baber/WOPTO huggingface dataset:
Patent GB-167913-A (GB)
Title: Improvements in money boxes
IPC: A45C1/12
Filed: 1920-06-10
Abstract: 167,913. Jensen, S. C. June 10, 1920. Money-boxes; letter-boxes and like receiving devices.-A money-box comprises a body 5 and a chamber 1 into which a coin may be inserted through a slot 3 and from which it falls into the body 5 through a slot 4 which is out of alignment with the slot 3. The coin is conveyed from the slot 3 to the slot 4 by a sliding member 12 controlled by a spring 9. A weighted plate 6 is pivoted beneath the chamber 1, so that if the box is inverted the plate automatically closes the outlet. In the form shown in Fig. 2, the movable member is rotated in order to bring its slot into register with the slots 3, 4 respectively, and the safety plate is pivoted above the axis 15 of the movable part. In the form shown in Fig. 3, the motion of the moving part is spiral and. the security lock is arranged as in the modification described with respect to Fig. 2.
Patent GB-893908-A (GB)
Title: Improvements in and relating to magnetic testing systems
IPC: G01N27/84
Filed: 1960-05-04
Abstract: 893,908. Magnetic testing apparatus. HOWE SOUND CO. May 4, 1960 [May 9, 1959], No. 15814/60. Class 37. In a magnetizing circuit for magnetic particle inspection equipment the magnetizing current is applied gradually by means of an adjustable control device exhibiting an inherently slow build-up of current in the primary circuit of a step-down transformer. In the circuit shown, the test object may be magnetized longitudinally by placing it in a coil 2. Peripheral magnetization may alternatively be obtained by passing a longitudinal current through the test object by means of electrodes 4, 6. The magnetizing current is obtained from a bank of rectifiers 12 supplied by three-phase transformers 32, 34, 36, the input voltage of which is controlled by saturable reactors 46. Each reactor 46 operates on half-cycles of one polarity only, under control of rectifiers 54. The saturable reactors 46 provide a slow buildup of magnetizing current, the maximum value of which is controlled by variation of the direct current in windings 52 by means of variable resistors 70, 72, 76 supplied by rectifiers 68. When the push-button 84 is closed, a time delay relay CR4 is started and contactor CR2 is energized via the normally closed contacts 88. CR2 closes contacts 16 in the magnetizing circuit and energizes contactor CR1 to close contacts 44 in the primary circuit. After the magnetizing current has built up to the required value, contacts 88 controlled by the time delay relay CR4 open, releasing contactor CR2 so that contacts 16 provide a rapid decay of magnetizing current. Switch 92 may be thrown to the lower position to energize coil 2. The apparatus is stated to minimize heating of the test object and to prevent overshoot of the shunted voltmeter 22 used as a current meter.
Patent GB-612472-A (GB)
Title: Improvements in interstage coupling circuit for thermionic valve amplifiers
IPC: H03F1/50
Filed: 1946-05-24
Abstract: 612,472. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. May 24, 1946, No. 15831. Convention date, May 26, 1945. [Classes 40 (v) and 40 (vi)] An interstage coupling for a thermionic valve amplifier comprises an inductor connected between the anode and cathode of the first stage with a portion of the inductor connected between the grid and cathode of the second stage, the ratio of the impedance of the whole inductor to that of the portion being equal to the ratio of the capacity between grid and cathode of the second stage to that between anode and cathode of the first stage. The Figure shows the inductor 7 tapped so that it resonates with the total interstage capacity 9 which has a value approximately equal to twice the output capacity of valve 1, the damping resistor 3 being proportioned to give the required band width. The inductor 7 acting as an auto-transformer enables the stage gain to be increased for a given bandwidth or alternately the band-width to be increased for a given gain per stage. In a modification, Fig. 2 (not shown), an A.V.C. voltage is applied to the lower end of the inductor, which point is capacitively decoupled to earth.
