baber/WOPTO huggingface dataset:
Patent GB-1439374-A (GB)
Title: Dragnet folding device
IPC: A01K73/06
Filed: 1973-08-07
Abstract: 1439374 Net hau'er D TAKAMURA 7 Aug 1973 37485/73 Heading A1A [Also in Division B8]  A device for hauling a dragnet and folding it onto a deck comprises a pair of ball rotors 2, 2' rotated in opposite directions to each other by a driving mechanism suspended from the top of a guide pole 3. A second pair of rotors 6, 6' supported in a housing 4 which is suspended by a rope 5 from an intermediate point of the guide pole are driven by a motor 10 linked to gears, 9, 9'. Each gear is in turn connected to a sectorial spur gear 11, 11', both of which alternately intermesh with a gear 12 such that the latter gear periodically changes its direction of rotation. A rope 14, secured to the guide pole and to a pulley 13 axially connected to gear 12, is alterately coiled and uncoiled about the pulley as the motor 10 rotates the gears, causing the housing 4 to move periodically in a vertical plane passing through the guide pole. The net is hauled in by the drag chain 'a' being pulled through the higher set of rotors and folded on the deck by periodic motion of the casing 4. In a second embodiment, Fig. 3 (not shown) the periodic motion of the casing 4 is effected by a rod, attached to the rope 5, and driven by a motor driven disc. If necessary, a number of devices may be operated simultaneously.
Patent GB-1083471-A (GB)
Title: Improvements in preformed magnetic core structures
IPC: H01F27/245
Filed: 1965-09-03
Abstract: 1,083,471. Transformers; inductors. GENERAL ELECTRIC CO. Sept. 3, 1965 [Sept. 23, 1964], No. 37711/65. Heading H1T. A core member 10 of an induction apparatus comprises a plurality of successively superposed rectangular laminate layer groups. 25-30, each group being formed of n laminate layers, where n = 4 in Fig. 3, each layer including a pair of L-shaped laminates of magnetic strip material, e.g. cold rolled silicon steel, having a direction of preferred magnetization along its length. In one form (e.g. Fig. 5) two such core members are disposed in side-by-side relation and a coil assembly is provided on the centre leg. In another form (Fig. 6) a third such core member is disposed around the two side-by-side members, and three coils are provided on the three legs to be used in three phase power applications. The laminates and the groups are held together by epoxy resin adhesive or by mechanical means.
Patent GB-1276441-A (GB)
Title: Electromagnetic weighing machines
Inventor: BAUMGARTNER MAX
IPC: G01G7/04
Filed: 1970-08-05
Abstract: 1276441 Weighing electrically METTLER INSTRUMENTE AG 5 Aug 1970 [18 June 1970] 37832/70 Heading G1N A weighing machine includes a beam 3, weighing pan 6 and an electromagnetic force balance including means to provide a signal to the coil 13 so as to move the beam to a predetermined angle of inclination so that a mechanical damper 10 is engaged to damp pendulum oscillations of the weighing pan. During weighing a signal representing beam angle is provided from coil 16 and compared in differential amplifier 20 with a reference voltage from potential divider 21, 21<SP>1</SP> representing a balanced position, the output from the amplifier energizing a coil 13 on the beam and co-operative with fixed magnet 12 to balance the beam, coil current being indicated on a digital voltmeter 24 across a shunt. To operate the damper, a switch 23 is actuated to connect an alternative potential divider 22, 22<SP>1</SP> to provide the reference input to the amplifier whereby the coil current is of a required magnitude to allow the pan to drop so that an element 8 on the pan suspension 5 engages the friction faces 9. In an alternative embodiment Fig. 2 (not shown) the switch 23 and potential divider 22, 22<SP>1</SP> are connected to the output terminals of the amplifier 20. In either embodiment when the damper is engaged the reading on the meter 24 is not representative of the weight 7 in the pan.
