baber/WOPTO huggingface dataset:
Patent GB-786740-A (GB)
Title: Production of potassium nitrate
Inventor: WHYNES ALLAN LEONARD
IPC: C01B21/084
Filed: 1954-06-23
Abstract: <PICT:0786740/III/1> Potassium nitrate is prepared by reacting potassium chloride with nitrogen dioxide in the presence of moisture to form potassium nitrate and nitrosyl chloride, reacting the formed nitrosyl chloride with concentrated sulphuric acid to produce hydrogen chloride and nitrososulphuric acid, treating the solution of nitrososulphuric acid in sulphuric acid with water to produce dilute sulphuric acid and nitrogen trioxide, and thereafter reacting the nitrogen trioxide with potassium chloride to form potassium nitrate. If desired, the nitrogen trioxide formed may be subjected to oxidation to convert any nitric oxide present to nitrogen dioxide before reactin with the potassium chloride.  As shown in the Figure, nitrogen dioxide is fed by line 1 to a container 2 and from thence by line 3 to a tower reactor 4 containing potassium chloride with 2.4 per cent moisture, fresh potassium chloride being supplied at 5 at potassium nitrate product being removed at 6.  The reactor may be provided with means for recirculating at least part of the effluent gases from the tower to the base thereof.  The remainder of the nitrosyl chloride is removed by line 7 and passed to a tower 8 fed with concentrated sulphuric acid from line 9 whereby hydrogen chloride, which is removed through line 10, and a solution of nitrososulphuric acid in sulphuric acid which is removed by line 11, are formed.  The nitrososulphuric acid is fed through line 11 to a column 12 through which water is passed through line 13 to produce dilute sulphuric acid which is removed at 15 and to form nitrogen oxides which are removed through line 14 and recycled to the container 2.
Patent GB-183564-A (GB)
Abstract: 183,564. Butler, A. J. April 23, 1921. Crochet hooks are provided with a scale marked along their length or with a hollow head containing a tape measure.
Patent GB-289291-A (GB)
Title: Goggles for use in playing golf
IPC: G02C9/00
Filed: 1927-07-11
Abstract: 289,291. Walker, N. S. July 11, 1927. Goggles.-Goggles for use in playing golf are provided with sight openings 3 in ar cpaque disc 2, which openings 3 are fitted with gravity operated shutters 4, so that the player may see the ball properly when driving, but is prevented from following its fight by raising his head, the shutters close the sight openings 3. The shutters are connected together by a cranked wire 6 so that they may be readily held in an open position if desired.
Patent GB-859453-A (GB)
Title: Improvements in or relating to electric contact spring assemblies
Inventor: SINCLAIR WILLIAM
IPC: H01H50/58
Filed: 1958-06-10
Abstract: 859,453. Electromagnetic relays. ERICSSON TELEPHONES Ltd. June 9, 1959 [June 10, 1958], No. 18496/58. Class 38 (5). A relay contact-spring set having moving contact-springs extending beyond the ends of the fixed contact-springs to engage slots in an operating-bar, has at least two of the moving contact-springs further extended and provided with narrow-lipped apertures to retain the operating-bar which has means for springing apart the lips of the apertures when urged laterally into engagement therewith. The operating bar 13 (Figs. 1 and 2) is slotted at 14, 15 on two faces 25, 26 and has sloped projections 17 on the face 24. The ends of the extended springs 1 engage in slots 14 and the bar is retained in apertures 11 (Fig. 5) in the further extended springs 2. The bar is inserted in the apertures by pressing the slots 15 into the narrow openings 10 of the apertures 11 so that the lips 21 thereof engage the sloping faces 18 of the projections 17 and are bent downward until they spring up again to engage the rear faces of the projections. The bar may be removed laterally after forcing apart the lips of the apertures. In an alternative arrangement (Figs. 6, 11, 12) the openings 10 are formed in the ends of the springs 2 and the bar 13 has wedge-shaped projections 27 on each side. During assembly the lip 23 of the opening 10 rides up the inclined edge 28 of the projection 27 on one side and the lip 22 rides down the edge 29 on the other side, the lips springing back into alignment after passing the projections 27. The apertures 11 may be triangular or semi-circular, Figs. 13, 14, 16 (not shown) or circular or shaped as shown in Fig. 15, with bars of similar shape having sloping slots instead of projections to guide the lips 21 or 22, 23.
