baber/WOPTO huggingface dataset:
Patent GB-765485-A (GB)
Title: Apparatus for detecting corrosion of metals by gases
Inventor: TAYLOR SAXON JOHN GLENVILLE
IPC: G01N17/00
Filed: 1954-06-23
Abstract: 765,485. Electric tests. IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 15, 1955 [June 23, 1954], No. 18391/54. Class 37. Relates to apparatus for detecting when corrosion of a metal surface occurs by gases in contact with it. The Specification states that the mechanism of corrosion is one of galvanic action set up when contiguous areas of a metal surface possessing different electrode potentials are bridged by a conducting solution. Accordingly an instrument which detects the flow of electric current along these surfaces would indicate when corrosion is taking place. The invention provides an assembly made up of two dissimilar metals or of one metal and an electrically conducting non-metal, one metal of the assembly being the same metal as that of which the metal surface is composed, the other metal, or the non-metal being cathodic to it, the two metals or the metal and non-metal being electrically insulated from one another but arranged sufficiently closely to ensure that they are as nearly as possible equally exposed to the gases, the metal that is the same metal as that of which the metal surface is composed being, if desired, attached to or forming part of the metal surface, and electrical leads attached to each metal or to metal and non-metal for connection to a current-measuring instrument. Examples of suitable metals cathodic to steel and iron surfaces are copper, platinum and gold ; ,graphite is a suitable conducting non-metal cathodic to steel and iron. The cathodic metal or non- metal may be in the form of a disc, plate, strip or band secured to the surface on which it is desired to detect the occurrence of corrosion. In a further embodiment a copper disc is clamped between hollow steel cylinders threaded on a steel rod. Electrical leads attached to the steel cylinders and copper disc are carried through a hollow handle wrapped with asbestos and fibreglass to a suitable microammeter. In use, the assembly is inserted by means of the handle into flue gases for example and allowed to reach constant temperature. The microammeter is observed and whenever current flow is indicated it is known that corrosion is occurring on all steel surfaces exposed to the same flue gases and at the same temperature as the steel cylinders.
Patent GB-833432-A (GB)
Title: Improvements in or relating to indirectly heated cathodes for electron discharge devices and to heater elements therefor
Inventor: MAYO BERNARD JOSEPH
IPC: H01J1/22
Filed: 1955-06-25
Abstract: 833,432. Thermionic cathode constructions. ELECTRIC & MUSICAL INDUSTRIES Ltd. June 11, 1956 [June 25, 1955], No. 18416/55. Class 39(1). [Also in Group XI] A filamentary heater for an indirectly heated cathode, initially bent so as to provide two parallel conductors, is twisted so as to transpose parts of the conductors at one or more positions, Fig. 2, so that in the oppositely disposed portions the current flow in opposite directions. The heater of Fig. 2 may be inserted into a cathode sleeve, or bent round into a spiral, Fig. 3. Fig. 4 shows the spiral heater of Fig. 3 mounted between a concave cathode surface 12 and a rearward cup 8 which is welded to the cathode as at 9, and has a stem 10 passing through a supporting insulator 5. The whole cathode structure is secured inside a shield 13. According to the Provisional Specification such a filament can also be used as a directlyheated cathode.
Patent GB-498804-A (GB)
Title: Improvements in and relating to buckles
IPC: A44B11/24
Filed: 1938-06-21
Abstract: 498,804. Buckles. BURKLE, W. June 21, 1938, No. 18433. [Class 43] The tongue of a buckle is retained in the closed position by a safety device not forming an integral part of the buckle, adapted to cover the free end of the tongue and pivotally or slidably mounted on the side or end of the buckle frame. The device may consist of a U-shaped member 5 pivoting on the end, Fig. 2, or the side, Fig. 4, of the buckle. In another form, it consists of a sheet-metal flap 4 pivoted to the end of the frame, either by means of a longitudinal slot 18, Figs. 5 and 6, or by means of pins working in transverse slotted bearings 9, Fig. 7 ; in each case resilient projections are provided on the flap to retain it in the closed position. In other forms, the safety device is a sliding cap, moving either across the tongue 11, Fig. 9, or to and from it, 13, Fig. 11.
