baber/WOPTO huggingface dataset:
Patent GB-1381646-A (GB)
Title: Aircraft with short take-off and landing characteristics
IPC: B64C23/00
Filed: 1972-09-29
Abstract: 1381646 Deflecting propulsion jets VEREINGTE FLUGTECHNISCHE WERKEFOKKER GmbH 29 Sept 1972 [5 Oct 1971] 45174/72 Heading B7G A S.T.O.L. aircraft having jet propulsion engines (not shown) mounted on arms at positions forward of and above the wing 1 is provided with at least two flaps 4, 5 which may be extended from within the wing profile to deflect downwardly the propulsion jets. Flap 5 is pivoted at 13 at the wing trailing edge and moved by an actuator 14 and flap 4 is carried on flap 5 by a linkage 20, 21 and positioned upon movement of flap 5 by a link 23 connected to the wing at 24. End plates 12 are provided to confine the jet gas laterally.
Patent GB-923849-A (GB)
Title: Method of producing molding resin color concentrates
IPC: C08K5/103
Filed: 1961-12-20
Abstract: A non-dusting uniform mixture of thermoplastic resin granules and a powdered pigment is made by attaching the pigment powder to the resin granules with sucrose diacetate hexaisobutyrate.  The resin exemplified is polystyrene but listed also are polyolefins and copolymers of styrene with alkyl acrylates and methacrylates, acrylonitrile and butadiene.  The sucrose ester is preferably present in an amount of 0,5 to 3 parts per 100 parts of resin and the pigment is present up to 20 parts by weight.  A p  plasticizer which dissolves the sucrose ester, such as dioctyl phthalate, may also be present.  The composition is used as a colour masterbatch for polystyrene.  The pigments may be inorganic or organic colouring materials.
Patent GB-1061280-A (GB)
Title: Improvements in or relating to cut-off valves
Inventor: SPALDING ROBERT GEORGE
IPC: F16K1/12
Filed: 1964-11-10
Abstract: 1,61,280. Fluid-pressure servomotor systems. WAYNE TANK & PUMP CO. Ltd. Nov. 10, 1965 [Nov. 10, 1964], No.45840/64. Heading G3P. A valve in a liquid supply line is closed automatically when the flow in the outlet falls below a predetermined valve. The valve comprises a housing 1 having a valve seat 5' which co-operates with a valve closure 5, connected to a piston 6. The piston 6 is slidable in a cylinder 2 and is loaded by a spring 7 towards the closed position. A rod 9 extends through the cylinder and valve and has a passage 10 whereby the upstream side of the valve can be connected to the interior of the cylinder through a port 8. The interior of the cylinder is also connected to the downstream side of the valve through a passage 18, valve 42, valve 21 and passage 20. The valve outlet has hinged apertured vanes 38 and the pressure on opposite sides of the vanes are fed through passages 35, 36 to opposite sides of a diaphragm 31 which can act on the valve 21. To open the valve, a handle rotates a lever 15 to move rod 9 to close the passage 10 and at the same time rotates a shaft 24 to cause lever 22 to open valve 42 and lever 23 to release valve 21. The closing of valve 21 is restricted by a dashpot 27 and liquid can thus escape from the cylinder 2 to the downstream side and the valve 5 opens. The valve 5 assumes a position relative to rod 9 where the flow into the cylinder 6 is equal to the outflow. The flow through the outlet causes diaphragm 31 to hold valve 21 open unless the flow falls below a predetermined valve which will allow spring 29 to close valve 21 and consequently valve 5.
