baber/WOPTO huggingface dataset:
Patent GB-755016-A (GB)
Title: Improvements relating to electric switchgear
Inventor: AMER DONALD FOSTER
IPC: H01H33/16
Filed: 1953-07-08
Abstract: 755,016. Air-blast switches; oil-break switches. REYROLLE & CO., Ltd., A. July 8. 1954 [July 8, 1953], No. 18961/53. Class 38(5) In multi-pole distribution system employing a circuit-breaker having two seriesconnected breaks, the junction point between the breaks of each pole is connected, on operation of the breaker, to each other pole through an impedance and diverter gap which is arranged to be closed or to break down on operation of the circuit-breaker and to be subsequently restored to its initial condition. For A.C. circuits the impedance may be a resistance and/or a capacitance, but for D.C. circuits it is an inductance or inductance-capacity combination. For three-phase applications the resistance-gap combination may be star-connected and earthed so that on earth fault, one combination will shunt the fault and the break on the fault side of the breaker, whereas for phase faults, two impedances in series will shunt the fault and the two breaks on the fault side. In a conventional oil-tank type breaker, the bridging bar may be arranged in its open position to engage one terminal of an impedance the other terminal of which is earthed at the tank. In Fig. 2, operation of a trip valve 17 admits air from reservoir 16 via pipe 19 and apertures 20 to raise a piston 21 and operate a rack mechanism 27, 28 to separate the main contacts 24, 26. Air also passes through pipe 37 to raise a piston 35 against spring 38 and move a contact 34 to close a tubular fixed contact 33 leading to atmosphere and connected to the conducting body 15 common to the two breaks. A resistance 12 connected to the earthed base 13 at one end is thus connected either before or similtaneously with the breaker opening to the junction of the breaks and disconnected when the spring 38 restores the piston 35 after removal of the air-pressure. In Fig. 3, a gap 50 in a container 51 charged with gas via a port 52, is caused to break down by release of the pressure at a trip valve 55, so connecting a capacitance 49 between 15 and earth and diverting current from a fault. Before reclosure of the breaker the container is re-charged to normal insulation level of the system by way of valve 53.
Patent GB-329547-A (GB)
Title: Improvements in and relating to suction dredging
IPC: E02F3/90
Filed: 1929-06-20
Abstract: 329,547. Aitken, R. L. June 20, 1929. Suction apparatus and processes.- Dredging is effected by means of a suction head 16 secured to a steel pipe 12 attached to a pontoon 13 divided by partitions into end water ballast chambers and a central chamber; the pipe 12 is connected through flexible pipe 11, ball and socket joint 10 and pipe 7 to the pumps and the pontoon is connected to chains 17 attached to a frame 18 or passing through fairleads to attachments on the dredging vessel. The pontoon may be emptied, as by compressed air supplied through a pipe arranged alongside the pipe 11, so as to float the apparatus, or it may be flooded as desired to sink the apparatus and apply a desired pressure to the suction head. More than one tank may be used.
Patent GB-719077-A (GB)
Title: Liquid fuel metering devices of the shuttle-type for internal combustion engines
Inventor: DOWNING ERIC WILLIAM
IPC: F02D1/00
Filed: 1951-08-13
Abstract: 719,077. Dispensing measured quantities of liquids. LUCAS (INDUSTRIES), Ltd., J. Aug. 1, 1952 [Aug. 13, 1951], No. 18998/51. Class 106(5) [Also in Group XXVII] In a liquid fuel metering device of shuttle type to which fuel is supplied from a pump and from which the fuel is discharged intermittently to an internalcombustion engine, the means for determining the position of the adjustable shuttle-stop comprises the combination of a contoured and endwise movable abutment means for effecting endwise movement of the abutment, a rocker co-operating with the abutment and means responsive to the air pressure in the engine intake manifold for imparting endwise movement to the rocker relatively to the abutment. Fuel usually under high pressure, is supplied to an inlet connection e and is delivered to the engine through outlets f of a metering device of known form, comprising a sliding shuttle valve a contained in a rotary cylindrical valve b adapted to be driven by the engine. The metering device includes a fixed stop g and an adjustable stop h. The stop h is adjusted according to engine air intake pressure by a piston w which controls the position of a member r. This member actuates the stop through a roller n and lever j. An abutment o comprises two straight parts joined by a curved part p. This abutment is shown in the position which it normally occupies when the engine is hot. When the engine is cold the abutment is raised and permits the member r to move to the right so that the stop takes up a position in which an increased quantity of fuel is supplied. The abutment is operated by a lever 9 through the medium of a toothed segment 8 and a rack 4 the latter being connected to the abutment by a pin (not shown) which engages a slot 6. The lever may be operated manually or alternatively or in addition by a thermostatic device. For example it may be operated by means of a temperature sensitive capsule in the cooling water system. Control according to atmospheric pressure is provided for by means of an evacuated capsule 26 which operates a wedge 25 which turns the abutment which is supported by a roller q to permit this turning. Alternatively the wedge may be operated by a centrifugal governor respponsive to engine speed. Any other device responsive to a condition associated with the engine may be used. When the abutment is raised an arm 22, Fig. 2, relieves the pressure of a spring 16 and permits a valve 19 to open under the air intake suction and permit additional air to be supplied to the intake. The air enters at 10 and after passing the valve 19 leaves by a passage 17 and connection 3. A plunger k acted on by the fuel pressure co-operates with the lever j to partially counterbalance the load due to fuel pressure on the stop h. Specification 653,030 is referred to.
