baber/WOPTO huggingface dataset:
Patent GB-1407557-A (GB)
Title: Process for heating and sintering ferrous powder metal compacts
IPC: B22F3/10
Filed: 1973-08-17
Abstract: 1407557 Induction sintering of ferrous metal powder GLEASON WORKS 17 Aug 1973 [5 Sept 1972] 39005/73 Headings C7D and C7N Ferrous metal powder compacts are pre-heated to raise the outer surface only to at least 300F and then inductively heated to sintering temperature. The pre-heating is carried out by radiant heat preferably to above 400F but below the sintering temperature and the compact may be cooled to room temperature prior to induction heating in a field of at least 1K Hz. After attaining sintering temperature by inductive heating e.g. 1800- 2500F the temperature may be maintained by radiant heating to complete the sintering. The pre-heating of the surface of the compact reduces or eliminates the incubation period of the powder compact in a low frequency induction field and consequently sintering temperature is reached more quickly. As shown in the Figure a continuous process of pre-heating, induction heating, radiant heating and temperature adjustment of the sintered compact to 1500-1900F for final press forming can be carried out. The compact is formed by mechanical or isostatic pressing of a mixture of Fe and graphite powder e.g. Fe + 0.2-0.6 per cent graphite and the process is used for the production of bevel and spur gears.
Patent GB-363149-A (GB)
Title: Improved manufacture of sodium cyanide
IPC: C01C3/00
Filed: 1930-12-29
Abstract: Sodium cyanide is obtained by the action of nitrogen at a high temperature, for example 750-850 DEG  C., on a briquetted mixture of carbon with sodium carbonate, bicarbonate or the like and sodium chloride, the amount of sodium chloride admixed being up to \ba1/4\be to \ba1/5\be of the amount of soda contained in the mixture.  The nitrogen may be preheated to a temperature above that of the solid reaction mixture; for example nitrogen heated to 1000 DEG  C. may be passed over the solid reaction mixture heated to 750 DEG  C.  The sodium chloride may be added in the form of rock salt.
Patent GB-830573-A (GB)
Title: Improvements in or relating to electrostatic precipitators
IPC: B03C3/78
Filed: 1957-12-17
Abstract: 830,573. Electrostatic precipitation. RESEARCH-COTTRELL Inc. Dec. 17, 1957 [Dec. 17, 1956], No. 39183/57. Class 39(1). In an electrostatic precipitator, a liquid distributor for supplying wash liquid to the surfaces of a vertically disposed collecting plate electrode comprises liquid - receiving means coextensive with the upper end of the electrode and retaining liquid received from a reservoir tank and means for confining liquid which is arranged to overflow from the liquid-receiver so that it accumulates above the upper edge of the electrode and is distributed therefrom to the surfaces of the electrode. As shown in Fig. 1, the electrostatic precipitator comprises parallel collecting plate electrodes 32 supported by frames 34, 36 and disposed between them, rows of discharge electrodes 24 supported in a framework 26 which is suspended from insulating members 28. Flushing liquid is supplied through elongated tanks 44, each of which is provided with an inlet 46 and a plurality of overflow pipes 60, one for each electrode 32. Impurities can be periodically removed from tanks 44 through discharge openings, provided with valves 50, in the bottom of the tank. The liquid is conveyed to individual electrodes 32 by means of a pipe 60, a flexible conduit 64 and a liquid distributer 40. This distributer may be in the form of a pair of troughs 70, Fig. 6, one on either side of electrode 32 and spaced therefrom by a plurality of wire spacers 76. The outer walls of the troughs are joined to form an integral domed cover. Liquid from pipe 68, connected to conduit 64, is deflected by spray plate 80, or a wedge-shaped piece of metal inserted in the open end of pipe 68 into troughs 70 from whence it overflows to trickle down opposed faces of the electrode. The troughs are supported by end plates 72 secured to frame members 36. In a modification, the distributer comprises a trough 84, Fig. 9, provided with a central bottom opening defined by depending flanges 88 or a conduit 100 provided with overflow outlets 102. Liquid from conduit 64 is fed into pipe 100 through the ends thereof. Instead of pipe 100 a second U-shaped trough, Fig. 7 (not shown), may be used. In a further modification, the distributer comprises a pipe 104 provided with overflow outlets 110 and a canvas wick 114 separated from the pipe by a helical wire 112. The pipe is supported between end plates 108 and the wick is held in position by two rods 116 so that its ends are adjacent opposed faces of electrode 32.
