baber/WOPTO huggingface dataset:
Patent GB-295739-A (GB)
Title: Improvements in or relating to single-phase electromagnets
IPC: H01F7/12
Filed: 1927-05-18
Abstract: 295,739. Reyrolle &. Co., Ltd., A., and Cooke, N. May 18,1927.. Electromagnets.-An electromagnet for use with a single-phase current is formed with three limbs, two of which A', A<3> carry single windings D<1>, D<3> and the third A<2> a low resistance winding D<2> in series with the windings D<1>, D<3> and a high resistance winding E<2> in parallel therewith. The armature B in its attracted position is in contact with the pole-face of the limb A<2> but is separated from the lambs A<1>, A<3> by small air gaps or layers of nonmagnetic material. The reluctances of the magnetic circuits through the limb A<2> and either of the other two limbs are nearly equal, and the coils D<2>, E<2> are so connected as to oppose each other. It is stated that by giving the phase-differences and resistances of the circuits suitable values three equal fluxes will be produced in the magnetic circuits through the pairs of limbs A<2>, A<3>, A<3>, A<1> and A<1>, A<2> in such phase relation as to give a practically constant pull.
Patent GB-341818-A (GB)
Title: Improvements in or relating to picture telegraph apparatus
IPC: H04N1/029
Filed: 1930-04-30
Abstract: 341,818. Copying telegraphy. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. April 30, 1930, No. 13364. Convention date, April 30, 1929. [Class 40 (iii).] A photo-electric cell is alternately illuminated by two beams of light, one of constant intensity and the other of an intensity varying in accordance with the tone values of a scanned picture so that the electrical variations of the cell are inversely proportional to the brightness of the point scanned. The two light beams 3, 9 are derived from a source 1 and pass through the apertures 2, 11 in a disc 16 which allows the beams to pass alternately. The beam 3 is modulated by the picture 6 while the beam 9 remains constant in intensity. The fluctuations in the current through the cell 8 caused by the two beams are represented by the curves a, b, respectively in Fig. 3. The tinted wedges 15, Fig. 1, are adjusted so that when the point scanned is white a constant current, curve c1, passes through the cell. When a dark portion is being scanned, the curve a assumes the form in the lower portion of Fig. 3 and the resultant curve c2, and therefore the current through the cell, becomes oscillatory, the variations in the current being inversely proportional to the brightness of the point scanned. A reflector 7, Fig. 1, is used to concentrate light upon the cell 8.
Patent GB-130965-A (GB)
Title: Improvements in Electron Valves.
IPC: H01J19/28
Filed: 1919-05-28
Abstract: 130,965. Connecticut Telephone & Electric Co., (Assignees of Doule, H. P.). Aug. 8, 1918, [Convention date]. Vacuum tubes.-In a rectifier or amplifier an anode is mounted outside a bulb, and a filament and grid inside. The anode 9 is of material such as silver which does not polarize in contact with warm glass, and may be in the form of a band shrunk on to the bulb or secured thereto by clamps, or deposited by electrolysis. The grid 10 is preferably in the form of a spiral or helix surrounding the filament 6. The bulb may be exhausted or may contain inert gas, and is made of glass or quartz which conducts slightly when heated. In a modification, the grid consists of a lining of silver in a sealed glass tube of spiral or helical form surrounding the filament. It is stated that the electrons or ions form on the inside of the bulb a polarizing conductor which coacts with the non-polarizing anode.
Patent GB-280973-A (GB)
Title: An improved apparatus for the dispersion of solids in liquids
IPC: B02C4/22
Filed: 1926-05-29
Abstract: 280,973. Whatmough, W. H. May 29. 1926. Emulsions, making.-In the production of dispersions of solids in liquids, two rollers mounted side by side are rotated in opposite directions so that at the point of contact the peripheries move upwardly. Grinding blocks, of the kind described in Specification 276,401 having bevelled leading edges and flexible insertions, are mounted in contact with the rollers. Relative longitudinal movement between the rollers and grinding-bars is preferably produced by reciprocating the rollers, but the bars alone or both the bars and rollers may be reciprocated. Mounted above the rollers is a hopper formed with end walls projecting down between the rollers to confine the material treated, the grinding-blocks being carried by the frame carrying the rollers. Instead of grinding-blocks, bands such as are described in Specification 276,400 may be employed. In the form shown in Figs. 1 and 2, the spindles 15 of the rollers 1 are carried by blocks 2 slidably mounted in side frames 3, adjusting-screws 4 being provided. Rigidly secured to the blocks 2 are frames 9 in which the grinding-blocks 10 are mounted, radial adjustment being effected by screws 8. Extensions 7 of the side walls 5 of the hopper serve as covers for the grinding-blocks. The hopper is carried by a centrally situated extension 19 of the frames 3 and is pressed down by spring 20 carried by adjusting-screws 21, the end walls 6 projecting down between the rollers. Reciprocation of the rollers is effected by inclined discs 14 on extensions of the shafts 15 engaging fixed rollers 16 carried by one of the frames 3. In a modification, the end walls of the hopper do not make contact with the rollers, and escape of the material being treated is prevented by loose, spring-depressed end plates mounted between the end walls and interior flanges. Flexible aprons engaging the rollers are carried by these end plates when a very close fit is desired. The hopper may be hinged to the frame at one end and the grinding-blocks may be carried by the side walls of the hopper.
