baber/WOPTO huggingface dataset:
Patent GB-1043163-A (GB)
Title: Method and apparatus for cleaning workpieces
IPC: B24C9/00
Filed: 1963-04-25
Abstract: 1,043,163. Tumbling; blasting. BELL INTERCONTINENTAL CORPORATION. April 25, 1963 [May 11, 1962], No. 16288/63. Heading B3D. Apparatus for rough cleaning and subsequent finish cleaning of castings etc. comprises a blast cabinet 10 having a cradle type conveyer 12 for tumbling a load 15 of castings and blast unit 16 for throwing shot or other blast media against the castings. The cabinet 10 is connected by conveyer 20, elevator 22 and conveyer to a separator 28. This has a spout 29 delivering into a take-away device 30 and a shoot 32 connected by elevator 34 and conveyer 36 to a separator 37 delivering reconditioned media to a hopper 18 supplying the blast unit 16 through a valve 40. The conveyer 36 is also connected through a valve 42 with a bin 44 connected through a valve 46 with the elevator 22. Castings stripped from their moulds are loaded into the cabinet 10; valves 42, 46 are open. If the castings contain appreciable quantities of loose sand or other core or mould debris, they are first tumbled for a predetermined time to cause the materials to fall out of the castings. The blast unit 16 may or may not remain idle as preferred. Refuse passes to the separator 28 from which much of it is discarded at 30, the remainder passing to the bin 44 from which it flows at reduced rate to the elevator 22 for repass through the separator 28 whereby further refuse is removed until substantially all the refuse has been discarded. Then blast unit 16 is activated if not already. When the bulk of the initially dislodged surge of refuse has been discarded and/or absorbed by the bin 44 valve 42 is closed. Throughout this phase, valve 46 is controlled to permit only a reduced flow and as the amount of refuse dislodged from the castings decreases, the separators 28, 37 catch up with the refuse backlog and the percentage of refuse in the mixture being handled by the separators falls off rather sharply. Figs. 2 (not shown) and 3 (not shown) illustrate modified arrangements.
Patent GB-1212023-A (GB)
Title: Removal of sodium bicarbonate from an organic medium
Inventor: DIPROSE GEORGE
IPC: C01D7/14
Filed: 1967-04-10
Abstract: 1,212,023. Hydrodimerization process. IMPERIAL CHEMICAL INDUSTRIES Ltd. 13 Feb., 1968 [10 April, 1967], No. 16359/67. Heading C2C. [Also in Division C1] In a process for the hydrodimerization of 2-#-mono-olefinic nitriles or carboxylic esters as described in Specifications 1,157,445 and. 1,212,021, the resulting dimer is separated from a suspension of sodium bicarbonate in the organic phase by adding to the suspension sodium carbonate and, if necessary, water in proportions required to convert at least part of the sodium bicarbonate to sodium sesquicarbonate and separating a solid comprising sodium bicarbonate and sodium carbonate at least partly in chemical combination.
Patent GB-769789-A (GB)
Title: Improvements in or relating to rotary pumps or compressors
IPC: F04B45/08
Filed: 1955-06-08
Abstract: 769,789. Rotary pumps. MACDONALD, N. M. June 8, 1955, No. 16415/55. Class 110(2). A pump or compressor as described in Specification 731,559 having one or more rollers 15 and having one or more inner fluid conducting tubes 17 enclosed in an outer tube 18, the space between the inner tube or tubes and the outer tube being sealed and filled with a constant volume of hydraulic medium to help restore the inner tube or tubes to their original shape after the passage of a roller. In the embodiment in Fig. 1 a single inner tube 17 floats freely inside the outer tube 18 which has its ends sealed to the periphery of the inner tube 17 at 20. The rollers 15 are pivoted to arms 13 by arms 14 and are pressed against the tubes by the centrifugal effect during rotation. In a modification, Fig. 5, the tubes 17, 18 are bolted to the pump casing 5c.
