baber/WOPTO huggingface dataset:
Patent GB-357536-A (GB)
Title: Improvements in vat dyestuffs
Filed: 1930-06-18
Abstract: Halogenated N-dihydro-1.2 : 21.11-anthraquinone azines are prepared by treating N-dihydro-1.2 : 21.11-anthraquinone azines substituted in at least one of the 3-positions by bromine, with chlorinating agents in an inert organic solvent under mild temperature conditions so as to produce an intermediate complex addition product of the hydroazine and the chlorinating agent and thereafter decomposing this addition product with the elimination of bromine. Chlorinating agents particularly suitable are sulphuryl chloride, thionyl chloride, and disulphurdichloride, and they should preferably be present in quantities not exceeding about 2-3 mols. per mol. of starting material.  The treatment should be carried out at a temperature not exceeding about 80 DEG  C. and the progress of the reaction may be followed by microscopic examination of the mixture.  The reaction may also be carried out in the presence of iron or an iron compound such as iron chloride.  The treatment of the intermediate products to eliminate bromine may be effected by heating the mixture to higher temperatures; evolution of bromine generally sets in at about 110 DEG C.  Or the product may be hydrolysed, followed by reduction of the halogenated azine product to the hydroazine; thus the boiling mixture may be treated with aqueous caustic alkali, or aniline may be used as the saponifying agent when reduction to the hydroazine product is simultaneous with the hydrolysis.  Part or all of the bromine in the starting products appears to be replaced by chlorine and the products which dye blue shades are fast to bleaching and give a more soluble vat than the starting materials.  Those products containing approximately two atoms of chlorine and only a small amount of bromine are stated to possess the best solubility in the vat. Numerous examples are given of products derived from 3.31-dibromo-N-dihydro-1.2 : 21.11-anthraquinone azine and a 3 - bromo-monochloro- N - dihydro-1.2 : 2.11-anthraquinone azine derived from the former product by the present process.  It is also stated that treatment of the starting materials in an inert solvent at temperatures above 150 DEG  C. results in chlorination without replacement of bromine. Specifications 113,783 and 330,217, [both in Class 2 (iii) Dyes &c.], are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) relates generally to the treatment of the above starting materials under conditions favouring the removal of bromine from the molecule and the introduction of chlorine into the molecule, but this subject-matter does not appear in the Specification as accepted.
Patent GB-534814-A (GB)
Title: Apparatus for projecting or condensing light or other rays
IPC: F21V7/00
Filed: 1939-06-27
Abstract: 534,814. Directive radio systems. TRASK, W. E. J. June 27, 1939, No. 18638. [Class 40 (v)] [Also in Group XI] Apparatus for producing a parallel beam of light or other radiation such as infra-red rays or short wireless waves comprises a parabolic reflector 1 having a source of light 17 or other radiation at its focus 9, a lens 16 with focus at 9, a spherical reflector 18 having its centre at 9 and subtending the same angle at the focal point as the lens and a spherical annular reflector 19 having its centre of curvature at 9. The spherical annular reflector 19 and the lens 16 are carried by a mount 12 supported by struts 11 detachably secured to the rim of the parabolic reflector 1. The outer refracting face of the lens may be ellipsoidal and the inner face of the lens may be stepped. Instead of the reflector 18 being in front of the reflector 1, as shown, it may be positioned behind or formed integral with the reflector 1. Instead of the annular reflector 19 being arranged near the source of night it may be arranged near the periphery of the reflector 1. Alternatively the reflectors 18, 19 may be dispensed with and the lamp bulb 8 may be spherical and silvered internally behind the filament and may be provided with an annular silvered zone in front of the filament. By using ebonite lenses infra-red rays may be transmitted and by using quartz lenses the apparatus may be employed with ultra violet rays. For transmitting short wireless waves having a length of 18 centimetres, more or less, pitch may be used as a refractive agent.
Patent GB-1394577-A (GB)
Title: Combination of a clip and a pair of reglets
IPC: B62D27/02
Filed: 1972-04-21
Abstract: 1394577 Window frames STANDARD PRODUCTS CO 21 April 1972 [23 April 1971] 18654/72 Heading E1J Channel sectioned window frame members 28 having a flat base 34 and parallel side walls 30, 32 are longitudinally interconnected by resilient metal clips 60 having a base 62 and legs 64, 66 which resiliently engage the side walls 30, 32. Preferably, the legs snap over shoulder 44, 46 on the side walls 30, 32. The clips may be provided in a linked chain, Fig. 5, having a groove 94 between adjacent clips permitting them to be either snapped off singly or bent through 90‹ to form a corner connector, Fig. 4. The frame members 28 are laid in channels in the frame-surround and a sealing gasket is retained in the frame 28 by the protrusions 36, 38.
