baber/WOPTO huggingface dataset:
Patent GB-306398-A (GB)
Title: Improvements in the control of electrically driven compressors
IPC: F04B49/02
Filed: 1929-02-13
Abstract: 306,398. Swiss Locomotive & Machine Works. Feb. 18, 1928, [Convention date]. Starting and stopping pumps automatically.- The driving motor of an electrically driven. compressor is automati. cally cut out at a predetermined maximum pressure in a storage vessel and cut in at a predetermined minimum pressure by a piston-operated switch 10, the supply of pressure-fluid to which is controlled by independent inlet and outlet valves 1, 6 actuated by the direct action of the fluid pressure and located in a conduit having a connection 7 to the cylinder of the piston 8. The pressure-fluid coming from the storage vessel by a pipe 3 opens the inlet valve 1 and, closing the outlet valve 6, passes by the conduit 7 to the piston 8 which thereupon opens the switch 10. When the pressure falls slightly the inlet valve 1 closes but the piston 8 remains exposed to the pressure, fluid by a branch pipe 2 until the pressure falls sufficiently for the outlet valve 6 to open, whereupon. the piston moves to close the switch 10. The pipes 2. 7 are formed with restricted passages. Screws 14, 15 permit the adjustment of the pressures at which the valves 1, 6 open.
Patent GB-1131892-A (GB)
Title: Method and apparatus for measuring changes in borehole fluid pressures
Inventor: JOHNSON CARLTON ROBERT
IPC: E21B47/06
Filed: 1966-02-03
Abstract: 1,131,892. Pressure gauges. ESSO PRODUCTION RESEARCH CO. Feb. 3,1966, No. 4815/66. Headings G1L and G1N. Apparatus for measuring changes in ambient pressure, particularly in bore holes, comprises a source of fluid at a reference pressure, means for varying the fluid content of the reference source to eliminate any pressure differential between the source and the ambient and means to measure the variation of fluid content to determine the change in ambient pressure. In Fig. 1, the means for detecting the pressure differential comprises a capillary tube 13 containing opaque and transparent fluids with interface 36, connected respectively to bellows 15 and reference pressure cell 10. Bellows 15 may be situated in the bore hole and any change in pressure results in movement of the interface which controls the incidence of light on the photoelectric cells 21, 22 which control reversible motor driven pump 24 to increase (or decrease) the supply of liquid in the reference cell system to restore the interface to its original position. Valves 31, 32 and 33, 34 operate alternatively so that the pump may operate continuously to increase (or decrease) the fluid content of the reference source. The position and number of strokes of the pump is electrically recorded to indicate the amount of fluid-flow needed to restore equilibium and therefore the change in pressure experienced by bellows 15. In an alternative embodiment, Fig. 5 (not shown) the pressure differential is indicated by a liquid-gas interface in a meniscus forming tube. In a third embodiment Fig. 6 (not shown) a transducer sonde is used to detect differential pressure changes, the sonde output controlling the quantity of gas in the reference source by means of valves leading to either a source of higher pressure gas or to an exhaust.
