baber/WOPTO huggingface dataset:
Patent GB-786127-A (GB)
Title: Removal of alkali metal catalyst residues from hydrocarbon polymers
IPC: C08C2/04
Filed: 1955-11-08
Abstract: Catalyst residues are removed from alkali metal catalysed conjugated diolefin polymers by contacting with clay containing 1 to 25 per cent of bound water.  Specified clays are attapulgus clay, "Super Filtrol" (Registered Trade Mark) and used cracking catalysts, e.g. silica and/or alumina gels.  They may be acid treated, e.g. with 10 per cent sulphuric acid.  The polymers, e.g. synthetic drying oils, may be prepared from butadiene, isoprene and 2,3-dimethyl butadiene, optionally together with myrcene, styrene, methyl styrene and vinyl naphthalene, at temperatures from 25 DEG  to 105 DEG  C. in the presence of inert hydrocarbon diluents, e.g. Varsol, ether modifiers, e.g. dioxane or diethyl ether, catalysts, e.g. sodium, potassium, lithium, caesium or rubidium, and activators, e.g. methanol, isopropanol or normal pentanol, either batchwise or in continuous processes.  The product may be passed through a filter or column containing the clay, or agitated with the clay and filtered, e.g. through a rotary-type filter. The product may be first filtered, settled or centrifuged to remove the bulk of the catalyst and then passed through clay-packed columns.  Alternatively a two-stage process may be employed using (1) clay containing 10 to 25 per cent water and 92) an acid-treated clay containing 1.5 to 2 per cent water. Specifications 704,607 and 718,577 are referred to.ALSO:Clays containing 1 to 25 per cent of bound water are used as filter media or filter aids in removing catalyst residues from alkali-metal-catalysed conjugated diolefin polymers.  Specified clays are attapulgus clay, "Super Filtrol" (Registered Trade Mark) and spent cracking catalysts such as silica and/or alumina gels.  They may be acid-treated, e.g., with 10 per cent sulphuric acid.  The polymers may be prepared in the presence of inert hydrocarbon diluents, e.g., Varsol, ether modifiers, e.g., dioxane or diethyl ether, catalysts, e.g. sodium, potassium lithium, caesium or rubidium, and activators, e.g., methanol, isopropanol and normal pentanol.  The product may be passed through a filter or column containing the clay, or agitated with the clay and filtered, e.g. through a rotary type filter.  The product may first be filtered, settled or centrifuged to remove the bulk of the catalyst and then passed through a clay-packed column. Alternatively a two stage process may be employed using (1) clay containing 10 to 25 per cent of water and (2) an acid-treated clay containing 1,5 to 2 per cent of water.  Specifications 704,607 and 718,577 [both in Group IV(a)] are referred to.
Patent GB-269228-A (GB)
Title: Improvements relating to the inking mechanism of planographic rotary printing machines
IPC: B41F31/00
Filed: 1925-12-17
Abstract: 269,228. Evans, A. B. Dec. 17, 1925. Inking-apparatus; rotary machines. - The printing-surfaces a<1>, a<2> of a planographic cylinder a are inked in different colours by rubber blankets b<1>, b<3> on cylinders b, b<2>, the blankets b<1>, b<3> receiving their ink from steel distributing-rollers c coacting with similar rollers d, and leather or composition rollers e supplied in known manner from a duct. The rollers c are preferably reciprocated axially from the drums b, b<2> by means of mechanism as in Specification 116,533. One of the cylinders b, b<2> may be omitted for printing in a single colour.
Patent GB-1197745-A (GB)
Title: Improvements in or relating to Condition Responsive Apparatus.
IPC: G01L11/00
Filed: 1967-07-12
Abstract: 1,197,745. Fluid-pressure servomotor systems. DRESSER INDUSTRIES Inc. July 12, 1967 [July 18, 1966], No. 32048/67. Heading G3P. An apparatus responding to a change in a variable, such as fluid pressure, temperature, fluid flow, motion or weight, has a device 12 adapted for bi-directional movement from a null position in response to the variable condition, a pneumatically operated sensing device 15 providing a first signal in response to movement of the control device in one direction from the null position and a different signal in response to movement of the control device in a different direction from the null position, a bi-directional drive mechanism 36 actuated by the sensing device, a feedback mechanism 48, 49, 44 and 42 to return the device 12 to the null position, and a readout mechanism 51 actuated by the drive mechanism. The device 12 consists of a vane member connected to a Bourdon tube 13 by a lever arm 14 to regulate the flow between pairs of aligned nozzles 16, 21 and hence the pressure applied to diaphragms 27, 28 which hold valve members 31, 32 closed against spring pressure. When vane movement allows one of the valves to open the drive mechanism is rotated to actuate the mechanism 51 and a pen 54 in contact with a travelling paper strip 55 brought into periodic contact with raised digital wheels 57 on a printing counter 52. At the same time, a lead screw 44 for actuating the pen applies feedback through a spring 42 to the Bourdon tube 13. In the first modification, the mechanism 36 actuates a valve, rheostat or switch assembly through a drive comprising a spring, belt, a pulley and a differential gear which is also connected to a manually set reference counter. A second modification, uses a lever adjustably connected to the vane 12 and the feedback spring, the lever being actuated by a pair of membranes responding to the pressure drop across a flow restrictor. The sensing device 15 may be replaced by pneumatic volume relays 119, 121, Fig. 6 controlled by flow restrictors 117, 118 in the supply line to a single pair of nozzles 112, 113 between which the vane member 124 may be moved longitudinally by the Bourdon tube 13.
