baber/WOPTO huggingface dataset:
Patent GB-1273981-A (GB)
Title: Improvements in and relating to pickup arms
Inventor: ROBERTSON-AIKMAN ALASTAIR JOHN
IPC: G11B3/20
Filed: 1968-03-19
Abstract: 1,273,981. Gramophone pick up arm assembly. A. J. ROBERTSON-AIKMAN. 19 March, 1969 [19 March, 1968; 7 Aug., 1968], Nos. 13318/68 and 37756/68. Heading G5R. In a gramophone pick up assembly, adjustment of the playing weight of the pick up automatically adjusts the force applied to compensate for the side thrust applied to the pick up stylus by the record groove. The assembly includes a base-plate 10 which can be secured in a support plate 13 on motor board 16 by pegs 14 and incorporates a sliding bush 11 forming a bearing for a main support pillar 12. The pillar supports a head arrangement 20 having a cross-shaft bearing sleeve 21 mounted at one end at an angle to base-plate 10 and this sleeve carries a hollow cross-shaft 22 mounted in bearings 23. At one end the shaft carries the weight assembly 61, 22 and at its other a U-shaped member 26 which pivotally supports part 31 of pick up arm 30. Initially the weight of the pick up head and arm is completely balanced out by counterweight 41 and the arm is balanced transversely by milled ring 46 having part of its periphery weighted. The playing weight is then set by weight assembly 61, 62 and because the pick up arm is pivoted at an angle to the vertical the weight assembly provides a component, always proportional to playing weight, which acts to oppose the side thrust applied to the stylus by the record. The proportionality is adjusted by varying the angle between the shaft 22 and the base-plate. The pick up arm is cranked and is formed as a two part assembly in which a part 51 carrying head 54 is coupled to the pivoted octagonal part 31 by an electrical and mechanical coupling 52, 53. The height of the arm and the distance between its vertical pivot axis and the centre of the turntable is adjustable.
Patent GB-1324457-A (GB)
Title: Valve casing comprising two forged portions which are welded together
IPC: F16K27/10
Filed: 1971-08-12
Abstract: 1324457 Welding by fusion; making valves E VOGT 12 Aug 1971 [3 Sept 1970] 37829/71 Addition to 1154628 Headings B3A and B3R [Also in Division F2] The valve casing described in Specification 1,154,628 is modified in that the lower surface of the transverse rib 5 in the upper portion 3 of the casing is located above the longitudinal welding plane between the casing portions 3, 4 which plane contains the top surface of the rib 6. The valve seat carrier ring 7 thus has a lower surface which slopes downward from the rib 5 to the rib 6. This construction allows easier electron beam welding of the casing portions.
Patent GB-1084772-A (GB)
Title: Weaving knotted pile fabrics
IPC: D03D39/02
Filed: 1964-09-17
Abstract: 1,084,772. Weaving pile fabrics. BERGEDORFER EISENWERK G.m.b.H. ASTRA WERKE, S.S.C. FLEISCHER, C. C. THOMSEN and P. DURRSCHMIDT. Sept. 17, 1964 [Sept. 17, 1963], No. 38100/64. Heading D1E. In a method of weaving knotted tuft pile fabrics, such as carpets, in which the tufts are inserted by pairs of grippers 1, 2 which are guided between crossed warp threads a, b to grip and pull through the ends of tufts 3 from suitable holders, a weft is inserted in the same loom cycle. The grippers are inserted close to the reed but after gripping the tufts move towards the; fell whilst pulling the tufts through the warps to allow the insertion of the weft which is then beaten-up against the tufts. During the insertion of the grippers through the warps the tension of the warps is reduced by a let-off motion of the back rests. The weft is maintained tensioned by a device pressing it against the slay or by an air jet and controls a stop-motion of the loom through a micro-switch. During beat-up the fabric is moved towards the slay by a let-off of the take up.