Patent GB-1171620-A (GB)
Title: An Improved Sealing Plug for a Nuclear Reactor
Inventor: WEST DEREK
IPC: G21C13/067
Filed: 1966-03-28
Abstract: 1,171,620. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 20 March, 1967 [28 March, 1966], No. 13654/66. Heading G6C. The nuclear reactor standpipe 11 is sealed by plug 12. Resilient lip seals 18 and 19 engage the standpipe bore, and slidable latch members 25 engage the recess 22. Fuel cooling water may be admitted through the channels 21. To remove the plug, the load on the latch members 25 is relieved by thrusting the body 23 downwards. Lifting sleeve 36 is raised by compressing spring 41 to permit locking bolt 38 to move into recess 35. Continued lifting of the sleeve 36 raises the actuating sleeve 26, compressing the spring 40 and the inclined pins 28 retract the latch members 25 radially inwards from the recess 22. The plug 12 may now be removed.
Patent GB-354311-A (GB)
Title: Improvements in and relating to lawn mowers
IPC: A01D34/84
Filed: 1930-05-03
Abstract: 354,311. Lawn-trimmers. LEONARD, W., Bocking Lane, Greenhill, near Sheffield. May 3, 1930, No. 13700. [Class 6 (ii).] A machine for cutting the edges of lawns comprises a fixed spindle b carrying a ground wheel c and mounted in a frame a, a rotatable spindle d being mounted in a bearing e integral with the frame and carrying at one end a pinion f engaging teeth g on the inner periphery of the ground wheel, and at the other end a rotary cutter h provided with angular L-shaped members s to collect the cut grass and throw it into a grass-box. A stationary blade j is removably attached by screws k, and the cutter h is adjustable thereto by nuts t, t, and a retaining screw t<1> on the spindle d. A cover for the cutter is rigidly secured to the frame, and carries the detachable grass-box by a pin-and-socket connection. A handle is secured to the frame. A small ground wheel or roller may be provided at the rear. Specification 298,007, [Class 6 (ii), Gardening &c. appliances], is referred to.
Patent GB-476933-A (GB)
Title: Improvements in and relating to gas or vapour-filled electric discharge vessels madeof glass
IPC: H01J17/04
Filed: 1936-05-14
Abstract: 476,933. Discharge apparatus. ELIN AKT.-GES. FUR ELEKTRISCHE INDUSTRIE. May 14, 1936, Nos. 13722, 13723, and 13724. Convention dates, May 14, 1935, Sept. 12, 1935, and Dec. 24, 1935. [Class 39 (i)] In gas or vapour filled discharge vessels of glass in which the anodes are disposed in separate arms protruding from the main vessel, parts of the glass bounding the space behind the anode are protected from the discharge by a ceramic body which forms a surface covering for the screened parts, being of similar configuration and disposed in spaced relation thereto. Suitable materials are steatite and sintered corundum. In one form the anode lead is covered with glass and a cylindrical ceramic shield is slipped over it. In a modification, Fig. 6, the shield 3 is extended at its upper end 6 so as to protect the curved part of the envelope. One or more transverse baffle plates 4 may be added to impede the penetration of ionization into the space behind the anode. When the expansion coefficients are similar the ceramic part 6 or the transverse plates 4 may be sealed hermetically to the glass wall; in a modification, Fig. 10, the ceramic body 3 forms part of the wall, being hermetically sealed to the envelope and to the glass covering of the anode lead. The envelope may be made re-entrant as shown in Fig. 12 ; the ceramic body extends into the re-entrant portion 7, and may be provided with transverse baffles. In addition, a bell-shaped portion of the protective body may be extended around the anode, as shown, and ceramic shields or wall coatings may be provided, surrounding the discharge path between the anode and control grid. The Specification as open to inspection under Sect. 91 includes also the use of non- ceramic protective bodies. This subject-matter does not appear in the Specification as accepted.
