baber/WOPTO huggingface dataset:
Patent GB-638823-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03F1/36
Filed: 1946-08-21
Abstract: 638,823. Valve amplifying circuits. O'BRIEN, W. J. Aug. 21, 1946, No. 24984. Convention date, Aug. 27, 1945. [Class 40 (v)] In a variable gain tuned amplifier in which an unbyepassed cathode resistor which is common to the input and output'circuits compensates for variations in the input capacity of the tube with change in gain, the suppressor grid is connected directly to the input and output circuits at the point where both these circuits are connected to the cathode resistor, thus reducing the effect of the plate to cathode capacity of the valve and maintaining constant the phase difference between the input and output voltages. The Figure shows a tuned amplifier stage in which the grid bias is varied by potentiometer 22 and negative feedback is obtained from the cathode resistor 26, the suppressor grid being connected to earth via conductor 27. In a modification, Fig. 2 (not shown), the cathode circuit comprises two resistors in series between cathode and earth, one of which applies the normal bias to the stage and is byepassed at radio frequencies, the suppressor grid being connected to the junction point of the two resistors. The gain of the stage may be controlled by an A.V.C. bias applied to the end of the tuned input circuit which is decoupled to earth at radio frequencies. If the valve has an internal plate or anode shield this is connected directly either to the suppressor grid or to earth.
Patent GB-517156-A (GB)
Title: Improvements relating to pipe coupling devices
IPC: F16L19/12
Filed: 1938-08-25
Abstract: 517,156. Pipe joints. LAMONT, J. H., and LAMONT & CO., Ltd., J. H. Aug. 25, 1938, No. 24994. [Class 99 (i)] In a joint in which a packing ring 9 is compressed around the pipe 6 and in a recess of the socket 10 the pressure is transmitted by a ring comprising a flange 16 and reduced portion 15, the latter being contracted on to the pipe by a conical surface 12 on the coupling nut. The part 15 may have a bevelled edge. In a modification a shoulder 14a, Fig. 5, engages the ring flange 16 and a sleeve 19 having a conical face for contracting the ring screws into the coupling nut.
Patent GB-1504659-A (GB)
Title: Process for producing phthalonitrile
IPC: B01J23/31
Filed: 1976-06-17
Abstract: 1504659 Production of phthalonitriles INST NEFTEKHIM PROTSESSOV IM AKAD JU G MAMEDALIEVA AKAD NAUK AZERBAIDZHAN SSR 17 June 1976 25060/76 Heading C2C A process for producing phthalonitrile comprises reacting o-xylene with ammonia at a temperature within the range of from 350 to 550 C. in the presence of oxygen or a mixture thereof with inert gases and a catalyst, viz. a mixture of oxides of bismuth, antimony, molybdenum and chromium taken in a molar ratio of 1-15 : 1-10 : 0À5-5 : 0À5-20 respectively or a mixture of oxides of bismuth, antimony, molybdenum and vanadium taken in a molar ratio of 1-20 : 1-10 : 0À1-15 : 1- 120 respectively deposited on to a support, followed by isolation of the desired product.
Patent GB-852196-A (GB)
Title: Grab having the shells connected by enclosed slide bars
Inventor: JNR FREDERICK ORREN SNOW
IPC: B66C3/12
Filed: 1958-08-05
Abstract: 852,196. Grabs for handling materials. McKIERNAN-TERRY CORPORATION. Aug. 5, 1958, No. 25086/58. Class 78 (4). The opening movements of the jaws 17 (Fig. 1) of a grab about their hinges 18 on the usual lower block 12 are synchronized by links joining crank pins 22, 23 on the jaws and enclosed in housings which protect the links and crank pins from dirt. In the construction illustrated each link has the form shown in Fig. 7, the arcuate slots 24, 25 serving to permit the passage of the hinge pins 18. Each housing includes an inner plate 26 (Fig. 5) formed with holes 27 (Fig. 8) taking over the hinge pins 18 and with arcuate slots 28, 29 to clear the crank pins 22, 23. Each inner plate is connected by a bridging member 32 (Fig. 5) to an outer plate 30 held on the hinge pins 18 by enlarged heads 14. The hinge pins 18 are located by a bolt 39 and both these and the crank pins are lubricated through passages fed from grease nipples 33, 41. The links 14 shown connecting the jaws 17 to the upper block 10 are connected for synchronous movement by a tooth 19 engaging a recess 20.
