baber/WOPTO huggingface dataset:
Patent GB-1441457-A (GB)
Title: Reactors
IPC: B01J19/24
Filed: 1973-06-22
Abstract: 1441457 Halogenated hydrocarbon HOECHST AG 22 June 1973 [24 June 1972] 29738/73 Heading C2C [Also in Division B1] Halogenated hydrocarbon is prepared by a method which comprises contacting, for example at a temperature of from 400 to 800 C. and a pressure of from 50 to 700 kp/cm<SP>2</SP>, hydrocarbon/ partially halogenated hydrocarbon/completely halogenated hydrocarbon with halogen in a reactor which comprises a plurality of seriesconnected reactor units each comprising a body portion having a nickel lining flanged at its end (or ends) connected to another reactor unit (or other reactor units) and, between each adjacent pair of reactor units, a sealing element comprising a nickel core which is in sealing contact with the adjacent flange of the lining of each reactor unit adjacent thereto. General reference is made in the specification to the "chlorolysis" reaction, i.e. the splitting of C-C bonds by the action of chlorine at elevated temperature and pressure, and to the fact that the product of this reaction may comprise material selected from hydrogen chloride, carbon tetrachloride and tetrachloroethylene; specific reference is made to the formation of carbon tetrachloride from benzene and chlorine. As exemplified, reaction product comprising non-reacted chlorine, hydrogen chloride, carbon tetrachloride, hexachloroethene and hexachlorobenzene is obtained from a combination of 1,2-dichloroethane and residue resulting from chlorination of methane to form carbon tetrachloride and containing carbon tetrachloride, pentachloroethane, hexachloroethane, trichloroethylene and tetrachloroethylene (Example 1) and from residue resulting from vinyl chloride manufacture and containing 1,2-dichloroethane, 1,1,2-trichloroethane, dichlorobutene and monochlorobenzene (Example 2) by reaction with chlorine in such reactor.
Patent GB-955450-A (GB)
Title: A process for the preparation of polymers of alkenes, and the articles made thereof
IPC: C08F10/00
Filed: 1962-08-02
Abstract: Polymers of monomethylenemonocycloalkanes having at least 6 carbon atoms in the rings are prepared by polymerization at below 0 DEG C. (e.g. below -80 DEG C.) under the influence of Friedel-Crafts catalysts.  Monomethylene cyclohexane -heptane or -octane and monomethylmonomethylenecyclohexane are specified, and these may be polymerized alone, in admixture or mixed with monomers such as butadiene, isoprene, isobutene, a -methyl styrene, styrene and vinyl chloride. Polymerization is preferably in a solvent which is purified before use (e.g. with P2O5), and may be with the aid of a co-catalyst such as ethanol.  In examples the polymerization is in ethyl or methyl chloride or hexane, the monomer may be dried with sodium, and the catalysts used are AlCl3, BF3 and TiCl4.  Catalysts are neutralized and polymers are recovered with the aid of materials selected from CCl4, aq.NaOH, H2O, Na2SO4 and MeOH. Amorphous polymer may be converted to a crystalline form by heating or by the use of benzene.  The products may be formed into thread, film or other shaped articles, and find use in electrical applications.
