baber/WOPTO huggingface dataset:
Patent GB-1115989-A (GB)
Title: A method of inserting screw threaded fasteners
IPC: F16B23/00
Filed: 1965-11-05
Abstract: 1,115,989. Inserting self-tapping screws. G.K.N. SCREWS & FASTENERS Ltd. 5 Nov., 1965 [27 Oct., 1965], No. 46900/65. Heading B3N. A method of inserting a succession of identical self-tapping screws into a sheet metal workpiece comprises engaging each screw with a screwdriver, producing an axial impact on the screw by the driver to pierce the work, and then rotating the screw to thus screw it into the work. Each screw may comprise a hardened two-start thread 14 of full form, a tapered threaded portion 13, and a piercing point 12 of pyramidal form.
Patent GB-1412464-A (GB)
Title: Ink drop writing systems
IPC: B41J2/02
Filed: 1972-10-11
Abstract: 1412464 Printers A B DICK CO 11 Oct 1972 [12 Oct 1971] 46930/72 Heading G4H An ink droplet writing system comprises a nozzle-vibrating transducer 14 to which drive signals are applied at a frequency F d , and a droplet charging device 24 to which video pulse signals are applied to charge the droplets passing therethrough, the video pulse signals being applied at a frequency F v , the frequency Fd being related to the frequency F v  and to the shape of the video pulse signals such that an ink droplet is generated while a video pulse is at substantially maximum value. Each video pulse is characterized by a rise time T r , a maximum value time T e  and a fall time T f , the rise time generally exceeding the fall time, and the frequences are related by the relationship F d = F v /(1 - F v .T r ) and F d .T e  # 1.
Patent GB-1304799-A (GB)
IPC: G03C5/02
Filed: 1971-10-08
Abstract: 1304799 Sensitometry FUJI PHOTO FILM CO Ltd 8 Oct 1971 [9 Oct 1970] 47067/71 Heading G2A A liquid silver halide photographic emulsion is sensitometrically tested by (1) exposing a portion of the emulsion (which may be diluted) to a predetermined amount of exposure, (2) adding a developing solution to this exposed portion and also to an unexposed portion, and (3) continuously measuring the development rates of the stirred portions using radiation to which the emulsion is not sensitive. Specifically the development rate is measured using a pair of optical fibres and near infrared radiation and the results used to plot sensitivity and fog curves which may be used to determine the amount of after-ripening the emulsion requires.
Patent GB-1375743-A (GB)
IPC: C12N9/84
Filed: 1972-10-13
Abstract: 1375743 Purification of penicillin acylase ex E. Coli BAYER AG 13 Oct 1972 [14 Oct 1971 13 April 1972] 47362/72 Heading C3H Pure, crystalline penicillin acylase may be obtained from penicillinacylase ex E. coli in solution by a purification which comprises adsorbing the enzyme on an aluminium silicate, separating the adsorbate from the solution and eluting the penicillin acylase from the adsorbate. The method may be applied to a cellular extract of E. Coli wherein the extract containing cell debris is adjusted to pH 3À5 to 5À5 followed by removal of any precipitated material prior to the above adsorption and then subsequent to the adsorption the described enzyme is purified by chromatography on a macroporous ion exchanger, e.g. montmorillonite or bentonite, preferably on a cation and anion active exchange resin alternately, and is then precipitated by adding an inorganic salt. The cells of E. Coli containing the enzyme may be lysed by treatment with methyl isobutyl ketone.
