baber/WOPTO huggingface dataset:
Patent GB-414452-A (GB)
Title: The manufacture of asymmetrical thiourea-derivatives
IPC: C07C335/16
Filed: 1933-03-10
Abstract: Thiourea derivatives of the formula R1R2NCSNH2, where R1 is an aryl group and R2 is hydrogen or an alkyl or aryl group, are prepared by heating mineral acid salts of amines of the formula R1R2NH with an alkali thiocyanate or ammonium thiocyanate in the presence of an inert organic diluent.  The mineral acid salt of the amine may be prepared in situ, for example by adding sulphuric acid or gaseous hydrogen chloride to a mixture of the amine with the organic diluent. The thiourea derivatives may be converted in known manner into thiazole derivatives without intermediate isolation.  Examples are given of the preparation of phenylthiourea from aniline hydrochloride; 4-ethoxyphenylthiourea from p-phenetidine hydrochloride or sulphate; p-tolythiourea from p-toluidine sulphate; asym. diphenylthiourea from diphenylamine hydrochloride; asym. ethyl-1-naphthylthiourea from N-ethyl-1-naphthylamine hydrochloride; 8-methoxynaphthyl-1-thiourea from 8-methoxy-1-naphthylamine hydrochloride; indazyl-4-thiourea from 4-aminoindazole hydrochloride; 1 : 5-naphthylenedithiourea from 1 : 5-naphthylenediamine hydrochloride; carbazyl-2-thiourea from 2-aminocarbazole hydrochloride; 9 - ethylcarbazyl - 3 - thiourea from 9 - ethyl - 3 - aminocarbazole hydrochloride; and 8-chloroquinolyl - 5 - thiourea from 8 - chloro - 5 - amino - quinoline hydrochloride; in each example the amine salt is heated to 90--130 DEG  C. with sodium or ammonium thiocyanate in the presence of an organic diluent, which may be chlorobenzene, o-dichlorobenzene, benzine, or butyl alcohol. 4-Ethoxyphenylthiourea obtained as described above may be treated, without isolation, with disulphur dichloride to form 2-amino-6-ethoxybenzothiazole; similarly, p - tolylthiourea obtained as described above may be treated with bromine or sulphuryl chloride to form 6-methyl-2-aminobenzothiazole. Specifications 345,735 and 347,141 are referred to.
Patent GB-398508-A (GB)
Title: Improvements relating to electric insulators
IPC: H01B17/02
Filed: 1932-03-11
Abstract: 398,508. Insulators. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Ohio Brass Co. ; Mansfield, Ohio, U.S.A.) March 11, 1932, No. 7361. [Class 36.] To control the distribution of stress in the dielectric material of a load-sustaining insulator comprising connected metal and dielectric parts, and to allow for differential expansion of the metal and dielectric parts, the parts are connected together by co-operating wedging surfaces between which are interposed resilient rollers of graded resiliency. The resilient rollers are preferably helical springs formed of wire of circular or rectangular cross section. Fig. 1 shows a suspension insulator of the pin and cap type having an internally threaded split sleeve 26 cemented into the cavity.of the insulator and into which is screwed the screw-threaded upper end 27 of the suspension pin 12, a helically coiled spring 30 being inserted between the co,- operating threads on the sleeve and pin, as shown in Fig. 2. The spring 30 is graded in resiliency from end to end, and for this purpose the spring may be formed with coils of varying pitch, diameter or thickness ; or sections of the coil may be provided with internal reinforcement, preferably in the form of a wire rod or helical spring. To compensate for pin stretch under heavy loads, the screw threads on the sleeve may be of slightly greater pitch than those on the pin, or the diameter or slope of the threads on either the pin or sleeve, or on both, may be graded. To permit movement of the pin relatively to the cement filling 25, a coating 34 of wax, asphalt, or other yielding material may be applied to the pin, the coating also extending over a rib 37 on. the pin which is embedded in the cement to prevent rotation of the pin. The sleeve 26 may also be coated with the yielding material. The cap 11 is cemented to the insulator head 10 and is formed with annular corrugations 15 for co-operation with resilient members 14 which are disposed in grooves 13 in the insulator head and which preferably consist of helical springs of different resiliency. To allow for relative movement between the cap and insulator head, a wax coating 21 may. be applied to either the cap or insulator head under cement 19,. the resilient members 14 being embedded in wax 18 for a similar purpose. In modified constructions, the resilient members 14 may be omitted or may be used in conjunction with a sleeve similar to that by which the pin is secured to the insulator. Various forms of pins and sleeves, and of compound springs for use between the pin and sleeve or between the cap and insulator head are described.
