baber/WOPTO huggingface dataset:
Patent GB-701324-A (GB)
Title: Improvements in jet or propeller turbine engines used for aircraft propulsion
IPC: F02C9/18
Filed: 1951-01-26
Abstract: 701,324. Jet propulsion, plant. SOC. RATEAU., and ANXIONNAZ, R. Jan. 26, 1951 [March 21, 1950], No. 2097/51. Class 110 (3) A gas turbine jet propulsion engine having a multi-stage compressor and an expansion device comprising a turbine and a jet pipe has a balancing conduit connecting an intermediate stage of the compressor to an intermediate zone of the expansion device, the stage and zone being so selected that at rated load, the mass flow through the balancing conduit is negligible compared with the flow through the compressor and expansion device. In the arrangement shown in Fig. 1, a balancing conduit 4 directly connects an intermediate stage 1a of the axial flow compressor 1 to a point 5a located downstream of the turbine. The stage 1a and point 5a are so selected that at normal load, the pressure at these points are equal and there is no flow through the conduit 4. At reduced loads, air automatically flows from the compressor to the exhaust. In a modification, the turbine 3 comprises two stages and two balancing conduits are provided, one in the position shown and another connecting a higher pressure stage of the compressor to the space between the turbine stages. Non-return valves may be provided in the balancing conduits, if desired. In a further modification in a gas turbine plant driving a ducted airscrew, a balancing conduit connects an intermediate stage of the gas turbine compressor with an intermediate stage of the turbine. In a still further modification, a valve is provided in the conduit 4 and this valve is controlled by a centrifugal governor driven from the turbine shaft so that it is closed when turbine speed rises above a given value and opened when it falls below it. Specification 490,198 is referred to.
Patent GB-1212082-A (GB)
Title: Fastener for wire mesh fencing
Inventor: PARISIEN RUDOLPH EDGAR
IPC: E04H17/10
Filed: 1968-01-15
Abstract: 1,212,082. Releasable fastenings, wire mesh fencing. R. E. PARISIEN. 15 Jan., 1968, No. 2133/68. Headings E1B and E2A. [Also in Division B3] A fastener for securing wire mesh fencing 40 to a supporting post 41 comprises a helix 10 each coil of which defines a substantially semi-circular portion 38 having a substantially V-shaped portion 39 extending therefrom so that the legs of the V extend tangentially with respect to the semi-circular portion, to define a bend at the apex of the V for engaging with the wire mesh, the diameter of the semicircular portion being sufficient to receive the fence post and the dimensions of the V-shaped portion being such that the fence wire is held close to the post. As shown, the fastener is formed by drawing wire 17 from a reel 16,  over a rotating mandrel 25 having a substantially cylindrical portion 26 provided with a tapered ridge portion 30 and a flange 28 whereby each coil of the wire so wound engages the flanges and moves the preceding coil along the mandrel towards the free end thereof due to the taper of the ridge portion.
Patent GB-758540-A (GB)
Title: Improved bucky grid x-ray apparatus
Inventor: BENNETT COLIN LESLIE
IPC: G21K1/02
Filed: 1954-01-25
Abstract: 758,540. X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 6, 1955 [Jan. 25, 1954], No. 2158/54. Class 98 (1). In Bucky grid mechanism, two superimposed grids are moved in substantially parallel planes in substantially parallel directions perpendicular to the direction of the grid slats and in substantially parallel opposed directions to each other by crank mechanism connected through intermediate means to the grids. As shown, the two grids 1 are supported by rollers (not shown) and guided by rollers 9 moving in channel members 10 mounted on side members 11. A crank 2, driven through gearing by an electric motor 12, is connected by link 4 to a lever 5 pivoted at 6, the ends of lever 5 being linked to the grids. The motor may drive a cam or cams engaging lever 5 or directly engaging the grids. Alternatively, a solenoid and return spring, or a pair of solenoids, may be used for operating the apparatus.
