baber/WOPTO huggingface dataset:
Patent GB-527495-A (GB)
Title: Improvements in or relating to radio direction finders
IPC: G01S1/02
Filed: 1939-03-14
Abstract: 527,495. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., COCKERELL, C. S., and PARKER, G. P. March 14, 1939, No. 8205. [Class 40 (v)] Relates to a direction-finder of the kind in which the signals picked up by a constantly-rotated frame FA and a vertical aerial VA are combined at A, rectified at RE, and applied through a phase-splitting circuit R, C to the two deflecting plates P<SP>1</SP>, P<SP>11</SP> of a cathode ray tube, so as to cause the spot to move in a circular path over the fluorescent screen. According to the mvention, the position of the spot is made visible, once in each frame revolution, by a cam-operated switch contact CO, so as to show both the direction and " sense " of the distant transmitter. The signals may also be audibly modulated and fed through a branch circuit to a pair of headphones, the sub-frequency due to the rotating frame being removed by using a second intermediate-frequency and detector stage, followed by a low-frequency amplifier, which applies an AVC voltage having a time-constant short as compared with the submodulation note. A low-pass filter, having a bandwidth half the frame frequency, is inserted in the branch circuit feeding the cathode ray tube, and serves to minimize the disturbing effect of any interfering signals. Alternatively the first localoscillator of the superhet receiver may be continuously " wobbled," in which case the presence of an interfering signal is indicated by a corresponding wobble of the spot of light, which otherwise remains quiescent. By using a two-cylinder electrode system o, i, Fig. 4, and applying a high frequency across them, the spot of light may be drawn out into a radial line so as to give a clearer indication of direction.
Patent GB-1378936-A (GB)
Title: Dry-type air filters
IPC: F02M35/022
Filed: 1972-02-22
Abstract: 1378936 Air filter for I.C. engine; centrifugal separators BURGESS PRODUCTS CO Ltd 22 Feb 1972 8223/72 Headings BIT and B2P An air intake filter for an I.C. engine comprises a cylindrical casing 10 enclosing an annular filter element 12 and having an axial outlet 20 and a tangential inlet 14 at one end and a dust-collecting cup 18 at or adjacent the other end, a baffle 16, 17 firstly shielding element 12 from incoming air at inlet 14 and secondly directing the air to flow helically along the casing. As shown cup 18 is removably attached to casing 10 by clamping band 54 and has a lid 36 with an entry slot 38 for the dust. In Figs. 5, 6 (not shown) the cup 18 has a rubber dust unloader (60) at the lowest point on its cylindrical wall. In Fig. 7 (not shown) the cup 18 is secured to the cylindrical wall of the casing 10 whose end is closed by a removable cover (66).
Patent GB-909574-A (GB)
Title: Improvements in or relating to producing optical and ophthalmic lenses from thermosetting synthetic resins
IPC: B29D11/00
Filed: 1958-10-30
Abstract: 909,574. Moulding lenses. LENTILLES OPHTALMIQUES SPECIALES S.A. Oct. 30, 1958 [April 25, 1958], No. 8237/62. Divided out of 909,573. Class 87(2). A lens is moulded between mould parts 24, 25 of tempered glass as described in Specification 909,573, but a peripheral seal is not used. The mould parts are adjusted by a knob 31 to a predetermined spacing, the space 34 filled with the. monomeric resin, and the assembly placed in an oven. The mould may be removed from its supporting jig during polymerization.
Patent GB-653009-A (GB)
Title: Improvements in or relating to devices for phase modulation of electric oscillations
IPC: H03C3/12
Filed: 1948-03-19
Abstract: 653,009. Phase modulation. AUTOPHON AKT.-GES. March 19, 1948, No. 8299. Convention date, April 3, 1947. [Class 40 (v)] A phase modulator comprises three coupled oscillatory circuits K1, K2, K3 to the first K1 of which an input voltage of constant frequency and amplitude is fed, the second circuit K2 coupled to the first comprising a variable reactance controlled by a modulating voltage and the third circuit K3 also coupled with the first, producing a voltage Vf of constant frequency, amplitude and phase in opposition to the mean value of the phase in the second circuit, and half the amplitude at the mean phase so that across the opposed outputs Vv, Vf of the second and third circuits a phase modulated voltage Va free from amplitude modulation is derived, and with the second circuit phase modulation approximately doubled. When output Va is considerably loaded detuning may be avoided by connecting the circuit K2 to a centre tap of the coil of the circuit K3 and connecting a compensating impedance between the free end of circuit K3 and circuit K2. If impedance instead of inductive couplings are used and the mean phase of the amplitude Vvo (Fig. 7), in circuit K2 makes an angle #0 other than 90 degrees with the input voltage Ve of circuit K1, the opposing voltage Vf again equals one half of Vvo and bears a phase relation to Ve opposite to that of Vv0. The three coils may be mounted on a cylinder with the coil of circuit K adjustable between fixed coils of circuits K2, K3.
