baber/WOPTO huggingface dataset:
Patent GB-763448-A (GB)
Title: Improvements in or relating to gas turbine engine fuel systems
Inventor: MORLEY FREDERICK WILLIAM WALTO
IPC: F02C7/22
Filed: 1953-09-09
Abstract: 763,448. Gas-turbine plant ;centrifugal pumps. ROLLS-ROYCE, Ltd. July 29, 1954 [Sept. 9, 1953], No. 24945/53. Classes 110 (1) and 110 (3). A gas-turbine engine fuel system comprises a gear pump or other positive-displacement pump 10, Fig. 2, and a centrifugal pump 11 delivering fuel in parallel to a control means 18 for regulating the flow of fuel to the engine, at least the pump 10 being mechanically driven by the engine, by-pass ducting for returning fuel delivered by at least the pump 11 to the inlet side of at least one of the pumps, and flow control means in the by-pass ducting arranged on closure of a non-return valve 52, Fig. 5, contained in a device 25, Figs. 2 and 5, to allow fuel delivered by the pump 11 to pass through a by-pass duct 31 and to close when the rate of flow of fuel through the valve 52 exceeds a predetermined value. The control means 18 is manually settable by lever 19 and preferably includes means for compensating for changes in aircraft altitude and flight speed. The non-return valve 52 closes the delivery pipe 16 of the pump 11 at low engine speeds and during starting. The flow of fuel through the by-pass duct 31 is restricted by a restrictor 54. When the delivery pressure of pump 11 increases sufficiently to open the valve 52, a valve 56 is moved into the position shown to close the by-pass duct 31, by means of a piston 57 which is subjected on its two sides to the pressures upstream and downstream respectively of the valve 52. A relief valve 24 in the by-pass duct 30 of the pump 10 limits the maximum pressure developed by pump 10. When the delivery pressure of pump 11 exceeds this maximum delivery pressure of pump 10, it closes a non-return valve 26 in the delivery pipe 15 of pump 10, whereupon the whole of the delivery of pump 10 passes through the by-pass duct 30. Some of the fuel delivered to the common pipe 17 is returned to the fuel tank 12 by way of by-pass ducts 32 and 27 and a cooler 20 to cool lubricating oil circulated through the cooler by way of pipes 28. The flow of fuel through the cooler is controlled by a relief valve 33 which is set to open at a pressure below the pressure setting of relief valve 24. To ensure a minimum flow through the cooler under starting and other conditions, a duct 34 containing a fixed restrictor 35 may be provided in parallel with the relief valve 33. The pump 11 is driven mechanically by the gas-turbine engine or, as shown, by an air turbine 29 fed with air tapped from a compressor forming part of the engine. A booster pump 14 may be provided. In modifications, the by-pass duct 32 is eliminated, and flow of fuel through the cooler 20 is provided by returning one of the by-pass ducts 30, 31 to the cooler 20 instead of to the pump inlets, the other by-pass duct being returned to the duct 27; alternatively both by-pass ducts are returned to the cooler 20. Specification 763,449 is referred to.
Patent GB-438157-A (GB)
Title: Improvements in wagon tipping apparatus
IPC: B65G67/00
Filed: 1934-08-30
Abstract: 438,157. Tipping-apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ROBSON, R., Fraser & Chalmers Engineering Works, Erith, Kent. Aug. 30, 1934, No. 25010. [Class 78 (iv)] The wagon is run on to a platform resting on fixed supports. Underneath the platform a beam 4 carrying gripping-devices for the coupling chains 20 is guided by depending lugs on the platform while being raised and lowered by cam connections with the rotary frame members 6. The latter are rotated by cords fixed to their peripheries and running over guide pulleys 17 to winding-drums 16 operated by a motor 15. The initial rotation of the members 6 gradually tilts the wagon into contact with the rotatable bolster 14 and at the same time raises the beam 4 so that the chains 20 enter the slots 10 of the chain grippers carried by it. When the beam contacts with the platform, the beam, platform and frame members 6 rotate as a unit, the wagon rotating on the bolster 14 during the process. During this rotation, the pivoted catches 11, Fig. 5, inside the gripping-boxes rotate by gravity into a position in which they lock the chains against withdrawal. On reversing the rotation to restore the wagon, the catches are withdrawn again by gravity, thus making the whole locking process automatic.
