baber/WOPTO huggingface dataset:
Patent GB-827477-A (GB)
Title: Fuel control system for a gas turbine engine
IPC: G05D23/22
Filed: 1956-06-19
Abstract: 827,477. Automatic temperature control systems. UNITED AIRCRAFT CORPORATION. June 19, 1956 [June 21, 1955], No. 18927/56. Class 38 (4). In a system wherein the flow of fuel from a jet 20 into a combustion chamber 18 of a turbine engine is controlled in accordance with the temperature in a tailpipe by a thermocouple 22, the amplifier 26, into which a signal depending on the difference between the thermocouple output and a reference voltage 24 is fed, incorporates a dual feedback circuit comprising resistors 48 and 50 in parallel with a rectifier 56 and a low resistance 52 whereby the amount of feedback when the temperature signal is on one side of the predetermined datum varies from that on the other and the system sensitivity is in consequence similarly varied. This arrangement in conjunction with anticipation condenser 58, prevents overshooting during starting and produces a characteristic as shown in Fig. 5. The dotted curve 66 indicates the effect of the condenser. A solenoid switch 34 is actuated by a generator 32 coupled to the turbine shaft at 60% of the desired speed. Condenser 54 assists condenser 58 during starting but allows 58 to be of smaller capacity and thus reduces hunting during normal running. In a modification described with reference to Fig. 3 (not shown) a connection to earth through a rectifier bleeds the unwanted feedback signal on one side of the datum. Specification 827,476 is referred to.
Patent GB-218124-A (GB)
Title: Improvements in and relating to oiling devices
IPC: F16N25/00
Filed: 1923-07-23
Abstract: 218,124. Bolger, E. J. July 23, 1923. Gravity-feed lubricators.- Lubricant is supplied to a number of feed pipes 12, 20 connected respectively to horizontal pipes 1, 2 which communicate by a pipe 3, from a tank 22 connected to the pipe 2, the flow through the feed pipes being controlled by valves connected to crank shafts 17, 18 mounted in the pipes 1, 2. The two shafts 17, 18 are interconnected by a link 21 passing through a the pipe 3 and may be operated manually by a handle 25 or mechanically by a pawl-and-ratchet device 26, 28, 31 operated by a cam 27 on a shaft 10 to be lubricated. The pipes 12, 20 are in lengths adjustably connected by couplings 13.
Patent GB-242699-A (GB)
Title: Improvements in electromagnetic bells
IPC: G10K1/064
Filed: 1924-08-11
Abstract: 242,699. Alexander, A. E., (Signal Engineering & Manufacturing Co.). Aug. 11, 1924. Bell cases or covers; bell-operating mechanism, electric; bell sounding - members, supports for. - An alternating-current bell of the solenoid and plunger type is arranged to operate as a single-stroke bell by making the magnetic circuit asymmetrical so that a lateral pull is exerted upon the plunger causing a frictional braking action upon its reciprocatory movement. In the bell shown, which is generally similar to the construction shown in Specification 220,940 and comprises a casting 28 which serves as a magnetic yoke for the solenoid 24, a guide and support for the plunger 32 and a support for the sounding member 33, the magnetic circuit is made asymmetrical by means of non-magnetic, e.g. fibre, members 50, 51 fitted into recesses in the yoke. The plunger 28 is of square cross-section and is built up of rectangular laminations of silicon steel. Specification 242,698 is referred to.
