baber/WOPTO huggingface dataset:
Patent GB-1454611-A (GB)
Title: Electrical control devices for vehicles
IPC: G05D1/02
Filed: 1974-01-23
Abstract: 1454611 Automatic control of steering ROBERT BOSCH GmbH 23 Jan 1974 [24 Jan 1973] 03084/74 Heading G3R A system for automatically steering a vehicle so as to follow a guide conductor 12 carrying A.C. comprises two pick-up coils 10, 11 on the front of the vehicle connected to means for adjusting the steering via circuits which automatically vary the gain in response to the sum of the signals from the two coils by varying the mark/space ratio of a chopper in the signal path. Signals induced in coil 10 are amplified at 14, chopped at 16, filtered by a low pass filter 20 to remove the chopping frequency (1MHz), further filtered by an active filter 21, rectified at 22, further filtered at 26. Coil 11 is connected to an identical channel 15 ... 27. The outputs of 26 and 27 are subtracted at 29 to produce a course error signal for correcting the steering by means not shown, and added at 28 to form a control signal for the chopping circuit. This comprises a pulse generator 19 which triggers a monostable multi-vibrator 18 whose astable condition depends upon the voltage from 28 and which controls switching transistors in 16 and 17 so that the output of amplifiers 14, 15 is either connected through or to the mid point of a low impedance voltage divider across a D.C. supply. The arrangement is such that the average signal strength of the combined channels is kept constant regardless of varying coil heights, ground conditions &c. Details of the chopper circuit are given Fig. 2 (not shown).
Patent GB-1401085-A (GB)
Title: Acousto-optic filters
IPC: G10K11/00
Filed: 1972-07-21
Abstract: 1401085 Modulating light HEWLETTPACKARD CO 21 July 1972 [10 April 1972] 3147/75 Divided out of 1401083 Heading H4F In a tunable optical filter of the type wherein a portion of a plane polarized optical beam traversing an acoustically anisotropic photoelastic birefringent crystal is diffracted into an orthogonal plane of polarization by an acoustic wave having its group velocity vector collinear with the optical path, and is subsequently filtered out by a polarization analyser, the optical output face of the crystal is substantially normal to the acoustic group velocity vector and at an angle to the phase velocity vector so that on reflection the acoustic energy is reflected out of the optical path and so that the output optical aperture can be of maximum size. As particularly described the crystal may be of quartz, in which the group and phase velocities of a shear wave may diverge by up to 27 degrees, so that undesired acoustic resonances produced on reflection are greatly reduced. In addition the crystal may be coated with an acoustically and optically absorbent material as described more particularly in Specification 1,401,083. The polarization vectors of the input optical and acoustic shear waves are mutually at right angles.
Patent GB-1061972-A (GB)
Title: Improvements in cutter picks for mining machines
Inventor: SYNAC JOSEF
IPC: E21C35/19
Filed: 1963-01-25
Abstract: 1,061,972. Cutter picks; dust suppression means. COAL INDUSTRY (PATENTS) Ltd. Jan. 17, 1964 [Jan. 25, 1963], No. 3220/63. Heading E1F.  Sealing means are associated with the shank of a cutter pick to establish a watertight seal beween the shank, which has a section bounded by a closed curve - preferably a circle, on a complementarily shaped wall of a shank-receiving opening in a pick holder so that dust suppression fluid entering the opening passes up a passage in the shank to emerge from nozzle means on to the cutting face of the pick.
Patent GB-956290-A (GB)
Title: Improvements in electric socket contacts
IPC: H01R13/11
Filed: 1961-01-27
Abstract: 956,290. Two-part couplings. SEALECTRO CORPORATION, and S. T. DEAKIN. Jan. 18, 1962 [Jan. 27, 1961], No. 3276/61. Heading H2E. In a socket, a contact element 20, Fig. 1, is held within a deformable plastics sleeve 10, the sleeve being installed in a metal plate 16, one of the rings 25, 26 providing support for the sleeve. The sleeve is pushed through the plate and held in place by a flange 12 and step 18. A sheet metal blank, Fig. 11, is bent to provide contacts 23, a joining strip 24, and a connecting tag 30. In modifications, Fig. 9 and 10 (not shown), the sleeves are inserted downwardly or upwardly respectively, and the ring 26 are effective to provide the support. In a further modification, Fig. 6 (not shown), the reinforcing ring is separate from the contact.
