baber/WOPTO huggingface dataset:
Patent GB-1025592-A (GB)
Title: Improvements in and relating to power end stages for operating regulating units of automatic control systems
IPC: H03K17/73
Filed: 1963-02-14
Abstract: 1,025,592. Transistor switching circuits. E. KIEBACK, and P. PETER. Feb. 14, 1963 [March 27, 1962], No. 5986/63. Heading H3T. [Also in Divisions G3 and H2] An automatic control system comprises a phase sensitive rectifier controlling through a rectifier-shunted potentiometer the circuit two thyristors or equivalent semi-conductor devices so arranged that neither, or one, or the other is conducting depending upon the amplitude and sign of the D.C. output voltage from the rectifier. In the embodiment a D.C. control voltage derived from a phase sensitive rectifier (not shown) and depending for example on a temperature sensing element arranged in a bridge, is applied to terminals 1, 2. When terminal 1 is positive with respect to 2, resistor R 1  is shorted by a rectifier D 1  so that substantially all of the voltage is developed across R 2  and this is applied to the gate of a thyristor T 1  (or an equivalent device formed by crosscoupled complementary transistors) and if the voltage is larger than a bias voltage U 2  applied across R 5  the thyratron " fires." Firing is assisted by applying a rectified but unsmoothed A.C. voltage to terminals at U 1  so that the positive peaks inhibit firing which accordingly occurs only at the zero points of the A.C. The gate current which flows in the conducting transistor (T 1 ) also flows through R 2  to increase the firing signal and the current through R 6  produces a reverse gate voltage for T 2  holding it more firmly not conducting. A capacitor C 3  prevents this voltage being built up until T 1  is fully on. The supply V 3  is a pulsed D.C. voltage so that when the control signal decreases sufficiently T 1  extinguishes and does not refire on the next pulse, the level at which this occurs being lower than that at which it fires due to the positive feedback voltage produced, as previously described, by the gate current. Transistor T 2  is similarly controlled by a control voltage U 4  of the opposite sense. The loads A and L may be relays, lamps, D.C. motors or may be electromechanical valves for controlling the temperature being sensed.
Patent GB-1113717-A (GB)
Title: Aircraft fire prevention system
IPC: A62C3/08
Filed: 1967-02-08
Abstract: Structural overstressing in the fuel line of an aircraft is detected by a system in which a pneumatic tube, more readily frangible than the fuel line and lying parallel thereto, on breaking causes the operation of a response means, specifically the closure of a normally open shut-off valve in the fuel line. The release of pressure in the pneumatic tube on breaking may move a diaphragm into contact with means which operate closure of the valve.
Patent GB-1535825-A (GB)
Title: Adhesively-attachable load-bearing support pad for containers
IPC: B65D19/40
Filed: 1976-02-17
Abstract: 1535825 Bearer for pallet FIAT ALLIS CONSTRUCTION MACHINERY Inc 17 Feb 1976 06167/76 Heading B8H A bearer 36 for a load handling pallet comprises a plurality of layers of corrugated cardboard 40 arranged with the spaces therein and between extending vertically, a sheath 42 extending around the layers, and a layer of pressure-sensitive adhesive 52 covered by a protective sheet 54. In an alternative embodiment, Fig. 5 (not shown), the sheath is replaced by upper and lower sheets (63), (65). In a still further embodiment, Fig. 6 (not shown), a strip (80) of corrugated board is wound to form a cylinder (72). In use the protective sheet 54 is removed and the bearer affixed to a container. Reference has been directed by the Comptroller to Specification 1,492,804.
Patent GB-1091035-A (GB)
Title: Multiple sequence process for the manufacture of oriented thermoplastic and thermosetting film
IPC: B29C55/02
Filed: 1966-02-11
Abstract: 1,091,035. Biaxially oriented films; laminates. NATIONAL DISTILLERS & CHEMICAL CORPORATION. Feb. 11, 1966 [Feb. 24, 1965], No. 6201/66. Headings B5B and B5N. A biaxially oriented plastics film, e.g. of a polyolefine, is made by continuously extruding a flat film, subjecting the film to a first stretching operation in which it is separately stretched in the transverse and machine directions (TD and MD) to from 10-75% of the total required orientations in the TD and MD, and thereafter further stretching the film to the balance of the required orientation in the TD and MD. After the first stretching operation, the further stretching may be effected in stages of alternate TD/MD orientations. The TD and MD stretches may be performed in any order. The extruded film may be quenched (see Fig. 4, not shown) between the separate orientations in the first operation; the film may also be in the form of a laminate. Conventional apparatus may be arranged so as to effect the process (see Fig. 4). Specified plastics are polypropylene and a polypropylene / polyethylene / polypropylene laminate. Such a laminate may be made by extrusion through a die having a double outlet.
