baber/WOPTO huggingface dataset:
Patent GB-1502685-A (GB)
Title: Image display apparatus
IPC: H03G3/20
Filed: 1975-04-17
Abstract: 1502685 Television systems AMERICAN OPTICAL CORP 17 April 1975 [24 April 1974] 15933/75 Heading H4F An input video signal is modified prior to display on a cathode-ray tube so as to provide a signal to the display which is biased according to one extreme value of the input video, e.g. blackest black, and which is adjusted automatically so that the other extreme value, e.g. whitest white, lies within a preset range of values. The embodiment shown in Fig. 2 includes a raster-scanned monitor c.r.t. 30, which displays the output of an electron microscope pick-up 22, and a further c.r.t. 30' on which the modified video signal is displayed to a photographic camera 36. The output of the pick-up 22, which may be a scintillation detector and photomultiplier, passes to the monitor 30 and to a unit 38 which determines the minimum value (i.e. the blackest black) to occur over a period of several video frames and stores this value. The operator adjusts the pick-up 22 gain as he wishes. Except during line and frame fly-back periods the pick-up output also passes to c.r.t. 30'. During fly-back however, switch 44 passes the stored blackest black value from unit 38 to D.C. restorer capacitor 49' which charges to a corresponding value, switch 48' connecting the capacitor to earth. The capacitor biases the video signal during trace periods to provide an earthbased black level signal. The maximum value (i.e. the whitest white) in the biased signal is maintained within limits, which are manually set at contrast control 70, by comparing (52, 54) them with the instantaneous value of the signal. Brief excursions outside the limits have no effect, as they are filtered out by noise filters 60, 62, but longer-lasting excursions cause monostables 56, 58 to increase or decrease the output of integrator 64, thereby increasing or decreasing the gain of amplifier 46 in the path of the signal to c.r.t. 30'.
Patent GB-862653-A (GB)
Title: Press-free crease retained garments and method of manufacture thereof
Inventor: WARNOCK WILLIAM KIRKPATRICK
IPC: D06M23/14
Filed: 1957-05-20
Abstract: Washable press-free garments, possessing crease retention properties, despite numerous washings, are produced by impregnating the fabric of which the garments are made with an aqueous solution of one or more water-soluble thermosetting resins, extracting excess solution from the fabric to retain approximately 70-80% by weight of resin solution based on the weight of fabric, drying the fabric at a temperature insufficient to polymerize the contained resin, manufacturing at least one ready-to-wear garment from the fabric, pressing at least one crease in the garment and then baking the garment to polymerize and set the contained resin to a water-insoluble state.  The thermosetting resin, which may be a urea-formaldehyde resin, may contain a softener and a deodorant.  After impregnation the fabric may be dried at approximately 200 DEG F. and may be mechanically finished by calendering, the rolls of the calender being heated to approximately 250-300 DEG F.  After creasing the garments the resin may be cured by baking at 350-450 DEG F.  Cotton blouses, shorts, jackets, dresses and slacks may be made by the process.
Patent GB-691300-A (GB)
Title: Improvements in and relating to the separation of nickel and other metals from cobalt-containing solutions
IPC: C25C1/08
Filed: 1949-06-16
Abstract: 691,300. Electrolytic separation of nickel and other metals from solutions. MERRE, M. DE. May 15, 1950 [June 16, 1949], No. 16051/49. Class 41. A process for separating nickel from cobalt in a solution of these metals, is characterised in that the solution is rendered acid, and is subjected to electrolysis at a temperature between approximately 50‹ C. and boiling point, with a mercury cathode, the ratio of nickel to cobalt in the solution diminishing as electrolysis proceeds so that eventually substantially all the nickel is deposited on to the mercury cathode to form an amalgam, which is separated from the solution containing the cobalt. If other metals are present in the solution such as copper, cadmium and zinc, which are separable at cathodic potentials lower than the potential at which cobalt precipitates, they may be deposited on the mercury cathode using an appropriate cathode potential for such metal. The surface of the cathode may be increased by means of rotating discs partly immersed in the mercury. Metals may be extracted selectively from the mercury amalgam by electrolysis, the amalgam being the anode, and controlled anodic potential being applied appropriate to each metal. The electrolyte may be normal sulphuric acid solution at a temperature above 75‹ C.
