baber/WOPTO huggingface dataset:
Patent GB-507439-A (GB)
Title: Improved manufacture of dimers of olefins
IPC: C07C4/22
Filed: 1937-12-14
Abstract: 507,439. Polymerizing olefines. STANDARD OIL DEVELOPMENT CO. Dec. 14, 1937, No. 34651. Convention date, Jan. 26, [Class 2 (iii)] In the polymerization of olefines with sulphuric acid to produce dimers and trimers, the yield of dimer is increased by adding trimer to the polymerizer feed. The process is particularly applicable to the co-polymerization of n and isobutenes with sulphuric acid of 60-75 per cent at 150-300, preferably 200-225‹ F. and a pressure of 200-600 lb. per sq. in. to maintain the liquid phase. Polymerization of isobutene under similar conditions, generally at 175- 210‹ F., is also referred to. The amount of added trimer,. which can be obtained by fractionating the polymerization product, is 1-10, preferably 2-5 per cent by volume of the liquid feed. The polymerizer 1 is fed with sulphuric acid by pipe 2, and hydrocarbon by pipe 3 having a porous thimble 4. The product leaves by line 5 and is separated in chamber 7 into acid which is recycled, and hydrocarbon material which passes through heater 10 to fractionator 11 from which dimer is withdrawn at 12, and trimer with any heavier polymer at 13. Unpolymerized hydrocarbons leave by line 14 and may be liquefied, part being returned to the fractionator and the remainder to the polymerizer. A desired amount of trimer is recycled to the hydrocarbon feed by line 16. The remainder is led through furnace 19 to cracking chamber 20. The product, if it contains considerable dimer, is returned by line 22 to the fractionator. A branch line 24 serves for feeding all or part of the cracked product to the polymerizer. Cracking of the trimer may be effected at about 450-500‹ F., or at 400-450‹ F. in the presence of catalysts such as Florida earth or activated clay. In an example, a liquefied C4 fraction containing n and isobutones is treated with 60 per cent acid at 225‹ F., 3À8 per cent by volume of trimer is added to the feed.
Patent GB-1094265-A (GB)
Title: Improvements in and relating to propeller blades
IPC: B63H1/12
Filed: 1963-09-03
Abstract: 1,094,265. Screw propellers. F. J. LARD NER. Sept. 3, 1964 [Sept. 3, 1963], No 34687/63. Heading B7V. [Also in Division F1] A propeller has the transition portion from the blade 1 to the boss 2 made convex outwardly as at 3. The trailing face of the boss may be radiused.
Patent GB-1148093-A (GB)
Title: Controlling nuclear reactors
Inventor: RAVEN ANTHONY DAVID
IPC: G21C7/28
Filed: 1965-08-13
Abstract: 1,148,093. Controlling reactors. ENGLISH ELECTRIC CO. Ltd. 12 Aug., 1966 [13 Aug., 1965], No. 34713/65. Heading G6C. A reflector surrounding the core of a reactor includes a plurality of members arranged for relative rotational movement between them so as to vary the size of a void or voids defining a free path for neutrons through the reflector whereby to control the reactivity of the core. In one embodiment, Fig. 2, the reflector 14 comprises a number of vertical graphite bars 20 pivoted on axes 21 to vary the gaps 22. In another embodiment, Fig. 3, apertures 30A in a fixed reflector 30 are closable by sliding shutters 31. In a modification of Fig. 3 (Fig. 4, not shown) the shutters 31 are replaced by a ring rotatable about the axis of the reflector 30 and having apertures which may be aligned with the apertures 30A. According to a further embodiment, Fig. 5, the paths between fixed graphite rods 50 may be obstructed by rods 51 rotatable about eccentric axes 52. The invention is described in relation to the control of a fast reactor (Fig. 1, not shown) cooled by liquid metal and having a fine control by means of a neutron-absorbing fluid in pipes extending through the core.
