baber/WOPTO huggingface dataset:
Patent GB-446390-A (GB)
Title: Bird scaring vane
IPC: A01M29/16
Filed: 1935-07-24
Abstract: 446,390. Bird-scares. BLAND, J., and BLAND, R. A., Claremont, Aughton Park, Ormskirk, Lancashire. July 24, 1935, No. 20989. [Class 6 (ii)] A bird-scare comprises a resonant chamber of square or polygonal section provided with resiliently mounted clapper bobs actuated by a wind - driven fan directed into the wind by a rudder fin, the chamber and fan having a lightreflecting surface. The resonant chamber may consist of a wooden or sheet-metal box or barrel 1 of tapering shape, having a fish-tail fin 3 attached to its outer end or lid 2. A tubular axle 6 carrying the fan 7 passes through a bush in a wooden bobbin 4 in the narrow end of the box. The fan may be formed by cutting four diagonal slits in a square sheet of metal and bending over the four leaves or vanes 7a thus formed into overlapping engagement with the end of the axle 6, which is passed through a central hole in the metal sheet. The vane ends are connected to the axle tip by two split pins. The clappers are arranged to make a variable and spasmodic sound. They may consist of wooden balls 11 secured on the unequal limbs 10 of a bent piece of spring steel passed through a peg 13 fitting in the rotary tubular axle 6 and secured by a bolt 14. The box 1 is suspended from a cord 17 by strings 16 engaging a bracket 15 or a swivel hook. The appliance is preferably made chiefly of sheet aluminium, the fan and box having a bright or polished surface and the rudder fin being coloured red, so that there may be a scintillating reflection of light from the vanes and a glare from the box and fin. The fan may be locked against rotation by a peg passed through an eye 19 on the bobbin 4 into one of a series of holes in the fan vanes.
Patent GB-694096-A (GB)
Title: Improved method of producing reinforcements for the edges and corners of suit-cases, trunks and the like
IPC: A45C13/36
Filed: 1949-08-12
Abstract: 694,096. Shaping corner reinforcements for trunks &c. MAOLER, E. M. Aug. 12, 1949, No. 21011/49. [A Specification was laid open to inspection under Section 91 of the Acts, Feb. 14, 1950]. Class 100(ii) [Also in Groups V and XVII] Reinforcements for the edges and corners of trunks, suitcases 19 or the like are made from angle or U-seation strip 10 of vulcanized fibre by bending the strip 10, the flange 11 of the strip, or flanges of the U-strip, of the strip parallel to the plane of bending being pressed in a known press between suitably corrugated dies into the form of corrugations 12 over the bending zone A, and the corrugations 12 are flattened by a further pressing operation. The other flange 11<SP>1</SP>, or the middle-section of the U-strip, is at the same time bent into a smooth curve. Continuous frame parts 14 and 15 may be provided-with corners 16, 17 successively in the same press and the frame parts then fitted to top 19 and bottom 18 of a trunk and are used to secure the end walls 21, 20 in position. A U-section strip may be severed longitudinally after pressing to provide two bent angle strips.
Patent GB-358581-A (GB)
Title: Improvements in or relating to drive mechanism for conveyor belts
IPC: B65G23/00
Filed: 1930-07-11
Abstract: 358,581. Pulleys. WHITE, A. E., 5, Quality Court, Chancery Lane, London.- (Robins Conveying Belt Co. ; Meade Avenue, Passaic, New York, U.S.A.) July 11, 1930, No. 21037. [Class 80 (i).] Driving mechanism for an endless belt conveyer of the kind in which a jockey pulley mounted on a pivoted arm is acted on by springs to press the return run of the belt against the driving pulley has the jockey roller 15 mounted on a frame 17 pivoted on a shaft 19 in the main frame 13 and pressed against the belt 10 and driving pulley 11 by springs 25 provided with adjusting means 24. The surface of the jockey roller is slightly concaved and is fitted with rubber rings 26 with tapered sides and preferably reinforced bases. The bases are lubricated to permit relative rotation between the rings and the roller. A toothed scraping plate 29 is mounted on the frame 17 to clean the gaps between the rings.