Patent GB-1035483-A (GB)
Title: Fertilizer manufacture
Inventor: BOOTH DONALD HAROLD
IPC: C05B1/02
Filed: 1962-02-08
Abstract: A compound fertilizer comprising ammonium nitrate, monoammonium phosphate, and condensed phosphotes is produced by treating with gaseous NH3 an acid mixture containing at least phosphate, nitrate, and hydrogen ions and water; reducing the water content to below 2% by passing air or inert gas through at least a part, to form a homogenous liquid melt at less than 170 DEG  C.; and granulating. The acid mixture may contain H3PO4 (e.g. 68-77% superphosphoric), HNO3 (concentrated), NH4NO3, H2SO4 and/or (NH4)2SO4, and may be ammoniated in tubular reactors to a pH of 4; or in the presence of the liquid melt contained in stirred tank reactors with overflow means for removing product (the melt being initially formed by adding monoammonium phosphate or H3PO4 and NH3 to molten NH4NO3), a portion being removed to reduce the water content and returned.  The liquid mixture may be at or near its boiling point and have (1) N:P2O5 ratio of 0.64-2.1, (2) boiling point above 164 (N: P2O5)-0.11  DEG C. and (3) water content between 2 and (Z+4N: P2O5) per cent, as described in Specification 4834/62; and the gas (heated to maintain the temperature above 15 DEG  C.) is passed through, in amount from 5-20%, when the pH is above 1.5.  The melt should contain at least 10% monoammonium phosphate, and less than 20% (NH4)2SO4.  It may be granulated by spraying into a gaseous cooling medium or by discharging on to a drum or belt cooler from which it is removed and broken up, the fines being returned to the melt, together with other fertilizer materials which may be included, e.g. K salts, (NH4)2SO4, urea, or superphosphates.
Patent GB-890328-A (GB)
Title: Improvements connected with steelyard type weighing apparatus
Inventor: WOLVERSON OLIVER ARTHUR GERALD
IPC: G01G1/26
Filed: 1958-02-14
Abstract: 890,328. Steelyards. AVERY Ltd., W. & T. March 9, 1959 [Feb. 14, 1958], No. 4837/58. Class 143. In a steelyard apparatus comprising a housing 3 having a guide rod 4 carrying a horizontally adjustable poise weight 5, a member 11 carrying the housing fulcrum knife edge 12 and the load supporting knife edge 13 is secured to the housing by means of a resilient U-shaped stirrup 10 the horizontal limbs 10a, 10b of which are bolted respectively to the housing 3 and member 11, said limbs being adjustably spaced at their free ends by a screw-threaded post 14 whereby the member 11 may be adjustably oriented with respect to, and in the plane of, the housing 3 to vary the face of the steelyard. As shown the poise weight 5 has a manipulating arm 7 extending to the exterior of the housing and gravitates into engagement with a notched bar 6 fixed to the housing parallel with the rod 4, the arm 7 passing over a graduated scale 8 which is carried by the housing and incorporates a sliding minor poise weight 9. The end of the housing opposite the poise weights carries an adjustable balance weight 16a, and a vertically adjustable gravity ball 16b is carried beneath the fulcrum 12.
Patent GB-1030071-A (GB)
Title: Improvements in or relating to magnetic amplifiers
IPC: H03F9/04
Filed: 1964-02-05
Abstract: 1,030,071. Magnetic amplifiers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 5, 1964 [Feb. 8, 1963], No. 4851/64. Heading H3B. A magnetic amplifier comprises a winding 2, on a saturable core, connected in series with a rectifier 3 and a load 4 to an alternating voltage source 1, the winding being coupled to a capacitor 8 to form an oscillatory circuit resonant at the supply frequency, the load current being controlled by a control circuit causing damping of the oscillatory circuit. The magnetic core material preferably has a non- rectangular hysteresis loop. It is ensured that the voltage v across the oscillatory circuit is less than the supply voltage u so that rectifier 3 remains cut-off. The magnitude of voltage v is adjusted by the control circuit which may be a transistor 9 in series with a rectifier 7. Source 5 may provide a constant or a pulsating current. Alternatively, control may be exercized by means of a variable resistor, which may be light- or temperature-sensitive, an adjustable voltage source in series-opposition to rectifier 7 (Fig. 7, not shown), a vacuum or gas-filled tube (Fig. 8, not shown), or a photoelectric cell. If a valve is used rectifier 7 is unnecessary. The damping may be applied to, and capacitor 8 may be connected to, the whole or a part of winding 2, or to a separate winding on the core. Part of the supply voltage may be fed back to the control circuit to compensate for losses and permit negative saturation to be reached. The control circuit may include two transistors in parallel controlled by separate input signals (Fig. 12, not shown). Two of the circuits shown in Fig. 5 may be connected to provide a full-wave output, using a single transistor control circuit (Fig. 13, not shown), and a three-phase system is also described using separate transistors for the three phases (Fig. 14, not shown). The energy supplied to capacitor 8 may be increased by passing current through a separate coil on the core in the direction opposite to that corresponding to the conduction direction of rectifier 3.