Patent GB-1001569-A (GB)
Title: Improvements in and relating to a printed circuit board connector
Inventor: HERRMAN ADOLF LUDWIG
IPC: H01R12/50
Filed: 1962-05-15
Abstract: 1,001,569. Two-part couplings. BROWN ENGINEERING CO. Inc. May 15, 1962, No. 18551/62. Heading H2E. A pair of printed circuit boards, each with spaced, parallel contact strips on one face, are detachably linked by a bar carrying similarly spaced, double-ended, resilient contacts. In one embodiment, Fig. 2, contacts 46 are retained in recesses 30 by tabs 40 on the terminal lugs 36, the two circuit boards (not shown) being held at right-angles by being bolted against the upper and right-hand side face of the bar 29, respectively. In a modification, Fig. 4, the contacts 46 are held resiliently by spurs 50 engaging behind a central rib 48, and the two circuit boards 16, 18 are held against the parallel faces of the bar 14 by bolts 51. In another embodiment, Fig. 5, the bar 52 is bolted to one board 18, whilst the other board 16 is held between resilient contacts 68. The contact assembly is held to the bar by tabs 60.
Patent GB-274479-A (GB)
Title: Improvements in viscometers
IPC: G01N11/08
Filed: 1927-07-13
Abstract: 274,479. Nivling, W. A. July 13, 1926, [Convention date]. Testing viscosity of liquids.- Apparatus for continuously indicating and recording the viscosity of a liquid such as size comprises an air vessel and a restricted pipe through which the liquid is forced, the pressure of the air trapped in the vessel affording an indication of the viscosity. The liquid to be tested is supplied by a pipe 47 to a chamber 10 in a tank 7. The level of the liquid is maintained constant by an adjustable weir 9. the overflow passing away through a pipe 48. A pipe 12 connects the chamber 10 with a pump 13 which forces liquid into an air vessel 2 from which it returns to the chamber through a restricted pipe 18. The back pressure in the vessel 2, which varies with the viscosity of the liquid, is communicated by pipes 23, 26 to an indicating and recording instrument 25. If the pressure in the vessel 2 increases abnormally, a float 32 closes a valve in the cap 21 in order to protect the recorder from damage. The tube 18 may be changed in accordance with the liquid being tested. A temperature recording device is connected by a tube 38 to a thermo-sensitive unit 37, and makes a temperature record on the same chart. The pump 13 is driven bv an electric motor 15 through gearing 16, but the vessel 2 may be fed with liquid by different means. The application of the apparatus to machines for sizing yarn is described.
Patent GB-961047-A (GB)
Title: Automatic meter calibrator
Inventor: OLIVER BERNARD MORE
IPC: G01D13/02
Filed: 1961-05-23
Abstract: 961,047. Photo-electric calibration of electric measuring instruments. HEWLETT-PACKARD CO. May 23, 1961, No. 18664/61. Headings G1A and G1U. An arrangement for calibrating and printing a scale for meter fixed to a base member and designed to measure a physical condition applied thereto by connecting means from a source which is movably mounted by means which carry a master scale in association with a blank scale, comprises detecting means for tracking the indicating movement of the meter, printing means to reproduce the master scale readings on the blank scale, means to move the connecting means in synchronism with the tracking and printing means and means to alter the position of the movable mounting means in response to the output of the tracking means. In the arrangement described the tracking means for the meter indication is constituted by a light source, a half-silvered mirror and a pair of photo-cells rotated in exact concordance with the member connecting the source of the physical condition to the meter. In the application to the calibration of a voltmeter 13, voltage from a potentiometer 19 mounted in a housing 23 is applied by a contact member 21 carried by a rotatable shaft 27 to position the pointer 15 of the instrument 13. Secured to the shaft 27 is a housing 37 with a light-source 39, a half-silvered mirror 41 and spaced photo-cells 45 and 47, the arrangement being such that rotation of the pointer equal to that of the housing causes the beam to pass between the cells, and with unequal rotations of the pointer 15 and housing 37, the reflected beam is incident on one or the other of the cells 45, 47. The housing 23 is rotatable about the shaft 27 and carries a master-scale disc 31 with calibration marks to be printed on to a fixed photo-sensitive blank scale 33 by means of a light-source 53, lens 55 and slit aperture 57 mounted in a housing 51 connected to the shaft 27. If, on the rotation of the shaft 27, the pointer 15 does not take up a rotational position identical with that of the housing 37, the reflected light beam from the mirror 41 is incident on one or the other of the cells 45, 47 to operate a servomotor 35 to rotate the housing 23 and potentiometer 19 relative to the member 21 to vary the current through the voltmeter 13 to position the pointer 15 so that neither cell 45, 47 is illuminated The rotation of the housing 23 rotates the master scale 31 relative to the blank scale 33 so that the beam through the aperture 57 on to the photosensitive blank scale 33 the same non-linearities that are exhibited by the meter 13.