Patent GB-1371373-A (GB)
Title: Energy imparting reactions
IPC: C07D307/93
Filed: 1971-08-20
Abstract: 1371373 Reactions of santonin JOHNS HOPKINS UNIVERSITY 20 Aug 1971 [28 Aug 1970] 39238/71 Heading C2C A chemical change in santonin to produce for example lumisantonin is brought about by decomposition in the presence of the santonin of a "chemical electronic energy generator" which decomposes to give a product in an electronically excited energy state, this excitation energy then causing the chemical change in the santonin. The chemical energy generator substance may be trimethyl-1-2-dioxetane (exemplified), phthalic hydrazide, trimethyl-2-oxaoxetane. Lumisantonin may be prepared by heating a degassed benzene solution of santonin (0À1M) and trimethyl 1-2 dioxetane (0À3M).
Patent GB-863714-A (GB)
Title: Process for preparing polymers of bis(2:3-epoxycyclopentyl) ether
IPC: C08G59/24
Filed: 1957-12-18
Abstract: 863,714. Polymerized bis (2 : 3-epoxycyclopentyl) ether. UNION CARBIDE CORPORATION. Dec. 18, 1957 [Dec. 20, 1956], No. 39330/57. Class 2(5). Solid resins are made by polymerizing bis (2 : 3-epoxycyclopentyl) ether in the presence of an alkali metal hydroxide, a quaternary ammonium compound, or an etherate or amine complex of a metal halide Lewis acid as a catalyst, at a temperature between 25‹C. and 250‹C. Preferably the epoxide and catalyst are first mixed at 0‹-30‹C., the mixture then heated to 50‹-160‹C. to form a gel and the gel cured at 100‹-250‹C. The catalyst may be added dissolved in an organic solvent or in water. The resinforming mixtures are useful in the manufacture of coating compositions (with or without a solvent), conduits for carrying hot fluids, tools and dies. Specification 812,374 is referred to.
Patent GB-889908-A (GB)
Title: Improvements in vacuum cleaner attachments
IPC: A47L9/24
Filed: 1959-11-20
Abstract: 889,908. Suction nozzles. PUL-VAC Inc. Nov. 20, 1959 [Nov. 24, 1958], No. 39405/59. Class 8(1). [Also in Groups XXV and XXIX] A section nozzle comprises a lower housing and an upper housing and conduit; the lever housing containing a conduit 22 with means for oscillating a spring mounted beater 24 in the mouth 23 of the nozzle The means for oscillating the spring 76 comprises a valve head 71 made of a resilient material such as rubber, actuated in an upstream direction by a spring 56 surrounding a post 53, held central by conical segments 54, whose free ends are bent inwards and which are formed integral with the hollow sleeve 51, and an unloading valve comprising a sleeve 61 actuated in an upstream direction by a spring 67, which is weaker than spring 56. Before suction commences the valve head 71 will be pressed hard against the spring 76, thus resiliently holding the beater 24 to one side of the suction nozzle mouth 23. Under the action of its spring 67, the sleeve 61 will have travelled in an upstream direction and its valve seat 64 will have sealed off the inner conduit by contact with the annular shoulder 73 of the valve head 71. The outer annular space between the sleeve 61 and the conduit 22 is sealed by a rubber bellows 62, one end of which is affixed to the sleeve, the other being attached to the conduit 22, so that when suction commences, the differential air pressure forces the valve head 71 and the sleeve 61 in a downstream direction against the combined action of the springs 56 and 67. The valve head is stopped by the post 53 and its matrix reversed under the action of its spring 56, while the sleeve continues to move away from the valve head 71, for the air and dust to travel downstream to the dust bag. At the same time the beater 24 has, under the action of the spring 76 reversed its position in the mouth 23 of the nozzle and later, depending on the relative strengths of the two springs 56 and 67, the spring 76 is again struck by the valve head 71, and the sleeve following behind seats on the valve head 71 and the cycle is repeated. The downstream end of the spring 67 bears against a nut 68 adjustable along the outside of sleeve 51 and serves to vary the effective strength of spring 67 and the relative upstream speeds of the valve head 71 and the sleeve 61 and hence the extent of the valve opening. The suction impulse components and beater may be removed and the vacuum cleaner head used in a conventional manner.
