baber/WOPTO huggingface dataset:
Patent GB-1507985-A (GB)
Title: Measurement of non-linear distortion in signal transmission circuits
IPC: G01R23/20
Filed: 1975-06-16
Abstract: 1507985 Measuring non-linear distortion BRITISH BROADCASTING CORP 16 June 1975 [14 June 1974] 26530/74 Heading G1U In measuring the distortion introduced by a system under test 12 e.g. an audio signal channel, a test signal is applied to it, comprising a plurality of regularly spaced frequency components which are not integral multiples of a base frequency, and the output of the system 12 is analyzed to determine the magnitude of the frequency components other than those in the test signal. The test signal is produced by generating 16 a pseudo-random binary sequence using a clocked shift register of m stages, which produces an output containing frequency components harmonically related to the clock frequency divided by 2m-1. A low pass filter establishes the test bandwidth and each frequency component is shifted by an equal amount w s  using a single-sideband modulator (20) Fig. 2 (not shown). In the analyser 14, the system 12 output is shifted by an opposite amount -w s  and applied to a comb filter 26 to remove the test signal components. A weighting network 28 may be provided to equalize the meter 30 indication with subjective test results. In a modification Fig.5 (not shown), the base frequency in the test signal is detected and used to control the frequency shifter 24 to provide the correct value of w c , and also to provide a clock signal to a delay unit in the comb filter Fig.3 (not shown) ensuring the "teeth" of the filter lie precisely on the test signal frequency components. To measure distortion components lying above the test band (Group 1 distortion), the output from the system under test is applied to a high pass filter (72) Fig.6 (not shown), a multiplier (74) squaring its input, a low-pass filter (for calibration control) and a standard peak programme meter (78, 80).
Patent GB-519034-A (GB)
Title: Improvements in and relating to operating gear for windows, fanlights and the like
IPC: E05F11/12
Filed: 1938-09-13
Abstract: 519,034. Actuating Bowden &c. mechanism. ILLINGWORTH, H., and STANDARD PATENT GLAZING CO., Ltd. Sept. 13, 1938, No. 26642. [Class 136 (i)] [Also in Groups X and XXIV] Operating-gear, particularly for windows and fanlights, comprises a sleeve T connected. 'directly or otherwise, to the window &c. and normally locked in adjusted position along a fixed rod R by the frictional grip thereon of the eyeletted lids L1 of a pair of levers L. The levers are fulcrummed in a stirrup F which is slidable on the rod R and has one lid F' connected to the tube T. Springs S fitted between the lids F<1> F<2> of the stirrup and the inner lids L<1> of the levers normally hold the latter rocked so as to grip the rod. Figs. 6 and 7 show the device applied to a casement window D<3>, and a brake-operating cable &c. G, respectively. As shown, the gear is enclosed by a rotary casing C which is slotted for the passage of the stirrup and levers.
Patent GB-1240115-A (GB)
Title: Improvements relating to the dealkylation of alkyl aromatics
Inventor: OLIVE MARTIN FREDERICK
IPC: B01J29/18
Filed: 1968-06-05
Abstract: 1,240,115. Selective dealkylation. BRITISH PETROLEUM CO. Ltd. 14 April, 1969 [5 June, 1968], No. 26704/68. Heading C5E. Mixtures of alkyl aromatics having 8 or more carbon atoms and containing both methyl and higher alkyl groups are dealkylated at 350- 650‹ C. and 50-1500 p.s.i.g. in the presence of hydrogen and a catalyst comprising both a hydrogenating component and an alkali metal cation deficient mordenite (i.e. less than 3 wt. per cent alkali metal), to effect selective dealkylation of those alkyl aromatics containing ethyl or higher groups. The feed may comprise alkyl benzenes or alkyl naphthalenes, preferably all C 8  or all C 9  alkyl benzenes. The mordenite is preferably in the hydrogen form, but may contain Ca, Mg or rare earth ions. The hydrogenating component is suitably Co, Ni, Pt, Pd or Ag, preferably added to the mordenite by ion-exchange. The process is particularly valuable for recovering trimethyl benzenes from mixtures with other C 9  aromatics, and this is illustrated in the example.