Patent GB-622565-A (GB)
Title: Improvements in electrical plug and socket connectors
IPC: H01R27/00
Filed: 1947-03-27
Abstract: 622,565. Two-part couplings. FAULKNER, A. W. March 27, 1947, No. 8376. [Class 38 (i)] A plug adaptable to two or more sockets of different ratings comprises a cylindrical body 10 having a cover 11 and, in the embodiment shown, three sets of pins for 2, 5 and 15 amp. sockets respectively, slidable in bores therein. Moulded in the base of the body are metal inserts 21, 28, 34, each having three tapped holes through each of which one pin of each set can project. A disc 16 rotatable on the base of the body has three sets of holes corresponding to each rating so that when, say, a 15 amp. plug is required, the disc is turned until the appropriate holes therein correspond with the holes 22, 29, 35 in the inserts, whereupon the 15 amp. pins 15E, 15N, 15L can be slid out of their bores and threaded heads thereon screwed into the holes 22, 29, 35. Inserts 21, 28 are connected by straps 26, 32 to terminals 27, 33, respectively, located on top of the body. Insert 34 is connected by a lug 52 to a 15 amp. terminal 51 and is also connected through lugs 38, 40 and cartridge fuses located in bores 39, 41 in the body, to 2 amp. and 5 amp. terminals 48, 49, respectively. In a modification, the inserts and terminals are mounted on a part of the body rotatable relatively to another part carrying the pins, so that rotation of the parts brings the sets of pins one at a time into registration with the appropriate inserts for projection therethrough.
Patent GB-767276-A (GB)
Title: Method and apparatus for producing filter cigarettes provided with filter mouthpieces
IPC: A24D3/02
Filed: 1955-03-23
Abstract: 767,276. Cigarette - making machines. KORBER, K. March 23, 1955 [April 7, 1954], No. 8425/55. Addition to 767,275. Class 130 In a modification of the mouthpiece cigarette-making machine of the parent Specification, the multi-length filter rods 2 are fed towards the adjustable stop 5 by a conveyer belt 4 on which they are pressed by a round belt 7 which is raised out of contact with the rods 2 during cutting thereof into double length sections by the knives 6. The belts 4 and 7 move at a speed faster than that required by the rate of cutting of the rods 2 into double length sections and the belt 7 is carried by a frame 9 fixed to a lever 10 pivoted at 10a and actuated by a cam so that the belt 7 is swung upwards during cutting of the rods. The rods 2 are delivered from a magazine 1 on to the belt 4 by fingers 3a on an endless chain 3 which moves at a slower speed than the belts 4, 7, whereby each rod is accelerated away from the next rod to be delivered from the magazine.
Patent GB-235673-A (GB)
Title: Improvements in or relating to corrugated fibre board boxes
IPC: B65D5/56
Filed: 1924-04-03
Abstract: 235,673. Thompson & Norris Manufacturing Co., Ltd., and Whittaker, T. April 3, 1924. Lined boxes formed from special blanks.-In corrugated fibre board boxes formed from a single blank, Fig. 3, having transverse scorings A<4> which enable the blank to be folded and longitudinal scorings A<5> and transverse slits A<3> which provide the end closing flaps A', the blank is provided with a permanently affixed resilient layer B which extends along one side of the blank across the scorings A<4> so as to form an inner lining when the blank is folded, Fig. 1. The lining may comprise a layer of corrugated material fixed to the blank with the plain surface facing inwards and end pieces of lining material may be fitted against the edges of the lining B so as to be covered by the flaps A<1>; these end pieces may be separate from or part of the lining B and may be fixed to or separate from the innermost closing flaps A<1>.
