baber/WOPTO huggingface dataset:
Patent GB-144698-A (GB)
Abstract: 144,698. Western Eleetric Co., (Assignees of Bell Telephone Manufacturing Co.). June 22, 1914, [Convention date] Microphones and variable-resistance transmitters.-In a transmitter of the granular type wherein the electrode attached to the diaphragm is free to vibrate, the granule chamber is closed by a mica disk having an opening through which the movable electrode projects and felt is clamped between a shoulder on the movable electrode and the diaphragm so that the amount of surface it presents to the granules is a minimum. The protecting cover for the diaphragm has a comparatively small hole at its centre. This cover and the diaphragm are held in the case by a ring of spring metal. The granule chamber consists of a metal cup 13 lined with insulating material 31. In the enlarged mouth of the cup a spring band 17 holds a mica disk 18 having an aperture to allow the front electrode 22 to pass through. Clamped between the diaphragm 19 and a shoulder 24 of the mounting piece 21 for the front electrode is an annulus 25 of felt. The cover 26 for the diaphragm has a forwardly extending portion 27 having a small hole 28 therein. A spring metal band 29 confined by the wall 30 of the casing holds the diaphragm and cover-plate in position.
Patent GB-669029-A (GB)
Title: Improvements in and relating to weaving looms
IPC: D03D41/00
Filed: 1947-05-31
Abstract: 669,029. Shuttleless looms; bobbins. EDWARDS, W. H. June 30, 1948 [May 31, 1947; Nov. 6, 1947], Nos. 14492/47 and 29647/47. Classes 120(iii), 142(i) and 142(ii) Weft (which may be flat strip) is drawn from a bobbin 47, Fig. 1, on a conveyer belt 48 by a gripper 44 on an arm 8 which is carried by a rotating beam 9 in such a way that the arm remains at right angles to the warp; the gripper thus follows a curved path which takes it towards the fell and out of the shed (as at 8a), whereupon it releases the weft, which is then cut at 56. Meanwhile, a gripper mounted on the other end of the beam 9 has entered the shed to seize the weft from the next bobbin on the conveyer. Weft inserter. The arms 8 maintain their orientation by means of gearwheels (not shown) on pillars 7 coupled through intermediate wheels to a gearwheel fixed on a stationary shaft 15 about which the beam 9 rotates. The gripper 44, Fig. 5, slides in the arm 8 and is closed by pushing it through a cone 42 against the action of a spring 40; the gripper is operated by a conical cam 36 on a rod 26 riding a cam ring 29, Fig. 1. Bobbins. The weft bobbins 47 are provided with nozzles 52, Fig. 6, to guide the grippers 44 as they grasp the weft, which is fed through the middle of the bobbin. The conveyer belt 48, Fig. 1, keeps the bobbins approximately in line with the grippers as they move towards the fell. Weft of different colours may be arranged on the conveyer. Beating-up. The weft is beaten up by pairs of rollers 54, Fig. 1, which are placed at an angle to the warp so as to stretch the weft as they move it to the fell. Duplex looms. Two looms disposed sideby-side but facing in opposite directions may have weft inserted by one beam 9, the pillars 7 of which have gripper arms 8 on both sides.
Patent GB-1293821-A (GB)
Title: A device for measuring ferrite content
Inventor: SELLARS IAN CHARRINGTON
IPC: G01N27/72
Filed: 1970-03-25
Abstract: 1293821 Electro-physical measurements ELCOMETER INSTRUMENTS Ltd 19 April 1971 [25 March 1970] 14497/70 Heading G1N A magnetic flux density probe includes a permanent magnet 10 and a ferromagnetic tip 12 defining an air-gap in which is mounted a magnetoresistor MR1 and a thermistor Th1. The probe is connected via leads a, b, c, into a bridge circuit, Fig. 2 with the magneto resistor forming one arm and the temperature compensating thermistor forming part of another arm. To measure the thickness of a film of non- ferromagnetic material the bridge is balanced with the tip 12 first resting on a ferromagnetic plate. The film is then placed between the plate and tip 12 and the reading of galvanometer 14 calibrated in thickness of film noted, the amount of bridge imbalance being proportional to the film thickness which varies the flux density in the probe gap. In order to measure the thickness of a nickel film applied to a non-ferromagnetic substrate or the ferrite content of stainless steel, variable resistor VR2 is adjusted to balance the bridge with the probe in free air and then the probe is  applied to the material or object being tested. Since the flux in the air-gap is also dependent upon the magnetic permeability of the object the bridge unbalance gives the measurement of the thickness or content.
