baber/WOPTO huggingface dataset:
Patent GB-1198129-A (GB)
Title: Method and apparatus for Electrostatically Coating the Surfaces of Articles with Pulverulent Materials
IPC: B05B14/45
Filed: 1967-07-24
Abstract: 1,198,129. Electrostatic coating; coating apparatus. S.F.B. SPEZIAL-FILTERBAU M. OFNER K.G. 24 July, 1967 [29 July, 1966; 5 May, 1967 (2)], No. 33946/67. Headings B2E and B2L. The surface of an article is coated with pulverulent material by dispersing the material in an air current and electrically changing and spraying the material on to the surface, drawing off the particles not adhering to the article by suction, separating the particles from the air current coming from the suction line, liminating the electric charge of the entire recovered material and screening the material before it is sprayed again. In Fig. 1 the material is conveyed through suction line 18 leading from blower 12. into the collecting container 3 composed of cylindrical vessel 4 and funnel-like supply container 5. The material is supplied from the supply container 5 to the gate wheel 19 by gravity, the nozzle 7 adopted to pass blasts of compressed air into outlet channel 6 of the container preventing the material from being packed in the outlet channel 6. The gate wheel 19 conveys the material in measured quantities into a sifter 21 where the material is disintegrated and screened. The material then emerges from the outlet 22 passes into the storage container 24 of a pneumatic conveying device. The material is dispersed therein within an air current and conducted through the connecting line 25 to the spray gun 26 in which the particles are electrically charged before being ejected. Various parts of the spray material which do not settle on and adhere to the article to be coated are drawn off by the suction of the blower 12 through the opening 15 of a suction channel 16 located on the bottom of the spray chamber 17 and are blown into vessel 4. The blower 12 forms, together with the vessel 4, a cyclone separator. The particles are blown from the outlet tube 11 of the blower and precipitate from the air current. Those parts of the drawnoff material which are not separated from the air current are separated in filters 8 and 9 through which the exhaust air of the cyclone separator is conducted and fall into the collecting container 3 when the air supply is interrupted. The particles of the material which are separated from the exhaust air come in contact with the wall of the vessel 4 and partly also the wall of the supplying container 5 and thereby lose their electric charge. In further embodimends: (Figs. 4 to 6 not shown) the material is suspended in air in the collecting container, the bottom of which is provided on the inside with a porous layer spaced from the outer wallthereby forming a chamber which communicates with a compressed-air supply line, the inner side of the porous layer being provided with an electrically conductive coating which participates in completely removing the electric charge from the recovered particles; when the air supply is interrupted (Fig. 7, not shown,), two separating units are connected by separate connecting lines to the inside of the spray chamber.
Patent GB-1192452-A (GB)
Title: Thermographic Stencil
Inventor: SPENCER ALEXANDER
IPC: B41N1/24
Filed: 1967-07-25
Abstract: 1,192,452. Stencils; embossing. GESTETNER Ltd. 23 July, 1968 [25 July, 1967], No. 34075/67. Headings B6C and B6J. A stencil blank, which is to be imaged by irradiation with infra-red radiation whilst in contact with an original carrying a heatabsorbent image, comprises a thin sheet of thermoplastic film softening at a temperature not above 250‹ C. and having a multiplicity of minute, closely spaced holes or weakened areas. The imaging operation causes holes in the imaged areas to be enlarged, or perforations to be formed in the weakened parts at the image areas. The weakened areas may be formed by embossing, the film being passed between a hard roller carrying a sheet of abrasive paper thereon or having a regular pattern of minute projections, and a plain roller having a relatively resilient surface. For making the holes, it is ensured that the projections pass through the film. The film which may be orientated or non- orientated, and may be heat-shrinkable, can be polystyrene, vinyl chloride/vinylidene chloride copolymers, high density polyethylene, polypropylene or polyethylene terephthalate. If a film with holes therein is used, the enlarged image holes pass more ink than the remainder so that a toned copy is obtained. To avoid the toning effect, the holed film 1 may be passed between pressure rollers which cause the original conical holes 4 to assume the partially closed form shown in Fig. 5. A sealing film 6, which may be polystyrene, polyvinyl acetate, vinyl chloride copolymers, cellulose nitrate, acetate/butyrate, polyvinyl butyral, or polyvinyl formal in solution, or emulsions of similar polymer, can now be applied, but must be such as not to prevent reopening of the holes in the image areas during imaging. Finally, a sheet 7 of conventional stencil tissue may be adhered to the film 6 to facilitate handling of the stencil. The embossing &c operation may be performed on the laminate 1, 6, 7 instead of on the film 1. The completed film is attached at one edge to a backing sheet in a manner conventional for duplicating stencils.
