baber/WOPTO huggingface dataset:
Patent GB-1389908-A (GB)
Title: Esters of bis-beta-hydroxyethyl terephthalate
IPC: C07C69/82
Filed: 1972-06-30
Abstract: 1389908 Esters of* bis-(beta-hydroxyethyl)- tetraphthalate HALCON INTERNATIONAL Inc 30 June 1972 [1 July 1971] 30795/72 Heading C2C A method of preparing a di(lower carboxylate ester) of bis-(beta-hydroxyethyl)terephthalate and/or oligomers thereof comprises contacting a mono-(beta-acyloxyethyl)terephthalate the acyl group of which is formyl, acetyl or propionyl, with a di-(lower carboxylate ester) of ethylene glycol or a mixture of said di-ester of ethylene glycol with the corresponding monoester of ethylene glycol in the liquid phase at a reaction temperature from 100‹ to 350‹ C. and, at reaction temperatures below 150‹ C., in the presence of an acidic catalyst. Examples describe the preparation of bis-(beta-acetoxyethyl)terephthalate and the corresponding betaformyloxy- and -propronoxyethyl-compounds.
Patent GB-649778-A (GB)
Title: A new or improved control valve unit
IPC: F16K11/083
Filed: 1947-11-21
Abstract: 649,778. Fire-engines. WINN & CO., Ltd., C., and HINCHLEY, E. R. W. Nov. 21, 1947, No. 30866. [Class 47 (ii)] [Also in Group XXIX] A control valve unit, suitable for use in a fireengine, comprises a multiple-way plug cock combined with an independently operable three-way plug cock. By rotating the multiple-way plug 17, Fig. 4, water may be delivered (a) from a tank via a port 12, Fig. 3, when a valve 21 is opened by a cam 22 on the plug spindle, through a casing passage 20, plug passage 18, Fig. 5, casing passage 32 to a pump suction port 13 and from the pump to the pump delivery port 14, Fig. 6, casing passage 33, plug passage 19 and casing passage 34 to a delivery passage ; (b) from a hydrant via port 11, plug passages 35, 19<SP>1</SP>, 19, and passage 34 to the delivery ; (c) from the hydrant via port 11, passages 18, 32 and port 13 to the pump and via port 14 and passages 33, 19, 19<SP>1</SP>, 34 to the delivery ; or (d) from the hydrant via port 11 and passages 18, 20, to the tank, in which case the cam 22 again opens the valve 21. In another position of the plug the hydrant, tank and pump are all cut off from the delivery. The three-way cock in the delivery passage allows water to pass either or both of two outlets, e.g. hoses. Specification 342,040, [Group XXIX], is referred to.
Patent GB-785820-A (GB)
Title: Chrominance circuit for colour television receiver
IPC: H04N11/14
Filed: 1955-10-28
Abstract: 785,820. Radio receiving apparatus. STANDARD TELEPHONES & CABLES, Ltd. Oct. 28, 1955 [Nov. 29, 1954], No. 30892/55. Class 40 (5). In a chrominance circuit comprising a chroma amplifier 3, Fig. I, demodulator 4 and amplifier 6, the amplifier is given a frequency response which is the complement of the response of band-pass circuit in the chroma amplifier to provide a substantially linear response. The chrominance signals applied to amplifier 9, Fig. 2, pass through band-pass coupling 10 giving at point A a response as in Fig. 3. The signals are fed from potentiometer 16 to demodulators 20, 23 and to the colour burst gate 15 which in turn supplies signals to the demodulators. The output from discharge tube 20 is fed through a carrier-filtering and peaking network 25 to the amplifier 29 where the response is as curve B. Since the amplifier 29 has a characteristic C the resulting output curve D is substantially linear.
Patent GB-1273397-A (GB)
Title: Sofa bed
Inventor: MIKOS ALOYSIUS JOSEPH
IPC: A47C17/13
Filed: 1969-06-18
Abstract: 1,273,397. Settee-beds. SENG CO. June 18, 1969 [June 26, 1968j, No.30894/69. Addition to 1,168,918. Heading A4J. In a bed-settee having the sections of the bed foldable into a storage space below the seat, the linkage by which the movement of the mostrearward sections and the intermediate sections 532 are co-ordinated, has a last section linkage 565 introduced between a control link 561 and a further pivoted link 567 which is also pivotally restrained at 570. Links 567 and 570 may be formed as an entity thus necessitating a further lost motion linkage between 567 and 561. This allows the intermediate sections to remain vertical until the most-rearward section has completed its move to a position such that a mattress carried thereby has completely cleared the first rail of the storage space. The description is augmented by reference to the parent Specification.
