baber/WOPTO huggingface dataset:
Patent GB-817903-A (GB)
Title: Improvements in or relating to tuning circuits for operation at very high frequencies
Inventor: COCKING THOMAS BRADFORD
IPC: H01F27/00
Filed: 1956-05-25
Abstract: 817,903. Variable capacitors; circuit assemblies. ELECTRIC & MUSICAL INDUSTRIES Ltd. May 27,1957 [May 25,1956], No. 16190/56. Class 37. [Also in Groups XL (b) and XL (c)] A variable capacitor for use in a V.H.F. tuning circuit comprises two spaced conducting elements 2, 3 of a transmission line, constituting the stators of a split stator capacitor, a tuning member 6 adjustable axially of said line, and a dielectric 1 having a temperature coefficient of expansion and a permittivity which varies with temperature so as to neutralize frequency changes in the circuit caused by temperature variation. A hollow cylindrical member 1 of ceramic, such as steatite, supports at one end two silver line elements 2, 3 which are separated by longitudinal gaps; and a cup-shaped tuning plunger 6 of silver-coated brass is adjustably mounted in the lower part of said cylinder. Introduction of a desired length of the plunger between the elements provides a capacity between each element and the plunger, and this is maintained constant on the longitudinal expansion of members 2, 3 and 6 by the compensating properties of the dielectric. Additives, e.g. calcium, barium, or magnesium titanate, cause the steatite to have a negative positive or zero coefficient of expansion, and a permittivity which decreases as its temperature increases. In an alternative construction, the line elements and the tuning member are tapered. Quartz, glass, or plastic dielectric may be used in place of ceramic. The capacitor is screened by a metallic cylinder 12. Assemblies. Fig. 2 shows the capacitor, with the screen 12 removed, embodied in an oscillator circuit. The circuit comprises, in addition to the variable capacitor, inductors LI, 12, output coil 17a and resistor Rlmounted between metal discs 7, 8, fixed capacitors C1, C2, C3 formed as insulating bushes whose inner surfaces have a metal coating and mounted within holes in the disc 8, and a valve housed within a screen 13 arranged above the disc 7. The circuit also comprises two further indicators, not shown.
Patent GB-761915-A (GB)
Title: Improvements relating to collars for wear
Inventor: BIHALY LAJOS
IPC: A41B5/00
Filed: 1954-06-01
Abstract: 761,915. Collars for personal wear. TRUBENISED (GREAT BRITAIN), Ltd. May 31, 1955 [June 1, 1954], No. 16192/54. Class 141. A one-piece turn-down collar has a predetermined fold-line with its central portion curved concavely towards the collar band and its end portions straight. Specification 689,778 is referred to.
Patent GB-143421-A (GB)
Title: Improvements in machines for preparing collars, collar bands, cuffs and the like forstitching
IPC: A41H33/00
Filed: 1919-11-07
Abstract: 143,421. Wade, F. W. Nov. 7, 1919. Folding edges of sheet material.-Relates to machines for folding the edges of blanks for collars, cuffs, &c., and of the class in which the adjustable pattern-carrying blocks are operated for extension or retraction simultaneously with the upward and downward movements of the machine head, and consists in means for moving these blocks by a cam-device actuated by the movement of the machine head as it is lowered on to, and raised from, the work table. The arm a<1> carrying the head a is pivoted to the table by a bracket b. The pattern consists of a centre portion p<1>. mounted .on a block c secured to a plate a<2> on the head a, and two side portions p<2>, p<3> mounted on blocks having adjustable slotted connexions to angle-pieces d<2>, f<2> on plates d, j slidable between bars a<3> on the plate a<2> and having reduced portions d', f<1> sliding in a recess c<2> in the block c. A bar q having cam-surfaces q', q<2> is pivotally connected to the bracket b, its end q<3> being slidable in a vertical groove c' in the block c, so that when the arm a<1>, with the head a, is moved down, the cam-surfaces q<1>, q<2> act on the ends d<1>, f<1> of the plates d, f to move them outwardly against a spring s to extend the side portions of the pattern, which are moved inwardly by the spring s when the head is raised. To ensure accurate adjustment of the side portions for different sizes of articles, the slotted connexions between the angle-pieces d<2>, f<2> and the patternsupporting blades are provided with scales or markings.