Patent GB-1475810-A (GB)
Title: Testing an electrical supply installation
IPC: G01R31/26
Filed: 1974-08-30
Abstract: 1475810 Testing a D.C. supply system SIEMENS AG 30 Aug 1974 [31 Aug 1973] 38106/74 Heading G1U The diodes in a D.C. supply system in which bus-bars P', N', Fig. 1, are each connected to supply terminals P,N, by pairs of diodes 5,6 and 7,8 respectively, each diode being capable of carrying the full load current, are tested one by one by (a) disconnecting the diode under test from its supply terminal, for example for diode 8 switch 9 is opened, (b) by connecting the disconnected diode via an ammeter 11 to the other supply terminal thereby to apply a reverse bias across the diode, this being effected by a switch 10 for diode 8, and (c) then checking whether the reverse current as indicated on the ammeter is sufficiently small. The test circuit shown also includes a voltmeter 12 to indicate the actual reverse bias applied to the diode 8 under test, and a resistor 14 which may be switched into circuit to cause a reference current to flow through the ammeter so that it can be calibrated. In a practical installation, Fig. 2 (not shown), a switch 9 would be installed in each of the supply lines 1, 2, 3, 4 together with fuses, and the test equipment would be mounted in a unit which could be connected to test any one of the diodes by appropriate plugs and sockets.
Patent GB-340952-A (GB)
Title: Improvements in or relating to sewing machines for boots and shoes
IPC: D05B15/00
Filed: 1929-10-01
Abstract: 340,952. Sewing-machines. HANSEN, J. B., 13, Maagevej, Copenhagen. Oct. 1, 1929, No. 38230/30. Divided on 340,539. [Class 112.] Feed.-In a bootsole sewing-machine the feed pawl 22 is pivoted at 21 on a bell-crank lever 19 which is actuated by a rod 17. An arm 23 is fixed on the spindle of the pawl 22 and carries a roller engaging a fixed fork 24 so that the pawl is guided in its feeding movement but is free on,its return stroke.
Patent GB-991486-A (GB)
Title: Bituminous mixtures
IPC: C08L95/00
Filed: 1962-10-09
Abstract: A bituminous composition is prepared by coating coarse stones of a diameter of 50-600 mm. and weighing up to 80 kg. with an asphaltic mortar, i.e. a mixture of any bituminous material with stones of less than 50 mm. diameter, sand, and/or filler, at a temperature of 60-180 DEG  C., preferably 100-140 DEG  C.  The coarse stones are graded in the proportion of 2-3 parts of stones of a diameter of 200-600 mm. to 1 of stones of a diameter of 50-200 mm.  The coarse stones may be dried and coated with bitumen before mixing with the mortar which is in such an amount as to fill the voids in the stones.  The mixture may be filled into a mould, preferably in the form of a truncated pyramid, and there allowed to cool to 90 DEG  C. or below before placing in position.
Patent GB-923119-A (GB)
Title: Means for attaching section rails to structural members
Inventor: MITCHELL DENNIS SYDNEY BARNES
IPC: E04B9/12
Filed: 1958-11-28
Abstract: 923,119. Releasable fastenings. TENTEST CO. Ltd. Nov. 30, 1959 [Nov. 28, 1958], No. 38535/58. Addition to 868,490. Class 44. A section rail 1 is supported from a structural member by means comprising a clip 4 having opposed marginal portions separated by an intermediate portion said marginal portions being divided into parts intermediate their length by pairs of opposed slots 5, said parts being disposed in planes parallel to the intermediate portion so as to support co-planar flanges 6 of the rail received in said slots. The clip indicated at 24 embodies one pair of opposed slots 5 engaging the flanges 26 of a rail, connection between this clip and the rail 1 being effected through a flange 27.
