baber/WOPTO huggingface dataset:
Patent GB-1010922-A (GB)
Title: Improvements in or relating to radio-frequency ovens
IPC: H05K9/00
Filed: 1962-10-22
Abstract: 1,010,922. Microwave heating. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 22, 1962 [Oct. 25, 1961], No. 39876/62. Heading H5H. The feed aperture 10 of a microwave oven is surrounded by a metal sealing frame 19 which abuts against a metal door 14, when the latter is closed, and by an outer sealing frame 20 mounted either on the door or on the oven wall, and comprising a U.H.F. energy absorbent powder distributed in a dielectric material. The frame 20 preferably comprises 20 to 40% by weight of powdered graphite in a synthetic resin or ceramic material, and may be provided with a microswitch comprising a resilient pin which switches the oven out of circuit when any gap between frame 20 and door 14 becomes too large. As shown, slits 22 are provided in a metal support 21 for frame 20, for outlet of any energy passing through frame 20 into metal housing 1. Dielectric sealing frames may be provided both on the oven wall and on the door.
Patent GB-1070171-A (GB)
Title: Improvements in or relating to pyrido [3,4-b] indole derivatives
IPC: C07D471/04
Filed: 1964-10-07
Abstract: The invention comprises 4-amino-2,9-dimethyl - 1,2,3,4 - tetrahydro - 9H - pyrido-[3,4-b]indole of the formula <FORM:1070171/C2/1> and acid addition salts thereof.  The compounds are prepared by reacting 2,9-dimethyl-4-hydroxy - 1,2,3,4 - tetrahydro - 9H - pyrido-[3,4-b]indole with ethyl chloroformate followed by ammonia to form the free base and, if desired, reacting the free base with an acid to form the corresponding acid addition salt.  2,9 - Dimethyl - 4 - hydroxy - 1,2,3,4 - tetrahydro - 9H - pyrido[4,3-b]indole is prepared by reducing 2,9 - dimethyl - 1,3,4 - trioxo - 1,2,3,4 - tetrahydro-9H-pyrido[3,4-b]indole.  Pharmaceutical compositions, having monoamine oxidase-inhibiting activity, comprise a compound of the invention together with a pharmaceutically acceptable carrier. The compositions may be formulated as tablets, capsules, elixirs and injectable solutions and suspensions.
Patent GB-1085889-A (GB)
Title: Drier belts
IPC: F26B17/02
Filed: 1965-09-21
Abstract: 1,085,889. Seaming non-metallic sheet material. HUYCK CORPORATION. Sept. 21, 1965 [Oct. 14, 1964], No. 40259/65. Heading B5K. A papermakers' drier felt 10 comprises a fabric the ends of which are seamed together and apertures 42, 44, 46 are provided in the seam to divide it into segments 12, 14, 30, 32, 34, 36, 38, 40. In one embodiment, Fig. 1, the end portions 16, 18 of the belt are folded back upon themselves and held in place by stitching 20, 22. Interleaving clipper hooks 24, 26 are secured to the seam segments and a segmented cable 28 in the form of a series of flexible spaced-apart axially aligned rods or pins passes therethrough. The apertures 42, 44, 46 extend completely through the portions 16, 18 and are preferably diamond shaped but may be rectangular. In a further embodiment, Figs. 2 and 3 (both not shown), the end portions 58, 60 of the belt 50 are overlapped and joined by stitching 62, 64 optionally with the addition of adhesive, rivets, staples or lacing. Seam segments 52, 54, 56 are separated from one another by apertures 66, 68. In another embodiment, Fig. 4 (not shown), staggered seam segments 72, 74, 76, 78, 80, 82 are formed by folding back the end portions of the belt and securing by stitching 88, 90. Staggered slots 92, 94, 96, 98 are formed between the segments. One continuous cable 104 extends through clipper hooks 100, 102 secured to the segments. In a still further embodiment, Fig. 5 (not shown), the seam is similar to that of Fig. 1 but a flap in the form of a cover tape 110 stitched at 112 to the segments 14, 30, 34, 38 is provided to cover the hooks 24, 26.