Patent GB-431747-A (GB)
Title: Improvements in and relating to welding apparatus
IPC: B23K9/028
Filed: 1934-09-18
Abstract: 431,747. Uniting by fusion. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 18, 1934, No. 26804. Convention date, Sept. 19, 1933. [Class 83 (iv)] A welding nozzle 21 having an axial bore for the passage of the electrode 21<a> is traversed along a seam of the work 11 by wheels 20, 31 which travel along the track 12, the wheel 20 being journalled on the welding tool and rotated by worm 24. The track 12 is spaced away from the seam a distance equal to the radius of the guide wheel 20, which is held against the track by a spring urged roller 31 or of an electromagnet as in Fig. 4 in which 43 is the track, and 44 the magnet winding of the magnetic guide wheel 42. The welding head 13 is mounted on a carriage 14 traversable along a frame 15 which can be swung around a pillar 16 and can be raised or lowered thereon by cable and weight. Specification 430,133 is referred to.
Patent GB-1318396-A (GB)
Title: Dispersion of a finely-divided luminescent material in an apolar dispersing agent
IPC: C25D13/00
Filed: 1970-06-03
Abstract: 1318396 Electro-phoretic deposition luminescent materials PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 3 June 1970 [6 June 1969] 26827/70 Heading C7B [Also in Divisions C4 and H1] Luminescent material, e.g. activated ZnS; ZnCd S or YVO 4  for use in the manufacture of colour television screens, is electro-deposited from a dispersion of finely divided luminescent material in an apolar dispersing agent, e.g. an isoparaffin, which also contains a non-ionic macromolecular compound soluble in the dispersing agent, e.g. poly(meth) acrylic acid ester, polyalkylstyrene, polyvinyl alkyl ether, or copolymer of polymethacrylate and a cyclic amide or fumarate, and a surface active ion-forming substance containing a multivalent metal atom such as alkaline earth metal sulphonates, fatty acid salts e.g. magnesium, barium or calcium oleates, alkyl salicylic acid salts, alkaline earth metal or aluminium salts of alkyl esters of sulphosuccinic acid, or cetyl, octyl or stearyl titanate.
Patent GB-1529134-A (GB)
Title: Optical fibre measurements
IPC: G01B7/312
Filed: 1977-06-28
Abstract: 1529134 Measuring eccentricity STANDARD TELEPHONES & CABLES Ltd 28 June 1977 26961/77 Heading G1N The eccentricity of a hole in a jewel bearing 2 Fig. 2, fitted into one end of a ferrule 1 is determined by mounting the ferrule between a fixed centre support 3 and a rotated support 4 mounted in accurate bearings 5 and coupled by a flexible sleeve 6 to the ferrule. Radial movement of the outer surface is sensed by LVDT7 and analyzed to determine eccentricity. Two diametrically opposed transducers 7 may be used and the measurements used to determine the circumferential ellipticity and the ferrule diameter.
