baber/WOPTO huggingface dataset:
Patent GB-677800-A (GB)
Title: Control apparatus for the sequential operation of hydraulic motors
IPC: F15B13/07
Filed: 1950-07-19
Abstract: 677,800. Hydraulic machines ; valves actuated by auxiliary valves. BENDIX AVIATION CORPORATION. July 19, 1950 [July 26, 1949], No. 18057/50. Classes 69 (ii) and 135. A control valve for the sequential operation of a pair of hydraulic motors in a hydraulic system comprises a casing 11 having a supply port 15, an exhaust port 17, ports 23, 27 connected by ducts 25, 29 to opposite ends of a first motor 1, and ports 24, 28 connected by ducts 26, 30 having spring-loaded valves 13, 14 therein to opposite ends of a second motor 2. The casing 11 slidably mounts a fourlanded valve plunger 12 operable by a hand-lever L and having an axial blind bore 12d and radial holes 12e, 12f connecting the opposite ends of the bore to exhaust. The valves 13, 14 are operably associated with small plungers 20, 21 subjected to inlet pressure passing through a duct 19. In the neutral position of the valve, pressure liquid passes from the supply port 15 through an annular recess 16 to the exhaust port 17. On, e.g. moving the plunger 12 to the left, the land 12a cuts communication between the ports 15, 17 and pressure liquid is directed to the ducts 25, 26, the duct 26 remaining closed by its valve 13. The piston 4 of the motor 1 then begins to move outwards expelling liquid from its other side through the duct 29, port 27, bore 12d and holes 12f. When the piston 4 reaches the end of its stroke, pressure builds up in the ducts 26, 19, whence the valve 13 is unseated and the plunger 21 moved to the right to unseat the valve 14. Pressure liquid is then directed to the left-hand end of the motor 2 and exhausted from its right-hand end, the piston 8 of the motor 2 moving outwards. On the piston 8 reaching the end of its stroke, the plunger 12 is returned to its neutral position, the pistons 4, 8 remaining in their extreme outward position until movement of the plunger 12 to the right, whence the piston 4 moves downwards and on completion of its stroke the piston 8 moves inwards. The diameters of the plungers 20, 21 are slightly less than the diameters of the seats of the valves 13, 14 so that the valve functioning as an inlet valve always opens prior to that functioning as an exhaust valve.
Patent GB-751730-A (GB)
Title: Improvements in and relating to the stabilisation of alternating voltages
IPC: G05F1/42
Filed: 1953-06-30
Abstract: 751,730. Automatic voltage-regulating systems. FURZEHILL LABORATORIES, Ltd., BEALE, E. S. L., and MORSER, A. H. June 29, 1954 [June 30, 1953], No. 18145/53. Class 38 (4). [Also in Group XL (c)] An A.C. voltage stabilizer comprises a series impedance varied in accordance with variations in the input and output voltage. As shown, the source .10 is connected through an auto-transformer 12 (to allow for a range of input voltages) and a series impedance 14 formed by the secondary of a transformer 13. The control voltage is obtained from a potentiometer 18 connected across a part of the impedance and in series with a transformer 19, and the secondary of the transformer is connected in a bridge circuit containing a non-linear resistor in the form of lamps 21. The error signal from the bridge circuit if fed through a two-stage amplifier 27, 28 to a paraphase phase splitter 29, 30 which provides a cathode follower output and is directly coupled to push-pull tetrodes 16, 17 energized from the transformer 13, whereby to vary the impedance of the winding 14. Other features: (i) the third harmonic components due to lamps 21 are eliminated by a twin T filter 24; a phase corrector to compensate for the presence of the filter may be inserted before the amplifier, Fig. 2 (not shown); (ii) the quadrature component is balanced out by potentiometer 25 and capacitor 26; (iii) half-wave recti. fiers may be connected in the screen-grid circuits of the tetrodes 16, 17 to prevent the screens being driven negative.
