baber/WOPTO huggingface dataset:
Patent GB-494536-A (GB)
Title: Improvements in television apparatus operating without phase distortion
IPC: H04N5/44
Filed: 1937-10-12
Abstract: 494,536. Valve amplifying circuits. MICHAELIS, E. Oct. 12, 1937, No. 27684. Convention date, Oct. 12, 1936. [Class 40 (v)] In a superheterodyne television receiver phase distortion in the intermediate frequency amplifier is corrected in an aperiodic stage or in the video frequency amplifier by coupling members producing equal and opposite phase distortion. The Figure shows an arrangement in which the coupling between the intermediate frequency valves I, V comprises an alternating current potentiometer comprising choke 2 and resistance 3 which may have a condenser 5 in parallel and a further potentiometer comprising resistance 7, choke 8, and condenser 9. A pure resistance coupling may be used in which case the value of the resistance is preferably between 5000 and 10,000 ohms. With a choke coupling the natural resonance should lie outside the band of frequencies to be amplified. Triode valves are preferably employed and the arrangement such that a single sideband is used in the intermediate frequency amplifier and the high picture frequencies are represented by the lowest frequencies. The couplings are preferably such that a cut-off is produced outside the bands of frequencies amplified. Correction in the video frequency amplifier may be effected by circuits tuned above the signal frequency range or by the use of a choke in the output of the detector. Phase distortion in transmitting amplifiers may similarly be corrected. In a modification, Fig. 1 (not shown.), an amplifier is employed having a number of stages each favouring a different wavelength, the anode resistances being so chosen as to have an impedance not greater than the effective valve capacitive reactance at the wavelength in question.
Patent GB-1374668-A (GB)
Title: Method and apparatus for continuous dyeing of yarns
IPC: D06B11/00
Filed: 1972-06-13
Abstract: 1374668 Yarn dyeing apparatus UNITIKA Ltd 13 June 1972 [14 June 1971] 27689/72 Heading D1L [Also in Division B6] Apparatus for dyeing a travelling yarn 2 fed from a bobbin 1 to a wind-up spool 10 comprises a dye applicator 5 having at least one discharge aperture through which dye is applied to the yarn from supply 6, a heater 4 located upstream of the applicator 5 and arranged to heat the yarn 2 to a temperature above the boiling point of the solvent used to dissolve the dye, and a drying unit 8 located downstream of applicator 5 to dry the dyed yarn. The dye applicator 5 preferably includes a U-shaped groove 13 (Fig. 2) through which the yarn 2 is passed and a discharge aperture 11 located at the bottom of the groove and supplied with dye via a dye supply pipe 12. The apparatus may be used for the space -or multicolour-dyeing of yarns by arranging two or more applicators 5 on the same or different sides of the travelling yarn and arranging these to discharge dyes of different or the same colour intermittently or continuously onto the yarn [Figs. 3A and B, not shown]. Other methods of producing mottle dyeing effects include selection of different sized apertures 11 in the dye applicator 5, incorporating gas bubbles into the dye solution before it is discharged, supplying a single applicator with two or more different coloured dyes in a random or patterned order (Fig. 8, not shown) or by shutting off the supply of dye to the applicator intermittently during the dyeing operation. This last method may be achieved using an applicator (Fig. 7) having a dye inlet 24 and a discharge aperture 25 connected via a passage 26 which may be randomly and intermittently shut off by reciprocating a piston 22 inside an electromagnet 21 and electric coil 27. Examples relate to the single colour intermittent dyeing of nylon 6 yarns and to the multicolour dyeing of nylon 6, polyester, wool and cotton yarns.
Patent GB-817310-A (GB)
Title: Improvements in or relating to clamps for fitting to containers
IPC: B66C1/62
Filed: 1957-09-03
Abstract: 817,310. Band clamps. RENFROE, R. L. Sept. 3, 1957, No. 27726/57. Class 44 [Also in Group XXX] A band clamp comprises a split circular resilient band 1 and an adjustable toggle locking mechanism whereby the ends of the band are brought towards each other, said mechanism comprising a lever 5 pivotally disposed in lugs 2 on one end of the band 1 and having rigidly attached thereto a connecting link 4. The latter is pivotally connected at its other end to a pin 7 between the forked ends 3 of a cradle 6 which, in a threaded collar 9 thereon, carries an adjusting bolt 8 for engagement with a stud 10 which is secured to a second part band 11 bolted at 12, 13 to the other end of the band 1. By means of the bolt 8 the band clamp can fit drums and barrels of various diameters, the band being clamped to the drum or barrel 17 by turning the lever 5, at the end of which movement the forked ends 3 of the cradle 6 lie between the lugs 2 and the lever 5 is received in a notch 24 in the forked ends 3. A number of lugs 14 may be attached to the band 1 to overlap the top of the drum or barrel 17 for positioning of the clamp and for preventing the drum or barrel from passing through the band 1 should the barrel become upset during handling thereof, for which latter purpose a chain sling may be attached to the band 1 by means of brackets 16.
