baber/WOPTO huggingface dataset:
Patent GB-556054-A (GB)
Title: High frequency amplifier
IPC: H03F1/08
Filed: 1942-06-19
Abstract: 556,054. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. June 19, 1942, No. 8436. Convention date, June 21, 1941. [Classes 39 (i), 40 (iii) and 40 (v)] A high frequency amplifier comprises a triode valve with the anode earthed for high-frequency and a reactance, connected between the cathode and ground, constituted by the shielding conductor of a co-axial line section with the input applied between the grid and earth through the inner conductor of the line section and a second independent co-axial transmission line arranged to provide a tuning reactance between the grid and the anode. The Figure shows an arrangement in which input from a source 43 is applied over conductor 44 while the line formed of cylindrical conductors 47, 48, 49 constitutes the cathodeearth impedance the space between conductors 48, 49 serving to house the filament heating leads supplied from transformer 51. The load circuit may include a variable inductance 58 while an inductance 64 may be connected across the input line to increase the voltage applied to the grid. The anode 24 is provided with cooling fins and is earthed for high frequency by a condenser constituted by a glass cylinder 26 silver plated on both sides contained in a metal shell 27 provided with an air blower 30 the whole structure being mounted on rails 23. Grid bias is applied from a source 39 through a co-axial line 34, 35 which forms a neutralizing inductance to eliminate the feedback effect of the grid-anode capacity.
Patent GB-451615-A (GB)
Title: Brake mechanism for motor and other vehicles
IPC: B60T13/38
Filed: 1935-03-19
Abstract: 451,615. Fluid - pressure brakes. DOORNE, H. J. VAN, Eindhoven, Holland. March 19, 1935, No. 8592. Convention date, May 12, 1934. [Class 103 (i)] A control valve for vehicle brakes that are applied by springs and released by compressed air or vacuum comprises for a compressed air sys. tem, a tubular member 22 movable by the pedal &c. against the action of a spring 38 and carrying a piston 25 subject to the pressure in a brake cylinder chamber 27, the lower end of the member 22 being adapted to seat on a valve 32 to cut off the chamber 27 from the atmosphere ports 24 and the valve 32 being adapted to seat on a fixed seat 35 to cut off the reservoir chamber 30 from the chamber 27. The spring 38 seats on a cap 40 screwed on to the fixed casing 12. The system comprises brake cylinders 8 on a motor vehicle or as shown on a trailer each provided with an extension 17 housing a spring acting on the piston to apply the brake, but normally prevented from doing so by compressed air acting on the other side of the piston. Compressed air supplied to the reservoir 4 by the compressor 1 flows through pipe 5<1> chambers 30, 27 of the control valve 12, and pipe 5 to the cylinders 8 until the pressure acting on the valve piston 25 moves the rod 22 upwardly to permit the valve 32 to seat against the wall 29, this pressure. being sufficient to release the brakes completely and being maintained against leakage. To apply the brakes the rod 22 is raised farther to unseat the rod from the valve 32 permitting air to escape from the cylinders 8 through pipe 5, chamber 27 the rod 22 and ports 24 in the rod ; since, when the brakes are released the pressure on the two sides of the piston 25 are balanced, the pressure which must be applied to the rod 22 by the operator in applying the brakes is dependent upon the braking pressure. When the pedal is released the valve 32 is unseated and the brakes are released. The pedal 10 may operate the valve device 12 through a floating link 10<b> to which is also connected by link 10c the cross-shaft 9 of the tractor brakes so that with cylinders 8 operating the trailer brakes, the application of the tractor brakes will be proportional to that of the trailer brakes. Operation may instead be effected by a hand lever 11, the cross-shaft in this case being connected to it and the valve by links 11<a>, 9<e>.
Patent GB-449350-A (GB)
Title: Improvements in the refining of ferrous and non-ferrous metals and alloys
IPC: C22B9/05
Filed: 1935-03-20
Abstract: 449,350. Joint-making packing. TULLIS, D. R., Somerfield, Manor Drive, Sutton Coldfield, and OAKLEY, P., The Tower, Rainhill, Liverpool. March 20, 1935, No. 8651. [Class 122 (iii)] [See also Group II] A joint is made between a crucible a and a flange c<1> depending from its cover c by means of a metallic ring p, which is moved down to fit over the upper edge of the crucible by a number of screws q having heads inserted in T-shaped notches in the ring.