Patent GB-573249-A (GB)
Title: Improvements in distributor valves
IPC: F16K11/16
Filed: 1943-10-16
Abstract: 573,249. Valves. PARKER, A. LA R. Nov. 16, 1943, No. 19046. [Class 135] A distributer valve, intended particularly for use in the selective supply of one or more fuels to an aircraft engine, comprises a hollow casing 5 on which are radially arranged a number, e.g. four, of inlet connections 38, each connected to a fuel tank, and an outlet connection 59, the inlets 38 being each fitted with a poppet-type valve assembly adapted to be selectively operated by a cam 30 rotatable in a vertical plane by a shaft 21 carrying means 25 for connection to any suitable actuating mechanism. Each valve assembly comprises a unit consisting of a seating plate 45 having a raised seat rib 46 and a depressed spider 47 supporting an axial bearing cup 48 in which is housed a spring- pressed plunger 49 carrying the valve member 51. The latter is formed with a groove 52 to receive a seat-engaging gasket 53, further gaskets 29, 56 being provided between the casing 5 and cap 23 and in the counterbore 43 in the connection 38 respectively. As shown in Fig. 5, the inner corners of the gasket 56 are chamfered at 58 to permit compression when the securing screws 40 are tightened up. The complete valve assembly is removably held in position by a split ring 54 engaging in a recess 53 in the counterbore 43. In a modification, the outlet is provided in the end closure plate 15, the connection 59 in this case being fitted with a valve assembly and serving as an additional inlet. Fig. 14 shows a further construction having four connections 78 instead of five, the open ends of the casing being' closed by plates 79 and certain of the connections being fitted with adjustable elbow extensions 81.
Patent GB-1008986-A (GB)
Title: Photosensitive electrodes and methods of making same
Filed: 1963-05-14
Abstract: 1,008,986. Semi-conductor devices; television pick-up tubes. HITACHI Ltd. May 14, 1963 [May 25, 1962], No. 19093/63. Drawings to Specification. Headings H1D and H1K. A photo-sensitive electrode for Vidicon and other pick-up tubes comprises a substrate bearing a single-layer film of photo-conductive material, the film having been formed by vapour deposition in an atmosphere which was varied in pressure in a continuous fashion so that the film has a porosity varying through its thickness. In the embodiment described, antimony trisulphide is deposited in an argon atmosphere on to a glass substrate bearing a transparent conductive film. The time necessary for the requisite deposit is predetermined, and in the embodiment is five minutes. The apparatus is arranged such that in this time, during deposition, the argon pressure is increased in proportion to the time elapsed from an original of 10<SP>-5</SP> mm. Hg to a pressure of 10<SP>-1</SP> mm. Hg. The film formed varies linearly from an initial extremely compact solid to a porous structure formed at the higher gas pressure. In the single Figure (not shown), the performance of the electrode is compared with two and three layer prior act constructions. The change of gas pressure need not be proportional to time, thus the porosity gradient in the film may be readily controlled.
Patent GB-1492262-A (GB)
Title: Titanium base alloy
IPC: C22C14/00
Filed: 1975-05-07
Abstract: 1492262 Titanium Alloy IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 29 April 1976 [7 May 1975] 19130/75 Heading C7A A titanium-based alloy suitable for high temperature high stress applications i.e. aeronautical engine applications contains Al 5-6 Sn 2À5-4À5 Zr 2-4 Nb 0À75-1À25 Mo 0À1-0À6 Si 0À2-0À4 Ti Bal plus impurities, which may be up to 0À02% each of Cr, Ni and Mn and up to 0À15% oxygen. Optimum tensile ductility, creep, fatigue, oxidation and welding properties are obtained by solution treating at 1010-1050C, cooling to ambient temperature, and ageing at 500-600C. An intermediate heat treatment in the range 800- 900C may be used prior to ageing.
