baber/WOPTO huggingface dataset:
Patent GB-1134701-A (GB)
Title: Imidazolidine derivatives
Inventor: FORT GODFREY
IPC: C06B43/00
Filed: 1966-02-01
Abstract: 1,134,701. Derivatives of imidazolidinone-2. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 Nov., 1966 [1 Feb., 1966], No. 4499/66. Heading C2C. The invention comprises compounds of the general formula and their preparation by reaction with nitroform of compounds of the above general formula in which the -C(NO 2 ) 3  group is replaced by -OR<SP>4</SP>; R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> each represents hydrogen or an alkyl group. The starting compounds may be prepared from 4,5- dihydroxyimidazolidin - 2 - one or 4,5 - dialkoxyimidazolidin - 2 - one by hydroxymethylation or alkoxymethylation as described in Specification 577,735. The nitration reaction may take place in methanol at 90- 100‹ C. at atmospheric pressure. In examples, 4,5 - dimethoxy - 1 - hydroxymethyl - 3 - (2<SP>1</SP>,2<SP>1</SP>,2<SP>1</SP>  -  trinitroethyl) - imidazolidin - 2 - one is prepared from 4,5-dimethoxy-1,3-di-(hydroxymethyl) - imidazolidin - 2 - one and 4,5 - dimethoxy - 1 - methoxymethyl - 3 - (2<SP>1</SP>,2<SP>1</SP>,2<SP>1</SP>- trinitroethyl) - imidazolidin - 2 - one from 1,3- di - (methoxymethyl) - 4,5 - dimethoxyimidazolidin-2-one. The invention also includes difluoramino derivatives of the above nitro compounds, wherein some or all of the -OR groups are replaced by -NF 2  groups, and their preparation by reaction of the nitro compounds with difluoramine in an inert atmosphere in the presence of concentrated sulphuric acid catalyst, e.g. under difluoramine reflux. In examples the fully difluorinated compound 4,5 - bis - (difluoramino) - 1 - difluoraminomethyl - 3 - (2<SP>1</SP>,2<SP>1</SP>,2<SP>1 </SP> -  trinitroethyl) - imidazolidin-2-one is prepared from the nitro compounds specified above.
Patent GB-214954-A (GB)
Title: Improvements in and relating to automatic relief valves for centrifugal compressors with diffuser regulation
IPC: F04D27/02
Filed: 1924-02-21
Abstract: 214,954. Akt.-Ges. Brown, Boveri, et Cie. April 26, 1923, [Convention date]. Regulating or controlling.-A centrifugal compressor with diffuser regulation has also an automatic relief valve A V, the opening curve of which is made dependent on the diffuser position. The regulating apparatus S subject to the delivery pressures controls the action of a pressure oil relay system upon a piston on the, relief valve spindle. The influence of the pressures upon the apparatus S may be varied by throttling devices H, J; this may be effected by a mechanical connection to the diffusers D' as shown in Fig. 3.
Patent GB-233808-A (GB)
Title: Improvements in electric measuring instruments
IPC: G01R5/14
Filed: 1924-02-22
Abstract: 233,808. Crompton & Co., Ltd., Jones, W. F., and Smith, W. G. Feb. 22, 1924. Vibration-dampers.-Attached to the spindle of an ammeter is an aluminium damper vane moving in a brass air chamber B. Alternatively, a copper cylinder or cup may rotate between the moving iron member G and the poles of the iron ring A, which encircles the conductor M carrying the current to be measured. In a modification, the cylinder or cup may be arranged to rotate in a gap in a separate iron ring, also encircling the conductor A, and provided with an iron core in the interior of the cylinder. The iron ring or rings may be solid, laminated, or of wire. Specification 199,526. [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-490063-A (GB)
Title: Improvements in metal drums and like containers
IPC: B65D51/18
Filed: 1937-02-16
Abstract: 490,063. Closures for metal drums &c. FRANCIS, J. H. E. Feb. 16, 1937, No. 4626. [Classes 21 and 125 (iii)] A metal drum or like container for liquids is provided with a collar or neck 1, Fig. 1, permanently secured at the orifice 2 and formed on its upper edge with a turned over rim 4 which forms a seating and means for attachment of a known press cap closure 6 and with an annular recess 5 within and below the rim 4 which provides means for attachment of a sealing disc 7. The disc 7 sits on the shoulder 5a and its flanged edge 7a is frictionally engaged in the recess 5. Alternatively a dished sealing disc 8, Fig. 3, is used but in each case the contact is such that it is necessary to distort the disc in removal, thus preventing its re-use. Specification 467,858 is referred to.
