baber/WOPTO huggingface dataset:
Patent GB-994530-A (GB)
Title: Improvements in or relating to bearing arrangements for surfaces which slide relatively the one to the other
IPC: B23Q1/38
Filed: 1963-03-25
Abstract: 994,530. Bearings. PHILIPS' GLOEILAMPENFABRIEKEN. N. V. March 25, 1963 [March 28, 1962], No. 11688/63. Heading F2A. [Also in Division B3] In a fluid bearing, one of the parts is provided with at least one magnet and the other part is provided with at least one magnet or is made at least partly of ferromagnetic material, so that the co-operating faces of the two parts are drawn towards each other. In an embodiment as shown in Figs. 3 and 4, the fluid bearing is also a rectilinear bearing and comprises a fixed member 31 and a movable member 33. The former being of ferro-magnetic material and the latter being of non-magnetic material, having magnets 35, 37 inserted therein, and having ducts therein which are connected to a pressurized-air supply (not shown). The pressurized-air is passed to the clearances between guiding faces 47, 43 and 45, 41 of the fixed and moving members so as to form an air-cushion therebetween. The magnets may be positioned so as to balance thrust caused by a machining operation, for example, are preferably inserted in the smaller of the relatively movable members; and may be electro-magnets. The co-operating faces of the members may be curved as shown in Fig. 5. The clearance between the members may be maintained constant by using a known feeler device with variable capacitor so as to vary the energizing current of the electromagnets.
Patent GB-131114-A (GB)
Title: Improvements in Telephone Repeater Systems.
Inventor: ROBINSON CHARLES
IPC: H03F3/64
Filed: 1918-07-17
Abstract: 131,114. Robinson, C., and Chamney, R. M. July 17, 1918. Telephonic repeaters.-A repeater is connected to a telephone circuit by means of a transformer C having two equal windings connected in series with each line, and a third winding connected to the repeater, the other side of which is connected to a balancing circuit D. The arrangement of the repeater is the same as that described in Specification 131,113.
Patent GB-968469-A (GB)
Title: Process for continuously making wool resistant to shrinking and felting
IPC: D06M11/50
Filed: 1962-03-27
Abstract: Wool is rendered resistant to felting and shrinking by a continuous process which comprises impregnating it in an aqueous, non-reactive liquor having a pH value of 6.5-8 and containing a chloramine or chloramide, transferring it to an aqueous active liquor having a pH value below 3 and containing chloride and bromide ions and then dechlorinating it, e.g. in a sodium bisulphite or sodium thiosulphate bath.  Suitable chloramines are the chlorination products of ammonia, methylamine, dimethylamine, glycine and taurine and suitable chloramides are N-monochlorurea, N chloracetamide, N:N dichloracetamide, N:N dichlorobiuret, N-chlorosuccinimide, N-chlorurethane, N-chlorosulphamic acid, N-chloro-p-toluenesulphonamide, N:N-dichloro-p-toluenesulphonamide, N-mono-chloro-5,5-dimethylhydantoin, N-monochloro-5-methyl-5-isobutyl-hydantoin, 1:3-dichloro-5-methyl-5-ethyl-hydantoin, 1:3-dichloro-5-methyl-5-isobutyl-hydantoin, 1:3-dichloro-5 methyl-5-phenyl-hydantoin, N-chlorinated alkylol melamines and N chlorinated 1:3:5-triazines, e.g. tetra chloromelamines and mono-, di- or tri-chloro isocyanuric acid.  The chloramine or chloramide may be formed in situ by the action of sodium hypochlorite solution on the corresponding amine or amide.  The chloramide or chloramine solution may contain a non ionic dispersant which is stable towards chlorine, e.g. the reaction product of a felting alcohol and ethylene oxide, and the treatment with this solution may be effected at room temperature for 10-60 seconds.  The bromide and chloride ions in the active liquor may be provided by hydrobromic or hydrochloric acid or their alkali metal salts, an organic acid, e.g. formic or acetic acid, or a strong mineral acid, e.g. hydrochloric, nitric or sulphuric acid preferably being added when a salt is used.  The amount of chloride ions present is preferably 50-400 times that of the bromide ions.  The temperature of the second bath is preferably 25 DEG -60 DEG C. and the time of treatment 20-180 seconds.  The wool may be rinsed and finally softened by treatment with an aqueous bath containing the acetate of the condensation product of 1 molecular proportion of stearic acid methylolamide with 1 molecular proportion of triethanolamine.  Specification 774,531 is referred to.