Patent GB-808596-A (GB)
Title: High temperature greases stabilized against oxidation
Filed: 1957-02-25
Abstract: A lubricating grease comprises a major proportion of a hydrocarbon oil gelled with a minor proportion of a high-temperature grease thickener, and sufficient of an oxidation inhibitor to be effective above 250 DEG  F. and consisting of a dihydroquinoline of formula <FORM:0808596/III/1> in which R1 and R2 are alkyl radicles containing 1-3 carbon atoms, x and m are integers 0-4 and n is an integer 1-10. The preferred inhibitor is 2,2,4-trimethyl-dihydroquinoline in which the olefinic linkage occurs between the third and fourth carbon atoms and n is 3, present in a proportion of 0.2 to 6 per cent by weight of the grease, preferably 0.5 to 3 per cent.  Other dihydroquinoline derivatives that may be used are lower and higher polymers of the same monomer, the monomer itself, analogues in which the heterocyclic ring is differently substituted by oil-solubilizing groups, and derivatives of the foregoing in which the benzene ring contains one or more substituent groups such as alkyl or alkoxy.  Suitable thickeners are soaps such as sodium or lithium stearate, a synthetic salt-type thickener such as the lithium salt of the condensation product of adipic acid and hexadecylamine, or a non-salt thickener such as N-acetylN1-stearoyl-p-phenylene diamine.
Patent GB-438312-A (GB)
Title: An improved igniter for grenades
IPC: F42C14/02
Filed: 1935-02-27
Abstract: 438,312. Grenade fuzes. SOC. ALSACIENNE D'EXPLOSIFS, Riehwiller, Haut-Rhin, France. Feb. 27, 1935, No. 6295. Convention date, April 10, 1934. [Class 9 (i)] Relates to grenade igniters of the kind in which the mechanical portion (that is the body 1 carrying the striker 3 and its co-operating parts) and the pyrotechnical portion (that is the detonator 15, the time fuze 13, and the percussion cap 10) are separate until the moment of assembly. According to the invention, the pyrotechnical portion is enclosed in a tube 12, the mouth of which is sealed by a cover 8 of waterproof and preferably maleable metal or plastic material. As shown, the cover 8 is tightly pressed in a conical annular space between the pyrotechnical portion and the mouth of the enclosing tube 12. The percussion cap 10 is mounted in a holder 9 over an ignition relay charge 17 in a socket 11, into which the time fuze 13 is inserted. The detonator fits over a liner 14 around the time fuze, and rests against a washer 16 in the bottom of the enclos - ing tube 12. When the pyrotechnical portion is fitted to the mechanical portion, it is secured and further sealed by beading the edge 18 of the body 1. The spring striker 3 has a firing-point 5 and vents 3b and is held cocked by a claw 6<a> projecting from an external lever 6 pivoted at 6b and locked by a safety pin 7. The joint between the claw 6<a> and the body 1 is sealed by a washer 4.
Patent GB-551310-A (GB)
Title: Improvements in the process of treating wool or the like to reduce its tendency to felt
IPC: D06M11/30
Filed: 1941-05-15
Abstract: 551,310. Treating textiles with liquids : dyeing &c. apparatus. TOOTAL BROADHURST LEE CO., Ltd., SPEAKMAN, J. B., and WHEWELL, C. S. May 15, 1941, No. 6297. [Class 15 (i) and 15 (ii)] Material containing wool or other animal fibres is rendered resistant to felting by treating the material with a solution of an antifelting reagent and removing excess of liquid rapidly under conditions such that there is a large exhaustion of the solution before it has time to react with the interior of the individual fibres, so as to effect preferential attack on the outside of the individual fibres and avoid undue damage to the material. The material may be subjected to a plurality of treatments each including rapid removal of excess liquor followed by a short period in which the material is left in contact with adherent liquor. Uniformity of 'the treatment of different fibres may be obtained by squeezing or mangling the impregnated material or by using jets of liquid or suction slots. The reagent may be an acid hypochlorite solution, hypochlorous acid, sodium salt of N-chlorotoluene sulphonamide, an aqueous solution of sodium sulphide, a solution of sulphuryl chloride in white spirit, or a solution of caustic soda or other alkali in butyl alcohol and white spirit. In an example, a wetted out wool fabric is immersed for 5 seconds in an acid hypochlorite solution, mangled three times, and immersed again, the operation being repeated three times. It is then rinsed with thiosulphate, washed, and scoured. The hypochlorite solution may be buffered by means of a salt such as potassium dihydrogen phosphate so as to have a pH value between 6 and 7. For carrying out a plurality of treatments in a continuous manner, the material may be wetted out in an outer trough as shown in Fig. 1, then passed through a pair of rollers 1, and then through the trough 2 where it is treated with a solution of anti-felting reagent, e.g. acidified sodium hypochlorite solution. The material is squeezed by passing it between rollers 3 and then passed through the air to another roller from which it passes again into the outer trough containing washing liquid. The operation is repeated several times. The treatment may be applied to materials containing wool and other fibres, e.g. cotton, rayon, or cotton-covered rubber fibres. Specification 538,396 is referred to.
