baber/WOPTO huggingface dataset:
Patent GB-1422134-A (GB)
Title: Three point linkage
IPC: A01B59/043
Filed: 1972-09-20
Abstract: 1422134 Improved three point linkage P A SHELTON 21 Nov 1973 [20 Sept 1972] 43641/ 72 Heading A1P The upper link of a three point tractor linkage comprises two hydraulic rams 12a, 12b attached to the tractor frame via ball and socket joints 18, 19 respectively, and connected at their rearmost ends to a member 214. The rams are controlled by means of a double acting valve unit 227 which is connected to a hydraulic pump and which together with two locking valves 225, 226 directs the flow of hydraulic fluid to and from the cavities 223, 221 and 222, 224 on either side of each ram piston. The three valves may be adjusted so that the link can be varied in length, moved laterally relative to the direction of advance (in the direction of arrows XY) or caused to become rigid to lateral movement. The power take-off shaft may pass between the two rams 12a, 12b to an implement coupled to the tractor.
Patent GB-945554-A (GB)
Title: Method of and apparatus for the drying of materials
IPC: F26B5/04
Filed: 1960-12-19
Abstract: 945,554. Drying systems and apparatus. LEYBOLD-ANLEEGEN HOLDING A.G. Dec. 19, 1960 [Dec. 19, 1959], No. 43669/60. Heading F4G. A method of drying material which dries either through capillary pores or by diffusion comprises maintaining a drying chamber at subatmospheric pressure by an evacuating pump means to release water vapour from the material, which vapour is also removed by the pump means, the chamber being shut off from the pump means for intervals to permit a partial moisture exchange to take place within different zones of the material. Examples of the time intervals are stated in which evacuation proceeds for periods between one and fifty minutes and the chamber is shut off from the pump means for periods of between one and sixty minutes. The material 3 to be dried is contained in a vessel 2 within a stationary or rotary drying chamber 1 which is maintained at sub-atmospheric pressure by a vacuum pump 6 through a pipe 5 having a shut-off valve 7 controlled through linkage, an electric servodevice 11 and timing means 13 to open and close the valve at periodic intervals.
Patent GB-1460645-A (GB)
Title: Method and apparatus for producing a semiconductor component
IPC: H01L21/00
Filed: 1974-10-09
Abstract: 1460645 Semi-conductor devices BBC BROWN BOVERI & CO Ltd 9 Oct 1974 [11 Oct 1973] 43685/74 Heading H1K [Also in Division B3] A peripheral concave chamfer is provided around a semi-conductor wafer 1 by sandblasting from a nozzle 12 which is guided so as to be aligned parallel to the at least two PN junctions extending across the full area of the wafer 1. In the embodiment shown the guide mechanism consists of an auxiliary nozzle 15 which directs gas at a constant rate on to the upper surface of the wafer 1 as the latter rotates on a vacuum holder 10. The nozzle 15 hovers at a controlled height above the wafer 1 and is connected to the sandblasting nozzle 12 by a holder 13. In a modification the guide mechanism includes a rolling ball attached to an arm, which supports the nozzle holder 13 at a fixed height above the wafer 1. Within the wafer 1, which may constitute a thyristor, there is at least a central zone flanked by two more highly doped zones of the opposite conductivity type.
Patent GB-1057483-A (GB)
Title: Improvements in tobacco rod-making machines
IPC: A24C5/31
Filed: 1962-07-31
Abstract: The Specification describes the same machine as that described in Specification 1,057,481 but the claims are directed to a continuous rod machine for producing tobacco products in which a continuous stream of tobacco is formed into a rod and enclosed in an outer wrapper with a longitudinal lap joint while in continuous movement, incorporating a device for forming the seam joint on the wrapper, which device is movable to an operative position and means for displacing incorrectly formed rod products especially at the commencement of operation of the machine, and in which means are provided to bring the displacing means into operation for a predtermined period after the said device has been brought into the operate position.
