baber/WOPTO huggingface dataset:
Patent GB-1416967-A (GB)
Title: Compass systems
IPC: G01C19/34
Filed: 1973-07-20
Abstract: 1416967 Gyromagnetic compasses SPERRY RAND Ltd 15 July 1974 [20 July 1973] 34607/73 Heading G1C A compass system, e.g. a gyromagnetic compass system, for a vehicle comprises a two-degree-offreedom directional gyroscope 1 having inner and outer gimbals, which produces an electrical heading signal #m, vertical reference means 9 which provides pitch # and/or roll # signals, computer means 13 which derives from these signals #m, #, #, a signal Ec which represents the angle between the two gimbals that would exist if the spin axis of the gyroscope 1 were horizontal, and a comparator 16 which compares Ee with an output signal from a pick-off which measures the true gimbal angle Em, the comparator 16 producing an error signal Em-Ec which is applied to an erection system to adjust the spin axis substantially horizontal. Since the absolute angle of the gimbals is determined, full gimbal error correction may be effected by taking the corrected heading angle # I  from a digital computing circuit 19 and passing it to a digital processor 23. Further inputs to the processor 23 include a signal representative of the magnetic heading supplied by a flux valve 24, a bias correction on line 25, a latitude correction on line 26, and a meridian convergence correction on line 27. Outputs comprising a directional gyroscope heading signal on line 29 and a magnetically slaved heading signal on line 28 result, either one being used at any given instance. In a further embodiment, Fig. 2 (not shown) the output signals from the directional gyroscope 1 and the vertical reference means 9 are applied to the computer via an interface unit (37), the signal from the gyroscope 1 representative of the heading being derived from a differential resolver (7) to which a correction input signal, which is the difference between the true and indicated headings, is applied via a further interface unit (42). The system thus operates in a quasi-feedback mode.
Patent GB-487246-A (GB)
Title: Improvements in sparking plugs
IPC: H01T13/16
Filed: 1936-12-16
Abstract: 487,246. Sparking - plugs. LICHARZ, C. E., and BLACK, A. N. Dec. 16, 1936, No. 34609. [Class 7 (iv)] An annular spark-gap is formed between the head 4 of the central elec trode and the ring 5 mounted in the end of the casing. The electrodes are made of ar alloy of pure nickel anc electrolytic iron, with pure manganese added for strength and toughness The surfaces are coated with electrically de posited iridium. The central electrode is ir two parts united by ar internally-threaded sleeve 15. Transverse or longi tudinal ribs 15a are form. ed on the outside of the sleeve, and the inside is separated by an air-gap from the greater part o: the part 3b of the centra electrode. Materia known under the Regis tered Trade Mark " Mycalex " is used for the insulating-member 11. Cooling of the sleeve 15 is promoted by the provision of perforations 12.
Patent GB-1156729-A (GB)
Title: Priority Flow Divider Valve for Closed Center Hydraulic System.
IPC: F16K11/07
Filed: 1966-08-03
Abstract: 1,156,729. Power steering systems. INTERNATIONAL HARVESTER CO. 3 Aug., 1966 [6 Aug., 1965], No. 34729/66. Heading B7H. [Also in Divisions B8 and F2] A priority flow divider valve has a spool 30 slidable in a bore 28 to control flow of fluid pressure from two inlet passages 34, 36 to a priority outlet 37 connected to a steering valve 18 and two secondary outlet passages 40, 42 connected to an auxiliary circuit 24. The spool has an internal bore housing a spring 56 which biases the spool towards the end stop 50 and has at least one radial opening 62 in flats 76 formed on the end of a central land 68 to communicate fluid pressure in inlet passage 34 to the left-hand end chamber of the bore 28 at all positions of the spool. The inlet passage 34 has a restriction 44 and the inlet passage 36 communicate with the right-hand end chamber 54 of the bore 28 by means of passage 60. The spool is formed with three lands 66, 68, 70 spaced by grooves 72, 74 and is arranged in its right-hand rest position to connect inlet passage 34 with priority outlet 37 via the restriction between spool land 68 and land 92 and to connect inlet passage 36 via groove 74 to secondary outlet passage 42. Demand by the steering valve moves the spool into an intermediate position in which groove 72 communicates fluid pressure from inlet passage 34 to the priority outlet 37 due to the pressure drop in the outlet 37 being communicated to the left-hand end chamber of bore 28. The two secondary outlets 40, 42 are obstructed by lands 68, 70 and the priority outlet pressure is regulated by relief valve 46 connected to reservoir 12. When the supply pump exceeds the demands of the steering the pressure rise in chamber 54 moves the spool to the position shown to maintain restricted communication of the inlet passage 34 with the priority outlet 37 to supply its demands and in addition to connect inlet passage 36 with the secondary outlet passage 40 to allow the auxiliary circuit, e.g. a power lift circuit to be operated. When the steering valve 18 is closed the spool 30 moves back to its righthand rest position communicating pressure fluid from the inlet passage 36 to the auxiliary circuit by way of the secondary outlet passage 42.
