baber/WOPTO huggingface dataset:
Patent GB-713433-A (GB)
Title: Improvements in or relating to magnetic amplifiers
Inventor: RECHTEN ADOLF WILHELM
IPC: H03K3/45
Filed: 1951-02-20
Abstract: 713,433. Magnetic amplifiers. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Feb. 7, 1952 [Feb. 20, 1951], No. 4139/51. Class 40 (4) [Also in Group XXXVIII] A push-pull magnetic amplifier is self saturated by transitional over-compensated positive feedback and so provides a stable maximum output for all values of control current above a definite threshold value. As shown, the amplifier comprises load windings 21-24, bias windings 26, 27, and a control winding 33 which is energized by impulse signals from a magnetic vehicle detector comprising four units 36-39 as described in Specification 692,226, [Group XXXVIII]. The bias windings and the detector units are adjustably energized from an A.C. supply over a rectifier bridge 3 and a smoothing circuit comprising chokes 4, 5 and condensers 6, 7. A higher frequency A.C. supply is applied to the load windings over a centre-tapped transformer 18. This frequency is obtained by applying the second harmonic output of rectifier 3 over a filter circuit comprising condensers 11, 12 and a choke 10 to a saturable choke 13 which produces an odd harmonic output. A bandpass filter consisting of condensers 14, 15 and chokes 16, 17 then selects the fifth odd harmonic. which constitutes the higher frequency supply and is ten times the original frequency. The load windings are connected in push-pull and their combined outputs control a relay R over a bridge rectifier 20. When an impulse signal is applied to the control winding, transitional and over-compensated positive feedback in a winding 28 which is connected in series with a condenser 29 to the rectifier 20 causes the amplifier to become temporarily unstable so that one push-pull portion becomes self-saturated. Relay R then pulls up and besides controlling a switching operation such as traffic signal control, also disconnects the feedback winding and discharges condenser 29 through a resistor 32 in order to reduce the restoration time when the impulse terminates. In a modification, restoration may be hastened by causing a further condenser to be discharged through an amplifier D.C. winding when the relay operates.
Patent GB-994585-A (GB)
Title: Improvements in or relating to mining apparatus
Inventor: POLLARD THOMAS
IPC: E21D23/04
Filed: 1963-02-01
Abstract: 994,585. Mining installations. GULLICK Ltd. March 18, 1964 [Feb. 1, 1963], No. 4139/63. Heading E1F. [Also in Division B7] For inspection, servicing and operation of a longwall mineral-mining installation there is provided between the forward and rear props 17, 12 of hydraulically actuated, self advancing roof support units 12 a track or passageway along or through which one or more vehicles 22 may pass movement of the vehicle or vehicles being controlled by the man or men carried thereby. Preferably the vehicle is a sledge 22 that can be attached, preferably through a foot-operated spring-loaded clamp, Fig. 9 (not shown), to a haulage means, preferably an endless haulage means 24a, 24b.
