baber/WOPTO huggingface dataset:
Patent GB-1319931-A (GB)
Title: Method and apparatus for controlling gas cutting operation
IPC: B23K7/10
Filed: 1972-01-14
Abstract: 1319931 Controlling a gas cutting operation TANAKA SEISAKUSHO KK 14 Jan 1972 [13 Sept 1971] 1820/72 Heading F4T A method for controlling a gas cutting operation in which a gas cutting blow-pipe 7 is moved over a workpiece under control of motors 46, 48 comprises detecting variations in the luminance of an oxidizing reaction portion of the gas cutting flame by means of a photo-sensitive element 22 mounted on the blow-pipe 7, the element 22 producing a corresponding variable output voltage on leads 22<SP>1</SP> which is fed to an amplifier 32 (Fig. 7) and wave-shaper 34 and is then compared in a comparator 36 with reference voltages V 1 , V 2 , the arrangement being such that if the desired voltage lies outside the range defined by V 1  and V 2  then a signal is fed to a control unit 38 which controls a drive control 44 for the motors 46, 48 so as to vary the speed of movement of the blow-pipe 7 over the workpiece for optimum gas cutting conditions. If the cutting flame should miss-fire or flame out then there will be a sudden fall in the voltage derived from the element 22 and this will cause a missfire control circuit 40 to shut-off the oxygen and fuel supplies to the blow-pipe 7 by way of valves 61, 63, 65, stop the motors 46, 48 and operate an alarm 42. The blow-pipe 7 (Fig. 2) comprises a nozzle 10 having a central path 12 for cutting oxygen and a plurality of holes 13 surrounding the central path for providing a preheating flame. The preheating flame is fed with oxygen from a supply hose 19 and with fuel gas from a hose 21. The blow-pipe 7 also has a central hole 15 for supply of cutting oxygen from a hose 17 to the path 12 aligned therewith and the element 22, which may be a photo-diode, is mounted behind a protecting glass 24 so as to be in visual alignment with the cutting flame at the end of the nozzle 10.
Patent GB-1089512-A (GB)
Title: Apparatus for injecting a secondary fluid into a primary fluid
IPC: G05D11/00
Filed: 1964-01-22
Abstract: 1,089,512. Mixing fluids in flow. P. G. TACCHI. Jan. 15, 1965 [Jan. 22, 1964], No. 1854/65. Divided out of 1,089,511. Heading B1C. [Also in Division Fl] In apparatus for dosing a primary fluid flow with a secondary fluid the primary fluid enters at 13 and passes through high pressure chamber 37 and adjustable restrictive passage 36 to low-pressure and mixing chamber 38 the chambers are separated by a pressure-responsive device such as a bellows 29 to which is attached a pumping device comprising a plunger 18 and cylinder 19, which injects secondary fluid through passage 28 into chamber 38. In operation the mixture outlet 14 is connected as by a flexible hose to a jet or spray gun and a dose of secondary fluid (e.g. detergent) will be injected each time pressure across the bellows is equalized by closure of the outlet valve. The bellows may be replaced by a piston and the cylinder of the pumping device may be attached to the bellows or piston and cooperate with a fixed plunger.
Patent GB-178526-A (GB)
Title: Improvements in and relating to shakers and conveyors
IPC: B65G27/00
Filed: 1921-01-12
Abstract: 178,526. Orr, L. R., Robins, L. A. C., and Goodwin, A. R. Jan. 12, 1921. Packeting granular materials in formed receptacles. -Belt and like conveyers are provided with means for laterally supporting bags or containers thereon and means adapted to impart vibrations or oscillations to the belt &c. whereby powdered substances may be shaken down and compacted with the containers while these are being conveyed from an automatic weighing and filling machine. A frame 1 carries longitudinal members 2 with pulleys 3, 3<a> around which a flexible endless band 4 passes. Either or both pulleys may be horizontally adjustable, the bearings being slidably mounted upon the members 2 and the position adjusted by screws 5. U- or W-shaped members 7 on the belt afford lateral support to the containers carried, and the upper reach of the belt passes over a platform 8. The platform is mounted upon springs 9 normally tending to thrust it upward, oblique springs 11 affording lateral stability. Belts 20, one at each side of the platform 8 pass over pulleys 12, and are secured at their lower ends to tensioning-devices 17. A double-armer lever 14, with rollers 15 at each end, is rotated so that the rollers contact with the belts 20 and draw the platform down against the action of the springs and release it, thereby imparting a vertical jigging motion. The tensioning-device 17 is provided with a hand-lever 18, by which the motion may be adjusted by drawing the ends closer together. The conveyer may be provided with a delivery platform 21. Two or more conveyers may work side by side. In a modification, the vibrating motion is supplied by the rotation of an eccentrically revolving weight. The containers may be supported longitudinally by clips secured to the outer edges of the U- or W-shaped members and connected by rubber cords or tension springs, or partitions may be employed. The U-shaped members may be replaced by laterally-arranged endless belts. If the containers are provided with filling- funnels, these are removed from the containers by the action of inclined travelling ways or belts arranged in the path of the funnels.
