baber/WOPTO huggingface dataset:
Patent GB-1394043-A (GB)
Title: Method of preparation and packaging of injectable nitrofurantoin sodium
IPC: A61K31/415
Filed: 1973-06-15
Abstract: 1394043 Injectable nitrofurantoin preparations SAVAGE LABORATORIES Inc 15 June 1973 [20 June 1972] 28581/73 Heading A5B An injectable solution of nitrofurantoin sodium is prepared by extemporaneously admixing a parenterally acceptable, aqueous suspension of finely divided nitrofurantoin with a parenterally acceptable aqueous solution of NaOH or Na 2 CO 3  under sterile conditions. The preparations may comprise other conventional ingredients e.g. glycerine or propylene glycol, benzyl alcohol and sodiumchloride.
Patent GB-1529388-A (GB)
Title: Apparatus for transmitting signals between a missile and a missile control station
IPC: F41G7/30
Filed: 1976-07-09
Abstract: 1529388 Optical direction finding PRECITRONIC GES FUR FEINMECHANIK UND ELECTRONIC mbH 9 July 1976 [28 July 1975] 28626/76 Heading H4D [Also in Division G1] In a missile communication system (see Division Gl) wherein part of a broad CO 2  laser beam 12 modulated with control .information is retroreflected 16 by a missile 14 and further modulated 49, 50 with feedback and target information, the retro-reflected portion 20 is received at the ground station by angle-sensing means comprising a pair of critical angle prism discriminators 22, 22<SP>1</SP> (which may be combined in a single pyramidal prism) provided with detectors 24, 26, 24<SP>1</SP>, 26' which sense angular deviations of the radiation 20 from the main laser beam axis 13 and command a differential-amplifier and drive system 28-32 to redirect the axis 13 in line with the received radiation 20.
Patent GB-1045524-A (GB)
Title: A circuit for maintaining current flow in a current operated device
IPC: B65H54/28
Filed: 1964-03-31
Abstract: 1,045,524. Transistor switching circuits. MONSANTO CO. March 31, 1964 [April 15, 1963], No. 28642/65. Divided out of 1,045,523. Heading H3T A current pulse is generated in an inductive load by connecting the load in series with a capacitor shunted by a semi-conductor controlled rectifier so that when the rectifier is " fired it momentarily conducts while the capacitor is discharged, the load being energized by the recharging current of the capacitor. When power is applied to the circuit shown by operating switch 108 a unijunction oscillator 126 provides firing pulses for an S.C.R. 138. Each pulse renders the S.C.R. momentarily conductive to operate relay 144 and to discharge a capacitor 152 which thereafter recharges. The recharging current maintains the relay operated for a predetermined period. Contact 156 accordingly switches back and forth applying earth and a positive potential alternately to a capacitor 162 which, with resistor 164, forms a differentiating circuit so that positive and negative pulses are applied alternately to a stepping motor 102.
Patent GB-1395794-A (GB)
Title: Single handle mixing valves
IPC: F16K11/078
Filed: 1972-06-19
Abstract: 1395794 Valves MASCO CORP 19 June 1972 [25 Aug 1971] 28668/72 Heading F2V A water mixer valve, comprises water inlet passages 18, 20 which open into resilient seals 24 biased by springs 26, a water outlet passage 50, and a valve member 42 which is slidable in two mutually orthogonal directions for proportioning the water flows and for controlling the total volume flow. The valve member has two passages 52, 54 which are movable relative to the inlet passages 18, 20 and has a frontal edge portion 56 which is movable relative to the outlet 50. Movement of the valve actuator stem 80 in a slot whose plane is perpendicular to the plane of the drawing (see Fig. 4, not shown), causes displacement of the valve member 42 along a line extending between the inlet ports and through the outlet 50. Rotation of the handle causes displacement of the valve member 42 along a line which is perpendicular to the first line and which therefore intersects the axes of the inlet ports. The first movement is transmitted to the valve member by way of an actuator member 62 which has a hemi-spherical base resting in a similarly shaped cavity (64 and 60, Fig. 4, not shown), such rotary movement of actuator 62 being converted to linear movement of the valve member by way of a rounded projection of the valve member engaging a recess 88 of the actuator member. The second movement is transmitted by way of an eccentric cam 82 engaging a recess 84 and so causing lateral displacement of the actuator member 62 and hence of the valve member 42.
