baber/WOPTO huggingface dataset:
Patent GB-1422092-A (GB)
Title: Wave-guide filters
IPC: H01P1/209
Filed: 1973-08-11
Abstract: 1422092 Filters for waveguides MARCONI CO Ltd 9 Aug 1974 [11 Aug 1973] 38141/73 Heading H1W A low-pass microwave filter comprises a rectangular waveguide coupled by slots in one or both broad walls to a parallel-plate waveguide or waveguides associated with absorptive material. In the simplest form (Fig. 1, not shown), one broad wall is provided with an array of slots spaced at intervals equal to one halfwavelength of the TE 01  mode in the parallel plate waveguide at the frequency above which attenuation is desired, the length of each slot being about one half-wavelength at this frequency. A substantial proportion of the energy propagating in any TE MN  mode (M#0) is radiated by the slots. In the embodiment shown, slots are provided in both broad walls resonant at harmonic frequencies, the slots 12 in the upper wall being arranged in pairs to transmit the even harmonics, and those 13 in the lower wall being arranged in groups of three to transmit the odd harmonics. The two arrays may be staggered by one quarter-wavelength to improve the VSWR. A further improvement may be obtained by a diminution of the lengths of the slots towards the two ends of the filter. The parallel-plate guides comprise two pairs of spaced conductive plates 5. The guides include elements 7 made of absorptive material, e.g. silicone rubber loaded with ferrite or a ceramic load with carbonyl iron or ferrite. The embodiment shown comprises additionally means for attenuating the TE MN  (M, N#0) modes, in particular the TE ON  modes not affected by the slots 12, 13. For this purpose, each narrow wall is provided with slits 14 parallel to the minor axis, each slit being of width about equal to the thickness of the wall and spaced from the next by two slit-widths. The slits are covered by absorptive material 15, e.g. ferrite-loaded silicone rubber.
Patent GB-344862-A (GB)
Title: Improvements in apparatus for the generation of electric high voltage impulses
IPC: H03K3/537
Filed: 1929-12-12
Abstract: 344,862. Charging and discharging condensers. GOODLET, B. L., Ambleside, Spennithorn Road, Urmston, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London. Dec. 12, 1929, No. 38152. [Class 38 (iv).] Apparatus for generating high-voltage impulses comprises several stages each consisting of a sparkgap, resistance and condenser in series, the terminals of each stage being connected together and to the next stage through a linking resistance, while the first stage is so connected to the supply that the latter is short-circuited through a spark-gap when the apparatus discharges. In the arrangement shown, high-voltage alternating current from transformer T is rectified at G and charges up condensers C1 .. 4 in parallel, Cg being a smoothing condenser. The resistances W1 . W8 are such that when the spark-gaps break down the condensers discharge in series, thus applying highvoltage impulses at O to an insulator I which is to be tested. The spark-gaps are set to break down successively starting with F1 which short-circuits rectifier G. Stabilizing-condensers Cs are shunted across each gap to maintain the gap conditions independent of the impedance of the output circuit.
Patent GB-846161-A (GB)
Title: Vertically adjustable supports
Inventor: DOWNIE ALFRED ALEXANDER
IPC: B66F7/08
Filed: 1957-12-09
Abstract: 846,161. Platform elevators; lift trucks. TIPTON WELDED FABRICATIONS Ltd. Nov. 24, 1958 [Dec. 9, 1957], No. 38164/57. Class 78 (3). [Also in Group XXIII] Apparatus for supporting a stack of workpieces comprises a platform 6 supported on a base 4 by levers 5, 9 pivoted together and each being pivoted at one end to the platform or base and at the other end being slidably connected to the base or platform respectively. The platform is raised by extending an hydraulic ram 16, 17, the cylinder 17 being pivoted to the base and the piston 16 supporting a cross-member 14 on which are mounted rollers 15, 15a which engage cam surfaces 12, 13a on the levers 5 and the base 4 respectively. A motor-driven pump 19 for supplying fluid to the ram is controlled by a foot-pedal 20. Lift trucks.-The base is provided with rollers 21, and a bracket 22 for engagement by a wheeled carriage.
