baber/WOPTO huggingface dataset:
Patent GB-875169-A (GB)
Title: Improvements in amplifiers
Inventor: PURTON RAYMOND FREDERICK
IPC: H03G3/30
Filed: 1958-06-24
Abstract: 875,169. Transistor amplifier, oscillator and automatic gain control circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. June 16, 1959 [June 24, 1958], No. 20234/58. Class 40(6) In a multi-stage transistor amplifier, the output amplitude is made constant by comparing the rectified output with the voltage across a Zener diode and using the difference to control the gain. As shown, a Hartley oscillator VT3 controlled by a crystal XL feeds a voltage at 60 kc/s. to the amplifier comprising transistors VT4, VT5. When the output voltage exceeds the reference voltage provided by the Zener diode Z2 the rectifiers MR conduct, reducing the gain by reducing the emitter voltage of VT4.
Patent GB-352723-A (GB)
Title: Improvements relating to porcelain for use in cooking and to the manufacture thereof
IPC: C04B41/91
Filed: 1930-07-03
Abstract: 352,723. Pottery manufacture. FUSCHI, G., Castelli-Teramo, and KORACH, M., 24, Via Cesare Battisti, Bologna, both in Italy. July 3, 1930, No. 20245. [Class 87 (i).] Porcelain for use in cooking is produced by polishing a moulded article before and after burning, the usual glaze being omitted. Polishing before burning may be effected on a lathe with a polisher of wood or bone, the article being mounted in a support of plaster or wood which may be stuffed to give uniform contact. Polishing after burning may be effected by grinding stones and fine emery. The articles after the first polishing may be stacked in piles for burning with layers of non-fusible granular material between them.
Patent GB-459874-A (GB)
Title: Improvements in and relating to flexible power transmission devices
IPC: F16C1/10
Filed: 1935-07-16
Abstract: 459,874. Bowden mechanism; flexible shafting. ARENS CONTROLS, Ltd., and CLARKE, F. A., 2, South Wharf, Praed Street, London. July 16, 1935, No. 20308. [Classes 80 (ii) and 80 (iii)] In flexible power transmission devices having a compound flexible cable for the transmission of both tension and compression, and in some cases torsion, and comprising an inner cable 8, Fig. 2, surrounded by contacting annular members 9, the whole sliding in a casing 7, one or both ends of the casing has a guide 15 mounted to move on the exterior thereof to which guide the compound cable is directly or indirectly attached. The compound cable is attached to a stepped member 13 having a hollow screw stem 12 which passes through a bore 16 in guide 15 which abuts the member 13 at 14. In modifications, (1) the member 13 is screwed into guide 15 ; (2) is made integral therewith. The casing 7 may be of the flexible form described in Specification 361,221. Where the casing 7 is stiff, flexible joints such as 23, Fig. 1, may be interposed between parts thereof near the ends to permit of angular movement. Such a joint may comprise a sleeve 24, Fig. 7 with coils touching one another and soldered to the ends of casing 7. In a modification, the ends of the sleeve are secured to the casing by ferrules. The casing 7 may be other than circular. Rotary movement may be transmitted; e.g. the guide member may engage the casing through a coarse pitch screw thread, and be connected rigidly or loosely with the inner cable.
Patent GB-1454281-A (GB)
Title: Electrical switch
IPC: H01H13/12
Filed: 1973-04-28
Abstract: 1454281 Mechanical switches LUCAS ELECTRICAL Ltd 18 March 1974 [28 April 1973] 20309/73 Heading H1N In an electrical switch an operating member 22 mounted for sliding movement in the body 19 has a cam face 23 for moving one contact 17 towards a fixed contact 16 and thereby compressing an element 21 of insulating material containing discrete particles of electrically conducting material to electrically connect the contacts 16, 17. The switch may be applied as a courtesy light switch in the door of a vehicle and has a compression coil spring 25 to urge the plunger 22 to the normally on position.
