baber/WOPTO huggingface dataset:
Patent GB-1395660-A (GB)
Title: Gas analyser
IPC: G01N21/05
Filed: 1972-09-18
Abstract: 1395660 Gas analyser PERKIN-ELMER CORP 18 Sept 1972 [20 Sept 1971] 43203/72 Heading G1A In a device employing a capacitance microphone 25, for analysing a gas mixture such as an exhaust gas, infrared radiation from a source 15 passes via a chopper 18 and a narrow band pass filter 20 into a sample cell 10, whose internal thickness is  between 0.1 mm and 4 mm, and through which the gas flows whereby pressure variations (due to some of the radiation wavelengths being absorbed by a gas present having an absorption band coinciding with the radiation passed by the filter) cause the capacitances of compartments 26 and 27 of the capacitance microphone 25 to vary in proportion to the amount of the radiation absorbing gas present. The cell 10 has a transparent window on one side 10 and a wall with a reflective coating on the other side. The capillary passages 32A, 32B, 34 and 35, 40 and 39, 45a and 45b are dimensioned so that the gas flow (see arrows) is controlled so that temperature and pressure changes due to radiation absorption reach a substantially steady state during that portion of one cycle of the chopper 18 during which the radiation passes into the cell. The pressures of the compartments 26 and 27 are kept substantially equal over longer periods by a capillary bore 38. The capacitance microphone comprises a flexible electrically conductive membrane 29 connected to an oscillator, Fig.2 (not shown) and two plates 30, 31. The changes in capacitance between 28 and 30 and 28 and 31 are fed via summing amplifier connected to a synchronous demodulator which is also supplied by the oscillator, the output of the synchronous demodulator being supplied to a further demodulator also supplied by signals from the chopper motor for smoothing and amplifying the output signal before it is supplied to a meter.
Patent GB-1488714-A (GB)
Title: Locks
IPC: B60R25/021
Filed: 1975-11-08
Abstract: 1488714 Locks L & F WILLENHALL Ltd 8 Oct 1975 [8 Oct 1974] 43589/74 Heading E2A  A lock is protected against destructive drilling or the use of a self-tapping tool by provision of an element 24, preferably U- shaped, on the key-receiving member 14 between the end-face and the tumblers 20. This element is formed from a material harder than the material forming the keyreceiving member, preferably from hardened steel. The element 24 is held in slot 26 so that it cannot move away from the centreline of the key-slot, part of the boundary of which it may form. The use of the element is described in a barrel lock for the steering column of motor vehicles.
Patent GB-1466509-A (GB)
Title: Autotab machine
IPC: H01R43/20
Filed: 1975-10-23
Abstract: 1466509 Inserting terminals in printed circuit boards GENERAL STAPLE CO Inc 23 Oct 1975 [30 Oct 1974] 43652/75 Heading B3A Apparatus for inserting electrical terminals into a printed circuit board W includes a feed assembly for intermittently feeding a strip of integrally connected preformed terminals 4, Fig. 2, between a pair of upright plates 142, 144, Fig. 1, the plates serving to grasp a terminal as it is sheared from the strip and then inserted downwardly into the board W The strip is fed by a reciprocating block 106, Fig. 2, which incorporates a spring-loaded pawl which engages the slots between adjacent terminals. The plates are urged together, to grip a terminal by a horizontally reciprocable slide 94 operated by a cam drive. Initial movement of the plates grips the terminal, and further movement forces the strip against a cutting edge on the adjacent housing to shear the terminal from the strip. While still gripped by the plates, the terminal (and plates) are moved downwardly by a vertically reciprocable slide 60, to insert the terminal in the board W. A vertical, spring-loaded pin 62 locates the board in place.
Patent GB-1246447-A (GB)
Title: Improvements in or relating to the manufacture of oxide-coated electrodes for use in electrolytic processes
Inventor: HAYFIELD PETER CHARLES STEELE
IPC: C25B11/10
Filed: 1967-09-26
Abstract: 1,246,447. Coating with titania. IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd. 16 Sept., 1968 [26 Sept., 1967], No. 43678/67. Heading C1N. [Also in Division C7] An oxide-coated electrode for use in electrolytic processes (such as the chlor alkali electrolysis of brine or the production of chlorate, chlorite or hypochlorite) is made by taking an electrically conductive base of which at least the surface is formed of either a film forming metal selected from Ti, Ta, Nb and Zr or a film forming alloy based upon one of these metals, treating the base with an acid containing ions of the film-forming metal, adding to the acid a source of ions of at least one metal other than the film-forming metal or any of the alloy constituents and precipitating upon the base a mixture of oxides of said film-forming metal and of said at least one other metal. The base may comprise a conductive core, e.g. of Cu, which is coated with the film-forming metal or alloy. A suitable alloy is Ti-0À15 weight per cent Pd. An electrode of Ti coated with oxides of Ti and Fe may be made by treating Ti in boiling H 2 SO 4  to produce Ti ions, adding FeCl 3  to the acid and precipitating the oxides from the acid on to the Ti either by applying a current with the Ti as anode or by oxidizing the Ti and Fe ions with (i) KClO 3 , (ii) Pd added as a soluble salt or (iii) air bubbled through the acid.
