baber/WOPTO huggingface dataset:
Patent GB-393471-A (GB)
Title: Improvements in and relating to light-sensitive devices
IPC: H01J40/04
Filed: 1932-10-21
Abstract: 393,471. Photo-electric cells. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Thomson, H. E. ; 1520, Nott Street, Schenectady, New York, U.S.A.) Oct. 21, 1932, .No. 29513. Convention date, Oct. 23, 1931. [Class 39 (i).] A gas-filled cell has a cathode in the form of a plate 4, an anode consisting of a flat helix 7 surrounding the cathode, and two plane grid electrodes 9 arranged one on each side of the anode and connected with the cathode directly or through a source of potential 14 lower than that of the anode so as to act as collectors of ions and prevent bombardment of the cathode. The filling may be argon at a pressure of 20 to 300 microns. The cathode may be coated with silver by electroplating, chemical deposition, or electric sputtering, and the coating oxidized by passing a glow discharge between the cathode and anode in an oxidizing atmosphere ; caesium is distilled from a pellet in a capsule 8, and excess caesium is removed.
Patent GB-619779-A (GB)
Title: Improvements in iron powder and cores produced therefrom
IPC: H01F1/20
Filed: 1946-10-03
Abstract: Powdered iron of high permeability and low eddy current loss is manufactured by thermal decomposition of iron carbonyl producing spherical particles less than 12 microns in diameter, the powdered iron being reduced with a reducing gas at a temperature not exceeding 430 DEG C. and for a time which prevents sintering until the carbon content is reduced to a maximum of .029 per cent.  The powder may be heated in hydrogen for 7-12 hours at 380-430 DEG C. and then lightly milled in a ball mill to break up any agglomeration of particles. The powder so obtained having an initial permeability of 40-72 may be mixed with a 2.5 per cent solution of a butareol soluble urea formaldehyde condensation product in n-butyl alcohol, the alcohol evaporated and the powder heated to set the resin.  The grains obtained may then be moulded into cores having a permeability exceeding 50 and an eddy current loss coefficient of 0.6-7.0 x 10-7 ohms per henry and cycles per second squared.  Specifications 269,677, 286,167, 306,215, [all in Class 72], and U.S.A. Specifications 1,783,560 and 1,783,561 are referred to.
Patent GB-520092-A (GB)
Title: Regulating and controlling device for installations comprising an air compressor and a reservoir, in particular for brakes of vehicles
IPC: F04B49/24
Filed: 1938-10-12
Abstract: 520,092. Regulating compressors; valves. FABBRICA ITALIANA MAGNETI MARELLI. Oct. 12, 1938, No. 29565. Convention date, Oct. 13, 1937. [Class 8(i)] [Also in Group XXIX] Air flows from the delivery conduit 51 of a compressor axially through a filter 42 to a chamber 8 and by lifting the valve 16 enters a chamber 14 communicating with a reservoir and, e.g., with the brakes of a vehicle. With the valve 38 as shown, the air also passes to the top of a piston 3 and depresses this piston against a spring; when the pressure is sufficient, a lever 12<SP>11</SP> acted on by the piston rod exerts enough force on an extension 31, 31<SP>1</SP> of a valve pin 32 to shift this pin against the lateral pressure of a stop 34 which is acted on by an adjustable spring 36. The pin 32 then suddenly opens a valve 10, allowing air to pass from the chamber 8 around the pin and the part 31<SP>1</SP> to atmosphere. As the pressure falls, the springs 4, 37 return the piston 3 and pin 32 to their previous positions, the stop 34 being inoperative till these positions are reached. By turning the valve 38, communication with the space above the piston is cut off and thereby the regulation ; the valve then delivers the air under higher pressure through an outlet, e.g. for valve inflation. The chamber 14 is provided with a relief valve 20. The piston 3 carries an electric contact which closes a signalling circuit at low pressures.