Patent GB-1492086-A (GB)
Title: Process for the treatment of effluent from the synthesis of copper phthalocyanine
IPC: C09B47/04
Filed: 1975-10-03
Abstract: 1492086 Treatment of copper phthalocyanine process effluent BAYER AG 3 Oct 1975 [12 Oct 1974] 40587/75 Heading C4P The mother liquor obtained from the synthesis of copper phthalocyanine is adjusted to pH 3 to 9 and the precipitated products are separated. The process may be continuous. The copper phthalocyanine may be synthesized by the phthalic anhydride/urea process or processes using phthalodinitrile. The pH of the mother liquor is about 1. The precipitated products including copper salts, e.g. the hydroxide or basic copper salts, phthalimide and Mo may be recycled to the synthesis process to increase yield.
Patent GB-889748-A (GB)
Title: 2-ª--methoxyethylpyridine, manufacture thereof, and anthelmintic compositions containing it
Inventor: ARNALL PAUL
IPC: A61K31/00
Filed: 1959-12-01
Abstract: 889,748. Anthelmintic compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd., and MIDLAND TAR DISTILLERS Ltd. Oct. 31, 1960 [Dec. 1, 1959; Dec. 2, 1959; June 8, 1960], Nos. 40845/59, 40931/59 and 20099/60. Class 81 (1). [Also in Groups IV (a) and IV (b)] Anthelmintic preparations comprise 2-#- methoxyethylpyridine or a pharmaceutically acceptable salt thereof (including the complex with 3,3<SP>1</SP>,5,5<SP>1</SP> - tetrachloro - 2,2<SP>1</SP>- dihydroxydiphenylmethane) as active ingredient together with a pharmaceutically acceptable diluent or carrier therefor including adorbates of the base on ion exchange resins. The compositions may be for oral or parenteral use, may contain other veterinary drugs and/or minerals and in addition to inert diluents, fillers and disintegrating agents may contain bacteriostats, bactericidal agents, sporicidal agents, stabilizing agents, thickening agents, preservatives and pharmaceutically acceptable colouring agents. The preparations may thus be in the form of tablets, pellets, slugs or capsules, or aqueous or oily sterile solutions, and may contain cyanacethydrazide, phenothiazine, hexachlorethane, piperazine, 1 - diethylcarbamyl - 4 - methylpiperazine, carbon tetrachloride, 3,3<SP>1</SP>,5,5<SP>1</SP>,6,6<SP>1</SP>- hexaohloro - 2,2<SP>1 </SP>- dihydroxydiphenylmethane, 3,3<SP>1</SP>,4,4<SP>1</SP>,5,5<SP>1</SP>,6,6<SP>1</SP> - octachloro - 2,21 - dihydroxydiphenylmethane, copper sulphate, sodium bicarbonate or cobalt sulphate. Stabilizing agents may include hydroxylamine hydrochloride or sulphate, formaldoxime, ammonium salts or tin salts.
Patent GB-904587-A (GB)
Title: Device for checking the accurate location of the divisions of a divided circle
Filed: 1960-11-30
Abstract: 904,587. Optical scale-testing apparatus. HENSOLDT & SOHNE, OPTISCHE WERKE A.G., M. Nov. 30, 1960 [Dec. 8, 1959], No. 41089/60. Class 97 (3). Apparatus for checking the accuracy of the divisions of a divided circle 1, Fig. 1, comprises a base 3 on which a scalereading device 4 and autocollimating telescope 5 are fixed, and on which a turntable 2, carrying the circle 1, is rotatably mounted, the turntable 2 having detachably secured thereto, by electromagnets switched on and off by a switch 20, a carrier 6 for two sets of mirrors. As shown, one set of mirrors 7 1 , 7 2 , 73 are formed from the reflecting faces of a polygon 7, the second set being formed by the reflecting faces 81, 8 2 , 8 3  and 8 4  of a second polygon 8 having a different number of sides from the first one 7. In use, the faces 7 1 , 8 1  are aligned and made perpendicular to the axis of the telescope 5 by observing through the latter and the scale read through device 4. The turntable 2 is now rotated through 90 degrees, 180 degrees, 270 degrees, the telescope 5 being thus associated with faces 8 2 , 8 3 , 8 4  respectively and the scale reading on circle 1 checked in each position. The turntable 2 is rotated so that face 7 2  of polygon 7 co-operates with telescope 5 and the reading of 120 degrees on circle 1 is checked. Without moving polygon 7, polygon 8 is rotated so that face 8 1  is aligned with face 7 2  and then the turntable 2 rotated so that by means of faces 8 2 , 8 3 , 8 4  the 210 degrees, 300 degrees and 30 degrees positions can be checked. Then a similar procedure is effected using face 7 3 . In a modification, polygons 7, 8 are replaced by polygons having seven and six sides respectively, the six faces being separated by angles of 60 degrees and the seven faces being separated by 50 degrees in all cases except one, the latter being 60 degrees and the face being non-reflecting. Thus, angles of 10 degrees separation can be checked. In a modification, the polygon 7 is replaced by a mirror 11, Fig. 5, mounted on a base 10 in the manner of a sine bar so that by placing slip gauges between ball 13 and base 10 the mirror 11 may be set at any desired angle.
