baber/WOPTO huggingface dataset:
Patent GB-784341-A (GB)
Title: Improvements in and relating to gas turbine jet units
Inventor: JACOBSON JOHN WILLIAM
IPC: F02K1/16
Filed: 1955-04-07
Abstract: 784,341. Jet propulsion gas turbine plant. GENERAL ELECTRIC CO. April 7,1955, No. 10316/55. Class 110 (3). [Also in Group XXXV] In a control system for a jet engine, manual control of the exhaust area when reheat is not in operation is overridden by means responsive to engine temperature to prevent rise in temperature above a predetermined value at which the engine is maintained by the temperature responsive means when reheat is in operation. In Fig. 1 the main fuel supply to nozzles 5 of an aircraft jet engine 1 is automatically controlled by a centrifugal governor 10 which is responsive to engine speed and controls, through a fluid pressure system, Fig. 3 (not shown), a by-pass regulator 9 associated with a main fuel pump 7. The desired speed and hence thrust is selected by a main throttle lever 13 coupled to governor 10. Lever 13 also controls a variable area jet exhaust nozzle 26 through a cam 31, selsyn linkage 35, 38, thermionic valve relays 46, 47 and a reversible electric motor 27 so that exhaust nozzle area is decreased with increase in speed. Decrease in nozzle area is delayed until the end of any acceleration period by the opening, during acceleration, of contacts 141 associated with governor 10. Thermocouples 59 produce a voltage, dependent on turbine exhaust temperature, which controls thermionic valve relays 69, 70 through a chopper-type amplifier 60 so that when reheat is not in operation control of reversible motor 27 is overridden to prevent rise of temperature above a value determined by the setting of a potentiometer 61. Extreme position limit switches 54 and 56 are associated with the variable area exhaust nozzle. After reheat has been started by operation of a lever 23, auxiliary fuel supplied to reheat nozzles 18 is controlled by lever 23 operating a by-pass regulator 21 associated with a reheat fuel pump 20. If under these conditions the variable area nozzle has been opened to the maximum extent in an attempt to prevent rise in temperature above the predetermined maximum, limit switch 56 transfers control of temperature to a reversible motor 92 which adjusts reheat fuel regulator 21 through a differential gear 24 to maintain the engine at the predetermined temperature. Limit switches 99 and 100 are associated with motor 92. A potentiometer 79 may be varied automatically in dependence on turbine compressor inlet or discharge pressure. Governor 10 and reheat regulator 21 are also influenced by atmospheric or other pressure to provide altitude or other pressure compensation. Alternative forms of temperature detector, e.g. bimetallic and alternative detected temperature, e.g. turbine inlet, blade or tailpipe temperature, are referred to.
Patent GB-546072-A (GB)
Title: Improvements in and relating to voltage regulators
Filed: 1941-08-14
Abstract: 546,072. Automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 14, 1941, No. 10339. Convention date, Aug. 14, 1940. [Class 38 (iv)] Constant voltage at load circuit terminals 3 is maintained with varying load current or power factor or with varying voltage at supply terminals 1, by series connected capacity 5 and inductance 4 in shunt across the load circuit terminals, the inductance having a core member with an air gap bridged by portions 9 which quickly saturate and the condenser being chosen so that the slope of its volt-ampere characteristic is the same as that of the inductance after saturation is reached and over a range of the order of full load current. Current variations in this constant voltage shunt circuit or in the load circuit co-operate with series impedance 2 on the impedance of the supply source in producing a constant load circuit voltage. If the impedance 2 is constituted by an inductance similar to inductance 4 in parallel with a capacity with a characteristic of like slope constant current will be maintained with constant voltage. A transformer may supply the load and regulating circuits and its leakage impedance may co-operate in the regulation; the load circuit terminals may be connected through an adjustable ratio autotransformer. A resistance or other means for power dissipation may be included in the shunt circuit 4, 5 to prevent oscillation. Specification 501,209 is referred to.
Patent GB-955902-A (GB)
Title: Process for the production of water-soluble derivatives of tetracyclines
IPC: A61K31/65
Filed: 1962-03-19
Abstract: A water-soluble derivative of a tetracycline is prepared by treating an aqueous suspension of a tetracycline with formaldehyde at a pH value between 5 and 9. The tetracycline may be tetracycline itself, chlorotetracycline, oxytetracycline or demethylchlorotetracycline. The formaldehyde may be added in aqueous solution, in gaseous form or as paraldehyde, and the soluble product may be separated by lyophilization or by precipitation with a mixture of water-miscible organic solvents.