Patent GB-1154254-A (GB)
Title: Improvements in or relating to Ball Bearings
IPC: F16C19/55
Filed: 1966-08-03
Abstract: 1,154,254. Bearings. ROULEMENTS MINIATURES S.A. 3 Aug., 1966 [13 Aug., 1965], No. 34733/66. Heading F2A. [Also in Division G1] A ball bearing comprises balls between inner intermediate and outer races 1, 3, 2, and means rotatably oscillating the intermediate race 3, the means comprising a shaft 11 rotated about an axis parallel to the bearing axis and having an eccentric pin 14 driving a housing 17 fixed on the median ring. In Fig. 1, a shaft 11 is journalled by bearings 9, 10 in a hole 8 in housing 6, and carries a turbine wheel driven by air from pipe 13 . An eccentric pin 14 on shaft 11 is fixed in the inner ring of ball bearing 15, the inner ring engaging a housing 17 secured to the intermediate race 3. Fig. 2, (not shown), shaft 11 is driven by gears. Alternatively the pin may directly engage housing 17.
Patent GB-1279866-A (GB)
Title: Processes for the preparation of polymers and polymer compositions containing rubbery substances
IPC: C08F291/02
Filed: 1969-07-11
Abstract: 1279866 Graft polymerization process SOC NATIONALE DES PETROLES D'AQUITAINE 11 July 1969 [12 July 1968 23 June 1969] 35109/69 Heading C3G A polymer composition is prepared by prepolymerizing in bulk with agitation a solution of at least one non-vulcanized rubber in at least one vinyl-type monomer until phase inversion occurs, sub-dividing the prepolymerizate into discrete particles by a crushing operation and effecting suspension polymerization of the monomer or monomers contained in said particles while agitating them in an aqueous medium. The prepolymerizate is crushed, in e.g. an apparatus having rotary hammers, preferably in the presence of the suspension medium. In the example the composition is prepared from polybutadiene and styrene.
Patent GB-954877-A (GB)
Title: Improvements in or relating to methods of joining metal component parts
IPC: B23K35/00
Filed: 1962-09-14
Abstract: 954,877. Welding by pressure. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 14, 1962 [Sept. 19, 1961], No. 35167/62. Heading B3R. In joining metal parts, at least one being of copper, a nickel layer between 4 and 10 microns thick is provided at least on the regions of the parts to be joined, the copper part or parts are heated to 500-900‹ C. to diffuse the nickel superficially into the copper, the parts are provided by electroless plating with a phosphorus containing nickel layer and the parts are joined by the local supply of heat. The supply of heat may be by resistance welding. One part may be the copper base of a semi-conductor envelope and the other part a nickel, iron or steel bulb thereof. The nickel layer may be applied by electrodeposition or as a paste.
Patent GB-1503054-A (GB)
Title: Sintered powdered metal article having wear resistant surface
IPC: B22D19/08
Filed: 1976-08-24
Abstract: 1503054 Coating with metals by melting CATERPILLAR TRACTOR CO 24 Aug 1976 [6 Oct 1975] 35220/76 Addition to 1482044 Heading C7F  The method of Claim 1 of the Parent Specification is effected to deposit a metallic wear surface on a sintered metal body. In the example, an engine valve insert 10 formed by sintering a prealloyed powder containing at least 95% Fe, balance Ni, Mo, Cu and C is mounted on a mandrel 20; powdered coating material is applied to bevelled surface 12 by funnel 22 as the mandrel rotates and laser beam 26 melts the coating material to form a coating 14 which penetrates into the voids in the sintered body 10 to a depth of about 0À003 in. The coating material is an alloy of Fe with 10-21% Cr and small amounts of Ni, Si, Mn, C.
