baber/WOPTO huggingface dataset:
Patent GB-1230009-A (GB)
IPC: B64C27/26
Filed: 1968-09-20
Abstract: 1,230,009. Convertiplane blade folding actuator. UNITED AIRCRAFT CORP. 20 Sept., 1968 [12 Oct., 1967], No. 44755/68. Headings B7G and B7W. [Also in Division F2] An actuator unit especially adapted for folding helicopter rotor blades as disclosed in Specification 1,230,010 comprises two rotary output shafts 220, 222 driven through a planetary gear system by either motor 250 or 252, and two linear motion outputs 162, 296 which operate rotor blade locking mechanisms (not shown) and are driven by cams. A planetary gear 264 supported in a cage 268 may be driven either by a sun gear 260 splined on to shaft 254 of motor 250, or by a ring gear 310 driven by a gear 319 splined on to shaft 302 of motor 252. Output shafts 220, 222 are initially stationary, each being connected to two rotor blades locked against motion (not shown), so that initial motion of planetary gear 264 drives ring gear 274, and a contoured cam surface 414, Fig. 7, engages a cam follower 281 to produce a linear output at 162. This linear output unlocks the rotor blades attached to output shaft 220, and further rotation of ring gear 274 causes an end of a circumferential slot 276 in the ring gear to drive output shaft 220 via a pin 278 mounted on output shaft 220. Rotation of output shaft 220 continues until the rotor blades attached thereto reach a stowed position, and at the end of this rotation contoured cam surface 294 on shaft 220 operates cam follower 293 to produce a linear output 296 and unlock the rotor blades attached to shaft 222. Output shaft 222 is then driven until the rotor blades attached thereto are also stowed.
Patent GB-1238478-A (GB)
IPC: C07D295/023
Filed: 1968-11-22
Abstract: 1,238,478. N-methyl piperazine. BADISCHE ANILIN- & SODA-FABRIK A.G. 22 Nov., 1968 [24 Nov., 1967], No. 55441/68. Heading C2C. A process for the production of N-methyl piperazine comprises reacting an aqueous formaldehyde solution with piperazine in the presence of acetic acid or piperazine acetate, the resultant polymethylene is hydrogenated in the presence of a hydrogenation catalyst, e.g. Co, Ni, Cu, Cr or Mn, at elevated temperature and at superatmospheric pressure and the N,N<SP>1</SP>-dimethyl piperazine which has also been formed is distilled off from the reaction mixture as an azeotrope with water, pure N-methyl piperazine being obtained from the residue by distillation.
Patent GB-1238541-A (GB)
IPC: B01F23/30
Filed: 1968-06-19
Abstract: 1,238,541. Jet pulverizers; pneumatic separator; cyclones. G. E. K. BLYTHE. 10 June, 1969 [19 June, 1968], No. 29083/68. Headings B2A; B2H and B2P. A jet pulverizer comprises a material injector nozzle arrangement I, Fig. 1 which also effects initial comminution, and a mill chamber MC including tangential high-pressure fluid jets 9 which may be plain or of the venturi type. The injector I comprises an input jet tapering at 1a and expanding at 1c, and leading into a nozzle 2 tapering at 2a and expanding at 2c. Material to be ground is supplied tangentially at 4. The material is thence fed to the mill chamber MC via an annular manifold 13 and inlets 15. The mill chamber may be of pan, toroidal "race-track" or serpentine form, of circular square or trapezoidal cross-section. The system may include a cyclone; and provide for recirculation of the product by means of an adjustable scoop 34, Fig. 6, and mills may be arranged in parallel with commoned outlets. A system includes a cyclone collector 42, Fig. 8, jacketted at 44. Fine particles enter the collector 42 and water droplets in a spray 52 sweep them up. The droplets are immediately evaporated by the jacketted walls and later condenses in a condenser 55. In an alternative system gas leaving the grinding system is supplied first to a nozzle 59, Fig. 10 and then via an adjustable nozzle 60 is turned downwards by an impact plate 61 and thence passes upwards via adjustable shutters 62. Particles of a precisely desired size may be bled off by adjustment of the nozzle and shutters. Substances referred to, which may be ground in the apparatus include tea leaves, pigments, fuels and soil nutrients. (For Figures see next page)
