baber/WOPTO huggingface dataset:
Patent GB-1418773-A (GB)
Title: Frequency deviation monitor
IPC: G01R23/12
Filed: 1973-03-20
Abstract: 1418773 Frequency detectors ABEX CORP 20 March 1973 [24 July 1972] 13451/73 Heading H3A A frequency deviation monitor for measuring the instantaneous deviation of an input signal from a reference frequency comprises: a phase shift circuit 14 coupled to the signal source 11, 12 for producing a signal shifted in phase by an amount, and in a direction, indicative of any deviation from a reference frequency of the input signal; means 15 for deriving from the input signal sampling pulses having a duration much shorter than half a cycle of the input signal and recurring at an integral multiple of the input signal frequency; and a sampling demodulator 16 coupled to the phase shift and sample pulse circuits, for sampling the phase shifted signal to develop an output having an amplitude and polarity representative of the frequency deviation. The output is fed to a meter 19 via a circuit 18 which may be switched to hold the peak positive or negative deviation. Amplitude variations of the input signal are removed by a limiter 12 comprising an amplifier (Al) with a non-linear diode network (26) in its feedback path followed by a tuned amplifier (A2) Fig. 2 (not shown). The phase shifter (also in Fig. 2) comprises a further amplifier (A3) with a tunable bridged-T network (27) in its feedback path and a phase splitter (A4) which produces antiphase outputs (28, 29). The sample pulse generator comprises a tuned amplifier (A5) clipper (Q1, Q2) and differentiator which produces two sampling pulse outputs per cycle (35, 36) phase displaced by 180 degrees, Fig. 3 (not shown). The sampling demodulator (also in Fig. 3) comprises two FET's (Q5, Q6) which receive the phase shifted signals (28, 29) on respective main electrodes, and the sampling signals on respective gates. The sampled signals are integrated by a capacitor (C18) and are applied to the meter (19) via the "hold circuit" which includes a further capacitor (C19). When it is desired to hold a signal, a diode (CR14) is switched into circuit with the capacitor (C19) with a polarity depending on the sense of the signal to be held.
Patent GB-404850-A (GB)
Title: New or improved means for pasteurising materials of a pasty consistency
IPC: A01J27/04
Filed: 1933-05-09
Abstract: 404,850. Pasteurizing pasty materials. RAW PRODUCTS, Ltd., 31, Basinghall Street, London, and DUTTWEILER, B., 5, Rue du Midi, Vevey, Switzerland. May 9, 1933, No. 13495. [Class 49.] Apparatus for pasteurizing and subsequently cooling pasty materials consists of a cylindrical member a jacketted over part of its surface and having a machined inner surface within which fits a rotatable cylindrical body e having a helical rib b providing a shallow helical path for the material which is fed thereto by a screw h in alignment and operative relation with the body e. As shown, the material is supplied through a hopper i to the member a and fed forward by screw h which, with body c, is rotated by a belt &c. drive k. The material is heated by a jacket e to which heating medium is supplied through an inlet e<1> and is subsequently cooled by a jacket f to which cooling medium is supplied through an inlet f<1>. The treated material passes to a hopper l, a scraper being provided, if necessary, to remove the material from the end of body c. The apparatus can readily be dismantled for cleaning. The body c may be interchangeable with others having ribs b of different depths for use in treating materials of different character. In a modificacation, the whole of the jacket may be used for the heating and the material may be cooled separately in a similar apparatus.
Patent GB-135460-A (GB)
IPC: G01P3/16
Abstract: 135,460. Bulle, M. P. Favre-. Nov. 21, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Centrifugal indicators.-In a speed indicator or other measuring instrument, the reading is effected by noting the extent of the circle, which is traced by a member moved outwardly and rotated according to the speed or other variable, and is rendered visible by persistence of vision. The circle is read against a diametrically-placed scale. In the centrifugal speed indicator shown, a mass 5 is slidable along a radial rod 4 mounted on the rotated disk 1 and is drawn towards the centre by a leaf spring 10 secured to a block 7 shaped to produce movements directly proportional to the speed. A member 14 carried by the mass 5 traces visible circles 19 which are read against a seale 18 marked on the glass cover of the instrument. In a modification, the centrifugal mass is carried by a spring-controlled arm pivoted eccentrically on the disk 1.