Patent GB-1529824-A (GB)
Title: Ballast circuit for gaseous discharge lamps
IPC: H05B41/288
Filed: 1975-10-24
Abstract: 1529824 Automatic control of current and power GENERAL ELECTRIC CO 24 Oct 1975 43788/75 Heading G3R [Also in Division H2]  A circuit for regulating the current supplied to a discharge lamp 63 comprises a transistor 66, a current sensing resistor 67 and an energy storing inductance 70. Initially a capacitor 75 is charged from a D.C. supply 64, 65 via a high value resistor 76 until a silicon bilateral switch 78 breaks down causing transistors 79, 124 and 66 to conduct. Current is supplied to the lamp via the inductance  70 which is constituted by the primary winding of a transformer having a secondary winding 71 which quickly charges the capacitor 75 to maintain the conduction of the transistor 66. When the current sensed by the resistor 67 reaches a predetermined level, a transistor 80 conducts thereby switching off the transistors 79, 124 and 66. The inductor 70 then discharges through the lamp until the current sensed by a resistor 74 falls to a predetermined low level whereupon the transistor 80 is switched off and the transistor 66 is switched on again. In a modified circuit shown in Fig. 6, a constant wattage is supplied to the lamp. A signal representing the lamp voltage is supplied to an input 96 of an operational amplifier 92 and when this voltage exceeds a predetermined level a signal is supplied to the input 101 of an operational amplifier 99. The input 100 of the amplifier 99 is connected to a current sensing resistor 19 and the amplifier 99 adds the signals on the inputs 100, 101 to provide a signal to a comparator 105. Of the lamp voltage increases, the comparator 105 reduces the conduction of the transistor 18 so that the lamp power remains constant.
Patent GB-953021-A (GB)
Title: Improvements in or relating to hot-water boilers
Inventor: MCCULLOCH DONALD PATON
IPC: F24H1/28
Filed: 1961-12-07
Abstract: 953,021. Hot-water boilers. HENRY WILSON & CO. Ltd. Dec. 5, 1962 [Dec. 7, 1961], No. 43790/61. Heading F4A. In a hot-water boiler comprising an insulated cylindrical outer casing (not shown), within which is coaxially mounted a unit having a lower fire-box 14 from which fire tubes 15 extend upwardly through a water chamber to an upper smoke box 16 with a flue outlet 17, condensation of corrosive combustion products within the fire tubes during starting is minimized by providing a baffle 18 around the tubes to restrict the water circulation. The lower edge of the baffle is welded to the rim of the fire-box 14 and four holes 19 are provided near this edge to allow entry of water. The upper edge of the baffle extends beyond the lower rim of the smokebox and is spaced therefrom to provide an outlet for the circulating water. The easing 13 of the water chamber has water inlet and outlet connections 20, 21. The fire tubes may be provided internallywith helical baffles.
Patent GB-1043204-A (GB)
Title: Improvements in or relating to braid-covered flexible tubing
Inventor: SHEFFIELD KENNETH JOHN WILLIAM
IPC: F16L33/01
Filed: 1961-01-07
Abstract: 1,043,204. Flexible pipe coupling. POWER AUXILIARIES Ltd. Jan. 25, 1963 [Dec. 7, 1961], No. 43880/61. Heading F2G. A brazed or welded joint 3 between a flexible braid covered pipe 2 and an end member 1 having a surface 6 tapering away from the length of the pipe 2 is reinforced by passing the braid over the tapered surface 6, placing a split ring 7, of smaller diameter than the maximum diameter of the tapered portion of the end member, over the braid, folding the braid back over the ring 7 and placing a ferrule 9 over the ring 7 and turned back braid. The ferrule 9 is swaged at 11 to penetrate a recess 12 in the end member and is of a suitable diameter to force the braid lengths into contact with each other and the maximum diameter surface 5 of the end member 1.
Patent GB-968355-A (GB)
Title: Ventilating device
IPC: F24F7/06
Filed: 1961-12-08
Abstract: 968,355. Chimney and ventilating shaft tops. B. H. MILLER. Dec. 8, 1961, No. 44028/61. Heading F4J. A combined roof mounted air circulator and air exhauster comprises a vertically extending air stack 10, Fig. 1, a flange extending radially outwards from the upper edge of the stack and a dome 20 connected in vertically spaced relation with the flange by circumferentially spaced vertical standards 18, coated with yieldable material 21 and acting as guides for a freelymounted air damper and diffuser 22 of inverted conical shape. The damper which may may be of spun aluminium, plastic or other lightweight material, has a cupped portion 23 seating on a rubber or like sealing and vibration damping ring mounted upon a lip on the flange. Air is expelled from the stack by a motor-driven fan 14 but with the motor reversed the damper closes on its seat and the device becomes an air circulator. The dome and damper-diffuser may be formed of translucent plastic material so that the device can act as a skylight. A pressure relief opening may be provided in certain cases at the apex of the damper-diffuser. In a modification, Fig. 5, the damper-diffuser 36 has concentric upwardly directed grooves 38 to increase its rigidity and aid its lift and seats against an additional rubber or like ring 40 in its uppermost position. In another modification, Fig. 3 (not shown), the flange is integral with a frusto-conical skirt 11 adapted to be secured to a roof 13. U.S.A. Specification 2,700,331 is referred to.
