baber/WOPTO huggingface dataset:
Patent GB-1016186-A (GB)
Title: Improvements relating to cooling systems for power transformers
Inventor: MAZZA VITTORIO ROBERTO
IPC: H01F27/18
Filed: 1963-01-10
Abstract: 1,016,186. Cooling transformers. ELECTRICAL RESEARCH ASSOCIATION. Dec. 30, 1963 [Jan. 10, 1963], No. 1214/63. Heading F4U. [Also in Divisions G3 and H1] The evaporative cooling system for a transformer 2 utilizes a mixture of two liquids, the boiling point of the first being below the maximum operating temperature of the transformer windings and that of the second being lower than that of the first, the liquids being separated in a plant including a condenser and fractionating column, the condensed lowerboiling-point liquid passing progressively to a reserve container. During starting up of the transformer the vapour of the second liquid serves to insulate the transformer, the vapour then being gradually removed to prevent it causing excessive pressure as the transformer reaches normal operating temperature. At operating temperatures the first liquid is sufficiently insulating and does not itself cause excessive pressure. The mixed liquid from the sump 3 is sprayed from nozzles 7 over the windings the vapour being condensed by heat exchanger 8. When the pressure in the casing reaches a given value the valve 24 opens, the resulting pressure in the receiver 22 opening the servo-operated valve 21. The vapours are separated by fractionating column 13 most of the first liquid condensing and returning to the easing 1 and most of the second being condensed by the refrigerating coil 12 and overflowing from trays 30 into container 14. As pressure in casing 1 decreases with separation valve 24 closes. On substantially complete separation, pressure and temperature sensitive valves 40 and 42 open and the pressure in receiver 22 is released and valve 21 closes. Pipe 50 drains remaining condensate from column 13 into container 14. As the pressure in chamber 15 drops switch 17 stops the refrigerator. On shutting down, the pressure in casing 1 drops and vapour from 15 enters the casing 1 through pipe 51 and one-way valve 52. At a given pressure value in container 14 pressure regulator 53 allows liquid into air-warmed evaporator 54. At a given liquid level in container 14 valve 60 opens to allow the remaining liquid to return to casing 1 by pipe 61. If the transformer is shut down before servo-operated valve 21 closes and is then restarted the required pressure and temperature to operate valves 40 and 42 might not be attained. The adjustable leak 66 is therefore provided to release the pressure in receiver 22 and close the valve 21.
Patent GB-584647-A (GB)
Title: Improvements in or relating to rock drill mountings
IPC: E21B7/02
Filed: 1945-01-16
Abstract: 584,647. Lifting jacks. HOLMAN BROS.' Ltd., and HOLMAN, A. T. Jan. 16, 1945' No. 1278. [Class 78 (iii)] [Also in Group XXIII] An extensible column for use as a lifting jack comprises two members screwed together, one member being supported in a casing adapted to engage against a floor, wall or other fixed surface, the column being extended or retracted by rotating this member in either direction by means of a pneumatic motor mounted on the casing. In the form shown, the hollow lower end of a column 5 engages a square-threaded jack screw 7 the unthreaded lower end of which is supported on a ball race 8 in a casing 9 and is surrounded by a tubular ratchet wheel 13. The latter carries internal teeth engaged by a reversible pawl 14 carried by the screw. 7, and external teeth engaged by a rack in the piston 15 of a double-acting pneumatic motor 16. The pawl 14 has two flat faces and a projection 29 engageable in a groove in the screw 7 and co-operating with a spring-pressed thimble 30 in the screw. The pawl is held in position in a recess in the scraw by a disc 33, and is carried at the lower end of a spill 34 the upper end of which carries a pin 25 engageable by a reversing ring 26. The reversible pawl may be replaced by a pair of oppositelyacting pawls, and the screw might be driven through a worm and worm wheel by a reversible rotary pneumatic motor.
Patent GB-606584-A (GB)
Title: Improvements in railway rail joints
IPC: E01B11/24
Filed: 1946-01-15
Abstract: 606,584. Rail joints. COPE, C. Jan. 15, 1946, No. 1311. [Class 104 (ii)] A square-cut lap joint, formed by a vehicle cut through the longitudinal centre of the rail and a transverse cut meeting the former cut, has a channel 2 cut downwards from the head at the meeting point of the two cuts to prevent burring over.