Patent GB-1441126-A (GB)
Title: Method of producing articles with magnetic and non-magnetic  portions from metal blanks
IPC: B23P17/04
Filed: 1973-06-21
Abstract: 1441126 Alloys &c TSENTRAL ORDENA TRUDOV KRAS ZNAMENI NI INST CHERN METAL IM IP BARDINA 21 June 1973 29574/73 Heading C7A [Also in Division B3] Articles e.g. for measuring instruments, computers and cybernetic use, having both ferromagnetic and non-magnetic portions are made by subjecting only part of a metal blank having an unstable austenitic structure to plastics deformation at 0-800‹C so as to render that part magnetic. The deformation may range from 0À1 to 99À9%. Magnetic properties may be enhanced by heating the plastically deformed parts to 450-850‹C for 0À5-200 hours. The part to be reduced by plastics deformation may initially be of larger cross-section than the part which is to remain non-magnetic, the deformation reducing the larger cross-section to that of the non-magnetic part. Sheet, bar or tab may be worked by rolling or drawing. Non- magnetic portions may be produced by local heattreatment of magnetic portions. The blank may be given an unstable austenitic structure by hot deformation in the range 1180- 800‹C. This may be followed by heating at 1150 or 1100‹C to equalize the temperature. After deformation at 0-800‹C the deformed portion may be held at 650‹C for one hour and cooled. The metal may have the following compositions, percentages being by weight and the balance Fe.
Patent GB-677963-A (GB)
Title: Improvements in or relating to devices comprising an automatically frequency-corrected oscillator
IPC: H03L7/08
Filed: 1950-12-04
Abstract: 677,963. Automatic frequency control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 4, 1950 [Dec. 7, 1949], No. 29616/50. Addition to 677,730. Class 38 (iv). Relates to automatic frequency control circuits, of the kind described in the parent Specification, in which a frequency-correcting voltage to be applied to an oscillatory source 1 is taken from a tuned discriminator-rectifier 3 to which a control oscillation source 2 is coupled; and consists in linking the tuning control of the source 2 with the tapping point 16 from which the frequency correcting voltage is taken. As shown, the controlled valve oscillator 1 feeds two circuits 7, 8 which are tuned above and below the desired frequency and are respectively connected across rectifiers 9, 10 and load resistors 11, 12. These resistors are connected in series and are shunted by a tapped resistor 15. The circuit 7 is also fed from the tunable controlling source 2 so that a beat frequency is produced across the resistor 11 when there is a frequency difference between the sources 1, 2, and a D.C. voltage proportional to phase difference when the frequencies are the same. The correcting voltage is taken between the junction of the resistors 11, 12 and the earthed tap 16 on the resistor 15, and is applied through a smoothing network 4 to a reactance valve 5 associated with the controlled source 1. A heterodyne frequency change may be made between the source 1 and the input coil 6 to the discriminator. The off-tune circuits of the discriminator may be replaced by coupled circuits tuned to the desired frequency. The system combines the accurate control of the beat-frequency discriminator with the wide " catching " range of the tuned discriminator network.
Patent GB-469518-A (GB)
Title: Improvements in the manufacture of metal alkyl compounds
IPC: C07F7/24
Filed: 1935-10-26
Abstract: <PICT:0469518/IV/1> In the preparation of lead and tin alkyls by interaction of an alloy of the metal with an alkyl halide at elevated temperature and pressure, the reaction mass is maintained at the desired temperature by condensing the vapours of alkyl halide evolved during the process and returning them from the reservoir in which they are collected to the reaction vessel at a controlled rate. The alkyl halide vapours may be condensed under controlled conditions, e.g. by varying the flow of cooling medium through the condenser by means of a pressure-operated valve responsive to the pressure in the system.  The condenser tubes are preferably fitted with volume restrictors in order that the vapours may pass through at a velocity above that producing turbulence and thereby prevent any building-up of pressure by the non-condensible gases formed. The process may then be operated using an excess of only 50--100 per cent of alkyl halide. For the production of lead tetra-alkyl in the apparatus described in Fig. 1, lead mono-sodium alloy and some ethyl chloride vapour are placed in the autoclave 1, which is connected in a closed system with a condenser 2 and a reservoir 3. The reaction, which is exothermic, starts spontaneously and as the temperature rises, fresh ethyl chloride is allowed to flow by gravity from the reservoir into the autoclave, the rate of feed being indicated on the dial 17a.  Ethyl chloride which vaporizes is condensed and returned via the condenser to the autoclave at a rate adjusted by the valve 6a to maintain the temperature at 60--70 DEG  C.  Automatic control of the pressure in the system is attained by the use of a pressure-type diaphragm-operated valve 12 which determines the amount of cooling medium, preferably kerosene, entering the condenser and leaving by pipe 13.  Each condenser tube 9, Fig. 2, is provided with a tube 10, hanging therein from a cross-pin 11, which acts as a volume restrictor. To assist in the regulation of the temperature the autoclave is provided with a jacket 14 through which a cooling medium such as water can flow; when the pressure drops in the system, hot water is passed through the jacket to ensure completion of the reaction.