Patent GB-1235643-A (GB)
Title: Input and output circuit wiring arrangement for two-port circuit element
Inventor: MAULDING KENNETH WILLIAM
IPC: H01P5/10
Filed: 1970-01-30
Abstract: 1,235,643. Amplifiers. MULLARD Ltd. 30 Jan., 1970, No. 4633/70. Heading H3T. In a two-pole network either the input or output connection is arranged unbalanced, comprising a lead 8 arranged between two earthed leads 10, 11 while the other output or input connection is arranged as a balanced pair 4. The arrangement may comprise printed circuit wiring (Fig. 3, not shown).
Patent GB-492589-A (GB)
Title: Method of avoiding the formation of zinc stains on laundry boiled in zinc-lined vessels
IPC: C11D3/02
Filed: 1937-02-17
Abstract: Laundry-washing compositions contain about 3 per cent of sodium thiosulphate, hydrosulphite, or disulphide whereby the formation of stains when using zinc-lined vessels is prevented.  Reference has been directed by the Comptroller to Specification 7550/87, [Class 91].
Patent GB-382170-A (GB)
Title: Change speed gear
IPC: F16H3/08
Filed: 1932-02-17
Abstract: 382,170. Variable speed gearing ; claw clutches. FORSTER, A., 61, Bondlerstrasse, Kilchberg, Z³rich, Switzerland. Feb. 17, 1932, No. 4734. Convention date, Feb. 27, 1931. [Class 80 (ii).] Constant-mesh wheels 3, 4, splined on a driven shaft 6 and loose on a countershaft 5 respectively, are caused to move axially together by making their intermeshing teeth arrow-shaped, either pointed, Fig. 8, or curved. The wheels are moved through the wheel 3 to give direct drive with the wheel 3 clutched to the first driving pinion 1, a second speed with the wheel 4 clutched to a rigid countershaft gear 22, and a neutral intermediate position. The wheel 4 slides freely on a boss of a rigid countershaft wheel 2. Lower speeds and reverse are provided by sliding wheels 23, 24. Positive or friction clutching means may be used. Claw clutches.-The clutching element of the wheel 3 is an internal sleeve 7, end teeth 11 of which engage on one side splines on the shaft 6 and on the other radial internal projections 14 in the wheel 3, the sleeve 7 being retained in the wheel by a press-fitted sleeve 15. The clutch teeth 11 mesh with facial teeth on the pinion 1. The sleeve 15, together with the inner ends of the radial projections 14, and the shaft 6 are ground so as to centre the wheel 3 on the splined shaft 6.
Patent GB-309441-A (GB)
Title: Improvements in or relating to grinding or abrading means
Filed: 1929-02-12
Abstract: 309,441. Artifex Chemische Fabrik Ges. April 10, 1928, [Convention date]. Compositions containing oils.-A grinding composition particularly suitable for rubbing down varnished surfaces, consists of a mixture of caoutchouc substitute grinding powder such as emery, silicon carbide, flintstone, &c., and a liquid which is unaffected by sulphur chloride or sulphur, such as mineral oil, hydrocarbons and their tetrachlorides or other substitution products, or hydrogenated naphthalenes such as tetrahydronaphthalene. The caoutchouc substitute may consist of fatty oil such as rape-seed oil, linseed oils, &c., and sulphur chloride or sulphur. In one example, 110 grs. of sulphur chloride is gradually added to a mixture of 800 grs. of rape-seed oil, 260 grs. of mineral oil and 4200 grs. of emery, the mixture being poured while still liquid into suitable moulds. In use the resulting product is readily friable so that the grinding surface is continually renewed and clogging is avoided.
