baber/WOPTO huggingface dataset:
Patent GB-1514953-A (GB)
Title: Exposure control systems
IPC: G03B7/093
Filed: 1975-08-13
Abstract: 1514953 Camera shutter-diaphragm control WEST ELECTRIC CO Ltd 13 Aug 1975 [20 Aug 1974 18 Oct 1974] 33659/75 Heading G2A An exposure control system comprises a shutterdiaphragm 31, 32 coupled to a rotor 1, a stator 2 comprising pairs of poles (3 to 7') Fig. 1 (not shown) mounted within respective pairs of field coils (8 to 12'), switching circuit 40 Fig. 6 having switches 45 to 48 for energizing the coils, an aperture setting circuit 49 for determining which switches 45 to 48 are actuated, and an exposure time setting circuit 58 for determining how long the switches 45 to 48 are actuated, the setting - circuits 49, 58 being controlled according to subject brightness. As shown, on shutter release a pulse generator 57 is started and flip-flops 41 to 44 receive the pulses and enable one or more of the switches 45 to 48 accordingly. When a light integrator 52 turns on a transistor 54 generator 57 is shortened and a relay 63 is energized to close a switch 64 and energize the enabled switch(es) 45 to 48. Thus one or more pairs of field coils are energized, the rotor 1 rotates to a position determined thereby (either clockwise or anticlockwise depending on which coils are energized), and a pin 24 or 25 on rotor 1 moves a cam 39 or 38 to operate a drive lever 28 and thereby open blades 31, 32 to define the selected aperture. When transistor 54 is turned on it also turns on a transistor 62 to initate integration in the exposure time setting circuit 58. When integration is complete, a transistor 59 is turned on to reset the flip-flops 41 to 44 whereby the switches are turned off and the coils de-energized. Also transistor 59 energizes field coils at the initial position of the rotor 1 to return the rotor and thereby close the blades 31, 32. In a modification, Fig. 8 (not shown), comparators (63 to 66) compare the output of a photo-cell (85) with respective reference levels and select switches (75 to 78) accordingly.
Patent GB-759779-A (GB)
Title: Improvements in or relating to pump priming means
IPC: F04D9/04
Filed: 1953-12-04
Abstract: 759,779. Centrifugal pumps. SHARE, B. Dec. 4, 1953, No. 33777/53. Class 110(1) A priming pump is movably mounted so as to be biased away from the main pump to establish a driving connection; upon attainment of a pre-set valve of the discharge pressure of the main pump, means responsive to the discharge pressure move the priming pump towards the main pump to disconnect the drive. The priming pump 25 is pivotally mounted on a plat- - form 24, a spring 30 keeping the driving belt 31 at the proper tension. The priming pump 25 draws liquid through a flexible pipe 22 from a chamber 16 in communication with the discharge 12 of the centrifugal main pump 10, and discharges it through a pipe 29. On completion of priming, a float valve 20, pivoted at 17, closes an opening 21 to interrupt the flow of liquid to the priming pump 25, and a spring-biased valve 15 opens to permit flow of liquid to the discharge pipe 14. The discharge pressure of the centrifugal pump 10 is communicated through a pipe 45 to a chamber 35 where it acts on a flexible diaphragm 40. Movement of the diaphragm 40 in response to the discharge pressure is communicated by a link 41 to the priming pump 25, which is swung about its pivot against the action of spring 30 to remove the driving tension from belt 31. Guards 34, 36 prevent displacement of belt 31 when the latter is slack. The pressure in the chamber 35 relative to the discharge pressure of pump 10 is adjustable by means of a valve 42 in the pipe 45 and a valve 44 at an outlet 43. These valves may be manipulated either to keep the priming pump 25 in continuous operation or to render it inoperative. Specification 759,780 is referred to.