Patent GB-1364937-A (GB)
Title: Conveyors
IPC: B65G17/06
Filed: 1973-04-17
Abstract: 1364937 Endless belt conveyers MATELINE AUTOMATION Ltd 17 April 1973 [22 April 1972] 18787/72 Heading B8A A conveyer comprises flexible belting (not shown) supported by flight bars 1 extending transversely of driven chains 4, 4, and connected at predetermined positions 2, 2 ..., to flexible, non-extensible strips 6, 6, extending longitudinally of the belting and connecting all the bars 1. The effect of the strips 1 is to maintain the synchronism of the belt in relation to operations carried out on loads on the conveyer, regardless of the effect of wear taking place in the chains 4, 4.
Patent GB-873356-A (GB)
Title: Improvements relating to electric insulators
Inventor: COX JOHN EDWARD
IPC: H01B17/12
Filed: 1958-06-12
Abstract: 873,356. Insulators; cable end terminations. ELECTRIC TRANSMISSION Ltd. June 8, 1959 [June 12, 1958], No. 18822/58. Class 36. Insulators or bushings as in Specification 702,608 are modified by providing an interference fit between component members so as to provide the major part of the force exerted between them to resist their separation when they are urged in opposite directions, the yieldable sealing rings providing only a minor part of this force. The invention is also applied to a cable sealing end, as shown, wherein the open-ended insulator 40 is provided with metal end caps 42, each having an interference fit on the member 40 and a yieldable neoprene ring 55 therebetween. Cushioning gaskets 56 are provided, as shown. The lead cable sheath 45 is secured to the lower cap 42 by solder 44, and the cable core 48 is soldered to a copper ferrule 50 which is clamped within a closed copper sleeve 52 constituting an extension of the top end cap 42 to which it is welded at 53. A tapped opening 58 is provided in the lower end cap 42 for entry of a dielectric such as oil.
Patent GB-590696-A (GB)
Title: Improvements in or relating to coal cutters
IPC: E21C27/10
Filed: 1944-10-03
Abstract: 590,696. Coal-cutting machines. MACASKILL, D. J. C., and DONCASTER AMALGAMATED COLLIERIES, Ltd. Oct. 3, 1944, No. 18928. Drawings to Specification. [Class 68 (i)] Relates to coal cutting-machines of the kind provided with cutters for forming an undercut from which extends a vertical cut, and consists in the provision of a shearing cutter arranged to produce a vertically extending cut within the width of the undercut, the mountings for the shearing cutter being fixed in relation to the machine as a whole. Shearing cutters may also be detachably connected to the machine to provide a vertically extending cut at one or both sides of the undercut. The subjectmatter of this Specification is substantially the same as that described in Specification 590,694 but the claims differ. Specification 590,695 also is referred to.
Patent GB-1190142-A (GB)
Title: Process for producing High Grade Petroleum Coke
IPC: C10B55/00
Filed: 1968-04-22
Abstract: 1,190,142. Coking oils. SHOWA DENKO K.K., and KYUSHU OIL CO. Ltd. 22 April, 1968 [22 April, 1967; 6 Sept., 1967], No. 18944/68. Heading C5E. In a process for making premium grade coke by heating black oil, or a mixture of black oil with other petroleum fractions, a diluent hydrocarbon fraction which does not coke is included in the black oil in amounts in the range 4 to 35% by volume of the feedstock, while the black oil is in the range 380‹ to 410‹ C. Black oil is the aromatic-rich residual fraction obtained by pyrolysing naphtha, gas oil, kerosene, or natural gas for producing unsaturated hydrocarbons, natural gas being in this context the C 2 H 6 , C 3 H 8  &c. remaining after removal of CH 4  from wet natural gas. The diluent fraction must have a B.P. of at least 380‹ C. at the operating pressure, and it may be added to the black oil and/or may form part of the feedstock by choice of the operating pressure according to the distillation characteristics of the feedstock. A coking temperature of 500‹ C. is mentioned, and delayed coking may be employed.
