baber/WOPTO huggingface dataset:
Patent GB-1178735-A (GB)
Title: Catalytic Conversion of Tetralin, Indan and other Materials
IPC: C07C13/58
Filed: 1967-03-15
Abstract: 1,178,735. Cyclic hydrocarbons. SUN OIL CO. 15 March, 1967 [15 March, 1966], No. 12144/67. Addition to 1,024,500. Heading C5E. The following hydrocarbon conversion reactions are carried out in the presence of HF and BCl 3  in amounts of at least 5, and at least 0À5 moles, respectively, per mole of starting material:- (1) tetralin to (a) sym-octahydroanthracene and sym-octahydrophenanthrene together with benzene at 15-130‹ C., or (b) a mixture of phenyltetralylbutanes, the -6 isomer predominating, at - 100‹ to 15‹ C.; (2) indane to (a) as-hydrindacene together with benzene at 40‹ to 120‹ C., or (b) a mixture of phenylindanylpropanes, the -4 isomer predominating, at - -20‹ to 80‹ C., or (c) 1-(4-ashydrindacene) - 3 - phenylpropane together with benzene at 20‹ to 150‹ C.; (3) phenyltetralylbutane to octahydroanthracene and octahydrophenanthrene at 15‹ to 130‹ C.; (4) phenylindanylpropane to as-hydrindacene at 40‹ to 120‹ C. Similar reactions to the above may also be carried out starting from 1,2,3,4-tetrahydroanthracene, 1,2,3,4 - tetrahydrophenanthrene, 1,2,3,4,9,10 - hexahydroanthracene and benz- [f]indan. Products of the above reactions may be subjected to the following further reactions:- (A) phenyltetralylbutane may be converted to octahydroanthracene and octahydrophenanthrene by contact with either HF/BCl 3  (i.e. reaction 3 above) or HF/BF 3 ; (B) phenylindanylpropane may be converted to as-hydrindacene by contact with HF/BCl 3  (i.e. reaction 4 above) or HF/BF3; (C) sym-octahydroanthracene and sym-octahydrophenanthrene may be separated by distillation and/or crystallization, and either may then be isomerized to the other under appropriate conditions using HF/BCl 3  or HF/BF 3  catalyst; (D) sym octahydroanthracene and syw-octahydrophenanthrene may be dehydrogenated to anthracene and phenanthrene, respectively, by passage over a selenium catalyst at 325‹ C. In reaction (C), trans-syn-trans-perhydroanthracene and dodecahydrotriphenylene may be obtained as by-products when isomerizing sym-octahydroanthracene to sym-octahydrophenanthrene.
Patent GB-289641-A (GB)
Title: Improvements in pneumatic floats for fishing nets and like purposes
IPC: A01K75/04
Filed: 1927-05-06
Abstract: 289,641. Young, J., and Whiteford, B. H. May 6, 1927. Drawings to Specification. Buoys.-Pneumatic floats have a cover and one or more inflatable bags conforming to the shape of the cover. The floats may be of the following shapes :-whip-top, peg-top, pear, inverted cone, cylinder with one or both ends pointed, sphere or hemisphere. The floats may be made of cured or vulcanized rubber.
Patent GB-542775-A (GB)
Title: Improvements in winding and tensioning means for releasable cables and steel tapes, such as are used for supporting and releasing bombs on aircraft
IPC: B64D1/04
Filed: 1940-07-26
Abstract: 542,775. Tensioning device. STONE & CO., Ltd., J., and HATCHER, E. C. July 26, 1940, No. 12193. [Classes 78 (ii) and 78 (iv)] [Also in Group XXI] Tensioning means for use with cable or tape slings such as are used for supporting bombs in aircraft comprises a winding drum and a ratchet mechanism, so that the tension may be adjusted by operating the drum to tension the cable and the drum may be released to allow free unwinding of the cable when required. A twoeyed bracket 2 is secured to the aircraft to form an abutment for the surface of the bomb 1, and one end of the sling cable 3 is releasably secured; to one eye of the bracket at 4, while the other end is attached to a tensioning device 5 which in turn is attached to the other eye of the bracket. The tensioning device comprises a multi-slotted drum 16 rotatably mounted on the hollow shaft 10 with a ball bearing 8 in a casing end 6, and carrying a rotatable head 27 on its other end which runs in ball bearing 9 in the other casing end 7. The shaft is adapted to be rotated for tensioning the cables after the bomb has been positioned by a hand driven worm and worm wheel 13, 12 and transmits its rotation to the drum through a releasable friction ratchet 28, 34 and epicyclic gearing 25, 26 ; a spring 20 attached to both the drum and the casing may be used and tensioned during this tensioning movement. The sling is thus held under tension the worm drive being irreversible, and when a spring is used and the bomb is released, the sling is automatically rewound on the drum by the spring 20. The sling can be pulled out from the tensioning device when positioning further bombs by releasing the friction clutch 28, 34 by rotation of the handplate 32, stops 34 on which press the clutch balls 29 out of contact with the friction surface. The end of each cable is secured in a two part grooved clamp 38 for attachment to the eye of the bracket 2. In a modification the tensioning device is pivotally mounted at 44. Fig. 8 on a bowed arm 45 pivoted at one end to an eye of the bracket 2 and carrying at its other end an adjusting screw 47 whereby the sling is tensioned, the worm drive for the shaft 10 being in this arrangement unnecessary. In a further modification the tensioning device is directly adjustably connected to the eye of the bracket 2 instead of through the bowed arm 45.