Patent GB-509474-A (GB)
Title: Improvements in or relating to the control of pump mechanism
IPC: F02D1/00
Filed: 1938-01-14
Abstract: 509,474. Speed governors ; fuelinjection pumps. EX-CELL-O CORPORATION. Jan. 14, 1938, No. 1319. Convention date, Feb. 5, 1937. [Class 57] [Also in Group XXVIII] The delivery of a fuel injection pump is controlled by a speed governor, and the time of injection and a stop limiting the amount of fuel that may be injected are controlled by a second speed governor. The fuel injection pump comprises a number of parallel cylinders 22 having spring-loaded plungers 21 actuated by a swash-plate 57 rotated by a shaft 59. The pump cylinders 22 are supplied by a feed pump 39 and the suction ports 33 are controlled by a rotary valve 31 having grooves 34 and a projection 35 of varying width. The valve 31 is driven by the shaft 64 and is moved axially to vary the quantity delivered, and the phase relationship of the shafts 59, 64 is varied to adjust the time of injection. The valve 31 and the shaft 64 are connected by a coupling sleeve 74 which allows axial movement of the valve 31 which is adjusted by the rod 92 actuated by a centrifugal governor 95 which is loaded by an idling spring 107 and another spring 110, the loading of which is varied by adjusting the shaft 115. The springs 107, 110 act on arms 106, 109 of a three-armed lever, the other arm 105 engaging the abutment 101. The spindle 115 carries an arm 119, which engages a stop 120 to limit the maximum compression of the spring 110, and also another arm 130 which engages an arm 131 and moves a lever to engage an abutment 132 on lever 124 to move the valve 31 to reduce the output to zero. A second centrifugal governor is arranged in a plane perpendicular to the plane of the governor 95 and acts on a sleeve 65 to vary the phase relationship of the shafts 59, 64. This governor is loaded by a spring 89 which acts through a lever 85 on an abutment 83. The lever 85 carries a cam 127 which acts as an abutment for the lever 124 and limits the movement of the valve 31 in a direction to give maximum delivery. In a modification, a spring-loaded piston 139 is exposed to the pressure existing in the air induction pipe between the throttle valve 135 and the engine and is connected by a rod 140 to a lever 150 which rotates a cam 156 to move the lever 124a to adjust the axial position of the valve 31 and the movement is limited by the cam 127a. The cam 156 is carried by a lever 152 pivoted at 153, and a pin 161. carried by the lever 85a moves the lever 152 to modify the fuel supply to suit the engine at certain speeds. A further construction is described in which another centrifugal governor is provided which co-operates with the piston 139 and takes over control at high engine speeds. Specification 432,839 is referred to.
Patent GB-1383251-A (GB)
Title: Method and apparatus for treatment of sewage
IPC: C02F3/26
Filed: 1972-01-11
Abstract: 1383251 Aerating liquids J V WORTHINGTON 11 Jan 1972 1329/72 Heading B1C [Also in Division Cl] Apparatus for aerating sewage comprises a pressure vessel 16 having a tangential inlet 28 for the liquid, gas diffusers 44 supplied from a manifold 40, and a gas venting pressure relief valve 52; the treated liquid is withdrawn from a well 68 by an outlet pipe 66. There is a drain 32 for any solids which may settle out. The liquid level 82 in the container is controlled by a float valve 76 which pneumatically actuates the outlet valve 72. The gas used may be air, oxygenated air, or pure oxygen, and excess gas may be vented to atmosphere or to the outflow sewer or, if rich in oxygen, recirculated. The apparatus may be provided at an intermediate pumping station in the sewage influent line (see Fig. 1, not shown) or at a sewage treatment station (see Fig. 2, not shown) having also a settling tank (112), sludge drying beds (138) and sludge recirculating means. In this case two pressure vessels (16', 16") may be provided in series, only the second having liquid level control means. Preferably the pressure in vessel 16 is 15 p.s.i. or more, the gas bubble size is 5 microns, and the residence time in the vessel is 12-25 minutes.
