baber/WOPTO huggingface dataset:
Patent GB-415564-A (GB)
Title: Improvements in or relating to metal polish
IPC: C11D9/18
Filed: 1933-07-18
Abstract: A metal polish in dry powder form for use with water and which forms a stable suspension with water, consists of 70 per cent or more of abrasive, sodium or potassium soap, and a soluble ammonium salt such as the sulphate or oxalate in amount about one half that of the soap. A small amount of a mineral or vegetable oil may be added.  As abrasives, pumice, diatomaceous earth, powdered chalk and silica may be used; if crystalline silica is used, a small amount of a suspension agent such as bentonite or other colloidal clay is added. Specification 14963/14, [Class 91], is referred to.
Patent GB-775968-A (GB)
Title: Thermoelectric generator
Inventor: FRITTS ROBERT WASHBURN
IPC: G01K7/06
Filed: 1954-07-12
Abstract: 775,968. Thermo-electric devices. MILWAUKEE GAS SPECIALTY CO. July 12, 1954, No. 20389/54. Class 53. A thermo-electric generator comprises a first thermo electric element mounted in a cavity in a second such element, a rigid conductor extending from the first element through a sealing means for the cavity. In Fig. 2, the thermo-couple elements consist of a cup-shaped element 10 of stainless steel or an iron alloy which encloses the other element 11 of semimetallic alloy such as lead and selenium-tellurium. Contact between elements 10 and 11 at the hot junction is established by electrode 12. At the cold junction, element 11 is bonded to an electrode 13 which is connected via flexible connection 23 to the inner conductor of a coaxial lead 21. A flexible diaphragm 18 is attached to electrode 13, and a cup-shaped member 19 is adapted to compress a resilient ring 17 of insulating material, between diaphragm 18 and a collar 16 attached to element 10, so as to seal off the cavity containing element 11. A resilient ring 20 surrounds diaphragm 18. The cavity may contain inert gas. Element 10 is electrically connected via member 19 to the outer conductor of lead 21. Additional means may be provided to conduct heat from the cold junction. In assembling, element 11 may be bonded to electrode 13 by direct casting, in which a stabilized iron is placed in a graphite mould in contact with element 11. Molybdenum in an amount from 2.7 to 7 per cent may be used as a stabilizer for alpha phase. The mould is then heated in a reducing atmosphere to the melting point of the element, i.e. 920  to 1100 C. and then cooled. Alternatively bonding may be effected by fusion, in which the iron of electrode 13 is heated to 732 to 905 C. to form a thin alloy layer with element 11 having a melting point below the phase transformation temperature of the iron, and immediately fusing the layer and the electrode to provide the bond. In this case the iron may be alpha stabilized, unstabilized or gamma phase stabilized. The assembly is then annealed at from 570 to 680 C. for ten to twenty hours in inert or reducing atmosphere. The composition of element 11 may comprise lead selenium and tellurium, the selenium-tellurium constituent ranging from 25 to 27.5 per cent when tellurium is but a trace in selenium, to 35 to 38.05 per cent when selenium is but a trace in tellurium; the balance is all lead. Specifications 501,410, 578,187, 765,884, 766,999, 775,969 and 775,970 are referred to.
Patent GB-1505363-A (GB)
Title: Charged particle beam apparatus
IPC: E01C11/26
Filed: 1975-05-15
Abstract: A beam of charged particles is deflected in a closed path such as a square, for example, over a cross wire grid at a constant velocity by an X Y deflection system. A small high frequency jitter is added at both axes of deflection to cause oscillation of the beam at 45 DEG to the X and Y axes. From the time that the leading edge of the oscillating beam passes over the wire until the trailing edge of the beam passes over the wire, an envelope of the oscillations produced by the jitter is obtained. A second envelope is obtained when the leading edge of the beam exits from being over the wire until the trailing edge of the beam ceases to be over the wire. Thus, a pair of envelopes is produced as the beam passes over each wire of the grid. The number of pulses exceeding ten per cent of the peak voltage in the eight envelopes produced by the beam completing a cycle in its closed path around the grid are counted and compared with those counted during the previous cycle of the beam moving in its closed path over the grid. As the number of pulses decreases, the quality of the focus of the beam increases so that correction signals are applied to the focus coil in accordance with whether the number of pulses is increasing or decreasing.
