baber/WOPTO huggingface dataset:
Patent GB-695566-A (GB)
Title: Improvements in or relating to separation of isomeric mixtures of benzene dicarboxylic acids
IPC: C07C51/493
Filed: 1950-08-09
Abstract: A process for separating terephthalic acid and/or homologues thereof from a mixture of dicarboxylic acids of the benzene series comprises subjecting the mixture to non-catalytic esterification and separating non-esterified terephthalic acid and/or homologues thereof from the mixture.  Temperatures of at least 110 DEG  C., preferably 125-175 DEG  C. are employed, and the alcohol preferably contains more than 4 carbon atoms.  Aliphatic, carbocyclic, and heterocyclic monohydroxy alcohols, e.g. hexanol, n-octanol, 2-ethylhexanol, cyclohexanol, benzyl alcohol, furfuryl alcohol or thienyl alcohol are suitable. Reaction may be in a solvent, e.g. toluene, xylene or a naphtha fraction.  The process may be applied to a mixture of phthalic, isophthalic and terephthalic acids, but preferably the phthalic acid is first removed as its anhydride. During the reaction water is distilled from the mixture.  In examples, terephthalic acid remains unesterified and is removed by filtration when n-octyl alcohol is refluxed with (1-3) a mixture of terephthalic and isophthalic acids in various proportions.  The process is applicable also to the separation of homologues.  In example (4) 2-methyl-1,4-benzene dicarboxylic acid from isophthalic, e.g. 2-ethyl-1,3-benzene dicarboxylic acid (as octyl ester).
Patent GB-818555-A (GB)
Title: A quick-fastener comprising two holding means, and one or more elastic bands
IPC: B62J7/08
Filed: 1957-06-24
Abstract: 818.555. Cord fasteners; straps and bands. WUYTS, J. L. G., WUYTS, L. A., and WUYTS, S. June 24, 1957 [July 10, 1956], No. 19833/57. Classes 44 and 109 In a fastener comprising two holding means for one or more endless elastic bands in which the holding means are adapted to be secured to a cycle or the like, the or each band comprises two flat portions which at a distance from the transitions of one portion into the other gradually decrease in width and gradually increase in thickness towards these transitions and eventually merge into a portion of substantially constant thickness and substantially constant width, the holding means gripping around part of the transitions. As shown, the fastener consists of an endless elastic band 1-4, and a pair of holding members 5, 6 by which the band is attached to a bicycle or luggage carrier thereon. The band comprises two flat portions 1, 2 and thickened end portions 3, 4. The holding members 5, 6 are each. constituted by a housing 9 and cover 10, the latter being recessed to engage on the frame of the bicycle. The housing 9 is provided with a corresponding recess 12 and a curved slot 14 for accommodating the band. In another arrangement, Figs. 6 and 7 (not shown), the holding member is constituted by a pair of plates providing between them a hollow channel for the band. In a further arrangement, Figs. 8 and 9 (not shown), the holding member consists of a housing and a cover, the latter having thickened portions around which the band is passed. Fig. 10 (not shown) discloses an arrangement similar to that of Figs. 6 and 7.
Patent GB-729152-A (GB)
Title: Improvements in or relating to powder dispensing appliances
Inventor: ADAMS ERNEST HIRONS
IPC: B05B11/06
Filed: 1952-08-06
Abstract: 729,152. Powder distributers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 29, 1953 [Aug. 6, 1952], No. 19849/52. Class 18. In a hand powder distributer the pressure medium e.g. air is introduced into the mass of powder, irrespective of changes in the position and attitude of the distributer, by a displaceable conduit 19 forming part of the pressure line nearest to the powder and mounted for rotation about the axis of the container so that it is displaced by gravity to the region where the powder tends by gravity to collect. A tube 10 closed at both ends extends through the cylindrical powder container 2 and is divided by a partition 16 into an injection compartment 17 connected by by a pipe 15 with an air pump 1, and an ejection compartment 18 connected by a pipe 14 with the nozzle 3. One end of the conduit 19 is freely pivoted at the midpoint of the tube 10 and communicates with the injection compartment 17 by holes 21 and the other end is formed into a footpiece 20 with a curved surface closely approaching and conforming to the curvature of the container 2. The injection compartment 18 of the tube 10 communicates with the powder container through holes 22. Whichever way the distributer is held, provided the axis of the container 2 is substantially horizontal the foot-piece. 30 causes the conduit to contact the powder in the lowest part of the container. A filling aperture closed by a cap 9 is provided.