Patent GB-179827-A (GB)
Title: Improvements in metal containers
IPC: B65D51/18
Filed: 1921-05-13
Abstract: 179,827. Salles, E. L. R. May 13,1921. Addition to 167,742. Lids, hermetic.-A tight closure for a metal container comprises a ferrule a, preferably of seamless metal. secured at b to the cover, its other edge g being free and bent towards the wall of the cover, the ferrule forming an elastic abutment against the walls of the container. The ferrule may be corrugated, Fig. 3, and a thin metal sheath d<1> may be fitted over the edge of the container. In other modifications, the ferrule may be secured to the container, or two ferrules may be provided, secured to either container, or cover, the cover fitting within or outside the container, or two superimposed covers with like ferrules may be provided.
Patent GB-1081248-A (GB)
Title: Process for preparing pyridoxal-5'-orthophosphate
IPC: C07F9/58
Filed: 1966-03-28
Abstract: Pyridoxal - 51 - orthophosphate is prepared by phosphorylating N1 N1 - di - (2 - methlyl -3-hydroxy - 5 - hydroxymethyl - 4 - pyridyl - methylidene)-hydrazine with a mixture of polyphosphoric acids (prepared by heating orthophosphoric acid with phosphorus pentoxide), and subjecting the resulting polyphosphate to hydrolysis and to diazodegradation (i.e. replacement of the diazo radical by oxygen atoms). The hydrolysis may be carried out by heating with water and an inorganic acid, and the diazodegradation by reacting with nitrous acid. Examples are given.
Patent GB-958110-A (GB)
Title: Circuit arrangement employing controlled rectifiers
Inventor: LOTT HEINZ GUNTER
IPC: H02P7/292
Filed: 1963-04-05
Abstract: 958,110. Control of D.C. motors. LICENTIA PATENT-VERWALTUNGS G.m.b.H. April 5, 1963, No. 13701/63. Heading H2J. [Also in Division G3] A reversible D.C. motor 5 is connected between the centre tappings of inductors 3, 4 in the output circuit of rectifiers 1, 2 which are in opposed parallel relationship and are of the three-phase bridge type preferably employing semi-conductor controlled devices. When the ignition angles of the rectifiers are held at zero and 180 degrees respectively, the motor voltage is equal to the maximum output voltage of one rectifier. The mean value of the output voltage of both rectifiers is equal to zero when the ignition angles are both at 90 degrees. For operation between these limits, the voltage applied to the motor is of pulse form, the average value being determined by phase angle control of the rectifiers during alternate halfcycles of the A.C. supply. The control of the rectifiers is effected by member 9 which compares the actual and desired speeds of the motor for retroactive regulation. Current limiting is provided by potentiometer 10 supplying a feedback signal to member 9. A smoothing choke 6 is provided. Regenerative braking is afforded by feedback through the rectifiers.
Patent GB-1103732-A (GB)
Title: Improvements in or relating to high-speed printers
IPC: B41J9/42
Filed: 1965-03-31
Abstract: 1,103,732. Selective printers. HONEYWELL Inc. 31 March, 1965 [11 June, 1964], No. 13732/65. Heading B6F. A high-speed selective printer having a continuously rotating type carrier 12 with alphanumerical characters 14 disposed along the circumferential periphery and a plurality of like characters extending along a printing line opposite impression hammers 10, is provided with an electromagnetic assembly 44, which is energized during line spacing of a record web (not shown) to prevent the rebound of actuated hammers. Each hammer 10 comprises a forward section 16 and a rear section 18 joined by a shank 20, the forward section terminating in an arcuate surface 22. The hammer is supported on leaf springs 30 which bias the hammer to rest against an actuating arm 26, which is operated by an electromagnet 36 to impel the hammer for impression. To prevent rebound the electromagnet 44 is arranged over the hammers 10 in such a manner that cores 46, 48 thereof are disposed over the sections 16, 18, respectively, to provide a minimum magnetic flux path, so that on energization of the magnet 44 oscillations of the hammers are quickly damped out. In another embodiment (Fig. 2A) the electromagnet 44 is replaced by a toroid shaped magnet whose cores co-operate with adjacent surfaces on projections mounted on the forward sections 16 of the hammers.