Patent GB-258989-A (GB)
Title: Improvements in and relating to the generation of electrical oscillations
IPC: H01J25/68
Filed: 1925-08-15
Abstract: 258,989. Eccles, W. H. Aug. 15,1925. Thermionic generators. -Stationary electric wavers are maintained on wires, plates, or circuits by placing an energized ionic tube between a potential node and an adjacent current node, the cathode and/or another electrode forming a portion of the oscillatory system. As shown in the Figure a diode valve has its cathode filament energized by a battery F through a reversing switch S and choke coils x. The valve anode, which is also preferably in the form of a wire, is connected to the cathode through choke coils X and a battery E. Standing waves are produced in the Lecher system formed by the wires AB. CD. the points A - - D being current nodes, and the mid-point M a potential node. The valve is placed between the point M and the points A. C. The filamentary anode may also be heated by a battery; the electrodes then function alternately as anodes and cathodes. The reversing-switch S allows the suitable direction of heating-current to be determined by trial. The wire AB, or the wire CD, may be used individually as the seat of waves, or the parallel wires may be replaced by concentric cables, coils with distributed capacity, conducting plates, artificial lines or other assemblages of inductance and capacity. The greater the resistance of the oscillator, the greater should be the diameter of the filament, or several filaments may be connected in parallel. Several diode valves may be inserted at intervals along long wires or equivalent assemblages.
Patent GB-205900-A (GB)
Title: Improvements relating to apparatus for the measurement of colour
IPC: G01J3/46
Filed: 1922-07-27
Abstract: 205,900. Bull, A. J. July 27, 1922. Colorimeters.-The proportional composition of any given colour is determined in terms of standard colours by means of apparatus in which the rays from a source of light A are passed through a collimating lens B to apertures C in a frame D, the apertures C carrying the standard colours. The light then passes through a projection lens E through an opening F in a hollow white sphere G, preferably formed as a cavity in white plaster, wherein successive reflections result in a blending of the colours. The blended colour is viewed through the aperture H and compared with the colour of the article under test situated on the surface L. Adjustment of the apertures C is made under the colour match, the sizes of the apertures being a measure of the relative composition of the colour under investigation. The sizes of the apertures are adjusted by rack-and-pinion mechanism and scales are fitted for the direct reading of the size of the apertures.
Patent GB-228957-A (GB)
Title: Improvements in garment supporters
IPC: A41F3/02
Filed: 1923-08-14
Abstract: 228,957. Ziegler, A. M. Aug. 14, 1923. Braces &c.-An end piece for suspenders or other garment supports comprises a rubber cord 13 encircled by a braided covering 15, and a flat flexible strip 19 attached to the ends of the cord. by stitches which do not penetrate the rubber. Preferably, the stitches 21 pass through the covering 15 and one end of the strip 19, which is. wrapped round the cord.
Patent GB-584554-A (GB)
Title: Improvements relating to alternating electric current rectifiers of the selenium type
IPC: H01L21/12
Filed: 1944-10-25
Abstract: 584,554. Asymmetrically-conducting resistances. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., THOMPSON, L. E., and JENKINS, A. Oct. 25, 1944, No. 20746. [Class 37] A selenium rectifier comprises a counter electrode composed of an alloy containing about 20 to 30 per cent. thallium and other metals such for example as tin, which may be applied by spraying. Specification 556,152 is referred to.