Patent GB-153042-A (GB)
Title: Improvements in or relating to furnaces
IPC: F23D99/00
Filed: 1919-06-24
Abstract: 153,042. Smallwood, A. June 24, 1919. Addition to 125,744. Metal-heating furnaces.-As in the furnace described in the parent Specification, hot gas from a producer or a fire-grate &c. is burnt in a combustion chamber b, whence the combustion products pass by way of heat chambers c and thence by a number of ports e into the working clamber d. According to the present invention hot air is supplied to the heat chambers c by ports r distributed along their length and preferably immediately below the ports e, so that it meets the gases approximately as they issue from the heat chambers. Waste gases leaving the working chamber at the charging end descend to a transverse flue, whence they pass by flues j to the chimney. Air flows in the opposite direction through flues p to a shallow flue f and thence to the ports r. Some air may be admitted to the combustion chamber midway of its length, and some of the waste gases may pass direct to the chimney from the inner end of the working chamber.
Patent GB-317920-A (GB)
Title: Improvements in effecting chemical reactions in gases by means of electrical discharges
IPC: C07C2/80
Filed: 1928-05-31
Abstract: 317,920. Hull, P. H., and Imperial Chemical Industries, Ltd. May 31, 1928. Gases, treating with electric discharge.-In the production of acetylene by the treatment of hydrocarbon gases with high tension electric arcs, the gases are caused to pass rapidly through a hollow tubular electrode. The arc is maintained between a hollow water - cooled electrode 2 and a rod electrode 1 arranged in an aluminium chamber 6 having sighting windows 9 and gas inlet connections 5. The electrodes are of carbon and the gases after passing through the arc enter the converging hole in the electrode 2 and pass to the outlet through the tube 4. In a modification, both electrodes are tubular and the gases are passed in through one tube and out through another. The tubes may have different diameters. Spiral baffles may be inserted in the tubes. In a further modification, the electrodes are solid cylinders having a plurality of longitudinal holes. The gas used may be coke oven gas freed from sulphur compounds and containing 25-35 per cent of methane. The arc is operated at 4000 volts and 40 cycles. The gas velocity in the hollow electrode is 250-300 feet per second and the treated gas containing 3-5 per cent of acetylene is passed to an absorption tower as described in Specification 302,515. [Class 2 (iii), Dyes &c.]. Specifications 263,859 and 294,491 also are referred to.
Patent GB-881546-A (GB)
Title: Improvements in or relating to fuel injection pumps
IPC: F01M1/12
Filed: 1959-05-08
Abstract: 881,546. Fuel injection pumps. SIMMS MOTOR UNITS Ltd., PATERSON, T., and UTTIN, A. C. April 27, 1960 [May 8, 1959], No. 15936/59. Class 102(1). A fuel injection pump comprises one or more plungers 11 reciprocated in a cylinder or cylinders 12 by a camshaft 14 housed within an enclosure 16 and lubricated by fuel oil leakage from the cylinder, and an outlet passage 21 from the enclosure, for fuel oil leakage in excess of that required for camshaft lubrication, which leaves the enclosure at a level above that of the fuel oil in the enclosure when the pump has stopped, the excess fuel oil being removed from the enclosure by the action of the rotated camshaft.
Patent GB-379729-A (GB)
Title: Improvements in tuning coil units
IPC: H01F21/12
Filed: 1931-06-01
Abstract: 379,729. Wireless receiving apparatus. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London, and PAYMAN, H. S., 2, Edilom Road, Crumpsall, Manchester. June 1, 1931, No. 15952. [Class 40 (v).] A tuning coil unit for a superheterodyne receiver adapted for use on several wavebands comprises a number of switched oscillator coils in conjunction with a common unswitched coupling coil. The oscillator coils S, M, L, Fig. 2, reaction coils R1, R2 for the oscillator, and the coupling coil C are wave-wound and mounted on a former 6 secured to a metal bracket 7 to which is also fixed an insulating disc 9 carrying rivets a .. h as shown in Fig. 4, the connections from the coils being made to the rivets. The bracket 7 is fixed to an insulating base or disc 11, which, together with the screening box 17 for the unit, is mounted on a screwed metallic bush 12 also serving for fixing to the. panel. The base 11 carries three contacts A, B, C, Fig. 3, which may be selectively connected to a metal plate 31 by a spring strip 19 actuated by a spindle 18 on which it is rigidly secured by an insulating mounting. External connections to the unit are made by leads F1 .. F5 led through holes in the screening box. The connections are shown in Fig. 1, the position of the switch 19 determining the oscillator coils in circuit and thereby the frequency band desired. The coupling coil may be separate, as shown, or actually connected to the oscillator coil.