Patent GB-1189378-A (GB)
Title: Floor Polish Composition
IPC: C07F9/141
Filed: 1967-05-01
Abstract: 1,189,378. Tris - (2 - butoxyethyl) phosphite, bis - (2-butoxyethyl) 2-butoxy-ethyl phosphonate. FMC CORP. 1 May, 1967 [13 May, 1966], No. 19906/67. Heading C2C. [Also in Division C3] Tris-(2-butoxyethyl) phosphite is prepared in Example 1 from a mixture of trimethyl phosphite and the butyl ether of diethylene glycol in toluene. Bis - (2 - butozyethyl) 2 - butoxyethyl - phosphonate is prepared in Example 2 from the above phosphite of Example 1 using methyl iodide as catalyst and the above phosphonate at the start of the isomerization.
Patent GB-256982-A (GB)
Title: Improved instrument board for automobile vehicles
IPC: B60K37/02
Filed: 1926-08-12
Abstract: 256,982. Seignol, E. Aug. 13, 1925, [Convention date]. Clocks and recording and measuring instruments, mounting.-All the instruments are mounted in one plate 1 the front of which is covered by a single glass cover plate 18 seated on a U-section ring 20. The plate 18 is held in place by a flanged ring 19. The various instruments are held in place by stirrups 11. The plate 1 is recessed at the top for the reception of a lamp, the rays from which are reflected upon the various dials by the, cover 18.
Patent GB-614181-A (GB)
Title: Improved method of manufacturing magnetic cores
IPC: C04B35/26
Filed: 1946-07-04
Abstract: 614,181. Powdered magnetic cores. PHILIPS LAMPS, Ltd. July 4, 1946, No. 20010. Convention date, June 16, 1942. [Class 38 (ii)] Magnetic cores containing a magnetic ferrite are shaped in an extrusion press with an organic binding material present, and then sintered. The material to be shaped may be a powdered mixture of oxides and hydroxides, the ferrite, being formed during the sintering. The oxides may be ferric, aluminium, chromium, copper or zinc. The binding material, which is expelled during sintering, may be potato flour, wheat flour, tragacanth, or nitrocellulose, in a solvent such as a mixture of butyl acetate, butanol, and ethyl glycol.
Patent GB-1379054-A (GB)
Title: Special effects generator
IPC: H04N5/275
Filed: 1972-05-01
Abstract: 1379054 Television RCA CORPORATION 1 May 1972 [6 May 1971] 20044/72 Heading H4F In the system of Fig. 2, for enabling the display of a small area of video B against a background of video A, by means of switching signals Figs. 3B, 3C, having a "display video A" section 24 and a "display video B" section 25, the latter movable by delay controls 20, 21, adjustment of 20 or 21 so that the area of video B starts to disappear at one side of the picture (switching signal 3C), causes the undesirable reappearance of the disappeared part of the area at the other side of the picture-see Fig. 1a. To overcome this the Specification proposes circuitry, e.g. Fig. 5, for eliminating the undesired part of the switching pulse which overlaps on to the previous or next frame or line. Line sync pulses X are formed by shaper 51 into blanking pulses A, Fig. 4A, and, via monostable circuit 52 into "half blanking pulses" A<SP>1</SP> starting at the beginning of each line. The switching pulses B, Fig. 4B (shown overlapping two adjacent line periods), are produced by a pattern generator 63 under the pulse centre control of a variable delay circuit 53, the delay and position of the switching pulses being varied by control 54. The output of circuit 53 is also fed to a trigger circuit 56 to give a first pair of complementary gating pulse signals D, Fig. 4D, and D, Fig. 4F, synchronous with the switching pulses. The pulses A<SP>1</SP> also produce, from trigger circuit 55, a second pair of complementary gating pulse signals C, Fig. 4C, and C, Fig. 4E, synchronous with the blanking pulses. The switching pulses B are fed to two AND gates 57, 58 with logic combinations of the two gating pulses-i.e. B, C, D to gate 57 and B, C, D, such that gate 57 produces alternate desired switching pulse halves Fig. 4G, and gate 58 produces the interleaving other desired switching pulse halves, Fig. 4A, An OR gate 59 combines the two outputs to give the final modified switching pulses, Fig. 4I.