Patent GB-835968-A (GB)
Title: Improvements relating to friction devices
IPC: F16D25/0638
Filed: 1957-11-08
Abstract: 835,968. Fluid-operated friction clutches; shaft couplings. LAMBERT BRAKE CORPORATION. Nov. 8, 1957 [April 15, 1957], No. 34828/57. Class 80 (2). A fluid-pressure engaged friction clutch has positive displacement pumping means operated by relative rotation of the driving and driven parts and means for regulating the fluid pressure generated by the pumping means applied to the engaging means. An input shaft 1 drivingly carries a power plate assembly 3 having a clutch drum 5 internally splined to receive clutch plates 8, and a hub 4 carrying a flanged bearing 6. The hub 4 also has rigidlyfixed thereon a three-lobe face cam 32 which actuates push-rods 30 carried in a splined hub 7 forming part of an output shaft 2, the splines receiving complementary clutch plates 9 and a backing plate 11. On relative rotation of the driving and driven elements the push-rods 30 reciprocate spring-loaded pistons 36 in cylinders 37 formed in a secondary disc member 12 keyed to the shaft 2. The cylinders 37 are connected by passageways 40, 41 containing spring-loaded inlet valves 40 with the body of oil 70 in which the clutch is immersed and by passageways 47, 49 containing delivery valves 48 to an annular chamber 18. The chamber 18 forms a cylinder for an annular actuator disc 19 which may be moved axially towards the backing plate 11 to engage the clutch by fluid pressure in the chamber. The engaging pressure of the disc 19 is augmented by camming balls 22 responsive to engaging drag on the disc 19. The disc 19 is urged towards the disengaging position by spring-loaded plungers 26 carried in the splined hub 7. The chamber 18 is connected by a drilling 56, circular groove 51, passageway 59 in a stationary ring 57, and pipe 61 with a manual control valve 62 which, when closed, allows pressure build-up in the chamber 18. Pressure in the chamber 18 generated by relative rotation of the clutch parts is limited by a spring-loaded relief valve lying in the plane of the delivery valve 48 but spaced 90 degrees therefrom. In a modification in which the clutch is not immersed in oil, the passage 41 is connected by means similar to those for passage 56 to a pipe leading to an oil tank, the relief valve is housed in the body of the valve 62, and these two valves discharge into the oil tank. The shaft 2 may be coupled to a shaft S of a tractor power take-off by an internally-splined adjusting sleeve 72 bearing between a washer 76 on the shaft 2 and an internally-splined thrust washer 75 through a flanged locknut 73 secured by a cotter 74.
Patent GB-487340-A (GB)
Title: Improvements relating to shutter mechanism for photographic cameras
IPC: G03B9/70
Filed: 1936-12-18
Abstract: 487,340. Photographic shutters. DECKEL, F., (trading as DECKEL, PRAZISIONSMECHANIK UND MASCHINENBAU, F.). Dec. 18, 1936, No. 34866. Convention date, Dec. 21, 1935. [Class 98 (i)] A locking member preventing actuation of the release member unless the shutter mechanism has been set or the setting member moved to the " Bulb " or " Time " position, is mounted inside the shutter casing. The master member 1 has a shallow recess opposite the detent 2 which allows a spring 3 to rock the detent arm 4 into the path of a nose 5 on the trigger 6. The timing lever 8 has a finger 10 resting on the setting ring 11 which has two recesses 12, 13 corresponding to the "B" and "T" settings. When the master member 1 is rotated so that the detent 2 engages notches 15, the arm 3 of the detent 2 is swung out of the path of the nose 4. Similarly when the ring is set for " B " or " T ", the end of lever 8 falls in one of the recesses 12, 13 and a finger 9 on the lever 8 moves the detent 2 out of the path of the nose 4.