Patent GB-1046261-A (GB)
Title: Improvements in or relating to screw air compressors
Inventor: VAGENIUS HANS BORJE
IPC: F04C18/16
Filed: 1963-02-23
Abstract: 1,046,261. Rotary compressors. JAMES HOWDEN & CO. Ltd. Feb. 17, 1964 [Feb. 23, 1963], No. 7372/63. Heading F1F. In a two-stage, intermeshing screw air compressor, comprising in each stage a male and female rotor, one rotor from each stage is mounted on a common shaft supported on only two bearings located at each end of the first stage. As shown in Figs. 1 and 2, an oilinjected air compressor 10 having first and second stages 15, 16 includes parallel shafts 11, 12 mounting respectively first and second stage male rotors 13, 14, and first and second stage female rotors 19, 20, with the helixes of the second stage rotors of opposite hand to those of the first stage rotors so that the outlet 37 from the first stage is adjacent the outlet 39 of the second stage to enable axial thrust loads on the two shafts to be substantially cancelled out and so permit the use of only two bearings 30, 31 on each shaft and the shorter second stage rotors 14, 20 to overhang with respect to the bearings 31. In the embodiment shown, the diameters of the rotors of the second stage are identical with those of the first stage. In another embodiment, in which the diameters of the second stage rotors are less than those of the first stage rotors, only one shaft is common to a rotor in each stage, the female rotors being mounted on separate shafts bearingly supported at either end. The male and female rotors of the second stage may be transposed so that instead of carrying two male rotors or two female rotors, the common shaft carries a male rotor and a female rotor. The female rotor of the second stage instead of being keyed to its shaft may rotate freely on bearings on a stationary shaft.
Patent GB-687441-A (GB)
Title: Apparatus for viewing photographic transparencies
IPC: G02B27/02
Filed: 1951-03-30
Abstract: 687,441. Viewing photographic transparencies. BERKLAND, J. C. March 30, 1951 [March 31, 1950], No. 7418/51. Class 98 (ii). [Also in Groups XV and XVIII] A rectangular frame 10 is made of hollow frame members 10a, 10b in one or more of which is housed a source of artificial light, the back of the frame being closed by a ground-glass plate 24 and the front of the frame being adapted to support the photographic transparency 21. The frame members take the form of prisms each having trapezium cross - section, the large parallel faces facing inward and the small parallel faces facing outward, and are mitred to fit together. The front faces 13 are chamfered. The light sources, e.g. electric lamps 15, are disposed, pointing in opposite directions, inside the frame members 10a. For cooling, slots are formed in the back of members 10a, 10b. Current leads are led through the slot in the lower member 10b and round the inside of the frame to the lamps. A U-shaped support may be pivoted to the back of the frame.
