baber/WOPTO huggingface dataset:
Patent GB-542133-A (GB)
Title: Improvements in or relating to water purification apparatus
IPC: C02F1/52
Filed: 1940-05-23
Abstract: 542,133. Purifying water. EVANS, D. J. May 23, 1940, No. 9114. [Class 46] [Also in Group XXXVI] In a water purification apparatus, a stream of water passing through an injector 22 or through two injectors draws brine from a tank 14 through an electrolytic cell 27 and a second reagent from a tank 15 through a sight-glass apparatus 66. The reagents are discharged with a tank of water to be purified. The second reagent may be ammonium chloride or sulphate, for formation of chloramines, alum or soda lime for flocculation or a chlorinated solution for superachlorination. The electrolytic cell is made in the form of a rectangular prism having a rectangular cavity with rounded corners, which receives two electrodes 33, 33<SP>1</SP> formed of colloidal graphite and held apart by insulating spacers. Current is supplied by conductor rods 27 screwed into the electrodes. The inlet passage 25 is intersected by a transverse passage containing a loose cylindrical plug 49 which regulates the flow and the outlet passage contains a sight glass 53 and a non-return valve 56. In an alternative construction, the prismatic electrolytic cell is formed with its base in the form of a horizontal cylinder which receives cups bearing circular electrodes. Specification 400.247, [Group XXXVI], is referred to.
Patent GB-833406-A (GB)
Title: Improvements relating to moving coil loudspeakers and similar transducers
Inventor: HAM RONALD HASTINGS RACK
IPC: H04R1/30
Filed: 1957-01-04
Abstract: 833,406. Loud-speakers. TANNOY Ltd. March 21, 1958 [Jan. 4, 1957], No. 9154/58. Divided out of 465/57. Class 40 (4). The moving parts of a moving-coil loudspeaker are enclosed in a flameproof casing 10, the diaphragm 25 being adjacent a group of flameproof openings 27 in a relatively thick front assembly 28 through which the sound is emitted. As shown the central polepiece 2 is mounted on the permanent magnet slug 4 which is secured to the back plate 5 by screw 6, the remainder of the magnetic circuit consisting of an outer polepiece 3 and a cylindrical part 7, the space between part 7 and the slug 4 being filled with inert material. The fireproof casing 10 consists of a casting 11 fitted with a removable front plate 12. The openings 27 are constituted by a number of concentric annular slits formed between concentric tubes 30, the assembly of tubes being mounted within a circular opening in the front assembly 28 while the central space is filled by a plug 31. The tubes are located by thin spacers (not shown). Each opening 27 is approximately sixteen thousandths of an inch wide and the narrow width in combination with the relatively high thermal capacity provided by the thickness of the assembly 28 and the plug 31 renders these openings flameproof. A normal type of reentrant horn is fitted. The flameproof casing 10 also encloses a transformer 15 the secondary winding of which is connected to the speech coil 1 by conductor 16, and the primary winding of which is supplied through conductor 17 connected to a bolt 18 passing through an insulating bush 19 in the wall of an auxiliary chamber 20 fitted with a rear plate 21. Connection to the chamber 20 from outside the casing is made by way of a flameproof gland 22.