Patent GB-1461608-A (GB)
Title: Process for the production of hydrophobic starch esters
IPC: C08B31/04
Filed: 1974-03-19
Abstract: 1461608 Hydrophobic starch esters COOPERATIEVE VERKOOP - EN PRODUCTIEVERENIGING VAN AARDAPPELMEEL EN DERIVATEN AVEBE GA 28 Feb 1975 [19 March 1974] 12203/74 Heading C3U A process for preparing hydrophobic starch esters comprises reacting together, in the presence of an alkaline catalyst, ungelatinized starch and a compound represented by the formula in which R is a cycloalkyl, aryl, substituted aryl or aryl-alkyl radical or benzyloxycarbonyl and X is either a salt-forming ion or hydrogen, the reaction conditions being such that no gelatinization of the starch granules occurs. The compound used is preferably a benzoyl thiosulphate salt or a benzyloxycarbonyl thiosulphate salt.
Patent GB-458728-A (GB)
Title: Improvements in and relating to fastening devices for doors
IPC: E06B5/14
Filed: 1936-04-29
Abstract: 458,728. Door hinges and fastenings. RIEGER, M., 108, Berliner Strasse, Wilmersdorf, Berlin. April 29, 1936, No. 12240. Convention date, April 30, 1935. [Classes 44 and 65 (ii)] A fastening device which may also function as a hinge, and particularly for doors which may be required to make airtight closure, allows the door to bear lightly on its seating during normal opening and closing operations but to be tightened on its seat when required. If required, the door may be entirely released and bodily removed. Fig. 1 shows two devices arranged near each edge of a door a provided with rubber strip or tube packing b adapted to bear against the fixed frame c. Each device comprises a vertically moving bolt or hinge-pin f with conically reduced lower extremity h, guided in a socket member d and raised or lowered as required by pivoted handles l inside and outside the door. A fixed bracket e having a circular hole of the same diameter as the cylindrical portion of member f underlies or supports socket d when the door is closed. Normally, the conical portions of the bolts engage the holes in brackets e so that the connection is loose and the door seats lightly. To tighten the door on its seat the handles are raised to depress the bolts so that their cylindrical portions engage in the holes. To release the door at either or both edges, the corresponding handles are depressed to raise the bolts clear of the brackets. Removable screw stops m may be used to limit handle-movement at the hinged edge of the door, so that this edge can only be completely released after removal of the stops.
Patent GB-1413225-A (GB)
Title: Arrangement provided with a gas and or vapour discharge tube
IPC: H05B41/18
Filed: 1973-03-14
Abstract: 1413225 Control systems for gas discharge tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 March 1973 [17 March 1972] 12244/73 Heading H2H A starting and operating circuit for a low pressure gas discharge tube 5 comprises a capacitor 3 and an inductor 4 connected in series with the electrodes 6, 7 of the tube and a glow discharge starter device 25 across terminals 1, 2 of an A.C. supply, an auxiliary circuit including a thyristor 14 being provided by means of which a high voltage is generated whereby to assist the starting of the tube 5. When an A.C. source is connected to the terminals 1, 2 a capacitor 16 charges, by way of a diode 12 and resistor 16 until the breakdown voltage of a diac 17 is reached, upon breakdown of which the thyristor 14 is gated into conduction whereupon capacitor 3 is charged. In the succeeding halfcycle of the A.C. source the voltage applied to the inductor 4 and lamp 5 is double the peak value of the A.C. source. The glow discharge device 25 then ignites and current flows in the circuit 3, 4, 6, 25, 7 to bring the electrodes 6, 7 to emission temperature. After a period the contact of the glow discharge open thus inducing a high voltage peak in the inductor 4 so igniting the tube 5. After the tube has ignited the circuit conditions are such as to render conducting a transistor 20 thus inhibiting charging of the capacitor 16 and firing of the thyristor 14. By connecting the auxiliary circuit to the point 10 in the tube circuit, the auxiliary circuit is rendered ineffective should the tube be removed. Apparatus of the kind described does not require the device 25 to satisfy critical voltage requirements.