Patent GB-557803-A (GB)
Title: Improvement in process of reclaiming waste polychloroprenes
IPC: C08J11/14
Filed: 1942-05-09
Abstract: 557,803. Reclaiming waste synthetic rubber. UNITED STATES RUBBER CO. May 9, 1942, No. 6305. Convention date, Sept. 26, 1941. [Class 70]  Scrap containing elastic polychloroprene is reclaimed by heating it in communuted condition with cellulosic fibres either contained in the scrap or added thereto, at a temperature above 300‹ F. and sufficient to degrade the fibres. The cellulosic fibres may be added finely ground, or in sheets, or regenerated &c. In an example, scrap vulcanized Neoprene containing about 20 per cent. of cotton fibre reduced to “ to # mesh, is heated in an autoclave with pine oil, rosin oil, cellulose and water at 300 to 420‹ F. for 3 to 30 hours.
Patent GB-964969-A (GB)
Title: Improvements in ripper earth working equipment
IPC: E02F9/00
Filed: 1961-02-22
Abstract: 964,969. Scarifiers. CATERPILLAR TRACTOR CO. Feb. 22, 1961 [March 23, 1960], No. 6443/61. Heading E1G. A tractor-mounted ripper includes a ripper shank 15 drawn behind a tractor in a substantially upright position and pivotally mounted by means of pins 19, 20 on a clevis 17 secured to the tractor and a push block 21 disposed directly behind the shank and in contact with it and so arranged that an assisting pushing force applied to the block is transmitted in part directly to the lower portion of the shank 15. The block 21 is pivotally mounted on a pin 22 on the clevis 17 and contacts the shank 15 at 23 i.e., below the pin 20. A push plate 24 welded to the block 21 receives e.g. the bulldozer blade of a pushing tractor and carries reinforcing plates 27 and a guide plate 26 for the blade.
Patent GB-1387451-A (GB)
Title: Sanding apparatus
IPC: B60B39/08
Filed: 1972-02-11
Abstract: 1387451 Sanding apparatus BRITISH RAILWAYS BOARD 7 Feb 1973 [11 Feb 1972 9 May 1972] 6576/72 and 21634/72 Heading B7J Sanding apparatus for rail or road vehicles, e.g. a railway locomotive, comprises a sand box 3 which supplies sand to a valve 4 where it is agitated by compressed air from a pipe 5 and passes down a delivery tube 6, further air tapped at 9 from pipe 5 is supplied through pipe 8 to an ejector nozzle 7 where the velocity of the sand is increased and delivery through a pipe 10 on to rail 11 in front of driving wheel 2. In the modification of Fig. 3 air from pipe 5 passes through a fixed choke 18 with a first jet passing through orifice 13 to agitate the sand in valve 4 and a second jet passing through orifice 17 to provide a boosted sand blast in tube 6 before the additional boost in nozzle 7. Orifice 13 may be varied by regulating screw 14.
Patent GB-497194-A (GB)
Title: Process for influencing moire effects in photo-mechanical printing processes
IPC: G03F5/22
Filed: 1937-03-12
Abstract: 497,194. photo-mechanical printing- processes. GROVES, W. W. (I. G. Farbenindustrie Akt.-Ges.) March 12, 1937, No. 6600. Drawings to Specification. [Class 98 (ii)] For influencing moirÚ phenomena in photomechanical printing processes one screen is superimposed by another screen, the lines, points, stars or other elements of which form a square, triangular or hexagonal net of specified form. If the first screen is an ordinary cross-line screen moire phenomena are reduced, particularly if the screens have different constants; and if the first screen is of the same type as the second, moirÚ phenomena are enhanced, particularly if the net is unsymmetrical, such enhanced moire phenomena being used as patterns for bank-notes, textile prints, carpet prints, graphic work, metal etching and art production generally.