Patent GB-263109-A (GB)
Title: Improvements in gaseous electric conduction devices
IPC: H01J3/02
Filed: 1926-11-15
Abstract: 263,109. Raytheon Manufacturing Co., (Assignees of Smith, C. G.). Dec. 21, 1925, [Convention date]. Vacuum tubes.- In a rectifier or other tube, particularly one leaving a hollow cathode which may be hot enough to emit electrons, the space charge is reduced by the photo-ionization, within a confined space adjacent to the active cathode surface, of a readilyionizable gas such as caesium or other alkali or alkaline-earth metal vapour. A photo-ionizing filament F of tungsten may be placed within the cathode C to facilitate unilateral conductivity, reverse currents being suppressed by a monatomic gas, preferably argon, or the like, having an ionizing potential higher than the normal operating potential of the device. This gas, which may be at a pressure of 2-76 cm., also serves to protect the cathode surface from bombardment, and to prevent disintegration of the filament, which is at a very high temperature. The interior of the cathode may be reflecting. It may be coated with caesium or an alloy thereof, or an alkaline-earth metal or oxide, or a mixture of these materials. Caesium may be ionized at a temperature of 1500‹ C., the cathode being preferably maintained at the same temperature. The pressure of the caesium vapour may be 0.0001 mm.; higher pressures may be employed if the discharge tube is heated. Mercury vapouris less suitable than caesium. One end of the filament F may be connected to the cathode C. Short gaps between the parts of the device are unnecessary. More than one anode A may be provided. The opening D of the cathode C may be small enough to cause the discharge to force gas into the cathode. Specifications 230,026, 246,036, 248,721, 248,722, and 263,111 are referred to. Discharge tubes of the kind described may be operated in parallel, with little, if any, series reactance.
Patent GB-1020643-A (GB)
Title: A.c. electric motor
Inventor: WILLIAMS FREDERIC CALLAND
IPC: H02K17/30
Filed: 1963-07-19
Abstract: 1,020,643. Induction motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 19, 1964 [July 19, 1963], No. 28799/63. Heading H2A. In a wound-rotor induction motor, the use of slip-rings is avoided by connecting a resistor R permanently across each rotor coil 8, and S.C.R.'s or thyratrons D 1 , D 2  which may be rendered conducting to short-circuit the resistor when a trigger voltage is generated in windings 9, 10 on an auxiliary rotor. Variable excitation of the auxiliary stator thus acts to control the motor speed. The auxiliary generator produces high-frequency current, e.g. from short-pitched coils as shown in Fig. 2, currentlimiting resistors r and reverse-current-stopping diodes d being connected in series with them. The auxiliary stator may be of high pole number and its field have opposite rotation to the main machine. Full-wave operation of the auxiliary windings 9, 10 may be achieved by using full-wave or polyphase rectifiers at d, and the trigger-pulse may be lengthened by inductance. Two auxiliary machines may be used to provide alternative values of resistance. Speed control may be achieved by tachometric control of the on/off time of the auxiliary stator energization. The machine may operate as a single-phase repulsion motor by limiting the auxiliary stator winding to arcuate sections only.
Patent GB-1020817-A (GB)
Title: A composition of matter for detecting and measuring high-energy radiation
IPC: G01T1/08
Filed: 1962-10-12
Abstract: A luminescent material comprises a support and a silver halide emulsion layer wherein the silver halide layer or a foil in contact therewith contains a compound of the general formula <FORM:1020817/C4-C5/1> in which X is a hydrogen atom or an aryl radical, R1 and R2 each is a hydrogen or halogen atom or an alkyl, alkoxy, aryl, aralkyl, aryloxy, carboxyl, carboxylic acid ester or nitrile, or carbonamide radical which may be substituted by an alkyl radical having 1 to 4 carbon atoms or by an aryl group.  The material emits U.V. light in the range 250-600 mm  upon exposure to high-energy rays.  The finely ground compound may be suspended in a 5% aqueous gelatine solution which is then mixed with highly sensitive silver bromide emulsion, the mixture being applied to a foil of cellulose acetate having a thickness of 0.1 mm.