Patent GB-815532-A (GB)
Title: Improvements in or relating to explosive connecting cords
IPC: C06C5/04
Filed: 1957-05-20
Abstract: 815,532. Detonating fuze cord. ANDREW, D. J., FELCH, R. W., and NODDIN, G. A. May 20, 1957 [July 11, 1956], No. 15952/57. Class 9(1) A detonating fuze cord for connection to blasting charges comprises an explosive core 1 surrounded by a metal sheath 2 which may be covered by a non-metallic countering 3, the core having 0.1 to 10 grains of explosive per ft. length. The sheath 2 may be of lead or aluminium or other ductile metals such as tin, silver, copper, magnesium or alloys thereof. The countering 3 may be a woven fabric or a coating of flexible plastic material such as polyethylene, polyvinyl chloride or rubber. Wire or other metal reinforcement may be incorporated. The explosive may be PETN, RDX, lead azide or nitromannite. In an example 30 ft. of lead tubing with inner and outer diameters 0.095 inches and 0.406 inches respectively was filled with 1200 grains of PETN and drawn to an outer diameter of 0.092 inches to produce a core of 0.020 inches diameter and 1.9 grains of PETN per ft. A bituminous coating, helically wound yarns and a wax finish was applied to the drawn tube. In a second example, a 1/32 inches squaresectioned groove was lined with aluminium foil, the groove then being filled with nitro-mannite, which was then covered by the foil. Lead azide granules cemented with nitrocellulose may form the core, the sheath being aluminium.
Patent GB-931142-A (GB)
Title: Improvements in or relating to vehicle detection apparatus
IPC: G08G1/04
Filed: 1961-05-03
Abstract: 931,142. Vehicle detectors. GENERAL RAILWAY SIGNAL CO. May 3, 1961 [May 9, 1960], No. 16007/61. Class 1<.>18. [Also in Groups XIX and XL (c)] In a vehicle-passage detection system which incorporates receiving means controlled by the reflection of beam-energy pulses as each vehicle passes over a fixed reflecting surface and first means operated to a first condition on reception of reflection pulses from the surface and to a second condition when such pulses are not received, checking means is operated to a distinctive indication to thereby indicate the presence of a defective condition when the first means is in its second condition for a time substantially in excess of the time that a vehicle ordinarily remains in the energy beam. The counting of vehicles entering (or leaving) a parking space using a pulse sonic or ultrasonic echo-sounder with gates corresponding to the ground and to the range of heights of vehicles to be detected is carried out by apparatus generally of the kind described in Specification 931,125, Figs. 1 and 2 (not shown), and the arrangement is such that, for a single passageway, relay RV is energized when there are no received reflections from a vehicle and relay RG is not energized; when a vehicle is present, the relay conditions are reversed. Relay RT is of the slow-make kind, requiring e.g. two minutes of steady energization before it makes, to eliminate fault indication on brief closures of its energizing circuit for example when the front and rear ends of a vehicle pass through the detecting beam; when relays RG and RV are in the same condition for a protracted period relay RT makes and neon 153 is energized to indicate a fault. The power supply for the neon is preferably independent of that supplying the rest of the equipment or uses a separate transformer. A single relay RT may be con trolled by a plurality of detection units, Fig. 9 (not shown); additionally each detection unit may have its own neon fault indicator e.g. 155. To indicate past defects a push-button PB and associated circuit, including neon 163, is provided.
Patent GB-919414-A (GB)
Title: Improvements in thickness-measuring apparatus
Inventor: DONALDSON KENNETH JAMES STUART
IPC: B07C5/08
Filed: 1959-05-11
Abstract: 919,414. Measuring thickness electrically. MULLARD Ltd. May 11, 1959, No. 16067/59. Class 40 (1). Semi-conductor wafers are successively fed to an electrical thickness gauge and directed to separate parts of a receptacle in accordance with the measured thickness. As shown (Figs. 1, 2) the wafers are fed into a tray 1 having a curved track 4, and the tray is vibrated so that the wafers are fed round the track against a wall 4a to be located over an aperture 7 in which is a hollow shaft 5 connected to a vacuum line, whereby the wafer is held in position. By pneumatic pressure the shaft 5 is made to rise, whilst pressure air from a jet 12 removes excess wafers, until the remaining wafer on shaft 5 reaches an anvil 8. Associated with shaft 5 is a thickness gauge 6 comprising two fixed coils 23, 24 (Fig. 7) and a movable armature, the coils being connected in a bridge circuit whose unbalance voltage, indicated at 32, is a measure of the wafer thickness. This voltage is automatically balanced against a voltage tapped from a potentiometer 17 located on the same shaft 16 as a sectionalized receptacle 15 which is therefore rotated by an amount dependent on the wafer thickness, and the wafer is then blown by jet 11 into the appropriate section of receptacle 15. The sequence is controlled by a motor-driven cam arrangement. Specification 919,413 is referred to.
