baber/WOPTO huggingface dataset:
Patent GB-903871-A (GB)
Title: Improvements in and relating to mine and like haulage systems and apparatus
Inventor: DIXON NORMAN HENRY PRICE
IPC: B65G47/51
Filed: 1959-11-10
Abstract: 903,871. Bunkering conveyers. CRAWLEY INDUSTRIAL PRODUCTS Ltd. Feb. 9, 1961 [Nov. 10, 1959], No. 38066/59. Classes 78 (1) and 78 (4). , A conveyer system for coal includes a bunkering unit comprising scraper-conveyers 2 having spill-plates 3 which divide the unit into separate bunkering channels any one of which can be fed from a conveyer 1 by suitable location of a deflector-plate 4. A driving unit 6 is provided at each side of the bunkering unit and driving- drums 7 each have an individually-controllable epicyclic gear or other clutch mechanism. The speed of any of the conveyers 2 may be controlled so that it holds and delivers coal to a transverse discharge conveyer 8 according to the rate at which the conveyer 8 can cope with the flow of coal, e.g. by loading into trucks. Alternatively, one or more of the conveyers 2 may be stopped if there is any delay in discharge from the conveyer 8.
Patent GB-1417667-A (GB)
Title: Fluid-operated timing device
IPC: F15B21/02
Filed: 1974-08-30
Abstract: 1417667 Valves SOC ANON DES ETABS JOUVENEL & CORDIER 30 Aug 1974 [31 Aug 1973] 38121/74 Heading F2V In a time-delayed switching valve when pressure is applied to an inlet P it is fed to a main chamber 1 and, via a variable throttle 8, to an auxiliary chamber 2 bounded by one force 4b of a piston 4 which moves in the main chamber. The area of the face 4a in the main chamber is less than 4b so that a pressure builds up in the auxiliary chamber the piston moves to the right against the loading of a spring 9. A closure member 6, rigidly connected to the piston, moves from the position shown in which a pressure outlet A is connected to exhaust E to a position in which the exhaust outlet is blocked and the inlet P is connected to the outlet A. When pressure at the inlet P is removed the valve resets automatically, urged by the spring 9. A check valve 10 prevents back flow from the outlet A to the inlet P and a by-pass 12 to the check valve prevents a reserve of pressure from remaining in the main chamber. A further check valve 11 provides a by-pass to the variable throttle 8 so that the piston can be re-set rapidly when the pressure at inlet P is removed.
Patent GB-979479-A (GB)
Title: Land mines adapted to be thrown or dropped onto the ground
IPC: F42B23/00
Filed: 1962-10-09
Abstract: 979,479. Land mines. ALSETEX SOC. ALSACIENNE D'ETUDES ET D'EXPLOITATION. Oct. 9, 1962 [Oct. 25, 1961], No. 38225/62. Heading F3A. A land mine which is to be thrown or dropped from a vehicle comprises an explosive charge 5 and a pressure-sensitive device (1, 2, 3, 4), the device being so arranged in the mine that, on impact with the ground, the force to which it is subjected is a function of its weight alone. The device as shown in Fig. 1 comprises two plates 1, 2 separated by a firing means 3 and a detonation relay 4 and is freely slidable in an axial passage 7 through the mine casing 6, the plates 1, 2 being of larger diameter than the passage and the overall height of the device being greater than the length of the passage. On impact with the ground, the device slides along the passage to take up the position shown in Fig. 1, with the plate 1 ready to receive a blow on its upper surface. In a second embodiment, Fig. 2, the mine casing is in two parts 11, 12, the part 12 being supported on the charge 13 by an elastic cushion 14, which takes up the shock of impact when the mine is dropped, to protect the sensitive device 10. In another arrangement the casing is closed and made of flexible material, the sensitive device comprising two pressure plates as in Fig. 1 and being slidable within the charge, a flexible shock-absorbing cushion being provided between one plate and the charge.
