baber/WOPTO huggingface dataset:
Patent GB-563696-A (GB)
Title: Improvements in or relating to electric wave translating systems
IPC: H03G5/24
Filed: 1943-04-30
Abstract: 563,696. Valve amplifying circuits. WESTERN ELECTRIC CO., Inc. April 30, 1943, No. 6857. Convention date, May 16, 1942. [Class 40 (v)] An electric wave translating system comprises a modulator, included in a first feedback circuit and having means to reduce or prevent direct transmission from the feedback circuit through the modulator, and also included in a second feedback circuit which includes a demodulator. The arrangement is applicable to voice &c. carrier frequencies for reducing the amplifier band width and produces a form of self tuning or noise rejection in that the frequencies passed by the amplifier depend on the frequency of highest amplitude applied to the input and the band width depends on the lowest frequency fed from the demodulator to the modulator. The feedback path is non-linear and preferably the modulator and demodulator have square law characteristics. The apparatus is applicable to the elimination of disturbances as in measuring equipment and to the selection and reinforcement of the carrier wave in a receiver. Fig. 1A shows an arrangement in which the modulator 7 is of the copper-oxide doublebalanced type and the input is selected in the band selector 2 and passed through amplifier 3. Bridges 18, 19 provide the two feedback paths to the modulator, one of which includes the demodulator 8 and the repeating coil 9 to exclude direct current. The output is fed back to the input through the adjustable attenuator 10. A demodulated output may be obtained by closing switch 12. Amplifiers 15, 16, 17 may be provided to render the signal paths uni-directional. Fig. 5 shows a modulated carrier detecting circuit in which non-linear feedback is provided to the input of amplifier 3 from the balanced modulator 31. Autotransformer 27 feeds demodulators 33, the voice frequency from which provides one input to the modulator and is combined therein with part of the original carrier wave from the auto-transformer. Potentiometer 37 is provided to obtain a good balance in the modulator which may, however, be unbalanced to produce linear positive or negative feedback. For voice frequencies, a local oscillator and doublebalanced modulator and demodulator may be used, together with an amplifier for the carrier wave produced as previously described.
Patent GB-435259-A (GB)
Title: Improvements in or relating to rock drills and like percussive tools
IPC: B25D17/08
Filed: 1934-03-05
Abstract: 435,259. Rock drills. COCK, B., Woodbine, Camborne, and HOLMAN BROS., Ltd., Camborne, Cornwall. March 5, 1934, No. 6999. [Class 124] The tool chuck or chuck sleeve 12 of a rock drill carries a member 13 the inner surface of which bears flutes 14 to engage the corresponding projections on the piston. The member 13 is attached to the part 12 by a screw thread having a tapering external diameter. In a modification the fluted member having the external tapering thread is secured in the piston.
Patent GB-942049-A (GB)
Title: Improvements in machines for shearing animals
IPC: B26B19/24
Filed: 1960-02-29
Abstract: 942,049. Horse &c. clippers. A. G. FUR FEINMECHANIK. Feb. 29, 1960 [March 3 1959], No. 7052/60. Heading B4B. In a horse &c. clipper, having a suctionoperated drive, the shearing head unit 1 and the suction control assembly 3 are self-contained units separately connectable to the drive unit 2 and easily disengageable therefrom. The shearing head unit is secured to the drive unit by screws 4, 5 and includes a movable cutter 9 reciprocated by a pivoted shaft 24 housed in a long bush 25 and carrying an eccentric roller 23 which is received in an annular gap 21 formed between bosses 18, 19 on the pistons 11, 12 by a spacer 20 on a rod 17 connecting the pistons. The suction control assembly 3 is secured to the drive unit by screws 6, 7 and includes a lever 13 shaped to engage in the annular gap 21 and rocked by the reciprocation of the pistons resulting from the application of vacuum through the pipe 16 to the ends of the cylinder 10 outside the pistons, the lever 13 operating a change-over valve so that alternate ends of the cylinder are placed in communication with the suction pipe 16 through the ducts 14, 15 and filter 27. In a modification the cylinder 10 is constructed so that a separate liner 28 is unnecessary.