Patent GB-1513839-A (GB)
Title: Separation of particulate material from gas containing such material
IPC: B01D47/10
Filed: 1977-04-05
Abstract: 1513839 Separating particles from gas AIR PRODUCTS & CHEMICALS INC 5 April 1977 [5 April 1976] 13728/76 Heading B1R Particles are removed from a gas entering venturi tube 4 by jets of molten metal, e.g. tin, lead or mercury, ejected from orifices 3 and atomized by the gas stream, the gas and metal then being passed to cyclone 7 and settling vessel 8, where the particles pass over weir 9 into lock hopper 10 and the molten metal is recirculated by pump 2.
Patent GB-367645-A (GB)
Title: Improvements in or relating to bearings
IPC: F16C17/03
Filed: 1931-05-09
Abstract: 367,645. Bearing materials. AKTIEBOLAGET NOMY, 2, Norrmalmstorg, Stockholm.-(Assignees of Wallgren, A. G. F.; 1, Duvnasgatan, Stockholm.) May 9, 1931, No. 13746. Convention date, May 10, 1930. Drawings to Specification. [Class 12 (i).] A bearing of the type such as described in Specification 290,637, [Class 12 (i), Bearings &c.], in which a plurality of bearing blocks are supported by and move with one of the bearing members and which form load sustaining lubricant films with another bearing member have the bearing parts and/or the supporting parts formed of alloy steel or chromealuminium alloy steel which is hardened by adding nitrogen to the surface layers. Specification 350,184 also is referred to.
Patent GB-529044-A (GB)
Title: Improvements in electric circuits comprising electronic discharge devices
IPC: H03G9/08
Filed: 1939-05-09
Abstract: 529,044. Automatic volume control. COSSOR, Ltd., A. C., and JOFEH, L. May 9, 1939, No. 13807., [Class 40 (iv)] [Also in Group XL] In a circuit comprising a pair of grid-controlled valves connected in push-pull and having impedances in their cathode leads so as to provide negative feedback, a variable impedance is connected between the cathodes so as to vary the amount of feedback. Fig. 3 shows an arrangement of resistances in which tappings for grid bias are taken from the cathode resistance and a variable resistance R9 controls the amount of feedback. A reactance may be connected in series with resistance R9 and be variable so that the amount of feedback will vary with frequency. The reactance may be arranged in parallel with the resistance R9, Fig. 5, and may comprise an inductance L1 in parallel with a capacity C3 to provide a dip in the frequency characteristic. Part of the cathode resistances may be common to the two valves and the impedance may be connected between tappings on the resistances instead of between the cathodes. Contrast expansion or contraction may be obtained by providing a resistance that varies with current flow and may comprise a pair of oppositely connected rectifiers in parallel, Fig. 7 (not shown), or a carbon or metal filament lamp. Specification 515,044, [Group XXXVI], is referred to.
Patent GB-1127812-A (GB)
Title: Apparatus for the manufacture of brick or block wall panel units
Inventor: DINNIE ANDREW
IPC: E04G21/22
Filed: 1966-03-29
Abstract: 1,127,812. Brick laying machines. LONDON BRICK CO. Ltd. 28 March, 1967 [29 March, 1966], No. 13820/66. Heading E1S, Apparatus for the manufacture of brick or block wall panel units comprises a conveyor or conveyors 16 adapted to receive the bricks or blocks thereon, a plurality of pick-up heads 15 for transferring the bricks or blocks from the conveyor or conveyors to a panel supporting platform 18, means 2 for dispensing mortar on to the bricks or blocks and means 24, 25 for aligning the latter on the platform and also for preventing the escape of mortar onto the faces of the bricks or blocks. The aligning means comprises side plates 24 which may carry inflatable tubes on .their facing surfaces. The panel is built course by course.
Patent GB-1133120-A (GB)
Title: An improved lock
IPC: E05B65/08
Filed: 1966-03-29
Abstract: 1,133,120. Locks. ADAMS RITE MFG. CO. 29 March. 1966 [29 March, 1965], No. 13828/66. Heading E2A. Actuating mechanism for a bolt for a sliding door, comprises a manually slidable member which is movable to positions.effecting locking and unlocking and a connection .between the member and a movable operating member connected to the bolt. The bolt 18 moves in a slot 17 in one side of a ,tubular frame 10 secured to one edge of a sliding door. The bolt is connected to a rotatable actuating member 19 connected by a spindle 37 to a slide 29 movable in a channel shaped housing 25 to lock or unlock tile door by pressing one of two end caps 36 thereon. The housing which is secured to one side'of the frame 10 has grooves for removably retaining cover 21: integral with a door pull member 23. On the other side of the frame a pull member 24 is secured. A key operated cylinder lock 53 is mounted in a bracket 56 and has a rotatable end spindle connected to a cranked arm with an end pin engaging in a slot in the slide 29 so that by operating the lock 53 tie bolt moves to locking or unlocking position.
