baber/WOPTO huggingface dataset:
Patent GB-826904-A (GB)
Title: Improvements in or relating to automatic grinding machines
IPC: B24B49/04
Filed: 1958-06-11
Abstract: 826,904. Grinding. SVENSKA KULLAGERFABRIKEN A. B. June 11, 1958 (June 15, 1957], No. 18622/58. Class 60. An automatic machine for grinding a cylindrical surface on a workpiece having a bevel between the cylindrical surface and an end face perpendicular thereto and comprising a reciprocating gauge arranged to operate a control element to discontinue the grinding operation is characterised by the provision of a pair of co-operating members movable relatively to each other, one of the members being connected to the gauge and the other of the members being arranged to actuate the control element, the relative positions of the cooperating members being determined by the position of contact of the gauge with the bevel, whereby the distance from the position of the gauge at the moment of discontinuation to the junction of the bevel and the cylindrical surface of the finished workpiece will be maintained constant. A race ring 1 of a single-row deep-groove ball bearing with bevels 2, 3 at its ends is mounted in a rotatable chuck 4. The bore is ground by a grinding wheel 33 which, together with its driving motor 29, is carried by a table 28 reciprocated on guides 32. A rod 7 rotatably and axially displaceable in bearings 6 has at one end a gauge 5 and at the other end a block 8 with a groove 9 engaged by pins 10, 11. The pin ] 1 is carried by an arm 13 pivoted to a member 14 connected to the table 28, a spring 16 urges the arm 13 towards a stop 17. The pin 10 is carried by an arm of a friction disc 12 a face of which contacts a friction disc 18 having an arm 19. A cylinder 21 contains a piston 22 the rod 23 of which co-operates with a microswitch 25 pivoted at 26 and adjusted by a screw 27. Before a workpiece is inserted in the chuck 4, the table 28 is moved towards the chuck 4 until a catch 37 on the rod 7 is engaged by a catch 38 to hold the gauge retracted ; this movement brings the arm 19 into contact with a stop 20 and slip takes place between the discs 12, 18. A workpiece is then placed in the chuck 4 and rough grinding proceeds with rapid feed for a predetermined time. At the beginning of finish grinding, with slow feed, a cam (not shown) swings the catch 38 to release the gauge rod 7 ; simultaneously compressed air is admitted to the cylinder 21 to hold the piston 22 in its right-hand position. The spring 16 moves the gauge 5 into contact with the bevel 2; during this movement, the arm 19 abuts the piston rod 23 and thereafter slip takes place between the discs 12, 18. The air pressure on the piston 22 is released, and finish grinding proceeds until the diameter of the workpiece has the required value whereupon the gauge enters the base sufficiently to cause the piston rod 23 to actuate the microswitch 25 and discontinue grinding. The friction discs 12, 18 may be replaced by a a piston and cylinder or other device having two members relatively movable with friction. External cylindrical surfaces may be ground.
Patent GB-1396830-A (GB)
Title: Production of shaped articles of homogeneous mixtures of silicon carbide and nitride
IPC: C04B35/589
Filed: 1973-04-18
Abstract: 1396830 Silicon carbide and nitride mixture BAYER AG 18 April 1973 [19 April 1972] 18726/73 Heading C1A [Also in Division C3] Shaped forms comprising an homogeneous mixture of silicon carbide and silicon nitride optionally containing silica and/or carbon having a composition of Si 50-70% by wt., C 15-40% by wt., N 3-30% by wt., O 0-10% by wt., are made by converting a silazane, made by reaction of a halogeno silane with an amine, an amide, a hydrazine or hydrazide, into a fusible carbosilazane resin by pyrolysis at 200- 800 C., forming the resin, in the form of a melt or solution to the desired shape and heating at 800-2000 C. in an inert atmosphere. The carbosilazane, prior to the final heat treatment may be rendered infusible by specified treatments and may contain additionally carbides, nitrides, borides oxides or carbon or if the resin is spun or drawn to form a fibre it may contain dissolved linear polymeric organic compounds having a mol. wt. > 10,000.
