baber/WOPTO huggingface dataset:
Patent GB-1328651-A (GB)
Title: Centrifugal governors
IPC: F02D1/10
Filed: 1970-10-30
Abstract: 1328651 Speed governor ROBERT BOSCH GmbH 30 Oct 1970 [31 Oct 1969] 51628/70 Heading G3B A centrifugal governor for an internal combustion engine fitted with a fuel injection system comprises a fuel control rod 32 urged to the left (starting position) by a spring 35 via a fulcrum lever 22 pivoted at 26, a tensioning lever 37 carrying a pair of stops 49, 51, and a rocker lever 27 pivotally mounted on the fulcrum lever 22 at 28 and urged by a spring 29 to contact a sleeve 15 via a roller 21. The sleeve 15 moves to the right with increasing rotational speed of the shaft 10 until one of the stop-engaging surfaces 53, 57 contacts a respective stop. The stops are adjustable to give the following fuel/speed characteristics: (a) delivery quantity increasing with increasing engine speed. The stop 49 comes into contact with the face 53 after a distance "C" covered by the sleeve 15, thereafter the spring 56 is compressed as the fulcrum lever 22 pivots on the stop 49. (b) delivery quantity decreasing with increasing engine speed. The stop 49 is reset so that it has no effect . (c) delivery quantity first decreasing and then increasing with increasing speed. In the embodiment of Fig.2 (not shown) the governor may be set so that the delivery quantity first increases and then decreases with increasing engine speed. The embodiment of Fig.3 (not shown) can achieve any of the aforementioned adaptations.
Patent GB-1086555-A (GB)
Title: Electrical devices with bodies of crystalline material
Inventor: REMEIKA JOSEPH PETER
IPC: C09K11/62
Filed: 1964-12-21
Abstract: Crystals of lithium metagallate (LiGaO2) are stated to exhibit a long-lived green phosphorescence after exposure to long-wave ultraviolet radiation when prepared by crystal pulling in air from a melt enriched with respect to gallium above the 1:1-stoichiometric ratio.ALSO:Crystals of lithium metagallate (LiGaO2) are prepared either by melt growth or by flux growth in either case with or without seeding. The starting materials are preferably lithium carbonate and gallium oxide in the stoichiometric 1:1 mol. ratio, e.g. 2.77 gms. lithium carbonate and 7.03 gms. gallium oxide may be used with a flux consisting of 2 gms. boron oxide and 25 gms. lead oxide.  The ratios are based upon total solution at 1300 DEG  C. and a cooling rate of between 1/2  DEG  and 5 DEG  C. is used, the crystals being removed by leaching with acetic acid when the flux is solid.  Materials such as chromium, cobalt, manganese and nickel in amounts less than 1% by weight may be introduced during flux growth. Crystal pulling by the Czochralski method may be used.  Loss of gallium due to volatalization may be avoided by periodic additions of lithium to the melt.
Patent GB-1166874-A (GB)
Title: Epoxy Resin Insulations
IPC: C08G59/22
Filed: 1967-11-15
Abstract: 1,166,874. Coated mica paper. GENERAL ELECTRIC CO. 15 Nov., 1967 [20 Dec., 1966], No. 52003/67. Heading B2E. [Also in Divisions B5 and C3] Mica paper for use in electrical insulating materials is impregnated with a composition comprising: (a) bis (2, 3-epoxycyclopentyl) ether; (b) another poly-1, 2-epoxide; and (c) a resorcinol/formaldehyde condensate as a hardener which may be present so as to provide 0.6 to 1.2 hydroxyl groups per epoxy group. The ratio of (a): (b) may vary from 70:30 to 30:70. Tape produced may have a reinforced backing. e.g. of glass cloth or a polyethylene terephthalate fabric. (see Division B5).
