baber/WOPTO huggingface dataset:
Patent GB-919388-A (GB)
Title: Metallizable azo dyestuffs
Inventor: FREYTAG KARL-HEINZ
IPC: C09B43/10
Filed: 1961-03-13
Abstract: The invention comprises azo dyes of formula <FORM:0919388/IV (b)/1> wherein X is a carboxylic acid or methoxy group and Y is an azo or azoxy group.  The dyes are prepared by reductive linkage of 2 mols of the nitro-disazo dye prepared by coupling the diazo compound of anthranilic acid in acid medium with 2-amino-5-naphthol-7-sulphonic acid and coupling the monoazo compound so obtained in alkaline medium with the diazo compound of 4-nitro-anthranilic acid or 4-nitro-o-anisidine.  The reduction is preferably carried out using glucose in alkaline medium. Alternatively the dye wherein Y is azo and X is methoxy may be prepared by coupling 2 mols of the monoazo dye anthranilic acid --> 2-amino-5-naphthol-7-sulphonic acid with 1 mol of tetrazotised 4:41-diamino-3:31-dimethoxy-azobenzene. The dyes give blue shades on cellulose fibres and the dyeings are preferably aftercoppered.  Examples are given.
Patent GB-1152980-A (GB)
Title: Process for the production of Areno-Oxazinone Compounds
IPC: C07D265/22
Filed: 1968-02-26
Abstract: 1,152,980. Areno-oxazinone compounds. J. R. GEIGY A.G. 26 Feb., 1968 [27 Feb., 1967], No. 9177/68. Heading C2C. Areno-oxazinone compounds of the general formulµ in which A and B each represent the radical of a mono- or poly-nuclear homocyclic aromatic ring system, the bonds of which are in the o-position to each other, which ring systems can optionally contain substituents which remain unchanged under the reaction conditions, are prepared by condensing an o-hydroxyaryl carboxylic acid of formula with an o-hydroxyaryl carboxylic acid amide of formula the condensation being performed at raised temperature in the presence of non-oxidizing inorganic acid halides or organic sulphonic acid halides. The process is preferably carried out in the presence of a non-stoichiometric amount of a tertiary nitrogen base or of a tertiary amide of a low fatty acid acting as a reaction accelerator, and in a boiling aprotic solvent.
Patent GB-338469-A (GB)
IPC: C01G37/14
Filed: 1930-03-22
Abstract: 338,469. Mutual Chemical Co. of America, (Assignees of Tarr, O. F.). April 3, 1929, [Convention date]. Alkali chromates; sodium chromate.- In the production of alkali chromates such as sodium chromate by furnacing a mixture of chrome ore, a basic material such as lime, and an alkali carbonate such as soda ash, the amount of soda ash used is insufficient for the complete decomposition of the ore. The residue from the leaching is worked up in one. or more further treatments. enough soda ash being added in the final treatment to extract all the chromium remaining in the ore residue. The amount of lime added is sufficient to prevent fusion and the formation of appreciable amounts of alkali silicate and aluminate. A portion of the residue from the first or last leaching operation may be used as part of the refractory material in the first furnace mixtume.
Patent GB-720560-A (GB)
Title: Clamp for tube scaffolds
IPC: E04G7/14
Filed: 1952-04-10
Abstract: 720,560. Scaffold clamps. BOHME, H. April 10, 1952 [April 12, 1951], No. 9290/52. Class 20 (2). A scaffold clamp comprises main clamp 1 on which is adapted to swivel a clamp 2, screwed on a stud 9 mounted on a swing bolt 10 pivotable on the hinge 11 of the main clamp, so that the clamp 2 is rotatable about two axes at right angles. The clamp 3 is screwed on a stud fixed to the main clamp or alternatively the studs may be on the clamps. All the clamps comprise two hinged parts held together by swing bolts 6, Also fixed on the clamp may be clamps 4. which may be in two parts on each side of the split in the main clamp. Several modifications are shown..