Patent GB-1381406-A (GB)
Title: Method and means for installing a grating panel on a ramp or  bridge deck structure
IPC: E01D19/12
Filed: 1972-07-03
Abstract: 1381406 Grid floors R P MILES and A E SZUCS 3 July 1972 30985/72 Heading E1K [Also in Division B8] In a ramp or bridge deck wherein cross beams 20 carry grating panels 16-22 each grating panel has a plurality of anchor plates 21 secured - e.g. welded - between the grating bars 16 and is held down by blind rivets 30 passed from above through holes drilled in the plates and beams. Fig. 7 illustrates one form of "pull-up" blind rivet. The grating bars 16 may have serrated or smooth top edges and have cross-braces 22. As shown the beams 20 are secured to side members 12, 24 of a wheeled ramp, Fig. 1 (not shown) having a kerb 14, vertical stiffeners 26, and solid non-slip end deck plates (13, 13a).
Patent GB-245270-A (GB)
Title: Improvements in or relating to electric circuit testing and like apparatus
IPC: G01R15/12
Filed: 1924-12-24
Abstract: 245,270. Helliwell, F. O. Dec. 24, 1924. Current detectors; detecting faults; resistances, measuring.-A casing a contains a lamp b and a dry battery (not shown) making contact with studs s, p, and is provided with an elastic strap 11 for attaching to the wrist of the user. Pointed contacts r, m, n are connected as shown and are provided with insulating handles and distinctively coloured bands x, y, z, and preferably with protecting caps 2, 3, 4. Terminals h, i, normally short-circuited by a bar 10, are provided in series with the battery and lamp in order that a pair of telephones or a milliammeter may be connected in circuit when desired. Contacts m, n are employed for testing for continuity or short circuits and for roughly comparing resistances. By employing contacts m, n the battery is cut out and the lamp b lights from an external source, enabling batteries to be tested. A piece of emery cloth is provided on the casing for sharpening the contact points.
Patent GB-166846-A (GB)
Title: Improvements in and connected with ink-ribbon mechanism for typewriting machines
IPC: B41J35/14
Filed: 1920-11-03
Abstract: 166,846. Fairweather, W. C., (Underwood Typewriter Co.). Nov. 3, 1920. Ink-ribbon mechanism.-The vibrator-lever is mounted on the shift frame and engages a slot or guide-way in an operating-lever mounted on the main frame on an axis parallel to the direction of movement of the shift frame, the slot or guideway being arranged parallel to the axis of the operating-lever in order to transmit a uniform movement to the vibrator in all shift positions; the operating-lever may be connected to the universalbar mechanism by a link which can be adjusted to alter the throw of the vibrator for colour selection, or to silence the vibrator for stencilling. As shown, a vibrator-lever 57 is pivoted at 60 to a vertically shiftable rail 61 supporting the carriage 34, and is provided with a pin 56 engaging a vertical channel 55 provided on an horizontal operating-lever 52. Arms 76, 77 on the operating-lever engage a vertical pivot 53 supported by a bridge 80 on the main frame 19. The vibrator-lever is slotted to engage a pin 63 on the vibrator 64. A guide bracket 70 on the rail 61 is formed with fingers 71 engaging ears 72 on the vibrator 64, and a channel 73 engaging the end of the pin 63. A finger 99 on the bracket is arranged in the path of the pin to limit the movement of the vibrator. The universal-bar frame 35 is provided with an arm 50 having a finger 96 pivotally connected to a link 51 which carries a stud 83 engaging a curved slot 95 in the lever 52. The stud is formed with a flange 98 resting on the lever, and a stem which passes through the slot and carries a washer and nut. To permit adjustment, the stud is threaded on the link. The throw of the vibrator can be adjusted to present the black strip 81 or the red strip 82 at the printing point, by setting the stud at the left-hand or righthand end of the slot respectively, or the vibrator can be silenced for stencilling by setting the stud in register with a lost-motion recess 105 in the slot. For these purposes, an adjusting-lever 84, pivoted on a stud 91, is connected by a link 92 to a block 94 on the link 51, the finger-piece 85 of the lever being set with reference to marks. The adjusting-lever is retained in the set position by the resilient engagement of a rib 106 thereon with notches 107, 108, 109, Fig. 3, the notches 107, 109 being formed in adjustable arms 111, 112 secured by screws 113 passing through slots 114, and the notch 108 being formed by the space between the arms. The notches 107, 109 are arranged at a higher level than the notch 108 in order to increase the hold on the lever. Specifications 154,087, 154,807, and 158,417 are referred to.