Patent GB-763385-A (GB)
Title: Improvements in or relating to rotary regenerative heat transfer apparatus
IPC: F28D19/04
Filed: 1954-06-29
Abstract: 763,385. Regenerative heat-exchangers. SVENSKA ROTOR MASKINER AKTIEBOLAG. June 29, 1954 [June 29, 1953], No. 18984/54. Class 64(1) In a rotary-matrix type regenerative heat-exchanger, a circumferential seal between the rotor end faces and the end plates of a stationary housing surrounding the rotor comprises an annulus of sealing brackets 68 each having an arcuate portion 78 secured to the inner surface of the rotor shell 20 and a flanged portion 76 extending laterally therefrom, an annulus of sealing segments 62 bridging the space between the brackets 68 and the adjacent end plate 36, and a plurality of driving pins 72 fixed in each sealing segment, slidably engaged in opening in a bracket 68 whereby each sealing bracket and its corresponding sealing segment can move circumferentially with the rotor as an integral unit whilst at the same time relative axial movement is permitted between the segment and the bracket. Preferably when the seal is provided at the upper end of the rotor as shown, the sealing segments are urged into contact with the adjacent end plate 36 by springs 82. When used at the lower end of the rotor each segment will be gravity biased into contact with the end plate 36 and the springs 82 may be omitted. Alternatively in this latter arrangement, the sealing segments may be weighted to further increase the sealing effect.
Patent GB-631416-A (GB)
Title: Improvements in multi-circuit electric interrupter switches having variable time periods
IPC: H05B1/02
Filed: 1947-07-16
Abstract: 631,416. Interrupters. TUTTLE & KIFT, Inc. July 16, 1947, No. 18993. Convention date, Jan. 2, 1940. [Class 38(v)] A multiple circuit controller having a separate control for each circuit for supplying current for selectively variable lengths of time to a number of heating elements, comprises four identical switch elements mounted around a motor-driven cam 16 to be successively actuated thereby. Each switch element comprises a contact blade 19a adapted to be moved by the cam 16 away from a co-operating contact blade 30a which is adjustable by a manuallyoperable cam 25a to vary the period of contact from constant engagement to constant disengagement. A second cam 35a carried on the manually-operable shaft 26a actuates a blade 35a carrying a contact 40a adapted to bridge two contacts 41a, 42a, whereby the circuit of the cam-driving motor 14, and the respective heater, are opened when the control knob 28a is in the " off position. Specification 534,395 is referred to.
Patent GB-134377-A (GB)
Title: An Improved Incandescent Gas Burner.
Inventor: CAMPBELL THOMAS
IPC: F23D14/30
Filed: 1918-11-21
Abstract: 134,377. Campbell, T. Nov. 21, 1918. Mantle supports; flamespreaders.-The upper end B of the burner mouth A of an upright incandescent burner is of smaller diameter than the remainder so as to 'form a shoulder C on which the supporting-ring E of a mantle of the inverted type rests. A circular spreader G is supported by a rod F above the open end of the burner mouth.
Patent GB-364069-A (GB)
Title: Improvements in or relating to compositions for plastic moulding
IPC: C08K3/30
Filed: 1930-06-23
Abstract: Sulphocyanides of metals or mixtures thereof are added to moulding compositions comprising urea-aldehyde condensation products (the term "urea" including urea, thiourea, their derivatives and metal compounds and their mixtures, and the term "aldehyde" including aliphatic aldehydes, thio-aldehydes, sulphines, and other sulphur-containing compounds derived from aldehydes, substances yielding aldehydes, unsaturated aldehydes, and mixtures thereof) whereby polymerization in the hot-press is promoted and the mouldings improved.  The sulphocyanide may be added at any stage in the process of working up the condensation product, but is preferably added to the moulding composition when it is in a solid pulverized form.  The amount added may vary according to the character of the moulding composition, but 0,5 to 2 per cent is usually sufficient.  In an example, 0,5 per cent of aluminium sulphocyanide is added to a urea-formaldehyde moulding powder.ALSO:Sulphocyanides of metals or mixtures thereof are added to moulding compositions comprising urea-aldehyde condensation products (the term "urea" including urea, thiourea, their derivatives and metal compounds and their mixtures, and the term "aldehyde" including aliphatic aldehydes, thioaldehydes, sulphines, and other sulphur-containing compounds derived from aldehydes, substances yielding aldehydes, unsaturated aldehydes, and mixtures thereof) whereby polymerization in the hot-press is promoted and the mouldings improved.  The sulphocyanide may be added at any stage in the working up of the condensation product but is preferably added to the moulding composition when it is in a solid, pulverized form.  The amount added varies according to the character of the moulding composition, but 0,5 to 2 per cent is usually sufficient. In an example 0,5 per cent of aluminium sulphocyanide is added to a urea-formaldehyde moulding powder.