Patent GB-884235-A (GB)
Title: Fluid controlled vehicle steering system
IPC: B62D5/14
Filed: 1959-11-09
Abstract: 884,235. Vehicle power steering. SPECIALTIES DEVELOPMENT CORPORATION. Nov. 9, 1959 [Jan. 29, 1959], No. 37864/59. Class 79(5). A reversible fluid driven motor 12 connected to a steering mechanism 11 has a pair of ports 41, 41<SP>1</SP> each serving alternatively as an inlet and an outlet connected by conduits 34, 35 to a pair of ports 25, 26 in a control valve 15 connected to a source 14 of fluid under pressure, a valve 57, 57<SP>1</SP> being provided in each conduit to vent the motor port when its conduit is not pressurized and to place the port in communication with the valve 15 when the conduit is pressurized while a second valve 48, 48<SP>1</SP> in each conduit alternatively vents one of the conduits when the other is pressurized. When the control valve 15 is rotated compressed air from the source 14 flows, for example, through the conduit 34 to displace a piston 49 to the right forcing the valve 48 against its seat 47 and opening the valve 48<SP>1</SP>. In addition, the air flow forces, the valve 57 downwardly against its spring 64 to seal off a vent port 45 and depresses a spring-loaded check valve 59 to permit air to flow to the motor through openings 70. Rapid reversal of the position of the control valve 15 during steering moves the piston 49 to vent the previously pressurized conduit and allow the valve 57 or 57<SP>1</SP> to move upwardly under its spring pressure to vent the motor port. The invention may be applied to an aircraft nose wheel which is coupled to the motor 12 by a gear train 17.
Patent GB-799917-A (GB)
Title: An improved process for producing cyclic diorganosiloxanes
IPC: C07F7/21
Filed: 1956-12-12
Abstract: Cyclic diorganosiloxanes are produced from diorganosiloxanes of different composition by heating the starting siloxane and an inert solvent boiling above 250 DEG  C., the solvent being present in amount of at least 20 per cent by weight of the siloxane, in the presence of a catalyst which is an alkali metal hydroxide or salt of a silanol, the pressure and temperature being such that the solvent is not distilled, while removing the desired cyclic siloxanes from the reaction zone.  The starting siloxane may be cyclic or linear or copolymeric, and may range from liquids to gums.  Specified are dimethyl, diethyl, methylvinyl, allylmethyl, phenylmethyl, phenylethyl, trifluoropropylmethyl and trifluorotolylmethyl siloxanes.  The process is particularly useful for preparing cyclic trisiloxanes and co-cyclics. Suitable solvents include high boiling petroleum oil, polynuclear aromatics such as diphenyl, anthracene and cyclohexylbenzene, chlorinated aromatics such as chlorinated biphenyl, and aromatic ethers such as diphenyl ether and biphenyl ether.  The solvent need be liquid only at reaction temperature.  In the examples: (1) and (2) hexamethylcyclotrisiloxane is prepared from octamethyl tetrasiloxane, using batch and continuous process respectively; (3) monovinyl heptamethyl- and divinyl hexamethyl-cyclotetrasiloxanes are prepared from a mixture of tetramethyltetravinyl and octamethyl - cyclotetra siloxanes; (4) corresponding results to (3) are obtained using a mixture of tetraphenyltetramethyl and octamethyl - cyclotetrasiloxanes; (5) tris - trifluoropropyltrimethylcyclotrisiloxane is prepared from a gum consisting of a mixture of siloxanes [CF3CH2CH2Si(Me)O]x, where x is 5000 to 10,000.  Specifications 571,725, [Group IV], 722,482 and 774,040 are referred to.