Patent GB-245012-A (GB)
Title: Improvements in a container for matches, toothpicks and kindred articles
IPC: A24F27/12
Filed: 1925-06-22
Abstract: 245,012. Sakowski, H. K. June 22, 1925. Cartons made from special blanks and specially designed for matches.-A container for matches, toothpicks, &c. is formed from a single strip of cardboard or the like, the strip being folded to form a pocket and having integral therewith tongues 6 for retaining articles in position within the pocket. An extension flap 1 serves as a reinforcement for the cover 2 of the pocket, the flap 1 being secured to the cover 2 only at the portion adjacent its hinging line 2<1>. The cover 2 is held closed by a tongue 9 stamped up from the material of the pocket, and when the container is used for matches, an igniting-strip may be secured to the outer face of the cover 2.
Patent GB-981490-A (GB)
Title: Rotary compressor
IPC: F04C18/344
Filed: 1962-04-27
Abstract: 981,490. Rotary compressors. WORTHINGTON CORPORATION. April 27, 1962 [Sept. 27, 1961], No. 16133/62. Heading F1F. ' A two-stage rotary compressor 20, 30 (Fig. 1) for a refrigerating system is mounted in a hermetically sealed housing 2 and driven by an electric motor in a housing 3. Each stage of the compressor comprises a rotor 40, 40<SP>1</SP> (Fig. 2) with outwardly sliding vanes and a casing having two inlets and two outlets, the outlets 23, 26 of the first stage being axially aligned with the inlets 35, 33 of the second stage. The compressor is lubricated by oil forced through passages 70, 71, 72, 74, 73 to nozzles 76 in the casing inner walls (see also Fig. 6). The profile of the inner wall of the casing (Fig. 11) which is symmetrical about the major and minor axes comprises, on each side of the major axis, an arc 81 centred on the rotor axis and subtending between 10 degrees and 20 degrees at the axis, bounded by arcs 82 of radius R T , subtending between 12 degrees and 30 degrees at the rotor axis. The profile is completed by circular or elliptical arcs 83.
Patent GB-1158186-A (GB)
Title: Purification of Formaldehyde
IPC: C07C45/82
Filed: 1967-04-10
Abstract: 1,158,186. Formaldehyde. E. I. DU PONT DE NEMOURS & CO. 10 April, 1967 [11 April, 1966], No. 16232/67. Heading C2C. Purified formaldehyde is obtained from a mixture comprising (a) formaldehyde, (b) water, (c) an alcohol having a normal boiling point of at least 95‹ C. and being free of any substituent groups, other than hydroxy, which react with formaldehyde under the process conditions, and (d) the hemiformal of said alcohol and formaldehyde, by adding 10-10,000 p.p.m. by wt. of at least one alkali metal salt of an organic acid to said mixture, vacuum dehydrating the mixture, pyrolysing the dehydrated mixture and separating the formaldehyde. Preferred salts are K and Li formate. A borate ion added, e.g. as an alkali metal borate, may also be included in the mixture. The preferred alcohols boil above 120‹ C. and may contain ether, chloro and cyano groups. Dehydration may be effected at 60-90‹ C. under 20-40 mm. Hg absolute. Pyrolysis is usually effected at atmospheric pressure at 125-160‹ C. In examples cyclohexanol and 2-ethylhexanol are used as the alcohols.
Patent GB-120427-A (GB)
Title: Improvements in Fire-extinguishing Apparatus.
Inventor: HORTON SPENCER
IPC: A62C37/12
Filed: 1917-11-07
Abstract: 120,427. Horton, S. Nov. 7, 1917. Sprinklers, automatic.-In an automatic sprinkler system, the supply of liquid to the sprinkler heads is controlled by means of a valve h bearing against a flexible diaphragm c held closed by a fusible connexion engaging a stem projecting therefrom. Fig. 1 shows a form in which the valve h is mounted in a casing a having two or more outlets and is held closed by means of the levers k, l retained in position by means of a cap m secured by an easily fusible solder. The cap m is provided with a slot covered by a strip o hooked at p and soldered to the cover at q. In the form shown in Fig. 4, the levers are replaced by a spring between the valve and the cover m, and, in a further modification, the valve bears directly on the cap. The exits of the tubes to the sprinkler heads are closed by means of wood, card, &c. t, Fig. 1, to prevent access of vapour when the valve is closed.