Patent GB-200698-A (GB)
Title: Improvements in friction gearing
IPC: F16H15/12
Filed: 1922-07-12
Abstract: 200,698. Taylor, G. E. July 12, 1922. Variable-speed gearing comprises a pair of driving discs a, b thrust apart by an axial spring g into engagement with rollers e, f, which are geared together as by friction wheels h, i. The rollers e, f are moved axially in unison upon their feathered shafts to varv the speed imparted to a driven shaft e<1>. The disc a is secured to shaft c as also is a collar k. The disc b is secured to a feathered sleeve d, which also carries a collar d<1>. When the collars k, d<1> are thrust apart by cam means l acting through thrust bearings k<1>, k<2>, the discs a, b are brought together, and the drive is disconnected. The wheels k, i are kept in engagement by inflated tyres, or solid tyres thrust out by adjustable bolts. A loose bevel gear p having a transmission sprocket p<1> is connected to an opposed gear q by an idler r. Forward and reversed driving are effected by shifting a double clutch o splined on the shaft e<1>. The arrangement upon a vehicle operated by a pedal j for changing speed and a pedal m for disconnecting is shown in Fig. 3.
Patent GB-984524-A (GB)
Title: Process for producing synthetic polyesters
IPC: H01B3/42
Filed: 1961-05-26
Abstract: Linear polyesters are made by heating a solution of (a) a di-acid halide of a dicarboxylic acid with (b) a glycol or a dihydric phenol, at a temperature up to the reflux temperature of the solution until the evolution of hydrogen halide substantially ceases, the solvent used being benzophenone, m-terphenyl, a chlorinated or brominated biphenyl, or a chlorinated or brominated diphenyl oxide.  Many dihydric compounds and dicarboxylic acids are specified. The reaction mixture may also include, as a chain-terminating agent (c) a monohydric phenol (e.g. phenol, a hydrocarbon or hydrocarbonoxy substituted phenol or a di- or trihydric phenol in which all but one hydroxyl group has been esterified by a monocarboxylic acid) or (d) an acid-halide of a monocarboxylic acid, especially an aromatic monocarboxylic acid. At the end of the polyesterification reaction, the polyester may be filtered from the cooled solution possibly after the addition of a non-solvent for the polymer, followed by washing the polyester with the non-solvent. Alternatively, the solvent may be removed by the evaporation, distillation or spray-drying. Examples describe the preparation of polyesters by reacting (1)-(1), (3), (5), (10) and (13) hydroquinone and isophthaloyl chloride; (2)-(11), (12) and (14) hydroquinone, isophthaloyl chloride and terephthaloyl chloride; (4) hydroquinone, 4 : 41-dihydroxybiphenyl and isophthaloyl chloride; (6) hydroquinone and 5-chloroisophthaloyl chloride; (7) hydroquinone, resorcinol, isophthaloyl chloride and terephthaloyl chloride; (8) hydroquinone, o,o1-dihydroxybiphenyl, isophthaloyl chloride and terephthaloyl chloride; (9) hydroquinone, 3:31-biphenyldicarbonyl chloride and isophthaloyl chloride; (15) chlorohydroquinone and isophthaloyl chloride; (16) hydroquinone, bisphenol A and isophthaloyl chloride; (17) tolyhydroquinone and isophthaloyl chloride; (18) phenylhydroquinone, hydroquinone and isophthaloyl chloride; (19) hydroquinone, bromohydroquinone and isophthaloyl chloride; (20) hydroquinone, 2 : 5-ditertiarybutyl hydroquinone and isophthaloyl chloride; (21) 4 : 41-dihydroxybenzophenone hydroquinone isophthaloyl chloride; (22) and (23) resorcinol and terephthaloyl chloride; (24) catechol, hydroquinone and isophthaloyl chloride; (25) 2,2-bis-(4-hydroxycyclohexyl) propane and isophthaloyl chloride; (26) bis-(4-hydroxycyclohexyl) dimethylmethane and sebacyl chloride.
