baber/WOPTO huggingface dataset:
Patent GB-1199016-A (GB)
Title: Voltage Testing Arrangement
IPC: G01R19/155
Filed: 1967-06-19
Abstract: 1,199,016. Voltage testing. IPA INTERNATIONALE PATENT-UND LIZENZANSTALT. June 19, 1967 [June 17, 1966; Jan. 13, 1967], No.28203/67. Heading G1U. The presence of high voltage on a line 1 is detected using an arrangement including a contact 2 to be brought into contact with the line, a conducting body 4 having a capacity C to earth and an indicating circuit incorporating a current source 11 and indicator 9 in a series path controlled by a trigger relay 10 of thyristor type having two control terminals connected respectively to the contact 2 and the body 4. The impedance between the control terminals (the barrier layer impedance of the thyristor) and the capacity are such that at the instant of contact between the contact 2 and conductor 1 a transitory current oscillation is set up which is so large as to cause the triggering of the relay to cause the indicator to operate, the relay being responsive solely to this oscillation. In a particular embodiment Fig. 4 the control electrode of a thyristor 10 is connected to the conducting body 4, while the cathode is connected via the housing of a buzzer 13 to the probe 2. When the thyristor triggers, current flows from the battery 11 and the buzzer coil 14 opens the contacts 15. A capacitor 16 and resistor 17 take a charging current which prevents the thyristor being extinguished for a short time, so that the opening contacts do not immediately extinguish the thyristor. The standby condition of the circuit is tested by closing the switch 18. This causes the capacitor 19 to charge, and the apparatus operates if in working condition. Furthermore, if the battery is properly charged, steady current will flow through the lamp 20 and Zener diode 21 to light the lamp. The whole arrangement is built into a portable unit Figs. 6 and 7 (not shown). A circuit for use in lower voltage tests incorporates a transistor amplifier stage before the thyristor Fig. 5 (not shown). Other devices are explained suitable for insertion into hollow containers, etc. for detecting voltages therein, and assembly details of apparatus in accordance with the invention and test arrangements therefor are given Figs. 6, 7, 9-12 (not shown). In an alternative form of the invention Fig. 8, the capacitive body 4 is a Faraday cage containing the circuitry of the test arrangement, except the indicator, and the cage is connected directly to one control electrode of the thyristor and to a contact 33 for making contact with the wire 1. The other control electrode is coupled to a plate 2 capacitively coupled to the cage 4, and it is this capacity, together with the barrier layer impedance of the thyristor, which are such that at the instant of contact between the contact 33 and the high voltage conductor a transistory oscillation is set up which triggers the thyristor, the thyristor being responsive solely to this oscillation.
Patent GB-780372-A (GB)
Title: Improvements in or relating to coupling devices
IPC: B60G13/00
Filed: 1955-10-04
Abstract: 780,372. Springs. ALLINQUANT, F. S. Oct. 4, 1955 [Oct. 8, 1954], No. 28279/55. Class 108(3) [Also in Group XXXIV] In an axially resilient vehicle suspension comprising a cylinder 2 in which slides a piston 3, a piston rod 5 is pivotally mounted with respect to a member 1 by two knife bearings disposed at right angles to each other. A plate 7 attached to the member 1 carries a knife-edge 8 which engages a V-shaped notch 12 in the underside of a plate 10. The top-side of the plate 10 has a V notch 13, disposed at right angles to the notch 12, the notch 13 being engaged by a knife-edge 14 formed on the underside of a plate 15. The knife-edges are maintained in engagement by a frustoconical member 19, secured to the member 1, a flanged sleeve 24 mounted on the piston 5, and an interposed rubber washer 22. The bearings are enclosed by a flexible casing 17 which is filled with grease. In a modification, the knife-edge bearing 8, 12 is replaced by a thick annular rubber pad 29. Relative rotation, of the arm 1 and plate 10 is prevented by ribs 35, 36 engaging grooves in the respective members. Specification 765,604 is referred to.