Patent GB-676358-A (GB)
Title: Improvements in and relating to the production of ethylene oxide
Filed: 1949-01-24
Abstract: Ethylene oxide is produced by contacting a mixture of ethylene, oxygen, nitrogen and from 2 to 10 per cent by volume of carbon dioxide at elevated temperature with a catalylic material comprising an intimate admixture of separately prepared silver oxide and finely-divided siliceous material.  The siliceous material is selected from: silica; quartz; silicates, for example sodium aluminium silicate, which may be fused; fused silica, quartz or silicate glasses.  Preferably the siliceous material has a particle size of less than 100m .  The catalyst may be unsupported but is preferably carried upon a granular, porous material, for example, granules of firebrick.  The process may be carried out at atmospheric or elevated pressure.  The preferred pressure is about 10 atmospheres and the preferred temperature in the range 200-300 DEG  C.  The preferred ethylene concentration is not more than 3.5 per cent. Preferably the reaction is carried out continuously, a portion of the exit gas, after removal of ethylene oxide, being recycled to the converter to give the desired concentration of carbon dioxide.  In the examples mixtures containing various proportions of ethylene, oxygen, nitrogen and carbon dioxide are contacted with the catalytic material to produce ethylene oxide.ALSO:Catalysts for the production of ethylene oxide from a mixture of ethylene, oxygen, nitrogen and carbon dioxide consist of an intimate admixture of separately prepared silver oxide and a finely-divided silicious material selected from silica, quartz, silicates, for example sodium aluminium silicate, which may be fused; fused silica, quartz or silicate glasses.  The catalyst may be unsupported but is preferably carried upon a granular porous material, e.g. granules of firebrick.
Patent GB-160046-A (GB)
Title: Improvements in or relating to spoons and forks
IPC: A47G21/02
Filed: 1920-01-21
Abstract: 160,046. Vickers, N. B. Jan. 21, 1920. Spoons.-The handles A, Figs. 1 and 4, of spoons are stiffened by dishing them longitudinally into a U, V or like shape in cross-section, the hollow merging into the curve of the bowl and extending to the end of the handle or joining a flat or transversely bent part. The spoon blanks are cut from rough-buffed metal, stamped and finished by " dollying " or " mopping," with or without filing.
Patent GB-1177622-A (GB)
Title: Improvements in or relating to Low Pass Active Resistance-Capacitance Filters
Inventor: FRANKLIN DONALD PETER
IPC: H03H11/12
Filed: 1966-01-15
Abstract: 1,177,622. Filter networks; transistor lowpass amplifiers. ELECTRIC & MUSICAL INDUSTRIES Ltd. 13 Jan., 1967 [15 Jan., 1966], No. 1984/66. Headings H3T and H3U. A low-pass filter has direct-current paths between respective input and output terminals and comprises passive resistive and capacitive elements and a network containing an active element connected from one of said paths to the other, which network does not transmit substantially any direct current and has a negative admittance for alternating current only. As shown in Fig. 1 the voltage source V is applied to a two-port admittance network YA and the output current i is taken from two-port admittance network YC, these networks being formed entirely of passive and capacitive elements, the negative admittance network -YB including an amplifier or negative impedance converter. Since the network -YB does not transmit substantially. any direct current the D.C. output level of the filter is not subject to drift due to the active element. In the embodiment of Fig. 6 network -YB is obtained by positive feedback over the amplifier G and is thus constituted by the admittance presented between the input terminals of the amplifier. The amplifier G is a high-gain amplifier with two inputs, viz. a reversing input r and a non- reversing input nr, which produce outputs respectively out of phase and in phase. The first stage of the amplifier may comprise a long tail pair of transistors in which the two transistors are formed on the same semi-conductor slice. Further, the whole amplifier G may be formed as an integrated circuit. The negative feedback via resistances (A-1) Rf and Rf stabilizes the amplifier gain to the value of A.