Patent GB-563904-A (GB)
Title: Improvements in or relating to oil-modified alkyd resin enamel compositions
IPC: C09D167/08
Filed: 1942-12-30
Abstract: An enamel composition containing metallic pigments comprises a drying oil-modified alkyd resin together with a minor proportion, e.g. 1-8 per cent of the weight of the resin of 12-hydroxystearin introduced as a colloidal gel or paste.  The 12-hydroxystearin may be obtained by catalytic hydrogenation of castor oil.  The colloidal gel may be prepared by adding the 12-hydroxystearin with stirring to a hydrocarbon solution of a linseed/chinawood oil modified alkyd resin heated to below 90-100 DEG  F., cooling to precipitate the 12-hydroxystearin in colloidal form, adding petroleum naphtha and grinding in a ball or pebble mill.  Examples describe enamels containing: (1), (2) Aluminium flake pigment, iron blue pigment, two mixed oil modified alkyd resins, urea-formaldehyde-monohydric alcohol resin, e.g. as described in Specification 483,399, manganese naphthenate, 12-hydroxystearin and a hydrocarbon solvent.  (3) Aluminium flake pigment, titanium dioxide, lamp black, the two alkyd resins, a drier and 12-hydroxystearin and a hydrocarbon solvent.  (4) Aluminium flake pigment, a linseed/chinawood oil modified alkyd resin, a urea-formaldehyde-monohydric alcohol resin, a drier, 12-hydroxystearin and a hydrocarbon solvent.  The aluminium pigment may be in dry or paste form and may be added as a slurry in the enamel solvent used.  It or its equivalent, e.g. bronze should be present in an amount of approximately 3 per cent.  The enamels are particularly suitable for application to metallic articles.  The Specification as open to inspection under Sect. 91 is not limited to enamels containing metallic pigments and an example is given of an enamel containing blue lake pigment, the two alkyd resins, an oil soluble phenol-formaldehyde resin varnish, a drier, 12-hydroxystearin and a hydrocarbon solvent.  The oil soluble phenolformaldehyde resin varnish is present as a suitable inhibitor.  The Specification as open to inspection is also not limited to enamels with an alkyd resin base and contain references to oleo resinous compositions.
Patent GB-444052-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K17/30
Filed: 1935-06-28
Abstract: 444,052. Induction motors; transformers. ROMEIRA, M. P., 117, Old Broad Street, London. June 28, 1935, No. 18513. [Classes 35 and 38 (ii)] For controlling the speed of an induction motor between full speed and standstill, the secondary winding has six phases connected to an induction voltage regulator having two parallel stator windings. It is explained in the Specification that if in a secondary winding having two star windings A, B, C and A<1>, B<1>, C<1> in phase opposition, the outer ends of opposite phases are connected together, no secondary current will flow and therefore the motor will not rotate, but by displacing the phase of the voltages induced in one set of windings a resultant voltage will be set up. Arrangements of transformers, auto-transformers and induction regulators are described to explain the action of a speed control system employing such secondary windings. According to the invention, the ends A, B, C and A<1>, B<1> C<1>- of the secondary phases are connected as shown in Fig. 7 to the stator windings AT, BT, CT and A<1>T, B<1>T, C<1>T respectively of an induction regulator, the fields of these windings coinciding in phase rotation. The middle points of corresponding phases in the regulator winding are connected together and to one end of the rotor phase windings AR, BR, CR, of the regulator, the other ends of the rotor windings being connected to the secondary terminals A, B and C. If the motor is required to run at full speed for a considerable length of time, a six pole switch may be provided to short-circuit the terminals A, B, C, A<1>, B<1>, C<1> and so cut out the losses in the regulator. Small low voltage motors may have the primary winding P on the rotor and the secondary windings on the stator.
Patent GB-205159-A (GB)
Title: Improvements in or relating to parachutes
IPC: B64D17/54
Filed: 1922-07-06
Abstract: 205,159. Green, S. S., and Green, M. A. July 6, 1922. Parachutes.-A parachute of the umbrella type combined with a balloon-like extension 10 adapted to be filled with air through a central opening in the parachute, has a hollow staff containing a helical compression spring engaging a pin 6 sliding in slots 7 in the staff and carrying a ring 5 to which rib stretchers 4 are attached. For use on aircraft the staff is universally jointed at 16 to a link 15 pivoted between lugs 14 on the aircraft wing, a recess 17 engaging the ring 5 to hold it in position with the parachute ribs folded. The top of the staff is normally held in a fork 18 by a spring catch which can be released by a cord 21. Springs 22 raise the link 15 into a vertical position when the spring catch is released.