Patent GB-771799-A (GB)
Title: Improvements in or relating to ionisation manometers
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H01J41/06
Filed: 1952-07-29
Abstract: 771,799. Cold-cathode tubes. STANDARD TELEPHONES & CABLES, Ltd. July 29, 1952, No. 19122/52. Addition to 678,695. Class 39(1). In a magnetron type of ionization manometer tube as disclosed in the parent Specification and comprising a wire anode electrode surrounded by a cylindrical cold cathode electrode, the anode is supported in tension at each end by insulating means comprising two insulating portions separated by a guard electrode so that the guard electrode is in series with the leakage path from anode to cathode across the said insulating means. The tube shown comprises an envelope 1 having tubulations 2 and 3 for communication with the system under test. A cylindrical cathode 4 of non-magnetic material is provided with centrally apertured transverse baffles 5 and cylindrical guard rings 8 of the same diameter as the cathode are supported from the ends of the cathode by glass beads 9. A tungsten wire anode 10 is supported between insulating washers 11 and 12 secured to the respective guard electrodes 8, a spring support 13 being provided at one end to maintain the wire in tension. A rigid support 14 provided at the other end of the anode wire is connected to a lead-in wire 15. A lead-in wire 6 is connected to the cathode 4 at 7 and a wire 16 is connected to one of the guard electrodes 8, an internal glass shrouded lead 17, indicated by dotted lines in the drawing serving to connect the two guard electrodes together. In an alternative construction, cylindrical guard electrodes of smaller diameter than the cathode surround the anode wire at either end within the cathode and provide supports for insulating washers between which the anode is held in tension, the guard electrodes being located with respect to the cathode cylinder by further insulating washers which may also locate the cathode with respect to the envelope wall. The tube is surrounded by a solenoid (not shown) and curves are given to show the variation of anode' current with the D.C. magnetic field strength for different gas pressures. The tube may be connected in the circuit described in the parent Specification or preferably in the circuit described in Specification 771,800 [Group XXXVI], in which an alternating magnetic field is superimposed on the steady magnetic field. In either arrangement a load resistor and a source of supply voltage are connected in series between the anode and cathode electrodes and the guard electrodes are connected to that end of the load resistor connected to the said source.
Patent GB-975913-A (GB)
Title: Cross-flow blower
IPC: F04D17/04
Filed: 1961-05-26
Abstract: 975,913. Transverse-flow blowers. B. ECK. May 26, 1961 [May 28, 1960], No. 19134/61. Heading F1C. In a tranverse-flow blower, a blade cascade 3, Fig. 7, forming an extension of a diffuser wall 2 is provided between the diffuser wall and the rotor 1. A return flow through the cascade from the diffuser to the rotor occurs as shown by arrows. This reduces noise and removes the boundary layer from the flow through the diffuser, thereby permitting the use of a large diffuser angle. The return flow also stabilizes the position of the free vortex V, preventing it from moving towards the centre of the rotor at low rates of flow, whereby unstable operation of the blower is prevented. A partition 4 separates the return flow from the primary flow in the suction chamber of the blower. Regulation of the blower can be effected by adjusting the position of a plate 7 for blanking off the cascade 3, by moving the cascade in the direction of its axis to vary its distance from the rotor, or by tilting the plate 4 about a pivot 15. For the same purpose, the cascade 3 may be arranged to be pivoted about a point in its plane, or the individual blades of the cascade may be pivotable. The axis of the cascade may be curved instead of straight. In the embodiment shown in Fig. 8, the partition 8 is pivoted so that it is automatically adjusted, against the action of a spring 21, by the fluid forces acting on it.
Patent GB-680735-A (GB)
Title: Improvements relating to a fowl house or fold
Inventor: WATSON JOHN HERBERT
IPC: A01K31/22
Filed: 1950-08-01
Abstract: 680,735. Poultry houses. MATTERSON, HUXLEY & WATSON, Ltd. July 19, 1951 [Aug. 1, 1950], No. 19160/50. Class 5(ii) Fowl house walls and folds consist of L- shaped horizontally-corrugated metal sheets 21, 22 bolted at the overlapping ends. Corrugated roof-sheets are supported by and hinged to transverse frame members. A central roof panel of wire-mesh may be provided, and a corrugated cross-partition separate the resting and perch end of the house from that containing the feeding and drinking troughs. The partition may be. provided with a door or folding portions. Corner strengtheners, handles, and cords for retaining the roof sections in either open or closed position may be fitted.
Patent GB-1418451-A (GB)
Title: Process for producing itaconic acid and derivatives thereof
IPC: C07C69/00
Filed: 1974-05-01
Abstract: 1418451 ltaconic acid and derivatives SNAMPROGETTI SpA 1 May 1974 [9 May 1973] 19195/74 Heading C2C Compounds of formula  wherein R and R<SP>1</SP> are hydrogen atoms, a hydrocarbon radical, and either each of X and X<SP>1</SP>, which can be the same or different is -CN, -COOR<SP>2</SP>, -COOM, or -CONH 2  where M is a monovalent metal atom or represents part of a metal atom of valency at least 2 and R<SP>2</SP> is a hydrogen atom or a hydrocarbon radical, or X and X<SP>1</SP> represent a divalent radical and with the two carbon atoms attached thereto form a heterocyclic ring with five atoms, are prepared by reacting formaldehyde or a precursor therefor with a compound An example describes the preparation of potassium itaconate by reacting diethyl succinate with trioxane in the presence of a tert.-butanol solution of potassium tert.-butanolate.