Patent GB-1059522-A (GB)
Title: Improvements relating to metal filled plastics
IPC: H05B3/14
Filed: 1963-10-01
Abstract: Electrically conductive plastic compositions comprise a compressible plastic matrix holding in electrical particle to particle contact 35 to 80% by volume of solid metal particles of surface area 450 to 200,000 square feet per cubic foot and an average particle size of 0.5 to 100 mils when the particles have a noble metal surface and 5 to 100 mils in the case of other metal particles.  Specified plastics are polyvinyl chloride, polyamides, polyurethanes and silicone resins.  The metal particles may be of nickel, lead, zinc, cadmium, copper, tin-lead solder, brass, silver or gold, or particles of the above non-noble metals coated with silver or gold.  In examples a polyvinyl chloride plastisol is mixed with (I) silver coated copper particles, (II) silver-copper coated iron particles, (IV and VIII) copper particles and (V) nickel particles; a silicone resin is mixed with (III) silver coated copper particles; and (IX) a solution of a polyamide resin in toluene and ethanol is mixed with silver coated copper particles and the solvent evaporated. The compositions may be used to form gaskets and seals for wave guide assemblies and weather-tight R.F. enclosures.
Patent GB-1149773-A (GB)
Title: Process for the production of vulcanisates having high tear resistance based on polybutadiene
IPC: C08L9/00
Filed: 1966-08-31
Abstract: 1,149,773. Compositions based on polybutadiene. CHEMISCHE WERKE HœLS A.G. 31 Aug., 1966 [1 Sept., 1965], No. 38816/66. Heading C3P. Polybutadiene or a blend containing polybutadiene has added to it 1 to 30% by weight of a copolymer of butadiene or isoprene and an unsaturated carboxylic acid having 3-to 10 carbon atoms, which copolymer has 1 to 20 carboxyl groups per hundred chain carbon atoms, at least 30% of the total number of carboxyl groups being neutralized, and the resultant mixture is vulcanized. The preferred copolymer is a copolymer of butadiene and acrylic acid.
Patent GB-944935-A (GB)
Title: Process for the production of pure ª -olefines
IPC: C07C1/32
Filed: 1960-11-11
Abstract: 944,935. Olefins. K. ZIEGLER. Nov. 11, 1960 [Jan. 30, 1960], No. 38856/60. Addition to 908,032. Drawings to Specification. Heading C5E. Alpha-olefins are obtained by displacement from an aluminium alkyl compound with an olefin R<11>CH=CH2 where R<11> is hydrogen or alkyl at 200-340‹ C. with a residence time of 01.-10 seconds, the aluminium alkyl compound being (a) AlR3, (b) R2AlH, (c) a mixture of (a) or (b) and AlR2X (X=halogen) or a complex thereof with a potassium halide or (d) a mixture of (a) or (b) and AIR2Y (Y=-OR or -SR) in which R is an alkyl group of at least two carbon atoms; the subject-matter of the parent Specification is disclaimed. Suitable pressures are 2-20 atmospheres with a mol. ratio of olefin to aluminium alkyl of 5-100 : 1, using the apparatus described in the parent Specification. Examples describe the displacement of alkyl groups as olefins from (1) a tri- C5-C17-alkyl aluminium growth product with propylene; (2) di-isobutyl aluminium hydride with propylene ; (4) triethyl aluminium with propylene; (5) tripropyl aluminium with 1-decene; (6) a tri-C4-C16-alkyl aluminium growth product from triethyl aluminium with 1-octadecene; (7) a synthesis product having the average composition KAl[(C2H4)2.1C2H5]2Cl2 with ethylene. Specifications 868,040, 888,352, and 903,053 also are referred to.
Patent GB-1163549-A (GB)
Title: Propellers for Marine Vessels, Land Vehicles and Aircraft
Inventor: LEVY FELIX
IPC: B64C11/00
Filed: 1967-08-23
Abstract: 1,163,549. Propellers for marine vessels, land vehicles and aircraft. F. LEVY. 23 Aug., 1967 [25 Aug., 1966; 7 July, 1967], No. 38863/67. Heading B7V. A propeller for a marine vessel comprises a rotor 1, Fig. 1, which includes a hollow cylinder 2 supported by ball bearings 9, 10 and having a pair of helical blades 4, 5, Fig. 3, internally thereof, the pitch of said blades being non- uniform (as shown) and the rotor being driven through gears 16, 17 to effect axial flow of the water of flotation from an inlet passage 13 to an outlet passage 14 containing flow-straightening vanes or blades 15 so that two propulsive thrusts P, P<SP>1</SP> are effected by the rotor and the blades 15, respectively. The blades 4, 5 are tangentially connected to each other and effect both centrifugal and centripetal actions 7, 8. The trailing ends of the rotor blades and the leading ends of the flow-straightening blades may be modified with regard to their shapes, Figs. 6 to 8 (not shown); and the rotor may be furnished with a shaft either end thereof, each shaft being supported by a respective bearing (34 or 35). The shaft at the leading end of the rotor may be coupled to a driving shaft. Alternatively, the rotor driven through bevel gears (28), Fig. 5 (not shown), which are adjacent the flow-straightening blades. The embodiment shown in Fig. 9 is intended to effect propulsion of a land vehicle or aircraft, the rotor 45 being such that it produces both axial and radial flow of air towards flowstraightening blades 49. Additional blades (50), Fig. 11 (not shown), are lodged between the rotor blades 46 at the trailing end of the rotor. The propeller according to this embodiment may be used to effect propulsion of a marine vessel.
