baber/WOPTO huggingface dataset:
Patent GB-1013134-A (GB)
Title: A synchronising arrangement for an alternator to be driven by a turbine of a gas turbine power plant
Inventor: SLATTER BRIAN HUDSON
IPC: H02J3/42
Filed: 1962-08-15
Abstract: 1,013,134. Synchronizing. BRISTOL SIDDELEY ENGINES Ltd. Nov. 14, 1963 [Aug. 15, 1962], No. 31300/62. Heading H2H. In a synchronizing arrangement for an alternator driven by a power turbine of a stand-by gas turbine power plant, the turbine is run-up at a reduced rate as synchronism is approached and a breaker, connecting the alternator to a grid supply, is closed when the alternator voltage is in frequency and phase agreement with that of the supply. As shown, during run-up an actuator motor 24 increases the fuel flow to the power turbine at a predetermined initial rate and the alternator and the supply voltages are fed through transformers T1, T2 to their respective inputs of a voltage comparator, a phase and slip detector and a frequency comparator. The voltage comparator compares the alternator voltage with the supply voltage and when the difference is outside limits set by a potentiometer P the alternator voltage is raised or lowered by de-energization of the appropriate relay RL1, RL2 through fail-to-safety amplifiers. The frequency comparator monitors the alternator frequency when the alternator voltage is within 30% of the supply voltage to de-energize a relay RL5 when the alternator frequency is 2 cycles below the supply frequency. which inserts an interrupter in the supply to the actuator motor to reduce the rate of increase of fuel flow to the power turbine. The phase and clip detector determines frequency error to a greater accuracy than the frequency comparator and further energizes a breaker closing circuit through a relay when the alternator and supply voltages are in synchronism. The finite closure time of the breaker is adjusted for by a breaker time constant adjustment providing a fixed time advance and a variable phase advance of a trigger circuit in the phase and slip detector. The frequency comparator measures the half period time of the difference frequency by a condenser and Zener diode timing circuit. Specification 1,013,135 is referred to.
Patent GB-1471479-A (GB)
Title: Nitrothiazole azo compounds
IPC: C09B29/09
Filed: 1974-07-16
Abstract: 1471479 Nitrothiazole azo dyes SANDOZ Ltd 16 July 1974 [17 July 1973] 31408/74 Heading C4P Novel dyes of low solubility in water have the formula in which R 1  is H, C 1-6  alkyl, phenyl, or phenyl substituted by CN and/or up to three substituents selected from Cl and Br, each of R 2  and R 3  independently signifies H, C 2-6  alkenyl, C 5-7  cycloalkyl, unsubstituted C 1-6  alkyl or C 1-6  alkyl substituted by a cycloalkyl or cycloalkenyl radical each of which contains 5-8 C, with the proviso that when one of R 2  and R 3  is H, the other has a significance other than H, R 4  signifies an α- or #-chloro- or bromo-ethyl radical, R 5  is H, OMe or OEt, and X is -CO- or -COO-. The dyes prepared by diazotization and coupling, are useful as disperse dyes giving blue hues on linear or aromatic polyesters, cellulose acetates and synthetic polyamide fibres and fabrics.
Patent GB-223437-A (GB)
Title: Improvements in or connected with hulls for flying boats
IPC: B64C35/00
Filed: 1923-12-17
Abstract: 223,437. Blackburn Aeroplane & Motor Co., Ltd., and Rennie, J. D. Dec. 17, 1923. Frames and framing. - In a metal hull for flying boats, fore-and-aft deep transverse frames 18 the exterior edges of which are notched to accommodate longitudinals 17 are connected by linings 22 terminating in feathered extensions 23, this construction serving to distribute shocks and strains received from contact with the water. The frames 18 are in the way of and are respectively connected to the fore and aft spars of the wings. The bottom of the hull is cellular and comprises a triangular keel 2 terminating in a rubbing- strip 4 the base of the triangle being extended at 6 and flanged to conform. to the dehedral angle of the boat. The box - section longitudinals are secured to the interior of the bottom are spaced apart by transverse intercostal members 10. The bottom is formed of a series of concave longitudinal plates 9, supported by the longitudinals 8, the inner edges of the inner strip being secured to the keel and the outer edges of the outer strip being secured to the lower edge of the bell shaped hull. The transverse frames intermediate of the deep frames 18 are shallower and likewise notched to accommodate the longitudinals 17.