Patent GB-991084-A (GB)
Title: An improved dispensing device
Inventor: GONNELLA CARMEN JOSEPH
IPC: B43M11/02
Filed: 1963-04-25
Abstract: 991,084. Roller applicators. REXALL DRUG & CHEMICAL CO., and MENNEN CO. April 25, 1963, No. 16398/63. Heading A4K. [Also in Division A5] A cream or liquid dispenser comprises an ellipsoidal roller 13 freely rotatable in a socket about its longest axis, the socket having a mouth through which a portion of the roller extends and an inlet passage for liquid from a reservoir 10a, the roller having limited freedom of movement between a position in which it occludes the passage and a position in which liquid can flow from the passage into the socket. A sealing ring 14 of rubber or resilient plastic is located in the inlet passage and the socket overlies sufficient of the roller to maintain it in the socket. A socket extension which defines the inlet passage detachably fits an opening in the reservoir, when the device is not in use, a cap 11 presses the roller against the sealing ring to occlude the passage. When the cap is removed, resilient projections (12b not shown) in the socket push the ball away from the sealing ring to open the passage.
Patent GB-312916-A (GB)
Title: Improvements in processes for the synthesis of hydrocarbon fuels, and for the cracking and hydrogenation of heavy hydrocarbons
IPC: C07C1/02
Filed: 1929-05-28
Abstract: 312,916. Mercier, J. June 2, 1028, [Convention date]. Drawings to Specification. Hydrocarbons.-Light hydrocarbons are produced by heating a mixture of vapours of heavy hydrocarbons with carbon monoxide and hydrogen, the heavy hydrocarbons being either manufactured in the process or fresh or a mixture of both, in the presence of a catalyst such as metals of the iron group (iron, nickel, or cobalt in grains or powder on refractory carriers such as alumina, lime, magnesia) or sulphides such as sulphide of iron, molybdenum, or tungsten, at a temperature of about 500‹ C., and then subjecting the gases to a simultaneous expansion and rapid cooling to a temperature between 180‹ and 300‹ C., again in the presence of catalysts such as finely divided metals. Steam may be added to the initial gas mixture, whereby nascent hydrogen is produced. The product obtained is separated into heavy and light hydrocarbons, and the separated heavy hydrocarbons are heated together with a fresh mixture of carbon monoxide and hydrogen, or fresh oil may be vaporized and added to the carbon monoxide-hydrogen mixture. The permanent gases remaining after the reaction may be allowed to react in the presence of steam on the residue left behind by the cracking, after separation of the heavy and light hydrocarbons, whereby hydrogen and carbon monoxide are formed, and these are mixed with the vapours of the fresh oil supplied. Hydrogen or steam may be mixed with the mixture under treatment during the expansion and cooling step, or a further addition of carbon monoxide and hydrogen may be made to the gaseous mixture directly after the heating step. The Specification as open to inspection under Sect. 91 (3) (a) also describes the manufacture of light hydrocarbons from a mixture of carbon monoxide and hydrogen in the presence of the catalysts specified above. This subject-matter does not appear in the Specification as accepted.
Patent GB-181969-A (GB)
Title: Improvements in or relating to two-stroke cycle internal combustion engines
IPC: F01L5/06
Filed: 1921-06-15
Abstract: 181,969. Deacon, R. W. June 15, 1921. Two-stroke-cycle engines.-A piston having an extension F containing inlet and exhaust ports is formed with a wedge-shaped head x for directing an incoming charge towards the exhaust ports B. The engine shown in the Fig. 1 compresses p u m p clarges in its crank chamber.
Patent GB-379762-A (GB)
Title: Improvements relating to the production of sliding clasp fastener strips
IPC: B21D53/50
Filed: 1931-06-05
Abstract: 379,762. Sliding-clasp fasteners. FUCHS, F., 44, Seckbacherlandstrasse, Frankfort-on-Main, Germany. June 5, 1931, No. 16540. [Class 44.] For making the strip members of sliding- clasp fasteners, the fastener elements 13, Figs. 2 and 3, after stamping from a metal strip 8, Figs. 1 and 2, collect in a magazine 12 or channel below the die, and from this they are fed singly with their arms foremost by means of a reciprocating slide 14 into the gaps between pairs of oppositely-disposed teeth of toothed wheels 90, as shown in Fig. 3. The arms of the elements embrace the beaded edge of a cloth strip 6, Fig. 1, guided between the pair of toothed wheels 20 as by means of a pair of wheels 24, Fig. 2, arranged parallel to the wheels 20, both pairs of wheels being moved forward step by step in unison by engaging toothed wheels 25, Fig. 2. Rotation of the wheels 20, 