Patent GB-1109563-A (GB)
Title: A new antibiotic asperlin and the production thereof
IPC: A23K20/195
Filed: 1965-06-14
Abstract: <PICT:1109563/C2/1> A new antibiotic, asperlin, effective against gram-positive and gram-negative bacteria, is produced by the cultivation of Aspergilus nidulans CM1 94,163, NRRL 3134, in an aqueous nutrient medium containing assimilable carbohydrate and nitrogen sources under submerge aerobic conditions and isolating the asperlin so produced.  The asperlin produced may be isolated by filtering (or centrifuging) the medium and contacting the filtrate with a water-immiscible solvent for asperlin, e.g. ethyl acetate, and recovering asperlin from the solvent extract by evaporating to dryness or by adsorption chromatography on silicic acid, alumina or "Horisil" (Trade Mark) and elution with an organic solvent in which asperlin is soluble. Asperlin is a neutral substance soluble in ethyl acetate, amyl acetate, butyl acetate, 1-butanol, 2-butanol, methyl ethyl ketone, methyl isobutyl ketone, chloroform, methylene chloride, MeOH, EtOH, benzene and toluene and relatively insoluble in water; it has a M.W. of 208 (determined by isothermal distillation in acetonitrile) and contains C, 57.10%; H, 6.03%; O, 36.20%, giving an approximate formula C10H12O5; it shows no absorption maxima in the U.V. range, has an optical rotation of <FORM:1109563/C2/1> + 345 degrees (c, 0.9, 95% ethanol) and has the I.R. spectra in mineral oil as shown in Fig. 1.  The antibiotic asperlin may be used alone or in combination with other antibacterial agents (unspecified) to prevent the growth and reduce the number of micro-organisms present in mammals, birds, fish, reptiles, plants and humans.  Asperlin may also be used as a feed supplement to promote the growth of animals, e.g. mammals, birds, fish and reptiles.ALSO:The new antibiotic asperlin (see Division C2), effective against gram-positive and gram-negative bacteria, may be used as a disinfectant on dental and medical equipment and food utensils. Asperlin may also be used in preventing microorganism growth on plants.
Patent GB-1472733-A (GB)
Title: Thermocouple
IPC: G01K7/10
Filed: 1975-06-12
Abstract: 1472733 Thermocouples NISSAN MOTOR CO Ltd 12 June 1975 [25 June 1974] 25192/75 Heading H1K A thermocouple comprises a sealed metal tube 46, an elongate dissimilar metal member 50 within the tube 46 and connected to the inner wall of the closed end of the tube 46, and a cylindrical base member 40 coupled to the other end of the tube 46 and supporting a sleeve 42 which holds compensation wires 44 which are connected to the tube 46 and the elongate member 50 by soldering. The metals of the tube 46 and the member 50 may be a Ni-Cr alloy and a Ni-Al-Mn-Si alloy respectively and they may be isolated by MgO powder 54, and the base member 40 contains alumina cement 56 for fixedly securing the soldered joints. The device may be supported by an insulated bracket 58.
Patent GB-600158-A (GB)
Title: Device for locking on their driving shafts kinematographic film spools
IPC: G03B21/32
Filed: 1945-09-28
Abstract: 600,158. Kinematograph apparatus. DEBRIE, A. L. V. C. Sept. 28, 1945, No. 25285. Convention date, July 30, 1943. [Class 97 (i)] A device for securing a kinematograph spool to its spindle includes key-like members which can be retracted, within the shaft to allow the spool to be placed in position and then be moved radially outwards and axially to retain one of the spool flanges against a stop provided on the spindle. In the form shown, the keylike members are the bent-out portions 8, 8<1> at the ends of a U-shaped spring 7 inserted in the hollow spindle 1. A member 13, with knurled head 17 is screw-threaded into the end of the spindle and as it is screwed in its coned end 15 forces the ends of the spring apart, the portions 8, 8<1> emerging through slots. The annular end face 14 of the screw then forces the spring 7 inwardly against the spring 10 until the portions 9, 9<1> engage the spool 2 and bring its flange against the flange 3 on the spindle. The portion 4 of the spindle is squared. The ends 18, 18<1> of the spring 7 prevent complete withdrawal of the screw 13. In another embodiment, two cams, pivoted together, are contained within the spindle and normally retracted within the spindle, but can be pivoted outwardly and axially by a cone-ended screw as described above.
Patent GB-1384847-A (GB)
Title: Washing machine
IPC: D06F39/08
Filed: 1973-05-29
Abstract: 1384847 Dish washing machines INDUSTRIE A ZANUSSI SpA 29 May 1973 [7 July 1972] 25393/73 Heading A4F [Also in Division D1] A resilient sump for a washing machine is made in one piece with inlet ducts 2 and 4 for circulation and discharge pumps 3 and 5 and a connection 6 for a pressure switch 7. The sump is made of rubber or p.v.c. and is held within an aperture at the bottom of the tub by a retainer ring (9) Fig. 4 (not shown).