Patent GB-689544-A (GB)
Title: Centrifugal machine for continuous operation
IPC: B04B3/02
Filed: 1951-08-14
Abstract: 689.544. Centrifugal-separators. ESCHER WYSS AKT.-GES. Aug. 14, 1951 [Sept. 2, 19501. No. 19185/51. Class 23 [Also in Group XXVI] A continuously acting strainer separator comprises a rotatable basket 1, a reciprocating member 7, a distributing chamber 8' moving with the member, and a feed pipe having a delivery section 11 following the movements of the chamber and connected thereto in a substantially fluid tight manner. The member 7 rotates with the basket and is reciprocated during centrifuging to feed separated solid along the basket wall to the discharge aperture 15 whilst separated liquid is collected in chambers 14. The delivery section of the feed pipe is connected to a storage tank 9 by a flexible section 10 and is attached to the member 7 by a rod 7<SP>1</SP>, a stuffing box 12 being provided. at its entry to the distributing chamber. An internal partition 16 may be fitted in the distributing chamber to facilitate a preliminary separation of liquid and solid, the liquid from this separation being withdrawn through a pipe 8 or alternatively passing through a screen in the partition. In a modification, Fig. 3 (not shown) a conical housing surrounds the distributing chamber and the stuffing box to collect matter leaking therefrom and lead it for centrifugal treatment in the basket. In further modifications, Figs. 4 ... 6 (not shown) the delivery port of the feed pipe is pivotally mounted on the machine housing; and the stuffing box is replaced by a ring having a spherical surface and spring urged onto a mating surface on the pipe. A control valve may be provided in the feed pipe, and it may be automatically controlled to shut off the feed when the speed of the basket falls below a certain value.
Patent GB-864271-A (GB)
Title: Improvements in or relating to electrical pulse generators employing transistors
Inventor: BRINKER CARL SIEGMUND DEN
IPC: H03K3/30
Filed: 1958-06-16
Abstract: 864,271. Transistor pulse delaying circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. June 10, 1959 [June 16, 1958], No. 19199/58. Class 40(6) In a pulse delaying circuit, the input pulse is applied to a transistor to cause the charging in a substantially linear manner of a capacitor connected in circuit with a secondary winding of the transformer of a blocking oscillator, whereby, when the capacitor obtains a predetermined charge regeneration takes place to provide a pulse from the output of the blocking oscillator. In the Figure, a positive pulse applied to the base of transistor T1 cuts off the collector current so that a capacitor C charges linearly through resistor R until the potential at point P rises to a value such that the transistor T2 of a blocking oscillator T2, N1, N2 conducts, producing a delayed output pulse and its collector electrode. In an alternative embodiment (Fig. 2, not shown) the collector instead of the emitter of transistor Tl is connected to capacitor C which therefore charges linearly through the emitter-collector path of the transistor when a negative input pulse is applied.
Patent GB-894989-A (GB)
Title: Improvements in or relating to fittings for relieving boats of water
IPC: B63B13/02
Filed: 1959-06-05
Abstract: 894,989. Self-bailing and surface friction reducing. PEARCE, K. P. -Sept. 2, 1960 [June 5, 1959], No. 19229/59. Class 113. A self-bailer for a boat comprises a frame 10 in an aperture in the bottom of the boat, a fixing flange 11 surrounding the frame, and a movable member, consisting of bottom plate 13 and two side plates 14, hinged near its front end on pin 12. A shaft 18 passes through upward extensions of the side plates 14 and forms pivots for two cams 19 which rest upon the fixing flange 11 and are interconnected by handle 20 by which they can be rotated together to lift the movable member until the bottom plate is flush with the bottom of the boat and the aperture is closed. Abutting surfaces of the bottom plate and frame are provided with a resilient sealing material (not shown) to prevent leakage when the aperture is closed, and a resilient rubber flap 17 is provided, attached at its upper edge to plate 16, to prevent ingress of water at low speeds with the aperture open. When all the water has been removed from inside the boat, air is drawn through the aperture to the underside of the hull and reduces the skin friction drag.