Patent GB-1150096-A (GB)
Title: Improvements in or relating to the treatment of waste cyanide-containing liquids
Inventor: NAKAMURA TAKAKATSU
IPC: C02F9/00
Filed: 1966-09-14
Abstract: 1,150,096. Treating cyanide wastes. TOYO INK MFG. CO. Ltd. 13 Sept., 1967 [14 Sept., 1966], No. 41134/66. Heading C1C. Effluents containing cyanides are treated with organic carbonyl compounds to eliminate the poisons. Ketones and aldehydes exemplified are acetone, methyl ethyl and methyl isobutyl ketones and cyclohexanone and formaldehyde, acetaldehyde and benzaldehyde, respectively. The products of the treatment may be further treated with air, HCl, NaOH or alkali sulphides.
Patent GB-1246181-A (GB)
Title: Incandescent electric lamps
IPC: H01K1/14
Filed: 1969-08-20
Abstract: 1,246,181. Incandescent lamps. USHIO ELECTRIC Inc. 20 Aug., 1969 [9 May, 1969], No. 41637/69. Heading H1F. The gas filling in a tungsten-filament lamp comprises chlorine, hydrogen and an inert gas such as argon or krypton, the chlorine being present in an amount between 2À5 : 10<SP>-7</SP> gm. atoms/cm.<SP>3</SP> and 2À5 : 10<SP>-6</SP> gm. atom/cm.<SP>3</SP>, and the atomic ratio of chlorine to hydrogen falling between 4: 10 and 4 : 5. The presence of hydrogen causes rapid heating of the walls of the envelope during switching-on of the lamp so reducing the'possibility of blackening; the wall temperature during operation should not however exceed 300‹ C. The hydrogen and chlorine may be introduced into the envelope in elemental form, as hydrogen chloride and hydrogen, as a chloride of carbon and hydrogen or as a chlorinated hydrocarbon with added hydrogen as necessary. In the latter two cases the carbon produced on decomposition of thechloride or hydrocarbon serves as a getter with respect to any free oxygen contained in the envelope as an impurity. In the example illustrated in Fig. 2, portions of the filament 2 are rendered non-operative by means of shortcircuiting rods 6 in order to achieve the uniformity of illumination in an axial direction required for copying machines. The filament is held by supports 4 and connected to molybdenum seals 3. The envelope is made of quartz. In an alternative embodiment, Fig. 1 (not shown), the shorting rods are omitted.
Patent GB-889473-A (GB)
Title: Improvements in or relating to a photographic exposure meter
IPC: G03B7/04
Filed: 1960-12-05
Abstract: 889,473. Measuring instruments. KODAK Ltd. Dec. 5, 1960 [Dec. 5, 1959], No. 41711/60. Class 37. [Also in Group XL (b)] The electric measuring instrument of an exposure meter is in a hermetically-sealed housing which is rotatable relative to fixed frame members of a camera. Meter 1 carrying pointers 4, 5 is pivoted at 2 in a transparent sealed plastic housing journals of which cooperate with fixed bearings 6a, 7a. The housing is rotatable according to various exposure factors by rotating gear 8 which co-operates with gear 3h integral with the housing.