Patent GB-275703-A (GB)
Title: Arrangement for weaving a new style of selvedge on the edges of cloth woven in chenille weft looms
IPC: D03D39/00
Filed: 1926-05-05
Abstract: 275,703. Hunt, C. A., and Champion, S. S. May 5, 1926. Chenille.-In weaving cloth to be cut up into strips used as chenille wefts, wires are woven temporarily into the edges of the cloth to form selvage warps over which the weft passes. The wires c, c<1> in the form of steel tapes are attached at one end to the sides of heald frames A, A<1>, the other ends of the wires being free so that they are withdrawn from the fabric as the weaving proceeds. After the fabric is cut into strips, the selvage strips have fur or pile on each side and can be utilized just like the intermediate strips.
Patent GB-688396-A (GB)
Title: Improvements in and relating to magnetic amplifier circuits
IPC: H03F9/02
Filed: 1950-05-11
Abstract: 688,396. Magnetic amplifiers. BRITISH THOMSON-HOUSTON CO., Ltd. May 11, 1950 [May 21, 1949], No. 11788/50. Class 40 (iv). [Also in Group XXXV] In a self-saturating magnetic amplifier in which each of a pair of load windings is connected in one of the unidirectional current circuits of a full-wave bridge rectifier, a control or compensating winding 6 is energized by pulsating current derived from the mains through a phase-shifting network to control the output from the rectifier bridge in accordance with mains variations. The amplifier 1, Fig. 1, is shown in a circuit for regulating the voltage of an alternator 15, the output of which supplies load windings 3 and 4 alternately during alternate half-cycles through bridge rectifier 7. Compensating winding 6 is energized through a phase-shifting circuit comprising a condenser 18 and a resistance 17, and a rectifier 19. A standing flux greater than that due to winding 6 is supplied by a winding 5 to determine in conjunction with winding 6 at which point in each half-cycle the reactor becomes saturated. A drop in the output voltage decreases the flux from winding 6 to cause self-saturation by the load windings earlier in each half cycle, so that the average output to field windings 16 is increased. Adjustment is obtained by a variable resistor 26. Compensation for the effects of changes of frequency on the regulating system is effected both by the different phaseshift of the control current and by the change in reactance of the condenser 18. Compensation for wave-form distortion is also effected by condenser 18.
Patent GB-763146-A (GB)
Title: Monoetherification of mono-tertiarybutyl hydroquinone using a hydrocarbon solvent
Filed: 1954-04-23
Abstract: A mixture of a 2-tert.-butyl-4-alkoxyphenol and a 3-tert.-butyl-4-alkoxyphenol is prepared by reacting with agitation at elevated temperature mono-tert.-butyl hydroquinone with at least a stoichiometrically equivalent quantity of a dialkyl sulphate, alkyl acid sulphate, alkyl chloride, or alkyl phosphate, wherein each alkyl group contains 1-4 carbon atoms, said reaction being conducted in a medium comprising a non-aqueous liquid phase containing an aliphatic or aromatic hydrocarbon of 5-10 carbon atoms and an aqueous liquid phase maintained alkaline by the addition of an alkali during the course of the reaction.  A reducing substance such as comminuted zinc or sodium hydrosulphite may be present, and an inert atmosphere may be used.  Alkylating agents specified are diethyl and dimethyl sulphate, di-tert.-butyl sulphate, propyl and methyl acid sulphates, methyl, sec.-butyl and isopropyl chlorides, trimethyl and triethyl phosphate.  In examples, mono-tert.-butyl hydroquinone is alkylated with dimethyl sulphate in toluene, n-heptane, or xylene in presence of zinc dust and aqueous caustic soda.  Specification 761,613 is referred to.
