baber/WOPTO huggingface dataset:
Patent GB-831133-A (GB)
Title: Improvements relating to thermionic cathodes
IPC: H01J9/04
Filed: 1956-06-25
Abstract: 831,133. Cathode materials and processing. GENERAL ELECTRIC CO. June 25, 1956 [June 28, 1955], No. 19606/56. Drawings to Specification. Class 39(1). A thermionic cathode consists of a metal base, a porous layer of metal particles alloyed together and to the base by titanium or zirconium, and an emissive coating impregnating and overlying the porous layer. If the emissive coating is an alkaline earth carbonate, the base metal may suitably be nickel, iron, or platinum, and the porous layer may be formed from a powdered mixture of one of these three with titanium or zirconium (or the hydrides thereof). If the emissive coating is thorium oxide, which involves a higher operating temperature, the base metal may more suitably be tungsten or tantalum, and the porous layer formed from a powdered mixture of tungsten with zirconium. The alloying is carried out by vacuum firing, and suitable times and temperatures are given for various combinations of materials. The emissive material, suspended in a binder, is then painted on. The titanium or zirconium also acts as a getter.
Patent GB-1494550-A (GB)
Title: Transistor amplifier
IPC: H03F3/30
Filed: 1975-05-09
Abstract: 1494550 Transistor amplifier SONY CORP 9 May 1975 [21 May 1974 (2)] 19668/75 Heading H3T In a transistor amplifier including a triode-like FET (Figs. 1-4, not shown) the D.C. bias current is stabilized against supply fluctuation by an independently powered transistor receiving the signal at its input terminal and with one of its output terminals connected to the FET gate, a proportion of the FET supply voltage being led to the other output terminal to modify the FET gate potential in order to stabilize its current. In a pushpull output stage using complementary FET's Q 1 , Q 2  in common series mode with drains supplying a load impedance (not shown) at 16, complementary bipolar stages Q 7 , Q 8  and Q 3  Q 4  supply a signal from a pair of differential preamplifier stages combining input signal 13 and negative feedback fed via R 11 . The FET bias current is adjusted by varying via VR2 the proportion of the D.C. drop across decoupled diode chain D1 to appear across the bases of Q 3 , Q 4 . Compensation for independent fluctuation relative to ground of V +cc2  and V -cc2  is achieved if quoted relationships between R, and R 7 , R 2  and R 8  and the amplification factors of the two FET's are satisfied. Compensation for simultaneous equal fluctuations of the same polarity or V +cc1  and V -cc1  can also be achieved if R 1  and R 9 , R 2  and R 10  are respectively equalized. To reduce the HF losses due to the gate capacitance of the FET's, emitter follower stages may be interpolated between Q 3 , Q 4  and the FET's Q 11 , Q 12  (Fig. 9, not shown) which are in this embodiment connected by their sources to the load, giving low output impedance as a common drain amplifier.
Patent GB-256648-A (GB)
Title: Improvements in double-acting internal combustion engines
IPC: F02B75/02
Filed: 1926-08-10
Abstract: 256,648. Sommer, A., Hood, A. G., and Sterling, E. R. Aug. 10, 1925, [Convention date]. Pistons; cooling; connecting-rods.-In a double-acting internal - combustion engine wherein the hollow piston works over a fixed abutment 14, the piston head is cooled by water circulating in channels formed in the skirt. The connecting-rod end is forked for attachment to the piston skirt.
Patent GB-295818-A (GB)
Title: Improvements relating to the liquid fuel supply arrangements of internal combustion engines
IPC: F02M37/02
Filed: 1927-07-25
Abstract: 295,818. Higginson, J. July 25, 1927. Vacuum apparatus. -In vacuum fuel feed apparatus for internalcombustion engines, the sensitive valve f between the vacuum chamber and the engine induction pipe is provided with loaded means, such as the spring-pressed member j, which limits the opening movement of the valve under low and medium vacuum conditions, and allows .it under high conditions, by the upward movement of the member j, to seat on a second seat i, thereby reducing the suction connection between the vacuum chamber and the induction pipe to a small port n. Specification 138,444 is referred to.
