baber/WOPTO huggingface dataset:
Patent DK-33983-A (DK)
Inventor: WIDERBY LENNART
IPC: F24F13/08
Filed: 1983-01-28
Abstract: An exhaust air valve for placement in a ventilation conduit through which air is exhausted from a space to be ventilated. The valve has a casing with a concave seat surface facing upstream of the flow through the conduit and having a central valve orifice. A convex valve element cooperates with the seat surface and when the valve is closed engages the seat surface along a line of contact surrounding the seat. The curvature of the respective surfaces is the same, at least along the line of contact to ensure a tight closure of the orifice by the valve body. When opening, the valve body slides along the curved surface and the upstream surface of the valve body exposed to the flow is also convex to guide the flow toward the center of the orifice. Several embodiments are illustrated including valves with cords for remotely controlling the valve and heat-sensitive tripping mechanisms which automatically close the valve in the event of a rise in temperature above a preset level. The closing movement may be pivotal about a pivotal connection maintaining the valve element in sliding contact with the valve seat or may be a sliding displacement longitudinally of a slot in one of the elements.
Patent DK-36788-A (DK)
Inventor: CHEN YUHPYNG LIAND
IPC: C07D519/00
Filed: 1988-01-26
Abstract: Antibacterial penicillins of the formula <CHEM> or a pharmaceutically acceptable salt thereof wherein R<1> is a heterocyclic group and R is hydrogen, the residue of certain carboxy protecting groups or the residue of an ester group readily hydrolyzable in vivo having activity against resistant organisms.
Patent GB-1074810-A (GB)
Title: Improvements in or relating to photometric measuring apparatus
IPC: G02B21/00
Filed: 1966-01-03
Abstract: 1,074,810. Photo-electric measurement. ERNST LEITZ G.m.b.H. Jan. 3, 1966 [Jan. 7, 1965], No. 106/66. Heading G1A. Analysis of an object using a photo-electric microscope involves taking a series of measurements which are stored and then compared with a second series of measurements. In the embodiment described, light from a source (12) passes through a variable monochromator, through the object plane to a photo-cell (3) which is mounted on the microscope tube. Signals corresponding to the intensity incident on the cell pass to an amplifier (5). A beam splitter (11) in the light path and further photo-cell (10) may be provided to compensate for variations in source intensity, by comparing the outputs of the photo-cells in the amplifier (5). In the analysis of the object, a first series of reference values is obtained by varying the wavelength of light incident on a part of the microscope slide not containing the sample, by adjustment of the monochromator. The output of the amplifier (5) is recorded on a tape (7) running in synchronism with the monochromator adjustment. The amplifier output is passed through a converter (6) which may, for example, generate an A. C. signal the frequency of which corresponds to the amplifier output value. The monochromator adjustment is then repeated with part of the object in the light path, the tape now being read out in synchronism so that the reference values previously recorded may be compared, after passing through the converter, with the amplifier output in a comparison device (8), the output of which is indicated or recorded. Instead of a wavelength variation, an extended area of the object may be examined at a constant wavelength. If a plurality of tape tracks are provided, a recording of the measurements on the object may be made on the tape, alongside the reference values. An information track for speech &c. may also be provided. The signals may be converted to digital form for storage.
Patent GB-279680-A (GB)
Title: Method of obtaining an electric arc from an alternating current supply for therapeutic and other purposes and of improving the steady sustainment of a direct current arc
IPC: A61N5/06
Filed: 1927-01-04
Abstract: 279,680. Blake, G. G. Jan. 4, 1927. Supplying consuming devices. -A method of enabling an arc for therapeutic and other purposes requiring ultra - violet radiations, to be struck and maintained between metallic (e.g. tungsten) or metal-impregnated or filled electrodes d, from alternating current rectifies at b, consists in inserting in one or both of the rectified current leads an iron-cored choke c of fixed or adjustable value. One or more fixed or variable condensers e may be paralleled across the rectified current leads, either on the arc or supply side of the chokes.