Patent GB-1522412-A (GB)
Title: Water treatment
IPC: C02F3/08
Filed: 1976-02-25
Abstract: 1522412 Fish tanks RHEINTECHNIK WEILAND UND KASPAR KG 25 Feb 1976 [28 Feb 1975 3 Oct 1975] 7464/76 Heading A1A [Also in Divisions Bl and C1] In a fish farming installation fish tanks 31 are arranged in series with a water treatment tank 1 in which the water is aerated and microbiologically purified, and a settling tank 12 (see Figs. 2-4, not shown, and Divisions B1 and Cl). Water overflows from the settling tank into a tube 51 above the fish tanks discharging as a shower through outlets 52. The tanks have perforated air supply tubes 53 discharging over the tank bottoms to keep solids therein in suspension. Water leaves the fish tanks through screens 55 and conduits 26. In a modification (Fig. 9, not shown) the fish tank (111) has a funnel shaped bottom in which is a screen (118).
Patent GB-667343-A (GB)
Title: Improvements in or relating to pneumatic motors
IPC: F15B15/12
Filed: 1950-03-24
Abstract: 667,343. Oscillating-vane motors. TRICO PRODUCTS CORPORATION. March 24, 1950. [March 25, 1949] No. 7490/50. Class. 110(ii). A pneumatic fluid pressure motor has a vane 2 formed of two spaced plates 23 provided with driving means 15, limited relative movement being allowed between the parts 2, 15. In one form the means 15 comprises two plates riveted together at 17 and secured to the driving shaft 1 by a rivet 16, a projecting tongue 19 driving the vane through a bracket 20. Clearances 18 are provided around rivets 12 which hold together the two parts of the vane. Each vane section comprises inner and outer plates, 22, 23 with an interposed packing 24, with the ends arranged as shown
Patent GB-772315-A (GB)
Title: Method of preparing a compact and air-tight tablet
IPC: A23G1/20
Filed: 1955-03-15
Abstract: Compact air-tight medicinal tablets or confectionery are prepared by compressing a granulate or powder containing the active substances e.g. medicines, colouring or flavouring substances, which is solid at room temperature but sinters or melts at a temperature above 40 DEG C., to form tablets which are sintered or melted to become compact without losing their external shape.  The tablets may be coated in known manner, e.g. with sugar, before and/or after being sintered which may then take place at a temperature such that the mass is more or less melted within the coating.  The granulate or powder may be prepared by mixing the normal components of a tablet base e.g. mono-, di- or polysaccharides, sorbitol, mannitol, talcum, starch, gelatin or gum arabic, heating the mixture to remove water if desired, adding the active substances e.g. etheric oils, citric acid and citric oil, to the cooled plastic mass and grinding the mass when hardened.
Patent GB-116274-A (GB)
Title: Improvements in and relating to Protecting Means for Ships or Vessels.
Inventor: HOLZAPFEL ALBERT CHARLES AUGUS
IPC: B63G9/00
Filed: 1918-05-04
Abstract: 116,274. Holzapfel, A. C. A. May 16, 1917, [Convention date]. Protecting.-To protect vessels against torpedoes, mines, &c., a belt is formed around the hull which comprises a skin 7, an inner group of cubical or other shaped air-tight tanks or cases 12, and an outer filling of blocks of soft and light wood 13, such as balsa wood which may be impregnated with paraffin wax.
Patent GB-326018-A (GB)
Title: Improvements in automatic temperature alarms for example fire-alarms
IPC: G01K5/16
Filed: 1929-03-08
Abstract: 326,018. Hume, A. M. March 8, 1929. Alarms operated by expansion of liquids.-In an alarm-operating device or thermal switch of the kind employing a mercurial thermometer 1 with an open enlargement or reservoir 3 at its upper end into which two contact strips 4, 5 dip, the thermometer is secured to a base plate 9 with an insulating layer 11 interposed. The contact strips are secured to terminals 8 passing through the base plate, and are bent over the edge of the reservoir, as shown, so that they may readily be adjusted. The base plate and layer 11 have one or more apertures 9<a>, 11<a>, preferably covered by wire gauze, to allow access of air to the thermometer. Brackets 13, 14 serve to secure the device in spaced relation to a wall. A loose cover 15 with gauze panels 15<a> is preferably provided. The device may be arranged in any existing house bell circuit. Preferably, a testing device is provided, comprising a bar 21 which can be pulled down by a chain 25 against a spring 24 to bridge the terminals 8.