Patent GB-1271979-A (GB)
Title: Process for preparation of tunnelling barriers
Inventor: PRITCHARD JOHN PAUL JR
IPC: C23C8/36
Filed: 1969-07-04
Abstract: 1,271,979. Josephson junctions. TEXAS INSTRUMENTS Inc. 4 July, 1969 [8 Aug., 1968], No. 33853/69. Heading H1K. [Also in Division C7] A device including two metal films with a tunneling barrier interposed therebetween is produced in a vacuum chamber by bombarding the surface of the first metal film with ions of a gas ionized by an A.C. glow discharge to produce a reaction which forms an insulating layer and evaporating the second metal film on to the insulating layer such that it forms a tunneling barrier between the metal films. In a specific example, a control conductor 48 having thereon an insulating layer 46 is coated with lead 44 and an insulating layer 50 having a window 52 is deposited on 44 using photoresist techniques. This body is introduced into a vacuum chamber which is flushed with Ar or He and evacuated, and a glow discharge is established to clean the Pb surface, which may be heated to 80 C., by ion bombardment. The Ar or He is evacuated, and reactive gas, which may be O 2 , N 2 , or organic vapour, is introduced and a discharge established so that an insulative coating 54 of lead oxide, lead nitride, or an organic substance, e.g. about 10  thick, is formed on the lead 44 after which the discharge is terminated and a further layer 56 of lead is deposited by holding the body above a funnel'which contains a lead vapour source. Instead of Pb, the metal layers may be of Sn or a type-I or type-II superconductor.
Patent GB-1076417-A (GB)
Title: Improvements in furnaces and an improved method of sintering pelleted fly ash or the like
IPC: C22B1/24
Filed: 1964-08-20
Abstract: 1,076,417. Shaft furnaces. P. C. COOMBES. Aug. 19, 1965 [Aug. 20, 1964], No. 34070/64. Heading F4B. In a shaft furnace for sintering pelleted fly ash, sets of wall blocks 7 are mounted on pairs of driven continuous chains 21, 22, and pellets are charged in turn through hopper 49, shoot 50 and hopper 48 with a central feed shoot 51, said pellets being discharged through a rotary grate 38 driven through bevel gearing 45 at such a speed as to control the firing temperature at 950-1000‹ F. The grate speed is controlled by a resistance thermometer 59, Fig. 9 (not shown), mounted above the grate and connected to a controller included in a Wheatstone bridge network controlling relays affecting the grate drive motor. The blocks 7 have arcuate inner faces 8 and are detachably secured to the chains 21, 22 extending over upper and lower sprockets 23, 24 whose respective shafts 25, 26 are connected by bevel gearing and driven either manually or by power, Fig. 3 (not shown). Gas offtakes 52 disposed symmetrically around hopper 48 lead to a collecting chamber 53 and a motordriven fan and a damper, Fig. 9 (not shown), are disposed in the flue 54. Thermocouples at various heights in the charge material are connected to a series of temperature indicators. The conical grate 38 comprises a number of flat triangular plates (39), Fig. 6 (not shown), providing ridges (40) at their junctions and being perforated for the passage of combustion air drawn in during operation by the fan in flue 54. A ring 34 has a lip 36 extending inwardly and upwardly below the grate periphery.
Patent GB-282670-A (GB)
IPC: D01F2/04
Filed: 1927-12-16
Abstract: 282,670. Grunert, K., (Assignee of Grunert & Giannetti). Dec. 24, 1926, [Convention date]. Ammoniacal-copper solutions; apparatus for making filaments.-The coagulating-liquid is not de-aerated but air or other inert gas is bubbled therethrough. The bubbles of the added gas carry off the larger bubbles present in the coagulating- liquid and there remain in the latter only the smaller bubbles which have no injurious effect on the formation of the filaments &c.