Patent GB-1338466-A (GB)
Title: Image-receiving materials for use in silver salt diffusion- transfer photography
IPC: G03C8/06
Filed: 1971-09-07
Abstract: 1338466 Photographic transfer material FUJI PHOTO FILM CO Ltd 7 Sept 1971 [7 Sept 1970] 41736/71 Heading G2C A dry image-receiving material for subsequent use in a silver salt diffusion-transfer photographic process comprises a support coated with an image-receiving layer containing a dispersion of development nuclei in a hydrophilic binder and optionally one or more adjacent layers, one or more of the receiving and/or adjacent layer including therein an amine of formula: R 1 R 2  N-C n H 2n OH (in which n is 1-5; R 1  and R 2  are each H, carboxylic acyl, allyl, carbamyl, 1-5C alkyl, or 1-5C substituted alkyl in which the substituent(s) is or are selected from OH, halogen and alkenyloxy; or R 1  and R 2  together complete a 6-membered mononuclear heterocyclic ring system.
Patent GB-899697-A (GB)
Title: Process for preparing alkyl and aryl lead compounds
IPC: C07F7/24
Filed: 1960-12-05
Abstract: Alkyl and aryl lead compounds are prepared by reacting a lead-sodium alloy with an alkyl or aryl halide in the presence of at least 0.02% of the weight of the alloy of at least one of the following compounds; furan, a -methylfuran, a ,a 1-dimethylfuran, tetrahydrofuran, coumarone, coumaran and dibenzofuran.  It is preferred to use between 0.02% and 2% based on the weight of the alloy.  The mass after reaction may be further reacted with an appropriate Grignard compound to increase the yield of lead product. Conventional promoters and catalysts may additionally be present.
Patent GB-1347187-A (GB)
Title: Electronic timer
IPC: H03K17/28
Filed: 1972-09-08
Abstract: 1347187 Timing circuit PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 8 Sept 1972 [11 Sept 1971] 41802/72 Heading H3T [Also in Division G2] A timer comprises a transistor, the collector of which is connected to a capacitor to charge or discharge the capacitor at a constant current, the emitter being connected to one end of a linear potentiometer, the other end of which is connected to the base and the wiper is connected to a supply line, there being a further resistor between the other supply line and the base and a switching device coupled across the capacitor. The ratio of the resistance between the wiper and base and the resistance between the base and said other supply line is limited to no more than 1À3. The capacitor 14 may be previously charged by a supply at 17, 18 and discharged by the transistor 12 or the capacitor may be charged by the transistor (Fig. 2, not shown). The voltage across the capacitor is sensed, such as by placing a relay coil 16a in parallel with the capacitor, until it reaches a level to alter the state of the sensor. The relay may be connected via a threshold switch (61) to the capacitor in the "charging" mode of operation and the capacitor discharged at the end of the period by a shunted resistor. The linear potentiometer 8 varies the rate of charge or discharge in a logarithmic fashion. The relay may operate a lamp in photographic exposure apparatus.
Patent GB-1246797-A (GB)
Title: A method and apparatus for positioning pre-set cutting tools in machine tools
Inventor: HARKNESS LESLIE
IPC: B23Q17/22
Filed: 1967-09-15
Abstract: 1,246,797. Setting-up machine tools. WARNER SWASEY ASQUITH Ltd. 3 Sept., 1968 [15 Sept., 1967], No. 41809/68. Divided out of 1,246,796. Headings B3B and B3T. A method of locatably positioning pre-set cutting tools in a machine tool, such as a lathe, which has a cross-slide and a turret comprises the steps of establishing a datum plane transversely of the machine tool, bringing a surface of the turret or part 332 mounted thereon to the datum plane, positioning a datum surface transfer member 322 with a transfer surface thereof lying on the datum surface of the turret or part 332, adjusting tool locating means 300 on the cross-slide to engage the transfer surface of the transfer member and positioning a pre-set cross-slide cutting tool on the cross-slide at a predetermined distance from the locating means. The cutting tool is pre-set in a jig as described in Specification 1,246,796.