Patent GB-401887-A (GB)
Title: Manufacture of tetrazoles
Filed: 1932-11-14
Abstract: Tetrazoles are prepared by (1) interaction of an azide with a compound of sulphoperamidic acid with a hydrocyclic ketone or the components of the compound, (2) sulphonating a hydrocyclic ketoxime and simultaneously or subsequently treating the resulting sulphoperamidic acid compound with an azide.  According to the examples, (1) the potassium salt of the sulphoperamidic acid compound of cyclohexanone is heated in aqueous solution with sodium azide and the resulting pentamethylenetetrazole extracted with benzene; (2) fuming sulphuric acid or chlorsulphonic acid is added dropwise to sodium azide suspended in chloroform and cyclohexanone-oxime then added; on heating, pentamethylenetetrazole is obtained. Hexamethylenetetrazole and tetramethylene-tetrazole may be similarly prepared. Specifications 250,897, 252,460, 257,418, 280,529, 285,080 and 287,924, [all in Class 2(iii), Dyes, &c.], are referred to. Sulphoperamidic acid compounds of hydrocyclic ketones are prepared by interaction of the ketone and acid in equimolenilar proportions at a temperature of 0 DEG --5 DEG C. in acid, neutral or alkaline solution.  When alkalies are present, the corresponding salts are formed.
Patent GB-993418-A (GB)
Title: Apparatus for handling filamentary tow
IPC: B65H51/10
Filed: 1961-09-07
Abstract: 993, 418. Delivering fibre tows. EASTMAN KODAK CO. Sept. 7, 1961 [Sept. 12, 1960], No. 32151/61. Heading D1D.  Tows are forwarded by rollers that rotate at the same speed and provide two nips, the rollers forming the second nip being spaced farther apart than those forming the first nip. Such an arrangement may, it is stated, reduce the development of static charges in crimped continuous filament tows by permitting the tow between the nips to slip by approximately 5%. In order to vary the nip sizes the rollers 13, 14, 15 may be adjustably mounted.
Patent GB-259530-A (GB)
Title: Improvements in or relating to reciprocating piston engines
IPC: F02B75/22
Filed: 1925-12-21
Abstract: 259,530. Ostberg, K. G. Oct. 6, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Driving-gear; casings; linkwork.-In an internal-combustion or other engine the piston is connected to the crank-shaft through lazytongs mechanism comprising two or more quadrangles. The crank-shaft has two cranks 6 at the same angle. The lower end of the tongs is pivoted on the crank-shaft between the cranks, or, alternatively, on a separate shaft. The two connecting-rods 7 are connected to the ends of a pin 8 forming the upper pivot of the lowest quadrangle. All the links consist of a series of plates, the plate of opposite sides of the tongs being alternately arranged and interleaving with one another. The plates 10 and 11 on the pin 8 form sides both of the lowest and of the next quadrangle. Each of the outer plates 10, 11 is partially split longitudinally at 19 and engages grooves in the pivot pins 16. The crank-chamber is formed by a prolongation of the cylinder and is closed by a cap 4, which secures the crankshaft. Crank webs are dispensed with, the crank pins being connected to the crank shaft only by the segmental areas of overlap.
Patent GB-779278-A (GB)
Title: Improvements in the production of hollow profiles from thermoplastic synthetic materials
IPC: B29C48/12
Filed: 1954-11-08
Abstract: Railings for fencing comprise hollow metal tubes, preferably polygonal covered with polyvinylchloride or other synthetic resin. The resin is moulded over the tube by extrusion (see Group V) and is formed with longitudinally extending ribs or fins.  The metal core may include parts to take screws or nails.
