baber/WOPTO huggingface dataset:
Patent GB-1074434-A (GB)
Title: Process and apparatus for obtaining sulphuric acid
IPC: C01B17/90
Filed: 1964-08-12
Abstract: A process for obtaining sulphuric acid comprises bringing a gaseous current containing SO3 at a temperature corresponding to the dew point of the gases into contact with a supply of an aqueous sulphuric acid solution containing 75 to 90% by weight of H2SO4, the volume and concentration of the solution being kept substantially constant by continuously extracting a quantity of this solution (corresponding to the acid formed by the absorption of the SO3) which is concentrated by being caused to flow in countercurrent and intimate contact with the gaseous current at a temperature of about 30 DEG  C. above that corresponding to the dew point of <PICT:1074434/C1/1> the gases, before the current has come into contact with the sulphuric acid solution.  The gaseous stream containing SO3 at, e.g. 250 DEG  C. passes through heat exchanger 12 (Fig. 2) where it is cooled to a temperature of 30 DEG  C. above that corresponding to the dew point of the gases; the gaseous stream then passes through the concentrator 14 in intimate contact with H2SO4 from the absorber 20 via 19; concentrated H2SO4, e.g. 94% by weight is withdrawn at 16; the gases now at the temperature corresponding to their dew point leave 14 at 18 and pass to absorber 20 where they are contacted with H2SO4 of, e.g. 80% by weight which is circulated via 23 and is cooled at heat exchanger 24; excess acid formed due to the absorption of SO3 passes to concentrator 14 via 19. The gaseous current may contain 0.8-9% by volume SO3 and originate from the burning of a residual gas containing vesicular S and/or S compounds with natural gas, the oxidation of SO2 to SO3 then being effected catalytically.
Patent GB-830004-A (GB)
Title: Magnet steels with low coercive force
IPC: C22C38/06
Filed: 1956-10-29
Abstract: A magnet steel has a coercive force not greater than 1.5 oersteds, 0.01% to 0.10% C at least 0.01% N, the usual amounts of Mn, P, and S, and an Al content at least fifteen times the nitrogen content.  The steel may be produced in the acid or basic Bessemer converter or in the oxygen converter and the phosphorus content may have a maximum value of 0.15%.  It is stated that the coercive force of the steel does not change after ageing.
Patent GB-675781-A (GB)
Title: Improvements in or relating to vacuum gauges
IPC: G01L21/00
Filed: 1949-12-23
Abstract: 675,781. Vacuum gauges. M-O VALVE CO., Ltd., COOK, K. G., and DAVIES, D. G. B. Dec. 1, 1950 [Dec. 23, 1949], No. 32992/49. Class 37. A vacuum gauge comprises a plurality of discharge tubes 7 ... 12, Fig. 2, having unheated electrodes, spaced apart by a different distance for each tube, and all tubes being connected to the vacuum system whose pressure is to be measured; each tube is connected by a resistance 14 ... 19 to a high voltage source 13 and a meter 20. The gas pressure is indicated approximately by the number of tubes conducting, and more accurately by the reading of the meter 20. To ensure uniform starting of the discharges, the tubes may be ionized, e.g. by irradiation with ultra-violet or phosphorescent light. The electrodes 4, 5, Fig. 1, are preferably of nickel, iron or molybdenum and may be coated with, e.g. titanium dioxide.
Patent GB-657641-A (GB)
Title: The treatment of tars and pitches
Inventor: GREAVES CHARLES DESMOND
IPC: C10C3/08
Filed: 1948-12-22
Abstract: Carbon is prepared from pitches, tars or asphalts by treating them with a volatile solvent, removing the suspended solid (primary "free carbon"), removing the solvent from the filtrate, distilling the solid residue, adding a volatile solvent to the distillation residue and removing the suspended secondary "free carbon" from the liquid. Further similar cycles may be effected.ALSO:Asphalt from the distillation of coal tar or crude petroleum is treated with a volatile solvent the suspended solid is separated from the liquid by filtration or centrifugal action, the solvent is removed from the liquid and the solid residue is distilled leaving a secondary asphalt.  This secondary asphalt is treated with a volatile solvent and the suspended solid removed the liquid as before-the removed solid being substantially free from mineral matter and being known as secondary "free carbon".  In an example, coal tar pitch is treated with solvent naphtha.