Patent GB-188055-A (GB)
Title: Improvements in metal wings and lifting surfaces for aircraft
IPC: B64C3/18
Filed: 1921-07-29
Abstract: 188,055. Mooney, D. J. July 29, 1921. Planes, construction of.-All-metal wings and control planes for aeroplanes have their thin sheet metal coverings attached to strips shaped to interlock with the framework in such a manner that the coverings can be slid into position. Ailerons and small wings have the coverings in one piece with shallow channels c, Fig. 1, curved over at the edges d, riveted or otherwise secured to the covering at the same pitch as the ribs so as to engage the booms e; but large wings have the covering in strips which may be overlapped and riveted to the channels. Fig. 10 shows a modification in which channels c on the covering-plates a engage channels e on the web b of the rib. which extends between the edges of the plates a and is bent down over one of them, or is slit and the resulting tabs bent down alternately over the two edges. Modifications are described in which the web b does not extend between the plates, and the channels c may be reversed. Fig. 13 shows two alternative constructions in which the plane edge of one plate a<x> is slid beneath the channel member on the web or on the opposed plate and secured by bolts r where necessary. Fig. 14 shows a plate a<x> slid beneath the edge of the plate a and provided with a member n engaging the boom e of the rib. The plate a is provided with a channel of the shape shown. Modifications are also described in which offset plate or channel members engage flat or offset plates on the rib.
Patent GB-1033969-A (GB)
Title: Improvements in or relating to ball joints
IPC: B62D7/16
Filed: 1963-07-31
Abstract: 1,033,969. Ball joints. J. ULDERUP. July 31, 1963 [Aug. 3, 1962; Dec. 24, 1962], No. 30423/63. Heading E2F. A ball joint, in which a preloaded part of a resilient sealing sleeve urges bearing rings of rigid material into engagement with the ball portion of a pin, particularly suitable for hydraulically operated steering linkages used on motor vehicles, comprises a ball portion 3 of a pin 1 mounted in bearing rings 5, 6 arranged in the eye of a housing 8 having a lower flange 9 and a cover 10 pressing down on the plates and fixed in position by rolling-in a rim 11. A synthetic elastic annular sealing sleeve 12 having thickened rims 13, 14 surrounds the neck 2 of the pin and extends within the housing 8 where it is compressed between the flange 9 and the ring 5. The above sleeve may be of foamed or moulded plastics material e.g. polyurethane and the clamped rim may consist of several layers. The bearing rings are made for example of self-lubricating materials such as synthetic plastics material mixed with molybdenum or suitable bearing metals.
Patent GB-1042766-A (GB)
Title: A packaging machine including a mechanism for assisting the wrapping up of a hexahedral article
IPC: B65B49/04
Filed: 1963-05-22
Abstract: 1,042,766. Packaging machines. N.V. MACHINEFABRIEK " VERWACHTING." May 22, 1963 [May 23, 1962], No. 20449/63. Heading B8C. A machine for wrapping an article introduced thereto in a partially wrapped condition comprises a reciprocable pusher 3, reciprocable strips 11 having attached thereto tuck-in tongues 9, 10 for tucking in flaps 14, 15 (Fig. 7, not shown), a pair of vertically movable blades (not shown) for folding trailing flaps (Fig. 5, not shown), members 5, 5a for folding lateral flaps 16, 17 (Fig. 7, not shown), and transversely reciprocable tamping plates 13. In operation, a partially wrapped article is placed in front of the pusher 3 in its fully retracted position (not shown), and the article is then indexed by the pusher past the tuck-in tongues 9, thus effecting tucking in of flaps 15. The pusher is then fully retracted, the strips are moved to the right, and the trailing flaps are then folded by the blades prior to the strips moving to the left to effect tucking in of flaps 14 by the tongues 10. Movement of the article, by a subsequent article, past the members 5, 5a, causes folding of the lateral flaps. Finally, the article is clamped between plates 13 reciprocable by cam surfaces 11a on strips 11. The wrapper may consist of synthetic plastics material and the plates 13 may include heating elements. The machine is adjustable to accommodate articles of varying widths.
Patent GB-1013785-A (GB)
Title: Improvements in or relating to the simulation of radar displays
IPC: G01S7/40
Filed: 1962-05-29
Abstract: 1,013,785. Electronic analogue computors. GENERAL PRECISION Inc. May 29, 1962 [May 29, 1961], No. 20630/62. Heading G4G. [Also in Division H4] In a radar simulator (see Division H4) an analogue computor is used to derive a function: and multiply a reflectance signal by this function. Logarithmic and antilogarithmic function amplifiers are used incorporating diode resistor feedback networks The amplifier is shown at Fig. 5 and comprises an input resistor 79 receiving a tan X signal and a second resistor 80 receiving a unity signal, the ratio of resistors 79 and 80 being such that a (1 + ¥/tan #/) signal appears at their junction. This signal then passes through an amplifier 63 provided with a non-linear diode resistor network 81, to give a - Log /1 + ¥/tan #/) signal at its output. Whereas tan # is always positive, tan # may be positive or negative, so an absolute value amplifier precedes the circuit of Fig. 5, in the- Log (1 + ¥/tan #/) amplifier, Fig. 6. The said absolute value amplifier comprises a diode 87 for applying a + tan # signal to the logarithmic amplifier and a unity gain invertor feedback amplifier 69 for converting an incoming - tan # signal to a + tan # signal at the logarithmic amplifier input. Balancing resistors 92, 93 are provided. Specification 1,015,889 is referred to.
