baber/WOPTO huggingface dataset:
Patent GB-836340-A (GB)
Title: Hot-stretching of polyacryloí¡í¡
IPC: D02J1/22
Filed: 1958-07-16
Abstract: <FORM:0836340/IV (a)/1> Polyacrylonitrile yarns, or acrylonitrile copolymer yarns with at least 85% of polyacrylonitrile, are heated by a rotating roller held at 100-200 DEG  C. and, before being drawn off said roller, are so stretched that the point of stretch is located on the roller, and can change its position thereon, after which the stretched yarn is guided over a slightly curved plate heated to a temperature within 50 DEG  C. (either way) of the roller temperature. Preferably the roller temperature is 130-180 DEG  C.  As shown, a polyacrylonitrile yarn 1 is passed to a heated rotating roller 2, having an associated roller pin 3, and is wound round the roller several times.  After leaving the roller, the yarn travels over a heated plate 4, which may be pivotally arranged, and then passes without slip about a second driven roller 6 rotating at a peripheral speed 4-10 times that of roller 2.  The stretched yarn is collected via displacement guide 8 on a bobbin 7.  Yarn treated in this way has a highly-uniform denier and fabrics made therefrom have uniform dyeing characteristics.
Patent GB-689507-A (GB)
Title: Improvements in circumferential seals of rotary regenerative heat exchangers
IPC: F28D19/04
Filed: 1950-09-18
Abstract: 689,507. Rotary regenerative heat-exchangers. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. Sept. 18, 1950 [Oct. 6, 1949], No. 22844/50. Class 64 (i). A circumferential seal in a rotary-drum type regenerative heat-exchanger comprises seal support members attached to the rotor shell 10 at circumferentially spaced points on its perimeter and adjacent the edges thereof and sealing shoes 26 together forming a ring, slidably mounted on said supports and spring-urged in a direction axially of the rotor into sealing contact with an end plate 21 of the stationary casing. Preferably the sealing shoes 26 are formed with slotted portions 36 slidably engaging guide blocks 38 which together with the spring means are fixed to the rotor shell 10 by bolts 35. Each spring means comprises a plate member 34 carried on the bolt 35 and having a stem 33 which passes through a yoke 31 on the sealing shoe 26 and carries a spring 30 which is urged against the yoke 31 by means of a nut 32. A radial pressure is applied by plate springs 40 to keep the sealing shoes 26 in contact with the rotor shell 10 and with a pliable circumferentially extending seal strip 41 of glass fabric or the like attached to the edge of the rotor shell and backed up by a metallic strip 42. In the form shown in Fig. 5 the seal strip 41 is formed in cross-section with an enlarged head portion 44 which with the edge of the metallic strip 42 seats in a groove 45 in the sealing segments 26. The strips 42 may abut the edges of radial seals 46.
Patent GB-1342836-A (GB)
Title: Process for removing acid constituents from gases
IPC: B01D53/52
Filed: 1971-04-19
Abstract: 1342836 Gas purification HENRICH KOPPERS GmbH 19 April 1971 [25 April 1970] 22980/71 Heading B1L Acid gases, e.g. H 2 S,CO 2  HCN, are removed from gases by washing the gas with a carboxylic acid amide of morpholine wherein the carboxylic component has 1-7 cabon atoms, and then regeneating the washing agent by removing absorbed gas. An amine may also be present in the washing soln. The acid gases may be removed by expansion or by stream stripping. Compartive examples are also given for washing with other morpholines, propylene carbonate and sulpholane.
