baber/WOPTO huggingface dataset:
Patent GB-153418-A (GB)
Title: Improvements in or relating to kick-starters for motor cycles or other internal combustion engines
IPC: F02N3/04
Filed: 1919-09-09
Abstract: 153,418. Woodman, A. C. Sept. 9, 1919. Turning - gear. - A kick-starter for motorcycles &c., in which the parts are normally disengaged, comprises an idler pinion C hung on links E from the toothed segment F on the pedal K and adapted to engage a pinion B of the change-speed gear. The links E are held by a spring P against a stop H on the segment F, and the pedal K is held in the position shown by a stronger spring N. The depression of the pedal brings the pinions C, B into mesh and rotates them, and when the engine starts the pinion C is rolled back on the segment F.
Patent GB-532886-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J9/22
Filed: 1939-07-31
Abstract: 532,886. Discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 31, 1939, No. 22160. Convention date, July 30, 1938. [Class 39 (i)] A fluorescent layer 9 is deposited on the end of a cathoderay or other electric discharge envelope from suspension in a liquid 10, and the liquid is subsequently decanted through a tube 3 sealed into the side of the envelope. Specification 456,755 is referred to.
Patent GB-180974-A (GB)
Title: Improvements in or relating to the mounting or supporting of telephone instruments
IPC: H04M1/04
Filed: 1921-08-22
Abstract: 180,974. Bantow, B. W. A. O., Roeper, J. P. de, and Mulder, A. June 1, 1921, [Convention date]. Addition to 173,474, [Class 52 (v), Window, stair, and like furniture, &c.]. Void [Published under Sect. 91 of the Act]. Joints or linkwork. - A universal joint, for mounting the adjustable holder for telephone instruments described in the parent Specification, consists of a ring 1 rotatably mounted within an elastic ring 2 which in turn is mounted in the holder 6 and is rotatable about an axle 7. The ring 1, which carries the tube 12 for the instrument, may be in halves connected by pieces 4. A spring 9 clamps the rings 1, 2 through the intermediary of a sleeve 8 fitting into a recess in the ring 2.
Patent GB-690676-A (GB)
Title: Improvements in or relating to thermally controlled valves
IPC: G05D23/12
Filed: 1951-09-24
Abstract: 690,676. Thermally-actuated valves. WEST, C. A. Sept. 24, 1951, No. 22250/51. Class 135 A thermally actuated valve comprises a bulb B subject to the varying temperature and connected by a capillary tube to the space between a bellows 51 and a surrounding cup 50 which carries a hollow stem 4 and is loaded by a spring 7, and the stem, at its lower end, abuts against a stem 19 upstanding from a horizontal bar 23 connected by links 24, 24a to two levers 25, 28, each fulcrummed at its outer end 26 in the framing of the device and pivoted at its inner end on a stub shaft projecting from the actuating stem 16 of the valve 14. The fulcra 26 consists of rollers carried on the ends of levers 25, 28 and positioned in slots in the framing. The loading force exerted by spring 7 can be adjusted by means of a nut 9 which screws on a hollow stem 5 upstanding from a fixed partition 12. Stem 16 slides inside stem 19, and a nut 22 carried on the upper end of this stem is pressed by a spring 22a into engagement with a collar 20 screwed inside the lower end of stem 4.
Patent GB-1147189-A (GB)
Title: Improvements in or relating to electrical measuring apparatus and to standard resistances for use therewith
IPC: G01R27/02
Filed: 1965-05-26
Abstract: 1,147,189. Resistance measurement; electrophysical measurement. WAYNE KERR LABORATORIES Ltd., and J. MILDWATER. May 24, 1965 [May 26, 1965], No.22425/65. Headings G1N and G1U. An arrangement for providing a perfect short circuit in a part of a circuit providing a continuous current path incorporates a high gain amplifier, to the input terminals of which two points at opposite ends of the circuit part are connected via a pair of leads. A second separate pair of leads connects the two output terminals of the amplifier to the opposite ends of the part, at the same or different points as before, the amplifier being arranged to feed current to the second pair of leads to pass in a direction through the circuit part such as to cancel the voltage on the first pair. In a bridge circuit for measuring low resistance, the connection 15-18 between resistors 10 and 11 being compared, which connects to the bridge output indicator 24, must have negligible resistance. A perfect short circuit is established between the points 15, 18 by connecting them to the input leads 31, 32 of the amplifier 30, whose output leads 33, 34 connect to further points 13, 16 associated with the resistors 10, 11, (which are of the four terminal type). The arrangement may be used for short circuiting, when required, a resistor (68) which is part of a bridge used for measuring the conductivity of a liquid conductivity cell (66, Fig. 6, not shown). The cell is of the type having spaced electrodes whose spacing can be altered by a known amount so that two measurements can be made to enable end effects near electrodes to be eliminated. A fixed resistor (67) balances the bridge for one electrode setting, while a resistor (68) having a value corresponding to a standard impedance change produced by altering the electrode spacing is switched in and out as required by a switch (69), a perfect short circuit being established by an amplifier (70) operating as described above. A further amplifier (71) and indicator (73) respond to and show any small differences between the measured conductivity and the switched standard resistance.