Patent GB-290642-A (GB)
Title: Improvements in radio telephone signalling
IPC: B03C3/78
Filed: 1928-05-18
Abstract: 290,642. Armstrong, E. H. May 18, 1937, [Convention date]. Transmitting and receiving systems; thermionic modulating systems ; fading, preventing. -In order to eliminate fading and reduce the effect of static interference, signalling is effected by varying the frequency but not the amplitude of the carrier wave. In reception, different impedance branches are used to convert the frequency variations back into corresponding voltage variations, whilst limiting devices are interposed at the transmitting and receiving ends for maintaining the amplitude constant. In transmitting, Fig. 1, the frequency of the tuned oscillator circuit 1, 3 is varied at speechfrequency by the changing reactance of the closely-coupled valve circuit 6, 7 under the influence of the microphone 10. The resulting oscillations are fed through a coupling-coil 12 to an amplifier 13, and then pass through a limiting valve 16 of the screened-grid type in which any existing amplitude-variations are smoothed out. Before the outgoing signals reach the aerial 25 they are passed through a band filter 20 and power amplifier 23. At the receiving end, Fig. 2, the incoming signals are passed through band filters 32, 35, amplifier 33, and a currentlimiter 34 to eliminate amplitude variations. They are then applied to an input circuit 39, 40, 41, which is so adjusted that the portion BC, across the amplifier 42, is non-reactive for the lowest frequency of the signal band, whilst the portion AC across the amplifier 43 is non- reactive for the highest received frequency. The circuit as a whole is made substantially aperiodic by adjusting the resistance 37, so as to balance out any residual amplitude-variations. In these circumstances the output from the detectors 48, 49 will vary in a straight-line law with the input frequency-variations, but will be indifferent to amplitude variations and will therefore reproduce the original signal in the phones 54. At the same time the effect of static interference is reduced. Instead of the arrangement shown in Fig. 1, frequency modulation may be effected by coupling a push-pull valve amplifier across capacitative and inductive reactions arranged on the input circuit of the oscillator valve. In order to reduce damping in the receiver circuits, a valve 63, Fig. 4, may be applied across a resistance 62 in the input branches A B C so as to introduce a negativeresistance effect through a tapping from the plate resistance 64.
Patent GB-1331014-A (GB)
Title: Double-acting pneumatic or hydraulic piston and cylinder  device with mechanical locking means
IPC: F15B15/26
Filed: 1972-03-29
Abstract: 1331014 Fluid pressure operated actuators DUDEINS INDUSTRIEGERATE - HANDELS GmbH 29 March 1972 [2 April 1971] 14677/72 Heading F1D The rod 4 of double-acting fluid pressure operated pistons 23, 24 is locked in any position by frictional engagement with the cylinder wall 1 of a swivel plate 19 located between flanges 11, 12 fixed to the rod 4 and having projections 13, 14 one or other of which e.g. 14 moves plate 19 into the locking position shown when the downward load overcomes the upward fluid pressure thrust on the underside of piston 23, and the plate is moved to a position normal to the cylinder axis i. e. unlocked by working fluid pressure acting directly or indirectly on one or other of rams 17, 18 mounted on opposite sides of plate 19. Pistons 23, 24 are capable of small axial movement along the rod 4 determined by the flanges 11, 12 and stops 6, 7. In the absence of fluid pressure supply, plate 19 may be unlocked by downward axial movement of a nut 8 on stop 7 until it forces piston 24 against ram 18 and thus restores plate 19 to its normal position; nut 8 being held against rotation by a rod inverted in a bore 9 whilst rod 4 is rotated. In a modification the rams (17b, 18b) Fig. 3 (not shown) are pistons mounted in recesses (29, 30) in the flanges (11b, 12b) which themselves sealingly engage the cylinder wall.