Patent GB-886945-A (GB)
Title: Production of plastic compositions
Inventor: RICE ARTHUR GRAHAM
IPC: C08K9/06
Filed: 1960-01-21
Abstract: The milling of a polyethylene/filler composition is facilitated by the addition of a silane obtained by the condensation of one mol of a dihydric alcohol <FORM:0886945/IV (a)/1> wherein R1 and R3 are H, or alkyl or aryl groups of up to 6 carbon atoms and R2 and R4 are alkyl groups of up to 3 carbon atoms, with from one to two mols of a halogenosilane RaR1bR11cSiX4-(a+b+c) where a b and c are 0, 1, 2 or 3, (a+b+c) is 2 or 3, R, R1 and R11 are alkyl, alkenyl or aryl and X is halogen.  Specified silanes are tetramethylethylene-dioxy dimethylsilane, tetramethylethylenedioxy diethyl silane, tetramethylethylenedioxy diphenylsilane, tetramethylethylenedtioxy methyl-phenyl-silane, pinacol monotrimethylsilyl ether, pinacol bis-trimethylsilyl ether and 1:2 dimethyl -1:2 diethylethylenedioxy dimethylsilane. Fillers disclosed are carbon, silica, carbonates and silicates. Specification 791,169 is referred to.
Patent GB-239429-A (GB)
Title: Improvements in hose couplings
IPC: F16L37/20
Filed: 1925-01-26
Abstract: 239,429. Winkler, G. W. Jan. 26, 1925. Couplings, disconnectible.-Relates to hose couplings of the type wherein hose sections 12, 13 are provided with coupling-members 10, 11, the member 10 having integral hooks 16 and a cam lever 20, pivotally connected to a link 19, adapted to engage bearings 17 and a cam lug 22 respectively formed on the member 11. In order to prevent accidental uncoupling of the sections should the lever 20 meet obstructions, the free outer end 23 of said lever is bent inwardly and is surrounded by a U-shaped guard element 24 fitted on the member 11. The member 10 is provided at the coupling end with a conical seat 14 to be engaged by a complementary projection 15 on the member 11.
Patent GB-142531-A (GB)
Title: Improvements in suction sweepers
IPC: A47L9/04
Filed: 1919-01-30
Abstract: 142,531. Hoover, H. E. Jan. 30, 1919. Vacuum cleaning-apparatus. - In a vacuum cleaner having a brush within the nozzle casing, the casing is formed with an aperture in one of the side wall, through which the brush may be withdrawn, and which is normally closed by a plate to which the brush shaft is indirectly attached; wire guard-fingers prevent the withdrawal of the brush through the dust inlet; the height of the brush from the ground is adjustable; and means are provided to prevent fouling of the brush and bearing-parts. Fig. 2 shows, in horizontal section, a plate B' filling an aperture in one of the walls of the nozzle casing, rabbeted at the periphery and having a brush-carrying " lever " C rotatably pinned on it and formed with a cup D surrounding a flange D<3> on the brush. The lever is rotated by a pin C<5> passing through a slot in the plate B<1>; the slot serves to admit air, which, flowing through passages E<1>, keeps the end of the shaft clear of dirt. The brush is retained by wire guard-fingers A<4> bent upwards to overhang the flange A<9>.
Patent GB-1210052-A (GB)
Title: Laser device
IPC: C03C3/095
Filed: 1969-01-15
Abstract: 1,210,052. Laser glass composition. OWENSILLINOIS Inc. 15 Jan., 1969 [15 Jan., 1968], No. 2367/69. Heading C1M. [Also in Divisions C4 and H1] A glass rod used as the active medium in a laser (see Division H1) is composed, in approximate mole percentages, of 45 to 75% SiO 2 , 15 to 35% Li 2 O, 0 to 30% CaO, 0À2 to 0À7% Nd 2 O 3  and 0 to 8% Al 2 O 3 . The total amount of Li 2 O and CaO is not substantially higher than 50%, and when the Li 2 O present is about 15% the amount of CaO is at least about 10%. When the CaO content is about 0% the amount of Li 2 O is at least about 24%. The glass composition may include 0À1 to 0À5% of CeO 2 , or less than half this quantity of CeO 2  may be used in conjunction with antimony or titanium provided as a solarization inhibiting agent. Examples of glass compositions are given in the Specification.