Patent GB-824519-A (GB)
Title: Improvements in or relating to the dyeing of hair and other keratinous materials
IPC: D06P3/30
Filed: 1957-12-13
Abstract: Keratinous materials such as hair, wool, furs, bristles, feathers, animal pelts and skins are dyed by applying an aqueous solution of 1 : 2 : 4-trihydroxy-benzene or a derivative thereof substituted in the 5-position by, for example, a methyl or chloro radical, at a pH of at most 7, and then applying an aqueous solution containing ammonia and an oxidizing agent such as hydrogen peroxide, an alkali metal perborate or hypochlorite, chlorinated lime, sodium - N-chloro-p-toluenesulphonamide or an addition complex of hydrogen peroxide and urea.  In the second solution, ammonia may be liberated in situ from an ammonium salt of a weak acid, such as ammonium carbonate, carbamate, acetate, borate or orthophosphate, together with, when necessary, a substance capable of liberating ammonia from the salt such as an alkali metal carbonate, sodium orthophosphate, lime or magnesia. The first solution may contain, in addition, acetic acid, other colouring matters and reducing agents.  The second solution may also contain an electrolyte such as sodium chloride or sulphate. Both solutions may contain hair-swelling agents such as alcohols, lathering and thickening agents.  Numerous examples are given. Specification 710,134 is referred to.
Patent GB-966080-A (GB)
Title: Improvements in tools for obtaining a percussive force
Inventor: GUTTENTAG KARL HEINZ
IPC: B25D17/00
Filed: 1959-11-17
Abstract: 966,080. Percussive tools. B.S.A. GUNS Ltd. Feb. 16, 1961 [Nov. 17, 1959], No. 38949/59. Heading B4C. In a tool driven from a rotary driving source, and comprising a body 10, a drive shaft 12a adapted to be secured to the source, a rotary hammer 17 having limited axial movement driven by the shaft, a cam 18 reciprocating the hammer, a spring 20 biasing the hammer away from the drive shaft, and an anvil 22 on a shaft 21 adapted to carry a tool, the cam is so shaped that the hammer is released suddenly when the spring is fully loaded. The shaft 21 carries a chuck 23 and the shaft 12a is engaged by the chuck of an electric hand drill. The shaft 21 may be given a part rotation by a spring-loaded plunger or plungers in the hammer engaging a recess or recesses in the anvil.
Patent GB-934966-A (GB)
Title: Improvements in or relating to collagen fibres
IPC: C09H1/04
Filed: 1960-10-31
Abstract: An aggregated collagen fibre mass, such as cattle hide, is rendered susceptible to easy mechanical disaggregation by treatment with hydrazine or hydroxylamine, preferably in aqueous solution.