Patent GB-249369-A (GB)
Title: Improvements in or relating to yarn dyeing apparatus
IPC: D06B11/00
Filed: 1925-05-27
Abstract: 249,369. Jackson, W. J. Mellersh-, (Fuld & Hdtch Knitting Co.). May 27, 1925. Coating yarns.-Yarn 30 is lifted at intervals by a rocking arm 48 as it is passed continuously over a wick 10 extending through an opening 14 to the upper surface of a tank 12 which is kept full of dye liquor. The liquor is supplied through a pipe to one end of the tank 12 and excess overflows through an aperture 18 at the other end into an outer receptacle 24 from the cover 22 of which the tank 12 is supported by brackets 20. The shaft 50 of the arm 48 is rocked by a crank 64, connected by a link 62 to a crank pin on a driving wheel 58. The effective lengths of the crank and link and the distance of the crank pin from the centre of the wheel can all be varied to regulate as desired the movements of the arm 48. A pair of tensioning plates 34 are provided on the approach side and a guide 36 on the opposite side.
Patent GB-543072-A (GB)
Title: Improvements in or relating to metal vapour electric discharge devices
IPC: H01J13/38
Filed: 1940-09-06
Abstract: 543,072. Metal. vapour apparatus. WHITE, J. E. Sept. 6, 1940, No. 13955. Convention date, Sept. 7, 1939. [Class 39 (i)] In discharge devices of the pool cathode type, the ignition rod 39, of boron or silicon carbide, dips into the mercury &c. pool 49, and is surrounded by a ring 47 also dipping into the pool and disposed so as to form a capillary space between it and the rod. The ring is supported by a U-shaped wire 45 welded to the ends of a bent wire 43 sealed to a bead 41 of glass &c. at the lower end of the rod. The ring may be of a material such as molybdenum which is wetted by mercury or one which is not wetted thereby. The envelope of the device consists of double-walled steel cylinders 3 forming an annular space closed at the ends to provide a water-cooled chamber. The anode 23 is carried by a rod 21 extending through a cup 19 of cobalt-nickel-iron alloy sealed to a ring of glass 17 which is sealed to a ring 15 of the same alloy and is welded to a metal ring 9. The other end of the envelope is sealed by a disc 25 with passages lined with an alloy which seals with glass for the exhausting tube 29 and the insulating sleeve 33 of the ignition lead 35.
Patent GB-1047063-A (GB)
Title: Improvements in and relating to mechanical couplings
IPC: F16H21/44
Filed: 1964-04-03
Abstract: 1,047,063. Linkwork. COMPAGNIE DES COMPTEURS. April 3, 1964 [April 5, 1963], No. 13997/64. Heading F2K. [Also in Division G1] The rectilinear motion of the recording table 10 of a microdensitometer is transmitted to the film sample table 20 through a variable fulcrum lever 3, a movable bar 1 parallel to the table 20, series-connected fixed fulcrum levers 8, a movable bar 2 parallel to the bar 1, and selectively operable magnetic clutches 11, 12 for engaging either bar 1 or 2 with the sample table 20. The fulcrum 4 of lever 3 is adjusted by a screw and nut 6, 7 from a crank 5. The bars 1, 2 may be replaced by bands or metal wires and the levers and joints may be mounted in ball bearings and have play adjustment.
Patent GB-1367755-A (GB)
Title: Irritant-gas projectile
IPC: F42B30/04
Filed: 1973-03-22
Abstract: 1367755 Irritant-gas projectile DYNAMIT NOBEL AG 22 March 1973 [25 March 1972] 14005/73 Heading F3A A projectile comprises a container 2 for an irritant gas, an elastic envelope 1, and a sleeve 4 for fitting on to the muzzle of a launching weapon. The projectile may, however, be thrown by hand. The sleeve may be inseparable from the projectile, or may be separated therefrom in flight by means of an explosive charge and/or by the drag acting on a braking surface 5. The braking surface is constituted by: a plane or perforated disc; a plurality of stabilizing fins; or a plurality of inclined fins, or a turbine disc, which rotate, or rotates the separated sleeve to reduce its range. The sleeve is formed from steel, aluminium, brass, polycarbonates and glass-fibre-reinforced plastics. The projectile includes a fuze which is operable by and another which is operable by firing gas pressure.
