baber/WOPTO huggingface dataset:
Patent GB-1291327-A (GB)
Title: Processing aid for polyvinyl chloride
IPC: C08L27/06
Filed: 1970-09-10
Abstract: 1291327 Polyacrylate modified PVC STAUFFER CHEMICAL CO 10 Sept 1970 43289/70  Headings C3G and C3P A process for preparing a polyacrylate modified PVC for use as a PVC processing aid comprises (1) suspension polymerizing vinyl chloride in the presence of 0À01-5% based on monomer of a suspending agent, with agitation, to obtain PVC particles in the size range 5-150 microns, (2) removing unreacted monomer after at least 60% polymerization, (3) adding to the suspension (a) a chain transfer agent, (b) monomer consisting of 80-100% methyl methacrylate and 0-20% other monomers and (c) a free-radical initiator soluble in and pre-mixed with (b) to provide 20-100% of monomer based on PVC, (4) suspension polymerizing monomer (b) with agitation to obtain particles in the size range 10 microns to a maximum such that no more than 15% are larger than 150 microns and (5) recovering the modified PVC having polyacrylate moieties polymerized in and/or on the PVC particles. In examples the chain transfer agent (a) is lauryl mercaptan, pentaerythritol tetrathioglycollate, toluene, acetaldehyde or methyl ethyl ketone and the monomer (b) is methyl methacrylate alone or mixed with ethyl acrylate, glycidyl methacrylate or ethyl methacrylate. Methyl cellulose is used as suspending agent and azobisisobutyronitrile is used as initiator in polymerization of vinyl chloride with the same or lauroyl peroxide in the acrylate polymerization. The products are blended with PVC.
Patent GB-919594-A (GB)
Title: Collapsible display device
IPC: G09F1/06
Filed: 1961-12-04
Abstract: 919,594. Display devices. FAIRHAVEN PROPERTIES CORPORATION. Dec. 4, 1961 [Sept. 18, 1961], No. 43379/61. Class 3 (2). A collapsible cardboard display device is made up from two corrugated panels 10, 39 which are interconnected in lazy-tong fashion by cut-out flaps 25, 34, 35, 30 on the member 10 being glued to the member 39. The member 39 may be apertured for mounting on a pole or the panel 10 provided with apertured flaps for like mounting purposes, see Figs. 5-8 (not shown).
Patent GB-1357387-A (GB)
Title: Steel
IPC: C22C38/60
Filed: 1971-09-17
Abstract: 1357387 Steel composition SOC NOUVELLE DES ACIERIES DE POMPEY 17 Sept 1971 [17 Sept 1970] 43387/71 Heading C7A A steel comprises in weight per cent:- 0À05 - 0À70 % carbon 0À9 - 2À0 % manganese 0À04 - 0À08 % tellurium up to 0À80 % silicon up to 0À10 % sulphur up to 0À05 % phosphorus optionally up to 8% in total of one or more of chromium, molybdenum, nickel and vanadium, the balance, apart from impurities, being iron and the weight ratio of manganese to tellurium exceeding 15. The steel is produced by a conventional melting procedure and the product has improved machinability and can be worked easier than corresponding steels containing no telluruim.
Patent GB-906536-A (GB)
Title: Process of making cyanoalkylsilanes
IPC: C07F7/02
Filed: 1960-12-19
Abstract: A metal surface is provided with a protective coating by applying an (aminoalkyl) trialkoxy silane to the surface and curing.  The amino group is at least three carbon atoms removed from the silicon atom in the silane.ALSO:Cyanoalkyl silanes in which the cyano group is connected to the silicon atom through at least 2 carbon atoms are prepared by reacting an alkene nitrile with a silane having one silicon-bonded hydrogen atom and three silicon-bonded hydrolysable groups, in the presence of a morpholinosilane catalyst of the formula <FORM:0906536/IV(a)/1> where A is an alkyl, aryl, alkoxy or halogen radical and y is 1 to 4, at temperatures of 50 DEG  to 250 DEG  C. Examples of catalysts are morpholinotrimethylsilane, dimorpholino diethyl-, diethoxy- and dichloro-silanes, trimorpholino phenyl- and ethoxy-silanes, morpholinotrichlorosilane, morpholinophenyldichlorosilane and tetramorpholinosilane.  The hydrolysable group in the silane reactant is defined as a halogen, hydrocarbyloxy or acyloxy radical.  The reaction mixture may also contain a silane RSiHX2, where R is hydrocarbon and X is a hydrolysable group, as well as a polymerization inhibitor such as a phenolic compound.  The catalyst may be removed by esterification or hydrolysis to form a silylalkoxide or silanol which may be stripped from the mixture.  The esterification may occur by esterifying the cyanoalkylchlorosilane products to form the corresponding alkoxy derivatives which can be hydrogenated to aminoalkyl-alkoxy silanes. The latter compounds can be cured on metal surfaces.  The examples describe the preparation of b -cyanoethyltrichlorosilane.  The morpholinosilanes are prepared by reacting a helosilane with morpholine.  Specification 847,805 is referred to.