Patent GB-1131007-A (GB)
Title: Improvements in or relating to aqueous solutions of oxytetracycline
IPC: A61K31/65
Filed: 1967-05-16
Abstract: 1,131,007. Oxytetracycline. KONINKLIJKE NEDERLANDSCHE GIST-EN SPIRITUSFABRIEK N.V. 16 May, 1967 [31 May, 1966], No. 22620/67. Heading A5B. Stable aqueous solutions of oxytetracycline, suitable for parenteral, peroral and local (e.g. intramammary) administration, are prepared by mixing together in a aqueous medium oxytetracycline either as a salt or base, polyvinylpyrrolidone and a magnesium compound ionizable in the medium to provide magnesium ions and adjusting the pH of the mixture to a value from 8.0 to 9.5. The magnesium compound may be a magnesium salt, e.g. chloride or sulphate, or magnesium oxide. The polyvinyl pyrrolidone may have an average mol. wt. from 10,000 to 60,000 and have a concentration in the final solution from 7.5 to 25% by weight. The solutions may also contain reducing substances such as sodium metabisulphite, sodium sulphite, or sodium formaldehyde sulphoxylate.
Patent GB-664831-A (GB)
Title: Improvements in and relating to optical projection apparatus
Inventor: BRISCOE HUGH VILLIERS
IPC: G03B21/06
Filed: 1948-08-27
Abstract: 664,831. Optical - projection apparatus. GRANT PRODUCTION CO., Ltd., and BYNG, R. C. Aug. 22, 1949 [Aug. 27, 1948], No. 22647/48. Class 97 (i). An episcope comprises a casing, a screen fixed thereto, a lens carrier and an object carrier, the two carriers being independently movable relatively to the screen so that an image of the object, of selected size, may be focused on the screen. In the form shown, the casing 1 has a lid 2 carrying the projection screen 3. The carrier 11 has a projection lens mounted at its centre and is connected to the screen by a flexible bellows. A lighting unit, consisting of lamps in a reflector 13, is detachably secured to this carrier, a sleeve 14 being interposed between the lamps and the lens. The carrier 11 and the object carrier 9 are vertically slidable on guides 7 and are separately adjustable by hand wheels 19. Each hand wheel operates a pulley 22 round which passes a wire cable 23, attached to one of the carriers, and passing also round pulleys 17, 18, its two ends being attached to a counterweight 24. Other cables attached to the carriers may be provided at the other side of the casing and coupled to the first pair by shafts 25. An auxiliary platform may be provided on which an object may be placed and illuminated by the unit 13 detached for the purpose. To produce on the screen an image of the elevation of such an object the platform is placed opposite an opening in the casing wall and light from the object entering therein is reflected by two mirrors successively into the lens. The two mirrors are mounted on a base to form an auxiliary unit to stand on the carrier 9. The auxiliary object platform may be mounted on wheels to be movable to focus the projected image. A foldable hood protects the screen 3 from stray light.
Patent GB-1042814-A (GB)
Title: Hanger for pipes, electric cables, conduits and the like
IPC: F16L3/24
Filed: 1964-06-02
Abstract: 1,042,814. Pipe brackets. A. H. QUICK and R. C. WARNER [trading as WALSALL GAUGE & TOOL CO.]. May 31, 1965 [June 2, 1964; May 19, 1965], Nos. 22660/64 and 21130/65. Heading A4B. A hanger for pipes, cables, conduits or the like comprises a base strip 10 formed with vertically spaced, vertically elongate slots 102 with straight sides, and individual supports 12 having an arcuate supporting portion 121 and a rearwardly directed T-shaped projection selectively engaged in a slot 102 by entering the projection 123 into the slot 102 when orientated at 90 degrees to its operative position in which the projection abuts the rear face of the base 10. As shown the base has a hook 101 for engaging over a fixture 11. Alternatively (Fig. 2, not shown), the base member 10 is apertured 103 and screwed to an upright 11 from which it is spaced by spacers 104 engaged by the securing screws. In another embodiment (Figs. 5 and 6, not shown) the support 12 is provided with an outwardly projecting, apertured tongue 124 and co-operates with a similar inverted member 13 to surround the pipe. The apertured tongues receive the hasp 141 of a padlock 14.
