baber/WOPTO huggingface dataset:
Patent GB-1243714-A (GB)
Title: Dyes
Inventor: BROOKER LESLIE GEORGE SCOTT
IPC: G03G5/06
Filed: 1969-03-21
Abstract: 1,243,714. Methine dyes. EASTMAN KODAK CO. 21 March, 1969 [25 March, 1968]. No. 14902/69. Heading C4P. [Also in Divisions C2 and H1] Methine dyes comprise first and second heterocyclic nuclei joined by a mono-, di- or tri-methin linkage, the first nucleus being bonded by a. carbon atom and comprising a pyrylium or thiapyrylium nucleus (optionally in fused form), and the second nucleus being a 2-aryl-indolyl-3, carbazolyl-3 or imidazo- [4,5-b]-quinoxalinyl-2 nucleus. Preferred dyes are of formulµ (in which one of A and A 1  is of one of the formnlµ and the other is H, alkyl or optionally substituted aryl; R 2-4  are each H, alkyi or optionally substituted aryl, or R 3-4  together form a benzo or naphtho group; R 5-7 are each H, halogen, alkyi or nitro, or R 5  and E 6  or R 6  and R 7  together form a benzo group, Or R 5  and R 1  together form an alkylene group; R 1 , if not combined with R 5  is optionally substituted alkyl ; Rg is optionally substituted aryl; R 9  is alkyl; R 10  and R 11  are each alkenyl or optionally substituted alkyl or aryl; D is O or S; X is an anion; Q is C 2-3  alkylene). Specified first nuclei are pyrylium containing a substituent Q as defined above, naphtho-[1,2-b] pyrylium, 1 - benzopyrylium, 5,6,7,8 - tetrahydrobenzo - [b] - pyrylium, 8,9,10,11 - tetrahydrobenzo-[a]-xanthylium, and the thia analogues of these groups. Specified second nuclei are those shown in the above formulµ, and 3- benz-[g] - indolyl. Specified substituents on the first nucleus include naphthyl, p-tolyl, chlorophenyl, and methoxyphenyl; specified substituents on the second nucleus include allyl and N0 2 . The dyes are prepared by the usual condensation reaction.
Patent GB-779506-A (GB)
Title: Production of sulphuric acid
Inventor: SCHOEFFEL EUGENE WILHELM
IPC: C01B17/775
Filed: 1955-05-24
Abstract: Sulphuric acid is produced directly from sulphur, by heating in an autoclave at a temperature of 100-360 DEG C., preferably 200-360 DEG C., a mixture of water and sulphur, at least 4 times as much water as sulphur being used, in the presence of gaseous oxygen.  The oxygen may be in the form of air.  Two moles of oxygen per mole of sulphur may be employed.  The sulphur treated may be in the form of a colloidal dispersion as produced by the Frasch process.  If salt water is used as the dispersing agent, a mixture of hydrogen chloride and sodium sulphate is produced.  In the example a mixture of 2 gms. of sulphur in 100 ml. of water was heated in an autoclave at 250 DEG C. for 30 mins. in the presence of 15 gm. of oxygen, a pressure of 600 p.s.i.g. being generated.
Patent GB-879370-A (GB)
Title: Improvements in and relating to rosaries, chaplets, prayer beads, necklaces, bracelets, and like articles
IPC: A44C23/00
Filed: 1960-11-10
Abstract: 879,370. Rosaries. MITCHELL, A. G., and MITCHEL & CO., Ltd., ALEX. Nov. 10, 1960. No. 14970/57. Class 18. [Also in Group VII] A rosary comprises moulded bodies of a styrene polymer fuse bonded during moulding to a flexible carrier of polyamide, e.g. nylon. The carrier may be multi-stranded.
Patent GB-1345680-A (GB)
Title: Bromofluoro-ether and its use as an anaesthetic
IPC: C07C43/12
Filed: 1972-03-30
Abstract: 1345680 1-Bromo-2,2,2-trifluoroethyl difluoromethyl ether AIRCO Inc 30 March 1972 [3 May 1971] 15040/72 Heading C2C [Also in Division A5] Novel 1-bromo-2,2,2-trifluoroethyl fluordiomethyl ether, CF 3 CHBr-O-CHF 2 , may be obtained by brominating 2,2,2-trifluoro-ethyl difluoromethyl ether (CF 3 CH 2 -O-CHF 2 ), preferably at temperatures of 425 to 500 C. The product is useful as an inhalant anaesthetic.