Patent GB-599811-A (GB)
Title: Improvements in and relating to apparatus for the firing of furnaces by means of liquid fuel
IPC: F23D11/00
Filed: 1945-01-16
Abstract: 599,811. Furnaces. TURNER, SIR F. R. G., and GRAY, C. J. Jan. 16, 1945, No. 1360. [Class 51 (i)] [Also in Group XI] Apparatus for firing a liquid fuel furnace comprises a cylindrical register consisting of two axially-spaced parts 1, 2 separated by inclined vanes 3 which impart a swirling rotation to the entering air, a co-axial air-supply tube 8, and a sprayer tube 10 slidably mounted in a central sleeve 9a whereby the sprayer may be displaced to adjust the spray relatively to the furnace throat, or to retract the sprayer cap and tip plate 16, 17, for protection, into the tube 8 when that particular burner is not in use. The admission of air past the vanes 3 may be controlled by an axially sliding shutter 4 having manipulating handles. The register 1, 2 is positioned between a screen plate 5 and a refractory quarl 6. The air tube 8 is supported from a plate 7 to which is secured by screws 11 a spider 9 carrying the sleeve 9a. The outer end of the sleeve is tapered, split and threaded to receive a tapered clamping nut 12. Dogs 9b on the sleeve engage recesses in the head of the sprayer tube 10 to lock the same when it is necessary to tighten or slacken the bolt 13 which holds the coupling 14 of the oil supply hose 15. Radiation screens 18 are secured in front of the plate 7 which is provided with doors for observation and insertion of an igniting torch.
Patent GB-809882-A (GB)
Title: Improvements in or relating to the motor circuitry of vehicles powered by electric motors which are supplied through rectifiers from single phase alternating-current supply systems
IPC: B60L9/12
Filed: 1957-01-14
Abstract: 809,882. Rectifying. SIEMENS-SCHUCKERTWERKE A.G. Jan. 14, 1957 [Jan. 14, 1956], No. 1427/57. Class 38 (2). [Also in Group XXXIX] To suppress the harmonics in a single phase line I from which D.C. traction motors 6, 7 are energized through rectifiers 4a, 4b, 5a, 5b, the rectifiers are so controlled that the motor groups 6, 7 are both energized by trains of rectified half waves of voltage which alternate between being complete and partial, the complete half-waves being supplied to one group at the same times as the partial half-waves are supplied to the other group. Groups 6, 7 are respectively supplied with the rectified voltages from pairs 4a, 4b, 5a, 5b of valves connected in biphase to the secondary winding of transformer. The values of the partial half-waves are determined by the instants at which rectifiers 5a, 4b begin to conduct as determined by impulses supplied to their grids from controller 10. The output voltage may be controlled by tap changing on the auto-transformer part 3a of transformer 3. The rectifiers may be connected to the centre tap, or in bridge formation, Fig. 3 (not shown). The rectifiers may be ignitrons, suitably controlled, or dry rectifiers, when the delay in conduction is controlled by mechanical switches, Fig. 3 (not shown), or switching chokes. The delay may be controlled by the driver or automatically. The variation in delay angle alters the harmonics cancelled, thus delays of 60 degrees, 36 degrees, 26 degrees respectively result in disappearance of third, fifth and seventh harmonics.
Patent GB-545587-A (GB)
Title: Improvements in and relating to apparatus applicable to screw propellors for obtaining maximum efficiency under all conditions
IPC: B63H5/14
Filed: 1941-02-04
Abstract: 545,587. Screw propellers, fans and the like. ADAMTCHIK, M. T., and KENNEDY, J. R. Feb. 4, 1941, No. 1497. [Class 114] [Also in Group XXVI] For directing the flow of fluid on to the propelling or impelling blades of a marine or air craft, pump, fan or turbine, a number of flexible vanes, which are variable both in pitch and in camber, is pivotally mounted on axes that are stationary relative to the propelling or impelling blades, enabling the vanes to be set either at a positive or negative angle to the general direction of flow of the fluid. In the construction shown in Fig. 1, in which the vanes 9 are supported between a boss I and an outer casing 3 so as to be applied as a self-contained unit to the aircraft or engine frame in advance of the propeller hub 24 and blades 4, each vane.is carried by a sleeve 8 rotatable upon a shaft 7 extending between the boss 1 and casing 3, and.is also connected to a second shaft 12 from which extends a guide pin 17, while a sleeve 18 surrounding the shaft is provided with a guide pin 19 at its inner end. The guide pins 17, 19 and a third guide pin 16 attached by a lever 14, Fig. 4, to the shaft 8 engage slots 20, 21, 22 in a sliding control plate 23, Fig. 3, the inclination of the slots being so arranged that, as the plate 23 is displaced in either direction from its mid position, the vanes 9 are swung to a positive or negative angle and at the same time are flexed to a curved form as shown in the extreme positions in Fig. 5. Preferably, the number of vanes 9 differs from the number of propeller blades 4, while the sliding plates 23 controlling the vanes are simultaneously operated. In a modification, Fig. 8,. in which the vanes 29 are associated with the blades 42 of an impeller fan or pump, and are secured to shafts 28, simultaneous adjustment of the vanes is effected by means of a rotatable ring 41 connected to levers 35 which are engaged by pins 33 depending from ball joints 32 disposed at the inner ends of the shaft 31 that determine the pitch and camber of the vanes 29.