Patent GB-709071-A (GB)
Title: Improvements in or relating to calibrating devices for a liquid meter of the turbinetype
Inventor: HOOGENBOOM GERARDUS ANTONIUS
IPC: G01F25/00
Filed: 1951-08-08
Abstract: 709,071. Rotary meters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Aug. 8, 1951, No. 18703/51. Class 110(2) Means for calibrating a meter 3, by comparison with a standard meter 2, comprises speed-indicating means. preferably stroboscopic, and a valve 18 in a by-pass 17. around the meter 2, the degree of opening of the valve being shown. Large and small flows of liquid flow through a pipe 1 from a mains or storage tank respectively, under control of a threeway valve. The meter 2 drives a disc carrying a ring of reflectors, or a disc surmounted by a mirror and fitted with a ring carrying a series of distributed apertures. The meter 3 drives a similar device. A light ray 11, passes through an optical system 10 and the reflections pass through a lens 12 on to a mirror 13 and through a lens 14 on to a disc having a stroboscopic action. When the stroboscopic disc appears stationary, there is a fixed ratio between the meter speeds, and adjustment of the meter 3 is made to secure this effect. An arrow 19 gives the degree of opening of the valve 18.
Patent GB-233207-A (GB)
Title: Improvements in apparatus for screwing up nuts or screws
IPC: B25B23/14
Filed: 1924-08-06
Abstract: 233,207. Abdulla & Co., Ltd., and Legg, O. Aug. 6, 1924. Bolts, nuts and screws, screwing up.-An apparatus for screwing up nuts, bolts, studs or screws comprises a conical clutch-member A secured to a shaft B driven through bevel gearing J from a shaft J<1> rotated by a flexible shaft from an electric motor, and an external clutch-member C adapted at C' to receive a socket &c. for a box spanner or other tool. The clutch is normally engaged by a spring or springs D adjustable through a screwed sleeve F and may be disengaged by a hand lever O for applying fresh work. A ball or roller ratchet L operated by a lever L<1> provides for giving the work an additional turn after the clutch A slips. The outer clutchmember is closed by a screw I to form a reservoir for lubricant, grooves B<1>, A<1> being provided in the shaft and clutch to allow circulation. In a modification the clutch A may be engaged by hand and disengaged by a spring, the ratchet L being then dispensed with.
Patent GB-572110-A (GB)
Title: Thermo-stable catalysts
IPC: B01J21/16
Filed: 1943-11-11
Abstract: 572,110. Alumina catalysts. SHELL DEVELOPMENT CO. Nov. 11, 1943, No. 18801. Convention date, March 14, 1942. [Classes 1 (i) and 1 (iii)] A thermostable catalyst is prepared by adding to gamma alumina or an alumina which passes through the gamma form on heating about 4-10 mol per cent. of an alkali metal compound, and heating to 800-1,400‹C. for at least three hours to convert the alumina into beta alumina. The products have the general formula R,O. 11Al2O3. They may be impregnated with the usual promoters such as chromates, molybdates, tungstates, vanadates, phosphates, borates &c. and are particularly useful for the reforming desulphurization, cracking, dehydrogenation &c. of hydrocarbons.
Patent GB-712280-A (GB)
Title: Improvements relating to bobbin winding apparatus
IPC: B65H54/553
Filed: 1952-07-24
Abstract: 712,280. Winding yarn. BARMER MASCHINENFABRIK AKT.-GES. July 24. 1952 [July 26, 1951], No. 18813/52. Class 120(2) A winding apparatus comprises a supporting frame 9 for the winding-on bobbin 16, the frame 9 being removable from the apparatus, with the wound bobbin, to permit the bobbin to be doffed from the frame when the frame is outside the apparatus. Frame-guiding members 1, 2 attached to the machine are furnished with curved grooves 3, 4, in which are positioned rollers 17, 18, the grooves 3, 4 being deeper at 37, 38 to facilitate the introduction of the frame 9, which is supported by rollers 5, 6 and pins 7, 8 also fixed to the machine frame. The frame 9 carries bushes 10, 11 which mount centering plates 13, 14 for carrying the winding-on tube 15, and threadcatching grooves 24-27, and also the rollers 17, 18. A longitudinally movable shaft 12, also fitted in the bushing 11, carries the plate 14. The frame 9 provided with lifting handles 28, 29, is raised with the growth of the package 16 so that its centre of gravity is moved to maintain substantially constant bearing pressure upon the package-driving roller 36 (not shown). A spring 22 urges collars 21, 23 against the grooves 3, 4 to prevent bouncing of the package. The shaft 12 is locked during winding by a pin 35 operated by a spring-pressured lever 32 and released by tinger pressure for doffing.