Patent GB-1176319-A (GB)
Title: Process for producing Orotic Acid or Orotidine
IPC: C12P17/12
Filed: 1968-04-24
Abstract: 1,176,319. Orotic acid and orotidine. KYOWA HAKKO KOGYO CO. Ltd. 24 April, 1968 [15 May, 1967; 13 Nov., 1967], No. 19487/68. Heading C2C. orotic acid and/or orotidine are produced in a process which comprises culturing a microorganism capable of producing orotic acid or orotidine and belonging to the genus Brevibacterium, Arthrobacter or Corynebacterium under aerobic conditions in an aqueous nutrient medium containing as the main carbon source at least one hydrocarbon or at least one polyol, accumulating orotic acid, orotidine or a mixture thereof as the product in the resultant culture liquor, and recovering said product therefrom. The culturing may be carried out at a temperature of 20‹ to 50‹ C. and at a pH of 5À0 to 9À0.
Patent GB-1522578-A (GB)
Title: Valve arrangement for a nuclear plant residual heat removal system
IPC: G21C15/18
Filed: 1977-05-10
Abstract: 1522578 Auxiliary residual heat removal system WESTINGHOUSE ELECTRIC CORP 10 May 1977 [17 May 1976] 19519/77 Heading G6C An auxiliary residual heat removal system for a nuclear reactor comprises first and second trains 2, 4 connected to the primary coolant system, each train including a pump 12, heat exchanger 10 and a single motorized valve 4 connected in series with a pair of motorized valves 42, 42 NC which are connected in parallel and one of which is a normally closed valve, the single and normally closed valves of the first train being connected to a first electrical bus A while the other parallel valve is connected to a second electrical bus and the single and normally closed valves of the second train being connected to the second bus B while the other parallel valve is connected to the first bus A.
Patent GB-1511625-A (GB)
Title: Muffled axial-flow ventilator
IPC: F04D19/02
Filed: 1976-05-12
Abstract: 1511625 Silencing fans C S VASILJEVIC 12 May 1976 [14 May 1975] 19572/76 Headings F1B and F1C An axial-flow fan comprises a tubular acoustical silencer 7, and a cowling 4 adjacent the silencer the cowling having a cylindrical portion 5 embracing the fan impeller 2 and of smaller internal diameter than the silencer and a relatively short transition portion 6 providing an abrupt increase in diameter of the cowling adjacent the silencer. The transition may be continuous as shown or stepped. There may be two contra-rotating impellers 2 and two silencers 7, each encircling one of the driving motors 1. The silencer comprises resonator chambers 12 formed by elements 9 which are preferably of foamed polystyrene, and a damping layer 10 of mineral wool covered with perforated sheet 11. An internal silencing core adjacent the motor 1 may be provided.
Patent GB-724155-A (GB)
Title: Improvements in or relating to recovery of tetraalkyllead compounds
IPC: C07F7/24
Filed: 1952-08-05
Abstract: Tetra-alkyl lead is prepared by reacting lead-alkali metal alloy with a substantial excess of a liquid alkylating agent in the form of liquid alkyl ester of an inorganic acid and recovering the tetra-alkyl lead from the alkylation slurry comprising a solution of the tetra-alkyl lead in the liquid alkylating agent and solids from the alkylation, said solids including alkaline reacting solids, by mixing with water in the proportions of at least one mol. of water to one mol. of alkaline reacting components expressed as alkali metal, then mixing with dilute aqueous acid to neutralize the solution so that the aqueous solution has a pH less than 7, the aqueous acid and excess water being not above the ratio by volume of 50 parts of acid and water p  to 100 parts of slurry, and floating off the tetraalkyl lead solution from the aqueous solution and the solids.  By substantial excess of a liquid alkylating agent is meant of the order of 1700 per cent of the theoretical requirement for complete alkylation of the lead.  All acid-reacting substances which are water soluble may be used in the above process, e.g. mineral acids such as hydrochloric, sulphuric and nitric acids, and acid-reacting salts such as sodium hydrogen <PICT:0724155/IV (b)/1> sulphate.  The process may be used for the preparation of tetra-ethyl, tetra-methyl, tetra-isopropyl and dimethyl-diethyl lead.  In the preparation of tetra-ethyl lead using ethyl chloride as the alkylating agent, the amount of water added may be from 2.5 to 10 parts by volume to 100 parts by volume of reaction slurry, acid is then added to bring the pH of the aqueous solution below 7 so that the aqueous acid and excess water are in the volume proportions of from 10 to 50 parts to 100 parts of reaction slurry e.g., from 10 to 33 parts may be used. A number of examples are given.  The Figure illustrates a suitable apparatus for treating the alkylation slurries by the above process. The alkylation slurry is fed through line 12 into a pretreating vessel 4 fitted with agitators, and water is introduced through line 13. An overflow line 14 conducts the treated slurry to the top portion of the mixing chamber 1 fitted with agitators.  The dilute acid solution is introduced through line 15.  The resulting mixture is transferred to the settling column 3 with the aid of the lateral transfer chamber 2 and screw 7.  In the settling column, the solution of tetra-alkyl lead 29 is at the top of the column and is withdrawn through line 17, the aqueous layer 30 is withdrawn through line 21, and the solids are removed at intervals by opening valve 23 and collecting the solids in hopper 24.