Patent GB-926451-A (GB)
Title: Lubricating pump for variable stroke mechanisms
IPC: F04B9/04
Filed: 1961-07-13
Abstract: 926,451. Lubricators &c. MILTON ROY CO. July 13, 1961 [Aug. 2, 1960], No. 25452/61. Class 12 (3). [Also in Groups XXIV and XXVIII] Apparatus for providing force-feed lubrication to the bearings of a positive displacement variable stroke mechanism or pump of swashplate type comprises a crosshead 11 and a crank 25 connected by a link 26 at the opposite ends of which are provided spherical bearings 66 and 70 to provide bearing connections with the crosshead and crank respectively. The crosshead reciprocates in a bearing sleeve 20 located in wall 22a of a housing. The crosshead and sleeve each are formed with two different diameters 11a11b and 20a and 20b respectively and the co-operating surfaces between crosshead and sleeve form a varying annular space C with the movement of the crosshead. The forward movement of the crosshead increases the size of the space C and produces a suction which draws lubricant from the bottom of the housing 22, through check valve 62 into said space and connecting passages 60 and 63. The return stroke of the crosshead decreases the size of the space C and thus forces the lubricant therein past the spring-loaded valve 64 to the spherical bearings 66 and 70, which are connected via an axial passage 26a in the link 26, and also via passage 80 to recessed chamber 81 to lubricate adjacent surfaces between the crank 25 and sub-frame. The bearing lubrication by this means occurs on the non-loaded strokes of the main pump or mechanism cycle thus ensuring the formation of a lubricant film under load conditions. A relief valve 74 controls the lubricant pressure to the bearings. Specification 825,229 is referred to.
Patent GB-415596-A (GB)
Title: Improvements connected with buckles or the like
IPC: A44B11/24
Filed: 1933-09-15
Abstract: 415,596. Buckles. EYLAND & SONS, Ltd., and WEBSTER, J. A., Lower Rushall Street, Walsall. Sept. 15, 1933, No. 25569. [Class 43.] A buckle frame 4 made from sheet metal or wire has semi-circular recesses 7, 8, to receive the ends 9, 10 of one or more chapes or pivoted prongs 11, and projections 5, 6, to be turned over on to these ends to secure the pivoted prong or chape in position.
Patent GB-150734-A (GB)
Title: Improvements in acid chambers, acid towers, acid mains, and similar arrangements
IPC: B01J19/02
Filed: 1920-09-06
Abstract: 150,734. Pfannenschmidt, P. L. Sept. 8, 1919, [Convention date]. Addition to 149,667. Holders; mains.-In the construction of acid chambers, towers, mains and other acid-proof structures as described in the parent case, the sheets of glass, quartz-glass, or the like are made with reinforced or thickened edges, which may be in the form of flanges, and the sheets are arranged so that the edges abut against one another while the supporting framework is outside, and need not therefore be of acid-proof material. As shown, the sheets a have thickened edges a<1> abutting against one another and are supported from a framework d by bolts b arranged at the corners of the plates. The plates are held between lead washers c, and the bolt-head b' which is inside the structure is coated with acid-proof enamel. The clearance spaces between the edges of the plates are filled with putty, or the plates may slightly overlap. Alternatively the plates may have flanges, in which case the connexions of the plates with the supporting framework may lie wholly outside the structure.
Patent GB-1411025-A (GB)
Title: Method for operating a coke oven plant and such a  plant itself
IPC: C10B41/00
Filed: 1973-05-30
Abstract: 1411025 Automatic control of coking HOOGOVENS IJMUIDEN BV 30 May 1973 [30 May 1972] 25636/73 Heading G3N An emptying programme for the chambers of a coke oven plant is devised during the coking- process by data processing means and in the execution of the programme a given chamber is not emptied before the predetermined coking time for the charge has elapsed. As shown, a coke-oven plant, comprises a battery of oven chambers which are fed from a hopper 13. A sensor 20 is mounted on a doorremoving machine 16 and a sensor 21 is mounted on a pushing-machine 15. The sensors are electrically connected to a control 22 to determine mutual-locking. The position of a quenching car 17 is derived by a pulse counter 23 and fed to the control 22. The car is moved slowly when taking coke from an oven chamber and at normal speed to-and-from a quenching tower, not shown. The pushing machine 15 carries a planing rod 25 to level the top surface of a loaded oven and a contact switch 26 signals a computer 27 determining the coking time on the bars of oven and coal characteristics. A display, by telex or video, of the optimum emptying programme is provided for the operating personnel to control the process. Alternatively, the computer directly controls the coking process.