Patent GB-852432-A (GB)
Title: Emulsifiable polypropylene waxes and their preparation
IPC: C08F8/06
Filed: 1958-02-03
Abstract: Emulsifiable oxidised polypropylene waxes having molecular weights from 1,000 to 8,000, ASTM ball and ring softening points of at least 130 DEG C. and acid numbers 2 to 20 are prepared by reacting a non-emulsifiable polypropylene wax of above molecular weight and softening point, a density of at least 0,90 and a zero acid number with oxygen at 100-200 DEG C. until the product has an acid number of 2-20.  The oxygen may be supplied by air, hydrogen peroxide or an organic peroxide while an alkali metal carbonate, e.g. sodium carbonate and other natural or synthetic waxes may also be present. The reaction mixture may be extracted with a solvent or may be heated under vacuum after the oxidation process.  Specification 852,431 is referred to.
Patent GB-231435-A (GB)
Title: Air cleaning materials and processes of making the same
IPC: B01D46/10
Filed: 1925-02-06
Abstract: 231,435. Reed Air Filter Co., (Assignees of Hegan, C. P.). March 27, 1924, [Convention date]. Coating by dipping. - A filter mass is formed of metal wool the fibres of which are coated and bonded together by a metallic coating. The filter mass may have a progressively increasing density towards one side. The mass may be comprised in an open frame having foraminous sheets at the inlet and outlet; the sheets may support the mass during the coating. The coating plant' comprises an overhead traveller 14 which conveys the filter cells to be coated from pickling vats to the flux tank 4 arid handles them during the coating process. From the flux tank they are passed into a tank 5 of molten metal or alloy, for example lead antimony alloy containing 6 per cent antimony. They are then placed on an inclined shoot 15 from which excess metal drops to an incline 16 which returns it to the tank. From the incline they pass to a grating 6 on a frame 7 shaken by cams 8 and situated in an oven through which the combustion products from the tank beaters pass. Excess metal falls into a, pin 17 in the oven. The grating is tilted to discharge the plates into a hot-water tank 9 where they are cooled and rinsed. The metal drains most freely from the upper, inlet, side of the cell leaving the lower fibres packed more tightly. The excess metal may alternatively be removed by superheated air or immersion in a bath of heated oil.
Patent GB-1453799-A (GB)
Title: Vapour generators
IPC: F22B1/02
Filed: 1974-01-24
Abstract: 1453799 Vapour generators SIEMENS AG 24 Jan 1974 [26 Jan 1973] 03423/74 Heading F4A A steam generator comprises a bundle of heat exchange tubes 3 enclosed by a shell 6, a preheater 15 connected to a main feed line 22, and an auxiliary feed line 28 with a pump 30 operable to supply the preheater with additional, heated water from a downspace 8 within housing 10. When the steam generator is operated under partial load the risk of premature boiling within the preheater is increased. This risk is reduced by actuating pump 30 to move the heated water from downspace 8 with the cold feed water of line 22. This mixing increases the quantity of feed water together with a simultaneous increase in the temperature of the feed water, the latter diminishing the thermal transmission within the preheater. Specification 58978/73 is referred to. Reference has been directed by the Comptroller to Specification 1,341,934.