Patent GB-1078868-A (GB)
Title: Heat exchange column
Inventor: DREHER HANS GEORG
IPC: F28F21/02
Filed: 1964-11-12
Abstract: 1,078,868. Heat exchange blocks. D. SCHWEMANN, W. ALTHOFF, and G. F. ALTHOFF. Nov. 12, 1964, No. 46108/64. Heading F4S. A heat exchange column comprises graphite blocks having channels, conveying two heat exchange media, passing behind one another, each block has a diversion element which diverts one group of channels in a direction parallel to the other group of channels. One embodiment, Fig. 1, comprises two parts 1, 2 having vertical channels 4 and horizontal channels 6, the channels 6 opening into a bore 10 to direct the flow parallel to the channels 4. The column may be built up of circular cross-section blocks, Figs. 2 and 3 (notshown), horizontal channels extending from a plane face at a distance from the axis of the cylindrical block to open into peripheral diversion chambers. The cylindrical heat exchanger may be constructed with diversion elements alternating with the heat exchange blocks, Fig. 4 (not shown), said blocks being formed with truncated conical recesses in the upper and lower surfaces, the channels of the block being at an angle to the axis, those in the diversion elements being parallel to said axis. In this embodiment heat, exchange also takes place due to counterflow in adjacent parallel channels. Square cross-section blocks may be used in a similar manner, Fig. 6 (not shown).
Patent GB-1075865-A (GB)
Title: Improvements in and relating to machines for forming helical grooves in cylindrical work
IPC: B23C3/32
Filed: 1964-11-13
Abstract: 1,075,865. Milling. CARL HURTH MASCHINEN - UND ZAHNRADFABRIK. Nov. 13, 1964 [Dec. 13, 1963], No. 46278/64. Headings B3B, B3D and B3K. [Also in Division F2] A machine for milling or grinding helical grooves comprises an indexable work-head and a cutter 25 mounted for angular adjustment and traversable to machine the grooves The cutter 25 is rotated by a motor 28<SP>1</SP> through infinitely variable gearing or synchromesh gears 30 and belt gearing 33. The drive may include a flywheel or a vibration damping device. The cutter spindle 26 is mounted in a quill 27 which can be adjusted axially in a head 22 which is adjustable angularly on a slide 20 adjustable vertically in a slide (18) which can be fed parallel to the work axis. The tool is relieved on a non-cutting stroke by a lever 37 operated by fluid-pressure means 42 which raises the head 22. Each groove is cut in two passes, the depth of the first cut being determined by a stop, acting on the lever 37, which can be retracted by a solenoid, and the final depth and retracted positions being determined by stops adjusted by a screw having threaded portions of opposite hand. The movements of the lever 37 are transmitted to the head by way of rollers 56, 57, 58 and backlash is eliminated by springs. In a modification, the tool is moved axially for relief by a cam 72, Fig. 5 (not shown), acting through a double-lever (67, 77), the fulcrum (73) of which can be adjusted by a rack-and-pinion (74, 76). A spring (70) eliminates backlash. A roughing pass may be followed by separate finishing passes for each side of a groove. In a further modification, the spindle is carried on an axially-movable slide instead of in a quill.
Patent GB-1206958-A (GB)
Title: Acid stabilization and base reactivation of water-soluble wet-strength resins
Inventor: EARLE RALPH HERVEY JR
IPC: C08G69/48
Filed: 1967-10-10
Abstract: 1,206,958. Paper. HERCULES, Inc. 10 Oct., 1967, No. 46326/67. Addition to 1,129,065. Heading D2B. [Also in Division C3] A wet-strength additive used in paper making comprises an acid stabilised, base reactivatable resin prepared by first reacting a polyalkylene polyamine containing two primary amine group and at least two secondary amine groups with diglycolic acid or a C 3-8  saturated aliphatic dicarboxylic acid in a mole ratio of polyamine to dicarboxylic acid of 0.8:1 to 1.4:1. The resultant water-soluble polyamide is reacted with epichlorohydrin to form an aqueous solution of a cationic thermosetting resin which contains epoxy groups and chlorohydrin groups. This resin is finally reached in aqueous solution with 0.3 to 1.2 equivalents (per equivalent of epichlorohydrin) of a water soluble acid to reduce the final pH to 2 or less; this converts a substantial portion of the epoxide groups to aminochlorohydrin acid anion groups and stabilises any groups containing an epichlorohydrin moiety at the chlorohydrin stage as the aminoepichlorohydrin acid anion. A typical polyamide is prepared from diethylenetriamine and adipic acid. Examples of acids for the final stage are hydrochloric, hydrobromic, hydrofluoric, hydroidic, sulphuric, nitric, phosphoric and acetic acids. The resin may be reactivated by adding a base, e.g. from 0.25 to 2.5 equivalent of NaOH per equivalent of acid used in the final step. Examples relate to the use of 2% solutions of these resins which are added to bleached kraft pulp in a cycle beater from which handsheets are prepared. Tests relate to the wet strength of uncured sheets and sheets which have been cured for one hour at 105‹C.