Patent GB-559417-A (GB)
Title: Prevention of distortion in thermionic valve repeaters
IPC: H03F3/22
Filed: 1943-01-29
Abstract: 559,417. Thermionic amplifiers. STANDARD TELEPHONES & CABLES, Ltd. Jan. 29, 1943, No. 1533. Convention date, Feb. 5, 1942. [Class 40 (v)] Distortion in a push-pull thermionic amplifier due to a high impedance high tension supply source is corrected by applying to the input the voltage across the secondary winding of a transformer having its primary connected to the high tension source. The Figure shows a supply rectifier with a choke feed to smoothing condenser 34 feeding a class B push-pull amplifier. Transformer primary 41 is connected across condenser 34 in series with a blocking condenser 43 and the secondary 42 is arranged in series with the grid bias source 35. The turns of the secondary wmding may be varied to adjust the compensating voltage applied to the input.
Patent GB-346467-A (GB)
Title: Improvements in and relating to petrol gas apparatus
IPC: C10J1/00
Filed: 1930-01-16
Abstract: 346,467. Carburetting. SMITH, H. E., Cuttle Hill, Bush Hill, London. Jan. 16, 1930, No. 1593. [Class 55 (ii).] A petrol gasapparatus having a rotary pump of the drum type supplying air to the carburetting chamber 2 which is fed with measured quantities of petrol, is driven by a compressed air motor 9 of the rotary or swash - plate type and geared to the pump shaft 8. The rise and fall of a gas holder 3 controls the supply of compressed air to the motor independently of the motor valves, by means of a rod 21 connected to a lever 20 rocked by the gas holder. The rod 21 rests on the stem of a valve 18 which slides in the compressed air supply pipe 17 and is depressed by the rod 21 preferably against a return spring 19. The motor 9 is connected by a worm and wheel to a sprocket 13 connected by chain with a pump shaft 8. The petrol measuring device in the part 4 is connected by a rod 5 with a crank on the spindle of a pinion 6 driven by a gear wheel 7 on the shaft 8.
Patent GB-780127-A (GB)
Title: Laundry carrier for personal wear
IPC: D06F95/00
Filed: 1955-01-19
Abstract: 780,127. Aprons for personal wear. WOJCIK, J. E. Jan. 13, 1956 [Jan. 19, 1955], No. 1594/55. Class 141 An apron b is provided with a large pocket a which is stiffened by inflation, canvas or whaleboning and can be opened out to receive laundry, or held flat by press fasteners d. An upper pocket c may be provided for pegs.
Patent GB-1018564-A (GB)
Title: Improvements in or relating to control devices for hoppers
Inventor: EPPENBERGER PAUL
IPC: B65D90/62
Filed: 1964-01-14
Abstract: 1,018,564. Roller mills. G. BUHLER. Jan. 14, 1964, No. 1610/64. Heading B2A. [Also in Division B8] Material which is fed from a hopper by roller 13 past gate 14 so that it may be ground by rollers 11 and 12 has the gap which lies between roller 13 and gate 14 controlled in size by detector 15 so that whenever the material in the hopper increases in quantity the said gap is increased to increase the feed to the rollers 11, 12. A detector 100 which floats to the surface of the material in the hopper has a propeller 29 which is driven from roller 12 via belt 21 and shaft 25. Arm 17 which carries propeller 29 surrounds shaft 25 and is pivoted at 16 and counter-balanced at 30 so that the up and down movement of the propeller 29 may be transmitted to gate 14 via levers 33, 34, bell-crank 36, arms 39 and 41 and rod 44, the gate 14 being pivoted to turn about shaft 45. Operation. If the material in the hopper (not shown) increases propeller 29 swims to the surface thereof. Additionally propeller 29 drives agitator 80 to spread the material in the hopper. The rise of propeller 29 is transmitted by the linkage shown to gate 14 so that the latter pivots to widen the gap between roller 13 and itself. Also the movement of bell-crank 36 operates switch 50 whenever the propeller 29 falls to a predetermined lower limit. This switches off the motors which drive rollers 11 and 12 or widens the gap therebetween. Alternatively the control between propeller 29 and the rollers 11, 12 may be hydraulic and replace switch 50.