Patent GB-1013371-A (GB)
Title: Improvements in or relating to conductive films
Inventor: MCILHAGGER DAVID SHERWOOD
IPC: G01N27/12
Filed: 1960-11-08
Abstract: A first coating of a basic sulphate, formate or succinate is formed e.g. on glass or porcelain, and a conductive substance such as silver, copper, platinum or carbon is then applied by chemical deposition so as to become incorporated in the coating.  The coatings so produced have valuable electrical conductivity properties.ALSO:Coatings of basic stannic sulphate, or basic sulphates of aluminium, gallium, thorium, or titanium are produced on a surface by the method of homogeneous precipitation (i.e. slowly generating the precipitant by a homogeneous chemical reaction within the solution. In an example glass tubes are immersed in an acid solution of stannic chloride, ammonium sulphate and urea: the urea is slowly hydrolysed and precipitates the stannic sulphate in a dense form part of which adheres to the glass. The film so produced may if desired be removed from the glass by warming in ammonium sulphate-sodium hydroxide solution and used for humidity measurement purposes.ALSO:A conductive film formed of a basic salt by the process of precipitation from homogeneous solution on a surface in the presence of formate, succinate or sulphate anions incorporates a dispersed deposit of an electrically conductive substance.  By precipitation from homogeneous solution is meant slowly generating the precipitant by a homogeneous chemical reaction within the solution.  The films may be produced on glass or porcelain electric insulators.  In an example, glass tubes were cleaned in acid or alkali and immersed in an acid solution of stannic chloride containing ammonium sulphate and urea: the urea is slowly hydrolysed to ammonia and carbon dioxide and a basic stannic sulphate is precipitated on the glass.  Subsequently, silver, carbon, platinum or copper is chemically deposited on the film.
Patent GB-1137966-A (GB)
Title: Operating mechanism for a friction clutch
Inventor: LIVINGSTONE PETER DAVID
IPC: F16D48/02
Filed: 1966-08-26
Abstract: 1,137,966. Clutch control. FORD MOTOR CO. Ltd. 26 Aug., 1966, No. 38374/66. Heading F2L. A servo-assisted clutch release mechanism for a motor vehicle comprises a pneumatic servo cylinder 26 which acts on a clutch release lever 21 and is controlled by a valve 17 responsive to the pressure in an hydraulic line 16, 18 between a master cylinder (not shown) and a slave cylinder 15, the piston 19 of which also acts on the release lever. On depression of a clutch pedal (not shown) the pressure in the line 16, 18 rises and at a predetermined pressure a plunger 36, ball 38 and spool 39 of the valve 17 are moved down against the bias of a spring 43 to disconnect a servo part 32 from an exhaust part 33 and connect it to a pressure air supply part 31. As the valve spool 39 moves down a cylindrical part 44 blocks communication between the parts 32, 33 whilst a projection 47 of the spool opens a spring pressed valve 48 between the parts 31, 32. Whilst clutch pedal movement continues the pressure in the line 16, 18 holds the valve spool 39 down and the servo 26 moves the clutch release lever, but on termination of clutch pedal movement the movement of the piston 19 following the release lever 21 reduces the pressure in the line 16, 18 and the valve spool 39 moves up to cut the supply of pressure air to the servo and prevent further movement of the release lever. The servo may be operated by vacuum instead of compressed air.
Patent GB-952390-A (GB)
Title: Viscose regenerated cellulose fibr e and process for making same
IPC: D01F2/06
Filed: 1961-10-26
Abstract: 952,390. Viscose spinning. MITSUBISHI RAYON CO. Ltd. Oct. 26, 1961 [Oct. 27, 1960], No. 38425/61. Drawings to Specification. Heading B5B. Regenerated cellulose filaments of 0.5-30 denier are made by extruding a viscose of viscosity 100-500 poises and a salt point of 9-20 into a coagulating bath held at 10- 30 C. containing 0.01%-0.07% anhydrous zinc sulphate, 1-10% anhydrous sodium sulphate, and a limited concentration of sulphuric acid provided by the following equations: Minimum sulphuric acid concentration (%) by weight: = 0.33A + 0.02B - 5C + 0.13#D - 0.24 Maximum sulphuric acid concentration (%) by weight: = 0.38A + 0.02B + 2C + 0.27 #D - 0.5 where A = % NaOH in the viscose, B = % Na 2 SO 4  in the coagulating bath, C = % ZnSO 4  in the coagulating bath, and D is the single filament denier of the fibres to be spun. Preferably, viscose having a degree of polymerization of its cellulose of 400-500, a viscosity of 150-400 poises and a salt point of 12-16 is extruded into a coagulating bath containing 0.02%-0.04% anhydrous zinc sulphate, 1-5% anhydrous sodium sulphate, the sulphuric acid concentration being determined by the above equations. Alkali cellulose is preferably xanthalted with 40-50%, based on the cellulose, of carbon disulphide, to make the viscose. Suitably the coagulating bath temperature is 15-25- C. and the immersion length of the filaments is 20-50 cm. The tow of extruded filaments may be led through a spinning tube immersed in the coagulating bath and positioned near the spinneret and on withdrawal from the bath may be stretched in air or alternatively in a second bath containing less than 4% by weight of sulphuric acid and held at above 50 C. Filaments so made (which may be of very low denier) have a high Young's modulus in the wet state, low water swelling, a high strength, a high knot strength and good dyeability.