Patent GB-1340181-A (GB)
Title: Superconductor electrical current conductors
IPC: H01B12/00
Filed: 1972-04-21
Abstract: 1340181 Electric Couplings SIEMENS AG 21 April 1972 [22 April 1971] 18734/72 Heading H2E A connecting device allowing expansion and contraction of a superconductor conductor formed of a metal support tube coated with a superconductive material comprises a transversely corrugated tubular support member of normally conductive material coated with a superconductive material. As shown, a superconductor conductor comprises coaxial tubes of high-purity copper or aluminium, the inner tube 1 being coated with a superconductive material on its outer surface, and the outer tube 2 being coated likewise on its inner surface. The corrugated tubes 9 and 10, connected by flared portions 5 and 6 to the tubes 1 and 2 are coated with superconductive material on their outer and inner surfaces respectively. Metallic sleeves 11 and 12 prevent eccentricity between the tubes, and are provided with stops 13 and 14 co-operating with stops 15 and 16 to limit the elongation of the connector. Plastics bushing 17, having channels 18 for the throughflow of coolant may be provided. To ensure equal distancing between the ribs in the expanded state, steel wires 21, 22 may be welded to the ribs. It is stated that the magnetic field in the depressions of the ribs is higher than that on the surface of a tube of the same diameter as that of the depression. In the fully contracted state, the minimum dimension of each corrugated tube should therefore be larger than that of its associated conductor tube.
Patent GB-313972-A (GB)
Title: Improvements in or relating to valve-less pumps
IPC: F04B1/20
Filed: 1929-06-20
Abstract: 313,972. Arbril, J. June 20, 1928, [Convention date]. Cam-actuated, revolving-cylinder pumps.- A pump for artificial silk comprises a rotor 4 provided with cylinders in which plungers 5 are reciprocated by two inclined plates 7 which engage conical heads on the plungers and are rotated between fixed inclined rings 6 by rods 9 attached to the rotor. The ends of the cylinders communicate alternately with suction and delivery ports in the upper face of the base 3, against which the rotor is pressed by a spring 16 to take up wear. In another form described in the Specification as open to inspection under Sect. 91 (3) (a), the rotor is conical and is pressed by a spring into a conical casing provided with suction and delivery ports. This subject-matter does not appear in the Specification as accepted.
Patent GB-1460884-A (GB)
Title: Chlorophenylalkanes
IPC: H01B3/24
Filed: 1975-05-06
Abstract: 1460884 Chlorophenylalkanes RHONEPOULENC INDUSTRIES 6 May 1975 [31 May 1974] 19010/75 Heading C2C [Also in Division C5] Chlorophenylalkanes are prepared by reacting at least one alkyl dihalide which is a dihalogenomethane, a 1,1-dihalogeno-ethane or a 1,1-dihalogeno-propane with a chlorinated aromatic hydrocarbon which is either (i) orthodiehlorobenzene or (ii) a mixture of orthodichlorobenzene and monochlorobenzene and/or 1,2,3-trichlorobenzene or (iii) a mixture of monochlorobenzene and 1,2,3-trichlorobenzene, in the presence of a Friedel-Crafts catalyst.
Patent GB-1360780-A (GB)
Title: Tension-torsion tie bar
IPC: B64C27/35
Filed: 1973-04-19
Abstract: 1360780 Link construction; helicopter rotors BENDIX CORP 19 April 1973 [18 May 1972] 19021/73 Heading B7W [Also in Division F2] A laminated tension-torsion tie-bar coupling 10 for securing a helicopter rotor arm (not shown) to the rotor blade (not shown) comprises spaced apart end bushes 12, 14, for receiving pins (not shown) from the rotor blade and arm being coupled, joined by an endless laminated belt 22 the centre portion of which is formed into parallel sections 24, 26 by a pair of clips 28, 30, the bushes 12, 14 and their adjacent clips 28, 30 being flexibly connected to maintain said clips in a predetermined spaced-apart relationship under tensile load whilst permitting torsional flexibility of the tie-bar. The clips 28, 30 consist of half clips 34, 36 held together by wire filaments 38. To maintain the clips 28, 30 in the predetermined spaced-apart relationship, i.e. prevent the clips sliding together, as tension is applied to the tie-bar, the clips 28, 30 are respectively connected to their adjacent bushes 12, 14 by transverse bars or pins 44 which engage key slots 42 in the clips and are connected to the bushes by windings of a continuous metal wire 48 wrapped around the bushes and curved portions 50 on the bars 44, the windings 48 being trapped between said bushes 12, 14 and the endless belt 22 (Fig. 3). The windings 48 provide relatively low torsional stiffness to twisting motion of the tie-bar.