Patent GB-1492557-A (GB)
Title: Semiconductors
IPC: H01L31/00
Filed: 1974-10-28
Abstract: 1492557 Semiconductor devices GENERAL ELECTRIC CO 28 Oct 1974 [30 Oct 1973] 46535/74 Heading H1K [Also in Division B1] A semiconductor device 30, such as a radiation detector for X-rays, infra-red or visible light, consists of a semiconductor body 10 through the thickness of which extend a plurality of columnar regions 32 forming PN junctions 34 with the body 10. The regions 32 are formed by thermomigration of droplets of a melt comprising the semiconductor material and a dopant metal which is initially deposited, e.g. by sputtering or vapour deposition, at spaced areas of one of the major surfaces of the body 10. The droplets migrate towards the high temperature end of a temperature gradient established across the body 10. Preferably the regions 32 are of equilateral triangular crosssection and are arranged in a regular hexagonal array as shown. In order that the originally deposited metal layers may remain properly located on the surface they may be alloyed therewith prior to thermomigration. For an N-type Si or Ge body 10 the migrated dopant metal may be Al, Al/Sn or Al/Pb. Other semiconductors mentioned are SiC, III-V compounds such as GaAs and II-VI compounds.
Patent GB-1404583-A (GB)
Title: Urea compositions and methods of preparation thereof
IPC: A61Q17/04
Filed: 1971-10-08
Abstract: 1404583 Compositions containing carbamide VYMATT SA 8 Jan 1973 [8 Oct 1971] 46853/ 71 Heading A5B A pharmaceutical composition for external application to human skin comprises carbamide adsorbed on to a water-insoluble powder matrix, which powder is dispersed in a non- aqueous liquid, semi-solid or gel substance, the pH of the composition being between 5 and 8. The composition may also contain hydrocortisone, fluorinated corticosteroids or other ingredients for the treatment of inflammation.
Patent GB-1024922-A (GB)
Title: Improvements in or relating to travelling wave tubes
IPC: H01J23/027
Filed: 1963-11-27
Abstract: 1,024,922. Travelling-wave tubes. LITTON INDUSTRIES Inc. Nov. 27, 1963 [Nov. 30, 1962], No. 46869/63. Heading H1D.  The collector of a crossed-field travelling wave tube comprises two or more collector electrodes arranged for selective collection of electrons according to their energy on entering the collector region. This prevents electrons arriving at the collector with a high kinetic energy, and hence reduces collector heating. In the forward wave amplifier shown a " depressed collector " electrode 20 is maintained at cathode voltage and the two collectors, 20 and 19, diverge to give a decreasing ratio of electric to magnetic fields in the beam direction and so deflect high energy electrons on to the " depressed " collector 20. Subsequently the two collectors converge, to deflect the remaining low energy electrons on to the conventional, slow-wave structure voltage collector 19. Deflection may alternatively be obtained by increasing the magnetic field along the collector. In an alternative embodiment, an abrupt change of distance is provided between the mutually facing electrode surfaces in the collector, producing a smooth continuity in the ratio of the electric to magnetic field strength. In a further embodiment, Fig. 9 (not shown), the depressed collector electrode is wedgeshaped and positioned adjacent a further electrode, maintained at the potential of the sole electrode. The position of the depressed collector 20, and hence the field strength in the collector, may be adjusted by a screw, diaphragm 34, and rod 29.