Patent GB-764162-A (GB)
Title: Improvements in and relating to stacking machines
IPC: B65G57/30
Filed: 1955-02-17
Abstract: 764,162. Stacking pallets. BEACON PRODUCTION EQUIPMENT CORPORATION. Feb. 17, 1955 [Aug. 16, 1954], No. 4826/55. Class 94(1). [Also in Group XXX] The invention relates to apparatus for stacking pallets to facilitate storage and subsequent engagement by a fork truck. The apparatus comprises a roller platform 21 pivoted to a fluid pressure elevator 9 at 18, a feed opening 5 adjacent the bottom position of the platform, spring-loaded dogs 32 which engage the pallet at the top position of the platform and support it, together with the remainder of the stack, when the platform is lowered, and a cage (not shown) which surrounds the stack and is provided with one open side to allow the pallets to be removed from the top of the stack by a fork truck. In the lowest position of the platform, members 27, 29 abut and cause the platform to tilt to facilitate loading. Fluid pressure switches 44, 47, operated respectively by the loaded pallet and a member 49 secured to the elevator, effect reciprocation of the platform. The elevator is guided by telescopic members 19, 20.
Patent GB-1202002-A (GB)
Title: Method and apparatus for manufacturing tumbling media
IPC: B28B3/20
Filed: 1969-01-29
Abstract: 1,202,002. Extrusion pelletizing. NORTON CO. 29 Jan., 1969 [29 Jan., 1968], No. 4845/69. Heading B5A. Pellets are made from a plastic mix by extruding the mix through a die with a plurality of holes extending from the inlet to the outlet and converging towards the outlet, forcing the extruded strands into contact so that they adhere together to form a single strand, cutting the strand into lengths and separating the lengths into their component pellets. The holes in the die are preferably of polygonal section and are arranged so that the emerging strands fit together readily. After leaving the die the strands are passed through a tapering passage which forces them into engagement. As shown, the plastic material 16 is forced through a multihole extrusion die 30 by piston 14. The die has nine triangular holes, arranged in a triangle and decreasing in separation from the inlet 34 to the outlet 36. A compaction ring 40 is fixed adjacent the outlet 36 and has a triangular passage of decreasing cross-section. A rotating cutter blade 66 moves across the outlet 36 on the compaction ring 40 and cuts the extruded multiple strand A into sections of crosssection as shown at LP. The large pellets LP are then vibrated and dried or cured, and break down to the smaller component pellets SP. The pellets preferably contain abrasive and are used as an abradant in tumbling or vibrating devices for the finishing of workpieces.