Patent GB-1394485-A (GB)
Title: Olefinically unsaturated benzylamine derivatives
IPC: B01J49/00
Filed: 1973-01-15
Abstract: 1394485 Desalinating brackish water COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANISATION 15 Jan 1973 2026/73 Heading C1C [Also in Divisions C2 and C3] Desalination of brackish water is effected by means of an ion exchange resin containing a polymer formed from a monomer of Formula (I) (in which each of R<SP>1</SP> and R<SP>2</SP> is a mono-olefinically unsaturated group containing 2 to 6 carbon atoms, and each of R<SP>3</SP> to R<SP>7</SP> is H, halogen, or an alkyl, substituted alkyl, aryl, substituted aryl, nitro, dialkylaminoalkyl or -CH 2 NR<SP>1</SP>R<SP>2</SP> group, provided that not more than two and not less than one of R<SP>3</SP> to R<SP>7</SP> is/are the group
Patent GB-1063259-A (GB)
Title: Process for eliminating from a solution anions derived from hydracids
Inventor: GUTH JEAN LOUIS
IPC: B01D15/04
Filed: 1965-01-18
Abstract: Crystals of hydroxysodalite 3(Al2O3, 2SiO2, Na2O) 2NaOH of size 10-50 m  are crystallized from the reaction product of one gm. mole of amorphous silica, one gm. mole aluminium hydroxide, five gm. moles of caustic soda and thirty-five gm. moles of water heated to 325 DEG  C. for five days in a copper-lined autoclave.ALSO:Hydroxy sodalite 3(Al2O3, 2SiO2, Na2O) 2NaOH is used as an anion exchange in a closed copper tube for alkaline solutions containing hydracid anions at temperatures of 200 DEG C or more.
Patent GB-572760-A (GB)
Title: Improvements in or relating to apparatus for feeding articles from a container
IPC: B65G47/14
Filed: 1941-02-19
Abstract: 572,760. Feeding cartridges from a hopper. PARRY, F., and MOLINS MACHINE CO., Ltd. Feb. 19, 1941, No. 2269. [Class 78 (i)] [Also in Group XXI] A hopper 24 for feeding cartridges 2 is provided with an end wall 37 or 37c and a bottom wall 116 both sloping downwards towards an outlet 117, the articles being arranged to move sideways towards and through the outlet, and an endless conveyer 25 being provided to rotate the articles as they move towards the outlet. The endless belt 25 supports only the larger diameter or body of each cartridge, this part being kept clear of the bottom wall 116, and the part of smaller diameter may, make contact with a stationary drag-plate 129 so as to. obviate the tendency for the cartridges to lie aslant of the conveyer. As the cartridges move on the conveyer belt towards the outlet they rotate in the opposite direction to the conveyer rollers, and as the front cartridges pass through the outlet 117 others move to the rear to take their place. The conveyer belt 25 passes over pulleys 118- 123, the pulleys 120, 121 causing a gap between the section 124 in the hopper and a section 125 which transfers the cartridges from the outlet 117 to a fluted drum 4 as described in Specification 572,761, [Group XXI]. The pulleys 118, 119 are positively driven by a chain 73 from a band or motor-driven shaft 71. Some of the pulleys are flanged to prevent any tendency for the conveyer belt to wander laterally. The cartridges on the transfer section 125 are maintained in contact with the conveyer belt by means of a fixed guide or guides 228. According to the Provisional Specification the invention can be used for any articles of circular or substantially circular cross-section.
Patent GB-110274-A (GB)
Title: Improved Means for Manipulating Skips or Buckets.
IPC: B61J1/10
Filed: 1917-02-15
Abstract: 110,274. Wrightson, T. G., Ringquist, J. M., and Head, Wrightson, & Co. Feb. 15, 1917. Platform load-handling machines and appliances; fluid-pressure-actuated apparatus. - A table D rotatably mounted on a stem C in a carriage. A supports a skip E and is raised by the hydraulic ram I to bring the stalk of the skip into position for engagement by the hook of the charger bogie.
