baber/WOPTO huggingface dataset:
Patent GB-207609-A (GB)
Title: An improved tin-opener
IPC: B67B7/46
Filed: 1922-08-30
Abstract: 207,609. Wilson, G. E., and Tulip, J. E. Aug. 30, 1922. Addition to 152,585. Opening by cutting.-Relates to tin-openers of the kind described in the parent Specification. The hook of the cutting blade b and the rolling fulcrum d are disposed near the centre, of the length of the handle a, and the part d, which is of triangular shape, is curved, the surface seen being concave. At the lower edge of the handle a notch is cut out, the corner e being formed into an additional piercer point.
Patent GB-931737-A (GB)
Title: Production of sodium chromate from chromite ores
IPC: C01G37/14
Filed: 1961-06-29
Abstract: Sodium chromate is produced from noritic chromium ores i.e ores having a Cr2O3 content of 40 to 55% and a Cr to Fe ratio within the range 1,3 to 2,3, by forming a mixture of powdered ore (preferably of average particle size 20 to 75 microns), hydrated non-dolomitic or dolomitic lime, soda ash and water, in the proportions equivalent to 60 to 80 parts of hydrated non-dolomitic lime of 70% CaO content or 75 to 115 parts of hydrated dolomitic lime of 45% CaO content and 50 to 70 parts of <PICT:0931737/III/1> water per 100 parts of ore and approximately the stoichiometric amount of soda ash required to react with the chromium content of the ore to produce sodium chromate. Small pellets produced from the mixture are heated to a temperature of 480 DEG  to 600 DEG C., then roasted by passing them through an oxidizing atmosphere rising in temperature from 535 DEG -815 DEG C. to 1090 DEG -1205 DEG C. and then leached to remove the sodium chromate therefrom.  Preferably the hydrated dolomitic lime if finely divided i.e, particles pass through an 80 mesh screen (U.S. standard) and preferably the constituents of the mixture to be subjected to pelleting have a particle size of 20 to 125 microns.  Although it is preferable to dry the ore before pulverizing it and then mixing the pulverized ore with the other pelleting constituents, the ore may also be ground wet in the presence of quicklime whereby slaked lime is produced in situ. The pellets preferably have an average size not exceeding 1/2 inch in their longest dimension.  Preferably the pellets are heated to a temperature of 480 DEG  to 600 DEG C. by passing them through the exit gas stream from the kilns at a temperature of 535 DEG  to 760 DEG C.  In the Figure, a rotating pan pelleting machine 10 is continuously fed with dry mix from line 13 and water from line 14 and the pellets, 16, formed are continuously fed to a foraminous conveyer 18.  Hot gases from the pellet-inlet end 25 of rotary kiln 26 flow through dust chamber 21 heating the pellets conveyed therethrough by conveyer 18.  The heated pellets are discharged at 27 into the inclined rotating kiln 26 and tumbled therethrough countercurrent to the flow of hot oxygen-containing gases produced by burning a suitable fuel supplied by burner 28. Secondary air is introduced at 29 (by arrow 30).  The hot pellets are discharged into leach tank 31, each having a perforated base, and weak sodium chromate solution is added to cover the pellets and percolates through them.  Strong sodium chromate solution is withdrawn and the leached residue may be used as a diluent in the pelleting operation.
Patent GB-1012665-A (GB)
Title: Alumina catalysts and process for preparing the same
IPC: C01F7/34
Filed: 1962-06-20
Abstract: The invention comprises hydrated alumina having 1.2-2.6 moles of water per mole of A12O3.  This alumina may be made by adding an aqueous solution of aluminium ions to an aqueous solution of hydroxide ions in sufficiently small increments, sufficiently slowly and with adequate stirring so as to avoid even localized zones of a measurable pH lower than 7, until the pH of the hydroxide solution has decreased to a value no lower than 7, thereby causing precipitation of said intermediate hydrated alumina.  The precipitate may be dried at 93-149 DEG  C. and calcined at 454 DEG  C. or above to give alumina anhydride.  In one embodiment of the invention, during addition of the aluminium solution, the hydroxide solution is maintained at above 77 DEG  C. and preferably saturated continuously with ammonia.  The chloride or nitrate are the preferred A1 salts. In another embodiment, the addition is carried out in the presence of acetate ions of greater than 0.1 molality to give an alternate solution pH of 7-10.5.  The A1 salts may be the chloride, sulphate or the salt of a carboxylic acid, e.g. the acetate.  A third embodiment is to effect the mixing, e.g. below 77 DEG  C. in the presence of a buffer solution to maintain the pH in the range 7 to 8.5.  This buffer may be an ammonium salt, e.g. that formed by the reaction of the aluminium salt with ammonium hydroxide solution or an acidic ammonium salt, e.g. NH4C1, NH4NO3, NH4NO2, which is added to ammonium hydroxide to give a solution the required pH range and then the aluminium salt, e.g. A1C13, A1(NO3)3 added, or a basic ammonium salt of a carboxylic acid, e.g. ammonium formate or oxalate, to which is concomitantly added ammonium hydroxide solution and an aluminium salt solution, e.g. A1C13, A1NO3 or salt of a carboxylic acid whilst the pH is maintained in the range 7 to 8.5 at all times.  Ammonium sulphate or phosphate should not be used since these contaminate the product.  This embodiment may be operated continuously by mixing buffer, hydroxide ion and aluminium ion solutions and the supernatant liquid may be withdrawn and used again as a buffer solution.
