baber/WOPTO huggingface dataset:
Patent GB-1014561-A (GB)
Title: Improvements in or relating to apparatus for determining the concentration of small quantities of a gas or vapour in a mixture with a neutral gas
Inventor: NASH THOMAS
IPC: A61K31/13
Filed: 1960-11-08
Abstract: 1, 014, 561. Gas analysis; determining relative quantities of fluid mixture constituents; photoelectric measurements. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 8, 1962 [Nov. 8, 1960], No. 38325/60. Heading G1A, G1B and G1N. Apparatus for determining the concentration of a component of a gaseous mixture by selective absorption thereof in a liquid absorbent and measurement of a property of the absorbent related to the concentration therein of the component comprises an absorption cell and jet-forming means adapted, in operation, to direct a jet of the gas mixture on to the surface of the liquid absorbent in the cell. The property measured may be electrical conductivity, as shown in Fig. 1, wherein the cell C contains electrodes E, the vessel V is sealed through siphons S and T, the jet J is fitted with filter F and suction is applied at A. Siphon S may be used to flush out the cell and re-charge it. The cell may be alternatively adapted for measurement of light absorption, in which case part of the cell wall is transparent and a photoconductive cell is used. The apparatus may be used to determine the concentration of sulphur dioxide in air, by measuring (a) the change in conductivity of hydrogen peroxide solution, which may contain a bicarbonate buffer, or (b) the colour change of a fuchsin dye formulation of a dilute solution of iodine in aqueous starch.
Patent GB-836831-A (GB)
Title: Stabilization of polymeric n-vinyl pyrrolidones with sulfurous acid or alkali metal salts thereof
IPC: C08K3/30
Filed: 1956-12-17
Abstract: A process of stabilizing a solid polymeric N-vinyl pyrrolidone against discoloration comprises uniformly dispersing into a solution of the said pyrrolidone in a solvent in which it is soluble, from 0.2 to 1.14% by weight of the said pyrrolidone of a compound selected from sulphur dioxide, sulphurous acid and alkali metal salts of sulphurous acid and the pyrrolidine nuclei may contain methyl or ethyl substituents.  Copolymers with, for example, vinyl chloride, vinyl acetate or propionate, acrylonitrile, methyl or ethyl acrylate, styrene or vinyl ethers, and graft polymers, such as that obtained from acrylonitrile and polymeric N-vinyl-2-pyrrolidone can also be stabilized. Specification 715,194 is referred to.
Patent GB-1205917-A (GB)
Title: The manufacture of selenium rectifiers
IPC: C23C4/123
Filed: 1969-07-31
Abstract: 1,205,917. Spray producers. SIEMENS A.G. 31 July, 1969 [31 July, 1968], No. 38558/69. Heading B2F. [Also in Division C7] Metal is sprayed from a heated container 10 onto a selenium rectifier plate through a nozzle 14, surrounded by an outlet 17 to which heated compressed air is supplied from a duct 18. The nozzle outlet may be adjusted by a valve 13a, and the nozzle is oscillated.
Patent GB-1132356-A (GB)
Title: Nuclear reactor fuel elements
Inventor: REDFORD DEREK STANLEY
IPC: G21C3/10
Filed: 1965-09-09
Abstract: 1,132,356. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 23 Aug., 1966 [9 Sept., 1965], No. 38618/65. Heading G6C. The protective sheath, 1, of a pin-type nuclear reactor fuel element is urged into engagement with the plug 2 by high energy shock waves generated by an electromagnetic device described in Specification 991,424, with reference to Figs. 2 and 3 therein. The sheath is crimped into the groove 4 and on to the conical and cylindrical surfaces 5 and 7. The neck 8 is sealed by the spot-weld 9.