Patent GB-1113034-A (GB)
Title: A gas-blast circuit breaker with a gas container and a gas control valve
IPC: H01H33/80
Filed: 1965-08-11
Abstract: 1,113,034. Gas blast switches. LICENTIA PATENT-VERWALTUNGS G.m.b.H. 11 Aug., 1965 [13 Aug., 1964], No. 34352/65. Heading H1N. [Also in Division F2] In a blast valve for supplying compressed air from a tank 1 to a conduit 3, leading to electrical breaker points, by means of an openended closure 4 which is reciprocated by compressed air acting on a piston 5, the valved ports 6 are provided in a recess 10 around cylindrical valve wall 9 whereby seat sealing " O "-rings carried by the closure 4 do not contact the edges of the ports 6. In an alternative arrangement (Fig. 2, not shown), the compressed air is supplied from the interior of the cylinder 9 successively to two different breaker points, e.g. a parallel breaker point associated with a power breaker point, via two rows of ports 13 and 14 contained in the same cylindrical wall recess.
Patent GB-1240487-A (GB)
Title: A method of producing moulds for the processing of ceramic compositions and moulds when so produced
IPC: C08K3/013
Filed: 1968-07-18
Abstract: 1,240,487. Making moulds. C. M. HUTSCHENREUTHER ZAHNFABRIK. 18 July, 1968 [21 July, 1967], No. 34376/68. Heading B5A. [Also in Division C3] A porous mould is made by mixing an inorganic filler of particle size 0À09-0À6 mm. and surface hardness greater than that of plaster of Paris with a binder comprising at least one organic synthetic resin that evolves a gas on curing, the mixture is moulded under pressure to form a mould, and then the synthetic resin(s) is cured, the gas given off thereby rendering the binder porous. The resin may be a phenolic, urea or melamine resin, e.g. a liquid phenolic resol or solid phenolic resin, e.g. novolachexamethylene tetramine, modified melamine or a rezorcinol-formaldehyde resin with an aldehyde hardener. The filler may be quartz sand, felspar and/or alumina. The moulding may be carried out in an hydraulic press.
Patent GB-409817-A (GB)
Title: Improvements in or relating to railway and tramway tracks
IPC: E01B9/68
Filed: 1932-12-06
Abstract: 409,817. Securing railway rails to sleepers. DAVIES, B. S., Wyndcote, Horsell Rise, Woking, Surrey, and SUMMERS, P. A., Micklehurst, Grove Road, Osterley, Middlesex. Dec. 6, 1932, No. 34574. [Class 104 (ii).] A pad k of sponge rubber or expanded rubber is arranged between the rail g and the sleeper, preferably in a chair m, and similar pads e are arranged between the chair jaws h and the rail flanges i. In another form, the pad k rests in a recess in the top of the sleeper and is covered by a chair plate. In another form it is enclosed between a plate resting on the sleeper and an upper plate supporting the rail.
Patent GB-348554-A (GB)
IPC: G01R31/50
Filed: 1929-11-13
Abstract: 348,554. Inductance, capacitance, and frequency measurements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Becker, H. I. ; 1036, Garner Avenue, Schenectady, New York, U.S.A.) Nov. 13, 1929, No. 34632. Convention date, Nov. 13, 1928. [Class 37.] The component elements of a tuned circuit are tested by generating oscillatory currents having a frequency range which includes the resonant frequency at which the elements are adjusted, the indicator in the detector output being driven in synchronism with the frequency changes and being energized by the tuned circuit. In one arrangement, Fig. 1, the oscillation generator comprises a thermionic tube 5 having grid and anode coils 6, 7 and condenser 8. The condenser 8 is varied through a predetermined range by a motor 13 which also drives a mirror 26. The motor is also geared to a disc shutter 53 and commutator 45, the commutator having brushes 49 connected to three stators 44 of a ganged condenser 39 under test. The condenser 39 forms a tuned circuit with inductances 15, 16 connected to a brush 48 on a commutator ring 47, the arrangement being such that each condenser unit is connected in turn to the indicator through the detector valve 17. The indicator includes a galvanometer 22 with reflecting mirror 23, the beam from the source of light 29 being cut off by the shutter 53 in synchronism with the commutator connections. The disc 53 may have coloured glass apertures corresponding to the different tuned circuits being tested. The resonant curves are thrown on the screen 28 and their distances apart indicate manufacturing differences in construction of the condenser units 44. In order to get the complete curves on the screen, the condenser 12 is adjusted to the peak resonant frequency of the circuit under test. The plates of individual condenser sets can then be bent or relatively adjusted with regard to their rotors until the curves coincide at the centre of the screen. Inductances or any other element of tuned circuits can be tested similarly. In a modification, the indicator comprises a lamp moving over a scale the lamp being energized by a polarized relay through rotating contact rings and segments driven by the motor 13.