Patent GB-677076-A (GB)
Title: Improvements in or relating to pumps
IPC: F04B43/08
Filed: 1949-06-16
Abstract: 677,076. Valves. SHRUBSALL, G. W. G. June 14, 1950 [June 16, 1949], No. 16114/49. Class 135 [Also in Group XXVIII] In a hand-operated pump in which a resilient bulb 15 is secured around a tube 1 the inlet tube 3 projects within the tube 1 and the end forms a seat for the ball valve 4 and a cross pin 5 is provided to limit the lift of the valve. The outlet tube 10 is inserted in an enlarged bore of the tube 1 and the end is shaped to provide a stop to limit the lift of the ball valve 9 which seats on a shoulder in the tube 1.
Patent GB-1452594-A (GB)
Title: Adjustable mirrors for vehicles
IPC: B60R1/072
Filed: 1975-04-18
Abstract: 1452594 Toothed gearing; screw-and-nut gearing TENNA CORP 18 April 1975 [16 May 1974] 16132/75 Heading F2Q [Also in Division B7]  An adjustable rearview mirror for a vehicle (see Division B7) includes a rigidly mounted motor 30 driving a flexibly mounted worm gear 44 movable by a solenoid 31 to engage a gear 46 or 47. The gears drive screws 35, 36 attached to the mirror backing plate 25. The worm gear arrangement consists of a tubular member 127, which is a push fit on the motor output shaft, a ring 124 mounted on the member 127 by a pair of diametrically opposed flexible lugs 140, and a worm gear 134 carried by a hollow tube 132 secured to the ring 124 by a pair of diametrically opposed flexible lugs 142. The open end 135 of tube 132 engages a projection on a frame 49 pivotally mounted in the motor casing whereby actuation of the solenoid 31 flexes the tube 132 to bring the worm gear into driving engagement with gear 46 or 47. Each gear is rotatably mounted between the walls 28a, 28b of the motor housing, Figure 11, and has a central aperture receiving a screw 35 or 36. The gear has three grooves 179 spaced around the screw, each groove receiving a captive spring-loaded toothed member 186 rotatable with the gear to move the screw in a longitudinal direction and adjust the position of the mirror. Only one member 186 is in full engagement with the screw, the other two members being offset in opposite directions to apply opposing forces on the screw and prevent vibration thereof, Figures 12-14 (not shown). In the event of the screw reaching an end position, or of the mirror being prevented from moving by snow or ice, the members 186 slip relative to the screw to prevent damage to the motor. In a modification, the members 186 carry nylon bristles or fur in place of the teeth.
Patent GB-945979-A (GB)
Title: Improvements in or relating to high-voltage gas-blast electric circuit-breakers
Inventor: ROBERTS FREDERICK ARTHUR
IPC: H01H33/72
Filed: 1960-05-06
Abstract: 945,979. Gas-blast switches. A. REYROLLE & CO. Ltd. May 6, 1960, No. 16135/60. Drawings to Specification. Heading H2B. A high-voltage gas-blast switch has an arcing 'chamber of generally cylindrical shape having integral end flanges, the chamber being made of wound insulating fibre. Except for the shape of the chamber the constructions described are the same as those of Specification 946,236.