Patent GB-327909-A (GB)
Title: An improved method of producing potassium nitrate
IPC: C01D9/08
Filed: 1929-06-13
Abstract: 327,909. Kaselitz, O., and Kali-Forschungs-Anstalt, Ges. June 13, 1929. Potassium nitrate; aluminium chloride.-Potassium nitrate is produced by introducing into a solution of potassium chloride, aluminium and nitrogen in the form of an oxygen compound, for example, aluminium nitrate, or alumina and nitrous gases or nitric acid. According to one method the aluminium and nitrogen in the form of an oxygen compound, as above, may be added to a solution of potassium chloride to form a solution saturated at 0‹ C. with potassium nitrate, aluminium nitrate and aluminium chloride (or preferably potassium nitrate, aluminium chloride and potassium chloride). This solution is concentrated, for instance at 50 mm. pressure at 50‹ C., and cooled to 20‹ C. when AlCl3.6H2O separates. To the mother liquor separated therefrom, potassium chloride and aluminium nitrate, equivalent to the aluminium chloride separated, are added, and water to replace that lost by evaporation and as water of crystallization. The solution is cooled to 0‹ C., potassium nitrate separated, the solution evaporated and the first operation repeated. Alternatively, aluminium and nitrogen in the form of an oxygen compound as above may be introduced into a solution of potassium chloride to form a solution saturated at 0‹ C. with potassium nitrate, aluminium chloride and aluminium nitrate, potassium chloride added to precipitate the potassium nitrate which is removed, and aluminium nitrate then added to precipitate aluminium chloride, which is removed by filtration. Potassium chloride is added to the filtrate and the first operation repeated. The potassium nitrate and aluminium chloride are slightly washed, and the wash liquors may be added to the mother liquors instead of water. The hydrated aluminium chloride may be calcined to give hydrochloric acid and alumina, which latter may be converted into aluminium nitrate, or added with nitrous gases or nitric acid to the reaction.
Patent GB-970836-A (GB)
Title: Improvements in solubilizing hydroxyethylcellulose
IPC: C08B11/20
Filed: 1963-05-08
Abstract: <PICT:0970836/C3/1> Clear and filterable solutions of hydroxyethyl cellulose are made by dissolving hydroxyethyl cellulose containing from 3.8-4.2% of substituted ethylene oxide based on the oven dry weight of the hydroxyethyl cellulose in an aqueous solution of sodium hydroxide, the concentration of hydroxyethyl cellulose and that of sodium hydroxide being defined by area (1) of Fig. 1, said solution being accomplished by the use of a continuous mixing sequence in which hydroxyethyl cellulose crumb and sodium hydroxide solution are fed simultaneously into a pre-mixing stage, then into a high-shear dispersion stage, chilled short of freezing to solubilize, warmed, filtered and de-aerated. U.S.A. Specification 2,847,411 is referred to.
Patent GB-355252-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B23/02
Filed: 1930-05-19
Abstract: 355,252. Knitting-machines. SPIERS, Ltd., W. anc. SPIERS, E., XL Works, Walnut Street, Leicester. May 19, 1930, No. 18382/31. Divided on 355,246. [Class 74 (ii).] Fashioned seamless hosiery &c. is made upon a warp machine having parallel needle beds and curved independently operated bearded needles. The needles 2 are arranged in outwardly concave beds 1 and are actuated by selector members 12 under the control of jacquard bands 15. The members 12 are arranged in beds 29 pivoted at 31 so that their inner ends are moved parallel to the beds 2. The jacquard band allows additional needles to be inserted for fashioning, and is preferably so designed that alternate needles are selected for operation at one pick of the jacquard drum 17, and the intermediate needles are selected at the next pick. The number of bobbins or other yarn supplies is thus halved. Guides 36, 37 are provided for supplying yarns to one bed of needles, and corresponding guides 36a, 37a are provided for the other bed, the guides being moved from the position shown in full lines to that shown in chain-dotted lines, and an auxiliary guide 38 is provided for supplying yarns to needles in both beds to unite the knitted webs to form tubular fabric. Sinkers or web-holders 6, knocking-over bars 7, and pressers 67 are provided. Specification 355,246 is referred to.
Patent GB-183032-A (GB)
Title: Improvements in means for securing broom handles to broom heads, handles or knobs tohandle bars, nuts to bolts, or other like connections
IPC: B25G3/00
Filed: 1921-07-07
Abstract: 183,032. Pinkney, J. July 7, 1921. Addition to 156,449, [Class 125 (iii), Stoppers &c.]. Handle - bars and handles. - Means for packing or locking socket joints, described in the parent Specification as applied to lids of jars &c., and to pipe joints, is modified by forming diametrical holes through the two parts, the packing being passed through the coinciding holes and the ends drawn in and laid in the grooves by rotating the parts relatively, and is applied to handle-bars &c. Fig. 5 shows a handle j and handle-bar k having diametrical holes n, p with the packing q passed through.