24, 25 carries the elements and the strip into the nip of the wheels, with the result that the arms of the elements abut against the roots of the teeth of the wheels 20 and are thereby pressed into the strip ; and it is preferred that the roots of the teeth should be rounded so that at the same time the burred edges produced during the punching of the elements are removed. In the machine shown, the metal strip 8, Fig. 1, is drawn through by a pair of rolls 9 geared to the main shaft 2, the crosshead 3 carrying the punch 5 is actuated from this shaft, and the reciprocating slide 14 and the gear wheels 25 are actuated from the crosshead, the former by rack-and-pinion gearing 16, 17, 18, and the latter by means of a lever 29 connected to member 32 carrying a pawl the ratchet wheel of which is on the shaft 28 of one of the gear wheels 25. In order to provide at intervals, gaps in the row of fastener elements secured to the cloth strip, the wheels 25 are provided with an alternative drive under the control of a cam 35 carried by a chain 34 driven from the shaft 28. The cam 35 lifts a lever 39 which by means of a bell-crank lever 44 actuates the member 40, Fig. 5, of a clutch, the member 41 of which is permanently geared to the main shaft 2 ; the pair of rolls feeding forward the cloth strip are then driven at a more rapid rate through the gears 50, 50a, 56, 25, so that for the necessary length no fastener elements are attached to the strip ; subsequently the clutch is opened by engagement of the part 52 carried by the rotating element 43 with the part 53 of the non-rotating element 42, axial movement of which opens the clutch 40, 41. The machine then reverts to normal operation. In an alternative system, the cam 35, Fig. 6, closes contacts 69 so energizing an electromagnet 57, the armature of which is connected to ratchet gearing 60, 61 ; in normal operation of the machine, the shaft 28 is actuated through ratchet gearing 27, 33 by a cam 68 suitably driven from the main shaft of the machine, but to produce the desired gaps in the row of fastener elements, the shaft 28 is driven at an increased speed by the ratchet gearing 60, 61 and spur gearing 65, 66.
Patent GB-388825-A (GB)
Title: An improved mechanically relayed movement for telegraph and like signalling mechanism
IPC: H04L17/06
Filed: 1931-09-03
Abstract: 388,825. Type-printing telegraphy. CREED & CO., Ltd. and GRIFFITH, R. G., Telegraph Works, Croydon. Sept. 3, 1931, No. 16569/32. Divided on 388,785. Drawings to Specification. [Class 40 (iii).] The subject-matter is contained in Specification 388,785, but the claims relate to a mechanically relayed movement, for telegraph or like signalling mechanism, in which a longitudinallymovable member, operated to one or the other of two positions, is invariably actuated laterally by a rotating cam and selectively engages a controlled member in accordance with the position to which the longitudinally-operated member has been moved. In the arrangement described there are two longitudinally-movable members simultaneously moved laterally, and the controlled member is moved in one of two directions in accordance with the setting of a member controlling the longitudinally-movable members.
Patent GB-1046915-A (GB)
Title: Monolithic structural building element
IPC: E04B1/84
Filed: 1965-04-22
Abstract: 1,046,915. Building elements. INTERNATIONELLA SIPOREX A.B. April 22, 1965 [April 23, 1964], No. 16923/65. Heading E1V. A structural building element 10 of cellular artificial stone, e.g. concrete comprises a surface formed with a plurality of shallow recesses 13 which are at least almost filled with a soft, porous filling 14 to increase the acoustic absorption coefficient of the surface. The recesses may be in the form of circular recesses or holes or elongated grooves and may be of the same or different dimensions. The walls of the recesses may be slightly undercut. The recesses may be cut, e.g. by milling or sawing so that the walls thereof present open pore cavities. The porous filling may comprise open pore soft foamed plastic, felted mineral wool, or asbestos fibre plait or twine. The elements 10 are reinforced at 11 and recessed at 33 to form jointing channels for concrete mix 32 so that they may be used for constructing floors or roofs. The elements may also be used for walls.
Patent GB-1487585-A (GB)
Title: Lamp switch circuit
IPC: G03G15/04
Filed: 1974-11-12
Abstract: 1487585 Control systems for gas discharge lamps XEROX CORP 12 Nov 1974 [19 Nov 1973] 16926/77 Divided out of 1487584 Heading H2H The description is identical with that of Specification 1,487,584, but the claims are directed to the switch circuit, both alone and in combination with the lamp control circuit which is claimed in that Specification.
