baber/WOPTO huggingface dataset:
Patent GB-544907-A (GB)
Title: Improvements relating to the production of magnesium basic carbonate, or magnesia
IPC: C01F5/24
Filed: 1941-02-24
Abstract: 544,907. Magnesium carbonates and oxide. OCEAN SALTS (PRODUCTS), Ltd., PRYTHERCH, W. E., ANDERSON, J. H., and ADAMS, B. A. Feb. 24, 1941, No. 2485. [Class 1 (iii)] Basic magnesium carbonate, from which magnesia is obtained by calcination, is prepared from dolomite or dolomite limestone with the aid of seawater or other solution containing magnesium salts. An aqueous suspension of calcined dolomite is carbonated to yield a solution of magnesium bicarbonate which is filtered to separate calcium carbonate &c. A further portion of the suspension is treated with seawater to yield a precipitate of magnesium hydroxide which is added to the bicarbonate solution to form a basic magnesium carbonate. The dolomite is preferably calcined at a temperature which decomposes only the magnesium carbonate. Specification 543,665, is referred to.
Patent GB-1516242-A (GB)
Title: Process for extracting metal values from manganiferous ocean floor module ore
IPC: C22B15/00
Filed: 1977-03-08
Abstract: 1516242 Recovering metal values METALLURGIE HOBOKEN-OVERPELT 8 March 1977 02555/78 Divided out of 1516241 Heading C1A Metal values are extracted from ocean floor nodules containing Mn and at least one of Ni, Co, Mo, V, Fe, Al, Cu and Zn by (a) treating the ore with HCl to produce Cl 2 , metal chloride solution and solid residue; (b) separating the solid from the solution; (c) separating substantially all the above metal values from the solution except Mn; (d) treating the Mn-containing solution with Cl 2  while maintaining pH above 0À5 by addition of MgO or Mg(OH) 2 , at least the major part of the Mn being pptd. at pH between 3 and 7 as MnO (1+x)  where x is between 0À5 and 0À7; (e) separating the MnO (1+x)  from the resulting MgCl 2  solution; (f) pyrohydrolysing this MgCl 2  solution in atomized state to regenerate MgO and HCl and (g) recycling the HCl to step (a) and the MgO to step (d). Procedures are described for effecting separation step (c) and for further processing of the separated metal values to obtain Al and Fe oxides, Cu, Co, Ni sulphides, Cu and Zn sulphates and Zn, Ni, Co, Mo and V chlorides.
Patent GB-734042-A (GB)
Title: Improvements in and relating to methods and apparatus for winding textile bobbins
IPC: B65H54/18
Filed: 1953-01-29
Abstract: 734,042. Winding bobbins. GUTERMANN, R. C. Jan. 29, 1953 [Feb. 18, 1952], No. 2590/53. Classes 120(2) and 120(3). A method of securing the starting thread end to the final end in the automatic production of wound bobbins, is characterised in that an empty bobbin tube is fitted with about half its length over a winding spindle, then, by means of a cutting member, a tongue is cut from the middle portion of the tube and is pressed outwards, the starting thread end is then guided under said tongue and the tongue then pressed down to clamp the thread, the bobbin is then wound in known manner, a tongue is then cut from one end of the tube by the same cutting member and bent outwards, the thread end is guided under the second tongue which is bent down on to the thread to clamp the same, and, finally, the thread end is severed. As shown, the cardboard tube 9, held on an expansible mandril 1d, 7 is furnished at about its mid-length with a projecting flap 2 cut from its periphery by a cutter 19 mounted within the tube 9 and raised by a control shaft 23, the cutter 19 cooperating with members 20 to form a U-shaped cut, the flap 2 being bent upwardly from the tube. A similar further cut 2a is furnished near the outer end of the tube 9 after the bobbin has been wound. The end of the thread being wound and extending between the traverse guide 13 and nippers 17, is now moved under the flap 2 by a transverse and axial movement of the nippers 17 and a pressing member 16 presses the flap 2 down to hold the thread end, the free portion of which is, at the same time released by the nippers 17. The winding of the package of yarn is then begun, the traverse guide 13 being returned to the inner end of the mandril for that purpose. After completion of the package, a thread clip 14 now loosely grips the final end of the thread and moves it across the tube 9 and longitudinally thereof, positioning it beneath the flap 2a which is then pressed down to hold the final thread end by a presser 15. At the same time the thread is severed