Patent GB-617045-A (GB)
Title: Hub with dynamo for bicycles and the like
IPC: B62J6/12
Filed: 1946-09-27
Abstract: 617,045. Electric lighting devices for cycles. MOEN, O. Sept. 27, 1946, No. 28894. Convention date, April 8, 1940. [Classes 136 (i) and 136 (ii)] [Also in Group XXXV] In bicycles provided with a hub dynamo for lighting purposes, the dynamo shaft is located at right angles to the longitudinal axis of the hub. The wheel axle 1, 2 passes through a non-magnetic block 6 carrying two permanent magnets 10 and pole shoes 10<SP>1</SP>. Friction wheels 7, Fig. 2, are mounted on displaceable bearings in the block 6 and contact with the inside of the casing part of the hub sleeve 3 and with the friction head 8 of the dynamo shaft. This shaft is supported by bearings 26, 27 and carries a slip ring 181 which is insulated therefrom. The two ends of the armature winding are connected to the block 6 and to the slip ring 181. The inner end of a contact pin 18 serves as a contact brush. The friction wheels may be brought into or out of contact position by means of a slide mechanism operated by a handle. The brake fitted inside the hub has two brake shoes 23 which are pivoted in slidable brackets 23a and are urged inwardly by springs 23b. The brake is applied by rocking a cam member 17 by means of a lever 22. This lever may be connected by a rod to a frame member which is moved angularly during back pedalling.
Patent GB-483389-A (GB)
Title: An improved manner of manufacture of hockey sticks and the like used in sports and games
IPC: A63B59/12
Filed: 1936-10-24
Abstract: 483,389. Hockey &c. sticks. SHEFFIELD, J. E. Oct. 24, 1936, No. 28959. [Class 132 (ii)] A hockey &c. stick is formed with a wooden blade E and a handle F, glued together on corresponding inclined surfaces Dl, D2. The back of the stick is protected by a hard wood covering G; and the handle F is bound with string.
Patent GB-482459-A (GB)
Title: Improvements relating to electric condensors
IPC: H01G4/28
Filed: 1936-10-24
Abstract: 482,459. Condensers. STEATITMAGNESIA AKT.-GES. Oct. 24, 1936, No. 28979. Convention date, Dec. 12, 1935. [Class 37] A dielectric block is traversed by bores, the inner surface of each being covered with a layer of conductive material. The layers in alternate bores a extend to one end of the block and are there united by a layer of conductor on that end face, the two ends thus serving as terminals.
Patent GB-355988-A (GB)
Title: Improvements in or relating to continuously variable friction gearing
IPC: F16H61/662
Filed: 1930-09-27
Abstract: 355,988. Variablespeed friction gearing. ROBERTSON, J. H., 1, Albemarle Street, Piccadilly, London. Sept. 27, 1930, No. 28988. [Class so (ii).] In variable-speed friction gearing of the type in which a driven number c making face contact with a coned axially-movable disc a is moved transversely automatically to vary the speed, manual means is provided for limiting the range of automatic action. The driving-disc a, Fig. 1, moved axially by a governor as described in Specification 306,752, [Class 80 (ii), Gearing, Variable-speed &c.] causes the driven member to swing eccentrically from low-speed position c through a middle-speed position c<2> to the direct-drive position c<1>. According to this invention, the member c, Fig. 2, can be moved manually along the cone a to middle-speed position c<4>, or all the way to direct-drive position c<3>. At position c<4> the automatic action has been limited to the range between positions c<4> and c<5>, and the cone a disengages the drive at c<4> on slowing down. At position c<3> the cone a either drives directly or disengages, as when the engine on a vehicle runs idly. The member c swings on an arm e, Fig. 3, and on sleeve e<1> about fixed axle f, a thrust bearing h not interfering with the swinging. Bearing h is supported by a key h<1> on a plunger h<2> connected by link h<3> and lever i, Fig. 4, to shaft j secured to control lever k, by which means the axial position of member c is manually controlled. The member c is biased towards its lowest position of Fig. 2 by a claim m passing over a guide m<1>, Fig. 4, to a lever l loose on shaft j and pulled by gear-control spring o. Lever k, when moved to the left, limits the extension of spring o, and therefore the range of automatic action by bringing an adjustable screw p on an arm p<2> against the lever l. In the position A of lever k, the full automatic action is allowed. In the position B, the direct drive only is possible. At intermediate' positions, a limited automatic action is possible corresponding to the fine swing of lever l between positions c<4>, c<5> of Fig 2. This variable-speed gear may be used in series with a conventional change-speed gear on a vehicle, the movements of lever k beyond position A to the right of Fig. 4 controlling the latter gearing while the full automatic range of the friction gear is in operation.