Patent GB-635155-A (GB)
Title: Improvements in armour piercing incendiary shells
IPC: F42B12/06
Filed: 1947-07-30
Abstract: 635,155. Ammunition projectiles. BREVETS AERO-MECANIQUES SOC. ANON. July 30, 1947, No. 20651. Convention date, April 2. [Class -9 (i)] An armour-piercing incendiary shell, primarily for use against targets having an armour plate protected by a relatively thin plate which is spaced from it, comprises two parts 1, 2, arranged in tandem fashion so that they enter successively into action, the front part 1 housing an explosive charge 3e which completely destroys the forward part after penetration of the thin plate, and at least one part housing an incendiary charge. In the construction shown, both parts 1, 2, contain incendiary charges 3i and 3<SP>0</SP>i respectively, and the front part includes also a relay charge 6 which is fired by a pin 5. The part 2, which is armourpiercing, is formed with a shoulder 2a for the part 1 and may also contain an explosive charge.
Patent GB-261469-A (GB)
Title: Improvements in and connected with the manufacture of hair, or hair and textile material or like belts for driving machinery
IPC: F16G1/04
Filed: 1925-08-19
Abstract: 261,469. Gandy Belt Manufacturing Co., Ltd., and Probert, C. H. Aug. 19, 1925. Belts.-A laminated driving-belt is made from woven hair or wool or a mixture of hair or wool and other textile material, saturated with Balata or other suitable gum. The material is heated, folded into layers and then rolled or pressed until the layers adhere and are consolidated. The edges are protected by rows of stitching 3. A waterproof covering 2 is applied to the upper side of the belt. Reference has been directed by the Comptroller to Specifications 2652/76, 1737/79, 12757/89, and 1990/97.
Patent GB-1531028-A (GB)
Title: Device for storing articles and making them available only to their intended consignee
IPC: G07F7/00
Filed: 1976-05-19
Abstract: 1531028 Dispensers LA REDOUTE 19 May 1976 [11 March 1976] 20772/76 Heading B8U Articles are stored in compartments of the device described and can be retrieved by a customer when required. The compartments are formed in modules 2 which are attached to endless chains or belts 4, 5 driven by a motor 12 so that the modules are driven in a closed path. Each module 2 comprises compartments (2a- 2e) disposed at three levels, Fig. 2 (not shown), and the exterior of the device comprises three doors 14a-14c disposed respectively at the three levels for removing an article from a compartment at each level. Located on the rear of each module 2 are coding marks 18a-18e, each corresponding to one compartment of the module 2, which pass by a reading device 20, e.g. a magnetic reading device, during movement of the conveyer. When an article is placed in a compartment a datum reference such as a customer account number is introduced into a memory of a control unit (42) by means of a keyboard (51), Fig. 4 (not shown), whereby that datum reference is associated with the coding number of the coding mark 18 associated with that particular compartment. Later, when the customer wishes to retrieve the same article, he inserts a card (21), such as a magnetic card, bearing his account number into the device, so that the card (21) is read by a reader (22) in operative association with the control unit (42). A comparison is made in the latter between the number on the card (21) and the number associated with the coding marks 18 of the various filled compartments, and if there is correspondence the relevant compartment is brought along by the conveyer 4, 5 to the associated one of the doors 14a-14c. The conveyer then stops and the associated door is unlocked and opened to permit the removal of the article.
Patent GB-699615-A (GB)
Title: Improved two part foundation pile
IPC: E02D5/48
Filed: 1952-08-20
Abstract: 699,615. Piles. MAUNSELL, G. A. Aug. 20, 1952, No. 20919/52. Class 68(ii) A subaqueous foundation comprises a reinforced concrete tubular shank A plugged at the lower end, as by lightweight foam mortar B, light sheet metal, or wood, and driven or jetted into the ground and afterwards extended by driving an extension piece inside the 'shank to pierce or displace the plug and penetrate into the strata beneath. The extension pile may be of concrete or wood, or, as shown, may be a broad flanged rolled steel beam C. The upper part of the extension pile is finally rigidly connected to the shank by grouting or filling with concrete D the annular space where the shank and extension overlap.