Patent GB-707004-A (GB)
Title: Frothed latex sponge
IPC: C08J9/40
Filed: 1951-10-03
Abstract: The physical properties of frothed synthetic rubber latex sponge are improved by treating the sponge in the vulcanized state with water containing at least one ingredient from the group consisting of alkaline earth hydroxides and alkaline earth salts, removing excess and drying the treated sponge.  Preferred treating agents are calcium and barium hydroxides, calcium and barium chlorides, strontium hydroxide, and strontium chloride; and the hydroxides and salts of magnesium and beryllium.  These agents may be used in a concentration of from .05 to 25 per cent.  The synthetic rubber may be polybutadiene, or a copolymer of butadiene with styrene.ALSO:The physical properties of frothed rubber latex sponge are improved by treating the sponge in the vulcanized state with water containing at least one ingredient from the group consisting of an alkaline earth hydroxide and an alkaline earth salt, removing excess treating agent and drying the treated sponge.  Preferred alkaline earth treating agents are calcium hydroxide, barium hydroxide, calcium chloride, barium chloride, strontium hydroxide, and strontium chloride; and the hydroxides and salts of magnesium and beryllium.  These agents may be used in a concentration of from .05 to 25 per cent.  The rubber may be natural rubber, or a polymer of butadiene, or a copolymer of butadiene with styrene. In examples a mix is made from natural rubber latex, sulphur, zenite, ethyl zimate, symmetrical - di - beta - naphthyl para phenylene diamine, potassium oleate and potassium ricinoleate and frothed and vulcanized, the resulting sponge being washed with a suspension or solution of barium hydroxide, calcium hydroxide, or calcium chloride.
Patent GB-534656-A (GB)
Title: Improvements relating to steering wheels
IPC: B62D1/08
Filed: 1939-08-09
Abstract: 534,656. Hand wheels. O'CONNOR. S. P. Aug. 9, 1939, No. 23044. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 30, 1940.] [Class 80 (iv)] Steering wheels are made preferably elliptical in shape and are provided with at least one cross panel 15 arranged at a point conveniently accessible to a hand gripping the rim, the cross panels carrying a number of electrical control devices (16 ... 25). Adjacent each panel the rim 13 is corrugated at 13<1>. Conductor wires may be led through the hollow panels 15 and a hollow or recessed portion of the rim to hollow cross bars or spokes 14 and thence to the steering column. The wheel may be of other than elliptical form and, in order to reduce the length of the connecting wires, hollow or channelled transverse bars 30 may be provided.
Patent GB-695341-A (GB)
Title: 1-(p-hydroxyphenyl)-2-(-a-methyl--g-phenyl-propylamino)-propanes and a process for the production thereof
Filed: 1951-10-03
Abstract: The invention comprises amines of the formula (p) HO-C6H4-CH2-CH(CH3)-NH -CH(CH3)-CH2-CH2-R, where R is phenyl or alkylphenyl; also their salts, e.g. hydrochlorides and hydrobromides. These are made by (1) dealkylating their alkyl or aralkyl ethers; (2) hydrolysis of their N- and/or O-acyl derivatives; (3) diazotizing the corresponding p-amino compounds and boiling the solution; (4) condensing p-hydroxyphenyl-acetone with 1 - phenyl - 3 - aminobutane and simultaneously or subsequently reducing the product or subjecting it to the Leuckart-Wallach reaction; (5) condensing p-hydroxyphenyl-isopropylamine with benzylacetone or benzalacetone and simultaneously or subsequently reducing the product or subjecting it to the Leuckart-Wallach reaction; (6) reacting p-hydroxyphenyl-isopropylamine or an ether thereof with a 1-phenyl-3-halobutane, and, if necessary, splitting off the ether group by boiling with mineral acids or by palladium hydrogenation. In method (1) the ether group (e.g. methyl, ethyl, benzyl, phenethyl) may be hydrolysed by boiling with hydrochloric, hydrobromic or hydriodic acid, or by treatment with aluminium chloride or Grignard compounds.  If a benzyl ether is used the group may be split off by palladium hydrogenation.  In method (2) the acyl group may be acetyl, benzoyl or toluenesulphonyl.  The products may be separated into stereoisomeric racemates and resolved into optically active forms. In the examples the amine of the above formula (R = phenyl) is prepared (1) from its methyl ether by heating with hydrobromic acid; (2) from its benzyl ether by catalytic hydrogenation; (3) from its p-toluenesulphonyl ester by alkaline hydrolysis; (4) by diazotizing 1-(p-aminophenyl) - 2 - (a  - methyl - g  - phenylpropylamino) - propane; (5) by hydrogenating a mixture of p-hydroxyphenylacetone and 1-phenyl-3-aminobutane; two stereoisomers are produced; (6) by hydrogenating a mixture of 1-(p-hydroxyphenyl)-2-aminopropane and benzylacetone or benzalacetone; (7) by heating 1-(p-hydroxyphenyl)-2-aminopropane with 1-phenyl-3-bromobutane. The compounds where R is o-, m- or p-tolyl are prepared similarly.  