Patent GB-870854-A (GB)
Title: Axial flow compressors
Inventor: MORRIS RONALD EDWARD
IPC: F02C7/04
Filed: 1957-07-03
Abstract: 870,854. Axial-flow compressors; gas-turbine jet-propulsion plant. NAPIER & SON Ltd., D. May 28, 1958 [July 3, 1957], No. 21207/57. Classes 110 (1) and 110 (3). In a multi-stage axial-flow compressor including at least two rows of rotor blades 25, 26, Fig. 2, and at least two rows of stator blades 103, 39, respectively downstream thereof, the blades 39 are adjustable about substantially radial axes into one or other of two operating positions, in one of which they operate with maximum efficiency as normal stator blades, while the other position gives the maximum effective throat area between the blades. The compressor supplies air through a duct 16, Figs. 1A, 1B, to the main combustion chamber 17 of a jet-propulsion engine. The compressor is driven by a turbine 30 energized by a rocket system comprising catalytic decomposition chambers 31 in which hydrogen peroxide is decomposed to form oxygen-rich steam, some of the oxygen being used for combustion of paraffin in combustion chambers 32. The turbine exhaust passes through ducts 33 into the main air stream. At a sufficiently high speed, as sensed by a Mach meter 34, the engine is changed over from turbo-rocket to ram-jet operation. This is effected by shutting off the fuel supply to the rocket system, either manually or automatically. At the same time, an hydraulic servomotor 38 automatically turns the stator blades into the position of maximum throat area and moves flap valves 36 into the chain-dotted position to open a by-pass passage 35 around the compressor. The means for automatically operating the servomotor 38 may be responsive to the rotational speed of the turbine 30. During ram-jet operation, the compressor windmills in the air stream, a freewheel 28 permitting it to overrun the turbine. A desired shock pattern at the intake is maintained by means of a spill port controlled by flaps 44. Flaps 41 are closed during ram-jet operation but are opened during turbo-rocket operation to provide an additional air intake. The area of the jet nozzle can be adjusted by means of an axially movable bullet 20 which is connected to its operating ram 21 by means of a shaft 22 extending through the centre of the engine. Reference has been directed by the Comptroller to Specification 837,497.
Patent GB-951624-A (GB)
Title: Improvements in or relating to inserts for cutting tools
IPC: B23C5/20
Filed: 1960-06-16
Abstract: 951,624. Cutting tools. SANDVIKENS JERNVERKS A.B. June 16, 1960 [June 17, 1959], No. 21229/60. Headings B3B and B3K. A throw-away tip of regular polygonal shape has at each corner two chamfered cutting edges 13, 14 of equal length symmetrical about a line of symmetry 15. To machine a face 24 on a workpiece the approach angle v of the tip is chosen so that the cutting face 14 is parallel to the face 24, and the angle w is preferably half of the angle u. The tip is reversable so that the number of cutting edges available is equal to twice the number of corners on the tip.
Patent GB-827902-A (GB)
Title: Improvements in or relating to rectifier systems
IPC: H02H7/12
Filed: 1957-07-05
Abstract: 827,902. Protective cut-out arrangements. WESTINGHOUSE ELECTRIC CORPORATION. July 5, 1957 [July 12, 1956], No. 21298/57. Class 38 (5). In a rectifier system comprising a plurality of power rectifier units 14 connected in parallel and having an individual fuse 16 in series with each rectifier unit, the short-circuiting of any of the rectifier units 14 causes the associated fuse to blow and the resulting voltage across the fuse causes the energizing of a common relay 32 which is connected through rectifiers 28 to points between the power rectifiers 14 and the fuses 16. In the arrangement shown, the relay is connected between the load bus-bar 18 and an " alarm " bus-bar 26 by means of a filtering circuit comprising a capacitor 25 and resistor 24. The relay may have contacts 35, 37 and 39 to control the tripping of a circuit-breaker 4, the lighting of a signal lamp 36 and the sounding of an alarm 34. Figs. 2 and 3 (not shown) illustrate arrangements in which the rectifiers are supplied from single-phase power sources.