Patent GB-386390-A (GB)
Title: Improvements in and relating to railway track gauges
IPC: E01B35/04
Filed: 1931-11-16
Abstract: 386,390. Rail gauges ; pendulumtype. WILLIAMS, D. D. and WILLIAMS, Ltd., H., Railway Appliances Works, Darlington. Nov. 16, 1931, No. 31613. [Class 106 (ii).] A super-elevation gauge mounted on a trolley which is pushed along a railway track comprises two pendulum members g<1>, g<2> connected to a central member g pivoted at f, the deflection of the pendulum being indicated by a pointer h operated from the member g through a quadrant i and pinion i<1>. One of the trolley wheels b is slidably mounted and maintained in contact with the rail by a spring l, thus forming a track gauge, the width between the rails being indicated by a pointer m. The dip at a rail joint is indicated by a pointer s operated by the vertical support p of a roller o pressed into contact with the rail surface by a spring q. The roller o is situated midway between two longitudinal trolley wheels c.
Patent GB-1045189-A (GB)
Title: Improvements in or relating to apparatus for cleaning carpets, furniture coverings, and other textile articles
IPC: A47L11/34
Filed: 1963-08-09
Abstract: 1,045,189. Carpet cleaners. SIEMENSELECTROGERATE A.G. Aug. 9, 1963 [Aug. 11, 1962; Aug. 18, 1962; Aug. 31, 1962; Nov. 15, 1962], No. 31638/63. Heading A4F. Carpets and like textile articles are cleaned by rubbing or rolling into them a foamed detergent which dries to a powder and is subsequently sucked away together with the dirt released from the textile threads, by a vacuum cleaner. Air from a vacuum cleaner outlet 13 is blown through pipe 12, aperture 11 and the central one of three distribution chambers 8 (Fig. 2, not shown) into the liquid detergent 5 in the foam developing container 4. The air distribution chambers 8 have connecting apertures 9, 10 at their bottoms so that the central air distribution chamber becomes completely emptied of liquid before the others start to empty, so producing the foam in a regulated fashion. Baffle surfaces 19, 20 are provided to prevent liquid spillage during movement of the apparatus. The coarse vesicular foam produced, converted to fine foam by passage through a porous plastic body 15, passes out, through outlet apertures 14 through chamber 17, and is applied to the surface to be cleaned by plastic rollers 18 pivotably secured by U shafts 21. The air flow to the container 4 may be regulated by insertion of feed pipe 22 (Fig. 4, not shown) between the air blower and stub pipe 12. With flap 24 urged shut by spring 25, blower air passes out through aperture 23 so that no foam is produced but air continues to pass through the blower to cool it. To make foam, flap 24 is pulled up by a draw chain (not shown) to divert air to the foam container 4. In a modification a subsidiary frame 26 with rubbing foam strips 28 is pivotably secured to the apparatus which may be tilted in use to raise the strips clear of or bring them to bear on the surface to be cleaned. Alternatively extra foam or bristled rollers which may be grooved or notched may be used in place of the strips.
Patent GB-469066-A (GB)
Title: Improvements in the treatment of charges supplied to internal combustion engines
IPC: F02M25/022
Filed: 1936-11-18
Abstract: 469,066. Moistening charge. MONRO, W. E., and DUMBRELL, J. W. Nov. 18, 1936, No. 31653. [Class 7 (ii)] Steam drawn through a pipe a from the top of radiator, into the induction pipe g, is dried in a device comprising an inner chamber d, and a series of outer chambers b, c, e, f, formed by radiating baffles, ports 1 . . . 4, being provided so that the steam passes through the chambers b, . . . f, in series. The steam may be previously heated in a chamber clamped to, or formed integral with, the exhaust pipe.
Patent GB-1522148-A (GB)
Title: Glass fibres coated with a size which provides forming and bonding properties
IPC: C08L69/00
Filed: 1975-07-29
Abstract: 1522148 Fibre lubricants OWENS-CORNING FIBERGLAS CORP 29 July 1975 [3 Oct 1974] 31713/75 Heading C5F [Also in Division C3] Glass fibres which are to be used as a reinforcement for thermoplastic or thermosetting polymers are coated with the dried residue of an aqueous size that comprises an amide of a fatty acid with a secondary amine that has two organic chains each of which has a ratio of carbon to oxygen no more than 4 and each of which includes a hydroxyl group, together with an emulsified film-former. Preferably the secondary amine is an ethylene oxide adduct of a dialkanolamine. Preferably also the size contains a silane glass-coupling agent. The film-former may be an epoxy resin or a polyurethane, or the two together or a polyester. The coating improves lubrication of the fibres during wet and dry handling and also improves the bond between glass and polymer.