Patent GB-975946-A (GB)
Title: Improvements in or relating to water storage vessels in hot water supply systems
Inventor: BAGULEY DENNIS
IPC: F24H9/00
Filed: 1960-11-10
Abstract: 975,946. Hot-water boilers. J. BAGULEY'S SONS (1932) Ltd. Oct. 4, 1961 [Nov. 10, 1960], No. 38580/60. Heading F4A. A water storage cylinder 10, in which water for a secondary system is heated by a closed circuit primary water system including a water heater external to the cylinder and a calorifier within the cylinder, incorporates a continuous air and water conduit 15 for the initial filling and subsequent replenishment of the primary system from the secondary, the conduit extending out of the cylinder 10 to a valve 16, whereby foreign matter may be cleared from the conduit 15, e.g. by rodding, without dismantling the cylinder 10. The calorifier consists of an annular portion 11 closed at the bottom and opening at the top into a cylinder 12. A short open-ended pipe 18 extends up through the cylinder 12 from the space 11a enclosed by the annulus 11 and having its lower surface above the level of the upper primary circuit pipe 14. The conduit 15 has vents 17 and an open lower end. To fill the systems, water is fed into the secondary system and flows into the primary system through the conduit 15 whose valve 16 is left open until reached by the water level, the valve then being closed so that an air lock is formed in the space 11a and in the top portion of the calorifier. The conduit 15 then allows for expansion in the primary system due to heating.
Patent GB-891870-A (GB)
Title: Improvements in or relating to counter-current horizontal-axis concrete mixers
IPC: B28C5/24
Filed: 1960-11-11
Abstract: 891,870. Concrete mixers. RICHIER S. A. Nov. 11, 1960 [March 9, 1960], No. 38769/60. Class 86. A concrete mixer comprises a horizontal rotary drum 1 reversibly driven by a motor and reduction gear 5, 6 and divided into two compartments A, B by helical baffles 16. There are rotating stirrers 11 mounted on a shaft 7 and driven at constant speed by a motor 13, at the same angular velocity as that of the drum, so that when rotating in the same direction the stirrers are stationary relative to the drum. A hopper 20 is raised on a track 22 by a motor 21 and has compartments for cement, sand and coarse aggregate which are released through gates 23, 24, 25 respectively. Water is supplied by a metering device 17 to a sprinkler 18. In operation the drum is first rotated in the direction C and the stirrers 11 in the counter-direction D, and the hopper 20 hoisted to the solid line position, Fig. 1. Cement is released to the shoot 19. and mixed with water in compartment A to form a grout. Gate 24 is then opened to release sand which is mixed with the grout to form a mortar. On completion, the direction of rotation of the drum is reversed as at C<SP>1</SP> and the helical baffles 16 transfer the mortar from compartment A to compartment B. The hopper 20 is then raised to the chain-dotted line position, the gate 25 opened and coarse aggregate discharged into compartment A whence it is transferred by the helical baffles 16 to compartment B and mixed with the mortar. Finally the direction of rotation of the drum is again reversed whereupon the helical baffles 15 discharge the prepared concrete. In another embodiment, Fig. 4, the drum 1a rotates in one direction only and the stirrers 11 in counter-rotation thereto. There are two loading hoppers 20a, 20b, for sand and cement and for coarse aggregate respectively, the latter discharging direct into compartment B. Materials are transferred from A to B by baffles 32 and a tilting shoot 16a, which is connected by a rod 35 with another tilting shoot 30, the latter combining the functions of loading shoot for the coarse aggregate and of discharge shoot for the concrete. In a modification, Fig. 5, the shaft 7 carries stirring blades 11 and helical baffles 36 which in one direction of rotation of the shaft 7 direct the materials towards the stirrers 11 and in the other transfer them into the compartment B.
Patent GB-1031250-A (GB)
Title: Mode-suppression in klystrons
IPC: H03B9/04
Filed: 1963-08-22
Abstract: 1,031,250. Reflex klystrons. VARIAN ASSOCIATES. Aug. 22, 1963 [Sept. 28, 1962], No. 38803/65. Divided out of 1,031,249. Heading H1D. The subject matter is contained in the parent Specification, the claims being directed to the tunable high mode suppression wave trap coupled to the external cavity resonator of a klystron of the internal-external cavity resonator type.