Patent GB-369933-A (GB)
Title: Improvements in and relating to electric time-switch mechanism
IPC: G04F3/02
Filed: 1930-12-23
Abstract: 369,933. Time switches. FABRIK ELEKTR. APPARATE F. SAUTER AKT.- GES., Basle, Switzerland. Dec. 23, 1930, No. 38650, Convention date, Dec. 23, 1929. [Class 38 (v).] Switches, quick-break; actuating; springs, arrangement of.-A clockwork-actuated switch comprises a contact-arm 32 pivoted at 33 and adapted to be moved on and off by pins 24<1>, 24<11> on a 24-hour disc 14, engaging a member 23 on a shaft 22<111>. Pins 28<1>, 28<11> are secured in a horizontal position on, respectively, a rocker 221, loose on the shaft 22<111>, and a sector 22 fixed on the shaft 22<111>, and engage an arm 30 pivoted at 29 to move the arm 32, a spring 22<11> giving a dead-centre snap action in both directions. The parts 22, 22<1> are normally coupled together by a gravity-controlled lever 21, which is pivoted to the sector 22 at 27 and carries stops 25, 26 for effecting the coupling action. The lever 21 co-operates with the end of a lever 20, 20<1> pivoted at 19, the end 20<1> normally bearing against a shaft 16, Fig. 2, which is biased to the left to hold a cam member 15 against a toothed wheel 8 forming part of a control element for permanently disconnecting the switch 32 when the clockwork runs down. Running down causes the wheel 8 to be rotated from the shaft 12 of the disc 14 through gearing 13, 10, 9, and the wheel 8 is internally threaded to move to the right along a correspondingly-threaded sleeve 6, which is normally stationary on a pin 5. This movement to the right causes the shaft 16 to move also to the right, whereby the conical end of a cylinder 17 moves the arm 20<1> from engagement with the shaft 16 into engagement with the surface of the cylinder 17, so rotating arm 20 and lever 21 and disconnecting the parts 22, 22<1>. The switch 32 is thus prevented from closing, Fig. 6, but the parts can be restored by a consumer rewinding the clock by means of the winding arbor 1. This action drives the gear wheels 2, 7 and rotates the sleeve 6 which rotation causes the wheel 8 to move back to the left and with it the shaft 16. The parts are thus all restored and the switch can again be operated by the clockwork. If, however, the consumer omits to rewind the clockwork, the wheel 8 continues to move to the right until a cam 15 moves past a pin 39 on a pawl 37, which is rotated by its spring 40 into a position where it engages the wheel 2 and blocks the mechanism against rewinding. The mechanism can then only be put right by an authorized person. The Specification as open to inspection under Sect. 91 (3) (a) states also that the segment 15 or cylinder 17 could control a member arranged permanently to maintain the lever 21 in its uncoupling position in spite of the clockwork having been rewound. This subject-matter does not appear in the Specification as accepted.
Patent GB-1200191-A (GB)
Title: Damped and tuned dynamic vibration absorber for vehicles
IPC: B60K5/12
Filed: 1967-08-22
Abstract: 1,200,191. Mounting engines; articulated vehicles. CATERPILLAR TRACTOR CO. 22 Aug., 1967 [20 Dec., 1966], No. 38650/67. Heading B7H. The engine 14 of an articulated scraper vehicle is mounted on the tractor frame so as to be displaceable in a vertical plane, and hydraulic dampers 27 and torsion bar springs 30, 31 are connected between the engine and frame. The dampers 27 and springs 30, 31 form damping and tuning means so that the engine acts as a damping mass to oppose resonant bouncing of the vehicle. The engine 14 and associated transmission gearing are mounted on a sub-frame 21 connected by pivot pins 25 to a main frame comprising a final drive housing 16 and longitudinal frame members 17. The dampers 27 are connected between the subframe 21 and the members 17, and links 36, 37 connected by pins 39 to the sub-frame act on levers 34, 35 each connected to an end of one of the torsion bar springs 30, 31 which have their opposite ends anchored in the housing 16. The final drive gearing is coupled to the transmission output through a universal joint aligned with the axis of the pivot pins 25.
Patent GB-364328-A (GB)
Title: A flash point testing machine
IPC: G01N25/52
Filed: 1930-12-24
Abstract: <PICT:0364328/III/1> In a flash-point testing device the oil-cup 2 is double-walled, and the inner wall 3 is conical and is fitted close to the flush nozzle 8 bearing on enlarged space between the walls remote from the nozzle 8 for the passage of any hot air.  10,0 cc. of oil is sufficient for a test.
Patent GB-925440-A (GB)
Title: Improvement in controls for electro-magnetic couplings
IPC: H02P29/00
Filed: 1961-11-01
Abstract: 925,440. Automatic speed control. HEENAN & FROUDE Ltd. Nov. 1, 1961 [May 1, 1961], No. 39030/61. Class 38 (4). [Also in Group XXIV] The speed of the output shaft 10 of an eddy current coupling CL is maintained constant by control of the excitation of a field coil 2 which is connected to a solid state controlled rectifier CR. The gate and cathode of the rectifier are connected to a phase-shift circuit PS which includes a transistor TR3 operating as a variable resistor, this transistor being controlled in accordance with speed error signals. The preselected speed is obtained by adjustment of potentiometer P3, a feed-back voltage being developed by tachometer generator G. The rectifier CR provides full-wave rectification since it is provided with two gate circuits having a common path which are alternately controlled each half-cycle by intercoupled transistors TR1, TR2. The phase of the gate signal is displaced with respect to the applied voltage across the controlled rectifier in accordance with the equivalent resistance of the transistor TR3. Specification 925,439 is referred to.