by the blades of a cutter 18 and gripped again by the nippers 17 in preparation for being placed under the flap 2 of a fresh bobbin tube prior to a new wind. The nippers 17, Fig. 10, comprise fixed and movable spring-biassed jaws 50, 53, the latter being rocked about a pin 51 by a control shaft 49 and when the jaw 53 is opened an abutment 65 bears upon the spring-urged pressing member 16 for the pressing of the flap 2. The clip 14, Fig. 5, comprises fixed and movable jaws 27, 26 movable together about a shaft 29, the movable jaw 26, spring-biassed at 39, being controlled by a shaft 38 and a slide 32. The shears 18, Fig. 9, comprise fixed and movable spring-biassed cutters 44, 46 operated from the control shaft 49, the closing of the cutters effecting the lowering of the presser 15 through a lever 57 and pin 59.
Patent GB-828429-A (GB)
Title: Improvements relating to work-holding devices
IPC: B23Q3/10
Filed: 1959-01-24
Abstract: 828,429. Work-holders. HILL, J. W. Jan. 24, 1959, No. 2689/59. Addition to 817,104. Class 83 (3). [Also in Group XXIII] The V-block 10 of the parent Specification is modified by the provision of means 17, e.g. a screw, for adjusting the position of the work, so that taperedwork 24 may be adjusted until its top profile is horizontal. The slide 20 for the clamping- screw 19 may be as in the parent Specification, or may have a single guide rail 21. Specification 759,074 also is referred to.
Patent GB-763823-A (GB)
Title: Method for treating a fibrous material
Inventor: ARMSTRONG BRUCE
IPC: B01F5/00
Filed: 1955-01-31
Abstract: <PICT:0763823/IV(b)/1> <PICT:0763823/IV(b)/2> Material such as wood pulp, bagasse, ramie, linen, or cotton, in fibre bundles, is fed through a port 17, Fig. 1, on to a rapidly rotating circular head 57 mounting an annular plate 66 having a series of triangular teeth 72, Fig. 2, co-operating with similar teeth on a plate 68 fixed to an upper casing 11.  The spindle 28, which is driven by a pulley 78, is mounted in a sleeve 29, which may be moved axially by means of a hand operated worm 55 turning a wheel 49 which rotates an axially fixed nut 46 having threads engaging outer threads on a non-rotatable axially movable sleeve 35.  The sleeve 35 acts on the sleeve 29 through a spring 39, so that movement up or down of the sleeve 29 varies the gaps between the co-operating teeth on the plates 66, 68 and allows these plates to separate sufficiently to pass any foreign object entering the machine.  In operation, the fibre is directed by fins 64 to the teeth, and air is drawn in through the port 17. The teeth flex and separate the fibres as the fibres move to the rims of the plates, and at a specified radial distance from the point of entry of the fibre, where the separation is complete, a gas or liquid treating agent, e.g. bleaching liquid, which may be atomized before entering or in the machine, is introduced through one or more pipes 73.  Substances which are sensitive to oxygen can be treated in the zone in an atmosphere of nitrogen or carbon dioxide, and steam or heated gas can be introduced to control the treating temperature. After shredding and treatment the fibres are impelled by blades 65 to an exit port 18.  In one example, ground wood pulp containing 40 per cent of fibre on a dry basis is fed continuously into the apparatus and bleached with an aqueous solution containing hydrogen peroxide and sodium silicate at 75 DEG F. The treated pulp has a fibre content of 34.4 per cent on a dry basis and a pH value of between 9.5 and 10. In another example, ground wood pulp containing 38 per cent of fibre on a dry basis is fed into the apparatus with an aqueous bleaching solution containing magnesium sulphate, sodium silicate, hydrogen peroxide and sodium peroxide, the temperature of both pulp and bleach being about 140 DEG F.  The pulp discharged has a pH of 9.5-10 and an increased brightness.  In a further example, a sulphite pulp having a consistency of 40 per cent is treated with an aqueous solution of sodium chlorite, and the treated pulp is then stored for three hours at 104 DEG F.  The pulp may be treated with both sodium chlorite and sodium hypochlorite solutions, the former being introduced nearer the point of entry of the pulp than the latter.  Specification 722,820 [Group II] is referred to.ALSO:The apparatus of this Specification is identical with that described in Specification 722,820 but the claims differ and additional processes are described (see Groups IV(c) and VI).