Patent GB-1174112-A (GB)
Title: Electrostatic Spray Painting Method
IPC: B05D1/04
Filed: 1967-01-03
Abstract: 1,174,112. Electrostatic precipitation; spray producers. FORD MOTOR CO. Ltd. 3 Jan., 1967 [4 Jan., 1966], No. 203/67. Headings B2F and B2J. [Also in Division H1] In a method of electrostatic spray painting an electrically-conductive workpiece 11, Fig. 1, is located in an electric field and a liquid coating material is atomised and sprayed by a device 37 into the field towards the workpiece. Election beams are projected by units 27, 29, into the spray. The average electrical potential of the electrons in the beam is such as to induce an electrical charge in a substantial number of the particles forming the spray which are guided by the field into contact with the workpiece. As described, the workpiece 11 is conveyed by a known hanger and track arrangement 13, 15, all parts being earthed. The electron acceleration units 27, 29 are mounted on adjustable arms 23, 25 and the spray device 37 and units 27, 29 may be vertically reciprocated according to the shape of the workpiece. An acceleration unit comprises an anode 59 surrounded by oil, a window 63 and a cathode 71 with a filament 77, the arrangement being provided with conventional anode and filament supplies. In a second embodiment the acceleration unit 201, Fig. 5 has a circular exterior housing with an opening for the spray 137 and aluminium copper alloy windows 205, Fig. 6, around it. Tungston filaments 247 are aligned with the windows 205 and supplied by bus bars 243, 249, Fig. 8. A supply for the filaments of 2-5 volts is applied between conductors 207, 209. In a further embodiment, the accelerators are to the side and rear of and directed away from the workpiece, so as to converge on the spray. A separate electrode may provide the negative terminal of the field, the coating particles being charged by electron bombardment from the accelerator. The workpiece may alternatively be positively charged. The electron beam may itself polymerize the coating material simultaneously with the electrostatic deposition.
Patent GB-680971-A (GB)
Title: Improvements in or relating to method for the preparation of 1-acetoxy-1, 1-dicyano ethane
Filed: 1951-01-05
Abstract: 1-Acetoxy-1.1-dicyano ethane is produced by passing ketene and hydrogen cyanide in the vapour phase over a catalyst comprising an unactivated carbon or an oxide of a metal having a valency greater than one and occurring in periods 2 to 4 of the periodic table, maintained at a temperature of from 200 DEG  to 550 DEG  C.  The reactants may be diluted with an inert gas such as nitrogen or helium.  The preferred oxides to be used as catalysts are the oxides of magnesium, calcium, zinc, strontium, cadmium, aluminium, titanium, vanadium, chromium, molybdenum and manganese. Preferably, the activated form of these oxides is used.  The various forms of unactivated charcoal, e.g. animal or vegetable charcoal, bone charcoal, hardwood or soft wood charcoals, coke, coal, graphite or "chicken charcoal," may be used as catalysts. Preferably about 1.2 to 2.0 moles. of ketene are used for each mole. of hydrogen cyanide.  In the examples, ketene is reacted with hydrogen cyanide in the presence of various catalysts. Specification 653,468 is referred to.
Patent GB-1270371-A (GB)
Title: Denture soak compositions
IPC: C11D1/00
Filed: 1970-01-05
Abstract: 1,270,371. Denture soak composition. COLGATE-PALMOLIVE CO. 5 Jan., 1970 [23 Jan., 1969], No. 452/70. Heading C5D. The invention comprises a stable, non- deliquescent, water-soluble, effervescent solid denture soak composition of slightly acid pH when dissolved in an aqueous medium, containing dextranase. The compositions may be in the form of a powder, granules or tablets which provide a pH of 5.0 to 5.5 in water. The compositions comprise (A) a solid water-soluble oxidizing agent, (B) a solid water-soluble carbonate or bicarbonate, and (C) a solid watersoluble organic acid. Components (A) are alkali metal perborates, persulphates, percarbonates or perphosphates, or mixtures thereof. Components (C) may be tartaric, citric, malic, maleic, fumaric, succinic or adipic acids, or mixtures thereof. Optional additions are 0. 1 to 5% of an anionic surfactant, sodium chloride, flavours and a carrier therefore e.g. magnesium carbonate, sweeteners, foam depressants, preservatives, buffers, diluents and binders.
Patent GB-859860-A (GB)
Title: Improvements relating to sealing rings for relatively rotating parts
Inventor: PRINGLE JAMES MAITLAND
IPC: F16J15/32
Filed: 1959-11-06
Abstract: 859,860. Stuffing-box substitutes. BURTON. WOOD ENGINEERING CO. Ltd. Nov. 11, 1959 [Jan. 6, 1959], No. 456/59. Class 122 (5). In a rotary shaft seal of rubber &c. having a sealing lip 2 to engage the shaft and a holding portion 7 adapted to engage a bore 8 in the shaft housing and reinforced by a metal or other ring 1, to facilitate insertion of the seal in the housing, the outer surface of the holding portion 7, at least near that end which enters the housing first, is formed with compressible upstanding portions which may be in the form of annular ribs 6, Fig. 1, or rounded projections 14, Fig. 4. The outer diameters of the ribs 6 or projections 14 are substantially equal to the outer diameter of the portion 7.