Patent GB-1238566-A (GB)
IPC: F24H1/50
Filed: 1969-10-14
Abstract: 1,238,566. Boilers. EUROTHERM S.A. 14 Oct., 1969 [26 Nov., 1968], .No. 50436/69. Heading F4A. A boiler 1 for water or other liquids comprises a combustion chamber 7 surrounded by a water jacket 2 having feed and discharge means 3, 4, a flue formed by the space between a body 9 and the water jacket 2 and fitted with metal deflector members, and around the interior of the jacket 2 a hollow double-walled corrugated heat exchanger having feed and discharge means 17, 18. The flue gas outlet 8 and the body 9 which is in two parts, are removable for cleaning, and the deflector members are zigzag sheets arranged to provide a zigzag path for flue gases. The boiler is of circular cross-section and may be fired by a gas burner placed in the aperture 6, or, for example, by an oil burner in which case it is supported on a base 5. The heat exchanger 10 has inlet and outlet pipes 17, 18 and can be formed from two corrugated tubes joined by welded seams 15, 16, or from corrugated tubes joined by cover members. The corrugations may extend over the whole height of the heat exchanger 10. The water jacket 2 contains water for heating while the heat exchanger provides water for domestic use. The boiler may be arranged horizontally-instead :of vertically.
Patent GB-1238653-A (GB)
IPC: G01B3/02
Filed: 1967-10-24
Abstract: 1,238,653. Scale conversion apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 11 Oct., 1968 [24 Oct., 1967], No. 48236/67. Heading B3T. Scale conversion apparatus, particularly for inch/metric conversion e.g. for a lathe feed screw 1 having an indicating drum 3 marked with a first scale of units 5 comprises an endless belt 8 driven by a portion of the drum 3 and marked with a second scale of units 15. The belt may be frictionally driven or have holes engaging sprocket teeth (not shown) on the drum, and may be trained around guides and rollers or pegs to increase the arc of contact with the drum and to reduce the space occupied by the belt (Fig. 3, not shown).
Patent GB-1239412-A (GB)
IPC: D02G1/08
Filed: 1968-07-05
Abstract: 1,239,412. Twist tubes. MACOTEX (MACHINERY) Ltd. 23 April, 1969 [5 July, 1968], No. 32188/68. Heading DID. [Also in Division H2] Twist tubes comprising two outwardly flared trumpet-shaped pieces 10a each extending around an arc of 90 and meeting at a small central opening are characterised in that each flared surface has a narrow frictionengendering surface 17a for the yarn, the remainder of the surface being smooth so that negligible friction is engendered thereby: As shown, the narrow surfaces are rings of hard wearing metal or ceramic set into the flared surfaces midway between the perimeter and centre and protruding from the surface. The flared pieces can be rotated by an endless belt engaging their periphery (Fig. 1) or be joined to the rotor 21 of a four pole shaded pole electric motor as shown. The flared pieces can be mechanically braked or the motor may be associated with circuitry which causes the motor to function as a brake so as to stop the flared pieces from rotating. The rotating flared pieces can be supported in ball bearings, plain bearings, a magnetic field, a self lubricating bearing or a self-generating air bearing. Reference has been directed by the Comptroller to Specification 1,042,811.