Patent GB-278526-A (GB)
Title: Improvements in closed feed systems for steam power plants
IPC: F22D3/00
Filed: 1926-10-08
Abstract: 278,526. Weir, Ltd., G. & J., and Weir, J. G. Oct. 8, 1926. Condenser systems. - In a closed feedwater supply system for a steam power plant, the usual feed tank is replaced by a well a at or connected to the bottom of the condenser b, the capacity of the well being sufficient to accommodate accumulations of feedwater due to changes in the working conditions of the plant. A reserve feed tank h is connected to the top of the condenser by a pipe i and to the. pipe between the water extraction pump c and the feed pump d by a pipe m. When the water in the well is at the normal level corresponding to the usual conditions of working, a hand or float controlled valve j in the pipe i allows only the quantity of water required for make up to pass into the condenser. Two or more systems supplying a corresponding number of boilers may be connected to a common reserve feed tank. The systems are connected by valve controlled pipes between the feed pipes on the inlet and discharge sides of the water extraction pumps. Specification 126,758, [Class 123 (ii), Steam generators], is referred to.
Patent GB-443900-A (GB)
Title: Method of and apparatus for effecting wave range change-over in high frequency apparatus
IPC: H01F21/12
Filed: 1934-08-30
Abstract: 443,900. Inductances. KRAMOLIN, L. L. DE, 25, Nassauischestrasse, Wilmersdorf, Berlin. Aug. 30, 1934, No. 25035. Convention date, May 22. [Class 37] [See also Group XL] A wave-range changeover inductance comprises core parts b, c, d of magnetic material, the part b being varied in position in steps which can be regulated by set-screws m<1> .. m<5> on the rotatable shaft i, k. The core may have a graded permeability, and the coils n may be wound coaxially one around the other. Specification 409,737 is referred to.
Patent GB-338208-A (GB)
Title: Improvements in rotary printing machines
IPC: B65H9/06
Filed: 1929-08-16
Abstract: 338,208. Mann & Co., Ltd., G., Harker, P., and Turnbull, D. H. Aug. 16, 1929. Tripping-arrangements. - A rotary machine is provided with feeler mechanism to prevent the raising of the front lays and also the opening of feed grippers if the sheet is not presented correctly to the front lays 2, which are carried by a shaft 3. The feelers 12 are caused by arms 11 on an oscillating shaft 10, and if a sheet is positioned correctly the feelers move over a notch 30 in the feed-table 1, and the resultant upward movement of a lever 13 on the shaft 10 causes a slotted link 14 to move a spring-controlled pawl 6 on a lever 7, which is oscillated freely on the shaft 3, to engage a notched plate 5 fixed to the shaft 3, and thus to rotate the shaft 3 to raise the front lays 2. The lever 13 by means of a link 22 operates a weighted pawl 21 and permits operation of the feed grippers 19. If a sheet is not fed correctly, and the feelers 12 engage the notch 30, the pawls 6 fails to engage the plate 5 to raise the front lays, and also the pawl 21 is not operated and the grippers 19 remain closed and so cannot feed a sheet. The tripping of the lays 2 and the grippers may be controlled independently of the feelers 12 by operating the shaft 10 from the usual foot trip shaft for tripping the impression cylinder.
Patent GB-1236812-A (GB)
Title: New diamidine compounds and process for their manufacture
Inventor: DANN OTTO
IPC: C07D307/79
Filed: 1968-05-27
Abstract: 1,236,812. Diamidines. O. DANN. 27 May, 1968 [26 May, 1967], No. 25142/68. Heading C2C. The invention comprises diamidines of formula and their acid addition salts, wherein R is H or C 1-3  alkyl(R<SP>1</SP>) and X is -O-, -NH- or -CH 2 -, and a process for preparing them by first making a di-(iminoether hydrohalide) from the reaction of a dinitrile with R<SP>1</SP>OH and dry hydrogen halide in an anhydrous solvent, and then reacting the intermediate with dry NH 3  gas in an anhydrous solvent. Specified intermediates of given m.p. are 5- or 6-bromo-2-(4-amino, acetamino or nitro-) phenylbenzofurans; and 5- or 6-bromo-2-bromophenylbenzofurans and -indoles, and the corresponding dinitriles. Some benzofuran intermediates bear 3-methyl substituents, in addition. Therapeutic compositions having a tryparocidal action comprise compounds of the above formula or their acid addition salts, with a pharmaceutically suitable carrier. Peroral and subcutaneous administration are mentioned.