Patent GB-765921-A (GB)
Title: A process for the manufacture of isoquinoline derivatives
IPC: C07D217/20
Filed: 1954-11-12
Abstract: The invention comprises racemic and optically active 1-(41-hydroxybenzyl)-1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 - octahydroisoquinolines and 2 - alkyl (other than 2-methyl), 2-alkenyl and 2-aralkyl derivatives thereof, and their acid addition salts, and the manufacture thereof and of the 2-methyl compounds by de-etherifying an ether of 1-(41-hydroxybenzyl)-1 : 2 : 3 : 4 : 5 : 6 : 7 : 8-octahydroisoquinoline, if desired separating the product into its optical antipodes, and further, if desired, reacting the racemic or optically active product with an alkyl, alkenyl or aralkyl halide. In an example, the benzyl ether is de-etherified by hydrogenation in methanol in the presence of palladium-on-charcoal, or the methyl ether by heating with pyridine hydrochloride or 2-methyl-5-ethyl-pyridine hydrochloride, or with methanolic caustic potash under pressure, and the product is resolved by combination with D-tartaric acid, the (+)-base D-tartrate separating first from methanol solution and the (-)-base D-tartrate being recovered by evaporating the mother liquor and recrystallizing the residue from water.  Each optically active base is liberated with ammonia and reacted in benzene in the presence of potassium carbonate with (a) methyl iodide, (b) propyl bromide, (c) allyl bromide, and (d) benzyl chloride, whilst the (+)-antipode is also reacted with b -phenylethyl bromide in benzene (all with reversal of the optical rotation).  The (-)-2-propyl compound is also obtainable by hydrogenating the (-)-2-allyl compound.  The oxalate of the (-)-2-b -phenylethyl compound and the hydrobromides of the other 2-substituted compounds are described.  Starting materials.  1 - (41 - Alkoxybenzyl)-1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 - octahydroisoquinolines are prepared by hydrogenating the corresponding 3 : 4 : 5 : 6 : 7 : 8 - hexahydro compounds obtained by reacting b -cyclohexen-1-ylethylamine with a 4-alkoxyphenylacetic acid and cyclizing the resulting amide.  1 - (41 - Benzyloxybenzyl) - 1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 - octahydroisoquinoline is prepared analogously from 4-benzyloxyphenylacetic acid.  Specifications 685,748 and 685,749 are referred to.
Patent GB-627086-A (GB)
Title: Improvements in or relating to electric water heaters
IPC: F24H1/22
Filed: 1947-02-13
Abstract: 627,086. Electric water heaters. ECREMEUSES MELOTTE. Feb. 13, 1947, No. 4222. Convention date, March 1, 1944. [Class 39(iii)] [Also in Group XIII] An electric water heater of the displacement or overflow type comprises an inner tank 10 having a large opening in the bottom, a heat insulating enclosure 11 having a well registering with the opening, a closure member 21 received in the well and making sealing engagement with the tank to close the opening, an electrical heating element 22 and thermostat 23 carried by the member 21, and water inlet and outlet pipes 13, 18 near the top of the tank. Cold water is poured into a receptacle 15 and, when a plug 16 is removed, delivered by the pipe 13 to the bottom of the tank, thereby displacing an equal volume of hot water through the delivery pipe 18. The outlet 18 is provided with downwardly extending parts 17a, 18a, so that the water is drawn down to level 20, but flow does not start again until the water reaches the level of the horizontal part of pipe 18, thereby preventing "dribbling" due to expansion of newly supplied cold water. The inner tank 10 is heat insulated by means of glass wool, cork blocks or other insulating material 12, also by tubes or rings 14, 19 and 27 of plastic or like material, and a felt or like disc 28. The tank 10 is formed of two drawn metal end portions joined by a central annular seam 10c, and all changes in direction of its inner surface are by curves of substantial radius. The tank 10 and shell 11 are pivotally mounted on a three legged stand so that they may be tilted about two of the legs and the closure member 21 removed for cleaning. To allow for irregularities in the floor the legs are provided with rubber cup-like members 34 holding a selected number of spacing discs 33a.
Patent GB-1292701-A (GB)
Title: Improvements in or relating to the thermal hydrodealkylation of alkylbenzene compounds
IPC: C07C4/26
Filed: 1970-01-29
Abstract: 1292701 Benzene GULF RESEARCH & DEVELOPMENT CO 29 Jan 1970 [14 March 1969] 4228/70 Heading C5E The process of Specification 1,165,399 for the thermal hydro-dealkylation of alkylbenzenes to produce benzene is modified by subjecting the effluent from the auxiliary zone, preferably mixed with the effluent for the primary reaction zone, to catalytic hydrogenation to remove unsaturated aliphatic contaminants without significant saturation of benzene. The catalytic hydrogenation may be carried out at 7-70 (preferably 28-42) kg./cm.<SP>2</SP>, 66-329 C. (preferably 302-329 C.) and LHSV of 1-20 (preferably 3-6).