Patent GB-512185-A (GB)
Title: Improvements in or relating to processes for improving the stability to temperature change of sparking plug insulators
IPC: H01T13/38
Filed: 1938-07-07
Abstract: 512,185. Insulators. BOSCH GES., R., (formerly BOSCH AKT.-GES., R.). July 7, 1938, No. 20090. Convention date, July 9, 1937. [Class 36] [Also in Group XXVII] Sparking plug ceramic insulators are etched superficially by a medium which att acks one or some only of the constituents. Hydrofluoric acid may be applied to material containing more than 30 per cent. corundum. Spinel may also be used. Etching is restricted to the parts most subject to thermal stresses, such as the part x projecting into the combustion chamber, and the lower part of the collar y. Insulators should be unglazed at the places to be treated. According to the Specification as open to inspection under Sect. 91, fused sodium carbonate and caustic potash may be used as etching media. This subject-matter does not appear in the accepted Specification.
Patent GB-681940-A (GB)
Title: Improvements in and relating to aerial arrangements for preventing or reducing interference
IPC: H01Q5/48
Filed: 1950-08-14
Abstract: 681,940. Radio receiving systems. BLAUPUNKT-WERKE GES. Aug. 14, 1950 [Aug. 13, 1949], No. 20090/50. Class 40 (v). In an aerial system connected to a receiver by a screened symmetrical feeder interference picked up by the feeder sheath 11 is balanced out by a bridge circuit in the diagonal arm of which the primary winding 8 of an aerial coupling transformer lies, the four arms of the bridge being the capacities to earth of a main aerial 1 and of one or more auxiliary aerials 2 (or an equivalent condenser) connected to opposite ends of the primary, and the capacities between opposite ends or halves of the primary winding and an earthed electrostatic screen 12 between the transformer windings. Trimmer condensers 9, 10 may shunt the electrostatic screen capacities of the primary. The feeder sheath and transformer screen are connected together but are insulated from an earthed upright tube 6 and screening box enclosing the transformer which also acts as an aerial support. In addition, the main aerial 1 and auxiliary aerials 2 may be so dimensioned and oriented as to balance subinterference from a local interference source, while still producing a net signal input to the transformer, and may have their impedances, measured from the ends of the primary coil, matched over an entire frequency range. The auxiliary aerials may be replaced (Fig. 4, not shown) by a lumped impedance (capacitor) between the primary winding and screening box.
Patent GB-516308-A (GB)
Title: Improvements in or relating to gas or electric light fittings
IPC: F21V21/08
Filed: 1938-07-08
Abstract: 516,308. Supporting globes. RAYBOULD, A. July 8, 1938, No. 20223. [Class 75 (ii)] Globes f are mounted securely by the engagement of their open top edge with an inwardly directed channel member d and by the support of a scroll member g on the lamp bracket.
Patent GB-251496-A (GB)
Title: Rapid gas toaster, griller and warmer
IPC: A47J37/06
Filed: 1925-08-12
Abstract: 251,496. Pepper, C. E., Pepper, J., and Pepper, B. Aug. 12, 1925. Atmospheric gas burners.-The burners A of a gas grilling and toasting stove are of a wedge form with vertical perforated faces, and are constructed from pan-shaped castings to which perforated plates B are secured. The stove shown comprises a double central and two single outer burners connected to three mixing chambers D, in turn connected to a common gas-supply pipe E.
Patent GB-386251-A (GB)
Title: Improvements in mattresses and the like
IPC: A47C23/053
Filed: 1932-07-20
Abstract: 386,251. Spring upholstery. WALES, Ltd. and ADIE, B., Atlas Works, Oozells Street, Birmingham. July 20, 1932, No. 20484. [Class 52 (iv).] A spring assembly has springs with straight free end portions 3c and other diametrically opposed straight portions 3a on their end coils. The straight portions on adjacent springs in the assembly are hingedly connected. The peripheral springs are preferably of the closed end type.
Patent GB-1260703-A (GB)
Title: Felt conditioners
Inventor: SALISBURY JEREMIAH CHARLES
IPC: D21F1/32
Filed: 1969-04-23
Abstract: 1,260,703. Papermaking. J. C. SALISBURY. 22 April, 1970 [23 April, 1969], No. 20641/69. Addition to 1,216,664. Heading D2A. An apparatus for cleaning and conditioning a felt is an improvement or modification of the apparatus of claim 1 of the main patent, at least one of the freely rotatable elements being perforate and enclosing a spray device adapted to be connected to a supply of contaminant-removing fluid. Each spray device may be a fixed tubular spindle extending axially through the element, the longitudinal axis of the spindle coinciding with that of the element, one end of the spindle being blanked off, and the other connected to the supply of fluid, at least one slit being formed in the spindle, the slit extending axially of the spindle but radially directed at those portions of the element which would at any instant contact the felt. The blanked off end may alternatively be open, and allow passage of fluid into the inlet of another spray device. The perforations of the spray devices are preferably formed in the rib or thread.