Patent GB-1138752-A (GB)
Title: Improvements in and relating to hydraulic fuel control
IPC: F02K3/00
Filed: 1966-04-01
Abstract: 1,138,752. Gas turbine engine fuel systems. UNITED AIRCRAFT CORP. April 1, 1966 [April 2, 1965], No.14687/66. Heading F1G. [Also in Division G3] A computing apparatus controlling the flow of fuel to the burners of a gas turbine engine comprises a pump 16 delivering fuel to a passage 32 which is connected by parallel passages 36, 38, 40, 42, 44, 46 to a passage 20 connected to the burners through a control valve 18. Each parallel passage contains two valves responsive to various parameters of the engine, the pressures between the valves being used to control the fuel valve 18. In passage 36, the valves 77, 81 are responsive to compressor speed and inlet temperature respectively and the pressure between the valves is indicative of W/P where W is fuel flow and P the   compressor delivery pressure. The valves 67, 68 in passage 40 are responsive to speed and a manual setting to produce a pressure indicative of P/W and if this exceeds a set minimum value determined by the valves 60, 62 in passage 38, flow is permitted through a non-return valve 70. The valves 74, 76 in passage 42 are responsive to 1/## and W/P## where # is the compressor inlet temperature. In passage 44 valve 84 is responsive   to 1/#X and valve 86 to W/P#<SP>X</SP> where x is a thermodynamic value of the working medium. The pressure in 42 and 44 are fed to an OR valve 78 which produces the higher of the two signals and this is fed, together with the signal from passage 40 to a second OR valve 64. The output from this valve is compared with a signal in passage 46 in comparator 54 which adjusts the valve 18. Valve 48 in passage 46 is responsive to compressor delivery pressure and valve 50 to the position of the fuel valve 18. A valve 24 maintains a constant pressure drop across the valve 18.
Patent GB-656664-A (GB)
Title: Improvements in or relating to base mountings for trolley poles of electric vehicles
Inventor: RAYER FREDER ICK HOMER
IPC: B60L5/12
Filed: 1948-06-01
Abstract: 656,664. Current collectors for electric vehicles. BRUSH ELECTRICAL ENGINEERING CO., Ltd. June 1, 1948, No. 14739. [Class 104 (iii)] A base mounting for a trolley pole is attached to the roof of a vehicle by a resilient connection comprising one or more pairs of journals 3 secured on the underside of the trolley pole base 1 to receive one or more coupling members each consisting of a metal rod 6 surrounded by a sleeve or tube 9 of rubber or other resilient insulating material located between inner and outer metal tubes 8, 10, the ends of the rods 6 being mounted in apertures in a pair of parallel metal channels 5 secured to the roof of the vehicle. Fibre washers 12 are preferably interposed between the ends of the sleeve members and adjacent faces of the metal channels, and a metal reinforcing member 13 may be located in the channel, beneath the securing nuts 7 on the ends of the rods 6. Axial movement of the sleeves 9 relative to the journals 3 may be prevented by set-screws 11 which pass through the journals into holes or recesses in the metal tubes 10. A rain-shield 21 may be provided. In a modification the journals are secured to the roof of the vehicle, and the channels supporting the coupling-rods are mounted on the underside of the trolley-base, while in a further modification each coupling member is mounted in a pair of end journals secured to the underside of the trolley base and an intermediate pair mounted on the vehicle.
Patent GB-119549-A (GB)
Title: Improvements in Machines for Thread Milling, End Milling, Circular Profiling, and like purposes.
Inventor: GEORGE WILLIAM JOHN
IPC: B23G1/32
Filed: 1917-10-12
Abstract: 119,549. George, W. J., and Bough, F. P. Oct. 12, 1917. Milling-machines. -Relates to machines for screw-cutting, and facing, profiling, &c., and consists in means for moving the work-spindle slide axially, for adjusting the driving-gear for profiling, and for locking the work-spindle against rotation while the chuck is opened and closed. The work-spindle 21 is carried on an axially moving slide 7, pulled towards the toolhead 14 by a weight 15 under the control of a hand-lever 9 which is pivoted at 11 to the machine-bed and carries a pin 13 working in a transverse slot 8 in the slide 7. A collar 22 on the work spindle is slotted to receive a projection 28 on a hand-lever 24 to lock the spindle against rotation. The spindle 21 is driven by worm gearing, the worm wheel 30 being loosely mounted and coupled to a slotted flange 29 by screws 32 each of which can be placed in one of a set of holes 33 in the wheel.
Patent GB-876305-A (GB)
Title: Improvements in or relating to electrical signalling systems
Inventor: BARRETT JOHN ALBERT
IPC: C07C51/265
Filed: 1960-04-27
Abstract: 876,305. Automatic volume control. BRITISH TELECOMMUNICATION RESEARCH Ltd. April 27, 1960, No. 14801/60. Addition to 864,442. Class 40 (4). In a modification of the automatic gain regulator described in the parent Specification a tapped impedance IP is connected across the secondary of the transformer TR and the compensating impedance Z is connected to the tapping on the impedance IP.