Patent GB-401864-A (GB)
Title: Improvements in sedimentation devices
IPC: B01D21/04
Filed: 1932-10-07
Abstract: 401,864. Gravity-separation apparatus. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Dorr Co., Inc. ; 247, Park Avenue, New York, U.S.A.) Oct. 7, 1932, No. 27929. [Class 111.] Settled solids are collected by lateral displacement from the base of a rectangular or elongated settling-chamber by rakes or scrapers, adjustably suspended from a travelling carriage which reciprocates longitudinally of the cham. ber. A settling-tank, shown in plan in Fig. 1 and in vertical section in Fig. 2, has its bottom sloping from either side towards a central longitudinal sump or channel 14, into which settled solids are directed by scrapers 30, 31, suspended from a carriage 15 which is moved to-and-fro on rails on the sides of the tank by a motor 20, automatically reversed at either end of the tank. The scrapers are in pairs inclined in opposite directions to the channel 14 and supported from frames 35 so that the lower edge of each is parallel to the portion of the tank beneath it. The frames 35 are attached to members 36, 37 pivoted about a number 40 and are connected by a cable 42 passing round sheaves on a shaft 44. The shaft 44 is oscillated automatically when the carriage reaches either end of the tank, so that one pair of scrapers 30, 31, is raised and the other lowered into effective position to push the settled matter to the channel 14 as the carriage moves in the opposite direction. The sludge collecting in the channel 14 is raised through a pipe 47<1> by a pump 47 on the carriage and delivered into a tank 55 with an inclined bottom, the upper part of which serves as a drainage deck, and an overflow lip 57. Grit settles and is pushed over the drainage deck by paddles on a wheel 59 to an outlet 56', whence it is directed into a hopper 67. As the carriage reaches the end 12 of the tank, rollers on the hopper engage inclined members 71 and tilt the hopper so as to discharge the grit therein down a shoot 72. Both the pump 47 and the wheel 59 are operated from a motor 38. The ends of the tank are shaped in conformity with the scrapers so that dead spaces in which grit would collect are avoided. Fig. 5 shows modified apparatus comprising a tank with a flat floor and two sets of scrapers 79, the members of which are connected by links 82. As the carriage reaches one end of the tank the outer scrapers 79 contact with curved surfaces 83 and each set is turned so as to move the sludge to the central channel 78 as the carriage moves towards the other end of the tank.
Patent GB-888304-A (GB)
Title: Improvements in high efficiency screen
IPC: B01D29/11
Filed: 1960-08-04
Abstract: 888,304. Filters. IBIS ENTERPRISES Ltd., and BIRD MACHINE CO. Aug. 4, 1960 [Aug. 17, 1959], No. 27120/60. Class 46. A screening device includes an annular chamber formed by a pair of concentric spaced walls 12, 14, with an inlet 36 for a stream of liquid suspension adjacent one end, an outlet 56 for accepted stock, and an outlet 18 for rejected suspension from a circular trough 16, at the other end of the chamber, and a plurality of hydrofoils for cleaning the fixed cylindrical wall 22, or walls 20, 22, of the single or double screen respectively and rotated on a ring, Fig. 3 (not shown), and is characterised in that a portion of the outer wall 14 of the chamber is formed by the screen wall 22, and the chamber contains an outlet 28 for continuously withdrawing a portion of the suspension, containing the heavier particles, without it passing through the screen. A stream of liquid is introduced through a supplementary inlet 54, to dilute the suspension and facilitate the final stages of screening before the accepted stock is passed through the outlet 56.
Patent GB-359144-A (GB)
Title: Improvements in or relating to thermostatically-controlled valves
IPC: G05D23/02
Filed: 1930-09-12
Abstract: 359,144. Thermostats. B R I T I S H BRASS FITTINGS, Ltd. and SPERRYN, G. N., Moorsom Street, Birmingham. Sept. 12, 1930, No. 27215. [Class 135.] In a thermostatically - controlled valve for gas or other fluids a valve head is adjustably carried by an axial screw threaded member, of which one end is connected by a sliding universal joint to an aligned rotatable member for setting the valve and the other end has an axially arranged pin-andrecess engagement with an aligned member moved axially under thermostatic control. As shown, the valve body or casing a is provided with a gas inlet b and outlet c which are separated within the casing by an annular wall d having a ground end face forming the valve seating. A plunger u actuated by a non-expansible rod f for the thermostatic control of the valve slides in a bore g in the casing a and is provided at one end with a round-ended pin t which registers in an axial recess s in one end of a member n screwed into the valve l. The other end of the member n terminates in a ball head p through which passes a pin q which is slidable in the slotted end r of a spindle carried by and rotatable with a setting head or dial k. The spindle j passes through a gland in a closure member h screwed into the casing a. The valve consists of the disc anchored against rotation by a pin 1<1> engaging a radial slot in the disc and provided with an annular knife-edge rib m adapted to seat on the end face. A spring v abuts between the outer surface of the valve and a washer disc w.