Patent GB-985073-A (GB)
Title: Improvements in or relating to ferromagnetic pot core assemblies
Inventor: CHAPMAN JACK
IPC: H01F17/04
Filed: 1963-05-17
Abstract: 985,073. Inductors. MULLARD Ltd. Feb. 24, 1964 [May 17, 1963], No. 19730/63. Heading H1T. A ferromagnetic pot-cone assembly comprises windings 2 embedded in a moulded coil member 1 and positioned by struts 3 within a container 4 which also locates the slotted pot-cone parts 8 and 9. The coil member, struts and outer container are moulded as an integral structure such that the terminals 7 and leads 6 are embedded. Resilient clamping means 14 (of beryllium copper) and plate 16 secure the potcone parts. A tuning slug can be provided for the pot-cone.
Patent GB-820428-A (GB)
Title: Improvements relating to the filling of containers
IPC: B65B3/18
Filed: 1957-06-24
Abstract: Bubbles of gas are removed from the walls of a container, i.e a jam, marmalade or syrup container, by treating the wall of the container to ultrasonic vibrations, the treatment being performed while the material is at such a temperature that bubbles of the gas can rise through the material by their own buoyancy.  The ultrasonic vibrations may be transmitted to the wall of the container by means of a gas or a liquid.  Preferably the container is immersed in a trough of water in which is immersed a transducer emitting ultrasonic vibrations.  The Provisional Specification describes the treatment of materials by a combination of at least two methods including centrifuging; scrubbing of the inner walls, and ultrasonic vibration treatments.
Patent GB-1426933-A (GB)
Title: Process and apparatus for the qualitative and quantitative analysis of solid materials
IPC: G01N7/16
Filed: 1973-04-26
Abstract: 1426933 Determination of volatile fraction from solids; determining moisture content of solids CARRIERES ET FOURS A CHAUX DUMONT-WAUTIER 26 April 1974 [26 April 1973] 19786/73 Headings G1B and G1S Volatile components contained in a solid are determined qualitatively and quantitatively by a process wherein a sample of known weight of the solid is introduced into a first enclosure 1 of known capacity, the sample is heated by means 18 to a temperature beyond that at which the volatile component vapourizes, the vapourized volatile component becomes distributed between the first enclosure 1 and a second enclosure 20 which has previously been brought to a constant temperature which is higher than the liquefying temperature of the volatile component and the pressure increase occurring in the system is measured by means 16. The apparatus may include absorbent container(s) 10 located between the first and second enclosures, for use in absorbing gases evolved from the solid and not to be determined. An Example relates to determination of the calcium carbonate content of quicklime, and there is reference to determinations on solid materials in lime burning, cement, plaster and road-building industries, and to determination of the water content of solids.
Patent GB-381923-A (GB)
Title: Improvements in or relating to optical-projection apparatus and projection screens
IPC: G03B21/13
Filed: 1931-07-09
Abstract: 381,923. Optical-projection apparatus. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A., BULL, R. A., 5, Duppas Hill Road, Croydon, and SIMPSON, G. A. G., 20, Milton Mansions, Queen's Club Gardens, London. July 9, 1931, No. 19806. [Class 97 (i).] A translucent projection screen forms the rear wall of a vehicle and is provided with interchangeable masking devices or with an adjustable mask, so that, in conjunction with a projector within the vehicle which is adjustable in position, or has interchangeable lens systems or an adjustable; lens system, pictures of different sizes and intensities of illumination may be displayed. The screen may be provided with a standard mask 3; a smaller mask 4, in parts connected by hinges 6, may be secured over the mask 3 by wing nuts 5 when desired. The projector may be mounted on a tramway and be adjustable in position by a rack and pinion &c. The projector may, alternatively, have a lens of variable focal length and its operating member may be coupled to an operating member for adjustable blinds forming the mask for the screen.
Patent GB-983237-A (GB)
Title: Improvements in and relating to conveyor plants
IPC: B65G23/42
Filed: 1961-06-01
Abstract: 983,237. Driving devices for step-by-step conveyers. J. W. LUDOWICI. June 1, 1961 [June 1, 1960], No. 19879/61. Heading B8A. Carriages 50 (Fig. 1) are carried by rollers 8 which run along rails 6, and are connected by links 10<SP>1</SP> to form an endless band. They are moved forwards step-by-step by pushers 9 which are impelled by cylinder 2, the cylinder being connected to lever 1 pivoted at its upper end to a fixed point and connected at its lower end to lever 4. Lever 4 carries the pushers 9 at its end and also has roller 5 which engages with the upper surface of rail 6 so as to guide the movement of the pushers 9. The pushers 9 engage the ends of rods 10 of the carriages 50 to give the system a step-by-step movement. The frame 12, Fig. 2.-The cylinder and system of levers may be carried by triangular frame 12 which rests on top of rail 6, the roller 5 running along the horizontal member of the frame.