Patent GB-1118525-A (GB)
Title: Improvements relating to the transmission of radio frequency coded pulses
Inventor: SILLS EDWARD CHARLES
IPC: G08B25/10
Filed: 1966-07-04
Abstract: 1,118,525. Radio signalling. SECURITON Ltd. July 4, 1966, No. 29982/66. Heading H4L. In an alarm system, a transmitter generates a R.F. signal modulated by a subcarrier which is in turn pulse coded and the receiver includes a tuned R.F. stage selecting the transmitted signal, a detector, a filter recovering the pulse coded subcarrier signal and means for decoding the received pulses to operate an alarm. Transmitter, Fig. 4. A multivibrator VT3, VT4 is controlled by a bi-stable device VT1, VT2, via transistors VT10, VT11 so that the pulse periods (i.e. each half-cycle) over two cycles of the multivibrator are of short duration (representing 0) or long duration (representing 1) the coded sequence being determined by the connection of points 1, 2 to two of the points A, B, C or D. Transistor VT3 of the multivibrator controls a further multivibrator VT5, VT6 via transistor VT5A, this multivibrator operating at the subcarrier frequency of 2À1 kc/s. A diode D3 provides compensation for temperature and supply voltage changes. The output of multivibrator VT5, VT6 is supplied via emitter-follower VT7 to a modulating transistor VT8 which controls R.F. oscillator VT12 so that pulses of energy are supplied to a radiating loop in accordance with the code. The transmitter is small enough to fit into a pocket and may be disguised as a wrist-watch. Receiver, Fig. 5. After detection in a conventional superheterodyne receiver the 2À1 kc/s subcarrier is supplied via transistor Q1 and filter L, C2 to a normally cut-off peak detector Q3 so that the signal supplied to trigger pair Q3, Q4 follows the code. By this means, if the input signal exceeds a predetermined amplitude the reconstituted code and its inverse are supplied via transistors Q4 and Q5 respectively to logic circuits detecting the four digits of the code, it being necessary to detect several sequential correct codes before the alarm is operated. Bi-stables B1, B2 are arranged to detect alternate half-cycles and monostable delay devices D1, D2 distinguish between long and short pulses. A third bi-stable B3 is controlled by B2 and registers the state of B2 during the period preceding its last change of state during a cycle. The coding sequence to which the receiver responds is determined by which of the outputs of B1, B2, B3 are connected with the output of Q4 or Q5 to a gate Q17. Gate Q17 triggers a monostable delay device D3 and after about ten cycles of operation of D3 a capacitor C9 is charged sufficiently to trigger the circuit Q8, Q9 and operate the alarm relay via transistor Q10.
Patent GB-687265-A (GB)
Title: Resinous products containing chloro-isopropenyltoluenes
IPC: C08F212/14
Filed: 1948-11-18
Abstract: Copolymers of 4-chloro-3-methyl- and/or 3-chloro-4-methyl-alpha methylstyrene and at least one other monomer of the formula <FORM:0687265/IV (a)/1> where X is alkyl, aralkyl, aryl, substituted aryl or hydrogen, Z is phenyl, substituted phenyl, thienyl, pyridyl, -CN, -C(O)R, or -COOR, where R is alkyl, phenyl or substituted phenyl, and Y is hydrogen or methyl, and X and Y are hydrogen when Z is a cyclic group are made by polymerizing a mixture of the monomers in aqueous dispersion, with agitation, in the presence of a polymerization catalyst and optionally a modifier, e.g. dodecyl mercaptan.  The substituted styrenes are preferably present in at least 10 mol. per cent of the mixture.  The other monomer may be acrylonitrile, methacrylonitrile, acrylic and methacrylic acid esters, e.g. allyl and phenyl, vinyl methyl ketone, styrene, mono- and dichlorstyrenes, p-methyl styrene, alkoxystyrene, fumaryl dinitrile, or methyl-isopropenyl ketone.  The polymerization may be effected in the presence of emulsifying agents such as sodium stearate or oleate, lauryl alcohol sulphate, and the sodium or potassium salts of dehydrogenated resin acids. The catalyst may be potassium persulphate, potassium perborate, benzoyl peroxide, cumene peroxide and mixtures of these catalysts with the alkali metal sulphinates of long chain fatty acids.  The aqueous dispersions are used for treating paper and fabrics. Specifications 687,266 and 687,267, [both in Group IV (b)], are referred to.