Patent GB-968859-A (GB)
Title: Movable forging tongs
IPC: B21J13/10
Filed: 1960-12-22
Abstract: 968,859. Forging manipulators. HYDRAULIK G.m.b.H. Dec. 22, 1960 [Dec.28, 1959;  Jan. 16, 1960], No. 44115/60. Heading B3H. A forging manipulator has its tongs holder 5 and driving wheels 3 rotated by rotary oil motors supplied from a gas-loaded oil-pressure accumulator 21. The tongs 4 are opened and closed by an hydraulic piston 12 and the tongs holder 5 carries a gear 13 meshing with a pinion 15 driven through gearing 14 by a gear motor or a rotary-piston motor 16. Raising and lowering of the holder 5 is effected by lever arms 8. The driving wheels 3 are driven through gearing by a rotary oil motor 19, Fig. 2 (not shown). Both motors are supplied from the accumulator 21 whose upper chamber 23 is charged with air or gas from cylinders 22 and whose oil chamber 25 is charged by a pump 30 driven by an electric motor 33. A non-return valve 35 and by-pass valve 28 are provided. In another embodiment, Figs. 3, 8 (not shown), the manipulator carriage has one or more steerable driving wheels each rotated by one or two rotary oil motors mounted on the steering forks. The latter are actuated through a raok-and-pinion by an hydraulic piston.
Patent GB-1176694-A (GB)
Title: Process for the Production of Oxalic Acid and Copper Chloride.
Inventor: HORN PETER EDWIN
IPC: C07C69/15
Filed: 1967-09-29
Abstract: 1,176,694. Oxalic acid. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 Sept., 1968 [29 Sept., 1967], No. 44476/67. Heading C2C. Copper oxalate, particularly that produced as a purge from a process for the oxidation of olefinic compounds in the presence of noble metal catalysts with a copper salt redox system, is converted to oxalic acid and cupric chloride by dissolving in aqueous hydrochloric acid and recrystallizing the oxalic acid therefrom. The hydrochloric acid is at least 6 normal. The recrystallization is by cooling to ambient temperature and the cupric chloride may be recycled to the oxidation process, e.g. the preparation of vinyl acetate from ethylene, oxygen and acetic acid using palladious chloride catalyst with copper acetate or chloride.
Patent GB-1474030-A (GB)
Title: Fire seal
IPC: B32B18/00
Filed: 1973-09-22
Abstract: 1474030 Fire seal ROLLS-ROYCE (1971) Ltd 9 Sept 1974 [22 Sept 1973] 44560/73 Heading A5A A fire seal for airframes comprises an elastic inner tube 2 capable of inflation, a resilient intermediate layer 3 surrounding the inner tube which is fire-resistant as defined in BS 3G.100 3.13 and a resilient outer layer 4 having greater wear resistance than layer 3 and capable of forming a fluid-tight seal with an adjacent surface against which it is urged. Preferably tube 2 is silicone elastomer reinforced by fibre material, layer 3 is carbon felt and layer 4 is glass fibre coated or impregnated with rubber.
Patent GB-1398976-A (GB)
Title: Methods of forming evaporated layers
IPC: H01J9/20
Filed: 1971-09-25
Abstract: 1398976 Vapour deposition E M I Ltd 25 Sept 1972 [25 Sept 1971] 44798/71 Heading C7F Material 4 to be evaporated, e.g. lead oxide is heated to a temperature above e.g. 100 C above, the desired evaporation temperature whilst a shield 8 is positioned between the material and the substrate 2. The temperature is then lowered to the desired evaporation temperature, and the shield removed. The material may be heated by eddy currents provided by a coil 6, and the temperature may be controlled by a thermocouple. The shield may be supported by a glass chimney 7 and it may be moved magnetically. The substrate may be the faceplate 2 of an electron discharge device.