Patent GB-508015-A (GB)
Title: Improvements in or relating to electric cables with aluminium jackets
IPC: H01B7/20
Filed: 1937-12-20
Abstract: 508,015. Cables. VEREINIGTE ALUMINIUM-WERKE AKT.-GES., and SIEIMENS-SCHUCKERTWERKE AKT.-GES Dec. 20, 1937, No. 35270. Convention date, Dec. 19, 1936. [Class 36] [Also in Group XXII] Cables are sheathed with aluminium having a degree of purity of at least 99À9 per cent, which, due to this high degree of purity, has a tensile strength of between 3 and 10 kilogrammes per square millimetre and an elongation of between 30 and 50 per cent. The aluminium, which may be formed by refining normal electrolytic aluminium by subjecting it to a form of fusing electrolysis in the so-called three layer system, may be applied to the cable by extrusion or in the form of bands which are wrapped longitudinally or helically about the cable, the edges of the band or bands, which may abut, overlap or project radially outwards, being welded together. To facilitate electric resistance welding together of the bands the edges thereof may be artificially oxidized. A heat dissipating or insulating layer may be disposed immediately under the bands to protect the cable core during the welding operation. Reference has been directed by the Comptroller to Specification 476,040 (as open to inspection under Sect. 91 of the Acts.)
Patent GB-1263715-A (GB)
Title: Light sensitive compositions
Inventor: REYNOLDS KENNETH
IPC: G03C1/62
Filed: 1968-07-24
Abstract: 1,263,715. Photographic materials and their use in physical development. MINNESOTA MINING & MFG CO. July 16, 1969 [July 24, 1968], No.35411/68. Heading G2L. [Also in Division C7] A light-sensitive composition capable of physical development comprises a diazonium salt or condensate thereof and a palladium compound which is reduced to palladium by a product produced on exposure of the diazonium salt or its condensate. The composition may contain a polymer such as polyvinyl alcohol or polyvinyl pyrrolidone and may be coated on a support, imagewise exposed and developed with a solution containing a metal salt which is catalytically reduced to the metal by the palladium. Specified metal salts are nickel and cobalt chloride and copper sulphate.
Patent GB-921987-A (GB)
Title: Improvements in slat assemblies for awnings, screens, blinds, doors or the like
Inventor: TAYLOR ALFRED CHARLES
IPC: E06B9/15
Filed: 1960-10-17
Abstract: 921,987. Hinged slat blinds and shutters. MEYERS TAYLOR PTY. Ltd. Oct. 17, 1960, No. 35517/60. Class 20 (3). [Also in Group XXV] In the slat assembly of blind, awning or shutter &c. of the kind in which each slat 10, Fig. 5, has each longitudinal edge rolled for hooked engagement with an oppositely rolled edge of the adjacent slat, the slats are prevented from endwise relative movement by a pin 16, Fig. 4, provided with a groove 20 forming a shoulder 21 which, when the pin is placed in the inner rolled edge 11 of the two co-operating rolled edges, engages with a tongue 23 pressed on the inner rolled edge 11, at such position that the head 17 of the pin is then flush with the end of the edges 11 and 12 of the slats.
Patent GB-304753-A (GB)
Title: Improvements relating to gas-washing towers
IPC: B01D47/06
Filed: 1928-12-03
Abstract: 304,753. Brassert & Co., H. A., (Assignees of Brassert, H. A., and Barrett, F. W.). Jan. 27, 1928, [Convention date]. Scrubber and washers.-A gaswashing tower comprises a number of sections of decreasing diameter in the direction of flow of the gas therethough, and connected by offset parts. Gas enters the largest section 19, Fig. 1, at the base, rises through baffles or hurdles 23, 25, to a smaller section 28, and escapes from the top-most and smallest section 32. Nozzles 33, 34, 37 are arranged to spray the hurdles, and a nozzle 15 causes a swirl at the base and removes deposits. The flow of water down the walls of the tower is interrupted by the lower edge 45, 46 of an upper section at the junction with a lower section; in a modification, the upper edge 50, Fig. 4, of a section 49 is bent inwards to engage the section 48 above.