Patent GB-130575-A (GB)
Title: Improvements in or relating to Regulating Devices for use in Electrical Machinery.
IPC: G05F1/00
Filed: 1918-11-11
Abstract: 130,575. Soc. Anon. des Etablissements L. BlÚriot. July 31, 1918, [Convention date]. Dynamos, regulating; exciting.-One or more quick-acting regulators are used to control electric apparatus, for example the voltage of a generator, by not only periodically weakening or open-circuiting the field coil &c., but by causing therein a reversal of current flow in a continuous manner. In one arrangement, four regulators b<1>, b<2>, Fig. 1, are placed as a generator shunt to form a bridge, the field coil a being connected to opposite corners. With excess voltage, the regulators b<1> open and the regulators b<2> close. According as the voltage is high or low, the regulators cause a current flow in one direction or the other in the field coil. Two regulators may be used to produce the same effect or only one. In the latter case, the field coil a is connected to an intermediate brush d, the regulator completing the circuit to one or other of the main brushes according to the state of the voltage. A separate shunt field a' and series field a<2> may be used with the field a. One or more resistances may be used in the exciting circuits and the contacts of the regulator may be shunted by condensers, impedances, or resistance. The contacts on one side may be shunted by a resistance and a resistance included in the circuit on the other side. When a Rosenberg generator is used, the field coil is connected to the short-circuited arma. ture winding. The field coil may be excited by two halves of a battery, the direction of current flow depending on which portion is in circuit. The regulator may be used in systems as described in Specification 120,545, [Class 38 (iv), Electric supply and transmission systems &c.], in which a variable-speed generator and battery supply lamps, the voltage in which is maintained constant by a series resistance in the lamp circuit controlled by a quick-acting regulator. The regulator may control the field of an exciter instead of acting directly on the main field. The Specification as open to inspection under Sect. 91 (3) (a) describes also the following:- As applied to a battery charging and lighting system supplied from a dynamo A, Fig. 20 (Cancelled), the oppositely acting regulators b<1>, b<2> control exciting windings on the field of a machine D, whose armature is mounted on the dynamo shaft. The armature winding is placed between the battery and the lamps and controls the voltage supplied, the variation being effected by the regulators. The two regulators may be replaced by one. A motor E and exciting dynamo F are used as described in Specification 24629/14. This subject-matter does not appear in the Specification as accepted.
Patent GB-1430329-A (GB)
Title: Window regulator mechanism
IPC: H01M2/16
Filed: 1974-04-29
Abstract: 1430329 Vehicle window regulators FORD MOTOR CO Ltd 29 April 1974 [9 May 1973] 18587/74 Heading E2M A vehicle window regulator for sequentially operating two sliding window panel portions 18, 19 comprises a gear sector 23 pivotally mounted at 24 and engaged by a manual drive pinion 25, two arms 29, 26 which act on the panel portions and are pivoted at the pivot 24 and at 28, cam followers 39, 44 which engage in slots 41 and 53 in the arms, and a latch plate 46 which is pivoted at 47 to the arm 29, has a slot 45 which overlies the slot 53, and which pivots between one position (Fig. 3) in which it locks the arm 29 against movement and another position (Fig. 4) in which the arm 29 is locked to move with the sector 23. When both panel portions are in the raised position (Fig. 1) cam follower 44 is at the base of slots 45 and 53 and follower 39 is in end portion 42 of slot 41. Initial clockwise movement of the sector causes follower 39 to act on the side of slot portion 42 to move arm 26 and panel portion 18 downward; meanwhile follower 44 moves freely through the slots 45, 53 and by preventing the latch plate 46 from pivoting anticlockwise mantains a pin 55 on the plate in a keeper 56 thus locking the arm 29 against movement. When the panel 18 is fully lowered the position shown in Fig. 3 is reached-follower 39 moves out of slot portion 42 and thereafter can move freely along the remainder of slot 41; follower 44 has reached the end of slot 53 adjacent an end portion 52 of the slot 45 in the latch plate. Further clockwise rotation of the sector 23 allows a spring 65 to pull the latch plate anticlockwise about its pivot 47-pin 55 carries out of keeper 56 and slot portion 52 embraces follower 44 to lock the arm against the gear sector. As shown in Fig. 4, the panel portion 19 can then be lowered. Reverse movement of the gear sector will first raise panel portion 19, then allow pin 55 to engage the keeper 56 to pivot the latch back against spring 65. This allows follower to move freely down through the aligned slots 45, 53 while panel portion 18 is raised. Counter balance springs 61 and 63 act on the arms 26, 29 to aid the raising and lowering of the panel sections.
