baber/WOPTO huggingface dataset:
Patent GB-338658-A (GB)
Title: Improvements in harmonic devices for stringed instruments
IPC: G10F1/18
Filed: 1929-09-26
Abstract: 338,658. Dehn, F. B., (Mills Novelty Co.). Sept. 26, 1929. Keyboard stringed instruments; harmonics, producing. -An electric violin, which may be played from a keyboard, is provided with a harmonic device to enable additional notes to be obtained with the same number of fingering devices. The harmonic device, which may be applied to the E string only, consists of a lever 38 which contacts with the string beyond the fingering devices 18 and is actuated by an electromagnet 44 energized when required by a special key-contact 54 in advance of the energization of the fingering electromagnet 21 and the appropriate bow magnet by the key note-contact 57. The rotary bows 22, and a tremolo device, may be operated as in Specification 329,727.
Patent GB-489691-A (GB)
Title: Improvements in and relating to reciprocating ram pumps
IPC: F04B53/10
Filed: 1936-10-28
Abstract: 489,691. Reciprocating pumps. TOWLER, J. M., and TOWLER, F. H. Oct. 28, 1936, No. 29220. [Class 102 (i)] In order to remove gases and thus increase the volumetric efficiency of a ram pump, the inlet valve g is arranged in the end of the cylinder and has a flat upper surface which is closely approached by the flat end of the plunger b at the end of its stroke. The discharge passage f is in close proximity to the inlet valve and at right-angles thereto. The plunger is driven, with a short stroke, by the outer race of an eccentric formed on the driving shaft. The pump body a is preferably provided with three parallel cylinder bores, tho plungers being operated by eccentrics on a common driving shaft. Specifications 392,992, 411,151, and 423,929 are referred to.
Patent GB-386063-A (GB)
Title: Improvements relating to gas-filled electron discharge tubes
IPC: H01J5/06
Filed: 1931-10-21
Abstract: 386,063. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Oct. 21, 1931, No. 29229. Convention date, Jan. 26. [Class 39 (i).] In an electron-discharge tube, such as a high voltage rectifier, having a filling of mercury or like vapour, a cathode, one or more anodes each located in a separate anode chamber, and one or more condensing chambers interposed between each anode chamber and the cathode chamber, deterioration of the cathode is lessened by the provision of tubes of a smaller cross section than the condensing chamber or chambers to connect the condensing chamber to the chambers containing the electrodes. In one arrangement, Fig. 1, a condensing chamber 7 is connected by tubes 6, 9 of ferrochrome to a cathode chamber 1 at one side and an anode chamber 10 above it respectively. The cathode comprises loosely coiled wire gauze 4 coated internally and externally with a substance providing high electron emission and heated by an external coil. The anode 11 is mounted on a disc 12 of ferro-chrome forming part of the wall of the tube. The condensed mercury collects in the chamber 7 and a tube 8 connects the lower parts of the chambers 1, 7 to maintain the mercury in these chambers at the same level. An inverted U-bend 14 in this tube checks fluctuating movements of the mercury and consequent variations in pressure. Re-entrant portions 13 are provided at the bottom of each chamber to ensure a relatively high level of the mercury even when the total quantity provided is small. Voltage may be applied to the tubes 6, 9 to enable the starting voltage to be reduced. Figs. 2 and 3 show modifications in which the anode chamber 10, the condensing chamber 7 and the cathode chamber 1 are arranged one above another. In the arrangement of Fig. 2, dripping of condensed mercury on to the cathode is prevented by the provision within the tube 6 of downwardly flaring guide tubes or baffles 15, 16. In the arrangement of Fig. 3, condensed mercury is returned from the chamber 7 to the chamber 1 through a tube 17 provided with a bend 14 and the lower end of the tube 6 is provided with a hood 18 which prevents excessive heating of the sealed joint 19. Specification 336,563, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
Patent GB-764617-A (GB)
Title: Improvements in the production of hard waxes
IPC: C07C69/26
Filed: 1954-10-13
Abstract: Hard waxes are produced by esterifying a fatty acid having more than 18 carbon atoms in the molecule or a mixture of such acids with an aliphatic trihydric or polyhydric alcohol in such a proportion that the product has substantially one free hydroxyl group only per molecule and then esterifying one equivalent of the compound containing the hydroxyl group with about half an equivalent of an esterification compound or mixture of esterification compounds having in the molecule two carboxylic groups, acid halide groups, ester groups, isocyanate groups or two different of the said groups which are linked by at least two carbon atoms containing no olefinic double linkage. Esterification includes the reaction between the hydroxyl group and an isocyanate group giving a carbamic acid ester group. Suitable fatty acids are hardened rapeseed oil acid, behenic acid, and acids obtained by oxidation of high molecular weight paraffins, e.g. montanic acids.  