Patent GB-1254937-A (GB)
Title: Data storage system with a large storage capacity and short access time
IPC: G11B7/135
Filed: 1969-02-12
Abstract: 1,254,937. Uses of photochromism. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 12 Feb., 1969 [13 Feb., 1968], No. 7622/69. Heading C4S. [Also in Division G4] A data-storage system comprises a modulated laser source and a rotatable drum bearing a recording substance, generally organic which becomes discoloured under the influence of a laser beam. Two light beams (e.g. UV) from a laser can be modulated with data in respective electro-optical modulators before feeding a 4- stage digital electro-optical light deflector which can supply either beam to any one of a respective 16 galvanometer mirrors. Each of the 32 mirrors serve to supply the beam to any desired track of a respective group of 175 circumferential tracks on the drum. During recording, the' two modulators are used alternately, to record one track each at a time, the modulator not in use blocking its light beam, so that while a track supplied by a galvanometer mirror in one set of 16 is being recorded, a mirror in the other set of 16 can be positioned ready to record the next (in time) track. The same apparatus is used for. positioning the light for read-out, using the same or a different laser and the same or a different wavelength, the drum consisting of a  hollow cylindrical transparent shell (bearing the tracks) supported by a pair of base-to-base reflecting cones (truncated or not), light transmitted through the tracks being reflected by one cone or the other out to one of two photodetectors. Recording may be permanent or not, and read-out may be destructive or non- destructive. Extra drums may be provided. The materials may be as in U.S.A. Specification 3,299,079 disclosing spiro[benzopyran-2,2<SP>1</SP>-indoline] derivatives exhibiting phototropism when in specified solvents. The materials are chelatable by transition metal ions e.g. Cu, Co, Ni, Zn, Cr.
Patent GB-1319382-A (GB)
Title: Apparatus for simultaneously decanting liquid from a number of containers
IPC: B01L99/00
Filed: 1971-03-24
Abstract: 1319382 Automatic analysis; centrifugal separator; agitating liquids BECTON DICKINSON & CO 21 April 1971 [29 April 1970] 7710/72 Divided out of 1319381 Headings B1C B1X and B2P Apparatus for centrifuging a mixture of liquid sample and reagent in containers 38, and then decanting the supernatant liquid from all the containers simultaneously comprises (Fig. 1) turntable 10 rotatable by means 20, carriers 30 pivotably mounted about the periphery of the turntable and arranged to receive the container 38, and magnetic means 32, (on the containers) 33, 105 (on the turntable), (Fig. 2) operable to tilt each of the carriers to bring the lower ends of the containers radially inwards of their upper ends. With turntable 10 at rest, the carriers 30 are maintained vertical (position in N in Fig. 2) by springs 90, 91. During centrifugation, carriers 30 swing out to position C. For the decant step, coils 105 are energized, and magnetic insert 32 on each carrier is drawn inwards to pole ring 33 (position A). On rotation of table 10 the liquid is flung out of the containers and collects in bowl 40. For agitation of the contents of the containers, alternate actuation and deactuation of coils 105 causes pivoting of the carriers between positions A and B.
Patent GB-1385657-A (GB)
Title: Pressure converter
IPC: G01L7/16
Filed: 1973-02-19
Abstract: 1385657 Pressure intensifiers ASSA AB 19 Feb 1973 [29 Feb 1972] 7953/72 Heading F1D In a pressure intensifier, Fig. 1 having pistons 6, 7 moving in cylinders 2, 8, the inner cylinder 8 is tiltable relative to the cylinder 2 to permit misalignment of the cylinders. The cylinder 8 is mounted by a part-spherical spigot 10 on and endwall 3 through which a duct 25 passes to an outlet 26. A part-spherical portion 16 of the cylinder bears on the inside of the cylinder 2 and is retained by a member 17. A helical spring bears on the piston 6 to urge it to the left. Alternatively the piston may be spring-urged to the right, or doubleacting. A passage 22 vents the chamber 19. Ducts 21 connect chambers 19 and 20 Fig. 2 (not shown), illustrates an embodiment in which the portion 16 of the cylinder 8 does not touch the wall 2 of the outer cylinder, spigot 10 is separate from the end-wall 3, and the passage 22 is replaced by a passage in the end-wall 3.