Patent GB-1109268-A (GB)
Title: An electrical circuit for transferring an amplitude modulation from one time position in a time division multiplex cycle to another time position in a time division multiplex cycle
Inventor: GEORGE ROGER GEOFFREY
IPC: H04Q11/04
Filed: 1966-09-30
Abstract: 1,109,268. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. 30 Sept., 1966, No. 43831/66. Headings H3T and H4K. An " audio-link " circuit for interconnecting two subscribers who are allocated permanently or temporarily different time slots in the same or different time multiplex cycles, includes a capacitor whose voltage is successively adjusted to the amplitude of each speech amplitude modulated pulse of one time slot and is successively sampled via a high-impedance amplifier during the other time slot. A separate " audiolink " circuit is provided for the go and return channels of a connection. In one arrangement (Fig. 1) an amplitude modulated pulse of one time slot is gated into the circuit via a crosspoint switch VT1, inverted by VT2 and results in a current flow through resistor R2 proportional to its amplitude. Transistors VT3 and VT4 conduct with VT4 bottoming. The voltage on capacitor C1 now assumes that on the base of transistor VT3, and hence is proportional to the amplitude of the pulse, either by charging via diode D1 or discharging via diode D2 until held by D1 depending upon the amplitude of the previous pulse. At the end of the pulse transistors VT1, VT3 and VT4 cease to conduct leaving the voltage on capacitor C1 to be sampled at the other time slot by or the output gate via a high impedance amplifier formed by a Darlington pair of transistors as shown or a field effect transistor. In another arrangement (Fig. 2) the capacitor C10 is charged or discharged to the level of the incoming pulse of the one time slot in response to a pulse at X.
Patent GB-1123204-A (GB)
Title: Improvements in or relating to the production of mono-and dinitrohydrocarbons
IPC: C07C205/06
Filed: 1965-10-15
Abstract: The invention relates to an apparatus for two-stage nitration of aromatic hydrocarbons with a plurality of nitration vessels, a discharge container for each starting material for each degree of conversion of the nitration mixture, and a washing device, wherein the two stages are adapted for parallel operation when the apparatus is used to produce a mononitro-compound and for series operation when it is used to produce a dinitro-compound.  The stated purpose of the invention is to permit (a) an interchange between mono- and di-nitration processes, and (b) the use of the total capacity of the apparatus when used in a mononitration process.  The nitration of toluene is exemplified, but the apparatus may also be used for the nitration of, e.g., xylene or chlorobenzene.
Patent GB-1146755-A (GB)
Title: Dry-air ejecting device for hair-dressing use
IPC: A45D20/00
Filed: 1966-09-30
Abstract: 1,146,755. Hair treating device. T. KAGIYAMA. 30 Sept., 1966 [5 Oct., 1965], No. 43931/66. Heading A4V. [Also in Division A5] A dry-air ejecting device for hair dressing use comprises an elongate rigid tubular ejecting element which is (1) curved to conform generally with the shape of a scalp, (2) tapered from an open end (adapted to be connected to a source of dry air) towards a closed end and (3) provided with a plurality of apertures arranged so as to direct the dry air away from the scalp when the device is operatively in use, the device further comprising a clip member pivotally mounted on the element towards its open end to hold the element in the desired operative position. In Fig. 1, ejecting element 1, provided with apertures 2, has a flexible tube 4 connected to its open end. Tube 4 is inserted into a flexible hose 11, through which heated air is supplied. Resilient clip member 9 is mounted by a pivot 8 on element 1 and has a manually operable rearward extension 10 so that, in use, a part of the hair may be clamped between clip member 9 and element 1.