Patent GB-1525809-A (GB)
Title: Method and apparatus for gaseous reduction of metal ores
IPC: C22B23/02
Filed: 1976-12-15
Abstract: 1525809 Automatic control FIERRO ESPONJA SA 15 Dec 1976 [5 Jan 1976] 52393/76 Heading G3N [Also in Division C7] In a method of producing sponge metal from oxidic ore by gaseous reduction in a vertical moving bed reactor, a heated reducing gas from a source is passed through the ore in a reducing zone, and the effluent gas is cooled to de-water it. The compositions and flows of both the reducing and effluent gases are measured, and the measurements are co-related with the rate of sponge metal delivery to determine the per cent reduction of the ore in the reducing zone. A shaft reactor 10 comprising a reducing zone 12 and cooling zone 14 is charged through pipe 16 with ore. The sponge metal is removed after processing through pipe 18 and controllable discharge valve 20. Reducing gas, generated in a reformer 30 is de-watered in cooler 42 and fed, via heater 48 where it is heated to 8-1100C, to the bottom of reduction zone 12 where it contacts the downwardly moving ore. The effluent gases removed from reactor 10 by pipe 52 are quench cooled in cooler 54 and fed back to the input of the reactor in a closed loop. Part of the gases are removed via pipe 60 for use as a fuel gas or for storage. The cooling zone 14 of reactor 10 into which the sponge metal falls is cooled by a gas, which may be reducing, and is recirculated through pipes 66, 70, 64, and pump 62. The ore-reducing gas is analyzed for flow and composition at point 'a' of the circuit i.e. before passing into the reactor, and the effluent gases are similarly analyzed either at point 'b' or point 'c' the data from both analyzes being fed to a computer 80, wherein the data are co-related with the rate of discharge of the sponge metal at 20 and the reducible oxygen content of the ore to determine the per cent reduction in the reactor, which may be used to either manually or automatically control the output from the reactor to maintain the reduction at a desired level. In a modification, air or oxygen may be admixed with the reducing gas prior to entering the reactor. The process is described in mathematical terms, and may be applied to iron, nickel, Cu, or Sn ores.
Patent GB-1407436-A (GB)
Title: Process for preparing fine-grain silver halide emulsions
IPC: G03C1/09
Filed: 1972-11-14
Abstract: 1407436 Photographic silver halide emulsions AGFA-GEVAERT 14 Nov 1972 [9 Dec 1971] 52628/72 Heading G2C Photographic silver halide Lippmann emulsions of grain size less than 100nm are made by precipitating the silver halide in an aqueous hydrophilic colloid medium in the presence of a compound of the formula:- and/or the isomeric compound of the formula:-
Patent GB-1472268-A (GB)
Title: Bearings
IPC: F16C33/46
Filed: 1974-12-05
Abstract: 1472268 Rolling bearings POST OFFICE 5 Dec 1974 [6 Dec 1973] 52748/74 Heading F2A The retainer 20 for the elements of a rolling element bearing interposed between relatively rotatable parts 10, 12 is provided with a ring 22 of magnetic material, e.g. steel, which cooperates with a permanent magnet 24 mounted on the part 12, whereby a magnetic biasing load is imposed on the retainer to suppress instabilities that may arise in operation. In a modification, a flat annular ring is attached, e.g. by adhesive, to the upper surface of the retainer and the magnetic force is applied axially instead of radially. An electromagnet may replace the permanent magnet 24. The positions of the magnet and the ring may be interchanged.
Patent GB-1448197-A (GB)
Title: Arrester gear
IPC: B64F1/02
Filed: 1972-11-16
Abstract: 1448197 Arresting aircraft DEFENCE SECRETARY OF STATE FOR 14 Nov 1973 [16 Nov 1972] 52892/72 Heading B7G An aircraft arrester net comprises in the direction of motion of an aircraft relative to the net a succession of sub-nets, the vertical arrestor members of some sub-nets being more widely spaced than the vertical members of other sub-nets and all of the vertical members of one sub-net being staggered transverse to said direction of motion with respect to the adjoining members of adjacent sub-nets. Each sub-net comprises a top transverse member 30, a similar bottom member 31 and a plurality of spaced vertical members connected to members 30 and 31, these being connected at 32 to a common purchase member 38 which is connected to an energy absorbing device, not shown. Each sub-net is braced by ties 41 and 42 connected to member 30 by frangible ties 34, 35 and collectively connected to a stanchion 40 by a tie 44 which incorporates a break unit 43. The subnets are linked in said direction of motion by frangible ties 37 and connected to the runway by frangible ties 39.