Patent GB-1150485-A (GB)
Title: Multiple Stage Reflex AM Receiver
IPC: H04B1/24
Filed: 1967-03-28
Abstract: 1,150,485. Reflex receivers. CLASSIC INDUSTRIES Inc. 28 March, 1967 [25 Jan., 1967], No. 14025/67. Headings H3Q and H3T. In an A.M. receiver having a tuned antenna circuit 20 and an electro-acoustic reproducer 70, a multiple stage reflex amplifier 30 consisting of common emitter transistor stages 31, 41 having shunt negative feedback is connected between the antenna circuit and sound reproducer and has its output connected via a detector circuit including a first capacitor 51 and a diode 52 connected in series to the input of the reflex amplifier which has a second capacitor 53 connected across the input. As shown, the R.F. signal is amplified by the two-stage transistor reflex amplifier 30 which also amplifies the A.F. obtained from the detector circuit 51, 52 and 53. The output A.F. is then amplified in transistor 65 which feeds a loud-speaker 70. The transistors 31 and 41 are provided with negative feedback via resistors 33 and 42 to establish linear operation of these transistors. Capacitor 66 provides an A.C. negative feedback path for the output transistor 65 and capacitor 67 provides a path for unwanted R.F. signals. A capacitor 35 and resistor 36 decoupling network prevents the reflex amplifier from oscillating. Both the R.F. and A.F. gain are controlled by a variable resistor 37. The receiver may be constructed in the housing of a wrist watch and subminiature silver oxide batteries may be used.
Patent GB-1480190-A (GB)
Title: Methods of biologically purifying waste waters
IPC: C02F3/26
Filed: 1975-04-04
Abstract: 1480190 Activated sludge process DEGREMONT SOC GENERALE D'EPURATION ET D'ASSAINISSEMENT and L'AIR LIQUIDE SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUD 4 April 1975 [5 April 1974] 14027/75 Heading C1C In the activated sludge process, oxygenation is effected with pure O 2  or O 2 -enriched air in at least two stages, between any two consecutive stages of which the mixed liquor is treated to remove dissolved gases, e.g. by agitation, pressure reduction or purging with air or N 2 , optionally followed by addition of soda or lime. In the oxygenation stages the ratio of liquid volume to supernatant gas volume is preferably at least 20 : 1. The recycling sludge may be reactivated by oxygenation with air, O 2  or O 2 - enriched air. In Fig. 5, influent is fed via pipes 4A and 4B to oxygenation stages 1 and 3 which are interconnected via purger 2 and oxygenation gas pipe 7. Sludge from settler 9 is recycled via pipe 11. Other embodiments include three oxygenators and two purgers.
Patent GB-119103-A (GB)
Title: Improved Shaving Brush.
Inventor: SCOTT ROBERT
IPC: A46B11/02
Filed: 1917-10-01
Abstract: 119,103. Scott, R. Oct. 1, 1917. Reservoir brushes. - In shaving-brushes of the kind having a hollow handle for the reception of a soap charge, which is expressed by means of a plunger k forced inwards by a finger inserted through the ends of the handle, the soap charge or refill m is contained in an open-ended cardboard cylinder n. The cylinder is inserted within the handle a by unscrewing the same from the brush head d.
Patent GB-1218934-A (GB)
Title: An arrangement for cleaning gratings, gates, grids, and the like
Inventor: OSTNAS LARS-OLOF LENNART
IPC: F23J3/00
Filed: 1968-03-25
Abstract: 1,218,934. Reciprocating cleaning - rakes. TOLU AB. 25 March, 1968 [28 March, 1967], No. 14211/68. Heading BID. A grating 2 is cleaned by a rake 5 which delivers the detritus to a higher place 4. The rake arm is articulated at 6c, the upper arm 6b being guided (e.g. by a roller 17) in a vertical guide track 9b having a horizontal run 9c and being driven by e.g. a rack-and-pinion 16, 15. When, as shown in ghost outline, roller 17 enters horizontal run 9c, arms sections 6a, 6b are caused to pivot relative to each other; hence the rake 5 is accelerated as it approaches the detritus collector 4. As described, a scraper 28 cleans rake 5 during the final movement phase. Roller 19 then actuates a switch, reversing drive motor 13 (located as shown in Fig. 2, i.e. travelling with roller 19); hence rake 5 descends, being biased away from grating 2 by a spring 22, to the ghost outline position at the foot of Fig. 1. In another embodiment (Figs. 3, 4, not shown) the rake arm is secured to a chain-reciprocated carriage (110) driven by sprockets (118), and the angle of disposition of the rake is controlled by a counterpoise roller (106f) engaging a guide (140-142) which gives way on the downstroke.