Patent GB-1416133-A (GB)
Title: Cable connector
IPC: H01R9/05
Filed: 1974-04-03
Abstract: 1416133 Connector LINDSAY SPECIALITY PRODUCTS Ltd 3 April 1974 [4 April 1973] 14897/74 Heading H2E A connector for attachment to the end of a coaxial cable 18 comprises conducting housing 12 with integral skirt 40 to receive cable sheath 20 while the protruding end of inner conductor 21 enters before compression the split collet 22, trapped in rear insulating bush 48 with forwardly extending central electrode 27 held in front insulating bush 26, itself retained by a crimped shoulder on the front of the housing. The skirt 40 has a conically tapered exterior at the rear, with two opposing diametrically opposite longitudinal slots and two equispaced interposed narrower longitudinal slits extending forward to 0-ring sealing 36. Two opposed radial webs integral with insulating bush 48 protrude through the slots so that on screwing cap 14 on to the housing, conically tapered inner surfaces 54, 52 simultaneously compress the skirt causing internal circumferential serrations 56 to grip cable sheath 20, and compressing collet 22 on to inner conductor 21. Housing 13, cap 14 and rear cap 16 carry hexagonal nut-forms; the cap being tightened by rotation of rear cap 16, compressing "0"-ring seals 64 and 36. "O"-ring 30 seals the connector into a mating mounting or connector. In an alternative embodiment (Fig. 4, not shown) cap 14 and rear cap 16 are integral, and the "O"-ring 36 now lies externally between the front of the cap and a square shoulder on the housing.
Patent GB-402130-A (GB)
Title: A new or improved yarn clearer
IPC: B65H63/06
Filed: 1932-05-26
Abstract: 402,130. Yarn clearers. ENGLISH NEEDLE & FISHING TACKLE CO., Ltd., and PRISCOTT, W. T., Central Works, Studley, Warwickshire. May 26, 1932, No. 14923. [Class 120 (ii).] In a yarn clearer of the type having two parallel jaws forming a slit, both jaws are adjustably mounted to slide in a direction inclined to the slit, means being provided for moving the jaws simultaneously. The jaws 1 5 a r e slidably mounted in the support 12, and are guided in directions inclined to the slit by the upturned sides 13 and tongues 16, 17. The slit is adjusted by rotating the pin 34, which rotates the cam 25 and so lowers or raises the block 23, which engages shoulders 29 on the jaws. The block 23 is guided vertically by two lugs on its rear face which enter the slot 20. The block is kept in contact with the shoulders 29 by means of a spring 28. By tightening the nut 33, the cover plate 30 clamps the jaws in position.
Patent GB-1202365-A (GB)
Title: Improvements in or relating to pallets for carrying workpieces for machining
IPC: B23Q17/22
Filed: 1967-03-15
Abstract: 1,202,365. Load handling pallets. MOLINS MACHINE CO. Ltd., and D. T. N. WILLIAMSON. 8 Aug., 1967 [15 March, 1967; 5 May, 1967], Nos. 14923/70 and 14924/70. Divided out of 1,202,361. Heading B8H. [Also in Division B3] Workpiece pallets 301, 302 carry datum pads 310 against which a tip of a tool held loosely in a chuck is pressed, the chuck being closed on to the tool shank when the tool is set by the datum pad. The pallets are moved within a computer controlled machine tool installation in pairs linked together by lugs 303, 304, 305, 306. The pairs may be unlinked and operated on singly within a machine tool. Magnetic/non-magnetic plugs 309 provide a binary code identification. The pallets are used in the computer controlled machine tool installation described and claimed in Specification 1,202,361.
Patent GB-253906-A (GB)
Title: A method of applying coatings to wires, cables, and the like, and compositions therefor
IPC: C09D101/12
Filed: 1926-06-14
Abstract: 253,906. Girard, A. E. P., and Roumazeilles, M. J. P. June 16, 1925, [Convention date]. Insulating coverings for cables; cables and conductors, apparatus for making.-In coating or impregnating wires or cables consisting of a metal core covered with textile material, cellulose ester, with solvent plastifiers, is applied as a solution under pressure and in successive thin layers, each layer being dried in an oven at a temperature of from 60‹ to 120‹ C. Apparatus for applying the composition comprises a guide pulley B, Fig. 1, a vessel R containing the composition, a grooved wheel F dipping into the composition and rotated by independent means which applies the composition to the wire &c., and a metal nozzle C having a rubber tip E fitted thereover through which the wire &c. passes. The bore L of the rubber tip is such that the wire passes with some friction so that excess composition is wiped off and accumulates in the tip E under pressure owing to the restricted outlet of the nozzle C. The pressure forces the composition into the cord, or into the fabric in the case of covered cables. The nozzle may be lengthened by means of a tube 10 to 15 cms. long carrying at one end the rubber tip and being reduced in diameter at the other, by which means the composition is put under pressure throughout the length of the tube. After issuing from the tip E the wire passes through a drying oven G, Fig. 2, heated to a temperature of from 60‹ to 120‹ C., and thence over a pulley B<1>, through a second coating apparatus R<1> similar to the first, and again through the oven G. Any number of coating appliances may be used, the wire being passed through the oven after each coating. A composition for wires, threads, &c. of small diameter consists of from 8 to 10 per cent of cellulose acetate. 20 to 30 per cent of methyl acetate, acetone, &c., 15 to 20 per cent of alcohol, 15 to 20 per cent of benzine, and 15 to 20 per cent of plastifier. A composition for wires, threads, &c. of large diameters consists of from 10 to 15 per cent of cellulose acetate, 20 to 25 per cent of methyl acetate, acetone, &c., 10 to 15 per cent of alcohol, 10 to 15 per cent of benzine, and 15 to 30 per cent of plastifier.