Patent GB-483837-A (GB)
Title: Improvements in devices for supporting and retaining in position globes, reflectors and the like for electric lighting
IPC: F21V17/12
Filed: 1936-11-04
Abstract: 483,837. Securing globes &c. to galleries. DENNES, N., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 4,1936, No. 30060 [Class 75 (ii)] The circular ring 2 of a gallery 1 is formed with a number of circumferential slots 7, 8 and is encircled by a separable retaining ring 9 having a permanent set so as to tend to expand and divided at one part 16 of its circumference with its two ends connected by adjustable or detachable means such as a screw 17, toggle, or link, whereby said ends may be brought together to contract the ring and cause portions thereof to pass into the slots 7, 8 and engage an external grooved projecting portion 4 of a globe, shade, or reflector 3. The ring 9 may comprise three arcuate portions 10, 11, 12 joined by inwardly curved or straight portions 13, 14, 15, and it may be provided with external operating projections, and with internal projections 19 of asbestos or metal for engaging a globe of smaller diameter. Alternatively, the ring may comprise two parts connected together by a hinge which tends to maintain them partly open. According to the Provisional Specification more than two of such hinged parts may be employed.
Patent GB-365057-A (GB)
Title: Device for automatically adjusting the size of the loop in kinematographic apparatus
IPC: G03B1/56
Filed: 1930-10-08
Abstract: 365,057. Kinematograph apparatus. OEHMICHEN, E., Rue de Graviers, Valentigney, Doubs, France. Oct. 8, 1930, No. 30110. Convention date, Jan. 27. [Class 97 (i).] In kinematograph apparatus having intermittent feed mechanism, the feed and take-up rollers are in the form of friction drums adapted to engage the edges only of the film, and the size of the loops is automatically regulated by utilizing the natural spring of the film strip to vary the pressure on the friction roller or the arc of contact therewith or both. In one form as applied to the feed side of the apparatus 5, Fig. 3, the friction drum 2 is driven at a speed in excess of the average speed of the film, and coacts with a roller 4 to enclose the loop 3. As the loop shortens or lengthens the variation in the pressure on the driving drum or the arc of contact serves to readjust the loop to normal proportions. In the case of the take-up roller, the speed of the roller is less than or in the reverse direction to the speed of the film. Another form of construction comprises a lever 21, pivoted at 22 and biased by a spring, gravity, &c. The film is looped between a roller 14 and a roller 16 on the end of the lever and passes between another roller 17 and the friction drum 18. The movement of the lever may be used to actuate electric, hydraulic, &c. relays for varying the pressure of the film on the drum. Safety rollers 25 carried by resilient arms 26 may be mounted in the loops. The driving drum construction may be of the kind described in Specifications 296,728 and 305,776, [both in Class 97 (i), Optical systems &c.].
Patent GB-704708-A (GB)
Title: Improvements in electric dry batteries
Inventor: RICHARDSON RICHARD PERCY
IPC: H01M6/48
Filed: 1951-12-24
Abstract: 704,708. Wrapping machines. BURNDEPT, Ltd. Dec. 24; 1952 [Dec, 24, 1951], No. 30134/51. Class 94 (1) [Also in Group XXXVI] A machine for folding and securing tapes e about a pile of electric cells g comprises a spring-supported anvil a movable in a die b over which the tapes are drawn from reels f, being cut to the required lengths by a blade h. The cells are stood on the tapes and are pressed downwards by a plunger c which engages a steel plate n resting on the top of the cells. The plate is formed with upstanding tongues p as shown in plan in Fig. 3. As the cells are pressed downwards the tapes e are simultaneously folded about the cells, the upper ends of the tapes being finally folded over the top of the cells by wipers m which move in succession when the plunger c is flush with the top surface of the die b. A second plunger d then engages the tongues p and presses them down over the overlapping ends of the tapes as shown in the lower part of Fig. 3.