Patent GB-1307794-A (GB)
Title: Apparatus for the control monitoring and testing of an airborne  electrical system
IPC: H02H7/06
Filed: 1971-04-19
Abstract: 1307794 Protective arrangements MESSERSCHMITT-BOLKOW-BLOHM GmbH 19 April 1971 [20 Feb 1970] 20735/71 Heading H2K Apparatus for the control, monitoring and testing of an air or space vehicle electrical system having two constant-frequency three-phase generators 10, 11 in parallel, comprises a primary fault sensing and control unit 12, 13 for each generator and a central control unit 60 consisting of NAND gates, signal inverters, time delay members, multivibrators and storage elements of micro-miniature construction, means for providing approximately 5 V D.C. for the logic elements and approximately 28 V for the energizing circuits of contactors 41, 54, 85, 86, 101 of the system, and a preflight checkout system in the form of a further logic switching circuit. The arrangement provides protection against over-frequency, over-voltage, undervoltage, over-current, under-excitation, overexcitation and includes differential current protection, an automatic paralleling detector and an inverse parallel condition lockout. Figs. 2, 3 and 4 (not shown) respectively illustrate logic circuits for the primary units, the control unit and the checkout system.
Patent GB-1032789-A (GB)
Title: A covering device for openings, particularly for ship's hatches
Inventor: THOMAS EDMUND
IPC: B63B19/197
Filed: 1964-05-20
Abstract: 1,032,789. Hatch covers. INSTITUT FUR SCHIFFBAUTECHNIK WOLGAST. May 20, 1964, No. 20796/64. Heading B7S. [Also in Division E2] A hatch cover assembly comprises articuated sections 4, 5 having their adjoining edges pivoted to a transverse box member 1 forming part of the closure and movable horizontally over the hatch opening on rollers 10. The rollers 10 ride on tracks 9 in the sides of the hatch coaming (Fig. 6). The outer edge of section 4 is pivoted to a fixed transverse beam 15 and the corresponding edge of section 5 terminates in rollers 14 which in use, ride on tracks 13 parallel with the tracks 9 at each side of the hatch. The hatch covers are lifted and lowered by hydraulic cylinder 19 pivoted to the member 1 and engaging with pistons 18 pivoted to the hatch covers 4, 5. By breaking the connection between the cover section and the fixed beam 15, the sections 4, 5 may be raised independently from the closed position, in which case the beam 1 remains stationary as the hatch covers are raised. Figs. 1, 3, 4 and 5 show the hatch openings fully and partially covered by the covers. When packing is inserted between the hatch covers and the coaming, additional hydraulic jacks 11 (see also Fig. 6) are used to raise the covers sufficiently to allow the insertion or removal of the packing, and to lower the covers on to the packing to effect a seal therebetween.
Patent GB-973787-A (GB)
Title: Pulse code modulation system
Inventor: CATTERMOLE KENNETH WILLIAM
IPC: H04L25/49
Filed: 1963-05-24
Abstract: 973,787. Pulse code modulation systems. STANDARD TELEPHONES & CABLES Ltd. May 24, 1963, No. 20847/63. Heading H4L.  Relates to a pulse code modulation system using a restricted - disparity binary code, i.e. in each code combination the difference between the number of "marks" and the number of " spaces " does not exceed a predetermined value. As shown in Fig. 1, an eight-digit binary code is transmitted in time intervals t 2  to t 9  and a further digit signifying the condition S+ or S - of the subscriber's line is transmitted as a " mark " or " space " in the interval t 1  thus making a code combination of nine digits. The speech sample may be represented by a code combination of 3 marks and 5 spaces (waveform V 3 ) or 4 marks and 4 spaces (waveform V 4 ). If the additional digit is a mark the resultant code combination will be MSMSMSMMS if it is added to V 4  but an extra space digit will give SSMSMSSMS if it is added to V 3 . Thus in this arrangement the maximum possible disparity is 3. In practice this figure should be made as low as possible and in the present invention is reduced to unity by transmitting the 8-digit code in either its normal or complemented form depending on the value of the added ninth digit. Thus when S is represented by a mark the remaining eight digits of V 3  and V 4  are transmitted in their normal form giving MSMSMSSMS and MSMSMSMMS respectively, and when S is represented by a space the remaining eight digits of V 3  and V 4  are transmitted in their complemented forms giving SMSMSMMSM and SMSMSMSSM respectively. At the receiver the condition of the additional digit is noted to