Patent GB-838700-A (GB)
Title: Improvements in or relating to fluid valve assemblies
IPC: F15B13/06
Filed: 1958-12-04
Abstract: 838,700. Steering motor vehicles. GENERAL MOTORS CORPORATION. Dec. 4, 1958 [Dec. 23, 1957], No. 39125/58. Class 79(5) [Also in Group XXIX] A fluid valve assembly for the hydraulic steering system of a tractor-earth scraper combination comprises a valve member 80 which controls the fluid flow between an inlet port 36 and one or two outlet ports 90, 92 connectible to a pump 22 and pressure-operable apparatus (e.g. jacks) 16, 18 respectively, and a by-pass valve 62 which has an outlet port 98 connectible to the pump inlet and is responsive to the pressure difference between the inlet port 36 and the outlet ports 90, 92 to maintain a certain pressure difference therebetween whereby the rate of flow through the ports is substantially independent of the pressure variations at the outlet port. The inlet port 36 communicates by means of an inlet chamber 34, a valve 56, which is normally closed by a spring 58, and a passage 54 with a port 88 connectible to one or other of the outlet ports 90, 92 by axial movement of the valve member 80, which is attached to the steering control and has a device 86 normally urging it towards a central position, and the other port being connected by a passage 94 or 96 to an exhaust chamber 38 having a port 40 leading to a tank 20. The ports 90, 92 are so connected to the hydraulic jacks 16, 18 that as one jack is extended, the other is retracted to articulate the tractor and earth scraper relatively to one another. The pressure in the inlet chamber 34 acts on the face of the by-pass valve 62 which moves against a spring 74 to vary the flow of fluid through a passage 60 leading to a port 98 which, in the central position of the valve member 80, is connected by passages 96, 104 to the outlet chamber 38, at extreme positions of the valve member, lands 112, 114, 116 close the port to prevent fluid flow through the bypass valve. The valve member 80 also has internal passages 118, 120 which, when it is moved from its central position, connect one or other of the ports 90, 92 with a signal groove 106 communicating with a chamber 72 at the rear of the by-pass valve 62. If the pressure increases in the jacks, and consequently in one or other of the grooves 90, 92, it is transmitted by one of the passages 118 or 120 to the groove 106 and chamber 72 to move the valve 62 to the left to reduce the flow through the by-pass and increase the pressure supplied to the jacks so that the pressure difference between the inlet and outlet ports is maintained at substantially the same value. Conversely, any decrease in pressure in the jacks, will move the valve in the opposite direction to increase the flow through the by-pass. The valve 52 is a one-way valve to prevent back pressure from the jacks damaging the pump, a port 53 connecting the back pressure to the interior of the valve to effect closing thereof. The inlet chamber is also connected to the outlet chamber by a normally-closed, adjustable pressure relief valve 42.
Patent GB-1537531-A (GB)
Title: Method and apparatus for producing a uniform textile fibre sliver
IPC: D01H5/38
Filed: 1976-09-22
Abstract: 1537531 Producing uniform sliver GRAF & CIE AG 22 Sept 1976 [1 Oct 1975] 39237/76 Headings D1F and D1N The sliver output from a machine 1 is made uniform by passing it through a drawing device 4 where the drawing roller (14, 15,) speed is controlled in response to signals from measuring rolls 12, 13, these signals also effecting the speed of a take up device 3, the sliver extending in a catenary from the drawing rolls 14, 15 to the take up device. The catenary varying continuously between a maximum and minimum length as determined by sensors 23, 24 which change the take up speed between high and low valves to continuously change the catenary length. Speed controllers 20 and 25 for the drawing rolls and sliver take up are operated by a computer 17 which responds to a speed signal from the measuring rolls which are driven by the preceding machine, e.g. carding engine 1, a sliver thickness signal from the measuring rolls and a preset desired thickness signal. Signals from detectors 23, 24 which respond to the catenary length are fed either to the computer 17 on the speed controller 25. The sensors may be light barriers, capacitive elements or terminal switches activated by a member displaceable by the sliver. An indicator of the sliver thickness may be provided operated by the computer.