Patent GB-984351-A (GB)
Title: Improvements in or relating to agricultural soil-working implements
Inventor: ROBERTSON IAN MACPHERSON
IPC: A01B13/16
Filed: 1960-09-02
Abstract: 984,351. Agrictultural implements. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 10, 1961 [Sept. 2, 1960], No. 30272/60. Heading A1B. An implement particularly for ridging soil comprises pairs of helical screwblades 3b carried on shafts 2 rotatably mounted in casings 4, the blades of each pair being oppositely handed so that the soil is thrust laterally to both sides of the casing. The shafts 2 are coupled to a main shaft 5 driven by chain and sprocket wheel drive 8a, 8b from a bevel gear box 9a and reversing gear box 9b, the gear box 9a being connected to the power take-off shaft of a tractor. The framework 1 is carried by depth-adjustable wheels 11 which may also be carried by mountings 14 at the rear of the frame. Variation in the width of the furrows is obtained by lateral adjustment of the angle irons 8 supporting the casings 4. A share 13a and steerage fin 13b are attached to each casing. The implement may be in the form of a wheeled trailer towed by a tractor and may have its own power units for driving the blades. The drive to the shaft 5 may be reversed and the blades of each pair interchanged so that the implement may be used as a cultivator.
Patent GB-937607-A (GB)
Title: Improvements relating to reducing the pour point of petroleum distillates
IPC: C10G25/00
Filed: 1960-09-02
Abstract: Petroleum distillates boiling above 150 DEG C., e.g. straight run distillates, and containing aromatic hydrocarbons are first heated to remove the aromatic hydrocarbons and are then contacted with activated charcoal under conditions such that at least the highest molecular weight saturated straight chain hydrocarbons are preferentially adsorbed, without adsorption of saturated straight chain hydrocarbons of lowest molecular weight or branched chain saturated hydrocarbons thus recovering a product having a pour point at least 5 DEG F. below that of the initial material.  The selective adsorption may be effected at 10 DEG -25 DEG C. or, if desired, up to 100 DEG C.  The charcoal may be in a fixed, moving, or fluidized bed. The dearomatization may be effected to leave not more than 10% weight aromatics, for example by extraction with selective solvents, washing with concentrated H2SO4 or oleum, adsorption for example on silicagel, a 13   molecular sieve, or an activated charcoal.  At least a part of the aromatics may be blended back with the product of reduced pour point. Alternatively the aromatic compound present may be catalytically hydrogenated using conventional hydrogenating catalysts, e.g. metals or compounds selected from Groups VIa and VIII of the Periodic Table, such as Mo, W, Cr, Ni, Co, or a platinum group metal supported on a refractory oxide.
Patent GB-885874-A (GB)
Title: Apparatus for blowing powdered lime and oxygen into a thomas converter
IPC: C21C5/46
Filed: 1960-09-02
Abstract: 885,874. Refining steel. HUTTEN-UND BERGWERKE RHEINHAUSEN A.G. Sept. 2, 1960 [Sept. 5, 1959], No. 30354/60. Class 72. Apparatus for blowing powdered lime and oxygen into a converter comprises a stand pipe, mounted above the converter, in which a nozzle is displaceable, and a powdered lime container and a device for mixing lime and oxygen are situated at the upper end of the stand pipe. As shown, a nozzle 4 having cooling water pipes 10, 11 is displaceably mounted in a stand pipe 3 having at its upper end a container 6 for powdered lime, an adjustable dispenser 13 and a mixer 7 supplied with oxygen from a pipe 8, the mixture of oxygen and powdered lime being fed to the nozzle by a pipe 9. The apparatus is supported above a converter 2 and the stand pipe may be of a thermally insulating material.
Patent GB-1433019-A (GB)
Title: Galvanizing plant
IPC: C23C2/34
Filed: 1973-06-26
Abstract: 1433019 Galvanizing plant TURNER LISLE Ltd 25 June 1974 [26 June 1973] 30354/73 Heading C7F In a glavanizing line which may include pickling baths 18, 20, 21, 22 a pre-heating region, using oil heaters or waste heat from the galvanizing bath, a bath 23, and quench tank 25, either articles or baskets 28 are carried along the line by a conveyer 10. Separate articles are removed by a conveyer 14, while baskets are sensed automatically or manually and transported through the bath on a trolley 29 at right angles to the line. The trolley may have a skimming device to clean the bath surface. The baskets are centrifuged and the articles removed on to a tipping table. The surface of the bath may be sprayed with zinc ammonium chloride. In modifications Figs. 3 and 4 (not shown) articles may be moved between conveyer sections by motorized trolleys or the conveyers may be arranged in the same horizontal plane.