Patent GB-949116-A (GB)
Title: Vane ring for cyclone dust separators
IPC: B04C5/06
Filed: 1961-11-24
Abstract: 949,116. Centrifugal separators. METALLGESELLSCHAFT A.G. Nov. 24, 1961 [Nov. 24, 1960], No. 42163/61. Heading B2P. Dust-laden gas is swirled in a cyclone separator by means of a lattice of equidistantly spaced, inclined guide vanes S, Fig. 1, arranged between two annular members Ka, Ki and each attached to the outer member Ka by a thickened foot portion R, Fig. 3. The members Ka, Ki are respectively secured by sleeves Ma, Mi to the separator tube A and a central outlet duct Z and have thickened pear-shaped sections defining between them an annular truncatedcone-shaped channel in which the vanes S are located. In a modification, Fig. 4, the vanes S are attached only to the outer member Ka which is suspended in the tube A and has a flange F secured by bolts Sch to the separator casing. The member Ki may be reciprocated, e.g. by springs or a shaker mechanism, to produce impacts against the vanes so as to dislodge dust deposits accumulated on them. Springs B may be inserted on the bolts to increase the vibrations caused by the impact.
Patent GB-1043190-A (GB)
Title: Improvements in an implement hitch for a tractor
IPC: A01B59/06
Filed: 1963-10-25
Abstract: 1,043,190. Tractor power lift mechanisms. INTERNATIONAL HARVESTER CO. Oct. 25, 1963 [Dec. 10, 1962], No. 42170/63. Heading A1P. Lateral sway in a tractor power lift linkage is limited by a device 36 comprising two rotatable parts 50 having interengaging stops 52 each part 50 being secured to an extension member 48 which is connected to a respective draft link 18 by an adjustable stay 54. When the linkage sways to one side, the parts 50 are rotated, by the stays 54, in relatively opposite directions until the stops 52 abut to prevent further movement. Lateral sway can be completely prevented by securing the parts 50 against rotation i.e. by a pin 68 (Fig. 3, not shown) passing through members 66. The draft links are extensible and held in place by a latch 24. In an embodiment in which draft sensing means are incorporated in the draft links the pivot 44 of the device 36 is supported on two arms pivoted to the tractor; these arms also supporting two draft link mounting beams which are longitudinally slidable with respect to the tractor.
Patent GB-1475389-A (GB)
Title: Protective circuit for field effect transistor amplifier
IPC: H03F1/52
Filed: 1974-10-03
Abstract: 1475389 Transistor amplifying circuits SONY CORP 3 Oct 1974 [5 Oet 1973] 42982/74 Heading H3T In an amplifier using field-effect transistors, means are provided for detecting overload so that the input signal is then applied directly to the output load, without variation of the bias being caused thereby. The embodiment is a parallel-push-pull amplifier using FETs (Figs. 1-5, not shown) with triode characteristics arranged as a class B complementary output stage with load Z L  and driven via a biasing network 12 from a pre-amplifier stage 11. Network 12 comprises a first network 12a for biasing transistors F1b, F2b and a corresponding second network 12b for biasing transistors F1a, F2a. Biasing network 12a comprises a bias potentiometer form by resistors R3a, R4a and diode D1 which determines the bias on and current in a transistor Q1a. The collector potential of this is determined by the ratio between resistors R1a, R2a and forms the bias for emitter-follower Q2a which biases the FETs F1b, F2b; the signal input from terminal t 2  is applied to the base of transistor Q2a via capacitor C1a. The biasing network 12b for the FETs F1a F2a is similar, but resistor R4b is made variable so that the standing bias is adjustable. Resistor 25 and capacitor 26 provide overall negative feedback. This biasing arrangement is disclosed in Specification 1,474,744. Overload protection circuit.-The currents in FETs F1a, F2a produce corresponding voltages across resistors R9a, R10a which charge capacitor C3a via diodes D4a, D4a<SP>1</SP> respectively: if the load Z L  is of normal value, however a balancing voltage is fed to the capacitor via resistor R7a and diode D3a, and the effective charge is zero. If however, the load Z L  is excessively small, e.g. a short-circuit occurs, the balancing voltage is not produced, capacitor C3a charges up, and transistor Q4a is biased conductive the charging being responsive to both the current in and voltage across the load. Transistor Q3a is thereby biased conductive and connects the input terminal t 2  to the output via diode D2a which prevents Zener action in transistor Q3a; the drive to the output FETs is thereby removed. A second protective circuit 14b corresponding to the first circuit 14a operates on negative-going signals.