Patent GB-1214072-A (GB)
Title: Improvements to carburetion devices for the internal combustion engines of motor vehicles
Inventor: MENNESSON ANDRE LOUIS
IPC: F02M3/07
Filed: 1968-10-08
Abstract: 1,214,072. Spray carburetters. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES. Oct.8, 1968 [Oct. 11, 1967] No.47662/68. Heading F1B. A carburetter for an internal combustion engine has means for reducing atmospheric pollution by the engine exhaust gases comprising a pneumatic system responsive only when the engine speed exceeds a predetermined value, to the negative pressure in the intake conduit downstream of its throttle member to increase the minimum opening of the throttle. The carburetter has an air intake 3 to a duct 1 containing a throttle member 2 on a pivot 12 operated by an arm 13 connected by a rod 14 to the accelerator of a vehicle in which the engine is mounted. The normal idling speed is set by a stop 15. A lever 16 is loosely mounted on the pivot 12 and carries a pin 17 which comes into contact with arm 13 to open throttle member 2 when lever 16 is moved anti-clockwise. The latter movement is effected by a pneumatic system comprising a pair of diaphragms 26, 26a attached respectively to rods 30, 30a pivoted to a lever 29 connected to lever 16 via a rod 18. The diaphragms are biased to the right by springs 27, 27a in chambers 25, 25a respectively, the latter communicating via orifices 28, 28a and pipe 19 with the suction in duct 1 when a valve 20 is opened above a predetermined engine speed, say 1300- 1400 r.p.m. Thus, when the accelerator control of the vehicle is returned to the idling position from an engine speed exceeding 1300-1400 r.p.m.the increased suction in duct 1 is transmitted through pipe 19 to chamber 25 causing diaphragm 26 to move to the left. Since chamber 25a is relatively large and orifice 28a is small there is some delay before the negative pressure in pipe 19 acts on diaphragm 26a so the latter does not immediately move. Thus the movement of diaphragm 26 and rod 30 causes lever 29 to pivot clockwise about its connection to rod 30a causing opening of the throttle member 2 to a position corresponding to an engine speed greatly in excess of 1300 r.p.m. Consequently, combustion is improved although the engine does not at this time act as a brake for the vehicle. As the negative pressure progressively builds up in chamber 25a, diaphragm 26a and rod 30a move to the left causing lever 29 to pivot anti-clockwise about its connection to rod 30 and effecting slight recloring of the throttle member 2 into a fast idling position corresponding to about 1200 r.p.m. When the engine speed has fallen to about 1300 r.p.m. valve 20 vents pipe 19 to atmosphere and throttle member 2 drops back into its normal idling position so that the engine can act as a brake for the vehicle. In the arrangement shown, the valve 20 is operated by an electromagnet 21 connected to an electronic speed sensing system A, e.g. as described in Specification 1,099, 350, but the valve may be operated by a centrifugal governor. The carburettor may be combined with additional anti-pollution devices, such as those disclosed in Specification 1,214,071.
Patent GB-1293253-A (GB)
Title: Enzyme-containing bleach compositions
IPC: C11D3/386
Filed: 1970-10-07
Abstract: 1293253 Enzyme-bleach compositions COLGATE-PALMOLIVE CO 7 Oct 1970 [9 Oct 1969] 47701/70 Heading C5D [Also in Division D1] A cleaning composition comprises a proteolytic enzyme and an ammonium or alkali metal monopersulphate triple salt as oxidant. The enzyme may be derived from subtilisin. The persulphate salt maybe 2KHSO 5 .KHSO 4 .K 2 SO 4 . The composition may also include a surface active agent, a builder salt, an antiredeposition agent, an optical brightener, and/or a perfume. It may be used in water. In examples, the surface active agent is sodium dodecylbenzene sulphonate or sodium tridecylbenzene sulphonate; the builder salt is pentasodium tripolyphosphate, sodium silicate, or sodium sulphate; the antiredeposition agent is sodium carboxymethyl cellulose and the optical brightener is tetra-anilino stilbene, dimorpholino-stilbene or oxazole.
Patent GB-1113247-A (GB)
Title: Improvements relating to high voltage electrical insulators
Inventor: AMER DONALD FOSTER
IPC: H01B17/14
Filed: 1963-12-04
Abstract: 1,113,247. Insulators. A. REYROLLE & CO. Ltd. 27 Nov., 1964 [4 Dec., 1963], No. 48001/63. Heading H2C. Each of a number of units 11 of hollow or dished form, intended to be nested together with their metal cores 12 axially overlapping to form an insulator, consist of a rigid hollow metal core 12 embedded in a layer or coating of insulating material 14. The insulation layer 14 which can include a filler such as titanium dioxide may be formed by immersing the heated core 12 in a fluidized bed of powdered casting resin or by electrostatic depoistion. The metal cores 12 which may be of aluminium have flange portions 12A which when coated with the insulation 14 provide weather sheds 17. The insulator elements are cemented together with a synthetic resin. In another embodiment (Fig. 3, not shown) the metal elements are of generally dish-shaped construction.