Patent GB-608882-A (GB)
Title: Improvements in and relating to frequency dividers
IPC: H03K25/00
Filed: 1946-01-29
Abstract: 608,882. Valve circuits for frequency dividing. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 29, 1946, No. 2879. Convention date, Oct. 9, 1942. [Class 40 (vi)] A frequency divider for producing a subharmonic wave from a fundamental sine wave or a wave of positive pulses comprises a circuit tuned to the sub-harmonic frequency and excited by the fundamental wave through a first valve during alternate half-cycles of the sub-harmonic wave, excitation during the other half-cycles being prevented by a second valve connected to the tuned circuit. Fig. 1 shows a double triode valve in which the voltage produced across the common cathode resistor due to the steady anode current in the second triode biasses the first triode beyond cut-off. In the steady state, circuit 9 which is tuned to the sub-harmonic frequency is oscillating and the resulting voltage is applied to the grid 23 of the second triode. The sub-harmonic current thus caused to flow through the common cathode resistor produces a voltage which reduces the bias on the grid of the first triode towards its cut-off value every alternate halfcycle. Thus, the fundamental signal, which may be of pulse or sine wave form, is applied to this grid and causes pulses of current to flow into the tuned current 9 during alternate halfcycles of the sub-harmonic frequency to maintain it in oscillation. Circuit component values are given for a 2.1 divider, but division by 10 is stated to be possible.
Patent GB-565532-A (GB)
Title: Improvements in or relating to internal shoe drum brakes
IPC: F16D65/09
Filed: 1943-02-23
Abstract: 565,532. Brakes. BENDIX AVIATION CORPORATION. Feb. 23, 1943, No. 2992. Convention date, May 11, 1942. [Class 103 (i)] A brake of the kind comprising a pair of shoes each arranged to anchor at one end or the other according to the direction of rotation of the drum is applied by a single hydraulic cylinder of which, according to Fig. 1, the cylinder proper 21 and the piston 22 respectively apply the shoes 13, 14 through thrust members 23, 26 engaging the shoes at 24, 25, 30, 31. The member 26 has an opening for the wheel axle as shown. The shoes anchor on a block 15 and on members 17, 18 slidable in a casing 16 and adjusted by a wedge disposed between their inner ends. When the brake is applied, the parts 21, 22, 23, 26 rotate slightly with the shoes to permit the shoes to anchor. In a modification, the cylinder contains a pair of pistons, one of which acts directly on the centre of the shoe 13 and the other on the member 26.
Patent GB-1022600-A (GB)
Title: Improvements in pressure-responsive switches
IPC: H01H35/34
Filed: 1964-07-28
Abstract: 1,022,600. Thermal switches. J. E. LINDBERG. July 28,1964, No. 30009/64. Addition to 961,147. Heading H2B. The pressure-responsive switch of the parent Specification is modified by having the metal electrode 21 on the convex side of the metal diaphragm 13 with its " blister " 14, said blister flexing to abruptly break contact when a critical fluid pressure is applied to the convex side thereof. The pressure may be kept such that at normal temperatures the blister 14 is flexed and is kept out of contact with electrode 21, and when the pressure falls to a critical value after a certain temperature rise the blister unflexes and makes contact to give an alarm signal. The switch may be used in an alarm system as described in Specification 961,143 (see Division G4), and the heatdetecting sensor 20 may contain a blowing agent as disclosed in Specification 961,148 or a metallic hydride which ingasses upon being heated and outgasses upon being cooled as disclosed in Specification 961,149.
