baber/WOPTO huggingface dataset:
Patent GB-788335-A (GB)
Title: Improvements in a process for the production of optically active glutamic acid
IPC: C12P13/14
Filed: 1955-09-07
Abstract: L(+)-Glutamic acid is prepared by cultivating a strain of a species of Cephalosporium in a nutrient medium containing urea and a source of carbohydrate under aerobic conditions until appreciable quantities of said glutamic acid are formed in the medium.  The Cephalosporium strain is preferably one of the following species: C. salmosynnematum, C. diospyri and C. acremonium.  Specified carbohydrate sources are sucrose, glucose, corn syrup, molasses and potato, corn or wheat starch.  The urea may be supplemented by nitrates, ammonium salts, protein hydrolysates and proteins such as wheat gluten, corn gluten meal, soybean meal, distillers' solubles and cornsteep liquor.  Salts such as sodium chloride, magnesium sulphate and potassium sulphate may also be added to the nutrient medium.  The urea concentration is preferably 0.1 to 5 per cent by weight of the reaction medium and the urea may be added at the beginning of or during the fermentation.  The temperature is preferably maintained between 25 DEG  and 32 DEG  C.  Aerobic conditions may be maintained by passing through 0.5 to 2.5 volumes of air per volume of medium per minute. The glutamic acid is isolated from the fermentation medium by chromatographic adsorption or by extraction with a polar solvent. Specification 776,722 is referred to.
Patent GB-1023330-A (GB)
Title: A precision tool for cleaning the brass electrodes inside the distributor cap of a motor car engine
IPC: F02P7/02
Filed: 1964-06-22
Abstract: 1,023,330. Reservoir pads. V. J. COTTLE. Aug. 14, 1964 [June 22, 1964], No. 25659/64. Heading A4K. [Also in Division H2] A special tool for cleaning the stationary electrodes in the cap of a distributor for internal combustion engines comprises a central bearing portion shaped to fit within the distributor cap and a body portion manually rotatable on said bearing portion such that a fibre block carried thereon rubs over the surfaces of the electrodes. The fibre block has a substantially semi-circular periphery and is movable radially outwards by finger pressure on a lever pivoted on said body portion. A small sponge is provided in a recess in the fibre block communicating with the periphery by means of two holes containing a wick whereby cleaning fluid is automatically fed to the periphery due to compression of the sponge by cams on the bearing portion as the fibre block moves past each electrode.
Patent GB-248282-A (GB)
Title: Process of manufacture of aluminous cements, coloured or white
IPC: C04B7/32
Filed: 1925-10-14
Abstract: 248,282. Voisin, U. B. Oct. 14, 1925. Addition to 243,876. Cements, Portland, processes and materials for making.-Aluminous cements are made by heating the materials in a very fine state of subdivision to a temperature below the softening or clinkering point, e.g. 1000-1100‹ C. White cements can be obtained by using raw materials free from iron.
Patent GB-1344354-A (GB)
Title: Corrosion-resistant tie-rod and method for securing the same in soil
IPC: E02D5/76
Filed: 1971-04-19
Abstract: 1344354 Ground anchors; pile anchors K BAUER 19 April 1971 [12 Jan 1971] 25739/71 Headings E1B and EIH An anchoring device 1 comprising a corrosion resistant rod 2 and a plastics friction sleeve 9 with a corrugated outer surface is fixed in the ground by injecting a synthetic resin or cement adhesive between the rod 2 and the friction sleeve, inserting a drift tube and the device into a hole and prior to hardening of the adhesive, withdrawing the drift tube and simultaneously injecting hardening material into the hole. A bundle of rods may be used surrounding a tube for injecting the adhesive. The adhesive bond may be weaker near the outward end 7 of the device than at the end 3. The device may be used to secure sheet piling 5.