Patent GB-969646-A (GB)
Title: Improvements in and relating to sheet separating apparatus
IPC: B65H3/04
Filed: 1961-11-01
Abstract: 969,646. Feeding sheets. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 1, 1961 [Nov. 3, 1960], No. 39055/61. Heading B6B.  Sheets 13 are separated from the top of a pile by a friction roller 14 and guided by plates 77, 78 between a friction member 22 and an opposed travelling friction belt 11, the member 22 moving in a direction to forward a separated sheet along guides 80 to a pair of forwarding rollers 82, 83, and the belt 11 moving at a slower speed in the opposite direction to prevent more than one sheet being forwarded, and mechanism is provided for automatically maintaining a constant tension in the restraining belt 11 and to allow only a limited movement of that belt away from the member 22. The coefficient of friction between the belt 11 and the sheets 13 is not as great as that between the member 22 and the sheets, but is greater than that between two sheets. The member 22 is of rubber and is mounted on a driven disc 21, and has transverse recesses 23 on its outer surface. The belt 11 has longitudinally extending serrations on its outer surface, and runs around a driven roll 26 and idler rolls 27, 28, 29, 30. The roller 28 is mounted on a pin 56 urged by a spring 57 to engage the face of a cam 53, the pin being carried on a pivoted arm 58. The cam 53 is secured to a rotatably mounted shaft 41 which is constrained to rotate clockwise by a weight 50 on an arm 51 secured to the shaft; thus, the belt 11 is tensioned, and cannot be wedged away from the member 22 more than the amount sufficient to pass one sheet only. The shaft 41 can be rotated counterclockwise to release the tension in the belt 11, by means of a lever 68 which is rotatably mounted on the shaft and has a finger 66 thereon which can engage either of two stops on the cam 53. Specification 969,647 is referred to.
Patent GB-1390586-A (GB)
Title: Closures for firebreaks in ventilation and air-conditioning installations
IPC: A62C2/24
Filed: 1973-08-21
Abstract: 1390586 Minimising fires in ventilation systems TROX GmbH Gebr 21 Aug 1973 [26 Aug 1972] 39374/73 Heading A5A A closure for a firebreak in a ventilation or air-conditioning installation, comprises an insert in the form of a spirally wound strip 4 located within an annular recess 2 of an air duct 1. The insert, which may be formed of hydrated potassium or sodium silicate, foams up at elevated temperatures to block off the flow through the duct. An aluminium spiral jacket is provided to protect the strip from humidity.
Patent GB-910791-A (GB)
Title: Liquid dispenser
IPC: F04B53/12
Filed: 1959-11-20
Abstract: 910,791. Reciprocating pumps. DRACKETT CO. Nov. 20. 1959 [Dec. 1, 1958], No. 39461/59. Class 102(1). A pump for mounting on a container comprises a cap 21 to which a moulded cylinder unit 12 having a collar 14 is attached by deforming the collar 14 to form the lip 30. A moulded piston/head portion is inserted in the cylinder bore and subsequently lips 66 are formed to prevent withdrawal. The head 37 screws into the collar 14 and seals therewith to prevent leakage in the immobilised position of the piston, in which position a small convolution 60 on the spring 52 engages the inlet valve 55 and holds it on its seat.
Patent GB-964848-A (GB)
Title: Improvements in yarn severing mechanism for knitting machines
IPC: D04B15/61
Filed: 1962-10-18
Abstract: 964, 848. Knitting machines. TEXTILE MACHINE WORKS. Oct. 18, 1962 [oct.18, 1961], No. 39472/62. Heading D1C. A circular knitting machine having a rotarily operated circle of needles and a plurality of knitting stations each station comprising a series of yarn feeding fingers 15 in combination with yarn severing means 37, 39 for cutting the yarns when the fingers. are in their active-position and means 57, 60, 65 at each station for guiding the yarns moved into inactive position thereat to the severing means associated with another of said stations for severance. The severing means comprises an annulus 35 with teeth 37 which moves in a counterclockwise direction carrying the thread to be severed by a cutting edge 39 on the knife blade 40. The yarn after severing when the yarn fingers are placed in an inactive position is clamped by means of an upcurrent of air through a suction tube 42, when the yarn is again fed back it is cut close to the first needle to take it and the waste yarn is drawn into the tube and collected by a trap 50 (not shown). A tube 42 is provided at each knitting station and all are joined to a common manifold 45 which is exhausted by means of a vacuum pump 47 (not shown). Specifications 790,142 and 842,501 are referred to.