Patent GB-1390840-A (GB)
Title: Cyano-oximes
IPC: C07F9/165
Filed: 1972-12-11
Abstract: 1390840 Cyano-oximes ABBOTT LABORATORIES 11 Dec 1972 [20 Dec 1971] 27773/74 Divided out of 1390839 Heading C2C The invention comprises compounds of formula (wherein X and Y are each H, halo, C 1-6  alkyl, CN or NO 2 ; and Z is O or S) with the exclusion of compounds in which the -C(CN)NOH group is in the 2- or 5-position of the hetero ring when Z is S; and their preparation from the corresponding compounds having a cyanomethyl (-CH 2 CN) group by reaction with an alkali metal alcoholate and a nitrosating agent, e.g. n-butyl nitrile. The products may be obtained in the form of their sodium salts which may be hydrolysed with HC1.
Patent GB-152600-A (GB)
Title: Gaskets for gas valves
IPC: B64B1/60
Filed: 1920-09-30
Abstract: 152,600. Goodyear Tire & Rubber Co., (Assignees of Maranville, A. G.). Oct. 16, 1919, [Convention date]. Aerostats.-For securing a valve to a ballcon envelope or other flexible gas container. a gasket 13 of rubber-impregnated fabric has a tapered edge 13<a> cemented between divided edges 14 of the container fabric, and a flange 17 on the gasket is secured against the valve-carrying ring 11 by a divided clamping band 16 tightened by a turnbuckle 15. Two bands 16 may be used. The flange 17 has a bead 18 entering a recess in the ring 11, and a bead 19 for retaining the band 16. The valve is bodily removable with the ring 11 when the band 16 is slackened. The gasket is reinforced with fabric at 13<b>. For supporting a manual operating device independently of the main valve mechanism, a yoke terminating in two pairs of divergent members 61 is secured to diametrically opposite parts of the rings 16 by brackets 16<a> as shown in Fig. 3. The Specification as open to inspection under Sect. 91 (3) (a) describes a valve as described in Specifications 152,599 and 152,601. This description does not appear in the Specification as accepted.
Patent GB-284416-A (GB)
Title: Means for mounting depressible brake shoes, plough shares, obstruction removers, and the like on vehicles
IPC: B61H13/02
Filed: 1926-11-05
Abstract: 284,416. Raymond, M. J. Nov. 5, 1926. Obstruction-removers and safety appliances.- Obstruction-removers, life-guards, &c. are mounted on vehicles by means of a spindle D having a square neck F vertically depressible against spring pressure and carrying a bridgepiece G, jams at each end of the bridge piece and at the end of the square neck being provided to hold the obstruction-removers &c. The spindle is depressed by means of spur wheels C engaging racks on a square part of the spindle D and operated by a hand wheel through shafts and bevel wheels, or a chain passing through an eyebolt on the top of the square block and anchored at one end and connected at the other end to a footboard, may be used for this purpose. It may be operated directly by the driver's foot, or alternatively by a screwed spindle and engaging a threaded hole in a bridge-piece K and operated by a hand-wheel L. The bridge-piece is pivoted on bolts M so that it may be moved out of operation.