Patent GB-216979-A (GB)
Title: Sweeping apparatus for use with mechanically driven trucks and the like
IPC: E01H1/04
Filed: 1923-03-27
Abstract: 216,979. Dawkins, T. C. March 27, 1923. Sweepers.-Apparatus for sweeping railway stations and other buildings, of the kind comprising a frame 1 running on a pair of brushdriving wheels 10 and a single castor-wheel 37, is detachably connected to a motor truck 5, by bolts 3, Fig. 4, engaging a pair of arms 2 extending forwardly of the sweeper frame. The brush 8 and its driving spur-wheels 13, 14 are supported by bars 15 adjustable vertically on each side of the frame by cross-connected screwgears 17 operated by a hand-wheel 23. The dust receptacle is in the form of a shallow tilting hood 24, which is recessed to fit closely over the brush and has openings 25 through which the dust is impelled when the sweeper is either being pushed or drawn by the truck. The dust is discharged through a door 27 when the hood is tilted to the position shown in Fig. 3 by rotating a screw through a hand-wheel 33, the nut 30 being carried by a bell-crank 31 having a pin- and-slot engagement with the hood.
Patent GB-670281-A (GB)
Title: Improvements in or relating to drilling machines
Inventor: HUTCHINSON PHILIP
IPC: B29D23/14
Filed: 1949-03-31
Abstract: 670,281. Multiple-spindle drilling machines. EAST ANGLIAN ENGINEERING CO., Ltd., and HUTCHINSON, P. March 31, 1950 [March 31, 1949], No. 8801/49. Class 83 (iii). A multiple-spindle drilling machine for buttons or like articles comprises several turret work-holders arranged round a continuously rotatable table and a corresponding number of vertically-fed drill units moving round with the table, each drill unit being in substantially vertical alignment with or slightly offset from the axis of each work-holder. The table 13 and a drill unit platform 34 are rotated on a central shaft 18 by gears 23, 24 and a reduction gearbox 26 driven by a motor 28 and a stationary gear ring 45. Stationary cams 72, 55, 85 and 106 are arranged concentric with the shaft. The six drill spindles 95 are driven by a common belt from a single motor and the drill sleeves 92 are raised and lowered after each indexing of the work-holders by rollers 105 engaging the cam 106; the drill units may be mounted in a slightly inclined position. Each work-holder is indexed by a gear 44 engaging the gear ring 45 and by a friction drive 56 which rotates the spindle 41 after a locking lever 48 is disengaged from a notched disc 47 by the cam 55, the rotation continuing until the lever engages the succeeding notch. Button blanks are fed by hand or automatically to a plate 70 of the work-holder and feed arm 78 on a spindle 75 operated by the cam 85 and a lever 87 sweeps the button into alignment with a holding cup 67 connected to a spring-loaded rod 62 inside the work-holder spindle. The feed arm is then withdrawn and the cam 72 allows the cup to be lowered to grip the button during the drilling operations. After the required number of holes, (four, in the machine illustrated), have been drilled, the holding cup 67 is lifted and a spring-loaded finger pivoted on an arm 79 attached to the spindle 75 is released and sweeps the button into a shoot or into a'partitioned sorting box 110.
Patent GB-610027-A (GB)
Title: Improvements in and relating to multi-conductor units and methods of manufacturing such units
IPC: H01J5/26
Filed: 1945-04-10
Abstract: 610,027. Metal-to-glass seals. GENERAL ELECTRIC CO., Ltd., BREADNER, R. L., and SDIMS, C. H. April 10, 1945, No. 8840. [Class 36] A multi-conductor unit comprises a prefabricated glass body 2 with conductors 1 sealed therethrough and its edge-portion 3 conforming to the profile 5 of the metal casing or like unit 4. As shown, the latter is heated whilst supported on the flange 6 of a dieblock 7 and pressure applied to effect a seal around the periphery of the glass body. According to the Provisional Specification, the dieblock may be evacuated to set-up a pressuredifference on the faces of the glass. Specification 593,500 is referred to.
Patent GB-141503-A (GB)
Title: Method of cooling pistons & valves of heat engines
IPC: F02B77/02
Filed: 1919-04-08
Abstract: 141,503. Chytroeus, G., and Revell, R. April 8, 1919. Valves.-The cooling of the valves is facilitated by coating their surfaces which are remote from the hot gases with a good conductor of heat, preferably by electrode position. The whole surface may be coated, and the coating removed from the parts on which it is not required.
