baber/WOPTO huggingface dataset:
Patent GB-864825-A (GB)
Title: Novel quinazoline 3-oxides and a process for the manufacture thereof
Filed: 1959-05-06
Abstract: The invention comprises quinazoline compounds of the formula: <FORM:0864825/IV (b)/1> and acid addition salts thereof wherein R1 is a hydrogen atom or an alkyl or alkenyl group, R2 is a phenyl, nitrophenyl, halophenyl or alkoxyphenyl group, R3 and R4 are optional alkyl or halogen substituents and X1 is a halogen atom (the bonds to the optional groups being denoted by broken lines) and their preparation by treating an o-amino-benzophenone of the formula: <FORM:0864825/IV (b)/2> with hydroxylamine to give a corresponding o-amino-benzophenone oxime acylating with a halide of the formula R1CHX1,COX2 wherein X2 is a halogen atom to give the a -halogeno-acyl-o-amino-benzophenone oxime and dehydrating and cyclising by treatment with mineral acid. Specified products include 2-chloromethyl-4-phenyl-quinazoline-3-oxide and its 6-chloro, 6 : 7-dichloro, 6-bromo, 6-methyl and 6 : 7-dimethyl derivatives and similar 2-(a -bromoethyl) and 4-p-methoxyphenyl and p-chlorophenyl compounds.  2-Amino-4 : 5-dichlorobenzophenone is made by the action of benzoyl chloride on 3:4-dichloro-aniline in the presence of zinc chloride.
Patent GB-920030-A (GB)
Title: Improvements in or relating to building kits
Inventor: BAILEY GEOFFREY
IPC: A63H33/10
Filed: 1960-08-24
Abstract: 920,030. Constructional toys. LINES BROS. Ltd. Aug. 15, 1961 [Aug. 24, 1960], No. 29263/60. Class 132(3). A toy building kit comprises girders of a substantially rigid material, each end of a girder being of square cross-section and having a socket, and junction pieces, each of which consists of a cube of substantially the same external cross-section as the ends of the girders and a spigot on each face of the cube and is made from a relatively easily deformable and resilient plastic material, the spigots and sockets having cross-sections which differ slightly so that they make interference fits. The girders 1 have a socket 4 at each end and are connected by junction pieces 2 having a central cube 7 of the same area of cross-section as the girder and with outwardly-extending tapered spigots 8 which extend from each face and which snapfit in the sockets of the girders and holes 11 in a base 10. The sockets have the inner corners rounded and the inner edge of the mouth may also have more rounded corners. Wall and window panels 14, 15 have projections 16 which fit in slots 12 in the base and a top flange 17 which fits behind a cross girder connecting two upright girders. The top of each panel has slots 18 to receive the projections 16 of the panel above it. Roofing and flooring panels 19 and corner members to mask the exposed junction pieces and girders may be provided.
Patent GB-420768-A (GB)
Title: Improvements in apparatus for classifying or separating solid particles
IPC: B03B5/72
Filed: 1933-10-23
Abstract: 420,768. Gravity-separation apparatus. EWING, S. E. T., and WILLEY, J. L., Anmercosa House, Hollard Street, Johannesburg, South Africa. Oct. 23, 1933, No. 29340. Convention date, Nov. 3, 1932. [Class 46] [See also Group II] Apparatus for classifying or separating solid particles comprises a flexible sheet, rollers contacting with the sheet to produce a succession of transporting and agitating waves therein and means to subject the material in the trough of the waves to fluid in motion so as to remove particles of less density. Fig. 1 shows apparatus for separating sand from pulp. A rubber band 5 forms the sloping bottom of a tank 2 to which the pulp is fed by a conduit 3 and from which liquid and slime flow away over a lip 4. The band 5 is formed into waves by rollers 15 supported in brackets 16 carried by endless chains 17 passing round sprockets 18. The sand settling in the troughs is turned over as it is carried up the floor of the tank, so that slime is removed by the liquid. The sand is further washed by water from spray nozzles 33 and discharged through a shoot 19 and launder 7. The centre of the band is of such a length as to hang loosely in the troughs of the waves which rest on a decking 30, but the length of the edges corresponds to that of the side walls of the tank to which they are clamped by cleats 9. The rollers 15 are rotated by contact with track rollers 21, at such a rate relative to their translational movement that they have rolling contact only with the band 5. Figs. V and VI show a longitudinal and a cross-section of apparatus in which a flexible apron 35 is arranged to form a table. The apron is secured along its centre line to a bar 36 and supported loosely on either side by rollers 39 on chains 40 passing round sprockets 41. The rollers taper inwardly so that the troughs of the waves formed by the band are deeper towards their outer ends. The mixed material is delivered to the table by a feed box 50. Jets of fluid, which may be water when pulp is being treated or air when the material is dry, are delivered from nozzles 52, so as to cause the lighter particles to pass away from the ends of the wave troughs into launders 53, while the heavier particles are carried forward and collected in a launder 54. There may be a separate launder 55 for intermediate particles.