Patent GB-611750-A (GB)
Title: Improvements in or relating to mechanical presses
IPC: B30B15/00
Filed: 1946-04-17
Abstract: 611,750. Togglepresses. BOBST & FILS SOC. ANON., J. April 17, 1946. No. 11904. Convention date, April 18, 1945. [Class 87 (ii)] The moving platen 5 of a press is actuated by four toggles, two of which are shown at 6 and 7, situated at the corners of a quadrilateral and operated by four connecting rods 9, 10, 11, 12 pivoted at one end to the knuckle joints of the toggles and at the o her to the crank pins of a four throw crankshaft 14. The throws are arranged in two pairs on either side of a central driving wheel 13, the members of each pair being diametrically opposed. This eliminates side thrust on the platen and its guides. The driving gear is positioned entirely within the space defined by the four toggles and can be totally enclosed in which case inlet and outlet valves 23, 24 are provided in the casing 20, 21 to prevent an alternating partial vacuum and excess pressure as the platen reciprocates. Feeding mechanism comprising endless chains, one shown at 26, carrying gripping devices 25 for the work material and moved by wheels on a shaft 27 may be worked from the crank-shaft 14 by providing thereon a flange 36 carrying a crank-pin 37 and formed with a peripheral cam slot 28 The crankpin through a rod 29 reciprocates a toothed sector 30 engaging a pinion 31 loose on the shaft 27 and this pinion is periodically coupled and uncoupled to the shaft 27 to move forward the chains 26 intermittently by a dog-clutch operated through links 32, 33, from the cam groove 28. The working pressure may be adjusted by wedges 35 beneath the lowermost toggle joints operated by screw and wheel mechanism (not shown) from outside the casing. The crank-shaft may be driven as shown by a worm gear from a driving shaft at right angles or from a parallel shaft by gears giving a choice of speeds.
Patent GB-854509-A (GB)
Title: Process for the manufacture and recovery of chlorendic anhydride
IPC: C07C61/28
Filed: 1957-04-11
Abstract: A process for the preparation and recovery of chlorendic anhydride comprises reacting hexachlorocyclopentadiene and maleic anhydride in the presence of a chlorinated benzene liquid at ordinary temperatures as solvent at an elevated temperature, crystallizing the chlorendic anhydride so formed from the solvent and recovering the crystalline product so formed.  Solvents mentioned include monochlorobenzene, o- and m-dichlorobenzene and mixtures thereof.  Examples are furnished. Specification 614,931 is referred to.
Patent GB-1319215-A (GB)
Title: Notch filter
IPC: H03H11/12
Filed: 1972-03-15
Abstract: 1319215 Colour television circuits; amplifiers GENERAL ELECTRIC CO 15 March 1972 [17 March 1971] 12023/72 Headings H3W and H4F A symmetrical filter, particularly a notch filter for separating chrominance frequency components from the luminance frequency band of a colour television signal, comprises a delay line 11 producing linear changes in phase with frequency, a bandpass filter 10 producing linear changes in phase with frequency and also producing equal and opposite phase shifts for equal frequency deviations above and below a centretuned frequency, and means 14 for subtracting the signal passed by the bandpass filter from that passed by the delay line when a wide band signal is coupled to the input of each component 10 and 11. Preferably the characteristic impedances of components 10 and 11 are equal to each other and equal to the ohmic value of each of two coupling resistances 12, 13. The bandpass filter 10 has a bandwidth of approximately 500 KHz and is centre-tuned at 3À58 MHz. The attenuation of the signal passed by filter 10 is adjusted using potentiometer 15 and this signal is passed through an impedance matching amplifier and an adjustable delay line 17, exhibiting a liear change in phase with frequency, to equalize the delays introduced in the two channels. The overall delay may be 700 nanoseconds in delay line 11.
Patent GB-436808-A (GB)
Title: Improvements in composite units of inductance and capacity
IPC: H03H7/01
Filed: 1934-04-21
Abstract: 436,808. Wireless receiving-apparatus. COLE, Ltd., E. K., Priory Crescent, Southendon-Sea, MARTIN, A. W., 1, Thames Close, Leigh-on-Sea, and HUNT, H., 37, Highfield Grove, Westcliff-on-Sea. April 21, 1934, No. 12030. [Class 40 (v)] A structural combination of inductance coils and condensers,applicable particularly to fixed tuned stages of intermediate frequency amplifiers in superheterodyne receivers, comprises a T-shaped insulating member, the vertical limb 3 of which carries the inductances 7, the condensers 5 being housed in recesses 4 formed in the cross limb 2. The limb 3 may be tubular to receive a powdered iron core and the whole is mounted on a screening casing 11 by the nut 12. The condensers 5 are adjustable by means of the nuts 9. In a modification shown in Fig. 5, three inductances are mounted on the insulating member 3, the third coil 51 having a trimmer condenser 52 mounted on a bracket 53. Specification 412,764, is referred to.