Patent GB-377588-A (GB)
Title: Improvements in or relating to joints for insulated pipes
IPC: F16L59/16
Filed: 1932-02-12
Abstract: 377,588. Pipe joints. COHEN, L., 13, Elisabethstrasse, Duisburg, Germany. Feb. 12, 1932, No. 4241. Convention date, Feb. 14, 1931. [Class 99 (i). In a spigot-andsocket joint for insulated pipes, fluidtightness is secured by a sleeve a of bituminous or like packing and insulating-material, reinforced by a layer of lead, cardboard, &c. b, which is disposed over the joint and extends at each end over the insulation e of the pipes. The sleeve is formed from a sheet which is moulded to conform to the outer development of the pipe ends and then bent around the joint, the abutting edges of the sheet being united by heating. The ends of the sleeve are also heated to connect them to the pipes.
Patent GB-648410-A (GB)
Title: Improvements in or relating to locomotive rail vehicles driven by gas turbines
Inventor: ROESCH GEORGES HENRY
IPC: B61C9/30
Filed: 1948-02-13
Abstract: 648,410. Gas turbine plant. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Feb. 13, 1948, No. 4243. [Class 110(iii)] [Also in Group XXXI] Relates to a gas turbine driven locomotive (see Group XXXI) in which the turbine 41 extends longitudinally of the locomotive and is in driving engagement at each end with a bogie, such engagement including a shaft 50 and reversible gearing. As shown in Fig. 11 air passes into a cleaning and silencing chamber 48 from a longitudinally facing intake in the upper structure of the locomotive and thence through an axial flow compressor 42 into a combustion system 43. The gas then passes through a compressor - driv - ing turbine 44, a curved annular duct 45 to the turbine 41. The gases are exhausted through duct 46 to an inclined trunk 47 and an outlet 49. The locomotive has auxialiary machinery including a centrifugal pump 56 for extracting deposits from the chamber 48, an electric generator 57, both of which are gear connected to the rotor of the compressor 42, and an internal combustion engine 58 which by means of a clutch can either drive one bogie through a shaft 59 for shunting or drive the pump 56, generator 57 and rotor to start the turbine set.. In a preferred form of gearing for the bogies, Figs. 9a and 9b, a driving shaft 1 universally jointed to the shaft 50 is in splined engagement with members 29, 30 and is in fixed engagement with a sleeve 31 having dog formations at each end. Gears 15, 16 can be brought into driving engagement with the shaft 1 by slidable clutch elements 33 and gears 13, 20 can be brought into engagement with the shaft 1 by rotation of levers pivoted at 34. The gears 16, 20 mesh with a gear carried by a shaft 4 gear connected to one axle of the bogie and the gears 13, 15 are similarly connected by a shaft 2 with the other axle. The levers are operated so that either the gears 13, 20 are connected to the shaft 1 and the gears 15, 16 are disconnected or the gears 15, 16 are driven from the shaft 1 and the gears 13, 20 disconnected. The levers on separate bogies are connected for synchronized operation.
