baber/WOPTO huggingface dataset:
Patent GB-1363889-A (GB)
Title: Billet extractors
IPC: F27D3/00
Filed: 1972-12-15
Abstract: 1363889 Discharging furnaces BRITISH GAS CORP 15 Dec 1972 [12 Nov 1971] 52738/71 Heading F4B Apparatus for extracting billets 4 from a furnace comprises a main gripper 26 and an auxiliary gripper 41. In operation the main gripper 26 is moved forward by a ram 15 and the jaws 27, 28 close on the leading billet 4, the main gripper then being retracted to withdraw the billet from the furnace. The auxiliary gripper 41 is then actuated, and plate 44 moved towards fixed plate 42 so that if the succeeding billet is stuck to the leading billet it is gripped between plates 44, 42. Rams 37, 38 on the main gripper 26 are then operated to pivot the gripper 26 about the axis of a shaft 23 to twist the leading billet relative to the suceeding billet and break the joint between them. The main gripper 26 is then returned to its normal orientation, and jaws 27, 28 are opened to release the leading billet onto a conveyer (not shown). The jaws 27, 28 are then closed and the gripper 26 advanced towards the succeeding billet, the clamping plate 44 is retracted and the main gripper 26 advanced further to push the succeeding billet back into the furnace. The main gripper 26 then returns to its rest position and the plate 44 is actuated to close the furnace.
Patent GB-1447386-A (GB)
Title: Electric switches
IPC: H01H19/62
Filed: 1973-11-14
Abstract: 1447386 Mechanical switches QELEQ Ltd 6 Nov 1974 [14 Nov 1973] 52853/73 Heading H1N A multiplicity of micro-switches 10, Fig. 1, are actuated by cams 20A-20D on a shaft 11 driven from a manually rotated spindle 25 through reduction gears 12, 12A and resiliently biased to a central position. Tension springs 30, 31 extending around formers 33, 34 on the spindle 25 act in opposite directions to centralize the spindle 25. Additional centralizing means comprises a spring-loaded roller 42 engaged in a detent cam 41 on the shaft 25.
Patent GB-1536409-A (GB)
Title: Electrically controlled electric fluid or optical switching device
IPC: G09F9/37
Filed: 1975-12-24
Abstract: 1536409 Controlling light THOMSON-CSF 24 Dec 1975 [27 Dec 1974] 52901/75 Heading G2F [Also in Divisions F2 H1 and H2] An electrostatic device for switching optical radiation comprises a movable member 5 Fig. 1 which comprises an electret body carrying a permanent electric charge and arranged between a pair of conductive pads 3, 4 on a support frame 1, 2 12 for movement between the pads 3, 4 under the control of electric bias applied to the pads. In the arrangement shown in Fig. 1 a number of devices are arranged for cooperation with a distributing light guide 7 of a light source 8 and each member 5 is a flexible light guide arranged opposite the outlets of the guide 7 in one position but may be arranged to cooperate with a second light guide (not shown) in its other position. In a modification the electret member 5 Fig. 5 may be arranged to slide parallel to one of the support plates 2 under the influence of bias applied to conductive pads 3,4 spaced endwise on the plates 2. In this Example the member 5 is opaque and has an aperture 25 whereby it acts as a shutter for a radiation source 8. Alternatively the aperture 25 may diffuse the light or contain a lens or prisms.  In another example the member is pivoted and moves to alignment with alternative guides. In a further example the electret member 5 carries a reflecting layer and is movable for modifying the reflection from a beam.
Patent GB-1346668-A (GB)
Title: Methods of cutting a block of light-weight concrete into smaller  elements and to apparatus for carrying out the method
IPC: B28B11/14
Filed: 1971-11-15
Abstract: 1346668 Block cutting HENRIKSEN og HENRIKSEN INDUSTRI AS 15 Nov 1971 [16 Nov 1970] 52933/71 Heading B5A A lightweight concrete block 3 in plastic condition is sub-divided by vertical cutters 9 in a frame 10, which may be vertically oscillated, when transferred from a flat stationary support 1 to a flat stationary support 2 by a frame 6 supported by rollers 5 engaging stationary beams 4. The supports may comprise wheeled mould bottoms conveyed to and from the cutting station where they are held by blocks 14; the block 3 is clamped within the frame 6 by plates 7 adjusted by screws 15, and is abutted at its rear end by spaced vertical slats 8 urged against the block by screws 17 acting on a bar 16. Each cutter 9 is aligned with a space between adjacent slats.