Patent GB-548381-A (GB)
Title: Improvements in and relating to the refining and casting of magnesium and alloys rich in magnesium
IPC: B22D7/00
Filed: 1940-11-26
Abstract: 548.381. Magnesium; alloys. PYLE. P. R. C. and SHEPPARD, N. C. Nov. 26, 1940, No. 16948. [Class 82 (i)] A process of casting magnesium and its alloys comprises refining the molten metal by means of a first flux, casting- it into ingots, remelting it with a second flux, and casting in moulds. The first flux is made by dissolving magnesium or its alloys or magnesium carbonate in excess of strong hydrochloric acid, adding sufficient saturated solution of an alkali chloride to provide about 20 per cent. of the alkali chloride to the weight of anhydrous magnesium chloride, evaporating to dryness in a vessel having a restricted outlet, igniting to expel free and combined water and adding dry alkali chloride to give a mixture of about egui-molecular proportions of alkali chloride and magnesium chloride. The second flux is made by dissolving magnesium or its alloys or magnesium carbonate in excess of strong hydrochloric acid, evaporating to dryness either in a vessel having a restricted outlet or in the presence of sufficient saturated solution of an alkali chloride to provide 20 per cent. of the alkali chloride to the weight of anhydrous magnesium chloride, and adding alkali chloride and magnesium fluoride to give a mixture of 45 per cent. magnesium chloride, 37 per cent. of alkali chloride, and 18 per cent. of magnesium fluoride. Other materials such as -calcium fluoride or magnesium oxide may be used as equivalents of all or part of the magnesium fluoride.
Patent GB-497358-A (GB)
Title: Improvements in and relating to closures for sprinkler top cartons, tins and the like
IPC: B65D83/06
Filed: 1937-06-18
Abstract: 497,358. Closures for sprinkler-top cartons &c. CO-OPERATIVE WHOLESALE SOCIETY, Ltd., and GOODWIN, A. H. June 18, 1937, No. 16949. [Class 125 (iii)] A closure for a sprinkler-top carton of the kind comprising a perforated lid or end c and a cardboard disc d removable by a tape, wire or like strip is arranged as described in Specification 479,085, and the tape a is doubled to form a loop and is placed with its ends between the disc d and the perforated end c. The wall e of the recess is pressed down on to the disc to hold it and the tape in position. A notch or gap may be formed in the edge of the disc d or in the wall of the recess to accommodate the tape a.
Patent GB-1423565-A (GB)
Title: Device for determining in a signal the presence of a given frequency
IPC: H03D3/04
Filed: 1973-04-09
Abstract: 1423565 Frequency recognition ELECTRONIQUE MARCEL DASSAULT 9 April 1973 [11 April 1972] 16990/73 Heading G4H [Also in Division H4] A signalling frequency detector comprises a clipping circuit 11 for squaring an incoming signal, a logic 14 for combining the clipped signal with a reference square wave having the frequency F 0  to-be-detected, and a clocked counter 18 which counts a clock pulse train up or down in dependence on the binary value 1 or 0 occurring at the output of the logic, the value of the count or the rate of counting indicating whether or not the incoming signal contains the signalling frequency or closely adjacent frequencies. In the Figure, the two limbs 151, 15<SP>2</SP> correspond to reference signals of same frequency but opposite phase, logic 14 is EXCLUSIVE OR, and the absolute values of count in the two counters are additively combined so as to trigger a threaded circuit 28 and hence an indicator at a rate dependent on the closeness of the input frequency to the reference frequency, the rate being greatest when the two frequencies coincide. The frequency bandwidth of the circuit is related to the threshold level in device 29 and the clock rate of the stepping pulses 23<SP>1</SP> applied to the counter 18, this preferably being about 10F 0 . Frequencies up to 1 MHz may be detected. Integrated circuitry is utilized.
Patent GB-542717-A (GB)
Title: Improvements in or relating to travelling chain vehicles
IPC: B62D55/10
Filed: 1940-11-28
Abstract: 542,717. Endless track vehicles. SEILER, K. Nov. 28, 1940, No. 17017. Convention date, Sept. 30, 1939. [Class 79 (i)] The side walls 1, 2 of the track frames of an endless track vehicle are secured together at their upper parts by hollow stay bolts 3, and are provided, adjacent the guideways 8, 9 for the track rollers 10, with openings 12, 13, 14 having closure members, the openings 13 being spaced correspondingly with the interval between the track rollers so that a number can be lubricated at one setting of the track. The lower inner cover plate 4 between the side walls 1, 2 is provided with movable flaps 16 for inspection of the track. The opening 14 is closed by a plate 15 provided with sections of the guideways 8, 9, so that when this plate is removed links of the track can be removed and inserted and the track itself can be inserted through the opening. The stay bolts 5 are sufficiently far apart to permit dirt &c. to fall through. A seat 19 or other structure may be readily mounted by means of the stay bolts. In the case of a seat its supports 18 are slotted at the ends to pass over bolts 17 passed through the hollow stay bolts as shown. The side walls 1, 2 are further secured together by tubes 5 through which pass tubes 6 connecting together the two track frames.