Patent GB-344541-A (GB)
Title: Improvements in and relating to railway trucks or wagons
IPC: B61F5/48
Filed: 1929-12-13
Abstract: 344,541. Cranes. CRAVEN BROS. (MANCHESTER), Ltd. and HORROCKS, A. E., Vauxhall Works, Reddish, Lancashire. Dec. 13, 1929, No. 38222. [Class 78 (iv).] In a railway break-down crane wagon, of the kind in which auxiliary bogies having an articulated connection with the crane undercarriage are adapted to relieve the latter of part of its load, the connecting means between each of the end bodies and the crane undercarriage comprises a bracket a carried bv the bogie and designed for ready attachment to or detachment from the crane undercarriage by means of a single coupling-pin h, the stresses arising from the upward thrust on the bracket a when a portion of the weight of the load is being transferred to the bogie being taken partly by the pin h and partly by a thrust block a<2> on the crane undercarriage receiving a radiused projection a<1> on the bracket a. In the construction shown in Fig. 1 the upward or lifting effort on the arm a is derived from a worm gear c and vertically moving screw shaft b mounted on the bogie floor, the shaft b being coupled through a pair of links d having slotted ends to trunnion pins e on the bracket a. In a modification, Fig. 2, the load distributing gear is disposed below the floor and comprises a thrust block q that bears against a convex head u on the underside of the arm a and is raised or lowered by pairs of toggle links n, Fig. 4, actuated by a transverse screw shaft o. Hinged centralizing links s having slotted ends engaging pins on the block q depend from the bracket a. The removable pin h, which passes through apertured lugs g on the bracket a and through a rotatable apertured crosshead i on the crane undercarriage, may operate in a housing h<1>, Fig. 5, and be locked in securing position by a bolt h<4> on the end of a hinged arm h3. When released from the crane undercarriage the bracket a is adapted to be suspended from the bogie by chains m, thus facilitating its manipulation in effecting a re-coupling.
Patent GB-1437622-A (GB)
Title: Catheter insertion device
IPC: A61M25/06
Filed: 1973-06-14
Abstract: 1437622 Catheter insertion device TRAVENOL LABORATORIES Inc 14 June 1973 [21 June 1972] 38227/75 Divided out of 1437621 Heading A5R A catheter insertion device comprises a longitudinally slotted insertion needle 12 having a hub 22, and a catheter 14 for location within the needle and having a hub 36, means being provided on the hubs for preventing accidental relative longitudinal movement between the needle and catheter during insertion, the needle and catheter being separated after insertion by applying lateral separating pressure. The hub 22 is provided with lugs 32 which engage a flange 48 of catheter hub 36 to prevent rearward movement, and shoulders 30 which engage shoulder 46 on hub 36 to prevent forward movement. The catheter 14 may be formed with an enlarged tapered portion or a cylindrical portion to seal the puncture made by the needle whereby flow of blood round the catheter after withdrawal of the needle is prevented. The needle hub may have a pair of laterally extending arms terminating in upstanding ears which may be grasped during forwarding movement of the catheter on removal of the needle. A luer plug 14 at the end of the catheter may carry a stylet.
Patent GB-924653-A (GB)
Title: Fungicidal compositions
IPC: A01N51/00
Filed: 1961-10-25
Abstract: Fungicidal mixtures contain pentachloronitrobenzene or tetramethyl thiuram disulphide, together with p-dimethylamino-phenyl diazo-sulphonic acid or a metallic salt thereof, quinone-oxime-benzoyl-hydrazone or a metallic salt thereof, p - dimethylamino - phenylhydrazine-sulphonic acid or a metallic salt thereof, p-amino-benzene-azo-sulphonic acid or a metallic salt thereof, p-amino-phenyl hydrazine-sulphonic acid or a metallic salt thereof or p-acetylamino azo benzene-sulphonic acid or a metallic salt thereof.  The mixtures may contain carriers, dressing agents, fungicides, insecticides, nematocides, agents for improving soil structure or fertilizers and maybe in the form of dusts, sprays, granulates, powders, pastes, suspensions, emulsions or solutions.