Patent GB-229852-A (GB)
Title: Improvements in loaders with vertically movable shovels, for coke, coal, ore and similar materials
IPC: B65G65/28
Filed: 1924-02-19
Abstract: 229,852. Michalski, R. Feb. 19, 1924. Digging-apparatus.-In a shovel of the kind which is filled by pushing it under the heap of material and is then raised and transported to the discharging point, the shovel is supported at two different points by two hoisting elements, one of which is used for raising the shovel and the other for imparting to it the necessary inclination for charging and discharging. The shovel S, Fig. 1, is pivoted in blocks s slidably mounted in arms 11 depending from a traveller T mounted on a bridge crane 1. Rods 12 pivoted to the rear end of the shovel are hinged to racks 13 which are slidable in guides 14 and are engaged by pinions 15. A sleeve 16<1>, Fig. 3, mounted on the shaft 16 carrying the pinions 15, is connected by chain- and-sprocket gearing 17, 18, 19 with a shaft 20 on which are mounted chain wheels 21 engaging chains 22 attached to the blocks s. A chain 30 stretched from side-to-side of the crane is engaged by a chain wheel 27 which, when put into gear with a motor M by actuating a clutch 32, causes the traveller T and shovel S to move along the bridge 10. After the shovel has been filled, the wheel 27 is uncoupled and the clutch 32 moved to cause the shaft 20 to be driven. The clutch 35 is then moved to couple the adjacent gear 17 to the shaft 16, and the shovel is raised. The ratio of the gears 17, 19 is such that when the shovel reaches a given height, it will also have tilted sufficiently to discharge, the contents. In a modification the rods 12 and racks 13 are replaced by chains or wire ropes and chain wheels &c. In another modification, in addition to hoisting ropes 22, Fig. 6, at the front and rack-and-pinion hoisting mechanism at the rear, rack-and-pinion hoisting mechanism is connected to the centre of the shovel. A shaft 47 mounted on the shovel is connected by links 46 to pins 45 mounted in guide blocks 44 attached to racks 64, 65, Fig. 8. Racks 49, 50 pivoted to a shaft 48 mounted near the centre of the shovel are guided by rollers 51 on a bar 52 and gear with pinions 53, 55 on a shaft 54. A lever 66 is provided for sliding the shaft 54 so that either the pinion 53 engages the spurwheel 57 or the pinion 55 meshes with tl.e spurwheel 58. The wheels 57, 58 are geared to spurwheels 60 on the shaft 61 which are attached to pinions 62, 63 engaging racks 64, 65. When the gears 53, 57 are engaged, the shovel attains the discharging inclination at I, Fig. 6, but when the gears 55, 58 are coupled, discharge does not occur until the shovel has reached position II. When the lever 66 is in central position, the racks 49, 50 are both out of action. In another modification suitable for large shovels, a double rack is provided at each side of the shovel, and two sets of gears of different values are provided for engaging the racks.
Patent GB-1049252-A (GB)
Title: Clutches for the transmission of oscillatory motion
IPC: F16D11/00
Filed: 1965-02-01
Abstract: 1,049,252. Clutches for transmitting oscillatory motion. CREED & CO. Ltd. Feb. 1, 1965 [Feb. 5, 1964], No. 4291/65. Heading F2K. [Also in Division B4] A clutch for transmitting oscillatory motion comprises a driving member 1 having a dog 1a engageable in a slot 3a of a member 3 and a driven clutch part 6 having a dog 5a permanently engaged in the slot 3a so that when both dogs 1a 5a are engaged in slot 3a oscillatory motion is transmitted to the part 6. The member 3 is biased to the right by a spring 4 to a position in which the dog 1a engages a slot 3b in which it can oscillate idly so that the driven part is stationary. When the member 3 is shifted to the left for the transmission of motion the dogs wedge against the sides of the slot 3a preventing the withdrawal of the member 3 by the spring 4, a spring 8 (Fig. 2, not shown) between the parts 1, 6 providing a bias preventing release of the member 3 at one extreme position of the oscillatory motion, the clutch only being released at the other extreme position. The clutch may be employed to oscillate a punch frame 11 (Fig. 3, not shown) carrying punch selecting rods 13 which are moved as required into position for co-operation with a set of punches 14 so that the selected punches are operated when the frame is lifted by way of an arm 5 fast with the driven clutch part 6.