Patent GB-980999-A (GB)
Title: Valved sack
IPC: B65D30/24
Filed: 1963-07-17
Abstract: 980,999. Valved bags. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd. July 17, 1963 [July 17, 1962], No. 28329/63. Heading B8K. A tubular valve sleeve 14 extending inwardly of a valved sack 10 is formed with a collar 15 which covers perforations 16 in the valve. The collar may be spot-welded to the valve, and the sack may be heat-sealed at 11, 12 or may be sealed by adhesives. The collar 15 may have a perforation out of register with the perforations of the valve.
Patent GB-408611-A (GB)
Title: Improvements in or relating to vacuum-sealed canisters
IPC: B65D43/02
Filed: 1932-10-11
Abstract: 408,611. Vacuum - - sealed canisters. LLOYD, E. GORE-, Langston, Walton Lane, Shepperton-on-Thames. Oct. 11, 1932, No. 28331. [Class 125 (iii).] A canister 1 of the general type described in Specification 393,268 is of rectangular form, i.e. having long flat sides, and is characterized in that the inner wall 4 of the recess 3, around the edge of the lid 2, is, in the closed position, substantially parallel to the general direction of the upstanding walls of the canister, and in that these walls have raw edges inturned to such an extent, say 30‹, and fitting so far into the rubber jointing member 5, which may be of channelled form, that on evacuation of the canister the inner wall 4 of the recess effectively supports the inturned edges 6 through the interposed member 5 to prevent distortion of the edges 6 by the action of the external atmospheric pressure. The wall 4 may be curved slightly outwards towards the middle of its length to counteract the tendency for greater yielding of the member 5 at this point. Specifications 356,525 and 365,757 also are referred to.
Patent GB-464290-A (GB)
Title: Improvements in or relating to valve stem assemblies for inflatable articles
IPC: B60C29/00
Filed: 1935-10-14
Abstract: 464,290. Inflating-valves. FIRESTONE TYRE & RUBBER CO., Ltd. Oct. 14, 1935, No. 28346. Convention date, Dec. 15, 1934. [Class 135] [Also in Group V] In an inflating-valve for pneumatic tyres and like inflatable articles comprising a rubber valve stem 10 moulded and vulcanized about an axially arranged tubular metallic insert 12, a flange 16 intermediate the ends of the insert has its exposed lateral face flush with the end of the rubber stem. During the moulding process, the flange 16 which is bevelled at 17 is supported in sealed engagement with a countersink 27 in a socket member 24 having a recess for the threaded end 15 of the insert which receives the usual valve cap. The socket member 24 is received in a base 20 supporting a plate 21 having a recess 25 in the shape of the body 10 and the base 11 of the rubber stem. The recess 25 merges into a recess 28 in the socket member. A plate 22 carrying a centring pin 23 surmounts the plate 21. The pin 23 and the countersink 27 prevent rubber flowing into the bore of the insert and on to the threaded part 15 respectively. Grooves 14 provide a mechanical interlock with the stem 10.
Patent GB-1142772-A (GB)
Title: Ceramified articles
IPC: C08K3/00
Filed: 1967-06-20
Abstract: 1,142,772. Ceramic articles. DOW CORNING CORP. 20 June, 1967 [18 July, 1966], No. 28391/67. Heading C1J. Articles are formed from a mixture of (1) a resinous organopolysiloxane block copolymer consisting essentially of (a) polymer blocks of average general formula in which the sum of x+y+z has an average value of 6 to 100, and y and z each have a value up to 10% of the sum of x, y and z; (b) polymer blocks of average general formula in which R, if present, is an alkyl or alkenyl radical containing less than 6 carbon atoms, q has an average value of 1À0-1À3 and w has an average value of up to 0À3, the siloxane units in (a) being from 10-75 mol. per cent and the siloxane units in (b) being from 25-90 mol. per cent of the total siloxane units in the block copolymer, the minimum amount of (b) when the sum x+y+z is from 50 to 100 being determined by the equation where M is the minimum amount of (b) in mol. per cent and S is x+y+z, with (2) from 10- 60% by volume of a ceramic material based on the total volume of (1) and (2) having a softening point above 800 C. and free from materials which volatilize below 800 C.; the formed article is heated to 50-300 C. whereby it is altered in dimension and ceramified by further heating to 500-1550 C. The ceramic material (2) may be aluminium silicate, magnesium silicate, ZnO, MgO, Fe 2 O 3 , Al 2 O 3 , ZrO 2 , tungsten carbide, titanium carbide, molybdenum carbide, lithium aluminate, silicon nitride, boron nitride, zinc silicate, calcium aluminium silicate, magnesium aluminium silicate or lithium aluminium silicate.