Patent GB-542252-A (GB)
Title: Improvements in two-way transmission systems
IPC: H04M1/58
Filed: 1940-07-31
Abstract: 542,252. Loudspeaker substations. ASSOCIATED ELECTRIC LABORATORIES, Inc. July 31, 1940, No. 12374. Convention date, Aug. 14, 1939. [Class 40 (iv)] In a loud-speaker substation, the discharge through a hot-cathode gas-filled tube in response to speech in one path provides control voltages for enabling a normally disabled tube in the amplifier of that path and wholly or partially disabling a normally operative tube in the amplifier of the other path. In one arrangement, Fig. 1, the sending amplifier is normally inoperative because the screen of the final tube 111 is grounded via resistance 150 in the anode current of a gas-filled tube 156, which at the time is not passing current, and the receiving amplifier is similarly disabled. When the microphone is spoken into, however, speech currents are rectified by a tube 165 and applied to the control electrode of tube 156 which breaks down. The appropriate screen voltage is thus applied to tube 111 and at the same time a disabling voltage is applied to the cathode of the first receiving tube 136. This action takes place very rapidly. When speech ceases, a relay 168 in the rectifier anode circuit restores the gas-filled tube by momentarily opening its anode circuit. This relay is made sluggish to prevent syllable clipping and may be a differential relay associated with a condenser and resistance as shown in Fig. 1a. Incoming speech acts similarly on a separate control circuit to control the second tube of the receiving amplifier and the first tube of the sending amplifier. In a modification, Fig. 2 (not shown), the normal disablement of the last tubes of the amplifiers is caused by over-biassing the signal grids. In a further modification, Fig. 3, in which the control of the amplifiers is by their signal grids, metal rectifiers are used for controlling the gas-filled tubes. These receive their anode supply from a A.C. source 386 of ultra-audible frequency so that no separate means is needed for interrupting the discharge when speech ceases. Additional bias may be given to the gas-filled tube of one path from the resistance 372 or 384 of the other to prevent its actuation by unbalance currents.
Patent GB-164593-A (GB)
Title: Improvements in or relating to expansion joints for pipes
IPC: F16L27/12
Filed: 1920-05-05
Abstract: 164,593. Walker, W. H. May 5, 1920. Addition to 152,091. Expansion joints.-In joints of the character described in the parent Specification, packing capable of expanding in a radial direction is interposed between the pipe sections and sleeves comprising circumferentially intact rings g and split rings h confined between a sleeve c secured to the pipe section a and the bush d attached to the outer section b, the rings being pressed together by a spring e bearing against a follower f. A ring j attached to the outer pipe section serves as an abutment for the tubular holder containing rings g', h<1> and follower f<1> and spring e<1>. A similar tubular holder m with packing rings g<2>, h<2> is arranged directly between one end portion of the outer section b and inner section a.
Patent GB-698832-A (GB)
Title: Improvements in or relating to magnets for measuring instruments
IPC: G01R1/16
Filed: 1951-05-28
Abstract: 698,832. Permanent magnets. V.D.O. TACHOMETER AKT.-GES. May 28, 1951 [May 26, 1950; July 8, 1950], No. 12526/51. Class 35. [Also in Group XXXVI] A permanent magnet for use in measuring instruments is made of a ring or rings of magnetic wire having poles equally spaced around the periphery, preferably the wire having enhanced magnetic properties along its length. The magnet may comprise a single ring or a stack of rings a as shown, with the poles placed at b and c. Alternatively a spiral or a series of gapped rings may be used.