Patent GB-221322-A (GB)
Title: Improvements in or relating to electric distribution systems
Filed: 1923-07-27
Abstract: 221,322. Electrical Improvements, Ltd., and Beard, J. R. July 27, 1923. Protective arrangements.-In a duplicate supply substation in an electric distribution system, in order to reduce the number of circuit-breakers and to improve the protection, which may be of the. Merz-Price type, the usual substation bus-bar is dispensed with and the incoming feeders are connected together by a high-tension circuitbreaker, while the outgoing low-tension feeders are connected, through one or more transformers and through fuses or switches of comparatively 1 low rupturing capacity, to the opposite sides of the high-tension switch. As shown in Fig. 1, applied to a sub-station A receiving power from duplicate feeders B, B<1> from similar substations A<1>, A<2> and supplying low-tension power from duplicate transformers E, E<1>, the two feeders are connected together through the high-tension circuit-breaker C and are also respectively connected through fuses D, D<1> to the two transformers E, E<1>. Low-tension circuit-breakers F, F<1> are provided in the low-tension supply circuits. Protection is obtained by current transformers G, H, G', H<1>, located where shown in the substation and normally balancing against similarly located current transformers in the other two stations. Thus, feeder B is protected by means of a pilot circuit controlled from four current transformers respectively at the points G, H in the substation A and the corresponding points G, H in the substation A<1>, the circuit-breaker C and the fuse D together with the corresponding apparatus in the substation A<1> being included in the protection. Where duplicate transformer supply is not needed, a two-way switch, which may automatically change-over on failure of the consumers supply, may be used to connect the transformer through one of two fuses to the high-tension feeders. In the arrangement shown in Fig. 3, a single transformer E and a single fuse D are employed in conjunction with the two-way switch J. A single current-transformer G, G<2> replaces the transformers G, G<1> of Fig. 1 and this transformer is connected up by means of the changeover switch K interlocked with the two-way switch J, to one only of the pilot wire circuits L, L<1> viz. that protecting the feeder section to which the transformer E is connected through the switch J.
Patent GB-1018667-A (GB)
Title: Production of oxytetracycline
IPC: C12P29/00
Filed: 1963-05-15
Abstract: Oxytetracycline is produced by fermenting a nutrient broth under aerobic conditions at 22-30 DEG  C. by the mutant Streptomyces alboflavus M-108-OX (NCIB No. 9453; ATCC No. 15388) and isolating the oxytetracycline formed, preferably by precipitation as a complex with N,N1-dibenzyl-ethylenediamine.
Patent GB-1329172-A (GB)
Title: Devices for securing cylinders in supports
IPC: G01M1/16
Filed: 1971-06-08
Abstract: 1329172 Securing on shafts VERENIGDE MACHINEFABRIEKEN NV 8 June 1971 [8 June 1970] 19325/71 Heading F2U [Also in Division G1] A device for determining the unbalance and eccentricity of a non-rigid thin-walled cylinder 8 has two frusto-conical resilient rims 1 coupled together by hub plates 2 and a tube 3 which have a rotational symmetry. In use pressure hoods 10 are tightened by nuts 9 against the rims, the annular hood edges 11 pressing the edges 7 of the rims inwardly, a cylinder 8 is slid over the rims, and then the hoods are removed allowing the resilience of the rims, preferably arising from radial slits 6, to grip the cylinder. The assembly so formed is then placed in a balancing stand, with axles 12 located in bearings, and rotated at high speed by directing air jets into the slits 6, the radial forces on the bearings being measured to determine the unbalance and eccentricity of the cylinder.
Patent GB-415556-A (GB)
Title: Improvements in electric-arc welding
IPC: B23K35/38
Filed: 1933-07-07
Abstract: 415,556. Uniting by fusion. KABUSHIKI KAISHA KAWASAKI ZOSENSHO, 14, 2-Chome, Higashi, Kawasaki Machi, Minatohigashi-ku Kobe, Japan. July 7, 1933, No. 19357. Convention date, Oct. 22, 1932. [Class 83 (iv).] In electric arc welding iron, copper, brass, aluminium or alloys thereof by an arc or arcs formed between one or more carbon electrodes 1 and the work 2, jets of steam are blown on to the electrodes either through a chamber 4 surrounding the electrode 1, Fig. 1, or from a sprayer 6, Fig. 3, so as to produce an atmosphere of water gas by chemical action with the electrode at the high temperature of the arc.