Patent GB-1478932-A (GB)
Title: 8-(3-chromanyl)-1-oxa-3,8-diazaspiro(4,5)decan-2-ones and thiones
IPC: A61K31/435
Filed: 1975-03-06
Abstract: 1478932 8 - (3 - Chromanyl) - 1 - oxa- 3,8 - diazaspiro(4,5)decan- 2 - ones and thiones SCIENCE UNION ET CIE SOC FRANCAISE DE RECHERCHE MEDICALE 5 March 1976 [6 March 1975] 9356/75 Heading C2C Novel compounds of the Formula I wherein R 1  is hydrogen, fluorine, or C 1-5 .alkyl, R 2  is hydrogen, methyl or ethyl, R 3  is hydrogen or C 1-4  alkyl and X is oxygen or sulphur and acid addition salts and also base-addition salts when X is sulphur may be prepared by (1) reacting a 3-chromanone II with a spiro-decane III and hydrogenating the resulting enamine IV (II) reacting a compound V with a carbonic or thiocarbonic acid derivative, or (III) when X is oxygen submitting a hydrazide VI to a Curtius rearrangement, the product of which cyclises in situ. 1 (3 - Chromanyl) - 4 - aminomethyl 4- piperidinol is prepared by forming 1-(3-chromanyl) - 4 - cyano - 4 - piperidinol from 1- (3 - chromanyl) - 4 - piperidone and thereafter hydrogenating the cyanohydrin. [1 - (3 - Chromanyl) - 4 - hydroxy - 4 - piperidyl] acethydrazide is prepared by reacting 1-(3- chromanyl) - 4 - piperidone in Reformatsky reaction to form ethyl[1 - (3 - chromanyl)- 4 - hydroxy - 4 - piperidyl] acetate followed by reaction with hydrazine. Pharmaceutical compositions of the compounds I or physiologically acceptable salts thereof with the usual excipients show bronchodilatory and anti-anaphylactic properties when administered orally, parenterally or rectally.
Patent GB-1443278-A (GB)
Title: Walter support for wall form systems
IPC: F16B7/08
Filed: 1974-03-01
Abstract: 1443278 Brackets C I WILLIAMS 1 March 1974 [15 March 1973] 9416/74 Heading A4B [Also in Division E1] Horizontal walers 13 used for bracing wall shuttering are supported by reversible brackets 23, each of which has two opposed support edges (the upper and lower edges as shown) for supporting walers of two different cross-sectional dimensions. Each bracket has a stop 32 or 33 at one end of each support edge, and is located against a vertical stud by tabs 24, 25, the distance between each stop and the far edge of the tab associated with the same support edge being made equal to one of said cross-sectional dimensions, e.g. 3# inches. The stops 32 and 33 are given different shapes so that they can be distinguished in the dark. The tie 16 is located by a wedge 19 engaging a groove (20) in the tie, and by a hair-pin-like spacer 21 engaging in a hole through the tie, and abutting the inner face of the walers.
Patent GB-668091-A (GB)
Title: Method of transferring heat to a fluid and apparatus therefor
IPC: F28F21/04
Filed: 1949-04-06
Abstract: <PICT:0668091/III/1> <PICT:0668091/III/2> A fluid is heated by causing it to flow throuh a tube or a number of substantially parallel tubes situated between two walls and causing a beam of radiation emitted by a source of radiant heat at one of the walls to impinge on the other wall but not on the tube or tubes, the source being such that substantially no combustion occurs in the space between the walls, so that the tube or tubes is or are heated by radiant heat falling upon it or them after re-radiation from said other wall or both walls.  The fluid may be one undergoing a catalytic or non-catalytic reaction, e.g. ethylene dichloride being converted to vinyl chloride.  In Fig. 3 a plurality of vertical tubes 17 are arranged between a circular inner wall 12 and a polygonal outer wall.  Each inner face of the polygonal wall has a vertical row of 6 radiant burners 19 (see Group XI) each giving a conical beam of radiant energy as shown. Fluid flows to the tubes 17 from tubes 16 in a preheating section within the inner wall.  The tubes 16 are heated predominantly by combustion gases from the burners 19 entering the bottom of the preheating section and from an auxiliary burner (not shown) at the bottom of the heating section but also by combustion gases from burners 19 passing over the top of wall 12.  In Fig. 6 a plurality of horizontal tubes 46 and 47 are located in two vertical tiers between walls 40 and 41.  Each wall has horizontal rows of radiant burners 48 emitting beams of energy as shown.