Patent GB-897797-A (GB)
Title: Improvements in or relating to acylthio-steroids
IPC: C07J75/00
Filed: 1960-07-22
Abstract: The invention comprises 5a  - acetylthio - cholestan - 3 one and 5a - acethylthio - 17b  - propionyloxy-androstan-3-one, and the preparation of 5a -acylthio-3-oxo-steroids by treating 3-oxo-D 4-steroids with alkyl thiolic acids, e.g. at room temperature and/or in the presence of an organic peroxide such as benzoyl peroxide.  In the examples the two compounds referred to above are prepared.
Patent GB-327937-A (GB)
Title: Improvements in musical drums
IPC: G10D13/02
Filed: 1929-08-23
Abstract: 327,937. Skura R. Aug. 23, 1929. Drums.-The snares 6 are at one end connected by a tail-piece 7 to a bracket 9 carrying a suspension-ring 10, and at the other to a machine head m whereby the strings may be individually tuned.
Patent GB-884755-A (GB)
Title: Alkyl benzene sulphonate detergent compositions
Inventor: MCLEAN ANDREW
IPC: C11D1/22
Filed: 1959-07-27
Abstract: A detergent composition comprises (a) a major proportion by weight of an alkali metal alkylbenzene sulphonate derived from a propylene polymer alkylated benzene fraction boiling above 230 DEG  C. p  and preferably below 350 DEG  C., and (b) a minor porportion by weight of an alkali metal alkylbenzene sulphonate derived from a propylene polymer alkylated benzene fraction boiling at 160-230 DEG  C.; (b) generally comprises 1-35%, preferably 10-20%, by weight of the composition.  The preparation of the sulphonates is described (see Group IV(b)).ALSO:A composition comprising (a) a major proportion by weight of an alkali metal alkylbenzene sulphonate derived from a propylene polymer alkylated benzene fraction boiling above 230 DEG C., and preferably below 350 DEG C. and (b) a minor proportion by weight of an alkali metal alkylbenzene sulphonate derived from a propylene polymer alkylated benzene fraction boiling at 160 DEG C.-230 DEG C. is produced (1) by mixing the final sulphonates prepared separately, (2) by mixing the sulphonic acids prepared separately and then neutralizing the mixture, or preferably (3) by mixing the alkylated benzene fractions and then sulphonating and neutralizing the mixture.  The alkylated benzene fractions are obtained by condensing propylene polymer fractions boiling above 160 DEG C. with benzene in the presence of a Friedel-Crafts catalyst such as anhydrous hydrofluoric acid and then fractionating the alkylate obtained into the required fractions.  A residue obtained by redistilling the lower boiling fraction may suitably be discarded as containing a concentrate of colour bodies, and the redistilled lower boiling fraction then further refined by treatment with sulphuric acid followed by washing with water and aqueous alkali metal hydroxide before being blended with the higher boiling alkylate fraction prior to sulphonation and neutralization.  The alkylate fractions may be sulphonated with sulphur trioxide, sulphuric acid or oleum, and neutralized with the appropriate alkali.
Patent GB-176817-A (GB)
Title: Improvements in condensing and feed water heating systems in steam power plants
IPC: F22D1/40
Filed: 1920-09-07
Abstract: 176,817. Marks, E. C. R., (Ingersoll- Rand Co.). Sept. 7, 1920. Feed-water, heating.-Condensate from the main condenser 2 is pumped through the condenser 5 of an auxiliary turbine 4, and are-heater 11 heated by steam from a lower stage of the auxiliary turbine to the hot-well 13. Thence it is pumped through an economizer 23 and is further heated in heaters 27, 32 supplied with steam from higherpressure stages of the turbine 4 before delivery to the boilers. Air-extracting devices are employed in the heaters operating below atmospheric pressure.