Patent GB-864975-A (GB)
Title: Improvements in and relating to sheet feeding mechanisms
IPC: B41J13/036
Filed: 1959-09-11
Abstract: 864,975. Typewriters &c. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 11, 1959 [Sept. 12, 1958], No. 31106/59. Class 100(4) Pressure rolls 2, 3 co-operating with a rotatable platen 1 to feed paper are mounted on a member 4 pivotally connected to an arm 7 by a link 8. The arm 7 is supported by parallel links 9, 10, on stationary pivots 11, 12 and urged by a spring 14 to force the rolls 2, 3 against the platen 1. The surface 5 of the member 4 is curved so that it has a point of contact 20 with the arm 7 which is nearer to the roll 2 than the roll 3. Thus the roll 3 exerts less pressure on the platen 1 allowing easy introduction of the paper which however causes the member 4 to rock clockwise moving the point of contact 20 nearer to the roll 3 to increase the pressure it exerts sufficiently to ensure proper feed action. When the paper leaves the roll 3 but remains under the roll 2 the member 4 will rock the other way and thus the pressure is always increased at the roll which is effecting the feed action. In an alternative arrangement the member 4 is provided with two rounded projections which become effective alternately to increase pressure at the effective roll. It is also possible for the arm 7 to be curved and the member 4 straight.
Patent GB-912419-A (GB)
Title: Improvements in or relating to transistor amplifiers
Inventor: GIBBONS PAUL
IPC: H03G1/00
Filed: 1960-09-09
Abstract: 912,419. Transistor amplifying circuits. AVIATION, MINISTER OF. Sept. 12, 1961 [Sept. 9, 1960], No. 31117/60. Class 40 (6). An amplifier comprises a common emitter input stage Q3 feeding two common base stages Q1, Q2. An A.G.C. voltage is derived from the collector of Q2 and is applied to its base, and a feed-back path is provided from the collector of Q1 to the input of Q3. As described, the output from the collector of Q2 is fed to a further amplifier stage Q4, having a transformer TR2 in its collector circuit. The amplifier output is taken from the secondary of TR2, and a centre-tapped tertiary winding is provided having a full-wave rectifier circuit MR1, MR2 from which is derived the A.G.C. voltage applied to the base of Q2. A potentiometer R13 in the age circuit may be used to adjust the output level.
Patent GB-280050-A (GB)
Title: Improvements in or relating to means for keeping credit accounts
IPC: B42F17/30
Filed: 1926-12-08
Abstract: 280,050. Ellis, R. C. Dec. 8, 1926. Book-keeping.-In a credit system of book-keeping each customer is assigned a folder which is filed within a cabinet and consists of a front portion 1 and rear portion 6 connected by an expanding bottom panel 4, 5, the inside face 3 of the front portion being provided with a strap or loop 10 to retain a duplicated statement sheet 11, 13 and carbon sheet 12, and the inside face 7 of the rear portion having an expanding pocket 9 to receive one of the tickets issued from an autographic register at each transaction of the customer. The serial number of each ticket and the amount of the purchase are entered upon the statement sheet. The inside face of the folder is provided with index characters, which may be marked to indicate the amount of credit to be granted to a customer and the intervals at which payments will be made, and instructions for carrying out the filing operations &c. may also be printed thereon. A form printed on the inside face is used in the monthly balance of the account.
Patent GB-1213594-A (GB)
Title: The production of pyrans
Inventor: YEOMANS BERTRAM
IPC: C07D309/32
Filed: 1968-06-29
Abstract: 1,213,594. Pyran derivatives. BP CHEMICALS (U.K.) Ltd. 29 May, 1969 [29 June, 1968], No. 31221/68. Heading C2C. 4-Methylene-2,6,6-trimethyl-dihydro-α-pyran and 2,2,4,6-tetramethyl-α-pyran are produced by heating diacetone alcohol and recovering the pyrans from the reaction mixture.