Patent GB-1070210-A (GB)
Title: Improvements in and relating to atomizers in particular for lubricants
IPC: F16N7/34
Filed: 1965-03-04
Abstract: 1,070,210. Spray-producers. HOERBIGER VENTILWERKE A.G. March 4, 1965 [March 11, 1964], No. 9354/65. Heading B2F. A spray device for lubricants comprises a lubricant container 1 having a filling-hole closed by a plug provided with an extension 28, an atomizer head 2 having a through-port 4 for compressed air flow, and a passage 6 connecting the port and the container, said passage being controlled by a valve actuated by the plug extension 28. The valve is a spring-loaded ball, Fig. 5 (not shown) mounted in a housing 15 secured to the bottom of the head 2 by a screw 26. A bore within the screw leads from the passage 6 to within the housing. The passage 6 is located in front of a restrictor 5 in the port 4 in the direction of air flow and if the direction of air flow is reversed the screw 26 is fitted into an alternative air inlet normally closed by a plug 29. The lubricant reaches the drip cowl 3 via an adjustable screw valve operating in the upper end of a pipe 7 having a non-return valve at its lower end.
Patent GB-234065-A (GB)
Title: Improvements relating to the utilisation of solar heat and lost heat from any source
IPC: F03G6/00
Filed: 1925-04-08
Abstract: 234,065. Gailhat, J. May 14, 1924, Convention date]. Void [Published under Sect. 91 of the Act]. Vapour engines.-In an apparatus, for utilizing solar heat or the waste heat from furnaces &c., a liquefied gas is evaporated in a heater 1 at a temperature above the critical temperature of the gas, is then heated to a higher temperature in a superheater 2, and then allowed to expand in an engine 3, the exhaust passing to a condenser 4 which is maintained at a temperature slightly below the critical temperature of the gas. The liquefied gas is returned to the heater by a compressor 5 wherein the heat of compression effects its vaporization.
Patent GB-1221929-A (GB)
Title: Improvements in or relating to the treatmetnt of clay
Inventor: BROCINER RONALD ERIC
IPC: A01N37/42
Filed: 1967-02-28
Abstract: 1,221,929. Treatment of clay. ENGLISH CLAYS LOVERING POCHIN & CO. Ltd. 27 Feb., 1968 [28 Feb., 1967], No. 9574/67. Heading C1A. [Also in Divisions B2 and C4] Montmorillonite is removed from a kaolinitic clay by a process which comprises deflocculating an aqueous suspension of the clay, applying shearing forces to the suspension at a solids content of 40-80% by weight, so that the work done is at least 60 horsepower hours per ton, diluting the resulting suspension to a solids content of 10-20% by weight, and centrifuging. The lighter fraction is montmorillonite-rich. If the clay contains up to 4% montmorillonite, the shearing forces are applied to a suspension at a solids content of not less than 55% by wt. For a clay containing 10% montmorillonite a suspension of not greater than 70% is used.
Patent GB-1503102-A (GB)
Title: Machine for sorting flat objects
IPC: B65G1/137
Filed: 1976-03-10
Abstract: 1503102 Letter &c. sorting; handling sheets SPETSIAL PROEKT - KONSTRUKTOR BJURO MINISTER SVYAZI SSSR 10 March 1976 [10 March 1975 26 Nov 1975] 09588/76 Headings B8A and B8R A postal mail sorting machine comprises a series of magazines 2 at different axial levels in a squirrel cage drum 13, there being a cylindrical cam member 13 concentric within the drum having a system of cam tracks 18, 19, 20 (Fig. 6, in which the cam and tracks are shown in developed layout) which guide carriers 22 to feed letters to the magazines 2. The letters are fed from stacks 7, 8 (Fig. 1), by vacuum separators (9), (10) (Fig. 2, not shown). A zip code is identified by devices 11, 12, which determine, with the aid of a control device not described, the particular magazine to which a given letter is to be conveyed. The letter is fed to one of the carriers 22, each of which is mounted for sliding on an upright 23 (Fig. 7a) of the drum 13. Each carrier 22 has a roller cam follower 28 for guiding the carrier relative to the cam tracks 18, 19, 20, until the correct magazine is reached. The appropriate magazine has a stop 35 for removing the latter from the carrier 22. Gates (21) (Fig. 5, not shown) open automatically to permit the rollers 28 to move (if necessary) from the initial track 19 to one of two sloping tracks 20, and thence to the appropriate horizontal track 18. Since there are two separate inputs (from respective stacks 7, 8), there are two separate parallel sets 16, 17, of tracks 18, 19, 20. A similar arrangement is employed to unload the magazines. Unloading containers 24 (Fig. 9) carry a series of cams (25) (Fig. 2, not shown) which cause the container to move radially outward when it reaches a destined magazine and strip the contents of the latter by engaging and displacing a platform (33) forming the base of the magazine. The container is then guided by the cam tracks 18, 20, 19, to a position in which it is stripped of its load by an output conveyer (43). The sorter may also be used for bank notes and other documents.