Alkyl and aralkyl ethers of compounds of the above formula are obtained by methods analogous to (5) and (6) above.  Examples are given of the condensation of p-methoxyphenyl-acetone with 1-phenyl-3-aminobutane and of 1 - (p - benzyloxyphenyl)-2-aminopropane with 1-phenyl-3-bromobutane (product obtained as hydrobromide).  1 - (p - toluenesulphonyloxyphenyl) - 2 - (a  - methyl - g  - phenylpropylamino) - propane is made by reacting p-hydroxyphenylacetone with p-toluenesulphochloride and hydrogenating a mixture of the product with 1-phenyl-3-aminopropane.  1 - (p - Aminophenyl) - 2 - (a  - methyl - g  - phenylpropylamino)]propane is prepared by condensing 1-(p-nitrophenyl)-2-aminopropane with 1-phenyl-3-bromobutane and reducing the nitro group.
Patent GB-1503158-A (GB)
Title: Multipurpose infants wheeled chair
IPC: A47C3/029
Filed: 1975-05-27
Abstract: 1503158 Child's chair; on-off castors COMBI CO Ltd 27 May 1975 [30 May 1974] 23101/75 Headings A4J and A4U [Also in Division B7] A wheel chair, particularly for infants, comprises a base member 1 having front and rear wheel support rods 5, 13 pivoted thereto support rods 4 fixed in relation to the base member 1 supporting a seat body 3 for back and forth movement relative thereto, a back rest 17 hinged to the seat body 3 and a backrest upholding member 16 pivoted to the base member 1. As shown in Fig. 1, the back rest 17 is pivoted by lugs 20 to the support rods 4 and by hinges 23 to the seat body 3. The side walls 3a of the seat have slots 19 through which a rod 18 extends, the rod being fastened at its ends to the support rods 4. Means are provided for locking the rods 18 in a selected position along slots 19 thus holding the seat and backrest from movement. The backrest 17 has spaced projections 35, 36 for engaging the member 16 in a horizontal position. A hood 40 is detachably mounted on backrest 17. The wheel support rods may be retracted to the dotted line position and a stay 10 pivoted to hold the chair stationary. Alternatively with the stay 10 retracted the frame 1 which is U-shaped in plan view and curved as shown may function as a rocking means for the chair.
Patent GB-408228-A (GB)
Title: Improvements in or relating to motor road vehicles
IPC: B60G11/02
Filed: 1932-08-17
Abstract: 408,228. Motor road vehicles. TRIER, V. A., 38, Felsham Road, Putney, London. Aug. 17, 1932, No. 23112. [Classes 79 (iv) and 79 (v).] In a motor vehicle, the engine A and a longitudinal member, which may comprise the gear box A<5> and torque tube F, form a rigid structure spring-supported on one pair of wheels E and rotatably connected to the centre F<1> of the axle G of the other pair of wheels G<1> so as to be rockable relatively thereto about a longitudinal axis, whilst the frame, which is disposed mainly below the level of the longitudinal member, includes a girder member H constituting a tunnel-like housing for the longitudinal member and is supported by a spring or springs L<3> on the axle G, its other end being connected to the engine unit by a pivotal or like joint A<9>. The engine A is bolted by means of its support A<1> to a transverse leaf spring B, pivotal mountings C for the front wheel stub-axles C<1> being carried between the ends of the spring B and of links D pivoted, preferably with the interposition of friction dampers D<1>, to arms A' on the support A', the arrangement being of the nature of a parallel link motion. In a modified construction, the members C are mounted between upper and lower quarter elliptic leaf springs with the same effect. To the tunnel member H, which may be of sheet metal, are riveted &c. transverse end plates H<1>, H<2>, and an intermediate girder H<3> connected by a flooring J. The springs L<3> are centrally clamped to the ends of a transverse shaft L<1> mounted in bearings L carried by the rear plate H<1>, each spring being pivoted at one end L' to the axle G and anchored at its other end L<5> to the girder H<3>, the shaft L<1> thus transmitting torque from one spring to the other in case of individual wheel displacements. An extension K of the frame H is connected to the engine casing A<5> by a gimbal type of joint comprising an intermediate member A<6> connected by transverse trunnions A<7> to the extension K and by a longitudinally disposed pivot pin A<8> to a lug A<9> depending from the casing. Alternatively, a ball joint or a connection in which the required freedom is obtained by means of rubber bushings &c. may be employed. In order that the steering shall not be affected by rocking of the engine unit relatively to the frame, the steering shaft M<3> acts through a pinion M<2> on a toothedrack member M slidable in a transverse housing M<1> on the extension K, the movements being transmitted through ball-jointed links N<2> to arms N<3> on the stub-axle mountings C<1>.