Patent GB-667737-A (GB)
Title: A new or improved apparatus for a game
IPC: A63F3/00
Filed: 1950-04-04
Abstract: 667,737. Board games. MOORE, H. N. April 4, 1950, No. 8488/50. Class 132 (ii). Apparatus for playing games such as noughts and crosses in three dimensions comprises a transparent pillar 10 and four transparent plates 11 ... 14 each divided into sixteen areas which may be defined either by marking or by slight differences in the plate thickness at these areas. In a modification, Fig. 5, not shown, the playing pieces have projections which fit into holes in the plates. The plates may have central bosses fitting on the pillar, the bosses having at their bottoms two grooves at right-angles for locating a pin projecting from the pillar so that the plate can be turned to one of four angular positions. The bottom plate 14 has downturned flanges 15 which can grip a container for the playing pieces. Specification 640,008 is referred to.
Patent GB-1179968-A (GB)
Title: Magnetic Memory Devices.
IPC: G11C15/02
Filed: 1968-02-21
Abstract: 1,179,968. Magnetic data storage apparatus. NIPPON ELECTRIC CO. Ltd. 21 Feb., 1968 [21 Feb., 1967], No. 8508/68. Heading H3B. [Also in Division G4] An associative method of using a magnetic wire memory comprising a parallel array of magnetic wires having uniaxial magnetic anisotropy, perpendicular to a parallel array of sets of electrical conductors comprises, for write-in, simultaneously applying a magnetic field in a direction of easy axis of magnetization and, another magnetic field in a direction of hard axis of magnetization by causing currents to flow in the magnetic wire and in one of the conductors, for read-out applying a magnetic field in a direction of hard magnetization by causing a current to flow in either the magnetic wire or one of the conductors and receiving a signal on either one of the conductors or the magnetic wire respectively, and, for search applying a magnetic field in a direction of hard magnetization and a magnetic field in either direction of easy magnetization by causing an interrogate positive or negative current, depending on the value of the lists of the word required, to flow in either the magnetic wire or one of the conductors to produce non-destructive readout and to produce a read-out signal on either one of the conductors or the magnetic wire respectively. Bits of a word in an interrogate register 10 are passed via a mask register, to select appropriate bit position for interrogation, to a drive circuit which produces interrogation pulses of appropriate polarity to be passed along the magnetic wires. A current passed along one of the conductors causes the magnetic vector to be rotated to positions 30, 31 depending on whether the data stored is " 1 " or " 0." The interrogate current alters the vector to increase the flux linkage if the corresponding interrogate bit and stored bit differ and to decrease the linkage if they are the same, a matching or mismatching pulse occurring on a sense wire coincident with or situated in the same plane as the appropriate one of the conductors. The pulse is applied to a detection matrix the elements of which are all set to the same state, either all " 1 " or all " 0." The pulses corresponding to mismatch are arranged to alter the state of the appropriate element. Alternatively the easy direction of magnetization may be axial and the hard direction circumferential which would transpose the effect of currents in the magnetic wire and conductors.
Patent GB-330642-A (GB)
Title: Improvements in or relating to electrical signalling systems
IPC: H04B3/04
Filed: 1929-03-16
Abstract: 330,642. Western Electric Co., Ltd., (Bell Telephone Laboratories, Inc.). March 16,1929. Amplifying systems; simultaneous telegraphy and telephony.-In a signalling system, particularly for telephony over a submarine cable, the signals are pre-distorted in such a manner that the amplitudes of the several components are rendered more nearly equal, at a point in the transmission channel e.g. at the receiving end, and at least equal to the amplitude of corresponding interfering or noise frequencies, the original relationship between the amplitudes of the signal components being restored at the receiving end. Fig. 1 shows a two-way terminal arrangement associating a land line 11 u'ith a submarine cable 18, and Figs. 2 and 3- show amplitude-frequency curves for various stages at the transmitting and receiving ends, respectively. Curve a represents the amplitude distribution in the air before exciting microphone 9 and curve b the distribution after passing through the line 11. A filter 13 suppresses all frequencies below 400 and above 2500 (curve b<1>), thus permitting more energy to be put into the remaining frequencies. Two attenuation equalizing amplifiers 14, Hi give respectively the curves c, c', the latter introducing the required distortion, and a uniform amplifier 16 then gives the curve d which represents the currents actually put into the cable. The unequal attenuation produced by the cable gives a reception curve e, Fig. 3, which owing to the pre-distortion is more nearly uniform and is at all points above the noise-distribution curve f by a minimum found necessary for intelligible reception. A uniform amplifier 19 and a distorting amplifier 21 produce too curves g, h, and i, k, the latter representing the currents actually put into the receiving telephone which gives acoustic waves represented by m, n. A filter 20 suppresses frequencies below 400 and <Lbove 2500 in the noise currents. The frequencyband below 400 may be used for simultaneous telegraphy. Specifications 151,140 and 202,284 are referred to.
