baber/WOPTO huggingface dataset:
Patent GB-770905-A (GB)
Title: Improvements in or relating to devices for decoupling between a number of ultra-highfrequency radiation sources
IPC: H01Q1/52
Filed: 1954-04-20
Abstract: 770,905. Aerials. COMPAGNIE GENERALE DE: TELEGRAPHIE SANS FIL April 20, 1954 [April 18, 1953], - No. 11415/54. Class 40(7)  A plurality of sources of radio-frequency energy located close to one another are decoupled by the use of passive elements each disposed at a distance of the order of a wavelength from one element and re-radiating energy therefrom towards a second element to create at the second element a field which is equal and opposite to that produced by the rest of the energy from the one element at the second. In an embodiment having two sources 1 and 2 comprising the mouths of waveguides 6 and 7, having their shorter dimensions parallel to the plane of the paper, passive elements 4 and 5 are arranged to decouple the sources 1 and 2 one from the other. These elements comprise rectangular metal reflector plates spaced from the guide mouths and at right angles to the plane containing them. The element 4 reflects energy radiated by source 1 towards source 2 with such an amplitude and phase relationship as to cancel out the normal coupling between them. In a modification, Fig. 6, the sources 1 and 2 are again wage guide mouths supported by a circular metal disc but the decoupling device is formed by a hollow hemispherical cap of transparent plastic. The cap serves as a protective device and allows the greater part of the outwardly radiated energy to pass through, a small proportion is however reflected back and the dimensions of the cap are so chosen that the amount of energy reflected from one source to the other produces a field of equal amplitude to that produced by direct coupling. The positioning of the cap is fixed by the support blocks 10 and 11 which are so dimensioned that the two fields are in opposite phase and cancel out. Fig. 7 shows 4 waveguide mouth sources 101, 102, 103 and 104 each of which is decoupled from all the others by the use of reflector plates positioned substantially as shown. To reduce the complexity of this arrangement plates 24 and 42 can be dispensed with as the coupling between sources 102 and 104 is small, plates 13 and 31 retained, and all the remaining plates replaced by a symmetrically arranged plastic cap (Fig. 8, not shown). Any of the embodiments shown may be mounted in the focal plane of a paraboloidal reflector.
Patent GB-987458-A (GB)
Title: Improvements in or relating to central heating boilers
IPC: F24H1/46
Filed: 1962-03-26
Abstract: 987,458. Boiler furnaces. IDEAL-STANDARD Ltd. March 26, 1962 [March 27, 1961], No. 11510/62. Heading F4B. A central heating boiler has two combustion chambers, one for liquid fuel firing and one for solid fuel firing alongside the first. The liquid fuel combustion chamber 1 is constructed from cast iron sections 2 which have waterways connecting with ports 4 and 5, sealing ribs 6, internal sealing ribs 7 and flue portions 11 which lead the flue gas from the front of the boiler to a hood at the rear. The foremost section has an upper door 15 and an oil burner is mounted on a lower door 16. The second combustion chamber 18 has a metal casing 20 lined with firebrick 19, an ash tray 23, a charging door 26, a fire door 27 and an ash door 28. The two chambers communicate by means of slots 29, a heat resisting plate 30 being provided in the solid fuel combustion chamber as a combined deflector and reflector. The boiler has an outer casing 31 with an outer door 32 which will close only when the doors 26, 27 and 28 are closed. The oil burner will operate only when the outer door 32 is closed, electrical or mechanical means being provided to ensure this. A suitable electrical system comprises a contact on door 32 which interrupts the electric motor circuit of the burner when the door is open.
Patent GB-352107-A (GB)
Title: Improvements in weft feelers for looms having automatic cop changing devices
IPC: D03D51/34
Filed: 1930-04-11
Abstract: 352,107. Weft-feeler arrangements. CAMPS, J. P., 80, Colomer Street, Sabadell, Spain. April 11, 1930, No. 11520. [Class 142 (iii).] Indication of weft failure is communicated to means for effecting replenishment by the relative movement of weft and shuttle feelers 1, 2 respectively, the latter being slidably mounted on the former and provided with a hooklike member 3 which, upon predetermined exhaustion of weft, engages a projection 4a and partially rotates a shaft 5 associated with the changing mechanism. The member 3 is pivoted to the shuttle feeler by means of an axle pin 17, and is formed with a downwardly extending toe 18 disposed in a slot 1a formed in the weft feeler 1, whilst both feelers are urged towards the lay by independent springs. Normally the engagement of the weft feeler with the weft causes the combined feeler unit to move and the hook 3 to pass idly under the projection 4a, but, when the bobbin is substantially denuded, the shuttle feeler 2 is engaged by the shuttle, whereupon the toe 18, being brought into contact with the wall of the slot 1a, causes the member 3 to pivot about the point 17, with consequent engagement of the hook with the projection 4a. A cover 6 is provided for the device.