Patent GB-743744-A (GB)
Title: Improvements in or relating to automatically electrically wound spring driven time pieces
IPC: G04C1/06
Filed: 1953-07-17
Abstract: 743,744. Dynamo - electric machines. UHRENFABRIK SENDEN GES. July 17, 1953 [July 18, 1952], No. 19909/53. Class 35. [Also in Group XVIII] An electric motor of an electrically wound spring - driven clock (see Group XVIII) comprises two permanent magnets 4, 5, Fig. 1, forming the stator and a rotor formed by flat coils 8, 9, 10, Fig. 4, embedded in a disc 6 of insulating material and in star or delta connection.
Patent GB-147860-A (GB)
Title: Improvements in universal coupling members and method of producing the same
IPC: F16D3/205
Filed: 1920-07-09
Abstract: 147,860. Emerson, V. L. Feb. 10, 1916, [Convention date]. Joints; componnd forms.-Universal joints are made by joining a hard finished part and a soft workable part by welding in which the heat is localized. A drawn sheet-steel shell X is roughly ground, heat-treated, hardened, and ground accurately at 4, 5, 6, and 7. It is then mounted in a face-plate 20 having a shank 21 and hand nut 24 for securing a hub Y, made from bar stock, in contact therewith for welding at 28<1> by a soft iron electrode 25 preferably connected to the positive end of a circuit, the negative end being connected to a brush 27. The end of the hub is preferably shouldered down to enter the end cf the shell, and flat and concave bevels 11, 17 may be formed on the parts to facilitate welding. The hub, being soft, can be key-slotted &c. as and when required for securing to its shaft C, Fig. 6, and the shell X is adapted to engage rollers or balls J on a voke F mounted on a shaft G. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the application of the method to articles other than universal joints; this subject-matter does not appear in the Specification as accepted.
Patent GB-757312-A (GB)
Title: Improvements in and relating to pipe or like couplings
IPC: F16L37/367
Filed: 1952-08-07
Abstract: 757,312. Pipe couplings. AEROQUIP CORPORATION. Aug. 7, 1952 [June 6, 1952], No. 19942/52. Class 99(1). In a coupling comprising two parts 10, 12 each of which contains a flat valve sliding on a flat surface, sealing means being provided between the valve and the flat surface, and the parts being locked in the coupled position by means of a latch 80, uncoupling is initiated by actuation of the latch. As shown, the part 10 consists of a rectagular block 14 having a guideway 16 for a valve 18 associated with a port 20 surrounded by a sealing ring 102, the part 12 consists of a valve 48 having a guideway for a rectangular block 55 a port 62 in which is surrounded by a sealing ring 64, and the latch comprises side plates 82 hinged at 78 to the block 55 and joined by a cylindrical end 84 and angular portions 86. Fig. 4 shows the parts uncoupled, the ports being closed and the valve 18 being held in position by conical pins 34 mounted in conical holes 36 in the valve and engaging spherical depressions 32 in the block 14, and the valve 48 having similar pins 74 engaging depressions 68 in the block 55. On bringing the parts 10, 12 together and sliding the block 55 to the left, the pins 34, 74 are forced out of the depressions 32, 68 and into depressions 58, 30 respectively so as to connect the valve 18 to the block 55 and the valve 48 to the block 14, the valve 18 is pushed to the left and both ports are opened. Meanwhile, the latch has snapped over lugs 42 and the parts 86 engage behind walls 44 of the lugs to lock the parts 10, 12 together. To uncouple, the latch is swung downwardly, noses 98 on the plates 82 take up clearance between the noses and lugs 100 on the valve 48 whereupon further pressure on the latch breaks any adherence between the sealing ring 64 and the block 14. When the latch is released from the lugs 42, the parts 10, 12 may be separated. Sealing strips provide a fluid seal between the abutting surfaces of the parts 55, 18 and 48, 14 respectively. Specification 757,314 is referred to.