Patent GB-669760-A (GB)
Title: Improvements in the synthesis of aliphatic carboxylic acids
Inventor: THOMAS EDWARD BOADEN
IPC: C07C51/12
Filed: 1949-04-08
Abstract: Aliphatic carboxylic acids are prepared by maintaining aliphatic hydroxy compounds and carbon monoxide under a pressure of at least 100, preferably 250-350 atmos., and at below 200 DEG , e.g. 130-190 DEG  C., in presence of water and an iodide of nickel, cobalt or iron.  A carbonyl of the metal, and iodine are equivalent to the iodide.  Acetic acid may be produced directly from methanol synthesized from CO and H2 and containing the latter.  Tungsten, vanadium, antimony, and bismuth are additional catalysts.  The water is preferably 15-30 per cent of the weight of iodide, e.g. nickel iodide, used, and may be provided by water of crystallization, e.g. in the hexahydrate.  Some anhydrous iodide, e.g. 5-20 mole per cent of the hydrated iodide, is preferably present to initiate the reaction.  Acetic acid may be included in the initial charge for the synthesis from methanol. The latter may be obtained from CO and H2 using a zinc chromate catalyst at 300-320 DEG  C., and the same pressure as used for the acid production, e.g. 300 atmos.  A ratio of H2:CO of 2:1 may be used to initiate the methanol synthesis, tail gas from the acid synthesis then being fed with make-up gas having a H2 : CO ratio of 1 : 1.  Propionic acid may be synthesized from ethanol and adipic acid from 1,4-butanediol.  In examples, methanol is synthesized from CO+ H2 and the products contacted with NiI2, part anhydrous, with or without acetic acid.  After distilling acetic acid, the residue of NiI2 may be mixed with acetic acid and water, and with methyl iodide and nickel carbonyl obtained as first runnings during distillation of the acetic acid, the mixture being charged to the second stage with the product of the methanol synthesis. Specification 283,989, [Class 2 (iii)], is referred to.
Patent GB-269725-A (GB)
Title: Improvements relating to memorandum appliances
IPC: B42D19/00
Filed: 1926-04-13
Abstract: 269,725. Gledhill, A. H. April 13, 1926. Memorandum appliances; holders or retainers for pencils.-In memorandum appliances of the kind wherein a paper strip is drawn from a roll mounted within a holder, and over a surface which supports it during writing, friction devices being provided to maintain the paper taut and prevent the roll from overrunning, the supporting surface A, Fig. 3, is curved in order to maintain the paper in contact with it. The curved surface A forms the top of an inverted box-like frame provided with a compartment b for the paper roll B. The strip is passed around a wire b<5> or like guiding device, up through a slot a'. and over the surface A, the free end of the strip being gripped beneath a trough-shaped pencil rest C with its end plates pivoted upon the sides a of the casing and drawn forward by springs c, Fig. 2. The guide b<5> is so disposed relatively to the edge a<2> of the slot a' in the curved surface A that a double bend is produced in the strip and imparts a drag thereon. The compartment b is provided with a removable bottom b' rabbetted at one edge to engage a groove in the casing and retained in position by a spring b<3> at the opposite edge.