Patent GB-1263937-A (GB)
Title: Process for the production of polyurethanes
IPC: D01F6/70
Filed: 1969-07-10
Abstract: 1,263,937. Coated products. GLANZSTOFF A.G. 10 July, 1969 [13 July, 1968], No. 34862/69. Heading B2E. Also in [Division C3] Substrates may be coated with polyurethanes prepared by (a) reaction of a polymeric diol of M.W. 700 to 5000 with a diisocyanate having at least one aromatic radical to form a preadduct having terminal isocyanate groups, (b) reaction of the pre-adduct with a mixture of chain extenders, comprising a total of 0.15 to 0.85 mols of one or more compounds selected from diamines, hydrazine and hydrazine derivatives per mol of the pre-adduct and an aliphatic ammo hydroxy compound, the total number of mols of the chain extenders being less than the number of mols of the pre-adduct, (c) addition to the products so obtained, of diphenylmethane -4,4'-diisocyanate and from 0.75 to 0.95 times the molar quantity of this diisocyanate of one or more aliphatic or araliphatic diols, having a M.W. of less than 700 and (d) stopping the reaction by the addition of a monohydric alcohol. The preadduct is usually prepared in the absence of a solvent but in the remaining stages of the process a solvent, e.g. dimethylformamide, dimethylsulphoxide and dimethylacetamide usually is employed. In a typical Example polyethylene adiphate is reacted with diphenylmethane-4,4'-diisocvanate to form a preadduct which is dissolved in dimethylformamide (DMF), reacted with a solution of diethanolamine and ethylene diamine in DMF to form a product to which is added a solution of diphenylmethane-4,4'-diisocyanate in DMF followed by a solution of 1,4-butane diol in DMF. The reaction is terminated with a solution of ethanol in DMF. This polyurethane may be applied to an impregnated web to form an artificial leather.'
Patent GB-605431-A (GB)
Title: Improvements in wiping down motions for the carriages of spinning mules
IPC: D01H3/26
Filed: 1945-12-22
Abstract: 605.431. Spinning mules. PEEL MILLS, Ltd., and MACRAE, J. H. Dec. 22, 1945, No. 34866. [Class 120(iii)] In a wiping down device of a spinning mule wherein a carrier E is intermittently traversed to and fro across the mule carriage C by two ropes A, D, Fig. 1, through a one-way clutch on the carriage transmitting movement during the outward carriage run only, the rope A, secured at each end to the mule framework, passes around one pulley C<SP>2</SP> of two side by side pulleys c<SP>1</SP> c<SP>2</SP>, connected together by the one-way clutch and rotated by movement of the carriage. The rope D passes up from the pulley c' and extends from end to end of the carriage C in two parallel portions to move the carrier E mounted on slideways F, Fig. 2. bv the pressure of a projection D<SP>1</SP> on the rope D against an end e<SP>2</SP> of a pivoted lever E<SP>1</SP>. When the carrier reaches the end of the carriage a rod G strikes a stop a. Fig. 1. to move the end e' of the lever. E<SP>1</SP> out of contact with the projection D' which is then free to pass round the pulley c<SP>4</SP> and make contact with the other end e<SP>2</SP> of the lever E<SP>1</SP> The carrier is intermittently traversed to the other end of the carriage where reversal is similarly effected. A plate H, Fig. 2, hinged to the carrier E carries on its underside a cloth or like cleaning device and has brushes K, K' at its sides. A brush K<SP>2</SP> cleans the spindle bolsters. The front of the roller beam is cleaned by an endless band or apron M supported by springs N attached to the plate H. An apron H', Fig. 1, suspended from the carrier E cleans the back of the carriage. Acording to the Provisional Specification, the carrier works in a sheet metal trough and carries a wheel having an odd number of projections on its periphery to contact with the projection D<SP>1</SP> on the rope D.