Patent GB-623873-A (GB)
Title: Improvements relating to the automatic regulation of alternating current dynamos working in association with batteries
IPC: H02J7/20
Filed: 1947-05-22
Abstract: 623,873. Automatic voltage control of variable speed alternators. ROTAX, Ltd., and HAMILTON, R. F. G. May 22, 1947, No. 13760. [Class 38 (iv)] An automatic regulator for an alternator 2 supplying a load 4 and battery 3 through a rectifier 5, more particularly for maintaining close regulation over wide ranges of speed and load, comprises a variable resistor, such as a carbon pile 11, 12, varied in response to the battery voltage and controlling direct current saturation of a saturable reactor 8, 10, through which the field 1 of the alternator is fed over rectifier 9. Adjustable magnetic bias may also be applied to the reactor by a further D.C. winding energized from the battery through a rheostat and opposing the winding 10. Field excitation may also be provided in part, by current transformers 7 in the alternator output leads, the transformers feeding recti. fiers 6. A switch 13 and resistor 14 permit excitation from the battery, when required. To reduce the variation required of the pile 11, the saturating circuit may be energized from across the field. circuit. Instead of the current transformers 7 and rectifiers, a winding assisting winding 10 and carrying the rectified output current of the alternator may be provided on the reactor.
Patent GB-528530-A (GB)
Title: Improvements in lubricant-dispensing devices
IPC: G01F11/02
Filed: 1939-05-09
Abstract: 528,530. Lubricant dispensing apparatus. KREMER, R. W. May 9, 1939, No. 13816. [Classes 102 (i) and 102 (ii)] Apparatus for dispensing lubricant comprises a piston 11 slidable within a container 1 for the lubricant and fixed to a tubular piston rod 13 provided with rack teeth 16 forming part of a rack and pinion mechanism by which the piston is moved to force lubricant through an aperture 12 in the piston into the rod 13 which passes through the cover 7 of the container, the upper end 23 of the rod 13 always remaining outside the cover. The rack and pinion mechanism may be operated by a lever 20 which rotates a pinion 17 through a preferably reversible ratchet coupling 21. The upper end 23 of the rod 13 may be provided with a platform 25 with co-axial grooves 26 to receive inverted grease-gun cartridges or other receptacles 24 of different sizes. The latter may be held in position by a cover 28 carried by a rod 29 which is guided by a tube 32 which passes with clearance through the cover 7 and is secured to the piston 11. Alternatively, the upper end 23 of the rod 13 may be closed by a hollow cap 40 leading to an outlet pipe 41 and housing an externally operated pinion 48 which engages a rack 47 on the rod 43 of a piston 44 having a non-return valve 46 and slidable within the hollow piston rod 13, for delivering a pre-determined measured quantity of lubricant.