Patent GB-960476-A (GB)
Title: Improvements in or relating to spraying equipment
Inventor: BALS EDWARD JULIUS
IPC: B05B7/02
Filed: 1961-10-24
Abstract: 960,476. Crop sprayers. BIRFIELD ENGINEERING Ltd. Oct. 19, 1962 [Oct. 24, 1961], No. 37994/61. Heading B2F. Spraying equipment comprises a duct, an engine-driven fan within the duct to produce an air blast along the latter, a rotary atomizer at or adjacent the downstream end of the duct, and turbine blades for driving the atomizer disposed downstream of the fan and driven by the air blast, the turbine blades being of comparatively small pitch as compared with the blades of the fan. The term "pitch" is defined as the angle between a blade and a plane normal to the axis about which the blade rotates. The duct comprises four cowlings 1-4 bolted together. The fan blades 9 are mounted on a hub 10 and arranged at about 40 degrees to the duct axis. The fan is mounted directly on the crank-shaft 12 of an I.C. engine 8. A shaft 16 mounted in bearings 20, carries two turbine blades 14 arranged at about 80 degrees to the duct axis and a rotary atomizer 15. The latter comprises a gauze cylinder 18 and is supplied with liquid by a feed pipe 24. Fixed deflector blades 13 are mounted on a hub 19. A wired grill 37 and a lubricator 23 are provided. A shield 22 prevents the liquid running along the shaft 16 to the bearings 20. In operation the air blast impinging on the turbine blades rotates the turbine and hence the atomizer at a greater speed than the fan. The duct is mounted on the frame of the I.C. engine and a notched plate 26 secured to said frame is pivoted at 27 to a support 25, whereby the inclination of the spray is adjusted. Further, the support 25 has a flange 30 held in a mounting ring 32, whereby the horizontal direction of the spray is adjusted. In a modification, the fan hub 10 is extended in the downstream direction and the shaft 16 mounted in bearings therein.
Patent GB-1057725-A (GB)
Title: Improvements in or relating to the recovery of fluorine compounds
IPC: C01B25/234
Filed: 1963-09-26
Abstract: H2SiF6 is obtained from vapours under vacuum containing water vapour and a stoichiometric excess of SiF4 over HF, by scrubbing with a liquid containing sufficient HF to prevent the precipitation of silica and at a temperature to prevent condensation of water.  In an embodiment, phosphoric acid prepared from phosphate rock is concentrated by vacuum evaporation in two stages to provide (a) vapours from the first stage containing a stoichiometric of SiF4 over HF and (b) vapours from the second stage containing a stoichiometric excess of HF over SiF4, which first stage vapours are scrubbed with liquor containing sufficient HF to prevent precipitation of SiO2. The scrubbing liquor from the second stage may be used, possibly with added HF, as scrubbing liquor for the first stage.  (NH4)2SiF6 is obtained if aqueous ammonia is used as scrubbing liquor in stage (b).
Patent GB-964423-A (GB)
Title: Improvements in or relating to valve control gear for internal combustion engines having inlet and outlet valves arranged concentrically in the cylinder head
IPC: F01L1/28
Filed: 1960-11-07
Abstract: 964,423. I.C. engine valve gear. A. J. BUCHI. Nov. 7, 1960 [March 3, 1960], No. 38193/60. Heading FIB. In valve gear having inlet and outlet valves arranged coaxially, a pair of levers 4, 5, Fig. 1, are carried by a common lever shaft 3, one lever arm part 4a actuating the inner valve V1 directly and the other lever arm part 5a actuating the outer valve V2 by way of intermediate means 6 and at least one arm part extends substantially in a plane which is inclined to the lever shaft axis. Arm part 4a passes through a hole 6a in the intermediate piece 6 which is freely rotatable in a connecting piece 7 secured to the valve stem by a nut 8. The connecting piece forms an abutment for an exhaust valve spring R1 and a yoke 9, keyed to the inlet valve stem, has arms, passing through slots 6c in the intermediate piece, which form spring abutments for the exhaust valve springs R2. In another embodiment, a helical coil spring closes the exhaust valve through a spring abutment yoke having four arms passing through slots in the intermediate piece. In a further embodiment, the arm part 5<SP>1</SP>a, Fig. 6, is formed with two cam-shaped engaging surfaces 5<SP>1</SP>b. In a modification, the intermediate piece is formed as a deep cup with slots for the inner valve arm part and spring abutment yoke arms, and the engaging surface of the outer valve arm part overlies that of the inner valve arm part. The valve clearance may be adjusted by means of disc-headed screws 16, Fig. 9, and the lever arms 14, 15 are made of the same casting, pressing or forging.