Patent GB-787288-A (GB)
Title: Sealing of packages
IPC: G09F3/03
Filed: 1955-09-02
Abstract: 787,288. Packaging. AGFA AKT.-GES. FUR PHOTOFABRIKATION. Sept. 2, 1955 [Sept. 2, 1954], No. 25309/55. Class 94(1). [Also in Group XX] Opposed surfaces of a package closure or sealing band, e.g. the closure of a box, Fig. 1a, or the sealing band of a roll of film, Fig. 3a, are united by adhesive to an interposed tape or foil 4 which comprises two interconnected layers, the connection between the layers being weaker than their adhesive connection to the surfaces, so that when the latter are pulled apart to open the package, the layers are separated and the packaging material is not damaged. The layers may be joined together by adhesive or, as shown in Fig. 2a, the tape may be formed by folding a strip coated on one side with adhesive, into the form of a flattened tube. The tape may be perforated at the folds. The end of the sealing band, Fig. 3a, is tapered and projects beyond the tape 4.
Patent GB-481374-A (GB)
Title: Improved fluxes and flux-coated electrodes for electric welding or the like
IPC: B23K35/04
Filed: 1936-09-17
Abstract: A flux for use in electric welding and like processes, e.g. for coating electrodes used in such processes, contains a substance such as graphite which when heated will produce a neutral atmosphere and also a magnesium-nickel alloy, e.g. an alloy containing about 10 per cent of magnesium and 90 per cent of nickel.  One or more additional deoxidizing agents such as a nickel-silicon alloy containing about 35 per cent of nickel and 65 per cent of silicon, and a ferro-titanium alloy containing about 45 per cent of titanium and 55 per cent of iron may be added.  The preferred flux contains 40-70 per cent of graphite, 5-25 per cent of magnesium-nickel alloy, 5-15 per cent of nickel-silicon alloy, and 5-20 per cent of ferro-titanium.  When used for coating welding electrodes, e.g. electrodes of nickel-copper alloy such as "Monel" (Registered Trade Mark) metal, the electrode is preferably first provided with a spiral wrapping of white asbestos and the flux then applied by extrusion.  Alternatively powdered or fibrous asbestos may be mixed with the other constituents of the flux.  The flux may be used in processes in which voids in iron castings are filled with "Monel" metal, in which case one or more of the substances cryolite, clay, and ilmenite, e.g. in the proportions of 5-15 per cent of each, are preferably added to the flux.  Such a flux may consist of 39 per cent of graphite, 12 per cent of magnesium-nickel alloy, 12 per cent of ferro-titanium, 8 per cent of nickel-silicon alloy, 9 per cent of cryolite, 10 per cent of clay, and 10 per cent of ilmenite.
Patent GB-917569-A (GB)
Title: Improvements in or relating to equipment for holding heating elements in industrial electric furnaces
IPC: H05B3/66
Filed: 1960-07-21
Abstract: 917,569. Supporting electric furnace heating elements. ZAVODY ELEKTROTEPELNYCH ZARIZENI (ZEZ) NARODNI PODNIK. July 21; 1960 [July 24, 1959], No. 25393/60. Class 39 (3). The upper end of a hook 3 supporting the element is inserted in a chamber 5 in a moulded brick 1 in the furnace roof so that a boss 7 on the hook 3 engages a recess in the chamber 5 and a roller 2 accommodated in a recess 8 in the hook 3 drops into an extension of the recess 8 to retain the hook in position. The hook can be removed after pushing the roller 2 into the recess 8 by an instrument 10.
Patent GB-179888-A (GB)
Title: Improvements in and relating to the art of puddling
IPC: C21C3/00
Filed: 1921-09-26
Abstract: 179,888. Hibbard, H. D. May 11. 1921, [Convention date]. Drawings to Specification. Purifying.-In making superior qualities of iron by a puddling process, a charge of iron and an oxidizing agent such as iron oxide is introduced into a rocking furnace provided with an internal dam, and the furnace is oscillated to move the charge to and fro over the dam. The slag containing the bulk of the silicon, phosphorus, manganese, and a considerable part of the sulphur is then drawn off, and fresh iron oxide, together with a flux, such as silica or fluor-spar, is added, and the puddling is completed.
Patent GB-864429-A (GB)
Title: Improvements in or relating to the extraction of sugar
IPC: C13B10/14
Filed: 1958-08-08
Abstract: In extracting sugar from sugar-containing vegetable material such as sugar-beet cossettes or sugar-cane slices, the material, e.g. at a temperature between 35 DEG  and 45 DEG  C. is subjected, in a vessel such as a revolving drum or a tank, to the action of, at most, 0.05% of its weight of sulphur dioxide and then to the action of chloroform, both of which render the cell walls of the material permeable to sugar.  The treated material is then diffused in water at a temperature between room temperature and 50 DEG  C.  The material may be subjected to the action of sulphur dioxide for, at most, 10 seconds, preferably 5 seconds, and to the action of chloroform for 5 to 15 minutes, preferably 10 minutes. The vessel may be partially evacuated before the sulphur dioxide and chloroform are introduced and the treatment with chloroform may be effected in an atmosphere saturated with its vapour.  The diffusion juice may be purified as described in Specification 674,794.  Specification 2603/1856, German Specification 653,098 and Austrian Specification 47,160 also are referred to.