Patent GB-668945-A (GB)
Title: Improvements in grinders for rock drills
IPC: B24B3/33
Filed: 1950-02-10
Abstract: 668,945. Grinding rock drills. AKTIEBOLAGET KRISTENSON & GRAHS. Feb. 10, 1950 [March 11, 1949], No. 3475/50. Class 60. A grinder for chisel-shaped rock drills, particularly those of hard metal, having a rotating grinding wheel 22 which is rotatable back and forth about an axis 12-12 forming an acute angle with its axis of rotation 26-26 is characterized in that the axis 12-12 is substantially parallel with and spaced from the drill 35, and in that the grinding disc has a transverse surface to operate on the drill. The grinding wheel, which is preferably of the cup type, is directly driven from a motor connected by bolts 20 to a plate 17. The bolts pass through slots 19 in the plate so that the position of the grinding wheel and the motor may be adjusted to compensate for wear. The plate 17 is mounted on a pendulum arm 14 by bolts 16 which pass through an arcuate slot in the arm to allow the inclination of the axis 26-26 to be adjusted, washers being interposed between the plate 17 and the arm. The latter is formed with a hub 13 journalled through two sleeves 49 on a bearing pin 48 which is clamped to the frame 10 and contains a feed screw 55 provided with a collar 54. This collar is held by a spring 51 and a ball race 53 against a disc 52 secured to the hub so that displacement of the feed screw produced by rotating a hand wheel 59 will cause displacement of the hub along the axis 12-12, the feed screw being prevented from rotating by a spring-loaded friction device 64. The pendulum arm may be oscillated by either of two handles 27, 28. These oscillations cause an intermittent rotation of the feed screw through a spring-loaded ball 66 and ratchet teeth formed on the collar 54 to feed the grinding wheel towards the drill, the hand wheel 59 being prevented from turning by a spring- loaded friction device 68. In order that the drill may engage the grinding wheel on a horizontal diameter, the spring 51 is anchored at both ends so that it is loaded tension ally to displace the axis of the grinding disc from the vertical plane through the axis 12-12. The grinder may be used as an ordinary machine when part of the grinding wheel housing is removed, a rest 33 to support the work and a pin 30 in the handle 28 to hold the grinding wheel in a suitable position with respect to the frame being provided. The clamping jaws for holding the drill may also be made movable in the direction of the drill axis by a feed mechanism similar to that employed for moving the grinding wheel.
Patent GB-1493341-A (GB)
Title: Flow control apparatus
IPC: G01F25/00
Filed: 1976-01-29
Abstract: 1493341 Valves M H GROVE and J M E GROVE [trading as M & J DEVELOPMENT CO] 29 Jan 1976 [12 Feb 1975] 03540/76 Heading F2V In a flow control apparatus having a cylindrical closure element 21, Fig. 2, movable into and out of engagement with an annular sealing assembly 11, the latter comprises a pair of resilient annular seals 28 and means by which it couples two casing sections 10a. 10b together. In an alternative embodiment, Figs. 6 and 7 (not shown), two sealing assemblies (11) and two interconnected cylindrical closure elements (72, 73) for co-operation therewith are provided. The sealing assembly shown is associated with leakage detection means 63. As the element 21 is advanced into engagement with the assembly 11, the limb 31 of the last-engaged seal 28 initially isolates the space 57 between the seals and then flexes away from support 46, whereby a substantial pressure drop is induced in the fluid trapped in the space. The resulting low pressure is communicated from the space through a line 58 to a pressure-actuated switch 59 which also receives a reference pressure via line 60. The switch moves in accordance with the difference between those pressures to energize either a red lamp 61 or a green lamp 62 and thereby provide an indication whether or not leakage is occurring at the sealing assembly.
Patent GB-1022890-A (GB)
Title: Pneumatic conveyor for easily clogging, fibrous agricultural harvested material
Inventor: SCHORER HERMANN
IPC: A01D87/10
Filed: 1963-01-27
Abstract: 1,022,890. Pneumatic conveyers. F. HACKER. Jan. 27, 1965, No. 3625/65. Addition to 984,184. Heading B8A. The pneumatic conveyer according to the parent Specification in which a radial blower is mounted on a vertical axis above an extensible suction pipe, the pressure delivery pipe is directed downwardly at an angle greater than 15 degrees to the horizontal.
