baber/WOPTO huggingface dataset:
Patent GB-1327007-A (GB)
Title: Anionic polymerisation of lactams
IPC: C08G69/20
Filed: 1972-05-11
Abstract: 1327007 Anionic polymerization of lactams AQUITAINE TOTAL ORGANICO 11 May 1972 [14 May 1971] 22169/72 Heading C3R In an anionic polymerization of a lactam, a compound containing at least one cyanate group is used as activator. Per 100 moles lactam, there may be 0À05-5 moles activator, which may be R-O-C#N or where R and R' may be aliphatic or aromatic groups; e.g., phenyl or ethyl cyanate. The lactam may contain 4-12 C atoms in the ring. The polymerization may be performed at 100-, 200 C., in bulk, in a mould, in an organic solvent e.g., hydrocarbons or ethers, or in the presence of a dispersal agent, e.g., polyamide powder or silica agent, or a polymer, e.g., poly-propylene, -styrene, -ethylene, -acetal, or -amide. The activator may be added gradually. Per 100 moles lactam, there may be 0À1-5 moles catelyst, e.g., a lactamate, hydride, alcoholate, or alkyl compound of an alkali or alkaline-earth metal, Al, Zn, or Mg. The lactam may be melted, and the catalyst and activator stirred in; or part of the lactam may be mixed with catalyst, and part with the activator, both parts then being mixed together. After mixing, the mixture may be heated to polymerization temperature. Also present may be asbestos, glass fibre, MoS 2  lubricant, or carborundum, or graphite. The product may be obtained as a powder of grain size 20 Ám.
Patent GB-393794-A (GB)
Title: A device for reducing the expenditure of power for cooling aircooled radial-cylinder internal combustion engines
IPC: F01P7/02
Filed: 1932-08-08
Abstract: 393,794. Cylinders. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Aug. 8, 1932, No. 22199. Convention date, Aug. 8, 1931. [Class 7 (ii).] A closed stream-lined casing 5 covers each cylinder of a radial-cylinder engine and provides passages 7, 10 for the cooling air, which is supplied by a blower. The casing 5 is forked in two parts, embracing the cylinder, and clamped together in the axial plane perpendicular to the plane of the paper, and comprises also inlet and exhaust passages 6, 4. Ports 8, 9 in an inner wall of the casing have edges diverging upwards so that more air is admitted to the passages formed by the fins at the head end of the cylinder. Doors 18, closed by springs 19, provide access to the liquid-fuel injector, the sparking plug, and the starting valve.
Patent GB-281771-A (GB)
Title: Improvements in or relating to shoe-upper stiffeners
IPC: A43B23/08
Filed: 1926-09-09
Abstract: 281,771. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). Sept. 9, 1926. Waterproofing; proofing compositions.-A shoe upper stiffener comprising a felt or other fibrous base impregnated with a resinous thermoplastic compound is characterized by the inclusion of an already thickened drying oil. Another feature comprises the use of wax in addition. Preferably, the composition includes a smaller quantity of wax than resin, and a still smaller quantity of drying oil. The ingredients may conveniently include a base of the character of lime, magneslum oxide, zinc oxide, or equivalent. Acid resins may constitute 80 per cent, wax. such as montan wax, 15 per cent, a base 2 per cent, and drying oil 3 per cent of the total. A specifio example comprises 4,400 pounds of resin (i.e. colophony) and 700 pounds of copal, and 115 pounds of hydrated lime, placed in a kettle melted and stirred. The lime reacts with the resin to form resin soaps. To the fluid mass is added 1000 pounds of suitable hard wax such as carnauba &c. or preferably montan wax, which may be first melted or may be added cold and then melted. A small quantity of a drying oil say 150 pounds is then added. China wood oil heated and polymerized to an incipient gel form is preferably used. The fibrous foundation may be a sheet of wool felt or mixed cotton and wool or paper. Specification 132,664, [Class 17 (ii), Boots and shoes, Construction of] is referred to.