Patent GB-786186-A (GB)
Title: Overvoltage protection device
IPC: H02H7/16
Filed: 1956-03-20
Abstract: 786,186. Protective arrangements. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 20, 1956 [March 23, 1955], No. 8620/56. Class 38 (4). Relates to over-voltage protective devices of the type described in Specification 751,443 in which a plurality of series spark-gaps 4a ... 4d form a main diverter across the equipment 1 to be protected, and a number of impedance elements 5a . . . 5d in series connection are arranged to form a voltage divider across the main diverter. A precision gap 6 is connected in an impedance network comprising branches 15, 17, and 16, 18, this network being connected directly to terminal C, and through an impedance 19 to terminal X. The impedances 15, 16 may be low-ohmic resistances, and the impedance 19 may be a resistance or inductance of low value. An excessive voltage across the equipment 1 causes the gap 6 to break-down so that capacitors 17, 18 are connected in series and a high potential is developed across terminals A and C. This causes the spark-gap 4b to break-down, whereby a new voltage distribution is obtained which effects the break-down of the gap 4c. The break-down of gaps 4a, 4d follows, and excessive current is diverted from the equipment 1. The connection of the impedance network to the terminal C may be made through an additional spark-gap, the impedance network may have more than two branches, and the voltage divider may comprise several parallel-connected branches as described in Specification 785,187. The voltage divider may be indirectly connected to the series spark-gaps of the main diverter through coupling impedances.
Patent GB-768202-A (GB)
Title: Improvements in or relating to belt conveyors
Inventor: PEARCE HAROLD
IPC: B65G45/12
Filed: 1955-03-25
Abstract: 768,202. Endless-belt conveyers. JENKINS & CO., Ltd., W. J. Oct. 27, 1955 [March 25, 1955], No. 8685/55. Class 78 (1). A scraper device 15 for cleaning the belt 2 is pivotally mounted on the shaft 3 of the head pulley 1 by means of housings 7 which can be turned by arms 21 so that the scraper can be located above the belt, as shown in broken lines, in which position it is readily accessible. Each housing 7 is secured to a side frame 8 which carries a pair of tubular guides 10. Rods 11 are slidably mounted in the guides and protrude from each end. The side-plates 16 of the scraper are pivotally connected to shackles 12 which are secured on the rods 11 by nuts 13. Springs 18 mounted on the rods between the guides 10 and adjustable abutments 19 urge the scraper blades 17 towards the belt. The arms 21 are secured to the frames 8 and bear on stops 22 when the scraper is in the operative position. One of the rods 11 carries an arm 23 for engagement with a push-button switch 25 mounted on a housing 7 and arranged in the circuit of the driving motor for the conveyer. This engagement occurs when the scraper is moved abnormally either by a tear in the belt or by an excessive amount of material. The blades 17 may be secured to end-pieces to form a unit which is pivoted to the side-plates 16.
Patent GB-487710-A (GB)
Title: Improvements in or relating to instruments for determining the roughness of surfaces
IPC: G01B11/30
Filed: 1937-03-25
Abstract: 487,710. Surface gauges. SHAW, H. March 25, 1937, No. 8746. [Class 106 (ii)] Comprises a construction of apparatus for determining the roughness or unevenness of surfaces in which errors due to slides or prints, and to inaccuracies of the setting of the work surface relatively to the tracer path are eliminated. The rider D or D<1> which contacts with the surface A to be gauged or with a guide surface A<1> approximately parallel to it is carried by a tubular member B pivoting by means of a ligament F. Pivoted by a ligament E inside the member B is a lever C, one end of which carries a tracer or stylus while the other carries a mirror L reflecting a pencil of light HJK on to a photographic plate or film M.