Patent GB-760767-A (GB)
Title: Improvements in means for supporting the load supporting structure of trucks, trailers, semi-trailers and similar vehicles on the axles of their road wheels
IPC: B62D7/14
Filed: 1954-12-09
Abstract: 760,767. Steering trailers. MATTEAZZI, J., and BRODSKY, M. Dec. 9, 1954, No. 35673/54. Classes 79(3) and 79(5). [Also in Group XXXII] Relates to means for supporting the body or load carrying structure of trucks, trailers and the like on the axles of the road wheels. According to the invention, each rear axle 1 is provided with at least one supporting member 4 arranged above and rigidly secured to the axle, the upper surface of this member being obtusely dihedral, with the intersection of its surfaces disposed at a right angle to the axis of the axle 1, and a box a is secured to the spring suspension or other supporting arrangement for the vehicle body having an upper internal surface 6 which is also dihedral corresponding to the upper surface of the supporting member 4, the displacement of the axle relative to the vehicle body when the vehicle is moving along a curved path being guided by projections 10 on the axle 1 engaging with the front and rear walls 11 of the box a. As shown, the axle 1 is provided with a pair of box members a, a<SP>1</SP> joined together by a part 15 and provided with covers 13, 13<SP>1</SP>. Axial displacement of the axle is limited by engagement of the projection 10 or 10<SP>1</SP> with a corresponding stop 12 or 12<SP>1</SP> on the box members a and a<SP>1</SP> respectively. The boxes pertaining to each axle are angularly disposed in opposite senses in a plane parallel to the axis of. the axle, permitting a steering movement of the axle when rounding a curve. The engaging surfaces of the supporting members 4, 4<SP>1</SP> and boxes a, a<SP>1</SP> are lubricated automatically during axle displacement by means of ducts 23 in the box which communicate with a reservoir 20 and with the engaging surfaces. The invention is applicable to vehicles having dual axles, Figs. 8-10 (not shown).
Patent GB-1466828-A (GB)
Title: Diagnostic test system
IPC: C12Q1/10
Filed: 1975-08-29
Abstract: 1466828 Diagnostic test system WARNERLAMBERT CO 29 Aug 1975 [30 Sept 1974] 35711/75 Heading G1B A diagnostic test system for detecting the production of #-galactosidase by bacterial hydrolysis of an o-nitrophenyl-#-D-galactopyranoside substrate, comprises a bibulous material having on one test unit a substrate zone containing from 0À05 to 3À0mg. of dry o-nitrophenyl-#-D-galactopyranoside, a buffer zone separate but contiguous to the substrate zone containing from 0À01 to 0À1 millimoles of a dry buffer system which will maintain a pH of from 6À5 to 8À5. The test system can be made by preparing first solution containing from 0À5 to 5À0% weight/volume, based on the volume of the total solution, of o-nitrophenyl-#-D-galacto-pyranoside and from 25 to 75% by volume of acetone in water and then a solution of a buffer system, which will maintain a pH of from 6À5 to 8À5, containing from 0À5 molar to 1À0 molar buffer and thence applying the substrate solution to a zone of a bibulous material and evaporating to dryness to provide from 0À05 to 3À0mg. of o-nitrophenyl-#-D-galactopyranoside on one test unit of the bibulous material and applying the solution of buffer system to a zone of the bibulous material separate but contiguous to the substrate zone above and evaporating to dryness to provide from 0À01 to 0À1 millimoles of buffer on one test unit of the bibulous material. The test system can be used for identifying and differentiating micro-organisms which produce #-galactosidase by immersing the substrate and buffer zones of the diagnostic test system in a test tube containing about 0À3 ml. of a saline suspension of an unknown culture and incubating for about 4 hours at a temperature of from 35 to 37C and observing  the liquid in the test tube for the presence of a yellow coloration, viz. o-nitrophenol produced by hydrolysin of the substrate by bacterially produced # galactosidase enzyme, as a positive indication that #-galactosidase-producing micro-organisms are present.