Patent GB-1341474-A (GB)
Title: Herbicidal dinitroanilines and process of preparing them
IPC: C07D307/14
Filed: 1971-04-19
Abstract: 1341474 N-Disubstituted dinitroanilines ESSO RESEARCH & ENG CO 19 April 1971 [24 Feb 1970] 22223/71 Heading C2C The invention comprises compounds of the formula in which R 1  is a group having one of the formulae where R 4  is hydrogen, halogen or an unsubstituted or halo-substituted C 1-6  alkyl, a C 2-6  alkenyl or a nitro group; R 2  is hydrogen or an unsubstituted or halo- or hydroxy-substituted C 1-6  alkyl, a C 2-6  alkoxyalkyl, a C 2-6  alkylmercaptoalkyl, or a C 2-6  cyano-substituted alkyl group, a C 2-6  alkenyl, a C 2-6  alkynyl, a C 3-8  cycloalkyl, a C 4-10  cycloalkylalkyl or a C 2-6  acylalkyl group; R 3  is an unsubstituted or halosubstituted C 1-6  alkyl group, a CH 3 SO 2 - group or a -SO 2 NR 5 R 6  group in which R 5  and R 6  are hydrogen or C 1-4  alkyl; their production by reacting with in the presence of a tertiary amine or excess of the amine reactant; or, where R 3  is -SO 2 NR 5 R 6 , by reacting the corresponding sulphonyl chloride with R 5 R 6 NH; herbicidal compositions containing compounds as defined in association with an inert carrier; and controlling the growth of undesired vegetation at a locus by treating the locus with such a compound.
Patent GB-1286343-A (GB)
Title: Improvements in or relating to pulse delay circuits
IPC: H03K3/2893
Filed: 1970-05-08
Abstract: 1286343 Transistor delay circuits SIEMENS AG 8 May 1970 [9 May 1969] 22238/70 Heading H3T A circuit which produces an output pulse a fixed interval after an input pulse (at Ts1 base) comprises an integrator IG connected to a two stage Schmitt trigger SCH having a common emitter resistor R2, the connection being directly to the base of the first transistor Ts2 and via a diode D1 and Zener diode D2 to its emitter. The arrangement is such that integrator capacitor C is rapidly charged by the emitter voltage of Ts2, Ts3 via D2, D1 to the Zener voltage level in a time which is insignificant compared with the remaining charge time via a resistor R1, up to the threshold of the Schmitt trigger. Thus, provided C is discharged (by a transistor Ts1 controlled by input pulses) below the Zener voltage the exact amount below does not affect the delay time, and hence the input pulses can be more closely spaced. The integrator may be connected to SCH by a transmission line (Fig. 3, not shown), in which case the Zener diode and associated resistors provide a low impedance across the line which is thereby damped. The Zener diode also protects Ts2.
Patent GB-1222130-A (GB)
Title: Cathode assembly for an x-ray tube
IPC: H01J35/06
Filed: 1968-05-10
Abstract: 1,222,130. X-ray tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 10 May, 1968 [13 May, 1967], No. 22282/68. Heading HID. An X-ray tube provided with a cathode structure including a cathode cap 3 is provided with at least two coaxially arranged hollow cylinders adapted to conduct heat away from the cathode cap. In Figs. 1 the cap 3 is joined to a plate Sa secured to one end of a nickel sleeve 4 the other end of which is welded to a cylindrical member 5 of an alloy having the same thermal expansion as glass. The member 5 is joined to the glass envelope portion 13 and also to a hard glass member 12 through which lead-in wires 9-11 extend to the filaments 7 and 8. A copper cylinder 6 is soldered to the member 5; when the cathode structure is sealed into the envelope, the cylinder 6 is directly gripped in the chuck of a sealing-in machine so that the cathode can be aligned accurately, and the heat generated during sealing is conducted away to the chuck through cylinder 6 thereby reducing the heating of the cathode sleeve 2 and of the cathode cap 3 In operation the cooling provided through cylinder 6 may be improved by circulating oil through the cylinder (Fig. 2, not shown), and the same cooling oil circuit may be used to cool the anode. In an alternative construction, Fig. 3 (not shown), the cylinder 5 is joined directly to the plate 3a, and the glass envelope is sealed to the periphery of cylinder 5. The cathode projects into the interior of an earthed metal screen to prevent electrons from impinging on a glass envelope portion, and the anode may be similarly arranged. The envelope may contain SF 6  to improve the heat conduction to the outside.