Patent GB-1474392-A (GB)
Title: Preadjustable control device for selecting character spacing in office machines
IPC: B41J21/02
Filed: 1974-06-19
Abstract: 1474392 Typewriters WALTHER BUROMASCHINEN GmbH 19 June 1974 [19 June 1973] 27244/74 Heading B6F A stop rack for tabulation comprises a pair of parallel bars 2 interconnected by plates 3, 4, 5 and 6, and having evenly spaced projections 11 to receive program plates 12, 14, the program plates locating tab stops (22, Fig. 2, not shown) retained by a rod 25 passing through eyes 24 in the stops and through eyes 16 in interconnecting pieces 13. Projections 31 define the side margins. Tabs controlling operation of the machine may be located on the programme plates.
Patent GB-483013-A (GB)
Title: Improvements in and relating to sweeps for corn, hay or the like
IPC: A01D87/08
Filed: 1936-10-08
Abstract: 483,013. Hay &c. sweeps. BURGESS, B. Oct. 8, 1936, No. 27340. [Class 6 (iii)] A sweep adapted to be pushed in front of a vehicle comprises a main frame 1 carrying forwardly projecting tines 3 and at each end being provided with a triangular frame 2: a beam 4 extending under the tines 3 is bent forwardly and upwardly at its ends which are supported by castor wheels 7. Braces 8 extend from the ends of the beam to the apices of the triangular frames. A further triangular frame or pair of such frames 12 is secured to the pane 1 near the middle thereof and is coupled by push rods 10 to the frame of the propelling vehicle. A link or pair of links 15 extends from these frames to a hand lever 16 by which the tines may be lifted.
Patent GB-976157-A (GB)
Title: Closure and retaining panels
IPC: B60P1/28
Filed: 1962-07-17
Abstract: 976,157. Laminates. WALNUT INDUSTRIES Inc. July 17, 1962 [Aug. 25, 1961; Dec. 19, 1961; March 5, 1962; May 7, 1962], No.2 7349/62. Heading B5N. [Also in Divisions B7 and B8] A retaining panel comprises a core 21 of corrugated paper with a flat paper facing 22 bonded to the corrugation crests and at least one flexible tape 23 extending along its length sandwiched between and bonded to the core and the facing, the facing having windows 24, or means for providing windows e.g. perforated portions for tearing out, to expose parts of the tape and render it accessible. The tape may be a weftless cord tape and may be glued in position or, if the cords are bonded together by heat-sealable composition then the tape may be heat-sealed to the panel, alternatively tapes may be woven fabric, or woven or unwoven tapes of plastic or metal. A further flat facing paper may be applied to the rear surface of the corrugated paper. Preferably the rear surface of the panel is marked to indicate the position of the tape(s) or, where there is no rear facing paper, the tape may slightly break through the corrugations to which it is affixed to expose its position. The facing paper may be scored along each side of the length of the tape(s) to permit the tape to be pulled away from the corrugated core for any desired length. Double-faced panelling may be scored transversely at intervals and folded concertina-wise for storage or transport instead of being rolled. The window slots may be punched out as the paper sheets are being fed from the rolls to form the composite panelling. The panels may be used for packaging wraps, or may be folded along scored lines and made up into boxes, the tapes being appropriately placed to provide fastening bands when the folded box shape is completed (Figs. 15-26, not shown). Alternatively the panels may be used as retaining panels for closing railcar or other storage space doorways (Figs. 10-14, not shown) by being stretched loosely across the doorway, stapled or glued to the door posts and then cut down the centre, the cut edges being subsequently joined, when loading is completed, by joining the opposed ends of the tapes which are pulled away from the panel sufficiently for this to be done, the free ends of the panels being placed behind one another. A further form of panel for use as a grain door (Figs. 27 to 34, not shown) is scored lengthwise to provide a grain-retaining flap and has tapes spaced to provide greater reinforcement in the lower sections of the panel. A simpler form (Figs. 35 and 36, not shown) may be used as a closure door for railway trucks.