Patent GB-1372641-A (GB)
Title: Cooling apparatus for semi-conductor elements
IPC: H01L23/427
Filed: 1972-01-18
Abstract: 1372641 Cooling electrical apparatus ROBERT BOSCH GmbH 18 Jan 1972 [19 Jan 1971] 2308/72 Headings F4U and F4S A semi-conductor element 1 is cooled by evaporative heat exchange with an electrically non-conductive liquid, e.g, halogenated hydrocarbon, contained in a cooling body 3 connected to a closed circuit comprising flow and return pipes 11, 14, a separator 6 spatially separate from and positioned above the body and connected at its upper portion by a pipe 18 to a vapour condenser 8. Vapour bubbles formed in the body 3 convey the liquid to the separator 6 and the upper end of pipe 12 is formed as a vapour diffuser 22. The condenser utilizes ambient air passed thereover by a fan 7. The return line 14 may include a pump and/or an injector, Fig. 2, to induce condensed liquid thereinto directly from the condenser. The element 1 is placed in thermally conductive position with its bed plate 2 on the body 3 which has an evaporation chamber 4 into which cooling ribs 5 protrude.
Patent GB-625467-A (GB)
Title: Improvements relating to electric direct current equipment for motor-driven coastal craft
IPC: H02J3/38
Filed: 1947-01-24
Abstract: 625,467. Self-contained systems depending on more than one source. DE HOOP N. V., A. Jan. 24, 1947, No. 2317. Convention date, May 4, 1943. [Class 38 (iv)] To reduce the total generator capacity required in a motor-driven coastal vessel having electrically-operated auxiliaries, means are provided whereby the supply circuits of those auxiliaries not requiring a particularly stable voltage, such as deck winches, can be segregated from the supply circuits of lighting and other constant voltage auxiliaries and fedespecially when the vessel is not under way-by a large capacity battery, which may be stowed on deck or in the tonnage-well. Separate generators are also provided for the two types of supply circuits. The installation shown comprises double-ended generators 11, 14; 12, 15 and 13, 16 and a battery 17, together with switchgear 18, 19 which allows the following alternative feeds for the separate lighting and power bus-bars 6, 7 : (1) battery supply to both the lighting and power bus-bars when the ship is idle ; (2) battery supply, assisted if necessary by either or both machines 15, 16, to the power load during loading or unloading of the vessel, one or other of machines then 12, 13 supplying the lighting load, and (3) supply to the lighting bus-bars and power bus-bars, respectively, by the shaft-driven machines 11, 14 when the vessel is under way, the battery floating on the power bus-bars. The machines 11-13 are self-excited compound machines with automatic voltage regulation and, respectively, provide separate excitation for the other machine of each set, which also has a differential series exciting winding to ensure that the battery takes a share of the load when the machines are running.
Patent GB-915716-A (GB)
Title: Manufacture of slivers or strands from thermoplastic materials, for example glass
IPC: C03B37/04
Filed: 1961-01-20
Abstract: 915,716. Glass fibres. COMPAGNIE DE SAINT-GOBAIN. Jan. 20, 1961 [Feb. 25, 1960], No. 2342/61. Class 56. [Also in Group IX] Glass fibres produced by centrifugal ejection of molten glass through apertures in a rotating body 1 are subjected to an acceleration causing a progressive increase in the velocity thereof until they are transformed into a substantially straight sliver (see also Group IX). The streamlets of molten glass are attenuated into fibres by combustion gases from a chamber 3 ejected through an aperture 4. Gaseous jets act on the streamlets through a slot 6 in a ring 5. A winding 7 on a support 8 heats the body 1 by induction. In one embodiment, Fig. 2, the spiral of fibres formed passes through parallels 13 which are rotated by rollers 14 at angular speeds increasing from top to bottom. In a modification, Fig. 3, a truncated cone-shaped, rotating drum is provided. In a further modification, Fig. 4, the body 1 has a conical cap 28 secured thereto and surrounded by an envelope 27 followed by a conduit 30, the decreasing crosssection causing an increase in the velocity of the gases. In the form shown in Fig. 7, a suction fan (not shown) reduces, through apertures 37, the pressure in a chamber 35. Rings 39 having an internal diameter which decreases from top to bottom are arranged beneath the chamber. An ejector 40 is fed with compressed-air. In a further modification, Fig. 8, air blowers 42 are arranged in rows on a cone-shaped hood 41, the velocity of air in each row being greater than that in the preceding upper row.