Patent GB-1066863-A (GB)
Title: Improvements in or relating to push-type centrifuges
IPC: B04B15/08
Filed: 1963-11-11
Abstract: 1,066,863. Push-type Centrifugal strainers. ESCHER WYSS A.G. Nov. 11, 1963 [Nov. 14, 1962], No. 44453/63. Heading B1D. A liquid-solid mixture being separated in centrifugal strainer drum 3 is maintained at constant temperature by a duct 14 which returns ventilation gas issuing into liquid collection chamber 5 to the interior of drum 3, the centrifuging chamber 2 being gas-tight, and means 15 maintaining gas temperature. Mixture enters drum 3 by feed pipe 6, liquid collects in chamber 5, solids are expelled from drum 3 into chamber 4 by the reciprocating plunger. Motor-controlled valves 9, 10 and the outlet from chamber 5 being immersed in liquid (Fig. 1, not shown) keep chamber 2 gas-tight. A fan 19 blows air through duct 14 past heat exchanger 15, which may heat or cool the air, temperature being controlled by a sensing device 16 which monitors either the air leaving drum 3 or alternatively the separated liquid, and controls a valve admitting heating or cooling agent to the heat exchanger. Chamber 2 and duct 14 may be insulated. Deflecting plates 26 prevent liquid entering duct 14, which includes a liquid separator 20 with discharge 21, and a feed 22 for washing liquid which flushes out separator 20.
Patent GB-1038713-A (GB)
Title: Improvements relating to multiple position rotary switches
Inventor: ELLIOTT KENNETH FREDERICK
IPC: H01H67/06
Filed: 1962-11-23
Abstract: 1,038,713. Magnetic switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 30, 1963 [Nov. 23, 1963], No. 44454/62. Heading H2B. A multiple position rotary switch comprises a permanent magnet 14 mounted on a shaft 9 to actuate at least one of a plurality of circularly arranged sealed magnetic reed contact units 1 in each of its positions. The magnet may actuate more than one such circumferential arrangement or a plurality of such arrangements may be actuated by a plurality of magnets mounted on a single shaft. Soft iron members 15 prevent undesirable actuation of contact units by stray flux from the magnet. The shaft may be rotated manually or electromagnetically through a ratchet and pawl arrangement (Figs. 3 and 4, not shown).
Patent GB-1031135-A (GB)
Title: Photographic camera
IPC: G03B7/083
Filed: 1964-11-03
Abstract: 1,031,135. Electrical control of shutter speeds. COMPUR-WERK G.m.b.H. Nov. 3,1964 [Nov. 19,1963], No. 44672/64. Heading G2A. In a camera in which the exposure time is determined by a circuit including a battery, a magnetic winding, and an RC arrangement, a changeover switch in the battery circuit connects a photoresistance either with an exposure meter or with the RC arrangement. The shutter, Fig. 1 and (not shown) Fig. 2, comprises a number of blades 20 pivoted at 22, and is set by moving an arm 24a of a blade-driving ring 24 against a spring 26, during which the lens aperture remains closed by masking blades. Ring 24 is held in the set position by the trip 28 which latches behind a nose 24b on ring 24. A diaphragm 40 is controlled from a setting ring 42. Ring 42 is coupled to a film sensitivity setting ring 46, but can be uncoupled by a member 46b. Ring 46 has an inner toothed segment engaging a pinion 48 which controls a diaphragm 54 in front of a photo-sensitive element 56. Thus the light reaching this element is restricted in accordance with "aperture" and "film sensitivity" factors as set by rings 42 and 46. The shutter is released by trip 28, the blades then being held in the open position by the armature 38a of an electromagnet 38 until the electromagnet is energized to release the blade ring and allow the shutter to close. Fig. 3 (not shown) is an arrangement of transistors 81- 84, resistances 85-91 and capacitors 92-94 connected up as an RC circuit. When the circuit is triggered, capacitor 94, which has been charged up by the battery 66, discharges through the winding of magnet 38, so allowing the shutter to close. A ring 60 sets the camera for daylight or flash operation. When a daylight photograph is required, the battery is in circuit, via switches 76 and 78, with the photo-resistance 56 and an indicating meter 58. When the trip 28 is operated, it changes over switch 78 to disconnect photo-resistance 56 from the meter 68 and connect it into the RC circuit. At the same time the driving ring 24 rocks a lever 30 to change over the double switch 95, 96 into the dotted line position so that condenser 92 is charged, which charge increases until it triggers the circuit and actuates magnet 38, so closing the shutter. Ring 24 returns to its rest position, and switches 95, 96 revert to their open circuit position. When a flash photograph is required, ring 60 is set accordingly, the setting movement causing change-over of switch 76 to connect a fixed resistance 74 into the circuit instead of photo-resistance 56. This gives a fixed exposure period for the exposure, the remainder of the switching circuit acting as for daylight photographs.