Patent GB-1370275-A (GB)
Title: Implement-carrying vehcle
IPC: E02F3/76
Filed: 1973-03-05
Abstract: 1370275 Implement-carrying vehicle CATERPILLAR TRACTOR CO 5 March 1973 [6 March 1972] 10476/73 Heading ElF An implement-carrying vehicle 11 has an elongate body 12 having ground-engaging traction means 16 on either side, with an implement, such as a bulldozer blade 30, supported at one end of the vehicle on a mounting frame which includes an arm 34 extending along each side of the vehicle and pivotally connected thereto, implement actuating means 39 disposed inwardly of the traction means and supported on the vehicle by support means 42, and force-transmitting means, such as levers 47, pivotally connected at 50 to the vehicle at a lower level than the support means 42, operatively connecting the actuating means and the implement. The pivotal connection 50 of each lever 47 is to a bracket 51 secured to track frame 18 or to cross-member 19, forwardly of the support means 42, which is above and inwardly of the traction means. The blade 30 is connected to the levers 47 by linkages 54 and is pivotally connected to the support arms 34. Alternatively, Fig. 4 (not shown), the blade is angularly adjustable, being connected to a C-frame (60) by a universal joint (65) and by links (66) selectively connectible to brackets (67).
Patent GB-125441-A (GB)
Title: Improvements in or relating to Sights for Ordnance.
Inventor: SINCLAIR THOMAS CHARLES
IPC: F41G3/02
Filed: 1916-07-27
Abstract: 125,441. Sinclair, T. C. July 27, 1916. Sights.-Relates to sighting-devices of the kind described in Specification 16319/15, and consists in arranging the observing-instrument separate from the gun and in connecting it to the sight by flexible connexions so that the corrections for speed of target are automatically applied. In the construction shown in Fig. 1, the observing instrument has a ground-glass screen A at the focus of the object glass and a pointer B which can be moved vertically and transversely, to follow the image of the target, by screws H, F. The screws H, F also actuate hydraulic mechanism to adjust the sight, comprising pistons in cylinders K<2>, N which are connected by pipes L', 0' to corresponding cylinders M, P on the sight. In use, to apply the corrections due to speed of target, the target is followed by the pointer B for a definite time, preferably the time of flight of the projectile. The sight may be separately adjusted on its base for range and deflection, or these adjustments may be made by the observer by moving the pointer B in accordance with suitable range and deflexion scales, either before or after the observation for determining the lead.
Patent GB-1523103-A (GB)
Title: Bloced polyisocyanates formed from 4,4 - dilisocyanato - dicydlohexylmethane and an acetoacetic acid alkyl ester
IPC: C07C235/80
Filed: 1977-03-14
Abstract: 1523103 Cross-linking agents for polymers HOECHST AG 14 March 1977 [25 March 1976] 10668/77 Headings C3P C3R and C3B [Also in Division C2] Cross-linking agents for polymers have the Formula III wherein R is a C1-10 alkyl or dodecyl radical and R1 is an isocyanate or group. Examples illustrate the cross-linking of (1) epoxide resins based on bis-phenol A and epichlorohydrin, (2) unplasticized melamineformaldehyde resin, (3) castor-oil alkyd resin, and (4) a hydroxyethyl methacrylate-methyl methacrylate-2-ethyl-hexyl acrylate copolymer.
Patent GB-1018927-A (GB)
Title: Improvements in or relating to apparatus for assembling dispensing valve assemblies with containers
Inventor: JONES GERALD DOVASTON
IPC: B65B7/28
Filed: 1964-03-13
Abstract: 1,018,927. Assembling can heads on bodies. METAL BOX CO. Ltd. Dec. 10, 1964 [March 13, 1964], No. 10799/64. Heading B3J. An apparatus for assembling with containers 5, closure members 1 which include a valve assembly 6 and a curved dip tube 7, comprises a driven endless belt conveyer 8 and a rotating scroll 10 which moves the containers, stationary guides 11 and 12 along which the closure members 1 are moved by a rotating scroll 13, and a driven endless chain 15 carrying plates 17, each having a slot 18. The chain 15 diverges from the closure member conveyer and converges on the container conveyer so that the slotted plates 17 first engage the dip tube 7 near the valve assembly and then slide down the tube so that it is guided into the mouth of the container as the closure members converge on the containers.