Patent GB-461739-A (GB)
Title: Improvements in or relating to centrifugal separators
IPC: B04B1/18
Filed: 1935-05-23
Abstract: 461,739. Centrifugal machines. FAWCETT, H. W. May 23, 1935, No. 15062. [Class 23] After separation, the liquid contents of a centrifugal bowl are drained, through radial conduits extending over the maximum depth of sludge, before the discharge of the sludge. The bowl 1 has peripheral apertures 2 for discharge of the sludge, and these apertures are opened by the movement of a cylinder 11 which surrounds the bowl and has apertures 2<a>, in addition to a recess 26 with apertures 26<a>. Draining conduits 25 with nozzles 25<a> are arranged above the sludge collecting spaces. The liquid to be purified is supplied through the pipe 3, and the sludge collects in the space 8 while the clean liquid passes to the outlet 7. A small fraction of the liquid is discharged through the channel 25 and apertures 26<a> and is returned to the separator bowl. When the sludge deposit reaches the level of the nozzle 25<a>, the liquid issuing from the apertures 26<a> will become dirty. The operator then cuts off the supply of the pipe 3, and when the liquid from the bowl has passed through the channels 25, he operates the valve 22 to supply liquid through the pipe 19 to the upper side of the piston 12. This causes the cylinder 11 to lift until its apertures 2<a> are level with the bowl apertures 2, and the sludge is discharged in a substantially dry condition. The cylinder 11 is restored to its normal condition by the operation of the valve 22 to supply liquid through the pipe 20 to the lower side of the piston 12. In modifications the cylinder 11 may be operated automatically, and the conduits 25 are normally closed or partially closed by the cylinder ; the operation is controlled by a tilting cup mechanism of the kind described in 362,843. A suitable form of tilting cup mechanism is also shown in Figs. 4, 6. A cam drum 80 is mounted freely on a rotating shaft 81 and tends to be rotated from the shaft by a friction washer It is held against rotation by the hook 86 of a pivoted arm 84 carrying the cup 61, engaging the pin 87 on a pawl 83. When the accumulated sludge causes liquid to pass through the pipe 56, the cup 61 becomes filled and tilts the lever 84 thus releasing the pawl 83 which is snapped by the spring 88 into engagement with the ratchet 85. This is rotating with the shaft 81 so that the cam drum 80 is rotated also to control the various operations. The cam follower 60<c> is first operated to cut off the supply of liquid for treatment. After a short interval the follower 58<c> admits liquid, for a short period, to the pipe 19 to raise the cylinder 11 to open the draining conduits 25 and after another interval the follower 58<c> is again operated to admit sufficient liquid to raise the cylinder to open the sludge ports 2. After a further interval a cam follower 59<c> opens the pipe 20 to admit liquid to force the cylinder down and the arm 60<c> is then restored to its initial position.
Patent GB-952823-A (GB)
Title: Improvements in or relating to data recording equipment
IPC: H03M1/00
Filed: 1962-04-18
Abstract: 952,823. Control of A.C. motors. STANDARD TELEPHONES & CABLES Ltd. April 18, 1962 [April 20, 1961], No. 15070/62. Heading H2J. [Also in Division G4] Data which is received at a randomly-varying rate is entered into a buffer store from which it is transferred to a record medium such as a magnetic tape driven by a motor whose speed is adjusted to correspond to the rate at which the data is received. A D.C. signal is derived to represent the amount of data remaining in the buffer store and is applied at TA, Fig. 5, multivibrator MV1 producing pulses at a frequency proportional to the magnitude of the signal and a counter and diode matrix C produce output waveforms b, c, d, e which are supplied in pairs to the windings E1, E2 of a two-phase A.C. motor driving the tape. The resultant waveforms applied to the windings E1, E2 are as shown at f, g of Fig. 6 and are 90 degrees out of phase with each other. As the amount of data in the store is reduced, the motor speed is correspondingly reduced, but the minimum speed is determined by diode DI. If the store becomes empty, a pulse is applied at MA to close gate P, whereupon the counter in C is stopped, and the steady voltages on leads b-e serve to brake the motor. If data, which was previously being received at a high rate, suddenly stops arriving, a signal on lead TF stops MVI and starts MV2, whereupon circuit CS2 operates reversing switch 1NV and the signal applied to winding E2 is reversed in phase to produce an extra braking effect, the initial conditions being resumed as soon as the data input rate and the motor speed are equivalent.