Patent GB-1060919-A (GB)
Title: Cloth preservative
IPC: D06M13/46
Filed: 1965-09-07
Abstract: Cloth is rendered resistant to soil degradation by impregnation with 0.1 to 5.0% by weight of an N-(1-methylalkyl) benzylamine or a metal complex or double salt of such an amine, said benzylamine having the formula: <FORM:1060919/A5-A6/1> in which R is a hydrocarbon radical containing 7 to 21 carbon atoms.  Said double salt has the formula: <FORM:1060919/A5-A6/2> in which R is as defined above, and X represents a copper, tin, zinz, chromium, mercury, iron or nickel atom.  Said metal complex is the reaction product of the N-(1-methylalkyl) benzylamine with a heavy metal salt.
Patent GB-1125860-A (GB)
Title: Method of separating frit-sealed glass bodies
Inventor: WOOD DOYLE ALFRED
IPC: H01J9/52
Filed: 1967-08-18
Abstract: 1,125,860. Separating frit-sealed glass bodies. SYLVANIA ELECTRIC PRODUCTS Inc. 18 Aug., 1967 [2 Sept., 1966], No. 38258/67. Heading C1M. To separate glass bodies frit-sealed together at a junction area, particularly the face plate and cone of cathode-ray tubes, in which the exterior of the frit-seal overlaps the bodies, the overlapping exterior of the frit-seal is abrasively removed; the remainder of the seal is thermally shocked to incorporate stresses therein and the seal is then mechanically shocked to cause separation. Abrasive removal is effected by bombarding the outer seal by fluid carried particles such as sand or alumina. The seal is then heated, preferably by running hot water, to about 130 F. and the seal then given a sharp rap as with a rubber mallet. The frit remaining on the edges of the glass face plate and cone can then be removed by placing the edges in a shallow bath of nitric acid.
Patent GB-386641-A (GB)
Abstract: 386,641. Thermal switches. CARRIER CORPORATION, 110, West 10th Street, Wilmington, Delaware, U.S.A.- (Assignees of French, D. E. ; Merion, Pennsylvania, U.S.A.) April 16, 1931, No. 11304. Convention date, Sept. 20, 1930. Void [Published under Sect. 91 of the Acts]. [Class 38 (v).] The operation of a gas-fired water-heater is controlled by thermostats 65, 76 responsive respectively to the temperature of the water and of the room, and arranged in a series circuit which controls the operation of the switch 61 of the fan motor. To avoid operation of the motor switch 61 for small temperature variations, the thermostat 76 comprises a flexible arm 77 which first makes contact, and a stiff arm 78 which contacts at a slightly lower temperature. The thermostat 65 comprises two similar contacts, and the circuit of the relay coil 58 is not completed until both contacts in each thermostat are made. The switch 61 is then operated to close the motor circuit, and at the same time the switch arm 60 closes a holding circuit which maintains the operation. This holding circuit includes the flexible contact arm of the relays, but not the stiff arms, and is therefore not broken by small movements of either relay. A rise in temperature sufficient to break the contact of the flexible arm in either relay breaks the holding circuit and stops the operation of the heater.
Patent GB-1179096-A (GB)
Title: Flotation Unit.
Inventor: SANDERSON WALTER HARRISON
IPC: C02F1/24
Filed: 1967-08-23
Abstract: 1,179,096. Agitating and aerating slurries. KOMLINE-SANDERSON ENG. CORP. 23 Aug., 1967, No. 38837/67. Heading B1C. Apparatus for flocculating and separating sewage sludge comprises a tank 10 within which is a mixing well 34 defined by a U- shaped wall 34a (see also Fig. 3, not shown); sludge is introduced at 12 and mixes with gentle turbulence with a pressurized dispersion of air in water discharged downwardly into the well at 42b. Flocculating reagent may be added to the air-water dispersion at 46. The flocculant particles are buoyed to the surface where they are removed by skimmer blades 24 while the clarified effluent discharges over a weir into a launder 16.