Patent GB-520986-A (GB)
Title: Improvements in or relating to bodies for motor or other vehicles
IPC: B62D23/00
Filed: 1938-11-07
Abstract: 520,986. Vehicle bodies. ASTON MARTIN, Ltd., and HILL, C. Nov. 7, 1938, Nos. 32268/38 and 9921/39. [Class 108 (i)] In a body for a motor or other vehicle composed of panelling supported on a tubular frame in which the supporting tubes do not conform strictly to the curvature of the panelling, but are spaced away from the panelling at intervals, and by varying amounts, auxiliary supporting means are provided for the panelling where it is spaced away from the tubes, the auxiliary supporting means conforming to the curvature of the panelling and being attached to the tubular frame. A solid drawn square-section tube 8 supports panelling 12 where it is spaced away from it by a felt or rubber strip 16 secured to a flange 15 of a former strip 13 secured to the tube. Where a double curvature exists two former strips 17, 18 may be used. Alternatively, the edge of a former strip 22, which is thick and of light metal, may support a strip 33 of channel or T-section of rubber, soft metal, or other pliable or resilient material. Where tubes occur at the edges of panels the latter are bent over the side face of the tube and secured by self-tapping screws.
Patent GB-362606-A (GB)
Title: Improvements in or relating to stoppers
IPC: G01F11/26
Filed: 1930-10-28
Abstract: 362,606. Measures of capacity. GARDNER, R. W., Grange House, Upton Park, Chester. Oct. 28, 1930, No. 32327. [Class 106 (v).] A hollow stopper 10, of the type having a measuring chamber incorporated therewith and extending transversely thereof, for bottles &c., is formed so that the upper and lower walls 12, 15 of the measuring chamber are parallel with the top of the stopper. The measuring chamber is filled by tilting the bottle &c. with the stopper attached and then righting it again, the stopper being then detached and the contents of the chamber poured out. The stopper may be made as a unit by casting in glass or metal, or the measuring chamber may be provided with a separate detachable lid. In the modification of Fig. 5 the chamber is limited by a separate cylindrical member 23 placed within the stopper.
Patent GB-1066956-A (GB)
Title: Improvements in or relating to transistor amplifiers
Inventor: TIBBLE DAVID VEAR
IPC: H03F3/26
Filed: 1964-08-10
Abstract: 1,066,956. F.R. amplifiers. MINISTER OF AVIATION. Aug. 10, 1965 [Aug. 10. 1964], No. 32417/64. Heading H3T.  An R.F. amplifier has two junction transistors Q1, Q2 fed with push-pull signals on their bases and having similar collector loads R7, R8, the emitters being supplied through similar constant-current sources R5, R6 and being joined by a path C4 of low impedance to A.C. Noise generated in the constant-current sources is thus balanced out. A subsequent stage Q3, Q4 feeds a push-pull output transformer T. NPN transistors may be used instead of PNP, and Q1 and Q2 may be super-alpha pairs. Alternatively, the emitter/collector paths of further transistors may be inserted between Q1-Q3 and Q2-Q4. The constant-current sources represented by resistors R5, R6, R10, R11 may alternatively be transistors or diodes. Feedback may be applied from the emitters of Q3 and Q4 to the emitters of Q1 and Q2 respectively. The amplifier can be used to connect an aperiodic aerial, e.g. a screened loop, to a coaxial feeder.
Patent GB-489749-A (GB)
Title: An improved method of and apparatus for drying leather
IPC: F26B9/06
Filed: 1937-11-25
Abstract: 489,749. Drying leather. JOHNSON, G. W. (Proctor & Schwartz, Inc.) Nov. 25, 1937, No. 32549. [Class 76] [Also in Group XIII] Wet leather is dried prior to finishing by supporting it in a stretched condition and impinging jets of drying air at relatively closely spaced points over its entire surface. In the apparatus shown, pieces of leather are stretched on frames comprising plates 20, having perforations 20a for the attachment of stretching toggles, and outer frame members 21, 24. The frames are positioned within a chamber 1 between pairs of vertical perforated partitions 15 inclined to one another as shown. Air is caused to pass through the partitions 15, e.g. by means of a fan 10, and returns to an air conditioning chamber 2 containing heating or cooling units 6, 7 by way of upper and lower circulating chambers 4, 5. The frames are carried by tracks 26 to enable them to be run into and out of the drying chamber and carry plates 27 to close the openings in the casing.