Patent GB-1225054-A (GB)
Title: Limit switch
IPC: H03K17/90
Filed: 1968-08-14
Abstract: 1,225,054. Non-contact-making switches. R. KREEB, and A. OSTERTAG, [trading as RAFI RAIMUND FINSTERHOLZEL ELEKTROTECHNISCHE SPEZIALFABRIK]. 14 Aug., 1968 [10 Feb., 1968], No. 38842/68. Heading H3B. A limit switch comprises a magnetoresistive element and a magnetic structure which includes a permanent magnet, a change of resistance of the element being produced by relative movement between at least a part of the magnetic structure and the element. As shown in Fig. 1, a plastics casing 1 supports a magnetoresistive element 3 which is positioned in an air gap of a magnetic structure comprising a permanent magnet 5 and polepieces 6. The resistance of the element 3 is reduced by pressing a push-rod 2 against the action of a restoring string 8 so as to move a magnetic plate 7 towards the polepieces, the flux due to the permanent magnet being diverted from the air gap to the plate. In a modification, Fig. 5, the whole of the magnetic structure comprising a permanent magnet 32 and polepieces 33 is moved so as to introduce a fixed magnetoresistive element 3 into the air gap, the resistance being increased in this case. In a further modification, Fig. 3, both the magnetoresistive element 3 and the magnetic structure comprising polepieces 17 and a permanent magnet are fixed, the air gap flux being diverted by movement of a polarized structure 18 in the direction P<SP>1</SP>. By reversing the direction of polarization of the magnet 15 or one of the polarizing magnets of the structure 18, the switch is sensitive to movement of the structure 18 in the direction P. Springs are omitted in the Fig. 2 arrangement, restoration of the push-rod being effected by the repulsion between two magnets 11, 12. One magnet may be reversed, and an attractive force between the push-rod structure and the fixed structure having a magnetoresistive element 3 in its air gap is obtained. A quick-to-break action is obtained in the Fig. 4 arrangement in which a relay-like magnetic structure 21-25 with a permanent magnet core 20 is provided, the magnetoresistive element being located in an air gap which is formed whenever a rocker 24 is moved away from a stop 23. This gap is formed whenever push-rod 2 is depressed to an extent sufficient for the rocker to be moved by the action of a spring 28 on a pin 29. In all the foregoing embodiments an electronic amplifier system 30 may be accommodated in a chamber 4. Fig. 5 shows an adjustable stroke limit switch in which pressure on a push-rod against a spring 45 rotates a shaft 41 through a rack and pinion linkage 42, 43, 44. Rotation of the shaft 41 moves a magnetoresistive element 3 into the air gap of a fixed magnet 37 or 38, the electrical connection to the element 3 being through a restoring spring 46. The magnets are mounted on a rotatable disc 39 which is preset into a position with respect to the element 3 such that the required operating stroke is obtained.
Patent GB-965712-A (GB)
Title: New fused polycyclic hydrocarbon derivatives and processes for their preparation
IPC: C07J69/00
Filed: 1961-10-31
Abstract: The invention comprises A-nor-B-homo-estr-5(10)-ene-3, 6-dione derivatives having the formula: <FORM:0965712/C1/1> in which R represents either an oxygen atom of a keto group or the grouping =H(OAc) wherein H occupies the "a "-position and Ac indicates an acyl group derived from an organic carboxylic acid having from 1 to 7 carbon atoms and the preparation thereof by treating a compound of the formula: <FORM:0965712/C1/2> successively with ozone and reducing so as to form the corresponding 5, 10-seco-estrane-3, 5, 10-trione derivative and cyclizing the latter by treatment with a dehydrating agent. Reduction may be effected with zinc and acid or lower alkyl phosphite. Cyclization may be effected with a concentrated aliphatic carboxylic acid, e.g. acetic acid. Specification 965,718 is referred to.