Patent GB-537862-A (GB)
Title: An improvement for greasing, effected through a pistol-type grease gun
IPC: F16N3/12
Filed: 1939-11-09
Abstract: 537,862. Grease guns. NEUMAN, C. J. Nov. 9, 1939, No. 29748. [Classes 102 (i) and 102 (ii)] In a grease gun comprising a main plunger which is traversed along a tubular guide rod 20 rotatably mounted within a storing cylinder 1 by relative rotation of the guide rod and the storing cylinder, and an axially movable secondary plunger 15 passing through the guide rod and having one end operating in a secondary cylinder 14 in communication with the storing cylinder, relative rotation of the guide rod and the storing cylinder is effected by means of a pistol-type handle 18 fixed to the guide rod adjacent one end 3 of the storing cylinder, the handle being provided with an operating lever 43 of trigger form for actuating the secondary plunger. The main plunger comprises a nut 21 screwed on to the guide rod and carrying a flanged leather cup washer 24 which is held up against a disc 23 by means of cup and disc members 26, 27, the nut being flanged at 22 and riveted over at 28. Rotation of the main plunger is prevented by means of a groove 130 in the disc 23 engaging a longitudinal rib 29 on the storing cylinder 1. The rear part 37 of the secondary plunger 15 carries a steel ball 39 which engages in a cam groove 40 in the arm 41 of the operating lever 43, its return movement being effected by means of a spring 33. The handle 18 may be made of sheet metal.
Patent GB-730672-A (GB)
Title: Improvements in delay circuits for electronic digital computing apparatus
Inventor: OWEN CHARLES EDWARD
IPC: H03H11/26
Filed: 1952-11-25
Abstract: 730,672. Pulse delaying circuits. ELLIOTT BROS. (LONDON), Ltd. Nov. 25, 1953 [Nov. 25, 1952], No. 29845/52. Class 40 (6). A pulse delay circuit comprises two discharge tubes to the grid of the first of which the pulse signal to be delayed is applied and the second of which is connected as a cathode - follower, the intertube coupling circuit comprising an inductor, capacitor and semi-conductor device connected in a. closed loop so that the capacitor is charged by the input pulses and is periodically discharged by reset pulses applied to the second tube. Fig. 1 shows two delay circuits connected in tandem. Positive going input pulses, Fig. 2 (c), are applied at either terminal 1 or 3 and gate positive going clock pulses, Fig. 2 (a) applied to crystal diode XI so that selected clock pulses, Fig. 2 (d) are applied to the control grid of tube VI. The inductive load L1 " rings " when a pulse is applied, so that a waveform as shown at Fig. 2 (e) is produced across L1. Capacitor C2 is charged during the positive portions of this waveform and is discharged by the negative pulses of a resetting voltage, Fig. 2 (b) which is applied via crystal diodes. X4, X5 so that a voltage as shown in Fig. 2 (f) is produced at the grid of cathode-follower stage V2. An output pulse, Fig. 2 (g) appears at the cathode of tube V2 the individual pulses of which are delayed with respect to those of the input waveform of Fig. 2 (c) by one digit period.