Patent GB-369438-A (GB)
Title: Improvements relating to electric clocks
IPC: G04C15/00
Filed: 1931-04-23
Abstract: 369,438. Electric clocks. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., Edgware Road, Cricklewood, and DORER, P. O., 36, Manor Lane, Lee, both in London. April 23, 1931, No. 12033. [Class 139.] In electric clocks driven directly by a synchronous motor a starting impulse is imparted to the motor when the hands are set. The motor spindle a geared to the hands carries a ratchet wheel c adapted to be engaged by a pawl f pivotally sprung to the end of a lever d pivoted at n. To set the hands, a spindle h is depressed, a toothed wheel thereon meshing with a wheel k geared to the hands which are set by rotation of the finger piece i. During depression of the spindle h, the conical portion m thereof rocks the lever d in opposition to the spring e, the pawl f passing idly over the teeth of wheel c. When released the spindle h is returned by a spring l, the pawl f striking a tooth of wheel c to start the motor.
Patent GB-352999-A (GB)
Title: Improvements in the manufacture of aralkyl ethers of cellulose
IPC: C08B11/20
Filed: 1930-04-16
Abstract: The viscosity of aralkyl ethers of cellulose is lowered, substantially without the formation of highly degraded products, by treatment with a hot dilute acid under pressure.  Inorganic or organic acids may be used, with or without wetting agents, and may be dissolved in water, alcohol or other solvent.  The cellulose ether may be given a preliminary treatment with a swelling agent such as an aromatic hydrocarbon.  The kiering of the cellulose ether results in an increase in solubility in amount depending upon the particular solvents used, and yields a product retaining its film-forming and water-resisting properties.  In examples (1) benzyl cellulose is heated under pressure with 0,75 per cent hydrochloric acid, (2) benzyl cellulose is treated under pressure with 1 per cent oxalic acid, (3) benzyl cellulose, swollen by means of an organic solvent, such as an aromatic hydrocarbon, is heated under pressure with 0,25 per cent hydrochloric acid, (4) benzyl cellulose is heated under pressure with 0,5 per cent hydrochloric acid to which has been added a wetting agent such as oleic acid or glycerine.  Specification 333,902, [Class 2 (ii), Cellulose &c.], is referred to.
Patent GB-449930-A (GB)
Title: Improvements in and relating to spectacle frames
IPC: G02C5/02
Filed: 1935-04-18
Abstract: 449,930. Spectacle frames, WISEMAN, M., 72, Leather Lane, London. April 18, 1935, No. 12055. [Class 97 (i)] In a spectacle frame in which the bridge member and placquet arms are in one piece, the bridge member 1 has terminal parts 3 extending downwards from the ends of the bridge where it is attached to the rims 5, and formed at their ends 4 to constitute placquets to bear directly on the nose of the wearer. The bridge is soldered to the eye-rims 5, the solder extending along substantially one third of the length of the terminal parts 3 to give rigidity. The placquet ends 4 may be oval or pear-shaped-and are convex on their inner faces.
Patent GB-152629-A (GB)
Title: Improvements in stiffeners or strengthenings for wooden posts, poles and similar objects which are buried in the ground and liable to become defective
IPC: E04H12/22
Filed: 1920-05-01
Abstract: 152,629. Schultz, E. Oct. 10, 1919, [Convention date]. Addition to 132,515, [Class 20 (ii), Buildings and structures, Miscellaneous accessories &c.]. Piles. - Relates to improvements in the process described in in the parent Specification for repairing and strengthening the bases of posts and other structures. Segmental blocks a of concrete are cast in the factory to fit round the post, metal stay-rods b being cast therein, which can be clamped round the post above the blocks. The blocks are secured together around the post by any suitable form of clamp c. After the repair has been effected a bonnet or cap of concrete is cast over blocks.