Patent GB-1356236-A (GB)
Title: Coupling devices
IPC: B65D90/00
Filed: 1972-02-02
Abstract: 1356236 Twist-locks BACKTEMANS PATENTER AB 2 Feb 1972 [12 Feb 1971] 4949/ 72 Heading E2B A manually-operable coupling device for releasably securing a freight container having an elongate opening to another such container or a loading platform comprises a separate unit provided with turnable twist locks 4, 5, extending from opposite sides, each twist-lock having a first position in which it is insertable in a respective one of the openings, the coupling device having a solid, effectively non-compressible, body 1 with a shaft 3 extending therethrough and turnably journalled therein, the shaft 3 being integral with the twist-locks 4, 5, and the solid body being provided with a recess 2 which opens towards the shaft 3, the arrangement being such that the twist-locks may be moved from the first position to an alternative position with respect to the body 1. Preferably a pin 9 or the like extends from shaft 3 outwardly through recess 2 for manual actuation of the twist-locks. The twist locks 4, 5, preferably are mutually angularly displaced, in relation to a common plane extending through the shaft axis, at an angle in the range 10‹ to 80‹, and as shown the angle is 30‹. Preferably guides 6 are integral with the solid body 1. To secure a container to the underside of one which has already been lifted, the coupling device is inverted from the position shown, pin 9 is engaged by a detachable handle 10. and shaft 3 is rotated so as to release pin 9 from spring clip 7 and turn twist lock 5 into alignment with its adjacent guide 6. Twist lock 5 and adjacent guide 6 are then inserted into the aperture in the lifted container, and shaft 3 rotated back again until pin 9 again engages clip 7. The coupling device is thus secured by twist lock 5, in its resumed oblique location, to the lifted container. The container is now lowered on to another container, whereupon twist lock 4 and its (aligned) associated guide 6 may enter the appropriate aperture in the lower container. Shaft 3 is now rotated until pin 9 engages clip 8, in which position both twist locks are oblique but at different angles, and the containers are secured together.
Patent GB-1373434-A (GB)
Title: Device for securing a windscreen wiper arm to a driving shaft
IPC: B60S1/34
Filed: 1972-02-03
Abstract: 1373434 Windscreen wiper shaft mounting SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 3 Feb 1972 [4 Feb 1971] 5017/72 Heading F2U The axis of a shaft 22 on which a windscreen wiper is mounted lies between the pivots 16, 17 in a shaft mounting 12 about which are mounted the wiper 11 and a cap 18 covering the shaft end. The pivot 17 may be either fixed to the cap 18 and rotate in the mounting 12 or be fixed to the mounting and locate in recesses in the cap. The cap 18 may have a tongue 25 or rib engaging in a recess 26 in the mounting 12 to retain the cap in its operating position.
Patent GB-462414-A (GB)
Title: Improved burner for heavy oil
IPC: F23D5/00
Filed: 1936-02-19
Abstract: 462,414. Liquid - fuel burners. PROGRESSA-JURIGOZ SOC. ANON. Feb. 19, 1936, No. 5086. Convention date, Feb. 19,1935. [Class 75 (i)] A liquid-fuel burner comprises a, circular basin 1 having its base formed as an upwardly projecting cone 3 and mounted in a casing 5 connected to an air supply duct 7. Liquid fuel is supplied to the apex of the cone by a pipe 12 and burns with air passing into the basin through orifices 9, 10. These orifices are inclined upwardly and are arranged at an angle to planes containing the axis of the basin so that the air currents impinge on one another and circulate in the same direction around the cone. Scavenging air currents circulating in the same direction are supplied to the bottom of the basin by downwardly inclined orifices 11. Unburnt fuel flows through openings 13 into the casing 6, and is removed by a drain pipe 14.
Patent GB-122088-A (GB)
Title: Improvements in and relating to the Control of Lamp Circuits used on Motor Cycles, Motor Cars, and the like.
IPC: H02J7/14
Filed: 1918-03-22
Abstract: 122,088. Midgley, A. H., and Vandervell & Co., C. A. March 22, 1918. Lighting s y s - tems.-The supply of current to the head or other lamp of a motor-vehicle i s automatically controlled so that, when the vehicle engine stops or reduces speed below a certain limit, the current flowing through the lamp is reduced and the light dimmed. The automatic cut-in switch c connecting the generator to the battery or a separate electro-magnetic switch mav be used to control the insertion or short-circuiting of a resistance h in the circuit from the battery b to the lamp. The resistance may be included in the circuit from the dynamo to the lamp. The Provisional Specification states that the lamp may be disconnected at low speeds.