Patent GB-327190-A (GB)
Title: Improvements in and relating to valve opening mechanism for prepayment devices for quantity meters
IPC: G07F15/08
Filed: 1928-11-30
Abstract: 327,190. Small, F. G. Nov. 30, 1928. Divided on 325,853. Coin action, mechanical-connection and thrust; fraud, preventing.-In a prepayment device for a gas or other quantity meter' the coin pocket comprises two flanged plates 6, carrying an intermediate plate 9 by means of a pin-and-slot connection 11, 10 and a spring-pressed catch 7 which assists the insertion of a coin through a coin slot 4 arranged on a chord of the price disc 3. The inserted coin depresses the plate 9 so that its projection 12 engages a ratchet wheel 13 operating the valve cam. The flanges 26 on the coin pocket prevent the insertion of a coin in the slot 4 except when the coin pocket and slot register. The coin pocket is rotated by a handle on a spindle 17 which is in relatively non-rotatable engagement with the flanges 26. The handle consists of a boss 14 having wings 15 connected by a web 16, the connection between the boss and the spindle being formed by a ball 24 which is pressed by a spring 22 arranged in the spindle into one of two recesses 25 in the boss according to the direction in which the handle is being turned. A period of lost motion in which the web 16 is moved to cover the coin slot partially or wholly thus occurs when the handle is first turned after the insertion of a coin. The handle is held against the price plate by a spring 18 interposed between a nut 19 on the spindle, and the flanges 26.
Patent GB-1303751-A (GB)
IPC: D01D5/30
Filed: 1970-01-30
Abstract: 1303751 Conjugate polypropylene filaments CHISSO CORP 30 Jan 1970 [31 Jan 1969] 4605/70 Heading B5B [Also in Division D1] A crimpable two-component conjugate fibre is composed of two polypropylene components, one having an intrinsic viscosity, as determined in tetralin at 135‹ C., of 1À49 or more and containing one or more pigments, and the other having an intrinsic viscosity of 1À35 or less and containing no more than 0À5% by weight of pigment. The intrinsic viscosity of the less viscous component is preferably less than 1À20. When heated, for example, by hot steam, the fibres of the invention crimp. The fibres have a percentage shrinkage of at least 20%.
Patent GB-559424-A (GB)
Title: Improvements in the construction of casings or containers for gas and like meter mechanisms and for other purposes
IPC: G01F15/00
Filed: 1942-04-09
Abstract: 559,424. Gas meters. WILSON GAS METERS, Ltd., G., WILSON, J. H., and POOLE, D. C. E. April 9, 1942, No. 4646, [Class 54] [Also in Group XVII] Casings or containers for meters and other purposes comprise side plates 4 and flanged end plates 2 secured together by means only accessible after removing a locked or sealed cover plate 18. In Fig. 3 headed members 5 passing through slots in the side plates and the flanges 3 on the end plates are formed with eyes 7 for the passage of a securing screw 9 which draws them together. In Fig. 4 headed members 11 similarly arranged may be drawn together by a left- and right-hand screw-threaded turn-buckle 14. The headed members may also pass through uptume flanges on the bottom plate 15 or the bottom plate may be loosely supported by flanges 17 on the side and end plates. The invention may be applied to the gas meters described in Specification 559,425.
Patent GB-490604-A (GB)
Title: Improvements in or relating to garment pockets
IPC: A41D27/20
Filed: 1937-02-17
Abstract: 490,604. Garment pockets. BAYLY, W. E. P. Feb. 17, 1937, No. 4752. [Class 141] In a garment having a pocket opening formed at the adjoining edges of a pair of garment sections 11, 12, a pocket 16 has one of its open side edges 18' secured to the fold of the garment section' 11, and a tape 22 is secured to the other open side edge 21 of the pocket, and to the fold 14 of the garment section 12 in the region of the pocket opening, and to the edges of both layers of the pocket below the pocket opening. A finishing strip 24 is secured to the inner face of the pocket layer which is secured to the fold 14, and has one of its side edges disposed within the folds of the tape 22. In a modification, the finishing strip is secured to the inner face of the pocket layer which is secured to the fold 14, and has one of its side edges abutting the fold.
