baber/WOPTO huggingface dataset:
Patent GB-796036-A (GB)
Title: Method of oxidizing alkyl substituted pyridines
IPC: C07D213/127
Filed: 1956-06-21
Abstract: An alkyl pyridine is oxidized to produce a pyridine carboxylic acid or pyridine or a mixture thereof by a process comprising feeding into a closed vessel containing nitric acid of 5 to 18 per cent concentration, under pressure and at a temperature approximating to the reaction temperature, a mixture of an alkyl-substituted pyridine dissolved in nitric acid of greater concentration than that of the acid in the closed vessel, regulating the rate of feed of the mixture so that the concentration of the nitric acid in the vessel remains substantially constant and maintaining the reaction mixture at a temperature in the range 180-195 DEG  C.  If desired, a catalyst, e.g. ammonium vanadate, copper nitrate or cobalt nitrate, may be used.  In the examples: (a) a mixture of nitric acid, picoline and water is passed into a vessel containing 15 per cent nitric acid at 185-190 DEG  C.; the temperature of the mixture is raised to 190-195 DEG  C. for two hours, the mixture is cooled, caustic soda solution is added and isonicotinic acid is precipitated; (b) the process of (a) is repeated using as starting materials (1) 4-ethylpyridine, (ii) a mixture of beta and gamma picolines, and (iii) 2,4-lutidine, giving in each case isonicotinic acid; (c) the process of (a) is repeated using 3-ethyl pyridine as starting material, the product being nicotinic acid; and (d) the process of (a) is repeated using alpha picoline as starting material to give pyridine.
Patent GB-1176895-A (GB)
Title: Improvements in or relating to Air Duct Assemblies
IPC: F24F13/14
Filed: 1968-04-24
Abstract: 1,176,895. Roof ventilators. BIG DUTCHMAN (NEDERLAND) N.V. 24 April, 1968 [26 April, 1967], No. 19254/68. Heading F4V. A ventilator for an animal house comprises inner and outer tubes 2, 3 for discharging and supplying air respectively, four transverse ducts 5, an extension 14 housing a fan and extending to the lower part of the house and four valves 9 movable to permit fresh air to be drawn in to replace exhausted air or movable to cause recirculation of the air in the house. The portion of the valves extending into the inner tube 2 may be triangular so that the four valves together substantially close the tubes. A cable 12 connects the valves to a step-by-step motor 10 coupled to a winch 11. Coil springs or counterweights ensure that the cables remain taut. The motor is energized by current pulses provided by a temperature regulator. The valves could be manually operated. Extensions 16 may be fitted to the ducts 5 and may carry adjustable baffles 18. Baffles 18 could be positioned in ducts 5.
Patent GB-675328-A (GB)
Title: Improvements in shaft seals, particularly for centrifugal pumps
IPC: F04D29/14
Filed: 1950-08-02
Abstract: 675,328. Stuffing-box substitutes. WILFLEY & SONS, Inc., A. R. Aug. 2, 1950 [Aug. 11, 1949], No. 19278/50. Class 122(v) The shaft bearing B<SP>1</SP> of a centrifugal pump is protected from contact with the pumped liquid by a centrifugal seal comprising a cylinder C carried by the rotating shaft and having internal helical ribs 54, closely embracing a fixed cylinder D provided with two annular shoulders 22, 23. When stationary the bearing is protected by the packing F pressed by the spring 33 against the ribs 32. Centrifugal weights 37 lift the packing off the rib when the shaft revolves. Specification 432,838 is referred to.
Patent GB-183705-A (GB)
Title: Improvements in implements for lifting hot hollow-ware
IPC: A47J45/10
Filed: 1921-07-18
Abstract: 183,705. Strathern, A. G., and Neilson, R. M. July 18, 1921. Holding and picking-up tools; tongs.-A device for lifting hollow-ware is provided with two pivoted jaws, handles being formed integrally with or arranged to act on the jaws so that when the handles are pressed together the jaws grip the article. One jaw is provided with two engaging points arranged in a line perpendicular to the plane of motion of the jaws, the other jaw having one engaging point and these three points being in a plane perpendicular to the plane of motion of the jaws. One form of the device, Figs. 1 and 3, consists of members a, b, pivoted at x, the member a being bent over at f and the member b being twisted through 90‹. The end a is bent over and formed with two points o, r, and the end of the member c with a point h, the points lying in a plane 2-2. In a modified construction shown in Figs. 4 and 5, the member c resembles the member a except that it has no turned-down portion but is provided with a staple u and a lug g. The member b is replaced by a jaw e and a lever d, the jaw e being pivoted at u and the lever d at g. The engaging point h in this case is rounded as shown in Fig. 5. In a further modified construction, the staple and lug are interchanged, the jaw e is formed of a vertical piece of plate, and the lever d is channel-shaped in section.