Patent GB-1356284-A (GB)
Title: Equalizing electric charges on non-conductive web materials
IPC: H05F3/00
Filed: 1971-04-19
Abstract: 1356284 Feeding webs AGFA-GEVAERT AG 19 April 1971 [28 April 1970] 25623/71 Heading B8R [Also in Division G1] In apparatus for discharging static electricity from a moving web 1, the web runs over a cooled roller 4 and is then subjected to a stream of moist air issuing from a nozzle 5 so that condensation takes place on the surface of the web in the region of an earthed contact roller 6. In another embodiment, the web is cooled by cold air issuing from a plurality of jets (3) and is then subjected to moist air issuing from further jets (5), Fig. 5 (not shown). The relative humidity of the moist air may be varied in dependence upon deviations of the charge-state of the web from a desired value, these deviations being detected by a measuring device of known type.
Patent GB-256466-A (GB)
Abstract: 256,466. Harrison, D. J. Jan. 4, 1926. Time checking apparatus, check and token.-A receptacle for memoranda, documents, workmen's tokens, &c. is provided with means whereby the time of closing may be checked comprising one. or more slides - manipulated so as to close corresponding apertures in a locked lid and to expose to view a code word which the operator is able to telephone or telegraph to a central station whereat the time is noted, the slides being locked in their operated position. As shown in Fig. 2, the box 1 is divided into three compartments by partitions 2 and has a lid 4 with openings 6 hinged at one end 5 of the box, a combination lock being provided at the other end to secure the lid in shut position. Each of the compartments as shown in Fig. 3, is partially closed by a metal plate 7 secured to ribs 8 and the unclosed part is adapted to be covered when desired by a slide 9 operated by loop cords 10. The slides 9 are each furnished with a frame 13 holding a removable card 14 inscribed with the code sign or word and exhibited through the aperture 6 when the slide is operated. Spring catches 11 automatically lock the slides in forward position. The locking device for the lid shown in Figs. 6, 8 and 9 comprises four snap catches 15 mounted in an end partition 16 and two hasps 21 therefor, the hasps being adjustable along a slot 22 in the underside of the lid to co-operate with any pair of catches 15 in accordance with the setting of the pegs 24 of the key 23, Fig. 10. To frustrate attempts at opening the lock the lid is provided with a notched strip 25 which enters a recess 17 in the end wall 18 of the box. The notches 26, which register with holes 20 in the wall 18, have arcuate plates 27 which can be slid to an inoperative position depending on the setting of the key pegs. If a peg is inserted in a wrong hole the plate 27 will prevent withdrawal of the strip 25. To detect such attempts at opening the strip 25 may be covered with a strip of paper, card, &c. upon which the pegs will leave a mark.
Patent GB-385033-A (GB)
Title: Improvements in and relating to cartons or packages more particularly for granular substances
IPC: B65D5/72
Filed: 1931-09-14
Abstract: 385,033. Cartons. HARTMANN, C.W., Lyngby, near Copenhagen. Sept. 14, 1931, No. 25776. [Classes 18 and 66.] In a carton, particularly for granular substances, of the kind in which, disposed between the overlapping closure flaps at one end of the carton, is a slidable or rotatable member 8 or 14 respectively provided with one or more perforations 2 which can be brought into register with corresponding perforations in the end closure flaps to allow the contents to be poured out, the carton is provided with an airtight lining which can be punctured when the perforations in the member 8 or 14 and the closure flaps are brought into register. The lining may be formed as in Specification 288,734, [Class 18, Boxes &c.]. For manipulation purposes, the member 8 has a depending fingerpiece 9 with flanged ears at the sides and the member 14 has a projecting finger-piece 16. To prevent complete withdrawal of the metal strip 8, its inner end is provided with downturned teeth which engage in a rectangular &c. recess in the closure flap underlying the strip. The member 14 is pivoted on a pin 15 passed through the lower of the two uppermost closure flaps.