Patent GB-1036184-A (GB)
Title: Improvements in and relating to traps or bait holders for garden vermin, such as slugs and snails
IPC: A01M25/00
Filed: 1964-05-06
Abstract: 1,036,184. Insect traps. E. PARKER. June 29, 1965 [May 6, 1964], No. 18845/64. Heading A1M. A trap for catching garden pests comprises a bait container 1 having an open top and/or opening in its side wall and a cover 4 detachably supported on a central post or column upstanding from the base of the container. A spike 6 may be provided for anchoring the trap in the ground and the side walls of the container may be curved. The trap may support a garden ornament and the cover may be domeshaped or of inverted dish form.
Patent GB-1456474-A (GB)
Title: Process for the preparation of chewing gum
IPC: A23G4/06
Filed: 1975-05-06
Abstract: 1456474 Chewing gum MEIKA SEIKA KAISHA Ltd 6 May 1975 [17 May 1974] 18858/75 Heading A2B Soft, low density chewing gum is made by forming a chewing gum in conventional manner, cooling to below -15C, forming into minute fragments, and allowing the temperature to rise so that the fragments coalesce. The coalescence may take place in a mould or framed plate or on a conveyor. Cooling may be performed by immersion in or spraying with a liquefied gas, or by means of a refrigerator. The fragments may be formed by crushing or grinding e.g. by means of a hammer mill, crusher, or turbomill. Herbs, coffee, cocoa, nuts, candied fruit or candy may be included in the chewing gum. The fragments may be coated on to a centre e.g. jelly, nuts, candied fruit or candy before coalescence, and may additionally be coated with a further layer e.g. powdered sugar, gum, chocolate.
Patent GB-590188-A (GB)
Title: Improvements in or relating to cinematograph film printing machines
IPC: G03B27/08
Filed: 1944-10-03
Abstract: 590,188. Kinematograph film printing- machines. GLUCK, V., and WILLIAMS, R. C., [trading as ELMEC ENGINEERING CO.]. Oct. 3, 1944, No. 1886]. [Classes 97 (i), 98 (i) and 98 (ii)] In a machine having film-feed mechanism consisting of steady pins and claw feed pins which are intermittently engaged with the film perforations, the feed pins being reciprocated in the direction of the film, means are provided for varying the operating position of said pins to engage with any of the different sets of film perforations of successive frames. The feed pins may be mounted on a carriage reciprocated, for feeding the film, by a crank-pin and disc, while the feed pins and steady pins may be moved into and out of engagement with the film in timed relation with the film feed bv cam arrangements.' The travel of the feed pins is variable to allow " skip " printing. As shown. in Fig. 1, the shaft 3 of a motor rotates a crank disc 4, having a crank-pin 5, engageable in order to vary the feed step of the film in any of the screwed holes 6 in the disc, and journalled in a block 7 slidable transversely in a slotted cross-piece 8, itself slidable in guides 10, so that the cross-piece 8 reciprocates towards and away from the exposure aperture 2 in the top wall 1 of the printing box as the disc 4 rotates. Between wings 9 on the cross-piece 8 are mounted channelled and slotted guides 11 in which are adjustably damped, by screws 25, the arms 13 of a forked member 14, carrying sleeves 15 in which the feed pins 16 slide. After slackening the screws 25, member 14 may be adjusted in the guides 11 by screw-adjusting means 24 so that the pins 16 may engage any set of film perforations. On the member 14 is a cam plate 17, Fig. 2, through a stepped slot in which passes a rod 18 which passes also through a pivot pillar 19 on member 14 and terminates in a strap 20 around the crank-pin 5. This rod serves to reciprocate the pins 16 by its transverse movement as the disc 4 rotates. On the cross-piece 8 are lugs 40 which engage towards the ends of its travel, screws 39 on brackets 38 adjustably mounted on rods 36 slidable in guides 37, so that the rods are slightly displaced one way or the other as the lugs strike the screws. Secured to the rods are brackets 35 carrying pins 33, each of which projects through a straight slot in a plate 31, Fig. 3, into a stepped slot in a member 30 which is slidable in guides on the plate 31 and is secured by a pin to one of the steady pins 26 which are slidably mounted in guides 28. The excursions of the rods 36 thereby produce reciprocations of the steady pins to and from the film in timed relation to the film feed. In order to displace these pins so that they will engage differently located pairs of film perforations, their supporting means are carried by a cross-slide 41 having a pin-and-slot clamping connection with its guides 42, and adjustable to and from the gate 2 by means of a screw 43 after release of the clamps. Specification 590,189 is referred to.