Patent GB-708996-A (GB)
Title: Improvements in or relating to diagnostic compositions
IPC: G01N33/72
Filed: 1952-05-07
Abstract: A blood-detecting diagnostic composition in tablet form comprises a compound which is colour responsive to blood, such as o-tolidine, o-toluidine, tetramethyldiamino-triphenyl methane, hexylidene or o-tolidine dihydrochloride, a peroxide oxidizing agent, an acetate, a water soluble solid organic acid stronger than acetic acid and an effervescent couple.  Oxidizing agents may be sodium carbonate peroxide, sodium perborosilicate, strontium peroxide, sodium pyrophosphate peroxide, barium, magnesium or urea peroxide.  The acetate may be that of sodium, potassium, lithium or calcium whilst the organic acid is exemplified by tartaric, succinic, citric, fumaric, itaconic, maleic, malic, malonic and mandelic acids.  The effervescent couple is constituted by a carbonate or bicarbonate preferably of an alkali or alkaline earth metal, and a solid acid which may be that which is already present.  Diluents such as corn starch or talc are added and the preparation tableted.  In use a sample of the liquid to be tested for blood, for example urine, is placed on a filter paper and soaked in.  The tablet is placed in the centre of the drop and two drops of water are added to the tablet.  A ring of colour ranging from faint to deep blue indicates a positive test.
Patent GB-513731-A (GB)
Title: Improvements in or relating to the application of tape to workpieces of sheet material
IPC: A43D43/06
Filed: 1938-04-19
Abstract: 513,731. Affixing adhesive tape. BRITISH UNITED SHOE MACHINERY CO., Ltd., and SIMMS, E. H. April 19, 1938, No. 11630. [Class 73] In a machine for affixing adhesive tape to sheet material such as a shoe outsole, as described in Specification 292,652, [Class 73], the pressing means comprises a tiltable member, and a single member effects feeding of both the tape and work piece. The hammer 15 forming the pressing means is fitted with a rectangular block 21 pivotally mounted on a stud 25 lying in the direction of feed. The block is controlled by a spring which resists tilting movement but maintains the block in the angular position to which it has been moved; by these means the tape is affixed to both level and inclined surfaces. The feeding member comprises a block 9 to the lower edge of which is attached a toothed bar 11.
Patent GB-286118-A (GB)
Title: Improvements in cylindrical lens grinding machines
IPC: B24B13/02
Filed: 1927-05-02
Abstract: 286,118. Butler, A. May 2, 1927. Lenses, grinding and polishing.-In a machine for grinding cylindrical lenses the lens is supported on a holder 10 which is moved by an eccentric pin 9 on a rotating shaft 4, and the tool 17 is carried on a holder 16 mounted on an arm 13 having therein holes 14, 14<x>, 14 whereby the arm may be pivoted, by a pin 23 or a pin 24, to swing about an axis either above or below the tool, in order to grind a positive curve or a negative curve on the lens. The pin may be inserted in any of three sets of holes 11, 12, 11<x>, 12<x>, 11<0>, 12<0> in a part 1 of the machine frame and in a spaced plate 2, and the arm 13 is rocked about the pin by a link 20 engaging a pin 21 on the arm and moved by an eccentric pin 19<x> on a rotating shaft 18. The pins 23, 24 have grooves 23<x>, 24<x> therein for engagement with latches, whereby they are held in the operative or inoperative position.
Patent GB-617265-A (GB)
Title: Improvements in or relating to switches for electric cookers and heating apparatus
IPC: H01H19/62
Filed: 1946-04-16
Abstract: 617,265. Regulating switches; switches held set and freed mechanically. SOC. ANON. DE PARTICIPATIONS APPAREILLAGE GARDY, and WIDMER, R. April 16, 1946, No. 11676. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 15, 1947.] [Class 38 (v)] In a rotary step-by-step switch for. electric cookers, all the electrical parts are mounted on the base 1 and all the mechanical operating parts are mounted on a U-shaped framework 2 secured to the base. A shaft 14, mounted in the framework 2, carries cams D1 ... D4, each of which acts on a pivoted spring-urged arm, as M5, carrying a contact K5 co-operating with a fixed contact C5. If the cams are rotated clockwise, they bear continuously at point F on arms M5, but if rotated counterclockwise, they first bear on the arms at point N and move along the arm to point F when the contacts are open, the points being so fixed that the reaction on the hinge 6 and the couple turning the cam-shaft remain practically constant irrespective of the direction of rotation. The cams may be formed on two members adapted to act on four or five arms M5 situated in grooves r1 ... r5. The end contact C5 is connected to its adjacent movable contact by a conducting member located in a groove 5 in the base so as to form two breaks in series and successfully disconnect a large direct current. The cam-shaft may be rotated by a quick-action device.