Patent GB-1037872-A (GB)
Title: Blocking oscillator circuit
IPC: H03K3/30
Filed: 1963-06-28
Abstract: 1,037,872. Transistor blocking oscillator circuits; circuits employing bi-stable magnetic elements. STANDARD TELEPHONES & CABLES Ltd. June 28, 1963, No. 25783/63. Headings H3B and H3T. A blocking oscillator has three or more squareloop core feedback transformers. The oscillator may be arranged so that the switching of the cores takes place together or successively. Fig. 1 shows a transistor blocking oscillator having a series of feedback transformers with successively increasing number of primary turns. In response to a triggering pulse the transistor saturates and the current rises to a value determined by the winding with the largest number of turns. In due course its core will saturate and the feedback will cease but conduction is momentarily maintained by stored charge carriers. The current rises and the next core starts to switch. Thus the cores switch in succession and a step-wise increase in transistor current occurs until the final core switches. They are then simultaneously reset by a steady current or pulse of current in the reset windings np. Output pulses occur in succession in windings no. Instead of grading the number of primary turns the secondary or bias winding turns or the bias currents may be graded (Figs. 4 and 5, not shown). Resetting may be effected successively by a second transistor connected in push-pull relationship to the first (Fig. 6, not shown). The output windings may be connected to polarity selection diodes so that output pulses are provided by the windings in succession throughout set and reset periods. Output windings may be arranged in series so that a train of pulses is produced (Fig. 7, not shown). The push-pull circuit may be free running or, by the provision of a differentiating transformer, a neutralizing pulse may be fed back to terminate operation after each " set " cycle and after each " reset " cycle or after each cycle of " set " and " reset " (as explained with reference to Figs. 3-11 (not shown) and as illustrated in Fig. 12, not shown). Resetting may alternatively be effected by transistor feedback circuits individual to each core in which case, if the output diodes conduct only during the resetting period delayed output pulses of different widths are available in different output windings (Figs. 12 and 13, not shown). Triggering may be effected by pulses applied to the emitter or base via A.C. or D.C. couplings or through a core winding (Figs. 14-18, not shown). Variation of the " set " and " reset " duration may be effected by varying directly, or through variable resistors, the base, collector or reset winding current (Figs. 5 and 14-18, not shown).
Patent GB-717699-A (GB)
Title: Improvements in or relating to concrete base units in combination with tapering tubular metal poles
Inventor: SCRIVENER WILLIAM CHARLES
IPC: E04H12/22
Filed: 1951-11-05
Abstract: 717,699. Ground anchors. MASTS, Ltd. Nov. 5, 1951, No. 25877/51. Class 45 Relates to a concrete base unit 1, Fig. 3, in combination with a tapering tubular metal pole wherein the external surface at one end of the base unit has a taper which conforms to the taper of the internal surface of the lower end of the pole or lowermost pole section 3 in the case of a pole constructed in sections and which provides sufficient strength to support the pole in an upright position when the other end of the base unit is planted in a supporting surface with the base unit upright. The base unit may be hollow or solid and has longitudinal re-inforcing rods 2; which may be spaced symmetrically around the periphery or when the pole is for carrying overhead wires, they may be arranged in two groups to give the base unit more strength transversely to the overhead wires. When a circular section is used with the latter arrangement of re-inforcing wires the position of the re-inforcing wires may be indicated as shown in Fig. 12 by providing two diametrically opposed longitudinal grooves on the external surface of the base unit. These grooves may also be used as drainage channels for any moisture which accumulates in the pole. When the base unit is hollow a door may be provided to give access to the interior so that it may be used as an instrument chamber. When a solid base unit is used, a longitudinal hole 15, Fig. 13, extending from the top of the unit to a transverse aperture 16, may be provided to take a wire rope from a winch so that the pole may be hauled in place on the unit. This hole 15 may also serve as a drainage channel and for introducing electric cables into the interior of the pole. Alternate tapers 5, 5a, Fig. 13, may be provided at the top of the unit to take different size poles. Specification 426,074, [Group X], is referred to.
Patent GB-755699-A (GB)
Title: Improvements in self-engaging and self-sealing pipe couplings especially applicable to flight refuelling purposes
Inventor: WORLIDGE RONALD FREDERICK
IPC: B64D39/06
Filed: 1954-09-07
Abstract: 755,699. Pipe joints. FLIGHT REFUELLING, Ltd. Sept. 7, 1954, No. 25923/54. Addition to 729,815. Class 99(1). To minimize fuel loss on connection and disconnection, the flight refuelling pipe coupling of the parent Specification is modified in that (1) the annular fluidtight joint seal 30 between the axially slidable coupling socket sleeve 24 and the coacting coupling nozzle 31 is a thin resilient tongue which folds back as shown on the sleeve face before transmitting nozzle movement to the sleeve to unseat the socket valve 23 via the levers 27, as against springs 19, 20 in a spider hub 18, (2) the face 33a of the nozzle valve plunger 33 is substantially flat and slightly set back from the nozzle rim 31d to prevent accidental unsealing of the plunger 33 on misaligned nozzle insertion and (3) the socket valve 23 has a substantially flat face which, in the position shown, is as close as practicable to the face 33a to reduce the volume of fuel which can be trapped therebetween. Check valves 39, 40 respectively prevent external air pressure unsealing the plunger 33 and pass hot air or gas or other de-icing fluid, the pipe 42 being appropriately vented to atmosphere or connected to a de-icing fluid supply. Specification 676,430 is referred to.