Patent GB-1176052-A (GB)
Title: Production of Light-Sensitive Coatings for use in the Manufacture of Copying Materials
Inventor: DELZENNE GERARD ALBERT
IPC: G03F7/016
Filed: 1967-03-23
Abstract: 1,176,052. Diazo-oxindoles. GEVAERTAGFA N.V. 1 March, 1967 [23 March, 1966], No. 13823/67. Heading C2C. [Also in Division G2] Diazo-indoles of the formula wherein R is hydrogen or an alkyl or carboxylic or sulphonic acyl group and R 1  and R 2  are hydrogen or together complete a fused benzene ring, are prepared by refluxing the appropriate 3 - p - tolylsulphonyl - hydrazono - oxidoles with NAOH in methylene chloride. The compounds in which R is an acyl group may also be prepared by treating the corresponding compounds in which R is hydrogen with a carboxylic acid chloride or a sulphonyl chloride. Examples describe the preparation of diazooxindoles and diazo-benz[e]-indolinones in which R is hydrogen or a methyl, acetyl, benzoyl, 1- naphthoyl and cinnamoyl group.
Patent GB-775341-A (GB)
Title: Improved method of blasting
Inventor: TAYLOR WILFRED
IPC: E21C37/12
Filed: 1954-01-20
Abstract: 775,341. Fluid-pressure blasting devices. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 20, 1954, No. 13859/53. Drawings to Specification. Class 9 (1). Water under pressure is pumped into a sealed, borehole until the neighbouring strata are saturated and a charge of explosive as in Specification 670,453 is then fired, flame-quenching agents being incorporated in the explosive. Specification 743,998 also is referred to.
Patent GB-730586-A (GB)
Title: Improvements relating to carriers for pannier bags and such like
Inventor: SMITH WILLIAM BERNARD
IPC: B62J9/00
Filed: 1952-06-03
Abstract: 730,586. Cycle luggage carriers. MIDLAND GEAR CASE CO., Ltd. Aug. 28, 1953 [June 3, 1952], No. 13885/52. Class 136(1). In a carrier for use in the attachment of a pannier bag to the rear part of a motor cycle, the carrier being of the type com prising a panel 1 providec at its base with a shelf 2 capable of being foldec close to the panel for stowing from a horizontal bag supporting position, the panel 1 is provided at its middle and at its sides with several holes 9 for the reception of bolts for fixing the panel to brackets 10 having eyed ends 11 capable of being directly connected to the motor cycle frame or its accessories. The shelf 2 is pivotally connected to the panel 1 by links 5 and a pivot pin 3 slidable in slotted guides in side flanges 4 of the panel 1.
Patent GB-1391942-A (GB)
Title: Apparatus and method for fluid treatment of textile fabric in rope form
IPC: D06B3/26
Filed: 1972-03-24
Abstract: 1391942 Treating fabrics in rope form UNITED MERCHANTS MFRS Inc 24 March 1972 13962/72 Heading D1L A winch machine for the liquid treatment of material in rope form of the type in which the rope is drawn, by an endless chain 40 attached to one end of the material, continuously through a treatment liquid as a series of loops hanging between a winch roller 30 and a scroll or guide member 70 is provided with control devices which independently control the rotation of the winch and the scroll and the movement of the endless chain conveyor.
Patent GB-424410-A (GB)
Title: Waterproofing leather
IPC: C14C9/00
Filed: 1933-05-13
Abstract: Vegetable-tanned leather is waterproofed by treating the surface with an aqueous solution of a quaternary ammonium salt, a quaternary phosphonium salt or a sulphonium salt, such salt containing a saturated or unsaturated aliphatic chain of not less p  than ten carbon atoms.  Suitable salts are dodecyltrimethyl-ammonium chloride (from dodecyl chloride and trimethylamine), cetyltrimethylammonium chloride, octadecyl - pyridinium iodide, cetylpyridinium bromide, stearylpyridinium bromide, p - stearamidophenyltrimethylammonium methyl sulphate (made by condensing asymmetrical dimethyl - p - phenylenediamine with stearoyl chloride and treating with dimethyl sulphate) and methylcetylpiperidinium methyl sulphate (made by heating together 2 molecules of piperidine with 1 molecule of cetyl bromide at 120--150 DEG  C. until no further formation of piperidine hydrobromide occurs, separating the cetyl piperidine produced and warming with dimethyl sulphate); trimethyl- or triethyl-cetylphosphonium bromide (made by interacting trimethyl phosphine and cetyl bromide) and trimethyl or triethyldodecylphosphonium bromide (made by heating, for example, triethylphosphine with dodecyl bromide in ether solution under pressure at 80 DEG  C.); cetyldimethylsulphonium methyl sulphate (made by heating together dimethyl sulphate and cetylmethyl sulphide prepared by interacting equivalent quantities of cetyl mercaptan and dimethyl sulphate), benzylcetylmethylsulphonium methyl sulphate (made by heating dimethyl sulphate with cetylbenzyl mercaptan, which is prepared by heating cetylmercaptan with sodium in methanol, pouring the product into water, extracting with ether, distilling under 40 m.m. pressure and collecting the fraction boiling between 250 and 260 DEG  C.), dodecyldimethylsulphonium bromide (made by heating methyl bromide with dodecylmethyl sulphide until a water-soluble product is obtained, dodecylmethylsulphide being made by interacting equivalents of dodecyl mercaptan and dimethyl sulphate in an aqueous alkaline medium).  Specifications 294,890, [Class 120 (iii)], 372,325, 379,396, 390,218, and 419,941 are referred to.