Patent GB-1080249-A (GB)
Title: Improvements in and relating to methyl cellulose
IPC: D06B1/14
Filed: 1965-10-15
Abstract: A process for the preparation of pulverulent methyl cellulose which is soluble in water without formation of lumps comprises kneading at a pH value between 3 and 7, a mixture of methyl cellulose with a water content of 40 to 70% to a homogenous mass with a water soluble dialdehyde, the dialdehyde being used in a proportion of 0.001 to 0.2 mol per anhydroglucose residue of the methyl cellulose, the product being pulverized and dried. Preferably, the dialdehyde is glyoxal, but succinic acid dialdehyde or adipic aldehyde may also be used, and in general water soluble compounds with preferably 2 to 8 carbon atoms. Methyl celluloses which also contain other functional groups in addition to methyl groups, for example ethoxy or propoxy groups, may be used as starting materials, provided that the number of methyl groups predominates and the characteristic properties of the methyl cellulose, for example its precipitation on heating in aqueous solution, are retained.  The reaction between the methyl cellulose and the dialdehyde is carried out advantageously in a weakly acid to neutral medium.  The addition of acid may be effected simultaneously with the addition of the dialdehyde, and inorganic or organic acids, for example formic acid, acetic acid, hydrochloric acid or phosphoric acid, may be used, phosphoric acid being preferred.  The amount of acid added is chosen so that the pH value of the pastes after thorough kneading lies between 3 and 7, preferably at about 4 to 6. Kneading may take place at room temperature or at moderately elevated temperature.  The properties of the products prepared by the process of the invention depend largely on the proportion of the dialdehyde used.  If dialdehyde is used in a proportion in the lower limits of the range given, for example between 0.001 and 0.01 mol per anhydroglucose residue, powders are obtained which dissolve in water without formation of lumps and which, with regard to their speed of solution, behave like methyl cellulose which has not been treated by the process of the present invention but in which the formation of lumps is excluded.  This occurs especially with products containing methoxy or propoxy ether groups.  If on the other hand larger proportions of the dialdehyde are used, powders are obtained whose speed of solution after dispersion in water is slowed down more or less greatly.  In examples, methyl cellulose prepared by reacting alkali cellulose with methyl chloride in known manner, is treated with glyoxal to obtain a product which may be dispersed in water without difficulty leaving the product free from lumps.  In a second example, methyl ethoxy cellulose prepared by reaction of alkali cellulose with ethylene oxide and methyl chloride is treated with glyoxal to obtain a powdered product which on stirring in cold water dissolved in 15 minutes without formation of lumps.
Patent GB-1368374-A (GB)
Title: Catalysts used in the production of ethylene oxide by oxidation of ethylene
IPC: C07D301/10
Filed: 1972-09-22
Abstract: 1368374 Preparation of ethylene oxide SOC ITALIANA RESINE SIR SpA 22 Sept 1972 [17 Nov 1971] 44066/72 Heading C2C [Also in Division B1] Ethylene oxide is produced by the oxidation of ethylene with molecular oxygen at 269 C. in contact with a metallic silver-based supported catalyst which has been formed by impregnating a granular support with a heat decomposable silver salt, drying and subjecting to a two stage heat treatment under specified conditions (see Division B1).
Patent GB-1510385-A (GB)
Title: Surround sound system
IPC: H04R5/02
Filed: 1975-10-27
Abstract: 1510385 Multichannel sound systems J MOSELY 27 Oct 1975 [16 Dec 1974] 44166/75 Heading H4R In a system in which a plurality of directional sound signals are recorded for reproduction by a corresponding plurality of loudspeakers, at least a sound signal corresponding to a centre front (CF) location of a recording/listening area is recorded separately from the remaining sound signals which include signals corresponding to LF, RF, LB, RB positions of the recording/listening area. The application is to surround sound arrangements for cinemas and the recording medium is a number of magnetic or optical tracks adjacent the picture frames on a film. In a first embodiment, signals LF, RF, LB and RB are encoded into two composite signals LT, RT using any known quadraphonic encoding technique and are recorded together with the CF signal on respective ones of three magnetic tracks on a film (Fig. 2, not shown). Fig. 4 shows how six recording channels can be utilized for a ten channel system with the CF and CB signals being recorded on two of the tracks. The four other front channels are encoded into two channel form as are the two other back signals and the two side signals. Known quadraphonic encoders and decoders may be employed.