Patent GB-134820-A (GB)
Title: A Device for Testing Sense of Touch.
Filed: 1919-09-27
Abstract: 134,820. Riebe-Kugellager-und Werkzeugfabrik Ges. Nov. 7, 1918. [Convention date]. Testing physiological functions. - Delicacy of touch is tested by the capacity to bring two sur- faces to the same level, the action being controlled by passing the finger over the line of junction of the sur- face. The surfaces shown in the drawing are those of a mandrel and its con- taining ring. The mandrel 2 is capable of being moved longitudinally in the ring 1 by the adjusting-screw 4 and nut 12. It is pre- vented from turning by a pin 3 and slot 3<a>. Steadi- ness of action is secured by the spring 9. The screw carries a graduated disk 5 which works against a pointer 6. The examinee moves the disk 5 until he considers the face of the ring and end of the mandrel are exactly at the same level as tested by passing his finger over the junction line.
Patent GB-846275-A (GB)
Title: Improvements relating to the manufacture of curved tooth involute gears
IPC: B23F5/02
Filed: 1956-08-02
Abstract: 846,275. Gear-cutting or grinding; milling- cutters. INOUE, J. Aug. 2, 1956, No. 23898/56. Class 83 (3). [Also in Group XXIII] A machine for generating curved-tooth involute gears comprises a slotted controlmember 16 engaged by a crank-pin 5a at the projection of the generating point of a tool on the intersection of its periphery with the planeof-action 2, and a tool-head 27 on a carriage 15 sliding on a guide 14 parallel to the plane-ofaction in rolling contact with the base cylinder of the gear blank, the control bar being reciprocated and the gear blank being oscillated to generate the involute profile, and the toolhead being rotated so that the generating point follows an arc of a fixed circle 3 representing the curvature of the teeth. The tool may be a grinding-wheel of cup or pencil-type, or a cutter of face-mill, Fig. 4, or end-mill type, and the tool for the concave flanks may be of larger radius than that for the convex flanks to produce a crowning effect. A pair of cutters Ci, Co, Fig. 17, may be mounted eccentrically to cut both sides of a tooth simultaneously, or such cutters may be arranged to cut both sides of a space simultaneously. A grinding-wheel such as is described in Specification 846,276, may be used. The cutting-edges or faces of the tools may be slightly inclined, and adjustment for wear is provided. In Fig. 3, the wheel G is slidable along a guide 22 on the head 27, which is rotatable by worm-gearing 25, 26 about the axis 7, 7a of the circle 3. The head is connected to the slotted control-bar by the crank 5a. The bar is reciprocated by a cam 30 rotated by a main-shaft 32, which also rotates the worm 25. The bar and cam are held in contact by a weight 39 or by hydraulic means. A rack on the slide 15 rotates a pinion 35 to oscillate the gear-blank B through gearing 13.
Patent GB-1217626-A (GB)
Title: Improvements to compressed-air brake systems for vehicles
Inventor: GACHOT JEAN
IPC: F16K11/02
Filed: 1969-05-12
Abstract: 1,217,626. Fluid pressure brakes; valves. J. GACHOT, and F. PERALES. 12 May, 1969 [15 May, 1968; 19 Dec., 1968], No. 24078/69. Headings F2F and F2V. In a compressed-air brake system for road vehicles comprising two air circuits terminating in two of the ports 52, 55, of a double checkvalve A whilst the third port 53 supplies a common terminal pipe to a receiving unit the double check-valve comprises a flap 57 pivotally mounted between the two first ports 52, 55 and capable of selectively obturating one of said ports under the action of compressed air supplied through the other port. An air compressor 1 supplies compressed air through a regulator 2 to the reservoirs 3, 4 and the latter reservoir 4 supplies compressed air through an actuating unit 5 to the line 7 terminating in front brake cylinder 8 and line 9 terminating in rear brake cylinder 10. In the event of failure of this system the compressed air of reservoir 3 can be delivered into the emergency cylinder 18 of the rear brake either through the unit 5 and pipe 12 or through a manual control valve 13 and a pipe 17, each circuit terminating in a port of the valve A. The valve A has the inlet ports 52, 55 terminating in valve seats 58, 59 and the flap 57 is of natural or synthetic rubber with a fabric core. In a modification Fig. 10 the valve seats 58a, 59a are cut obliquely and the flap has an enlarged wedge shaped portion 65. The invention can also be applied to a tractortrailer brake system.