Patent GB-1417651-A (GB)
Title: Device for removing dust from a gramophone record
IPC: G11B3/58
Filed: 1973-04-19
Abstract: 1417651 Cleaning gramophone records RESEARCH INSTRUMENTS Ltd 22 March 1974 [19 April 1973] 18897/73 Heading G5R A vacuum device for removing dust from gramophone records during play comprises a support member 10 which is secured to record deck 13 by a magnet 12 in its base, a brush 62 at the free end of a counterbalanced arm 42 which is mounted for horizontal and vertical pivoting on the support member and an air duct extending from the brush via tubular member 52, rubber hose 54, hollow pivot shaft 20 and rubber hose 28 to a vacuum source, Fig. 3 (not shown) disposed in a sound proof box. The arm height is adjustable and in use the bristles of the brush engage the record groove and track across the record.
Patent GB-167946-A (GB)
Title: Improvements in carburettors
IPC: F02M19/02
Filed: 1920-07-06
Abstract: 167,946. Elverson, A. J. H., and Elverson, J. H. July 6, 1920. Spray carburettors. -Fuel is supplied from an annular float chamber 1 to an annular channel 11 in the wall of the choke tube 2. an annular chamber 6 heated by exhaust gases or hot water being interposed between the float chamber and the channel. The port of the channel 11 is covered by a ring 12 of tightly wrapped gauze or like atomizing-matorial, and the lip 13 of the channel is a little higher than the petrol level. The fuel passes from the float chamber to the channel through inclined passages 9 which traverse the heating-chamber 6 and are provided with needle valves 10. A slow-running nezzle 14 supplied with fuel by a siphon tube 16 and controlled by a needle valve 17 is provided adjacent the throttle 15. The float 3 is hinged to an arm 4 which can be adjusted vertically from outside the carburettor to vary the fuel level.
Patent GB-1178421-A (GB)
Title: Stabilizer Structure for a Boat.
Inventor: ILON BENGT ERLAND
IPC: B63B39/06
Filed: 1967-04-25
Abstract: 1,178,421. Trimming and stabilizing marine craft. B. E. ILON. 25 April, 1967 [25 April, 1966], No. 18948/67. Heading B7M. Apparatus, or structure, for stabilizing a boat comprises a flat plate 1 that is coupled to a bracket 10 ... 16 on the transom 9 by pairs of pivotally connected links 5, 6, a tension spring 17 being attached to said bracket and a bar 18 connecting the links 6 to each other. The plate is biased towards a position wherein it abuts the transom and has a horizontal attitude relative to the hull 3; and when the stern of the boat is depressed by, e.g. a load applied to the hull abaft its centre, the trim is corrected while the craft is under way owing to the angle of attack of the plate 1 becoming positive (instead of zero) and the plate being consequently displaced to a position shown in phantom lines (Fig. 1) wherein its angle of attack is greater so that the lift effected by the plate is increased accordingly. Identical apparatus is provided on either side of the plane-of-symmetry 19 of the hull so that rolling is minimized; and, to this end, the two plates 1 may be inclined towards said plane so as to increase the stabilizing torque. In a second embodiment, Fig. 3 (not shown), the plate 1 is supported by a pair of brackets (22) that are attached to the transom 9 and provided with slots (21) containing pins (20A), which are fixed to the plate, the said slots being such that the plate can be displaced into a position substantially similar to that shown in phantom lines in Fig. 1 against the action of a spring (20B). In a third embodiment, Fig. 4 (not shown), the plate (26) is supported by a pair of downwardly-extending arms (24) that are pivotally attached at their lowermost ends to a bracket (23) fixed to the bottom of the hull, the plate being biased as before by a spring (27). In a fourth embodiment, Figs. 5 and 6 (not shown), the plate (33) is supported in a manner somewhat similar to that shown in Figs. 1 and 2, the spring 17 being dispensed with.