Patent GB-384103-A (GB)
Title: Improvements in and relating to overall non-skid chains or girdles for road vehicle tyres
IPC: B60C27/08
Filed: 1931-12-24
Abstract: 384,103. Tyre chains. KENNEDY, D. S., Harewood Forest Works, Longparish, Hampshire. Dec. 24, 1931, No. 35717. [Class 144 (ii).] The tread shoes of an overall chain for wheel tyres each comprise two or more plates a shaped to straddle the tvre and at tached to side retaining-chains e. The plates of each shoe are connected by bolts b to angled links d, distance sleeves c being fitted on the bolts. The positioning of the sleeves in relation to the arms d<1> of the links, as shown in Fig. 2, is utilized to adjust the retaining-chains.
Patent GB-432103-A (GB)
Title: Synthetic resins and synthetic resin varnishes and the manufacture thereof
IPC: C08G63/48
Filed: 1933-12-21
Abstract: Synthetic resins are prepared by the condensation in the presence of a heat treated vegetable oil of a polybasic organic acid or anhydride with a partially esterified polyhydric alcohol containing at least two free hydroxyl groups, the acid constituent being a mono-basic acid derived from an oil or a natural resin which oil, resin or partial ester may be heat treated prior to the condensation reaction. Natural resins or their esters and dyes or pigments may be added. The products are soluble in heat treated vegetable oils.  In an example the monoglyceride of linoleic acid is condensed with phthalic anhydride in the presence of heat treated wood oil to yield a product that may be diluted with a hydrocarbon and mixed with a drier to give a varnish.
Patent GB-1000309-A (GB)
Title: Improvements in or relating to the treatment of gases
Inventor: PERCIVAL GEORGE
Filed: 1962-09-21
Abstract: A process for producing gases containing methane comprises reacting steam with the vapours of paraffinic hydrocarbons having an average of from 4 to 15 carbon atoms per molecule, e.g. a light petroleum distillate, in a bed of nickel catalyst, the vapour and steam being passed into the bed at a temperature of 350 DEG  to 600 DEG  C. (over 500 DEG  C. in the case of C4 to C10 hydrocarbons), preferably 500 DEG  to 550 DEG  C., under such conditions that the bed is maintained at a temperature of 400 DEG  to 550 DEG  C. Preheat temperatures above 350 DEG  C., e.g. up to 600 DEG  C., are attained without premature thermal decomposition of the hydrocarbons by eliminating local hot regions on the walls of the preheater for the hydrocarbon/steam mixture, or by heating the hydrocarbons separately to 450 DEG  C., and then raising their temperature to 600 DEG  C. by mixing with steam.  The preferred minimum steam/hydrocarbon ratio by weight is 1.6, and the reaction may be carried out at 1 to 50 atmospheres, preferably 10 to 25 atmospheres. The effect of using higher preheat temperatures is to prolong the life of the catalyst. A comparative example is given.
Patent GB-1402449-A (GB)
Title: Rotary vacuum filter
IPC: B01D33/00
Filed: 1972-08-02
Abstract: 1402449 Rotary drum vacuum filter WEDAG WESTFALIA DINNENDAHL GPOPPEL AG 2 Aug 1972 [2 Aug 1971] 36177/72 Heading BID [Also in Division F2] A rotary vacuum filter comprises an endless belt 5 entrained round a drum 1, the drum presenting a generally convex axial section as shown to assist belt centering and prevent creasing. The drum may include axial bars 3 of rubber or plastics whose free, radially outer edges are curved, the bars being thicker in the middle than at the ends. The curvature may be smooth or may be simplified (Fig. 3, not shown) to present a drum periphery of double frusto-conical form. The bars in the latter case may be divided at the median plane of the drum. In Fig. 4 (not shown) the drum periphery is formed by a perforate metal shell.