Patent GB-192153-A (GB)
Title: Improvements in or relating to vapour burners, suitable for domestic and like purposes
IPC: F23D11/44
Filed: 1921-10-26
Abstract: 192,153. Lee, C. B. B., and Hill, L. Oct. 26, 1921. Portable oil stoves; supports for articles to be heated.-In a vapour burning stove the support for the articles to be heated consists of a frame 14 cast integrally with the burner mixing chamber 11 and having legs 15. A rest or casting 17 secured to the upper part of the frame is formed with depending projections 18 which bear on the upper part of a frame 16 carrying a perforated metal plate or gauze 12 forming the top of the mixing chamber. The casting may consist of a cross, one or both transverse elements of which form a flue or flues 20.
Patent GB-1542724-A (GB)
Title: Line circuits for telecommunication exchanges
IPC: H04Q3/00
Filed: 1976-07-08
Abstract: Equipment of this type contains a Hall effect device (HED) to identify the closure of the loop, the dialling procedure and ring tripping and is used in all-electronic exchanges. The magnetic circuit of the Hall effect device (HED) is identical to that of the transformer (T1). The direct current is supplied from the exchange via a transformer (T1) whose respective one winding is in each case connected between one terminal ( <IMAGE> , - ) of the DC source and one of the line wires. A pair of additional transformer windings enables the application of the AC ringing current on the one hand and, on the other hand, the connection of a test device to the line wires to test the line condition, e.g. the line impedance. <IMAGE>
Patent GB-978475-A (GB)
Title: Rotary vacuum pumps
IPC: F04C25/00
Filed: 1962-07-24
Abstract: 978,475. Rotary vacuum pumps. SOC. ALSACIENNE D'ELECTRONIQUE ED DE MECANIQUE APPLIQUEES (S.A.E.M.A.). July 24, 1962 [Aug. 1, 1961], No. 28480/62. Heading F1F. In a two-stage rotary vacuum pump of the oil sealed, outwardly sliding vane type, the two rotors 2, 7 are mounted on parallel shafts and the rotor 7 of the high pressure stage is driven at a slower speed than the rotor 2 of the low pressure stage. The rotor 2 is driven directly by a motor 14, and the rotor 7 is either driven through a belt drive 17, as shown, with the two stages of the pump side by side, or the stages are arranged with the axes of the pump chambers 1, 6 in line (Fig. 4, not shown) and with reduction gearing between the two stages. The exhaust ducts 9 discharge through valves into an oil bath (Fig. 1, not shown), and oil is allowed into the first stage sufficient for lubrication and into the second stage sufficient for sealing. The pump may have more than two stages and may be other than the sliding vane type.
Patent GB-659722-A (GB)
Title: A process for coagulating dispersions of polymers
IPC: C08F6/22
Filed: 1949-11-07
Abstract: The process of the parent Specification is modified by using methyl isobutyl carbinol as the organic hydroxy compound.