Patent GB-322740-A (GB)
Title: Improvements in radio apparatus
IPC: H01F5/04
Filed: 1928-09-10
Abstract: 322,740. British Thomson-Houston Co., Ltd., and Kinman, T. H. Sept. 10, 1928. Vacuum tubes.- The outer surface of a thermionic valveholder is used as a former or support for one or more tuning coils for use as a wireless receiving apparatus. As shown, the holder 2 is secured by a cover 5 to a ribbed former 1 on which a short wave tuning coil, not shown, is wound, rubber rings 6 being interposed between a rib 3 on the holder, the cover and a projection 4. A former 10 with slots 11 for receiving long wave and reaction coils may form an integral extension of the former 1 or be secured thereto by bolts. The holder and former may be moulded in one piece. Pairs of clips 8 carrying a tubular resistance and condenser 9 are mounted on the former, or those components may be mounted within the former. A tuning condenser may be mounted within the former. In a modification the ribbed former consists of insulating strips secured between the holder and the slotted former. Specification 285,639 is referred to.
Patent GB-356463-A (GB)
IPC: B60G13/08
Filed: 1930-08-30
Abstract: 356,463. Hydraulic shock-absorbers. GABRIEL CO., 1407, East 40th Street, Cleveland, Ohio, U.S.A. Aug. 30, 1930, No. 25989. Convention date, Jan. 22. [Class 108 (iii).] In a shock-absorber of the type in which a movable vane oscillates in a cylinder having a fixed partition, flow of liquid from one side of the vane to the other takes place through passages in the partition including a main passage controlled by a valve and a branch passage controlled by a one-way valve, such branch passage being connected to one of the pressure chambers by a passage arranged at right-angles to the direction of movement of the one-way valve. In the construction shown in Figs. 2, 3, 4, a shaft 3 operated by a connection to the axle rotates a vane E, which oscillates in a cylinder 4 having a two-part partition D<3>, D<4>. The shaft works in a bearing C<4> in a circular partition which separates the working chambers from a reservoir 4. Flow of liquid through the partition may take place through a passage 24 controlled by an adjustable valve 7b, the passage 24 leading into a circumferential groove 22. Liquid may also flow freely in one direction through the passage 20 past the one-way valve 21 and into the circumferential groove 22 which is approximately at right-angles to the direction of movement of the valve 21. Air is free to escape from either pressure chamber through a small orifice 13 in a plug communicating with the reservoir from a point between the two parts of the partition D<3>, D<4>. The working chambers are replenished from the reservoir through a oneway valve 38. When the vane E moves in an anticlockwise direction, liquid escapes through a curved groove 36 of diminishing cross section and thence through a passage 34. The vane E is formed with a circular central part which bears against the partition D<3>, D', and the vane is operated from the shaft 3 by a block 15 working in a slot so as to allow a small degree of freedom. To prevent leakage along the spindle the ends of the partition and casing are conical to engage a packing ring 41 which is forced in by a spring held by a cap having teeth 6 which engage a groove in the casing, the tongues being held in engagement by a cap G<1>. The vane and the partition are made from a material having a coefficient of expansion differing from that of the casing to compensate automatically for variations of viscosity of the liquid due to changes in temperature.