determine whether the remaining eight digits have been transmitted in their normal form or complemented. At the transmitter, Fig. 2, signals S and - S are provided by a differential amplifier 1 and the appropriate signal is selected by a gate 4 or 5 at time t 1 . The speech signal is supplied to a binary coder 2 which generates an 8-digit code plus a first digit at time t 1  which is always a mark, a differential amplifier 3 providing coded outputs V, - V of opposite sense. The gates 4, 5 control a flip-flop 6 which in turn controls gates 7, 8 to select the appropriate signal V or - V which is transmitted via OR gate 9. The received signal is supplied to a differential amplifier providing outputs W and - W, Fig. 3 (not shown), which are fed via a pair of gates opened at time t 1  to control a flip-flop accordingly which indicates the signalling condition S or - S and selects one of a further pair of gates to pass the corresponding coded signal W or - W
Patent GB-1189191-A (GB)
Title: Articulated Cover for an Opening
Inventor: HAMILTON WALLACE
IPC: B63B19/203
Filed: 1967-05-04
Abstract: 1,189,191. Hatch covers. PNEUMO DYNAMICS CORP. 4 May, 1967, No. 20875/67. Heading B7S. [Also in Division E2] In a cable operated articulated hatch cover of at least two panels 81, 82 having a cable 119 and pulley system mounted beneath the upper surface of the panels, a free end 123 of the cable extends above the panels and panel 82 is hinged at 90 to the side of the hatch opening. A first direction changing pulley 100 is mounted on the panel 81 remote from the hinge 90 between hinge axis 107 and the centre of gravity of the panel, a second direction changing pulley 106 is mounted on panel 82 and cable 119 is reeved round these two pulleys, the other end of the cable being anchored to the cover. The hatch cover is opened or closed by attaching free end 123 of the cable to the ship's crane. A four panel hatch cover is also shown and described.
Patent GB-1364382-A (GB)
Title: Manufacture of moulded articles of particulate foamed ethylene copolymers
IPC: C08G18/40
Filed: 1972-05-05
Abstract: 1364382 Moulded foamed articles BADISCHE ANILIN- & SODA-FABRIK AG 5 May 1972 [7 May 1971] 20993/72 Heading C3R Moulded foamed articles are prepared by mixing (A) an isocyanate group containing binder mix comprising a polyisocyanate and a polyol with (B) a particulate foamed ethylene copolymer which copolymer contains at least 50% by weight of units derived from ethylene and which contains attached to the polymer chain, substitutents having Zerewitinoff active hydrogen atoms, compressing and curing the reaction mixture under pressure. The copolymers preferably contain -NH 2 , OH and/or -COOH groups and may be ethylene/t-butyl acrylate polymers in which some of the carbot-butoxy groups have been saponified to form carboxyl groups, ethylene/vinyl acetate copolymers in which at least some of the vinyl actate units have been saponified to vinyl alcohol units, ethylene/acrylic acid copolymers, ethylene/hydroxypropyl acrylate copolymers, ethylene / 3 - methyl - 3 - buten - 1 - ol copolymers, ethylene/acrylamine, ethylene/methacrylamide or ethylene/N-t-butylacrylamide copolymers. The particle size of the copolymers is preferably from 3 to 50 mm. The reaction mixtures may be compressed to between 20 and 80% of their original bulk volume and curing may take place at room temperature or elevated temperature.
Patent GB-140509-A (GB)
Title: A new alloy containing iron, nickel, and chromium
IPC: C22C38/40
Filed: 1918-12-17
Abstract: 140,509. Soc. Anon. de Commentry Fourchambault et Decazeviile. Dec. 21, 1917, [Convention date]. Valves are made of an iron alloy containing 25-40 per eent of nickel, 10-15 per cent of chromium, 0.5-1 per cent of manganese, and 0.3 -1 per cent of carbon. One or more other metals may be present as follows : 2-5 per cent of tungsten or 1-3 per cent of molybdenum, 0.2-1 per cent of vanadium, 0.1-0.2 per cent of titanium, and up to 10 per cent of cobalt. Specificatior 140,507, [Class 82 (i), Metals, Extracting &c.], is referred to.
Patent GB-1371486-A (GB)
Title: Circuit for detecting and storing the peak value of a signal
IPC: G01R19/04
Filed: 1973-05-03
Abstract: 1371486 Peak detection NORTHROP CORP 3 May 1973 [15 May 1972] 21082/73 Heading G1U In a peak detector, the upper plate of a capacitor 17, Fig.1, follows an input voltage whilst it rises, but is prevented from following it when it falls by the action of a high gain amplifier 22 and diodes 26, 27. In a modification, Fig.3 (not shown), the input signal can be sampled selectively and the capacitor discharged between samples.