Patent GB-108092-A (GB)
IPC: D03J1/14
Abstract: 108,092. Ingham, T. Nov. 30, 1916. Healds, threading.-To facilitate the drawing- in of warp threads, one or more screens are provided behind the threads to be operated upon to reveal their presence and situation to the operator. As shown, a screen A of sheet metal, wood, cardboard, &c. is adapted to be secured to the drawing-in frame, or to an automatic warp-thread selecting-device thereon, by means of lugs G or a projecting ledge at the base, and a part B is slidably mounted on the screen by a bar C passing through lugs E on the screen. The part B and the visible part of the screen A are uniformly coloured, preferably a dark olive green, and the hidden part of the screen is white. With the part B in the position shown, the screen is suited for drawing-in light-coloured warps, and, for dark warps, the part B is moved by nibs F or the bar C to uncover the white part of the screen. Interchangeable screens of different colours may be provided.
Patent GB-1399777-A (GB)
Title: Apparatus for rejecting radar signal noise
IPC: G01S7/32
Filed: 1973-03-06
Abstract: 1399777 Pulse radar KYORITSU DEMPA CO Ltd 6 March 1973 [4 May 1972] 10824/73 Heading H4D In a marine pulse radar, noise is eliminated by providing a variable-gain IF amplifier controlled by the rectified video level and by only extracting from the detected IF amplifier output those signals which are consistent in range over several range sweep periods. The noise is of the form of superposed white and random-process noise. The white noise is range dependent and is eliminated by the AGC. The raw video is passed to three parallel channels each containing a threshold device (#E, 2#E, 3#E respectively), a shift register and a lowpass filter (Fig. 4, not shown). The register is driven by range clock pulses during the maximum range sweep time. The outputs from the filters thus represent signals exceeding the three thresholds and when summed, the resultant represents the average D.C. level of the range dependent white noise. This is used to control the gain of amplifier 5 (Fig. 14) whose output is detected and fed to a wave form selecting circuit 10. This comprises three matched filters (e.g. auto- or cross-correlators or optimum filters) in parallel which are responsive only to target pulses of a shape expected in three range regions covering the maximum range sweep. The filters are enabled during the corresponding range regions and their outputs feed a band-pass filter via an OR gate (Fig. 8, not shown). Thus only pulses of the correct shape are passed to coincidence circuit 14 which comprises two cascaded shift registers whose outputs are connected to an AND gate along with the selecting circuit output (Fig. 10, not shown). Thus only pulses which are consistent in range over three radar pulses produce a valid output which passes to the radar display (e.g. a cathode-ray tube).
Patent GB-123475-A (GB)
Title: Improvements in or relating to Paper and like Folding Machines.
IPC: B65H45/14
Filed: 1918-07-02
Abstract: 123,475. Canadian American Machinery Co., (Toronto Type Foundry Co.) July 2, 1918. Folding paper.-Buckling folders are provided with a pair of folding-plates, one of which is adjustable to and from the other and also towards and from the folding-rolls. The plates are also specially formed and located in relation to the rolls. As shown, the lower plate g is adjustably fixed on the upper plate f by means of slots i<1> engaging bolts i having threaded nuts j engaging screwed holes in the plate f and lock-nuts j<1>. Washers j<11> of the required thickness and interchangeable are placed on the bolts between the plates. Slight adjustment may be made by slacking or tightening the bolts without removing the washers. The forward end of the plate f is grooved at f<11> to engage and deflect the sheet k as it is fed in between the folding-rolls c, d, and the plate g has a depending lip g<1> to form and support the buckle k<1> in the sheet, as shown, as it is folded between the rolls d, c. The forward edge of the plate f is in a plane joining the axes of the rolls c, e and the axes of the three rolls are in planes at an obtuse angle as shown.