Patent GB-924765-A (GB)
Title: Improvements in or relating to fluid pressure responsive instruments
Inventor: OLIVER WALTER LEONARD
IPC: G01L13/02
Filed: 1961-03-10
Abstract: 924,765. Measuring pressure electrically. MINISTER OF AVIATION. Feb. 22, 1962 [March 10, 1961], No. 8827/61. Class 40 (1). Inertial forces acting on a pressure-responsive member 20 of relatively low density, are substantially cancelled when the body 11 of a pressure-responsive instrument is accelerated in either sense in the direction of member movement, the annular responsive member 20 being supported in a liquid 17 of relatively high density by the common closed end 14 of two extensible tubular members 18, 19, or two parts of a single such member. Gas or liquid pressure applied through connection 22 acts on the closed end 14 of the chamber 18 and thus causes slider 26 insulatedly mounted on the end member 14 to move relatively to a potentiometer resistor 23 mounted on the instrument case 11. Alternatively, the chambers 18, 19 may be differentially connected to separate pressure sources. The open ends 15, 16 of members 18, 19 are sealed on to the casing 11, so that when the instrument is accelerated in the direction movement of member 14, then the body 20 and member 14 tend to move in opposite directions so that the effect of acceleration on the composite component is substantially eliminated. Specification 899,494 is referred to.
Patent GB-222162-A (GB)
Title: Improvements in brakes for road vehicles
IPC: B60T13/06
Filed: 1923-03-28
Abstract: 222,162. Royce, F. H. March 28, 1923. Applied by running axle or wheel; hand and foot actuation; force-transmitting mechanism.- The brakes on one pair of wheels of a road vehicle preferably the front wheels, are directly applied and a friction clutch driven by a running shaft of the vehicle for applying the. brakes on the other pair of wheels is brought into operation by a single hand lever or pedal acting through equalizing mechanism upon the clutch and brakes. The clutch operated brakes may also be applied directly by a second pedal or hand lever. A casing for the mechanism is formed by a cylindrical extension a<1> of the gear box a and a part a<2> bolted thereto. A shaft b geared at b<6>, b<7> to a shaft which is always rotating when the vehicle is moving carries a drum b<2> with which friction discs b<8> of a friction clutch are in sliding engagement. The other discs of the clutch engage a hollow shaft c. A member f for pressing the discs together is carried by a rod f<3> that slides in a squared bearing f<6> in the shaft c and has a nut f<9> engaged by a cap f<7> slidable on the shaft c. A returning spring f<5> abuts against a shoulder on the shaft c and a washer f<1> slidable in this shaft and secured to the rod f<2>. The boss of an arm e<5> connected to an operating pedal lever has internal serrations of spiral form for engagement with corresponding serrations on a bush e freely mounted upon the shaft c. An arm e<3> secured to the bush e is connected to the brakes on the front wheels. The boss of an arm d connected to the brakes on the rear wheels is mounted upon the shaft c so that it may turn to a limited extent independently of this shaft. When the arm e<5> is actuated the bush e and arm e<3> at first turn therewith until the front wheel brakes are applied; further turning movement of the arm e<5> causes it to slide to the right on the bush e by the action of the spiral serrations e<6> thereby also sliding the cap f<7>, rod f<3> and presser member f to effect engagement of the clutch discs and the application of the rear wheel brakes by the shaft c and arm d. To ensure the operation of the rear wheel brakes in the event of failure of the connections to the front wheel brakes, a stop g is provided on the casing a<2> for the arm e<3>. Interengaging dogs c<8> on the fixed part c<1> and the plate c' keyed on the shaft c limit the turning movement of this shaft in both directions. To allow of direct application of the rear wheel brakes as may be necessary for instance during backward movement of the vehicle when the clutch device is ineffective the arm d is adapted, by reason of the lost motion device referred to above, to be actuated independently of the shaft c by the engagement with the bolt d<5> on this arm of a double-armed member d<6> connected to a separate hand-lever. The clutch device may be arranged to operate the brakes on the front wheel instead of those on the rear wheels. Specification 222,418 is referred to.