Patent GB-1046749-A (GB)
Title: Apparatus for the withdrawal of a tubular film of plastics material from an extruder head and for collection of the withdrawn film
IPC: B29C48/03
Filed: 1964-09-23
Abstract: 1,046,749. Films. AMUT S.p.A. Sept. 23, 1964 [Sept. 30, 1963], No. 38848/64. Heading B5B. Apparatus for the withdrawal of a tubular film of plastics material from an extruder head and for collection of the withdrawn film comprises members for withdrawing and collapsing the tubular film and means for collecting the film from said members, wherein said members and said means are mounted on a base for rotation together about a common axis. In Fig. 2, 1 is a rotary framework that supports two flat entrance doors 2 disposed to form a convergent guide channelling initially tubular film T to the bight between two co-operating rolls 3, 3<SP>1</SP> which are also supported by the framework 1, the doors 2 and the rolls 3, 3<SP>1</SP> rotating with the framework during operation of the apparatus. The tubular film T is of plastics material and is extruded from a stationary head (not shown). The axis of the part of the tubular film T entering the space between the doors 2 is horizontal. At 4 there is indicated a framework that carries collecting rolls 5, idler rolls 6 and an idler roll 7 upon which can act if desired knives (not shown) for slitting the edges of the tubular film. At 8 are indicated four links connecting the frameworks 1 and 4 upon which are rotatably mounted rollers 9. Rollers 9 have V- shaped grooves in their peripheries which grooves engage V-shaped tracks on the inner surfaces of two fixed rings 10 which are mounted on a base 15. The rolls 3, 3<SP>1</SP> and 5 are rotated about their longitudinal axes through chains 12 driven by a motor 11 while the assembly of frameworks 1 and 4, links 8, doors 2 and rolls 3, 3<SP>1</SP> and 5 is rotated about said horizontal axis of said part of the tubular film T, by a motor 13 which drives a gear-wheel 14 that is rigidly secured to the links 8. Upon rotation of said assembly, said longitudinal axes remain perpendicular to said horizontal axis. Rotation of the rolls 3, 3<SP>1</SP> causes the tubular film T to be withdrawn from the extruder head and collapsed, the collapsed film being wound on to one of the rolls 5. In particular no twisting of the film takes place because the tubular film slides transversely on the surface of the collapsing rolls 3, 3<SP>1</SP> and of the entrance doors 2 which revolve around it, while it is advanced, describing a spiral-shaped path on the film itself. While the tubular film is advanced at about 20-25 m/min., the rotary framework 1 accomplishes one complete rotation in 5-10 minutes. Said assembly can be rotated continuously in one direction by the motor 13 or alternatively the gear-wheel 14 can be fitted with reversing switches (not shown) operated by the assembly and controlling the motor 13 so that said assembly is rotated back and forth first in one direction and then in the opposite direction.
Patent GB-1273560-A (GB)
Title: Blind fastening device
Inventor: SIDNEY LESLIE PARKIN
IPC: F16B37/12
Filed: 1968-08-14
Abstract: 1,273,560. Anchor nuts. CARR FASTENER CO. Ltd. 28 May, 1969 [14 Aug., 1968], No. 38854/68. Heading F2H. A fastener for use with a screw or bolt 8 comprises a base portion 1 having a threaded aperture and a plurality of arms 2 so arranged that when the fastener is located in a bore 6 of a structure 7 and a bolt 8 is threaded into the aperture, the bolt 8 bears on the arms 2 to urge their free ends 4 to bite into the wall of the bore. The free ends 4 may each be provided with a pair of prongs 5 separated by a concave recess and the fastener may be of resilient steel sheet material. The arrangement is such that on insertion of the fastener into a bore it is initially retained by the engagement of the prongs with the lateral wall of tne recess and is anchored by the insertion of the bolt engaging the medial portions of the arms to effect lateral movement of the ends to cause them to be embedded into the wall of the bore.