Patent GB-723033-A (GB)
Title: Improvements in or relating to the preparation of vinyl acetate
Inventor: NICOL DONALD LAURENCE
IPC: C07C69/15
Filed: 1952-04-15
Abstract: Vinyl acetate is produced by reacting acetylene with acetic acid in the liquid phase in the presence of a mercury compound substantially insoluble in acetic acid, at a temperature in the range between 40 DEG  C. and 100 DEG  C., the time of reaction being limited to a value not greater than that given by the formula log(t/2)=0.031(110-T) where t is the maximum recommended reaction time in minutes and T is the temperature in degrees Centigrade. Preferably the reaction time is a half of t and the reaction temperature is 60 DEG  to 75 DEG  C.  The termination of the reaction may be effected by reduction in temperature but preferably by addition of pyridine or sodium acetate.  The process may be operated at either atmospheric or superatmospheric pressure, preferably between 10 and 25 atmospheres gauge, the reaction time being independent of pressure.  The process may be batchwise or continuous. Examples illustrate the use of a catalyst comprising mercuric oxide and boron trifluoride in acetic acid wherein (1) a suspension thereof was kept stirred and fed continuously to a reactor, with acetylene fed to the bottom of the reactor in excess to maintain the liquid in agitation; liquid was continuously withdrawn and treated with anhydrous sodium acetate in acetic acid; (2) the reaction was carried out in an autoclave shaken in a heated water bath while the acetylene pressure was maintained at 20 atmospheres gauge; the reaction was terminated by adding pyridine; (3) the reaction was carried out as in example (2) but using three times the quantity of acetic acid. Comparative yields are given for various reaction times and temperatures.  Mercury compounds used as catalysts may be precipitated in situ by adding a solution of boron trifluoride in acetic acid to mercuric oxide dissolved in acetic acid.  The complex mercury compound contains the acetate radical as well as boron and fluorine. Alternatively, sulphuric acid, oleum or a solution of sulphuric acid in acetic acid may be used to precipitate mercuric sulphate from mercuric oxide in acetic acid.  Oleum treated with acetylene precipitates the mercury salt of (HO.SO2)2CH. CH.(O.SO2.OH)2.  Specification 231,841, [Class 2 (iii)], is referred to.ALSO:A boron trifluoride-mercuric acetate complex may be prepared by dissolving mercuric oxide in acetic acid and adding to this a solution of boron trifluoride in acetic acid.  In example (1), 20 gr. of red mercuric oxide was dissolved in 11 of glacial acetic acid. 20g of 40 per cent boron trifluoride in acetic acid was diluted to 1 litre with acetic acid, and mixed with the mercuric acetate solution, whereby a suspension of the complex in acetic acid was formed.  The complex may be used in the preparation of vinyl acetate from acetylene and acetic acid (see Group IV (b) ). Specification 231,841, [Class 2 (iii)], is referred to.
Patent GB-195978-A (GB)
Title: Improvements in sash windows
IPC: E05F17/00
Filed: 1923-04-06
Abstract: 195,978. Scheldeman, J. April 8, 1922, [Convention date]. Hinges readily separable about hinge pin.-In a hinged sliding window of the kind which hinges on double-jointed hinges, the intermediate link or cap 21 is hinged to the sash and normally rests in a recess 22 and is engaged with the fixed pivot 17 for hinging, the sash being preferably positioned by a notch and tenon 27, 28. A removable packing - member 29 maintains engagement between the notch and tenon.
Patent GB-535641-A (GB)
Title: Weft-fork for circular weaving looms
IPC: D03D37/00
Filed: 1940-05-30
Abstract: 535,641. Circular looms. SAINT FRERES SOC. ANON. May 30, 1940, No. 9508. Convention date, July 18, 1939. [Class 142 (ii)] Between the shuttle eye and the fell the weft 11 passes through the sinuous arm 12 of a lever pivoted on the shuttle, the other arm 13 serving as one of the contacts 13, 14 in an electric circuit between the insulated sections 3, 4 of the shuttle race. On weft failure centrifugal action closes the contacts to stop the loom, expose the shuttle, &c. The arm 12 serves as a weft tensioner.