Patent GB-551749-A (GB)
Title: Improvements in or relating to the manufacture of moulded articles of polymerised methyl methacrylate
IPC: C08J9/34
Filed: 1941-11-24
Abstract: 551,749. Polymethyl methacrylate articles. LEADER, S. A. Nov. 24, 1941, No. 15119. [Class 2 (iii)] [Also in Groups V and VI] In making lightweight articles, a solvent for the hollow, preferably spherical, granules of polymerized methyl methacrylate is put into the mould either before, during or after the introduction of the granules into the mould to soften the granules and cause them to adhere. The solvent may be monomeric methyl methacrylate or a liquid polymer of methyl methacrylate or both, or may be chloroform or polystyrene in liquid form. The volatile solvent evaporates during the process, and the polymerizable solvent polymerizes and forms part of the article. Polymerization may be accelerated by heat or catalysts. The article may be given a non-porous exterior (a) by lining the mould with monomeric methyl methacrylate or a liquid polymer thereof or both, or with a paste, dough or solution containing solid non-porous polymerized methyl methacrylate, or (b) by dipping in or spraying with a solvent, e.g. a liquid polymer of methyl methacrylate, after manufacture. The invention may be applied to the manufacture of dentures, e.g. dental obturators. Specification 484,343 is referred to.
Patent GB-474257-A (GB)
Title: Improvements in plate heat-exchangers particularly for treating milk, beer and other liquids
IPC: A23L3/20
Filed: 1936-05-29
Abstract: 474,257. Plate heat - exchangers. MUNDAY, W. O., [Representative of MUNDAY, R. L.]. May 29, 1936, No. 15183. [Class 64 (iii)] A heat-exchanger particularly for pasteurizing milk &c. is formed of a series of hollow plate elements clamped together and each comprising plates 6, 7 of copper or stainless metal separated by rings 8 and formed with corrugations providing a double spiral path 13, 13a extending from the periphery to the centre and back again to the periphery on the outside of each plate. The space within each element is formed with a double spiral path by spiral ribbons 14, 14a of heat-insulating material, and the elements are spaced by metal rings having grooves for packing 12. In use, milk &c. enters the spaces between the elements through ports 16 and passages 18 and thence flows through the diamond - shaped ducts 13 from the periphery to the centre of the elements, returning through the ducts 13a to the periphery and thence through the passages 18a to the outlet ports 16a. The heating or cooling fluid enters the spaces within the elements through ports 17 and passages 19 and flows through the ducts 15 to the centre of the elements returning through the ducts 15a to the periphery and thence through the passages 19a to the outlet ports 17a. When the exchanger is used for heating or cooling by fluid other than that being treated the plates 6, 7 are welded to the rings 8, but when used for regenerative heating the plates are separated f om the rings to facilitate cleaning.
Patent GB-120237-A (GB)
Title: Improved Means for Carrying Gas upon Motor Vehicles.
Inventor: PHILLIPS ARCHIBALD
IPC: B60K15/07
Filed: 1917-10-20
Abstract: 120,237. Phillips, A. Oct. 20, 1917. Addition to 112,115. Drawings to Specification. Fuel containers.-The gaseous fuel container for a motor-vehicle described in the parent Specification, which comprises a metal tank carried on the roof, is provided with an inner flexible bag. Reference has been directed by the Comptroller to Specification 123,777.
Patent GB-219457-A (GB)
Title: Improvements relating to machines for producing tag-labels, or the like
IPC: B31D1/02
Filed: 1923-06-12
Abstract: 219,457. Parmenter, H. H. June 12, 1923. Making babels.-In machines for affixing strengthening-washers to both sides of tag-labels, the two annular punches 1, 2 are reciprocated through rods 12, 13 by two equal cranks 5, 6 which are uniformly and continuously rotated and are mounted on parallel shafts connected by gears 7, 8. A safety cushion spring 39 surrounds the stem of the lower punch. The central punch 20 that slides in the punch 1 to perforate the washers is operated by a lever 25 and a cam 21 The washers for both sides of the labels are cut from a single tape 9 which is fed by a roller 33 actuated by a ratchet-wheel and coacting with pressure rollers 35, 36 connected by a spring 37. The labels may be separated by a cutter of the kind described in Specification 218,813, [Class 31 (i), Cutting and severing machines &c.], operating in conjunction with the machine described.