Patent GB-291872-A (GB)
Title: Improvements in apparatus for the generation of acetylene gas
IPC: C10H15/02
Filed: 1927-03-10
Abstract: 291,872. Haworth, J. March 10, 1927. Feed-openings for carbide regulated by floats.- A carbide-to-water acetylene generator in which the carbide is supplied by means of a valve U actuated as the bell B rises and falls, is provided with a carbide container A entirelv enclosed except at the mouth, and also with a displacement chamber which reduces the gas space within the generating chamber and consists of walls J, X depending from the carbide container and a closing plate W formed integral with the valve-rack V. The parts of the displacement chamber are secured together and the carbide container is supported by nuts G on the ends of rods E depending from the roof of the bell B and passing through passages in the carbide container. The carbide falls into a trav R secured to the valve rod, and the gas is led away through a regulator valve I, the bell of which carries an adjustable weight F.
Patent GB-1495834-A (GB)
Title: Apparatus for feeding and distributing a steel melt in a mould arrangement for continuous casting of slabs
IPC: B22D35/00
Filed: 1975-02-17
Abstract: 1495834 Continuous casting MANNESMANN AG 17 Feb 1975 [11 March 1974] 6673/75 Heading B3F A vessel 1 for pouring steel melt into a slab mould 3 has at least one pair of closed-bottom tubes 2, each tube being below a bottom outlet 4 or 4a and having a large and a small outlet 5 and 6 on opposite sides of the tube and the two large outlets 5 being directed towards each other. The upper outlets 6 may be horizontal instead of inclined as shown. The vessel outlets may be offset from the tube axes 9 as indicated by outlet 4a. As shown in Fig. 3, the small outlets 6 do not lie in the vertical plane containing the axes of the pair of tubes but are offset toward a wide mould wall. A vortex is said to be produced at the bath surface and a top crust avoided. A layer 8 of material covers the surface. Each pair of tubes 2 may feed a separate mould. In operation, the longitudinal axes of the tubes are inclined at an angle between 4 and 8 degrees to the direction in which the casting is withdrawn. The spacing between the tube axes at the level of the upper edge 10 of the mould may be two-thirds of the mould width.
Patent GB-107030-A (GB)
IPC: B01D19/00
Filed: 1916-05-10
Abstract: 107,030. Walker, W. H. May 10, 1916. Air-traps; ball and float valves.-In an apparatus for separating air from water and steam in boiler feeds and the like, the air accumulates in the chamber 6 which is connected through a condenser a with a valve chamber c. A valve piston e having a central passage h and lateral ports j is operated in the known manner by a float g and counter-weight f. The additional valve is constituted by a " thimble " m with a conical port l adapted to close the upper opening k of the passage h. As the valve piston e descends, the thimble m descends with it until arrested by an abutment n, when the piston e descends alone and opens both valves, the ports j being then open to the atmosphere. Alternatively a sleeve p having a flange s may slide upon the reduced upper portion of the piston e, passages u being provided in the reduced part to serve as the channel h; when the piston descends, the sleeve p descends with it until it is stopped by an abutment when the piston descends alone and creates an annular port t between the lower end of the sleeve p and its seating on the piston e. It is stated that the valves may be modified so as to open on the ascent of the piston e.
Patent GB-212942-A (GB)
IPC: B64D37/04
Filed: 1923-11-05
Abstract: 212,942. Rohrbach, A. Nov. 4, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Tanks.-The tanks for water, petrol and oil on aeroplanes are formed by utilizing the outer skin and bulkheads of the structure and rendering the seams liquid tight. The seams, which may be riveted, bolted, or screwed may be rendered liquid tight by introducing into the joints a liquid which subsequently hardens, such as liquefied vulcanized rubber, cellon, acetone, resin, pitch, &c., as described in Specification 206,515.
Patent GB-1294047-A (GB)
Title: Method and apparatus for the manufacture of endless driving belts
Inventor: YAVORSKY ARSENTY VASILIEVICH
IPC: B29D29/08
Filed: 1971-03-12
Abstract: 1294047 Driving belts UKRAINSKY NAUCHNO-ISSLEDOVATELSKY I KONSTRUKTORSKY INSTITUT PO RAZRABOTKE MASHIN I OBORUDOVANIA DLYA PERERABOTKI PLASTICHESKIKH MASS REZINY I ISKUSSTVENNOI KOZHI 12 March 1971 6746/71 Heading F2Q A toothed driving belt is produced by placing a blank on a toothed mandrel and subjecting it to radial pressure and vulcanization to consolidate the toothed portions. The apparatus shown consists of a mandrel 2 with tapered external teeth and hinged retractable portions 5, 6 enabling the blank to be placed on the mandrel and tensioned by expanding portions 5, 6 by an hydraulic actuator 7. A second mandrel 1 with fully formed teeth 4 is then clamped to mandrel 2 and a second hydraulic actuator 13 operated to lower the mandrels past a fixed ring 12 which forces the belt blank 15 over mandrel 2 on to the former mandrel 1, on which it is subjected to the final pressure and vulcanizing.