Patent GB-364073-A (GB)
Title: Process for producing glaze on rough surfaces
IPC: C04B41/63
Filed: 1930-06-25
Abstract: To glaze asbestos-cement and like rough-surfaced sheets, a layer of artificial resin is pressed between the cement sheet and a polished plate of glass, metal or the like, the glass plate being removed after the resin has hardened.  In one method the glass plate is coated with the resin and then pressed against the sheet. Alternatively the resin may be applied to the cement sheet and the glass plate pressed thereon, or both plate and sheet may be coated with resin.  Again, the glass plate may be coated with the resin and the latter partly hardened, the layer being secured to the sheet by a cement of artificial resin.  The plate may be provided with successive layers of resin in various colours to produce a pattern, each layer being hardened sufficiently to prevent deformation by the rest.  The sheet and plate may be pressed together in a vacuum.
Patent GB-440566-A (GB)
Title: Improvements in electric discharge tubes
IPC: H01J17/04
Filed: 1934-06-30
Abstract: 440,566. Discharge apparatus. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Naamlooze Vennootschap Machinerieen-en Apparaten Fabrieken Meaf; 30, Croeselaan, Utrecht, Holland) June 30, 1934, No. 19389. [Class 39 (i)] In a tube having an apertured screen separating an anodic space from the remainder of the tube and in which the cross-section of the apertures is small compared with that of the discharge path so that at a predetermined current density within the normal working range of the tube the potential drop across the tube increases with increasing current, the apertures are extended in tubular form near to the anode surface. In the form shown, a metal member B carries a front portion which may be porous and provided with several tortuous passages or may be a member having tubular projections F. To facilitate starting the member B may be connected to the anode A through a resistance, or through a semi-conducting support L, or the member B may be a semi-conductor and may be connected to the anode A or its lead directly. The diameters of the aperture and of its tubular extension should be of the order of the mean free path of the filling and the distance of the screen from the anode should be a few times the mean free path. The tube may be used as a constant current device, or as a lamp, in which case a ballast resistance is unnecessary. A point-like light source is obtained due to the constriction of the discharge by the screen. The cathode may be thermionic or may be a mercury pool with, if necessary, an exciting anode, in which case the tube temperature is kept constant by thermostatic control. Specification 404,455 is referred to.
Patent GB-947062-A (GB)
Title: Improvements in or relating to electrical apparatus comprising a voltage commutating member
IPC: H01H9/00
Filed: 1960-06-01
Abstract: 947,062. Two-part couplings; mechanical switches, without quick-action. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 1, 1960 [June 4, 1959], No. 19406/60. Headings H2B and H2E. In conjunction with a counter-plug 33, electrical apparatus comprises a housing 1, a rotatable voltage commutator 5 located within an aperture 39 in the housing, a fixed voltage commutator located internally of and for co-operation with the commutator 5 which has a plurality of contacts and plug pins 11 corresponding to and connected to certain of the contacts, the plug 33 being shaped to permit its insertion into the aperture 39, of co-operating with the pins 11, of being rotatable relative to the housing when partially inserted, and not rotatable when fully inserted through the co-operation of a non-circular part 37 of the plug with the walls of the aperture. The commutator 5 comprises a rotatable disc 7 in a frame 9, the fixed commutator being locked in the frame by a strap 23. On partial insertion the pins 11 engage bores 43, the plug 33 and thereby the pins 11 are rotated to the selected voltage and then locked in that position when the plug is fully inserted.