Patent GB-696773-A (GB)
Title: Improvements in or relating to means for preventing relative rotation between a shaft and a co-operating member
IPC: F16C29/02
Filed: 1950-12-06
Abstract: 696,773. Machine tool details. URWICK, W. D. Dec. 3, 1951 (Dec. 6, 1950], No. 29873/50. Class 83 (iii). [Also in Group XXIV] Means for preventing relative rotation between a shaft 12 and a member 11 slidable thereon comprises a wedge-shaped key 10 engaging two keyways in said shaft and member, the keyway in the shaft having one keybearing surface 13 in a radial plane of the shaft and the keyway in said member having a keybearing surface 14 aligned with said radial plane, and means such as a screw 15 for loading the key in a direction inclined to the said plane to retain it in rigid engagement with both of said surfaces. The slight freedom of movement of the key may be adjusted by screws 16, and a pad of brass &c. may be inserted between the key and screw 15. In a modification (not shown), the key 10 extends along the entire length of the keyway in the shaft and the member 11 is slidable thereon. The invention is shown applied to a combined lathe and milling machine having a bed 11a vertically movable on a pillar 12. To use the machine for milling, the clamping screws 15a are released and the bed 11a lowered by a hand wheel 22 and screw 23. The work is mounted on the slide 21 or the slide is removed and the work clamped on a cross slide 27. The cutter is mounted on the mandrel 24.
Patent GB-837443-A (GB)
Title: Improvements in or relating to rotary selector valves
Inventor: LONG EVERETT
IPC: F16K11/076
Filed: 1956-10-03
Abstract: 837,443. Rotary selector valves. PLESSEY CO. Ltd., and UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Sept. 30, 1957 [Oct. 3, 1956], No. 30133/56. Class 135. A rotary selector valve for gas sampling purposes comprises a cylindrical body 10 formed with two rows of staggered ports 14 and a rotary connector arm 15 carried by a vertical drive shaft 16 and provided with a pair of axially spaced ports 19 which communicate alternately with the ports 14 as the arm 15 is intermittently rotated, thus putting a port 14 in connection with an outlet 26 though passages 15a, 15b. One of the body ports 14e is arranged to provide a connection 14d between one of the ports 19 and the interior of the valve body 10, all the other body ports being in communication with gas inlet pipes. The ports 19 are formed by carbon rings pressed into sealing contact with the interior surface of the valve body 10 by springs 24 encircling bellows 21. The lower end of drive shaft 16 is sealed by a carbon bush 28 and integral rings 31, and the upper end by gland rings 35, 39 and integral rings 34, the space between rings 34, 39 being fed with gas at a pressure of about 5 lb/sq. inch from an inlet 40 to reduce leakage from the valve body. Arm 15, shaft 16 and their associated driving mechanism may be removed with a cover 11 to allow inspection and maintenance without breaking any of the pipe connections to the body 10. The drive mechanism for the intermittent rotation of arm 15 comprises an electric motor 53, Fig. 2, driving worm gearing 44, 56 on shaft 70 through chain and sprocket gearing 57, 58, 59, the latter sprocket being of the one-way driving type, and the end of shaft 70 carrying a two-lobed cam-like member 64, Fig. 3, subjected to opposed centring rollers and springs 63, 65. Rotation of arm 15 is effected by motor 53 until shaft 70 carries the crests of lobes 64 just beyond rollers 63, when springs 65 rapidly flick shaft 70 forwardly, disconnecting motor 53 through a microswitch 61, and centring member 64 so that arm 15 is correctly registered with the next wall port 14.