Patent GB-1128302-A (GB)
Title: Halogenated pyridazone derivatives and their use as herbicides
IPC: C07D237/22
Filed: 1966-01-27
Abstract: 1,128,302. Pyridazone derivatives. BADISCHE ANILIN- & SODA-FABBIK A.G. 27 Jan., 1966 [5 Feb., 1965], No. 3636/66. Heading C2C. [Also in Division A5] The invention comprises compounds of the general formula wherein R denotes a phenyl radical or a cycloaliphatic radical having 6 to 8 carbon atoms. The compounds are prepared by reacting the appropriate 1 - substituted - 4 - amino - 5 - bromopyridazone-(6) with chloral.
Patent GB-257492-A (GB)
Title: Improvements in die cushioning-devices for metal working presses
IPC: B21K1/22
Filed: 1926-02-09
Abstract: 257,492. Fitzpatrick, H. D., (Marquette Tool & Manufacturing Co.). Feb. 9, 1926. Valves.-Poppet-valve heads &c. are forged in a machine provided with a fluid-pressure cushionsupport for the lower die so that the latter may yield under abnormal strain. The cushion comprises cylinders in which work pistons 29 operating on the lower die through bell-cranks 25.
Patent GB-474278-A (GB)
Title: Improvements in scales for tubular hollow glass measuring instruments such as thermometers and hydrometers
IPC: G01K5/26
Filed: 1937-02-08
Abstract: 474,278. Scales for thermometers, hydrometers, and the like. LOBER, H. Feb. 8, 1937, No. 3736. [Class 97 (iii)] A transparent scale-carrying film 2, e.g. of glass or cellulose acetate, extends half way round and adheres to the inner wall of the tubular glass stem 1. 3 is an enamel layer which may be immediately behind the film 2, as shown, or on the half of the inner wall of the tube not covered by the film 2.
Patent GB-508363-A (GB)
Title: Improvements in speed governors for internal combustion engines
IPC: F02D9/00
Filed: 1939-02-04
Abstract: 508,363. Speed governors. BOSCH GES., R. Feb. 4, 1939, No. 3738. Convention date, Feb. 4, 1938. [Class 57] A throttle valve 2 is mounted in a Venturi in the induction pipe 1 of an internal-combustion engine and pressure between the valve and the engine is conducted to a chamber 17 having a spring-loaded diaphragm 13. The diaphragm 13 carries a sleeve 7 having a projection 8 guided in slots 9 in a sleeve 10, and pins 6 engaging helical grooves 5 in the valve spindle 3. A high vacuum moves the diaphragm and rotates the valve to,closed position. In a modification, pins on the valve spindle engage helical grooves in the sleeve carried by the diaphragm.
Patent GB-1246858-A (GB)
Title: Semiconductor device
IPC: H01L23/051
Filed: 1969-01-23
Abstract: 1,246,858. Semi-conductor devices. MITSUBISHI DENKI K.K. 23 Jan., 1969 [23 Jan., 1968], No. 3763/69. Heading H1K. The silicon PNN+ diode 18 is provided with evaporated and sintered ohmic aluminium contacts 24, 26 and is held in pressure contact between two flat tungsten support plates 34, 38 which may be aluminium faced 36, 40. This assembly is held between metal blocks 56, 70 forming part of a sealed housing also comprising a ceramic ring 52 with iron-cobalt-nickel flanges 58, 62 hard-soldered thereto and a resilient flange 72 argon-arc welded to the flange 62. The resilient flange may supply the necessary contact pressure in the system but external pressure may also be applied. The ohmic contacts may instead consist of other ductile metals, such as gold, silver or nickel; the support plates (which may be faced with the metal of the ohmic contacts) may instead be of molybdenum, tantalum, or iron-cobalt-nickel; the semi-conductor may instead be germanium or an A<SP>III</SP>B<SP>V</SP> compound; the body is strengthened by, e.g., a silicon ring 28 aluminium bonded to the body. Before mounting, the body is peripherally sand-blasted and etched and siliconevarnished. Transistors and thyristors may be similarly mounted.