Patent GB-563482-A (GB)
Title: Improvements relating to the production of sulphonates from oils
IPC: C11C3/00
Filed: 1943-01-11
Abstract: Animal and vegetable glycerides are treated with aliphatic monohydric alcohols having less than six carbon atoms, the liberated glycerine is removed and the resulting esters sulphated. The alcoholysis may be effected in the presence of acid or alkali or according to the process of Specification 563,481.  Alcohols containing alkoxy or sulphonic groups are mentioned as well as the unsubstituted alcohols such as methyl and propyl alcohol.  In examples: (1) castor oil is treated with methanol in the presence of hydrochloric acid and also sodium hydroxide and the resulting mixture of esters, after removal of glycerine, sulphated; (2) coconut oil is treated with propyl alcohol in the presence of hydrochloric acid, and the propyl esters, after removal of glycerine, sulphonated with sulphuric acid and acetic anhydride; (3) cotton seed oil is refluxed with methylated spirit and 50 per cent sulphuric acid, the glycerine removed, and the remaining esters distilled in vacuo and sulphonated in trichlorethylene with chlorsulphonic acid.
Patent GB-449956-A (GB)
Title: Improvements in or relating to the wet purification of gases
IPC: B01D53/52
Filed: 1935-01-07
Abstract: In a process of the kind described and claimed in the parent Specification for removing sulphur oxides from gases, the rate of flow of the liquor through the scrubber and/or the addition of make-up water is controlled so that the degree of supersaturation of the liquor at the base of the scrubber does not exceed the following values: 4 milligram equivalents per litre of calcium sulphite and 3 milligram equivalents per litre of calcium sulphate in the case of scrubbing surfaces of wood, synthetic resin, stainless steel or hard copper, and 2.8 milligram equivalents per litre of calcium sulphite and 2 milligram equivalents per litre of calcium sulphate in the case of scrubbing materials such as mild steel, brass, or aluminium bronze.  Scaling is thereby prevented. The liquor may be replenished with lime immediately it leaves the scrubber.  The liquor may be treated to remove dissolved carbon dioxide prior to the desupersaturation treatment.  This may be effected by the application of heat and/or reduced pressure or by the passage of gases.  The delay tank may be used for this purpose or a separate stirred tank may be used.  Alternatively, the removal of carbon dioxide may be effected by introducing air into the scrubber at a point below the gas inlet, a shallow depth of packing being arranged between the air and gas inlets; or a separate stripping vessel may be used. Specification 424,414, [Group XII], is referred to.
Patent GB-943256-A (GB)
Title: Panel structure of high acoustic tran mission loss
IPC: G10K11/16
Filed: 1960-01-07
Abstract: 943,256. Laminates; forms of wood. BOLT, BERANEK & NEWMAN Inc. Jan. 7, 1960 [March 23, 1959], No. 581/60. Headings B5L and B5N. [Also in Division E1 A panel structure for providing a high acoustic transmission loss over a wide frequency band comprises a pair of metal or other surface members 3, 3<SP>1</SP> bounding an inner core 5 composed of material having a Young's modulus (measured in a direction parallel to the planes of the surface members) which is less than the Young's modulus of either of the surface members, the ratio of shear modulus (measured in a direction parallel to the planes of the surface members) to density of the inner core being sufficiently low to permit propagation therealong of acoustic energy with a wave velocity less than about seven-tenths of the velocity of the propagation of acoustic energy in the air surrounding the panel structure, the combined thickness of the surface members being not more than one half that of the inner core, the inner core being divided, as by slots 2 which are wider at their ends 2<SP>1</SP>, into discrete parts defining a plurality of spaced sections 4 of the surface members 3, 3<SP>1</SP> which are unsupported by the inner core. The core medium 5 is of laminar form, each lamina being built up from wood fibres in such a manner that the fibres lie parallel to the plane of the lamina, such lamina being laid upon each other and joined together to form a board which is cut into narrow strips which are secured together to form a new board in which the planes of the fibres are normal to the plane of the new board. This board forms the core medium 5 and the surface members 3, 3<SP>1</SP> are attached to its faces.