Patent GB-1188859-A (GB)
Title: Improvements in or relating to Mechanical Seals.
Inventor: LYMER ARTHUR
IPC: F16J15/32
Filed: 1967-09-28
Abstract: 1,188,859. Mechanical seals. BURMAH OIL TRADING Ltd. 19 Sept., 1968 [28 Sept., 1967], No. 44206/67. Heading F2B. Secondary sealing means in a mechanical seal comprises a P.T.F.E. ring 6 which is housed in a groove 5 in one, 2, of the seal rings and has an axially-opening annular recess in which a resilient member, e.g. a coil spring 9, is located. The seal ring 2 is mounted on a shaft 3 for rotation therewith and is urged by a spring 4 into facial sealing contact with a non-rotary seal ring 1. The spring 9, which may be of stainless steel or nickel alloy, is mounted in a circumferential groove 7 in the ring 6, being inserted therein through an annular slot 8.
Patent GB-1206247-A (GB)
Title: Roll device
IPC: F16C13/00
Filed: 1968-09-17
Abstract: 1,206,247. Rolling metals; jointing. SANDVIKENS JERNVERKS A.B. 17 Sept., 1968 [18 Sept., 1967], No. 44207/68. Headings B3M and B3V. [Also in Division F2] A roller consists of a sintered carbide ring 10 mounted between flanges provided by a steel sleeve 13 and screwed-on ring 12, the flanges having raised portions 17, 18 forming gaps 19, 20 which are filled with an adhesive such as synthetic resin, to secure the ring to the flanges. The adhesive may also be applied to the screwthread 15 connecting the sleeve 13 and ring 12 The raised portions 17, 18 may be of annular or radial form, integral with the flanges as shown or with ring 12, or formed separately from sheet material. A recess 16 in the ring is engaged by a driving lug or key on the mounting shaft. The single ring may be replaced by two or more directly secured to one another.
Patent GB-1270733-A (GB)
Title: Improvements in or relating to the jointing of electric cables
Inventor: GILBERT PETER DEREK
IPC: H02G15/18
Filed: 1969-04-25
Abstract: 1,270,733. Cable joints. PIRELLI GENERAL CABLE WORKS Ltd. 15 April, 1970 [25 April, 1969], No. 44207/71. Divided out of 1,270,732. Heading H2E. In a cable joint encased by a sleeve 8 frosting over either the cable sheaths or, as shown, a pair of plastics end members 6, 7 cast in situ, hardenable sealing material 17 is bonded to the adjacent external surface of the sleeve and sheaths and end members and for ease in re-opening the joint, a release device comprising turns of wire 20 is wound around the surface of the end members, or the sheath, prior to sealing. A winding of strong ductile wire may be pulled out to break the seal or when soft wire is used the seal may be broken by hammer blows without damaging the end members or sheaths. In the case of a polyethylene sleeve (or sheath) layers e.g. 19 of aluminium foil may be bonded to it as described in Specification 1,087,061. End members 6, 7 may be epoxy resin formed as described in Specification 1,270,732. Bands 18 of adhesive tape delimit the sealing material 17, which may be epoxy resin. Preferably an epoxy resin primer is applied before and after application of the release windings. Aluminium layers 19 are also coated with primer. Release windings are also advantageous when the sleeve or sheath is metal.
Patent GB-956502-A (GB)
Title: Improvements in or relating to bars and couplings for connecting bars end-to-end
Inventor: STUART JAMES DEREK
IPC: F16B7/04
Filed: 1961-12-11
Abstract: 956,502. Tube joints. STEEL RING & ENGINEERING CO. Ltd. Dec. 11, 1962 [Dec. 11, 1961], No. 44320/61. Heading F2G. A coupling for connecting grooved tubular bars 1 comprises a body 6 having flat faces 7 from each of which a spigot 8 and fins 7a project perpendicularly, each spigot being central and each fin being near the edge of a face so that the bars are coupled by inserting a spigot into the bore 2 and fins into the grooves 5 of each bar. When the bars are pushed home on the body 6, wedges 11 may be driven through the fins, spigots and bars, suitable holes being provided for the purpose. By providing spigots and fins on other faces of the body any number of bars up to six may be coupled at right angles, or the body may be shaped so that any number of grooved tubular bars may be coupled in any angular relationship. If the faces 4 of the bars are also grooved, additional fins may be provided in correspondence.