Patent GB-1094221-A (GB)
Title: Process for preparing a solution containing hydroxylammonium salt
Inventor: ROOIJ ABRAHAM HERMANUS DO
IPC: C01B21/14
Filed: 1965-05-03
Abstract: A solution containing a hydroxylammonium salt is prepared by catalytically reducing with the aid of molecular hydrogen a nitrate solution which has a pH of from 0-3 obtained by the addition to the solution of either phosphoric acid or a bisulphate.  The solution preferably also contains a soluble sulphate or phosphate of such a type and amount that the solution is buffered at said pH.  Suitable mixtures are phosphoric acid and ammonium monophosphate and ammonium bisulphate with ammonium sulphate.  The catalyst may be palladium, or possibly a noble metal on a carrier, e.g. alumina or activated carbon, and the nitrate concentration is in the molar range 1 to 5.
Patent GB-166043-A (GB)
Title: Improvements in handles for motor cycle carburettor levers
IPC: B62M25/04
Filed: 1920-07-05
Abstract: 166,043. Fox, W. B. July 5, 1920. Control mechanism.-An auxiliary anti - vibration handle a for motor-cycle carburettor levers is made of rubber or other resilient material, and one end b, which may be ribbed internally, is adapted to be slipped over the ordinary handle, the other end c being hollowed for the insertion of the thumb.
Patent GB-709821-A (GB)
Title: Improvements in clutches
Inventor: CLARKE ARTHUR
IPC: B21J15/30
Filed: 1951-08-07
Abstract: 709,821. Operating clutches. STEELS & BUSKS, Ltd. March 17, 1952 [Aug. 7, 19511. No. 18581/51. Class 80 (2) In a plate clutch 4, 5 for rivet or other presses, engagement by a spring-loaded nut 17 mounted on a screwed sleeve 15 keyed on the driven shaft 1 is effected by manually withdrawing a spring- pressed slide 27 from engagement with a lug 22 projecting from the nut 17, the slide 27 being inevitably returned into the path of the lug 22 so as to disengage the clutch and engage a disc brake 29, 31 at the end of one revolution. The lug 22 has a steel-faced rubber cushion. Another parallel and spring-pressed slide 35 carries a pivoted pawl 43 spring-urged towards a notch 44 in slide 27, both slides being movable in a fixed bracket 34 and having transverse recesses 40, 41 through which passes a bar 39 connected to an operating treadle, the bar 39 having an oblique surface 42 co-operating with a corresponding surface in recess 41, Normally, the slides 27, 35 occupy the rightward position shown in Fig. 3, with the slide 27 in contact with lug 22 to hold the nut stationary, with the clutch disengaged and the brake engaged. On depressing the treadle. bar 39 is pulled down. thereby moving slide 35 to the left and with it, due to the engagement of pawl 43 with notch 44, the slide 27, thus freeing nut 17 which, under the action of its spring 19, moves to the right to disengage the brake and engage the clutch. After a half revolution, a lug 23 projecting from the nut 17 engages the pawl 43 to disengage the latter from the recess 44, so that slide 27 is returned to the right by its spring 36 into the path of lug 22, whereby the clutch is disengaged and the brake engaged at the end of the revolution even if the treadle has not been released.
Patent GB-1183633-A (GB)
Title: The Dyeing of Polyvinyl Chloride.
IPC: D01F6/08
Filed: 1967-04-21
Abstract: 1,183,633. Dyeing polyvinyl chloride. A.G.S.A. APPLICAZIONI CHIMICHE S.p.A. 21 April, 1967 [6 May, 1966], No. 18594/67. Heading D1B. Fibres or shaped bodies of polyvinylchloride obtained by wet or dry spinning and having a high syndiotactic index (i.e. greater than 1.8) are dyed by passing the fibres or shaped bodies which have not been subjected to drying by heating through a bath containing dyestuff, heating to a higher temperature and then removing any unfixed dyestuff. The amount of dyestuff pick-up may be regulated and the p.v.c. may be stretched before dipping. The further heating is to above 100‹C e.g. 120-220‹C and the unfixed dye may be removed by hot water e.g. boiling or by aqueous soap or detergent solutions. Dyebath concentration may be from 0.001 % by weight up to a saturated dyestuff solution and sulphur, direct, metallised, basic, acid, azoic and plastosoluble dyes may be used.