Patent GB-261136-A (GB)
Title: Improvements in and relating to the recording and reproduction of sound
IPC: G11B15/26
Filed: 1925-09-09
Abstract: 261,136. Stevens, A. Sept. 9, 1925. Electric and magnetic machines. -Relates to sound recording and reproducing machines of the kind in which the sound is recorded by variably magnetizing a moving - steel wire or tape. According to the invention, the wire or tape is fed between two spaced pairs of rollers from one spool to another, -the electromagnet or magnets Leing so located as to act upon the portion of the wire or tape between the pairs of rollers, one or both of which is or are positively driven. Means for driving the spools frictionally from one pair of the rollers are provided, and during the operation of the machine, the take-up spool is thus driven, and the other spool is rotated, in opposition to the frictional drag of a disc tending to turn it in the reverse direction, by the pull of the wire or tape. It is stated that by this means the speed of travel of the wire &c. past the electromagnet is maintained practically constant. In the machine shown, spools 4, 5 are mounted between fixed and removable brackets 2, 3 supported by a base 1, which also supports between brackets 7, 8 pairs of feed rollers 9, 10. The lower roller 9 is driven from a shaft 11 by an electromotor &c., and is geared by wheels 13, 12 to the upper roller 9. The shaft of each upper roller 9, 10 is pressed down by a spring 15, these rollers consequently having some vertical play. The shaft of the lower roller 9 drives, by means of pulleys 14, 19 and belts 22, 23 (or by sprocket and chain gearing), discs 18, Fig. 2, which rotate the spindles 17 upon which the spools 4, 5 are loosely mounted. The discs 18 have a frictional driving engagement with the spools, the necessary pressure being adjustably obtained by means of screws 21 and springs 19<a> acting through ball thrusts 20. The belt 22 is crossed, so that the friction discs rotate in opposite directions to produce the effect stated above. Thus, when the record wire or tape 24 passes from the spool 4 to the spool 5, the latter is driven by its friction disc, rotated by the belt 22, and the spool 4 is pulled round by the wire &c. 24, in opposition to the drag exerted by the friction disc associated with that spool. One form of electromagnet suitable for use with a wire record is shown in Fig. 4, and comprises a pair of bobbins 25 mounted on inclined cores 26, which may be connected by a soft iron bar 31. The magnet as a whole is carried by an arm 27, pivotally mounted on an arm 28, itself pivoted at one end on a vertical axis. A roller 29 on the arm 27 is held down on the wire or tape by a spring 30. In recording sound, the electromagnet is connected in circuit with a battery and a microphone. For reproducing, an amplifier and loud speaker or earphones are used.
Patent GB-397303-A (GB)
Title: Apparatus for electrometric determination of hydrogen ion concentration
IPC: G01N27/333
Filed: 1932-08-12
Abstract: In apparatus for electrometrically determining hydrogen-ion cencentration, the hydrogen electrode consists of metals such as palladium or rhodium which acquire the properties of a hydrogen electrode under the action of hydrogen, and retain these properties when removed from the hydrogen atmosphere, or metal alloys exhibiting the above properties.  The electrodes are used in the absence of an atmosphere of hydrogen, and may be charged by being made the cathode in an electrolytic cell.  Suitable alloys are those of palladium or rhodium with mechanically stronger metals <PICT:0397303/III/1> <PICT:0397303/III/2> <PICT:0397303/III/3> <PICT:0397303/III/4> <PICT:0397303/III/5> <PICT:0397303/III/6> such as iridium or osmium. Fig. 2 shows a needle electrode of a suitable metal or alloy 10 having a core 9 of a hard elastic metal such as steel or iridium.  In Fig. 3 the core 10 of a suitable metal is surrounded by a thin sheath 11 of a harder noble metal, e.g. platinum or iridium.  The hydrogen penetrates through the sheath.  Fig. 4 shows a needle electrode 10 of suitable metal coated with insulating material 12, e.g. glass or quartz and having an outer sheath 11 of hard elastic metal.  A tubular electrode may be combined with a syringe, as shown in Fig. 5, to allow blood to be withdrawn from a blood vessel.  Such hollow electrodes may have a central platinum electrode which is used with dilute sulphuric acid to form an electrolytic cell to charge the electrode.  Fig. 6 shows a needle electrode 9 of hard elastic metal fitted with a pressed or sheath 10 of metal absorbing hydrogen, such as palladium.  Fig. 7 shows a similar construction in which the electrode has a smooth surface.  For introduction into an organism, the needle may be arranged to penetrate only to a predetermined depth.  Such electrodes may be used for measuring the hydrogen-ion concentration of the blood stream or of the sap in plants or in other physiological fluids such as blood serum, watery extracts from plants, fermenting fluids or in hides during tanning, in gels or in the ground.
Patent GB-480326-A (GB)
Title: Improvements in or relating to machines for binding together sheets of paper by crimping
IPC: B65H37/04
Filed: 1936-08-18
Abstract: 480,326. Crimping paper. LEVANE, R. Aug. 18, 1936, No. 22719. [Class 141] [Also in Group XV] In a machine for fastening together sheets of paper of the kind wherein the sheets are passed between two co-operating toothed.wheels and provided with an adjustable guide for the sheets, the guide comprises a plate l having a flange p for guiding the sheets, and an elongated aperture o therein through which projects the periphery of the lower wheel, the plate being mounted on the machine frame to form the table of the machine and so as to be displaceable thereon in its own plane. The plate l has bent portions at its sides which fit around the sides of extensions a of the frame. The plate is maintained in position on the extensions a by means of spring-urged balls m engaging recesses in the underside of the extensions. The top wheel e<1> is freely rotatable on an eccentric k secured to a shaft mounted in a bearing portion g, and the shaft can be partially rotated to adjust the top wheel relatively to the bottom wheel by means of an element h secured to the shaft and provided at its free end with an adjusting-screw j engaging the machine frame.