Suitable polyhydric alcohols are butanetriol, glycerine, trimethylolpropane, triethylol propane, sorbitol, pentaerythritol, dipentaerythritol, and triethanolamine.  As esterification compounds may be used succinic, adipic, pimelic, sebacic, phthalic and terephthalic acids, and their esters and acid chlorides, hexamethylene di-isocyanate, toluylene di-isocyanate and naphthalene di-isocyanate.  The esterification is effected in the usual manner and may be carried out in vacuo or while using protective gases to prevent oxidation.  The hard wax products are suitable for the production of floor and leather polishes.  In examples: (1) montan wax acids are heated with trimethylolpropane in the presence of sulphuric acid, and the product reacted with toluylene di-isocyanate; (2) hardened rapeseed oil acid is heated with pentaerythritol and the product is esterified with adipic acid; (3) montan wax acids are heated with 1,2,4-butane-triol in the presence of benzene sulphonic acid and the product is reacted with hexamethylene di-isocyanate.  A mixture of carboxylic acids boiling above 350 DEG  C. obtained by oxidation of a paraffin wax may be used instead of montan wax acids.
Patent GB-662413-A (GB)
Title: Improvements in or relating to method of preparing an iodine containing benzoic acidand the product resulting therefrom
IPC: C07C65/40
Filed: 1949-11-17
Abstract: Acids of the formula <FORM:0662413/IV (b)/1> where x is -CH2- or -CO-, are prepared by iodinating the parent hydroxybenzyl-benzoic or hydroxybenzoyl-benzoic acids, especially with iodine monochloride or with an iodine-potassium iodide mixture.  The products may be converted into water-soluble salts by treatment with a base or a basic salt such as a carbonate or bicarbonate.  Sodium, potassium and ammonium salts are specified.  Examples show the formation of the 4-hydroxy-3 : 5-di-iodo- and 2-hydroxy-3 : 5-di-iodo-benzyl- and benzoyl-benzoic acids and conversion into sodium salts.
Patent GB-187991-A (GB)
Title: Improvements in or relating to incandescent electric lamps and other similar apparatus
IPC: H01K3/30
Filed: 1922-10-28
Abstract: 187,991. Vello, L. S. Oct. 29, 1921, [Convention date]. R÷ntgen-ray and .vacuum tubes of the type described in Specification 187,988 are renovated by destroying the ring that connects the cap to the bulb by. means of fusion or solvents, repairing or replacing the defective parts, and reconnecting the cap to the bulb by means of a new glass ring. Specifications 12784/12 and 124,756, [both in Class 39 (ii), Electric lamps, Incandescent], also are referred to.
Patent GB-519270-A (GB)
Title: Improvements in prepayment mechanisms for gas and similar meters
IPC: G07F15/02
Filed: 1938-10-12
Abstract: 519,270. Prepayment mechanism for meters. BALMFORTH, J. 'B., ORMEROD, G. A., and WILSON GAS METERS, Ltd., G. Oct. 12, 1938, No. 29500. [Glass 27] In prepayment meter mechanism which supplies commodity at different tariffs the change in tariff being effected automatically after a predetermined quantity of commodity has been prepaid, the rotatable coin platform or carrier is adapted foroperation by coins of different sizes, the changeover being effected automatically by successive prepayment operations. The coins are inserted through b', a<2>, Figs. 1 and 2, in a price-change plate b and a plate a respectively to coin pocket e' slidably carried by the plate a and depress the pocket against a spring k to cause a tooth a' thereon to engage a measuring-out wheel f. The plate a is connected by pins a<1> and slots d<1>, Fig. 4, providing a slight lost motion to a plate d rotatable by a handle c. After a predetermined number of operations by large coins, a member g<1> is automatically-moved by springs g' to cause an abutment g to slide into the pocket e<1> reducing its depth and enabling the mechanism to be operated to the same extent by coins of smaller size. The member. g' is controlled by an internally toothed ring h rotatable in the coin pocket plate e and having a notch h<1> which, when the change-over takes place, has been turned to allow a tooth g<2> on the member g' to enter it. At each actuation by the large coin, the ring h is depressed to cause its teeth to engage a tooth i<1> on the boss of the handle c. The initial rotation of the handle, owing to the pins a', and slots d<1>, rotates the ring h through one tooth. This occurs at each operation until the notch h' and tooth g<2> register, whereupon the size of the coin pocket is altered. No further rotation of the ring h now takes place since it is locked by the tooth g<2>. The number of large coins required is determined bv the setting of marks on the ring h with respect to an indicating arrow m on the coin pocket plate e. The member g' is connected by a link o to a crank pin p on the inner end of a spindle q rotatable in the handle c. The outer end of the spindle carries an arm r having a coloured spot at its free end which shows through one' or other of two openings s, s<1> to indicate to the consumer which size of coin should be used.