Patent GB-452963-A (GB)
Title: Improvements in sewing machines
IPC: D05B19/00
Filed: 1936-01-27
Abstract: 452,963. Sewing-machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.- (Singer Manufacturing Co.; Elizabeth, New Jersey, U.S.A.) Jan. 27, 1936, No. 2449. [Class 112] A sewing-machine, particularly of the single thread straw-braidsewing type having a wide variation of stitch length has a series of cams on the main shaft which are selectively rendered operative by the feed regulator to hold open the thread tension device for a period appropriate to each stitch length. The main shaft 5 has an eccentric working in a block 18 engaged by the forked end of a pitman 16 connected to an arm 8 for effecting the longitudinal movement of a fourmotion feed dog 4. A link 21, pivoted at one end 20 to the pitman and at the other end 22 to a lever 23 pivoted to the machine frame at 24, controls the length of the stitch, the forward end of the lever 23 having a slidable handle 26 with a detent 28 engaging a fixed rack 30. The thread-tension device comprises a block 31, adjustably fixed in the frame by a set-screw 33, and having a flat face co-operating with a flange 38 on a collar sliding on a spindle 35 under control of an adjustable spring 39. The spindle 35 has a yoke 44, carrying a roller 43, and is urged to the right by a strong spring 46. The roller 43 bears against a series of cam followers 48 pivoted on a lever 51 which is connected to the lever 23 by a pin 55 and slot 54. The followers 48 have cam engaging surfaces 49 at progressively increasing heights which are selectively engaged by four different cams 47<1> on the shaft 5 as the lever 23 is moved. When the lever 23 is set for the shortest stitch length, the roller 43 is directly engaged by a larger central cam 47 which opens the thread tension device for the minimum time, the other four cams keeping the tension device open for progressively longer periods. An adjustable collar 37 is provided on the spindle 39 and by varying the position of this collar and the position of the block 38 it is possible to vary the thread tension at each stitch from light to zero or from strong tension, due to the spring 46 acting through the collar 37, to light tension due to the spring 39 which acts directly on the flange 38. A shoulder on the spindle 39 pushes the flange 38 away from the face of the block 31 when the device is set to release the tension completely at each stitch.
Patent GB-625257-A (GB)
Title: Improvements in optical systems
IPC: G02B17/08
Filed: 1946-01-25
Abstract: 625,257. Optical systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Jan. 25, 1946, No. 2468. Convention date, May 26, 1941. [Class 97 (i)] . Fifth and/or higher order coma in an optical system is corrected, at least in part, by a correcting element having at least one aspherical surface and being " cupped " i.e. having regions in which the curvature on the two sides is in the same sense, the centres of curvature lying in the same side of, and at a finite distance from, the element. The correcting plate of a Schmidt system may be curved in this manner. Fig. 1 shows a correcting element having small paraxial power and regions between the lines II and II, II and the lines III, III and IV, IV, which are similarly curved, the centres of curvature being as shown. Fig. 6 shows a concave mirror S having at its centre Ms a generally spherically curved correcting element C, the centre of curvature Mc of which is preferably midway between the object V and the element. One or both surfaces of the element may follow a fourth degree curve. A numerical example of such a mirror system is given.
Patent GB-845713-A (GB)
Title: Improvements in or relating to centrifugal pumps
Inventor: MCALPINE THOMAS
IPC: F04D1/06
Filed: 1957-01-24
Abstract: 845,713. Centrifugal pumps. WEIR Ltd., G. & J. March 24, 1958 [Jan. 24, 1957], No. 2578/57. Class 110 (1). A pump assembly 1 is located within a cylindrical barrel 2, one end 3 of which is permanently closed, and is retained in position by a ring 6 engaged in an annular groove 5 near the opposite end of the barrel. A joint ring 7 is interposed between the adjacent end of the assembly and the ring 6, and an additional metal ring may be inserted between the rings 6 and 7. The open end of the barrel is closed by means of a removable cover fastened by bolts 9. The retaining ring may be split or alternatively screw-threaded, engaging a corresponding screw thread in the barrel. The invention is also applicable to pumps in which hydraulic balance is achieved by the use of opposed impellers.