Patent GB-599245-A (GB)
Title: A tool bar assembly for agricultural tractors
IPC: A01B63/04
Filed: 1946-06-21
Abstract: 599,245. Agricultural implements. ALLISON, T. C. June 21, 1946, No. 18729. [Class 6 (i)] A tractor tool-bar assembly comprises a pair of arms 1 pivoted on a fixed axis 2 at the rear of the tractor and carrying at their free ends a pair of arms 5 carrying tool-bars 12, 13, the latter arms being provided with upstanding members 6, 7 which resiliently engage a third arm 8 pivoted about a second fixed axis 9. The resilient connection comprises a pin 25, carried by the upstanding members 6, 7, located in a slot in the arm 8 and held by compression springs 26 and tension springs 28. This connection permits temporary displacement of the tools upon encountering obstructions. The tool-bars are lifted either by power means (not shown) or manually by a lever 34 and links 31, 32. The arms are arranged to maintain the tool-bars, during lifting, parallel to the ground.
Patent GB-569579-A (GB)
Title: Improvements in turbines
IPC: F01D1/02
Filed: 1943-11-11
Abstract: 569,579. Turbines. AKTIEBOLAGET GOTAVERKEN. Nov. 11, 1943, No. 18800. Convention date, Nov. 9, 1942. [Class 110 (iii)] In a turbine, elastic fluids of different pressures are led along separate paths tc different sets of blades, moving blades of the impulse type being provided for the higher pressure region, the reaction blades for working fluid at a lower pressure. For intermediate regions of pressure the blades may be shaped approximately as a mean between impulse and reaction shaped blades. Fig. 1 shows a high pres sure inlet 1 for impulse blades 10, and an inlet 2 for lower pressure gas for reaction blades 11, a common exhaust chamber 1: being provided. The 'gas pressure in the space 16 is preferably uniform. In Fig. 4 the high pressure gas enters at 18 and the low pressure gas at 17. The second ring of rotor blades 25 is common to the two gas streams, being of the reaction type. The pressure in the space 28 is uniform. The invention may be extended to turbines having more than two gas streams, and further expansion stages may be used. Radial flow turbines may be used, including those of the double rotation type.
Patent GB-581155-A (GB)
Title: Improvements in or relating to ceramic articles and methods of making same
Filed: 1942-04-17
Abstract: Alumina and like substances are ground in water to form particles less than 30 microns in size and of colloidal properties, the alumina &c. is dried, as by filter pressing, and heating to 200 to 600 DEG C., to a water content of 1/2 to 3 per cent. and fired at from 1200 DEG C. to below 1700 DEG C. to form non-porous vitreous ceramics of conchoidal fracture form, and, e.g., for use as crucibles or abrasives &c.
Patent GB-1268504-A (GB)
Title: Electroosmotic concentration, purification, and desalting
Inventor: BIER MILAN
IPC: C07K16/06
Filed: 1969-04-14
Abstract: 1,268,504. Electrodialysis,electro-osmosis. M. BIER. April 14, 1969 [April 15, 1968], No. 18938/69. Heading C7B. An aqueous solution e.g. of ammonium sulphate or suspension, particularly containing a biological colloid such as dog or rabbit serum, hog cholera antiserum, plasma fractions derived therefrom or globulin fractions is concentrated, purified and/or desalted by subjecting it to electro-osmosis and electrodialysis across dialysing ion-permeable membranes e.g. of regenerated cellulose against an external aqueous medium containing a polyelectrolyte (containing a preponderance of negatively or positively charged ionized groups with molecules or particles sufficiently large to be retained by the dialysing membrane), e.g. 0À07-8% by weight of polyacrylic acid, poly (ethylene-maleic acid), poly (methyl vinyl ether-maleic acid), polysilicic acid, polyphosphoric acid, or salt thereof. As shown in Fig.4 the process may be carried out with the aqueous solution or suspension 42 received in one or more cells 40 made from ion-permeable membranes suspended in a bath 1 of the aqueous medium 2 containing the electrodes 3. Fig. 1 shows an assembly 10 of ion-permeable membranes 14 spaced apart by spacer plates 12 in which each sample chamber is separated from the next by an aqueous medium compartment. Medium 2 is preferably circulated through heat exchangers or directly cooled. The spacer plates are provided at the top and bottom with registering ports 18, 20 connected to feed inlets and outlets for the two solutions respectively, and contain windows to expose the membranes held therebetween. Specification 3,079,318 is referred to.