Patent GB-216806-A (GB)
Title: An improved coin freed apparatus for delivering cigarettes, matches, confectionery or other articles
IPC: G07F11/02
Filed: 1923-12-18
Abstract: 216,806. Thorrold, J. F. Dec. 18, 1923. Delivery of articles stored in piles; coin action, mechanical-connection, weight, and multiple-coin. - The bottom article of a pile is engaged by two coins 14 upstanding from a vertical slot in a drawer 5, and is pushed into a recess in the drawer for delivery when this is pulled out. The coins are inserted in separate side slots 8 and are guided by a three-armed pivoted switch 11 and curved portions 10 of the coin shoot to the slot in the drawer, where they rest side by side on a member pivoted at 16 below the drawer and provided with a pair of arms 15 and a balance weight 17. If only one coin is inserted, the member tilts and one arm rises into the slot in the drawer to block its movement. If an odd number of coins more than two is required to free the machine, one of the arms 15 is made heavier than the other by an amount corresponding to the weight of one coin. The pile of articles rest on a pair of aligned ledges 18 on opposite sides of the machine. The coins after pushing out an article become unsupported by the plate on which the drawer slides and drops through the slot into a money-box.
Patent GB-1041667-A (GB)
Title: Body of material and handle
IPC: A47K5/05
Filed: 1963-08-12
Abstract: 1,041,667. Soap holders. R. B. STAVER. Aug. 12, 1963, No. 31760/63. Heading A4V. [Also in Divisions B3 and B4] A holder 2 for a body of material, which may be erodable such as a soap tablet 1, has a lower portion 3 having a surface secured to the upper surface 4 of the tablet and a stem 6 which is engageable between two adjacent fingers 9, 10 of a hand grasping the tablet. As shown in Fig. 1, the side of the tablet has a projecting rim 8 to enable the fingers and thumb to gain a more secure hold and the stem is provided with a retaining head 7, the holder being at least partially hollow, so that the tablet floats in water, and the portion 3 is embedded in the upper surface of the soap tablet. In modifications the holder is secured to the tablet by suction or is in separable upper or lower parts, either part having an overhanding shoulder to seal off the junction of the tablet to the holder. The lower part of the holder which is discarded when the tablet is exhausted, has a roughened surface to securely hold the tablet and is secured to the upper part by snap engagement or suction. Means for separating the parts may consist of an aperture for insertion of a finger or a finger-operated plunger. The holder is made of metal, wood or resilient plastic and the entire outer surface may be roughened to facilitate grasping. In further modifications the portion 3, stem 6 and head 7 are non- circular and the curved or straight fingercontacting surfaces of the portion 3 and head 7 grip the fingers without the fingers contacting the stem, the wedging leverage ratio of the vertical pincers-like force to the horizontal squeezing force being described by F2/F=1/(tan A+B (see Fig. 9, not shown). The tablet is shaped so that the operative surface 5h (Fig. 10, not shown) remains of constant size during the wearing down process, the angle C being according to the equation C=A+A-tan [(e2/el) see A-TanA] and, el and e2 being the average rates of erosion at h and s the average rates of erosion at h and s respectively, (e2/e1) see A=Tan A. The body may be a container for material to be applied to an object. ship and including a dwell in the pressurized condition. The whole fruit is centred with respect to the bridge 8 by a pocket in the form of an inverted pyramid by a pair of members 40 carried by pivoted shoots 46 which are spring urged to the pocket forming position, the arrangement being such that the pocket forming portions 40 are opened in timed sequence to permit the fruit halves to slide over the guide rods 81, 82. Pivoted arms 140 serve to sweep residue of a de-juiced fruit half from the grid 15 prior to feeding a further fruit half thereto. The plunger 54 and presser discs 12 are carried by a beam 2 which is vertically movable by a pneumatic piston and cylinder unit 6 under the control of electrical and fluid circuits (Fig. 13, not shown).