Patent GB-596563-A (GB)
Title: Composition sole and method of making same
IPC: A43B13/12
Filed: 1945-07-30
Abstract: 596,563. Soles for shoes. RYAN, J. E. L. July 30, 1945, No. 19533. [Class 17 (ii)] [Also in Group VIII] Shoe soles are prepared by winding a stranded rope laterally about a sole-shaped core member of flexible plastic material such as rubber and compressing the wound core in a vulcanizing mould so that the rope strands become at least partially embedded in the core. A stranded rope 10, Fig. 4, which shows a part longitudinal sectional view through the finished sole at the toe end, waterproofed either prior to winding or on the finished sole, is wound laterally round a flat sheet 11 of uncured rubber cut to the shape of the sole but somewhat smaller. A narrow removable stiffener sheet may be placed over the core to assist winding and is removed before the core is placed in the mould. In a modification, less rubber is used and the core is composed of thin layers of rubber or plastic material with an intermediate stiffener layer of single ply cardboard, fibre board or the like. Thin reinforcing layers of uncured rubber are then placed on the underside of the sole at the heel end, the toe end and on the edge portion, prior to vulcanization in the mould.
Patent GB-439305-A (GB)
Title: An improvements in or relating to machines for washing or scouring textile fabrics
IPC: D06F13/00
Filed: 1934-07-03
Abstract: <PICT:0439305/IV/1> In a machine for washing or scouring textile fabrics, whether in open-width or made endless, and traversed through a trough or vessel in rope form, of the kind wherein the material forms itself into loose "cuttles" or folds on the bottom of the trough, means are provided to subject the folds during the passage of the fabric through the liquid to a succession of gentle squeezing actions to cause a change of liquid in or in contact with the fabric without expelling all the liquid or crushing the fibres.  As shown, the folds of material pass along the curved surface of a false bottom a<1> in the trough a and are there subjected to pressure by a member m which is actuated through links n by connecting rods o and cranks p.  The member m may be perforated as shown, or may comprise a skeleton framework. It may be in two or more sections which work together or in succession, and, when in one piece, instead of being mounted as shown, it may be pivoted at its rear end and be raised or lowered at the front end.  The bottom a<1> is preferably perforated and a circulating pump is provided to connect the space beneath it with the space in the trough.  This circulating pump may also operate a series of jets acting on the fabric as it enters and leaves the trough.  A number of troughs may be arranged in series, the liquid expressed by squeeze rollers g as it leaves the first trough being prevented from returning to the trough, but in succeeding stages it is permitted to do so.  Specification 6970/13, [Class 15 (i)], is referred to.
Patent GB-1088916-A (GB)
Title: Shock absorber for reactor safety rods
IPC: G21C7/20
Filed: 1965-05-10
Abstract: 1,088,916. Controlling reactors. GESELLSCHAFT FUER KERNFORSCHUNG m.b.H. May 10, 1965 [May 13, 1964], No. 19566/65. Heading G6C. [Also in Division F2] A nuclear reactor safety rod is arrested, at the end of its vertical fall into the core, by a gasfilled shock-absorber. To prevent a reversed upward motion of the rod by the expansion of the compressed gas, the latter is automatically released, after the commencement of the upward movement. The gas release valve is carried on the absorber piston and is opened by a sliding sleeve mounted on the piston and frictionally engaged with the cylinder of the absorber. Upon commencement of the piston upward movement the sleeve adheres to the cylinder surface and does not move with the piston. Continued movement of the piston brings the valve outlet beyond the sleeve and the compressed gas is released. In an alternative form, the release valves are opened by relative displacement between the sleeve and piston due to the inertia of the sleeve.