Patent GB-328706-A (GB)
Title: Improvements in the dyeing of regenerated cellulose materials
IPC: C09B35/06
Filed: 1929-02-13
Abstract: 328,706. Imperial Chemical Industries, Ltd., and Brightman, R. Feb. 13, 1929. Disazo dyes.-Regenerated cellulose materials are dyed in level shades by the application of disazo dyes obtained by coupling tetrazotized 1: 5- diaminonaphthalene with 1 mol. of a phenol, a naphthol, a carboxylic derivative of a phenol, a naphthol sulphonic acid, or an aminonaphtholsulphonic acid, and 1 mol. of another coupling component, excluding 2:5: 7-aminonaphtholsul. phonic acid or a derivative thereof either as first or as second component. The dyestuffs preferably contain at least one sulphonic group for each naphthalene nucleus in the coupling components. The following examples are specified :-(1) 1: 5- Diaminonaphthalene is tetrazotized and coupled (alkaline) with 1 mol. of 1: 8-aminonaphthol 2: 4-disulphonic acid and 1 mol. of #-naphthol; the product dyes viscose silk bright blue. (2) Viscose silk is dyed a rich red shade in a bath containing Glauber's salt, soap, and the dyestuff obtained by coupling tetrazotized 1 : 5-diaminonaphthalene with 1 mol. of salicyclic acid and 1 mol. of 2-methylaminonaphthalene-7-sulphonic acid. A table is also given showing the shades obtained on viscose silk with the dyestuffs from tetrazotized 1: 5-diaminonaphthalene and the following components, all aminonaphtholsulphonic acids being coupled alkaline :-1: 8-aminonaphthol-2: 4-disulphonic acid (2 mols.); 1: 5-naphtholsulphonic acid (2 mols.); salicylic acid and 2 : 8-aminonaphthol-6-sulphonic acid or 2-phenyl. amino-8-naphthol-6-sulphonic acid or 1 : 8-aminonaphthol-2: 4(or 3 : 6)-disulphonic acid; o- or pcresotinic acid and 2: 8-aminonaphthol-6-sulphonic acid: 1: 4-naphtholsulphonic acid and 2 :8-aminoaphthol-6-sulphonic acid or 1: 8- aminonaphthol-4-sulphonic acid; resorcinol and 1 : 8-aminonaphthol-2 : 4-disulphonic acid. Specification 9287/00 is referred to.
Patent GB-346901-A (GB)
Title: A multiple use instrument or apparatus for gymnastic purposes
IPC: E06C7/48
Filed: 1930-02-13
Abstract: 346,901. Gymnastic apparatus. RAFFO, A., 3, Via Ravaschieri, Chiavari, Italy. Feb. 13, 1930, No. 4883. [Class 132 (i).] Multiple exercise apparatus comprises a ladder with round pegs 2 having hinged to its upper end a rectangular frame 6, which may be held at any angle to the ladder up to a right-angle by means of the rack sectors 11 and the pins 15, and which may be locked at the right-angle position by means of the knuckle arms 10. The lower ends of the ladder and the outer ends of the frame are provided with rubber non-slip devices 4, 8. The pegs are in three groups, at the ends of the ladder and at the lower centre, movable exercise staffs 18 to which rope handles 20 may be attached being disposed in the upper and greater space. Planks 16 on either side of the ladder cover the middle portions of the upper and central groups of pegs, and on the two lowermost pegs on the side remote from the frame is fixed a plank 21. A foot-rest 23, provided with an anklespring 24, may be placed at the appropriate height in holes 22<1> in metallic squares 22 projecting in the direction of the frame at the foot of the ladder.