Patent GB-1505543-A (GB)
Title: Benzodiazepine derivatives and a process for the preparation thereof
IPC: A61P25/08
Filed: 1975-05-23
Abstract: 1505543 Benzodiazepines RICHTER GEDEON VEGYOSZETI GYAR RT 23 May 1975 [29 May 1974] 22696/75 Heading C2C Racemic and optically active compounds of the general formula (R 1  = H, halogen, CF 3 , NH 2 , NO 2 ; R 2  = H, alkyl; R 3  = acyl group derived from carbonic acid or a derivative thereof or an optionally substituted aliphatic, alicyclic or aromatic carboxylic acid; R 6  = phenyl, halophenyl; provided that if the compound is racemic, R 2  is C 1-6  alkyl and (a) R 1  is H or halogen, R 3  is not a carbamoyl group having a C 1-6  alkyl, C 2-6  alkenyl, cyclohexyl, phenyl or benzyl substituent, or (b) R 1  is halogen or CF 3 , R 3  is not C 2-7  alkanoyl) are prepared by acylation, optionally followed by introduction of an amino or substituted amino group and/or alkylation. An amino substituent in the acylating agent may be protected during the reaction. The above compounds are tranquillo-sedatives, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1452988-A (GB)
Title: Devices for cutting sheet material
IPC: B23K26/70
Filed: 1974-05-21
Abstract: 1452988 Cutting by laser beam G STUMPF 21 May 1974 [22 May 1973] 22721/74 Heading B4B A device for cutting sheet material, e.g. foil or fabrics, by means of a thermal cutting beam i.e.: a laser beam 10, comprising a plate-like supporting means 7 having holes therethrough and arranged to support the material. The laser beam is generated by means of a gun 8 via an optical system 9 to a first mirror assembly 11 which is mounted on a carriage 2 and deflects the beams to a second mirror assembly 12 on a second carriage 4; the carriage 2 is driven by a motor 6. The supporting means 7 is in the form of a perforated plate, e.g.: of copper or brass which is mounted on supports 15, Fig. 2, adjustably secured to support bars. As shown in Fig. 2, the supports are each fitted with cowls 17 having projections 18 for fitting into respective perforations in the plate. By adjusting the supports, the laser beam can be correctly focused with respect to the material. When cutting a rigid sheet material e.g.: wood, the plate 7 and cowls 17 may be removed and the sheet of wood laid directly on the supports 15. Cutting fumes are extracted from beneath the plate by suction means.
Patent GB-419882-A (GB)
Title: Improvements in automatic control systems for aircraft
IPC: G05D1/08
Filed: 1926-09-15
Abstract: 419,882. Gyroscopic apparatus. WOOD, R. M., and MEREDITH, F. W., Royal Aircraft Establishment, South Farnborough, Hampshire. Sept. 15, 1926. No. 22759. [Class 97 (iii).] An automatic control system for the rudder or steering movements of an aeroplane, which may be applied to an automatic pilot or to a wireless controlled craft, comprises a free gyroscope, controlling the steering movements, which is itself controlled by a magnetic compass. The gyroscope which may also control the pitching movements, has means for precessing its rotor axis in azimuth to alter the course which can be operated upon a change in direction of the earth's magnetic field in relation to the aeroplane to return the latter to its correct compass course. Means may be provided to precess the rotor axis at different rates, the rate being for example increased by a timing device to bring the aeroplane quickly on to its course after launching off the course. A vane 4 on the inner gimbal or pitch ring y of the gyroscope is adapted to cause precession in one or other direction, as described in Specification 365,189, by the selective use of compressed air jets from two nozzles 3, 3<1>. A valve 6 controls these nozzles. The precessional movements operate the controls of a servo-motor effecting corrective steering movements. The compass 15 controls electromagnets 7, 7<1> actuating the valve 6, for instance as described in Specification 419,934. A periodically operated stop 10 may be employed as described therein. In an alternative arrangement, the rotor and pitch ring of the gyroscope are deliberately unbalanced so as to produce a slow precession in azimuth which is overcome to produce precession in an opposed direction by a single nozzle and electromagnetic valve.