Patent GB-522047-A (GB)
Title: Improvements in and relating to temperature control devices
IPC: H05B1/02
Filed: 1938-11-30
Abstract: 522,047. Thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 30, 1938, No. 34896. Convention date, Nov. 30, 1937. [Class 38 (v)] In a thermally operated switch for a heating circuit such as that in an electric iron, a resilient switch arm is engaged by a member carried by a bimetallic strip, and during the movement of the arm to operate the switch, relative movement occurs between the switch arm and the engaging member and produces a snap-action. Held to the sole plate 10 of an electric iron by a stud 31a are a bent member 16 into which is screwed a setting spindle 37 carrying an adjusting knob 38, a bent member 20 carrying two contact members 24, 25 on which are contacts 28 held together by the resilience of member 24, and a bimetallic strip 30 which carries a right angle member 32. Heating of the soleplate causes the bimetallic to bend until the member 32 engages and presses against an end 29 of the contact strip 24 until as shown in Fig. 3, slipping suddenly occurs when the member 32 slides a distance' h along the member 24, the end 29 moving up a distance v to open the contacts 28 with a snap action. The friction in this action eliminates vibration and chattering. Rotation of the setting spindle 37 which is limited by a member 39 engaging a stop 40, causes bending of the member 20 and consequent movement of the contact members 24, 25. Specification 144,767, [Class 38 (i)], is referred to.
Patent GB-656883-A (GB)
Title: Improvements in devices for stabilizing high tension direct current systems
IPC: G05F1/52
Filed: 1947-12-31
Abstract: 656,883. Automatic voltage control systems. NETTELAND, O. Dec. 31, 1947, No. 34988. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 31, 1947.] [Class 38 (iv)] [Also in Group XL (c)] The D.C. supply to an X-ray tube is stabilized by single valves in the positive and negative leads, the impedances of which are respectively a function of the voltage applied to the tube and the system supply voltage. As shown, Fig. 1, the voltage E of the X-ray tube is supplied from the source Uh through the stabilizing tubes T1, T2. The grid of T1 is energized from the common point of resistors R2, R3 and the D.C. amplifier F1 and the valve impedance varies inversely as Uh. The control grid of T2 is energized, through amplifier F2 from the potential divider R4, R5 across the stabilized voltage E. F2 comprises a symmetrical differential amplifier and may comprise, as in Fig. 3, valves T4, T5, T6 supplied from the source of constant potential Ek. Compensation for changes in load current is effected by the cathode resistor R1, Fig. 2. Manual control of the voltage across the X-ray tube may be effected by adjustment of the resistors PP1, R5. In order to provide a wide range of control, the gain of the output stage of F1 or F2 may be raised by the insertion of a valve in the anode circuit of the output valve. In a further modification, not shown, amplifier F2 may be adapted to extinguish the X-ray tube.
Patent GB-1099987-A (GB)
Title: Adjustable cam
IPC: F16H53/04
Filed: 1966-08-04
Abstract: 1,099,987. Cams. U.S. BAIRD CORPORATION. Aug. 4, 1966 [Feb. 23, 1966], No. 35017/66. Heading F2K. An adjustable cam comprises a hub 10 having a radial flange 14 to which cam sectors 42, 26 are adjustably clamped by means of cupshaped gears 84, 66 which are secured to the hub 10 by bolts 90, 70. To adjust the sector 42, say, a spigot 98 on a pinion 96 is inserted in an aperture 53a in the sector 42, the pinion 96 meshing teeth 82 on gear 84. After loosening the bolts 90, the pinion 96 is turned by means of an Allen wrench 102, thereby moving the sector 42 to a new circumferential position, and the bolts 90 re-tightened. Adjustment of the drop-off from the high radius dwell of cam sector 42 may be effected by adjusting a supplemental member 54 secured by bolts 58, 60 to the sector 42.
Patent GB-191946-A (GB)
Title: Improvements in gas-heated boilers
IPC: F24H1/38
Filed: 1921-12-30
Abstract: 191,946. Potterton, T. Dec. 30, 1921. Internally-fired boilers.-A gas-heated boiler of the type employing a saddle-shaped outer boiler a with a water-holding chamber b within, is provided with side flues c which are coterminous in width with the top flue d, and the flue d is provided with a central exit e for waste gases, guarded by longitudinal baffles f. Heat-absorbing lugs b<1> project from the inner section b and supporting lugs b<2> resting on ledges a'. Ridges h divert condensation products from falling on the burner. Water enters at the top of the outer section a and passes by an external pipe connection to the inner section b at l and emerges at the connection m.