Patent GB-1199045-A (GB)
Title: Gas Electrodes and Electrochemical Cells
IPC: G01K11/26
Filed: 1967-10-25
Abstract: 1,199,045. Gas electrodes; metal/air cells. YARDNEY INTERNATIONAL CORP. 25 Oct., 1967 [25 Oct., 1966], No. 48549/67. Heading H1B. A gas electrode 1 has corrugated surfaces, one of which, 3, 3<SP>1</SP>, 3<SP>11</SP>, is a single electrochemically active surface. As shown in Fig. 1, the air electrode 1 contains Pt, Ag or C or any two of these as catalyst and is used opposite a rotating Zn electrode 2 according to Specification 1,135,447. In another embodiment (Fig. 2, not shown) the corrugated gas electrode is separated by a corrugated separator from a corrugated, thin, plated Zn electrode, whilst in a final embodiment (Fig. 3, not shown) two gas electrodes are placed one on each side of the counter electrode, all the electrodes being corrugated concentrically, the corrugations matching in radius so that either the gas electrodes or the counter electrode can be rotated. Wipers can also be used in conjunction with the rotating electrodes.
Patent GB-1512549-A (GB)
Title: Process for the treatment of wood
IPC: B27K3/50
Filed: 1975-11-26
Abstract: 1512549 Preserving wood HAGER AB 26 Nov 1975 48660/75 Heading A5E [Also in Division D1] A process for treating wood comprises impregnating wood with a solution containing a preservative dissolved in a water-free organic solvent and thereafter treating the wood with a high boiling point oil composition at elevated temperature under vacuum, the difference in boiling point between the solvent and the oil being such that the solvent then evaporates from the wood. The impregnation step is preferably carried out in a metal cylinder using the Rueping or Lowry "empty cell" method terminating with a vacuum step. The preservative may be a chlorinated phenol or naphthalene, nitrophenol, cresol, naphthol, a fatty acid (6-12C) or a tin or copper compound e.g. tributyl tin oxide and is dissolved in the solvent optionally with the aid of a solubilising agent such as tall-oil or naphthenic acid. The solvent preferably has a boiling point below 200‹C and may be a mineral oil such as toluene or xylene or a chlorinated hydrocarbon or a mixture of mineral oil with chlorinated hydrocarbon to provide fire retardancy. The high boiling point oil has a boiling point of at least 250‹C and may be a drying oil such as linseed oil, tall-oil or an alkyd, or a non-drying oil e.g. a paraffin oil or a mixture of the two. It may contain pigments, fire retardants such as tricresyl phosphates and chloroparaffins, and also the preservatives mentioned above. The oil treatment step may be effected at between 60 and 110‹C preferably at a pressure of 200 mm Hg or below, and provides a finish on the wood as well as the means for removing solvent.
Patent GB-1351965-A (GB)
Title: Fuel injection systems for internal combustion engines
IPC: F02D41/18
Filed: 1971-10-20
Abstract: 1351965 Regulating I C engine fuel injection ROBERT BOSCH GmbH 20 Oct 1971 [21 Oct 1970] 48752/71 Heading F1B [Also in Division G1] In an I.C. engine fuel injection control system, fuel is metered by a valve 7 in dependence upon the position of a device 2 arranged in the intake manifold 1 of the engine so as to be displaceable in dependence upon the quantity of air flowing to the engine, the valve 7 being controlled by an adjusting device, via a servo regulating circuit to the input of which is supplied a signal dependent upon the displacement of device 2. As shown, the adjusting device includes an electromagnet 20 which controls the angular position of a three-dimensional cam 21, the cam acting on a control member 24 of valve 7. The position of device 2 controls an inductive transducer 11, an inductive transducer 12 being controlled by the electromagnet 20. These transducers are arranged in a bridge circuit whose output is supplied to the electromagnet 20 until the bridge is re-balanced. Additional transducers 15 are shown connected in the bridge so that engine and air temperature are taken into consideration. A damping device 17, 18, 19 is also provided for the device 2. The axial position of the cam 21 is controlled by a piston 22 in dependence upon intake manifold pressure. In a second embodiment Fig. 2 (not shown), the adjusting device merely comprises an electromagnet, and a further inductive transducer is arranged in the bridge and is controlled by the position of the butterfly valve 3. The damping device is also modified and comprises a friction brake.