Patent GB-1046446-A (GB)
Title: Improvements in or relating to electric regulation systems
IPC: G05F1/24
Filed: 1962-05-16
Abstract: 1,046,446. Transformer systems. BRENTFORD ELECTRIC Ltd., and C. B. HENMAN. May 15, 1963 [May 16, 1962], No. 18940/62. Headings H2H. A transformer system for regulating the voltage at a pair of output terminals 16, 17 comprises a fixed ratio transformer 11 having its primary winding 12 connected to an alternating current source 15 and one of its secondary windings 14 supplying the output voltage of the system by way of the secondary winding 28 of a further transformer whereby the output voltage of the secondary winding 14 can be bucked or boosted to a variable extent by means of apparatus including a regulator 21 and switches 23, 26. A further secondary winding 13 of the transformer 11 is connected across the auto-transformer winding 18 of the regulator 21, the winding 18 being provided with two roller contacts 19, 20 arranged to move end to end of the winding in opposite directions so as to always be symmetrically disposed about the centre point of the winding. The voltages tapped off by the contacts 19, 20 are applied, by way of the switches 23, 26, to primary windings 24, 25 associated with the secondary winding 28 so as to provide the bucking or boosting voltages. The two primary windings 24, 25 are arranged to aid each other and each have the same number of turns. The switches 23, 26 are of the " make-before-break " type and the contacts 19, 20 are returned to their associated end positions in which no voltage is applied to either winding 24 or 25 before the switches 23, 26 are changed over from one position to another. If the mains supply is suitable it may be used to energize the regulator 21 directly and the winding 13 omitted. The system ensures that the product of the maximum voltage applied in the output circuit by the regulator during boost and the maximum current flowing in the output circuit during boost is substantially equal to the product of the maximum voltage applied in the output circuit by the regulator during buck and the maximum current flowing in the output circuit during buck and that both of these products are less than the product of the mean of the maximum boost and buck voltages applied in the output circuit by the regulator and the maximum current flowing in the output circuit.
Patent GB-207766-A (GB)
Title: Improvements in or relating to locomotives in combination with steam driven tenders, and the like
IPC: B61C1/02
Filed: 1923-07-24
Abstract: 207,766. Hammersley, H. J. July 24, 1923. Locomotives, steam, of articulated construction.-The weight of a steam locomotive and steam-driven tender is equally distributed throughout its entire length, part of the weight of the locomotive being transferred to the tender by means of a pivot I, the position of which is mathematically determined. Water tanks H, F, carried by the locomotives and tender, are coupled together, and their capacities are so arranged that the weight of water taken from the side tanks H equals the total weight of water and fuel taken from the tender.
Patent GB-982840-A (GB)
Title: Improvements relating to the laying of plastic drainage tubing
IPC: F16L1/032
Filed: 1961-05-25
Abstract: 982,840. Agricultural irrigation. J. K. W. BAINES, A. S. BAINES, and T. B. C. DAVIS. [Aug. 23, 1962 [May 25, 1961], No. 18995/61. Heading A1B. A method of forming and laying an underground drainage tube in situ comprises forming an underground tunnel having a mouth at one end where it emerges from the soil and advancing a tube former 13 through the tunnel while passing the material through the former to form a tube characterized in that the rear end of the tube is anchored at the mouth of the tunnel by securing to the end of the tube a tubular endpiece in the form of an open-ended funnel 17 and allowing the funnel to be drawn against the mouth of the tunnel by tension in the newly formed tube. Specifications 975,653 and 975,654 are referred to.
Patent GB-735816-A (GB)
Title: Improvements in or relating to the preparation of sodium perborate monohydrate
IPC: C01B15/12
Filed: 1953-07-09
Abstract: <PICT:0735816/III/1> Sodium perborate monohydrate is prepared by dehydrating sodium perborate tetrahydrate fluidized by a current of heated air.  As shown in the Figure, a column 1, provided with a heating jacket 2 is filled to a height 10 by charging tetrahydrate through removable cover 9.  A stream of heated air enters at 4 and fluidizes the mass resting on perforated plate 3, the air leaving at 5.  Temperature measurement is effected at a and b, and when dehydration is completed the sieve plate is removed and the product removed at 8 or alternatively through an aperture (not shown) in the wall.  Air temperatures may be from 60 DEG  to 150 DEG  C., the temperature of the heating jacket from 56 DEG  to 62 DEG  C. and the temperature of the fluidized bed, 56 DEG  C.