Patent GB-510264-A (GB)
Title: Improvements in or relating to installations for removing sludge and fat from deposition chambers in sewage purification plants
IPC: C02F1/40
Filed: 1938-01-31
Abstract: 510,264. Gravity-separation apparatus. BECKHOLM, S. L. Jan. 31. 1938, No. 3015. Convention date, Feb. 1, 1937. [Class 111] A sludge scraper 10 and a 9, 16 respectively turning on skimmer 17 are fixed on arms pivots 8. 15 on a car 5, which is reciprocated on rails 4 over the cutting-tank by a motor 6. As the car moves to the left as shown on the Figure the scraper 10 pushes the sludge into a channel 11. When the car approaches the end of the tank a fixed stop, not shown, reverses the motor 6 or the drive of the car. At the same time an arm 12 meets a stop 13 and lifts the scraper 10 to an inoperative position, in which it is held by a pawl 14. The skimmer 17, which is formed as a float or provided with floats and had previously been held up in an inoperative position by a link 18 connected to the arms 9, is allowed to fall on to the surface of the liquid. It collects floating matter as the car passes back to the opposite end of the tank where an arm 22 fixed to the arms 16 slides on a fixed stop 20 and lifts the skimmer to discharge collected matter into a trough 24. Another fixed stop reverses the drive of the car and the circuit of an electromagnet 23 is closed to release the pawl 14. The scraper falls gradually to the operative position as an arm 21 slides over a stop 19.
Patent GB-1043085-A (GB)
Title: Power transmission plants for high voltage direct current
IPC: H02J3/36
Filed: 1964-01-24
Abstract: 1,043,085. Converting. ALLM€NNA SVENSKA ELEKTRISKA A.B. Jan. 24, 1964 [Jan. 30, 1963; March 25, 1963], No. 3111/64. Heading H2F. The Specification relates to HVDC power transmission systems with more than two converter stations. In Fig. 1, four stations I, II, III, IV are connected in parallel. Each has isolating switches and the sense of connection of station II may be reversed. Stations I and II may rectify and III and IV invert. Assuming that the voltage-current characteristic of each station is such that the direct voltage falls with increasing current, it is shown that, in the arrangement of Fig. 1, if current regulators are set in each station then the station with the lowest maximum voltage will determine the system voltage (i.e. the voltage between lines 1 and 2), the other three stations will determine their own current and the current in the voltage determining station will be such that the algebraic sum of the four currents is zero. According to the invention the sum of the current regulator settings of all the rectifying stations exceeds the sum of the current regulator settings of all the inverting stations by the current margin. The effect of small changes in the current settings is discussed (Figs. 2, 3, 4, not shown). A series arrangement is described (Fig. 5, not shown). In this case one station determines current and the others determine voltage.
Patent GB-666253-A (GB)
Title: Improvements relating to electromagnetic counting mechanisms
Inventor: CALDER ALBERT JOHN
IPC: H04M15/10
Filed: 1949-02-04
Abstract: 666,253. Manual exchanges. SIEMENS BROS. & CO., Ltd. Feb. 3, 1960 [Feb. 4, 1949], No. 3186/49. Class40(iv). [Also in Group XIX] For controlling a time check in a trunk telephone exchange, an external member is arranged to rotate a sleeve controlling contacts in the time check circuit, after which depression of the external member depresses a plunger to reset the clock mechanism. An external shell 5, Fig. 3, is held against depression until it has been turned to drive through a pair of balls 7 and screw-connected sleeves 8, 9 a contactcontrolling sleeve 3 to normal position, when coincidence of a pin 4 with a channel in the sleeve 3 permits depression of the member 5 to operate the clock-resetting plunger 2 which passes through the sleeve 3 and is held against rotation. In Fig. 5, the upper end. of the plunger 2 is recessed to take a projection 13 on the member 5, which is a plastic moulding with a metal insert 14, the lower edge of which has two tongues 15 engaging in longitudinal channels 16 in the sleeve 8. In Fig. 8, the member 5 has two longitudinal slots 25 embracing the heads of bolts 26 engaging the driving- sleeve 8. In Fig. 11, a knob 32 with a hexagonal head projects from the face 29 of the switchboard and drives the sleeve 8 rotatably to home position, after which the knob 32 and plunger 2 can be depressed.