Patent GB-434113-A (GB)
Title: Improvements in or relating to the treatment of metal sheets and the like
IPC: C21D8/04
Filed: 1933-12-22
Abstract: 434,113. Altering physical structure by working. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Bethlehem Steel Co. ; Bethlehem, Pennsylvania, U.S.A.) Dec. 22, 1933, No. 36187. [Class 83 (iv)] Working at specified temperatures.-Tendency to flute or stretcher strain in annealed or normalized low carbon steel sheets is lessened by subjecting them to mechanical strain and preventing their reversion to their original state upon heating and subsequent cooling by subjecting them to mechanical strain during the cooling while still at an elevated temperature, above 700‹ F. and preferably about 750‹ F. The strain may be applied by a roller leveller or the metal strip may be unwound from one roll on to another roll. Alternatively, sheet on a braked drum 20 may be unwound past an idling roll 21 in a heated bath of salts and around two rolls 23, 24 geared together to run at the same speed, the second roll 24 having a diameter 1¢ per cent greater than the first roll 23. Such a stretching may take place in successive stages of 1 per cent each time at temperatures of 700‹ F., 600‹ F., 500‹ F., &c. The sheet material may be treated before tinning and the sheet then passed between nip rollers 34, Fig. 3, and through a tin pot 32, kept at about 600‹ F., to a roller leveller 33 which removes strains introduced by the tinning process. Specification 420,469 is referred to.
Patent GB-507547-A (GB)
Title: Device for stretching or tensioning the tips of a pair of skis
IPC: A63C11/02
Filed: 1938-12-12
Abstract: 507,547. Skis. BURCH, L. Dec. 12, 1938, No. 36229. Convention date, Dec. 15, 1937. [Class 132 (i)] Apparatus for stretching the tips of a pair of skis having their running surfaces adjacent, comprises clamps 1 holding the edges of the skis together and connected by resilient parts 2 with means for stretching the tips of the skis such as a toggle lever construction 8 and 9. The levers 8 and 9 may be U-shaped in cross-section and are provided with rollers 5. Padding may be provided in clamps 1 and levers 8 and 9 may be replaced by a double toggle lever construction or by a simple rod.
Patent GB-911445-A (GB)
Title: A holder for electric or electronic components
Inventor: WILSON ROBERT H
IPC: H05K7/12
Filed: 1959-11-09
Abstract: 911,445. Clips. NORTHROP CORPORATION. Nov. 9, 1959, No. 36242/59. Class 44. A transistor 30, Fig. 3, is mounted on a printed circuit unit 10 by a clip 16 which is non-rotatably secured to the unit panels 12, 14 by a rivet 20 and the engagement of a tab 26 depending from the clip with aligned apertures 22 in the panels. The clip comprises spring legs 34, Fig. 2, and a bight 18 from which projects, in addition to the tab 26, a tab 28 for holding engagement with a flange 40 of the transistor.
Patent GB-883253-A (GB)
Title: Improvements in and relating to waist bands and the like and the manufacture thereof
IPC: A41F9/00
Filed: 1958-11-11
Abstract: 883,253. Garment waistbands. GRIMM, R. Nov. 11, 1958 [Nov. 13, 1957], No. 36257/58. Class 141 [Also in Group IX] A waistband has loops 42, through which a belt may be threaded, formed by floating the ordinary weft threads or a thick cord on the surface of the band, and has intervening loops 46 formed by shorter floats for engagement by hooks on the ends of the belt. The fabric may be two-ply, the back ply being wider than the front ply and serving as a lining for the waistband.
Patent GB-1516217-A (GB)
Title: Shaft-driven motorcycle
IPC: F16C3/02
Filed: 1975-09-03
Abstract: 1516217 Mounting drive shafts in motorcycles HONDA GIKEN KOGYO KK 3 Sept 1975 [5 Sept 1974] 36270/75 Heading B7H The output shaft 1 of a motor-cycle gear box is connected to a wheel drive input 7 by a propellor shaft 2 with a rear fork R, the shafts 1, 2 being disconnectible by axial movement of shaft 2 towards shaft 7, this arrangement affording easy removal of the engine-gear box unit. The shaft 2 carries a universal joint 3 which is splined connected at 4 to shaft 1. A splined sleeve 8 at the other end of the shaft 2 is slidably mounted on splines 9 carried by the imput 7. After removal of a securing pin 10 and a circlip 5 the shaft 2 may be slid rearwardly until the connection between joint 3 and shaft 1 is broken. The shaft 2 may be connected to one or both of the other shafts by a dog clutch.