Patent GB-671389-A (GB)
Title: Improvements relating to recording and/or control apparatus
IPC: G05B1/02
Filed: 1949-05-11
Abstract: 671,389. Electric follow-up systems. FIELDEN (ELECTRONICS), Ltd., and FIELDEN, J. E. May 1, 1950. [May 11, 1949] No. 12533/49. Class 40 (i). [Also in Group XL (c)] Apparatus for recording the reading of a meter, comprises a metal vane b attached to the pointer a of the meter, associated with a further metal vane d carried by a motor-driven arm c, the capacity between the vanes being fed into an oscillatory circuit associated with a valve V1, whereby when the inter-vane capacity is .less than that of a condenser C1, valve VI oscillates, causing a negative voltage across a condenser C2 to block a thyratron valve V2, while the anode current flowing through a transformer T1 causes a motor m to drive arm c in one direction. When the vanes b, d are however close together, valve VI stops oscillating and thyratron V2 fires, allowing current through T1 in the opposite direction, reversing the rotation of motor m. Thus the arm c is maintained in close proximity to the pointer a. The motor m also drives an arm h carrying a recorder i, and may also drive a switch arm k for control purposes.
Patent GB-352584-A (GB)
Title: Improvements in or relating to expanded metal and other sheets, and processes for manufacturing such improved sheets
IPC: B21D31/04
Filed: 1930-04-23
Abstract: 352,584. Expanded metal work. KAMINETSKY, M., 22, Vreeland Avenue, Passaic, New Jersey. U.S.A. April 23, 1930, No. 12603. [Class 45.] Expanded sheet metal &c. is produced by forming rows of slits 6 in the material 5 and expanding the slit portions into open portions 8 connected by bridge portions 9 without increasing the dimensions of the sheet by forming corrugations 7 between the rows of slits to partly expand the slits and then forming other corrugations 12 to complete the expansion.
Patent GB-595026-A (GB)
Title: Improvements in or relating to the construction of roofs and their supports
IPC: E04B1/19
Filed: 1945-05-18
Abstract: 595,026. Pyramidal roof structures; ventilators. THOMAS, M. H., and UNITED DAIRIES, Ltd. May 18, 1945, No. 12631. [Classes 20(ii), 20(iv) and 137] [Also in Group XI] A roof structure is formed of a number of pyramids each comprising frame members forming the base, an apex junction member and rafters converging from the base to the apex member, and a rigid coupling directly connecting the apex members of each two adjacent pyramids. As shown in Fig. 2, each pyramid has an apex junction member 20 which receives the ends of rafters 22 and coupling members 24, and a square base 21 one side of which is common to two adjacent pyramids, and the structure is supported at some of the corners by members 25. The base of each pyramid may alternatively be of triangular, hexagonal or other form. Each junction member comprises an open cylinder 31, Fig. 11, having a ventilating louvred cowl 34 surrounded by a ring 35 above it and an octagonal portion below it. The part 31 has four screw-threaded bosses 29 to which threaded ends of the tubular coupling members 24 may be secured by right and left hand threaded sleeves 30, the bosses being fitted with end covers 32 when not so used. The octagonal portion comprises four long sides 36 alternating with short sides 37. The sides 36 have flanges 38 for supporting lighting casings 70 (see Group XI) the other ends of which are supported on flanges 75 provided at intervals on the sides 53 of gutters 52 forming the base of the pyramid. The sides 37 have similar flanges (not shown) for supporting the ends of rafters 60, Figs. 6 and 9, extending down to a corner of the base of the pyramid. These rafters each comprise a T- member, with base flanges 61 to support a roof covering 62 which is held in place by a resilient capping strip 65. A longitudinal groove in the base of the rafter receives the web 42 of a supporting member 25 which, as shown in Fig. 6, comprises two tubes connected by the aforesaid web and strengthening struts 46, the tube 40 forming a drainpipe and the tube 41 and web 42 being curved so as to extend along the roof to the apex. These tubes are joined at the bottom by a U-shaped member 43 received in a bearing 44 allowing the support member to rock. The corner gutter member, which may connect two, three or four gutters, has a tubular part 57 joined to the top of the tube 40, and a bridge 66, supported by a strut 68, having an upstanding web 67 forming a continuation of the web 42 and receiving the lower end of the rafter 60. The members 41, as well as the apex junction members, bosses 29 and coupling members 24 may serve as housings for electric cables. In a modification, Fig. 16, the apex junction members are reversible and may be used either at the apex of a pyramid or at the corner of its rectangular base. Each member has two vertically spaced sets of slots 79 to receive the ends of I-section frame members.