Patent GB-1275368-A (GB)
Title: Aromatic carboxylated compounds
Inventor: CASSAR LUIGI
IPC: C07C51/00
Filed: 1970-10-15
Abstract: 1275368 Aromatic carboxylic acids and derivatives thereof MONTECATINI EDISON SpA 15 Oct 1970 [20 Oct 1969] 48964/70 Heading C2C Carboxylic acids, salts, esters and amides are made by reacting an aromatic chloride, bromide or iodide with carbon monoxide and a compound containing an active hydrogen atom, in the presence of nickel tetracarbonyl, in an organic solvent having a dielectric constant above 30 Debye and in the presence of base at 20 to 130 C. The reaction can be effected in the presence of an inorganic halide salt, e.g. sodium bromide. The examples describe the preparation of benzoic acid from bromobenzene, 1-naphthoic acid from 1-chloronaphthalene, 2,4,6-trimethyl-benzoic acid from bromomesitylene, phthalic acid from o-chlorobenzoic acid, anthranilic acid from o-bromoaniline, p-acetylbenzoic acid from p-bromoacetophenone and o-methoxyl)enzoic acid from 2-bromoanisole; methyl benzoate and N-hexylnaphthoylamide (-1) are also obtained.
Patent GB-1156143-A (GB)
Title: Potentially Adhesive Sheet
Inventor: BATES HAROLD
IPC: C09J7/21
Filed: 1965-11-18
Abstract: 1,156,143. Coated adhesive sheet. COURTAULDS Ltd. 17 Nov., 1966 [18 Nov., 1965], No.48999/65. Heading B2E. [Also in Division B5] An adhesive sheet comprises an open-work fabric of which the strands are coated with a mixture having a melting point of at most 160C. of a plasticiser with a copolyamide soluble in a mixture of 90 parts by weight of methane and 10 parts of water. Specified fabrics are muslin, light-weightfabrics, knitted materials and scrim. Specified polyamides are nylon 6/66, nylon 6/11 and nylon 66/11. Specified plasticisers are o- and p-toluene sulphonamide, N-methyibenzene sulphonamide and N-bu2y1benzene sulphonamide. The mixture is applied from aqueous alcoholic solutions by brushing, dipping, padding or spraying, the solvent then being allowed to evaporate.
Patent GB-1440501-A (GB)
Title: Methods of regulating the air/fuel mixture supply of internal combustion engines
IPC: F02M23/00
Filed: 1973-10-23
Abstract: 1440501 Treating IC engine charge REGIE NATIONALE DES USINES RENAULT AND AUTOMOBILES PEUGEOT 23 Oct 1973 [24 Nov 1972] 49291/73 Heading F1B The richness of the mixture supplied to an engine M by a carburetter C is adjusted by supplying additional air under pressure to the intake manifold A. The flow of additional air is controlled in accordance with barometric pressure and the vacuum in the carburetter venturi 11 by a valve 3 operated by a capsule or bellows 4 and a valve 5 operated by a servo 6 connected to the  venturi 1 and manifold A. The additional air is supplied by an engine driven pump 1 which may also supply air to the exhaust system which includes a catalytic converter.