Patent GB-1083451-A (GB)
Title: A sealing member and a pipe joint incorporating the same
Inventor: THOMAS GERALD EDWARD SAMUEL
IPC: F16L17/025
Filed: 1963-03-11
Abstract: 1,083,451. Seals; pipe couplings. ALLIED IRON FOUNDERS Ltd. March 10, 1964 [March 11, 1963], No. 9508/63. Headings F2B and F2G. In a pipe joint, the space between a metal (e.g. cast iron) socket 3 and a plastics (e.g. P.V.C.) spigot 4 is sealed by means of a substantially cylindrical resilient sleeve 1 provided with one or more pairs of internal and external peripheral protuberances 2, which are compressed between the spigot and the socket, and with a retaining flange 5 or 6 at or towards its outer end for engagement with the socket to prevent linear or concertina movement of the sleeve with respect to the socket upon insertion of the spigot into the sleeve. In Fig. 2, the flange 5 abuts against the end 5a of the socket whereas in Fig. 3 the flange 6, which is rounded, lies within a groove 7 in the socket. The inner end 8 of the sleeve is dimensioned to sealingly engage the spigot. The sleeve may be of rubber or plastics.
Patent GB-1223657-A (GB)
Title: A device for distinguishing between two gases of different kinematic viscosities
IPC: A61M16/00
Filed: 1969-02-21
Abstract: 1,223,657. Wrong gas detector. COMPAGNIE DES COMPTEURS. 21 Feb., 1969 [27 Feb., 1968], No. 9522/69. Heading A5T. [Also in Divisions G1, G3 and G5] A device for distinguishing between two gases such as nitrous oxide and oxygen both used in anaesthesia, comprises a narrow duct 6 in a base 4 and a socket 5 to which a gas may be supplied. Nitrous oxide when connected to 5 and after flowing through 6 emits a turbulent jet in a flared portion 7, and because of a duct 10 adheres to the wall of the chamber 7 and does not produce a pressure in a pipe 8. A pipe 11 also supplies the nitrous oxide to an oscillator 2 and the gas flows across to a pipe 12 having a nozzle 13 which causes the flow from 11 to 12 to interrupt and re-make alternately. This alternating flow oscillates 2 which with the aid of an acoustic resonator 1 produces a whistling noise or actuates a visualalarm. When the socket 5 is connected to oxygen however no turbulence is created by the gas in the chamber 7 and a pressure builds up in pipe 8 which prevents the oxygen now flowing in pipe 11 from flowing across to pipe 12 to produce an oscillation and whistle or other warning.
Patent GB-1491638-A (GB)
Title: Apparatus for severing sliver in a textile machine
IPC: D01G1/08
Filed: 1976-03-10
Abstract: 1491638 Sliver coiling and severing OM Ltd 10 March 1976 [29 May 1975] 09574/7f Heading D1F Sliver S is packed into (rotating) can I by a guide tube 11 which is caused to swing about pivot 9, the guide tube having a reserve plate 15 pivoted at 18 and movable from an almost horizontal position at which the sliver is gripped between the plate and stop 22 and an almost vertical position, Fig. 2, a positively drivable severing roller 23 and a nip roller 27 mounted on a pivoted support plate 25. With plate 15 and nip roller 27 in the positions shown in Fig. 2 sliver supplied by conveyor 5 is coiled in can 1. When the can is full pneumatic cylinder 20 is activated to raise plate 15 to the horizontal position to grip the sliver. Roller 23 is driven and cylinder 29 is activated to move roller 27 so as to press the sliver against roller 27. The sliver is thus severed. Preferably the distance between the two sliver gripping points A, B is greater than the fibre length. Even sliver crimped e.g. in stuffer box (8, Fig. 1, not shown) is reliably severed. The can is replaced by an empty can and nip roller 27 and reserve plate 15 are then swung back so that the sliver which has accumulated on the reserve plate falls into the empty can. Control means may be provided for automatically activating in sequence the drive for severing roller 23 and pneumatic cylinders 20 and 29.