Patent GB-1106585-A (GB)
Title: Roof ventilators
IPC: F24F7/02
Filed: 1966-09-08
Abstract: 1,106,585. Roof ventilators. WESTERN ENGINEERING & MANUFACTURING CO. 8 Sept., 1966 [24 Jan., 1966], No. 40118/66. Heading F4V. A ventilator having a manually operated pivoted flap 58 comprises vertical separator sheets 12, upper and lower sheet members 14, 18, horizontal members 16 between the separators 12 and transverse baffles 20. The ventilator may be of thin gauge metal which has been painted or protected against corrosion. Grooves 40, 50, 56 act as rain gutters and the separators 12 are longer than members 14, 16, 18, so that rain is directed from the gutters to the outside of the ventilator. A band 24 surrounds the out. side of the ventilator. The flaps 58 pivoted on rods 76 and held closed by a spring 108 are opened by pulling a cord 104 connected to a linkage 98, 94, 96 connected to a bracket 102 on each flap. A screen to exclude insects and debris can be slid into grooves 44 on the edges of the members 14.
Patent GB-1313516-A (GB)
Title: Slide magazine
IPC: F16B1/00
Filed: 1970-08-20
Abstract: 1313516 Magazine slide projectors BELL & HOWELL CO 20 Aug 1970 [23 Sept 1969] 40122/70 Heading G2A A stack-loading slide magazine has flanges 18 extending outwardly from the lower edges of side walls 36b, 36d to enter grooves 42 in the inner  faces of two opposing edges of a sliding cover 12. Complete sliding removal of cover 12 is prevented by a post extending from walls 36b and 36d to engage a constriction in grooves 42. A gap in flanges 18 permits rotation of cover 12 for removal. The loaded magazine is inserted in recess 26 of a projector 28, the cover being held by the entry of keys 20 into recesses 16 as the magazine is slid laterally into grooves 38 to permit slides to fall into receiving station 50.
Patent GB-1207267-A (GB)
Title: Laminates formed from vinyl chloride polymer compositions
Inventor: THOROGOOD KENNETH PHILIP
IPC: B32B27/00
Filed: 1968-08-22
Abstract: 1,207,267. Vinyl chloride resin laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 31 July, 1969 [22 Aug., 1968], No. 40233/68. Addition to 1,186,747. Heading B5N. [Also in Divisions B2 and C3] A laminate of vinyl chloride resin layers comprises a layer (A) and an outer layer (B) between which is a layer (C); (A) contains 5-40 wt. per cent polymeric impact modifier and less than 5 wt. per cent plasticizer, (B) contains less than 5 wt. per cent plasticizer and (C) contains 10- 120 wt. per cent plasticizer, the figures being based on weight of vinyl chloride polymer in the composition. Each layer may comprise a plurality of foils or sheets. Layers (B) and (C) may be 0À001-0À020 inch thick and layer (A) may be 0À05-0À5 inch thick. A specified combination of layers is BCACB. (A) and (B) may contain no plasticizer, (B) and (C) may also contain polymeric impact modifiers, and (B) may contain 0À1-4 wt. per cent U.V.-absorber (based on weight of vinyl chloride resin). Examples of these additives are given, and other types of additive are mentioned. The vinyl chloride resin may be a homopolymer or copolymer (examples of co-monomers being given) of up to 20 wt. per cent comonomer, and may be post-chlorinated. The constituent laminµ may be assembled by hot pressing, by extrusion laminating by adhesive or by spraying the layers on to a base. The laminate may be post-formed or bonded to glass or polymethyl methacrylate.
Patent GB-1240204-A (GB)
Title: Improvements relating to supports for pottery and the like articles during firing and like heat treatment
Inventor: GAUTBY HUBERT RADULF BERENGER
IPC: F27D5/00
Filed: 1969-08-12
Abstract: 1,240,204. Supporting pottery during firing. ACME MARLS Ltd. 20 May, 1970 [12 Aug., 1969], No. 40251/69. Heading F4B. Supports for pottery &c. during firing comprise side members 10 and parallel strip 12 united by rods 11 passing- through holes 10a and spaced apart by sleeves 13, all the parts being made of ceramic refractory material. Upper edges 10b, 12b carry the ware and lower edges 10c, 12c engage the kiln hearth or other supporting surface. In a modification (Fig. 2) the side members (110) are associated with a parallel central member (114) of less depth and other parallel members (112) of considerably less depth, additional flat connecting plates (115) joining side and. central members below said other parallel members (112). The rods 11 may be formed with slotsnear their ends engaged by locking strips passing through vertical slots in the side members (Fig. 3). Another modification (Fig. 4) has all bar-like members, transverse members (311) being notched into side members (310) and into longitudinal members (312). The members may be made of zircon, sintered alumina, silicon carbide, silicon nitride, or alumino-silicate.