Patent GB-1011713-A (GB)
Title: Bladed turbine or compressor rotors
IPC: F01D5/30
Filed: 1964-09-21
Abstract: 1,011,713. Cotters. GENERAL MOTORS CORPORATION. Sept. 21, 1964 [Sept. 26, 1963], No. 38511/64. Heading F2H. [Also in Division F1] A turbine or compressor blade 8 is locked in an axially extending serrated slot 6 in the rotor periphery 4 by a metal key 20 having a stem 22 fitting in a notch 18 in the blade and a base 24 engaging a circumferential groove 14 in the rotor. The key is held in position by serrations 26, 28 engaging the serrated root 12 of the adjacent blade. The key may be a sheet metal stamping or an extrusion.
Patent GB-1194604-A (GB)
Title: Substituted Cyclobutanones and Process for Their Production
IPC: A01N57/12
Filed: 1967-11-20
Abstract: 1,194,604. α-Halogen cyclobutanone derivatives. AGRIPAT S.A. 20 Nov., 1967 [21 Nov., 1966], No. 38775/68. Divided out of 1,194,603. Heading C2C. The invention comprises α-halogen cyclobutanones of formula in which Hal is halogen of atomic no. at most 35, R is H, halogen of atomic no. at most 35, C 1 -C 5  alkyl, phenyl or phenyl substituted by halogen of atomic no. at most 35 or by C 1 -C 5  alkyl, and A is a saturated or unsaturated 4-6 membered aliphatic bridge and which may contain an oxygen atom as an interrupting chain member or is the o-phenylenemethylene radical. The bridge A may be substituted by halogen of atomic no. at most 35, -OH, epoxy, alkoxycarbonylthio, alkoxythiocarbonylthio, or phenylthio which may be substituted by halogen of atomic no. at most 35, C 1 -C 5  alkyl or nitro groups. The compounds are prepared by reacting an olefin of general formula with a halogen ketene at - 10 to + 160 C. A precursor of the ketene may be used, e.g. an α-halogen acyl halide in the presence of a tertiary organic base and a solvent. Equimolar amounts of ketene and olefin may be used or one of them may be present in up to ten times excess.
Patent GB-1400582-A (GB)
Title: Harp construction
IPC: G10D1/04
Filed: 1972-08-21
Abstract: 1400582 Harps LYON & HEALY Inc 21 Aug 1972 [24 Aug 1971] 38849/72 Heading G5J Harp strings are raised in pitch from flat to natural or sharp by lever mechanisms fixed to the neck. To produce a natural, lever 171 is raised and a cam surface 172 moves to a justpast-dead-centre position to push the string 21 into a notch in fret 160. A similar lever 71 and fret 60 produce a sharp. The notches have apices parallel to the final direction of the string 21 to provide good seating. Stops, such as 75 and 76 limit the travel of the levers. To allow for changes in overall string length, the fret positions can be adjusted by loosening a bolt 44 and sliding the units 31 and 32.
Patent GB-1506697-A (GB)
Title: Peristaltic pump
IPC: F04B43/12
Filed: 1976-09-20
Abstract: 1506697 Peristaltic fluid-machines BAXTER TRAVENOL LABORATORIES Inc 20 Sept 1976 [25 Sept 1975] 38858/76 Heading F1U A pump that can be used for pumping blood has rigid rollers 17 to compress a pumping tube 12 abutting a wall, or "race", 11, the rollers being supported by elastomeric bushings 60, 61 so that while revolving on spindles 18 secured to arms 14 on a rotary shaft 13 they can be deflected radially relative to the spindles and thus obviate damage to the fluid in the tube so that the effective lengths of the arms can be varied the arms may have oversized holes therein for clamping screws 15, Fig. 2 (not shown). The tube may be held by clamps 25, which can accommodate a pair of tubes. To keep the tube(s) on the race guiding rollers 40 may be provided on the leading sides of the main rollers 17. The tube(s) may be coated externally with P.T.F.E. to reduce friction.