Patent GB-724587-A (GB)
Title: Improvements in and relating to automatic record changers for phonographs
IPC: G11B17/14
Filed: 1953-04-08
Abstract: 724,587. Automatic gramophones. WEBSTERCHICAGO CORPORATION. April 8. 1953 [April 16, 1952], No. 9590/53. Class 40 (2) An adaptor to enable an automatic gramophone with record-supporting centre-post to accommodate records with 1¢in. diameter holes, comprises a housing 17, 18 carrying retractable shelves 54, 55 which are interlinked by pins 37, 38 with separator plates 33, 35 which in turn are operated by a radially moving ejector 16 mounted in the centre-post 11. As the separator plates 33, 35 are moved outwardly about pins 34, 36 in a plate 28, limbs 41, 42 on the said plates 33, 35 engage pins 37, 38 to retract the shelves 54, 55 against the pressure of a spring 51. When the ejector makes its return movements, the spring 51 acts to extend the shelves 54, 55 and retract the separator plates 33, 35. The upper part 17 of the housing is provided with a spring-loaded push-button 23, whereby the mechanism may be operated manually to release a record on to the turntable.
Patent GB-269189-A (GB)
Title: Electric incandescent lamp of tubular form
IPC: H01K1/24
Filed: 1927-04-07
Abstract: 269,189. Mayer, H. April 8, 1926, [Convention date]. Filaments, supports for. - In tubular lamps, the filament 1 is supported by a wire helix 2 that surrounds it throughout its length and abuts against the inner wall of the tubular envelope. The supporting hooks 5 are attached to the carrier helix by insulating beads 3, and the helix may be formed in lengths connected together by insulating beads 4.
Patent GB-402650-A (GB)
Title: Improvements in horological mechanism
IPC: G04B33/12
Filed: 1933-03-30
Abstract: 402,650. Timepieces. BECK, E., 18, Rue de Lancy, Geneva, Switzerland. March 30, 1933, No. 9629. Convention date, Aug. 11, 1932. [Class 139.] Driving-mechanism; winding-mechanism.- A one-day movement is converted into a longterm movement by adding an intermediate wheel 4 which is driven by a large spring housed between plates 12 outside the rest of the movement this large spring being wound by a pinion 14 ; the arbor of this pinion is central of the dial and around it the minute and hour pipes rotate. The wheel 4 drives wheels 2, 1 which latter replace the normal spring barrel and rotate the motionwork for the hands. Rotatably mounted on the shaft 5 of wheel 4 is a sleeve 10 to which are fixed the inner end of the large spring in space 7 and a wheel 11 carrying a pawl 13 which coacts with ratchet wheel 9. The latter is rigid on shaft 5 and wheel 11 gears with pinion 14. The outer end of the spring is attached to a pillar 18. When button 15 is turned, wheels 14 and 11 wind up the inner end of the spring, pawl 13 riding idly over ratchet 9 and sleeve 10 rotating about shaft 5. In the return direction the spring, the sleeve 10 and the pawl 13 drive the members 9, 5, 4, 2, 1.
Patent GB-1464816-A (GB)
Title: Corona charging devices
IPC: G03G15/02
Filed: 1975-03-07
Abstract: 1464816 Corona charging apparatus LA CELLOPHANE 7 March 1975 [8 March 1974] 9645/75 Heading H1X A corona charging device comprises a metallic support 5, Fig. 1, two spaced apart insulating end pieces 2 and 3, Figs. 4 and 5, a corona wire 1 bent in the form of a hairpin and carried by the insulating end pieces so as to be spaced from the support, the wire 1 being bent around a tensioning member 4 on one end piece 2, which member is urged away from the other end piece by a spring 9 which produces a desired tension in the wire 1, the free ends of the wire being clamped in a slit 10 in the other end piece 3 against a conductor 11 extending transverse to the free ends of the wire by at least one wedge 12, the conductor 11 being connectible to a source of high voltage and the metallic support being connectible to earth. The metallic support is trough-shaped. The conductor 11 has shoulders 13 which hold the wire 1 externally in position, and has a connector at one end for a high voltage lead. Two wedges 12 may be provided, one for each end of the wire so that one end of the wire can be secured in position by one wedge while the other wedge is removed to enable the tension of the wire to be adjusted.