Patent GB-671378-A (GB)
Title: Improvements in or relating to bobbins, reels, spools and the like
IPC: B65H75/14
Filed: 1949-03-23
Abstract: 671,378. Bobbins. WHEATLEY, R. H., and AUSTEN, Ltd., C. March 22, 1950 [March 23, 1949; June 2,1949; June 15, 1949], Nos. 7965/49, 14862/49 and 15999/49. Class 120(iii) A hollow bobbin comprises a tubular barrel with end flanges and is constructed in two parts 24 and 25 each consisting of a plastic moulding and each comprising a cylindrical portion 26, 27 respectively, with an end flange 28, 29 respectively, integral therewith, each end flange having a centrally disposed aperture of diameter less than the internal diameter of the barrel to provide a bearing surface for co-operation with a supporting spindle, the two parts 24 and 25 being secured together coaxially by a spigot and socket joint 31 formed by reducing the diameter of the end of one cylindrical portion and internally recessing the end of the other cylindrical portion. As shown the central apertures are formed in tapered bush portions 33, 34 formed integrally with and extending within the respective cylindrical portions. The plastic moulding material may be synthetic resin reinforced with fabric and the spigoted surfaces may be secured together by an adhesive and may be further secured by pins 32 which may be of cat-gut. Alternatively the spigot joint may be made by " skrinking " one portion on to the other. Holes 35 may be formed in the tubular barrel portion for the processing of yarn wound on the bobbin and a portion of the bobbin may be made of a sufficiently soft material to permit "nicking " to hold the end of the yarn. Other embodiments show a thread reel type. and a driven type of bobbin.
Patent GB-363246-A (GB)
Title: Improvements in and relating to timing-control arrangements for the sub-operations cash registers and calculating machines
IPC: G06C7/10
Filed: 1931-03-16
Abstract: 363,246. Toothed gearing. KRUPP AKT.-GES., F., Essen, Germany. March 16, 1931, No. 7999. Convention date, April 26, 1930. [Class 80 (i).] The differential actuating-mechanism of a cash register is operated by a shaft 39 driven to and fro by gearing from the main shaft 19. The gearing consists of mutilated pinions and co-operating locking discs 20, 21, 23, 26, 27, &c., arranged to drive the shaft 39 alternately indirectly through pinion 31 and directly through pinion 34 so that the shaft is rocked through 180‹ in each direction with an interval corresponding with the separation of the groups of teeth 20a, 20b.
Patent GB-350539-A (GB)
Filed: 1930-03-12
Abstract: Primary aliphatic amines are separated from secondary and/or tertiary aliphatic amines by treating the mixtures with an aromatic aldehyde of comparatively high boiling-point such as benzaldehyde so as to form a benzylidene compound with the primary amine, distilling off the secondary or tertiary base which has not taken part in the reaction, decomposing the residual compound by heating it with a mineral acid, and separating in known manner the mixture of aldehyde and primary amine thus produced.  According to examples (1) a mixture of monoethylamine and diethylamine containing hydrocarbons is separated by adding benzaldehyde to form benzylidene-ethylamine, distilling off the diethylamine and hydrocarbons, decomposing the benzylidene compound with sulphuric acid while passing steam through the liquid, recovering benzaldehyde in the distillate, running the residual liquid into excess of alkali, and distilling off the ethylamine which is liberated.  Methylamine may be similarly separated from dimethylamine, or primary butylamine from secondary butylamine.  (2) A mixture of ethylamine and diethylamine is separated by forming the addition compound with p-toluylaldehyde or (3) with b -naphthaldehyde and (4) ethylamine is separated from triethylamine by adding benzaldehyde, distilling off the tertiary base, acidifying the residue with hydrochloric acid, distilling the liberated benzaldehyde in steam, and recovering ethylamine by adding alkali to the residue of hydrochloride.