Patent GB-623981-A (GB)
Title: Improvements in or relating to tables
IPC: A47B39/02
Filed: 1947-06-19
Abstract: 623,981. School tables. EMBRU-WERKE AKT.-GES. June 19, 1947, No. 16213. Convention date, June 22, 1946. [Class 52 (iii)] A school table has two hollow supports each comprising two fixed concentric tubes 2, 3 the inner one 3 carrying a nut 4 for a screw-threaded spindle 5 provided with a bearing 6. The upper part of the spindle is rotatably mounted within a U-shaped carrier 7 resting on the bearing 6. This carrier 7 is secured-to a movable tube 9 disposed between the fixed tubes 2, 3. The screw - threaded spindles are connected by a shaft 14 through bevel gears 8, 15 and are actuated simultaneously by a handle attached to a square end 16 of a driving spindle.
Patent GB-1272096-A (GB)
Title: Apparatus for testing fluid flow through a nozzle
Inventor: COOK PAUL DOUGLAS
IPC: A01M7/00
Filed: 1969-03-27
Abstract: 1,272,096. Testing nozzles. MAY & BAKER Ltd. 23 March, 1970 [27 March, 1969], No. 16242/69. Heading B2F. [Also in Division Fl] An apparatus testing the flow of liquids through nozzles comprises a source of liquid under pressure, 10, a manifold in which are mounted a standard nozzle (not shown) and one or more nozzles to be tested 36 so as to be in communication with said source of liquid, a valvehead 27 for interrupting the flow of liquid to the nozzles 27, and separate containers 45 to receive liquid from each of said nozzles. As shown tank 10 is pressurised via a connector (not shown) by means of a hand pump 17. The nozzles are connected to the liquid tank via bores 31 and annular chamber 35. Alternatively the bores 31 can be replaced by a conically shaped chamber. In a modification of the apparatus the nozzles are mounted on a straight tube connected at both ends to a source of liquid under pressure. The apparatus is used by connecting all the nozzles to the source of liquid for a set period of time and then comparing the volumes of liquid passing through each of the nozzles.
Patent GB-529525-A (GB)
Title: Improvements in or relating to alternating current inductance bridges
IPC: G01R17/00
Filed: 1939-06-02
Abstract: 529,525. Inductance and resistance measurements; condensers. SULLIVAN, Ltd., H. W., and GRIFFITHS, W. H. F. June 2. 1939. No. 16252. [Class 37] In an inductance bridge of the ''Owen" type a number of fixed resistances r1 ... r6, Fig. 5, in one arm and a number of fixed capacitances C1 ... C6 in an adjacent arm are simultaneously selected in pairs r1C1 ... r6C6 by a switch f, the values preferably being such that the products r1C1 ... r6C6 are always powers of 10 or of the reciprocal of 10. The third arm contains the inductance X, of which the inductance Lx and effective resistance Rx are to be measured, and the fourth arm contains an adjustable decade resistance R and an adjustable decade condenser CL in series. Then Lx = rCR and Rx = rC/CL, the bridge being direct reading for both Lx and Rx with the position of the decimal point determined by the product rC selected by the switch f. The condenser CL may be formed with a number of decade switch dials h1, h2, h3, Fig. 2, in series, the "units" dial h1 having ten condensers each of 1 microfarad, the "tens" dial h2 having ten condensers each of 0.1 microfarad and the "hundreds" dial having ten condensers each of 0.01 microfarad. Since the condensers are in series, clockwise rotation of the switch arm decreases the capacitance but increases the reactance by equal increments. The dials may therefore be graduated in reactances at a particular frequency or in reciprocals of capacitance. The range may be extended by means of a continuously variable air condenser h4 having contacts k1, k2 which short-circuit the condenser in its position of maximum capacitance. In a modification, Fig. 3, condensers t1 ... t5 and u1 ... u5 having the reactances shown at a particular frequency are connected in series between plug blocks p1 ... p6 and q1 ... q6 between which and co-operating plug blocks n1, n2 and o1, o2 are inserted plugs so as to select one or more condensers in series in each dial. Alternatively condensers may be connected in series between plug blocks so arranged that plugs may be inserted to short-circuit any or all of the condensers.