Patent GB-393754-A (GB)
Title: Improvements in boiler feed systems
IPC: F22D5/10
Filed: 1932-06-11
Abstract: 393,754. Feedwater regulators for steam boilers. WEIR, Ltd., G. & J. and SIM, J., Holm Foundry, Cathcart, Glasgow. June 11, 1932, No. 16542. [Class 123 (ii).] The feed supply from a constant speed reciprocating pump B is controlled by a pressure operated byepass valve J between the discharge and suction sides of the pump, and by a floatoperated valve N in the pump discharge pipe. The release of the pressure fluid from beneath a piston P operating the byepass valve is so controlled by a float-operated valve E that when the boiler water level rises and the valve E is closed, the pressure beneath the piston opens the byepass valve against the load of a spring R. When the pump supplies a number of boilers, the space beneath the piston P is connected to a float-operated valve E on each boiler, and the byepass valve therefore does not open until the desired water level has been reached in all the boilers. A valve F on the spindle of a valve E and set to open after the valve E controls the escape of pressure fluid from beneath a piston S on a feed valve N, which closes when the water level in the boiler with which it is associated rises slightly above that at which the valve E closes. In a modification, the valves E, F of a boiler are operated by a float in a chamber arranged above the boiler and connected to the boiler steam space and to the feed discharge pipe. In a further modification, the valve E is controlled by a float responsive to the change of level in a receiver for excess feed arranged above the boiler, and the feed valve is operated directly by a float responsive to the change of boiler water level.
Patent GB-1367390-A (GB)
Title: Shot blasting device
IPC: B24C3/06
Filed: 1972-04-11
Abstract: 1367390 Blasting G SHIGYO 11 April 1972 [10 Dec 1971] 16579/72 Heading B3D A device for blasting the surface C of a ship's hull or a tank comprises a frame 40<SP>1</SP>, an opening 12 from which a blast of shot can be ejected to impinge on and clean the surface, blast means 1 for causing the blast, recovery means whereby shot which has impinged on the surface can be separated from detritus from the surface and returned to an inlet 8 of the blast means, and means whereby the device may be held in close engagement with the surface to be shot blasted. The device may be supported by a rope 42 and hook 41 from the jib of a crane movable along a dock wall or by apparatus movable along a rail on the top of the tank. The blast means consists of a centrifugal wheel having blades 3 which is supported by a shaft 6 mounted in a bearing block 5 and driven by a motor 7, the wheel being disposed in a casing 2 supplied with shot from a hopper 8 and shoot 9. The casing has an opening 11 leading to a slot 12 through which the blast impinges on the surface C. A passage extends downwardly from the slot to a passage 21 for receiving spano shot and detritus, the passage also communicating with a pair of openings 14, 15 below the opening 12 for collecting shot and detritus which passes a seal around the opening. A dust collection rectangular slot 13, 16, 17, 18 surrounds the openings 12, 14, 15. The spent shot falls through passage 21 into a conveyer comprising a circular runner 25 of U-shaped cross-section and formed with blades 28, the runner being disposed in a similarly-shaped housing 22 and supported by rollers 26, one of which is driven by a motor 27. The conveyer transports the shot from the passage 21 to the hopper 8. Alternatively, a bucket, case or screw conveyer may be used. Dust and other detritus passing through passage 21 is sucked through an aperture 70 into a passage 30, which is also connected to the dust collecting slot 13, 16, 17, 18, and to a rotary blower 29, in turn, connected to a cyclone wire mesh 31 where scale and paint chips fall to a container, the air passing through an exhaust pipe 34. A rust removing device 36 is mounted above the opening 12 and consists of a double row of bundles of hard parallel wires 39 which are reciprocated by an air supply which also passes between the needles. The means for holding the device in close engagement with the surface may consist of suction pads or, as described, magnets 53 which are resiliently mounted on plates 52 carried by a common plate 48. The magnets are held slightly spaced from the surface by ball casters 65 or roller chains 45 so that the device can move horizontally and vertically over the surface. The chains 45 are mounted on sprocket wheels 44 driven by a motor 56.
Patent GB-709867-A (GB)
Title: Improvements relating to scrap packaging and baling presses
IPC: B30B9/32
Filed: 1952-07-01
Abstract: 709,867. Baling presses. LINDEMANN, W. July 1, 1952 [July 11, 1951], No. 16586/52. Class 94 (1) A press box for a packeting or baling press has edges 3 of zig-zag or wavy form, as viewed in side elevation, for supporting the projecting material 4 which has to be cut off by the cover 1 and knives 5 disposed inside with their cutting- edges approximately on a level with the lowest points of the zig-zag or wavy edges 3. Knives 2 secured to the cover 1 co-operate with the knives 5. The knives 5 are held in position by clamping bars 6, having zig-zag or wavy projections 3, adjustably bolted to the sides of the box. A knife may also be provided in the side of the box opposite the cover edge.