Patent GB-649928-A (GB)
Title: Curing polymeric materials
IPC: C08L75/06
Filed: 1948-03-08
Abstract: Butadiene-acrylonitrile interpolymers are cured in admixture with an organic polyisocyanate modified polyester.  The curing may be effected by heating the mixture on rolls with or without sulphur, sulphur chloride, and/or accelerators.  To facilitate shaping organic swelling agents may be added.  Suitable glycols, dibasic acids, and polyisocyanates are specified and the following may be added: fillers-carbon black, iron oxide, clay, blanc fixe, asbestos, whiting, lithopone; plasticizers-tricresyl phosphate, dibutylphthalate, butyl phthallyl butyl glycollate, sulphonamides; stabilizers-hydroquinone, N : N1-hexamethylene bis-ortho p  hydroxy benzamide, a  : a -bis-(2-hydroxy-3 : 5-dimethyl phenyl)-butane.  The modified polyester employed preferably has a molecular weight above 10,000, as indicated by its having an intrinsic viscosity in chloroform solution of more than 0.6.  The interpolymer and the modified polyester may be admixed in solution in for example chloroform, carbon tetra-chloride, trichlorethylene, acetone, benzene or toluene, or they may be milled together alone or in the presence of solvents, or the unmodified polyester and the interpolymer may be mixed together with an organic polyisocyanate and the mixture heated to form the modified polyester in situ.  The products may be used for gaskets, packings, hose, diaphragms, fuel containers, insulation, balls for games, tyres, protective clothing, leather cloth, floor coverings and lacquers.  Examples describe mixtures of polyethylene sebacate modified by hexamethylene diisocyanade and "Hycar" (R.T.M.) or "Perbunan" (R.T.M.) with or without the usual vulcanizers, fillers and stabilizers.
Patent GB-356672-A (GB)
Title: Improvements in and relating to electric discharge tubes
IPC: H01J21/16
Filed: 1930-03-04
Abstract: 356,672. Thermionic valves. EDISON SWAN ELECTRIC CO., Ltd., 123, Queen Victoria Street, London.- (Assignees of Spanner, H. J.; 37A, Sõchischestrasse, Wilmersdorf, Berlin.) March 4, 1930, No. 7134. Convention date, March 4, 1929. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] A discharge tube having an external control electrode, particularly a tube for generating oscillations or for use in low frequency amplification, is filled with gas or metal vapour at a pressure below 0-1 mm. Dark ray cathodes are preferably used, and the filling is a gas of high atomic weight. Helium or argon at low pressures may however be used.
Patent GB-180105-A (GB)
Title: Improvements in steam-driven machinery for power plants and ship's propulsion
IPC: B63H23/00
Filed: 1921-03-07
Abstract: 180,105. Mickelsen, W., and Rebbeck, F. E. March 7, 1921. Driving-arrangements for screw propellers.-In power plant or ships' machinery where the main engines are driven by steam, the auxiliary machinery is driven by internal-combustion engines either direct or through electrical transmission. The heat of the exhaust may be used for heating the feed water for the boiler of the main machinery. The propeller shafts P are driven by turbines A or reciprocating steam engines. The auxiliary machinery a is driven by internal-combustion engines b through an electrical transmission. The exhaust is conducted to a pipe D which leads to the feedwater-heater c.