Patent GB-1443259-A (GB)
Title: Signal transfer devices
IPC: H01L21/8234
Filed: 1974-06-20
Abstract: 1443259 Semi-conductor devices WESTERN ELECTRIC CO Inc 20 June 1974 [25 June 1973] 27353/74 Heading H1 [Also in Division H3] A signal transfer device includes a first section 10 having a plurality of signal transfer stages, and a second section having at least two transfer stages, one of which has a coefficient of incomplete transfer, defined in the Specification, of the order of the sum of coefficient of incomplete transfer of the transfer stages preceding said one stage. The required near-equality in the said coefficients is achieved by making the electrode e N+4  of the one stage longer than the other electrodes e 0 -e N+3 , the said coefficient being proportional to the square of the length of the electrode. Two charge sensors Q 1 , Q 2  for the two stages preceding said one stage, a difference amplifier 23 and a utilization detector 24 compensate for incomplete signal transfer. The quantity Q 1 -Q 2 , when measured during a specified time interval, represents the corrected signal. The device may be used with CCDs or BBDs, with analog or digital signals, and with two-phase or three-phase clock pulses.
Patent GB-270965-A (GB)
Title: Improvements in or relating to screens for straw-separators of threshing machines
IPC: A01F12/34
Filed: 1926-11-01
Abstract: 270,965. Graepel, F. November 1, 1926. Sieves and screen s, forms and construction of; reciprocating sieves.- A straw separating screen is composed of sheet metal and has tongues c formed by making angular cuts in the sheet and bending up the pointed strips. The edges of the tongues impart the forward movement to the straw, the plane of the tongues being the plane of the vibratory movement of the screen or acutely inclined thereto. Holes are arranged in the screen between the tongues. Specification 20408/02 is referred to.
Patent GB-1163207-A (GB)
Title: Content Addressable Memory with Means for Masking Stored Information
IPC: G11C15/04
Filed: 1967-06-14
Abstract: 1,163,207. Associative stores; masking. BUNKER RAMO CORP. 14 June, 1967 [20 June, 1966], No. 27436/67. Heading G4C. A content addressable memory system storing a plurality of multibit words is provided with means for masking selected stored word bits. As shown, a content addressable memory comprises a plurality of memory elements 10 arranged in rows and columns, the rows 12 of which can store eleven bit words, an eleven bit search register 16, the contents of which may be compared column by column with the bits of the stored words and a bi-stable element 32 connected to each row conductor 12, whereby mismatch signals on the row conductors may be detected and stored. The stored words are each divided into a number of fields, the initial bit of each field normally being in a zero state but being set to a one state if the associated field is to be masked. Coupling means 30 including a bi-stable element 36 in each row conductor are provided between the elements 32 and the row conductors 12 to inhibit mismatch signals corresponding to fields to be masked. In synchronism with the comparing of each initial bit, a timed pulse resets each element 36 and, after a delay provided by delay devices 34, those elements 36 corresponding to fields to be masked (initial bit = 1) are set, the resulting signal through A.C. coupling capacitors 38 being inhibited by the simultaneous closing of gates 40. The elements 36 corresponding to fields to be masked remain reset until the next initial bit, thereby inhibiting any further mismatch signals on the corresponding lines 12.
Patent GB-242086-A (GB)
Title: Improvements in or relating to hair slides
IPC: A45D8/24
Filed: 1924-11-17
Abstract: 242,086. Braun, L. Nov. 17, 1924. Combs, hair; hair slides.-A hair slide 1 is provided on its inner side with a pocket 2 in which is carried a detachable comb 3 ornamented at 6 and formed with shoulders 7. Alternatively, the comb may be attached to the slide by clips or the like.