Patent GB-1384564-A (GB)
Title: Control apparatus for nuclear reactors
IPC: G21C9/027
Filed: 1972-05-08
Abstract: 1384564 Controlling reactors CLARKE CHAPMAN Ltd 4 April 1973 [8 May 1972] 21329/72 Heading G6C  Control apparatus for nuclear reactors comprises a U-shaped guide, a first limb of which guides a weight and the second limb of which guides a neutron-absorber element, the weight and the element being connected by a flexible member extending around the curved base of the U-shaped guide, means being associated with the first limb for holding the weight in an upper position prior to releasing it and for lifting the weight to restore it to its upper position. A reactor core 12 contained in a pressure vessel 10 has guide tubes 14 passing through it (only one shown) and each affords a passageway for entry of an absorber rod 18 into the core 12. One such rod is shown in retracted position at the entrance to the tube 14. The lower end of each tube 14 communicates with the limb of a U-tube 20, the other, longer limb of which extends upwardly past the core 12 towards the top of the vessel 10. Each absorber rod 18 is connected via two dummy elements in the form of rods 22, 24 to one end of a flexible steel strip 26 which extends around the curved base of the U-tube 20 and is connected at its other end to a rodshaped weight 28. The flexible strip 26 is provided with spaced pairs of rollers 30. The vessel roof 40 has a stepped opening 44, closed by a tubular plug 46 and seals at 48 and connected to a tubular duct 42 which in turn is connected to the upper end of the longer limb of the U-tube 20. The upper end of weight 28 is connected to the lower end of a tubular armature assembly 50. The annular armature proper (52) is releasably held by an annular electromagnet (54) (Fig. 2, not shown) which depends from the lower end of the plug 46. Also depending from the lower end of plug 46 is a tube 56 carrying at its lower end a tubular hydraulic shock absorber 58, a movable member of which is engageable by the annular under-surface of the armature (52). A re-cocking rod 70 extends through the plug 46 and has a disc (72) at its lower end engageable with the annular under-surface of the armature (52). In order to shut down the reactor quickly, the electromagnets (54) of all the control devices are de-energized so that the weights 28 are released and the absorber rods 18 are pushed up into the core 12. Where the apparatus is applicable as a primary control, additional mechanism is necessary for providing the normal control movements while the weight is effective, as already described, to move the control rod into the core in an emergency.
Patent GB-1349924-A (GB)
Title: Reversible winch
IPC: F16D48/02
Filed: 1972-05-08
Abstract: 1349924 Controlling winches CATERPILLAR TRACTOR CO 8 May 1972 [9 June 1971] 21418/72 Heading B8B [Also in Division F2] A reversible winch comprises a power input shaft 10 coupled to and winch drum 47 through a power input clutch 11, bevel gearing 15, 16, 17, first and second winch clutches 20, 25 and reduction gearing 33, the bevel gears 16-17 which are driven in opposite directions of rotation by the bevel gear 15, being selectively coupled through the clutches 20-25 to a shaft 19 forming the input for the reduction gear 33, to determine the direction of winch rotation. The clutches 11, 20, 25 are of the friction disc type, the power input clutch being normally disengaged but engaged by the supply of pressurized fluid thereto, and the winch clutches 20, 25 being normally engaged but disengaged by pressurized fluid. The clutches are controlled by a manual selector 50 which through the hydraulic system shown selects either a neutral position (N) whereby the winch clutches 20, 25 are engaged and the power input clutch 11 is disengaged and the drive shaft 19 becomes locked, a reel-out position (O) whereby one winch clutch is disengaged and the input clutch is engaged and the drum 47 is driven to pay out cable, a reel-in position (I) whereby the other winch clutch only is disengaged and the input clutch is engaged to reel in cable on the drum, and a free spool position (F) wherein all the clutches are disengaged for free drum rotation. Movement of the handle 50 simultaneously mechanically controls the spools within a pressure control valve 57 and a selector control valve 58. The system is supplied with pressurized fluid from a sump 60 by a positive displacement pump 61 driven by the engine driving the power input shaft 10, the fluid being fed through a directional control servo valve 65 to the selector valve 58 for supply to the clutches 11, 20, 25 and to a pressure modulating valve 75. The latter is a spring biased spool valve operated by fluid pressure obtained from the pressure control valve 57. A lubrication system 81 for the apparatus is supplied with fluid from the pressure control valve 57. Inching control of the winch by means of slipping the clutches by restricted movement of the spool of the pressure control valve 57, can only be achieved if system pressure is low due to low speed of the engine driving the pump 61, since with high system pressure the valve 65, constantly communicates full system pressure to the clutches irrespective of the position of the pressure control valve 57. In the embodiment of Fig. 6 (not shown), the drive system omits the pressure modulating valve and includes a normally engaged, fluid pressure disengaged brake for the input shaft associated with the winch clutches, the brake being slippable to permit inching control of the winch.