Patent GB-1207934-A (GB)
Title: Inertia-driven standby electric generator unit
Inventor: RACANIERE PAUL
IPC: H02J9/06
Filed: 1969-05-05
Abstract: 1,207,934. Standby supply systems. P. RACANIERE. 5 May, 1969 [17 May, 1968; 24 March, 1969], No. 22762/69. Heading H2H. A standby generating system comprises a generator running in synchronism with the normal A.C. supply, the generator being used to maintain a supply to a network when the normal A.C. supply fails during the period whilst the main standby engine driven alternator is being started and connected to the network. A two speed asynchronous motor 15 is arranged to drive two flywheels 12, 18 through gearing 16, a variable ratio coupling 14 being placed between the two flywheels and the flywheel 18 being fast on the shaft of an auxiliary alternator 11. To place the apparatus in a standby condition contacts 34 and 38 are closed thereby energizing the low speed (1500 r.p.m.) winding 23 of the motor 15 and at the same time causing maximum energization of the coupling 14 by way of a governor 21 associated with the alternator 11. The motor 15 drives the flywheels 12, 18 and the generator up to speed at which point a synchronizing element 31 functions to synchronize the alternator 11 with the normal A.C. supply 2 and to connect the alternator in parallel with this supply 2 by closing contacts 32. At this point the energization of the coupling 14 .is removed, contact 38 opened and contact 39 closed so that the motor 15 now drives the flywheel 12 up to the high speed (3,000 r.p.m.) of the motor, rotation of the alternator 11 being maintained by virtue of its connection to the A.C. supply 2. Upon failure of the supply 2, a switch 51 changes over to the emergency power supply unit 3 which includes a prime mover. Whilst this unit is being started the supply to a network 1 is maintained by the alternator 11 driven by the energy stored in the flywheels 12, 18. Initially the flywheel 18 maintains rotation of the alternator 11 until the clutch 14 is energized. Thereafter the governor 21 varies the energization of the coupling 14 so that the high speed flywheel 12 drives the alternator 11 at its normal speed, whilst the flywheel 12 is slowing down. Before the speed of flywheel 12 has dropped to the normal speed of the alternator 11 the unit 3 will normally have been started and connected to the network 1 to maintain the supply thereto. In other embodiments a prime mover or a battery driven electric motor may be arranged to drive the motor 15 so that the supply to the network 1 may be maintained by the alternator 11 should difficulty be had in starting the emergency supply unit 3. In yet a further embodiment all the power required from the network 1 is supplied by the generator 11.
Patent GB-225930-A (GB)
Title: Improvements in or relating to perforated record-cards of the kind used in machines for compiling statistics
IPC: G06K19/04
Filed: 1923-09-11
Abstract: 225,930. Greene, C. A. E. A., and British Tabulating Machine Co., Ltd. Sept. 11, 1923. Statistics, compiling.-A recordcard having the index points for the perforations b arranged in columns has the name and address &c. of a customer &c. to whom the record relates, or other relevant legend, cut therein to form a stencil a, which is used as. a printing element in an addressing or other stencil-printing machine.
Patent GB-206940-A (GB)
Title: Process for preparing a vaccine for tuberculosis
IPC: A61K39/04
Filed: 1922-08-22
Abstract: 206,940. Sata, A. Aug. 22, 1922. Vaccines; bacteria, cultivating.-A vaccine for tuberculosis is prepared by cultivating human tubercle bacilli in glycerine-agar at 38‹ for six weeks, and the skin of bacilli is dried for about a month at 40‹ C. and then further dried over calcium chloride for another month. The dried product is ground in a sealed, ball-mill for about six weeks until only a few groups of bacilli remain, the rest having been converted to a " grainy state." The unchanged bacilli are still living, but are not virulent.