Patent GB-421690-A (GB)
Title: Improvements in apparatus for heating liquids
IPC: F24H1/20
Filed: 1933-11-15
Abstract: 421,690. Heating water. WRIGHT, A. L., and WRIGHT, A., 28, Lingfield Avenue, Kingston-on-Thames. Nov. 15, 1933, No. 31821. [Class 64 (i)] In water heaters having a tank 1 and an inner vessel 5 open at the top and closed at the bottom and containing the heating means 7 arranged so that water therein does not mix with water in the tank, a cowl or cap 8 is spaced from the inner vessel and disposed above the top thereof and has sides extending down to or below the level of the upper edge of the vessel 5 ; the water inlet 3 is outside the inner vessel 5, and an inverted U-tubo 9 or the like provides an open connection between the space below the top of the vessel 5 and the tank space above this top, so that air is trapped in the cowl. An open tube 11 in the cowl 8 projects into the vessel 5 and is covered by a cap 10 with its sides extending down to above the top of the vessel 5 or the air trap may be formed by a recess 12 in the top of the cowl 8 depending into the vessel and apertured at 13 to receive water. An open tube 14 may extend through the aperture 13 into the vessel 5 and the water level is maintained in the tank below the level of the top of the tube. The cowl may be supported by extensions on the vessel 5 or as in Fig. 4 the sides of the vessel extend to the top of the cowl side portions 15 being bent in and a band 16 attached to form the lower edge of the cowl. The tank may be closed and has a thermostat 6 and an air vent 2 or overflow tube ; the water inflow may be less than the maximum rate of outflow at 4.
Patent GB-446830-A (GB)
Title: Improvements in or relating to electrically heated vaporizers for use in internal combustion engines
IPC: F02M31/08
Filed: 1934-11-06
Abstract: 446,830. Vaporizers. JOHNSON, J., 11, Bullers Green, Morpeth, Northumberland. Nov. 6, 1934, No. 31893. [Class 7 (iii)] Mixture is heated by an electric bulb e, of spherical shape such as is used in the lamp of a motor vehicle, the bulb being carried by a standard lamp-receiving socket mounted in a flanged member g secured by a threaded cap c. The socket is disposed in an open ended casing secured between the carburetter and the induction pipe. The side of the bulb remote from the incoming mixture may be plated to reflect heat on to the side on which the mixture impinges.
Patent GB-1191885-A (GB)
Title: Television Receiver comprising Circuits for Producing a Signal for the Automatic Gain Control and a Signal for the Automatic Frequency Control
Inventor: DIJKGRAAF CORNELIS LEENDERT
IPC: H04N9/68
Filed: 1967-07-12
Abstract: 1,191,885. Automatic gain and frequency control; television. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 12 July, 1967 [15 July, 1966], No. 32013/67. Headings H3Q and H4F. The invention relates to television receivers comprising circuits for producing a first signal for automatic gain control (A.G.C.) and in addition a signal for automatic frequency control (A.F.C.). In a first embodiment, the receiver comprises initial R.F. and mixer stages 4 and first I.F.. amplifying stages 5 common to both sound and vision channels, after which the channels separate, the sound I.F. passing to a sound channel 3 in which it is converted into an intercarrier signal which is amplified and frequency demodulated for application to a loud-speaker 8. The vision channel comprises a last I.F. transformer 10, sound I.F. filter 11 and detector 12, from which a first A.G.C. is derived via gate 15 and applied to the stages 4, 5. The output of detector 12 is also fed via cascaded video amplifiers 13, 21, the first of which is of variable gain, to the cathode of the picture tube 22; the output of amplifier 13 is also fed to an amplifier 20, the gain of which is manually adjustable by means of variable resistor 33, e.g. a cathode or emitter circuit bias resistor. The output of amplifier 20 is fed to a phase discriminator 27 which derives a second input comprising the intercarrier signal produced in diode 28 in sound channel 3, as disclosed in Specification 1,062,195. Phase discriminator 27 feeds an A.F.C. voltage via lead 32 to control the frequency of the local oscillator in R.F. and mixer stage 4. The output of amplifier 20 is also fed to device 24 which produces a second A.G.C. voltage which is applied via lead 25 to control the gain of video amplifier 13; because of this gaincontrol loop, adjustment of manual control 33 to vary the gain of amplifier 20 causes the gain of amplifier 13 to vary in an opposite manner, so providing contrast control; the overall gain to the A.F.C. line 26 and hence the automatic frequency control is, however, unaffected. In a second embodiment (Fig. 2, not shown), a similar arrangement, comprising manual gain control of a second amplifier stage within a gain-control loop in which the gain of a first amplifier stage is automatically controlled, is utilized in a colour television receiver to provide manual control of (1) the contrast, and (2) the saturation without affecting the colour demodulation circuits.
Patent GB-1012699-A (GB)
Title: Method of preparing simultaneously a positive as well as a negative intermediate foil for use in the preparation of printing plates
IPC: G03F1/92
Filed: 1964-08-06
Abstract: 1,012,699. Printing surfaces. M. DEPAOLI. Aug. 6, 1964, No. 32068/64. Heading B6C. Positive and negative images for making printing plates are simultaneously produced on transparent sheets a and b, respectively, by locating the sheet b, coated on its upper surface with a layer of pigmented thermoplastic material d, on the relief printing surface e of a heated metallic block c, placing the sheet a on said layer, and applying pressure to the assembly with a drum, the arrangement being such that areas of the tacky layer d representative of the surface e are transferred to the sheet a. Printing plates may be produced from the resultant imaged sheets by casting, pressing, electroplating or by photographic means. The sheets a and b may be of cellulose acetate or a polyester base material.