Patent GB-995216-A (GB)
Title: Improvements relating to arc furnaces
IPC: C07C11/24
Filed: 1963-12-13
Abstract: 995,216. Arc furnaces. E. I. DU PONT DE NEMOURS & CO. Dec. 13, 1963 [Dec. 17, 1962 (2)], No. 49417/63. Heading H5H. A rotary arc furnace for the production of acetylene from methane is provided with a rotary/reciprocating scraper to remove carbon deposits. As shown, the arc between a cathode 3 and water-cooled tubular anode 4 is rotated in the electromagnetic field of a coil 11. Methane or like hydrocarbon introduced at 5, and water introduced through a quench ring 6 cools the product and the scraper 21. The scraper is mounted on a hollow shaft 26 by which it can be reciprocated by a pneumatic piston 32 while it is being rotated by a motor 39 driving through gears 37, 38, to remove the carbon deposit 12. Cooling water passes through shaft 26 to bores in the scraper. Figs. 2 . . . 13 (not shown) illustrate three forms of two-bladed scraper. In Figs. 8 . . . 10 (not shown) the scraping edge is provided by tungsten carbide inserts. In Figs. 11 . . . 13 (not shown) the scraping face carries industrial diamond inserts. Figs. 14 . . . 16 (not shown) illustrate a three-bladed scraper. Specification 965,778 is referred to.
Patent GB-1527618-A (GB)
Title: Telephoto lens system
IPC: G02B13/02
Filed: 1975-12-08
Abstract: 1527618 Telephoto lenses NIPPON KOGAKU KK 8 Dec 1975 [28 Dec 1974] 50223/75 Heading G2J A telephoto lens system comprises two convergent lens groups separated by a divergent lens group which is movable to effect focusing. Optical data of particular examples are given.
Patent GB-1441783-A (GB)
Title: Shredder
IPC: B26D1/28
Filed: 1973-10-30
Abstract: 1441783 Comminuting apparatus GARBALIZER CORP OF AMERICA 30 Oct 1973 [23 Feb 1973] 50478/73 Heading B2A A waste comminuting apparatus comprises a shaft 27, Fig. 2, bearing an assembly of spaced blades 10 and a cooperating fixed grid of bars 39, 44 Fig. 1, arranged so that the rotatable blades pass clear of its under surface and debris is projected centrifugally at the space C and does not render and jam the spaces 5 between the bars. Any debris remaining is wiped clear by a wiping blade 47. The blades 'are secured to the shaft 27 in a helical pattern by securing to hubs 24 which are keyed to the shaft as at 26. Shear pins 35, see also Fig. 5 yield in the event of a blockage.
Patent GB-1104850-A (GB)
Title: Improvements in or relating to electric motors
Inventor: HOK-SHOO TING
IPC: H02K5/14
Filed: 1965-11-29
Abstract: 1,104,850. Electric motors. KADER INDUSTRIAL CO. Ltd. 29 Nov., 1966 [29 Nov., 1965], No. 50637/65. Heading H2A. Hollow conductive housings 31 in which are slidably received respective brushes (42) Fig. 2, of an electric motor suitable for toys have exterior surfaces which are at least partly tapered and have projecting spurs (38) by which they are held in stator body cylindrical apertures 27 from which they project outwardly to form exterior wiring contacts. As shown, the tapered portions 31a extends from the spurs (38) to a head 35... 37 forming the contact which may be engaged by either sprung elements or soldered wires. The brushes engage commutator segments 23 to lugs 22 of which are connected windings 21 on three equispaced rotor polepieces 19. The stator comprises a moulded plastics cuboidal body 11 journalling at 17, 18 the rotor shaft 16, two magnetic polepieces 14, and a metallic covering portion 15.
Patent GB-1091952-A (GB)
Title: Pickup arm
IPC: G11B3/00
Filed: 1964-12-14
Abstract: 1,091,952. Gramophone pick-up arms. USINES GUSTAVE STAAR S.A. Dec. 14, 1964 [Nov. 6. 1964], No. 50798/64. Heading G5R. A metal cover 4 is fitted over the central portion 3 of a unitary pick-up arm made of a plastics material. The portion 3 and cover 4 may both be of U-section channel form with their open sides facing respectively upwards and downwards.