Patent GB-621347-A (GB)
Title: Improvements in or relating to worktables for supporting apparatus adapted to be driven by an electric motor
IPC: D05B75/02
Filed: 1947-02-20
Abstract: 621,347. Furniture combinations and frames. LOWE & CO., Ltd., R. H. and STOTT, C. Feb. 20, 1947, No. 4952. [Classes 52 (ii) and 52 (iii)] A table such as for sewing machines comprises two metal side frames interconnected by one or more transverse bars 13 upon which a bracket 20, 21 for an electric motor 19 may be clamped. The side members 11 each comprise two vertical parallel tubular members interconnected by tubular pieces 12 while the upper and lower parts of the vertical members are cranked to form members 11 a, 11b. The side members are interconnected at top and bottom by strip members 14 upon the upper of which the table top 18 is mounted. A gusset plate 15 forms part of the frame upon which plate a power transmission arrangement 16 is adjustably mounted.
Patent GB-216197-A (GB)
Title: Improvements in stands for coal cutters and the like
IPC: E21C25/64
Filed: 1923-02-20
Abstract: 216,197. Armstrong, Whitworth, & Co., Ltd., Sir W. G., Wilson, R. W., and Hedley, R. F. H. Feb. 20, 1923. Percussive drills.-A coat-cutting or like machine, particularly of the type driven by compressed air, is bolted to a socket q carried by a bracket w and adjustable thereon about a horizontal axis by means of a worm v. The bracket also carries a second worm n by means of which it is adjusted about the vertical column a on which it is raised and lowered by means of a rack d and pinion e. The top of the column carries a screw jack h adjusted by a pawl and ratchet l.
Patent GB-345047-A (GB)
Title: Improvements relating to the casting of metals or alloys
IPC: B22D21/00
Filed: 1930-02-14
Abstract: 345,047. Casting aluminium. BRITISH & DOMINIONS FERALLOY, Ltd., 40, Grosvenor Gardens, London, and SYKES, C., 12, Derbyshire Lane, Stretford, Manchester. Feb. 14, 1930, No. 5028. [Class 83 (i).] Casting processes; mould materials.-The operation of casting aluminium, or alloys wholly or chiefly of iron with aluminium, is carried out in an atmosphere containing carbon and chlorine. This atmosphere may be produced from a gas, a liquid, such as trichlorethylene, or a solid, such as chlorinated pitch. The material may, for instance, be introduced into the mould before and, if desired, during casting or a mould, coated with chlorinated pitch, may be used. Iron containing 10 to 20 per cent of aluminium may be cast in this way. The Provisional Specification refers to Specification 322,446, [Class 82 (i), Metals, Extracting uc.]
Patent GB-1487495-A (GB)
Title: Manufacture of organopolysiloxanes
IPC: C08F2/12
Filed: 1975-02-06
Abstract: 1487495 Production of grafted organopolysiloxanes CONSORTIUM FUR ELEKTROCHEMISCHE INDUSTRIE GmbH 6 Feb 1975 [7 Feb 1974] 5103/75 Heading C3G A modified organopolysiloxane is produced by grafting an olefinically unsaturated monomer on to an organopolysiloxane by means of a free radical initiator in the presence of 2 to 20% by weight, relative to the weight of the polymerization components, of a liquid that is a non-solvent under the polymerization conditions for both the initial and modified organopolysiloxanes, that is inert toward the polymerization components and that has a boiling point of not more than 100 C. at 760 mm. Hg. The inert liquid may be water, methanol or a saturated aliphatic halogenohydrocarbon. Examples are given in which a hydroxyl-terminated dimethylpolysiloxane is grafted with styrene and n-butyl acrylate in the presence of water. The product is cured using ethyl polysilicate and a dibutyl tin derivative of cyclic C 9  to C 11 -carboxylic acids.