Patent GB-665068-A (GB)
Title: Improved safety tube for a pneumatic tyre
IPC: B60C5/20
Filed: 1949-10-27
Abstract: 665,068. Pneumatic tyres. DUNLOP RUBBER CO., Ltd., and HARDEMAN, W. E. Sept. 15, 1950 [Oct. 27, 1949], No. 27542/49. Class 144 (ii). A dual-chamber pneumatic tyre comprises an inner reinforced air-tube 3 and an outer tube 4 bonded together at the rim-seating base-portion 5 through which a single inflation-valve 6 extends into the inner tube 3, communication between the tubes being effected through a nipple 7 embedded in a rubber band 12 having passages 11, the outer ends of which open into the air-chamber 4. The valve 6 and nipple 7 are circumferentially spaced.
Patent GB-1136950-A (GB)
Title: 1,2,4-dithiazolidines
Inventor: ZUMACH GERHARD
IPC: C07D285/01
Filed: 1966-06-21
Abstract: 1,136,950. 3,5 - Dioxo 1,2,4 - dithiazolidines. FARBENFABRIKEN BAYER A.G. 21 June, 1966 [23 June, 1965], No. 27647/66. Addition to 1,136,737. Heading C2C. Compounds of the same general formula as those claimed in Specification 1,136,737 are prepared by reacting a formamide RNH.CHO with at least twice its molar quantity of chlorocarbonyl sulphene chloride Cl.CO.SCl. In this case R is preferably an alkyl radical of 1 to 20 carbon atoms, an alkenyl radical of 3 to 5 carbon atoms, a cycloalkyl radical of 5 to 8 ring atoms, a phenyl or a naphthyl radical, or a heterocyclic system with 5 to 7 ring members and 1 to 3 heteroatoms. The reaction is preferably carried out in a relatively inert solvent at 0 to 100 C., more preferably 20 to 40 C.
Patent GB-789250-A (GB)
Title: Improvements in frames for motorcycles, autocycles or motor scooters
IPC: B62J35/00
Filed: 1955-09-29
Abstract: 789,250. Motor-cycle frames. AUFIDA AKT.-GES. Sept. 29, 1955 [March 26, 1955], No. 27720/55. Class 136(3) [Also in Group XXIX] A motor-cycle frame comprises a hollow portion containing a removable fuel tank of flexible material, means being provided to secure the tank to the frame and to permit removal of the tank from the hollow portion and replacement thereof. As shown in Fig. 1, the petrol tank is formed by a bag 2 of flexible synthetic material such as polyvinyl chloride or synthetic rubber. The bag has a filling flange 3, Fig. 3, engaging over the filling opening 1c of the motor vehicle frame part 1. A sealing edge 3a of the flange 3 is pressed on to the edge of the opening 1c by means of an enclosing nut 4. In a modification shown in Fig. 5 a screwed-on cover part 14 is provided on the saddle part 12 of the motor vehicle frame. A less flexible petrol tank 15 may be inserted through the opening in the frame.
Patent GB-216443-A (GB)
Title: Improvements in or relating to dazzle preventing spectacles or the like
IPC: G02C7/10
Filed: 1923-11-05
Abstract: 216,443. Busch, J. P. H., and Busch, C. V. F. Nov. 5, 1923. Goggles.- Dazzle preventing goggles of the kind embodying a screen located in use above the normal line of vision and brought into use by a downward tilting of the wearer's head, consist entirely of protective screens and their supports and have no clear glass zones or apertures. In the example shown in Fig. 1, screens mounted as ordinary pincenez have the lower field or zone cut away so as normally to provide clear vision, but on inclining the head to constitute anti-dazzle screens. In a modification in the dazzle preventing screen is in one piece with a plate which replaces the ordinary spectacle frame. The screens may be shaped to function as sight-correcting lenses.