Patent GB-1100555-A (GB)
Title: Improvements in or relating to nuclear reactor core components
Inventor: EVANS PAUL BERNARD FRANCIS
IPC: G21C17/10
Filed: 1964-07-20
Abstract: 1,100,555. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 14 July, 1965 [20 July, 1964], No. 29503/64. Heading G6C. A sound generator, operated by fluid flow and mounted within a reactor, provides sound signals indicative of condition changes within the reactor. In one embodiment, a compartment within a fuel element can contain helium gas under pressure. The development of a leak in the can permits a flow of helium through a whistle orifice within the can. Different fuel elements have orifices providing sounds of differing pitches. In a further embodiment, gas flow through an orifice occurs following the release of gas by a fusible plug at a predetermined core temperature.
Patent GB-260785-A (GB)
Title: Improvements relating to motor vehicles
IPC: B62D53/02
Filed: 1925-11-24
Abstract: 260,785. Fornaca, G. Nov. 24, 1925. Connecting forecarriages, bogies, and centrallypivoted and radial axles for steering.-In vehicles in which equi-angular turning of the two driven axles is effected by crossed pivoted rods 7, 10, one end of each rod is ball-jointed, so that the frames 1, 4 may oscillate relatively in the vertical plane. Steering is effected by means of worm gearing, a lever 15 pivoted on a cross-piece 3, and ropes 13, 14, forming with the cross-piece 6 a parallelogram. One or two rigid rods may be used in place of the ropes, in which case the arms 7, 10 are replaced by an arm in two parts which may rotate relatively to one another.
Patent GB-321792-A (GB)
Title: Improvements in trawl net rollers
IPC: A01K75/06
Filed: 1928-10-15
Abstract: 321,792. Stephenson, J. E. Oct. 15, 1928. Trawling.gear.-A roller for the ground rope of a trawl net or for use on a linked chain which replaces the usual ground rope as described in Specification 309,967, is provided with a tread member resiliently supported on an inner member. The resilient means may be an inflated tube or a series of springs or a combination of these means. Fig. 1 shows a central cylindrical member 3 with cupped ends 4 to receive the spherical ends 5 of the connecting links 6, 7 which replace the usual ground rope. This construction resembles that described in Specification 309,967. Radial flanges 13 on the members 3 carry studs 14. The outer annular member 15, forming the tread of the roller, has inwardly projecting lugs each having an aperture larger than the studs 14 but surrounding these studs so as to permit relative movement between the inner and outer members. An inflated tube 19 fills the space between these members. Ribs 22 may be formed on the tread.
Patent GB-1382130-A (GB)
Title: Pentylamine derivatives and process for preparing the same
IPC: A61K31/16
Filed: 1972-06-23
Abstract: 1382130 N-acyl-alkylamines LABAZ 19 June 1973 [23 June 1972] 29656/72 Heading C2C Novel N-acyl-alkylamines of the general formula (C 3 H 7 ) 2 CH-CHR-NH-COR 1 , wherein R is a hydrogen atom or methyl group and R 1  is a methyl, dichloromethyl, 2- or 4-trifluoromethyl-phenyl or 4-nitrophenyl group, are prepared by reaction of an alkylamine of the general formula (C 3 H 7 ) 2 CH-CHR-NH 2  and a compound of the general formula R 1 COR 2 , wherein R 2  is a chlorine atom or -OCOR 1  group. 2-n-Propyl-pentylamine is prepared by catalytic hydrogenation of 4-cyanoheptane. 1-Methyl-2-n-propyl-pentylamine is prepared by treatment of methyl 1-n-propyl-butyl ketone with gaseous ammonia in ethanol, followed by catalytic hydrogenation. Pharmaceutical and veterinary compositions having antalgic, tranquillising, mynrelaxant and anticonvulsant activity comprise, as active ingredient an N-acyl-alkylamine of the first general formula above, in association with a pharmaceutical carrier or excipient therefor.