Patent GB-391790-A (GB)
Abstract: 391,790. Photographic sensitive materials. BERRY, W. A., 12A, Forum Side, High Street, Edgware, Middlesex, STORR, B. V., 26, The Square, and ILFORD, Ltd., both in Ilford, Essex. Sept. 3, 1931, No. 24794. [Class 98 (ii).] A photographic printing-emulsion comprises an insoluble silver salt such as silver chloride and a soluble salt of manganese. In addition a salt of gold with or without a lead salt and a thiocyanate may be included in the emulsion. The emulsion may be prepared by precipitating silver chloride from a solution of soluble silver salt, e.g. silver nitrate, by the addition of manganese chloride, and may be coated on paper or other suitable supports. In one example of preparing the emulsion a solution of manganous chloride is added to a solution containing silver nitrate, gelatine, and citric acid, in excess of the quantity required to precipitate the silver. A solution of gold chloride, ammonium thiocyanate and gum arabic is then added and finally, small quantities of solutions of lead nitrate, chrome alum, formalin and a mauve dye. Paper coated with the emulsion is exposed to light until a faint image is visible, and developed with a developer containing only a small proportion of sulphite. A suitable developer comprises Adurol, sodium sulphite, sodium carbonate and potassium bromide. The paper is then fixed in hypo to which a small quantity of ammonium thiocyanate may be added, or it may be toned in a solution of common salt and potash alum before fixing. According to the Provisional Specification a developer comprising glycin and sodium carbonate but without sodium sulphite may be used, followed by a stop bath of boric acid.
Patent GB-1048997-A (GB)
Title: Improvements in or relating to control means for electrical apparatus
Inventor: GURWICZ DAVID
IPC: H02P7/29
Filed: 1963-10-05
Abstract: 1,048,997. Control of D.C. motors. SEVCON ENGINEERING CO. Sept. 23, 1964 [Oct. 5, 1963], No. 39300/63. Heading H2J. Relates to a control system for a batteryoperated motor as described in Specification 950,734 comprising a controlled rectifier pulse generator including capacitor C, and means for adjusting the pulse frequency and thereby the power applied to the motor, the current flow being maintained during the interpulse periods. A controlled rectifier SCR 3  is provided for stopping the inductive effect of the battery reducing the stored charge in the capacitor and thereby preventing turn-off of the controlled rectifier in the pulse generator. When the main current-carrying rectifier SCR 2  is switched off, capacitor C charges through rectifier SCB 1  to the peak voltage of the battery. When the battery returns to its normal open-circuit voltage, the capacitor is unable to discharge through diode D 1  since rectifier SCR 3  is blocked, the capacitor retaining the increased charge. Firing of rectifier SCR 2  discharges the capacitor C through rectifier SCR 2 , inductor L, and rectifier SCR 3 , the latter being fired by transistor TR 1  at the same instant as the rectifier SCR 2  is fired. Contactor SC short-circuits the pulse generator and connects the motor directly to the battery. Resistor R 5  and diode D 4  are connectible between the battery and the gate of the rectifier SCR 3  to ensure that the rectifier is in a condition for firing when the contactor opens. A connection including diode D 6  is provided between the anode of rectifier SCR 3  and the firing electrode of rectifier SCR 2  to ensure that the latter is not fired prematurely after opening of the contactor SC.
Patent GB-1152356-A (GB)
Title: Pumping Apparatus for Injecting a Secondary Fluid or Fluids into a Primary Fluid
Inventor: TACCHI PERCY GEORGE
IPC: C02F1/68
Filed: 1966-09-03
Abstract: 1,152,356. Mixing fluids in flow; closing apparatus. P. G. TACCHI. 3 Sept., 1966, No. 39472/66. Heading B1C. [Also in Division F1] Pumping apparatus for injecting a secondary fluid or fluids, e.g. detergent or disinfectant, into a primary fluid, e.g. water, comprises a housing 11, 12 provided with passageways 23, 31, 34, 35, 36 for the flow of primary fluid therethrough and a pressure responsive device, e.g. a diaphragm 14, a bellows, a piston or a capsule, connected to a pair of coaxial pistons 26a and 26b which are reciprocable to inject secondary fluid into the primary fluid. Flow of primary fluid through the adjustably restricted passageways 36 provides a pressure differential across the diaphragm 14 to move the diaphragm against the bias of a spring 40. The reciprocation of the pistons 26a, 26b is controlled by a tap, valve or spray gun controlling the flow of primary fluid. Relief valves 47 are provided in the passages 36 to allow the entry of air should the pressure within the housing 11, 12 fall below atmospheric. The size of the passages 36 may be adjusted by means of an annular plate, interposed between the housing parts 11 and 12, having holes which may be adjusted relative to the passages. A differential piston rod 24 may connect the pistons 26a, 26b and the spring 40 dispensed with. Air bleeds may be provided in the suction connections to the pump cylinders 27a, 27b to prevent injection by the pistons.