Patent GB-1420501-A (GB)
Title: Preparation of cinematrographic film
IPC: G03D15/00
Filed: 1973-05-03
Abstract: 1420501 Applying sound tracks R CARNALL [trading as R & D CARNALL & CO] 24 April 1974 [3 May 1973] 20986/73 Heading G2E A tool for preparing a length of film for the application of a magnetic sound track thereto, comprises a locating groove or slot for the film, and an abrasive member which can be guided so as to slide lengthwise along the said edge. As shown, upper and lower plates 10, 8 are secured together with a slot 12 between them which accommodates the length of film (2), Fig. 1 (not shown). The film is correctly located by means of pins 14 against which one edge of the film abuts, and smaller pins 16 which engage the film perforations. A guide-plate 18 is screwed to the side of lower plate 8, so that plates 10 and 18 define between them a guide way 20. A scraper 24, whose under surface is cross-cut in the manner of a file or rasp, can slide along guide way 20, so that the said under surface has an abrasive effect on the film margin. If the film has a splice of "step" shape where two film ends have been joined together this step is smoothed out by the abrasive action, before the magnetic stripe is added. In the modification of Fig. 4 the scraper 56 is moved to and fro using the end-face 58 of the upper plate as a guide.
Patent GB-531358-A (GB)
Title: A process for the production of highly active silver catalysts
IPC: B01J23/50
Filed: 1939-07-19
Abstract: 531,358. Silver catalysts; olefine oxides. FIFE, J. G. (Naamlooze Vennootschap de Bataafsche Petroleum Maatschappij). July 19, 1939, No. 21009. [Class 1 (i)] [Also in Group IV] A silver catalyst suitable for the oxidation of olefines is prepared by shaping into pills &c. a mixture of finely divided silver and silver oxide or carbonate, and converting the latter into silver by heat or reduction. The mixture may be obtained by igniting a co-precipitated mixture of silver oxalate and oxide or carbonate. Small quantities of alkali compounds may be present as promoters.
Patent GB-574698-A (GB)
Title: Improvements in and relating to the manufacture of paper
IPC: D21F1/66
Filed: 1943-12-15
Abstract: 574,698. Treating effluents from paper works. TRIST, A. R. Dec. 15, 1943, No. 21043. [Class 111] [Also in Group VIII] In a process for the recovery of "fines" from waste paper of paper-making machines, each particle of a finely-divided substance exhibiting a negative electrostatic surface charge, for example kaolin, is coated with deposits precipitated thereon from a colloidal water phase dispersion of a solution, in a liquid not miscible with water, of an elastic film-forming resinous body to form a magma, sulphate of aluminium is added to the magma, which is then mixed with the waste water, and as the final step the hydrogen ion concentration of the mixture is adjusted to a pH value of about 6.5. As an example, a rosin ester such as diethylene glucol ester of polymerised rosin with a non-hardening resin to act as a plasticiser is dissolved in kerosene, preferably heated to about 100‹C. The solution is dispersed in an aqueous solution of a surface tension depressant or a wetting agent, the dispersion taking place in a colloid mill such as for example that described in Specification 554,085. The heated dispersion is suddenly discharged into ice cold water to produce a water phase emulsion which is further diluted with cold water. Dry kaolin is mixed with the emulsion for about two or three minutes, then sulphate of aluminium is added. The resulting magma is added to the waste water to be treated and immediately afterwards caustic soda is added to establish a pH value of about 6.5, and to effect precipitation of the "fines." The "fines" may be coloured if the cold water used for diluting the emulsion before addition of the kaolin, is replaced by an aqueous solution of a selected aniline dye together with an appropriate precipitating medium, for example, a sulphate of tin, magnesium, aluminium, manganese or zinc.
Patent GB-480511-A (GB)
Title: Improvements in and relating to electric incandescent lamps
IPC: H01K1/54
Filed: 1937-07-29
Abstract: 480,511. Electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd. July 29, 1937, No. 21045. Convention date, July 29, 1936. [Class 39 (ii)] In order to prevent blackening of the bulb 10 of a lamp provided with a filament 15 located between leading - in wires 14 and arranged substantially in the plane of the wires, a flat screen 21 is mounted above the filament in a plane closely adjacent, and substantially parallel, to the plane passing through the leads 14 so as to lie in the path of particles which are vaporized from the filament and deposited thereon. In the example, a pair of screens 21 are provided, each supported by and preferably electrically connected to one of the leads 14, and extending to a position adjacent to the opposite lead. The screens may be made of nickel and spot welded to the leads 14 by narrow strips of metal 22 placed over the ends thereof. The filament 15 is of the monoplane type supported by intermediate wires 16, 17 mounted on insulating bridges 18, 19 which are connected to the leads 14 by wire members 20. Specifications 7682/14, [Class 39 (ii)], and 471,301, [Group XXXVI], are referred to.