Patent GB-512169-A (GB)
Title: Improvements in and relating to ventilators, air diffusers and the like
IPC: F24F13/065
Filed: 1938-04-28
Abstract: 512,169. Ventilators. JOHNSTON, N. F. April 28, 1938, No. 12684. [Class 137] In a ventilator of the kind comprising a spherical member with an air passage therethrough and carried in a socket or by trunnion pins so that it may be adjusted, the flow of air through the passage is controlled by means located within the spherical member. The ventilator comprises essentially a ball member 1 having a passage 2 extending therethrough and terminating in a short outlet trunk 2a, the ball being rotatable in a socket 3. Fig. 1 shows an adjustable cover 32 inside the ball member, the trunk 2 having hinged to it a rod 31 terminating at one end in the cover plate 32, and at the other in a handle 33 by rotation of which the opening to the trunk may be uncovered. In modifications, the sliding cover plate 32 may be replaced by flap valves. In Fig. 4 is shown a cover 39 carried by a rod 40 in a spider 41, the cover being moved up and down to control the air entering the trunk 2. Specification 495,312 is referred to in the Provisional Specification.
Patent GB-802144-A (GB)
Title: Improvements in controls for aircraft engines
IPC: F02C9/28
Filed: 1955-05-02
Abstract: 802,144. Gas turbine plant. HOBSON, Ltd., H. M., GREENLAND, L. S., McCOURTY, W. D., and JOHNSON, V. H. March 6, 1956 [May 2, 1955], No. 12697/55. Class 110 (3). [Also in Group XXIX] A control unit for preventing the supply of excessive fuel to a gas turbine engine during acceleration comprises a fuel metering valve controlled by the compressor delivery pressure of the engine and a pressure-regulating valve arranged to prevent the pressure drop across the metering valve from exceeding a predetermined value. In an embodiment, the metering valve 15 is carried by a spring-loaded servo-piston 14 above which is a chamber 7 connected through a filter 19 and restricted orifice 5 to the inlet 1 of the unit and provided with.an escape passage 6 controlled by a valve member carried by a pivoted beam 8 which is loaded by springs 10, 11 and acted upon by an evacuated capsule 9 having a negative rate and subject externally to compressor delivery pressure admitted through an opening 24. The spring 12 that loads the servo-piston 14 reacts on the beam 8 which carries a sealing ring 18 and is pivoted on ball bearings (not shown) about an axis passing through the sealing ring 18. To avoid obstruction to the fuel flow on starting or when the unit has failed the metering valve is waisted at 27 so that a clear passage for the fuel is presented when the metering valve is urged downwardly against a stop 17 by the spring 12. By suitably profiling the metering valve any desired relation between maximum fuel flow and compressor delivery pressure may be ob tained. A valve member 3 situated at the outlet of the metering valve is urged towards open position by a spring 21 and in the opposite direction by the pressure drop across the metering valve acting on a diaphragm 28. The valve member 3 acts to throttle the flow in the event of the said pressure drop exceeding a certain value. In a modification, the valve member 3 is of double beat construction. Specification 802,143 is referred to.
Patent GB-1030801-A (GB)
Title: A process for the production of polypeptide fibres
IPC: D01F6/68
Filed: 1964-01-10
Abstract: Polypeptides are made by polymerization of the N-carboxy anhydrides of a -amino-acids made by reacting the latter with phosgene. During the treatment with phosgene any carboxyl or amino-groups present in the amino-acid molecule but not useful in the reaction may be protected, e.g. by esterification of carbonyl and acylation of amino-groups.  The product may be the D-, L- or DL-polymer in the case of an optically active monomer.  In Examples (1) L-amine is suspended in tetrahydrofuran and phosgene blown in at 43 DEG  C.  Dry nitrogen is blown in to remove excess phosgene.  The product is dissolved in a benzene:  1,4-dioxane mixture and then polymerized at 50 DEG  C.  After evolution of carbon dioxide has ceased, the white precipitate of poly-L-alanine is filtered, washed with methanol and with water and dried; (2) DL-alanine is treated as in (1) to obtain a DL-alanine copolymer; (3) the N-carboxyanhydride g -methyl - L - glutamate is polymerized together with the N-carboxyanhydride of L-alanine to give a copolymer of L-alanine and g -methyl-L-glutamate.
Patent GB-149786-A (GB)
Title: Improvements in collapsible cases, crates and the like
IPC: B65D6/16
Filed: 1919-05-21
Abstract: 149,786. Rand, F. R. May 21, 1919. Knock-down boxes.-The ends of collapsible cases, crates, &c. are separately hinged to the bottom; the front, rear, and top are all jointed to diagonal frames which themselves are hinged to the bottom, beyond the ends. The end a is hinged directly to the bottom c, as shown in Fig. 2. A diagonal frame e, Fig. 3, is hinged to the bottom at d. The front f is hinged to this frame at g, the back i at l, and the top h at k. Spring catches m lock the parts in position. The top may be secured to the front by screws n which screw into a socket in the top h and pass through a slot in a flanged plate p on the front f.