Patent GB-503187-A (GB)
Title: A new or improved method of manufacturing ball races
IPC: B21K1/04
Filed: 1938-10-07
Abstract: 503,187. Making ball races. RADNALL, E. A. Oct. 7, 1938, No. 29052. [Class 83 (ii)] A method of making ball races comprising helically coiling a length of wire or strip, cutting the coil longitudinally to sever the individual coils, and pressing the coils to bring their ends 10 into register and to change their cross sectional shape so as to produce an annular groove 11 in one side. The ends 10 are preferably welded together before the groove 11 is formed.
Patent GB-279910-A (GB)
Title: Improvements in and relating to metal vapour rectifiers
IPC: H01J13/18
Filed: 1927-11-01
Abstract: 279,910. Akt.-Ges. Brown, Boveri, et Cie. Nov. 1, 1926, [Convention date]. Low-pressure metallicvapour apparatus.-Circularly arranged anodes of metal-vapour rectifiers are each provided with a separate cooling device outside the rectifier casing and above the anodesecuring plate, each cooling device being wedgeshaped in cross-section perpendicular to the anode axis. The wedge may have a rounded or truncated apex and rounded corners. The cooling devices c for a single circle of anode a may point towards the centre m and have their straight vertical sides c' parallel and close together, good circulation of the surrounding air by upward currents in the gaps between the sides c<1> and rapid transference of heat away from the cooling devices to the air being ensured. The cooling devices are cooled by water circulation and the anodes are arranged on the cover b of the rectifier. In a modification, the anodes are arranged in two concentric circular rows and the apices of the cooling devices are directed outwardly in the inner row and inwardly in the outer row. Each row contains the same number of anodes and the anodes in one row are offset relatively to those in the other row so that the apices of the cooling devices for one row project between the anodes of the other row. Alternatively, the apices in both rows may be directed inwardly.
Patent GB-1005796-A (GB)
Title: Vinyl polymers
IPC: C08F214/06
Filed: 1963-07-23
Abstract: Interpolymers are made by polymerizing 45-98 weight per cent of vinyl chloride, 1 to 45 weight per cent of a vinyl ester of a normal fatty acid of 12 to 22 carbon atoms and 1 to 54 weight per cent of an alkyl or hydroxyalkyl ester of acrylic acid, preferably an ester in which the alkyl group contains 2 to 8 carbon atoms.  Specified vinyl esters are esters of stearic, palmitic, arachidic, behenic, lauric and myristic acids. Specified acrylates are alkyl acrylates containing 1 to 10 carbon atoms in the alkyl group, lauryl acrylate, and hydroxy and dihydroxy alkyl acrylates of which the alkyl groups may be further substituted, e.g. by chlorine or methoxy groups. Polymerization may be effected in aqueous suspension or emulsion in the presence of catalysts, e.g. hydrogen and lauroyl peroxides, cumene hydroperoxide and persalts, or actinic light, and emulsifying and suspending agents, e.g. sodium oleate, sodium lauryl sulphate, sodium isopropyl naphthalene sulphonate, gelatine, polyvinyl alcohol, cellulose derivatives and lecithin. An example describes the copolymerization of vinyl chloride, vinyl stearate and n-butyl acrylate in aqueous suspension in the presence of lauroyl peroxide and methyl cellulose.  The copolymers may be used in the manufacture of packaging films and latex paints.
Patent GB-225877-A (GB)
Title: Improved means for connecting together aluminium and copper conductors
IPC: H01R4/62
Filed: 1924-12-06
Abstract: 225,877. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Dec. 6, 1923, [Convention date]. Couplings. - A conductor comprises an aluminium member a bored at a<1> and recessed at e, e<1> and a copper member b which may be shouldered at b<1> and recessed at c. The member b is forced into the bore a' of the member a and secured as shown. The recesses e, e<1> are then filled with an insulating mass to prevent electrolytic action. Securing lugs g, d may be provided on the respective members.