Patent GB-1486079-A (GB)
Title: Security papers
IPC: D21H21/42
Filed: 1976-04-26
Abstract: 1486079 Security paper; papermaking WIGGINS TEAPE Ltd 26 April 1976 [8 May 1975] 19391/75 Headings D2A and D2B [Also in Divisions B5 and B6] A security paper comprises two or more plies with transparent or translucent non-porous tape included between the or at least one pair of plies. The tape may carry a printed legend, in which case it is preferably made of a transparent or translucent, and optionally coloured or pigmented, plastics material e.g. a polyester. The paper may be made by feeding a transparent or translucent non- porous tape between two webs formed for example, on a twin wire papermaking machine, pressing the webs together, and drying the married webs. One or both surfaces of the webs may be coated with a binder such as starch before the pressing stage.
Patent GB-1128241-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B9/02
Filed: 1966-05-03
Abstract: 1,128,241. Knitting-machines. VYZKUMNY A VYVOJOVY USTAV ZAVODU VSEOBECNEHO STROJIRENSTVI. 3 May, 1966 [4 May, 1965], No, ,19411/66. Heading D1C. In a circular knitting machine a needle can be placed in four operative positions I-IV and one inoperative position. In operation a pattern control rotates a multi-tracked cam 14 through a cable and pawl and ratchet so that a selected lever 9, 10, 11 or 12 lifts the pivot 15 of a lever 8 to lift a pin 5 to remove the needle, the amount of rotation, of the cam 14 determining the position I-IV. A separate similar arrangement, fig. 6, shows the apparatus for selecting between operative and inoperative positions. Adjusting screws, 17, determine the upper limit position of the lever 8 and hence the positions I-IV.
Patent GB-436758-A (GB)
Title: Improvements relating to safety razors
IPC: B26B21/30
Filed: 1934-07-02
Abstract: 436,758. Safety razors. MYATT & CO., Ltd., W. J., and POSTANS, A. J., Argent Works, Frederick Street, Birmingham. July 2, 1934, No. 19441. [Class 30] In razors of the type having a pivoted clamp d, the clamp is pivoted to the base a by means of side flanges d<1> and a pin e, and is pressed upon the blade by a lever m pivoted on the upper end of the handle h. The clamp and lever are formed with inclined surfaces k, n respectively. The surface k ends in a stop l about half way along the rear of the clamp. The blade is located by means of diamond-shape projections c.
Patent GB-793806-A (GB)
Title: Improvements in or relating to optical absorptiometers
Inventor: BROWN LEONARD HILDERSLEY
IPC: G01N21/25
Filed: 1955-07-05
Abstract: 793,806. Photometric apparatus. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 5, 1956 [July 5, 1955]. No. 19462/55. Class 97(1) [Also in Group XL(b)] In an optical absorptiometer, see the Figure accompanying the Provisional. Specification, light beam 3 is directed as shown by rhombs 1, 2 successively through standard and sample solution chambers 7, 8 to detector 5; the two-rhomb system is rotatable about axis 6. Pluralities of standard and sample cells may be arranged in the circular locus of portion 3a. Rhomb 2 may be omitted, the light source being mounted on the axis of portion 3a and arranged to rotate about axis 6, slip rings providing current to the source.