Patent GB-1436822-A (GB)
Title: Supported films of intermetallic compositions
IPC: C22C27/04
Filed: 1974-03-12
Abstract: 1436822 Razor blades WESTERN ELECTRIC CO Inc 12 March 1974 [12 March 1973] 10854/74 Heading B4B [Also in Divisions C7 F2 and G2] A razor-blade cutting edge has deposited thereon, e.g. by sputtering or vapour deposition, a film of composition Mo 4-6 Ru 3  or W 2À4-3À6 Ru 2  and of thickness 300 angstroms-10 Ám. Deposition temperatures of 100-1000‹ C. are suitable under Ar, He or Ne using a sigma bulk-phase or particulate blended target of substantially the same composition as the desired film. The films have useful reflective, electrical and hardness properties.
Patent GB-494822-A (GB)
Title: Radio transmitting arrangements particularly for direction finding systems
IPC: G01S1/02
Filed: 1938-04-08
Abstract: 494,822. Directive wireless signalling. LORENZ AKT.-GES., C. April 8, 1938, No. 10859. Convention date, April 16, 1937. [Class 40 (v)] Relates to overlapping-beam systems for producing an equi-signal navigational track of the kind described in Specifications 405,727 and 431,929. According to the invention, the main or energized aerial E is used in combination with only one reflecting aerial R, Fig. 3, which is tuned or detuned by increasing or decreasing its length. When the reflecting aerial R is keyed at A, a relay T adds the extra length Fz to the dipole, thus giving it an inductive instead of a capacitive reactance to the working wavelength. The effect is to shift the radiated field from D1 to D, Fig. 2, giving an equi-signal course between the points P1, P2 which is free from " clocks," since there is only one keying control.
Patent GB-1030543-A (GB)
Title: Safety device
Inventor: COOKE BRIAN FREDERICK
IPC: G21F7/00
Filed: 1964-03-13
Abstract: 1,030,543. Checking entry and exit of individuals. NUCLEAR POWER PLANT CO. Ltd., and A.E.I.-JOHN THOMPSON NUCLEAR ENERGY CO. Ltd., [trading as NUCLEAR POWER GROUP]. March 10, 1965 [March 13, 1964], No. 10864/64. Heading G4T. To ensure evacuation of an enclosed space in a nuclear reactor before sealing it off and introducing irradiated material, the number of people passing through inlets and outlets are counted and compared and interlocking means prevent the space being sealed off if there is a difference in these numbers. The access opening is opened by a key which is held by a locking device as long as there is a difference between the inlet and outlet numbers. The inlets are automatically locked when the key is removed and the key can only be removed from the access opening when the latter is again locked. To limit the number of people in the space when turnstiles are used the inlet may be locked when the difference in the numbers equals a predetermined number. The turnstiles may be replaced by photo-electric counting devices.
Patent GB-1244133-A (GB)
Title: Improvements in or relating to fabric-reinforced tyres
IPC: B60C9/18
Filed: 1969-02-28
Abstract: 1,244,133. Vehicle tyres. PNEUMATIQUES CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER-COLOMBES. 28 Feb., 1969 [4 March, 1968], No. 10928/69. Heading B7C. A tyre having a tread formed by circumferential ribs and grooves, has the tread reinforced by at least one fabric layer 14, 15 which undulates in the axial direction and extends into the ribs, at least the bases of the tread grooves 16 having been coated prior to moulding with a layer 17 of a rubbery mixture which resists flow at the moulding temperature and pressure and hence minimizes exposure of the fabric layer at the bases of the grooves. The mixture may comprise 70 to 110 parts by weight of carbon black to 100 parts by weight of natural or butadiene-styrene rubber. Alternatively, the layer may comprise partly a fully vulcanized rubber. The coating layer may be 1 mm. thick and may extend over the entire tread surface. In a modification, the reinforcement comprises circumferential strips laid sideby-side.
Patent GB-354747-A (GB)
Title: Improvements in articulated rail motor coach units
IPC: B61D3/10
Filed: 1930-04-07
Abstract: 354,747. Articulated rail vehicles. ARMSTRONG WHITWORTH & CO. (ENGINEERS), Ltd., SIR W. G. and IONIDES, P. D., 22, Great Smith Street, London. April 7, 1930, No. 11034. [Class 79 (iii).] In articulated rails unit, such as composite trains, the power generating mechanism is housed in a separate coach one or each end of which and the end of an adjacent coach are pivotally mounted on a common bogie. In a three coach unit, Fig. 1, the power or motor coach B is supported upon bogies 1, to which the passenger coaches A are also articulated, preferably upon the same pivots as the power coach. In Fig. 3, two power coaches B are connected together by a common bogie 8 as well as to passenger coaches A by bogies 1. The drive may be through the power coach bogies or through the bogies or axles supporting the remote ends of the passenger coaches. The Provisional Specification refers to a central power coach housing, an internal-combustion power generator with electrical, mechanical or other transmission.