Patent GB-844058-A (GB)
Title: Improvements relating to gas sampling apparatus
Inventor: PETTINGER DONALD STANLEY
IPC: F16K11/074
Filed: 1956-09-26
Abstract: 844,058. Monitoring nuclear reactor coolants. A.E.I.-J. THOMPSON NUCLEAR ENERGY CO. Ltd. Sept. 12, 1957 [Sept. 26, 1956], No. 29396/56. Class 39(4). [Also in Group XXIX] A gas selector valve for sampling the gas from the core channels of gas cooled nuclear reactors, comprises a cylindrical valve body 1, Fig. 2, having sets of parallel ducts 8 arranged on concentric circles with each set on a common radius. The ducts connect lines 3 from the various core channels and open through ports 9 on to an annular face 10 within the body which co-operates with the face of a selector arm 7, Fig. 4, having sets of radially disposed ports 11, 16 co-operable with adjacent sets of ports 9. The ports 11 are connected through a common duct 13, an axial duct 14 and a line 15 with sampling apparatus and the ports 16 through a common duct 17, annular spaces 19, 21 surrounding the duct 14 and a line 23 with scavenging apparatus. On rotation of the arm 7, which is ball-bearingly mounted, step-by-step by an electric motor, each set of ports 9 is first placed in communication with the scavenging apparatus prior to being connected to the sampling apparatus, the lines 3 being thus sampled four at a time. To enable individual lines to be sampled, a valve 24 extends across each set of duct 8, alternative valves being staggered vertically to save space. Each valve 24 comprises an elbow passage 29 and diametral ports 28, four of which are normally in alignment with the ducts 8. On removal of a cover 25 and rotation of the valve a screw-threaded shank 26 and nut 27 moves the valve radially outwardly so that any of the four ducts may be connected by the elbow passage 29 to a radial passage 30, Fig. 6, and thence through a peripheral duct 31 surrounding the valve body and a duct 33 with individual sampling apparatus.
Patent GB-464788-A (GB)
Title: Improvements in or relating to modulated carrier wave transmitters and apparatus for use therewith
IPC: G01R29/06
Filed: 1935-10-24
Abstract: 464,788. Wireless transmitting systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and TRINGHAM, W. S. L. Oct. 24, 1935, No. 29405. Addition to 428,700. [Class 40 (v)] In a modulation monitoring-installation for radio and like transmitters of the kind d in which a cathode-ray tube is switched in turn to various stages of the transmitter, an amplifier is provided between the switch and the cathode-ray tube, and the modulated carrier wave is rectified by a rectifier situated adjacent the switch. In the circuit shown, the switch S comprises two perpendicular rotary arms A1, A2 movable into three positions over the twelve contacts. According to the position of the switch arms, voltages are received from three different stages of the transmitter and are applied across the grid and cathode of an amplifier V, the plate circuit of which is coupled to the cathoderay indicator. Voltages from the pre-modulation stage may be taken from a tapping on the anode resistance AR of that stage and fed to the switch contacts through a high-frequency cable C. Similarly, voltages from the modulator stage are fed through a cable C1. The modulated carrier stage is connected by a cable C2 to a flatly-tuned circuit K2, L2, connected in the circuit of a diode rectifier V1, the load resistance R1 of which is connected to the switch contacts. In a modification, the modulated carrier is taken from the aerial feeder by bridging that feeder at a point about one-eighth of a wave-length from its input end by a small condenser in series with a low resistance from across which the carrier voltage is taken to the rectifier V1. This latter arrangement may also be used for feeding a local monitoring television reproducer. The rotary switch may be replaced by cam-operated switch arms, Figs. 2 and 3 (not shown). The apparatus enclosed in the dotted line is situated at the monitoring and switching point.
Patent GB-1307239-A (GB)
Title: Plastic rocket propellants
IPC: C06B23/00
Filed: 1970-06-17
Abstract: 1307239 Propellants RAUFOSS AMMUNISJONSFABRIKKER AS 17 June 1970 [19 July 1969] 29433/70 Heading C1D A plastic propellant for rockets comprises a perchlorate, polyisobutylene, a wetting agent, and 15-30% by weight of zinc oxide. The perchlorate may be ammonium perchlorate and the wetting agent lecithin. The zinc oxide acts both as burning catalyst and as filler and oxidizing agent.