Patent GB-290267-A (GB)
Title: Improved manufacture of cast iron
IPC: C21C1/00
Filed: 1928-03-08
Abstract: 290,267. International Nickel Co., (Assignees of Coyle, F. B.). May 13, 1927, [Convention date]. Drawings to Specification. Alloys.-A white or mottled cast iron has added to it in the ladle, after it has been tapped from the furnace, one or more of aluminium, silicon, nickel and manganese to induce the formation of graphite and produce a grey cast iron of high tensile strength. In three examples the additions comprised 0.5 per cent aluminium, 0.75 per cent silicon or 0.25 per cent silicon. 1.25 per cent nickel, about 0.5 per cent manganese being added in each example. Reference has been directed by the Comptroller to Specification 253,402.
Patent GB-344229-A (GB)
Title: Improvements in slider fasteners
IPC: A44B19/04
Filed: 1930-03-06
Abstract: 344,229. Sliding-clasp fastenings. KRAKOWSKY, M., 52, Bettinastrasse, Offenbach-on-Main, Germany. March 6, 1930, No. 7390. [Class 44.] The interengaging elements a of sliding clasp fasteners have recesses c in their edges to accommodate the wedge-shaped slides e so that this can be of relatively small size. The slider e consists of a web e with side-pieces d to fit the recesses c, a rib g and a finger ring f.
Patent GB-253980-A (GB)
Title: Improvements in direction indicators for road vehicles
IPC: B60Q1/34
Filed: 1925-03-19
Abstract: 253,980. Mason, A. E. March 19, 1925. Illuminated transparency indicators.-A direction indicator for road vehicles comprises a screen and means for producing separately upon the screen two or more signals consisting of pointing devices, in such manner that if both or all signals were produced simultaneously they would intersect or cross. A part of the pointing device may consist of a beam or streak of light projected .across the screen. Each indicator comprises a box 2, Figs. 1 and 3, containing three electric lamps 4, housed in recesses 9 in the base, from each of which extends a diametrical channel 10 to accommodate the electric leads and to allow the light from the bulbs for to be projected across the screen. The front of each indicator is covered by a screen of transparent or translucent coloured material, roughened on one side by sandblasting or painted. The interior of the box 2 is provided with webs 37, 38 in the shape of arrow heads enclosing each lamp 4, a space 39 being left in the web so that a streak of light can pass diametrically across to the opposite side of the box to be projected on the screen as the tail of the arrow. Each lamp is held in a spring .clip 27 into which it is inserted laterally, electric contact being made through a spring plunger 33. Each lamp 4 is connected by a cable to a switch provided with four operating members, two of which when depressed illuminate " left " and " right " signals respectively in both front and rear indicators, whilst the other two when depressed illuminate respectively a " forward " signal in the front indicator and a " stop " signal in the rear indicator. The illuminated arrows may be obtained in a variety of ways by suitably arranging the lamps and diaphragms, for example, the tails of the arrows may be bounded by walls and a lamp inserted in each tail as well as in the arrow head, or the head of the arrow may be illuminated by reflected light from the lamp in the tail. In Fig. 19, the shape of the arrow is obtained by interposing shields 52 in the path of the rays emanating from the lamp 51. The screen may be a stencil plate on which the intersection signals are producted, further, the lamp bulbs mav be painted, leaving an unpainted portion which will determine the shape of the light or shadow which is cast. The electric lamps may be disposed in advance of the screen so that the shadows or signal is cast on to the front.
Patent GB-540652-A (GB)
Title: Improvements in or relating to aircraft structures
IPC: B64C1/00
Filed: 1940-04-24
Abstract: 540,652. Aircraft structures. BUDD MANUFACTURING CO., E. G. April 24, 1940, No. 7417. Convention date, July 19, 1939. [Class 4] The strengthening element of a stressed skin S of an aircraft structure, such as a wing, which is interposed between the skin and the ribs R or frame of the structure, comprises a number of channel members C interconnected through their side walls 21 and connected to the skin at their bases which latter are provided with longitudinally extending offsets 18 to give a corrugating effect to the composite element. The offset portions 18 are of acurate cross section and are arranged between the flat portions 17 of the bases which are welded to the metal skin and the side walls are provided with flanges 22 which are welded to the rib members R. The parts 17 and the side walls are joined by flat corner parts 20 which add to the corrugating effect and strengthening flanges 24 are provided on the flat parts 22. The side walls are also welded together, the arrangement of the parts allow of the easy insertion of an electrode for making the spot welds. The rib member R may comprise a channel member the side walls 12 of which have connecting flanges 14 and the base 10 has a stiffening bead 11. In a modification, the angular corners 20 are rounded and one of the side walls ends in an edge flange parallel with the skin for attachment to the flanged channels of a stringer.