Patent GB-796981-A (GB)
Title: Improvements in anti-tank and like mines
IPC: F42C7/06
Filed: 1956-07-04
Abstract: 796,981. Land mines. ALSETEX SOC. ALSACIENNE D'ETUDES ET D'EXPLOITATION. July 4, 1956 [July 4, 1955], No. 20763/56. Class 9(2) [Also in Group XXXII] , An anti-tank mine is provided with a shock-absorber to prevent untimely operation of the igniter 6. The shock-absorber may be a block of rubber or plastic material which is deformable under prolonged pressure, but withstands sudden impacts and vibrations. The shock-absorber may be a dash-pot as in Fig. 3 consisting of an annular trough 11 containing an incompressible fluid into which extends a piston 12 depending from the mine lid 2. Ducts 13 are provided in the piston for the escape of the fluid, which may be a grease. The dash-pot may also be used to operate the igniter when pressure is applied to the lid 2 for a long enough period, by allowing the fluid displaced by the piston to escape into a cavity above the igniter. By varying the number and dimensions of the fluid ducts and the volume of the cavity, the minimum duration of pressure on the mine to actuate the igniter can be controlled. The cavity may be sealed from the igniter by a member adapted to rupture at a given pressure in the cavity, the member then being driven forward to actuate the igniter. A supple rubber disc 19, Fig. 5, may replace the dash-pots, air being compressed in the cavity 15 as pressure is applied to the lid 2. The shock absorber may be a liquid enclosed in a flexible sheath. Specification 779,937 is referred to.
Patent GB-1291738-A (GB)
Title: Hygroscopic acrylic fibres
IPC: C08F8/00
Filed: 1970-04-30
Abstract: 1291738 Polyacrylonitrile fibres ASAHI KASEI KOGYO KK 30 April 1970 [8 May 1969] 20851/70 Heading B5B [Also in Division C3] A process for producing acrylic fibres comprises spinning a solution of a copolymer comprising (1) 10-40% by weight of a substituted acrylamide of the formula (in which R is H or -CH 3 ; and R<SP>1</SP> and R<SP>2</SP> are the same or different C 1-3  alkyl or hydroxyalkyl group, the sum of carbon atoms in R<SP>1</SP> and R<SP>2</SP> being up to 4, or R<SP>1</SP> and R<SP>2</SP> together form a pyrrolidino or morpholino structure with the adjacent nitrogen atom), and (2) at least 55% by weight of acrylonitrile, in a nitrous acid free, nitric acid solvent of concentration 55-85% by weight at a temperature of 5‹ C. or less, and coagulating the solution in a coagulation bath having a concentration of nitric acid of 45% or less, and at a temperature of 10‹ C. or less. Examples of the substituted acrylamide listed, are N,N-dimethyl-, N-methyl-N-ethyl-, N,N- diethyl-, N-methyl-N-propyl-, N-methyl-N-hydroxyethyl-, N-methyl-N-hydroxypropyl-, N- ethyl-N-hydroxyethyl-, and N,N-dihydroxyethyl-acrylamides and methacrylamides, and N-acryloyl- and N-methacryloyl-pyrrolidine and morpholine. Other monomers may also be present. The nitric acid treatment apparently hydrolyses some of the nitrile groups of the polymer, thereby improving the hygroscopic properties of the fibres obtained. Examples describe the production of fibres, starting from the monomers for the polymer, the resulting fibres being water-washed, and stretched up to 8 times their original length at 98‹ C., to produce fibres of specified denier. In Example 4 a copolymer of acrylonitrile, N-acryloyl morpholine and sodium methallyl sulphonate is produced, mixed with an acrylonitrile/N,N-dimethylacrylamide copolymer, and the mixture formed into a fibre by the above process.