Patent GB-361745-A (GB)
Title: Improvements in machines for moulding plastic substances
IPC: B30B11/20
Filed: 1931-02-18
Abstract: 361,745. Moulding cattle-cake &c. in extrusion and rolling machines. SIZER, A. W., White House, Davenport Avenue, Hessle, Hull. Feb. 18, 1931, No. 5113. [Class 87 (ii).] In moulding-machines for cattle cake &c. comprising co-operating moulding-rolls which are supported by bearings on each side in contradistinction to being overhung, one roll and bearing is mounted so that it can be displaced axially for removal when necessary. In the illustrated form meal from the hopper 1 is delivered by the worm 2 between an apertured ring 4 driven by the shaft 6 and an internal roller 5 driven by the shaft 13. A ring 11 running in the framing 12 forms an additional bearing for the moulding ring 4 and is detachable readily to allow the roller 5 to be removed. To remove the roller 5 the two bearings 16, 23 for the shaft 13 are slidable bodily in guides in the main frame by the manipulation of a screw 24. The invention may be applied to machines having two hollow or solid rollers in external contact and either delivering to their hollow interiors or to the interspace below their contracting points.
Patent GB-820980-A (GB)
Title: Improvements in or relating to couplings
Inventor: BELLINGER RONALD
IPC: F16D1/112
Filed: 1957-02-14
Abstract: 820,980. Lifting devices for handling loads. STRACHAN & HENSHAW Ltd. Nov. 13, 1957 [Feb. 14, 1957], No. 5144/57. Class 78 (4). [Also in Group XXV] A sleeve 4 formed with slots 8 for receiving laterally projecting pins on a member to be lifted, in the manner of a bayonet joint, has mounted on it a second sleeve 28 formed with hooks 30 which can be moved by rotation of the sleeve 28 to lock the pins in the slots 8, and a guide member 12 between the two sleeves positions the member to be lifted so that it cannot contact the sleeve 28; this prevents friction between the member to be lifted and the sleeve 28 from impeding the locking action which may be effected by a fairly weak electromagnetic device. In the construction illustrated the sleeve 28 rotates within the sleeve 4 to an extent limited by the member 12, which comprises three ribs or studs projecting inwardly from the sleeve 4 and formed with bevelled edges 14. The hooks 30 are shaped to prevent accidental retraction when they are supporting a load. The sleeve 4 is secured to the main body 2 of the lifting device by an interrupted flange 6 and is normally held from rotation to disengage the flange by a spring-biased pawl 32. The sleeve 28 may be turned positively in both directions by an electromagnetic member or may be turned in one direction by the electromagnetic member and restored by a spring.
Patent GB-849029-A (GB)
Title: Improvements in and relating to the manufacture of copolymeric products
Inventor: CARPENTER ALBERT STANLEY
IPC: C08F214/08
Filed: 1958-02-18
Abstract: Fibre-forming acetone-soluble copolymers of acrylonitrile and vinylidene chloride are prepared by polymerising a mixture of from 30% to 65% of acrylonitrile and 70% to 35% vinylidene chloride in the presence of a water-soluble polymerisation initiator, both monomers and the initiator being dissolved in a solvent mixture containing (a) water, (b) a water-miscible alcohol and (c) acetone, acetic acid or a mixture of acetone and acetic acid, the solvent mixture containing at least 15% by volume of each of (a), (b) and (c).  Specified alcohols are ethanol (preferred), methanol, propanol, isopropanol, and tertiary butanol.  The preferred activator is a redox catalyst, e.g. ammoninium persulphate/potassium metabisulphite and sodium chlorate/potassium. metabisulphite although hydrogen peroxide, ammonium persulphate t-butylhydroperoxide and sodium perborate may also be used; metal compounds, e.g. cupric acetate or a solvent salt should also be present in the redox system. Specifications 569,182 and 643,198 are referred to.