Patent GB-788890-A (GB)
Title: Improvements in or relating to magnetic recording or reproducing apparatus
IPC: G11B15/16
Filed: 1956-03-05
Abstract: 788,890. Driving sound film, tape or wire. TELEFUNKEN GES. March 5, 1956 [March 5, 1955], No. 6846/56. Class 40 (2). A tape or wire record apparatus is provided with a feeler 6 which presses against the record medium 4 so that in the event of tension being reduced the feeler 6 is allowed to move to an extent which causes a portion 11 thereof to enter the path of an abutment 12 on a flywheel 3 mounted on the capstan shaft 1 whereby further movement is imparted to the feeler 6 to actuate a switch 16 to stop the movement of the medium.
Patent GB-879058-A (GB)
Title: Method of moulding
IPC: B29C44/02
Filed: 1960-02-26
Abstract: In the preparation of polyurethane foam compositions, a prepolymer is first prepared from polyoxypropylenediol 100, water 0,3, and tolylene diisocyanate 10,5 parts by weight, which mixture is heated at 225 DEG -250 DEG F. for 3 hours after which it is cooled to 180 DEG F. and tolylene diisocyanate 27, water 2, N-methyl morpholine 1, and triethylamine 0,25 parts by weight added. This prepoymer is mixed with modifiers to form a masterbatch comprising prepolymer 100, dimethyl siloxane 0,5, didecyl phthalate 5 parts by weight, and tolylene diisocyanate (to adjust to desired concentration level 9,5%\sB0,2% free NCO).
Patent GB-572673-A (GB)
Title: Improvements in or relating to hydraulic movement-control mechanism
IPC: F41A27/12
Filed: 1942-05-22
Abstract: 572,673. Locking rods. NEWTON, N. B. May 22, 1942, No. 6969. [Class 80 (iii)] [Also in Group XXI] A hydraulic movement-control mechanism, particularly for use in controlling the movement of a tank gun, comprises a piston-rod 35 attachable by an end lug 48 to the gun and slidable in a bulkhead 14 fixed in a cylinder 10 which is held in place by a collar ,33 and mounting trunnions 34, pistons 36, 37 fixed on the rod on each side of the bulkhead, which contains or is surrounded by a short fluid-transfer passage, and quick-action valve means for opening or closing the passage independently of the position of the pistons, the passage and valve means when open being of an area large enough to provide flow of fluid sufficient to permit substantially resistance-free movement of the pistons. Manipulation of a heavy tank gun when the tank is pitching is facilitated by the invention, closure of the passage locking the mechanism to hold the gun in a fixed position and opening of the passage permitting free relative movement of the piston-rod and cylinder. As shown, the transfer passage consists of an annular space provided by a casing 23 fixed to the cylinder and two sets of apertures 11, 12 in the cylinder, flow of fluid from one side of the bulkhead to the other being controlled by a rotatable ring or sleeve valve 20 containing similar co-operating apertures. The valve is engaged by one arm 29 of a crank pivoted on the casing 23, the other crank arm 30 being hand-operable by a cable. Movement of the valve is controlled by a guiding and movementlimiting stud 21 fixed in the cylinder and coacting with.a slot 22 in the valve. Each piston is fitted preferably with spaced, self-sealing glandpackings 38, 39 and a spring-loaded valve 40 controlling the pressure in the space between the glands. An axial passage 46 in the upper end of the piston-rod has a lateral opening below the piston 36 and is fitted with a non- return ball-valve 46a having a very limited freedom of movement. A tubular member 44 forming an extension of the piston-rod acts as a reservoir for replenishing fluid in the cylinder. When the invention is applied to a tank cannon and hydraulic power is available, as for the turret traverse mechanism, hydraulic connections may be provided branching into the cylinder on either side of the bulkhead. By such means the relative operative volumes of fluid on each side of the bulkhead may be varied for power elevation control whilst the gunner may immediately change over to manual operation. According to the Provisional Specification the cylinder may be in two parts and the construction of the bulkhead is different from that described in the Complete Specification.