Patent GB-582381-A (GB)
Title: Improvements relating to air heaters
IPC: B64D13/08
Filed: 1944-09-28
Abstract: 582,381. Air heating stoves. RADIATION, Ltd., BENNETT, A. R., and PARK, J. Sept. 28, 1944, No. 18592. [Class 64 (i)] [Also in Group XI] An air heater, e.g., for warming aircraft, comprises a combustion chamber d closed at one end and having at the other an air inlet and a fuel inlet f, an air heating chamber a which surrounds the combustion chamber and has an air inlet at one end and an air outlet s at the other, an annular duct h situated in the air chamber and surrounding the combustion chamber, and pipes i interconnecting the closed end of the combustion chamber and the adjacent end of the duct h, the latter conveying the combustion products from the chamber d to an outlet k at the opposite end of the duct. The combustion chamber may be cylindrical or, as shown, tapered. Air enters the heating chamber a and the combustion chamber d through lateral inlets and is given a gyratory motion by helical partitions m, o at the inlet ends of the chambers. The pipes i are arranged tangentially. The combustion chamber d is slidably supported by a pair of rings t interconnected by radial arms M, and by fin-like supports v. A perforated conical baffle p confines combustion to the region of the liquid-fuel nozzle g and assists mixture of the fuel spray and air. According to the Provisional Specification, the inlet end of the air-heating chamber a is given a helical form, part of the air which enters that chamber passes into the combustion chamber, and the inlet end of the combustion chamber is slidably carried on the fuel nozzle.
Patent GB-817270-A (GB)
Title: Improvements in the production of hollow moulded articles
Inventor: PRIOR JOHN
IPC: B29C33/52
Filed: 1956-06-18
Abstract: 817,270. Moulding hollow articles. PRIOR ENGINEERING Ltd., J., and PRIOR, J. Nov. 12, 1956 [June 18, 1956 ; July 4, 1956; Aug. 25, 1956], Nos. 18750/56, 20658/56 and 26060/56. Class 87(2). [Also in Group VII] A door knob, doll part or as shown, heel is moulded from polystyrene, polyvinyl chloride or cellulose acetate, acetate butyrate or acetate propionate by injecting the moulding material into a mould D having a core B of low melting point alloy mounted on a peg d. After moulding, the heel and core are removed from the mould and the core removed from the heel by, e.g. immersing the heel in hot water or by injecting a jet of water through the aperture made by the peg d. The heel may be reinforced by a pin or tube (see Figs. 4 and 5, not shown).
Patent GB-146896-A (GB)
Title: Weighing machine
IPC: G01G23/18
Filed: 1920-07-06
Abstract: 146,896. Sprenger, C. May 27, 1914, [Convention date]. Printed records, apparatus for giving.-In a coin-freed weighing apparatus for issuing a ticket printed with the weight of the person on the platform, the type wheel is provided with teeth which control the setting of a half kilogram type in its printing or in its non-printing position. The driving device for printing and issuing the ticket is wound up by the operator by the act of opening a pivoted window for the purpose of removing the printed ticket. The type-wheel b which is automatically set according to the weight on the plat- 71 form carries a ring of teeth b<1> for engagement by a wedge-shaped head e<2> pivoted upon a rod f connecting levers e, g. The lever g carries at one extremity a half-kilogram type. The end of the head e<2> is provided with a notch e<3>. When the mechanism is released in known manner by the insertion of a coin, a weight s and a cord s<1> rotate a drum r connected by gearing to a cam-shaft c<1>. A cam c rocks the lever e through a spring connexion d and the wedge-shaped head e<2> is thrust against the teeth b<1>. If the wedge-shaped head enters between two teeth, as shown in Fig. 2b, the half kilogram type on the lever g is rocked into its printing position above a printing lever i. A pawl e<4> at the same time displaces the head e<2> laterally sufficient to adjust the type-wheel b to a whole-unit printing position. If, however, the notch e<3> in the wedge-shaped head engages the top of one of the teeth b<1>, the rod f fails to actuate the type lever g sufficiently to bring it into the printing position and the figures on the type disk b only are printed. Further rotation of the cam-shaft c<1> causes a cam h to actuate the printing lever i. A third cam k<1> actuates a lever k and a pusher t so as to feed another ticket from the shoot u and eject the printed ticket which drops on to a plate behind the pivoted window x. When the window is opened to remove the ticket, the weight s is restored to its original position by means of gearing l, m, o, p, lever y and pawl q<1>, a ratchet gear 'being used to prevent backward rotation of the cam-shaft c<1>.