Patent GB-1604519-A (GB)
Title: Polysiloxane polymers and contact lens and other biomedical articles formed therefrom
IPC: C08F290/00
Filed: 1978-05-25
Abstract: Polymers or copolymers derived from a polyorganosiloxane monomer bonded terminally to a polymerisable, activated, unsaturated group via a divalent hydrocarbon group are particularly suitable for contact lenses having significantly increased oxygen-transport capacity. The conversion of the polymer compositions into contact lenses is carried out, inter alia, by centrifugal casting.
Patent GB-424545-A (GB)
Title: Improvements in or relating to football, hockey, and like athletic boots
IPC: A43B5/02
Filed: 1934-08-04
Abstract: 424,545. Athletic boots. SHILLCOCK, F. J., Norlands, Trinity Road, Handsworth, Birmingham. Aug. 4, 1934, No. 22784. [Class 17 (ii)] In an athletic boot, the back strap b is provided with one or two eyeleted holes d, through which the laces f which are usually tied around the instep and ankle part of the boot upper may be passed to retain them in position. The backstrap may be provided with side lugs c to accommodate the eyeleted holes, and the backstrap is left unstitched from the boot at this point.
Patent GB-655586-A (GB)
Title: Improvements in or relating to methods of and devices for producing moulded propellent charges for rockets and the like
IPC: C06B21/00
Filed: 1948-08-31
Abstract: 655,586. Filling-machines. BONELL, F. T. B., and JUHLIN, R. Aug. 31, 1948, No. 22978. Convention date, Sept. 24, 1947. '[Class 94(i)] [Also in Group XXI] Moulded propellent charges for rockets are made by mixing and melting the propellent substance, preferably in vacuo, and injecting it, through a restricted opening so 'that at least one thin stream is formed, into one. or more rocket or other cases situated in an exhausted chamber. The propellent is mixed and melted in mixer 1, having heating jacket 3 and cover 4, and which is evacuated by pump 8 through line 10. The mixer 1 is then connected to air at 28 and the propellent flows, restricted to a stream about 1-3 mm thickness by by valve 11, through tube 12 into one or more rocket cases 19 enclosed in container 13, which is evacuated by pump 8 through line 22. The case 19 may be vibrated by vibrator 20 and a perforated disc or spray nozzle may be inserted in tube 12. A storage container, preferably exhausted and with restricted inlet and outlet may be inserted between the mixer and the evacuated chamber, and may be fed from more than one mixer.
Patent GB-144527-A (GB)
Title: Photographic printing frames
IPC: G03B27/02
Filed: 1919-09-18
Abstract: 144,527. Hansen, J. P. Sept. 18, 1919. Contact printing-frames with bordering and vignetting masks.-The pressure back 9, 10, Fig. 1, is hinged to a two-arm angle-plate 6, 7 which is adjustably clamped to the front 1 by bolts 15 extending through enlarged openings 5, Fig. 3, in the front 1. This enables the printing paper to be positioned by the edges of the plate 6, 7 over the desired portion of the negative 4 held in the frame 1. The hinges 8 of the part 9 are set back from the edge of the frame 6, 7 as shown. To print borders black papermasks are positioned and held between the angle-plate 6, 7 and the frame 1. A vignetting mask 18 may be clamped to the part of the frame 1 by spring clips 17.
Patent GB-460014-A (GB)
Title: Improvements in fuel injection pumps for internal combustion engines
IPC: F02M59/48
Filed: 1936-08-21
Abstract: 460,014. Fuel - injection pumps. BOSCH AKT.-GES., R. Aug. 21, 1936, No. 23009. Convention date, Aug. 24, 1935. [Class 102 (i)] In a multi-cylinder fuel inj ection pump, each cylinder sleeve 2 is held in position by a nipple 4 and when the latter is slackened the cylinder sleeve may be adjusted circumferentially by rotating a pin 7 having an eccentric extension 7a engaging a slot 2c. In this manner the output of an individual cylinder is adjusted. The output of the unit is varied by a common control means which rotates the pump pistons. The ends of the pins 7 are marked by slots to indicate the position of the eccentric portion 7a. Specification 401,177 is referred to.