Patent GB-671959-A (GB)
Title: Improvements in or relating to master-cylinders for hydraulic brakes
IPC: B60T11/224
Filed: 1949-08-18
Abstract: 671,959. Fluid-actuated valves. BOLSEZIAN, G., and STOP SOC. AR.L. Aug. 18, 1949, [Aug. 20, 1948], No. 21478/49. Class 135 [Also in Group XXXIV] A valve for controlling the flow through a passage in the piston of a master cylinder for hydraulic brakes is moved from the closed position shown in Fig. 4 to the open position shown in Fig. 5 when the pressure on one side of the piston becomes sufficient to flex radially the end of a coiled spring 21 out of a groove 22. The valve is reclosed by contact of the end 16 with a fixed abutment.
Patent GB-239220-A (GB)
Title: Improvements in and relating to thermo-electronic devices
IPC: H01J1/18
Filed: 1925-08-27
Abstract: 239,220. British Thomson-Houston Co., Ltd., (Assignees of Hendry, J. F.). Aug. 28,1924, [Convention date]. Vacuum tubes.-In a thermionic valve a metallic screen is attached to the cathode support to protect the dielectric of the support from electrionic bombardment. In the construction shown in Fig. 1, the filament 4 is supported by a hooked rod 8 the upper end of which is embedded in a piece of quartz 9, the quartz in turn being secured to a disc 7 forming part of the frame on which the grid is wound. A metallic shield 12, having a central perforation through which the quartz 9 projects, is secured to the plate 7, and another metal disc 14 is secured to the rod 8 between the filament and the quartz. The discs 12 and 14 shield the quartz from electronic bombardment and prevent it from disintegrating. In a modification, the discs 12 and 14 are replaced by a cup-shaped shield which is secured to the rod 8 and surrounds the end of the quartz member.
Patent GB-975080-A (GB)
Title: Production of cellular polyurethane material
IPC: B29B7/40
Filed: 1963-05-30
Abstract: Cellular polyurethane materials are formed by mixing under pressure (see Division B1) two polyurethane forming components and injecting a volatile liquid blowing agent at such a rate that the resulting polyurethane froth moves through the discharge nozzle with laminar flow and preferably at constant velocity. In an example the first component consists of 75 parts of polyisocyanate ingredients (comprising 80 parts of 2,4-toluene diisocyanate and 20 parts 2,6-toluene diisocyanate) and 25 parts polyether ingredients (containing 1 cresol of sorbitol per 10 mols propylene oxide).  The second component consists of 30 parts of the above polyether ingredient and 29.5 parts of an activator mixture (comprising 26 parts N,N,N1, N1-tetrakis (2-hydroxypropyl) ethylene diamine, 3 parts triethylene diamine and 0.5 parts emulsifiers made up of 80% propylene glycol and 10% polyethylene glycol). The components in the preparation of 100 parts of the first and 59.5 parts of the second are supplied to the mixing chamber into which 20 parts difluorodichloromethane are also injected (all proportions are by weight). The mixture expands from 100 p.s.i. and 72 lb./cu.ft. in the mixing chamber to 2.5 lb./cu.ft. atmospheric pressure and is further expanded in the second by the heat of reaction to 1.7-1.8 lb./cu.ft.
Patent GB-952069-A (GB)
Title: Bunkers for particulate materials
IPC: B28C7/00
Filed: 1960-06-21
Abstract: 952,069. Framework for hoppers. ELBAWERK ETTLINGER BAUMASCHINENUND HEBEZEUGFABRIK G.m.b.H. June 21, 1960 [Sept. 5, 1959], No. 21679/60. Addition to 841,187. Heading B8S. A hopper framework has a base 5 which carries supports 13, 12 of which the upper parts 12 telescope in the lower parts 13 and carry frame 15. Each support has two parts so that (Fig. 4) a bunker wall 10 made of planks 8 can be supported between the two parts to form a bunker having four compartments 10<SP>1</SP>, the front of the compartments having a wall formed of further planks 8 and supported by the detach able feet 24, 25 of base 5. A loading arrangement is supported on frame 15 and serves to feed concrete ingredients from the individual compartments via the respective valves 6 to the weighing hopper 20. Shoot 22 for supplying cement is secured to base 5 and is detachably secured to hopper 20 at 23. The framework is adapted to be hauled as a trailer to the required site.