Patent GB-175459-A (GB)
Title: Improvements in, or connected with, thermionic valves
IPC: H01J19/50
Filed: 1920-12-02
Abstract: 175,459. Silica Syndicate, Ltd., and Reynolds, F. Dec. 2, 1920 Vacuum tubes.-A rigid grid and an anode are both mounted on supports which are resilient only in a longitudinal direction so that expansion and contraction are allowed for. In one construction, tubes e fused to the glass, silica, &c. envelope contain molybdenum or tungsten wire or other springs f bearing on the ends of silica &c. rods d which slide in the tubes and are forked to engage the anode B. Other rods d<3> similarly mounted are provided with shouldered ends fitting into a ring h attached to one end of the grid. The anode and grid may be similarly supported at their other ends, or, as shown, may be supported by stationary rods g which may be sealed in holes in the envelope white forced inwards to compressthe springs at the other end. Alternatively, the tubes e may be attached to the electrodes and the rods d, d<3> to the envelope. One or both domed ends A<2> of the cylindrical envelope may be attached after inserting the internal parts.
Patent GB-487055-A (GB)
Title: Manufacture of stable colloidal dispersions of metals
IPC: B01J13/00
Filed: 1936-12-14
Abstract: Colloidal dispersions of metals, particularly gold, silver and bismuth, are stabilized by the addition of a water-soluble oxy-alkyl cellulose or a derivative thereof and a water-soluble salt of lysalbinic acid or protalbinic acid or both.  Suitable cellulose derivatives are hydroxy-methyl, hydroxy-ethyl or hydroxy-ethyl-methyl celluloses.  According to an example, 2,75 c.c. of an aqueous solution of bismuth-ammonium citrate containing about 6 per cent of bismuth is stirred into a mixture of 25 c.c. of an aqueous solution of 0,1 per cent of sodium lysalbinate and 0,1 per cent of sodium protalbinate and 25 c.c. of an aqueous solution of hydroxy-ethyl-methyl-cellulose having a viscosity of 3.  The solution is reduced at 50 DEG  C., while bubbling nitrogen therethrough, by glucose, sodium hydrosulphite or formaldehyde. The dispersion is precipitated with alcohol and ether, and the precipitate dissolved in water.  A sample has been furnished under Sect. 2 (5) of colloidal silver obtained by the reduction of silver nitrate with triethanolamine in aqueous solution in the presence of hydroxy-ethyl-methyl-cellulose and sodium lysalbinate and sodium protalbinate.  The Specification as open to inspection under Sect. 91 describes the preparation of a dispersion of gold from gold chloride in a similar manner.  This subject-matter does not appear in the Specification as accepted.
Patent GB-432551-A (GB)
Title: A process for rendering india-rubber and like material fire-proof
IPC: C08K5/521
Filed: 1934-03-06
Abstract: Indiarubber, balata, &c., are rendered fire-proof by adding thereto 5-15 per cent of triphenyl phosphate, tri-cresyl phosphate, triphenyl borate or a mixture of triphenyl and tricresyl phosphate.  The esters are preferably added in the form of an emulsion and at the time of masticating with the usual fillers, sulphur, &c.
Patent GB-1275193-A (GB)
Title: Improvements in or relating to automatic liquid flow control gates
IPC: E02B7/20
Filed: 1970-07-15
Abstract: 1275193 Water gates SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM) 15 July 1970 [20 Jan 1970] 34384/70 Heading E1H A gate to automatically control the depth of water in an upstream section of an open channel includes a part-cylindrical barrier-plate 1 having a float 2 fixed to its upstream side and mounted in a narrow section 3 of the channel so as to pivot about a horizontal axis downstream thereof. To prevent a substantial change in the surface level of the water in the region of the float due to acceleration of the water entering the section 3 a short tapering entrance to this section is provided by walls with flat surfaces 9, 10 extending from a wall 8. Said walls, outwardly-inclined flat side-walls 18 and the bottom lining of the section 3 are made of concrete. Each of the faces 9 may be replaced by two mutuallyoblique faces (12, 13), Figs. 5 and 6 (not shown).