Patent GB-570371-A (GB)
Title: Improvements in radiators
IPC: F28D1/03
Filed: 1943-03-31
Abstract: 570,371. Radiators. SPENCER, R. March 31. 1943, No. 5132. [Class 64 (iij)] In radiators for internal combustion engines comprising pairs of radiator plates 1, 2 and 5, 6 alternating with pairs of gill plates 3, 4, the radiator plates of each pair are united together at their vertical edges and so shaped as to provide a clear straight-line water passage f therebetween at right angles to horizontal air passages L, m which are formed respectively between each pair of gill plates and between each gill plate and the adjacent radiator plate. Figs. 2 and 4 respectively are horizontal and vertical sections through the radiator, and, as shown, each radiator plate is formed at opposite edges with undulations b which lie wholly on one side of the general plane of the plate, and, on the same side of the plate and in alignment with the undulations, is provided with ribs or corrugations c to project into the water spaces f and, between each two of these ribs c, two further ribs d which project on the opposite side of the plate, said ribs c, d being of a depth less than one-half of the thickness of the water space f and short spaces e, or ribs with parts of reduced depth, being left between the ribs and undulations. Similarly each gill plate is formed with undulations g along its horizontal edges and is provided with ribs k which are aligned with said undulations but of less depth and reduced at their ends and middle. Pairs of radiator plates are assembled with the undulations b interfitting closely together and pairs of gill plates with the undulations opposed, the ribs k of the latter plates being received in recesses formed between pairs of ribs d on the radiator plates, this assembly of plates being thereafter secured together by dipping in a solder bath.,
Patent GB-970813-A (GB)
Title: Electrophotographic reproduction
IPC: G03G17/02
Filed: 1963-02-08
Abstract: Visible images are produced cathodically on a photoconductive layer that has been or is being exposed to light by passing D.C. through a dilute aqueous electrolyte solution comprising iron ions and a material electrolytically decomposable to produce sulphide ions in contact with the photoconductive layer supported by an integral or separate conductive layer serving as cathode.  The iron compound of the electrolyte may be ferrous acetate, ferrous or ferric bromide, chloride, sulphate, or thiocyanate, ferrous thiosulphate, or ferric oxalate.  The material decomposable to produce sulphide ions may be a water-soluble thiosulphate, e.g. of Na, K, NH4, Ca, Mg or Fe++, the latter serving if desired also as the iron salt, mercaptosuccinic acid, thiourea, thiouronium compounds, isothiouronium compounds, thiosemicarbazides, 2-mercaptothiazoline, 2-thiophenic carboxylic acid, or polymeric sulphides such as 2-hydroxyethylamino-or morpholino-oligoethylene containing on average 1.4 or 1.7 ethylene sulphide groups per molecule.  Typically a dye sensitized photoconductive zinc oxide layer in an insulating binder on a conducting support was exposed and the resulting image was developed using an electrolyte containing 0.7% by weight ferrous sulphate heptahydrate plus 1.5% by weight crystalline sodium thiosulphate pentahydrate to form a black iron sulphide image.  An ionizable nickel salt such as the chloride, bromide, chloride, nitrate, or sulphate and an anti-shorting agent such as magnesium or calcium acetate may also be included in the electrolyte, to give a black image, while for the production of coloured images the electrolyte may also contain salts of Sb, Ar or Cd, Co, Mn, Mg, producing sulphide images of reddish-orange, yellow, brown, green, red tints respectively. The electrolyte solution may be applied to the photoconductive layer by a roller, sponge, or brush, may be poured over the surface, or the layer may be immersed in a tray containing the solution.  The anode may be a stationary rod, plate, or transparent electrically conductive surface film or may be movable, e.g. the member applying the electrolyte. The voltage applied between the electrodes may be from 40 to 70 volts.  An A.C. source may be used if the photoconductive layer exerts a rectifying action.