Patent GB-1369554-A (GB)
Title: Fluid operated mechanism
IPC: F15B21/02
Filed: 1972-09-28
Abstract: 1369554 Fluid-pressure apparatus J W KICE R W KICE and J V KICE [trading as K-B ENG CO] 28 Sept 1972 44901/72 Headings F1A and F1P [Also in Division F2] A mechanism for effecting the sequential operation of other devices comprises a pneumatic actuator 16, Fig.1, controlled by a valve 20, which rotates a disc 108 of a valve 22 to bring a port 128 successively into alignment with a series of fixed ports 120, Fig. 5, in a fixed plate 106 of the valve 22. Rotation of the disc 108 is by a member 134, Fig.1 pivoted to a piston rod 90, which engages projections 130 on the disc. The rod 90 carries a member 88 which by covering and uncovering ports 94, 96 causes a spool of valve 20 to shift, thereby controlling reciprocation of the piston 50. In one application of the mechanism described valves 134, Fig.6, are sequentially opened by lines 125 to release the air in a reservoir 137 into a series of filter-bags in an assembly 132. The reservoir is exhausted each time a valve is opened and is re-charged by a compressor. As the pressure rises a valve 104, Fig.1, opens when a pre-set pressure is reached. Air now passes from the line 100 through a line 66 to the valve 20 and subsequently to the actuator 16 where it moves the piston 50 to the left. This causes the orifice 96 to be opened and orifice 94 to be closed by projection 88, thereby moving the spool of valve 20 and allowing piston 50 to move back to the right. In so doing the port 128 is moved to open one of the lines 125 to atmosphere thereby causing one of valves 134 to exhaust the reservoir 137. The piston carries out another cycle when the pressure rises again in the reservoir 137.
Patent GB-1394256-A (GB)
Title: Composite paper-backed fabric
IPC: D06N7/00
Filed: 1972-09-29
Abstract: 1394256 Paper backed fabric laminates TORAY INDUSTRIES Inc 29 Sept 1972 44949/72 Heading B5N A process for the preparation of a composite paper backed fabric comprises distributing a thermoplastics adhesive material evenly between a fabric and a backing paper to form spaced portions of the material raised above the surface of the backing paper, applying heat and pressure at a temperature higher than the meltting point of the adhesive material but below any softening or melting point of a polymer forming the fabric to bond the spaced apart portions more strongly to the paper than to the fabric but sufficiently weakly to the fabric to permit the backing paper and adhesive material to be peeled from the fabric. The thermoplastic material which may be of polyethylene, an ethylene/vinyl acetate copolymer, nylon 6/66/610, nylon 6/66/610/12 or a polyester derived from terephthalic acid, adipic acid and/or isophthalic acid and ethylene glycol and/or butanediol may be applied in the form of a net which may be formed of a knitted or woven fibre or made by embossing one or both surfaces of a film and drawing the film biaxially. Alternatively, the thermoplastic material may be applied as a powder or as a non-woven fabric. Specified fabrics are nylon taffeta, polyester taffeta, a mixed polyester-cotton fabric or rayon satin. The backing paper may be of any type, e.g. draft paper, kraft paper or Manila board. Bonding may be effected using a heated press or belt-cylinder combination. The fabric of the composite may be ink printed, e.g. by gravure, offset or relief printing or dye printed, e.g. by machine. Many suitable uses for the printed fabric are listed.
Patent GB-1133705-A (GB)
Title: Post-aerated gas jets
Inventor: HANCOCK JOHN
IPC: F23D99/00
Filed: 1965-10-26
Abstract: 1,133,705. Gas burners. GEO. BRAY & CO. Ltd. 11 Oct., 1966 [26 Oct., 1965], No. 45330/65. Heading F4T. A non-atmospheric gas burner jet has two parallel rectangular slot orifices 2 on either side of which are shoulders 4 which cause the gas to emerge from the slots as two fan-shaped streams which coalesce on ignition to form a single flame.