Patent GB-1041918-A (GB)
Title: Compensator
IPC: H04N5/94
Filed: 1964-07-06
Abstract: 1,041,918. Television signal recording; tunnel diode clipping and switching circuits. MINNESOTA MINING & MANUFACTURING CO. July 6, 1964 [July 15, 1963], No. 27802/64. Headings H3T and H4F. Television.-A compensating circuit, Fig. 1, for suppressing defects due to " drop-outs " in a video signal frequency modulated on a carrier which is derived from a magnetic tape record comprises a demodulator 15 for producing a demodulated video signal, two branch circuits 22, 24 connected to the output of the demodulator, one branch 22 including a delay line 346 of delay time equal to the television line repetition period, a detector circuit 19 responsive to the modulated carrier to control a circuit 21 to provide a switching signal whenever the modulated carrier amplitude falls below a predetermined level, and switch means 276 adapted normally to pass only the relatively un-delayed signal from branch 24 to an output 350 but responsive to the switching signal to pass the relatively delayed signal from branch 22 to the output. The invention relies for its effectiveness on the inherent similarities between adjacent lines of a television picture. The bandwidth employed in the delay path 22 may be limited, e.g. to 200-500 kc/s. The carrier detector circuit 19 utilizes a tunnel diode 96. A ramp generator 164 is provided for briefly extending the switching period and in addition a small amount of delay 352 is included in the path 24 so that defect in the signal applied to switch 276 occurs within the switching period. A gate system 354 is provided for blocking switching action during synchronizing intervals. Tunnel diode and transistor circuits.-The frequency modulated carrier signal, Fig. 5A (not shown), is applied through transistor amplifier 36, 58, 60, Fig. 3 (not shown), which clips off the negative half cycles, Fig. 5B (not shown), to a tunnel diode 96 which utilizes the negative resistance portion of its characteristic to function as a two-state element whereby carrier 114, Fig. 5C (not shown), above a predetermined level is transmitted unattenuated, but carrier below the level is short-circuited and reduced to zero amplitude 116. The predetermined level is adjustable by potentiometer 52. The transmitted signal is amplified in transistors 122, 124, 126 and converted to a pulse 156, Fig. 5D (not shown), during the interval 116. A ramp generator 167, 169 extends the rear edge of the pulse, Fig. 5E (not shown), and triggers a Schmitt trigger 224, 240, Fig. 4 (not shown), via a pulse amplifier 206 to produce a pulse 275, Fig. 5F (not shown). An inverted pulse 277, Fig. 5G (not shown), is obtained by transistors 262 and switching signals via emitter follower 282, 298 which are applied to control diode switches 310, 312 connected between branches 22 and 24, Fig. 1, and the output point 314. The potential at the output point 314 is stabilized by a large capacitor 336.
Patent GB-437400-A (GB)
Title: Improvements in or relating to processes for the preparation and regeneration of activated carbon
IPC: C01B31/12
Filed: 1934-09-28
Abstract: In the formation of active carbon by the action of a solution of zinc chloride on materials such as peat, cellulose, wood dust, starch, sugar, exhausted or partially activated carbon, &c., the zinc chloride is preheated to a temperature of 240 DEG  C., the heating being preceded by the addition of small amounts of an organic material.  The material to be carbonized is also preheated to a temperature of 180 DEG  C. after having been mixed with a small amount of a highly concentrated solution of zinc chloride.  The heated material is then mixed with the preheated zinc chloride and the temperature raised to 290 DEG  C., after which an exothermic reaction sets in and the temperature rises to 400 DEG  C.  The mass is allowed to cool and is mixed with an aqueous solution of a carbon compound, e.g. a sugar, and again heated to 400 DEG  C. after which it is washed.  In regenerating exhausted carbon, part of the solution which it has been used to clarify may be left in the pores, or it may be washed out completely and replaced by another liquid such as sugar solution.
Patent GB-505836-A (GB)
Title: Improvements in or relating to the manufacture of optical lenses and prisms
IPC: B29D11/00
Filed: 1937-10-13
Abstract: 505,836. Moulding lenses &c. from synthetic resin. FRITZ, R. Oct. 13, 1937, Nos. 27872 and 27873. Convention dates, March 22, 1937 and Sept. 11, 1937. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 18, 1938.] Drawings to Specification. [Class 87 (ii)] Optical lenses and prisms, particularly ophthalmic lenses, are moulded from trans. parent, thermoplastic, organic substances in moulds of glass or quartz. The glass mould may be secured to a metal support and may have an interposed gypsum layer. The mould is polished to give the required lens surface. The organic substance may be a vinyl or acrylic ester. The mould may be heated or the heated material may be pressed between cold moulds. Specification 482,836 is referred to. The Specification as open to inspection under Sect. 91 includes also moulds formed of crystal such as Iceland spar, fluorspar or tourmaline, and refers to injection-moulding, to the use of polystyrene and cellulosic derivatives and to the manufacture of contact lenses. This subject-matter does not appear in the Specification as accepted.
Patent GB-659481-A (GB)
Title: Convertible electrically heated flat iron
IPC: D06F79/00
Filed: 1949-11-01
Abstract: 659,481. Electric heating. LANDON, E. C. Nov. 1, 1949, No. 27931. [Class 39(iii)] An electric heater comprises a flat iron body 10 to which are hinged at 18 handle members 16 normally disposed face to face but adapted to be swung apart into the plane of the iron at each side thereof to form a hot plate, the iron 10 and members 16 having heating elements 13 and 21 respectively. When used as a hot plate, the device is inserted and placed in an insulated tray 30 having means 40 for clipping thereto telescopic flexible standards for supporting clothes to be aired. A switch 65 enables the degree of heating to. be controlled.