Patent GB-1246345-A (GB)
Title: Electric switch arrangements
IPC: H01H73/26
Filed: 1969-04-24
Abstract: 1,246,345. Automatic circuit breakers. BAR ELEKTROWERKE G.m.b.H. 24 April, 1969 [25 April, 1968; 13 Nov., 1968], No. 20972/69. Heading H1N. An automatic circuit-breaker has two pairs of contacts 72, 73; 74, 73<SP>1</SP> arranged in adjacent compartments of a housing 13, a manual operator 6 being provided to move both pairs of contacts to the closed position and a current-responsive thermal element 31 to move one pair of contacts 72, 73 to the open position. The other pair of contacts can be opened by the manual operator 6 through an overcentre spring 77; movement of the rocker 6 to open the second pair of contacts 74, 73<SP>1</SP> causes an abutment 65 to move the first pair 72, 73 to the closed position where they are held by an overcentre spring 71 until opened by the bimetal 31. A lamp 53 is connected to contact strips 54, 54<SP>1</SP> which co-operate with the movable contact carrying members 64, 70 so as to light the lamp if contacts 72, 73 open, indicating an overload. In an alternative embodiment (Figs. 1-3, not shown) the bimetal carries one contact which latches a pivotally mounted co-operating contact. The rocker 6 then has a depending lug (9) which co-operates with the contact to restore latching after automatic release. In a further arrangement each of a plurality of interlocked push-buttons 39 operates a set of contacts as in Fig. 1, the push-buttons being arranged to re-engage the circuit breaking contacts when released and to close the other contacts when depressed.
Patent GB-814992-A (GB)
Title: Improvements relating to clutch-driven plates
Inventor: GODFREY LAWRENCE PERCY
IPC: F16D13/64
Filed: 1956-07-06
Abstract: 814,992. Friction clutches. FERODO Ltd. Oct. 7, 1957 [July 6, 1956; March 29, 1957], Nos. 21045/56 and 10402/57. Class 80 (2). A friction clutch plate having facings of frictional material on both sides has part of the friction facing on at least one side attached to leaf springs mounted on the plate, the arrangement being such that when the plate is gripped between a pressure plate and a counter-pressure plate the springs are deflected and there are areas of the facings and of the clutch plate in direct contact. In one form, leaf springs 5, Fig. 1, are secured by rivets 4 in radial gaps in a clutch plate 1. A ring 6 of friction material is riveted or bonded to the leaf springs 5, by which it is held clear of the clutch plate 1 when the clutch is disengaged. Another ring of friction material (not shown) is attached directly to the plate 1 on the side remote from the leaf springs 5. On engagement of the clutch, the friction ring 3 is pushed into contact with the radially outer parts of the disc 1.. In another form, a clutch plate 11, Fig. of star-shaped configuration, carries on one side a number of leaf springs 15 each of which supports on its opposite sides pads of friction material 16. Pads of friction material 17 are riveted on opposite sides of the points of the disc 11. On engagement of the clutch, the friction pads 16 on the leaf springs 15 are first engaged by the pressure plate, and the pads 17 on the same side are engaged as clutch engagement is completed.
Patent GB-1383390-A (GB)
Title: Elastomers reinforced with siliceous fillers
IPC: C08L23/16
Filed: 1972-05-05
Abstract: 1383390 Reinforced elastomers SOC FRANCAISE DES SILICATES SPECIAUX 5 May 1972 [6 May 1971] 21050/72 Headings C3P and C3Q A mixture of an elastomer with 5-250 wt. per cent of a siliceous filler land a vulcanizing agent also contains polyvinyl alcohol (including partially hydrolysed products) or an alkyl ester thereof in an amount which is 0À5-20 wt. per cent based on the elastomer and 0À5-10 wt. per cent based on the filler. The PVA or ester may be added in any of several specified ways, e.g. impregnated in the filler. In examples, the elastomer is butyl rubber, polychloroprene, SBR, natural rubber, natural rubber/polybutadiene mixture, nitrile rubber or EPDM; the filler is precipitated silica, pyrogenic silica, a precipitated silicate or kaolin clay; and the polymer additive is polyvinyl acetate or PVA of varying degrees of hydrolysis. Other additives in these compositions are polyethylene glycol 4000 or diethylene glycol; a paraffinic, aromatic or naphthenic oil (except Ex. 5 which contains dioctyl phthalate); and vulcanizing agents and accelerators.