Patent GB-1454182-A (GB)
Title: Apparatus for moulding articles with different weights per unit area or different thicknesses for different areas of the article process for the p
IPC: D21J7/00
Filed: 1974-09-06
Abstract: 1454182 Moulding articles from pulp DIAMOND INTERNATIONAL CORP 6 Sept 1974 [23 May 1974] 39037/74 Heading B5A A series of moulding dies 42 on a rotary cylindrical assembly 10 are fed through a tank of pulp and subjected to a vacuum such that different sections of each die are subject to vacuum of varying magnitude for varying times whereby a varying thickness of pulp is built up on each die. The assembly 10, Fig. 3, includes bearing units 32 on each of which is pivotably mounted a platen 36 carrying three dies 43; as shown, there are two axially spaced sets of eight bearing units and platens on opposite sides of a partition 26. Each platen pivots about a hollow shaft 38, Fig. 1B, and is rocked by an arm 44 having a cam follower 48 engaging a fixed cam groove 52. During its movement through the pulp tank each platen is kept substantially horizontal, and vacuum is applied to the platen and to its dies via conduit 86, Fig. 1A, an opening 24 in the rotary assembly which co-operates with a port 92 in a fixed unit 84 at each end of the assembly, passages 28, shaft 38 and a distributer plate 54, Fig. 5. The plate has three openings 56, 58 and 60 for each die, the opening 56 being controlled by a slide valve 62 operated by a rod 64 moved by an adjustable cam (74), Fig. 9, not shown, at the side of the tank to open the valve and by a fixed cam (80) to close the valve. Cam (74) is adjustable by a crank whereby the time during which the valve 62 is open is variable. After each die leaves the tank vacuum is still applied to drain moisture until the opening 23 is blanked off and the vacuum vented through the valve 98; the opening 24 then registers with the port 96 and pressure air is supplied from line 90 to transfer the article, e.g. an egg carton to a drying die.
Patent GB-974725-A (GB)
Title: Improvements in nuclear reactors
IPC: G21C5/16
Filed: 1963-10-07
Abstract: 974,725. Reactors. UNITED STATES ATOMIC ENERGY COMMISSION. Oct. 7, 1963 [Dec. 26, 1962], No. 39344/63. Drawings to Specification. Heading G6C. A source of thermal reactors is provided, for experimental purposes, by a channel in the reflector of a nuclear reactor. The closed end of a tube is inserted into the channel to enclose a recess between the ends of the tube and channel. The recess is connected to the coolant passages in the reflector through which light water passes. An increase of 30% in the reactor flux within the tube is said to be produced with a water layer of 4. 5 cm and a beryllium layer of 2. 5 cm. Specification 974,726 is referred to.
Patent GB-1437399-A (GB)
Title: Expansible picture frame assembly
IPC: B44D3/18
Filed: 1973-08-15
Abstract: 1437399 Expansible frame G NICOLA 15 Aug 1973 [25 Aug 1972] 39579/73 Heading B6P [Also in Division F2] An expansible frame for stretching canvas includes strips 1, 2, (Fig. 3), which have at each end two cavities for reciving an L-shaped corner elements 22, 23 whose arms are slidable along the cavities. A nut 17 is provided to adjust the position of the arms in the cavities. Recesses 18 are for engagement by a tool (not shown) to effect rotation of the nut 17. In another embodiment, Fig. 2, the adjustment of the strips 1, 2 is by means of wedges 9, 10 mounted on a threaded shank 11 being drawn together by a nut 15. The strips are held together by corner elements 7, 8.