Patent GB-744916-A (GB)
Title: Improvements in or relating to motor driven mowers or cultivating devices
IPC: B62D49/06
Filed: 1953-03-31
Abstract: 744,916. Rotary cultivators; mowing-machines. RANGER (FERRING), Ltd., E. F., and RANGER, E. F. March 26, 1954 [March 31, 1953; Sept. 1, 1953], Nos. 8961/53 and 24198/53. Classes 6 (1) and 6 (2). [Also in Group XXXI] A mower or rotary cultivator comprises a framework supported at the rear on one or more wheels or a roller 13 and provided with a seat 6 for the operator, and a steering pillar 23 mounted in a bearing 16 at the front of the framework and attached at its lower end to a carrier for a motor 31 driving one or more land wheels or rollers 32 and a cutter or cultivating tool 49, the carrier, wheel 32 and implement 49 being movable about the axis of the pillar 23. The frame is formed by braced U-shaped tubular members 10, 15 carrying foot-rests 30 for the operator. The carrier for the motor consists of an inverted U-shaped member 33 carrying a socket 34 embracing the pillar 23, a tubular member 35 attached to the socket 34, and a U- shaped member 36 the two limbs of which are attached to the limbs of the member 33 and the base is attached to the member 35. The motor is adjustably supported by means of a bracket 59, arm 64, and plates 55, 56. The motor drives, by means of a sprocket chain, a shaft 39 to which is secured a pulley 53 driving the cutter or tool, and to which the hub of the wheel 32 can be clutched so that the wheel 32 can be stationary while the cutter or tool continues to rotate. The cutter or tool is mounted in a casing 28, adjustable for height by means of a roller 9 and liftable out of operative position by a U-shaped foot-lever 45 pivoted at 46 and connected to a bar 43 on which the casing is pivoted. The bar 43 is attached at each end to a rod 42 slidably mounted in a tube 41 pivoted on the shaft 39. The tool can be held in raised position by a spring-pressed detent 48 releasable by means of an operating-lever 27 on the handle-bar or steering-wheel 24 secured to the pillar 23 and on which are also mounted the control levers for the throttle and the clutch.
Patent GB-834140-A (GB)
Title: Improvements relating to electrical switches or circuit breakers
Inventor: PEARSON STANLEY JOHN
IPC: H01H71/20
Filed: 1957-03-19
Abstract: 834,140. Vacuum switches; electricallyreleased switches. BRITISH THOMSONHOUSTON CO. Ltd. Feb. 5, 1958 [March 19, 1957], No. 8991/57. Class 38 (5). A vacuum switch has its contacts 2, 2a normally held closed against the opening bias of a spring 8 by a fuse 9 connected in series with the switch contacts. The fuse is connected between the casing 3 and a plate 5 carried on the end of a contact operating rod 6 which is sealed to the casing by a bellows 4. When the fuse 9 blows, the spring 8 acting on the plate 5 opens the contacts 2, 2a.
Patent GB-273799-A (GB)
Title: Improvements relating to carding engines and the like
IPC: D01G15/36
Filed: 1926-04-06
Abstract: 273,799. Fairbairn, Lawson, Combe, Barbour, Ltd., and Kirk, R. April 6, 1926. Carding - engines. - The speed of rotation of the worker rollers is capable of instant and gradual alteration without stopping the carding-engine and the speed of rotation of the stripper rollers can be independently altered. A shaft A is continuously driven and carries belt cones B, C. Aligned shafts carry corresponding belt cones B<1>, C'. The belts b, c can be moved over the cones by hand screws b<1>, c'. The cone B<1> drives the stripper rollers by means of a belt pulley B<2> and the cone C<1> drives the workers by means of a gear train C<2>. Any form of variable speed gear may be employed and the worker rollers may be driven independently of the cylinder shaft by means of a variable speed electric motor. Specification 267,135 is referred to.
Patent GB-901196-A (GB)
Title: Improvements in or relating to production of metallic developers for electrophotography and metallic inks and paints
IPC: C09D11/02
Filed: 1961-03-13
Abstract: Metal powders formed by grinding at 3,000 r.p.m. (see Group XXII) are used in printing inks.  The metals may be aluminium ground for 5 minutes, aluminium bronze ground for 12 minutes or tin bronze ground for 10 minutes.  White spirit is used as a solvent and for each grm. of metal there is added 3 grms. of stand oil and 3 grms. of vinyl toluene modified alkyd based on castor oil.