Patent GB-1394637-A (GB)
Title: Electrodeposition of zinc
IPC: C25D3/22
Filed: 1973-09-24
Abstract: 1394637 Additives for bright zinc electroplating baths M & T CHEMICALS Inc 24 Sept 1973 [26 Sept 1972] 44715/73 Heading C7B A bright zinc electro-deposit is produced from an aqueous bath containing (1) at least one zinc ion yielding compound, (2) at least one bathsoluble surfactant selected from substituted or unsubstituted polyethers or non-aromatic heterocyclic nitrogen compounds and (3) at least one aromatic non-carbonyl heterocyclic nitrogen compound. Component (2) may be a polyalkoxylated alkyl phenol, a quarternary imidazolinium compound, polyvinyl pyrrolidone or a polyethylene- or polypropylene glycol which may carry C(5-25) alkyl end groups. Component (3) may be pyridine, quinoline, izoquinoline or acridine or a derivative thereof. General formulae for and long lists of components (2) and (3) are given. Concentrations of 1-25 g/l and 0.001-4 g/l respectively of these components may be used in a weight ratio of 100-1 to 0.5-1. Plating conditions may include a bath temperature of 10-60‹C, a c.d. of 0.5- 5A/dm<SP>2</SP>, a pH of 1-10, a plating time of 0.5-120 min and a plating thickness of 0.25-25 microns Barrel plating may be used. The plated substrate may be steel, Fe, Cu, brass, bronze, Ni or Ag and may be a thin coating on a non-conductive substrate. Specified baths contain (1) ZnSo 4  or ZnCl 2  and NH 4 Cl optionally with citric acid and NH 4 OH as buffer or (2) Zn and NH 4  sulphamates and NH 4 OH buffer, in addition to the components (2) and (3) above. The plated zinc may be chromated by conversion coating.
Patent GB-986441-A (GB)
Title: Parking device
IPC: E04H6/14
Filed: 1962-11-29
Abstract: 986,441. Mechanical garages; endless conveyers. A. WULLSCHLEGER. Nov. 29, 1962 [Dec. 22, 1961], No. 45166/62. Headings B8A and B8E. A paternoster lift type of mechanical garage employs only one endless chain or cable to carry the vehicle platforms, the platforms being fitted with rollers which run in guides whose reaction on these rollers (and hence on the platforms) is normal to the plane of the chain or cable. Pivot-pins of the endless chain 1 carry rollers 10 which run in chain guides 17, 18 and the same pivot-pins carry struts 13, 14 which meet in pairs at support elements 15 from which the platforms 28 are suspended by further struts 26, 27. The support elements 15 carry rollers 34 which run in a guide 35 and the platforms carry rollers 32 which run in a guide 33. The guides 33 and 35 are in planes parallel to but on opposite sides of the plane of chain 1, and their reactions on the rollers 34 are therefore in opposite directions normal to the plane of the chain. The tendency of these reactions, which are not aligned, to rotate the platform about a vertical axis is counteracted by the reactions on supplementary rollers (not shown) associated with, but mounted on horizontal axles perpendicular to, the rollers 32, 34. Likewise the tendency of the suspended platforms to turn about a horizontal axis may be counteracted by suitable offsetting of the centre of platforms from their suspension members 15 thereby producing a vertical couple counterbalancing the couple due to the difference in level between the rollers 32 and 34. In Fig. 1, each platform 28 lies between the planes of the chain 1 and the guide 33. Figs. 3 to 5 (not shown) depict arrangements in which each such platform is associated with a further platform on the opposite side of plane of the chain. One or both of each such pair of platforms may be of sufficient dimensions to accommodate more than one vehicle. Specification 894,869 is referred to.
Patent GB-1247079-A (GB)
Title: Vinyl ester resin composition and method for producing solid articles
Inventor: NAJVAR DANIEL JOSEPH
IPC: C08F2/00
Filed: 1969-09-16
Abstract: 1,247,079. Vinyl ester resin compositions. DOW CHEMICAL CO. 16 Sept., 1969 [16 Sept., 1968], No. 45670/69. Headings C3B and C3P. A vinyl ester resin composition in the form of a water-in-oil emulsion that is capable of being cured to a thermoset product comprises (A) from 30 to 70 weight per cent water and (B) from 70 to 30 weight per cent of an oil phase comprising (a) from 40 to 70 weight per cent of a resinous material selected from (1) a vinyl ester resin containing linkage groups and terminal ethylenic unsaturation, and (2) the product of the reaction of such a vinyl ester resin with from 0À1 to 0À6 mole of a dicarboxylic acid anhydride per equivalent of hydroxyl group in the vinyl ester resin, and (b) from 60 to 30 weight per cent of a substantially water-insoluble monomer that is copolymerizable with the resinous material. The vinyl ester resin is prepared by reacting about equivalent proportions of (1) a polyglycidyl)ether derived from an epihalohydrin and a polyhydric phenol or polyhydric alcohol with (2) acrylic acid, methacrylic acid and/or a hydroxyalkyl acrylate and/or methacrylate half ester of maleic acid wherein the alkyl group contains from 2 to 6 carbon atoms. In the examples emulsions containing water, vinyl ester resins derived from bisphenol A type polyepoxide, methacrylic acid, maleic anhydride, maleate half-ester of #- hydroxy ethyl acrylate, polyglycol type polyepoxide, maleate half-ester of hydroxy propyl acrylate and phthalic anhydride, styrene, monochlorostyrene, sand and chopped glass fibre were prepared and cured using benzoyl peroxide and dimethyl aniline.