Patent GB-1411819-A (GB)
Title: Magnetic device having domains
IPC: G11C11/14
Filed: 1972-10-11
Abstract: 1411819 Magnetic storage arrangements PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 11 Oct 1972 [14 Oct 1971] 46905/72 Heading H3B A thin film layer of magnetic material having an easy magnetization axis perpendicular to its plane and capable of supporting cylindrical magnetic domains has an alternating magnetic field applied along the easy axis, the frequency of the field being higher than that of a further alternating field used to propagate or otherwise, displace magnetic domains in the layer. The layer, which may be of YbFeO3, may have a permalloy T-bar overlay, Fig. 1 (not shown), along which domains are propagated by an inplane rotating field of frequency f, the frequency of the field parallel to the easy axis being greater than this value, for example 2f. The arrangement is stated to permit the use of a higher inplane field frequency so as to increase the speed of domain propagation. In a modification, Fig. 2 (not shown) domains are propagated by the use of an angel fish overlay structure, the two alternating fields acting parallel to the easy axis and the frequency difference between the two fields being at least a factor of three. In a further arrangement, Figs. 3a and 3b (not shown), an alternating distance separation between two domains is obtained by the use of one alternating field, of e.g. 1000 Hz, having a strength which varies linearly along the plane of the layer, and another alternating field parallel to the easy axis and of higher frequency, e.g. 5000 Hz.
Patent GB-1393019-A (GB)
Title: Mining machine-driving arrangements
IPC: E21C29/16
Filed: 1972-10-13
Abstract: 1393019 Mining equipment-driving arrangements COAL INDUSTRY (PATENTS) LTD 5 Oct 1973 [13 Oct 1972] 47270/72 Heading E1F In a mineral-mining installation involving a mining machine hauled by a chain 2 along a conveyor, a releasably locking means is provided on the head frame 5 of the conveyor for selective prevention of rotation of the drive sprocket 4 for the chain. Preferably the means comprises a keep pin that, when inserted into a recess. 9 in the head frame, abuts a tooth of the sprocket. The recess 9 may be formed in a plate 9 secured to the wall of the head frame.
Patent GB-1085760-A (GB)
Title: Apparatus for producing contact between the ambient air and a liquid hurled thereinto in the form of fine droplets
IPC: B01F3/04
Filed: 1964-11-20
Abstract: <PICT:1085760/C1/1> <PICT:1085760/C1/2> <PICT:1085760/C1/3> Apparatus for the surface aeration of sewage in a tank comprises a rotatable agitator disc 22 mounted at the liquid surface above an uptake chamber 25, and having detachable projections 24 (which may be rubber spheres) dipping into the liquid.  In operation liquid spray is projected radially outward and entrained with air induced down the trunk 31 and under the fixed annular disc 26 by fins 221 on the upper surface of the disc 22.  A fixed annular disc 28 forms a spray shield and reduces foaming.  The height of the agitator disc 22 and driving motor 11 relative to the liquid surface is adjustable, as is the height of the annular discs 26, 28 relative to the agitator.  The apparatus may be incorporated in an installation for purifying sewage, see Fig. 6, in which it is pumped from a sump 33 to a sand removal tank 36, screen filter 37 and constant delivery tank 32; after treatment the water passes to a primary decanter 42 whence the sludge may be recycled through pipe 45.