Patent GB-1103244-A (GB)
Title: Process for producing nitrodiarylamines
Filed: 1965-05-19
Abstract: Nitrodiarylamines are obtained by heating a reaction mixture containing (a) a halogenated nitroaryl compound of formula <FORM:1103244/C2/1> wherein R is H or CH3 and X1 is Cl, Br or I; (b) an arylamine compound of the formula <FORM:1103244/C2/2> wherein X2 and X3 may be the same or different and are hydrogen or a methyl, ethyl, methoxy, ethoxy or nitro radical; (c) an amide which is the formic, acetic or propionic acid amide derivative of an arylamine compound of the said formula; (d) a dehydrohalogenation catalyst which is copper, copper oxide, nickel or a salt of either copper or nickel; and (e) a hydrogen halide acceptor in a reaction vessel under reduced pressure to condense the nitro aryl compound with the arylamine compound, distilling off water produced in the reaction, together with arylamine, dehydrating the arylamine and returning the dehydrated arylamine into the reaction mixture.  The amide employed is preferably the amide of the specific arylamine being converted to nitrodiaryl amine and the reaction may be initiated by simultaneously charging all the required ingredients into the reaction vessel or by forming the amide derivative in situ and subsequently charging other necessary ingredients into the reaction vessel. The amount of amide employed is suitably 0.05 to 1 mole per mole of the halogenated nitroaryl compound and the reaction may be effected at 100-300 DEG C. under a pressure of 100-600 mm. Hg.  The amount of arylamine recycled to the reaction mixture is suitably from 0.1-5 mol/hour per mol. of the halogenated nitroaryl compound.  Specific examples describe the preparation of p-nitrodiphenylamine and p-methyl-p1-nitrodiphenylamine.
Patent GB-1411693-A (GB)
Title: Low expansion alloys
IPC: C22C19/03
Filed: 1973-05-04
Abstract: 1411693 Law expansion Ni-Nb-Fe alloys INTERNATIONAL NICKEL Ltd 3 May 1974 [4 May 1973] 21185/73 Heading C7A A shaped casting having when age hardened a thermal expansion coefficient between 20 and 300‹ C of less than 6Î10<SP>-6</SP>/‹C and a 0.2% proof stress of greater than 350 N/mm<SP>2</SP> at 20‹ C made from an alloy of composition:- Such that % Ni + 0.7 (% Co) - 0.44 [% Nb + 2.85 (% Ti)] - 2(% Ti)/(% Ti + % Nb) = 37 to 40 and % Nb + 2.85 (% Ti) # 10. The total niobium and titanium contents of the alloy may be 4.1 to 10.77 and 0 to 2.4% respectively and the alloy may be melted in air, vacuum or inert gas, investment cast and aged at 550‹C to 700‹C for 1 to 48 hours or if the casting is of large section slow cooled through the ageing temperature range. The casting may be used in rotating and reciprocating machinery e.g. turbine shafts, blades and superchargers employed in propulsion systems.
Patent GB-1513424-A (GB)
Title: Testing apparatus for air-pressure brake systems
IPC: B60T17/22
Filed: 1975-05-19
Abstract: 1513424 Testing vehicle brakes FLUGHAFEN FRANKFURT/MAIN AG 19 May 1975 21210/75 Heading F2E Apparatus for testing pneumatic braking systems comprises an external connections 1 for a compressed air source, external connections 7, 7c for coupling to the brake system under test, a reservoir 4 communicating with connection 1 via check valve 2 and an adjustable pressure reducing valve 3, with connection 7 via a manually adjustable valve 5 and line 13, and with connection 7c via isolating valve 6b, a further line 13<SP>1</SP> containing isolating valves 6, 6a and check valve 2a being arranged between reservoir 4 and connection 7 in parallel with valve 5. External connections 9-9c for coupling to test connections on components of the brake system communicate with pairs of manometers 8a, 8b and a further pair of manometers 8 measures the pressure in reservoir 4 and in line 13.