Patent GB-675161-A (GB)
Title: Improvements in or relating to hot-gas reciprocating engines
IPC: F02G1/055
Filed: 1946-08-02
Abstract: 675,161. Hot gas engines. NAAMLOOZE VENNOOTSGHAP PHILIPS' GLOEILAMPEN FABRIEKEN. Aug. 2, 1946 [Aug, 7, 1945], No. 23092/46. Class 7(i) [Also in Group XIII]  In a hot gas engine comprising a heat exchanger provided with a cylindrical wall through which an exchange of heat between two media is required to take place one or each of the media is supplied to the wall through which heat exchange is required to take place by way of a large number of main supply channels extending in the same general direction and after making heat exchanging contact with the wall is carried off by way of a number of main outlet channels extending in the same general direction the supply and outlet channels opening within the heat exchanging area of the wall and the path traversed by the medium between a supply channel and an outlet channel having a maximum length of one third of the height of the heat exchanging part of the wall. As shown, Fig. 1, the heater of a hot gas engine includes an annular member 10 a portion of which is shown in perspective view in Fig. 2. The outer surface of the heater wall is heated by a burner not shown. The working medium displaced by the displacer flows into the annular member passes into channels 12. 14 as showm by the arrows and flows out of channels 13, 15. The gases flow in paths having a length f which is .very small with respect to the height d of the wall 11. In a modification of this arrangement in which manufacture is simplified the annular member is constructed of two concentric portions. In this construction it is stated that ridges may be provided on the inner surface of the hot space cylinder these ridges running around the cylinder in planes at right angles to its axis. In a further modification Fig. 5, numerous projections 31 are arranged on the inner surface of a wall 30 between this surface and a cylindrical shell (not shown). The working medium is forced by the displacer to pass between the wall and the shell and passes through the spaces between the projections. The Specification as open to inspection under Section 91 describes also a hot gas engine, Fig. 1, (Cancelled), in which the heater includes three rows of parallel channels 5,6, 7 through which the working medium of the engine passes .when a displacer is moed towards the cylinder head. The working medium flows along the underside of the head and through an annular space 4 surrounding a shell 2. This subject-matter does not appear in the Specification as accepted.
Patent GB-170154-A (GB)
Title: Improvements in continuous wave telephony and telegraphy
IPC: H04B1/50
Filed: 1920-08-05
Abstract: 170,154. Franklin, C. S. Aug. 5, 1920. Combined transmitting and receiving arrangements; thermionic valves, arrangements and connections of; heterodyne receiving systems; duplex and multiplex signalling.-In a system of wireless telephony &c. in which each station employs only one aerial and can send or receive without using a change-over switch, both stations transmit continuous waves all the time. The two waves are of different Lengths and beat with a supersonic frequency. Coupled to each aerial or transmitting circuit through a rectifier is a circuit tuned to the beat frequency, and signals are heard in this circuit only when one or other of the transmitted waves is being modulated. Duplex and multiplex telegraphy may be effected by modulating with different tones and employing additional tone tuning circuits. In an example, a valve V maintains continuous oscillations, which may be modulated in any known way, in the aerial A. An inductance L, which may form part of a circuit tuned to the transmitted or received wave, is coupled to the transmitter and connected as shown, through a rectifier and a condenser K shunted by a potentiometer, to the circuit CM tuned to the beat frequency, and to which the receiver is connected. In operation the large steady currents induced in the inductance M is reduced by means of the potentiometer. In a modification. a three-electrode rectifier is used with a small condenser, shunted by a high resistance in its grid circuit. The system is particularly suitable for use with very short waves and may be used for high-frequency signalling over line wires.
Patent GB-1175690-A (GB)
Title: Centrifugal Casting Apparatus
IPC: B01D63/02
Filed: 1966-12-13
Abstract: 1,175,690. Casting end walls on articles. E.I. DU PONT DE NEMOURS & CO. 13 Dec., 1966 [22 Dec., 1965], No. 23141/69. Divided out of 1,175,687. Heading B5A. The end walls of the fluid separation unit described in parent Specification 1,175,687 formed by using a centrifugal casting apparatus. The casing 101, Fig. 12, of the fluid separation unit carries end moulds 905a, 905b and a settable material, e.g. an epoxy resin, is fed to the mould inlets 908a, 908b from a feed assembly 917 to the grooves 918 of which casting liquid is supplied from containers 920. The mould support is rotated by a motor 913 through a belt and pulley transmission. The moulds are removed and the resin cut across the line CL, Fig. 10, to open the ends of filaments 112 of the fluid separator. To obviate the need for this cutting, a liquid, e.g. a fluorocarbon oil, which is immiscible with the resin and is more dense, is supplied to the mould cavity so that on removal of the moulds only the ends of the filaments have to be cut open, Fig. 11. The centrifugal casting apparatus may comprise a plurality of pivotally mounted casings 101, Fig. 13, carried by a support and swingable to a horizontal position on rotation of the support. The moulds 905a, 905b being supplied with solidifiable liquid as before.