Patent GB-627334-A (GB)
Title: Apparatus for pneumatically conveying cotton or other fibre
IPC: B65G53/42
Filed: 1947-02-22
Abstract: 627,334. Pneumatic conveyers. TWEEDALES & SMALLEY (1920), Ltd., and PILKINGTON, N. Feb. 22, 1947, No. 5235. [Class 78 (i)] Pneumatic conveyer for cotton fibre includes feeding hopper A of a junction structure B, the hopper being divided by partition C into two longitudinal compartments BDF and EG lying side by side (perpendicular to the plane of the paper) and is characterised in that each compartment is connected at one end to the atmosphere and at the other end to a suction pipe leading to a lap-forming junction such that the two flows of cotton are in opposite directions (in the plane perpendicular to the paper). As shown, cotton falls into hopper A, passes through junction B into one or both of compartments D and E, and passes out through pipes F and G in parallel but opposite directions each to a lap-forming machine. Accumulation of cotton in the latter machine operates control plates, which operate the solenoids J and H and thus open or close doors L or K. Thus, when there is too much cotton in the lap-forming machine of pipe G the door L swings over to cause the cotton which is flowing through both pipes to pass solely into pipe F.
Patent GB-585927-A (GB)
Title: Improvements in or relating to variable electric transformers
IPC: H01F29/10
Filed: 1944-03-21
Abstract: 585,927. Transformers and inductances. MULLER, H. March 21, 1944, Nos. 5241 and 25695. [Class 38 (ii)] A shell-shaped magnetic core for a transformer, choke, relay or the like comprises a part carrying the main windings and having at least two magnetic circuits which are energized symmetrically, and a bridge-like part forming a shunt magnetic circuit carrying a control winding. A core 10 of a shell-type transformer carrying the primary and secondary windings on a central limb 12 has slidably located against its reduced yoke 11 a magnetic shunt bridge 15 carrying a control winding 16 on a part reduced in cross-section by the formation of a notch 15a. The control coil may be connected in series with either primary or secondary or across the secondary and provided with tappings for use as a potential divider (Fig. 2, not shown). When the arrangement is symmetrical, the control coil acts mainly as a choke to limit overload currents, but movement of the magnetic shunt one way or the other will vary the flux distribution through the core and thus increase or decrease the output. Figs. 6, 7 show a modification having two slots 22 cut across the yoke 11 in which pieces 23 slide to vary the reluctance of the main magnetic circuit, thus diverting the flux more or less through the shunt path. Flux may be diverted through the shunt bridge by slots cut in the yoke 11, Figs. 3, 8 (not shown), and the complete absence of yoke 11, Fig. 4 (not shown), or the bridge may be integral with the yoke 11 which is separated from the central limb 12 by a gap bridged by a movable member, Fig. 5 (not shown).
Patent GB-161047-A (GB)
Title: Improvements in or relating to covers for pneumatic tyres
IPC: B60C5/00
Filed: 1920-02-21
Abstract: 161,047. F.E.C.I.T Fabbricazione Esportazione Copertoni Imperforabili- Torino. Feb. 21, 1920. Addition to 142,791. Jackets and covers; tyre attachments to rims. -The leather cover 2, which is stitched to a canvas backing 2<1> and fitted with hooks 5 to engage the rim flanges, is also stitched at 12 to a canvas liner 1 having beaded edges 10. Leather strips 9, 11, and studs 7 may be fitted at the tread.
Patent GB-163724-A (GB)
Title: Improvements in landing lights for use on aeroplanes
IPC: B64D47/04
Filed: 1916-04-13
Abstract: 163,724. Holt, H. E. S. Addition to 238/15, [Class 9 (ii), Torpedoes &c.] Drawings to Specification. Reflectors.-A hemispherical metal shield which also acts as a reflector is fixed over a tube carrying an acetylene burner.