Patent GB-577483-A (GB)
Title: Improvements in apparatus for drying grasses and the like
IPC: F26B17/26
Filed: 1944-10-17
Abstract: 577,483. Drying grasses &c. NEWMAN, J. E., and KENNEDY, D. S. Oct. 17, 1944, No.20042. [Class 34 (ii)] Apparatus for drying grasses &c. comprises a casing 10 provided with an arched roof 11 and longitudinal dividing walls 12, 13 defining chambers 15, 16 and 46, 56, the mixing chamber 16 having a hot-air or gas-supply flue 18 and a fan 20 mounted in the wall 13 for forcing the hot air &c. into the distributing chamber 15 from whence it is supplied through openings 79, 80 respectively in the wall 12 to the chambers 46, 56 in which the material to be dried is traversed on slotted or perforated inclined planes or guides 24, 28 by spikes 40, 49 which have a circular orbital motion. The opening 79 is larger than the opening 80, so that the greater part of the hot air is delivered to the chamber 46, to which the wet grass is supplied from a chute 38, and the lesser part to the chamber 56 which is traversed by the partly-dried grass from a horizontal transfer portion 25 of the guide 24 to a delivery opening 32 at the discharge end of the guide 28. The roof space over the compartment 46 is preferably divided by a vertical transverse partition 81 to provide an outlet 82 for the escape of highly-moist air after passage through the grass on the guide 24, the remaining air and the air from the chamber 56, which is less charged with moisture, passing over the cover 14 of the chamber 15 and into the chamber 16 where it is mixed with the air or gas supplied by the flue 18. The dried grass may be cooled by the passage of air through the delivery opening 32 or, alternatively, air may be blown through the grass, this air, if desired, being mixed with the hot air in the mixing chamber 16. More than two inclined planes or guides may be employed. Specifications 546,352, [Group XXX], 561,534 and 562,536 are referred to.
Patent GB-685579-A (GB)
Title: Improvements in or relating to apparatus for crumbling mare, pomace and similar substances
IPC: B02C13/18
Filed: 1950-08-14
Abstract: 685,579. Crumbling fruit pulp. USINES TANVEZ, and COUQUET, H. D. J. Aug. 14, 1951 [Aug. 14, 1950], No. 20144/50. Class 59 [Also in Group VI] Apparatus for crumbling fruit pulp comprises a a supporting shaft 5 carried by a press cage 1, the shaft having movable therealong a vertically adjustable frame 25 carrying motor-driven revolvable crumbling members 31. The frame is movable along the shaft by means of a manually rotatable pinion 10 engaging a rack 12 slidable in a groove 13 in the shaft, the rack having operatively connected therewith a cylindrical member 14 which is rotatable relatively to the shaft and lockable thereon e.g. in a horizontal inoperative position or a vertical operative position, by means of a pair of tightening lugs 15. The frame 25 is adjustable vertically by means of a nut thereon engaging a rotatable screwed rod 26 journalled in cross beams 21, 22 connected by means of lugs 19, 20 to upright members 17, 18 carried by the member 14. The crumbling members are driven by a motor 29 and comprise a notched archimedian screw 31 having a pair of screw-threaded portions terminating in toothed wings 33. The crumbling members are adjustable vertically either by means of a nut 38 engaging a rotatable screw-threaded rod 36 or by means of the motor operating through a clutch. The shaft 5 is provided at its ends with shoes 3, 4 resting on the rim of the press cage and movable therearound to alter the position of the shaft.
Patent GB-988073-A (GB)
Title: Metal rolling lubricants
Inventor: EYRES ALAN RICHARD
IPC: B21B45/02
Filed: 1960-06-08
Abstract: In metal rolling the roll-metal interface is lubricated with a circulating dispersion of a petroleum hydrocarbon oil in water, the dispersion being maintained if necessary by agitation during circulation and having a separation temperature between that attained by the dispersion at the interface and the lowest temperature in the circulation system.  Oils specified are solvent refined paraffinic or conventionally refined naphthenic mineral oils of specified viscosities.  Emulsifying agents disclosed are alkylphenol/ethylene oxide condensates and sodium petroleum sulphonates. Optional additives are vegetable oils, sulphurized fats, chlorinated polyolefines, polyethylene glycol esters, fats, phenols, chlorothionophosphates and fatty acids.