Patent GB-1444691-A (GB)
Title: Firing pin ignition devices
IPC: F42C7/12
Filed: 1974-01-07
Abstract: 1444691 Percussion igniters BUCK KG 7 Jan 1974 [5 Jan 1973] 00596/74 Heading F3A An underwater igniter comprises: a casing 10b containing a percussion cap 18 and a delay action tube 19; a striker consisting of three detachably interconnected parts 11, 12 and 13; and a washer 17 sealing against part 12 of the striker. Upon pulling up the striker with a cord 20 attached to a cap 21, a spring 14 is cocked until two balls 15 enter a groove 16. As a result, part 13 of the striker is released and is driven by the spring towards the percussion cap. Upon pulling part 11 of the striker beyond the edge of a casing part 10a, it becomes unhooked from the middle part 12 of the striker, whereby the part 12 remains in sealing contact with the washer 17 and prevents the ingress of moisture. The washer is formed from rubber, polyethylene or a PTFE cord.
Patent GB-1489476-A (GB)
Title: Door latch
IPC: E05B65/08
Filed: 1975-01-07
Abstract: 1489476 Door fastening RAM PARTITIONS Ltd 7 Jan 1975 [22 Feb 1974] 639/75 Heading E2A A door fastening comprises a monolithic box frame 2 for mounting on a door stile and having opposed, elongate walls 10a, b, a tongue 18 integral with one wall 10a projecting outwardly therefrom and extending longitudinally thereof, a slot 20 in said wall 10a aligned longitudinally with the tongue, a web 22 joining the walls 10a, b and having a seating 16 for a hub 4 rotatable therein about an axis perpendicular to the web, means e.g. spring arms 32 to clamp hub 4 against web 22, a hook 12 radially attached to the hub and rotatable therewith between an operative position extending through slot 20 to engage a keeper (not shown) and an inoperative, at least partially withdrawn position and a lever 8 also radially attached to the hub and extending through a slot 36 in wall 10b and movable to rotate hub 4 and the hook 12 between its operative and inoperative positions. Spring arms 32 may be mounted on a spring base 24, ends 28 of which are received in seatings 26 to stress the lever unit HL constituting lever 8 and hook 12, lever unit HL having a flattened zone (41, Figs. 4, 6, not shown). Hub 4 may also have a keyway K to receive the tail (T) of a cylinder lock (C, Fig. 1 not shown).
Patent GB-1041751-A (GB)
Title: Process for regenerating lead-contaminated catalytic composite
Inventor: MICHALKO EDWARD
IPC: B01J23/90
Filed: 1964-01-07
Abstract: A lead-contaminated catalytic composite of a refractory inorganic oxide carrier and an active component comprising at least one metal selected from Groups IB, VA, VIA and VIII of the periodic table is regenerated by treating it with an aqueous solution of a synthetic detergent separating the composite and drying it.  Anionic, cationic or non-ionic detergents may be used. Numerous examples are given.
Patent GB-524982-A (GB)
Title: Change-speed gearing, particularly for use in the drive of a motor-vehicle
IPC: F16D23/02
Filed: 1939-01-09
Abstract: 524,982. Variable-speed gearing. LAGONDA MOTORS, Ltd., and SEWELL, C. W. Jan. 9, 1939, No. 644. [Class 80 (ii)] In a change-speed gearing a gear change is produced by the sliding into engagement of positive clutch elements synchronized by coaxial electromagnetically operated means. A driving shaft 11 carries a gear 12 with dog clutch element 18 and a driven shaft 17 carries a freely mounted gear 16 with clutch element 19. Between the elements 18, 19 is an electromagnetic device comprising coil 25 energized from leads 31. The elements 18, 19 are freely mounted in carriers 21 on members 23 keyed to the shaft 17 and slidingly engaged by a sleeve 26. To directly couple the shafts 11, 17 movement of a gear-levercloses a contact to energize the coil 25. This causes the carrier 21 to revolve in synchronization with the dog element 18, the friction between the parts 21, 26 discouraging sliding movement of the sleeve 26 until synchronization has been attained. Axial movement to engage the parts 18, 26 can then be made: The circuit through the coil 25 preferably is broken before engagement of the parts 18, 26. In a modification, Fig. 2 (not shown), the electromagnet encircles the sliding clutch element which is. actuated by an internal push rod.