Patent GB-1243139-A (GB)
Title: Irreversible strain gauges
Inventor: RAUCH JOSEPH
IPC: G01L1/06
Filed: 1969-08-04
Abstract: 1, 243, 139. Strain gauge. COMPAGNIE PECHINEY. Aug. 4, 1969 [Aug. 5, 1968J, No.38895/69. Headings G1M and GIN. A strain gauge comprises a wire b made of metal having an elastic limit of less than 3 kg/sq. cm. and/or a relative elongation at the elastic limit of less than 500 Î 10<-6>. In use, the maximum deformation of an article is measured by causing the gauge wire to be stretched plastically and measuring the change in electrical resistance. In Fig. 1 a gauge suitable for measuring expansion comprises a frame c carrying gauge wire b. In Fig. 2, a device suitable for measuring contraction of member k comprises two relatively movable frame parts c and g carrying wire b. The wire may be of gold, silver, lead, copper, aluminium or alloys thereof.
Patent GB-1017916-A (GB)
Title: Improvements in and relating to on-load tap changers for transformers
IPC: H01F29/04
Filed: 1964-09-25
Abstract: 1,017,916. Electromagnetic switches. BROWN, BOVERI & CO. Ltd. Sept. 25, 1964 [Sept. 27, 1963], No. 39111/64. Heading H2B. [Also in Division H1] In order to prevent the short-circuiting of the inter-tap winding 1a to 1b (Fig. 1) during a tap change on an on-load transformer, circuitbreakers 12a, 12b ... 12n are inserted in the short-circuit in series with the diverter switch 10 and automatically open when the shortcircuit current flows. The circuit breakers comprise two resilient contact members 16, 17 (Fig. 2) which during a short-circuit current surge repel each other and arcing occurs between them which reduces the short-circuit current to zero. The contacts 16 and 17 are prevented from closing again before the diverter switch 10 reaches the position 8 by pistons 22 at their ends seating in cylinders 23 which occlude air and prevents its escape when the piston 1 return. Interlocking of the circuit-breaker with an arm 9 (Fig. 3, not shown), prevents the formation of an arc across the switch 9 if when the tapchange takes place a system short-circuit occurs.
Patent GB-1356184-A (GB)
Title: Investigating various media by echoes
IPC: H03F3/72
Filed: 1971-08-20
Abstract: 1356184 Acoustic pulse-echo systems INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE 20 Aug 1971 [2 Sept 1970] 39114/71 Heading H4D To prevent "dazzle" of the echo amplifier of an acoustic pulse-echo apparatus by the transmission pulses, a blocking circuit is provided comprising in parallel with the transducer a resistor/Zener diode dipping circuit, the output of which is connected via a field-effect transistor switching stage to the amplifier input, the switching stage being non-conductive for the duration of the transmission pulse. In the Fig. 1 embodiment transmit/receive transducer 1 is coupled to echo amplifier 3 via clipping stage 4 and switching stage 5. A trigger pulse from generator 8 starts the time base sweep (at 7) for echo display cathode-ray tube (C.R.T.) 6 and, after a brief delay provided by monostable circuit 9, triggers monostable circuit 11 to provide a blocking signal which passes via pulse transformer 121, and emitter-follower 122 to stage 5 to switch-off field effect transistor 51 (and possibly a second, cascaded field effect transistor). During this blocking signal, thyristor pulse generator 2 is triggered via monostable circuit 10 to energize transducer 1. The Zener diodes 41 in the clipping stage 4 have a turn-on time less than the rise time of the transducer energization pulse and clip this pulse without appreciably attenuating the echo pulses. The blocking signal is adjusted to terminate as soon as the transducer energization pulse amplitude has decayed to a level which is insufficient to cause amplifier saturation.