Patent GB-1334372-A (GB)
Title: Melt-metallurgical process
IPC: C21C5/52
Filed: 1970-11-06
Abstract: 1334372 Alloying and purifying metal melts E STEINMETZ 6 Nov 1970 [8 Nov 1969] 53035/70 Heading C7D In a process for countercurrent flow of metal melt and slag (which term includes slag, stone or speiss) phases for transfer of element(s), under the influence of a chemical potential which varies from one end of the contact zone to the other, at least one of the phases is subjected to a force (other than gravity) in the direction of flow thereof, chemical potential creating elements are included at the slag and/or metal inlet ends, mixing within at least one of the phases is substantially limited, a position of max. concentration of the transferred element in the phase to which it is transferred is determined and a part of the enriched phase is removed at, or near said max. The chemical potential gradient may be varied along the flow path by addition of oxidizing and/or reducing agents. The force may be provided by a screw drive or by induction. In the production of ferro-alloys the metal melt may contain P, Si, Al, Mn or C as reductants the slag phase containing the elements in which the melt is to be enriched (e.g. P, V, Cr or Mn), in oxide or sulphide form. Apparatus: - Fig.4a shows metal melt (12) confined and driven forward in a helical trough (19) in countercurrent contact with slag phase (11) moved by helical confinements (20). A slow rate of rotation avoids mixing in the phases along the flow path. It is possible to use further apparatus in series. Enriched metal may be withdrawn through siphon (13), Fig.4b, Fig. 5 shows the metal melt conveyed uphill by induction of coils (22), the slag flowing down by gravity.
Patent GB-1413293-A (GB)
Title: Spacer and or damper for electrical conductors
IPC: H02G7/12
Filed: 1972-11-21
Abstract: 1413293 Vibration dampers for cables GOULD Inc 21 Nov 1972 [14 Aug 1972] 53646/72 Heading F2S [Also in Division H2] Device for spacing and damping conductors, Fig. 2, or for supporting and damping a single conductor, Fig. 3, comprises one or more shafts 10 each having a clamp 12 to take a conductor, a body 19 or 20 forming at least one cavity 16, such cavity being generally cylindrical and having a rib 28 in its central portion forming a restriction, a concave portion 36a, 36b, 36c on shaft 10 and a generally tubular, radially compressed, elastomeric member 38 between rib 28 and the concave portion of the shaft. The end of shaft 10 within the cavity has a flange 34 of larger diameter than the constriction formed by rib 28 so that the shaft cannot leave the body should the elastomeric body 38 fail. To enable the shaft to be assembled in body 19 or 20 the body comprises a number of members which can be assembled around the elastomeric member mounted on its shaft. A further rib 30 is formed about the mouth of chamber 16 to limit the "conical" movement of shaft 10. An elastomeric member 14 is provided in each clamp.