Patent GB-223281-A (GB)
Title: Improvements in automatic electric regulators
IPC: H02P9/24
Filed: 1923-06-21
Abstract: 223,281. British Thomson-Houston Co., Ltd., Trencham, H., and Parry, R. D. June 21, 1923. Regulation, automatic. - A vibrating electric regulator 4 comprising a continuous current control coil 5 connected across an exciter 3, a differentially wound reday 6 operated by the regulator 4, and a control coil 8 responsive to the condition to be regulated, is provided with a resistance 10 which is automatically introduced into the circuit of the relay 6 when the upper portion of the normal range of regulation is reached, thereby increasing this range. The invention is shown as applied to the maintenance of constant voltage of a generator 2, but may be applied to speed &c. regulation. A contact making voltmeter 11, 12a connected across the exciter 3 controls a reversible motor 13 for varying the resistance 10, and simultaneously varying resistance 10<a>, 10<b>, 10<c> in circuit respectively with the coil 5, itself, and the voltmeter 11. The brush gear of the resistance 10 - - 10<c> may be provided with limit switches, or may be adapted to run off, against the action of a spring, the threaded part of shaft of the motor 13, thereby preventing the gear jamming at the limits of its movements. In a modification, the voltmeter 11, upon rise of voltage, breaks a short circuit across the resistance 10 which is of fixed value, the resistance 10<a>, 10<c> and the motor 13 and its associated parts being omitted. Specification 26597/12 is referred to.
Patent GB-456414-A (GB)
Title: Acoustical apparatus
IPC: H04R1/28
Filed: 1936-06-10
Abstract: 456,414. Acoustical apparatus. JARNAK, N. P. R., 19, Jernbanevej, Hillerd, Denmark. June 10, 1936, No. 16182. Convention date, June 12, 1935. [Class 13] Acoustical apparatus comprises a vibrating diaphragm associated with resonators formed as straight, curved, or discontinuous tubes, each of constant or variable cross-section, and constructed so that interference can be generated from standing waves therein, the resonators being built so that at least two of them have their resonance frequencies in the proportion 2 : 3. In one form, two open-ended tubes 2, 3 are mounted on a plate 8 to which is secured a ring 7 between which and a ring 6 a diaphragm 1 is clamped. The lengths of the tubes 3, 2 are in the proportion 2:3. In a modification. tubes 2, 3, 4, 5 are mounted on the plate 8. The length of the tube 4 is 2/3 the length of the tube 3 and the length of the tube 5 is 2/3 of the length of the tube 4.
Patent GB-684305-A (GB)
Title: Improvements in or relating to letter openers
IPC: B43M7/00
Filed: 1951-07-09
Abstract: 684,305. Cutting envelopes. STOLL, A. July 9, 1951. [Sept. 22, 1950] No. 16213/51. Class 31 (i). A device for opening letters comprises a letter support 3 pivoted at 2 to a frame 1, the support having a blade 5 secured thereto and having rotatably mounted thereon at 8 a drum 6 provided with a helically arranged blade 7 and with a projection 9 disposed in a slot 10 of the frame. In operation, after the letter is placed on the support with its edge beneath the blade 7, the support is depressed against the action of a spring 4 cause the blades 5, 7 to move relatively to each other to cut open the letter.
Patent GB-1190621-A (GB)
Title: Improvements in or relating to Ships and Boats.
Inventor: GRUNDY JOHN WAKELAM
IPC: B63B1/38
Filed: 1967-04-10
Abstract: 1,190,621. Hull lubricating; stabilizing; refloating. J. W. GRUNDY. 9 April, 1968 [10 April, 1967], No. 16219/67. Headings B7M and B7S. A ship comprises a recess in its bottom divided into pockets 19 by longitudinal and transverse partitions which have their lower edges immersed in the water, means charging the pockets with air, and a duct 38 connecting a front and a rear pocket. The recess is formed by a rigid hollow skirt. Transverse partitions 27 are straight and have inclined front faces 28 but may be arcuate or have bulbous projections (28a, Fig. 7, not shown). In Fig. 5 (not shown), ducts (38) connecting front and rear pockets contain a blower or valve 41, and ducts (36) connect the front and rear of each respective pocket. The transverse partitions (35) are hinged to the hull with their free edges floating. A water level detector in each pocket controls the air supply to the pockets. An air collection chamber may be provided in front of propeller 30. The pressure difference between pockets on opposite sides of the ship may control stabilizing tanks or vanes. On running aground the ship may be raised by air pumped into the pockets. The ship may be braked by release of air from the pockets.