Patent GB-1082890-A (GB)
Title: Improvements in or relating to electric amplifiers
IPC: H03F3/68
Filed: 1966-06-10
Abstract: 1,082,890. Transistor amplifier circuits. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 10, 1966 [June 10, 1965], No. 26097/66. Heading H3T. A pulse amplifier comprising main and auxiliary phase-reversing amplifiers in parallel channels between a common input and a common output, the output of the main amplifier being coupled through an attenuator to the input of the auxiliary amplifier, is characterized by the provision of means to equalize the signal phase delay between the input and output over all three paths. In one arrangement, Fig. 1, the main amplifier comprises a PNP transistor 13 with the input terminal 2 connected through a resistance 14 to its base and with its collector connected through a resistance 19 and capacitor 18 to its base to provide negative feedback. The collector is connected through a passive compensating network 20 to the emitter of an NPN transistor 3 which provides the output stage. The auxiliary amplifier 28 is similar, and has its base connected to the input through a passive compensating network 24 and its collector connected to the output stage. The two passive compensating networks each comprise two series resistances and a shunt capacitor, and have signal phase delays equal to those of the amplifiers. The collector of the main amplifier 13 is connected to the base of the auxiliary amplifier 28 by an attenuating resistance 34; preferably the amplifiers have equal gains and the attenuation of resistance 34 is equal to the reciprocal of the gain. The system has a gain which is relatively stable, variation in gain of the main amplifier being compensated by a signal from the auxiliary amplifier. In a modified arrangement, Fig. 2 (not shown), the compensating networks 22 and 24 are omitted and the attenuating resistance 34 is shunted by a capacitor (35) which provides a signal phase advance substantially equal to the phase delays in the amplifiers.
Patent GB-532773-A (GB)
Title: Simultaneous production of magnesium and low carbon ferro-alloys
IPC: C22B26/22
Filed: 1939-09-19
Abstract: 532,773. Magnesium; alloys. ELECTROMETAL SOC. ANON. Sept. 19, 1939, No. 26122. Convention date, Oct. 21, 1938. [Class 82 (i)] Magnesium is obtained from its compounds by the use as a reducing agent of an ironsilicon alloy contaning a metal such as chromium, manganese, tantalum, niobium, cobalt, or nickel which does not react with the magnesium compounds at the reduction temperature, there being obtained simultaneously magnesium and a lowcarbon low-silicon iron alloy containing the chromium &c. the reaction being carried out at a temperature below the melting point of the alloy, particularly 1200-1500‹C. The mixture, loose or briquetted, and preferably with the addition of lime, may be heated in a stream of hydrogen or other inert gas or in a vacuum in an externally heated muffle or tube furnace or in an arc or other furnace having internal electric heating, the magnesium vapours being condensed and the iron alloy being separated from the residue for example by melting or by mechanical or electromagnetic means.
Patent GB-1156390-A (GB)
Title: Polyoxin Antibiotics and process for preparing the same
IPC: C12P/
Filed: 1967-06-06
Abstract: 1,156,390. Antibiotic polyoxins. RIKAGAKU KENKYUSHO. 6 June, 1967 [6 June, 1966; 19 July, 1966], No. 26142/67. Heading C2A. The antibiotics polyoxins D, E, F, G and H having phytopathogenic activity are produced by cultivating a polyoxin-producing strain of Streptomyces cacaoi var. asoensis (see Specification 1,097,189) in an aqueous nutrient medium containing assimilable sources of carbon, nitrogen and inorganic salts. Specified strains are ATCC 19093 and 19094 and polyoxin-producing mutants thereof. Polyoxin complex is isolated from the clarified broth and purified by the following steps (a) adsorption on activated carbon (at acid or neutral pH) followed by elution with a solvent, e.g. aqueous methanol, (b) adsorption on a cation or anion exchange resin followed by elution with an acid or alkali, (c) adsorption on Dowex 50W followed by elution with aqueous sodium chloride or phosphate buffer, (d) chromatography on Sephadex and elution with a phosphate buffer. (The words " Dowex," "Sephadex" and " Amberlite " are Trade Marks). The purified polyoxin is dissolved in water and treated with Amberlite 1R-4B (basic anion exchange resin). Polyoxins A, B, G and H are recovered from the solution passing the resin and polyoxins D, E and F are eluted from the resin with aqueous sodium chloride. D, E and F may be further purified by treatment with carbon, followed by elution with methanol-pyridinewater (5 : 1 : 4). Separation into individual components is obtained by chromatography on a cellulose column or silica gel, followed by elution with butanol-acetic acid-water (4: 1 :2). Polyoxins D, E, F, G and H are easily soluble in water but hardly soluble in methanol, ethanol, acetone, chloroform, benzene and ether. Polyoxin D has the Formula (I) and polyoxin F has the Formula (III) Polyoxin E and G have formulµ similar to D and polyoxin H has a similar formula to polyoxin F.