Patent GB-335796-A (GB)
Title: Improvements relating to alternating current electricity meters
IPC: G01R11/36
Filed: 1929-11-11
Abstract: 335,796. Allgemeine Elektricitõts Ges. Nov. 13, 1928, [Convention date]. Supply meters. - In order to enable a meter to be employed on circuits of different frequencies, the current driving flux is varied in accordance with the frequency, as by varying the number of ampere-turns of the current coil in accordance with the frequency. As shown, the main current coil a is tapped at a<1>1, the tapping being brought to a terminal a1 for use on the circuit of lower frequency, for example 25 periods per second. On a circuit of the higher frequency, for example 50 periods per second, the complete coil is employed. An adjustable shunt resistance d is arranged in parallel with the branched winding of the main current soil. The voltage coil b is connected directly across the mains when employed with the lower frequency, and is connected in series with a non-inductive resistance c when used with the higher frequency so that the phase displacement is the same in both cases. A meter designed for more than two frequencies has more than one adjustable shunt resistance for connection in parallel with the current coil or a portion thereof.
Patent GB-283924-A (GB)
Title: Improvements in or relating to wind musical instruments
IPC: G10D7/08
Filed: 1927-12-20
Abstract: 283,924. Evette, M. Jan. 20, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Saxophones &c. - Relies to improvements in saxophones and like instruments. An octave-hole having a central tube projecting into the body and uncovered by the L thumb; also an upper F# aperture closed by a cup from a key operated by L4, are arranged at the left-hand side of the upper part of the body (Fig. 4, not shown). An aperture for upper G is provided in the overlapping parts of the mouthpiece and body, on the righthand side, the cup being opened by a key for R1, which simultaneously opens the cup of upper E (Figs. 1 to 3, not shown). A lower C# hole 27, Fig. 6, normally open, is closed by a lug 28 on the normally open C# cup 24 when the latter is closed by L4 key 29. The lower C# holes 27 may independently be closed by a key 22, Fig. 5, operating arms 32, 30, 29<6>, 27<1>. Depression of key 22 also depresses key 20 by a lug 33, which by a bridge 37 closes the normally open cup 19 of lower D. Another key 21, in alignment with the keys 20, 22, directly opens the normally closed lower E# hole 21<3>. The C cup 50, Fig. 7, normally open, on depression, lifts an arm 48, thus allowing a spring 45<1> to close the B# hole 44. With the C cup 50 depressed however, cup 44 may be raised by key 54 acting under a lug 55 thereon. The D cup 56, which has a lifting spring, is held normally closed by an arm 64, which arm may be raised by a key 66 (or by an arm 98 from the F# cup) to allow cup 56 to open, simultaneously closing C# cup 68. The D cup 56 being open, can be closed (the C# cup 63 remaining closed) by depressing either the C cup 50 or the B# key 62, these acting by arms under the tail of the D-cup lever. The octave note of any hole may be obtained by providing the hole with two cups, the underneath cup having a small central hole. Raising both cups yields the normal note; raising the upper cup only yields the uctave. In another construction (Figs. 10, 10' not shown), closure of any one of the (alternate) cups E#, F, G, A, B, C# closes those above it. Further, F is closed when E is closed; closing F# closes G; a key closes simultaneously the A cup and a G# cup to sound G; and another G# cup, normally open, is closed by any of the cups F#, F, E, E#, or on removing finger L4 from a key connected to the cup through a clutch.