Patent GB-1218669-A (GB)
Title: Method for making sliding clasp fasteners
Inventor: SOHR HANS-ULRICH
IPC: B29D5/00
Filed: 1968-11-21
Abstract: 1,218,669. Seaming non-metallic sheet material. H.-U. SOHR. 21 Nov., 1968 [21 Nov., 1967], No. 55399/68. Heading B5K. [Also in Division E2] A method of making sliding clasp fasteners having interlocking wire helices comprises heating helical wires of thermoplastics material to a first temperature ensuring their approximate dimensional stability, sewing the stable helical wires to stringer tapes made of synthetic fibres by means of a synthetic thread, the synthetic thread and synthetic fibres being of thermoplastics material and finally heating the resultant fasteners at a temperature near but below the softening temperature of the or at least one of the thermoplastics material. The helical wires sewn to two stringers may be interlocked before the second heating operation. In one embodiment the same thermoplastics material, e.g. a polyamide or polyester, is used for the thread, wires and stringers. In alternatives, the stringers are made of a thermoplastics material having a higher melting temperature than the thermoplastics material of the wires and thread, and the stringers can be heated to the first temperature before the helical wires are sewn on. During the second heating operation, the convolutions of the wires shrink, the wires thicken, the thread shrinks and thickens, and the stringers shrink and thicken thus forming a strong anchorage of the helical wires to the stringers. Also the clearance between adjacent interengaging locking members is reduced to obtain better interlocking. The second heating operation may be carried out either in dry conditions, e.g. by high-frequency, hot air or laser beams, or in moist conditions e.g. in or above a bath of high-temperature liquids, e.g. liquid salt or metal, which liquid is soluble in water. Nylon may also be used for the thread and stringers. Reference has been directed by the Comptroller to Specification 997,612.
Patent GB-1403528-A (GB)
Title: Control valve assembly
IPC: F16K11/07
Filed: 1971-11-30
Abstract: 1403528 Blasting B E HART 14 Nov 1972 [30 Nov 1971] 55627/71 Heading B3D [Also in Division F2] A control valve assembly 1, having a supply line 4, an exhaust line 12 and an outlet line 15 to an abrasive-blasting apparatus, has a flow directing valve member 17 formed with surfaces 18 and 19 which are engageable with, respectively, seat members 9 and 7. The dimensioning of the valve member is such that fluid within inlet chamber 5 tends to bias the valve member 17 into engagement with seat 9. Such bias may be augmented by a spring 28. Movement of the valve member into engagement with seat 7 is effected by way of lever 26, which by way of stop 25, acts on the valve member stem 29. The inlet and outlet chambers 5 and 13 and the seats 7 and 9 are defined by cylindrical members 20 and spacers 31, 21 and 22, all being held together by a screw-threaded insert 24. The assembly may include a hand guard 30. The line 4 may be connected to a high-pressure water-pump and the line 15 to the nozzle of the apparatus. In a second embodiment, the line 4 is normal to the axis of the valve and to the outlet and return lines. The outlet line is connected by a flexible hose to a supply of sand or grit and water while the return line forms a low pressure jet to clean sand off the workpiece. A tapered portion of hardened steel, ceramic or tungsten carbide creates a reduced pressure in the outlet line to draw abrasive moisture through the flexible hose.
Patent GB-1368818-A (GB)
Title: Adjusting member for regulating the light range of vehicle headlamps
IPC: B60Q1/115
Filed: 1971-12-02
Abstract: 1368818 Adjusting vehicle headlamps ROBERT BOSCH GmbH 2 Dec 1971 [3 Dec 1970] 55886/71 Heading F4R [Also in Division G1] A device for regulating the range of a beam of a vehicle headlamp comprises a heating coil 16 wound on the outside of a cylinder 10 which is of aluminium or an aluminium alloy and provided with an outer layer of insulating material. The insulating layer is an oxide and preferably 20 Á thick. The heating coil 16 may be welded at its ends to projections 14 of brass collars 12 which are insulated by strips (15) from the cylinder 10 and are pressed by clips 19 towards the cylinder, the projections 14 defining tongues which receive push-on connectors 23 attached to electric cables 24. In use, electric current when supplied to the cables causes the coil 16 to heat the cylinder 10 and an expansible material therein which causes movement of a piston 22 to regulate the headlamp. A spring may be provided to return the piston 22 when the electric supply is cut-off.