Patent GB-329738-A (GB)
Title: Improvements in and relating to automatic extinguishing devices
IPC: A62C35/60
Filed: 1929-03-12
Abstract: 329,738. Hart, C. J. March 12, 1929. Sprinklers, automatic; fires, extinguishing and preventing in connection with receptacles for inflammable fluids; inflammable fluids, cutting- off in case of fire.-In automatic means for extinguishing and preventing fire in internal-combustion engines, the collapse of a fusible link brings into operation a mechanical suction device for drawing off the petrol from the carburettor. In addition, a valve may be operated for shutting off the petrol supply, and an extinguisher may be brought into operation. As shown, a spring plunger-pump 2 is connected by a pipe 15 to the carburettor 1. When a fusible link 10, arranged near the air intake 13, collapses, a locking device 8, 8<a> for the pump is released, and the latter evacuates the carburettor. Collapse of tne link also releases a lock 9, 9<a> for a spring-operated valve 5 in the petrol supply-pipe 16. Where collapse of the link also releases actuating mechanism for an extinguisher, the latter is preferably of the type in which a spring piston discharges an extinguishing medium into the carburettor.
Patent GB-342580-A (GB)
Title: Improvements in vacuum cleaners
IPC: A47L5/36
Filed: 1930-03-13
Abstract: 342,580. Vacuum cleaners. ELEKTRISKA AKTIEBOLAGET VOLTA, 29, Kungsgatan, Stockholm. March 13, 1930, No. 8150. Convention date, March 19, 1929. [Class 8 (i).] In a vacuum cleaner of the horizontal type having a motor unit comprising a fan and driving motor mounted within a casing, the motor unit is supported in a freely movable manner within the casing by two horizontally arranged metal compression springs bearing against the casing or a member rigidly connected therewith. In the form shown in Fig. 1, the fan 12 is surrounded by a hood 19 which is secured to the motor housing 13 by ribs 20 and has an annular abutment 22 for one end of the compression spring 23, the other end of which abuts on an annular flange 18 rigidly secured to the casing 10 of the cleaner. The second compression spring 33 is held between the other end of the motor housing and an insulating block 34 in the end cap 14 of the cleaner. The hood 19 has a central air admission hole 24 covered by a perforated plate 25 to. prevent accidental contact with the fan when the bag 11 is removed, and a packing 26 of felt, rubber or the like is placed between the hood 19 and the casing 10. Fig. 2 shows a form in which the casing 10 is divided into suction and pressure chambers by a wall 27 perforated at 28 and forming one abutment for the spring 30, the other abutment of which is a flange 31 around the opening 24 in the hood 19. The spring 30 is surrounded by a packing sleeve 32 preferably of rubber, which engages the first and last turns of the spring, annular plates of metal, or other rigid material optionally being interposed between the end turns and the sleeve to ensure uniform contact of the sleeve with the supports 29, 19.
Patent GB-777808-A (GB)
Title: Improvements in or relating to television receivers
Inventor: COPE JOHN EDWARD
IPC: H04N5/21
Filed: 1954-01-15
Abstract: 777,808. Automatic gain control. PYE. Ltd. Jan. 15, 1954, No. 8150/56. Divided out of 777,801. Addition to 777,805. Drawings to Specification. Class 40(5) The subject-matter of this Specification is included in that described in Specification 777,801, but the claims differ. Specifications 741,572, 777,804 and 777,806 also are referred to.