Patent GB-364095-A (GB)
Title: Improvements in or relating to controlling means for power operated mechanism equipped with a clutch
IPC: G05G5/08
Filed: 1930-09-24
Abstract: 364,095. Controllers. BRITISH JEFFREY-DIAMOND, Ltd., Stennard Works, Wakefield, Yorkshire.-(Assignees of Jordon, B. M. ; 153, West 2nd South, Salt Lake City, Utah, U.S.A.) Sept. 24, 1930, No. 28616. Convention date, Sept. 24, 1929. [Class 3b (iii).] Associated with clutch.-In mechanism driven by a motor through a clutch, a rotatable member on the motor controller is locked from movement in an "on" direction when the clutch is engaged, but is free to be moved in the " off " direction. A motor 6 drives a mining machine 5 through a normally engaged friction clutch, and is controlled by a controller 42 which is locked from movement in the " on " direction when the clutch is engaged, by a spring-biased member 48 engaging with a gear wheel 44 on the controller spindle 43. A lever 41 must be moved to the position shown dotted in Fig. 1 to disengage the clutch and release the member 48 before the controller is free to move in both directions. The lever 41 is held in its disengaged position shown in Fig. 4, by one end of the locking member 48, and a lip 54 on the latching member 50.
Patent GB-755187-A (GB)
Title: Improvements in and relating to extrusion presses
IPC: B30B11/26
Filed: 1954-10-06
Abstract: 755,187. Extrusion presses. SCHLOEMANN AKT.-GES. Oct. 6, 1954 [Nov. 17. 1953], No. 28766/54. Class 87(2) A closure member 7, which is applied to the nozzle 2 of an extrusion cylinder 1 whilst material (e.g. carbon electrode material) is being compressed in the cylinder by a reciprocating plunger 3, is held against the nozzle, as shown, by hydraulic action. Thus, hydraulic pressure passes from pressure accumulator 12 through pipe 11 and non-return valve 10 to a space 9 in a cylinder 4 where it acts on a piston 8 secured to the closure member 7. When the nozzle is to be opened (after the material has been compressed by the plunger) the valve 10 is withdrawn by turning a spindle 15, whereupon the high pressure that has been developed in space 9 by the compression of the material escapes into the accumulator 12. and simultaneously the member 7 detaches itself from the nozzle. Then the cylinder 4, with the whole of the closure mechanism, may be detached from the nozzle by releasing bayonet joints 5, 6. The closure member 7 is applied to the nozzle by means of screwed spindle 19 and handle 20. The upper part 12a of the accumulator is filled with air which may be replenished through a valve 13.
Patent GB-597923-A (GB)
Title: Wave-signal transmission line having an adjustable terminal impedance
IPC: H01P1/24
Filed: 1945-10-30
Abstract: 597,923. Electric resonators. HAZEL. TINE CORPORATION. Oct. 30, 1945, No. 28813. Convention date, Nov, 16, 1944. [Class 40 (iii)] The impedance at the terminals of a transmission line is varied by means of magnetic material surrounding one or both conductors and so shaped as to have a substantial coefficient of reflection. In the coaxial line 40, 41, Fig. 2, a cylinder 42 of magnetic material slides along the inner conductor 41. When it is at a current antinode it increases the distributed inductance and so lengthens the line electrically and affects the terminal impedance. The slider 42 is long rather than broad, in order to leave a clearance and so prevent arc-over and to prevent the impedance from being affected by tolerance variations ; it terminates sharply so that the resulting discontinuity of impedance may give rise to reflection. It is about oneeighth wavelength long in a quarter-wave line or about quarter wavelength long when the line is longer than half a wavelength, in order to secure a maximum range of variation. The cylinder 42 may have thin walls, Fig. 1 (not shown), in order that it may not affect the distributed capacity of the line, or it may be in contact with either the inner or the outer conductor, Figs. 3, 4 (not shown). The slider may comprise a mass of dielectric having magnetic particles embedded in it. When the slider is at a voltage node, the dielectric increases the electrical length of the line while the magnetic material has little effect. The Specification gives formulµ for determining the effective permeability and dielectric constant which will yield a required impedance characteristic, the magnetic effect predominating. The slider constructed of such material may fill the space between the conductors as at 45, Fig. 5 ; or if it has a permeability greater than 2 it may be enclosed in a conductive shell 52, Fig. 7, having a web 54 which may be central as shown or located at one end, Fig. 6 (not shown). A pair of Lecher wires 80, 81, Fig. 8, may be embraced by sliding magnetic cylinders 85, 86, joined by a web 87 of dielectric. The corners of the sliders 42 or 85, 86 may be rounded to prevent corona discharge. The device may be arranged as a resonator for tuning in oscillator, Fig. 1 (not shown). Specification 597,922 is referred to.