Patent GB-125788-A (GB)
Title: Improvements relating to Ship Construction.
IPC: B63B3/14
Filed: 1918-05-03
Abstract: 125,788. Quasi-Arc Co., and Cole, W. L. May 3, 1918. Frames and framing.-In a welded ship construction having frame members, bars, and stiffeners without flanges at their base edges, the frames &c. are temporarily held prior to welding by angle lugs and bolts a, d, Fig. 9, or by hook bolts g, Fig. 11, or screwed staples k, Fig. 14. The angle lugs a may be arranged on both sides of the frames &c. b, as shown in Fig. 9, with intermittent fillet welds f on one or both sides thereof, as required. In order to prevent these flangeless frames &c. b from sagging or buckling during erection, they are interconnected and spaced by temporary stiffening-members consisting of tubes or ferrules m and bolts l, as shown in Fig. 16.
Patent GB-707494-A (GB)
Title: Improvements in lipstick compositions
IPC: A61K8/49
Filed: 1952-03-24
Abstract: A lipstick composition contains a bromo-fluorescein and an antihistamine compound in an amount to reduce the irritative effect of the bromofluorescein.  0.3 to 15 per cent bromofluorescein is employed as the mono-, di-, tri-, tetra or higher bromofluorescein, of which the di- and tetra-compounds are preferred.  0.25 to 30, and preferably 0.5-5, per cent antihistamine is used.  The composition may also contain (a) up to 20 per cent of a propylene glycol as a solvent for the bromofluorescein; (b) 25 to 45 per cent of a mineral or vegetable oil such as castor oil, and lanolin; (c) 25 to 45 per cent of a wax, e.g. mixture of beeswax, carnauba wax, ozokerite and paraffin wax, and lecithin; (d) 5 to 15 per cent of lake colours and/or a pigment; (e) 0.025 to 1 per cent saccharin; (f) up to 1 per cent of a non-ionic wetting agent, e.g. polyethylene glycol mono-laurate and (g) perfume and preservative, e.g. butyl p-hydroxybenzoate.  Specified antihistaminics are: (N-p-methoxy-benzyl)-N1, N1 dimethyl N-a-pyridyl ethylenediamine maleate, beta-diethylamino-ethyl esters of a, a-diphenyl acetic acid, N, N-dimethyl-3-phenyl-3-(2-pyridyl)-propylamine, and N, N-dimethyl-2-(di-phenylmethoxy) ethylamine.
Patent GB-1333685-A (GB)
Title: High voltage circuit breaker and method of increasing impedance in a high voltage circuit breaker
IPC: H01H33/59
Filed: 1972-02-18
Abstract: 1333685 Arc extinction in switches HUGHES AIRCRAFT CO 18 Feb 1972 [9 March 1971] 7614/72 Heading H1N A high voltage circuit-breaker comprises a line switch 50 and an impedance-increasing means 52 in parallel with the switch 50, the means 52 including an energy-absorbing resistor 58 in series with a cyclically-operable switch 56 which is operated so as to provide an increasing ratio of off to on time, and a parallel capacitor 54 to limit the rate of voltage rise upon opening of the switch. The line switch 50 may be a conventional circuit-breaker, or a vacuum switch with a circuit to provide an artificial current zero as in Specification 1,332,777. The switch 56 may be a crossed field switch as indicated, a parallel capacitor 60 being provided to enable switching off at rising high voltages. In other arrangements, the switch 56 may be formed by two triggered vacuum gap devices, Fig. 7 (not shown), two triggered vacuum gap devices and a triggered spark gap, Fig. 8 (not shown), or a crossed field switch in combination with a triggered vacuum gap device, Fig. 9 (not shown). Fig. 1 (not shown) illustrates a high voltage D.C. system using two D.C. circuitbreakers.