Patent GB-912179-A (GB)
Title: Improvements in automatic control systems
Inventor: FOODY JAMES JOSEPH
IPC: G05D1/02
Filed: 1959-10-15
Abstract: 912,179. Automatic steering control. SHORT BROS. & HARLAND Ltd. July 29, 1960 [Oct 15, 1959], No. 34980/59. Class 38 (4). An electric automatic control system includes a fault detector by means of which the differentiated output of a pulse generator is applied as a control signal. As shown, an aircraft is automatically maintained on course by applying electrical signals from the pick-off of a gyro 11 through an amplifier 12 to control a servomotor 13 operating a control element 14. Feed-back is applied to the input of amplifier 12 from a potentiometer 15 operated with the control element. To continuously check the servo - system, constant unidirectional square-wave pulses from an electrical generator 16 operate a relay 19 so that a voltage source 21 is periodically connected to a differentiating circuit 18 the alternating pulse output of which is applied to the input of amplifier 12. The operation of the servo-system is correct if corresponding signals are obtained from a monitoring potentiometer 22 operated with the control element. In the case of multiple channel servo operation the outputs of the monitoring potentiometers in different channels may be compared to detect faulty operation of a channel. Specification 886,228 is referred to.
Patent GB-1072657-A (GB)
Title: Improvements in and relating to spark erosion machining apparatus
IPC: B23H1/02
Filed: 1964-08-26
Abstract: 1,072,657. Spark erosion. W. M. P. STUART. Aug. 26, 1964, No. 35054/64. Heading B3V. A spark erosion apparatus has an R-C relaxation charging circuit 30 supplied with pulsating D.C. without time lag between the pulsations, the value of the charging capacitor being selected so as to produce discharges across the gap at a greater frequency than the pulsating frequency. The pulsating source may be rectified A.C. or an alternating current generator with a commutator coupled to produce the D.C. pulsations. The electrode 27 is controlled by a servo-motor 28 and the gap is immersed in a dielectric liquid or air is blown therethrough.
Patent GB-1139841-A (GB)
Title: Gripping device for ropes
Inventor: ALDRED PETER ARTHUR
IPC: F16G11/04
Filed: 1966-08-05
Abstract: 1,139,841. Rope grip. IMPERIAL CHEMICAL INDUSTRIES Ltd. 14 July, 1967 [5 Aug., 1966J, No. 35218/66. Heading D1T. A rope is passed through a housing 2, and if the rope has a sheath 9 a length thereof is removed. A double tapered member I is then pushed into the filamentary core and the parted filaments are passed through a collar 3. The collar 3 is pushed against the upper coned portion of the tapered member 1 and the protruding filaments folded over the collar 3 and downwardly around the member 1. The housing 2 and an anchor piece 5 are then joined together by an upper housing 4 to clamp -all the components tightly together.
Patent GB-970244-A (GB)
Title: Improvements relating to slide rails for furnaces
IPC: F27D3/02
Filed: 1963-09-06
Abstract: 970,244. Skid rails for furnaces. WISTRA OFENBAU G.m.b.H. Sept. 6, 1963 [Oct. 4, 1962], No. 35247/63. Heading F4B. A skid rail for a metal heating furnace comprises a water-cooled bearer tube 1, heatresistant saddles 9 supported from the tube 1 by refractory blocks 7, 8 and holders 3 isolated from the saddles 9 and supported directly on the beam 1 enclose the refractory blocks 7, 8. The sides of the holders 3 are joined by transverse webs 5 to form pockets in which the blocks 7, 8 rest, and are located by lugs 13 welded to the beam 1. The lower refractory blocks 7 resting directly on the beam 1 are made of low density heat-insulating brick, and support upper high density bricks 8. The saddles 9 are of T-shape so that they overlap the tops and ends of the holders 3.