Patent GB-126648-A (GB)
Title: Lathe Chuck.
Inventor: NYBERG ANDREAS NIELSEN
IPC: B23B31/16
Filed: 1919-05-09
Abstract: 126,648. Nyberg, A. N. Feb. 11, 1918, [Convention date]. C h u c k s. - Transverse screw-closing chucks have the adjusting screws prevented from endlong movement by a common ring h with notches k to fit over reduced portions g of the screws and positioned by a shoulder m on the chuck body. The notches k may be lined with suitable wearing-pieces l. By removing the ring It, through the rear of the chuck the jaws with their screws are readily detachable from the chuck body.
Patent GB-328769-A (GB)
Title: Improvements in and relating to cleaner and polish
IPC: C11D10/06
Filed: 1929-04-16
Abstract: 328,769. Bates, R. April 16, 1929. Cleansing and polishing compositions are made by dissolving and heating 5 ozs. of neutral soap in 3 gills of an aqueous extract of the gum of chicken grape vine (vitis cordifolia), and adding a teaspoonful each of table salt and sodium bicarbonate, to form a thick paste which when cold is made into bars, hardened by dipping in brine. An aqueous solution of this composition is then prepared and used to clean and polish metal, glass, china or varnished or lacquered surfaces, or used to remove grease spots from upholstery or fabrics.
Patent GB-216135-A (GB)
Title: Improvements in and relating to methods and apparatus for testing magnetic material
IPC: G01R33/14
Filed: 1924-05-14
Abstract: 216,135. British Thomson-Houston Co., Ltd., (Assignees of Gokhale, S. L.). May 15, 1923, [Convention date]. Magnetic tests and measurements.-The saturation value of magnetic material is determined by saturating a sample of the material, producing an electromotive force in a measuring-circuit proportional to the flux density, opposing this electromotive force by a second electromotive force proportional to the magnetizing-force, and measuring the difference between the opposing forces. Fig. 2 is a diagram of connections in which the specimen 2 is surrounded by a magnetizing-coil 3 which can be connected by switches 20, 21 in series with the primary winding 13 of a variable mutual inductance, an ammeter A, variable resistances 14, 15, and a source of continuous current. A test coil 12 also surrounds the centre of the sample 2, and is connected in series with the secondary winding 22 of the mutual inductance and with a galvanometer G, resistances 23, 24 being provided for calibration. The magnetizing-coil 3 is wound on a spool 4, Fig. 1, and is held in place between the ends of a magnetic yoke 1 by non-magnetic straps 5. Cradles 6 provided with pads 7 to prevent abrasion of the wire are interposed between the coil 31 and the base. The side pieces 8 of the base are of wood or other non-magnetic material, and carry the terminals 9 of the magnetizing- coil 3 and also the terminals 10 of the test coil. The magnetic circuit of the yoke 1 is completed by the sample 2, which passes through the centre of the coil 3. In order to secure good magnetic contact between the sample 2 and the yoke 1, the upright ends of the yoke are forked or provided with openings and each is provided with a keeper 11 and a thumbscrew 12 which clamps the sample in place. In order to carry out a test, it is ascertained that the electromotive forces generated in the coils 12, 22 oppose one another by connecting the coils 3, 13 separately in the circuit by means of the switches 20, 21, and noting the direction of the deflection on breaking the circuit. The mutual inductance between the coils 13. 22 is then adjusted to equality with that between the coils 3, 12 by connecting the coils 3, 13 in series and adjusting the mutual inductance until no deflection is given on the galvanometer when the exciting current is changed, there being either no sample or a saturated sample within the coil 3. The sample is then inserted and raised to saturation by closing the switch 17 and adjusting the resistance 14. To ascertain that the sample is saturated, the magnetizing-current is raised by closing the switch 18, when no deflection should be given on the galvonometer. The exciting- current is then reversed by means of the switch 19 and the galvanometer deflection noted, from which the saturation value can be calculated.