Patent GB-825994-A (GB)
Title: Improvements in fluid-operated actuators
IPC: F15B11/076
Filed: 1957-10-18
Abstract: 825,994. Dashpots. GENERAL DYNAMICS CORPORATION. Oct. 18, 1957 [Oct. 19, 1956], No. 32575/57. Class 108(3) [Also in Group XXVIII] Damping of a thrust piston 60 which is subjected to a sudden controlled acceleration during the initial position of its stroke is effected by abturating by means of a conical sleeve 76 surrounding and secured to the piston rod 25 on aperture 78 in a transverse plate 75 in that position 21 of cylinder, through which the rod 25 passes and thereby restricting flow of oil 77 through the aperture 78 as the piston nears the end of its stroke. The piston 60 in its retracted position is sealed by a ring 65 against a second transverse plate 45 having an aperture 28 through which projects a conical extension 61 of the piston and on transmitting pressure from a pneumatic piston 62 through oil 63 in cylinder space 22a sufficient to break the seal 65 and thus allow access of pressure to the whole of the piston, the latter is given a quick acceleration until the damping member 76 assisted by a second damping element 67 take effect. The degree of acceleration is determined by the contour of the projection 61, various forms of which are described.
Patent GB-1157805-A (GB)
Title: Improvements in or relating to Circuit Elements especially for use as Scanning Coils
Inventor: BULL ERIC WILLIAM
IPC: H01J29/76
Filed: 1965-07-30
Abstract: 1,157,805. Making scanning coils. ELECTRIC & MUSICAL INDUSTRIES Ltd. 7 July, 1966 [30 July, 1965], No. 32578/65. Heading B3A. [Also in Divisions H1 and H2] A coil comprises a flexible base supporting two overlapping and mutually insulated conductive patterns, each pattern comprising a repetitive longitudinally extending rectangular waveform, one pattern being displaced relative to the other so that the longitudinal parts of the respective waveforms are staggered, the base being rolled to conform to a surface of revolution. As shown, Fig. 3, a scanning coil for a television pick-up or image reproducing tube comprises a strip 1 of flexible insulating material on opposite sides of which are formed patterns of "printed" conductors 2. The pattern on the upper surface comprises the rectangular waveform indicated by the full lines, and the pattern on the lower surface comprises a similar waveform displaced longitudinally as indicated by the broken lines. The conductors of the two patterns are interconnected at the points marked 3 and provided with input terminals 4 to form a plurality of virtual, alternately poled, coils. The strip is then wound into a cylinder with the points X and Y in register to form a pair of saddle coils. The turns of the wound strip are insulated from one another either by coating with insulating material before winding or by interleaving a strip of insulating material. The length of each successive cycle of the waveform may be increased to compensate for the increase in circumference of the cylinder as the winding proceeds. Locating holes may be provided to aid registration of the turns of the coil. A single insulating strip may be provided with two sets of conductors arranged to form the line and field deflection coils for a C.R.T. Electrostatic screens may be provided between the tube and coils, and/or between the sets of coils, by printed areas on the strip. The strip may be arcuate so that when wound it forms a conical coil. The base may consist of more than one layer of insulating material and the coils may be used for resolvers and motors.
Patent GB-1474053-A (GB)
Title: Braking circuit for use with phase synchronizing circuitry
IPC: H04N1/36
Filed: 1974-07-23
Abstract: 1474053 Synchronizing facsimile machines FUJI XEROX CO Ltd 23 July 1974 [17 Aug 1973] 32582/74 Heading H2L An arrangement for synchronizing a facsimile receiver drum in an information transmission system where the receiver drum driving motor is repeatedly supplied with a direct current voltage to provide braking during an allowable synchronizing period. The motor may also be supplied with a reduced frequency signal following the braking voltage. As shown, a reception phase signal will, during the synchronizing time of typically 15 sees., cause the synchronizer U1 to output a reduced frequency and also through the arrangement of gates cause monostable multivibrator U7 to produce a 15 ms. pulse which is applied as D.C. to lines # 1 , # 2 . When the monostable relapses the lines will be supplied with the reduced frequency until a transmission phase signal is received which will restore the synchronizer output to the operating frequency. If the transmission phase pulse occurs before the monostable has timed out there will be no period of reduced frequency produced.