Patent GB-1178517-A (GB)
Title: Improvements in or relating to Pilot Signal Regulating Systems
IPC: H04B3/10
Filed: 1968-09-27
Abstract: 1,178,517. Automatic volume control. SIEMENS A.G. 27 Sept., 1968 [28 Sept., 1967], No. 45881/68. Heading H4R. In a communication system a single pilot receiver is used to scan sequentially a number of communication channels and to feed pulses to respective control networks in the channels to increase or decrease the attenuation of the channels to maintain the pilot signals at a reference level. Fig. 1 shows a system in which a switching device W sequentially connects the pilot signals, separated from each of the channels at E, to a common pilot receiver PE. The pilot is compared at D with a reference level XK and the error signal causes the energization of a line e r , if the pilot signal exceeds a predetermined level, or a line e v  if the error signal is less than a second predetermined level. The signals on lines e r  and e v  are multipled to individual control networks for each channel where they are fed via an OR gate 1 to an AND gate 2 which also receives a signal on line e a  from a switch 18, synchronized with switch 17, so that the respective AND gate associated with the channel currently being sampled, is enabled, causing operation of relay L. Closing of contact I causes the charge on capacitor C to be either increased, by charging from U B  through resistor 3 if there is no pulse on line e r , i.e. line e v  is energized, or discharged through diode 4 if line e r  is energized. The change in voltage level on the capacitor changes the source drain path impedance of f.e.t. 12, which is connected in the negative feedback line of the amplifier RV so as to make appropriate adjustment of the amplifier gain. Fig. 3 shows an alternative form for the control network for the channel, using a f.e.t. 16, for the charge/discharge switch and showing the circuits for the OR gate, using diodes 8 and 9, and the AND gate using transistors 10 and 11.
Patent GB-1379085-A (GB)
Title: Production of aggregates or fillers suitable for use in construction  mixes
IPC: C03B19/10
Filed: 1972-10-05
Abstract: 1379085 Devitrified aggregate GOSUDARSTVENNY NAUCHNO - ISSLEDOVATELSKY INSTITUT STEKLA 5 Oct 1972 45964/72 Heading C1M A process for producing an aggregate or filler comprises (a) mixing a molten metallurgical slag with one or more inorganic materials, (b) founding the mixture to form a molten vitreous mass under oxidifying conditions and simultaneously foaming the mass by oxidative combustion of a jet of fuel in the mass, (c) granulating the foamed vitreous mass, and (d) thermally treating the granules so as to devitrify them through substantially their entire mass. The founding is preferably effected at 1560- 1580‹ C. Foaming may be aided by introducing, together with the jet of fuel, a compound which decomposes at the temperature of the melt to form a gas. The thremal treatment in step (d) is preferably carried out at 1050-1080‹ C. in a rotary furnace for at least 30 minutes. The inorganic additive may be sand or an alkali. In a specific example, blast furnace slag, sand and broken glass are employed in a weight ratio of 7 : 6 : 1. The filler produced is white unless a non-white filler, e.g. Co 2 O 3 , Cr 2 O 3 , NiO, is added.
Patent GB-1489894-A (GB)
Title: Platinum-iridium-containing catalysts
IPC: B01J23/89
Filed: 1974-10-24
Abstract: 1489894 Hydrocarbon conversion catalysts EXXON RESEARCH & ENG CO 24 Oct 1974 [29 Oct 1973 (2) 4 Jan 1974] 46023/74 Heading B1E [Also in Division C5] Catalysts comprise 0.05 - 3 wt. % pt, 0.05-3 wt. % Ir and an amount sufficient to increase the selectivity and/or activity in a hydrocarbon conversion reaction of Pd, Ag or Ni on a support. The catalysts may be prepared by impregnation, drying, calcining and optionally reducing and sulphiding. Halogen is preferably added during the impregnation.