Patent GB-1447287-A (GB)
Title: Attachment of thin lead wires to connecting elements of electrical  components
IPC: B23K31/02
Filed: 1973-12-03
Abstract: 1447287 Welding by fusion; soldering SIEMENS AG 3 Dec 1973 [10 Jan 1973] 55955/73 Heading B3R In joining a thin insulated wire having an overall diameter of less than 0À3 mm. (e.g. 0À03 mm.) to a connecting pin (e.g. 0À6 mm. diameter) or tag embedded in an electrical component, e.g. a relay coil, the pin or tag is precoated with tin or solder, advantageously before it is embedded in the component, the wire is wound around the free end of the pin or tag, and a TIG or inert-gas-shielded plasma arc is struck, with the distance between the tip of a welding electrode and the extremity of said free end being less than 3 mm., preferably 0À5 mm., for a maximum period of 0À75 sec., preferably 0À5 sec., whereby the wire is welded to the extremity of said pin or tag free end forming a weld bead, and the tin or solder coating is melted and the wire insulation at least partly burnt off, so that, on cooling, tin or solder adheres to both a portion of the wire winding adjacent the weld bead, at least at a plurality of points, and to the pin or tag, thereby providing an anchor for the wire adjacent the weld bead.
Patent GB-1368145-A (GB)
Title: Capacitive transducer
IPC: G01B7/16
Filed: 1972-12-04
Abstract: 1368145 Capacitive transducers CAPE ENG CO Ltd 4 Dec 1972 [3 Dec 1971] 56153/71 Heading G1N A capacitive transducer has a pair of members 4, 5 respectively provided with a plurality of concentric, part-cylindrical vanes 22, 23 so arranged that relative angular movement of the members 4, 5 varies the overlap of the vanes to vary the capacitance directly with angular displacement. Interleaving cylindrical vanes 7, 8 are also provided on the members to provide a capacitance directly related to linear displacement in the axial direction. The vanes 7, 22 of the member 4 are electrically connected to earth while the vanes 8, 23 of the member 5 are insulated from each other and are connected to capacitive measuring equipment. The transducer is preferably made of stainless steel with ceramic insulating means. Angular movement of a shaft 10 under torsional loading and axial movement between the ends of the shaft 10 under axial loading may be tested.
Patent GB-1184269-A (GB)
Title: A Self-Locking Threaded Fastener
Inventor: SCHEFFER HARRY
IPC: F16B39/36
Filed: 1968-11-27
Abstract: 1,184,269. Lock nuts. H. RIEKE. 27 Nov., 1968, No. 56317/68. Heading F2H. A lock-nut or bolt comprising a bearing face 3 is provided with a sealing ring 5 of resilient material accommodated partly within an annular recess, the sealing ring 5 being urged partly into further recesses 10 in the fastener when the fastener is secured to a co-operating fastener. The fastener may comprise a brass or steel body portion 1 having a hexagonal crosssection and a cylindrical collar extension 2 which defines the bearing face 3. The sealing ring 5 which may be of polyamide resin or of natural or synthetic rubber may be bonded to the annular recess which has a flat bottom wall 4 and a curved side wall 6, the ring 5 being provided with a thread 9 of same pitch and diameter in the relaxed condition of the ring 5 as a thread 8 extending through the body portion 1. The further recesses 10 may comprise a plurality of grooves extending radially of the annular recess and being spaced circumferentially thereof.
Patent GB-1285279-A (GB)
Title: Reproducing apparatus
Inventor: HARR JEROME DANFORTH
IPC: G11B27/024
Filed: 1970-11-26
Abstract: 1285279 Oblique track recording and reproducing apparatus INTERNATIONAL BUSINESS MACHINES CORP 26 Nov 1970 [17 Dec 1969] 56355/70 Heading G5R Oblique tracks (Fig. 2) on a record are identified by data stored in a longitudinal address track A. In the system shown in Fig. 1, pulses J, K from a generating arrangement 15, 16, 17, 18, 19 periodically operate a switching arrangement F 11 , 64, C 1 , C 2 , C 3  to switch the outputs of rotary heads 1, 2 between an address read channel 20 and associated frame access circuitry C (not detailed), and a video read channel 66, the arrangement being such that whilst one head is traversing the address part A of the oblique tracks the other head is traversing the remaining video part of the oblique tracks. Address data is written on the record 14 by a skewed stationary head 39 which is fed from an address write channel 30 including a counter C31, an AND bank 37 1-n , a shift register R31, a clock 33, and a frequency shift keyer modulator 35. The J, K pulses are also fed to this address write channel 30, to the video write channel 60, 61, S 2 , and to a servo 50 whose output is fed to an eddy current brake arrangement 57 to adjust the heads' speed for synchronization purposes.