Patent GB-1153600-A (GB)
Title: Improvements in or relating to Glass
IPC: C03C3/068
Filed: 1966-09-02
Abstract: 1,153,600. Optical glass. CARL-ZEISSSTIFTUNG, [trading as JENAER GLASWERK SCHOTT & GEN.]. 2 Sept., 1966 [4 Sept., 1965], No. 39426/66. Heading C1M. Optical glasses which are free from thorium oxide and beryllium oxide, having an optical range of which the upper limit is defined by the following values of refractive indices (#d) and AbbÚ values (#d) #d 1À693 #d 55 #d 1À761 #d 41 #d 1À750 #d 37 have the composition:-SiO 2  18-25 parts by weight; B 2 O 3  7-15; SiO 2  + B 2 O 3  23-35; BaO 27-50; La 2 O 3  3-20; CdO 0À5-10; ZnO 2  0À5-5; CdO + ZnO 2  2-23; the balance being compatible constituents but excluding any content of Pr 2 O 2 , Nd 2 O 3 , Ho 2 O 3  or Yf 2 O 3 . TiO 2  and/or Ta 2 O 5  up to a total of 6 parts by weight, Al 2 O 5  and/or WO 3  up to a total of 1 part by weight, lead up to a total of 18 parts by weight, and alkali metal oxide up to a total of 1 part by weight may be included. The glasses may be modified in that up to 8 parts by weight of the BaO may be replaced by CaO, SrO, ZnO, up to 2 parts by weight of MgO, separately or in admixture. As 3 O 3  may be added as fining agent.
Patent GB-1366492-A (GB)
Title: Magnetic tape apparatus
IPC: G11B15/67
Filed: 1971-08-23
Abstract: 1366492 Video magnetic tape apparatus AMPEX CORP 23 Aug 1971 [24 Aug 1970] 39480/71 Heading G5R A helical-scan magnetic tape apparatus includes a guide drum 26, entrance and exit guides 27, 31 parallel to the drum 26, and guide posts 23, 33 for guiding the tape 13 to and from the guides 27, 31 respectively and mounted perpendicular to a top plate 51 of the apparatus; the drum 26 and guides 27, 31 being tilted about a diametrical axis of the drum 26, which axis is parallel to the top plate 51 and bisects the wrap angle subtended by the tape wrapped round the drum 26; the inclination of the drum 26 and guides 27, 31, and the position of the guide posts 23, 33 being such that the centreline of the tape follows a planar path substantially parallel to the top plate 51. The inclination of the drum 26 and guides 27, 31 may be changed slightly by means of a solenoid 86 acting on an extension 88 attached to the drum 26, so that when the tape is also stopped a single track is scanned to produce a stop-motion effect. The drum 26 contains two heads 61, 62 mounted on a rotatable bar 59 and coupled to concentric coils 133, 134 inset into the face of a rotatable transformer half 131 of ferrite material. A similar, stationary transformer half 132 is spaced from the half 131. Switching of the heads 61, 62 is controlled by two magnets (146), (147), Fig. 9 (not shown), inset into the bar 59, which are detected by picking tips (151) connected to a coil 148. The rotational speed of the bar 59 is controlled by a tachometer disc (156) having a number of peripheral teeth (157) rotating adjacent corresponding teeth (159) in a stationary circular plate (158). A varying signal is generated in a pick-up coil (164). An autothreading arrangement is provided whereby a supply reel 12 containing tape 13 having a wider, relatively stiff leader 14 is initially driven by a retractable puck 16. The