Patent GB-647269-A (GB)
Title: Improvements in or relating to equipment for recording particulars regarding telecommunication connections
Inventor: WRIGHT ESMOND PHILIP GOODWIN
IPC: H04M15/38
Filed: 1947-11-04
Abstract: 647,269. Link mechanism. STANDARD TELEPHONES & CABLES, Ltd. Nov. 4, 1947, No. 29434. [Class 80(iii)] [Also in Group XXXIX] Charges for a telephone call are recorded on a perforated card [see Group XXXIX] through the intermediary of a link mechanism Energization of a magnet 1 pulls a lug 3 into line with a notch to allow a spring to lift a lever 5, whereby an eccentrically mounted pinion 9 is brought into engagement with a driving pinion 14 so as to depress the lever 5 again. If the magnet is slow to release, the lug 3 is restored by a spring latch 7 before the lever 5 can rise again. The lever 5 thus actuates a flexible link 11 each time the magnet 1 energizes.
Patent GB-198616-A (GB)
Title: Improvements in slicing machines
IPC: B26D1/14
Filed: 1922-10-28
Abstract: 198,616. Berkel, W. A. van. Oct. 28, 1922. Cutting slices in succession.-In a disc-knife, reciprocating-table, slicing-machine of the type wherein the knife is driven by a chain and sprockets, the knife 1 is mounted in a bracket A comprising a flat, vertical plate 6 at the front of which is provided a horizontal table 7, or arms for supporting a table, adjoining the usual table 9. Webs 10 enclose the driving-gear and a forwardly-projecting web 11 forms an enclosure for the table 7. A slice-guiding plate is provided.
Patent GB-601354-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/18
Filed: 1945-11-06
Abstract: 601,354. Friction clutches. REAVELL & CO., Ltd., and MAYERS, T. T. Nov. 6, 1945, No. 29510. [Class 80 (ii)] In a friction clutch having shoes on the driven member thrown into and out of contact with the driving member by means of a manually operable actuating member, the latter acts on the shoes through a toggle, the centrifugal force on which maintains the clutch engaged when the shoes are thrown in. As shown applied to a clutch connecting a driving pulley 1 to a driven fly-wheel 3, a pair of arcuate friction shoes 4 mounted on the fly-wheel are expanded against a spring 10 into contact with the pulley drum 6 by a toggle 7 whose central pivot is acted upon by a bellcrank lever 11 also mounted on the flywheel. The remote arm of the lever engages a sliding collar 19 which carries a manually-operated knob 20 prevented from rotating by a weighted guard 22. Centrifugal force on the toggle 7 maintains the clutch engaged upon release of the knob 20 after depressing it to initiate clutch engagement. The shoe pivot pins 5 are eccentrically mounted to provide an adjustment for wear.
Patent GB-140052-A (GB)
Title: Improvements in separators for storage batteries
IPC: H01M2/16
Filed: 1919-11-26
Abstract: 140,052. Tate, A. O. March 8, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Separators for storage batteries are made of woven coco-nut fibre. After the separators have been cut to the required size, the edges may be finished by binding.
Patent GB-1181277-A (GB)
Title: Process for Producing Yarns with Varying Properties
IPC: D06P1/00
Filed: 1967-06-27
Abstract: 1,181,277. Yarns. SOC. RHODIACETA. 27 June, 1967 [28 June, 1966], No. 29530/67. Headings D1F; D1L and D1W. A process for producing a yarn having at least one property varying along its length comprises continuously folding a yarn on itself in the form of a stack of elongated shape and essentially uniform cross-section, subjecting the yarn to a continuous treatmentfor example a heat, swelling, dyeing or dyeresist treatment - which is heterogeneous in relation to the cross-section of the stack so that the yarn produced has in its linear form at least one property - for example colour, shade, or gauge - varying along its length. The treatment may be applied to one side of the stack or to the surface rather than the core. The stack may be formed in a permeable or non-permeable cylinder of a good or bad heat conductor, the yarn being fed into the cylinder by a pair of rolls or by a jet of saturated steam which escapes laterally from the cylinder. The stack may be treated in the cylinder or after leaving the cylinder, and may then be dismantled to recover the yarn or be collected in a receptacle. The yarn may be a mono- or multi-filament or staple fibre yarn of cellulose acetate or triacetate, polyamide, polyester, polyolefin, polyacrylic, polyvinyl, wool, cotton or silk. In particular examples, three or four different dyes are fed to equidistant points around the periphery of the cylinder, or the stack after leaving the cylinder is deposited (optionally with a lateral traverse) on a conveyor belt and is subjected to infra-red radiation to alter the dye receptivity of the yarn in the surface of the stack with respect to the yarn in the core. The yarn receives a crimp in the container which is removed in the case of undrawn yarn by subsequent drawing.