Patent GB-861840-A (GB)
Title: Improvements in and relating to fuel injection internal combustion engines
IPC: F02M61/14
Filed: 1959-05-04
Abstract: 861,840. Fuel-injection engines. TATRA NARODNI PODNIK. May 4, 1959 [May 6, 1958], No. 15270/59. Class 7(3). In an engine having a fuel injection nozzle situated between two or more inlet and/or exhaust valves, the valve seatings 1 extend into the opening 3 in the cylinder head for the injection nozzle so that the weak wall 4 of the cylinder head between the openings for the valve seatings and the opening for the nozzle is completely interrupted, the remaining edges 5 of the wall being rounded off. The valve seating rings 1 protect the remaining portion of the weak wall 4 from the combustion gases.
Patent GB-704015-A (GB)
Title: Improvements in or relating to aerial systems
Inventor: RUST NOEL MEYER
IPC: H01Q25/00
Filed: 1951-06-27
Abstract: 704,015. Directive radio systems; radar. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 21, 1952 [June 27, 1951], No. 15276/51. Classes 40 (5) and 40 (7). An aerial system having transmission means and a spaced plurality of receiving means includes a lens directing plane polarized transmitted signals and a circular polarizer following the lens, and a receiver lens to direct waves which have passed through the circular polarizer and are plane polarized in a direction at right angles to the transmitted signal to the different receiving means, at least a part of the transmitter lens occupying the same part of the aerial aperture area as at least part of the receiver lens. Preferably the whole of the aperture area is used for both transmission and reception. 'The invention is particularly useful in radar systems in which the elevation and/or azimuth direction of a target is determined by comparing the received echo signals picked up at points a small distance apart. The two lenses may be one behind the other each consisting of a set of plates at right angles to the set constituting the other lens and the circular polarizer may consist of plates of the correct depth set at 45 degrees to the lens plates. In an embodiment having two receiving horns RH1 and RH2 and a central transmitting horn TH the plane polarized waves from horn TH are directed by a lens of vertical plates VLP occupying the whole aperture and then pass through the circular polarizer CP. Received signals circularly polarized in the opposite sense to those transmitted pass through the circular polarizer CP to a receiving lens of horizontal plates HLP in front of the plates VLP. The plates HLP are effectively two lenses one filling the upper half of the aperture 'and directing the received signals passing through it to receiver horn RH1 and the other filling the lower part of the aperture and directing signals passing through it to receiver horn RH2. A tapering funnel structure with two parallel sides and two diverging sides is provided extending from the horns to the lenses and a middle plate MP dividing the beams directed to horns RH1 and RH2 may extend from the lenses part of the way towards horn TH. A similar system having four receiving horns arranged at the corners of a square is described with reference to Figs. 6, and 8 (not shown).
Patent GB-230331-A (GB)
Title: Bridge scorer and totaliser
IPC: A63F1/18
Filed: 1924-06-25
Abstract: 230,331. Cross, H. June 25, 1924. Scoring and marking apparatus.- A device for use in scoring bridge comprises two sets of three dials provided with pointers for marking the tricks, honours, and total scores of the opposing players. The pointers C are each mounted on a spindle B and are held against undesired movement by dome-springs K. The pointer of each honours dial E is connected by a 10-1 reduction gearing B<1>, E<1>, F<1> with the pointer of the corresponding total dial F. The spindles of the pointers of the trick dials G and honours dials E are provided with shaped, upward extensions for engagement with an operating key.
Patent GB-272897-A (GB)
Title: Improved separating switch for high voltage overhead lines
IPC: H01H31/28
Filed: 1927-06-09
Abstract: 272,897. Rheinisch-Westfalische Elektrizitõtswerk Akt.-Ges., (Assignees of Allgemeine Elektricitõts Ges.). June 19, 1926, [Convention date]. High-tension switches. - The insulators e, f carrying the contacts o, p of switches for high voltage overhead lines are differently guided at both ends so as to ensure engagement. As shown, the bar to which the inner ends of the insulators are hinged can be raised and lowered by ropes k, q and the other ends swing round centres c on links d.