Patent GB-1044249-A (GB)
Title: Drier for web- or sheet-like materials
IPC: F26B13/00
Filed: 1965-07-07
Abstract: 1,044,249. Drying webs. SVENSKA FLAKTFABRIKEN A.B. July 7, 1965 [July 13, 1964], No. 28836/65. Heading F4G. Apparatus for drying web- or sheet-like material 1 comprises perforated distribution boxes 2, 3 for the drying medium disposed successively in the conveying direction and perpendicular thereto, in which apertures in the boxes 2 are non-closable and the boxes 3 each have one or more spaced series of permanently open holes 4 and one or more series of holes 5 having individually adjustable members 6 formed of flap valves adapted to close the holes. The holes 4 and 5 in the boxes 3 may be in the same or opposite wall surfaces of the or each box. The adjustable members 6 each control a single hole in each box and are each controlled by a coupling rod 7 actuated by reversing means 8 externally of the apparatus.
Patent GB-598507-A (GB)
Title: Improvements in or relating to hydraulic lifting jacks
IPC: B66F3/42
Filed: 1945-10-31
Abstract: 598,507. Making cylinders. LAKE & ELLIOT, Ltd., BUTCHER, H., HOLLAND, F. G., THAKE, E., and RUDKIN, F. J. Oct. 31, 1945, No. 28887. [Class 83 (ii)] [Also in Group XXX] In constructing a hydraulic jack, the pump body and the cylinder for the lifting ram are welded together at their lower ends, formed with a communicating port, and then welded to the upper face of a base adapted to carry a housing for the operating fluid. In the embodiment shown, the pump body 2, formed from a hexagonal bar and the jack cylinder 1 are welded together at 17 along a groove formed by a chamfer 13, Fig. 6, on one edge of the bar, formed with a communicating port 18 and then welded to a plate 16 by a weld 19, corners 15 of the bar being removed to facilitate this latter weld. The housing 24 forming a reservoir for the operating fluid is secured to the plate 16 by a nut 26 engaging the cylinder 1.
Patent GB-304840-A (GB)
Title: Splash arresters for boots and shoes
IPC: A43B3/16
Filed: 1927-10-31
Abstract: 304,840. Rouse, P. G. Cet, 31, 1927. No Patent granted (Sealing fee not paid). Mudguards. - A splash-arresting device comprises a flexible fringe of slit rubber or bristle material f<1> formed either as part of the construction of the heel or heel tip, or adapted to be permanently or detachably attached thereto. In the form shown, a piece of rubber of channel section has its flanges cut to form a fringe, the cuts in the lower flange being preferably intermediate those on the upper flange, and the device is attached bv a band of rubber b encircling the heel h' and passing around the channel. Alternatively, the fringe of leather, rubber, &c. or brush material may be attached by nails, glue, press-buttons, laces, rubber rings &c. and it may be coloured to match the shoe.
Patent GB-850938-A (GB)
Title: Electrical position sensitive apparatus
IPC: G01S13/58
Filed: 1957-09-16
Abstract: 850,938. Radar. MULVEY, L. B. Sept. 16, 1957 [Sept. 18, 1956], No. 29031/57. Drawings to Specification. Class 40(7). In a radar comprising a single valve superregenerative transmitter-receiver. The magnitude and sense of the relative radial motion of an object is indicated by the deviation of the quench frequency from a datum valve obtained with a stationary object. The radar preferably transmits a beam of circularly polarised radiation and when mounted on an automobile it may control the brakes automatically.