Patent GB-428085-A (GB)
Title: Improvements relating to conveyors for solid materials
IPC: B65G25/00
Filed: 1933-11-09
Abstract: 428,085. Step-by-step conveyers; bucket elevators. MARSDEN, A., 68, Victoria Street, London. Nov. 9, 1933, No. 31271. [Class 78 (i)] Material such as coal is conveyed along a conduit 2, Fig. 1, by a chain 4 which is reciprocated by a crank mechanism 8 connected by a cable 9 to a piston 10 attached to one of its ends, and by a weight 12, or spring or dashpot mechanism, connected to the other end. The chain has a number of conveying elements secured to it, each of which comprises a tapered central tubular portion from which four tapered blades 5, Fig. 3, extend radially. Material may be delivered to the conduit by a bucket elevator, and in this construction the chain is reciprocated by a flywheel fixed to the shaft of the upper drum of the elevator.
Patent GB-371420-A (GB)
Title: Improvements in and relating to the production of vat dyestuffs
Filed: 1930-10-18
Abstract: 2-Amino-3-fluoroanthraquinone (Specification 365,165) is acetylated, converted into the disulphuric ester of the corresponding 2-acetylamino-3-fluoro-9 : 10-dihydroanthraquinone, by means of a tertiary base and sulphur trioxide, in presence of a metal, and the ester after hydrolysis of the acetyl group, isolated.  The latter product is oxidized in alkaline medium to give the tetrasulphuric ester of 3 : 3<1>-difluorotetrahydrodianthraquinoneazine, which on acidification gives the disulphuric ester of 3 : 3<1>-difluoroanthraquinone - anthrahydroquinone-dihydroazine. The tetrasulphuric ester may be converted on textile fibres or in substance by means of development with an acid oxidizing agent, into the 3 : 3<1>-difluorodianthraquinone-dihydroazine. According to examples (1) 2-amino-3-fluoroanthraquinone is acetylated, treated with pyridine-sulphur trioxide and copper and hydrolysed to give the disulphuric ester of 2-amino-3-fluoro-9 : 10-dihydroanthraquinone; (2) the product is oxidized with sodium hypochlorite, followed by the addition of partly neutralized sodium bisulphite and the product separated with potassium chloride; (3) the product of example (2) is treated with alcoholic potash to give the tetrasulphuric ester of 3 : 3<1>-difluorotetrahydrodianthraquinoneazine, which on acidifying gives the disulphuric ester of 3 : 3<1>-difluoroanthraquinoneanthrahydroquinone-dihydroazine; (4) cotton is padded with the di- or tetrasulphuric esters of the last example and developed according to example (3) of Specification 350,499: when development is carried out in substance, the product is 3 : 3<1>-difluorodianthraquinone dihydroazine.  Specification 334,902, [Class 2 (iii), Dyes &c.], also referred to.
Patent GB-705669-A (GB)
Title: Improvements relating to valve systems for the control of fluid pressure
Inventor: BEST DENIS
IPC: G05D16/10
Filed: 1950-12-27
Abstract: 705,669. Fluid-actuated valves. FERRANTI, Ltd. Jan. 3, 1952 [Dec. 27, 1950], No. 31343/50. Class 135 A valve system in which delivery fluid pressure is controlled by valves in the fluid supply and exhaust, comprises a vessel 11 having an axial supply passage 19 through a piston 13 traversing a cylinder 10 in response to delivery pressure at 18, and which is opened by a supply valve 50 when the piston moves away from the supply side of the valve, and an exhaust valve 51 which closes the exhaust 15 when the piston moves in the same direction, a leaky second piston 31 linked to the first and traversing a second cylinder 35, connected at one end to the supply at 14 and having the pressure therein regulated by a device controlling an orifice 33 at the other end which opens to a low pressure region. The pressure in cylinder 35 is set by adjusting a screw carried, rubber pad 36, a needle valve or the edge of a rotary cam controlling the orifice. Should the delivery pressure decrease below that in cylinder 35, the piston moves to the right seating the exhaust and unseating the supply valve which are connected by the rod 52. On a rise in delivery pressure, the reverse happens. In a modification, a side exhaust port is closed by the piston 13 itself, while the supply valve is a ball carried by the hollow rod connecting the pistons and which is unseated by an adjustably screwed rod carried in the end of the cylinder and projecting into the supply port.
Patent GB-1036565-A (GB)
Title: Improvements in or relating to electric supply arrangements
Inventor: BANKS CECIL HENRY
IPC: H03K3/00
Filed: 1963-08-09
Abstract: 1,036,565. Charging and discharging capacitors. WOLSELEY ENGINEERING Ltd. July 21, 1964 [Aug. 9, 1963], No. 31448/63. Headings H2F and H2H. A current for supplying an electric fence 2 comprises a transistor inverter 7-13 charging through a step-up winding 14 and rectifier 15 a capacitor 16 which periodically discharges through a spark gap 18 of the gas discharge type into another step-up transformer 20, 24 connected to the fence 2.