Patent GB-950806-A (GB)
Title: Watch with a dial rigidly connected to the casing
IPC: G04B37/05
Filed: 1962-08-07
Abstract: 950,806. Watches. G. MONTESE-CARUSO and E. BUSSI. Aug. 7, 1962 [Aug. 9, 1961; June 22, 1962], No. 30208/62. Heading G3T. In a watch the dial is integral with or fixed to the case-band or integral with or fixed to a part attached to the case-band. In the first example, Fig. 2, the dial 7 is integral with the case-band 2. The glass 14 is fixed in a groove 16 of the bezel 12 which is located in an annular groove 10 in the case-band. The dial may be connected by peripheral screws to the case-band. In another example, Fig. 4, the dial is integral with a ring 40 which is screwed to the case-band. The dial may be a snap fit on the ring and the glass may be held in position by a strengthening ring. If the case bottom is also screwed to the case-band a packing may be located between a flange of the bottom and the case-band. The ring 40 may be a snap fit within the case-band. Specification 950, 805 is referred to.
Patent GB-1437175-A (GB)
Title: Record presses
IPC: B30B15/06
Filed: 1972-06-28
Abstract: 1437175 Moulding gramophone records EMI ELECTROLA GmbH 22 June 1973 [28 June 1972] 30209/72 Heading B5A A mould block for pressing disc records includes a number of internal ducts 9, e.g. of spiral form for the passage of heating and/or cooling fluid extending between annular channels 7 and 8 near the centre and edge of the block respectively. Fluid is fed into one of the channels, e.g. the inner one 7, through a number of inlets 4 spaced angularly around the channel and each having a circumferential component of inclination with respect to the channel whereby the fluid is injected at each inlet with substantially the same sense and velocity around the channel. The other channel, e.g. the outer one 8, has a number of angularly spaced outlets 5 also with a circumferential component of inclination. The inlets 4 are supplied from an annular manifold 12 fed by bores 10, 11; the outlets 5 lead into an annular manifold 13 connected by a bore 14 to an outlet bore 15.
Patent GB-1282146-A (GB)
Title: Improvements in or relating to moulding
Inventor: TUGWELL LEWEN BASIL OSWALD
IPC: B29C39/00
Filed: 1969-06-14
Abstract: 1282146 Moulding in destructible moulds SHATTALINE Ltd 8 June 1970 [14 June 1969] 30261/69 Heading B5A A method of moulding an article comprises introducing settable fluid material into a mould, comprising the envelope of an electric light bulb, causing the material to set and then breaking the mould from the set material. The material is preferably a synthetic resin such as unsaturated polyester which may contain water and shrink on setting to produce visible internal cranks in the material as a decorative shatter effect. Colouring material e.g. ink, accelerator and hardener may be added. Articles moulded are paper-weights, door knobs, knobs for lavatory chains, bottle stoppers, rings, earrings, pendants and cuff links. The material may also be cement, plaster of paris, synthetic rubber, settable stone material, an acrylic or epoxy resin.
Patent GB-281271-A (GB)
Title: Improvements in or relating to the manufacture of hosiery
IPC: D04B1/26
Filed: 1927-11-12
Abstract: 281,271. British Celanese, Ltd., (Assignees of Dreyfus, C.). Nov. 26, 1926, [Convention date]. Stockings. - In the manufacture of stockings from knitted fabric containing threads of cellulose acetate, or other organic acid ester, or ether of cellulose the blank is cut or stamped out by a hot knife or other hot tool so that the threads affected are fused or melted together to obviate laddering. The blank is then seamed up longitudinally. The foot portion may be made separately and seamed to the leg portion.
Patent GB-702261-A (GB)
Title: Improvements in or relating to automatic flight control systems for aircraft
IPC: G05D1/10
Filed: 1950-05-05
Abstract: 702,261. Automatic pilots. SPERRY CORPORATION. May 5, 1950 [May 7, 1949], No. 30574/52. Divided out of 702,207. Drawings to Specification. Class 38 (4) The subject-niatter is identical with that of Specification 702,207 but the claims differ. Specifications 646,702, [Group XL(c)], and 663,913 [Group also are referred to.