Patent GB-566481-A (GB)
Title: Spring loaded nut
IPC: F16B39/32
Filed: 1943-09-11
Abstract: 566,481. Locking nuts. SMITH, H. E., and SMITH, J. Sept. 11, 1943, No. 14945. [Class 89 (i)] Nuts are locked by a spring wire e bowed inwards to engage the bolt thread and secured by peening in lateral grooves at the base of projecting lugs c formed by cutting a slot b across the top face of the nut.
Patent GB-1065858-A (GB)
Title: Electron beam apparatus
IPC: H01J37/24
Filed: 1964-04-10
Abstract: 1,065,858. Welding and cutting by fusion; brazing. GENERAL ELECTRIC COMPANY. April 10, 1964 [April 30, 1963], No. 14978/64. Headings B3R and B3V. [Also in Divisions G3 and H1] In electron beam irradiation apparatus comprising a hollow perforated cathode structure 12 in an enclosure 1 containing an ionizable gas, the cathode being at a negative potential relative to the enclosure to produce a plasma within the cathode, and having an aperture 13 through which an electron beam issues from the plasma, the gas pressure is automatically controlled by means responsive to variations in the focus and/or intensity of the electron beam. As shown, cathode 12 and a workpiece 4 are mounted in a metal enclosure 1, containing argon or helium, and provided with gas inlet and outlet valves 9, 11. The cathode is at a negative voltage of 10-25 kv. relative to enclosure 1, and the gas pressure is adjustable up to about 50 microns. An electrical circuit for sensing change in beam focus includes a potentiometer 20 connected to an apertured partition 5 which is insulated from enclosure 1. Potentiometers 27, 32 connected to enclosure 1 and workpiece 4, respectively, provide output signals dependent on beam intensity. Potentiometers 20, 27, 32 may be used singly or in combination to provide input signals to an electro-mechanical transducer which controls the position of either one or both of valves 9, 11 to control the gas pressure. A gas pressure gauge 36 may provide an additional input signal to the transducer, and is used in presetting the desired operating pressure. A control electrode having an aperture aligned with apertures 13, 6 may be provided within cathode 12 to control the beam intensity independently of beam focus. The electron beam apparatus may be used for metalworking e.g. cutting, welding or brazing, and may be used in a vacuum environment such as a space simulator, or around an orbiting space vehicle, the cathode, secured to a part only of metal enclosure 1, being surrounded by a flexible container, e.g. a plastic bag, which is inflated to the appropriate gas pressure, Figs. 3 and 4 (not shown).
Patent GB-182646-A (GB)
Title: Improvements in and relating to railway rail joints
IPC: E01B11/06
Filed: 1921-05-30
Abstract: 182,646. Katcher, J., and Smith, E. May 30, 1921. Rail joints are formed with fishplates 2, 3 each having lugs. 4 passing through the rail webs and openings 5 in the opposite plate and having wedge - shaped ribs 8, 9 engaged by a yoke 14. The upper face 11 of each rib is flat, the face of the rib 9 being engaged by the yoke 14 and the face of the rib 8 forming a seat for a wedge 24 which engages grooves 12, 22 in the plate 2 and yoke 14. The wedge has a, series of holes to receive a cotter pin 26 and is inclined in an opposite direction to the rib 8. Two of the lugs 4 on the fishplate 2 receive copper sleeves 6 connected by a wire 7 in a channel in the plate, the sleeves 6 and wire 7 being compressed between the fishplate and the rails to bond the rails.