Patent GB-1263413-A (GB)
Title: A method for producing polarized atoms
IPC: G21K1/16
Filed: 1970-06-30
Abstract: 1,263,413. Particle accelerators. UNITED STATES ATOMIC ENERGY COMMISSION. 30 June, 1970 [1 Aug., 1969], No. 31482/70. Heading H1D. [Also in Division G6] In a method of polarizing a beam of atoms, the beam is directed through a magnetically saturated monocrystalline material in a direction parallel to a lattice channel of the material whereby the atoms of the beam acquire polarized electrons by a charge exchange interaction with the material; the beam may thereafter be passed through a weak magnetic field having the same direction as the field of magnetization of the monocrystalline material and extending a distance along the direction of the beam sufficient to ensure that the transit time for the atoms therethrough is greater than the Larmor precession time of the nuclear magnetic moment, whereby nuclear polarization by hyperfine interaction between the magnetic moments of the nuclei and of the captured polarized electrons is effected. As shown, a beam of nuclear polarized neutral hydrogen atoms is obtained by projecting a beam of deuterons from generator 10 through a 2 microns thick nickel monocrystal 20, via beam-diameter reducing quadruple magnets 14 and 16 and a collimeter 18 provided with successively smaller apertures. Crystal 20 is mounted on a goniometer 21 to permit its accurate adjustment, and is magnetized by a magnetic field perpendicular to the beam produced by a magnet 22; a weak field in the same direction is produced by magnet 24. If desired, the resulting polarized neutral hydrogen atoms may then be converted to polarized positive or negative hydrogen ions by projecting the beam through a lattice channel of a further monocrystalline charge transfer foil. The crystal 20 may be any ferromagnetic material, or a paramagnetic material satisfying a specified magnetic susceptibility condition, e.g. gadolinium, dysprosium, holmium or terbium. For a facecentred cubic crystal, the axial channels (110), (100), (111) or (112) or the planar channels of similar designation, may be employed. Application of the method to protons, tritons, helium and lithium is referred to.
Patent GB-1237317-A (GB)
Title: Improvements in or relating to machines for screwing and unscrewing container caps or stoppers
Inventor: CALVILLO LUIS BELTRAN
IPC: B67B3/064
Filed: 1969-06-23
Abstract: 1,237,317. Stoppering &c. L. B. CALVILLO, and M. G. MARTINEZ. 23 June, 1969 [22 June, 1968; 17 May, 1969], No. 31698/69, Heading B8T. A machine for unscrewing caps from containers arranged in a predetermined manner in a crate comprises a plate 1 which carries extractor heads which are caused to descend on to the container necks by a pneumatic cylinder 6 actuated through a valve 5 by the operation of a stop 4 for locating the crate on a platform 3. Each extractor head contains a centring sleeve 20 which holds the container in position while punches 17 mounted on a rotary shaft 13 perforate the container cap. Air distributers 7 uncover orifices and pass compressed air to a cylinder 9 which pushes a rack 15 and, through the use of pinions 14, causes the shaft 13 to rotate to the left, thus unscrewing the stopper. An annular port 12 is in screw-threaded engagement with a surrounding sleeve (not shown), such that during rotation of the stopper, the shaft 13 rises. When the stopper has been unscrewed, the rack 15 operates a pneumatic cylinder to lower the stop 4, so releasing the crate and also causing the plate 1 and shaft 13 to be returned to their original positions. The stop 4 is then reset. An ejector rod 11 knocks the stoppers into a tray 2 which is removed before re-commencement of the cycle. The machine may also be used for fitting caps to containers by replacing certain elements, e.g. the punches 17 and ejectors 11 by a screwing-in cup which has a suction action for producing the force required for the screwing-in action.
Patent GB-1058843-A (GB)
Title: Improvements relating to fabrics for constructing panels of inflatable building structures
IPC: D03D1/02
Filed: 1964-02-05
Abstract: 1,058,843. Fabric for inflatable articles. AIR INFLATABLE PRODUCTS CORPORATION. Feb. 5, 1964 [Feb. 8, 1963], No. 31740/66. Divided out of 1,058,842. Heading D1K. A fabric for making an inflatable cellular panel consists of two layers which are interwoven along spaced bands 58, the inner layer having sections 60 removed to define tabs 62. Specification 1,058,842 is referred to.