Patent GB-533396-A (GB)
Title: Improvements in or relating to the manufacture of sintered hard metal alloys
IPC: C22C1/05
Filed: 1939-11-01
Abstract: 533,396. Alloys. PHILIPS LAMPS, Ltd. Nov. 1, 1939, No. 29176. Convention date, Nov. 4, 1938. [Class 82 (i)] A method of making hard alloys of the type comprising carbide and auxiliary metal, for example 94 per cent. of tungsten carbide and 6 per cent. of cobalt, or 79 per cent. of tungsten carbide. 15 per cent. of titanium carbide, and 6 per cent. of cobalt, comprises sintering the preformed bodies and thereafter, without removing them from the mould, applying to the sintered bodies increased pressure, preferably in a reducing atmosphere, which may be a mixture of hydrogen and nitrogen. The increased pressure may be maintained during subsequent cooling.
Patent GB-842143-A (GB)
Title: Improvements in and relating to high frequency apparatus
IPC: H03J1/14
Filed: 1956-09-26
Abstract: 842,143. Adjusting radio apparatus. PLESSEY CO. Ltd. Sept. 26, 1956 [Sept. 27, 1955], No. 29376/56. Class 40(5). [Also in Group XXXVI] A fine-tuning capacitor, forming part of a television tuner of the switched type, is adjusted by rotation of a sleeve 36 surrounding the tuning shaft, the sleeve being provided with a discshaped cam 40 formed by gathering and squeezing the material of the sleeve 36 and which bears against a cam follower 39 on a lever 28 which is journalled to pivot about a pin 29 and which carries a dielectric rod 27 on which is threaded the adjustable member 26 of the variable capacitor. A spring 38 ensures that the cam 40 and the cam follower 39 are maintained in contact. instantaneous phase and frequency shifts, will then be proportional to the simultaneous amplitude or slope of the curve. In one circuit for   obtaining a voltage varying between + V/2 and - V/2 of the form shown in Fig. 6, a constant voltage generator 21, Fig. 4, is connected in series with a capacitor 24 across the lines 22, 23. An impulse circuit 26 generates an impulse sufficient to recharge the capacitor 24 to a predetermined level whenever the voltage between   the lines 22, 23, reaches a value - V/2) and similarly an impulse circuit 23 generates an impulse sufficient to fully discharge the capacitor 24 when the voltage across the lines 22, 23, reaches   a value + V/2. The modulating signal 33 controls the voltage generated by the generator 21 whereby the charge on the capacitor 24 varies in accordance with this signal, and the voltage V o (t) at the output has instantaneous amplitudes proportional to the modulating signal, as shown at 31, 32, Fig. 6. In order to obtain a frequency modulated output wave, the circuit of Fig. 4 is modified in that a constant current generator in parallel with a capacitor is substituted for the constant voltage generator 21 in series with the capacitor 24. In a modification, Fig. 11 (not shown), frequency sensitive networks are included before the impulse generators whereby the impulse generators are triggered shortly before the voltage reaches the value + V/2 or - V/2. This is stated to reduce the error due to the flyback time. In some cases it is also desirable to blank out the signals during flyback, Fig. 12 (not shown). Fig. 9 shows a circuit for applying a modulating voltage to the helix of a travelling wave tube. A blocking oscillator 52 serves as a reference level and impulse generator to apply pulses to a capacitor 53, the pentode 54 acting as an infinite impedance source which discharges the capacitor 53 in accordance with the modulating signal applied at 56. The blocking oscillator starts itself when the voltage across the output lines 61, 67, reaches a predetermined value, and the capacitor 53 is then recharged. A diode 63 damps the negative swing back of the oscillator grid. This circuit provides negative going slopes between + V/2 and - V/2 only.