Patent GB-1079028-A (GB)
Title: Improvements in anti-theft systems
IPC: B60R25/10
Filed: 1964-11-06
Abstract: 1,079,028. Theft alarms. ELECTRO-PRECISION S.A. Nov. 6, 1964 [Nov. 8, 1963; Oct. 27, 1964], No. 45346/64. Heading G4N. A theft alarm, e.g. for a vehicle comprises a relay RT3 connected in series with an alarm detector D1 and a parallel arrangement of three further relays RT1, R2, RT2 so arranged that RT1 operates first. On leaving the vehicle a concealed switch (not shown) is actuated to connect terminal 6 to the battery and thermal relay RT3 starts to heat up, the delay time before contacts RT31 dose being sufficient to allow the driver to leave the vehicle via the door including alarm detector D1. Once contacts RT31 have closed subsequent closure of detector contacts D1, by opening the door, energize relay R1 to close self-hold contacts R11. Thermal relay RT1 starts to heat via its winding a and after a sufficient delay to allow an authorized person to immobilize the alarm, contacts RT11 close, de-energizing relay R1 and energizing relay R2 to close alarm contacts R21, R22, R23 and selfhold contact R24. Thermal relay RT2 also starts to heat and after a delay time contacts RT21 close, releasing relay R2. RT2 now cools until it contacts RT21 open, relay R2 reoperates and the cycle repeats. After a much longer delay period relay RT1 is released by the heater winding b and the whole system is switched off. If the detector originally set off does not return to normal the system starts up again to repeat the cycle. Other detectors e.g. D2 are connected so as to actuate relay R2 directly without any delay. In a modification, Fig. 2 (not shown), detector (D1) is connected to terminal (1) via a resistor, detector (D2) is directly connected to terminal (1), and a further resistor is included in lead (16). Instead of a winding (b) resistor (RA) may provide the heat to release relay (RT1) directly.
Patent GB-1048796-A (GB)
Title: Improvements in folding box machines
IPC: B65B59/02
Filed: 1965-10-27
Abstract: 1,048,796. Packaging; endless conveyers. KLIKLOK CORPORATION. Oct. 27, 1965 [Nov. 3, 1964], No. 45391/65. Headings B8A and B8C. [Also in Division F2] An apparatus for closing hinged lidded filled cartons has a pair of endless conveyer chains 13, 14 each driven at the same speed, one within the other. The cartons enter the apparatus with their lids 19, Fig. 2 (not shown), open, being pushed forwards into the apparatus by abutments 25, Fig. 4 (not shown), on a conveyer 20. At a position B2, Fig. 2 (not shown), the lids 19 are engaged by a belt 22 inclined to the conveyer 20 which moves at the same speed as the cartons, and folds each lid on to its carton. The leading edge of the carton is then engaged by an L-shaped element 15, Fig. 1, fixed on the outer conveyer 13. This element 15 folds the leading side flap 27, Fig. 3 (not shown), of the lid down against the side of the carton. Another L-shaped element 16 on the inner conveyer 14 then engages the trailing edge of the carton and folds a flap 29 down against the carton. The L-shaped elements 15, 16 are arched so as to reduce bowing of the flaps 27, 29. The abutments 25, Fig. 4 (not shown), on the input feed conveyer 20, are then withdrawn, and the pair of L-shaped elements 15, 16 convey the carton through apparatus. Glue tabs 30, 31, Fig. 3 (not shown), on the carton, are folded inwards against the face of the carton by a fixed guide 38, and a reciprocating finger 44 respectively. A starwheel adhesive applier 48, Fig. 7 (not shown), fixed above an electrically heated glue bath 49, applies four spots of glue on to the underside of the carton front flap 28. The flap 28, Fig. 7 (not shown), is then folded downwards against the carton by folder blades 51, 52. The carton is then disengaged from the elements 15, 16 and moved away by a conveyer 56, Fig. 8 (not shown). The apparatus is adjustable for various sizes of cartons. The glue applier star wheel 48 can be replaced by a different size applier 148, Fig. 7 (not shown). The height and width of the track 26, Fig. 8 (not shown), on which the cartons move can be varied by means of a hand wheel 61, and by adjusting the position of a plate 64. The apparatus is operated in time relationship with the filling and loading conveyer 20. The driving power is supplied from a shaft 67, Fig. 9 (not shown), through a chain drive 69 to a main drive shaft 71. The shaft 71 drives the conveyers 13, 14 through sprocket and chain arrangements. The shaft 71 drives to a normally locked differential 79 &c., Fig. 10 (not shown), through a chain 76 also driving directly to the conveyer 14. The locked differential drives through another parallel chain 82 &c., to the conveyer 13. By manual release and rotation of the normally locked differential 78, angular adjustment between the two parallel chain drives is effected to vary the spacing between the L- shaped elements 15, 16 so as to accept cartons of different lengths.