Patent GB-463458-A (GB)
Title: Improvements in and relating to the treatment of paper mill and similar wastes
IPC: C02F1/52
Filed: 1935-12-18
Abstract: The process for treating paper mill or similar wastes containing esparto or other washings, described in the parent Specification, which process comprises the addition to the wastes of effluents containing oxidizing agents from other sections of the mill, is modified according to the present invention by the addition to the mixed wastes of materials capable of reacting to form a flocculent hydrate precipitate.  Such materials may comprise an alkali, such as calcium carbonate or chalky slurry, and a metallic salt, for example ferric sulphate, alum or ferric alum.  Caustic grout or sludge from the causticizing section of the plant, or liquid filtered therefrom, may serve as the alkali. Or such caustic sludge may be mixed with the sludge from the clarifiers used in the process and the sludge mixture filtered, the alkaline filtrate thereby obtained being returned to the initial mixture of wastes.
Patent GB-818614-A (GB)
Title: Indicating instruments
Inventor: BOGAN CHARLES J
IPC: G01C19/32
Filed: 1957-02-26
Abstract: 818,614. Artificial horizon instruments. SPERRY RAND CORPORATION. Feb. 26, 1957, No. 35088/58. Divided out of 818,613. Class 4. The subject-matter of this Specification is identical with that described in Specification 818,613 but the claims are directed more widely to an indicating instrument. Specification 776,578 also is referred to.
Patent GB-1018317-A (GB)
Title: Heterocyclic thiophosphorus acid esters
IPC: C07F9/58
Filed: 1964-08-27
Abstract: The invention comprises compounds of the formula <FORM:1018317/C2/1> wherein R is an alkyl, alkoxy or aryl radical, R1 is an alkyl or alkoxy radical, and n is 0 or 1. They may be obtained by reacting acids of the formula <FORM:1018317/C2/2> with halomethylpyridine derivatives of the formula <FORM:1018317/C2/3> The process is preferably carried out in the presence of inert organic solvents such as aromatic hydrocarbons, and low-boiling aliphatic ketones and nitriles.  The alkali metal or ammonium salts of the corresponding dithiophosphorus acids are preferably used.  The reaction may be carried out in a protective gas atmosphere.  The products have pesticidal properties and may be used as plant protection or pest control agents (see Division A5).ALSO:Pesticidal compositions comprise as active ingredient a compound of the general formula:- <FORM:1018317/A5-A6/1> wherein R is an alkyl, alkoxy or aryl radical, R1 is an alkyl or alkoxy radical, and n is 0 or 1 (see Division C2), together with a conventional solid or liquid diluent or carrier. The compounds of the above formula may be used in combination with each other or together with known insecticides and/or fertilizers. Specified liquid carriers are water (if necessary with commercial emulsifiers), alcohols, ketones and liquid hydrocarbons.
Patent GB-769093-A (GB)
Title: Improvements relating to processes for bonding polymerized substances to other materials
Inventor: DEAKIN STANLEY THOMAS
IPC: B32B27/00
Filed: 1953-12-17
Abstract: In a process of bonding a polymerized plastic material with a substance having a melting or decomposition temperature lower than the moulding temperature of the plastic, loose particles of the plastic are preformed by compression and to a surface of the preformed shape are applied and embedded by heating the plastic to its moulding temperature, particles of material having a higher melting point than the moulding temperature of the plastic, and thereafter the substance to be bonded is applied to the surface of the plastic.  Polytetrafluoroethylene may be bonded to rubber by spraying aluminium on to a surface of a compressed preformed shape of polytetrafluoroethylene, and further compressing the preformed shape when cold so as to embed the aluminium in the surface thereof.  The preformed shape is then heated to complete the moulding to the required shape, and thereafter the embedded aluminium may be removed by hydrochloric acid to leave a roughened surface to which unvulcanized or partially vulcanized rubber containing sulphur is secured by applying heat and pressure. Fully vulcanized rubber may, alternatively, be secured to the surface by an adhesive. Alternatively the aluminium may be left embedded in the surface of the plastic.  Instead of aluminium another metal or a non-metallic material such as nitro-cellulose or glass may be used.  The process may be applied to the manufacture of composite strip material comprising a layer of polytetrafluoroethylene or other plastic material bonded to a layer of rubber.