Patent GB-868024-A (GB)
Title: Production of condensation products of aliphatic alcohols
Inventor: ADDY LESLIE ERNEST
IPC: C07C45/29
Filed: 1958-07-07
Abstract: Condensation products (ketones and carbinols of increased molecular weight) are prepared by contacting an aliphatic monohydric secondary alcohol of up to 6 carbon atoms in the vapour phase at elevated temperature with a supported metallic nickel catalyst promoted with an oxide, hydroxide or salt with a weak inorganic or organic acid of calcium, strontium, barium, magnesium or beryllium.  The starting alcohol may be mixed with the corresponding ketone, which may be that produced as byproduct and recycled.  Inert solvents or gases may be present.  A hydrogen acceptor such as an olefinic, acetylenic or aromatic hydrocarbon, or quinone may be present (see Specification 880,406).  Reaction temperatures of 100-300 DEG C. are mentioned. The catalyst may be promoted by impregnation of, coprecipitation with or mechanical mixing with supported nickel oxide followed by reduction.  In the process of the invention, isopropanol yields, in addition to acetone, mainly methyl isobutyl ketone and methyl isobutyl carbinol and some diisobutyl ketone.ALSO:A supported metallic nickel catalyst is promoted with an oxide, hydroxide or salt with a weak acid (e.g. carbonate, bicarbonate, acetate) of calcium, strontium, barium, magnesium or beryllium, or a mixture of such compounds.  Magnesium compounds, particularly magnesium hydroxide, are preferred.  The catalyst may be impregnated with an aqueous solution of a magnesium salt yielding the oxide on heating, followed by drying, heating and reduction with hydrogen; or the catalyst may be prepared by co-precipitation of magnesium hydroxide and nickel hydroxide on the support, or by mechanically mixing magnesia, magnesium hydroxide or compounds yielding the oxide on thermal decomposition, with the support, followed by pelleting, thermal decomposition where necessary, and reduction.  In an example nickel oxide/kieselguhr pellets are impregnated with aqueous magnesium nitrate, the moist mass is exposed to ammonia vapour, washed, dried at 120 DEG C. and reduced with hydrogen at 300-340 DEG C.
Patent GB-750893-A (GB)
Title: Improvements in or relating to the manufacture of sectional heat-exchangers
IPC: B21D53/04
Filed: 1952-08-29
Abstract: 750,893. Making heat-exchangers. BINDER, H. G. Aug. 28, 1953 [Aug. 29, 1952], No. 21780/52. Classes 83 (2) and 83 (4). [Also in Group XIII] Welding by pressure.-A method of making a sheet metal heat exchanger or radiator section consisting of two half-sections a, b formed by stamping, comprises applying a lining i of another metal before or after stamping, clamping the half-sections together with their flanges r lying snugly against each other, and welding, brazing or soldering the flanges and any stiffening ribs s together. The lining may be applied by dipping or by electrolytic deposition in which case the flange and stiffening ribs are masked to prevent deposition of the coating thereon when the half-sections are to be resistance welded together ; alternatively the lining may comprise inner half-shells stamped simultaneously with or separate from the half-sections. The latter may be stamped by the method described in Specification 515,959 and the two shells may be welded together by resistance welding using roller electrodes as described in Specification 645,487. The half-sections may be of steel and the lining of tinned copper sheet or foil, and brazing material in foil or paste form may be inserted between the flanges of the lining so that the heat of the resistance welding will effect the brazing or soldering of the lining. The flanges of the lining may be stopped short of the welding track of the roller electrodes so as to prevent burning of the lining. Alternatively, the lining may be of stainless steel, cupro-nickel, nickel, silver or aluminium. Specifications 385,608, 495,445, 511,522, [both in Group XIII], 540,051 and 541,497 also are referred to.
Patent GB-1043657-A (GB)
Title: Electrically resistive body
IPC: H01C1/142
Filed: 1965-05-24
Abstract: 1,043,657. Resistors. BROWN BOVERI & CO. Ltd. May 24, 1965 [May 26, 1964], No. 21825/65. Heading H1S. A disc &c. shaped resistor of ceramic material containing electrically conductive constituents (e.g. carbon) has an integral zone extending inwards from its curved surface in which zone there are no conductive constituents. Metal terminal layers covering the flat ends of the resistor extend outwards to the inner edge of this zone which may be produced by heating the body briefly in an oxygen-containing atmosphere. A composite resistor may be formed by putting a stack of these resistors in a sealed housing with their terminal layers in contact.