Patent GB-614923-A (GB)
Title: Flame-machining method and apparatus
IPC: B23K7/08
Filed: 1945-12-10
Abstract: 614,923. Blowpipe burners. LINDE AIR PRODUCTS CO. Dec. 10, 1945, No. 33391. Convention date, Jan. 17. [Class 75 (i)] [Also in Group XXII] A blowpipe for flame machining metal bodies has a central longitudinal passage for oxygen an outer longitudinal passage for preheating gas and an intermediate passage for discharging a stream of adjuvant powder such as ferromanganese, tin, lead &c. The nozzle, Fig. 2, has a central oxygen passage 63 fed from a tube 73 and outer passages 47 for heating gas supplied by a tube 69. Intermediate passages 45 are supplied with adjuvant powder from a tube 77 connected to a hopper under air pressure. The parts 53, 44 of the nozzle are jointed by taper surfaces 49, 51, 55 and packing washers 64, 70. The jet may have a central orifice 109 for oxygen and outer ring of orifices 111 for preheating gas and an intermediate ring of orifices 113 for adjuvant powder. The orifices 113 may be replaced by a single orifice to discharge a single stream of powder ahead of the oxygen jet. In a modification Fig. 9 a conventional cutting nozzle 100 has an extension tube 105 secured by brazing and supplying powder to a jet 104, as set forth in Specification 601,982 [Group XXII].
Patent GB-1352409-A (GB)
Title: Process for the anionic polymerisation of lactams
IPC: C08G69/20
Filed: 1971-07-16
Abstract: 1352409 Lactam polymerization BAYER AG 16 July 1971 [18 July 1970] 33524/71 Heading C3R A polyamide is made by melt-polymerizing a lactam (L) having #5 ring members in the presence of an activator and a catalyst solution which is liquid at room temperature and remains liquid after prolonged storage at room temperature. The activator is an aliphatic, cycloaliphatic, or aromatic mono- or diisocyanate, a reaction product of an isocyanate and a lactam, or a dialkyl, dicycloalkyl, or diaryl carbodiimide. The catalyst solution comprises an alkali metal lactamate dissolved in a mixture of α-pyrrolidone and one or more lactams (M) having #6 ring members. Lactam (M) may be #-capro, lauric, or caprylic lactam; it may be the same as lactam (L).
Patent GB-1470119-A (GB)
Title: Device for determining the position of a structural element
IPC: G01D5/36
Filed: 1974-07-30
Abstract: 1470119 Position measurement DIXI SA 30 July 1974 [15 Aug 1973] 33556/74 Heading G1A Apparatus for determining the position of an element provided with a port carrying regularly spaced rulings, projects an enlarged image of the rulings on to a regularly spaced array of photosensitive elements and electronically determines the position of an image of a ruling relative to the end of the array. The spacing of the elements is less than that of the projecting ruling images. As described, the ruling separation is 1mm., the enlargement factor 100 and the photo-sensitive element separation is also 1mm. The array comprises more than 100 elements so that at least one projected ruling will always be on the array. At the end of a measuring scan a pulse F resets counter 17 and bi-stable 15 and 18 and sets monostable 16. When monostable 16 resets, 100KHz pulses from clock 8 are supplied via gates 19, 21 and 22 to output S and via ¸ 10 circuit 9 to array 4 as 10KHz scanning pulses. The photo-detector outputs are fed to envelope detector 11 and Schmidt trigger 12. When a projected ruling is reached, trigger 12 generates a pulse which sets the Q output of 15 to O and closes gate 22 preventing further pulses reaching S. The count at S is a measure of the distance of the projected ruling from the end of array 4 to an accuracy of 10 Á m. The system may be combined with a coarse measuring system to give absolute position. Counter 17 and bi-stable 18 are used to define two measuring periods, each <SP>2</SP>/ 3  of a scanning cycle in length and starting at the beginning and after <SP>1</SP>/ 3  of the cycle. This is used to prevent measurement of the positions of two projected rulings when two are present on the array.