Patent GB-393335-A (GB)
Title: Improvements relating to protective devices for use with potential transformers
IPC: H02H3/36
Filed: 1931-12-12
Abstract: 393,335. Protective cut-out arrangements. SOMERVILLE, T. B., 11, Entwistle Avenue, Davyhulme, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Dec. 12, 1931, No. 34518. [Class 38 (v).] In order that potential transformers supplying energy to apparatus such as voltage regulators &c. may be prevented from delivering other than a correct proportional voltage in case of fault in the transformer, an auxiliary potential transformer is provided and a protective relay which compares the output of the two transformers and ensures that if the ratio between such outputs does not remain constant the controlled apparatus is cut out of action or its operation is suitably modified. As shown in the Figure the main potential transformer 3 fed through fuses 4 from an alternator 2 supplies the controlled apparatus through leads 5 in its secondary circuit, which is also connected to one coil 8 of a differential relay 10 the other coil 9 of which is fed from the secondary of an auxiliary potential transformer 6 the primary 'of which is connected through fuses 7 to the bus-bars 1a, 1b, 1c. Resistances 11, 12 in the circuits of the opposing coils 8, 9 are adjusted so that when the main transformer is operating correctly the armature 13 remains unattracted but on a sufficient disturbance of the ratio of the forces exerted by the coils contacts 14, 15 are connected either to cut out the regulator or to insert a resistance in its operating circuit to modify its action. The resistances 11, 12 may be chosen so that the relay will operate when the current in the main transformer 3 fails but does not operate when the current supplied by the auxiliary transformer 6 fails.
Patent GB-175143-A (GB)
Title: Improvements in pipe hooks or clips
IPC: B21D53/36
Filed: 1920-12-08
Abstract: 175,143. Allen, F. Dec. 8, 1920. Hook-headed bolts and spikes. -The hook is cut from a blank of sheet metal and bent into the shape shown, the cross-section at 3 being slightly curved. The bent-over portion 5 forms a shoulder 7 for hammering into position.
Patent GB-1069807-A (GB)
Title: Impedance-measuring circuit arrangements
IPC: G01R27/02
Filed: 1964-08-25
Abstract: 1,069,807. Impedance measurement. SIEMENS A. G. Aug. 25, 1964 [Aug. 26, 1963; Sept.30, 1963], No. 34657/64. Heading G1U. An arrangement for measuring impedance at high frequencies consists of two stages, the first of which (Fig. 1) includes three identical complex voltage dividers each comprising components R and rR connected in parallel across a voltage source 1. A device of unknown impedance to be measured X is connected in parallel with a resistor rR of one of the voltage dividers, and the voltage U, across this parallel arrangement of device and resistor provides one input for the second stage. A second input for the second stage is provided by the voltage U N  derived from a similar arrangement including a known or unknown resistor N connected across the corresponding resistor of a further voltage divider, while a third input U o  for the second stage is derived from a third voltage divider. In the second stage of the arrangement the three voltages U x , UN and U o  are combined so that in the case where N is known, X is evaluated according to the equation whilst in the case where both X and N are unknown, the second stage evaluates the difference Alternatively, each unknown may be separately derived. In the case where N is known, the third potential divider may not be included, in which case X is evaluated from the approximate formula X = N U x /U N , on the assumption that X is small and the voltage divider resistances are large. In the second stage (Fig. 2) the three voltage Ux, U N , U o , each of which are at a frequency fm, are mixed in modulators 2, 3, 4 with a signal of frequency fm + fz, so that subsequent operations may be carried out with signals at the (lower) frequency fz. After modulation the signals are passed to the variable attenuators 15, 16 and the amplifiers 5, 6, 7. Thereafter by means of the difference transformers 8, 9 voltage signals  (U o -U N ) and (U o -U x )are produced and these are multiplied by the signals U x , U N respectively in the multipliers 10 and 11. The outputs from the multipliers are passed to the quotient plotter 12 to derive outputs at 13 and 14 corresponding to the magnitude and phase of the unknown impedance X. If N is also unknown, a third transformer is included Fig. 4 (not shown) so that a signal corresponding to U x -U y  may be derived. The signals (U o -U N ) and (U o -U x ) are multiplied together, as are the signals U o  and (U x -U y ). The quotient of these two product signals is then derived. If low impedances X are to be measured according to the relation X = N U X /U N , the units 4, 7, 8, 9, 10 and 11 are omitted from the circuit shown in Fig. 2. Capacitance and resistance may be measured by the system by adjusting the known impedance to balance out disturbing resistive or capacitive components. Loss angle may be measured similarly.