Patent GB-1514929-A (GB)
Title: Production of useful heat partly from solar energy
IPC: F24S90/00
Filed: 1974-12-09
Abstract: 1514929 Utilizing solar energy EUROPEAN PROFILES Ltd 12 Feb 1976 [9 Dec 1974] 53078/74 Heading F4U A heating apparatus for a gas, e.g. air, comprises a solar heating panel 1, a compressor 2, a heat exchanger 3 and an expansion device 4 whereby gas heated in the solar panel is heated further by being compressed and heat is then extracted therefrom in the heat-exchanger. As shown in Fig. 2, the solar panel forms part of a pitched roof and comprises a transparent glass or plastics panel 5 and a heat-absorbing metal layer 6, having a dark-coloured surface defining an air passage 7 extending from an open lower end to a chamber 8, housed in the apex of the roof and connected by a duct 11 to the compressor inlet. The compressor and expansion device may be driven by a common rotary drive.
Patent GB-1462369-A (GB)
Title: Furnace for heat treating articles
IPC: C21D11/00
Filed: 1973-11-16
Abstract: 1462369 Furnace control system BORAX CONSOLIDATED Ltd 8 Nov 1974 [16 Nov 1973] 53278/73 Heading F4B In a furnace for the heat treatment of articles, the heating means has a control system comprising three thermocouples T1, T2, and T3 connected to pyrometer controllers P1, P2, and P3 respectively. In operation the furnace is initially under the control of thermocouple T1 in the furnace atmosphere and pyrometer P1 which is set to a temperature (e.g. 1100 C.) above that (e.g. 900 C.) required for the heat treatment to be carried out. T2 measures the temperature of the article being treated and is connected to P2 which is set to a temperature (e.g. 850 C.) below the required treatment temperature. When the temperature set on the P2 controller is reached it operates a relay to put the furnace under the control of thermocouple T3 in the furnace atmosphere and pyrometer P3 which is set to the required treatment temperature (900 C.) and at the same time starts a timer "A". In this way the temperature of the workpiece rises rapidly to 850 C. and then slowly to 900 C., then being maintained at this level by pyrometer P3. The timer switches off the furnace after the required period. Further thermocouples T4 and T5 may be attached to a recorder which may be fitted with a timer "B" to economize in the amount of recorder chart used if the equipment is left running over long periods.
Patent GB-1359698-A (GB)
Title: Packaged semiconductor article and method for fabricating the same
IPC: H01L23/433
Filed: 1971-11-17
Abstract: 1359698 Semi-conductor devices SIGNETICS CORP 17 Nov 1971 [27 Nov 1970] 53448/71 Heading H1K Contact pads at the periphery of integrated circuit semi-conductor chips are bonded ultrasonically or by soldering in a nitrogen torch to the mating inner ends of groups of contact leads of a lead frame formed by photoengraving a gold plated KOVAR (Registered Trade Mark) sheet. After coating with silicone resin each chip, together with adjacent parts of the leads, is encapsulated in plastics by injection moulding and the leads severed, leaving the chips suspended on tabs extending from the frame into the plastics mouldings. The leads have stressrelieving convoluted sections adjacent their inner ends and notches to key them into the encapsulant. After electrical testing each chip is punched out of the sheet by a welding head which in a single movement releases the tabs and presses the leads against the ends of a corresponding set of leads of a heavier section diestamped lead frame supported on an anvil, where all the leads are simultaneously welded to the lead frame. The heavier leads are severed after a further encapsulation step to leave the chips supported in the frame by tabs as before. After further tests they are punched out of the frame and their leads bent downwards so that they may be plugged into a printed circuit.
Patent GB-1131500-A (GB)
Title: Concrete
IPC: C04B40/00
Filed: 1965-12-16
Abstract: 1,131,500. Mixing concrete. ALLGEMEINE STRASSENBAUBEDARFS G.m.bH. 16 Dec., 1965 [17 Dec., 1964], No. 53521/65. Heading C1H. [Also in Divisions B1 and B5] A method of mixing concrete comprises compacting ballast, measuring the volume of the interstitial spaces in the ballast, mixing a quantity of liquid cement mortar, equal in volume to the measured volume, with the ballast, measuring the apparent increase in volume of the ballast, and mixing a further quantity of liquid cement mortar, equal in volume to the apparent volume increase, with the ballast. The mixing is preferably carried out in a container which is resiliently mounted at its base which has shaking means attached thereto, and has a vertically movable horizontal platen with attached pointer at its top. The ballast (proportions of grain sizes are given) is compacted in the container by shaking, and the interstitial volume measured with a liquid. The required volume of cement mortar is made up, mixed with dry ballast (equal in weight to the original ballast) and after shaking under a constant platen pressure, the volume increase of the mix is measured by the pointer, the required further volume of mortar being then added.