Patent GB-1387130-A (GB)
Title: Imidazolidinones and herbicidal compositions containing them
IPC: C07D233/38
Filed: 1972-05-17
Abstract: 1387130 Imidazolidinones SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 17 May 1972 [19 May 1971] 23198/72 Heading C2C Novel compounds of general formula  wherein R represents -NH-CH 2 -R<SP>1</SP> or -N=CHR<SP>11</SP>, wherein R<SP>1</SP> is phenyl or a group represented by R<SP>11</SP> and R<SP>11</SP> is phenyl substituted by one or two Cl, Br, F, C 1-3  alkyl and/or CF 3  groups, and mineral acid salts thereof where R represents -NH-CH 2 -R<SP>1</SP>, may be prepared by treating 1-amino-2-imidazolidinone with the appropriate aromatic aldehyde in an alcohol solution, followed by hydrogenation if desired. The novel compounds exhibit herbicidal properties.
Patent GB-821905-A (GB)
Title: Storing and dispensing low boiling liquefied gases
IPC: F17C9/02
Filed: 1957-07-23
Abstract: 821,905. Storing liquefied gases; forcing liquid by gaseous pressure. UNION CARBIDE CORPORATION. July 23, 1957 [July 24, 1956], No. 23238/57. Classes 8(2) and 102(2). A double-walled heat insulated vessel 31, 32, Fig. 2, for storing liquefied gas, e.g. hydrocarbon having a boiling point below 230‹K. at atmospheric pressure is initially charged through a duct 50 with liquid at a temperature at least equal to the boiling point at the minimum service pressure whereby the vapour and liquid occupying spaces G, L are in a state of equilibrium and liquid is forced by the pressure of its own vapour through a duct 54 and a vaporizing coil 63 to a gas service outlet 53 controlled by a manual valve 71 ; the pressure of the vapour in space G being maintained during discharge periods solely by heat leak through the insulation 33. The liquid discharge duct 54 leads to a passage 51 having a transverse bore 55 controlled by an automatic valve 57 responsive to a predetermined pressure rise in space G to connect the latter to the coil 63 and gas outlet 53 and in which event liquid ceases to be forced out. The outlet 53 has a vent valve 74 and the head 35 of the vessel has a safety disc 76, Fig. 6 (not shown). The vaporizing coil comprises a down tube 65 discharging through a plurality of apertures therein into one end of a manifold 64 having its other end connected to the inlet end of the coil 63. The inner vessel 31 is suspended by its neck 36 from the head 35 of the outer vessel 32 and is centred at its base by a tube 39 telescoping into an upstanding internal flange. The evacuated insulation space is charged with silica powder mixed with heat absorbing and reflecting particles and the heat leak is transmitted to the liquid by radial metal plates 83 within the space L. Discharge of liquefied gas is effected by removing a plug 84, Fig. 7 (not shown), from the end of passage 51. In a modification the automatic back pressure release valve connecting the space G with the passage 51b, Fig. 9, is replaced by a capillary coil 104, Fig. 11, of such resistance as to allow a limited but continuous withdrawal of gas from space G simultaneously with the forcing of liquid from the space L. In this construction the evacuated insulation space between the vertical walls of the vessels 31a, 32a is charged with layers of heat reflecting metal foil spaced by layers of fibre glass whereas the top and bottom spaces are charged with silica powder. Also the vaporizing coil 52a is located between the top of the outer vessel 32a and a surrounding dome 107.