Patent GB-1587811-A (GB)
Title: Ink jet pirnters
IPC: B41J2/13
Filed: 1978-01-26
Abstract: Inkjet printers with variable relative speed between the printing mechanism and the recording medium produce uneven print quality, as the trajectory of the ink droplets depends on the lateral velocity of the nozzle. The problem is overcome by continuous calculation of the advance time for triggering the printing process on the basis of the measurement of the instantaneous speed of the printing mechanism and a determination of its travelling position. Measurement and calculation are carried out by means of an electronic circuit which contains at least one phase-stabilised loop (220) which comprises a phase comparator/detector (222) and a voltage-controlled square-wave generator (226) and a frequency divider (228). The loop (220) is supplied with positional information. Its analog output signal (speed) is supplied via an AD converter (236) and a register (258), its digital output signal (position) is supplied via counters (232, 240) to a processor (242) in which the advance time is calculated. <IMAGE>
Patent GB-1272052-A (GB)
Title: Curable mixtures of polyglycidyl compounds, polyesters from aliphatic-cycloaliphatic dicarboxylic acids, and polycarboxylic acid anhydrides
IPC: C08G63/199
Filed: 1970-01-22
Abstract: 1,272,052. Epoxy resins. CIBA-GEIGY A.G. 22 Jan., 1970 [24 Jan., 1969], No. 3277/70. Heading C3B. Heat curable mixtures comprise: (I) a cycloaliphatic polyepoxide which contains at least one alicyclic 5- or 6-membered ring and an average of more than one glycidyl or #-methylglycidyl group bonded to a hetero-atom in the molecule; (II) a polyoarboxylic acid anhydride in an amount to provide 0À2-1À1 equivalent of anhydride groups per epoxide equivalent of I; and (III) a polyester X<SP>1</SP>-A-X<SP>2</SP> (0À02-0À4 mole per equivalent of epoxide groups in I), X<SP>1</SP> and X<SP>2</SP> each denote -OH or -COOH and A is a polyester residue obtained by condensation of a dimer of a C 14-24  unsaturated fatty acid with an aliphatic diol, III has M.W. 1100-8000. Examples of I are the diglycidyl ether of 2,2- bis-(4<SP>1</SP>-hydroxycyclohexyl)propane and the diglycidyl ester of tetra- or hex-hydrophthalic acid. The dimer acid may be derived from ricinenic acid or oleic acid. Suitable diols for forming III are ethylene glycol, diethylene glycol, 1,3-propylene glycol, 1,4-butylene glycol. 1,6-hexylene glycol and neopentyl glycol. Suitable polyesters may have the formulµ in which R<SP>1</SP> is the residue of the (optionally hydrogenated) dimeric acid and R<SP>2</SP> is the residue of the aliphatic diol.