Patent GB-229066-A (GB)
Title: Improvements in and connected with internal combustion engines
IPC: F02B61/06
Filed: 1924-01-21
Abstract: 229,066. Standard Motor Co., Ltd., and Maudslay, R. W. Jan. 21, 1924. Crank chambers. - The crank chamber and gear-box extension are cast in one piece in the form of a trough open only at the top. The extension has a vertical partition B, and this partition and the end-plate C are formed with bosses to receive the gear-shaft bearings. The chamber is deep in front of this partition to form the flywheel and clutch pit. Platforms D, E cast with the chamber receive the shaft bearings, the shaft &c. being lowered through the open top. The cam shaft J is inside the chamber, the driving gear L being near the fly-wheel. The engine. block F and cover plates G, H are attached to the flanged top of the trough.
Patent GB-194075-A (GB)
Title: Improvements in or relating to electrical ship propulsion systems
IPC: B63H23/24
Filed: 1922-01-19
Abstract: 194,075. Miller, L., Campbell, J. P., and Metropolitan-Vickers Electrical Co., Ltd. Jan. 19, 1922. Dynamos and motors combined for transmitting power. -Relates to ship propulsion sets comprising internal-combustion engines, alternators, and reversible induction motors, and consists in mechanical arrangements for enabling the starting, reversing and speed regulating switches to be operated bv continuous movement of a single hand-wheel, and for interlocking the switches with the engine fuel controlling handle. The installation described comprises two such sets driving respectively on port and starboard propellers. Each set has a single main hand-wheel 27, Figs. 2, 3, connected through worm gearing 31 to a shaft 30 fitted with a set of cams 32 which actuate the various switches through link-work 34. Fig; 1 shows the circuit connections. Between each alternator 4 and corresponding motor 3 are a generator main switch 7, isolating switches 8, 9, and forward and reverse motor switches 5, 6. Tying switches 25 connect the starboard and port installations so as to drive both motors from one generator when necessary. Rotor short-circuiting switches 11 exclude starting-resistance and inductance 10 from the motor circuits. The generator field windings 12 are connected to an auxiliary supply 13 through circuitbreakers 19, and are variably excited by boosters 16 furnished with rheostats 18. Movement of a controlling hand-wheel from a middle " off " position closes either the forward or reverse motor switch of the corresponding set, according to the direction in which the wheel is turned, and, by continued movement actuates successively the main generator switch, the field switch, the field rheostat, and the rotor short-circuiting switch. The supply of fuel to the engine is controlled by a hand-wheel 35 which is interlocked with the hand-wheel 27 so that the latter cannot be moved from its " off " positions unless the engine is on low speed supply. In order to vary the sequence of operation of the rotor short-circuiting switch when the hand-wheel is turned back in manoeuvring, the operating-cam is designed with a cyclical groove fitted with one-way gates so that the roller is constrained to follow different paths according to the direction in which the handwheel is turned Interlocks are provided between the hand-wheel and the reversing-switches, and between the reversing and the isolating switches. Protection against faults is afforded by arrangements of known kind for tripping the generator field circuit-breakers.
Patent GB-189685-A (GB)
Title: Improvements in and relating to insulating cold storage or the like chambers
IPC: F25D23/06
Filed: 1922-01-20
Abstract: 189,685. Anderson, R. W. Jan. 20, 1922. Non - conducting coverings. - In an insulating slab for lining the walls of cold storage chambers or for similar purposes of the kind comprising a lower stratum of granulated cork and a facing layer of cement, a series of grooves or spaces 4, Figs. 9 and 10, are formed in the cork stratum 3 and filled with the element of the cement facing, thereby producing a series or ribs on the rear of the cement facing and increasing the resistance of the compound slab to buckling. In the method of producing the compound slab shown, four cork slabs 3 are arranged in a rectangular mould 1 and the cement filled into the spaces above and between the cork slabs thus producing the facing a and cross-ribs 4 extending to the rear of the compound slabs. The ribs 4 may also be arranged to extend diagonally, or, in cases where the cork slab is produced by moulding, the grooves c, Fig. 6, for receiving the cement may not extend tn the rear of the cork 3 and may be deepest in the centre. In a further construction, Fig. 8, a cork slab is cut across obliquely and one part is inverted so as to produce between the two parts a V-shaped groove f into which cement is pressed to form the strengthening-rib c.