Patent GB-836637-A (GB)
Title: Improvements in devices for trimming lawn edges
IPC: A01D34/84
Filed: 1957-06-21
Abstract: 836,637. Edge-trimmers. McLAUGHLIN, J. C. June 21, 1957, No. 19692/57. Class 6(2). An edge-trimmer for lawns comprises a head 1 supported so that, when tracked along the marginal part of a lawn, grass cutting means carried by it operate in a plane so as to carry out a shearing operation vertically across the lawn edge, and a handle bar 7 upstanding from the head 1 by which the head-supporting means is tracked along carrying means at a position remote from the head 1 which actuates the cutting means during the travel of the head 1. The supporting means, e.g. a flange 1a, may move on rollers 29 or a skid device, a fixed blade 27 thereon cooperating with the shearing edge of an oscillating blade 23, and be tracked along by a hand grip 8 on the handle bar 7, a pulley 9 carried by a spindle 10 in a bearing 11 carried by a bracket 12 on the handle bar 7 driving a pulley fixed on a spindle (journalled in the head 1) through a step-up drive transmission, e.g. a belt 15, and thus the blade 23. To the spindle is eccentrically attached a pin 31 which moves in a slot 30 in an extension of the blade 23. The blade 23, being pivotally mounted on a pin 24, is oscillated by rotation of the spindle. With a cutter having rotating blades the spindle is extended to fit into the hub thereof. The handle bar 7 may be angularly adjusted by a set screw through its base engaging a recess in the flange 5 of the head 1, in which rotates the spindle to the projection of which the head 1 is detachably joined. A -guard casing may be used for the belt and pulleys. A chain and sprockets may be used instead of a belt and pulleys. A free-wheel device can be provided with the spindle and a variable speed gear can be combined with the transmission.
Patent GB-1220113-A (GB)
Title: Stirrer
Inventor: STAAF GUSTAF ADOLF
IPC: B01F27/91
Filed: 1968-04-25
Abstract: 1,220,113. Stirrer. G. A. STAAF. 25 April, 1968 [25 April, 1967], No. 19704/68. Heading B1C. A stirrer comprises an axial-flow propeller 18 secured to a shaft 17 which carries a guide 19 adapted to divert axial flow from the propeller radially away from the shaft. The stirrer may be rotated in a container 11 provided with vanes 20. The guide 19 may also consist of one or more truncated cones on a circular disc, Figs. 3 and 4 (not shown).
Patent GB-800086-A (GB)
Title: Slider box assembly for warp knitting machines
IPC: D04B27/26
Filed: 1956-06-26
Abstract: 800,086. Knitting-machines. KIDDE MANUFACTURING CO., Inc. June 26, 1956 [Aug. 17, 1955], No. 19723/56. Class 74 (2). Shock absorber means clamps the spring-urged return of a guide-barshogging pusher bar 16 towards the cam means which actuates it. The shock absorber means comprises a plunger 36 moving with the bar 16 and working in a cylinder 35, which fluid can enter and leave via inlet and outlet ports 37, 39, controlled by, respectively, an adjustable spring- and-ball valve 41, 40 and an adjustable needle valve 42. The fluid is supplied from and returned to a reservoir 34.
Patent GB-516302-A (GB)
Title: A system of connections between the components of a wireless apparatus having a remote controlling device
IPC: H03J9/00
Filed: 1938-07-04
Abstract: 516,302. Wireless apparatus. SOC. ANON. FIMI. July 4, 1938, No. 19770. Convention date, July 21, 1937. [Class 40 (v)] The input circuits 8, 9 of a wireless receiver or transmitter are connected to the tuned output circuit 1, 2 of a remote controlling device 8 by a low-impedance line 5 which carries only a portion of the voltage available, the portion being obtained by an inductive, capacitative resistance or mixed potential divider. A capacitative potential divider 3, '4 is shown in the drawing, and the couplings at both ends of the line are similar. The arrangement minimizes the effect on the tuning, say, of a superhet receiver, of any casual variations in the impedance of the connecting line, and renders critical " matching " unnecessary. Specifications 445,917, and 483,320, are referred to.