Patent GB-292296-A (GB)
Title: Improvements in and relating to water heating apparatus and the like
IPC: F28D7/10
Filed: 1927-04-08
Abstract: 292,296. Veitch, J. April 8, 1927. Heating liquids; feedwater, heating.-Water or other liquid is passed in series through casings 1, 2, 3 through which passes a continuous flue 4, or a number of such flues, adapted for series connection as by a spigot and socket joint 13, 14. Access to the flues is obtained from the ends of the straight junction box 15. The passage of hot gases is controlled by dampers 20, 25. In a modification the. sections are inclined and mounted one above the other, the flues being connected by junction boxes.
Patent GB-285276-A (GB)
Title: A golf practice device or game apparatus
IPC: A63B63/00
Filed: 1927-04-08
Abstract: 285,276. Chase, W. M. April 8, 1927. Measuring the force of a blow. - In a golfpractising device of the type wherein a curtain struck by a golf ball actuates an indicator, the indicator comprises a strip that is moved in accordance with the movement of the curtain and remains in the position to which it is moved, the strip giving an accumulative indication of a number of strokes. A curtain 7, Figs. 2 and 3, is suspended from a horizontal, rotatable shaft 6, one end of which is connected through a pawl 12, ratchet wheel 9 and gear wheels 13, 14 to a rack 15 carrying a graduated strip 16, Fig. 5. The curtain swings backward when struck by a ball. thereby raising the strip 16 to indicate the length of flight of the ball had it been unimpeded. The forward swing of the curtain is limited by a stop 8 and does not affect the position of the strip. The strip is detachable and may be replaced by other strips representing holes of different lengths.
Patent GB-1044455-A (GB)
Title: Microwave ovens
IPC: H05K9/00
Filed: 1965-03-08
Abstract: 1,044,455. Microwave ovens. PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd. March 8, 1965 [March 10, 1964], No. 9714/65. Heading H5H. To prevent H.F. energy leakage a microwave oven has opposing recesses 6, 7 in the oven door 3 and in the door surround 1, each #/4 deep and filled with epoxy resin; another recess 10 in the door is filled with lossy material. The surround and the door may be of Al.
Patent GB-1208822-A (GB)
Title: Copolymers of vinyl halogenoesters
Inventor: CLACHAN MARGARET LOUDON
IPC: C08F18/20
Filed: 1968-03-25
Abstract: 1,208,822. Terpolymers. BEXFORD Ltd. 24 Feb., 1969 [25 March, 1968], No. 9715/69. Divided out of 1,208,821. Heading C3P. Terpolymers are formed from units of (1) at least 50% mole of a vinyl chloroacetate or bromoacetate, (2) a comonomer which forms a homopolymer having a glass-rubber transition temperature below 0 C. and (3) a comonomer providing carboxyl, hydroxyl, amido or N- substituted or disubstituted amido or tertiary amino groups. Comonomer (2) is preferably alkyl acrylate or methacrylate, polyalkylene oxide itaconate or maleate, vinyl alkyl ether, vinyl ester, alkene, alkadiene or alkylstyrene. The terpolymer is formed by polymerizing the three monomers in aqueous dispersion or in solution or by esterifying a suitable polymer containing hydroxyl groups with a chloro- or bromo-acetic acid. In the examples, copolymers of vinyl acetate with ethylene, 2-ethylhexyl acrylate or butyl acrylate are hydrolysed then partially esterified with mono- or di-chloroacetic or bromoacetic acid; terpolymers are formed in aqueous dispersion, initiated by ammonium persulphate-sodium metabisulphiteferric ammonium sulphate, from monomers selected from (1) vinyl chloroacetate, (2) ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate or 2-ethoxyethyl acrylate, and (3) acrylamide, itaconic acid, N-methylacrylamide, dimethylaminoethyl methacrylate, N-(1 : 1-dimethyl-3 oxobutyl) acrylamide, methacrylamide or acrylic acid; and terpolymers are formed in solution in methyl ethyl ketone using benzoyl peroxide or azobisisobutyronitrile from (1) vinyl chloroacetate, (2) vinyl isobutyl ether, di-(polypropropyleneoxy) itaconate or vinyl versatate, and (3) acrylamide, methacrylamide or 2-hydroxyethyl methacrylate.