Patent GB-226170-A (GB)
Title: Improvements in locks
IPC: E05C9/02
Filed: 1924-10-30
Abstract: 226,170. Petersson, C. H. Dec. 15, 1923, [Convention date]. Fastenings for doors, windows, &.; multiple-bolt fastenings. - A fastening for windows, doors, &c. comprises one or more bolts 5 pivoted to a rod 2 which is moved longitudinally to project the bolts through holes 6 in a plate 1. The rod 2 slides in brackets 3 and a casing 7 on the plate 1 and is operated by a removable handle through a link 9 to project or withdraw the bolts. The bolts are of U-shapoe. the limbs being curved as shown and pivoted to the rod by a pin 4.
Patent GB-379869-A (GB)
Title: Improvements in or relating to electric switches with arcextinction by the action ofself generated vapour
IPC: H01H33/55
Filed: 1931-09-15
Abstract: 379,869. High-tension switches. SIEMENS SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Sept. 15, 1931, No. 25888. Convention date, Sept. 22, 1930. [Class 38 (v).] In a switch of the type wherein the arc is extinguished by self-generated vapour derived from the switching liquid which may be oil or a semiconducting liquid e.g. water the switching liquid remains in the neighbourhood of the contacts only during the break. It may be introduced into the chamber at break and withdrawn afterwards or both contacts may be removed from the chamber or the chamber from the contacts after the arc has been extinguished. In this way a minimum of oil may be employed and when a semi-conducting liquid is used the insulating properties of the switch are improved.
Patent GB-787289-A (GB)
Title: Improvements relating to watering or drinking appliances for animals
IPC: A01K39/022
Filed: 1955-09-10
Abstract: 787,289. Drinking appliances for animals. SPENCER, T. H. N. Sept. 4, 1956 [Sept. 10, 1955], No. 25948/55. Class 5(2). A drinking device for animals comprises a supporting bracket 6 from the front of which a trough 24/25 is pivotally suspended, the rear end of the trough, which is shallower than the front, extending behind the pivot spindle 22 and carrying a pad 29 of resilient material, the pad being situated below a nozzle 19 on the water inlet pipe 7 which forms part of the bracket 6 ; the weight of water supplied to the trough causes the front of the trough to drop and so brings the pad into contact with the water inlet to close the supply. The trough is pivoted at 22 on a frame 8 forming part of the bracket and comprising bars 9 arranged triangularly, the frame carrying a cover 30 to obviate splashing. At the base of the water inlet pipe 7 may be fitted a plastic tube 27 narrower than the pipe and extending some way into it, to act as a sediment trap. The front of the trough may be either stepped at the base, to give depth, or extended laterally. The upper end of the water inlet pipe 7 is mounted by a threaded sleeve 14 on the wall 18 of a water container.
Patent GB-1477305-A (GB)
Title: Circuit for controlling the illumination of slide projector lamps
IPC: G03B21/00
Filed: 1973-05-31
Abstract: 1477305 Controlling the brightness of projector lamps ANIMATIC CO Ltd 29 May 1974 [31 May 1973] 25960/73 Heading H2H [Also in Divisions G2-G3] A circuit for controlling the illumination of a projector lamp comprises a triac 18 which controls the supply of A.C. to the lamp, a trigger signal generator 4, a ramp generator 16 and a frequency to voltage converter 3 which supplies a threshold voltage to the signal generator. As shown, the circuit is used to control the brightness of the lamp in each of two projectors by a manual control box 20. An oscillator 1 supplies an output to a Schmitt trigger 2 at a frequency which depends on the oscillator input voltage, i.e. on the position of a potentiometer VR1. The converter 3 therefore supplies a D.C. signal to the signal generators 4, 5 at a level dependent on the setting of the potentiometer. The ramp generators 16, 17 are connected to a Schmitt trigger 15 and a bridge rectifier 14 and generate sawtooth waveforms of opposite polarity. The triacs 18, 19 are fired in each half-cycle of the A.C. supply at the instant when the ramp voltage equals the threshold voltage and the circuit is arranged so that as the movement of the potentiometer VR1 progressively brightens one lamp the other lamp is progressively dimmed. The control box 20 also includes switches SW1, SW2 which are operated when the potentiometer slider reaches its extreme positions. When the switch SW1 is operated, a trigger circuit 6, pulse stretcher 10 and an amplifier 12 energize a relay RL1 which operates the slide change mechanism of the projector the lamp of which has been completely dimmed. Similarly, operation of the switch SW2 energizes the slide change mechanism of the other projector so that as one projector lamp is at maximum brightness, the other projector lamp is fully dimmed and the slide is changed. A tape recorder may be plugged into a socket SK1 and when a switch SW3 is moved to the "TAPE" position the programme recorded from the potentiometer may be played back to control the projectors.