Patent GB-526905-A (GB)
Title: Improvements in or relating to sparking plugs
IPC: H01T21/02
Filed: 1939-03-28
Abstract: 526,905. Sparking plugs. BRUCK, J. March 28, 1939, No. 9680. [Class 7 (iv)] The central rod 1 is enclosed within a sleeve 2 of higher thermal conductivity, for example, copper, interengagement of the adjoining surfaces being produced by threading or grooving, and pressing.
Patent GB-665261-A (GB)
Title: Improvements in or relating to an apparatus including a pair of relatively movable members adapted to carry forming dies
IPC: F16C29/04
Filed: 1947-04-11
Abstract: 665,261. Blank punching; stamping. CONNER, G. O. April 11, 1947 [Jan. 22, 1944], No. 9696/47. Class 83 (iv) Sub press mechanism.- Presses or die sets for punch presses &c. are aligned by posts on one member engaging sockets on the other member spaced by antifriction means such as rollers. In a press a head 70 reciprocated by eccentrics carries posts 73 engaging sockets 76 on the head 71 with antifriction balls or rollers 78 separating the parts. Reservoirs 80 supply lubricant. In a sub-press mechanism, Fig. 1, with posts 20 guided in sockets 12, ball-bearings arranged spirally or otherwise in a cage 16 are inserted in loaded condition between the posts. A double set of balls with interposed floating sleeve may be used.
Patent GB-776975-A (GB)
Title: A device for cleaning a cigarette-paper web in a cigarette-making machine
IPC: A24C5/47
Filed: 1954-04-02
Abstract: 776,975. Expelling dust generated in industrial processes. MOLINS MACHINE CO., Ltd., and JACKSON, N. W. April 1, 1955 [April 2, 1954], No. 9725/54. Class 8(2) [Also in Group XXIX] In a cigarette-making machine a valve for intermittently discharging a jet of gas, e.g. air, for blowing away short fragments of tobacco from spaced portions of a moving web of cigarette paper comprises, in one embodiment, a rotary disc 1, Fig. 1, driven by a sprocket 3 from the cigarette machine and engaged by a pair of spring loaded elements 6, e.g. of carbon, having air passages 8 which are interconnected with each other by. three equally spaced apertures 11 in the disc 1. In a modification, the valve is of the rotary, cylindrical kind consisting of a member 14, Fig. 3, driven by a sprocket 20 and having an axial passage 15 communicating with the air supply 12 and a radial passage 16 by which the air outlet 18 is periodically connected with the supply. Specifications 651,610 and 709,197 [both in Group VI] are referred to.
Patent GB-223503-A (GB)
Title: Improvements in folding hoods for motor and other vehicles
IPC: B60J7/12
Filed: 1924-04-17
Abstract: 223,503. Calso Hood Co., Ltd., Dixon, T. E., and Bradley, W. H. I. April 17, 1924. Hoods.-In hoods having five or more bows of which two or more intermediate bows are situated between the front or outrigger bow and the main bow in the vicinity of the main standard, the hood framework is provided with a single break only on each side of the hood between the rear of the front bow and the forward end of the cant-rail. The break or pivot N occurs between the front bow F and the cant-rail G which is pivoted to the main standard A carrying the main bow C. The intermediate bows D, E are pivoted to the cant rail G and are interconnected by a link H. The rear extension E<1> is pivoted to the rear bow K. The standard A mav be hollow and house a spring M to assist in raising the hood. Specification 216,781 is referred to.