Patent GB-404221-A (GB)
Title: An improved method and means for ensuring the delivery of predetermined quantities of material to contamers
IPC: G01G13/00
Filed: 1933-07-10
Abstract: 404,221. Automatic-feed weighers. DODDS, E. M., Broomfield, Swiss Avenue, Watford, Hertfordshire, and ANGLOAMERICAN OIL CO., Ltd., 36, Queen Anne's Gate, London. July 10, 1933, No. 19489. [Class 143.] In a method of ensuring the delivery of predetermined quantities of material to containers and allowing for the tare, the empty container is placed upon the platform of a weighing mechanism thereby depressing the platform, after, during, or before which a controlling device is released for a sufficient time to enable it to assume automatically a position such that the movement permitted to the weighing mechanism thereafter prior to the automatic cutting off of the supply of material, will correspond to the quantity of material it is desired to deliver. A poise 6, Fig. 3, is set on a beam 5 according to the desired predetermined weight and the empty receptacle is placed on the platform. The beam rises a corresponding amount carrying with it a looselymounted permanent magnet 17. The operator presses a button 22 connected to a clamp 19 and liberates a controlling device in the form of a balanced contact lever 10 which is attracted into contact with the magnet 17. When the movement has ceased, the contact lever is again clamped by release of the button 22. The operator now raises a valve lever 35 to admit the material to the receptacle, the top of the valve plunger closing contacts 41 to complete a circuit through a holding solenoid 40 and through a spring contact 30 carried by the lever 10. When the weight of material accumulating in the receptacle reaches the predetermined amount the rise of the beam 5 causes the top of the magnet 17 to raise the spring contact 30 and break the circuit of the solenoid whereupon the valve descends to cut off the feed. The clamp 19 instead of being operated manually, may be operated by a solenoid energized by a switch associated with the valve lever 35. The clamp 19 and valve lever 35 may be controlled automatically by a delay action device adapted to close two circuits in succession, the delay action device being rendered operative by a turn table device actuated by the passage of the empty receptacle to the weighing platform. In a modification where the magnet and contact lever are dispensed with, the beam 5, Fig. 8, carries a spring-pressed clamping rod 54 holding a vertically-slidable rod 53. After the beam has risen under the weight of an empty container, the operator presses a button 58 so as to retract the rod 54 and allow the rod 53 to descend on to a fixed plate 52. The button is then released to clamp the rod to the beam and the feed of material is started as described above. When the requisite quantity has entered the receptacle the top of the rod 52 opens a spring contact to effect the cut off as previously described.
Patent GB-1219656-A (GB)
Title: Improvements in or relating to fluid-transfer arms
IPC: F16L27/08
Filed: 1968-04-25
Abstract: 1,219,656. Counterbalancing mechanisms; liquid cargoes. FMC CORP. 25 April, 1968 [9 May, 1967], No. 19552/68. Headings B8B and B8E. A balancing and locking apparatus for a fluid material conveying conduit 14 pivotal about a horizontal axis, comprises a spring-loaded arm 44 balancing the weight of the conduit, and a locking mechanism 42 operable by a handle 86 to lock the conduit 14 in any position of inclination. The arm 44 pivotally mounted through an adjustable torsion spring to a fixed bracket 46, comprises a straight portion 58 engageable with a roller on the conduit to balance the weight of the conduit and an angled portion 60 engageable with the roller to return the conduit to its upper stowed position. A cam 80 is operable through links 82, 84 and the handle 86 to lock the arm 44 to the conduit by wedge action, the force of which is adjustable by varying the position of the handle bracket 88 along the conduit 14. A further handle 104 and linkage 100, 102 adjacent the locking machine is operable to control a flow valve V in the conduit 14.
Patent GB-1304593-A (GB)
IPC: H05B33/26
Filed: 1970-04-23
Abstract: 1304593 Electroluminescence INTEL CORP 23 April 1970 [25 April 1969] 19629/70 Heading C4S [Also in Division H1] An ohmic contact to a layer of N type zinc sulphide, or a mixture thereof with another wide band gap material such as cadmium sulphide, consists of a layer including cadmium or zinc on a surface region having a net donor density of at least 10<SP>18</SP>/c.c. It is made by heating the cadmium or zinc in contact with the layer in the presence of a donor impurity which may be in the surface or incorporated in it during the heating. Suitable donors are indium, gallium, aluminium, chlorine, bromine and iodine. Typically an N type zinc sulphide body doped with 10<SP>19</SP> atoms/c.c. of aluminium (net donor concentration of 10<SP>17</SP>/c.c.) has its surface cleaved, abraded or etched for 5 minutes at 50 C. in hydrochloric acid, and then scrubbed with indium-mercury amalgam or gallium. Then a slug of a specified alloy of cadmium and indium; cadmium and gallium; or zinc and indium is pressed or evaporated on the prepared surface and heated in argon for 1 minute at 350-450C. In a similar process using a cadmium slug it is believed that cadmium fills lattice vacancies at the surface thereby increasing the net donor concentration. Heating can alternatively be effected in vacuum or in sulphur vapour. Reference is made to light emission and devices emitting light at a variety of wavelengths in a colour variable multicolour display.