Patent GB-226275-A (GB)
Title: Improvements in or connected with edge filters or like apparatus
IPC: B01D29/15
Filed: 1923-09-18
Abstract: 226,275. Forsberg, E. A. Sept. 18, 1923. Filtering.-In a filter comprising a number of elements each consisting of a pile of laminae of paper or other non-porous material, the elements are removably supported in a casing to which the fluid under treatment is admitted and filtration takes place inwardly through the elements, means being provided for removing from the elements matter collecting on the outside thereof. Each pile of laminae 1 is compressed between end plates 2 connected by a fluted rod 3 which is formed at one end as a stud 4 to fit in a recess on the end plate 6 of the casing. At the other end a joint is made round an aperture leading into a delivery chamber 8 by means of a packing ring 10. The collected matter is scraped from the outside of the elements by an apertured plate 13 which is moved longitudinally by means of a threaded boss engaging with a screwed rotatable rod 15. The matter falls into the bottom 17 of the casing and may be discharged through a cock 18. Perforated tubes or external cages may. be used instead of the rods 3. The plate 13 may be replaced by brushes or devices in spiral form surrounding each unit. Such cleansing devices may be operated manually or by power.
Patent GB-774646-A (GB)
Title: Improvements in or relating to liquid electrical insulating compositions
Inventor: DAVID VERNON WARNER
IPC: H01B3/22
Filed: 1955-08-12
Abstract: A liquid dielectric composition, suitable for use in electrotechnical apparatus such as electrical cables, switches, transformers and capacitors, comprises a gas-evolving hydrocarbon electric insulating oil and sufficient of a cyclic olefin, having a vapour pressure greater than that of the oil, to render the oil gas-absorbing.  A test is described whereby it is ascertained whether an oil is gas-evolving or gasabsorbing.  The hydrocarbon insulating oil may be a highly refined substantially saturated oil or a petroleum distillate fraction which has been refined by solvent extraction and treatment with sulphuric acid and adsorbent earth and contains a proportion of aromatic hydrocarbons.  Cyclic olefins which may be employed are isobutyl cyclohexane, cyclo-octateraene, cyclopentadiene, hydrocarbon-substituted cyclopentadienes (e.g. the alkyl fulvenes obtainable by the alkali-catalysed condensation of aldehydes or ketones with cyclopentadiene, particularly dimethyl fulvene, methyl ethyl fulvene and methyl isobutyl fulvene), indene, hydrocarbon derivatives of indene in which the cyclopentadiene ring and/or the benzene ring is substituted with one or more alkyl groups and Diels-Alder adducts of cyclopentadiene with unsaturated hydrocarbons (e.g. the dimer and trimer of cyclopentadiene, the adduct of cyclopentadiene with fulvenes and the adduct of cyclopentadiene with acetylene or higher alkynes. The dielectric composition may also contain antioxidants (e.g. 2,6 - di-tert.-butyl-4 - methylphenol or 2,4 - dimethyl - 6 - tert. - butylphenol) and corrosion inhibitors (e.g. oil-soluble metal chelating compounds).  In the examples, dielectric compositions are described consisting of a refined petroleum distillate (but containing aromatic hydrocarbons) together with di-or tri-cyclopentadiene, indene or methyl isobutyl fulvene.