Patent GB-906848-A (GB)
Title: A shock absorbing strut
Inventor: STREESE WALTER
IPC: B64C25/60
Filed: 1960-12-30
Abstract: 906,848. Hydro-pneumatic shock absorbers. FLUGZEUGWERKE DRESDEN VEB. Dec. 30, 1960, No. 44742/60. Class 108(3). A shock - absorber strut, e.g. for the forward end of a tandemtype aircraft landing gear and which compensates for braking torque and retains a selected angle of incidence, comprises a supplementary piston 4 which is accommodated within a principal piston and rod 2, 3 housed within a cylinder 1 the piston 2, which is loaded by a compression spring 6, dividing the cylinder 1 into a cylinder chamber 10, which is supplied with gas. under pressure through a filling opening 7, and an annular chamber 11 having an opening 9 which communicates, through a connection having a non-return valve, with the hydraulic system of the brakes. A cavity 13 in the supplementary piston and rod 4, 5 communicates through ports 8 with an inner annular chamber 12 around the rod 3 compressed air, at a pressure which exceeds that of the maximum pressure in the cylinder chamber 10, being supplied to the inner annular chamber 12 through a filling valve in an abutment 15. The inner annular chamber 12 contains a ring 20 which limits the stroke of the supplementary piston 4. Lugs 21, 22 are provided on the supplementary piston rod 5 and the cylinder 1 for connection respectively with the wheel carriage and the aircraft body. When the wheels of the aircraft first touch the ground the capacity of the annular chamber 11 is reduced and the spring 6 is compressed, hydraulic pressure, proportional to the braking pressure, being transmitted to the annular chamber 11 when the brakes are applied. If the strut is overloaded or, if the hydraulic damping due to the brakes exceeds a predetermined value, the supplementary piston rod 5 is forced out of the principal piston rod 3.
Patent GB-1108563-A (GB)
Title: 3ª‡-amino steroids and the preparation thereof
Inventor: HEWETT COLIN LESLIE
IPC: C07J41/00
Filed: 1963-11-14
Abstract: Novel steroids of the formula <FORM:1108563/C2/1> (wherein Y is H2, H(#xOH) or O; Z is a H (b COCH3), a H(b CHOX.CH3), H(b OX) or O where X is H or acyl; R1 is C1- 6 alkyl or hydroxyalkyl; R2 is C1- 6 alkyl or hydroxyalkyl; or NR1R2 is a saturated heterocyclic amino radical; R3 is H or acyl; and R4 is H or C1- 6 alkyl) are prepared from the corresponding 3a -halo steroids and the appropriate amines. The 3a -halo steroids may in turn be prepared from the corresponding D 2-steroids and hypohalous acids or reagents yielding them. Alternatively, the 2b -hydroxy-3a -halo-steroids may be treated with alkali to give the 2b ,3b -epoxides and these then reacted with the appropriate amine.  In the products carbonyl groups may be reduced to hydroxy groups and these esterified.  The esters may subsequently be hydrolysed.  The products may also be converted to acid-addition salts and quaternary ammonium derivatives.  The steroids of the invention, which are stated to be c.n.s. stimulants, may be made up into pharmaceuticals or veterinary compositions with suitable carriers.
Patent GB-1282635-A (GB)
Title: Improvements in or relating to semiconductor devices made of gallium arsenide
IPC: H01L29/00
Filed: 1969-09-12
Abstract: 1282635 Semi-conductor devices NIPPON ELECTRIC CO Ltd 12 Sept 1969 [14 Sept 1968] 45193/69 Heading H1K A GaAs semi-conductor device includes a low resistivity substrate 1 doped with Te, S or Se, a low resistivity first layer 2 grown thereon and doped heavily with Sn, Ge or Si, and a higher resistivity second layer 3 grown on the layer 2. In the preferred method of manufacture the first layer 2 is vapour grown on a Te doped GaAs substrate heated to 750‹ C. using hydrogen as a carrier gas bubbled through arsenic trichloride at 0‹ C. A source of Ga and Sn is also heated at 850‹ C. in the reaction tube. The higher resistivity layer 3 is grown similarly, except that Sn is omitted from the Ga source. The layers may also be grown from solution. The invention is applicable to the manufacture of Schottky barrier diodes, varactor diodes, Gunn or L.S.A. diodes, transistors or integrated circuits.