Patent GB-514762-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H01J43/02
Filed: 1938-06-03
Abstract: 514,762. Electron multipliers and circuits therefor. FERRANTI, Ltd., and TOMLIN, G. M. June 3, 1938, No. 16630. [Classes 39 (i) and 40 (v)] A thermionic amplifier of the type employing a thermionic valve having a cathode, a control electrode, an accelerator electrode, an anode and an additional electrode at which secondaryelectrons are produced when it is bombarded by primary electrons of sufficient velocity has potentials applied to the electrodes of the valve such that useful primary electrons impact on the additional electrode and is provided with means for varying the mutual conductance of the valve without varying the interrelationship between the potentials. This means may comprise a variable resistance in series with the high tension supply or a potentiometer connected across it. In the example shown, resistances 8, 11 and 12 of 5,000, 60,000 and 40,000 ohms and 17, 18, 19 of 1,300, 20,000 and 120,000 ohms are connected in series between the slide and earth and form two paths across the high tension supply P.N. The junction of 12 and 11 is connected to this screen-grid 4, and the junction of 11 and 8 to one end of the secondary winding 7 of an intermediate frequency transformer, the other end of which is connected to the control grid 3. The junction of 17 and 18 is connected to the cathode 2 and of 18 and 19 to the additional electrode 6. These paths form potential dividers across the source and since the total resistance of 8, 11 and 12 is less than that of 17, 18 and 19 the potential developed across 17 (1,300 ohms) is less than that across 8 (5,000 ohms) while the valve warms up and the control grid 3 is more positive than the cathode 2. When the valve becomes conducting it forms a path in parallel with the resistances 18 and 19 and the potential developed across 17 therefore increases and the control grid gradually becomes less positive to the cathode. The mutual conductance of the valve may be varied by means of the variable resistance 14 and the resistances of the sections of the two potential dividers are so chosen that when steady conditions are reached the relationship between the electrode potentials is such that secondary electrons are produced at the auxiliary electrode.
Patent GB-778715-A (GB)
Title: Improvements in or relating to hydraulic pit props and the like
IPC: E21D15/51
Filed: 1953-06-17
Abstract: 778,715. Hydraulic jacks. GULLICK, Ltd., and SEAMAN, T. June 17, 1954 [June 17, 1953], No. 16675/53. Class 78 (3). [Also in Groups X and XXIX] A relief valve for an hydraulic jack, e.g. a pit prop, comprises a loose ball valve 17, Fig. 1, subjected in the valve closing direction to the pressure within the prop 11 transmitted through a duct 23 assisted by a spring 21 and in the valve opening direction to the pressure within the prop acting on a diaphragm 14 of larger effective area than that of the ball 17. In a modification, the diaphragm is replaced by a piston loaded by a spring against internal prop pressure, the ball in this case being loaded by a very light spring. In a further modification, in which pressure liquid is supplied to the prop through an inlet nozzle 31, Fig. 3, ducts 32, 32a, 32b and a manually-operable valve 33, the ball is replaced by a valve member 39 acted upon by the loosely fitting stem 45 of a piston 45a of larger area than the valve member 39. Specification 720,361 is referred to.
Patent GB-443775-A (GB)
Title: Improvements in and relating to protective devices for electrical apparatus
IPC: H02H5/00
Filed: 1934-06-05
Abstract: 443,775. Protective cut-out arrangements. ALTHAM, T. F., 43, Garrick Close, and HACKBRIDGE ELECTRIC CONSTRUCTION CO., Ltd., Hersham, both in Walton-on- Thames. June 5, 1934, No. 16694. [Class 38 (v)] Electrical apparatus is associated for protective purposes with one or more condensers included in a thermionic valve circuit in such manner that undesired conditions in working of the apparatus will alter the capacity to vary the functioning of the circuit and to influence, directly or through relays, indicating or recording devices or alarm or trip mechanism. In the application to an oil - immersed transformer, a condenser 4 (or condensers) is housed in a chamber 3 in the connection to the conservator 8, the chamber having a valve 5 for ensuring its being filled with oil. On fault, the oil is replaced by or mixed with air or gas and the capacity-change detunes a thermionic valve oscillator 10 connected to the alarm or trip device or relay. The change of capacity will also indicate leakage of oil from an oilfilled piece of apparatus and may be adapted to the determination of liquid-level, and hence the quantity of gas, in a vessel. The condensers may be arranged to be short or open-circuited by means influenced by the pressure wave set up on severe faults. The valve circuit may form part of a heterodyne wavemeter with the condensers and responsive devices in the feed back or anode circuit.