leader 14 is stripped by a wire finger 122 and driven along a path defined by guides 17, 21-24, 27-29, 31-34, 38, past heads 19, 36, 37 to a capstan 39 and pinch roller 41. The edge of the tape is guided by flanges 71, 72 on the guide posts 23, 33 and by a guide 81 secured to the drum 26 at the midpoint of the wrap angle. The tape is wound on a motor-driven take-up reel 43 with a rubber-surfaced hub and hubengaging fingers 44. A transistor circuit 47 detects an aluminium-coated portion of the tape, and causes the capstan 39 and roller 41 to be engaged, and the puck 16 to be retracted. The supply reel 12 is relasably secured to a turntable (102), Figs. 6, 7 (not shown), by latch arms (103) which engage an internal flange (106). The reel 12 has peripheral flanges (98), (99) spaced to retain the wider leader portion 14 on the wound-up reel. A brake on the turntable (102) is coupled to a tension sensing arm 18 so that tape tension may be controlled. The reel and hub assembly is claimed in Specification 1,366,491 (see Division F2).
Patent GB-1503517-A (GB)
Title: Electrostatic accelerators
IPC: H05H5/02
Filed: 1974-09-10
Abstract: 1503517 Ion beam tubes SCIENCE RESEARCH COUNCIL 3 Sept 1975 [10 Sept 1974] 39514/74 Heading H1D In the accelerating tube of an electrostatic particle accelerator, particles at the periphery of the path are trapped by the provision of an axially extending zone Y, Fig. 4, which is of uniform potential and includes annular trapping electrodes-15 and 16, as shown-coaxial with the tube and held at different potentials, whereby the injection of secondary electrons into the particle stream by the trapped particles is reduced. The uniform axial potential is provided by the interconnected electrodes 10, 14, 17, and 2<SP>1</SP>, the trapping electrodes 15 and 16 being held at potentials of opposite sign with respect to the uniform potential, to remove peripheral particles of both signs. The tapering of the outer surfaces of the electrode pairs 10, 2<SP>1</SP> and 15, 16 tends to direct particles towards the tube axis, and every ninth electrode 9 in the accelerating portion of the tube is similarly tapered on each surface 9a, 9b for the same purpose. As shown, the trapping electrodes 15 and 16 have smaller central apertures than the other electrodes, but are provided with additional sector-shaped apertures surrounding the central aperture (15b, Fig. 1B, not shown) to facilitate pumping out of the tube. In a modified arrangement (Figs. 5 and 6, not shown), the electrodes 15 and 16 are in the form of centrally apertured mesh electrodes, the interposed electrode 17 having a central aperture of the same size as that of electrodes 15 and 16. The titanium accelerator electrodes 8 have their externally projecting edges provided with spark rings (6, Fig. 3b, not shown) which themselves carry detachable frames (20, Fig. 3a, not shown) within which the resistors (22, 23, 24) of the resistor chain are mounted. The electrodes are separated by ceramic rings 3 which, to ensure minimum charge build-up on the insulator surfaces, are undercut, at an angle of 60  10 degrees to a plane normal to the tube axis, the undercut regions being joined by 180 degree grooves.