Patent GB-833113-A (GB)
Title: Photographic developer
IPC: G03C5/30
Filed: 1957-12-18
Abstract: 3-Alkyl-4-amino-5-pyrazolones of the general formula <FORM:0833113/IV (b)/1> wherein R is H, heterocyclic, alkyl, alkyl substituted with carboxyl, ester or nitrile groups, phenyl or phenyl substituted by alkyl, alkoxy, hydroxy, amino, alkylamino, acylamino, carboxyl or sulphonic acid groups, are prepared by converting the 4-unsubstituted compounds into 4-isonitroso compounds, e.g. by dissolving in caustic soda, adding sodium nitrite and adding the mixture dropwise to hydrochloric acid, and then reducing the 4-isonitroso group to an amino group, e.g. with tin and hydrochloric acid, zinc and glacial acetic acid, or with hydrogen under pressure with a nickel catalyst. Examples are given of the treatment of 1-(p-nitrophenyl), 1 - (m - nitrophenyl), 1 - (p-tolyl), 1 - (m - carboxyphenyl), 1 - (m - sulphophenyl) and 1 - (21 - pyridyl) - 3 - methyl - 5 - pyrazolones and 3 - methyl - 5 - pyrazolone to give the 4-isonitroso and 4-amino derivatives.  In the case of the 1-(nitro-phenyl) derivatives, the nitro group also becomes reduced to give 1-(aminophenyl) compounds. 1-Phenyl-3-methyl4-iso-nitroso-5-pyrazolone also is reduced with hydrogen under pressure and a nickel catalyst to give 1-phenyl-3-methyl-4-amino-5-pyrazolone.  Salts with sulphuric and hydrochloric acids are described.  Specifications 459,665, 757,840, 768,071 and 795,476 are referred to.
Patent GB-1032387-A (GB)
Title: Web feeding apparatus
IPC: B65H23/18
Filed: 1964-09-28
Abstract: 1,032,387. Feeding webs. DIAMOND NATIONAL CORPORATION. Sept. 28, 1964 [Oct. 16, 1963], No. 39412/64. Heading B6B. In a reel stand 10 for feeding a web W to a two drum web winder, Fig. 6 (not shown), a web-roll 66, is supported between a pair of carriages 34, Fig. 2, each carriage mounted for movement on parallel guide rails 28. The web-roll 66 is urged against a driven drum 22 by a pair of fluid cylinders 76, the piston-rods 78 of which co-operate with extensions 38 on the carriages 34. Fig. 4 illustrates a cross-section of a guide rail 28 which comprises hollow sections 30 to receive the roller elements 42, 44 of each carriage. The bearing support 50 of each carriage is adjustable transversely of the carriage by means of a screwthreaded axle 58 which can be turned with a handle 64. This enables the web-roll 66 to be correctly aligned. The web W can be additionally adjusted transversely, with a roller 82, Fig. 2, pivoted at one end and movable with a hand wheel 102 at the other end. The drive for the drum 22 is taken from the two-drum web winder via a reverse core pulley system and reversing gears, Figs. 5 and 6 (not shown). Adjustment of the pulley system provides adjustment of the tension in the web between the reel stand 10 and the two drum web winder, due to the differential speed. In a modification, Figs. 7 to 9 (not shown), the reel-stand 10 is mounted on a base so that it is capable of being reciprocated transversely of the direction of feed of the web with respect to the base.
Patent GB-1031546-A (GB)
Title: Pregnapentaenes and method of preparing the same
IPC: A61K31/57
Filed: 1964-09-28
Abstract: The invention comprises a steroid of the formula <FORM:1031546/C2/1> wherein R is hydrogen or lower alkanoyl, R1 is hydrogen, methyl, fluoromethyl, difluoromethyl, trifluoromethyl or fluorine, R2 is hydrogen, a -methyl, b -methyl, a -hydroxyl, a -lower alkanoyloxy, R3 is hydrogen or hydroxyl, R4 i hydrogen, hydroxyl, lower alkanoyloxy, halogen or alkylsulphonyloxy and X is <FORM:1031546/C2/2> and a method of preparing compounds of the formula <FORM:1031546/C2/3> wherein R1 is H or lower alkanoyl, R2 is H, methyl, fluoromethyl, difluoromethyl, trifluoromethyl or fluorine and <FORM:1031546/C2/4> represents <FORM:1031546/C2/5> by contacting a steroid of the formula <FORM:1031546/C2/6> wherein R2 and -C17-C16- are as defined above and X is chlorine or bromine, with a weak organic base at a temperature of 15 DEG -160 DEG  C. and recovering said product therefrom.