Patent GB-813626-A (GB)
Title: The treatment of flowable materials
IPC: B01F29/63
Filed: 1955-09-15
Abstract: 813,626. Screw conveyers. CELANESE CORPORATION OF AMERICA. Sept. 15, 1955 [Sept. 15, 1954], No. 24119/57. Divided out of 813,625. Class 78 (1). An apparatus, suitable for use in processes in which a physical or chemical change takes place in a flowable material, comprises a vessel having an inlet at one end, an outlet at the other, a rotatable helical vane having a number of convolutions of uniform pitch mounted in the vessel and a second helical vane pitched equally and in the same direction as the first and interlaced and mounted for rotation with it, and extending for at least one complete convolution terminating at the outlet of the vessel, the arrangement being adapted on rotation to divide material entering and passing through the vessel at a constant rate into separate equal batches, the second helical vane serving to divide each separate batch so formed into further equal parts before discharge through the outlet. As shown, a hollow cylindrical tank 11 carries a circumferential ring gear 14 driven by gear 21 which causes the tank to rotate. Within the tank is provided a continuous helical vane 22 which makes a number of uniform convolutions along the length of the tank and the outer edge of which is welded to the wall of the tank throughout its length. The central part of the vane is open, the inner edge 24 of the vane also forming a helix of uniform diameter and pitch along the length of the vane. At the discharge end of the tank is provided a second helical vane 32, the external and internal diameters of which are the same as those of the first vane 22, though this second vane makes only one complete convolution. This second vane is displaced 180 degrees with respect to the first vane so that it occupies a position midway between adjacent convolutions of the first vane. In operation, the material being treated is fed continuously into the tank by means of pipe 29. As the tank rotates the material is divided up into separate batches by vane 22, and each batch is progressively moved towards the far end of the tank. Before reaching the outlet end of the tank, which is frusto conical in shape, each batch is divided again in two by the action of vane 32, after which one complete rotation serves to discharge each divided batch through outlet opening 38, the diameter of which should be greater than the diameter of the inner edge of helical vane 22. The helical devices ensure that each batch passes through the tank with comparatively little variation in the time of passage. Specitication 783,504, [Group IV (a)], is referred to.
Patent GB-434241-A (GB)
Title: Improvements in or relating to automatic pipe or electric couplings for rail and like vehicles
IPC: B61G5/08
Filed: 1934-08-22
Abstract: 434,241. Pipe couplings. KNORRBREMSE AKT.-GES., 9, Neue Bahnhofstrasse, Lichtenberg, Berlin. Aug. 22, 1934, No. 24215. Convention date, Sept. 2, 1933. [Class 99 (i)] [See also Group XXXVI] In an automatic pipe or electric coupling for vehicles of the kind in which the coupling heads are resiliently supported and pressed together when the vehicles are coupled, each coupling head has a rearwardly extending guide blade d having a narrow projection b at its junction with the seating surface a and a forwardly extending guide blade e havmg a narrow recess c at its junction with the seating surface, the projection of one head fitting into the recess of the other. To effect vertical alignment each head has an arm g extending sideways and downwards. The lower edges of the blades rise in the outward direction.