Patent GB-595277-A (GB)
Title: Improvements in or relating to marine propulsion systems
IPC: B63H23/00
Filed: 1945-03-26
Abstract: 595,277. Propelling ships. MILLARD, B. S. March 26, 1945, No. 7636. [Class 114] The shafts of a multi-screw ship are driven from a common power unit, two at least of the shafts being fitted with variable pitch propellers for manoeuvring purposes. The engine 1 drives the shafts 3 through gearing 2, the wing shafts being fitted with variable pitch propellers 4 controlled by units 9. In a modification, the shafts are driven electrically from the common power unit.
Patent GB-690151-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L9/04
Filed: 1951-04-05
Abstract: 690,151. Brushes. HOOVER, Ltd. April 5, 1951 [April 7, 1950], No. 7890/51. Class 19, An agitator tor a suction cleaner comprises a tubular body 1 having a longitudinal slot 6 in its wall extending from an open end, a brush guide 9 being secured to the inside of the body so as to form a pocket, between itself and the wall of the body 1, in which a brush 40 may be inserted longitudinally. The bristles 41 of the brush project through the slot, the outer surfaces 42 of the brush back abutting the inner surfaces of the wall of the body 1 on either edge of the slot. The brush is retained by a detachable closure member 19 which also comprises a housing 16 for a ball-race 27 whereby the agitator is rotatably mounted upon spindle 24. The assembly is held in place by a nut 31 threading upon the reduced end 26 of the spindle and is enclosed by a dished cover 34 attached to the nut; end-play is taken up by a spring washer 28 while lubricant is retained in the bearing by a felt sealing washer 29. In order to facilitate removal of the brush, the brush guide 9 does not extend to the edge of the body 1, the-outer end of the brush being supported by the member 19, which is provided with a cut-away portion 23 for this purpose. Specification 690,152 is referred to.
Patent GB-670652-A (GB)
Title: High frequency heating of metal surfaces
IPC: H05B6/42
Filed: 1949-03-23
Abstract: 670,652. Electromagnetic induction heating. BARFIELD, R. H., GIBBS, M. G.; and WILD - BARFIELD ELECTRIC FURNACES, Ltd, March 17. 1950 [March 23, 1949]. No. 7961/49. Class 39(iii). A loop for single line heating of a metal object comprises an active heating conductor 7 and an inactive return conductor 6, the conductor 6 being of much lower impedance than the conductor 7. This is ensured by making the return conductor 6 as a flat metal sheet as shown, or as a halfcylinder (see Fig. 1, not shown), whilst the heating conductor 7 is in wire, rod, bar, or tube form. The conductors 6 and 7 are joined together at one end 8 of the loop, and at the other end are secured to separate terminal plates 9, 10, respectively. The heater 7 may be hollow and led back along the top of the sheet 6 as at 11, and cooling fluid passed through it. If desired insulating sheets 14, 15 may extend between the edges of the sheet 6 and heater 7 to form a hollow box into which quenchant, e.g. water, may be led at 17. A slot 16 is left between the'heater 7 and one insulating sheet 14 to allow the water to flow out immediately after heating to quench the object heated. The object is passed below the heater 7 during heating. The outer end plate 10 may be cooled by means of tubes 18, the tube 11 being dispensed with.