Patent GB-772693-A (GB)
Title: Improvements in the production of hydroxylamine salts
IPC: C01B21/14
Filed: 1955-03-29
Abstract: In the production of hydroxylamine salts by the reduction of nitric oxide by hydrogen in an acid medium at a catalyst containing platinum metal, at least one of the elements, arsenic, antimony, bismuth, sulphur, selenium, or tellurium are also present.  5-15 per cent gram atoms of the element as a compound may be added to a platinum compound and the two compounds mutually reduced in the preparation of the catalyst. Alternatively, 3-5 per cent gram atoms of the element as a compound, which is reduced under the hydroxylamine production condition, is added to the platinum metal catalyst, preferably in the acid medium, before or during the reaction.  Arsenic, antimony, and bismuth are used as trivalent compounds, and sulphur, selenium, and tellurium as di- and/or tetravalent compounds.  In examples: (1)-(3) a 1 per cent platinum on graphite catalyst is suspended in sulphuric acid, arsenious, selenious, or tellurous acid, potassium antimonyl tartrate, bismuth nitrate, or sodium sulphide, or mixtures of two of these compounds are added, and hydrogen and nitric oxide are passed in at 45 DEG C. and atmospheric pressure; (4) one of the above compounds is added to the platinum chloride solution, which is reduced by formic acid in the presence of graphite powder in the preparation of the catalyst; (5) a mixed platinum and gold on graphite catalyst is used.
Patent GB-760149-A (GB)
Title: Improvements relating to herbicides
IPC: A01N39/04
Filed: 1954-03-29
Abstract: A water soluble herbicide to be dissolved in liquid solvents or diluted with solid or liquid diluents and to be spread upon the ground for killing weeds, consists of a solid, hard and brittle substance containing 40-80 per cent, preferably 45-65 per cent. alkali metal salt of chloro-methyl-phenoxy-acetic acid and, as by-products and residues from the manufacture of these salts by the reaction of a chloro cresolate with alkali metal chloro acetate in the presence of only a small amount of water, alkali metal chloride and alkali metal glycollate.  Preferably the proportion of the alkali metal salt is at least 3 times that of the alkali metal chloride.
Patent GB-878174-A (GB)
Title: Means for indicating a signal source
Inventor: SMITH WILFRED
IPC: G21C17/04
Filed: 1959-03-17
Abstract: 878,174. Nuclear reactors. HAWKER SIDDELEY NUCLEAR POWER CO. Ltd. March 17, 1960 [March 17, 1959], No. 9195/59. Class 39(4). Means for providing a remote indication of the source of a signal which may issue from any one of a plurality of sources comprises a signal detector associated with each source, a number of indicators less than the number of sources, and means for connecting the signal detectors to the indicators in accordance with a matrix considered to be formed by the signal detectors in three or, more dimensions notionally at right angles, to each other. Fig. 2 illustrates an arrangement that may be used for monitoring the coolant of a nuclear reactor having 18 fuel channels. A sample of coolant from each channel is fed to a detector (shown as a circle in the Figure) and the detectors are arranged in a 3. X 3 X 2 matrix connected to 8 indicators X, Y and Z, and a signal produced by one of the detectors is indicated uniquely by the X, Y and Z co-ordinates shown by the indicators. In practice there will be a much larger number of coolant channels, e.g. 895, and this number may be made up to the nearest convenient matrix number, e.g. 900, by including some dummy detectors. A four dimensional matrix may be realised by assigning a four digit number to each detector and connecting together to a common indicator all detectors having the same digit in the same position.
Patent GB-375405-A (GB)
Title: Improvements in or relating to electric telegraphy
IPC: H04L25/03
Filed: 1931-03-26
Abstract: 375,405. Code telegraphy. STANDARD TELEPHONES & CABLES, Ltd. and LATIMER, K. E., Connaught House, Aldwych, London. March 26, 1931, No. 9226. [Class 40 (iii).] Relates to systems in which the beginning and end of each block signal are denoted by impulses of opposite signs with an interval of zero current. When, in such a system, those Fourier components whose frequency is lower than the dot frequency are suppressed, the wave-form of each impulse is oscillatory though the first half-cycle is of greater amplitude than the second. The relay armature tends to be reversed by the second half-cycle, and to prevent this effect a relay of the Gulstad type is adjusted to be less sensitive during the second half-period than during the first. Signal impulses are applied through the transformer RC to the line-windings LW1 .. LW4 of the relay. The vibratory windings VW1, VW2 are in circuit with a condenser C and resistances R1, R2 and, if desired, a shunt resistance R3, the dimensions being such that when no signals are being received the armature T does not vibrate but merely tends to leave the contact, such as S, on which it lies. When this tendency is assisted by the first half-cycle of a signal the armature leaves the contact S, and its motion is assisted by discharge of condenser C. When it reaches contact M the negative charging of condenser C urges it against contact M and counteracts the reversing tendency of the second half-cycle of the signal. Thereafter the armature T lies on contact M until the signal current in the line is reversed, but meanwhile the current through R1 has risen to such strength that it tends to urge the armature away from the contact M on which it now lies.