Patent GB-993846-A (GB)
Title: Electronic trigger-pulse-generating circuit arrangement
Inventor: DARKE JAMES ANTHONY
IPC: H02M7/15
Filed: 1961-04-19
Abstract: 993,846. Transistor oscillator circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 9, 1962 [April 9, 1961], No. 14146/61. Heading H3T. A trigger pulse circuit for a controlled rectifier comprises a transistor blocking oscillator keyed on and off by a sawtooth waveform which is derived from the A.C. supply to the controlled rectifiers and a controllable D.C. bias, the point in the A.C. cycle at which the oscillator switches on being determined by the value of the D.C. bias. Referring to Fig. 1, the A.C. input from transformer T1 is rectified by diode D1, and applied across Zener diodes Z1, Z2, Z3. The potential across diodes Z1, Z2 provides a pulsed supply for the blocking oscillator TR1, and is also connected to a circuit comprising R3, R4, C1 to produce a sawtooth waveform across capacitor C1. The positive potential across diode Z3 is fed to potentiometer RV1, the variable output from which is added to the sawtooth and applied to the base of transistor TR1 to vary the point in the A.C. cycle at which the oscillator switches on. During the time in which TR1 is conducting, a train of output pulse are produced in the output winding of T2, a diode D3 being provided to prevent reverse trigger current flowing. A diode D2 being provided to improve stability at different ambient temperatures. In a second embodiment, Fig. 2, in which pulse trains are produced every half cycle of the A.C. input, the D.C. bias and sawtooth waveform derived from a bridge rectifier D7 . . . D10, a diode D11 and low resistor R14 being provided to rapidly discharge the capacitor between charge periods. The blocking oscillator is provided with two transformers T3, T4 which form the collector load during alternate half cycles. Both transformers may be wound on a common core. Automatic voltage control of the controlled rectifier output may be achieved by replacing the potentiometer RV1 by an automatic control sensitive to the output voltage from the controlled rectifier.
Patent GB-185763-A (GB)
Title: Improvements in and relating to steam boilers and the like
IPC: F22D1/36
Filed: 1919-06-04
Abstract: 185,763. Ferranti, S. Z. de. June 4, 1919. U.tube superheaters. - A water-tube boiler fitted with a steam superheater is provided with reversible regenerators of comparatively small capacity through which the products resulting from the combustion of pulverulent solid, liquid or gaseous fuel and the air for combustion are passed alternately at short intervals. Steam superheaters of various constructions may be arranged between the main heating-tubes of the boiler. Fig. 8 shows a superheater drum SD placed at the bottom of a boiler between water drums W and provided with a vertical partition D dividing the drum into longitudinal chambers to which the superheater tubes ST are connected. In an alternative arrangement the superheater drum may be arranged at the top of the boiler between two steam-and-water drums.