Patent GB-1367011-A (GB)
Title: Linear shaped-charge device
IPC: F42D3/00
Filed: 1972-11-03
Abstract: 1367011 Shearing J J RIDGEWAY 3 Nov 1972 [25 Nov 1971 7 Feb 1972] 50821/72 Heading B3W [Also in Division F3] A linear shaped-charge for cutting metal pipes and other workpieces under water comprises an annular chamber 6 containing an explosive charge, and a gas-tight stand-off chamber A. The shaped charge is carried by a spider 23 and includes an inflatable tube 24 used for displacing the water between the charge and the pipe. The linear 5 has a thickness between 0À162 and 0À198 inch and an apex angle of 82-88 degrees. The stand-off distance is at least 2 inches and preferably 3¥ inches. The casing of the charge is made of extruded aluminium. The explosive is a mixture of liquid components which individually, are non-explosive. A charge, Fig. 2 (not shown), for clamping around the outside of pipes comprises two semicircular parts (10, 10<SP>1</SP>) hinged together.
Patent GB-1353526-A (GB)
Title: Stored-programme telephone switching systems
IPC: H04Q3/545
Filed: 1971-11-03
Abstract: 1353526 Automatic exchange systems NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP NIPPON ELECTRIC CO Ltd HITACHI Ltd OKI ELECTRIC INDUSTRY CO Ltd and FUJITSU Ltd 3 Nov 1971 [6 Nov 1970] 51106/71 Heading H4K In a stored programme controlled exchange comprising a pair of synchronously operative central controls CC and a plurality of non- duplicated call stores MEM that communicate with the controls over a duplicated data bus system, a pair of asynchronous back-up stores are provided for receiving at periodic intervals the contents of the call stores. The back-up stores are magnetic drums or discs MDU which by their very nature cannot run exactly synchronously. It is arranged during data transfer thereinto that they are addressed successively over respective ones of a duplicated bus system CHM, SCH, CHB that is also used for transferring signalling data between the processor and digital signallers SGU that permit high speed digital sending over a dedicated interchange order wire D link. This same bus system is utilized for conveying signals to hybrid junctors HYB which serve as links for four wire connections switched through an auxiliary 4-wire network TLN-T that is coupled to outlets of a conventional 2-wire line link frame via further 2/4 wire converters HYB. The drums apart from their use as back-up stores in the event of fault conditions are used additionally for storing relatively infrequently required programmes, i.e. programmes that do not have to be accessed at very high speeds. One central control works on line while the other may, while off line, be effecting additional processing. In the event of a fault however it takes over immediately, any data that it may be currently processing being shunted into the drum store pending a return to normality. Scanning and pulse distributing between processors and switching network peripherals follows the usual lines, the only noteworthy feature being that binary code is used between the processor and main pulse distributers SRD whereas 1 out of n code is used from thereon. Signals are applied to and from the busses via transformer couplings having been converted from D.C. logic levels in the processor into A.C. pulses by means of conventional cable drivers (Figs. 4a, 4b, not shown). Duplicate power supplies working on and off line for the whole of the common control circuitry or separate supplies for selected items of common control are provided (Figs. 7a, 7b, not shown).
Patent GB-1397358-A (GB)
Title: Slit shutter for a camera
IPC: G03B9/32
Filed: 1973-11-05
Abstract: 1397358 Shutter mechanism PRONTORWERKE ALFRED GAUTHIER GmbH 5 Nov 1973 [15 Nov 1972] 51260/73 Heading G2A A shutter mechanism comprises a windowopening blind 9 and a window-closing blind 9' which move in concertina manner between plates 10 of L-shaped cross-section, the outer ends of the blinds being fixed and their inner ends being attached to end-plates 8 and 8' having pin/slot connections to operating links 3/4 and 3'/4'. Links 3 and 4 (links 3 and 4 being similar) have fixed pivots 5 and 6 and an end-coupling 7 held by a release pawl 17 against the action of a spring 12. Pins 13 and 14 limit movement of links 3 and 4. The blinds may be of rubber-coated cloth, Fig. 3 or rigid strips hinged together, Fig.4.