Patent GB-1008690-A (GB)
Title: Improvements in metal-to-glass joints
IPC: C03C3/091
Filed: 1963-05-14
Abstract: <PICT:1008690/C1/1> <PICT:1008690/C1/2> A composite glass-metal body comprises a part formed of a metal having metallic electric conductivity joined in a vacuum-tight manner to a glass part and at the location of the joint the glass part comprises vitreous material containing between 0.5% and 32% by weight of germanium dioxide, preferably 4% to 20%. The glass part may be wholly of the GeO2 containing material or may be of different glass joined by a layer of the material, in each case the glass part is chosen to have a coefficient of expansion corresponding to the metal used. Metals used are copper, nickel, iron and alloys thereof.  A layer of the material may be heated on the metal part in a non-oxidizing atmosphere to melting temperature.  A glass part containing no GeO2 may then be sealed to the layer.  Alternatively GeO2 mixed with a binder and powdered glass may be compressed and heated in contact with the metal part. In Fig. 1a, a bushing comprises a glass filling 2 securing metal leads 3 in a metal envelope 1. In Fig. 2, a transmitting tube comprises glass components 4 and 5 joining a metal ring 6 and caps 7. Several examples of suitable glasses are given within the following range in percentages by weight: SiO2 57.5-70.2; B2O3 0 or 22.0-25.0; NaO2 2.5-17.0; K2O 1.0-8.0; Li2O 0-0.5; CaO 0-5.4; BaO 0-11.0; MgO 0-3.9; Sb2O3 0-0.3; Al2O3 0.5-4.0; GeO2, in only specific example, 10.7.
Patent GB-996266-A (GB)
Title: Improvements in or relating to pressure exchangers
Inventor: SPALDING DUDLEY BRIAN
IPC: F04F13/00
Filed: 1962-05-17
Abstract: 996,266. Pressure exchangers. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. May 16, 1963 [May 17, 1962], No. 19144/62. Addition to 936,427. Heading F1N. [Also in Division F4] In a pressure exchanger having means for varying the volume of the cells as they rotate relatively to ducting as claimed in the parent Specification the ducting comprises high, intermediate and low pressure inlet ducts 9, 11, 10 connected to an end plate 2 and intermediate and low pressure outlet ducts 13, 12 connected to an end plate 3. The high pressure inlet duct 9 is connected to the cells at their position of minimum volume whereas the low pressure outlet 12 is located near the position of maximum cell volume. A bleed duct 14 controlled by a valve 16 open only during starting serves to divert high pressure inlet gas to a port 15 displaced from the main high pressure inlet port 4 in the direction of cell rotation and serves to assist starting. In operation the gas content of a cell having been subjected to gas at ambient temperature in the high pressure inlet duct 9 is cooled due to expansion of the cell as it approaches port 6 where it is subjected to scavenging gas at intermediate pressure and having been further cooled at 17 and cooling is continued until the cell reaches maximum volume at the low pressure outlet port 7 and the so-cooled gas discharged at low pressure through duct 12 may be used as a source of cold. Specification 996,267 also is referred to.
Patent GB-194996-A (GB)
Title: Improvements in illuminating devices for microscopes and the like instruments employed for examining objects
IPC: G02B21/08
Filed: 1922-07-12
Abstract: 194,996. White, A. E., (University of Dayton Society of Mary). July 12, 1922. Microscopes. - An illuminating - appliance for microscopes for use with an opaque object comprises a lighttransmitting medium 1 arranged alongside of the object under examination having an upstanding portion with inclined faces 4, 5, so arranged that light from beneath is reflected from the surface 4 and refracted through the surface 5 on to the object placed on the opaque base 2. The illuminator may be of annular form as shown. In a modification, the support 10 for the object is adjustable axially and also rotatable by means of the heads 12, 13 respectively.