Patent GB-674487-A (GB)
Title: Improvements in and relating to magnetic compasses
IPC: G01C17/00
Filed: 1950-06-20
Abstract: 674,487. Magnetic compasses. RONDE, G. F. DE. June 20, 1950 [June 24, 1949], No. 15387/50. Class 97 (ii). A ship's compass having a magnetic system divided into two coaxially mounted parts which are independently rotatable in the same horizontal plane, comprises an outer magnet system consisting of two soft iron bars 12, or two weak bar magnets, supported diametrically opposite one another on the opposite ends of a supporting arm 11a pivotally mounted intermediate its length on an inner casing 7 arranged concentrically within an outer casing 1, an inner magnet system consisting of an annular ring magnet 4 pivotally supported within the casing 7, and a compass card 13 carried by the supporting arm 11a and visible through a glass cover 15 on the upper surface of casing 1. An airtight cylindrical box 3 containing the powerful ring magnet 4 is rotatably mounted on a pin 2 by the compass cap 5. The centre of gravity of box 3 is brought below its point of support by means of a ring 6. The cylindrical casing 7 fixed to the base of casing 1 has an indentation containing a compass cap 9 for the support, by means of pin 10, of an inverted cone-shaped support 11 carrying arm 11a. The casing 7 is filled with a damping liquid, the part 8 of casing 1 forming an expansion wall. The casing 1 is provided with a ring-shaped glass plate 16 for illuminating purposes. In a modification, the whole of casing 1 is filled with liquid, a portion of the side wall thereof forming. an expansion wall and the casing 7 being provided with orifices in the lower part of its sides. A weight is fixed to the base of the casing 1 to avoid undue swinging in the usual gimbal mounting.
Patent GB-688609-A (GB)
Title: Improvements relating to measuring or recording apparatus
Inventor: HAYNES FRANK GRENVILLE
IPC: G01D3/02
Filed: 1950-03-22
Abstract: 688,609. Electric indicating systems. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Dec. 11, 1950 [March 22, 1950], No. 15625/52. Divided out of 688,549. Class 40 (i) [Also in Group XXXVI] In measuring or recording apparatus wherein a voltage representing a variable quantity is balanced against the voltage from a linear potentiometer and the unbalance voltage is appliec to automatically readjust the potentiometer for balance (which may be incorporated in plotting apparatus for two variables of the kind described in Specification 688,549), non-linearity between the unknown and its representative voltage (e.g. between temperature and the output of a thermocouple) is compensated by a further automatic adjustment of the potentiometer in dependence on its instantaneous setting. The potentiometer may comprise a circular slidewire 20 rotatable in engagement with a contact 16, together with a cam 19 whose contour is determined by the nonlinear characteristic to be compensated and which rocks a pivoted spring-loaded arm 18 to move the contact relatively to the slide wire in accordance with the instantaneous setting of the latter. Specification 645,833 also is referred to.
Patent GB-151351-A (GB)
Title: Improvements in plumbers' soldering vices or clamps
IPC: B23K3/08
Filed: 1919-06-21
Abstract: 151,351. Rutter, C. F. June 21, 1919. Cramps.-A soldering vice or cramp comprises two pairs of gripping-jaws pivoted to curved telescopic tubes adapted to be clamped together in an adjusted position by a set-screw. Two jaws b<1> operated to grip by a stud c' and a wing nut d' are pivoted by a bolt e<1> to a curved tube f telescoping within a larger curved tube g to which is pivoted at e a pair of jaws b similar to the jaws b<1>, a pinehing-screw h locking the tubes f, g in the adjusted position.
Patent GB-677225-A (GB)
Title: Improvements in or relating to electro-acoustic transducers
Inventor: ROBERTON JAMES SAMUEL PATERSON
IPC: H04R13/00
Filed: 1947-06-13
Abstract: 677,225. Sound reproducing devices. STANDARD TELEPHONES & CABLES, Ltd. June 11, 1948 [June 13, 1947], No. 15648/47. Addition to 624,566. Class 40 (iv). In an electro-acoustic transducer of the magnetic-acoustic diaphragm type having an auxiliary polepiece on the side of the diaphragm opposite to the main polepiece, as described in the parent Specification, the diaphragm 2 is mounted over, and supported by, the pole of the permanent magnet 1, with which the additional polepiece 6 co-operates. Specification 624,149 is referred to.
Patent GB-918993-A (GB)
Title: Improvements in or relating to air cooling apparatus
IPC: F24F5/00
Filed: 1960-05-04
Abstract: 918,993. Ventilating fans. TAI TUNG WONG. May 4, 1960, No. 15700/60. Class 137. The protective cage of a ventilating fan is formed from metal or plastics piping arranged as shown in Fig. 2A, Fig. 2B or Fig. 3 to have a cooling fluid passing therethrough. The cooling fluid may be either air or water which may be supplied from a refrigerator, an air conditioner or from an ice box. A number of fans may be supplied from each source.