Patent GB-1305324-A (GB)
IPC: H01L29/00
Filed: 1971-06-29
Abstract: 1305324 Semi-conductor devices SIEMENS AG 29 June 1971 [23 July 1970] 30362/71 Heading H1K The emitter-collector capacitance of a transistor, e.g. a Ge h.f. transistor, provided with elliptical or nearly elliptical large area emitter and base contact pads 10, 11 overlying an insulating layer 7 is reduced by ensuring that at most only a minor part of the emitter contact pad 10 is situated above the collector region. The elliptical contact pads 10, 11 shown may be of Ag or of Al optionally mixed with small amounts of Ag or Ni, and may overlie layers of Cr or Ti. In a modification (Fig. 3, not shown) the base electrode (4) to which the base contact pad (11) is connected is U-shaped, partly surrounding the emitter region (3). The emitter contact pad (10) is generally elliptical but with a straight edge where it overlies the collector region, and is situated above one arm of the base electrode (4). The base contact pad (11), which is similarly shaped, is connected to the other arm of the base electrode (4).
Patent GB-484680-A (GB)
Title: Linen garments, more particularly collars, and process for the manufacture thereof
IPC: D06M17/04
Filed: 1936-11-07
Abstract: 484,680. Compound fabrics. ELOD, E. Nov. 7, 1936, Nos. 30394 and 30395. Convention dates, July 13 and July 31. [Class 140] In making linen garments, e.g. collars, the fabric layers are cemented together and stiffened by media consisting substantially by weight of mixtures of thermpolastic polymers, or mixtures of mixed polymers, of vinyl esters, e.g. vinyl acetate and/or chloride, which swell up in water but are practically insoluble therein, the mixtures being composed of polymers (A) which soften between 75 and 110‹ C. without melting and polymers (B) which melt between 75 and 110‹ C. Examples of (A) are " Vinnapas " (Registered Trade Mark) U10 and U20 and " Mowilith " (Registered Trade Mark) H and 115. Examples of (B) are " Vinnapas " B17 and B60 and " Mowilith " N and NN. The media may also contain plasticizers, resins, nitrocellulose and polystyrols; they may be used to impregnate or coat fabric which is then placed between layers of fabric to be united and united by heat and pressure. On washing, the layers come apart, but may be re-united by hot ironing.
Patent GB-964276-A (GB)
Title: Improvements in or relating to folding chairs
IPC: A47C4/24
Filed: 1961-08-23
Abstract: 964,276. Seats. A. MELCHERS, [trading as RASTI, STAHLROHR-MOBELFABRIK C. M. PEISELER]. Aug. 23, 1961 [Oct. 1, 1960], No. 30440/61. Heading A4J. A folding chair is made from, preferably plastic covered, steel or alloy tubes. The leg portion 16 may be adjustably attached to the rear underside of the seat 17, e.g. by an adjustable strap or stepped locking device to engage the leg portion 16. The height of the chair is therefore adjustable. Alternatively, the seat may be a piece of material secured to the legs and held under tension when the chair is erected. The back 22 and arm rest 21 portion of the frame may be detachable from the legs.