Patent GB-955925-A (GB)
Title: Process for making textile fabrics or articles thereof resistant to bacterial or microbiological growth
IPC: D06M16/00
Filed: 1962-09-11
Abstract: A textile fabric is proofed against bacteria by treatment with a mixture of 5-95% of 3, 5, 41-tribromosalicylanilide and 95-5% of 3, 5- or 5, 41-dibromosalicylanilide.  The fabric may be of cotton, wool, nylon, acrylic, polyester, or rayon fibres.  The germicide may be employed as a solution or suspension in an amount of 0.6-3.3 parts per million.  The solvent may comprise water or a mixture of a mono-, di-, or tri-alkanolamine and a mono- or poly-hydroxy aliphatic alcohol.  The process may be carried out in conjunction with laundering or dyeing.  The proportion of germicide may be a few parts per million to 10% of a laundry aid, e.g. an alkyl aryl sulphonate.
Patent GB-1395420-A (GB)
Title: Thermal actuator
IPC: G01K5/44
Filed: 1972-07-25
Abstract: 1395420 Temperature responsive actuating elements TEXAS INSTRUMENTS Inc 25 July 1972 [3 Aug 1971] 34757/72 Heading G1D A thermal actuator which converts electrical energy to mechanical movement comprises a casing 12 open at one end to allow movement therethrough of a piston 24 which is biased to the retracted position (as shown) by a spring 36. A  portion of the piston 24 enters a chamber 16 holding a thermally expansible medium 20, an O-ring 84 being provided to sealingly mount a floating head piston 78 in the neck 18 of the chamber 16. Alternatively the portion of the piston entering the chamber may be in direct contact with the medium and itself bear the sealing ring, Fig. 1 (not shown). The medium 20 is heated by means including an element 22 which has a steeply sloped positive temperature coefficient of resistance above an anomaly temperature so as to generate heat which maintains the medium 20 at a predetermined temperature in response to continuous electrical energization. The heating element may comprise a ceramic wafer of semi-conducting barium titanate, the medium 20 may be oil, wax or polyethylene and the casing 12 may be integrally formed of phenolic plastics, or be in two parts (as shown) of aluminium 12a and phenolic plastics 12b. An aperture 38 allows initial calibration, excess medium 20 venting therethrough. A heat radiating element 70 may be employed to effect a more rapid expansion of the medium 20. The actuator may operate a valve or a switch.
Patent GB-441159-A (GB)
Title: Improvements in catch-devices for use with doors, gates, windowframes and the like
IPC: E05C19/02
Filed: 1934-12-04
Abstract: 441,159. Spring catches. COPE, J. C., 62, Upper Chorlton Road, and GARDNER, S., 233, Rye Bank Road, Chorlton-cum-Hardy, both in Manchester. Dec. 4, 1934, No. 34762. [Class 44] A door &c. catch of the kind which yields to pressure on the door comprises a projection 10 mounted on the door and adapted to engage laterally between a fixed member 8, and a slidable spring-pressed member 16. Fig. 4 shows a form in which the member 16 has a shoulder 20 facing a fixed abutment 19 so that member 16 may be locked against movement by shooting a bolt 18 into the space 21. A modification is described in which the members 8, 16 are mounted on an attachment plate so that the latter may be secured to the inner face of the fixed door &c. frame. In a further modification both members 8, 16 are slidably mounted and spring-biassed. Rubber may be used to provide the spring action. Specification 424,877 is referred to.
Patent GB-1484024-A (GB)
Title: Load
IPC: B66C1/00
Filed: 1974-08-07
Abstract: 1484024 Load formations for engagement by handling equipment SUNOS AB 7 Aug 1974 [10 Sept 1973] 34880/74 Headings B8C and B8H A bale or unit load composed of one or more bales of fibrous material, such as cellulose pulp is formed with a recess 8 at a pair of upper side edges 1, 2 so that the binding wire or strap B makes a smaller lifting angle α 2  than with a bale with no recesses, Fig. 1 (not shown). The recesses may have a planar or curved bottom and a further recess 11, Fig. 3, may be provided in each recess 8 to aid the engagement of lifting hooks 5, 6 with the wire or strap B. The recesses are formed by cutting or preferably by pressing using a press whose upper platen 12, Fig. 5, has a pair of projections 14. The recesses may extend along the whole lengths of the edges 1, 2. In a unit load the bales may have only one recess.