Patent GB-655534-A (GB)
Title: Improvements in or relating to the production of cellulose esters
IPC: C08B3/08
Filed: 1948-12-14
Abstract: Cellulose propionate is obtained by pretreating cellulose with a fatty acid containing up to 4 carbon atoms in the molecule and free from esterification catalyst or containing not more than 2 per cent of sulphuric acid, based on the air-dry weight of the cellulose, then mixing the pretreated cellulose with propionic anhydride so as to obtain an esterification mixture which is initially free from catalyst or contains not more than 2 per cent of sulphuric acid based on the air-dry cellulose, and then, while stirring or otherwise agitating the mixture, adding sulphuric acid at such a rate and for such a time that the temperature of the mixture rises to a maximum which does not exceed 40 DEG  C.  The cellulose may be pretreated at 15-35 DEG  C. for 1/2 -16 hours with a mixture of 20-40 per cent of propionic acid, 5-30 per cent of formic acid, and 0.2-2 per cent of sulphuric acid, these proportions being based on the air-dry weight of the cellulose. The cellulose is then treated with 330-400 per cent of propionic anhydride, previously cooled to below 0 DEG  C., e.g. to between -10 DEG  and -20 DEG  C.  Sulphuric acid in a proportion of 2-13 per cent of the weight of the cellulose is added gradually, preferably in the form of a solution in 5-8 times its weight of propionic anhydride, while stirring the mixture.  If cellulose propionate suitable for moulding is required, the temperature of the mixture during esterification is preferably kept between 5 DEG  C. and 35 DEG  C. For this purpose the sulphuric acid may be added over a period of 30-90 minutes, and the esterification may take about 3-6 hours. After completion of the esterification, the solution may be diluted with 100-300 per cent of propionic acid and then 50-170 per cent of water may be added either wholly in liquid form or partly as live steam.  The esterification solution may then be ripened at 60-100 DEG  C., after neutralizing all but 0.5-2 per cent (on the initial air-dry weight of the cellulose), of the sulphuric acid, e.g. by means of a magnesium salt such as the acetate, carbonate, or propionate.  The cellulose propionate may then be precipitated by means of water or dilute propionic acid.  The cellulose ester may be used in the production of filaments, yarns, films, foils, and moulded articles. The Specification as open to inspection under Sect. 91 comprises also the production of other cellulose esters, e.g. cellulose acetate, butyrate, and aceto-butyrate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-506639-A (GB)
Title: Improvements in and relating to ultra-short-wave thermionic systems
IPC: H03F1/13
Filed: 1937-11-24
Abstract: 506,639. Wireless apparatus. TELEPHONE MANUFACTURING CO., Ltd., PADDLE, L. H., and WHITEHEAD, C. C. Nov. 24, 1937, No. 32348. [Class 40 (v)] A neutralized push-pull amplifier comprises a pair of valves 11, 12 each of the type having an anode and a grid terminal at one end of the envelope the valves being mounted end to end with the grid terminal of one adjacent the anode terminal of the other. In Fig. 1, the apparatus is mounted on a cruciform base 10 on opposite arms of which the two valves are slidably mounted, the other arms carrying insulating supports 22 which carry tuning inductances 30 adjustably coupled to output inductances 31, the position of the latter with respect to the inductances. 30 being variable by rotation of shafts 34. The supports 22 also carry the neutralizing and tuning system which comprises conducting arms 24, the ends of which lie opposite the terminals 25 of the valves 11 and 12, and which carry fixed and movable vanes disposed between the arms so as to constitute two variable neutralizing condensers between each juxtaposed anode and grid, as shown in Fig. 3, and two variable tuning condensers across the tuning inductances 30. These condensers are adjusted by spindles 29 which pass through the base member 20 carrying valve 12. The anode and grid terminals of each valve are attached by connections 36 to the arms 24, Fig. 3. The neutralizing and tuning system thus forms a unit which is mounted so as to be independent of thermal expansion of the valves. In a modification the valves are mounted side by side on a shelf on bracket secured to a vertical panel, the neutralizing and tuning system being carried on a further support above the valves, Figs. 4 and 5 (not shown). Reference has been directed by the Comptroller to Specification 481,086.