Patent GB-654741-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B3/00
Filed: 1948-10-01
Abstract: 654,741. Photographic cameras; lens mounts. KODAK, Ltd. Oct. 1, 1948, No. 25690. Convention date, Oct. 2, 1947. [Classes 97 (i) and 98 (i)] A photographic camera comprises a lens mount having a cylindrical bore, the inner periphery of which includes circumferentiallyspaced, axially-extending guide keyways, locking keyways adjacent one or both ends of, but spaced peripherally from the guide keyways, and grooves extending at right angles to the keyways and connecting the outer ends of adjacent guide and locking keyways, a cylindrical lens tube axially movable between a retracted inoperative position and an extended operative position in said bore and having radially projecting keys which engage the guide keyways during such movement and engage the grooves during rotation of the lens tube relatively to the lens mount, when in one or either of its extreme positions, to bring the keys selectively into register with the guide or locking keyways, and spring means for axially dispensing the lens tube to move the keys from the grooves into the keyways with which they register. In the form shown, the camera comprises a lens mount 11 having a cylindrical bore 12 in which a lens tube 13 is movable from an inoperative position shown in Fig. 1 to an operative position. The lens tube 13 has a flange 14 provided with three projecting lugs 15 which slide along guide keyways 16 provided in the inner surface of the mount 11 as the tube 13 is moved between said two positions which are respectively defined by stops in the form of spring washers 19 and 23. When the tube 13 reaches either of said positions, it is partially rotated so that the lugs 15 pass through circumferential grooves 30, Fig. 6, the tube being axially moved at the same time by contact of said lugs with a cam surface 32 formed on one wall of each groove 30. Such axial movement causes compression of the washer 19 or 23 so that when the lugs are brought into register with the locking keyways 29, which extend parallel to the keyways 16, the washer urges the lugs into said keyways 29.
Patent GB-297077-A (GB)
Title: Chucks
IPC: B23B31/175
Filed: 1927-09-30
Abstract: 297,077. Csapayi, M. Sept. 14, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Chucks. - A chuck comprises a flanged part 1 for attachment to a spindle and a body part 2 attached thereto and having axial projections 3 against which a casing 5 is secured by bolts 4. The jaws 18, which are reversable in their carriers 17, are adjusted in radial guides in the casing by bell-crank levers 13, oscillated about pivots 12 on axial projections 11 of the body. Pins 15, 14, respectively engage slots in the jaw-carriers and in projections 10 on a ring 9 secured on its periphery to engage an internal screw thread on a sleeve 6 rotatably mounted between the flange, 1 and a collar on the casing. The sleeve may be provided with a wheel 7 for hand operation or with a friction surface for engagement by a band or shoe brake.
Patent GB-916956-A (GB)
Title: Electric remote control system
IPC: B61L7/06
Filed: 1961-07-18
Abstract: 916,956. Control of A.C. motors. SOC. TECHNIQUE POUR L'INDUSTRIE NOUVELLE S.A. July 18, 1961 [Aug. 15, 1960], No. 25943/61. Class 38 (3). [Also in Group XXX] Two or more three-phase motors I, II, III for railway switch points are automatically operated in sequence after closure of a relay 2 at a control-point, each drive having limit switches which, as one motor completes its run, connect one winding of that motor in series with a winding of the next motor across one pair of the supply lines R, S, T until that next motor starts to run; when the motors are stationary a D.C. supervisory current traverses the limit switches (if they have been operated correctly) and the leads L1 . . . L4 connecting the motors to the control point. As each motor is started, two of its windings Y, Z, are connected in series by limit switch contacts 22 across one pair of lines, e.g. R and T according to the position of reversing relays 3, 4 while the third winding X, in series with one winding of the previously running motor, is connected across another pair, e.g. R and S. For the first motor I an impedance W is placed in series with winding X. Initial movement of each drive changes over limit switch contacts from 11 to 12 to disconnect the previously running motor and re-arrange the windings of its own motor in three-phase star connection. When the final drive has reached the end of its travel its motor current is passed through a device C which then deenergizes relay 2, disconnecting the A.C. supply and restoring the supervisory current from terminals - and +. The supervisory current also passes through device C which operates an indicator (not shown) if this current fails. " Trailing " of the points may cause such failure, or it may result in device C being by-passed, in which case the resulting increase in current is detected by a further device, not shown.
Patent GB-436257-A (GB)
Title: Improvements in means for treating human skin
IPC: A61H33/12
Filed: 1934-09-10
Abstract: <PICT:0436257/III/1> In apparatus for treating the skin by blowing steam from a nozzle upon it, ionization of the steam and formation of ozone is obtained by high-frequency discharges occurring between electrodes situated within the nozzle and having no electrical connection with the patient, the electrodes being either the nozzle and an electrode insulated therefrom or two electrodes insulated from each other and the nozzle.  In the arrangement shown in Fig. 2, a mixture of ionized air and steam is obtained by means of an annular electrode 5 arranged in front of the nozzle 3, the nozzle and funnel shaped screen 4 acting as the other electrode.  Air is drawn through the annular electrode by the steam jet, being previously ionized and ozonized by the discharge between the electrode and the screen, and causes ionization of the steam. Fig. 3 shows an arrangement in which the steam is passed through a discharge occurring between electrodes 7, 7 in the nozzle 3 itself.