Patent GB-1401982-A (GB)
Title: Method and apparatus for chlorinating organic polymeric material
IPC: C08F2/00
Filed: 1972-06-01
Abstract: 1401982 Chlorination AIR PRODUCTS & CHEMICALS Inc 1 June 1972 [8 June 1971] 679/75 Divided out of 1401981 Heading C3P Organic polymeric material is chlorinated in a fluidized bed using dry chlorine in the fluidizing gas stream and activating chlorine by light filtered through an aqueous solution of an alkali metal nitrite which also acts as a heat exchanger to control the reaction temperature. Apparatus in which this process may be carried out comprises a reaction zone, a source of illumination, and a conduit positioned between the source and the reaction zone through which the alkali metal nitrate solution may be circulated from a reservoir. This conduit may take the form of annular sheath. In example sodium or potassium nitrite is used in the light filtering solution and the materials chlorinated are copolymers of vinyl chloride with isobutylene, lauryl vinyl ether, ethyl vinyl ether, n-butyl vinyl ether, iso-octyl vinyl ether and decyl vinyl ether. A number of chlorination zones may be arranged with the chlorine containing gas being directed through each one in turn and the fluidized particles may also be passed from zone to zone. Reference has been directed by the Comptroller to Specification 1,089,323.
Patent GB-772145-A (GB)
Title: A process for purifying ethylene oxide
Filed: 1955-01-10
Abstract: <PICT:0772145/III/1> Ethylene oxide is isolated from aqueous solutions thereof which contain carbon dioxide and other normally-gaseous impurities by separating the mixture in a fractionating column to give a small proportion of vapour fraction which contains all the normally-gaseous impurities and a liquid fraction comprising the purified solution, and then submitting the purified solution to distillation under such conditions that substantially anhydrous ethylene oxide is obtained as distillate. The process is particularly applicable to the working-up of the solutions of ethylene oxide obtained by absorbing in water the products of the catalytic oxidation of ethylene with air.  The gaseous products obtained by oxidizing ethylene with air in the presence of a catalyst containing silver are cooled in heat-exchanger 22 and then introduced via line 15 into absorption column 20.  Water or recycle solution (see later) is supplied to the top of this column through line 21.  The pressure in the absorption column is maintained between 50 and 300 p.s.i.g., the temperature being about 20 DEG -40 DEG C.  A gaseous mixture consisting chiefly of ethylene, nitrogen, carbon monoxide, carbon dioxide and oxygen leaves column 20 through line 23 and may be recycled to the convertor, preferably after washing with aqueous alkali to remove CO2.  The impure aqueous solution of ethylene oxide withdrawn from the base of column 20 is steam-distilled in column 25 at a pressure of 20-80 p.s.i.g. by steam introduced through line 26.  The aqueous liquid withdrawn from the base of column 25 is free from ethylene oxide and may be recycled via line 27 to the top of column 20.  The vapours leaving the top of column 25, which comprise ethylene oxide, steam, carbon dioxide and other gaseous impurities, are introduced through line 10 into distillation column 30 which is provided with a heating coil 31 at the base and a cooling coil 32 at the head, and is operated at a pressure of 20-80 p.s.i.g.  A gaseous fraction containing carbon dioxide and some ethylene oxide is withdrawn from the top of column 30.  The purified aqueous solution of ethylene oxide is withdrawn from the base of column 30 and is fed through line 34 to distillation column 35, which contains about 27 trays.  This column is operated at a pressure of 20-80 p.s.i.g., and substantially anhydrous vapours of ethylene oxide leave the head of column 35 and are condensed in condenser 39; part of the condensate is returned to column 35 as reflux, and the remainder is withdrawn from the system as product. The aqueous liquid withdrawn from the base of column 35 may, if desired, be fed into a plant in which any ethylene oxide remaining in it is converted into ethylene glycol.
Patent GB-654402-A (GB)
Title: Improvements in or relating to temperature responsive control apparatus
IPC: G05D7/01
Filed: 1948-01-09
Abstract: 654,402. Actuation of switches: protective cut-out arrangement. IGRANIC ELECTRIC CO., Ltd. Jan. 9, 1948, No. 753. Convention date, Jan. 10, 1947. [Class 38(v)] The circuit of a liquid-cooled electron tube 1 is broken should the rate of flow of the liquid drop, or the temperature of the liquid rise unduly. A bucket 26, receiving the cooling liquid through a pipe 11, is supported by a handle 25 on a resilient lever 22 which biasses upwardly the actuator button 21 of a micro-switch 2 connected in the control circuit of the tube. Normally the liquid rises a determined amount in the bucket and escapes solely through an orifice 32 in the bucket floor whereby the lever 22 is held down and switch 2 permits operation of the tube. If the temperature of the liquid increases sufficiently, a bimetal sleeve 27, fastened at one end by a rivet 33 to the inside of the bucket wall, contracts and allows the liquid to escape through further holes 29, the reduced force on the lever 22 causing it to actuate the switch 2 and disconnect the tube 1. The lever will operate similarly in the event of a reduction in the flow of the liquid.