Patent GB-175120-A (GB)
Title: Improvements in mechanism for adjusting the gear box of a motor cycle
IPC: B62M7/00
Filed: 1920-11-29
Abstract: 175,120. Stevens & Co. (1914), Ltd., A. J., and Stevens, H. Nov. 29, 1920. Gear-boxes, mounting or supporting. - The gear-box of a motor-cycle is adjusted longitudinally by means of a screwed eye-bolt 4 which engages the rear securing-bolt 3 of the gear-box and is itself adjusted by a rotary sleeve 5 reversely screw threaded internally and externally and engaging a lug 8 on the frame.
Patent GB-771768-A (GB)
Title: Improved dental therapeutic compositions
IPC: A61K8/49
Filed: 1954-11-19
Abstract: A dental preparation comprises a compound of formula <FORM:0771768/VI/1> where R represents an alkyl, hydroxy-tertiary butyl, butylamino-propyl or dicyclohexyl group and a compatible vehicle. The preparation may be in the form of a paste, powder or liquid dentifrice, mouthwash, chewing gum, tablet or troche.  R may be isopropyl, secondary butyl, ethylhexyl, dodecly, tetradecyl and hexadecyl groups.  A concentrate of the pyrimidine compound and a surface active agent (an ethanolamine salt or a sorbitan ether-ester) may be prepared and added to the vehicle. Water-soluble oxolates, e.g. sodium, potassium, ammonium or the urea salt, may also be present in addition to the conventional vehicle.  Example 1 describes a paste dentifrice comprising 1:3 - di - (ethyl hexyl) - 5 - methyl - 5 - amino - hexahydropyrimidine and a complex sorbitol ether-ester dispersing agent in a paste comprising calcium sulphate, calcium phosphate, sodium lauryl-sulphoacetate, gum tragacanth, sodium saccharin, glycerine, d  - sorbitol, flavouring and water.
Patent GB-632116-A (GB)
Title: Improvements in and relating to front windscreen structures for automobiles
IPC: B60J1/04
Filed: 1947-12-19
Abstract: 632,116. Vehicle windscreens. BRIGGS MOTOR BODIES, Ltd., and TILBURY, J. Dec. 19, 1947, No. 33638. [Class 20(iii)] A front windscreen structure for a motor vehicle comprises a window opening and a single transparent panel 1 mounted in the opening with the lower horizontal edge 10 supported below the top surface of the bonnet 2 and the upper portion projecting above the bonnet into the opening. The panel is mounted in guides at the sides and passes between the flange 7 of the rear of the bonnet and the flange 9 of the vehicle body portion forming the instrument panel 8. The lower edge 10 of the panel is held in a support 11 which has a gutter 12 connected to hoses &c. to remove water. The panel is operated by toggle levers 13, 14 which are pivoted together at 15 while the arm 13 is also pivotally connected to the support at 16 and arm 14 is pivotally mounted at 17 to a fixed part of the vehicle. An arm 18 secured to the arm 11 extends below the instrument panel and is moved to open (dot dash lines) or close (full lines) as shown in Fig. 2. A toggle mechanism is mounted at both sides to give parallel movement. A weather seal is provided at the top and sides of the opening. Wiper blade arms 19 mounted on a shaft 20 extending through the panel operate through the slot in the bonnet and rest beneath the bonnet.