Patent GB-1103762-A (GB)
Title: Disinfectant tablet
Inventor: THOMPSON JOHN HILTON
IPC: A61L9/05
Filed: 1963-10-23
Abstract: A solid disinfectant composition comprises trichlorocyanuric acid and/or one of its salts in a suitable vehicle which is inert to the acid, and enclosed in or covered with a water-soluble seal to prevent volatilization and/or decomposition of the disinfectant before use. The vehicle is preferably p-dichlorobenzene, naphthalene or a metallic gel such as one or more hydrocarbons or chlorinated hydrocarbons gelled with a stearate of aluminium, zinc or magnesium. Preferably, the tablet is enclosed in a sachet made of a water-soluble polyvinyl alcohol film.
Patent GB-365514-A (GB)
Title: Improved method of and apparatus for circulating the glass in glass furnace gathering basins
IPC: C03B5/18
Filed: 1930-09-19
Abstract: 365,514. Glass manufacture. MONCRIEFF, Ltd., J., St. Catherine's Road, and McNISH, A. F., 25, Balhousie Street, both in Perth. Sept. 19, 1930, No. 27993. [Class 56.] Delivering molten metal.- A method of circulating molten glass through a gathering basin or forehearth, particularly for supplying glass to machines which gather by suction, consists in conveying the glass in successive charges by means of a series of pockets moved step-by-step through the basin, and in providing means for wiping the cooled glass out of the pockets as they return to the furnace after leaving the gathering position. The basin 5 projects from the wall 4 of a furnace and its sides converge to a semi-circular wall 6 at its outer end. A vertical shaft 11 is journalled in a metal frame 10, and a wheel 12, made of refractory material and formed with pockets or cavities 23, is fixed to the lower end of the shaft and is situated within the basin. A transverse wall 7 extends across one side of the basin, and its front face 8 slopes downwards to provide clearance for a wiper 18 that projects from the lower end of a vertical shaft 17. The wheel 12 is rotated step-by-step by a reciprocating rack 15, and each pocket 23 carries to the gathering position C a portion of molten glass which is almost entirely segrated from the cooled glass remaining in the preceding pocket after a gathering operation. After a pocket has passed the position C, the cooled glass is wiped out by the rotation of the wiper 18 and returned to the furnace. A lever 27, rocked by a cam 24 on the rack 15, lifts the shaft 17 periodically so that the wiper 18 can clear the wall 7. The wheel 12 may be in the form of a fluted cylinder, and the pockets may be closed at their lower ends by providing the wheel with a base 29. In this case, the wheel is raised when at the gathering position C by a roller 31, attached to the shaft 11, which rests on a fixed cam 30. The basin may be covered-in except for an aperture at the gathering position.
Patent GB-234381-A (GB)
Title: Improvements in distributing devices for pneumatic hammers and similar pneumatic tools
IPC: B25D9/14
Filed: 1924-11-22
Abstract: 234,381. Paternoster, G. Nov. 22, 1924. Fluid-actuated gears. - In pneumatic hammers and like tools, the distributing-valve has two grooves 7, 8, is arranged coaxially within a sleeve at the rear of the cylinder which sleeve is provided with diametrically-opposed rows of radial ports 9 .. 14, is constantly subjected at each end to fluid pressure through ports 17, 18, and is reversed on opening the main exhaust 27 by the hammer 3. The supply is connected to the opposed end passages 12, 13; pots 11, 14 are connected to the atmosphere through passages 25, 26; ports 15, 16 are connected to the forward end of the cylinder by passage 22, and ports 9, 10 are connected to the rear end of the cylinder by passage 21. With the valve in the position shown, the hammer is moving downwards under the pressure of fluid supplied through ports 19, 13, 18, 9, 21; the front end of the hammer is exhausting through passage 22, ports 15, 11 by channel 8 in the valve, and passage 25. When the hammer 3 passes exhaust port 27, the fall of pressure on the lower end of the valve effects its reversal. Fluid pressure then passes through ports and passages 19, 17, 16, 21, 22 to the bottom of the cylinder, the upper end exhausting through passages 21, 10, 14, 26 and grooves 7 in the valve.