Patent GB-626587-A (GB)
Title: Improvements in and relating to yarn and like coning machines
IPC: B65H54/10
Filed: 1947-07-22
Abstract: 626,587. Winding yams &c. COURTAULDS, Ltd., and BROWN, J. I. July 22, 1947, No. 19582. [Classes 120 (ii) and 120 (iii)] A yarn &c. coning machine comprises a positively driven spindle for carrying the cone being wound together with a thread guide riding against the surface of the cone, the arrangement being such that movement of the thread guide away from the spindle, due to the growth of the cone, results in a sideways displacement of the'spindle and an alteration in the rotational speed thereof so that yarn is wound on to the cone at a substantially constant peripheral speed. The tube 1 is held on the mandrel 5 by spring-urged jaws 8 which, to release the tube, may be drawn inwardly by a forked plunger 6, 7 operated against a spring 12. The mandrel 5 is rotated by the spindle 2 driven through friction gears 14, 15, the gear 14 carrying a resilient ring 16 and the plate 15 driving the spindle through a yoke 19, forming, with a ring 20, a magnetic eddy-current coupling so that speed changes are effected without snatching.- The thread guide consists of a grooved conical roller 3 freely mounted on a spindle attached to a counterweighted arm 41 pivoting about a shaft 42. As the cone grows in diameter it moves the guide roller 3 about the shaft 42 until a micro-switch is contacted to energise a solenoid 47 and retract a pawl 48 from a ratchet 51 to allow the spindle-carrying carriage 23 to slide along guide rails 24, 24<SP>1</SP> under pressure from the thread guide roller. As the microswitch is released by the swing back of the arm 42, the pawl 48 drops under the action of the spring 50 to engage the next tooth in the ratchet 51. The movement of the spindle 2 and carriage 23 effects the drifting of the driven friction wheel 15 in relation to the driving wheel 14 so to reduce the spindle speed to maintain a constant winding speed. At the end of the wind, the carriage 23 contacts a switch to energise a solenoid 31 to withdraw the friction wheel 15 from engagement with the driving wheel 14. To facilitate the tending of the machine, empty and full cones may be supplied to and removed from the machine by a conveyer belt and the operator may be provided with a swivel seat on a wheeled carriage running on rails between two machines and operated by foot pedals. Specification 600,713 is referred to.
Patent GB-673761-A (GB)
Title: Improvements in or relating to electron discharge devices
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H01J23/10
Filed: 1949-07-26
Abstract: 673,761. Velocity-modulated tubes. STANDARD TELEPHONES & CABLES, Ltd. July 26, 1949, No. 19590/49. Class 39 (i). In an electron discharge device of the kind utilizing a magnetically-guided stream of electrons of substantially constant cross-section, an electron emissive cathode is contained within and subject to the magnetic field of one of the polepieces of the magnetic arrangement adapted. to guide the said stream and the opposing polepiece contains or comprises an electrode whose electric potential influences the said stream. The reflex velocity-modulated oscillator tube shown comprises an indirectly-heated cathode 1 adapted to emit a ribbon-shaped electron beam and supported by a mica washer 2 in a cavity formed in a polepiece 3 of ferromagnetic material supported by means of mica washers 4 and 5 from the glass envelope portion 6, the base of which carries contact pins 7 for connection to the cathode. The remainder of the envelope is formed by a glass collar 9 and an end portion 8, which together with the portion 6 are sealed to two apertured metal discs 10 and 11 to which are clamped metal rings 13, 14 and 15 forming therewith a cavity resonator 12 which may be tuned by means of screw studs 16 projecting into the cavity through the ring 15. A second polepiece 18, connected to a terminal pin 21, is supported in the envelope portion 18 between mica washers 19 and 20 and has an extension 22 which projects into a funnel-shaped portion of disc 11 and is hollowed out to form an electronreflecting electrode 23. The magnetic circuit between polepieces 3 and 18 is completed by external polepiece members 24 and 25, which slide over the ends of the discharge tube, and a permanent bar magnet 26.
Patent GB-964550-A (GB)
Title: Polyoxymethylene compositions
IPC: C08K5/13
Filed: 1962-05-22
Abstract: A composition comprises a high molecular weight polyoxymethylene, a polyurethane and a phenol derivative having at least one alkyl or phenol group in the orthoposition to the hydroxyl group. Preferred preparations have from 0.1 to 2.0% of the phenol derivative and 0.02 to 10% of the polyurethane, the ratio of phenol to urethane lying between 1:1 and 1:10. Specified phenols are 2-6-di-tert-butyl-alpha-methoxy-p-cresol, 4-41-methylene-bis-(2-6-di-tert-butyl phenol), 4-41-thio-bis-(6-tert-butyl-3-methyl phenol), 2-21-methylene-bis(4-methyl-6-tert-butyl phenol) and 2-6-di-tert-butyl-alpha - dimethylamino - p - cresol. Specified polyurethanes are polyhexamethylene-tetramethylene urethane, polydicarmethylene-octamethylene urethane, polytetramethylene-hexamethylene urethane and the polyadditive reaction products of 2-5-bis-(beta-isocyanate ethyl) furan and tetramethylene glycol and of tetramethylene diisocyanate and hexantriol. The polyoxymethylene may contain glycol, dicarboxylate or diether end groups. The polymethylene and polyurethane may be used as catalysts in the vapour polymerization of formaldehyde and retained in the polymer or they can be added to the polymer.