Patent GB-1250713-A (GB)
IPC: E04C2/24
Filed: 1969-01-13
Abstract: 1,250,713. Laminated building slabs. INCENTIVE A.B. 13 Jan., 1969 [11 Jan., 1968], No. 2020/69. Headings B5A and B5N. [Also in Divisions E1-E2] A building slab comprises a core 1 of foamed plaster or concrete reinforced with mineral fibres with an addition of a water-insoluble polymer which binds the fibres, two layers 2 of impervious cement or plaster, with fibre reinforcement and a synthetic water-insoluble polymer, and outermost two layers 3 of plastics which may be unreinforced or reinforced by the fibre reinforcement projecting from the layers 2. The core may be expanded clay particles held together by cement or plaster. In a modification the core, as set out above, is covered on each side by a fibrereinforced plastics layer which replaces the two layers set out above, the fibre reinforcement of the plastics layers extending into the core. The foamed cement or plaster is expanded between two layers of glass fibre on a support surface and hardened before the plastics layers are applied.
Patent GB-1251119-A (GB)
IPC: G05D13/00
Filed: 1969-10-08
Abstract: 1,251,119. Valves. CHICAGO PNEUMATIC TOOL CO. 8 Oct., 1969 [13 Dec., 1968], No. 49495/69. Heading F2V. [Also in Division G3] A centrifugal governor, fitted to an air motor shaft 13, includes a body 17 and a guide shaft 24 joined to the shaft 12 by a threaded portion 25, a valve sleeve 29 axially movable on the shaft 24 by centrifugal weights 35 against an adjustable spring 41 to control the air supply through an inlet 31 a groove 53 in the surface of the shaft for conducting a stream of air between the sleeve and shaft to exclude dirt therefrom, and a ring 46 to selectively adjust the tension of the spring 41. The body 7 is supported by a bracket 22 splined at 23 to the shaft 13. In the position shown in Fig. 1 the sleeve 29 blocks the groove outlet 53. The ring 46 is formed with three sets of notches 44, arranged in a stepwise manner, Fig. 4, not shown, which co-operate with pins 43 so that the axial position of the ring can be adjusted.
Patent GB-1259439-A (GB)
IPC: B43K29/00
Filed: 1970-11-06
Abstract: 1,259,439. Kaleidoscopes. R. MORI. Nov.6, 1970 [July 27, 1970], No.52857/70. Heading G2J. [Also in Division B6] The casing 1 of a ball-point-pen comprises a kaleidoscope which includes a prism 6 of transparent resin and a housing 3 with freely movable coloured particles.
Patent GB-1259626-A (GB)
IPC: C25D13/00
Filed: 1969-03-20
Abstract: 1,259,626. Coatings. TRW Inc. 20 March, 1969 [21 March, 1968], No. 14771/69. Heading B2E. An article is obtained by depositing particles on a material of different physical properties from that of the substrate on the substrate as a substantially unform layer half-30 microns thick with the particles oriented substantially parallel to each other and to the layer. The substrate may be of metal or of a non-metal such as a thermoplastic material and may be in the form of a wire, metal foil or plastics film. The fibre may be of silicon carbide aluminium oxide or silicon nitride and may be applied to the substrate by suspending them in a non-polar solvent such as amyl acetate and applying an alternating electrical voltage to align the fibres. The substrate is then drawn upwardly through the liquid to deposit the fibres on the surface.
Patent GB-1266721-A (GB)
IPC: C21D8/08
Filed: 1969-04-09
Abstract: 1,266,721. Heat treating steel bars. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. April 9, 1969 [April 9, 1968], No.18295/69. Heading C7A. Round concrete reinforcing bars are produced by hot-rolling followed immediately by isothermal transformation to a bainite structure. The steel may contain 0À2 to 0À3% carbon and up to 1À5% manganese, and the transformation may be effected by leading the rod through a series of water sprays interspersed with air gaps, after which W is conveyed on rollers while transformation occurs.