Patent GB-1474941-A (GB)
Title: Water jet projector
IPC: B05B3/04
Filed: 1974-05-01
Abstract: 1474941 Reciprocating pumps L G ERICKSON 1 May 1974 19186/74 Heading F1A [Also in Divisions A 1 A5 B2 and F2] Water projection apparatus, suitable for use in mining, fire-fighting, or irrigation, comprises a tubular body 5, Fig. 1, having an annular slot 14 in the side thereof, an outlet orifice 11 of circular cross-section at one end thereof and means 1-3 for supplying water under pressure at the other, an elongated member 7 of circular cross-section located adjacent the orifice and adjustable in position with respect thereto, and means 17 in communication with the slot 14 for injecting a friction-reducing agent such as polyethylene oxide into the body, whereby the range of the jet discharged from the apparatus is increased. The member 7 is mounted at one end of a flexible shaft which is adjustable by means of a nut 3 so that the member may act as a valve. The shaft also comprises pins 10 which reduce turbulence and equalize frictional drag within the body. RECIPROCATING PUMPS. The agent is injected through the slot 14 by apparatus including a cylinder block, 18, Fig. 1, having three sections 19-21 of different diameter containing an integral free moving piston 18a having three working faces 22-24, the combined areas of faces 23 and 24 being smaller than that of face 22. Water is taken by tube 1a from supply conduit 1, said tube 1a having a flow control valve 25 and a 3-way cycling control valve 26. With valve 26 allowing discharge of water through tube 27, water flows from body 5 through slot 14 to face 24 causing the piston to be moved downwardly, a valve 28 to be closed, and agent to be sucked into section 20 via valve 31. Subsequent operation of valve 26 and upward motion of the piston displaces the agent past valve 28 to be mixed with water displaced from section 21. The flow-rate of the diluted agent through tube 17 is controlled by the valve 25 which controls the speed of the piston during the injection stroke. Direction or adjustment of the jet above a vertical axis and through a range of elevation angles. A short body or barrel 5 is provided with flow-straightening vanes 34. The weight of the apparatus is supported by bearings carried by a cage assembly 39 mounted on wheels 40 engaging a track 41. A counterweight assembly 36 provides easy balance with the barrel elevated at 30 degrees. The elevation is adjusted by a handle or assembly 36. In the modification of Fig. 4 (not shown) the member 7 is spring-loaded into the closed position within a shielded head located transversely with respect to the barrel axis. The barrel is rotated by an hydraulic motor driven by the water inlet supply and the agent supply is injected upstream of the bearing (44) of the barrel.
Patent GB-715243-A (GB)
Title: Nickel process
Inventor: FORWARD FRANK ARTHUR
IPC: C22B23/00
Filed: 1952-07-30
Abstract: Nickel values are extracted from material containing metallic nickel in a process comprising the steps (1) digesting the nickeliferous material without dissolving any appreciable amount of nickel values with an ammonia-ammonium carbonate solution (e.g. 8 per cent. ammonia, 8 per cent. ammonium carbonate) in the ratio by weight of about one part solids to about three parts solution, feeding an oxygen-bearing oxidizing gas into the mixture during the digesting step, continuing the digesting step until any reduced iron present is converted into an insoluble hydroxide, (2) leaching the digested mixture by dispersing it in a substantially larger volume of ammonia-ammonium carbonate solution sufficient to effect the leaching operation, agitating the mixture and feeding an oxygen-bearing oxidizing gas thereinto until at least the major portion of the metallic nickel values dissolve (3) separating the solids from the leach solution and (4) recovering the nickel values from the leach solution.  Sulphide ores such as pentlandite may be first roasted under oxidizing conditions commencing at 500 DEG C. and progressively heated to 700-800 DEG C., and the so-formed oxide (or an oxide ore if this is used as the starting material) roasted under reducing conditions at a temperature of 400-600 DEG C. (better 480-525 DEG C. preferably in an atmosphere of hydrogen and with the use of a solid fuel, e.g. coke.  If copper is present in sufficient quantity in the ore it may be removed after the oxidation with dilute sulphuric acid, and magnesium sulphate if present should be removed at the same stage by water washing.  The flow sheet (not shown) indicates an embodiment in which a copper-containing sulphide ore is used.  It is preferred to agitate the mixture mildly in the digesting step so that the solids are held in suspension and their mutual contacts effect a gently abrasive action.  In the digesting step a temperature of 20-70 DEG C. is preferred and in the leaching step a two-stage modification of which is described, a superatmospheric temperature and pressure and a solids concentration of 5 per cent. by weight is preferable. It is stated that cobalt if present behaves in the same way as the nickel.ALSO:A starting material containing metallic nickel may be produced from oxidic materials such as oxide ores or oxidized sulphide ores, preferably in admixture with a solid reducing agent, e.g. coke.  The reduction is preferably performed in an atmosphere of hydrogen at 400-600 DEG C. (better 480-525 DEG C.).  According to the invention such material is used for extraction of nickel as carbonate by means of ammonia-ammonium carbonate solutions (see Group III). Cobalt if present is said to behave in the same way as nickel.