Patent GB-1404964-A (GB)
Title: Airfelt diaper with short fibre material in the pinning area
IPC: A61F13/56
Filed: 1972-12-07
Abstract: 1404964 Diapers PROCTER & GAMBLE CO 7 Dec 1972 [9 Dec 1971] 56622/72 Heading A5R [Also in Division B5] A diaper comprises an absorbent body 13 of non-bonded fibres contained between a superposed top sheet 14 and a web 18 which has substantial wet strength, the fibres in the areas 15, 16 of the diaper which receive pins to hold the diaper in its operative position, having an average length of 0.5 mm to 0.9 mm. The absorbent body 13 may be an airfelt and the top sheet 14 is a porous non- woven material. The web 18 may be of creped tissue. A thin flexible back sheet 17 of waterproof material may be provided.
Patent GB-1358366-A (GB)
Title: Treatment of contaminated waste water
IPC: C02F1/52
Filed: 1972-12-08
Abstract: 1358366 Purifying waste waters HAVILAND PRODUCTS CO 8 Dec 1972 56688/72 Heading C1C A process for removing one or more soluble metal contaminants from waste water comprises adding one or more precipitating agents to the waste water to precipitate the contaminants to form an aqueous metal compound sludge, allowing the sludge to settle, separating the sludge from the supernatant liquid, transferring the aqueous metal compound sludge to a centrifuge operating on a continuous basis, and concentrating the sludge by centrifugation conducted at a force of at least 800 gravities. A coagulating agent, e.g. an electrolyte, may be added to the water prior to centrifugation. The process may be applicable to waste waters derived from electroplating, electropolishing, anodizing, Zn, Fe or Mn phosphating, metal/paint stripping, acid pickling and cleaning, tumble finishing and deburring and wet blasting. The contaminants may contain one or more of Al, Cd, Cu, Cr, Fe, Mn, Hg, Pb, Ni, Ag, Sn and Zn. Once the sludge has been removed from the centrifuge, the metal may be recovered from this sludge by e.g. electrolysis. Alternatively, the sludge may be dissolved in a suitable liquid, and recrystallized therefrom. Suitable precipitating agents are sodium hydroxide, calcium hydroxide and sodium carbonate.
Patent GB-1126546-A (GB)
Title: Process for the purification of moderator water in nuclear reactors
Inventor: DOLLE LUCIEN
IPC: B01J39/00
Filed: 1966-12-21
Abstract: 1,126,546. Light and heavy water purification. COMMISSARIAT A L'ENERGIE ATOMIQUE. 21 Dec., 1966 [30 Dec., 1965], No. 57223/66. Heading C1A. [Also in Division G6] Light or heavy water used as a moderator in a nuclear reactor is purified by adding a strong acid to dissolve suspended aluminium compound and then contacting the solution with anionic and cationic ion exchangers. A suitable strong acid is hydrofluoric acid or phosphoric acid. When heavy water moderator is treated, the acid may be formed by mixing a solution of sodium fluoride in heavy water with the moderator, passing the mixture through a deuterated cationic exchanger, and heating for a short period before passing the solution through a mixed bed of deuterated anionic and cationic exchange resins. Alternatively, a solution of the salt in heavy water may first be passed through the cationic exchanger to form the acid and then added to the heavy water moderator.