Patent GB-1132127-A (GB)
Title: Spark erosion machines
Inventor: RAYNER WILLIAM HERBERT CHARLES
IPC: B23H7/18
Filed: 1966-07-01
Abstract: 1,132,127. Spark erosion. AGEMASPARK HOLDINGS Ltd. 3 July, 1967 [1 July, 1966], No. 29567/66. Heading B3V. [Also in Division G3] An electrode drive mechanism for a spark erosion machine comprises a drive motor 1 adapted to drive the electrode 7 at least towards the workpiece 9 through a coupling 3 which is disengaged upon short circuit conditions in the spark gap to permit constantly acting means 8 to withdraw the electrode. The motor 1 which may be uni-directional or reversible is controlled by an amplifier 11 responsive to conditions in the gap, and drives the electrode 7 through a reduction gear 2, coupling 3, pinion 4 and rack 5. This is connected to a constant force spring 8 tending to withdraw the electrode. Motor 1 may be controlled to maintain the gap constant. Coupling 3 may be a differential gear, an electrostatic coupling or preferably a magnetic particle coupling energized by a triggering circuit 12 also responsive to conditions in the gap. In normal operating conditions, the coupling 3 slips thereby tending to maintain a constant gap. If a shortcircuit occurs, the coupling rapidly is deenergized to cause instant withdrawal of the electrode by spring 8.
Patent GB-887861-A (GB)
Title: Process for the preparation of 6ª--methyl-16-methylene steroids
Inventor: PETROW VLADIMIR
IPC: C07J7/00
Filed: 1959-08-31
Abstract: Steroids of the formula <FORM:0887861/IV (b)/1> (wherein R is a carboxylic acyl group of not more than 10 carbon atoms) are prepared by reacting 3b -hydroxy- or a 3b -acyloxy-6,16-dimethylpregn-5,16-dien-20-one with an alkaline epoxidizing agent to give 3b  - hydroxy - 16a ,17a  - epoxy - 6,16 - dimethyl - pregn - 5 - en - 20 - one, acylating this, reacting the 3b -acylate with a source of hydrogen ions to form a 3b -acyloxy-17a -hydroxy-6 - methyl - 16 - methylenepregn - 5 - en - 20 - one, acylating this to give the 3b ,17a -diacylate, preferentially hydrolysing this to the 17a -monoacylate, and oxidizing this with isomerization of the 5,6-double bond.  The epoxidation is preferably conducted with alkaline hydrogen peroxide, although the use of alkaline t-butylhydroperoxide is also referred to.  The source of hydrogen ions may be a hydrogen halide, e.g. bromide, in a solvent such as dioxan, acetic acid or benzene (when the product may contain residual halogen which may be removed by treatment with Raney nickel in a solvent) or sulphuric or perchloric acid in a solvent such as dioxan.  The preferential hydrolysis is desirably effected with hot ethanolic or methanolic hydrochloric acid, and the last oxidation may be effected by the Oppenauer method, using an aluminium alkoxide in toluene in the presence of a hydrogen acceptor such as cyclohexanone. Examples are given and a list of suitable acylating acids is provided.  Specifications 850,423, 858,033, 886,619 and 886,620 are referred to.