Patent GB-1248188-A (GB)
Title: Pigeon loft safety door
Inventor: REYNOLDS RICHARD ROBERT
IPC: A01K31/02
Filed: 1970-09-09
Abstract: 1,248,188. Pigeon loft safety door. R. R. REYNOLDS. 9 Sept., 1970, No. 43088/70. Heading AIM. In a safety door for a pigeon loft or the like, sliding door 9 is biased to the closed position (to the right as illustrated) by spring 13 operating linkage 11, but is prevented from closing by stop 8 engaging abutment 16 on lever 5. The door is released when a sufficient load is applied on platform 2 to depress it and turn lever 5 about axis 6 against spring 15. The tension of spring 15 is set so that the weight of a pigeon does not release the door but a heavier predador does. The right hand end of the framework is partly cut away to reduce damage to any pigeon passing through when the door is released.
Patent GB-1218666-A (GB)
Title: A diode
Inventor: BOWER ROBERT WILLIAM
IPC: H01L21/00
Filed: 1968-09-11
Abstract: 1,218,666. Semi-conductor devices. HUGHES AIRCRAFT CO. 11 Sept., 1968 [28 Sept., 1967], No. 43139/68. Heading H1K. A varactor diode is formed by providing a rectifying contact 14 on an N(P)type ioninplanted surface region 12 of an N(P)type semi-conductor wafer 10 which also carries an ohmic contact 16. It is stated that such a device exhibits a very large variation of capacitance with applied voltage. The wafer 10 may be of N type GaAs or Si, in which case Te ions used to produce the region 12 and the contact 14 is of evaporated Au or Pt. The ohmic contact is then of Au/Sn alloy. If P type material is used the rectifying contact 14 may be of Al or Mo. The region 12 may be formed from ions of two or more different energies, resulting, for example, in the production of a concentration profile as shown in Fig. 5 if three energies are used. Since the capacitance of the device is relatively insensitive to applied voltage when the depletion region of the contact 14 extends to the vicinity of the concentration " troughs " 25, 27 a digitalized voltage-tunable capacitor is produced.
Patent GB-939329-A (GB)
Title: Improvements in carburation apparatus
Inventor: MENNESSON ANDRE LOUIS
IPC: F16L23/024
Filed: 1961-12-04
Abstract: 939,329. Pipe joints. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES S.I.B.E. Dec. 4, 1961 [Dec. 29, 1960], No. 43307/61. Class 99(1). In a carburation apparatus comprising a suction conduit 1 of a metal having a low melting point and which is to be secured by a flange 4 to a pipe 3 heated to a high temperature, the flange 4 consists of a metal plate having a melting point higher than that of the metal forming the conduit 1 and the latter and the flange are united by anchoring means located in the vicinity of and as close as possible to the inner wall of the conduit. As shown in Figs. 3 and 4, the flange is formed with upturned tongues 5 embedded, during casting, in the conduit. In modifications, (a) the flange has an embedded upturned inner peripheral portion, circular in cross-section, and (b) the flange is formed with an upward projection 9, Fig. 7, provided with a groove 10 into which the metal of the conduit penetrates.
Patent GB-952784-A (GB)
Title: Improvements in and relating to a regulating device for the controlled recycling of exhaust gases into the air intake pipe system of a diesel engine
IPC: F02M1/00
Filed: 1961-12-05
Abstract: 952,784. Engines using recycled exhaust gases. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. Dec. 5, 1961 [Dec. 24, 1960], No. 43452/61. Heading F1B. Exhaust gases recycled to the air intake pipe 9 through a pipe 5 are controlled by means 11a responsive to the temperature of the mixture of fresh air and recycled gas. The gases are controlled by a butterfly valve 8 actuated by a thermostat 11a. The valve 8 may be loaded by a spring 14, by a weight, or by hydraulic, pneumatic, magnetic, or electrical means.