Patent GB-1104721-A (GB)
Title: Improvements in aircraft controls
Inventor: IDDON KENNETH JAMES
IPC: B64C29/00
Filed: 1963-08-26
Abstract: 1,104,721. V/STOL aircraft. HAWKER SIDDELEY AVIATION Ltd. 25 Aug., 1964 [26 Aug., 1963], No. 33713/63. Heading B7G. In a V/STOL aircraft provided with thrust-vectoring jet lift engines, the control transmission between the pilot's control members and the engines comprise resolver devices that provide, for every variation of the thrust vector, a corresponding adjustment of the engine thrust. Four lift engines 23 (starboard bank only is shown) are mounted in a pod on each wing, a pitch-control puffer nozzle is mounted at the tail of the aircraft and both are controlled by connections to a lift lever 31, control column 33 and rudder pedals 34. Lift is controlled by up-and-down movement of lever 31 acting through levers 36 and linkwork 37-40 to operate a jack 19 that causes a pivoted arm 12 to move a rod 16 linearly to adjust simultaneously all of the engine throttles 26 through a common link 25. Lift nozzle adjustment for thrust vectoring is controlled by rotation of twist-grip 32 which, through linear motion of rod 43, operates through linkage 44- 49 a jack 20 to act upon arm 12 in a direction at right-angles to jack 19 to cause rotation, about the axis of rod 16 of a pulley 11 connected by an endless cable to the adjustable jet nozzles of both banks of engines. The mechanism 11, 12, 16, 19, 20 is so constructed (Figs. 1 and 2, not shown) that variation of nozzle angle produces automatically an appropriate corresponding adjustment of the engine throttles. Pitch control is achieved by fore-and-aft movement of column 33 which acts through linkage 54, 55, 53, 52 to operate a valve controlling the supply of gas to nozzle 51. Roll control is effected by sideways movement of column 33 which operates through linkwork 41, 42, 36-40 to adjust the engine throttles of the two banks of engines differentially. Yaw control by pedals 34 acts differentially on the nozzle deflecting mechanism on opposite sides of the aircraft.
Patent GB-282113-A (GB)
Title: A method of mounting centrifugal compressors or other rotary apparatus
IPC: F04D17/12
Filed: 1927-12-13
Abstract: 282,113. Soc. Rateau. Dec. 13, 1926, [Convention date]. Multi-stage pumps and turbines.-Centrifugal compressors and other rotary apparatus such as turbines, have a number of rotors mounted between bearings and one or more rotors overhung on the shaft in order to raise the critical speed of the shaft. -The compressor shown in Fig. 1 has five rotors a mounted on the shaft between the bearings b and the shaft is driven by a turbine e through a flexible coupling d. There are two overhung rotors c and the two sections of the compressor have separate entry and discharge pipes. The rotors may have radial vanes of the type described in Specification 231,165. In a modification the overhung rotors are on the end of the shaft by the coupling d and a thrust bearing is provided at the other end. In another modification a bilateral rotor a', Fig. 3, is arranged between the bearings, and the intake g of an overhung rotor c is connected to the discharge from the rotor a<1>. The fluid passing from one section of the pump to the other may be passed through a refrigerant.
Patent GB-970044-A (GB)
Title: Improvements in or relating to withdrawable electrical switches
IPC: H02B1/056
Filed: 1960-10-03
Abstract: 970,044. Switchgear structures. COMPAGNIE ELECTRO-MECANIQUE. Oct. 3, 1960 [Nov. 30, 1959], No. 33858/60. Addition to 853,620. Drawings to Specification. Heading H2B. In withdrawable switchgear as described in the parent Specification, one set of pins are not bridged by a movable contact but are engaged by contacts secured to the panel and connected to the contactor coil. Two of the sets of contact pins are shorter than the other sets so as to co-operate with bridging contacts only in the fully-home position.