Patent GB-786091-A (GB)
Title: Improvements in or relating to flexible couplings, dampers or the like
IPC: F16D3/68
Filed: 1955-04-04
Abstract: 786,091. Universal joints. CROSET, L. P. May 1, 1956 [April 4, 1955], No. 9753/55. Class 80(2). In a flexible coupling or damper of the kind, e.g. as described in Specification 641,425, wherein rubber blocks are precompressed in cells formed by blades alternating radially from concentric coupled members, the outer member is formed by at least two parts 11, 12, bolted together at 18 to form a member having a continuous axial length greater than three times the radial depth of the cells. Each part 11, 12 may accommodate two blocks axially, 20, 21 and 22, 23, as shown, or the parts may be of unequal lengths, one accommodating one block, the other two. The inner member 10 is in one piece. The rubber blocks are wedge-shaped circumferentially, and the engaging blades are of constant thickness and have clearance at their free radial ends. The rubber blocks 20 ... 23 have an axial length 1“ to 2 times their radial depth and are compressed initially 5-10 per cent and by the maximum load a further 5-10 per cent, the total deformation not exceeding 20 per cent. Under maximum load the non- loaded blocks still retain slight initial compression. Inspection holes with cover plates 33 may be provided in the end flanges.
Patent GB-1246389-A (GB)
Title: Improved method of and apparatus for measuring radiant intensity
Inventor: SENSICLE ANDREW VIVIAN WOODWAR
IPC: G01K17/04
Filed: 1969-02-24
Abstract: 1, 246,389. Measuring infrared intensity. ASSOCIATED BISCUITS Ltd. Feb. 23, 1970 [Feb.24, 1969], No.9763/69. Heading G1A. The infrared intensity emanating for example, from the wall of an oven is measured by a device comprising three similar thermistors embedded in recesses in a plate so that one only is exposed to the radiation, the three, which because of the mounting are initially at common temperature, being connected in a bridge circuit wherein the exposed one is balanced with the other two by heating the other two to give a null output and measuring the heating current. The bridge may be A. C., and the heating D.C. or vice versa and the arrangement may be in a polished tubular metal enclosure with the exposed cell facing a window in the curved surface.
Patent GB-1090815-A (GB)
Title: Improvements in circuits providing known output voltages or currents
Inventor: BANASIEWICZ HENRYK
IPC: H03B5/14
Filed: 1965-03-08
Abstract: 1,090,815. Oscillators. G. & E. BRADLEY Ltd. Feb. 11, 1966 [March 8, 1965], No. 9764/65. Heading H3F. An oscillator having a constant amplitude voltage or current output at a predetermined frequency (e.g. for calibration purposes) comprises an amplifier 10 with its output connected to the primary winding 11 of a transformer 12, means 14 for stabilizing the amplitude connected in a feedback path of the amplifier, and a circuit 30 resonant at the oscillation frequency, including an inductor 31 and a capacitor 32, connected across a winding of the transformer 12. The inductance of inductor 31 is small compared with that of winding 18, and the capacitance of capacitor 32 is large compared with the distributed capacitance of the transformer, so that the amplifier is loaded by an impedance determined almost completely by inductor 31 and capacitor 32 and is therefore loaded at near unity power factor at the oscillating frequency. Inductor 31 has a high " Q " factor, achieved by use of, for example, a gapped core, to minimize power dissipation therein. As shown, the stabilizing means is a lamp bridge fed from a winding 13 of the transformer. The output is taken from any two of taps 20-24. The resonant circuit may alternatively be connected across a further transformer winding.
Patent GB-607936-A (GB)
Title: Improvements relating to the exhaust system of motor car and other engines
IPC: F01N13/18
Filed: 1947-04-14
Abstract: 607,936. Pipe-joints. BARCLAY, L. J. April 14, 1947, No. 9883. Addition to 546,402, [Group XXVII]. Drawings to Specification. [Class 99 (i)] [Also in Group XXVII] The expansion joint described in the parent Specification, comprising two sleeves welded to the exhaust manifold to form an annulus in which another part of the manifold slides, is modified by welding the sleeves to a detachable member. This member may be screwed or other socket or a part of an exhaust silencer. The joint may be packed with asbestos string.