Patent GB-1457798-A (GB)
Title: Cathode-ray tube
IPC: H01J29/88
Filed: 1974-02-01
Abstract: 1457798 Cathode-ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 1 Feb 1974 [21 Feb 1973] 04791/74 Heading H1D In a cathode-ray tube with a conducting layer 4 on the inner surface of the envelope, layer 4 is connected to the final anode(s) 11 via a resistor wound on a cylinder body 18 coaxial with the tube. The colour tube shown has three electron guns for use with a shadow-mask. The final anodes 11 are welded to an apertured plate 15, in turn welded to a sleeve 16. The resistance wire 19 is wound around the body 18 and connected between a contact band 21, connected to sleeve 16, and a contact band 20 connected to contact fingers such as 22, 23 whereby contact is made to the layer 4. The body 18 is made of ceramic and has a small conductivity, which may be provided by a layer of graphite.
Patent GB-556489-A (GB)
Title: Improvements in, or relating to, liquid cooling systems for internal combustion engines, and like purposes
IPC: F01P11/02
Filed: 1942-04-13
Abstract: 556,489. Cooling systems for engines. AUSTIN MOTOR CO., Ltd., and CHARLES, H. N. April 13, 1942, Nos. 4810 and 7275. [Class 64 (iii)] A thermostatically operated valve C cuts off the return flow of water from an engine jacket A to the top of a radiator F<1> when the cooling water is cold and allows the water to flow to the return pipe h at the bottom of the radiator through a by-pass K which enters a down pipe communicating with the return pipe and provided at its top with a small vent tube j. The byepass has a vent k opening into the down pipe. As the temperature of the water rises the valve C opens and the flow through the byepass is cut off. The return passage G is relatively wide, and a plate g extends downwards between the bottom header f<1> of the radiator and the passage to lessen the rate of flow of the water through the passage.
Patent GB-548592-A (GB)
Title: Improvements in and relating to apparatus for producing ultra-violet radiation
IPC: A61N5/08
Filed: 1941-04-11
Abstract: 548,592. Overhead lamps. HANOVIA, Ltd., KOLBERT, J. W., and HAEGELE, F. G. A. April 11, 1941, Nos. 4833/41 and 6299/42. [Class 75 (iv)] [Also in Group VI] A source of ultra-violet radiations is associated with a ray-projecting system which projects a beam upon a surface to be irradiated that is hollow or annular; an illuminating lamp, for example an operating theatre lamp, may be used with the source to give a shadowless patch of light surrounded by the hollow or annular ultra-violet beam, the light illuminating an operation wound and the ultra-violet radiations eliminating or diminishing the risk of germs entering the wound. As shown the source of the ultra-violet radiation is a two-part low pressure mercury discharge tube 6 circular in plan mounted around the upper end of a frustoconical screen 7 supported on a base plate 15 serving as an obturating element and provided with slots 16 spaced at close intervals just outside the base of the screen which is punched or stamped to provide radial baffle plates 17 positioned above the strips 18 separating the slots 16; the beam extends as a hollow diverging beam from the slots 16 and forms a clearly defined annulus 9 surrounding the patch of light 4 cast by the illuminating lamp 1 the rays'from which are reflected from a reflector 12 ih the hood 2 to form a shadowless patch of light 4 within the annulus 9; the base plate 15 supports the holder 16 for the lamp i and its reflector 13 and emergency bulbs 29 may be carried oh brackets 30. In a modified arrangement the tube 6 is disposed above the lamp 1 and the slots for the passage of the beams may be formed in the outer casing of the lamp. The baffles 17 may be formed by channel-shaped members mounted on the screen. The plate 15 is secured to the frame member 26 carrying the hood 2, and the transformers 24, controls, and contact block 25 are secured thereto to balance the irradiating apparatus which is enclosed by a screen 28. A spot light mounted in the handle 31 and enclosed by a lens and pivoted closing plate 38 is provided for use in centralizing the ultra-violet rays. According to the first Provisional Specification the irradiating beam may be formed by reflection from the hood 2.