Patent GB-1280588-A (GB)
Title: Improvements in or relating to a speed variator with friction elements
IPC: F16H57/037
Filed: 1970-11-13
Abstract: 1280588 Variable-speed friction gears AUTOMOBILES PEUGEOT and REGIE NATIONALE DES USINES RENAULT 13 Nov 1970 [19 Feb 1970] 54031/70 Heading F2D A continuously variable friction gear for a motor-vehicle has interpenetrating friction discs 10, 11 respectively fast with an engine driven shaft 8 and an output drum 13 which is carried at each end in journals 18, 19 of a rocking yoke 20 pivoted transversely at journals 30, 31, in fixed casing halves la, 1b, about the axis of a layshaft 34 to effect ratio shift by hydraulically operated linear piston motors 40, 41 (Fig. 4) acting each side on abutment faces 40b, 41b on the rocking yoke 20, bosses 4, 5 of the fixed casing halves 1a 1b (Figs. 2 and 5), supporting the driving shaft 8 at each side of its friction discs 10, being shaped to provide clearances J 1 , J 2  for the ratio shift rocking movement of the yoke 20, the arrangement enabling both the driving shaft 8 and output drum 13 to be rigidly supported in journals at each side of the interpenetrating friction discs to avoid the serious drawbacks i.e. shaft bending stresses &c. associated with the usual overhanging cantilever arrangement of the shaft and drum of the known type of interpenetrating friction disc gears. As shown, the output drum 13 drives via meshing gears 33a, 33b to the layshaft 34 having a gear 38 directly meshing a crown wheel 39 of an output differential D, a reverse idler 37b being selectively slidable into engagement with gears 37a, 37, formed respectively on the driving shaft 8 and layshaft 34, for reverse drive. A chamber 21 within the output drum is hydraulically pressurized, via a duct 48 &c., to engage, via a piston 22, the friction gear discs 10, 11 for drive therethrough, lubricant ducts 49-53 &c. and a sump 24b being provided for the friction discs, the yoke bearing journals and the meshing gears 33a, 33b.
Patent GB-1328010-A (GB)
Title: Preparation of non-aqueous dispersions of thermosetting film- forming copolymers
IPC: C08F2/08
Filed: 1971-11-22
Abstract: 1328010 Aminoplast/addition copolymer compositions FORD MOTOR CO Ltd 22 Nov 1971 [1 March 1971] 54198/71 Headings C3G C3P and C3R A non-aqueous dispersion of a thermosetting film-forming polymer is obtained by copolymerizing at least one ethylenically unsaturated monomer containing an epoxy, hydroxy, cyanato or carboxylic acid group with at least one ethylenically unsaturated monomer lacking such a group in the presence of a copolymer of at least two ethylenically unsaturated monomers, all of which contain at least 4 carbon atoms and at least one contains at least 11 carbon atoms, and at least one of which contains an epoxy, hydroxy, cyanato or carboxylic acid group, in a medium which is non-solvent for the copolymer formed, and blending an aminoplast resin with the resultant dispersion. In the examples a first copolymer is prepared in butanol from 2 - ethylhexyl acrylate and hydroxypropyl methacrylate, plus, in Examples 2 and 4, butyl methacrylate, styrene, and acrylic acid; to the product solution is added an aliphatic naphtha and styrene, butyl and methyl methncrylates and acrylic acid, plus, in Examples 3 and 4, acrylonitrile and hydroxypropyl methacrylate; the catalyst used is butyl peroctoate in all cases; to the product dispersions is added an alkylated melamine-formaldehyde resin in xylene/butanol plus a mixed aliphatic/aromatic hydrocarbon solvent to give a lacquer.
Patent GB-1425994-A (GB)
Title: Printing apparatus
IPC: G06K1/12
Filed: 1973-03-22
Abstract: 1425994 Selective printing RCA CORPORATION 22 March 1973 [27 March 1972] 54383/74 Divided out of 1425993 Heading B6F [Also in Divisions H1 and G3] Printing elements (not shown) in a concentric ring code printer are actuated by stimulus sensing means 178 mounted on a rotating carrier 42 carrying the printing elements, the sensing means 178 responding to selectively actuated stimulus emitting means 176a-d to energize printing element actuators, the actuators remaining atuated until a succeeding group of sensing means responds to the emitting means. The stimulus emitting means may be light emitting diodes or electromagnets, the sensing means being photo silicon controlled rectifiers and reed contact units respectively. The photo SCRs remain conductive after responding to a light emitting diode until a switch 230 is opened, whereas the reed contact units (Fig. 5, not shown) include a holding magnet (192). The action of which is opposed by an electromagnet 194 when the printing elements are to be de-energised.