Patent GB-205397-A (GB)
Title: Improvements in or relating to road vehicles for passengers
IPC: B62D31/02
Filed: 1922-07-15
Abstract: 205,397. London General Omnibus Co., Ltd., and Shave, G. J. July 15,1922. Sides and roofs.-In a two-deck road vehicle for passengers and of the type having a covered-in upper deck and side windows, the top, comprising the roof 10, Figs. 1 and 6, and windows 13, 14, is carried by uprights 11 mounted on horizontal members 18 which are adapted to be detachably secured by projecting members 22 to rails 21 forming a permanent part of the vehicle body, so that the top may be removed as a single unit leaving front supports 27, Fig. 2, and windows 26 in position. The horizontal joint between the roof 10 and the front windows 26 is made weathertight by providing the roof with a downwardlydirected front face. The window 26 may be detachably mounted on the body, and the win. dows 19 are adapted to slide on detachable or other runners 19 in front of the windows 14 which may be detachably secured to the framework. When the top is removed, a hand-rail 23 is secured to the rail 21 by projecting members which correspond to the projecting members 22. Specification 205,214, [Class 103 (ii), Rail and road vehicles, Details applicable &c. to], is referred to.
Patent GB-1276052-A (GB)
Title: Improvements in pipe joints
Inventor: O'BRIEN JOHN LESLIE
IPC: F16L21/04
Filed: 1970-07-13
Abstract: 1276052 Pipe joints J L O'BRIEN B FINNIMORE and D J A HOGG 13 July 1970 33951/70 Heading F2G Pipes 26, 27 are joined when the latter is inserted into a socket 28 in the former and a sealing ring 31 is engaged by a gland ring 32 having a flat rear face 33 along which are slidden arcuate wedges 36, (37) whose upper inclined fans slide along ramp faces 38 on the inner side of a socket mouth flange (43). The gland ring 32 has a discontinuous peripheral flange, to permit its insertion through the socket mouth flange (43) which is similarly discontinuous. The sealing ring 31 has a continuous recess around its upper face for the gland ring 32. The arcuate wedges 36, (37) may be of either hand.
Patent GB-464153-A (GB)
Title: Improvements in or relating to cooking stoves or ranges
IPC: F24C15/16
Filed: 1935-12-09
Abstract: 464,153. Supports for articles in ovens. STEVENS, A. H. (Estate Stove Co.) Dec. 9, 1935, No. 34009. [Class 126] The frame 50 for supporting a foodstuffs pan in an oven is carried by a lazytongs mechanism mounted on a slidable drawer 18, the arms 44, 47 of the lazytongs being pivoted in slots 41, 52 in brackets 40 and the frame 50 respectively and being adjustable by means of the arms 60, which are connected at one end to the pivots 46 and are moved forwardly or rearwardly by the nut and screw device 66, 67. The arms 47 have tapering strengthening webs 48. The closure 29 for the oven is carried by the drawer 18.
Patent GB-1490026-A (GB)
Title: Turbocharger
IPC: F02B37/00
Filed: 1975-08-15
Abstract: 1490026 Exhaust gas turbocharger; supercharged IC engines WALLACE-MURRAY CORP 15 Aug 1975 [29 Aug 1974] 34036/75 Headings F1B and F1G The invention relates to an exhaust gas driven turbocharger for an I.C. engine, the turbocharger comprising a turbine rotor 10, a compressor rotor 14 and a fan rotor 16 all mounted on the shaft 8. The compressor comprises also a stator casing 20 which defines an annular inlet chamber 28 having an inlet duct as shown, and an annular outlet chamber 22 having an outlet duct 24 through which the air discharges to a cooler 26 and thence to the inlet of the I.C. engine. The annular inlet chamber 28 is sealed to the shaft 8 at 30. The fan rotor 16 is disposed within a duct 32 which is open at one end to atmosphere. The duct 32 is connected at its other end to duct 36 which passes through the cooler 26 so that in operation ambient air is drawn in to the duct 36 as cooling fluid for the cooler, the air discharging from the duct 32 adjacent the compressor casing, the seal 30 ensuring that the warm cooling air is not drawn, into the compressor. The fan could alternatively draw air at the end open to atmosphere and discharge it through the cooler 26 to atmosphere. In Fig. 3 the fan rotor 16 is disposed on the shaft 8 between the turbine and compressor rotors 10 and 14, the fan being disposed within a duct 320, 380 through which air is drawn by the fan through the air cooler 26 (not shown in Fig. 3) and line 36 and discharged towards the turbine casing as indicated by the arrow. The compressor casing comprises an axial inlet 28 and an annular volute outlet 22. The duct 320, 380 is sealed to the shaft 8 at 30.