Patent GB-1579917-A (GB)
Title: Machine tool with a rotatable spindle and a tool holder
IPC: B23B31/117
Filed: 1978-01-20
Abstract: In this machine tool, the longitudinal bore of the work spindle (11) is provided at one end with a socket (50) which tapers conically inwards and into which the conical shank (49) of a chuck (10) with a tool holder (42) is inserted and is releasably held by a collet (94) in the spindle bore (104). In addition, an automatic locking means (83, 84) is provided which in normal working position locks the chuck with the tool holder in the spindle and can be unlocked upon release of the collet by means of a push rod (107). This locking means consists of a recess (101, 102) in the conical socket (50) and of locking balls (83) in the chuck (10) which are automatically held in locking engagement by a cone (72) under spring pressure (77). This permits mechanically simple and reliable mounting of the chuck. <IMAGE>
Patent GB-450971-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J17/06
Filed: 1935-01-25
Abstract: 450,971. Thermionic cathodes. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and KNIGHT, H. DE B., 108, Eastlands Road, Rugby. Jan. 25, 1935, No. 2509. [Class 39 (i)] A cathode of the directly or indirectly heated type and particularly for use in gas or vapour filled discharge devices consists of gauze sheets welded on to the sides of plates, the gauze receiving the emissive material such as a mixture of barium and strontium carbonates, which is subsequently reduced. As shown a number of plates 3 are welded together to form a cylinder with radial vanes and central tube 2, which receives the heater 1 ; the gauze sheets are welded to some or all sides of the plates 3. Heat shields 4, 5 surround the cathode. According to the Provisional Specification the cathode may be made of rolled gauze impregnated with emissive material.
Patent GB-981822-A (GB)
Title: New pyridinium chloride compounds, process for their manufacture and their use
IPC: D06L4/629
Filed: 1963-01-21
Abstract: The invention comprises compounds of the formula <FORM:0981822/C2/1> or <FORM:0981822/C2/2> n which X is hydrogen or methyl and m is 1 or 2. They may be prepared by reacting the corresponding chloromethyl compounds with a pyridine compound of formula <FORM:0981822/C2/3> in which X is hydrogen or methyl.  The chlormethyl compounds used as starting materials may be prepared by introducing 1 or 2 chloromethyl groups into 2,5-di-[benzoxcyolyl-(21)]-furan compounds of formula <FORM:0981822/C2/4> in which Z stands for H or CH3, by reaction with hydrogen chloride and formaldehyde or with dichloromethyl ether in the presence of chlorosulphonic acid. The 2,5-di-[benzoxazoly-1-(21)]-furan compounds may themselves be formed by reacting furan-2,5-dicarboxylic acid or a functional derivative thereof at 160-260 DEG  C., preferably in the presence of a condensation catalyst, with 1-amino-2-hydroxy-5-methyl-benzene in the molecular ratio of 1 : 2.ALSO:New compounds having the formula <FORM:0981822/D1-D2/1> or <FORM:0981822/D1-D2/2> in which X is hydrogen or methyl and m is 1 or 2 are used for the optical brightening of fibrous materials made of cotton, viscoses, acetate rayon, polyvinyl chloride, polyethylene, polypropylene and polyamides, and polyacrylonitrile and acrylonitrile copolymers. The fibrous materials may be treated with aqueous solutions of the optical brightening agents, preferably at 50-100 DEG C.  The solutions used may be partial, weakly alkaline or acidic.  The new compounds may be added to bleaching baths, for example, chlorite bleaching baths and may also be used in conjunction with a dispersant, a water-soluble inorganic salt or a dressing agent.  In an example a polyacrylonitrile fabric is treated at 60-100 DEG C. with a bath containing one of the new optical brightening agents, formic acid, an adduct from ethylene oxide and octadecyl alcohol and sodium chlorite.
Patent GB-524246-A (GB)
Title: Improvements in or relating to the purification of resins by distillation
IPC: H01B3/22
Filed: 1939-01-25
Abstract: 524,246. Impregnating-composition for electric insulation; distilling. DUSSEK BROS. & CO., Ltd., and THOMPSON, A. W. Jan. 25, 1939, Nos. 2570 and 2646. [Class 140] [Also in Groups III and XXXVI] An insulating composition for electrical equipment comprises a refined rosin obtained by subjecting an impure rosin to flash distillation under reduced pressure to avoid overheating and decomposition of the distilland dissolved in a mineral oil. Preferably the rosin constitutes 5 to 45 per cent. of the composition. The oil may be pretreated with activated clay or carbon immediately prior to compounding with the rosin by heating at 120-150‹C. The oil is preferably derived from a naphthenic base crude and has a viscosity of 200 secs. redwood or higher at 140‹F. Paper impregnated with the composition may be used as insulator in electric cables or condensers. A suitable still for producing the refined rosin is made of stainless steel, enamelled iron or steel or aluminium and consists of a bundle of tubes secured at each end in a plate and supported in a closed tubular container which increases in size above the tubes and forms a froth chamber which is provided at its outlet with a spray-trap. The heating fluid, e.g., diphenyl oxide is boiled under a pressure corresponding to 300-400‹C. and its vapour is condensed around the outside of the tubes, after evacuation of the apparatus molten rosin at 160‹C, is sucked into the still and directed as a thin film on to an inclined helical trough secured to the walls of the froth chamber and is thereby degasified. The charge is sufficient just to cover the ends of the tubes and a constant level is maintained during distillation. A mechanically driven impeller below the bundle of tubes is then started and the rosin is circulated upwards through the central tubes and downwards through the outer tubes at a velocity of 5 ft./sec. The temperature is preferably maintained at 225-235‹C. under a pressure of 3 mm. of mercury. The vapours from the other still pass vertically downwards through the first condenser cooled to 80‹C., this condensate constituting the refined rosin and remaining vapours (containing terpenes and other impurities) are passed to a second condenser cooled to 20‹C. The condensate is removed by the pumps which are preferably a series of steam jets backed by a water flooded vacuum pump. Specification 333,196, [Class 140], is referred to.