Patent GB-865262-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/36
Filed: 1960-01-29
Abstract: 865,262. Suction cleaners. HALLSTROM, O. H. Jan. 29, 1960, No. 3291/60. Classes 8(1) and 8(2). In a wheel mounted canister typ( suction cleaner having a dust con tainer 1, Fig. 1, beneath a filter 3 and horizontally withdrawable from a motor fan casing 4 and a cover 2 the container 1 has means e.g., a pivoted wheel 27 serving to support it during the releasing movement and in its released position and the casing base 4a has a pair of wheels 28 which support the cleaner after removal of the container 1 and which co-operate with the wheel 2' to support the connected assembly, the cover 2 having a dust-laden air inlet 6 opening into the container 1 but allowing removal of the latter without need of displacement of said inlet 6. The container 1 in which is suspended a bag 25 is located by a gusset 22 having a roller 23 which after being guided up an inclined plane 24 of the casing 4 is engaged in a recess 24a. The container is secured by clamps 20. The filter 3 comprises cloth 11, Fig. 2, held in vertically extending folds by frames 8 projecting upwardly from a horizontal bar 10 removable from the casing cover 2 and by frames 9 projecting downwardly from a horizontal bar 12 connected to a spring-biased shaker rod 15 operated by a handle 16 when unscrewed from a socket 16a.
Patent GB-104533-A (GB)
Title: Incandescent-like Fire or Imitation Fire of Luminous Body for Domestic Fire-places, Stoves, Grates or the like.
Inventor: BASTIAN CHARLES ORME
IPC: F21V9/40
Filed: 1916-03-06
Abstract: 104,533. Bastian. C. O., and Berry, H. H. March 6, 1916. Imitation fires.-An incandescent-like imitation fire or luminous body for domestic fire-places consists of a quantity of transparent or translucent material, such as paper, linen or other fabric, or sheet gelatine, covered wholly or patchily with red or yellow fluorescent or other material illuminated by a lamp round which a screen, partly opaque and partly transparent, is rotated by the action nf the hot air rising from the lamp. Fig. 1 shows an electric lamp b surrounded by a screen k mounted, together with propeller-like vanes h, upon a frame f<1> rotating on a glass or like pivot e at the upper end of a support c. Preferably, the sheet material has a white or greyish ground. The lamp or the screen k may be wholly or partly painted red or with fluorescent paint, which may also be applied to a stationary screen surrounding the movable screen. Specification 1319/89 is referred to.
Patent GB-472373-A (GB)
Title: Improvements relating to fuel injection pumps for internal combustion engines
IPC: F02D1/00
Filed: 1937-02-04
Abstract: 472,373. Speed governors. DECKEL, F., (trading as DECKEL, PRAZISIONSMECHANIK UND MASCHINENBAU, F.). Feb. 4, 1937, No. 3342. Convention date, Feb. 15, 1936. [Class 57] The regulating rack 5 of a fuel-injection pump is adjusted by a disc 9 secured to a corrugated leather or other non- metallic bellows 11, the interior of which is exposed to the vacuum existing in the air induction pipe between the engine and a hand operated throttle valve. The casing 6 is centrally disposed relatively to the central plane E, E of the pump casing and the rack 5 is offset from this plane and fixed eccentrically to the disc. The casing 6 is fixed to the pump casing 1 by bolts 7, 8, the bolt 7 serving as a bearing for the rack and the bolt 8 may serve as a bearing for a guide rod 18 secured to the disc 9. The loading spring 14 serves as a support for the bellows. Alternatively, the bellows may be supported by rings and a separate loading spring provided. Specification 411,062, [Group XXVII], is referred to.
Patent GB-705676-A (GB)
Title: Magnetic means for producing compensations in a cathode ray tube
IPC: H01J29/54
Filed: 1951-02-12
Abstract: 705,676. Cathode-ray tubes. GILFILLAN BROS., Inc. Feb. 12, 1951 [May 29, 1950]. No. 3391/51. Class 39(1) For compensating deflection errors a plurality of pairs 17, 18 of magnets are arranged around the tube each pair being adjustable as a unit. As shown, the magnets are short cylinders magnetized diametrically and let into holes in a supporting strap 19 having a motion-limiting slot 20. The straps are bolted to a slotted ring 14. thus permitting circumferential and radial movement. The relative position of the magnets of each pair may be varied from that shown e.g. opposing, parallel opposing or parallel assisting. The magnets may be placed before or after the quadraturely-acting deflecting coils or plates.