Patent GB-1397836-A (GB)
Title: Transistor circuit
IPC: H03K4/60
Filed: 1972-10-13
Abstract: 1397836 Transistor switching circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 Oct 1972 [16 Oct 1971 12 April 1972] 47347/72 Heading H3T In a circuit arrangement including a transistor 6 having means 1 for applying a switching signal between the base and emitter and a load impedance 7 connected to the collector of the transistor, a diode 12 is provided between the base and emitter, the conductivity direction of the diode is opposite to that of the baseemitter junction of the transistor and at least one impedance 13 is arranged in series with the diode 12 and by which impedance the diode is brought to the conducting state after a minimum delay time of 1 ÁS. As shown the output transistor 6 is part of a sawtooth generator such as a horizontal deflection generator in a T.V. A squarewave signal from an oscillator feeds the transformer 1 and the negative voltage part of this signal brings the transistor 6 to the non- conducting state when the flyback period is initiated. A half oscillation follows during the flyback period in the deflection circuit 7 and the collector-base diode of the transistor 6 conducts so that the transistor operates in the inverse anode during the first half of the scan period. After a delay of at least 1 ÁS provided by inductors 13 such as ferrite beads the diode 12 conducts to limit the voltage at the base of the transistor 6 during inverse operation to obviate high dissipation produced in the base-emitter diode of the transistor 6. The delay may alternatively be provided by a saturable inductor (14, Fig. 2, not shown). In a further modification an additional transistor (17, Fig. 3, not shown) is connected in series with the diode 12 and is controlled by a suitable switching voltage from an additional winding on the output transformer so as to be non-conducting during the switching off of the transistor 6 and conductive during the inverse operation of the transistor 6. In this arrangement the diode 12 may be omitted and the base-emitter junction of the additional transistor 17 then provides the diode action and the collector-base diode forms the impedance.
Patent GB-1431247-A (GB)
Title: Hydraulic control circuit with remotely controlled dual pressure relief valve
IPC: B60D1/01
Filed: 1974-11-01
Abstract: 1431247 Earth-moving scraper bowls CATERPILLAR TRACTOR CO 1 Nov 1974 [2 Nov 1973] 47410/74 Heading E1F [Also in Division F1] In the earth-moving scraper bowl circuit shown, Fig. 2, a pilot operated dual pressure relief valve 35, which is connected between an inlet passage 29 and a drain passage 34 of a pilot operated spool valve 31, normally provides a relatively low pressure for extending a ram 22 to lower a latch 18 and a relatively high pressure when the ram is contracting to raise the latch. When the latch approaches the raised position shown, a lug 73 operates a pilot valve 36 to cause the valve 35 to provide the lower pressure. Valve 35 has a poppet 62 which is biassed for the low pressure supply by a spring 63 and for the high pressure supply by the spring 63 and inlet pressure which acts on a piston 64 through conduit 68, pilot valve 36, conduits 69, 38 and port 37 of valve 31. The spool 42 of the latter is biassed by a spring 44 and moved to the left by pilot pressure controlled by a valve 33. A pressure regulating valve 32 is provided in the valve 31. The dual pressure relief valve 35 includes a dump spool 52 with metering slots 58 and a metering orifice 59. When spool 42 is moved to the left to supply fluid from passage 29 to the head end of the jack 22 to lower the latch 18, service post 37 is communicated with a drain passage 74, flow being regulated by a dual rate relief valve 76. Orifices 79 in a shuttle 77 regulate the rate of descent of the latch. If external forces act on the latch and move it downwards more rapidly, the shuttle 77 moves to the left to provide rapid relief by way of slots 81, Figs. 3-6, (not shown), illustrated modified circuits which operate in a similar manner to that shown in Fig. 2. The circuit is described in connection with a coupling for two tractors.
Patent GB-1223735-A (GB)
Title: Improvements in or relating to gyratory crushers
Inventor: KEMNITZ ROBERT HAROLD
IPC: B02C2/04
Filed: 1968-10-07
Abstract: 1,223,735. Gyratory crushers. ALLIS-CHALMERS MFG. CO. 7 Oct., 1968 [12 Oct., 1967], No. 47414/68. Heading B2A. To accommodate initial overload caused by tramp material, a gyratory crusher head 58, Fig. 1, is supported relative to a bowl 30 by an elastomeric e.g. rubber pad 56 between the head and its support. The support comprises a post 34 with a head 36 and a bronze bearing plate 54 to which the pad 56 is secured e.g. by vulcanizing and which has radial slots 55 to permit lubrication via a tube 48. Other embodiments omit the plate 54 and may comprise a conical or spherical upper-surfaced elastomeric pad mounted directly on a head portion 90 of a crusher post 88, Fig. 2. The crusher includes a known hydraulic overloadprotection system.