Patent GB-637914-A (GB)
Title: Pulse length measurement
IPC: G08B3/10
Filed: 1948-04-30
Abstract: 637,914. Pulse discriminating circuits. BENDIX AVIATION CORPORATION. April 30, 1948, No. 11949. Convention date, May 7, 1947. [Class 40 (vi)] [Also in Group XXXVIII] A relay system responsive only to pulses of predetermined duration comprises three relays 12, 19, 23, adapted to be energized through R.C. time delay networks 11, 13, 20, 21 and 22, 24 respectively, having time constants such that if a pulse applied between terminal 10 and ground exceeds a minimum duration t1, relay 12 operates to stick from a battery supply 16 and maintain the supply to the delay network of relay 23 which operates after a time t3 greater than the required pulse duration t2, to close an external circuit over contacts 25. The stickcircuit is reset by push-button 17. If the pulse exceeds the maximum duration t2, relay 19 operates before relay 23 to de-energize relay 12 and prevent the operating of relay 23. The Specification states that thermionic valves and thyratrons may be used instead of the relays, to improve the accuracy of the device.
Patent GB-1070774-A (GB)
Title: Improvements in or relating to tunnelling machines
IPC: E21D9/08
Filed: 1964-05-11
Abstract: 1,070,774. Tunnelling machines. JAMES S. ROBBINS & ASSOCIATES, Inc. May 11. 1964 [May 31, 1963], No. 11974/65. Divided out of  . 1,070,773. Heading E1F. In a tunnelling machine mined material is conveyed rearwards through a transverse, cutter head-supporting bulkhead CS of the shield S of the machine to hopper means 42, H 1 , H 2  at the rear of the machine by conveyers 32, 36 housed in tubes 38, 40 of which the larger tube 38 is secured at one end to the bulkhead CS about an opening therein and is so coupled to allow of universal movement at the other end by a flexible sleeve 46 to the forward end of the second tube 40. which has a forwardly directed extension 46 coupled through a universal joint 50, 60 to the bulkhead CS.
Patent GB-1106743-A (GB)
Title: Method of prefabricating a rubber-covered step or flight of steps
IPC: E04F11/16
Filed: 1965-03-23
Abstract: 1,106,743. Rubber covered steps. PIRELLI Ltd. 23 March, 1965 [24 March, 1964], No. 12128/65. Heading B5A. [Also in Division E1] A rubber-covered step, singly or in a flight, having a replaceable nosing is made by placing the rubber coverings 12, 13 for the tread and riser under tension in position in a mould for the step, placing a rubber nosing 6 in position in the mould and coating it with a composition which inhibits bonding of cement thereto e.g. mould oil or silicone wax, then applying a thin screed of quick hardening cement and after this has hardened, filling the mould with cement or concrete preferably in two stages. The nosing is provided with grooves 4 and ridges 5 so that in the finished step, complementary ridges and grooves are formed in the cement. The nosing can subsequently be slideably removed therefrom e.g. when worn.
Patent GB-831477-A (GB)
Title: Liquid fuel injection nozzle
IPC: B05B1/34
Filed: 1957-04-15
Abstract: 831,477. Spray burners. CAMPBELL, J. F. April 15, 1957, No. 12243/57. Class 75(1) An open orifice spray nozzle comprises a substantially cylindrical housing 1 having coaxial inlet and outlet orifices 2, 3 with a swirl chamber 7 upstream of the exit orifice, a valve member 6 fitted for reciprocation in a bore 5 in the housing and having a peripheral valve face 13 in the swirl chamber adapted to seat against a portion 4 of the housing when the valve is fully reciprocated away from the exit orifice and resilient means adapted to hold the valve member seated until the inlet pressure of the fuel rises to a predetermined value. The valve member 6 is cylindrical and provided with a set of helical grooves 9 tapering towards the swirl chamber, and is mounted in a liner 4 in the housing 1. A valve body 12 is mounted in an inner bore 11 of the valve member 6 and has a frusto-conical face parallel to the inner face 8 of the swirl chamber 7 and carrying at its centre an axial extension 15. The valve body 12 has a cylindrical bore closed at one end by a plug 16 so as to provide an annular space 17 communicating by helical grooves 19 with a passage 18 in the extension 15 and by radial passages 20, 21 in the member 6 with the helical grooves 9. A spring wire rod 23 extends from the plug 16 and terminates in a ball 24 seated in a member 27 separated from the liner 4 by a compression spring 25 which can be adjusted. On initial operation, fuel flows through the grooves 9, space 17, grooves 19 and passage 18 until the fuel pressure reaches a sufficient value to unseat the valve face 13 when fuel flows direct through grooves 9 to the swirl chamber 7. The passage 18 may be adjusted so that the spray from it and from the orifice 3 are kept separate or are caused to merge at a selected distance in front of the orifice. The grooves 9 may be limited to the front part of the valve member 6 being replaced at the rear part by longitudinal grooves. In a modification (Fig. 8, not shown), the grooves are omitted, the member then having a generally. frusto-conical form. Specification 763,975 is referred to.