Patent GB-1115485-A (GB)
Title: Filter plugs for tobacco products,particularly for cigarettes
IPC: A24D3/02
Filed: 1965-07-19
Abstract: 1,115,485. Tobacco smoke filters. ETABLISSEMENT DE RECHERCHE TECHNIQUES. 19 July, 1965 [11 Jan., 1965; 4 Feb., 1965], No. 30653/65. Heading A2C. A. tobacco smoke filter for a cigarette 1 comprises a portion 11 which may be made as a continuous rod and which is provided with one to five capillary smoke ducts 10 embedded in a smoke permeable filling 11. The portion 11 may form part of a composite filter comprising a conventional filter portion 13. The ducts may be straight or helically twisted. Preferably the ducts have a free cross-sectional area in the range of from 0.1-0.3 mm.<SP>2</SP>. The ducts may have narrow openings along a part or the whole of their length to provide communication with a pervious surrounding material. Ducts consisting of small tubes may be fed into rod forming apparatus together with pre-formed segments of surrounding material so that the whole emerges as a rod of circular cross-section.
Patent GB-1120279-A (GB)
Title: Water-insoluble heterocyclic monoazo dyes
IPC: C09B45/00
Filed: 1965-07-19
Abstract: The invention comprises water-insoluble monoazo dyestuffs of the formula <FORM:1120279/C4-C5/1> wherein <FORM:1120279/C4-C5/2> is a residue of benzthiazole, 1,2,3-benzothiadiazole or 2,1,3-benzothiadiazole, which may be substituted with halogen, alkyl, alkoxy, alkanoyl, alkylamino, dialkylamino, alkanoylamino or mercapto groups and A is an aromatic, heterocyclic, cycloaliphatic or aliphatic residue which carries a hydroxyl group at one of the ortho positions to the azo group and which may be substituted further with OH, halogen, alkoxy, alkylamino, dialkylamino, arylamino, phenyl, substituted phenyl, alkoxycarbonyl, aminocarbonyl, substituted aminocarbonyl, alkyl carbonyl, aryl carbonyl or morpholine.  They may be obtained by coupling a diazotized amine of the formula <FORM:1120279/C4-C5/3> with a coupling component of Formula A Specified coupling components include b -. naphthol, p-cresol, p-chlorophenol, p-bromophenol, 3,4-dimethylphenol, 3-dimethylaminophenol, hydroquinone monomethyl ether, 6-chloro-2-naphthol, 2-hydroxy-3-naphthoic acid ethyl ester, 1-phenyl-3-methyl-5-pyrazolone, 1-(o - chlorophenyl) - 3 - methyl - 5 - pyrazolone, 3-hydroxy-5-methylthionaphthene, resorcinol, acetoacetic acid ethyl ester, dimedone and acetylacetone. Examples are given for the production of the dyes.  They may be used for dyeing shaped articles of polyolefin polymers.
Patent GB-751749-A (GB)
Title: Polarised electromagnetic device
IPC: H01H51/22
Filed: 1953-11-06
Abstract: 751,749. Electromagnets. STANDARD TELEPHONES & CABLES, Ltd. Nov. 6, 1953 [Jan. 31, 1953], No. 30791/53. Class 35. [Also in Group XXXVII] A magnet system of e.g. a bell, comprises a pair of armatures 3, 4 connected together by non-magnetic plates 27, 27<SP>1</SP> and centrally pivoted about a spindle 16 fixed to a base plate 17. The armatures have feet 31, 41 outturned (Fig. 2) or in-turned (Fig. 3) held separated by air-gaps 9, 10 from the respective poles of a permanent magnet 1 by a spring strip 19 fixed at one end to the plate 17 and adjustable at its free end by a screw 18. A bracket 20 fixed the magnet 1 to the plate 17. The operating coil 14 is mounted on ends of a pair of U-shaped pole pieces 11, 12 (Fig. 2) the free ends of which are received between the ends of the armatures 3, 4 to form four airgaps 5 ... 8. Hence on application of A.C. to the coil 14 the armature assembly vibrates. In a modification Fig. 5, (not shown), the armature 4 carries a bell clapper which passes beneath the coil.