiary outlets 65 being provided in case vent 60 may be blocked. The compartments are loaded through opening. 66 in cap 34 normally closed by a metal lid 67 hinged with a moulded plastic detergent baffle 75 which prevents the detergent from being tipped into the outlet space but may be raised for cleaning.
Patent GB-1516581-A (GB)
Title: Optical device comprising mechanical connections transverse to the optical path
IPC: G02B17/08
Filed: 1976-09-23
Abstract: 1516581 Lens mounting means THOMSONCSF and ETABS PIERRE ANGENIEUX 23 Sept 1976 [24 Sept 1975] 39594/76 Heading G2J In an optical device comprising element 2, Fig. 2, partly cut-away to accommodate an inner structure 3 the latter is mechanically supported by the element itself which is supported by an outer structure 1. The invention consists essentially of screw-engaging rings 1, 10, 12, 13, Fig. 3 forming the outer structure 1 and similar rings forming the inner structure 3 the element 2 being securely clamped by arcuate deformable segments 19 of structure 1 and similar segments 25 of structure 3. Fig. 7 shows a catadioptric system employing the mounting of the variation.
Patent GB-1381034-A (GB)
Title: Esters of halogenated c8 alcohols and process for their production
IPC: C07C69/63
Filed: 1972-08-25
Abstract: 1381034 Esters of halogenated C 8  alcohols BP CHEMICALS INTERNATIONAL Ltd 1 Aug 1973 [25 Aug 1972] 39644/72 Heading C2C Novel esters of halogenated C 8  alcohols of general formula wherein Z is XCH 2 .CHX-; Z<SP>1</SP> is -CHX.- CHX-; X is Cl or Br; R is a mono- or divalent aliphatic or aromatic radical; Y is and x is 0 or 1, are prepared by reacting in the liquid phase an octadienyl ester with halogen at ambient temperature. In the example sent compounds prepared are di-(2,3,7,8-tetrachloro- 1-octyl) phthalate, 2,3,7,8-tetrachloro-1-octylacetate, propionate and -benzoate.
Patent GB-1453659-A (GB)
Title: Apparatus and method for wet oxidation of organic matter
IPC: C02F1/72
Filed: 1974-09-16
Abstract: 1453659 Wet oxidation of organic matter using free radicals BARBER-COLMAN CO 16 Sept 1974 [24 Sept 1973] 40200/74 Heading C1C A process for wet oxidation of combustible matter in solution or dispersion by exposure to an oxygen-containing gas under elevated temperature and pressure for a time sufficient to substantially reduce the COD is improved by vigorous agitation with simultaneous introduction of the oxygen-containing gas into the area adjacent to the high agitation so as to produce fine increments of gas which are rapidly distributed and to effect rapid transport of free radicals generated by the oxidation reaction to other sites capable of oxidation of combustible organic matter before expiration of the life of the free radicals, thereby to catalyse the oxidation reaction to achieve a high rate of oxidation of combustible organic matter in the aqueous medium. A reactor suitable for carrying out the above process is described in detail. The process may be used with organic waste, e.g. slimes and sludges, such as sewage. Suitable temperatures are 400-480 F., and pressures of 50-200 p.s.i. above autogenous pressure may be used.
Patent GB-825729-A (GB)
Title: Method of producing melamine
Inventor: JACKSON HARRY EDWARD
Filed: 1957-12-27
Abstract: Melamine is prepared by reacting at least one of the groups of compounds (a) urea and ammonium sulphamate, (b) urea and sulphur dioxide, (c) guanidine sulphamate, at 200-360 DEG  C., under a superatmospheric pressure of ammonia, in the presence of at least 0.001%, by weight of the total reaction charge, of boron or a boron compound.  Suitable catalysts include boron nitride, carbide, fluorides (including BF3 addition compounds such as the etherate), oxides, and boron acids and salts, particularly alkali metal and ammonium metaborates and tetraborates; hydroxyfluoboric and fluoboric acids and salts; and the reaction products of boric acid or a boron oxide with phosphorus pentoxide or a phosphoric acid.  A preferred amount of catalyst is 0.5% by weight of the total reaction charge. Preferred pressures of ammonia are 34-68 atmospheres.  Reference has been directed by the Comptroller to Specifications 704,593, 713,223 and 719,662.
Patent GB-1441957-A (GB)
Title: Inspection device for a blast furnace
IPC: C21B7/24
Filed: 1973-08-29
Abstract: 1441957 Furnace observation devices HOOGOVENS IJMUIDEN BV 29 Aug 1973 [1 Sept 1972] 40577/73 Heading F4B An inspection device for a blast furnace comprises a viewing tube 1 which is adapted to be mounted by means of a bayonet catch 2 on a hot air main and which pivotally supports a member 6 carrying a removable inspectionglass holder 8. The member 6 is pivotable between an inspection position and a position in which it closes the end of the tube 1 with the glass holder out of the line of the tube whereby the glass holder may be removed during operation of the furnace. As shown, the member 6 is mounted on a pin 5 on a flange 4 on the tube 1 and is pressed against bearing surfaces 12-14 on the flange by a bolt 16. The holder 8 is releasably fitted in the plate 6 by a bayonet catch and the inspection glass 9, preferably consisting of a glass layer and a mica layer, is fixed in the holder by a screw-in cap 10.
Patent GB-1389602-A (GB)
Title: High-permeability alloy for magnetic recording-reproducing heads
IPC: C22C19/00
Filed: 1972-09-01
Abstract: 1389602 Magnetic nickel-base alloys  ZAIDAN HOJIN DENKI JIKI ZAIRYO KENKYUSHO 1 Sept 1972 [13 Oct 1971] 40605/72 Heading C7A An alloy which possesses high permeability and hardness and is particularly suited for magnetic recording/reproducing heads, consists of by weight 60À2 to 85À0% nickel 6À0 to 30À0% iron  3À1 to 23À0% tantalum  and 0À01 to 10% of one or more of the following elements:- up to 7% molybdenum up to 5% chromium up to 10% tungsten up to 7% vanadium up to 3À1% niobium up to 10% manganese up to 7% germanium up to 5% titanium up to 5% zirconium up to 5% aluminium up to 5% silicon up to 5% tin up to 5% antimony up to 10% cobalt up to 10% copper and inpurities. The alloys are heated to a temperature above 800C in a vacuum or non-oxidizing atmosphere for a period of up to 100 hours, and then cooled to above the order-disorber transformation point, e.g to 600C, preferably at a rate between 100C/sec and 1C/hour to provide the required degree of order, between 0À1 and 0À6. The alloy may further be heated subsequently to the cooling for up to 100 hours at a temperature below 600C, e.g. at 400C.
Patent GB-914742-A (GB)
Title: Pipe coupling
IPC: F16L37/252
Filed: 1958-12-16
Abstract: 914,742. Pipe couplings. SEAMARK, L. M. C. March 3, 1960 [Dec. 16, 1958], No. 40625/58. Class 99(1). . In the pipe coupling described and claimed in Specification 785,310, spring means are provided for positively locking the gripping members 1 and the locking ring 7 against relative rotation. As shown, there is received in a groove 20 in the ring 7 a leaf spring 22 formed with a central, depressed portion 23 and held in position by a split pin 28. The ends of the spring are arranged to ride up cam surfaces 25 on lugs 2, forming part of the clamping members 1, when the pipes are rotated relatively to the ring 7 and finally engage in shoulders 27 in the lugs. The coupling may be of metal or a plastic.