Patent GB-324328-A (GB)
Title: Improvements in telephone systems
IPC: H04M3/40
Filed: 1928-07-20
Abstract: 324,328. Standard Telephones & Cables, Ltd., and Skillman, T. S. July 20, 1928. Selective distant-control systems.-A series of alternating-current, relays 102 - - 105, Fig. 1, tuned respectively to frequencies W - - Z, control normally-short-circuited direct-current relays 106 - - 109 which in turn control normally operated four-winding relays 110 - - 113, the arrangement being such that any predetermined combination of the frequencies W - -Z effects the release of one only of the relays 110 - - 113. For example, a combination XZ operates relays 103, 105, 107, 109, whereby all windings of relay 110 are deprived of current and this relay releases.
Patent GB-1142613-A (GB)
Title: Improvements relating to apparatus for generating paraboloids
Inventor: ELPHICK FREDERICK GEORGE HUMPH
IPC: B24B13/015
Filed: 1965-05-19
Abstract: 1,142,613. Grinding. ELECTRIC & MUSICAL INDUSTRIES Ltd. 19 May, 1966 [19 May, 1965], No. 21148/65. Heading B3D. Apparatus for generating a paraboloid, such as a paraboloid mirror comprises means for rotating a body on which the paraboloid may be generated about the axis O<SP>1</SP>X<SP>1</SP> of the paraboloid, a holder 2 for a tool 3, such as a grinding wheel, a carriage 1 for displacing the holder along a first straight line perpendicular to the axis, a link 9 of variable length having one end 11 fulcrumed at a first fixed point O and having the other end fulcrumed at a second point 10 movable along a second straight line QP parallel to the axis means for moving the said other end along the second line by amounts proportional to the movement of the holder along the first line, and means for displacing the holder in a direction parallel to the axis 0<SP>1</SP>X<SP>1</SP> in response to the movement of a third point 12 along the link, the third point being at any particular instant at the same distance in a direction perpendicular to the axis from a line through the first point 11 and parallel to the axis as the tool is from the axis, the link lying in a direction perpendicular to the axis when the tool is situated on the axis. The carriage 1 is movable along guideways parallel to a line QO perpendicular to the axis O<SP>1</SP>X<SP>1</SP> by a lead screw and has an arm 5 to which a lever 6 is pivotally adjustable to an angle according to the focal length of the paraboloid to be produced. The arm 6 engages a follower 8 on second carriage 7 which is thereby moved along the line QP parallel to axis O<SP>1</SP>X<SP>1</SP> and carries the second pivot 10 for the link 9. The lower end of the link is mounted in a slide 11 pivoted at O on the line OQ. The carriage 1 carries a plunger 4 loaded by a spring so that its end, i.e. the third point 12, engages the link. The plunger carries the holder 2 for the grinding wheel 3. In operation, as the carriage 1 is moved parallel to the line OQ, the arm 6 engages the follower 8 to cause movement of the carriage 7 and pivot 10 along the line QP. The movement of pivot 10 rocks the link 9 about point O so that the point 12 of the plunger moves the tool in the direction of the axis O<SP>1</SP>X<SP>1</SP> as it is moved perpendicularly to the axis so that it moves to form a paraboloid surface on the rotating workpiece.
Patent GB-136639-A (GB)
Title: Improvements in Combined Cushions and Life-belts for Aircraft and Ships or other Vessels.