Patent GB-333270-A (GB)
Title: Improvements in and relating to wireless telephony and telegraphy
IPC: H01F21/12
Filed: 1929-04-10
Abstract: 333,270. Chapman, L. A. April 10, 1929. Inductances provided with switching means, the coils being in parallel on the lower range, are associated with a three-way switch which may be connected to a symmetrical point on the inductance for both ranges, the coils when working on the higher wave range having two end effects produced by the disconnection of one section of the inductance. As shown, Fig. 2, in the long wave position of the switch, the short wave sections a, d are left on open circuit at the ends of the long wave sections, b, c.
Patent GB-738684-A (GB)
Title: Control arrangement for endless belt conveyors
Inventor: HAAS EDWIN
IPC: B65G60/00
Filed: 1953-04-22
Abstract: 738,684. Endless conveyers; feeding skip hoists. SKIP COMPAGNIE GES. April 22, 1953, No. 11141/53. Classes 78 (1) and 78 (4). In a control for the belt-loading of skips in skip-winding installations feeler devices 5A, 5B responsive to the height of a load on the belt are operable when the belt is fully loaded to change the belt speed from a slow charging speed to a fast emptying speed to deliver into the skip 4A, and vice versa when unloaded, the feeler devices also controlling a device to prevent charging of the belt while it is emptying. As shown, two skip-feeding arrangements denoted by the suffixes A, B, respectively, are fed from a common hopper 1, the two feed conveyers 3A, 3B being side by side to feed material from the hopper in measured batches alternately to two skips in a double shaft. Switches SKA, SKB in the respective skip shafts close only when a skip is correctly located to receive material from the corresponding conveyer belt. Slides 2A, 2B cut off the respective feeds from the hopper 1 when actuated by respective fluid actuators 6A, 6B, there being a mechanical coupling between the two slides such that when one closes the other opens. When belt 3A is fully charged at a slow speed the feeler flap 5A is raised by the material to place contact a in circuit with a contact r of flap 5B and electromagnetic valve EVA to close slide 2A. A circuit previously completed through contacts r of flap 5A, switch SchA and an electromagnetic switch operating the motor 7A to drive the belt 3A at its charging speed is now broken causing belt 3A to stop and a further contact a of flap 5A is in a circuit including switch SchA, switch SKA and a delay relay for actuating another electromagnetic switch to re-start motor 7A at a faster speed to deliver the material on belt 3A into the skip 4A. The delay relay prevents switching on the motor 7A before skip 4A is correctly located in position to receive the material. The circuit arrangement for the two feeding arrangemets is such that they operate alternately until hopper 1 is nearly empty. To prevent hopper 1 becoming empty and delivering an undersized charge the belts are stopped when the level of material in the hopper falls below switch TS2 and remain stopped until the level of material rises above a switch TS3. In another embodiment, Fig. 4, hopper 1 is replaced by a continuous feed conveyer 10 and a flap 11 is provided to detect an interruption in the supply of material from conveyer 10, and thereby stop the belts. In a further embodiment (not shown) a tippler replaces the hopper 1 and has a switch which normally prevents the belts from being run at charging speed but operates during the cycle of the tippler to start the belts. The flaps 5A, 5B and the level switches TS2, TS3 may be replaced by photo-cells operating relays.
Patent GB-797321-A (GB)
Title: Improvements in the hardening of photographic gelatin compositions
IPC: C07D203/20
Filed: 1956-04-12
Abstract: Gelatine is hardened by incorporating therein a bisaziridinecarboxamide.  The latter may have either of the formulae: <FORM:0797321/V/1> (where n is a positive integer from 2 to 10) or <FORM:0797321/V/2> where R is an alkyl or alkoxy group (such as a methoxy group in the 3-position to the biphenyl link), or it may be toluene-2 : 4-bis (1- aziridinecarboxamide).  U.S.A. Specifications 2,327,760 and 2,390,165 are referred to.