Patent GB-791580-A (GB)
Title: Improvements in or relating to the cutting of sheet materials
IPC: C14B5/00
Filed: 1956-07-25
Abstract: 791,580. Cutting-pads. BRITISH UNITED SHOE MACHINERY CO., Ltd. July 25, 1956 [July 26, 1955], No. 22935/56. Class 31 (1). A cutting pad 10 comprises a dielectric worksupporting member 14 overlying and secured to an electrically conductive plate 102, the dielectric member comprising at least two layers of dielectric sheet material adhesively secured together. As shown in Fig. 4, the dielectric member consists of two layers of creped paper 24 secured to each other by means of pressuresensitive adhesive 26, e.g. polyvinyl methyl ether and secured to the plate 102 by means of similar pressure-sensitive adhesive 28. Each layer 24 is preferably approximately 0.01 inches in thickness. The dielectric member may alternatively be of sheet plastic materials. The plate 102 may be a soft metal, e.g. zinc or aluminium or a conductive composition of a natural or synthetic rubber or resin having conductive particles, e.g. carbon black, therein. The cutting pad is described as applied to a press which is otherwise identical with that described in Specification 764,634 which is referred to.
Patent GB-1165320-A (GB)
Title: A Process for the Conversion of Fats and Oils
IPC: A23K20/158
Filed: 1966-08-26
Abstract: 1,165,320. Producing fat particles. INTERFETT SPECIALFETTPRODUKTE G.m.b.H. 26 Aug., 1966 [27 Aug., 1965], No. 22972/69. Divided out of 1,164,462. Heading B5A. [Also in Division B2] Edible powder products produced by the process and apparatus of Specification 1,164,462, and comprising a mixture including fat and oil, may also be produced by pre-treating the mixture at a temperature of 10‹ to 15‹ C. above the melting point thereof in a mixer 14 to produce a pre-crystalline structure and then spraying the mixture, from a nozzle 15 containing a rotary fluted cone 16, into an enclosed space 5 wherein the relative humidity is maintained at 0-20%. Dry air may be provided in counterflow to the spray discharge within space 5.
Patent GB-185021-A (GB)
Title: Hand operated fans
IPC: F04D25/08
Filed: 1921-08-30
Abstract: 185,021. Aylesworth, A. J. Aug. 30, 1921. Driving-gear; impeller blades.-A fan, which may be held in and operated by the hand, is driven by a spiral gear 13 surrounding the shaft 1 and operated bv reciprocation of the pin 16 carried by the tubular member 18 slidable in the outer casing 21. The spiral gear 13 has small longitudinal freedom and engages recesses in the flange 14 on the shaft 1 only on the driving-stroke of the pin 16. The fan blades 8 are pivoted on a resilient ring on the collar 10 slidable along the tube 5 by spring fingers attached to the slide 18. The vanes are guided through openings in the end member 12, and fold inside the casing when not in use.
Patent GB-301767-A (GB)
Title: Improvements relating to transformer connections, for example, for rectifiers
IPC: H02M7/06
Filed: 1927-09-02
Abstract: 301,767. British Thomson-Houston Co., Ltd., and Read, J. C. Sept. 2, 1927. Vapour apparatus, arrangements of.-An interphase t r a n sformer connection for arc rectifiers having 12 or more phases and the secondary winding of the main polypbase transformer divided into a plurality of symmetrical star-connected groups, has the neutral point of each group connected each to a winding 6 - - 9 on one leg of an interphase transformer and the other side of the windings connected to form a star point 10, the D.C. ampÞre turns of each leg of the interphase transformer being neutralized by a separate winding 11 - - 14, the separate windings being connected in series to the star point. Instead of one transformer, a number of single-phase transformers may be used, and in either form additional unwound legs may be provided. If desired, a shell type of core could be used. As a further modification, the star-connected groups could have their secondary windings divided into sub-groups, the sub-groups in a group, and the groups themselves, being connected together by interphase transformers of the above types.
Patent GB-1061257-A (GB)
Title: Apparatus for focusing electromagnetic radiation
IPC: G02B5/18
Filed: 1964-06-04
Abstract: 1,061,257. Optical recording. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 4, 1964 [June 28, 1963], No. 23118/64. Heading G5R. [Also in Division H4] A horizontal line of digital information is recorded on a vertically moving thermoplastic web 6, Fig. 1, by means of a light source 1, a rotating mirror 4 and an electrically responsive focus adjusting device 9 which causes focusing to be correct at every lateral point on the web, the device 9 being electrically linked to the mirror 4. The device 9 comprises a plate of electro-optic material, Fig. 4, not shown, which exhibits the " fringent electro-optic effect " when electrical voltages are applied between pairs of electrodes attached to its surfaces such that a Fresnel zone plate is defined by the gaps between fringent effect areas as they extend from the electrodes (see Division H4). The point of focus of a plane polarized monochromatic light beam is varied as the gaps between the fringent effect areas are caused to vary in response to the electrical voltages.