Patent GB-1055103-A (GB)
Title: A machine for cutting and removing pattern float threads
IPC: D03D31/00
Filed: 1964-03-09
Abstract: 1,055,103. Fabric finishing apparatus. E. GROTZ, [trading as ERICH BROCK, MASCHINENFABRIK ZWEIGNIEDERLASSUNG DER FIRMA DEUTSCH & NEUMANN]. March 9, 1964 [March 14, 1963], No. 9909/64. Heading D1S. In apparatus for cutting through and removing pattern float threads in fabrics, means are provided for feeding the fabric in a tensioned state past a first cross-cutting device for cutting through the float threads and past a second cutting device for removing said threads, the first cross-cutting device being located so that it lies perpendicular to the fabric surface and extends across the width of the fabric and comprising a stationary lower blade and a movable upper blade, the ends of the lower blade being rounded and extending nearer to the fabric than the leading edge of the upper blade; and the second cutting device comprising a cylindrical shearing knife which has helically extending cutting edges and which co-operates with a stationary cutting bed. The machine shown comprises, generally, a frame 1 housing means for conducting a fabric through the machine and float thread cutting and removing means, and an air extractor 2 surmounting the frame 1. Fabric is unwound from roll 5 over a friction roller 6 which keens the fabric taut and thence passes around roller 7 to a cross cutting device 8. 9, 10 which cuts the pattern float threads. The fabric then runs over guide roller 11 to a cutting bed 13, which can be raised or lowered under the control of hydraulic means, where the loose thread ends are removed by a rotating shearing cylinder 3 having spiral blades which co-operate with fixed blade 4. The shearing blades have openings for the passage therethrough of suction air and the slot of the air extractor is so located that the loose ends are erected on the foundation weave shortly before the fabric passes over the cutting bed. After removal of the loose ends the fabric runs over a guide roller 14 to drawing roller 15 and means 17 which rolls up the fabric at 5. Fig. 2, (not shown), shows the cross-cutting device in detail. The ends of bottom blades 8 project beyond the ends of the upper blades 9 and are rounded to prevent catching of the fabric, and an air extractor duct 10 is provided. In another embodiment duct 10 encloses the cutting device and in another embodiment means in the form of a comb with reflexed teeth are provided for holding down the fabric, a reciprocating or endless band blade operating in the trough formed by the teeth.
Patent GB-1490918-A (GB)
Title: Radio direction-finding receiver system
IPC: H01Q3/24
Filed: 1975-03-10
Abstract: 1490918 Direction finder; aerials THOMSON-CSF 10 March 1975 [12 March 1974] 9925/75 Headings H4D and H4A A compact VHF or UHF radio direction finder comprises 2n aerial elements or terminals regularly arranged in a circle of diameter less than half the minimum envisaged received wavelength # m  with opposite pairs of elements being simultaneously connected to a receiver in sequence round the circle to produce a directional lobe sweeping 360 degrees in azimuth. The input to the receiver is the received radio signal, amplitude modulated due to the rotation of the lobe, the modulation having a phase relative to the sweeping of the lobe indicative of the signal direction. If monopole elements are used and, e.g., if n= 3, Fig. 2, the diameter of the circle is # m /4, one element, the "back", e.g. B 4 , is directly connected to the receiver input 2 whilst the "front" element, e.g. B 1 , is connected to the input via #/2 phase delay Z 1 . Directions D 1 , D 2 , D 3  are scanned using the three successive positions of switch 10 with switch 11 in its shown position and D 4 , D 5 , D 6  are scanned using said three successive positions with switch 11 in its other position. Instead of n discrete elements, the aerial may comprise a closed top frusto-conical element 15, Fig. 4a, with n terminals being connected at spaced points on its base rim. The apex angle of the element may be 90 degrees, Fig. 4a, or 120 degrees, Fig. 5 (not shown), or, in an extreme, Fig. 5b (not shown), 180 degrees whereby the element becomes a disc. A diode switching network for the terminals is described, Fig. 6 (not shown), based on the arrangement of Fig. 2.