Patent GB-1364331-A (GB)
Title: Continuous flow liquid centrifuge characterized by low pressure drop
IPC: B04B5/04
Filed: 1972-04-26
Abstract: 1364331 Centrifugal separator UNITED STATES ATOMIC ENERGY COMMISSION 26 April 1972 [25 May 1971] 19327/72 Heading B2P A continuous flow liquid centrifuge comprises a vertical rotor 1, a central core 4 within the rotor and defining with its wall a peripheral annular cavity axially segmented into a plurality of sectors 11, axially extended inlet and outlet flow passageways 12 at opposite ends of the rotor, respective inlet and outlet plenums d, Fig. 3, at the inner ends of the passageways 12, and a pluarlity of connecting passages 8, 14 communicating respectively between the plenums d and the sectors 11, the sum of the crosssectional areas of the connecting passages 8, 14, where they communicate with the said plenums, being at least as grat as that of the passageways 12 to avoid reduction of flow area, and the cross-sectional areas of the plenums d being no larger than those of the passageways so as to avoid vortex flow conditions therein, whereby a comparatively low pressure drop occurs through the centrifuge. The sectors 11 are defined by axially extending vanes 9 projecting radially from the core 4. The passages 8 are formed by radial bores through the rotor and the passages 14 are constituted by channels grooved in the conical end surfaces 15 of inserts 16 which are located by pins 17 in cavities 7 in the rotor. Each surface 15 is urged by a spring 19 into contact with the conical surface of a recess 13 in which each passageway 12 terminates within the rotor. Each plenum d is formed at the intersection of the passages 14 at the apex of the corresponding insert 16. In a modification, each passageway 12 is of relatively large diameter and is divided by axially extending septa, vanes or fluted walls to prevent vortex flow formation in the passageway. The septa, &c. are extended into the apex of the corresponding insert 16 and provide equal flow distribution to each of the passages 14.
Patent GB-585483-A (GB)
Title: Improvements in protective covering or jacketing means for machinery and like parts
IPC: B65D59/00
Filed: 1944-10-09
Abstract: 585,483. Knitted fabrics. HERTER, E. J. Oct. 9, 1944, No. 19365. Drawings to Specification. [Class 74 (ii)] [Also in Group XVII] A jacket or covering for protecting precision finished or highly polished machine parts &c. consists of two contiguous knitted layers, the inner layer being closely knitted from soft yarn and the outer layer being more loosely knitted either from a resilient material such as wire or from parallel strands of such resilient material and soft yarn. Each layer may be in the form of a flattened tube.
Patent GB-1394497-A (GB)
Title: Suction cleaners
IPC: A47L5/32
Filed: 1973-04-24
Abstract: 1394497 Suction cleaners A SUTTER AG 24 April 1973 [21 April 1972] 19376/73 Heading A4F In a suction cleaner a suction nozzle 12 containing a motor-driven brush (not shown) is connected by a suction pipe 26 to a valve device for selectively connecting the pipe 26 and a suction pipe 25, coupled via a hose 5 to an off-the-floor cleaning nozzle 7, to a suction unit comprising a filter and a motor-driven fan. The valve device comprises pivoted valve flaps 38, 41 in the pipes 25, 26 actuated by rack and pinion mechanism coupled by a cable or linkage to an operating lever 46 on the cleaner guide arm 10, the flap 38 being opened when the flap 41 is closed and vice versa. When not in use the hose 5 is stored in channels 3, 4 in the cleaner housing 1 inter-connected by a channel in a carrying handle 2. When the valve 38 is opened for use of the nozzle 7 a switch (not shown) is opened to de-energize the motor driving the brush in the nozzle 12.
Patent GB-743025-A (GB)
Title: Improvements in or relating to a process and apparatus for the manufacture of moulded articles mainly for optical uses
IPC: B29C31/00
Filed: 1953-07-13
Abstract: 743,025. Moulding lenses &c. LE MARREC, L. July 13, 1953 [July 11, 1952; June 16, 1953], No. 19380/53: Class 87 (2). In order to prevent shrinkage along the geometrical axis of moulded lenses during their moulding from polymerizable material, pressure is applied to the periphery of the lens during polymerization. In one modification, Fig. 1, pressure is applied to the edges by inflation of a chamber M through nozzle N which is thus made to bear against a flexible collar H, having filling hole I. The lens is moulded in the shape shown, by dies C, D the spacing E, F of which is varied by micrometer gauge G, the system being held fast by locking screws J and K. In another modification, Fig. 4 the edge pressure is applied by a knurled screw S which turns on a screw thread on spindle Q so as to compress elastic packing P by means of member R. The process may be applied to thin lenses by moulding them with thick bevelled edges, Fig. 6 (not shown), which are later trimmed.