Patent GB-695223-A (GB)
Title: Improvements in or relating to electric gating devices
Inventor: GARNER BRIAN LEONARD
IPC: H03K17/54
Filed: 1949-12-05
Abstract: 695,223. Pulse code signalling; valve gating circuits. GENERAL ELECTRIC CO., Ltd. Dec. 14, 1950 [Dec. 5, 1949], No. 30565/50. Divided out of 695,198. Classes 40 (v) and 40 (vi). In an electrical gating device comprising first and second thermionic valves having a common cathode circuit across which is developed the gated signal voltage, a third thermionic valve is connected in the said common cathode circuit and has resistance connected in its cathode circuit, the signal to be gated is supplied to a control grid of the first valve, a gating signal is supplied to a control grid of the second valve, and a signal is supplied to a control grid of the third valve to cause that valve to be relatively highly conducting when the first valve is conducting. The arrangement shown forms part of the pulse code modulation system described in the parent application, the signal to be transmitted being periodically sampled and the condenser 1 charged to the level of each sample in turn. The voltage stored by the condenser 1 is fed to the coding apparatus 2, a train of pulses 4 being supplied to the terminal 3, and the apparatus 2 subtracts the peak amplitude of each pulse 4 from the level stored by the condenser 1 to charge a condenser 5 to the resultant voltage. If this resultant voltage has a value above a pre-determined datum it is required to reduce the level stored by the condenser 1 to that of the condenser 5 before the next subtraction is made, and for this purpose there is provided a gating device comprising valves 7 and 8 whose cathodes are connected to the anode of a pentode valve 12. The voltage stored by the condenser 5 is applied to the grid of valve 7 and a square waveform signal is applied through a diode 15 to the grid of valve 8, a signal of the same waveform but opposite phase being applied to the grid of the pentode valve 12. During positive-going portions of the signal supplied to the diode 15 the valve 8 is conducting and the valve 7 cut off, and the cathode 10 is raised to such a potential that the diode 24 cannot conduct, but during negativegoing portions the condition of valves 7 and 8 is reversed, and the diode 24 conducts to reduce the voltage stored by condenser 1 to that stored by condenser 5. By arranging for the valve 12 to be highly conducting during alternate halfcycles the time during which condenser 1 is discharged to its new value is reduced. The apparatus 2 supplies a positive-going impulse to the diode 16 to block the gating device when the voltage resulting from the subtraction of a pulse 4 from the level stored by condenser 1 falls below the datum voltage.
Patent GB-245921-A (GB)
Title: Improvements in or relating to folding mangles, wringers and other machines convertible into tables by folding
IPC: D06F45/00
Filed: 1924-12-20
Abstract: 245,921. Whittaker Bros. (Accrington), Ltd., and Duckworth, J. A. Dec. 20, 1924. Catches, gravity..-A mangle wringer or other machine convertible into a table by folding has a gravity catch, or catches, C mounted, with provision. for a sliding adjustment and associated securing-means, on a lever c pivoted on the moving framework b carrying the table B, and adapted to engage an abutment a when the table B is horizontal, and to be secured to the lever c by a nut c'. The lever c is provided with an arm c<2> for manually disengaging the catch C from the abutment a and with an abutment c<3> which engages a stop b<3> also on the moving framework whereby under the weight of the operating arm the catch is positioned so as to engage the abutment a automatically when the table B is turned horizontal. In a modification the catch may be made in one piece and mounted on an adjustable pivot. Specification 226,967, [Class 138 (ii), Washing, mangline. &c.]. is referred to.
Patent GB-302783-A (GB)
Title: Improvements relating to lubricating oil dispensing apparatus
IPC: B67D7/76
Filed: 1927-11-15
Abstract: 302,783. Liquid Measurements, Ltd., and Hammond, F. Nov. 15, 1927. Dispensing liquids. - Means for dispensing lubricating oil comprises a sump 8 on which is mounted a glass vessel 13. The sump 8 is fed from a supply pipe 2 to which a horizontal tube 4 is bolted, and the oil passes up the vessel 13 to holes 11 at the upper end of a metal tube 9, centrally mounted in the vessel 13 and screwed in an extension 31 of the sump 8. The oil then passes down the tube 9 to a spring-controlled ball valve 29 in a nozzle 26, The oil feed is controlled by a plate valve 20 operated from a rod 16 and knob 25 against the action of a spring 23. A removable plug 32 is fitted in the sump 8 for cleaning purposes.