Patent GB-1518490-A (GB)
Title: Change-speed gear-box arrangement suitable for construction-work and/or agricultural motor vehicles
IPC: F16H37/04
Filed: 1977-05-13
Abstract: 1518490 Change-speed gearing KLOCKNER HUMBOLDT DEUTZ AG 13 May 1977 [20 May 1976] 20274/77 Heading F2D A change-speed gearbox arrangement comprises a first gearchange section 6 having an input shaft 5, a layshaft 10 and an output shaft 9 drivable at one of five ratios from shaft 5 through various gears and clutches and a second gearchange section 7 comprising shaft 9 as its input shaft and a final output shaft 26, shaft 26 being driven from shaft 9 in reverse (through a shaft 31), or in one of three normal forward ratios or two crawler ratios, the crawler ratios being via planetary gearing 49 and a crawling layshaft assembly 42. The planetary gearing 49 has a ring gear 63 slidable into mesh with a fixed member or into mesh with the planet carrier 61 for the two speeds, the latter action locking-up the planet gearing 49. The planet gearing 49 (Figs. 2 and 3, not shown) is readily interchangeable with a normal layshaft to facilitate change of the gearing ratios and provides a compact assembly. The input is through a double clutch, a P.T.O. being provided.
Patent GB-480675-A (GB)
Title: Improvements in the design of portable diaphragm pumps, as used for the dewatering of pits, pumping of sewage, and like purposes
IPC: F04B53/10
Filed: 1936-08-22
Abstract: 480,675. Reciprocating pumps. WATTS, D. M. (Janes, A. E. J. E.) Aug. 22, 1936, No. 20278. [Class 102 (i)] A portable diaphragm pump comprises a casing divided by a horizontal partition C and the lower part of the casing is divided by a partition B into suction and delivery chambers a, b. Rectangular valve seats are fitted to the partition C upon which flexible valves D, E are held by bolts. The valves are made of rubber or other flexible material interleaved with metal springs. The valve seats are held in place by a bar F engaged by a nut G. The diaphragm H is actuated by a lever O. Specification 475,202 is referred to.
Patent GB-642068-A (GB)
Title: Improvements in and relating to apparatus for contacting gases or vapours with liquids
IPC: B01J19/30
Filed: 1948-07-30
Abstract: 642,068. Treating gases with liquids. HARVEY, D., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 30, 1948, No. 20336. [Class 55(ii)] Laboratory apparatus for contacting gases or vapours with liquids comprises a column containing random-packed elements in the form of gauze rings. the ratio of the greatest horizontal dimension of the column taken at any horizontal plane to the smallest overall dimension of a packing element at that plane being less than two. In the form shown, a laboratory distillation column 1 of 6 m.m. internal diameter is filled with a packing 2 consisting of 4 m.m. x 4 m.m. rings of stainless steel wire gauze. Specification 578,309 is referred to.
Patent GB-422632-A (GB)
Title: Improvements relating to indicating devices in conjunction with electric switches
IPC: H01H9/16
Filed: 1933-07-19
Abstract: 422,632. Two - position indicators. DONOVAN, W., Safuse Works, Northcote Road, Stechford, Birmingham. July 19, 1933, No. 20343. [Class 40 (i)] An indicator comprises a laminated electromagnet b having an armature d which is pivoted at b<3> and has an extension d<1> provided with a pin d<3> which engages a slot e<1> in a U-shaped strap e pivoted to the magnet at e<2> and carrying an indicator f bearing the words ON and OFF. When the armature d is attracted, the indicator is given a magnified movement. The magnet may be energized by a coil (not shown) arranged round the limb band connected in a circuit controlled by a switch, the condition of which is to be indicated.
Patent GB-570353-A (GB)
Title: Improvements in lubricating systems
IPC: F16N39/04
Filed: 1943-12-06
Abstract: 570,353. Electrically heated grease pumps. TECALEMIT, Ltd., and LE CLAIR, C. C. S. Dec. 6, 1943, No. 20399. [Class 39 (iii)] [Also in Groups XXVIII and XXXIV] In a distributing or supply system for lubricants, grease or thixotropic solids the surface layers of the grease in contact with the supply hopper 10 and/or delivery pipe 11 are heated by intermittent pulses or flashes of electricity passed through resistance coils or tape 12, 15 wound around the hopper and pipe and connected to the low tension winding of a transformer 14. The high tension circuit of the transformer may be periodically completed at contacts 19, 20 by the plunger of the supply pump 2 or by a cam on the pump crankshaft or may contain a time switch opening after a predetermined interval. In another construction a number of small electric heater boxes are arranged inside or outside the hopper and the delivery pipe is connected to the low tension winding of the transformer to form a heating element. The grease container and delivery pipes may be of laminated construction to act as heating elements, the laminae in contact with the grease being of higher electrical conductivity than the remainder, for example, the container or pipe may be of copper plated steel.