Patent GB-1077134-A (GB)
Title: Positioning device
IPC: G05B19/04
Filed: 1964-09-29
Abstract: 1,077,134. Machine tool details. SHEFFIELD CORPORATION. Sept. 29, 1964 [Sept. 30, 1963], No. 39666/64. Heading B3B. [Also in Division G1] Apparatus for locating a circular workpiece accurately on a work-table with respect to an axis of rotation comprises means for measuring its location in four angular positions, e.g. at 0 degrees, 90 degrees, 180 degrees and 270 degrees, comparing the 0 degrees and 180 degrees (and 90 degrees and 270 degrees) signals, and moving the worktable laterally along each of two diametrical axes until the 0 degrees and 180 degrees (and 90 degrees and 270 degrees) position signals are equal. As shown (Fig. 1), a workpiece 13 is fixed to a worktable 12 mounted on a rotatable support 11 above a base 10. The distance of the workpiece from a datum position is measured by a feeler gauge 15. Located round the support 11 are four fixed switches 20-23 (Fig. 5) defining the 0 degrees, 90 degrees, 180 degrees and 270 degrees positions respectively. The support 11 and assembly 12, 13 are rotatable about a fixed axis 14 by a motor 24, the support carrying a cam 17 which operates each of the switches 20-23 in turn. A timing mechanism is manually operated to initiate an adjusting cycle by energizing motor 24. When switch 20 is operated by cam 17 the signal from feeler 15 is recorded on a first potentiometer slider: when switch 22 is operated the signal from feeler 15 is recorded on a second potentiometer slider, the two potentiometers being connected in a bridge circuit whose output signal, representing the average of the two signals, is used to energize a motor 41 which moves the turntable 12 and workpiece 13 along the 0-180 degrees diameter until the two signals are equal. Similar action takes place when switches 21, 23 are operated, and the timing mechanism continues to produce lateral displacements until the workpiece is symmetrically located with respect to the two diameters defined by motors 41, 42. In another embodiment (Fig. 11, not shown), the height of the upper surface of the workpiece is sensed by a further feeler gauge at four locations and the axis of the work-table tilted to make the surface horizontal, utilizing two further motors located at right angles which tilt a carrier member mounted between the worktable and the rotatable support, by means of a part-spherical bearing.
Patent GB-1091664-A (GB)
Title: A method of manufacturing plates for use in electrical storage batteries
Inventor: SMITH DEXTER WILLIAM
IPC: H01M4/26
Filed: 1964-09-30
Abstract: 1,091,664. Battery plates by cold welding. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug. 24, 1965 [Sept. 30, 1964], No. 39752/64. Heading B5A. Battery plates are manufactured by placing metal powder on a grid, e.g. of silver, treating the powder with an acid which removes any oxide film from the particles, so as to unite the particles by cold welding, the reaction of the acid with the particles also liberating a gas causing the heated particles to swell, and then pressing the swollen mass to the required size, e.g. in a die. A filler may be added to the powder and removed after cold welding, e.g. by leaching. The metal may be zinc or cadmium, in which case hydrochloric acid is used, or lead, in which case acetic acid is used. After leaching, the plate may be washed, e.g. in acetone or alcohol, to remove all traces of water. The plate may be the negative for an alkaline battery. The process may be carried out continuously on apparatus comprising a conveyer, means for feeding a grid on to the conveyer, means for covering the grid with the mixture, a movable belt close to the conveyer which may be soaked in acid and means for pressing the mixture on to the grid.
Patent GB-354396-A (GB)
Title: Improvements in railway signals
IPC: B61L3/04
Filed: 1930-10-27
Abstract: 354,396. Track apparatus actuating signals other than on trains ; audible signals. SHAW, H. A. M., 1, Station Terrace, Thornaby-on-Tees, and SHAW, W. H., Holgate Road, York. Oct. 27, 1930, No. 39856/29. [Class 105.] Relates to track apparatus for giving an audible signal corresponding with the setting of the semaphore signal comprising a treadle 2 depressed by the train and connected by linkage to the piston of a compresser 4 which provides the blast for operating one of two audible signals 6 or 7 depending on the position of a valve 9 located in the discharge pipe 5 and set in accordance with the position of the semaphore signal. According to the invention the linkage includes an energystoring device with a trip mechanism to give a final rapid stroke to the compresser. The trip mechanism shown comprises a sleeve 16, connected to the treadle, which slides on a spindle 13 to compress a spring 17 against a collar 15 on the spindle ; the collar is laterally pressed by a spring guide 19 so as to be held by a stop 18 until the sleeve 16 is moved sidewise by a cam incline 20, whereupon the collar 15 moves rapidly under the action of the spring 17 to actuate the compresser piston.