Patent GB-707794-A (GB)
Title: Improvements relating to automatic voltage regulators
Inventor: BRIGGS PHILIP HAROLD
IPC: G05F1/42
Filed: 1952-01-31
Abstract: 707,794. Automatic voltage control systems. FIELDEN (ELECTRONICS), Ltd. Nov. 7, 1952 [Jan. 31, 1952], No. 2597/52. Class 38(4) An autcmatic A.C. voltage regulator consists of a variable ratio auto-transformer 1, adjusted by a reversible electric servomotor 5 in accordance with the amplified output of a voltage-sensitive bridge. The bridge consists of a pre-set resistance 11 and a filament lamp 10 connected in series across a tapped secondary of a transformer 9 (supplied from the regulated output). The output of the bridge is coupled by transformer 12 to the resistance-capacity coupled amplifier 14, 17, the output of which energizes the stator of motor 5 via a phase shifting condenser 25. The motor rotor is energized from the same source as the bridge. The motor has a winding 5c from which a stabilizing signal is fed back to the amplifier input.
Patent GB-957925-A (GB)
Title: Sedimentation tank
IPC: B01D21/00
Filed: 1962-01-24
Abstract: 957,925. Gravity-separation apparatus. A. S. ELLILA. Jan. 24, 1962 [Jan. 31, 1961], No. 2634/62. Heading B1D. A settling tank 1 comprises a chamber subdivided by partition walls 10, 11 into a number of flow channels or conduits 4, the length of each channel in the direction of flow being greater than its width or depth, and discharge of the liquid taking place through flow regulating means, e.g. overflows or holes 9, into an outflow compartment 7, common to all or a number of the channels, a lesser head of liquid being maintained at the outlet of the flow regulating means than at the same level in an inlet compartment 6. At one end of the tank is an inlet channel 2 and compartment 6 with a baffle 6a, and at the opposite end an outlet channel 3. For cleaning, the channels 4 are shut off from the other parts of the system, a bottom valve 12 is opened, and the channels are emptied therethrough ; a spray or sprays may be provided, e.g. in the holes 9, for backwashing the channels. Alternatively, the channels are backwashed by raising the liquid level in the compartment 7.
Patent GB-194873-A (GB)
Title: Improvements in or relating to log frames
IPC: B27B29/08
Filed: 1922-01-30
Abstract: 194,873. Bottamley, G. Jan. 30, 1922. Log-sawing machines. - Extensions E are attached to a saw bench F and carry rollers D on which runs a table A carrying the timber to be sawn. Ropes H are fastened to the ends of thetable and are wound on to drums K turned by hand. A single endless rope may be used.
Patent GB-491445-A (GB)
Title: Improvements in electric discharge devices for generating high frequency oscillations
IPC: H01J25/68
Filed: 1937-01-29
Abstract: 491,445. Electron-oscillators; aerials. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 29, 1937, No. 2697. Convention date, Jan. 29, 1936. [Classes 39 (i) and 40 (v)] In an electron-oscillator having a filamentary cathode and at least one additional electrode, the cathode is so constructed that the distance between the electrodes is variable by varying the magnitude of the cathode heating current. In the form shown the cathode 36 is U-shaped with a nickel disc 35 welded to the bight, the grid 23 is a U-shaped wire with its plane normal to the axis of the tube and the .anode 24 is the flat end of the leading-in wire. Heating the cathode causes the legs of the U to expand and shortens the distance between cathode and anode which, when operating at 4À8 cms, may be 6 mils, the grid being midway between. In modifications, the grid may be a single straight wire or may be omitted, and the disc 35 may be omitted. The device may give Barkhausen-Kurz oscillations which are enhanced by the addition of gas such as mercury vapour in which plasma electron oscillations are stated to occur in resonance. A getter may be carried on a plate mounted in a bulb sealed to the side of the envelope. Tuning discs 28, 29, 30 are arranged on the leads. For reception of polarized waves the grid may be set in the plane of polarization, when no disturbing effect on the anode-cathode axis is possible ; but the best results are said to be obtained when this plane bisects the angle between the grid and the axis.