Patent GB-1267490-A (GB)
Title: Improvements in door, panel and window assemblies
Inventor: MAERTIN KLAUS PAUL
IPC: E05D7/08
Filed: 1969-02-20
Abstract: 1,267,490. Self-closing door. K. P. MAERTIN and S. C. COMBS. 20 Feb., 1969 [21 Feb., 1968; 9 May, 1968], No. 47746/71. Divided out of 1,265,871. Heading E2M. In a single swing door assembly, the upper and lower pivots are positioned so that the upper pivot point 40 is located nearer the centre of gravity of the door than the lower pivot point 37 and the pivot points are also offset horizontally with respect to the planar major surfaces of the door with the lower pivot being positioned nearer than the upper pivot to that side of the doorway toward which the door opens. The pivots may be contained in the plane of the door, as shown, or may be carried on blocks or lugs which extend away from the door. A ball bearing 38 may be located between the pin 32 and the end of corresponding socket 37. The pivots have sufficient tolerance to allow the door to tilt when opened.
Patent GB-1122384-A (GB)
Title: Dispensing system for carbonated beverages
Inventor: PORTER THOMAS
IPC: B67D1/04
Filed: 1964-11-25
Abstract: 1,122,384. Dispensing beverages. PORTER LANCASTRIAN Ltd. 24 Nov., 1965 [25 Nov., 1964], No. 47865/64. Heading A4T. [Also in Division F1] In a beverage dispensing system having a diaphragm pump 2 supplied with beverage under pressure, the supply of beverage to the compartment 10 is opposed by a counter-pressure to prevent gas in the beverage coming out of solution and the supply of gas actuating the diaphragm 4 is terminated when a predetermined quantity of beverage has been dispensed. The pump delivery is under the control of a compressed air actuated tap and the supply of compressed air to the diaphragm 4 is controlled by the solenoid actuated valve 16. The tap is under the control of a solenoid actuated valve and this valve and the valve 16 are operated by means of a relay in an associated electrical circuit when the compartment 10 is full of beverage. The dispensing is terminated when spaced contacts on the spindle 6 actuate the relay in the associated electrical circuit. This electrical control may be as described in Specification No. 1,067,865. The counterpressure is applied to the beverage by throttling the exhaust of the compressed gas from the chamber 8 through the adjustable throttle valve 24 as the beverage enters the compartment 10 or by providing a spring between the diaphragm 4 and the pump casing or a dashpot connected to the spindle 6.
Patent GB-1026894-A (GB)
Title: Improvements in or relating to astable multivibrator circuit arrangements
Inventor: SWIFT PETER
IPC: H03K3/282
Filed: 1964-11-25
Abstract: 1,026,894. Transistor multivibrators. MULLARD Ltd. Nov. 25, 1964, No. 47909/64. Heading H3T. An astable multivibrator is provided with a pair of diodes 9, 10, connected in series opposition between the collectors of transistors 1, 2 and a further pair of diodes 13, 14 in series opposition connected between the bases in such a way as to facilitate starting and voltage-control of frequency. Any tendency for the circuit to remain in a non-oscillating state with both transistors bottomed results in diodes 9, 10 becoming conductive and feeding a voltage via an emitter follower 15 and diodes 13, 14 to the bases of transistors 1, 2 so as to reduce the forward bias of the transistors. When the circuit is oscillating normally, the positive potential at point 11 reverse biases diode 13, 14. The frequency is adjustable by variation of supply voltage +V 2 .