Patent GB-1266758-A (GB)
IPC: A47F5/13
Filed: 1969-11-28
Abstract: 1,266,758. Clothes racks. LEVINE & SON Ltd. Oct. 12, 1970 [Nov. 28, 1969], No. 58311/69. Heading A4U. A free-standing clothes stand unit comprises two legs connected by a curved clothes rail extending between the legs, and by at least one other curved member of corresponding curvature to the clothes rail, extending between the legs. As shown, the unit has legs 10, a curved foot 3, clothes rails 5 and 16 supported by struts 6, 17 and a crosspiece 4, the crosspiece, rails and foot all being of the same curvature and lying in parallel planes. Two or more units may be connected by means of bolts passing through holes 9, and units may also be juxtaposed vertically. Castors 8 may be provided. Legs 10 may be provided with spigot and socket joints intermediate their lengths to allow insertion of extension pieces. Alternatively, the legs may be telescopic. The curve is preferably a 120 degrees arc of a circle.
Patent GB-1267117-A (GB)
IPC: H01Q3/08
Filed: 1970-03-13
Abstract: 1,267,117. Aerials. MARCONI CO. Ltd. 27 Nov., 1970 [13 March, 1970], No. 12079/70. Heading H4A. A steerable aerial is carried by a gear 15 which is rotatable by two driving gears 14, each connected to a respective shaft 22 through a gearbox 13 and bevel gearing 12. A motor 10 drives via a belt 18 the cage member 19 of a differential 11, each "sun " or output wheel of which is fixed to one of the shafts 22. A substantially constant torque spring 23 is connected between one of the planet wheels 21 and the cage member 19 of the differential 11, and serves to take up any backlash. As described, a reflector type aerial is mounted on the gear 15, the axis of said gear corresponding with the hour angle axis (Fig. 1, not shown). The gear boxes 13 have a large reduction ratio, for example, 3000 to 1. Tilting about an elevation axis perpendicular to the hour angle axis is effected by means of a screw-and-nut arrangement.
Patent GB-1267265-A (GB)
IPC: F03G7/06
Filed: 1970-01-23
Abstract: 1,267,265. Mechanical relay and follow-up devices; temperature-responsive actuating elements. LANDIS & GYR A.G. Jan.23, 1970 [Jan.31, 1969], No.3338/70. Headings G1D and G1J. A mechanical follow-up device or thermal actuator comprises closed vessels 1, 2 communicating by way of a tube 3, and a source of heat 9 ensuring that the vessel 2 contains only vapour and the vessel 1 only liquid, the arrangement being such that an input changes the mass of liquid in the first vessel whereby the pressure in the second vessel changes and causes movement of an output plunger 8. A small force can be applied by an electromagnet, a motor or a pressure senser to reduce the volume of a bellows 1, Fig. 1, and inject liquid through the narrow tube 3 of poor thermal conductance into bellows 2 where its evaporation raises the vapour pressure moves the plunger 8 against the force of a spring 7, the additional energy being derived from the heat supplied by an electrical resistor 9. The tube 3 acts as a damper preventing rapid injection and thermally insulating material is used for supports 5 and jacket 4 for the vessel 2. Overloading is prevented by a safety device comprising a sleeve 10 spring 11 and plunger 12 limiting the pressure in the bellows system and the force exerted by the plunger 8. In a modification, Fig. 2, the plunger 8 can be actuated by a change of temperature sensed by a senser 13, a rise of temperature injecting liquid into bellows 2 formed of plate springs welded together. The bellows 1 act as a setting control, if dispensed with an alternative safety device is desirable. The working fluid may be (Registered Trade Mark) "Freon".
Patent GB-1295498-A (GB)
IPC: G08B17/00
Filed: 1970-10-07
Abstract: 1295498 Fire detectors EATON CORP 7 Oct 1970 [29 Oct 1969] 47694/70 Heading G1N In a fire detector, e.g. detecting the presence of smoke or other gases of combustion or rapid temperature rise, an intermittently occurring electric field which produces a self-sustained avalanche current in an ionization gauge 12 is provided, and the current flow is compared with a reference magnitude to operate an alarm or fire-fighting apparatus when a predetermined difference exists. In the embodiment shown, Fig.1, the reference magnitude is provided by a reference ionization gauge 14 surrounded by a partially sealed enclosure 24 to restrict movement of the atmosphere to the gauge, whereas, in a second embodiment Fig. 2 (not shown), a single ionization gauge is used, a first current flow produced by a first pulse being utilized as the reference magnitude and a second current flow provided by a second pulse being compared therewith. The comparison is effected by differential amplifer 26 in conjunction with comparators 28 and 30 and upper and lower limit reference voltages.