Patent GB-1382889-A (GB)
Title: Chlorine-containing catalysts
IPC: C10G35/09
Filed: 1972-08-25
Abstract: 1382889 Regulating the chlorine content of hydrocarbon conversion catalysts COMPAGNIE FRANCAISE DE RAFFINAGE 25 Aug 1972 [26 Aug 1971] 39801/72 Heading B1E [Also in Division C5] The chlorine content of hydrocarbon conversion catalysts which have been prepared by impregnating an alumina-containing support with at least one solution containing the chlorine element and at least one other element to be deposited on the support, is controlled by calcination followed by washing with liquid water and drying. The other element is preferably a Group V-VIII metal having hydrocarbon conversion activity and germanium or tin may be used as promoters.
Patent GB-884664-A (GB)
Title: Continuous process for synthesis of aldehydes by the oxoreaction
IPC: C07C27/22
Filed: 1959-11-25
Abstract: Aldehydes are continuously produced by the oxo reaction by dissolving or dispersing a cobalt compound in an organic solvent, introducing the solution or dispersion thus obtained together with carbon monoxide and hydrogen at elevated temperature and pressure into a reaction vessel in which thorough mixing is performed (to form a compound containing cobalt combined with carbon monoxide and hydrogen and to reduce the free oxygen content of the gases), and then introducing the resulting solution and an organic compound having an olefinic double bond with or without additional solvent together with the treated carbon monoxide and hydrogen into a long tube-type reaction vessel at a temperature of up to 150 DEG C., preferably 125 DEG C.-135 DEG C., and under superatmospheric pressure.  The preferred pressure range for carrying out the oxo step is 50-300 atmospheres.  Suitable cobalt compounds for use in the first step are the oxide, hydroxide, carbonate, stearate, oleate, palmitate, naphthenate and other higher organic acid salts, and complex organic compounds of cobalt.  The preferred compounds are the oxide, hydroxide and carbonate.  Suitable solvents are, for example, toluene, hexane, cyclohexanone, methanol, ethanol, isopropanol, acetone, ethers and esters.  If additional solvent is used in the oxo-step it may be the same solvent as is used for the catalyst formation.  In the examples (a) acrylonitrile is converted to b -cyanopropionaldehyde and (b) hexenes are converted to C7 aldehydes.
Patent GB-1470204-A (GB)
Title: Cam-controlled machine tools
IPC: G05B19/06
Filed: 1974-09-13
Abstract: 1470204 Automatic control systems MASCHINENFABRIK HEID AG 13 Sept 1974 [13 Sept 1973] 40103/74 Heading G3N In a cam controlled machine tool e.g. a lathe, pulses are produced in response to rotation of the machine feed and passed through a gate, to a comparator, according to the movement of a tool of the machine as measured by cam switches. These pulses are compared with a desired value as set on decade switches, and the movement of the machine tool slide is stopped when they are equal. As shown, cam switches 9, 11 are driven by the tool longitudinal and cross feed mechanisms, and tachometer 12, 13 driven by the tool feed rod 7. At a pre-set position of the tool i.e. of switches 9, 11, gate 15 is opened to allow tachometer pulse to comparator 16. When the sum of these pulses reaches a value set on decade switches 17, an electromagnetic clutch 20 is opened to stop the tool advance. Switches 17 are set according to a trial run, and may be reset so as to compensate for tool wear.
Patent GB-1324290-A (GB)
Title: Driving or idler drum for article feeding belt
IPC: B65G15/42
Filed: 1971-08-27
Abstract: 1324290 Article feeding apparatus STOLLE CORP 27 Aug 1971 [29 Oct 1970] 40317/71 Heading B8A Apparatus for intermittently feeding a series of articles in succession to a plurality of operating stations comprises a non-stretch belt 10 having a series of equally spaced articlereceiving apertures 11 of a shape to fit the articles (e.g. beverage cans) and a drum 12 about which the belt passes the drum having on its periphery a plurality of equally spaced dividing plugs 15 of a thickness at least equal to the thickness of the belt, and snugly fitting into the apertures, the edges of the plugs being profiled to enter and leave the apertures without interference, at least one plug being in full engagement with a belt aperture at all times. Two drums are used in the preferred embodiment, an intermittently driven drum and an idle drum.