Patent GB-434523-A (GB)
Title: Improvements in and relating to liquid sprayers
IPC: B05B7/24
Filed: 1935-04-24
Abstract: 434,523. Spray-producers. ROWER, C. J., 31, Benett Gardens, Norbury, London. April 24, 1935, No. 12343. [Class 69 (iii)] In a sprayer of the kind in which air under pressure is fed into a spraying head mounted on a liquid container having an airhole 9 communicating with the container and a tube 6 leading to the bottom of the container, air also being used to atomize the liquid, the body 5 of the liquid nozzle is mounted on the spray head by a stem 20 attached to the tube 6, the stem being sufficiently narrow to allow passage of air and the nozzle being centred by vanes 21. The body of the liquid nozzle is provided with a conical tail and the jet is regulated by a needle valve 7 operated by a lever 8, the valve being adjusted by nuts 24 and its stroke limited by a screw 26. The liquid is atomized by air passing around the nozzle 5, additional air being passed through openings 13 regulated by a rotatable ring 14 to vary the angle of dispersion of the spray. The head may be provided with a chamber 10 having a removable plate 15 clamped by a hollow bolt 18 forming part of the liquid pipe 6.
Patent GB-832448-A (GB)
Title: Mechanical device for reading and storing the working positions of a moveable machine element
IPC: B41J7/32
Filed: 1958-04-18
Abstract: 832,448. Calculating-apparatus. STANDARD TELEPHONES & CABLES Ltd. April 18, 1958 [April 20, 1957], No. 12350/58. Addition to 829,470. Drawings to Specification. Class 106 (1). The code plate employed in the apparatus for reading and storing the working positions of a movable machine element, such as the typecarrier of an accounting machine described in the parent Specification is modified in that only two slots are provided in the code plate.
Patent GB-724516-A (GB)
Title: Improvements in or relating to electronic servo systems
Inventor: SEDGFIELD HUGH BROUGHAM
IPC: G05D1/08
Filed: 1951-05-26
Abstract: 724,516. Automatic control systems. SPERRY GYROSCOPE CO., Ltd. May 16, 1952 [May 26, 1951], No. 12389/51. Class 38 (4). In a servo system applied to elevator control by an aircraft automatic pilot, a gyro vertical (not shown) detecting pitch is associated with a potentiometer pick-off P2, a D.C. signal from which is applied to the input terminals A, B of an electronic amplifier 7 the output of which, from the terminals C, D, controls the energization of the winding 12 of an electromagnetic slipping clutch 13 between a continuously driven member 14 and a control valve 45 controlling a hydraulic servomotor 51 correcting the position of the aircraft elevator so that pitch is maintained at a value determined by the setting of a potentiometer P3 supplying a second D.C. signal to amplifier 7 in opposition to the signal from potentiometer P2. Control valve 45 is maintained at a position corresponding to the pitch error by a D.C. follow-up signal which is derived from a potentiometer P4 associated with the control valve, and applied to the input of amplifier 7. The speed of servomotor 51 is thus dependent on the pitch error and a followup signal dependent on servomotor speed is derived through a condenser C1 from a potentiometer P5 associated with the servomotor, and applied to the input of amplifier 7. Specifications 690,982 and 718,171 are referred to.
Patent GB-515147-A (GB)
Title: Improvements in and relating to electric lighting fittings
IPC: F21V17/18
Filed: 1938-04-26
Abstract: 515,147. Lighting fittings. GENERAL ELECTRIC CO., Ltd., BURBIDGE, A. J., and PHILLIPS. L. E. A. April 26, 1938, No. 12482. [Class 75 (ii)] Globes 1 are hinged to a stepped ceiling base 2, 3 at 9 and are, supported in position by tongues 12 on members pivoted at 15 on an annular frame 11 and having inner arms 14 abutting against the base to be held firm. A member 17 can be turned by an arm 22 to lock the globe fixed.
Patent GB-318119-A (GB)
Title: Improvements in or relating to electrical apparatus for the transmission or reception of pictures, diagrams or other representations
IPC: H04N1/08
Filed: 1928-04-28
Abstract: 318,119. Fultom, O. April 28, 1926. Copying - telegraphs. - The recording or transmitting cylinder Z accommodates a supply of recording or transmitting material P1, a length of which can be stretched on the surface of the cylinder, the previous length of material being simultaneously removed. A rod T inside the cylinder carries a roll of recording or transmitting material which extends through an opening O in the cylinder casing. The material is stretched on the cylinder by teeth H1 on a flexible strip F which is rotated round the cylinder.