Patent GB-249680-A (GB)
Title: Improvements in burners for autogenous metal-cutting and welding
IPC: F23D14/46
Filed: 1925-04-07
Abstract: 249,680. Peters, H. April 7, 1925. Blowpipe burners.-The gas pipes a, b of an autogenous metal cutting or welding 'burner diverge from or are spaced apart at the burner-head k so as to form a gap through which the burner-nozzle and work can be observed. An adjustable coloured glass or mica screen n may be mounted on trunnions o, o<1> on brackets r, r' on the pipes a, b to protect the operator's eyes. The gas pipes a, b are swivel-mounted at their other ends in a casing d formed with two right-angled passages connecting with supply pipes passing through the handle c so that the burner may be adjusted relatively to the handle. Alternatively, the pipes a, b may be jointed separately to the supply pipes and may be superposed except in the vicinity of the viewing gap. The burner-head k carries the burner nozzle at right-angles to the plane of the pipes a, b and may be fitted with axially adjustable rods s carrying guide-rollers t. The gas pipes a, b pass through a casing g in which is arranged a valve h for regulating the oxygen supply and a mixing valve i. The acetylene or hydrogen supply is regulated by means of a valve
Patent GB-566491-A (GB)
Title: Improved means for grading headed articles such as rivets
IPC: B07C5/06
Filed: 1943-06-10
Abstract: 566,491. Sorting rivets; sifting apparatus. ROE & CO., Ltd., A. V., WAINMAN, T., BUCKLEY, H. I., DAVIES, R. P., THISTLETHWAITE, H., and GREAVES, A. B. June 10, 1943, No. 9351. [Class 117] Rivets are graded according to the.size and shape of their heads by a rotating drum consisting of bars d parallel with its axis, and formed of wedge shape with the base of the wedge facing inwards. The rivets which fall through the slots between the bars are collected in a tray b; those whose stems only pass into the slots are carried around till they drop into a receptacle c supported inside the drum, a wiper j and plate k assisting this operation ; and those too large to be dealt with in either of the preceding ways collecting in the drum and being discharged periodically by hinged flaps i into a tray m. The inner faces of the bars may have a hardened wearing plate, and the drum is mounted on rollers carried by shafts, one of which is driven. The drum may be constructed so as to allow adjustment of the bar spacing.
Patent GB-173182-A (GB)
Title: Improvements in grinding mills, disintegrators and like apparatus
IPC: B02C7/00
Filed: 1921-03-29
Abstract: 173,182. Bartmann, L. March 29, 1921. Disc and like mills.-In a grinding-mill, disintegrator, or like apparatus in which the material to be treated is fed by a stream of air under suction, the grinding or disintegrating appliance itself constitutes the floor of the chamber into which the material is carried by the air current so that the material delivered bv the current drops directly and uninterruptedly on to the appliance. The disc 3 rotates beneath a distributing plate 4 having apertures 5, and the material is conveyed by air under suction down a feedpipe 6 connected to the upper part of an air-tight casing 11 secured to the plate 4. Pipes 8 extend downwards from the pipe 6 and terminate some distance above the apertures 5. The air passes upwards through a conical duct 9. Means may be provided for sucking the air from the casing above the duct; as shown, the air is used for carrying the ground material out of the machine. A wide central tube 10 is fitted in the casing, its lower end leading to a central aperture in the plate 4 while its upper end is provided with a funnel 12. The air passes down through the tube 10 and carries the ground material into receptacles 13 which are connected to an annular pipe 14 from which a pipe leads to a separator or finer grinding-apparatus and thence to the pump or other suction apparatus.
Patent GB-199834-A (GB)
Title: Improvements in and relating to route indicators or distance recorders
IPC: G01C17/00
Filed: 1922-04-01
Abstract: 199,834. Shrubsole, E. April 1, 1922. Switches, actuating, by reversal of rotary motion. A switch for intermittently energizing one or other of two electromagnets in accordance with the direction of motion of a vehicle consists of a wheel 33, in electrical connection with a bracket 35, rotated in synchronism with the vehicle wheels. A rod 45 carried by the wheel 33 make contact one in each revolution with one or other, according to the direction of rotation, of two metal blocks 41 carried on either side of a resilient spring 43.