Patent GB-940476-A (GB)
Title: Chain coupling for double-chain scraper conveyors
IPC: B65G19/24
Filed: 1960-05-27
Abstract: 940,476. Chain coupling for scraper conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. May 27, 1960 [June 11, 1959], No. 18867/60. Heading B8A. In a scraper conveyer, chain coupling 10 for coupling side chains 14, 15 to a scraper flight (not shown), is formed with a bulb at 20 to allow for wear due to frictional engagement with the scraper casing and is flattened at arms 12, 13 and bevelled at 17, 18 to receive the scraper flight therebetween, each arm 12, 13 having a transverse hole by which the coupling is bolted to the flight.
Patent GB-473715-A (GB)
Title: Improved method of preparing phosphorescent material
IPC: C09K11/56
Filed: 1936-07-10
Abstract: Pure zinc sulphide is prepared by dissolving commercially pure zinc sulphate in twice distilled water, electrolysing with platinum electrodes for two weeks at two volts, boiling several times with adsorption carbon, filtering, adding ammonia dissolved in twice distilled water, filtering, and introducing hydrogen sulphide, prepared from iron sulphide and hydrochloric acid and washed in dilute hydrochloric acid water, potassium hydrosulphide, and twice distilled water.  A small quantity of hydrogen sulphide is first introduced and the precipitate is filtered off, dried, heated with a flux to 400 DEG  C., and tested by means of cathode rays.  The partial precipitation is continued until the blue luminescence does not vary with further samples. The whole quantity of zinc salt is then precipitated as zinc sulphide, and after filtering and drying heated with pure sulphur in a hydrogen atmosphere to 400 DEG  C. Cadmium sulphide may be similarly prepared, the control test being made on precipitated samples mixed with appropriate quantities of the pure zinc sulphide.
Patent GB-727392-A (GB)
Title: Improvements in or relating to fluorescent lamps
IPC: C09K11/73
Filed: 1950-08-02
Abstract: 727,392. Luminescent materials. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., DOHERTY, M. T., and SERGEANT, G. July 27, 1951 [Aug. 2, 1950], No. 19304/50. Class 39 (1). A fluorescent discharge lamp containing mercury at low pressure has a fluorescent coating mixture consisting of or including one or more halophosphate powders and a red-fluorescing magnesium germanate powder. Preferably one or more calcium halophosphate powders prepared as described in Specification 592,675 are used, the magnesium germanate powder forming at least 10 per cent by weight of the mixture. In one example the fluorescent coating consists of a mixture of 100 parts by weight of a calcium halophosphate powder constituted to give a " natural " colour, 20 parts by weight of a calcium halophosphate powder constituted to give a blue colour, and 20 parts by weight of red-fluorescing magnesium germanate powder, the mixture producing light of " daylight " quality. In a second example the mixture consists of 100 parts by weight of a calcium halophosphate powder constituted to give a warm-white " colour, and 30 parts by weight of red-fluorescirig magnesium germanate powder. In a third example 100 parts by weight of a " warm white " calcium halophosphate powder are mixed with 50 parts by weight of redfluorescing magnesium germanate powder. The magnesium germanate can be manganese activated and part of the germanium can be substituted by titanium or zirconium as described in Specification 721,993.