Patent GB-1215418-A (GB)
Title: Two-circuit master cylinder for hydraulically operated vehicle brakes
IPC: B60T11/20
Filed: 1969-08-13
Abstract: 1,215,418. Brake matter cylinders. ALFRED TEVES G.m.b.H. 13 Aug., 1969 [16 Aug., 1968], No. 40560/69. Heading F2F. A two-circuit matter cylinder for hydraulilically operated vehicle brakes comprises two cylinder bores parallel to one another and a beam 7 or 25 for operating pistons 3, 4 or 21, 22 in the bores by means of tappets 5, 6 or 23, 24 the beam having stops 10 which are brought into contact with stop faces 40 of the cylinder or stop faces 35, 36 which contact a surface 37 on a thrust piece 26 (Fig. 6) to limit tilting movements of the beam when one brake circuit is defective.
Patent GB-1519859-A (GB)
Title: Process and apparatus for the electrolytic coating of aluminium wire
IPC: C25D5/44
Filed: 1975-10-03
Abstract: The aluminium wire is degreased, pickled and sheathed electrolytically with metal. Sheathing is carried out under conditions of air exclusion, the drawing dies of the drawing stages separating the various baths from one another.
Patent GB-1020920-A (GB)
Title: Sensitization of photographic silver halide emulsions
IPC: G03C1/09
Filed: 1962-10-26
Abstract: 1,020,920. Photographic silver halide emulsions. EASTMAN KODAK CO. Oct. 26, 1962 [Oct. 26,1961], No. 40929/65. Divided out of 1,018,755. Heading G2C. The sensitivity of a silver halide emulsion which has been sensitized with a compound of the formula:- where R is hydrogen, alkyl or aryl and M is hydrogen or a water-soluble cation, is increased by incorporation in the emulsion of methane sulphinic acid, methane disulphinic acid, ethane sulphinic acid, benzene sulphinic acid, p-chlorobenzene sulphinic acid, p-toluene sulphinic acid, p-anisol sulphinic acid, p-acetanilide sulphinic acid, salicylic- 5-sulphinic acid, #-naphthalene sulphinic acid, cyclohexane sulphinic acid, thiophene-2-sulphinic acid or water-soluble salts thereof. Other sensitizers such as gold, ruthenium, palladium, iridium or platinum salts e.g. potassium chloroaurite, chloroaurate or aurithiocyanate or auric trichloride, colour couplers, hardeners, antifoggants and tone-modifiers may be present. The emulsion vehicle may be gelatin, polyvinyl alcohol, collagen or albumin. In Examples, gelatine silver halide emulsions are sensitized with (1) ammonium N- butyldithlocarbamate and sodium p-toluenesulphinate; (2) a gold sensitizer, ammonium N-ethyldithiocarbamate and sodium p-toluene sulphinate; and (3) ammonium N-ethyldithiocarbamate and each of sodium p-toluenesulphinate, sodium benzene sulphinate and neutralised p-acetamidobenzene sulphinic acid. The above emulsions are compared with similar emulsions in which the sulphinate salts are absent.
Patent GB-1117248-A (GB)
Title: Fluid flow regulator
IPC: F16K7/20
Filed: 1966-09-14
Abstract: 1,117,248. Valves. TEXSTEAM CORPORATION. 14 Sept., 1966 [30 Nov., 1965], No. 40997/66. Heading F2V. The disclosure is similar to that of Specification 1,035,427, excepting that the liner 18 is replaceable by a liner of another size, in order to vary the flow control opening, and the claims accordingly differ in scope. Also, the air actuator 55 carries a rod 60 which extends out of the housing 57 and indicates indirectly the compression of the closure element 25.