Patent GB-1024801-A (GB)
Title: Stabilized compositions based on polyoxymethylene
IPC: C08K5/21
Filed: 1963-04-29
Abstract: Thermally stable compositions comprise a high molecular weight solid polymer or copolymer with -CH2O-units recurring in the polymeric chain and from 0.001 to 15% by weight of a mono-allophanic ester of a phenol or bisphenol as a stabilizer. The preferred polymers are those obtained from aqueous or anhydrous formaldehyde or trioxan and having an inherent viscosity of at least 0.3.  The polymethylenes may be terminally blocked by acyl or ether groups.  The formaldehyde may be copolymerized with dimethylketene. Stabilizers specified are phenyl, p-hydroxyphenyl and 2,6-di - t - butyl - 4 - methylphenyl allophanates and the mono-allophanates of 4,41-isopropylidene - bisphenol, 4,41 - butylidene - bis - (6-t-butyl - 3 - methylphenol) and 2,21 - methylene-bis - (4 - methyl - 6 - t - butyl phenol). Known stabilizers may additionally be present, e.g. diphenylamine and 4,41 - butylidene - bis - (6-t - butyl - 3 - methyl - phenol).  The compositions may also contain plasticizers and pigments.
Patent GB-861352-A (GB)
Title: Fire guards of radiant-type oil heaters
Inventor: WIGGIN HAROLD
IPC: F24C15/36
Filed: 1958-05-27
Abstract: 861,352. Fireguards. VALOR CO. Ltd. May 27. 1959 [May 27, 1958], No. 16807/58. Class 126. [Also in Group XXV]. A radiant oil heater has an openwork guard 13 hingedly mounted on it, catch means on the side of the heater opposite the hinge comprising a self-closing guard retainer 19 and a guide clip 18 adapted to direct a striker 24a on the guard into engagement with the retainer 19 which is deflected by the striker engaging a cam face 28 as the guard closes. The clip 18 comprises a pair of fingers 18a with a convergent space S between them which receives the lower limb of a U-shaped wire loop 24 the upper limb of which constitutes the striker 24a. The edge 25 of the guard engages bent portions 26 on the fingers 18a as the guard closes, and is finally retained behind them. The retainer 19 and clip 18 are mounted on a bracket 20 secured to the rear face of the heater casing 10 and project through holes 22, 23. If the guard is hinged at its upper or lower edge, the retainer is spring-urged into hooked engagement with the striker 24a.
Patent GB-585424-A (GB)
Title: Improvements in or relating to laundry washing apparatus and machines
IPC: D06F13/00
Filed: 1944-09-05
Abstract: 585,424. Washing-machines. WATTS, E. L. Sept. 5, 1944, No. 16921. [Class 138 (ii)] A mechanical agitating device for laundry purposes comprises perforated plates pivotally connected together along their adjacent edges so as to form an open ended box or frame which can be expanded and contracted by the application of forces to appropriate points on opposite sides to vary its cross-sectional shape and area. As shown the device consists of four perforated plates J which may be flat, curved, corrugated or otherwise bent, and are pivotally connected along their adjacent edges at J<1> to form an open ended box. The device is located in a wash tub A and is expanded and contracted by powerreciprocated rods H<1> to vary its cross-sectional shape from rectangular to diamond. To prevent the clothes being trapped, the bottom of the device may be closed by a diaphragm and the edges of the plates may be pivotally connected through rounded intermediate members. The wash tub is divided vertically into three compartments by a perforated plate A<1> and filter C. The upper compartment contains the squeezing device and the central compartment contains an immersion heater B, while the lower compartment acts as a sump from which water is drawn by a pump and delivered to the top of the tub.
Patent GB-377788-A (GB)
Title: Improvements in connection with ventilating systems
IPC: F24F13/14
Filed: 1931-06-11
Abstract: 377,788. Pivots. COOPER, F. L., The Hollies, Malden Road, Cheam, Surrey, and JEFFREYS & CO., Ltd., J., Barrons Place, Waterloo Road, London. June 11, 1931, No. 16998. [Class 65 (ii).] A damper for ventilation purposes is mounted in bearings capable o being operated to lock it in a desired position. The damper consists of a metal plate A fixed to a flat bar a<1>, the ends of which project beyond the edges of the plate and form the pivots by which the damper is mounted in its bearings b<1>, b<2>. One end a2 is formed circular in cross section and the other end a<3> is slightly rounded on its longitudinal edges. The bearing b<1> is tapped to receive a screwed sleeve b<3> in which the pivot a2 is mounted. The sleeve is formed with a recess b<4> adapted to be engaged by a special tool by which it may be rotated to bear tightly against the butting end of the rod a<1> and lock the damper in position.