Patent GB-1334456-A (GB)
Title: Fuel rod with sodium bond
IPC: G21C3/04
Filed: 1971-06-24
Abstract: 1334456 Fuel elements LICENTIA PATENTVERWALTUNGS GmbH 24 June 1971 [29 June 1970] 29746/71 Heading G6C A fuel rod with sodium bond for a sodiumcooled reactor has an opening 5 at its base whereby pressure is equalized between the interior of the rod and the surrounding coolant, and a throttling element 6 between the fuel 2 and an opening 4 at the upper end of the rod, which element 6 presents a high flow resistance to liquid sodium and a low flow resistance to gases. In the gap 3 between the can 1 and fuel 2, there is sodium for the sodium bond. The fuel rod has the openings 4, 5 closed after manufacture by suitable plugs, provisionally until it is fitted in the reactor (in which the direction of coolant flow is that indicated by the arrow). The throttling element 6 comprises three filter members of different porosity with the largest porosity filter member lowermost and the smallest porosity filter member uppermost, and there is a bell 7 connected to this element. The rod base is provided with a non-return valve 8 by means of which sodium can flow under normal operation only from the exterior towards the interior of the rod. There is also a ball-shaped, spring-loaded overpressure valve 9, which becomes operative when the internal pressure in the rod rises excessively and permits sodium to leave the rod. The throttling element 6 ensures that gases may leave the fuel rod comparatively freely whilst loss of sodium from the top of the rod is largely prevented. In the case of leaks, the sodium bond is continuously replaced from the rod base by the coolant. An increase of the volume inside the rod due to boiling sodium and thermal expansion results in an immediate pressure build-up which in turn suppresses the boiling of the sodium. Consequently, in the case of local cooling faults the boiling of the sodium bond prior to the boiling of the coolant is suppressed, making possible the response of the boiling detectors in good time.
Patent GB-693216-A (GB)
Title: Improvements in taps, valves or the like
IPC: F16K3/28
Filed: 1949-11-22
Abstract: 693,216. Valves. GRATRIX, Ltd., S. STANSFIELD, E., and MOORES, C. C. Nov. 6, 1950 [Nov. 22, 1949], No. 29827/49. Class 135. A tap of the kind in which a sealing ring 16 of circular section and mounted, with lateral clearance, in a groove 17 in a plug 8 is movable between a sealing portion 6 and an enlarged portion 5 of a bore to open and close the tap has means whereby the ring does not come into sealing contact with the sealing portion simultaneously around its whole periphery for eliminating " water hammer". In the form shown, a projection 19 is formed at the lower side of the groove 17, whilst in a modification a portion of the step between the ports 5, 6 of the bore is cut away. The plug has a screwed actuating stem 10 rotated by a knob 12 and a sealing ring 14 in a groove 15. Specification 650,665 is referred to in the Provisional Specification.
Patent GB-878856-A (GB)
Title: Improvements in rudders for dinghies and like water craft
Inventor: READMAN LESLIE
IPC: B63H25/38
Filed: 1959-09-01
Abstract: 878,856. Rudders. READY METAL CO. Ltd. May 19, 1960 [Sept. 1, 1959], No. 29838/59. Class 114. A rudder comprises a stock 1 having a pintle 15 supported in a lug 2 and by a web 17 for rotation in a slotted bearing sleeve 19 secured to the stem of the boat through lugs 20 and a blade 12 pivotally supported by a bolt 13 in a channel 14 in the stock. The stock has at its top a sleeve portion 3 to receive the tiller 3a and a channel 4 for a rope 6 by which the rudder blade is pulled up. The blade may be held down by a rope 23 attached thereto at 24.
Patent GB-537038-A (GB)
Title: A new or improved holding device for the suspension of articles such as sheets during pickling
IPC: C23G3/00
Filed: 1939-11-11
Abstract: 537,038. Clips. BIRMINGHAM ELECTRIC FURNACES. Ltd., and LOBLEY, A. G. Nov. 11, 1939, No. 29876. [Class 44] A device for suspending sheet metal in a pickling process, and for like uses, comprises a pair of plate jaw members a, b pivotally connected by a loop c passing through pairs of registering apertures d, and a link g slidable along member a towards the pivot to close the lower jaw ends by wedge action to grip the sheet f. The gripping surfaces of the jaws may be serrated, as shown. The upper end of member b is preferably bent outwards as at b<1>, to facilitate entry of the link. Member a is preferably flat, and longer than member b, its upper end being provided with a hook, aperture, or other suspension means, not shown. A projection e may be formed on one of the jaw members to provide a fulcrum. The device is preferably made of hard unannealed nicked-chromium alloy to retain resilience unimpaired by heat and immersion in a hot salt bath.
Patent GB-1477848-A (GB)
Title: Hall effect switching arrangements
IPC: H01L43/06
Filed: 1974-07-05
Abstract: 1477848 Semi-conductor switching circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 5 July 1974 [9 July 1973] 29937/74 Heading H3T A two state circuit comprises a Hall element 10 and a differential switching circuit having two input transistors T 1 , T 2 , with different surface geometry of the two base-emitter junctions so as to obtain a preferred state within the range of voltages supplied by the Hall element. The outputs A, B from the differential stage may be fed to a Schmidt trigger (not shown) or alternatively to two transistors themselves may be formed as a Schmidt circuit, Fig. 3 (not shown). The two transistors and the Hall device are formed on a single chip by usual integrated circuit techniques, Figs. 4, 5 (not shown) the difference in base-emitter geometry being obtained by forming these junctions (E1, E2) as areas of different length but the same width.