Patent GB-1117129-A (GB)
Title: A cosmetic preparation
Inventor: STRIANSE SABBAT JOHN
IPC: A61Q5/06
Filed: 1965-09-18
Abstract: A hair grooming composition comprises a polyamide, which is the reaction product of an aliphatic polycarboxylic acid and an alkylene polyamine and has an average M.W. between 2000 and 14,000, at least partly dissolved in a liquid, oily, non-polar solvent consisting of or including a substance having a chain of at least 10 C atoms in its molecule, e.g. mineral oil.  The composition may include an alcohol, a fatty acid, or a glycol ester as a co-solvent, and a fatty acid amide having a chain of at least 10 C atoms as a stabilizer.ALSO:Aerosol hair grooming compositions comprise a polyamide material at least partly dissolved in a liquid, oily, non-polar solvent consisting of or including a subtance having a chain of at least 10 C atoms in its molecule, the polyamide material being a reaction product of an aliphatic poly-carboxylic acid and an alkylene polyamine and having an average M.W. between 2000 and 14,000 and a suitable propellant.  A typical composition comprises a polyamide of average M.W. 8000, ethyl alcohol, lanolin oil, propylene glycol monolaurate, and perfume together with trichloromonofluoromethane and dichlorodifluoromethane.ALSO:A hair grooming composition comprises a polyamide material at least partly dissolved in a liquid, oily, non-polar solvent consisting of or including a substance having a chain of at least 10 C atoms in its molecule, the polyamide material being a reaction product of an aliphatic poly-carboxylic acid and an alkylene polyamine and having an average M.W. between 2000 and 14000.  The liquid, oily, nonpolar solvent may be a mineral oil. The compositions may include an alcohol, a fatty acid, or a glycol ester as a co-solvent and a fatty acid amide having a chain of at least 10 C atoms as a stabilizer. The compositions may be in the form of gels, lotions, brilliantines, emulsions, or aerosols.  The invention also comprises a method of grooming hair comprising the step of applying the above hair grooming composition to the hair.
Patent GB-1046817-A (GB)
Title: Electrical connectors
Inventor: NELSON ARTHUR LEE
IPC: H01R13/703
Filed: 1964-10-01
Abstract: 1,046,817. Two-part couplings. ELECTROOCEANICS. Oct. 1, 1964, No. 40027/64. Heading H2E. An electrical connector has an elongate plug 44, Fig. 2, of insulating material having at least one contact 46 arranged in its surface intermediate its ends, which engages tightly in a corresponding elongate socket 26 to make contact with corresponding contacts 30, either the plug, the socket, or both being of insulating material, and the socket having an opening additional to the one through which the plug enters through which any water in the socket can be ejected on insertion of the plug. The contacts 46 and 30 are in the form of split rings which may be arranged in the surface of the mating members, or may be partially embedded in the insulating material. The plug 44 is reinforced by conducting member 48. Shoulder 58 abutting against end 56 ensures alignment of the contacts regardless of whether the plug is inserted into the right- or left-hand side of the socket. The cross-sectional area of the plug may be slightly larger than that of the socket. In a further embodiment, Fig. 4 (not shown), a plurality of coaxially arranged contacts may be provided. The reinforcement of the plug may be provided by tubes 160, 162 connected to one of the contacts 147, the leads to the other contacts 145, 146 extending along the axis of the tube. In a final embodiment, Fig. 8 (not shown), a series of plug members, as described in the first embodiment, may be connected together to form a multi-pin plug to engage in a corresponding socket, correct engagement being ensured by a locating pin and socket.