Patent GB-777027-A (GB)
Title: Improvements in or relating to turbine engines
Inventor: BELL FRANCIS ROBERT
IPC: F04D29/68
Filed: 1954-10-14
Abstract: 777,027. Boundary layer control. BLACKBURN & GENERAL AIRCRAFT, Ltd. Oct. 13, 1955 [Oct. 14, 1954], No. 29669/54. Class 4, [Also in Group XXVI] Steam generated in a heat exchanger 8 disposed in the exhaust duct of a combustion turbine engine is fed to the interiors of the blades 11 of the diffuser 3 of the centrifugal compressor 2. The steam issues from slots 12 in the blades at a small angle to the blade surface to energize the boundary layer. A slot may be disposed on each side of the blade, or on one side only, Fig. 3, permitting reversal of the blade curvature. Slots may be provided in the diffuser wall as in Specification 777,026.
Patent GB-799243-A (GB)
Title: Process for the production of alumina of high purity
Inventor: WRIGGE FRIEDRICH WILHELM
IPC: C01F7/47
Filed: 1955-10-18
Abstract: Pure aluminium hydroxide is obtained from sodium aluminate solutions containing suspended impurities such as iron, silicon and titanium oxides by precipitating a portion of aluminium hydroxide (which will contain the impurities), removing the precipitate, and precipitating the remainder of the aluminium as substantially pure hydroxide.  The initial precipitation may be carried out by means of aluminium hydroxide as inoculant (the aluminium hydroxide being added or formed in situ with carbon dioxide) and inoculated mixture agitated or carbon dioxide added thereto, whereby 1-7 per cent of the alumina dissolved as aluminate may be precipitated.  In the second stage, precipitation may be by inoculation and agitation or by the use of carbon dioxide.  The impure aluminium hydroxide obtained in the first stage may be used as inoculant in the first stage of a further process.  This procedure may be repeated until the efficiency decreases, and then the impure alumina is dissolved in sodium hydroxide and pure alumina recovered therefrom conventionally.  An example is given in which the initial inoculant is equivalent to 20-25 per cent of the total precipitatable alumina.
Patent GB-1047945-A (GB)
Title: Improvements in and relating to fastening devices
Inventor: BENNETT ALAN JAMES
IPC: F16L3/04
Filed: 1963-07-27
Abstract: 1,047,945. Cable clips. FIRTH CLEVELAND FASTENINGS Ltd. July 17, 1964 [July 27, 1963], No. 29875/63. Heading H2C. [Also in Division E2] A fastening device comprises a strap 10 having a tubular pin 11 projecting therefrom, the pin having a peripheral dimension which is constant over substantially its entire length and being made of a resilient material which permits the pin to be driven into an aperture in a panel whose area is slightly less than the normal crosssectional area of the pin so that the pin is retained by friction in the aperture at any chosen position. In the construction shown, the pin is at one end of the strap and the device holds a pipe or cable to a support by passing the strap around the pipe or cable passing the pin through an aperture in the other end of the strap and then engaging the pin with the aperture in the support. In another construction in addition to the pin at one end of the strap a similar pin is provided at the other end and a pipe or cable is fixed to a support by the pins engaging spaced apertures with the strap straddling the pipe or cable. In a modification of either form the pin or pins and the strap instead of being integrally formed, as shown, are separate. In this case the strap can have a plurality of apertures to receive the pins.