Patent GB-751979-A (GB)
Title: Improvements in or relating to sealing means for tunnel furnaces
IPC: F27D99/00
Filed: 1954-02-09
Abstract: 751,979. Tunnel kilns. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 9, 1954 [Feb. 12, 1953], No. 3791/54. Class 51(2). A tunnel kiln comprises a concrete foundation 1 carrying longitudinal dwarf walls 2, 3 and sealing troughs 22, 23, side walls comprising removable blocks 12, 13 some of which may carry resistance heating elements 14, 15, a roof 11 secured to a metal frame 10 supported on columns 8, 9 carried by brackets 6, 7 secured in the walls 3, 4, and a sheet aluminium jacket 24 seated on the framework 10 and engaging the troughs 22, 23 to form a gas tight seal. Charge-carrying trucks 19 having a ceramic superstructure 20 run on rails 16, 17 and are guided by ribs 21 engaging a guide rail 18. Air locks 25, are provided at both ends of the tunnel, each air lock comprising vertically movable doors 27, 28 engaging seals 29, 30. The door 27 carries a ram 32 to propel the cars 19, and inert gas, e.g. nitrogen, may be supplied to both the tunnel and the locks. The jacket 24 and locks 25 may be raised by cables 34 for replacement of the blocks 12, 13 or other parts. A flexible construction 33 is provided between the locks 25 and the jacket 24.
Patent GB-1181432-A (GB)
Title: Method for Surface Treatment of Cellular Plastics and Surface Treatment Means for Use in the Execution of the Method
Inventor: ORPES SVEN
IPC: C08J9/36
Filed: 1967-01-26
Abstract: 1,181,432. Fire-proof coatings. ROCKWOOL A.B. 26 Jan., 1967, No. 3886/67. Heading B2K. A cellular polystyrene is coated by adding to a mixture of water and a quantity of liquid water glass, solid water-free water glass in amount of between 10% to 150% by weight of the quantity of liquid water glass, applying a layer of resultant composition to the surface of the cellular plastics material and allowing the layer to set. The liquid water glass may be mixed with a filler before addition of the water-free water glass. The filler may be of fibrous mineral wool, asbestos, quartzite or diatomaceous earth. It may be present in amount of 5 to 80% of the total amount of the water glass. Litharge may be added to the water-free water glass before addition to the liquid water glass. A cellulose derivative may be present such as mono-ethylcellulose.
Patent GB-270802-A (GB)
Title: Improvements in or connected with spinning or twisting frames
IPC: D01H1/04
Filed: 1926-02-11
Abstract: 270,802. Zvorikin, J. Feb. 11, 1926. Spindle apparatus; rollers and roller heads; thread guides. - In spinning and twisting machines a dragged bobbin 25 is freely mounted on a spindle 19 driven by a cord 23, and the flyer comprises a disc 1 with depending arms and is mounted in ball bearings and driven by a cord 11, the yarn passing from the rollers through guides 8 directly to eyes 16 on the ends of the flyer legs or through additional eyes 17, 18, Fig. 3. Springs 27, Fig. 4, engage a groove 26 in the bobbin to maintain it in position, slots 28 being pro vided in the flange of the bobbin to admit them. A ruller 34, mounted on a weighted lever 35 receives and winds up a broken end. Reference has been directed by the Comptroller to Specifications 177,800 and 236,810.
Patent GB-134144-A (GB)
Title: Improvements in Processes for the Manufacture of Acetone and Carbonic Acid.