Patent GB-1074165-A (GB)
Title: Improvements in and relating to shives for casks and kegs
Inventor: DUFFIN LEONARD STANLEY
IPC: B65D39/00
Filed: 1965-06-01
Abstract: 1,074,165. Bunghole bushes; tapping casks; stoppers. SURE FORM PLASTICS Ltd. May 16, 1966 [June 1, 1965], No. 23369/65. Heading B8T. A plastics bung for a hole in a cask has a peripheral lip 6 to engage the outside of the cask wall and another lip 11 to engage the inside cask wall and another lip 11 to engage the inside of the cask wall, a flexible portion 10 of the bung permitting it to be driven into the hole. Radial ribs 7 connect the lip 6 to a central boss 8, the latter surrounding a weakened diaphragm 9 which can be pierced by a tap &c.
Patent GB-806103-A (GB)
Title: Improvements in or relating to magnesium base alloys
Inventor: WHITEHEAD DEREK JAMES
IPC: C22C23/00
Filed: 1956-07-30
Abstract: Magnesium alloys for use in the cast or wrought form have compositions in the following range in per cent by weight.  Th 1.0-8.0; Mn 0.15-1.0; Zr 0.05-0.5; Rare earth metals 0-2.0; Zn 0-0.4 Be 0-0.01; Pb 0-1.0; Mg the remainder.  The alloys may be solution heat-treated, e.g. for 2 hours at 565 DEG C., and precipitation hardened at 250 DEG C.  The alloys may be made by adding to molten magnesium zirconium in excess of that required followed by manganese, e.g. as an alloy of magnesium with 1.5 per cent manganese.  The manganese may be added in excess before the zirconium or the two may be added together as a master alloy prepared by co-reduction of ZrCl4 and MnCl2 by magnesium.  Specification 749,167 is referred to.
Patent GB-1147423-A (GB)
Title: Improvements in or relating to electroacoustic transducing apparatus
Inventor: ENOCK JOSEPH GUY
IPC: H04R19/01
Filed: 1966-05-25
Abstract: 1,147,423. Electrostatic loud - speakers. DECCA Ltd. 24 May, 1967 [25 May, 1966], No. 23443/66. Heading H4J. An electrostatic loud-speaker employing an electret has a source of energizing current arranged to apply to the electret an electric field of sufficient magnitude and duration to ensure the normal operation of the electret. An amplifier or radio receiver 10 applies an output signal to plates 13, 14 of an electrostatic loud-speaker 15 having an electret 16. A conductive layer 1 6a is sandwiched between two layers 16b, 16c of polyethylene terephthalate. When a switch 18 is closed, an electric supply source 17 triggers a timing circuit 19 which causes a generator 20 to generate for a few seconds a direct voltage which is applied across the two halves of the electret 16. If the electret 16 has only one plastics layer the voltage is applied between the layer 16a and the plate 13 or 14 on the other side of the plastics layer. Resistors 21, 22 avoid loss of signal from the apparatus 10 to the generator 20, which may form a short circuit to remove the voltage remaining after cessation of the polarizing voltage. A plurality of loud-speakers may be polarized simultaneously.
Patent GB-223229-A (GB)
IPC: F02B25/00
Filed: 1924-10-06
Abstract: 223,229. Morgan, A., (Assignee of Boehm, R.). Oct. 8, 1923, [Convention date]. Two-stroke-cycle engines; driving-gear.-Engines with independent pumps k, l for combustible mixture and scavenging air drive the pump pistons by connecting them to the main connecting rod d one on each side, as shown, the pump cylinders being placed with their open ends diverted towards the power cylinder.
Patent GB-1534254-A (GB)
Title: Ring binder
IPC: B42F13/22
Filed: 1977-06-03
Abstract: 1534254 Loose-leaf binders ETABS NICOLLET & CIE 3 June 1977 [18 June 1976] 23615/77 Heading B6E A loose-leaf binding mechanism comprising a pair of rings 4, 5; 6, 7, supported pivotally by articulated cranked rods 8, 10, Fig. 4, is provided with a locking mechanism which includes a plastics bolt 14 mounted slidably in a slot 21 of the cavity 1 and provided with a stepped wedge 18, Fig. 5, which in the closed position of of the rings is slid to overlie the rings and abut the inner wall of the casing thereby preventing the rings from moving into their open position.