Patent GB-1093065-A (GB)
Title: Improvements in or relating to lens systems
IPC: G03G15/04
Filed: 1966-04-19
Abstract: 1,093,065. Optical objectives. EDNALITE CORPORATION. April 19, 1966 (April 22, 1965], No. 17077/66. Heading G2J. An objective of focal length F, particularly for use in the electro-photographic reproduction of fluorescent images displayed for limited times of the order of 1 /1, 000 second and consisting of a singlet 1, two cemented doublets 2, 3, and'4, 5, and two singlets 6, 7, is characterized in that:- Optical data are provided for the example shown which is so mounted in a barrel 11 that elements 1-3 are inserted from one end and elements 4-7 from the other end and are located off machined surfaces on both sides of a central flange 12.
Patent GB-1038416-A (GB)
Title: Improvements in and relating to direct-current-controlled setting systems
IPC: H02P7/03
Filed: 1964-04-24
Abstract: 1,038,416. Transistor amplifiers; tuning control. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 24, 1964 [April 27, 1963], No. 17085/64. Headings H3Q and H3T. [Also in Division H2] The tuning member 12 of a radio receiver is driven through reduction gear 11 by D.C. motor M having constant field excitation and its armature connected in an output circuit of a difference amplifier comprising transistors T1-T4, the input terminals E1, E2, of the amplifier receiving an error voltage (e.g. the difference between the voltages of two potentiometer tappings) which represents the displacement of the timing member from a desired stopping- position. The armature of the motor may be shunted by a damping resistor formed by transistor T5. As the stopping-position is approached, the current passing through resistor R9 is reduced so that transistor T5 is rendered conductive for braking the motor and preventing over-run. Deviation from a stopping- position causes a voltage to be developed across resistor R9 whereby transistor T5 becomes non- conductive to remove the braking-effect. When the motor is driven in the opposite direction. it passes through the stopping-position and is not braked until it has reversed its direction of rotation.
Patent GB-1221965-A (GB)
Title: Improvements in or relating to circulating water heaters
IPC: F24D19/10
Filed: 1968-04-10
Abstract: 1,221,965. Central heating systems; controlling burners. JUNKERS & CO. G.m.b.H. 10 April, 1968 [12 April, 1967], No. 17155/68. Headings F4T and F4U. [Also in Division G3] A gas-fired circulating water heater for heating installations comprises a water deficiency safety device 14 having two pressure chambers 16, 17 isolated from each other and adapted to cut off a gas supply 12 in dependence upon the pressure difference between the chambers, and an electrically driven water circulating pump 25 controlled by means E which, in dependence upon a variable such as the temperature of a space to be heated, momentarily switches off the pump at short intervals of time to reduce the pressure difference between the chambers 16, 17 and cut off the gas supply. The means E may be an electrical time switching device provided with R-C timing circuits or it may be a mechanical or electro-mechanical time switch periodically actuating an electrical switch or relay. A space thermostat or a forward flow thermostat may control the operation of the means E and the pulses produced by the pump are sufficient to maintain circulation in the installation when the burner is cold without open ing a valve 13 in the gas supply 12. An expansion tank 27 is provided between the heating elements 23 of the installation and the pump 25.
Patent GB-612913-A (GB)
Title: Improvements in and relating to the manufacture of bread and the like
IPC: A21C9/08
Filed: 1946-06-06
Abstract: 612,913. Bread-making plant. KINGDON, E. H. G., and BAKER PERKINS, Ltd. June 6, 1946, No. 17175. [Class 28(i)] [Also in Group XXX] In bread manufacture a dough divider, to reduce wear, is operated at half speed and set to deliver double weight, e.g., 9 oz. pieces of dough, which are then handed up and fed into the tray pockets of a lapped endless chain tiltable tray prover provided near the first turn of the conveyor with tray tilting means and laterally inclined chutes arranged to deposit the dough pieces of each tray in pairs in tray pockets of the conveyor lap beneath. The dough pieces, thus proved singly for a period, and then in pairs which fit together, may then be moulded for producing 1 lb. loaves or may be combined in pairs again for producing 2 lb., e.g., twist. loaves. The trays are inverted by a pivoted roller 14, Fig. 4, moved into operative position by worm and quadrant gears and mounted on a bracket 19 adjustable in position. Dough pieces of the inverted tray alternately fall vertically or along inclined chutes 11, Fig. 2, to form pairs in pockets 5 of the tray beneath. Specification 400,619 is referred to.