Patent GB-1424550-A (GB)
Title: Power-fail detection system
IPC: G01R31/50
Filed: 1973-04-25
Abstract: 1424550 Power failure protection ADDRESSOGRAPH MULTIGRAPH CORP 25 April 1973 19647/73 Heading G4A [Also in Division H2]  A system for shutting down an operating system such as a computer and providing signals which may be used as memory store instructions and restarting instructions dependent on the primary voltage has means T1 for monitoring the voltage level, means 18 for detecting when said level falls below a reference voltage, means 22 for discriminating a power fail condition from a momentary voltage drop and operating a latch circuit to provide a power fail signal and operate a circuit (Fig. 3, not shown) providing a delayed control signal and circuitry providing a concurrent reset signal with an arrangement to remove the fail signal on power recovery and provide delayed removal of the control signal resulting in further delayed removal of the reset signal, permitting the provision of a restart signal. On shut down the computer executes a programmed sequence of operations.
Patent GB-322483-A (GB)
Title: Improvements in and relating to looms for weaving oriental rugs
IPC: D03D39/02
Filed: 1928-07-06
Abstract: 322,483. Marks, E. C. R., (Whittall Associates, M. J.). July 6, 1928. Pile-fabric looms.-Relates to looms, such as described in Specification 15901/06 for weaving Oriental rugs &c. Mechanism for actuating the yarn dividers is shown associated with mechanism for actuating the yarn grippers or pliers. The yarn grippers or pliers each comprise a pair of sliding members 10, 11, shown in plan view, connected to studs 12, 13 on a rock plate 14 having an extension 15. Each member 10 has a diamond shaped opening and each member 11 a forked end for gripping the yarn against the member 10. The extensions 15 are actuated in one direction by springs 22 and in the other by studs 21 on a sliding bar 20 furnished with a head 42 connected by a bar 41 to a bell crank 39 pivoted on a stud 40 on a carriage 70. The bell crank is adjustably connected by a long link to a cam-controlled bell crank whereby the bar 20 is caused to slide. The carriage 70 has studs 71 to receive camcontrolled actuating lever 72 whereby the carriage may be actuated to move the yarn out of the yarn tubes. The long link allows of this movement without causing substantial angular movement of the bell crank 39. The dividers 50 whereby pairs of warp threads are raised and manipulated during the insertion of the pile yarn and formation of a knot are all mounted in transverse bearings in a divider shaft 51. The dividers are turned on their axes by means of a rack 53 mounted on the shaft 51 and engaging pinions 52 on the dividers. The rack is actuated by a head 54 and a stud 56 extending through a slotted support and through a link 57 adjustably connected by a swivel connection to a pivot stud on the lower end of a cam-controlled lever 60, whereby the locus of the longitudinal movement of the rack may be varied to obtain the desired oscillatory movement of the yarn dividers. An arm 65 clamped to the shaft 51 is provided with a stud for a collar 67 connected to a link vertically reciprocated by cam mechanism, whereby the shaft 51 is oscillated to raise and lower the dividers.
Patent GB-702989-A (GB)
Title: Improvements in or relating to pipe couplings
IPC: F16L17/04
Filed: 1950-08-08
Abstract: 702,989. Pipe couplings. MOUCHLY, J. Aug. 8, 1951 [Aug: 8, 1950], No. 19727/50. Class 99 (1). [Also in Group XXV] A flexible rubber &c. coupling sleeve has an end 10a secured to a pipe 11 by a clamping band 13 and its other end 10c flared to receive a pipe 12 and secured thereto by a quick-release bandclip 16 (see Group XXV). A central internal recess 10d is so formed that a flexible sealing lip 10e engages the pipe 12. A separate cup-leather 19 may be provided in the recess. A union member 14 for a branch connection may be provided on the band 13, registering holes 20 being formed in the band, sleeve, and pipe.