Patent GB-1279078-A (GB)
Title: Sewage handling systems
Inventor: DROUHARD ALFRED JOSEPH JR
IPC: E03F1/00
Filed: 1971-04-19
Abstract: 1279078 Handling sewage from sanitary closets MANSFIELD SANITARY Inc 19 April 1971 [30 March 1970] 24320/71 Heading E1C An arrangement for handling sewage from a sanitary closet, of the kind having a valve 25 in place of a water trap and intended for use in vehicles where a restricted quantity of flushing liquid is available, comprises a vacuum pump 56, e.g. a diaphragm pump driven by an electric motor 61, a manifold 63 incorporating a non-return valve and a vacuum sensor 64, a pipe 58 communicating the vacuum to a holding tank 12, and a further pipe 13 communicating the vacuum thus produced in the holding tank to an outlet orifice 45 in a base structure 16 of the sanitary closet, there being incorporated in the base structure 16 between the valve 25 and the orifice means 45 a drop well 43 merging into a conical throat portion 44 whereby opening of the valve 25, by manual operation of a handle 35, causes the material in the toilet to be rapidly impelled against the orifice means and fragmented before being sucked into the holding tank. The valve 25 is a hemispherical shell member 29 which is journalled on pins 30, 31 and has cut-away portions 42 so that when the handle 35 which is mounted on an extension of pin 30, is operated the valve is swung from the closed position shown through approximately 90, and the material, together with a small amount of flushing liquid, e.g. water, supplied by a pump 21, is then sucked downwardly through the cut-away spaces. The valve 25 seals against a sealing ring 38 supported by a resilient backing 39 fitted between the base structure 16 and the toilet bowl 14. Base portion 16 has a V groove in its upper edge 37 filled with backing material 37a. The vacuum in the holding tank is maintained at a desired value by the vacuum sensor 64 which controls the diaphragm pump. The pipe 58 from the manifold 63 is connected to a fitting (55, Fig. 5, not shown) extending within the holding tank and incorporating a float-actuated valve (74) which, when the holding tank is full, rises on the surface of the liquid in the tank to close communication between the vacuum pump and the tank by engaging a valve seat (76). Also fitted to the top of the tank is a sensor arrangement (70, 71) which operates an electric warning lamp 72 (Fig. 1) when the tank is full. A tube 83 having a removable cap 88 is provided for emptying purposes.
Patent GB-283257-A (GB)
Title: Improvements in and relating to a method and means for operating diesel or like internal combustion engines
IPC: F02B3/00
Filed: 1926-10-01
Abstract: 283,257. Biggar, P. E., and Attendu Engines (England), Ltd. Oct. 1, 1926. Regulating.-In Diesel or like engines, the ignition pressure and temperature are maintained constant by varying the quantity of the air charge so that, as the speed of the engine increases, the pressure of the air available for compression is reduced to sub-atmospheric pressures The variations in the air charge may be obtained by throttling the air-inlet passage, varying the lift of the air-inlet valve, or varying the time of closing of the air-inlet valve during the suction stroke. In two-stroke engines, the air-inlet to the crank case is throttled. Fig. 2 shows an airinlet valve 7 actuated by a cam-operated lever 8, the fulcrum 10 of which is formed by the end of a lever 11 adjusted by the governor 5. In other forms, the governor is connected to the air-inlet throttle, or to an axially-movable cam for varying the timing of the air-inlet valve. Hand control may supplement the governor control, and the valves may be of the poppet or sleeve type. According to the Provisional Specification, a variable portion of the air charge may be rejected during compression by adjusting the timing of the exhaust or inlet valves or of a special outlet valve, or by throttling the exhaust outlet.
Patent GB-245834-A (GB)
Title: Improvements in or relating to wire-drawing machines
IPC: B21C1/12
Filed: 1924-10-14
Abstract: 245,834. White, A. E., (Sleeper & Hartley, Inc.). Oct. 14, 1924. Drawing wire.-In a continuous wire-drawing machine, the drawing-drums 28 are driven at progressively increasing speeds by shafts 00, 10 - - which are independently driven by a shaft 5, the speeds of the shafts 00 - - varying inversely as the torque in the corresponding drawing-drum shaft. Each shaft 10 - - - carries an expansible pulley 19 - -, Fig. 4, whereby it is driven by a belt 7 from a pulley 16 - - on the shaft 5 which is driven through spur gearing by an electric motor 3. The belts 7 are tensioned by floating pulleys 8. The expansible pulleys may be mounted on the driving instead of on the driven shafts and each such pulley comprises rim segments 19 mounted as radial slides in a hub 13 which is loosely mounted on the driving-shaft. The rim-slides are urged radially by springs and carry pins engaging cam slots 12 in a disc 11 keyed to the driving-shaft, so that on relative angular movement taking place between the hub and disc as the result of a variation in the torque on the drum shaft, a compensating change in the gear ratio of the drive takes place. The machine comprises a pointing-mechanism 33 actuated by a crank-pin 32.