Patent GB-176885-A (GB)
Title: Improvements in machines for curling yarns
IPC: D02G1/00
Filed: 1920-12-15
Abstract: 176,885. Micklethwaite, B. D. Dec. 15, 1920. Yarns, curling.-In a machine for curling yarns the ends are led frcm a drum nr cheese through a stationary tension-device and then through a tension device on a carriage i mounted on guides so that it is forced away from the curling-spindle a by the pressure of the curled yarn, and is drawn back, thereby withdrawing a fresh supply from the bobbin or cheese l, when the curled yarn is wound upon the spindle. The carriage slides on wires h and the tension-device comprises rollers m, of which one or more are adjustable, and fixed bars n preferably provided with glass rods n'. The yarns are crossed over a bar o at the front of the carriage, and pass under a roller r carried in a support s to prevent ballooning. The stationary tension-device comprises a box or framework k with rollers k<1>, and imposes a greater tension on the yarns than that imposed by the carriage i. This tension device may be dispensed with and the supply bobbin braked. The machine may be stopped at any point of the traverse of the carriage by means of a rope t connected to the shipper-bar f, or means may be provided whereby the machine is automatically stopped when the carriage arrives at the rear end of its travel. For tender yarns the tension device k may be dispensed with and the carriage connected to an endless belt 2, Fig. 3, passing around rollers 3, 4, of which 4 is adjustably braked to regulate the tightness of the curl and 3 is provided with a pawl 6 to prevent the carriage from running back. When a sufficient quantity of yarn has been wound on the spindle it is severed and the end passed under a guide roller z and led to a collapsable swift on which it is wound in hank form. In the Provisional Specification it is stated that the tensioning- means on the carriage includes a pair of rollers of which one is pressed against the other by an adjustable spring, and that a bar or rod connected to a spring is released by the carriage when it arrives at the end of its travel and moves so as to disengage a pawl which holds the belt fork in the operative position.
Patent GB-885508-A (GB)
Title: Improvements in optical means for indicating or recording a path of movement
Inventor: NORMAN DONALD FREDERICK
IPC: G02B21/00
Filed: 1957-11-13
Abstract: 885,508. Optical pointers; mirror arrangements. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 13, 1959 [Nov. 13, 1957], No. 35354/57. Class 97(1). A movable optical reflecting system which can receive a spot of light from a fixed source and reflect it as a moving spot on to a fixed screen and comprises a pair of bodies having plane co-operating reflecting surfaces arranged in constant angular relationship to each other and to a common plane of reference so that the directions of incidence and reflection of the spot open and by one of these surfaces will lie in a plane orthogonal to the plane in which will lie the directions of incident and reflection of the spot upon, and by the other surface, the bodies being movably mounted so as to be constrained to translation without altering the angular relation of the reflecting surfaces to each other and to the plane of reference and so that certain movement corresponding with that of a moving element, operatively connected to one or both of the plane reflecting surfaces so that the or each surface participates in the movement of the element, will be split up into components and then recombined in the movement of the spot upon the screen. As shown in Fig. 1 the reflecting system may comprise two plane mirrors 1, 5 movable respectively in the Y plane and X plane so as to reflect, as a moving spot on a screen 4, a light spot projected on to mirror 1 by lamp 2 and lens 3. In this case, the moving spot traces out a resultant path. In order to trace out the actual path in a plane, the arrangement of Fig. 2 may be used, this arrangement comprising reflecting surfaces 9, 10, of which the surface 9 is carried by a table 7 movable in the Y direction while surface 10 is carried by a table 8 movable in the X direction on the table 7. The arrangement of Fig. 2 may be further modified by the two reflecting surfaces being carried by a single table 7 movable in both directions under the control, for example, of a pantograph linkage. Magnification or reduction may be provided by a lens system disposed between the moving mirrors and the fixed screen or the latter may be viewed through a magnifying lens system. One of the carriages or tables may carry a stylus which can move over a workpiece under inspection, as described in Specification 882,075. And, in a further form, the fixed screen may be replaced by a photographic film or plate. Specification 885,507 also is referred to.
Patent GB-352366-A (GB)
Title: Improvements in and relating to insulating tape
IPC: H01B3/04
Filed: 1930-11-24
Abstract: 352,366. Insulating tape. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Nov. 24, 1930, No. 35395. Convention date, Nov. 25, 1929. [Class 140.] Tape for electric insulation consists of a diagonally woven or bias-cut impregnated fabric a to which a layer of mica b is secured by an adhesive. A covering layer of fibrous material such as paper c may be provided, also secured by adhesive.