Patent GB-1300422-A (GB)
Title: New products of biological interest
Inventor: PENDSE GANESH SITARAM
IPC: A61K39/00
Filed: 1970-03-24
Abstract: 1300422 Fungus INDIAN DRUGS RESEARCH ASSOCIATION 24 March 1970 [28 March 1969] 14187/70 Heading C6F [Also in Division A5] The fungus Phomopsis paspali (ATCC 20244) is cultivated in a nutrient medium for 15-20 days at a temperature of 20-25‹C, thereafter the fungus and/or nutrient medium is/are extracted with one or more organic solvents such as ethyl alcohol, methyl alcohol, chloroform, ether or benzene, and the solvent is evaporated from the extract under reduced pressure to yield a dried product. The ethanol-soluble extract is about 85% soluble in water at room temperature, contains no sulphur when submitted to sodium fusion test and results in no increase of sugar content when submitted to acidic hydrolysis. The product induced tranquility, sedation and fine tremors in mice, rats, and dogs, reduced the body temperature of these animals and potentiated the hypnotic action of hexobarbitone. The ether extract of the ethanol extract contains no alkaloids or glycosides, gives a strongly positive Liebermann-Burchard reaction and exhibits three well-defined spots in thinlayer chromatography on silica gel using chloroform: methanol (95:5) as solvent and vanillin in 50% phosphoric acid as developing agent. The solvent extracts may be extracted with ether, petroleum ether or chloroform and the resulting solution dried. Components in the dried products may be chromatographed on alumina and eluted with petroleum ether, benzene and chloroform. It is stated that the biologically interesting fraction is obtained only in the chloroform eluate. The active products may be compounded with therepeutically-compatible solid or liquid carriers.
Patent GB-1334158-A (GB)
Title: Vane-type rotary hydraulic machine
IPC: F04C15/06
Filed: 1971-05-11
Abstract: 1334158 Rotary hydraulic machines YUKEN KOGYO CO Ltd 11 May 1971 [9 July 1970] 14203/71 Heading F1F In a rotary hydraulic machine having radial vanes 7 co-operating with a cam ring 6, the working spaces a, b which are out of communication with both low-pressure and highpressure chambers 2, 3 are connected via openings 14 to an intermediate pressure obtained by connection to the high-pressure chamber 3 via a pressure reducing valve 10. The valve 10 is also connected to an opening 11 in a recess 12 in a side plate 8 to provide an intermediate pressure to bias the vanes 7 in the region of the low-pressure chamber. Further recesses 17 are connected to the high-pressure chamber 3 to bias the vanes over the remainder of their path.
Patent GB-313488-A (GB)
Title: Improvements in or relating to electric motors without casings for building into other machines or apparatus
IPC: H02K1/18
Filed: 1929-05-07
Abstract: 313,488. Siemens - Schuckertwerke Akt.-Ges. June 12, 1928, [Convention date]. Addition to 311,732. Frames.-In a motor as described in the parent Specification eddy-currents through the frame and shaft are prevented by insulating one of the bearings. This may be done by surrounding the bearing-block with an insulating casing, or an insulating varnish may be sufficient.
Patent GB-346595-A (GB)
Title: Improvements relating to continuous metal-rolling plants
IPC: B23D25/00
Filed: 1930-05-09
Abstract: 346,595. Rolling. FELLOWS, J., Ferndale, Wellington Road, Bilston, Staffordshire. May 9, 1930, No. 14281. [Class 83 (iv).] Dividing by a single blade.-If the end of a hot strip passing through a continuous rolling-mill fails to enter the pair of rolls subsequent to the first rolls A, the operator pulls down the lever P which swings a cutter n into the path of the bar which digs into the bar and severs it as it travels over the cross bar F. The cutter is carried by an arm H clamped to a square bar G with trunnion ends along which it can be adjusted to operate, opposite any groove in the rolls. Side guides d, d are provided. The cutter may be dropped electrically.