Patent GB-1333968-A (GB)
Title: Sealed multiple contact unit
IPC: H01H1/66
Filed: 1971-11-25
Abstract: 1333968 Magnetic contact units INTERNATIONAL STANDARD ELECTRIC CORP 25 Nov 1971 [2 Dec 1970] 54786/71 Heading H1N A magnetic flux operated multiple contact unit including planar flux guides 2 and flat movable armature contacts 9 arranged in a sealed two-part shell 1, 8 of insulating material comprising a mixture of low melting point sintered glass frit with inert fillings, such as mica or stone powder, in which the guides 2 are tightly enclosed has a step 3 in its shell part 1 so dimensioned and positioned with respect to the armatures 9 and flux guides 2 so that it may define the operating airgaps. The armatures 9 are mounted on springs 10 spot-welded or riveted to a flux guide 2 and the spring ends 11 engage the step 3 to set the gaps between the contact armatures 9 and the other guides 2. The armature may be polarized or remanent and a change-over contact arrangement as in Fig. 8 may have a polarizing permanent magnet 15 and a mounting member 16 which does not bias the armature. The sealing may be effected by the use of a fluorocarbon elastomer gasket 5 or by metal parts (Fig. 3, not shown) pressed in the edges of the shell parts and secured to each other by beading, flanging, cold welding or electric roller welding so that the contact parts are not heated during the sealing operation.
Patent GB-1462148-A (GB)
Title: Method of improving the quality of leachate from santiray landfills
IPC: C02F1/52
Filed: 1974-12-19
Abstract: 1462148 Waste material treatment CHEMFIX Inc 19 Dec 1974 [2 Jan 1974] 54865/74 Headings C1K and C1H The quality of leachate from sanitary landfill material is improved by disposing the landfill material and a treated waste material in contact with each other in such relation positionally that the leachate will trickle down through the treated waste material, which is a consolidated chemically and physically stable earth-like material obtained by mixing with waste material an aqueous solution of an alkali metal silicate and a setting agent for the silicate, the setting agent containing metal ions, the mixing causing the alkali metal silicate and setting agent to chemically react and convert the mixture into the earth-like material, which is substantially water-insoluble. The setting agent may be Portland cement, lime, gypsum or calcium carbonate. The waste material may be industrial waste from a steel finishing plant.
Patent GB-1262539-A (GB)
Title: Fluoroalkyl ethers and process for their manufacture
IPC: C07C43/12
Filed: 1969-11-10
Abstract: 1,262,539. Fluoralkyl ethers. CIBA GEIGY A.G. 10 Nov., 1969 [25 Nov., 1968], No. 54988/69. Heading C2C. [Also in Division D1] The invention comprises compounds of the formula  where m, n and q are positive integers, m is 4 to 9, n is at most 2 and q is at most 4. The compound may be prepared by reacting compounds of the formulµ and where p is 1-8, with lithium aluminium halide in an anhydrous medium in the presence of hydrogen halide. The compounds in which q is 2-4 may be converted to compounds of the formula  where r is 2-4, by reaction with chlorine and treatment of the chlorinated product with a base.
Patent GB-1334950-A (GB)
Title: Device for the individual adjustment of the striking force in a typewriter
IPC: B41J7/94
Filed: 1971-11-29
Abstract: 1334950 Typewriters PAILLARD SA 29 Nov 1971 [15 Dec 1970] 55300/71 Heading B6F The impact of each type-bar 1 in a typewriter is adjustable by adjusting the tension in a spring 25 opposing impact of the type-bar, the spring being anchored to a member 17 at a position determined by the required tension, the member 17 being pivoted on case shift so that the impact is automatically adjusted. According to the anchoring position-of the spring on the member 17; the impact may remain unchanged, increase or decrease on case shift.
Patent GB-1458381-A (GB)
Title: Ground anchoring devices
IPC: E02D5/80
Filed: 1973-12-05
Abstract: 1458381 Device for forming ground anchors DYCKERHOFF & WIDMANN AG 5 Dec 1973 [6 Dec 1972 16 Aug 1973] 56290/73 Heading E1B A device for use in the construction of ground anchors comprises a hollow cylinder 4, which closely encompasses the transverse periphery of a steel bar 2, through which passes a channel 8 with openings (on the surface of the body) and which is sealed by a sleeve 9 of elastic material. The injection of mortar under pressure into the channel 8 through tubes 6 causes the concrete surrounding the cylinder 4 to expand outwardly to form a ground anchor and the sleeve acts as a one way valve for the mortar. The outer surface of the steel bar 2 and the inner surface of the cylinder are threaded. The cylinder is formed in two halves each of which has a channel 8, and the sleeve is made of foamed plastics material. In another embodiment Fig. 6, the body 13 itself is made of elastic material and encompasses the steel bar 2, and the channel comprises a conduit 14 with openings 15 which passes through the body.