Patent GB-1085955-A (GB)
Title: Improvements in or relating to magnetic core storage matrices
Inventor: ASHWELL JOHN
IPC: H03K17/62
Filed: 1963-07-27
Abstract: 1,085,955. Magnetic storage matrices; transistor current switching circuits. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. June 16, 1964 [July 27, 1963], No. 29879/63. Headings H3B and H3T. Current to a row or column drive winding of a coincident current matrix, in which each winding is connected between a primary and a secondary transistor selector, is obtained from a transistor connected to the primary selector which current is diverted from a path to a first source of potential to a path through the winding when a third transistor selector connected between a second source of potential and the secondary selector is energized subsequent to the energization of the primary and secondary selectors. In the 64 x 64 matrix of Fig. 1 the core lines are divided into groups of eight and the method of selecting a core line is such that the primary selectors RYP1, WYP1, RXP1, WXP1 &c. are each connected to all the core lines of a particular group while the secondary selectors WYS1, RYS1, WXS1, RXS2 &c. are each connected to corresponding core lines in all the groups. The references in brackets attached to various leads indicate the core lines to which such leads are connected. The primary and secondary selector stages are connected to current defining circuits TXD and to current defining circuits TS as shown in Fig. 2. When no magnetic core lines are being selected all the current defining transistors TXD conduct while all the other selector transistors are cut off. In order to select the core line CL for writing purposes stages WYP1 and WYS1 are actuated but the current through transistors TXP and TXS of these stages do not conduct sufficiently to switch the cores. Subsequent to and during the activation of the primary and secondary selector stages transistor TXT is rendered conductive by application thereto of a pulse from transistor TXA over transformer T1 so that transistors TXS, TXP pass the total collector current of transistor TXD, i.e. halfcurrent pulse required for coincident current core selection. Saturation of the transistors is prevented by diode D4. At the end of the pulse from the secondary winding of T1 transistor TXT is cut off and diode D1 and voltage source V1 again provides collector current for transistor TXD which transistor is protected against back e.m.f.'s by diode D2. After transistor TXT is cut off the transistors TXS and TXP are rendered non-conducting.
Patent GB-365147-A (GB)
Title: Improvements in and relating to gaseous electric discharge devices
IPC: H01J17/06
Filed: 1930-10-07
Abstract: 365,147. Discharge lamps ; current detectors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Foulke, T. E. ; 30, Evelyn Place, Nutley, New Jersey, U.S.A.) Oct. 7, 1930, No. 30013. Convention date, Oct. 7, 1929. [Class 39 (i).] In making gas-filled discharge devices such as very small lamps lighting at low voltages, one electrode at least is coated with a compound of an alkali or alkaline-earth metal, a metal such as magnesium having an affinity for oxygen is mounted near the electrode, and the electrode and magnesium are subjected to ionic bombardment in rarefied rare gas to promote chemical action in order to decompose the compound to oxide and to reduce a small amount of the oxide to metal. The method is a modification of that described in Specification 362,347. The lamp may be used with a series resistance to test whether circuits of varying voltage are energized. Two electrodes 3 of nickel &c. wire are separated by a glass bead 5 or by the seal 7 at the end of a small envelope 1 made from glass tubing. The electrodes are coated by spraying or painting with carbonate or nitrate of barium or strontium or with a mixture of the carbonates, using a vehicle leaving a carbonaceous residue, preferably collodion or a solution of cellulose in ethyl acetate. The envelope 1 is evacuated and heated to remove gases and is then filled with neon containing À1 to 3, preferably À7, per cent of argon, at a pressure of 40-50 mm. Small traces of impurities such as carbon dioxide, hydrogen or air, but not water vapour and hydrocarbons, may be present ; 1-'1 per cent of oxygen or nitrogen will reduce subsequent blackening of the bulb. To activate the electrode by decomposing and reducing the carbonates, a high-frequency discharge is produced between the electrodes, magnesium 6 secured to a flattened part of one electrode being dispersed on to the lower part of the envelope 1 by the bombardment. The device may be aged by applying alternating current.
Patent GB-1035505-A (GB)
Title: Improvements relating to electric circuits
Inventor: BARNETT CHRISTOPHER FRANK
IPC: H03K17/30
Filed: 1963-07-30
Abstract: 1,035,505. Transistor circuits. ELLIOT BROS. (LONDON) Ltd. July 24, 1964 [July 30, 1963], No. 30117/63. Heading H3T. A circuit more particularly for indicating whether a D.C. voltage V1 lies within a given range comprising two semi-conductor controlled current devices such as transistors VT1 and VT2 having an output circuit electrode connected in common to a point A at which the potential is dependent on the sum of the currents through the devices, an A.C. signal fed to one control electrode, whereby an A.C. output signal is available at an output of the other device if the voltage V1 lies within a range between which neither VT1 nor VT2 is cut off.