Patent GB-609440-A (GB)
Title: Improvements in or relating to the manufacture of imitation astrachan furs
IPC: A41H41/00
Filed: 1946-03-14
Abstract: 609,440. Imitation astrachan. FINKELSTEINAS, J. March 14, 1946, No. 7971. Convention date, April 11, 1945. [Class 142 (iv)] Gibused chenille is formed into spaced loops 2, bound by a continuous thread 3 or by separate threads, and secured to a backing 4 to imitate astrachan.
Patent GB-1224449-A (GB)
Title: Washing and drying magnetisable material
Inventor: MARTENS JENS
IPC: B03C1/10
Filed: 1970-02-19
Abstract: 1,224,449. Magnetic separators. FARBENFABRIKEN BAYER A.G. 19 Feb., 1970 [19 Feb., 1969], No. 7974/70. Heading B2J. A process for washing and drying magnetisable material in a suspension comprises delivering the material 1 to a magnetic separator drum 4 where the solid material is removed in an upward direction and treating the material with a washing liquid from a nozzle 8, the solid material being stripped off the surface of the drum by a stripper 16. The washing liquid feed system 9 is provided with a heater 10. The drum is heated by passing steam through tubular coils 11. The material is dried by means of air which has been heated in a heater 14 and which is blown by means of an air supply system 15 through nozzles on to the solid material.
Patent GB-1499241-A (GB)
Title: Josephson junction circuit arrangements
IPC: H03K17/92
Filed: 1976-03-01
Abstract: 1499241 Superconductive circuits INTERNATIONAL BUSINESS MACHINES CORP 1 March 1976 [30 June 1975] 08009/76 Heading H3X Series connected logic gates 11 operating in either the latching or non-latching mode each comprise a Josephson junction 12, control lines 16, 17 and an output load 13, the transient voltage produced by gate operation or restoration being substantially isolated from the other gates by interposed and mismatching bi-stable regulator gates 18 each comprising a Josephson device. When a junction 12 of a logic gate is switched from its zero to its voltage state by control line current, the resulting transient voltage in the gate conductor 15 switches an adjacent regulator gate from the voltage to the zero state. The opposite effect is obtained when the junction 12 is reset to its zero voltage condition. With latching characteristics resetting of the logic gate is effected by reducing the gate current Ig, the regulator gate having been previously restored to its initial voltage state by a bias on control line 19. If the logic and regulator gates are non-latching they are restored at the same time to their initial states by interaction of transient voltages between them when the control line current ceases. Additional attenuation by appropriate selection of the gate conductor impedance between the gates may be provided, and is denoted in the figure by breaks 22. A conventional integrated construction of two Josephson junctions forming a combined logic and regulation unit is disclosed, Fig. 6 (not shown).
Patent GB-492048-A (GB)
Title: Improvements in or relating to sliding doors, windows or the like for showcases, shop fronts or for other purposes
IPC: E06B3/46
Filed: 1937-03-19
Abstract: 492,048. Sliding doors ; draught-excluders. MASON & SON, Ltd., W., and RAMSDEN, T. W. March 19, 1937, No. 8119. [Class 20 (iii)] Sliding doors, windows, and the like for show cases, shop fronts, and other purposes are supported on a flat plate by adjustable ball castors 3, 4, comprising a fixed three-sided casing 10 and a ball carrier 8 adjustable therein by a thumb-screw 11 axially fixed in the casing by a washer 13 secured to the screw. The doors are independently guided by pins 5 ... 7, the lower pin 6 being vertically movable on a bracket 25, Fig. 8, to allow the door to be removed from the frame. In the closed position the leading edges have tongue-and-groove engagement with a recessed central post 19, packing being provided on the door or on the post. The guides nearest to the leading edge pass through transverse grooves to allow the final closing movement. When applied to glass doors the edges of the doors are adapted when closed to engage a recessed central post having a velvet ribbon packing insert and the outer edges lie in recessed frame-members provided with tubular packing of rubber. The upper and lower horizontal edges engage draught and dust excluding strips 15, Fig. 2.