Patent GB-1455002-A (GB)
Title: Heat sink assembly
IPC: H01L23/40
Filed: 1973-01-08
Abstract: 1455002 Heat pipes REDPOINT Ltd 24 Sept 1973 [8 Jan 1973] 24419/76 Divided out of 1455001 Heading F4U [Also in Division H1] A heat sink assembly for use with electronic components comprises a heat pipe connected at one end to a finned heat sink and along or substantially along its remaining length to a printed circuit board by mounting strips. As shown in Figs. 1 and 2, semi-conductor devices 10 are secured to the circuit board 11 and serve to space the mounting strips 8, 9 from the board. The strips 8 are formed with a central channel 12 for receiving the heat pipe 6. The strips 9 have a similar bent-over end portion 13. In Fig. 3, two tubular heat pipes 14 are secured to a heat sink 15 formed in two halves 15<SP>1</SP>. The heat pipes 14 are attached to the board 18 via mounting strips 16 and semi-conductor devices 17.
Patent GB-906472-A (GB)
Title: A process for the manufacture of velvet-like textile products
IPC: D06M15/53
Filed: 1960-07-14
Abstract: 906,472. Flock-coated fabrics. VEREINIGTE GLANZSTOFF - FABRIKEN A.G. July 14, 1960 [July 14, 1959], No. 24614/60. Class 140. Velvet-like textile products are produced by impregnating tows of filaments of a fully synthetic material with an emulsion of an ester of a fatty acid containing from 12 to 20 carbon atoms, e.g. stearic acid polyglycol ester, cutting the tows in the wet state to form a flock, opening the cut flocks by vigorous stirring in a solution containing sodium or potassium salts as well as an anti-electrostatic agent, drying the treated flocks and applying them in a high-voltage electric field to a material provided with an adhesive coating. The opening of the flocks may be effected in a bath at a temperature of at least 65‹ C. Specified materials to be flocked are fibre fleece of rayon fibres, textile or knitted fabrics, e.g. cotton fabric, foils, paper and foam rubber. Specified adhesives are polyacrylic acid ester and polyacrylonitrile. Sodium and potassium salts specified are sodium sulphate, potassium nitrate, sulphate, chloride, carbonate and bicarbonate, and mixtures thereof. Electrostatic agents specified are derivatives of fatty acids or fatty alcohols of high molecular weight, expecially their ethoxylated derivatives, polymerized quaternary organic nitrogen compounds, polyglycol esters, and phosphoric acid esters. Filaments of polyamide and polyester are specified. The adhesive may be printed on the base material in the form of a pattern.
Patent GB-208214-A (GB)
Title: Flexible belt fastener
IPC: F16G3/00
Filed: 1922-09-12
Abstract: 208,214. King, L. F. Sept. 12, 1922. Laces; lacing - fastenings. - A belt fastening comprises a length of twisted, woven, or braided, flexible material formed with a loop at! each end, threaded through one or more holes in each of the belt ends and secured by a pin, pins, or the like inserted in or through the looped ends. The looped elements D may be of steel wire and any number may be arranged across the belt. They may be secured by split pins B, as shown, or by screws or bolts attaching the looped ends to the belt.
Patent GB-853386-A (GB)
Title: Improvements in or relating to fibre glass moulding
Filed: 1957-08-21
Abstract: 853,386. Moulding pre-stressed fibre-resin articles. EDEY, C. C. A. Nov. 21, 1958 [Aug. 21, 1957], No. 24828/67. Class 87(2). To form a pre-stressed fibre reinforced article glass fibre rovings 10 are wound on a rotatable former 11 which may be treated with a release agent, e.g. carnauba wax, and rovings 13 are laid in slots 12, the two rovings being cemented together by, e.g. polymethyl methacrylate dissolved in xylene. After the rovings are removed from the former, a mat 14 of chopped glass fibres, is inserted between the rovings, and similar strips 15 are interwoven on the outside. The ends of the assembly are impregnated with epoxy resin, the whole rolled up to the form shown in Fig. 4, and the ends enclosed in " Cellophane " (Registered Trade Mark). Connectors comprising internally and externally threaded members having screw-threaded plugs 20 are placed over each end. Each connector is made up from two parts connected by dowels and a locking device. Polytetrafluoroethylene washers 22 may be placed over each end of the roll before assembly, and the connectors may be coated with a release agent comprising a baked-on silicone solution covered with carnauba wax or sodium alginate. The epoxy resin in the ends is then cured and the assembly is placed in a tensioning frame where nuts 27 are screwed up to stretch the roll. Whilst in this stretched state, a mould is positioned around the roll between the washers 22, the mould surface is treated with a release agent, and a polyester resin is forced into the mould. The roll may be first thoroughly wetted with resin, and air may be sucked out of the mould. After curing, the mould is removed, the roll reinforced with an outer layer of rovings and cold setting resin, and after complete curing, the connectors removed. The roll may be formed with end flanges to retain polytetrafluorethylene collars, and the pressure of the impregnating resin used to produce the stretching for the pre-stressing. The collars are coated with an accelerator to prevent leakage of resin.