Patent GB-785704-A (GB)
Title: Hydrocarbon drying oil production
Inventor: JAROS STANLEY EDWARD
IPC: C08F36/04
Filed: 1954-04-28
Abstract: A process in which a hydrocarbon drying oil is produced by the polymerization of a diolefinic feed containing finely divided sodium as catalyst is characterized in that the feed is continuously passed through a first zone comprising an elongated tube, so that the feed is activated, and then through a second zone under reaction conditions, including residence time, such that a monomer conversion of at least 65 per cent is attained, the second zone being a tank containing a liquid mixture of feed and reaction product, and this liquid mixture then passed through a third zone comprising an elongated tube, wherein complete conversion of monomers is effected. The temperature of the mixture in the first zone may be raised gradually from room temperature to between 40 DEG  and 85 DEG  C., while the average residence time of the feed therein is from 5-60 minutes, while the second zone may be at 65 DEG -85 DEG  C. with average residence time of 1-10 hours; the temperature of the third zone may be between 65 DEG  and 85 DEG  C.  A specified polymerization feed comprises butadiene, styrene, straight-run mineral spirits, p-dioxane, sodium, and isopropyl alcohol.  The styrene may be continuously and separately fed into the second zone.
Patent GB-1533456-A (GB)
Title: Sawing
IPC: B23D51/04
Filed: 1976-08-16
Abstract: 1533456 Severing SIEMENS AG 16 Aug 1976 [20 Aug 1975 18 March 1976] 34085/76 Heading B3D Apparatus for sawing, for example, brittle material 30 such as semiconductor material, stone or quartz, comprises at least one elongate saw cutter 2 and a device for holding the material, the cutter being supported by leaf springs disposed transverse to the length of the cutter, first drive means for moving the cutter in the direction of the length of the cutter at a relarelatively high frequency small amplitude movement and second drive means for moving the holding device at a relatively low frequency large amplitude movement. The high frequency movement is between 50 and 2000 Hz with an amplitude of 0À01 to 0À3 mm., and the low frequency movement at about “Hz with an amplitude of between 50 and 100 mm. As described, a plurality of saw blades 2 having cutting edges provided with a diamond layer 4 or 6 are secured at one end to a tentering frame 8 and at the other end by a clamping block 10 fixed to the frame by screws 12, 14. An iron core 16 at one end of the frame 8 cooperates with a magnetic coil 18 and supply 22 mounted on a base 26 to effect the high frequency, small amplitude movement, the tentering frame being supported by leaf springs (60, ... 63, Fig. 2, not shown) in the base 26. The material 30 to be sawn is secured by adhesive 34 to an arm 36 mounted by a pivot 42 on a nut 54 engaging a screw 52 connected by gears 50 to a motor 48 for effecting the low frequency large amplitude movement. The arm 36 is movable about the pivot 42 by a lever 36 actuated by an hydraulic cylinder 44 to lower and raise the material 30 out of and into engagement with the blades 2. The blades are provided with apertures 82 so that the cross-section F1 at their edges is greater than the cross-section F2 at their centres so that the tensile stress is smaller at the edges of the blades than at their centres. In another embodiment, the high frequency small amplitude movement is effected magnetostrictively. The spacing between the saw blades may be maintained by a device 84 connected to the holding device 32 for the material to be cut and consisting of a comb, the back of which is below the teeth 88, ... 91 which extend upwardly between the blades and move downwardly as the depth of cut increases. In a further arrangement, the spacing device consists of two combs which are spaced apart a distance such as to be located one each side of the material to be cut and are connected to the drive for the arm 36 so as to move therewith.