Patent GB-786946-A (GB)
Title: Improvements in or relating to forced hot-air generators
IPC: F24H3/06
Filed: 1956-04-20
Abstract: 786,946. Air heating stoves. CARRETTE, M. April 20, 1956 [April 23, 1955], No. 12200/56. Class 64(1) An air-heating apparatus comprises a combustion chamber 5, a source of heat, such as a liquid fuel burner 3, an air-circulation chamber 6, a fresh air blower 2, a heat exchanger 9 formed by a system of plates between which the burnt gases 7 flow substantially vertically and the air 8 to be heated flows substantially horizontally, and air conduits 10 passing through the chamber 5 and above which are provided means, such as refractory bricks 11, to lengthen the path of the burnt gases. The conduits 10 connect the zones of the circulation chamber 6, which are respectively at the front and rear of the combustion chamber 5. An outlet 4 is provided for the hot air and a second outlet (not shown) for the burnt gases is provided in the vicinity of the base of the apparatus. Forced fresh air circulated in the space between a wall 12 and the outer wall 1 of the apparatus prevents excessive heating of the latter.
Patent GB-1067381-A (GB)
Title: Method of fabricating a strip of snap fastener socket members
IPC: B26D1/00
Filed: 1965-03-23
Abstract: 1,067,381. Moulding snap fasteners. UNITED-CARR Inc. March 23, 1965 [March 27, 1964], No. 12252/65. Heading B5A. In a method of moulding a strip of snap fastener members, a strip of plastics material is simultaneously heated and embossed and then each embossment is shaped to provide means for engaging a co-operating snap fastener member. The strip may then be fed to heat-sealing apparatus where the individual fastener members are heat-sealed to a garment. A strip of vinyl plastics (16) is fed on to a lower die (12), and a punch (14) descends carried by a plate (1) which is connected to a high-frequency generator. The plate is simultaneously energized whereby the punch acts as an electrode so that the plastics strip is di-electrically heated and is thus embossed by the punch and die the embossment comprising an upstanding annular ridge (20) in its upper surface formed by a corresponding cavity in the punch, and a cavity, formed by a corresponding raised portion in the die, in its lower surface within the confines of the annular ridge. The plate then ascends, the strip moves on and the operation is repeated. The embossed strip moves on to a support (15) under a set of punches fixed to the plate (1) through an insulator (11). The first punch (5) blanks out the portion of the embossment within the confines of the annular ridge and provides a central aperture (21) having a peripheral lip (22). Punches (6), (7), (9) and (10) serve to position the strip and a cutter (8) outlines the socket fastener member leaving a tab (23) joining adjacent sockets. Each fastener now comprises an annular ridge (20) surrounded by a flange (25). The strip is then fed on to a hexagonal rotating head (8a) to be heat-sealed to a garment (24). When the socket is in the lowermost position on the head, the head descends and is simultaneously energized. The flange (25) is pressed against the garment, the remainder of the socket being located in a cavity in the head (8a), and the fastener is dielectrically heat-sealed to the garment.
Patent GB-562171-A (GB)
Title: Improvements in and relating to flexible couplings, flexible mountings, and the like
IPC: F16D3/76
Filed: 1942-09-01
Abstract: 562,171. Flexible couplings, mountings and the like. METALASTIK, Ltd., and GOLDSCHMIDT, M. Sept. 1, 1942, No. 12292. [Classes 80 (ii) and 80 (iv)] A one-way elastic coupling between shafts or parts loaded in torsion comprises rubber or like material bonded to spiral-like surfaces x-x, y-y, on the connected parts a, b, so that under low loads the rubber is stressed mainly in shear and under higher loads the rubber is stressed more and more in compression. As shown, the surfaces are arcs of equal circles struck out from centres d<1>, e<1>, on a circle concentric with the coupling axis z. As shown in Fig.. 3, b is fixed to a member h keyed to a shaft f and a is fixed to a sleeve j fixed to a shaft g. Bearings k are arranged between the member hand sleeve j. The invention may be applied to engine or like mountings.
Patent GB-224821-A (GB)
Title: Improvements in valves for sterilising apparatus
IPC: A61L2/26
Filed: 1924-05-20
Abstract: 224,821. Mascall, G. S. May 20, 1924. Disinfecting-chamber-A sterilizing-apparatus of the kind comprising an inner chamber 4 and an outer chamber 2 forming a steam jacket, is provided with a valve, the single plug 6 of which has bores 13, 15, 16 and an ejector nozzle 14. In one position of the valve, steam from the chamber 2 passes through the nozzle 14 and creates a partial vacuum in the chamber 4, in a second position of the valve steam from the chamber 2 passes through the U-shaped bore 16 into the chamber 4, while in a third position of the valve communication is cut off with both the inner and outer chambers. Specification 187,398 is referred to.