Patent GB-1000608-A (GB)
Title: Improvements in and relating to television apparatus
IPC: H03D7/08
Filed: 1962-10-25
Abstract: 1,000,608. Radio receivers. BLAUPUNKTWERKE G.m.b.H. Oct. 25, 1962 [Nov. 9, 1961], No. 40417/62. Heading H3Q. In a television tuner switchable to receive either within the VHF or UHF bands, and wherein the same general circuit configuration is used for reception over both bands, the switching being effected by switching of fixed induction and associated trimming capacitors, but the same capacitors being used for tuning and the same valves or transistors being used for amplification and frequency changing over both bands, the inductance elements for VHF tuning each comprise a half-wavelength conductor, the central portion of which is displaceable and is mounted together with the corresponding VHF inductor on the rotor of a switch so that either the central portion of the conductor or the VHF inductor may be selectively brought into circuit. Fig. 1 (not shown) illustrates a tuner comprising a radiofrequency amplifier valve preceded by a switchable tuned input circuit and followed by two switchable tuned band-pass circuit providing the input to a mixer-oscillator valve whose anode circuit includes a further switchable tuned circuit tuned to the local-oscillator frequency. The four tuned circuits are mounted within separate compartments in a screened container, coupling between compartments being effected by suitable slots in the compartment walls. Fig. 2 shows a section through one compartment. Conductor 53 mounted on a switch rota forms together with fixed conductors 50, 51, a half-wavelength section serving as the VHF tuning inductor. Section 53 may be replaced by inductors 57 or 58 for tuning over separate parts of the VHF band. The radio-frequency valve amplifier stage may be preceded by or replaced by a tunnel-diode amplifier stage.
Patent GB-912325-A (GB)
Title: Differential liquid level switch
IPC: H01H35/30
Filed: 1959-11-28
Abstract: 912,325. Fluid actuation of switches. WHITEHEAD & POOLE Ltd., and POOLE, S. B. Nov. 2, 1960 [Nov. 28, 1959], No. 40508/59. Class 38 (5). [Also in Groups I, XVIII and XXXV] A switch 25 is operated at a predetermined difference in level of liquid on the two sides of a filter 11. Two containers 12 and 14 each having a flexible wall 16 contain oil and are connected by a pipe 17. A bellows 20 inside container 12 is connected by a pipe 22 to a bellows 23 and contains oil 27 such that when the liquid levels are substantially the same on each side of filter 11 the plate 21 on diaphragm 16 is just clear of the end of bellows 20, and the end of bellows 23 is just clear of the operating button 26 of switch 25. When the liquid level difference exceeds a predetermined value the volume of container 12 decreases and the bellows 20 is compressed to cause expansion of bellows 23 and operation of the switch 25. Switch 25 initiates cleaning of the filter 11 and restores when the liquid levels are again substantially the same.
Patent GB-1119704-A (GB)
Title: Improved polyamide compositions
Inventor: GRICE KENNETH DARLING
IPC: C08K5/521
Filed: 1964-10-06
Abstract: Polyamides are stabilized by the incorporation therein of a manganous salt of an acid phosphoric alkyl, halo-alkyl,cycloalkyl, aryl or aralkyl ester.  The stabilizer may be prepared by reacting a manganous salt with the product of reaction of P2O5 with a primary alcohol, which may first be neutralized with an alkali metal base. The stabilizer may be added as such, or be formed in situ from the acid ester and the manganous salt.  There should preferably be an excess of the acid phosphoric ester or its alkali metal salt, added with the mixture or with the pre-formed stabilizer.  In examples, a polycaprolactam (nylon 6) is stabilized by addition of manganous butyl phosphate, manganous 2-ethylhexyl phosphate or MnCl2 with chlorethylphosporic acid or sodium chlorethylphosphate.ALSO:Manganous alkyl phosphates, for use in stabilizing polyamides, are prepared by reaction of a manganous salt with the corresponding alkali metal alkyl phosphate, which may be prepared by reaction of an alkanol with P2O5 followed by neutralization with NaOH.  In Examples A and B manganous butyl phosphate and sodium and manganous 2-ethyl-hexyl phosphates are prepared in this way.  In Example C, O = P(OC2H4Cl)1.33(OH)1.67, prepared from tris(chlorethyl) phosphate and POCl3, is neutralized with NaOH to form the sodium salt.