IPC: C07C45/48
Filed: 1919-02-18
Abstract: 134,144. Soc. Anon. des Acieries et Forges de Firminy. Nov. 16, 1918, [Convention date]. Carbon dioxide.-In preparing acetone and carbon dioxide by passing vapours of acetic acid over a catalyst, manganese dioxide, either precipitated or natural, is used as a catalyst. A mixture of pyrolusite and coke may be used, and may be heated by passage of an electric current or otherwise to 350-450‹ C. Vapours of acetic acid, which may be obtained from acid of 90 per cent. strength, are passed over the catalyst. The catalyst may be revivified by heating in a current of air.
Patent GB-194673-A (GB)
Title: Improved manufacture of small glowlamps
IPC: H01K3/00
Filed: 1923-02-12
Abstract: 194,673. Naamlooze Vennootschap Pope's Metaaldraadlampenfabriek. March 8, 1922, [Convention date]. Leading-in wires.-In making glow lamps, the leading-in wires 4, 5 are sealed into the bulb simultaneously with the making of the joint between the bulb and the exhaust tube 8 by means of a coating of glass 6, 7 which is applied to them at and near the point of sealing before the exhaust tube is sealed to the bulb. The glass layers 6, 7 may be made by slipping pieces of capillary tube over the leading-in wires, with or without a previous coating of a borate on the wires, these tubes being fused on to the wires at the same time as or prior to the fusion of the exhaust tube on to the bulb. The leading-in wires may be made of a composite wire having a core of nickel-iron or tungsten and a jacket of copper or other metal such as to have the same coefficient of expansion as that of the glass.
Patent GB-876878-A (GB)
Title: Improvements in or relating to handling of biscuits and the like
Inventor: MORRISON ROBERT HENRY
IPC: B65B23/12
Filed: 1959-02-05
Abstract: 876,878. Step-by-step conveyers. PACKMAN MACHINERY Ltd. March 3, 1960 [Feb. 5, 1959], No. 4120/59. Class 78 (1). A column of biscuits 20 standing on edge is conveyed over a dead plate 22 by the transverse movement of a flexible biscuit reservoir 23. This reservoir comprises a pair of fixed end sections 27, a curved centre section 28, intermediate sections 31 pivoted at 32 to the sections 27 and intermediate sections 33 pivoted at 34 to the centre section 28. The sections 31, 33 are arranged to telescope. The section 28 is mounted on a carriage 29 movable on guides 30. This carriage is connected by a rod 35 to a pivoted arm 36, Fig. 3, which is oscillated by pneumatic cylinder mechanism 39. The carriage 29, Fig. 4, is attached to a chain 56 which extends around sprockets 57, 58 and is engaged by a sprocket 55. This sprocket is fixed to the friction plate 53 of a friction clutch 52, Fig. 6, which is loose on the shaft 49 and is normally kept in engagement with the other plate 51 of the clutch by a spring 54. The shaft 49 is mounted rotatably in a crosshead 41 carrying rollers 47 which run on a fixed guide 48. A brake drum 50 fast on the shaft co-operates with a shoe 65 which is connected by a pin 64 to a pair of links 62. These links are formed with slots 63, Fig. 5, which embrace the shaft 49 and are connected by a pin 60 movable in slots 61 in the side plates of the crosshead. The pin 60 is carried by a link 59 which is connected to the cam lever 42. Since the clutch 52 is designed to slip at a predetermined load, when the reservoir is not required to feed a complete batch of biscuits, it will slip as soon as the resistance building up in the column of biscuits exceeds this figure. The crosshead 41 will complete its stroke but since the sprocket 55 now rotates on the chain 56, no further movement will be imparted to the carriage. Excessive outward displacement of the guides 28, 33 actuates an overload microswitch 68 to operate a switching gate 67 which diverts the biscuits into a discharge track 69. Switches 70, 71 wired in series control the operation of a stop in the output line of the reservoir which prevents delivery unless both switches are closed. The switch 70 is closed when the reservoir has expanded to an extent corresponding to the addition to its content of a complete batch of biscuits. The switch 71 is closed by a cam 72 at a definite time in the cycle of operation of the wrapping-machine. Specifications 801,564, 863,941 and 873,337 are referred to.