Patent GB-305777-A (GB)
Title: Improvements in musical instruments
IPC: G10D7/00
Filed: 1927-12-29
Abstract: 305,777. Korving, E. M. N. Dec. 29, 1927. Musical toys.-Relates to a humming instrument of the kind in which the body A is provided with a mouth opening B, an outlet C, a vibrator D disposed over an orifice in the body, and a horn E fixed over the vibrator, and consists in that the outlet C is adjustable in area to vary the pitch and volume of the sound produced. The body A is formed in two parts, movement of one of which relatively to the other varies the area of the outlet C. One or more openings controlled by finger valves or other means may be provided in the wall of the body between the vibrator and the orifice.
Patent GB-815933-A (GB)
Title: Transducer assembly
IPC: G01G7/04
Filed: 1956-11-19
Abstract: 815,933. Light-utilizing apparatus. TEXAS INSTRUMENTS Inc. Nov. 19, 1956 [Dec. 16, 1955], No. 35315/56. Class 40 (3). [Also in Groups XXXVIII and XXXIX] In a gramophone pick-up, microphone, micrometer, surface roughness gauge, pressure gauge or weighing-machine, small mechanical movements are converted into electric currents by a transducer comprising a semi-conductor bar having one or two P-N junctions therein and a shutter which is controlled by the mechanical movements to vary the amount of light falling on the bar. As shown in Fig. 1, a transducer 15 comprises a movable shutter 24 carried by a rod 21 which is mounted in a flexible plate 18 in a casing 16 between a transparent window 17 and a transistor 22. A fixed shield 25 is also provided. The transducer 15 is mounted on a pick-up arm 12 and the rod 21 is extended at 23 to form the usual needle. A light source 13 is provided. In a microphone, Fig. 3 (not shown), and a pressure gauge, Fig. 6 (not .shown), the rod 21 is connected to a diaphragm to register its movements. In a surface roughness gauge, Fig. 4, a transducer 15 is mounted on a block 40 slidable over the surface to be gauged and irregularities of the surface are transmitted to the rod 21 by a feeler 42 against a spring 45. In a micrometer, Fig. 5, measurement of a part 53 is determined by the readings of the screw 51 and a gauge 54 operated by the transducer 15 under control of a probe 52. In a weighing machine, Fig. 8, movements of a scale pan 81 are transmitted to a transducer 15 through a pivoted beam 83 and the rod 21 and the current from the transducer is amplified and applied to a solenoid 85 to balance the beam, the current necessary to do this being a measure of the weight 80. In a modification, the beam 83 is replaced by a blade spring, the displacement of which is a measure of the weight applied.
Patent GB-407481-A (GB)
Title: Improvements in or relating to devices for use in grinding poppet valves
IPC: B24B15/08
Filed: 1932-12-14
Abstract: 407,481. Grinding valves. ALLEN, C., The Stores, Woodcote, Oxfordshire. Dec. 14, 1932, No. 35379. [Class 60.] Grinding interfitting parts together.-A portable device for grinding valves in their seats comprises a rotatable member 17 for engaging the valve, a crank 12 connected thereto and a reciprocating or rotary driving member 11 connected to the crank 12 by a casing 5 containing a compression spring 13, Fig. 2. The member 11 may be moved by hand or by a motor within the casing 1. Either or both of the members 11, 12 may comprise variable throw cranks. The member 17 has its blade 22 removable so that a valve having holes may be engaged by pins 25, and is connected to its shaft through a spring-opened clutch 18 or a magnetic clutch which may be used for lifting the valve and may be energized only when the electric motor is running.