Patent GB-968652-A (GB)
Title: Improvements relating to semi-conductors
IPC: H01L21/48
Filed: 1963-05-15
Abstract: 968,652. Semi-conductor devices. ROBERT BOSCH G.m.b.H. May 15, 1963 [May 16, 1962], No. 19202/63. Heading H1K. A semi-conductor body 11 is housed in a metal casing 10 closed by a cover 15 having a connecting lead for the semi-conductor body rigidly affixed thereto, that part of the wall of the casing which extends beyond the cover 15 being bent over to form an inwardly-directed flange 18 retaining the cover and an insulating foil 17 being provided between the cover and the wall of the casing. The connecting lead may be in two portions as shown, an inner resilient portion 14 and an outer portion 19 formed integrally with the cover 15, or it may pass through a hole in the centre of the cover, Figs. 2 and 3 (not shown).
Patent GB-309788-A (GB)
Title: Improvements in extra air valves for internal combustion engines
IPC: F02D9/00
Filed: 1928-12-15
Abstract: 309,788. Head, E. R. Dec. 15, 1928. Induction pipes, extra air valves for.-An extra air valve comprises a plug or cock I slidable or rotatable in a casing E provided with a cupshaped air inlet H and a short direct outlet M adapted to be screwed into the induction pipe, the plug or cock I being opened against the action of a closing spring by a flexible cable which is either connected directly to a hand control, or is led either directly, or around a jockey pulley F<2>, to a clip C attached to the throttle control rod D. The hand control may comprise a spring lever engaging a notched bracket, and! the jockey pulley may be mounted on the dash, or may be carried on the end of a bracket A<2> clamped to the induction pipe by the valve casing.
Patent GB-137252-A (GB)
Title: A new or improved method of reducing solid fats to liquid, and apparatus used therefor
IPC: C11B1/12
Filed: 1919-08-05
Abstract: 137,252. Danin, J. Aug. 5, 1919. Contents, solid, removing.-Fats are removed from barrels by melting, for which purpose steam coils or hollow disks are placed on the top of the contents and sink under their own weight as melting takes place. In the device shown, barrels a in a trolly b are brought beneath spiral coils c having long extensions f, g provided with steam inlet and outlet valves d, e and tied together by bars h sliding on uprights j. The coils are lifted by the pulley rope m. Hollow disks when used may be closed or perforated.
Patent GB-390498-A (GB)
Title: Improvements in or relating to abrasive articles or compounds and methods of manufacturing the said articles or compounds
IPC: B24D13/00
Filed: 1931-07-03
Abstract: <PICT:0390498/III/1> An abrasive article or compound has mixed with the abrasive grains, yielding or resilient particles, for example, of pith, bark, vulcanized rubber, or leather, whereby oversized abrasive grains embed themselves in the resilient particles, the pressure over the whole of the grinding face is equalized, and scratching by the oversized grains is avoided. An abrading or lapping compound may comprise 3 per cent by weight of bark flour, 30 per cent fused alumina grains, and 67 per cent plastic vehicle, for example starch paste or a colloidal solution of Bentonite. The grains 7 of abrasive material may be caused to adhere to the surface of the resilient particles 6 by milling in a ball &c. mill, and may be fixed in position by a coating of rubber, resinous material, etc.; the particles may be mixed with a vehicle, attached to paper or cloth, or bonded by resinous materials, rubber, &c.
Patent GB-1184914-A (GB)
Title: Pivotal Rigging for Sailing Boats and Sail Propelled Vehicles
Inventor: GALBERT ALBERT MARIE GABRIEL D
IPC: B63H9/06
Filed: 1967-04-26
Abstract: 1,184,914. Wind driven marine and ice boats. A.M.G. DE GALBERT. 26 April, 1967 [28 April, 1966; 16 Feb., 1967], No. 19295/67. Headings B7B and B7V. A sailing boat or sail propelled vehicle comprises an airfoil carried by mast a and rotatable with the mast about a substantially vertical axis. The airfoil is tiltable by means of sheet g about substantially horizontal carrier arm e which is centrally disposed with respect to, and transverse to, the span of the airfoil and which passes through the top of the mast. In the embodiment shown the airfoil consists of detachable sail i fixed to the two rigid end ribs r which fit over the extremities of the spar f.