Patent GB-1488255-A (GB)
Title: Yarn-texturising process
IPC: D02G1/16
Filed: 1975-02-27
Abstract: 1488255 Texturing yarns COURTAULDS Ltd 27 Feb 1975 [5 Feb 1974] 05228/74 Headings D1F and D1W In a false-twist texturising process, a multifilament, synthetic e.g. polyamide, polyester, cellulose acetate and triacetate, yarn passes through a conventional twist-tube comprising a cross-pin but without wrapping around the pin: a comparatively low (40 turns per inch) false-twist is imparted to the yarn which, in contacting the pin and the ends of the tube, is opened so that the torque-lively filaments are formed into loops and may also be slightly edge-crimped. The texturising may be immediately preceded by, or effected simultaneously with, drawing. The looped yarn structure is then modified and stabilised by passing the yarn through an interlacing jet the pressure (8-60 p.s.i.g.) of the operating fluid e.g. compressed air, within which is varied according to the type of yarn e.g. with the loops disposed evenly or unevenly in regular or irregular concentrations along the length thereof. As shown, yarn I withdrawn from a package 2 by feed rolls 3 passes through plate heater 4, the false-twister 5, in relaxed state through plate heater 13, thence through nip rolls 14, under tension into wound package 15. The interlacing step may immediately precede wind-up with rolls 14 open, Fig. 2 (not shown). The yarn may comprise at least two components e.g. staple spun yarn or monofilament yarn, which differ in their response to the action of the falsetwister and/or the jet: in the false-twister, the additional component may pass around the cross-pin. Yarn(s) may be texturised in adjacent twisters rotating in similar or opposite directions.
Patent GB-938244-A (GB)
Title: Railway freight car loading structure
IPC: B61D3/18
Filed: 1962-02-12
Abstract: 938,244. Securing loads on wagons; rubber springs. LORD MANUFACTURING CO. Feb. 12, 1962 [March 22, 1961], No. 5234/62. Classes 103(4) and 108(3). Loading on a road vehicle trailer 2 Figs. 1 and 2, supported by its wheels 3 on the floor 1 of a railway freight car, is secured by its corners to the floor, by chains 4, 17, 20, 19 and 18, rubbermetal shear sandwich springs Fig. 4, being interposed in the chains 4 and the chain pairs 17, 20 and 18, 19. Each shock-absorber spring comprises aligned metal plates 6, 6a, Fig. 4, provided with eyes 7, 7a for connection with the associated chains, and elastomeric bodies 8, e.g. of rubber, bonded on each side of the plates 6, 6a, and also to metal plates 9. In the position shown in Fig. 4, the bodies 8 are unstressed but when chains 4 or chain pairs 17, 20 or 18, 19 are tensioned, according to the direction of movement of the trailer relative to the car under longitundinal shocks, the bodies 8 are placed under shear stress. In another form of shockabsorber Figs. 5 and 6, the rubber bodies 11, 11a are initially stressed. As shown bodies 11 bonded on each side of a metal plate 10 are staggered relative to bodies 11a bonded on each side of a metal plate 10a. The bodies 11 are also bonded to metal plates 14 and the bodies 11a bonded to plates 14a and after pre-stressing the bodies the plates 14, 14a aligned on each side of the plates 10, 10a are secured together by cross plates 15.
Patent GB-451048-A (GB)
Title: Improvements in radiants for fires
IPC: F24C15/24
Filed: 1935-02-19
Abstract: 451,048. Radiants for gas and like fires. PARKINSON STOVE CO., Ltd., and WHITESMITH, I. N., Stechford, Birmingham. Feb. 19, 1935, No. 5264. [Class 126] A fireclay radiant for gas and like fires has combined with it metal wire members capable of rapidly heating to incandescence and disposed in the path of the flame. The Figure shows a tubular radiant in which is a tapering helical coil of nickel-crome or other heat-resisting wire d preferably of about 23 gauge. In another form short pieces of wire project from the walls of the radiant towards the centre. In a further form, the usual openwork front is replaced by a network of wires moulded into, or threaded through apertures in, side flanges extending forwardly from the back of the radiant. Specification 24268/08, [Class 126], is referred to.