Patent GB-424700-A (GB)
Title: Improvements in electrical heating devices for chicken brooders
IPC: A01K31/20
Filed: 1933-10-30
Abstract: 424,700. Hatching and rearing appliances. MUDD, J., Cloth Hall, Colne, Lancashire. Oct. 30, 1933, No. 30040. [Class 5 (ii)] [See also Groups XI and XXXVI] A chicken brooder or incubator is heated by an electrical resistance element A held beneath the ventilation aperture of the brooder by a transverse beam B formed of two angle irons. A thermostat D is provided regulated by a knob D<1> outside the brooder. A pilot lamp G is connected in parallel with the heating element. This lamp can be replaced by a lamp of higher power to form an emergency heating means.
Patent GB-841831-A (GB)
Title: Complex silicate fillers
Inventor: GRAY JOHN ALAN
IPC: C08K3/34
Filed: 1956-10-03
Abstract: A compound, of average particle size less than 50 millimicrons, and consisting of 60-85%SiO2, 2-30% Al2O3, 1-5% Na2O, and 10-15%H2O (see Group III) is suitable for use as a filler for rubbers.  In an example, the following mixture was vulcanised at 141  DEG C.:- .Rubber (smoked sheet).100 parts by weight .Vulcafor HBS (R.T.M.).1,5 parts by weight .The compound as above.34,2 parts by weight .Stearic acid.3,0 parts by weight .Zinc oxide.5,0 parts by weight .Sulphur.2,5 parts by weight and exhibited the following properties:- .Tensile strength.216 Kg./cm.2 .Elongation at break.691% .Modulus : 300%.48 Kg./cm.2 .Hardness.60 B.S. degrees .Tear strength.125 Kg./cm.2ALSO:A compound referred to as sodium aluminium silicate, containing 60-85% SiO2, 2-30% Al2O3, 1-5% Na2O, and 10-15% H2O, is prepared by adding to a solution of an ammonium salt of a strong acid, especially ammonium chloride, firstly a sodium silicate solution and then a sodium aluminate solution, in which the sodium silicate solution contains 150-270 g.p.l. SiO2, the mole ratio Na2O:SiO2 being 1:2-1:4, and in which the sodium aluminate solution contains 50-200 g.p.l. Al2O3, the mole ratio Na2O:Al2O3 being 1.3:1-3:1, and in which the ammonium salt solution is present in an amount 2% to 10% in excess of that required to neutralise the sodium silicate and aluminate. The mixture is stirred continuously and its temperature maintained above 60 DEG C.  The product has an average particle size less than 50 millimicrons, and is suitable for use as a filler for rubber.  The ammonium chloride solution employed may contain 80-130 gms NH4Cl per litre.  An excess in the final reaction mixture of up to 20% of sodium silicate or sodium aluminate is tolerable.
Patent GB-1357213-A (GB)
Title: Looms
IPC: D03D47/38
Filed: 1971-06-28
Abstract: 1357213 Weft tensioning; shuttleless looms SULZER BROS Ltd 28 June 1971 [30 June 1970] 30136/71 Heading D1E A gripper shuttle loom with weft selection using wefts of different physical characteristics has a weft brake that is released at the start of picking and applied after an interval of time corresponding to the type of weft picked. In Figure 2 a weft selection mechanism moves an arm 29 to close a reed switch 25a to 25f, corresponding to the weft selected for insertion. The reed switches are connected in a circuit having two adjustable cams 32, 33 and 34, 35 which close further switches 37, 39 when a edge 32a passes its switch and opens the switch when a second edge 33a passes its switch. The opening and closing of the switches operates the weft brake and there may be one adjustable cam controlling each weft brake or one cam may control a number of brakes each operating with similar weft. In Figure 7 one adjustable cam, in conjunction with the pattern operated reed switches 25a to 25f, operates in conjunction with an electronic control device 54 which controls the opening and closing of individual weft brakes. The weft brakes 7, Figure 4, comprises a fixed shoe 19 and a spring loaded solenoid operated shoe 18, actuated by the closing and opening of the selected reed switches. In Figure 9 each weft brake comprises the fixed shoe 19 and the movable shoe 17 connected to the piston 56 of a spring loaded dash pot 7a, each dash pot being operated by a linkage and a cam 74 that is movable to operate a selected linkage. The duration of thread braking is adjustable by means of a valve 59, 61 which controls the emission of air from the dash pot and each thread brake is adjusted in dependance of the characteristics of the thread.