Patent GB-1199614-A (GB)
Title: Process for Producing 2-Amino-4-Substituted Butyric Acids and the Corresponding Hydantoins
IPC: C07D233/78
Filed: 1967-10-12
Abstract: 1,199,614. Hydantoins and their use in the production of amino-acids. NIPPON KAYAKU K.K. 12 Oct., 1967 [12 Oct., 1966; 19 Oct., 1966], No. 28127/69. Divided out of 1,199,613. Heading C2C. Hydantoin derivatives of the formula: wherein R is an alkyl group, which may be prepared by reacting a compound of the formula with hydrogen cyanide or a salt thereof and ammonium bicarbonate or ammonium carbonate or carbon dioxide and ammonia, may subsequently be hydrolysed to give compounds of the formula wherein R<SP>1</SP> is hydrogen or an alkyl radical. The reaction for producing the hydantoin may be effected in an aqueous solution or aqueous organic solvent under ambient or elevated temperature or pressure conditions. For the subsequent hydrolysis reaction the hydantoin may be separated from the reaction mixture or it may be hydrolysed in situ with conventional acids or alkalis to form the 2-amino-4-alkoxy- or -hydroxy-butyric acids. Further 2-amino-4- hydroxybutyric acid may also be obtained by hydrolysing the 2-amino-4-alkoxybutyric acids with hydrochloric or sulphuric acid. Specific examples are given in which the radicals R and R<SP>1</SP> (when alkyl) are methyl, ethyl, propyl and butyl.
Patent GB-838218-A (GB)
Title: Improvements relating to a mechanical selector mechanism for time controlled apparatus
IPC: G04C23/34
Filed: 1955-10-03
Abstract: 838,218. Time switches. VENNER Ltd., and HORGAN, W. F. Sept. 27, 1956 [Oct. 3, 1955], No. 28148/55. Class 38 (5). In a switch similar to that of Specification 586,178, the sevenpoint star wheel is replaced by a disc 64 having a raised star formation 65 adapted to be engaged by a pin carried by a rotatable dial so that the disc is rotated one-seventh of a revolution each day. The disc 64 carries seven selector elements 75 each of which is rotatable in an aperture 73 in the disc and has a spigot 81 located in an aperture 74 in a disc 70 fixed to a boss 66 of disc 64. Each element has two cams 79, 80 which co-operate respectively with the tails 89, 90 of levers 35, 36 which in turn co-operate with the tails 31, 32 of pawls 25, 26. The elements 75 also each have a part 78 having slightly concave sides engageable with a spring 82 so as to locate the element in each of four angular positions. The elements are rotatable by screwdriver slots 84 and are arranged opposite indicia showing the day of the week. The four positions of the elements are as follows: " blank," neither cam 79, 80 operative and normal switching occurs; " 1," cam 80 is out and one switching " off operation is omitted; " 2 " both cams out and no switching operation; and " 3," cam 79 out and one switching " on " operation is stopped. The disc 64 is held in its various positions by a spring 91.
Patent GB-1456957-A (GB)
Title: Transfer printing process
IPC: D06P5/28
Filed: 1975-07-04
Abstract: 1456957 Transfer printing BAYER AG 4 July 1975 [5 July 1974] 28279/75 Heading D1B Transfer printing especially of synthetic and partially synthetic polymeric materials is effected using a dye of formula:  in which R is a hydrogen atom or a methyl group. The substrate may be a polyester, polyamide, polyacrylonitrile, and cellulose triacetate. The dyes as above are incorporated in pastes and inks and are applied to paper, metal foils, cotton and linen fabrics which are used as temporary supports.
Patent GB-739164-A (GB)
Title: Improvements in or relating to flexible clamping devices for mine roof and like supports
IPC: E21D11/22
Filed: 1952-11-11
Abstract: 739,164. Arch supports for mine galleries. LINSINGEN, M. VON, [trading as BOCHUMER EISENHUTTE HEINTZMANN & CO.]. Nov. 11, 1952 [Nov. 17, 1951], No. 28375/52. Addition to 685,477. Class 20 (2). [Also in Group XXII] The clamping device for mine arch supports described in the parent Specification is modified in that the strop 6, Figs. 3, 4, is shaped from a piece of hoop iron, the ends of which are folded to form the thickened flanges 9. The folded flange portions may be flat or, as shown, arched transversely and edge welded to the flange portions below to provide spring action to the clamp. The clamp is coupled by a bevelled portion 8a to the end of the inner arch member 1 so as to move with it under roof pressure. The piece of hoop iron is given a preliminary bending in the cold state, and the bending is completed and bolt holes punched in the flanges in a die under hot forging.