Patent GB-637652-A (GB)
Title: Improved inertia device for regulating the rotation of shafts and like driven members
IPC: F16F15/315
Filed: 1947-01-29
Abstract: 637,652. Torsional vibration - dampers. ETABLISSEMENTS E. BRANDT. Jan. 29, 1947, No. 2718. Convention date, Jan. 30, 1946. Drawings to Specification. [Class 108 (iii)] [Also in Groups XXVI and XXXVIII] In a sound-film apparatus, variations in the rotary motion of a drum over which the film passes are damped by means comprising a shaft mounted between very low friction bearings and carrying a fly-wheel fixed rigidly thereon, and a bearing race on the shaft to carry the drum. Additional fluid coupling between the drum and fly-wheel may be obtained by the addition of lubricant in the bearing race.
Patent GB-632073-A (GB)
Title: Electric sewing machine cabinets with built-in motor controllers
IPC: D05B69/18
Filed: 1948-01-30
Abstract: 632,073. Work-benches. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Jan. 30, 1948, No. 2804. [Class 61 (ii)] [Also in Group XXXVII] A controller for an electric motor driving a sewing machine is located within the base of the machine cabinet, and an actuator for the controller is movable into the base when the cabinet is not in use for sewing and is readily releasable for outward movement when the operation of the sewing machine is desired. When not in use, the actuator is latched within the general contour of the cabinet which is adapted to be used as a writing desk under these circumstances. The sewing machine cabinet 11 has hinged cover leaves 12, a leg 13 and a column of drawers 14. The cabinet includes a rear wall 15 and a front wall 16, the space between such walls constituting a cavity into which the machine is lowered when not in use. A motor controller is mounted in a hollow base portion 17 and has an actuator 39. Slight pressure applied to the protruding end of the actuator unlatches it and allows a spring to move it outwardly to an operative position wherein it may be foot-operated to regulate the speed of the driving motor. After operation of the machine, the member 39 is pushed inwardly and latched in an inoperative position.
Patent GB-739366-A (GB)
Title: Improvements in and relating to couplings for rotary tools
IPC: A47L11/16
Filed: 1954-01-29
Abstract: 739,366. Securing rotary tools to shafts. CANADIAN GENERAL ELECTRIC CO., Ltd. Jan. 29, 1954 [Jan. 31, 1953], No. 2814/54. Class 80 (2). For securing a rotary tool, such as a brush 3, to its driving shaft 2, a flanged member 4 fixed to the tool and the shaft end have polygonal and cylindrical interfitting parts 10, 7 and 11, 8. A spring ring 13 located in a groove 12 in the shaft and bearing against a flared edge 9 of the member 4 retains the tool in position.
Patent GB-906917-A (GB)
Title: Improvements in tying and binding machines
Inventor: NICKELS SYDNEY BRICE
IPC: B65B13/12
Filed: 1960-01-27
Abstract: 906,917. Bundling machines. PACKAGE SEALING CO. (EXPORT) Ltd., and PLATT BROS. & CO. Ltd. April 27, 1961 [Jan. 27, 1960], No.', 2983/60. Class 94 (1). A machine for securing wire bands about packages and of the kind where the wire is passed round the package by a rotating ring, has an additional package support table on the wire inlet side mounted so that the wire may pass round and beneath it. The wire W runs through a tube 11 carried by the ring 12. The additional table 18 is supported only by two rotatable members 21, the peripheries of which run in grooves in fixed blocks 22 and are releasably located by spring-loaded pins 25. As the ring rotates, the tube 11 enters a slot 27 in each member 21 rotating it and at least partially supporting the table during such rotation. The wire can thus pass freely beneath. The guiding, severing and tying means may be as described in Specification 523,786.