Patent GB-1176357-A (GB)
Title: Improvements in the Conversion of Films into Separate Oriented Filaments
IPC: B29C48/12
Filed: 1967-07-17
Abstract: 1,176,357. Converting films into filaments by fibrillation. BARMAG BARMER MASCHINENFABRIK A.G. 17 July, 1967 [1 April, 1967; 21 April, 1967], No. 32724/67. Heading B5B. Filaments are produced by melt extruding a synthetic thermoplastic organic polymeric material such as a polyolefine, a polyamide, a polyester or a polyvinyl chloride to form a film web having closely spaced continuous ribs or thicker portions extending along the length of the film web, the ribs having cross-sections which are constant along their length and pairs of adjacent ribs being connected to one another by narrow continuous thinner portions of the film web extending along the length of the film web, stretching the film longitudinally immediately after or on leaving the extrusion die to at least twice its original length, cooling the stretched film to solidify it and stretching the solidified film longitudinally (optionally at an elevated temperature) at a stretch ratio sufficiently high to orient the film web longitudinally and to cause the film web to split spontaneously along its thinner longitudinal portions into parallel filaments without film web being subjected to any mechanical treatment other than stretching. The cross-section of the orifice of the extrusion die in a plane at right-angles to the direction of extrusion may have the shape shown in Figs. 5 to 11, and 15 to 20 and the transverse sections of the film web may be as shown in Figs. 12 to 14, 21 and 22. The freshly extruded film web may be drawn at a stretch ratio of not less than 2 and preferably 5 to 20 before being cooled and solidified. The solidified film may be stretched at a stretch ratio of not less than two in a stretching zone which is maintained at an elevated temperature. The film web may be subjected to preliminary cooling, e.g. by directing a stream of cooling air on to it, during its passage from the extrusion die to the cooling rolls or cooling bath. Two or more polymeric materials differing from one another in colour and a polymer composition may be melt extruded simultaneously from the extrusion head in such a manner that a laminated film is formed.
Patent GB-748633-A (GB)
Title: Lubricant composition
IPC: C10M145/16
Filed: 1953-11-26
Abstract: An oil-soluble copolymer comprises monomer units of (A) a compound having an ethylenic linkage and a group of from 4 to 30 aliphatic carbon atoms, and (B) a nitrogenous derivative of an unsaturated dicarboxylic acid wherein at least one carbonyl carbon atom is linked as an amide or amine salt to a nitrogen atom which is attached to an organic radical substituted by at least one hydroxy, nitro, mercapto or amino group, said units being in the ratio of 1 to 15 of (A) to 1 of (B).  The nitrogenous monomer (A) is preferably derived from acids such as maleic, fumaric and citraconic and a list of derivatives is given, e.g. maleamides, maleamates, substituted maleamic acids and salts of maleic acid. Lists of suitable monomers (B) include olefins, ethers and esters but preferably an alkyl ester of an olefinic mono- or di-carboxylic acid is used.  The copolymers may be prepared by copolymerization of suitable components or alternatively the essential groups specified under (A) and (B) may be introduced by after-treatment, e.g. by esterification of acidic groups in a copolymer with lauryl alcohol, ethyl hexanol or pentaerythritol, and/or by treatment of an acidic copolymer with ethanolamine or diethanolamine to give an amide, or with dihydroxy ethylene diamine or N-(2,3-dihydroxypropyl) aniline to give an amine salt. In addition any remaining carboxyl groups may be converted to cyano, ester or amido, e.g. by reaction with polyhydric alcohols. Copolymers containing 3 or more different monomer units may be obtained. Polymerization may be effected in bulk, emulsion or solution and monomer (see example 8), catalyst and solvent may be added incrementally.  Solvents disclosed are benzene, toluene, xylene and petroleum naphtha and the catalyst may be benzoyl, acetyl, di-t.-butyl, di-t.-amyl or dibenzoyl peroxide; t.-butyl hydroperoxide; a ,a 1-azodiisobutyronitrile or 1,11-azodicyclohexanecarbonitrile.  The products exhibit detergent and antiwear properties in combination with a variety of specified natural or synthetic oils which may also contain the usual lubricant additives (see Group III).ALSO:Lubricating oil compositions contain a copolymer comprising monomer units of (A) a compound having an ethylenic linkage and a group of from 4 to 30 aliphatic carbon atoms, and (B) a nitrogenous derivative of an unsaturated dicarboxylic acid wherein at least one carbonyl carbon atom is linked as an amide or amine salt to a nitrogen atom which is attached to an organic radical substituted by at least one hydroxy, nitro, mercapto or amino group, said units being in the ratio of 1 to 15 of (A) to 1 of (B) (see Group IV(a).  Oils specified are refined paraffin or naphthenic base oils, alkylated waxes or other hydrocarbons, hydrogenated hydrocarbon polymers, condensation products of chlorinated alkyl hydrocarbons with aryl compounds, propylene or ethylene oxide polymers and esters thereof, di (2-ethylhexyl) sebacate, tricresyl phosphate and silicate esters.  Other lubricant additives may also be present.