Patent GB-1296315-A (GB)
IPC: A62C3/00
Filed: 1971-04-19
Abstract: 1296315 Fire extinguishing in warehouses CONTINENTAL GUMMI-WERKE AG 10 April 1971 [5 March 1970 10 Sept 1970] 22912/71 Heading A5A A fire extinguishing device for the protection of stacks of goods 2 in warehouses, storage and assembly sheds comprises tubular member 3 freely suspended at 4 from ceiling 5 and screw connected thereat to rigid waterpipe 6, the member 3 extending downwards substantially the entire depth of the stacks. Member 3 may be a rigid or flexible hose with spray holes 8, closed at its free end by dummy coupling 7. Pipe 6 includes electromagnetic stop valve 9 actuated by current source 10 when tripped by smoke warning device 11. In the Fig. 2 embodiment pipe 6 is supported below ceiling 5 on anchor clips 6a and travelling crane 12 moves along rails 14 over the entire shed length. A flexible hose 3 is folded and releasably retained by thermoplastic foil strips 14 having a weak point or a predetermined breaking point. Alternatively, a plastics tap having a ripping seam may be used.
Patent GB-1297364-A (GB)
IPC: G06G7/24
Filed: 1970-04-16
Abstract: 1297364 Logarithmic amplifiers MITSUBISHI DENKI KK 16 April 1970 [16 April 1969] 18339/70 Heading G4G An amplifier 20 whose output voltage V is proportional to the log of the input current I is compensated for temperature changes by means of temperature dependent resistances 26, 28 and a source 22 of constant voltage U related to a quantity U o  which expresses the temperature-dependent properties of a logarithmic transfer element, e.g. a transistor 4, in the amplifier 20. The current I (at terminal 1) can be related to the voltage V (at terminal 2) by where I 1  is the saturation input current, T = absolute temperature, k = Boltzman's constant, q = unit elementary charge. If V ” 0À1 volt, this equation approximates to i.e. V is proportional to log I. The temperature dependence of the saturation current I 1  may be expressed by where C, d and V o  are constants inherent in the transistor (or diode) 4. This equation may be written If T approximates an arbitrarily selected T 0 , it can be expressed by These equations lead to where Combining this with equation (2) we finally obtain, in common logs, Source 22 of voltage U and log amplifier 20 are connected by respective temperature-dependent resistances 26, 28 to an inverter amplifier 30 having a feedback resistance 32 of value r. The input of amplifier 30 is connected via resistance 34 of value r 3  to a source of variable reference potential V 3 . The values of resistances 26, 28 are r 1 , r 2  and their temperature dependence can be expressed by the equation where the bracketted figures indicate the temperature at which the resistance is measured. For the output voltage V out  at 17 we have, The quantities U and r 2 (T) are selected to satisfy U/r 2 (T) = U 0 /r 1 (T), whereby we have, Eliminating V, U 0  and T between this equation and equation (9) we obtain, V out  = A log I+B where A and B depend upon T 0  and circuit parameters only (equations 17 and 18, not given). The range of V out may be controlled by r 3  and the zero by V 3 . The Specification describes a modification (Fig. 5, not shown) in which resistance 32 provides only partial feedback and the inductances of (wire-wound) resistors 26, 28 are compensated by a parallel-connected series RC circuit. In the circuit shown, the + input of amplifier 30 is a virtual earth, and this necessitates use of amplifier 46 to generate U. Fig. 6 shows an alternative which enables elimination of amplifier 46 and resistor 28. A theoretical account of the operation of this circuit is similar to what is given above and is fully set forth in the Specification. It is stated that the resistance of the copper wire wound resistors 26, 28 follows a temperature law r = 0À4176T - 14À18. For these resistors, a series combination of a wire-wound resistor of copper and a resistor having a resistance equal to about 14.2% of the resistance of the former and made of a low temperature-coefficient material, is used. The log transfer circuit 4 may consist of a diode or a PNP transistor instead of the NPN transistor shown.