Patent GB-1063516-A (GB)
Title: Shoe soles and processes for the production thereof
IPC: A43C15/16
Filed: 1963-11-15
Abstract: 1,063,516. Soles. INDUSTRIEWERKE LEMM & CO. G.m.b.H. Nov. 15, 1963 [Nov. 17, 1962], No. 45293/63. Heading A3B. A shoe sole comprises an outer sole 7 and an intermediate sole 2 of a material of different character from or different from that of the outer sole having projections 3, 4, 5, 6 which pass through holes 8 in the outer sole, the holes being of smaller cross-section than the projections immediately outside the outer sole to anchor the outer sole to the projections. The outer sole is placed in a mould and the intermediate sole with its projections moulded from a suitable moulding composition such as rubber or synthetic material. The sole may be attached to the lasted upper during the moulding of the sole. The margins of the holes in the outer sole may have radial cuts (not shown) or may be bent round and embedded in the projections during moulding. Different moulding compositions may be placed in the mould so that the projections in an inner zone are of a different colour and/or hardness to the projections formed at the margin of the sole. The composition used at the margin may be a porous, expanding composition and may also cover the inner zone to produce a three layer sole.
Patent GB-455380-A (GB)
Abstract: 455,380. Slipping - couplings. AVIATION & GENERAL PRODUCTS, Ltd., and JEFFCOAT, L. G., 255, West End Lane, West Hampstead, London. March 18, 1935, No. 8447. [Class 80 (ii)] [See also Group XIX] A driving shaft 22 is connected to a driven shaft 21 by a slipping-coupling comprising a plate 30 secured to the shaft 22 having holes in its periphery through which a helical spring 32 is threaded. The spring frictionally engages and drives a pair of members 34, 36, attached to the driven shaft 21.
Patent GB-1272509-A (GB)
Title: Substituted 1,3-dioxolane
IPC: C07D317/24
Filed: 1970-09-24
Abstract: 1,272,509. Dioloxane derivatives. PERSTORP A.B. 24 Sept., 1970 [2 Oct., 1969], No. 45630/70. Heading C2C. [Also in Division C3] The novel compound 4-ethoxycarbonyl-1,3- dioxolane is prepared by condensing glyceric acid ethyl ester with formaldehyde in the presence of an acid catalyst. The novel compound, 4-(3<SP>1</SP>-acetoxypropyl)-1,3-dioxolane is obtained by condensing pentane-1,2,5-triol with formaldehyde in the presence of an acid catalyst and esterifying the resultant 4-(3<SP>1</SP>-hydroxypropyl)-1,3-dioxolane with acetic anhydride. Formaldehyde may be replaced by paraformaldehyde in the above reactions.
Patent GB-1410185-A (GB)
Title: Heating module
IPC: F02N19/08
Filed: 1972-10-04
Abstract: 1410185 Air heaters; heating modules KOEHRING CO 4 Oct 1972 [12 June 1972] 45763/72 Headings F4K and F4T [Also in Division F1] A heating module for application to a gas flow conduit 10, Fig. 2, particularly an air intake manifold of an I.C. engine, to heat the gas passing therethrough comprises a housing 20 with an inlet having an intercepter 16 to divert a part of the flow in conduit 10 through a flow path in housing 20 from said inlet to a housing outlet which is adapted for direct communi cation with conduit 10 at a point downstream of said inlet, the housing flow path causing gas passing therethrough to swirl about a heat source in the housing 20 in the region of the outlet therefrom, whereby the diverted gas flow is heated in the vicinity of the main flow through conduit. The heat source comprises a flame formed by a burner having a fuel delivery nozzle 44, igniter 104 and a flame retention head 36. The housing 20 has an inlet chamber 26 and an outlet chamber 28 separated by a partition 22 with a through hole 24 providing an acceleration of the diverted gas flow, a minor part of which is diverted through a bore 84 to a compressor, comprising a D.C. motor driving a vaned disc 80, Fig. 3, eccentrically mounted in a chamber 82, delivering compressed gas via a passage 55 to the nozzle 44 for inspiration and atomization of the fuel supplied via a metering device 46. The gas passes from the compressor to passage 55 via a pressure regulator (100), Fig. 4 (not shown), from which gas may be relieved back to conduit 10. The igniter comprises a coil 62, exciter 63, and sparking device 104. When applied to the air intake of an internal combustion engine the module is stated to acid starting thereof and substantially eliminates white or black smoke problems and reduces nitrous oxide, carbon monoxide and unburned hydrocarbon emissions.