Inventor: LARK HARRY
IPC: B63C9/115
Filed: 1918-12-18
Abstract: 136,639. Lark, H., and Nevell, W. H. Dec. 18, 1918. Body attachments, buoyant; buoyant fittings &c.-Buoyant cushions for the seats of aircraft, ships. &c. are adapted to be used as life-belts or jackets, by connecting two cushions, such as the seat and back cushions, by an arrangement of straps or harness adapted to secure them on the person. As shown in Fig. 1, the seat and back cushions a, b adapted for the tub seat of an aircraft, are connected by straps c, d so that by passing the head between the straps c and the arms within the straps d, the cushions take the position shown in Fig. 5. Diagonal staying- straps e are preferably provided to connect the straps c to the cushion a. The cushions are adapted to be connected to the seats on which they are used by detachable fastenings, such as press-button members h, i on tabs f, g; and the cushion a is preferably formed with one or more pockets adapted to contain flares, concentrated food, &c. Fig. 8 shows the seat and back cushions a<1>, b<1> of a ship's seat connected by straps c', d<1> with stay-straps e<1>, and Fig. 11 shows two seat cushions a<2>, b<2> connected by straps c<2>, d<2> with stay-straps e<2>.
Patent GB-737229-A (GB)
Title: A process for the manufacture of silazanes
IPC: C07F7/10
Filed: 1953-07-30
Abstract: Organosilazanes are made by reacting one or more chlorosilanes of the general formula RnSiCl4-n, where each R is an alkyl, alkenyl or monocyclic aryl radical and n has a value of from 2 to 3, dissolved in an organic solvent, with liquid ammonia under super-atmospheric pressure, the ammonia being present in amount of at least 4 mols. per mol. of silane.  The silane(s) may be added to the ammonia or the latter to the former, but preferably the silane(s) in solution in an inert solvent is added simultaneously with the ammonia to a reaction zone.  After reaction, e.g. at temperatures from 15 DEG  to 150 DEG C. and at pressures equal to the vapour pressure of ammonia at the temperature employed, the solvent containing the silazane forms a separate layer and can be separated from the liquid ammonia containing ammonium chloride.  Solvents specified are benzene, hexane, toluene and diethyl and dipropyl ethers.  Silanes specified are trimethylchloro-, phenyldimethylchloro-, dimethyloctadecylchloro-, dimethyldichloro-, ethylmethyldichloro-, vinylmethyldichloro-, diphenyldichloro-, tolylethyldichloro-, xenylmethyldichloro- and allyl methyldichlorosilanes or any mixture thereof.  Limited amounts of mono-organotrichlorosilanes may be added.  Examples are given describing the preparation of linear and cyclic polysilazanes. The silazanes are useful in the production of siloxane polymers as described in Specification 737,230.ALSO:Organosilazanes are made by reacting one or more chlorosilanes of the general formula RnSiCl4-n, where each R is an alkyl, alkenyl or monocyclic aryl radical and n has a value of from 2 to 3, dissolved in an organic solvent, with liquid ammonia under super-atmospheric pressure, the ammonia being present in amount of at least 4 mols. per mol. of silane.  The silane(s) may be added to the ammonia or vice versa, but preferably the silane(s) in solution in an inert solvent is added simultaneously with the ammonia to a reaction zone.  After reaction e.g. at temperatures from 15 DEG  to 150 DEG C. and at pressures equal to the vapour pressure of ammonia at the temperature employed, the solvent containing the silazane forms a separate layer and can be separated from the liquid ammonia containing ammonium chloride. Solvents specified are benzene, hexane, toluene and diethyl and dipropyl ethers.  Silanes specified are trimethylchloro -, phenyldimethylchloro -, dimethyloctadecylchloro -, dimethyldichloro-, ethylmethyldichloro -, vinylmethyldichloro-, diphenyldichloro -, tolylethyldichloro -, xenylmethyldichloro - and allylmethyldichlorosilanes, or any mixture thereof. Limited amounts of mono-organo-trichlorosilanes may be added. Examples are given describing the preparation of linear and cyclic polysilazanes.