Patent GB-1297937-A (GB)
IPC: B22D41/26
Filed: 1969-02-22
Abstract: 1297937 Valves for metallurgical ladles DIDIER-WERKE AG 17 Feb 1970 [22 Feb 1969] 9662/69 Heading F2V [Also in Division F4  A rotary valve for a bottom four metallurgical ladle comprises an upper stationary refractory plate member 5 and a lower rotary refractory member 6 with contacting flat surfaces 5<SP>1</SP> and 6<SP>1</SP> in a plane normal to the rotary axis X in which flow passages 7 and 8 through said members are such that flows of metal are substantially symmetrical about said axis for any operative position of said members and the lower member 6 is associated with an axial discharge nozzle 10. Flow passages 7, Fig. 3 increase in width in one direction and are diametrically opposite one another. The passages 8 comprise radial recesses in the inner wall of member 6. In a modification (Fig. 5), the passages 7 comprise two series of three separate openings of different sizes corresponding to throttled and fully opened valve positions. Member 6 and discharge nozzle 10 are disposed in a cast iron frame 11 mounted on bevel wheels 12 and rotated by a lever, a steel cable 14, Fig. 1, or by a ratchet and gear wheel. In a modification (Fig. 2), the frame 11 is carried by three brackets (13) attached to the ladle bottom. Members 5, 6 and 10 may be made of an erosion resistant material containing more than 80% Al 2 O 3 . The nozzle 10 may be lengthened to extend below the surface of metal being teemed e.g. into a tundish. The use of the shorter version, Fig. 1 requires the provision of metal caps 16 filled with insulating material 17 over the stub axles 12a.
Patent GB-1302344-A (GB)
IPC: B22D19/16
Filed: 1971-01-19
Abstract: 1302344 Casting composite rolls APV PARAMOUNT Ltd 2 Nov 1971 [19 Jan 1971] 2499/71 Heading B3F A roll having a cylindrical outer working face carried on a main barrel portion having end journal portions, is made by centrifugally casting a working face sleeve and subsequently casting metal into the sleeve to complete the roll. The sleeve 1 is removed from the centrifugal casting mould and allowed to cool prior to its being located within a static mould provided with an induction coil 8. The sleeve may be cast from two or more materials and may have its inner surface shaped so as to assist fusion and/or keying with the metal of the main barrel portion. Its length may be such that it continues part or all of the way along the journal of the roll. A plurality of sleeves may be cast integral with one another and separated prior to casting the metal of the main barrel portion therein. The static mould is made up of three parts and may have the induction coil assembly located within the mould material, Fig. 2 (not shown), the space between said assembly and the sleeve 1 being filled with cement (14).
Patent GB-1304523-A (GB)
IPC: B65D47/14
Filed: 1969-09-10
Abstract: 1304523 Paste dispenser METAL BOX CO Ltd 15 July 1970 [10 Sept 1969] 44753/69 Heading B8T A dispenser for paste comprises a nozzle 50, cap 51, hinge 60 and detent 64 integrally formed of resilient plastics material. The hinge 60 comprises two parallel arms each having a flexible portion and a rigid portion thereby defining a single hinge axis. When moving the cap 51 to close the nozzle 50, the detent 64 abuts the nozzle 50 thereby resisting closure until sufficient force is applied. Slight lifting of the cap 51 is required to engage a collar 58 about the upper wall of the nozzle 50 and the resultant stretching of the hinge 60 partially remains when the cap 51 is on the nozzle 50 producing a force which acts to keep the cap 51 in the closed position. Excess paste after dispensing is retained in a volume between the outer surface of the nozzle 50 and the inner surface of the cap 51.