Patent GB-787243-A (GB)
Title: Improvements in or relating to type-casting and composing machines
IPC: B41B7/04
Filed: 1954-12-06
Abstract: 787,243. Single-type casting machines. LANSTON MONOTYPE MACHINE CO. Dec. 6, 1954 [Dec. 1, 1954], No. 26301/56. Divided out of 787,242. Class 100(3) A typographical composing-machine includes a mould-blade position-controlling mechanism comprising a parallelogram device having two bars pivotally connected by links, and means to control the relation of the parallelogram device to the mouldblade travel. Opposite its tapered face 604, Fig. 1, the wedge member 83 has pivoted thereto a parallel linkage 418, 436, 442, the bar 436 being pivoted to a fixed plate 30 at 438. The mould blade 86 abuts the bar 418, and is cyclically moved to open position limited by the bar 418 by the mould blade abutment slide 426. The mechanism is adjustable for different set sizes by a screw 446 rotatable in a fixed member 448. The screw 446 is adjusted through a rod 92, Fig. 3, by a knob 90, one rotation of the screw causing an adjustment of one set size. As the knob 90 is rotated, fractions 1/4, 1/2, 3/4 &c. on a dial 510 are aligned with a sight aperture in a top plate 506. At each complete revolution, a disc 514 is also rotated, and by means of a notch thereon engaging one of three long pins 532 on a disc 520, and two pins 518, one on each side of the notch, engaging one of three short pins 530, on the disc 520, the disc 520 is rotated through 120 degrees, and through gearing rotates a second dial 512 so that digits thereon are also aligned with the sight aperture.
Patent GB-186914-A (GB)
Title: Improvements in or relating to pneumatically operated speedometers
IPC: G01P3/12
Filed: 1922-09-29
Abstract: 186,914. Suffit, R. M. R. Courtois-. Sept. 30, 1921, [Convention date]. Modifying scale of readings.- In an impulse speed-indicator actuated pneumatically from a revolving shaft, a piston p, Figs. 1 and 2, receives the impulses, and through a ccnnecting-rod b, rotates a member f having teeth over part of its periphery engaging with a pinion on a shaft e. Another wheel on the shaft e gears with a wheel on a sleeve rotatably mounted on a stationary spindle M, the sleeve being surrounded by a coiled spring. The spring and sleeve may be conical so that they gradually grip one another under increasing speed, w h e r e b y an equally divided scale may be obtained. The sleeve takes up a position dependent on the frequency of the impulses, i.e. the speed of the revolving shaft. A pointer Z rigid with a mass n is mounted on the end of the spindle M and is resiliently cnnnected to the sleeve through a spring s, thiarrangement constituting a damping device.
Patent GB-646809-A (GB)
Title: Improvements in or relating to the treatment of keratinous material
IPC: D06P5/13
Filed: 1947-09-30
Abstract: The resistance of wool, hair, fur and other keratinous material to the action of reducing, oxidizing and alkaline agents is improved by treating it in a single step with a reducing agent for the keratin in the presence of free formaldehyde or an alkylene dihalide.  When using the alkylene dihalide the process may be applied to the stripping of colours from wool.  The term alkylene dihalide embraces compounds in which the alkylene group is interrupted and examples of suitable alkylene dihalides are methylene dibromide, methylene di-iodide, methylene bromoiodide, ethylene chlorobromide, trimethylene dibromide, 1,4-dibromo butane, 1,4-dichloro-2-butene, 2,21-dichlorodiethyl ether, 4,41-chloromethyl diphenyl and 2,21-dibromodiethyl ether.  The amount of formaldehyde or alkylene dihalide used may be as little as 0.00045 mols. per gram of wool, and the temperature employed is preferably from 60 DEG  to 100 DEG  C. Examples are given using (1) sodium formaldehyde sulphoxylate and formalin at pH7; (2) sodium formaldehyde sulphoxylate, formalin and ammonia; (3) sodium formaldehyde sulphoxylate and formalin at pH5.0; (4) sodium hydrosulphite and formalin at pH8.1; (5) formamidine sulphinic acid and formalin at pH8.2; (6) sodium formaldehyde sulphoxylate and 1,2-dichloroethane in borate solution at pH8.6; (7) sodium hydrosulphite, 1,2-dibromoethane, borax and a dispersing agent; (8) sodium hydrosulphite, 1,2-dibromoethane and borate buffer at pH8.6; (9) sodium hydrosulphite, 1,2-dibromoethane and dispersing agent at pH8.3; (10) sodium hydrosulphite and 1,2-dibromoethane at pH8.3; (11) formamidine sulphinic acid and 1,2 - dibromoethane at pH8.2, and (12) sodium formaldehyde sulphoxylate, 1,2-di-bromoethane, borate solution and a dispersing agent.