Patent GB-1410074-A (GB)
Title: Simplified digital to sin/cos converter
IPC: H03M1/00
Filed: 1972-12-06
Abstract: 1410074 Digital to analogue converters INTERNATIONAL STANDARD ELECTRIC CORP 6 Dec 1972 [13 Dec 1971] 56302/72 Heading H3H A digital resolver for converting digital information to sine and cosine components comprises a standard frequency source 3 coupled to a first n-stage counter 4 for generating a reference sinusoidal waveform, a second n-stage counter 6 for providing sampling pulses representative of the digital information and circuits 12, 17 responsive to the reference waveform and the sampling pulses to supply a sinusoidal waveform output related to the input digital information. The resolver may be used in a radar system for converting azimuth change pulses (A.C.P.) generated by the rotation of the radar antenna into sine and cosine components of the angular position of the antenna. The counter 4 supplies a 60 Hz square wave signal to circuits 8-10 which convert the signal to the reference sinusoidal waveform. The counter 6 is connected to a mixer 5 which is supplied with the output of the source 3 and the azimuth change pulses, the resolver generating 4096 A.C.P.s for each revolution of the antenna. The counter 6 therefore advances by one increment with respect to the counter 4 for each A.C.P. and when full provides an output pulse to a generator 11. A detector 15, coupled to the two most significant bit stages of the counter 6, detects a count of 1024 pulses and supplies to a generator 16 a pulse which is 90 degrees out of phase with the pulse supplied to the generator 11. The generators 11, 16 supply sampling pulses to the sample/ hold circuits 12, 17 in which the reference waveform is sampled so that filters 13, 18 provide the cosine and sine component signals. At each passage of the antenna through a reference position (e.g. North) an azimuth reference pulse (A.R.P.) is generated which, via circuits 7, 20 enables the resetting of the counter 6 to zero when the counter 4 returns to zero. Modifications of this resetting circuit are described, Figs. 2, 3 (not shown), to prevent errors occurring on resetting when A.C.P. rates which are high compared with the frequency of the reference waveform are employed.
Patent GB-566365-A (GB)
Abstract: 566,365. Moving-coil ammeters and voltmeters. ELECTROFLO METERS CO., Ltd., and COULING, C. W. June 7, 1943, No. 9088. [Class 37] In a magnetic unit having a cylindrical core spaced from the ends of poles forming part of a permanent magnet or electromagnetic system so as to provide an arcuate air gap and means for accurately locating the core coaxial with the bore, the locating means comprise a plurality of spacing spheres, or of cylinders with their axes parallel with those of the core and pole-bore, the spacing spheres or cylinders being arranged to one side of a diameter of the core and means being provided for maintaining or urging the core and poles in contact with the spacing spheres or cylinders. In the movable-coil instrument shown, the core 3 is spaced from the polepieces 2, 21 of the permanent magnet 1 by four balls or rollers 6 which are carried in slots in a non-magnetic frame 4 secured to the core by a screw 5. These balls are pressed into contact with the pole faces by a screw 7 passing through a non- magnetic bridge 8 between the polepieces. A second non-magnetic bridge 8<1> may also be provided. The screw 7 may be replaced by a wedge.
Patent GB-1166180-A (GB)
Title: Electromagnetic Clutch-Brake Units
IPC: F16D67/06
Filed: 1967-12-13
Abstract: 1,166,180. Clutch-brake combinations. FORSTER ELEKTRONIK G.m.b.H. 13 Dec., 1967 [16 Dec., 1966], No. 56722/67. Heading F2L. An electromagnetic clutch/brake unit for punched card, or strip, readers and magnetic tape apparatus comprises a clutch/brake plate 5 slidably mounted on a splined hub 7 fast with an output shaft 9 and arranged between a beltdriven input pulley 8, journalled at 10 on the output shaft 9, and a stationary electromagnet coil 3 mounted in a stationary housing 1, the pulley 8 and housing 1 having integral friction linings 4, 3 respectively thereon such that the clutch/brake plate 5 is normally spring engaged at 6, 11 with the pulley 8 or electromagnetically braked on the stationary housing 1 to drive or stop the output shaft 9.