Patent GB-791681-A (GB)
Title: Method for purifying or sterilising water or sewage
IPC: C02F1/76
Filed: 1956-05-25
Abstract: Chlorous acid is prepared by treating its salts with hydrogen from an ion exchange process.  In an an example, a 10 per cent solution of hydrochloric acid was added to a resinous ionexchange material such as one sold under the Registered Trade Mark "Lewatit" or "Amberlite" and the material washed to remove any chlorine present.  After an hour, a 1 per cent aqueous solution of sodium chlorite was passed through the material to produce a stable 1 per cent solution of chlorous acid. Specification 791,680 is referred to.ALSO:Water or sewage is purified or sterilized by adding free chlorous acid thereto, preferably in aqueous solution.  The chlorous acid is prepared by treating its salts with hydrogen from an ion exchange process.  20 ml. of a 1 per cent solution thus prepared destroyed the bacteria present in 100 litres of river water in 5 minutes.  The action can be accelerated by adding acidic substances or retarded by basic ones.  Specification 791,680 [Group III], is referred to.ALSO:Water is sterilized by chlorous acid, preferably in aqueous solution, prepared by treating its salts with hydrogen in an ion-exchange process.  20 ml. of a 1 per cent solution of the acid thus prepared destroys the bacteria present in 100 litres of river water in 5 minutes.  The action can be accelerated or retarded by adding acids or bases.  Specification 791,680, [Group III], is referred to.
Patent GB-883672-A (GB)
Title: Improvements relating to the production of drawings for photographic or photo-mechanical reproduction
Inventor: DYKE LESLIE ALEXANDER
IPC: G03F1/90
Filed: 1959-05-12
Abstract: 883,672. Drawings for photographic or photomechanical reproduction. SMITH & SON (ALACRA) Ltd., W. H. May 12, 1960 [May 12, 1959], No. 16285/59. Drawings to Specification. Class 98(2). A line or other part of a drawing preformed on a strip or sheet of adhesive coated transparent material is stuck on to a drawing sheet, conveniently a transparent plastic, at the appropriate position for such line or other part. The whole of the parts of a drawing including lines, letters, numerals, phrases or diagrams may be so stuck on or some parts may be added otherwise, and the completed drawing sheet may be photographed for eventual lithographic reproduction, business forms may be so produced. The sticking on of such a line has an advantage over drawing one in ink in that the latter may be of uneven width especially at the beginning and end.
Patent GB-1478289-A (GB)
Title: Electromagnetic fluid pressure transducers
IPC: G01L1/08
Filed: 1974-07-05
Abstract: 1478289 Force balancing measuring systems LUCAS INDUSTRIES Ltd 5 July 1974 [5 April 1973] 16306/73 Heading G1N In a force balancing arrangement for measuring pressure wherein the restoring force is produced by an armature 23 in response to the current in windings 75, 76, this energizing current is intermittently reduced by 80% by a pulse train P fed to transistor T and resistor R in parallel with windings 75. 76 which makes the transistor conductive with each pulse. The varying current in the windings reduces hysteresis effects in the armature 23.
Patent GB-833412-A (GB)
Title: Improvements in and relating to fluorescent lamp fittings
Inventor: HULCOOP FRANK ALBERT
IPC: F21V17/00
Filed: 1958-05-21
Abstract: 833,412. Lighting fittings for tubular lamps. EKCO-ENSIGN ELECTRIC Ltd. May 21, 1958, No. 16394/58. Class 75(4) [Also in Group XXV] A fitting for one or more elongated fluorescent Lamps consists of a main support 10 which may be of inverted box form and an auxiliary support 13, carrying the lamp control elements e.g. choke, capacitor and starter switch, pivoted at one end to the main support and having releasable retaining means e.g. a slot engaged by a bolt and wing nut 15 on the main support, at the other, a lamp holder 14 being detachably mounted at either end of the main support. A reflector 23 may be carried by means of two spring- loaded turnbuckles 21, 22 on the underside of the auxiliary support.
Patent GB-440486-A (GB)
Title: Improved manufacture of pure alumina
IPC: C01F7/28
Filed: 1934-06-01
Abstract: Siliceous aluminiferous materials such as clay, kaolin, or leucite are treated with sulphurous acid, the solution obtained is decomposed by heating, preferably by means of steam, the raw alumina thus precipitated is desulphurized by calcination at a temperature below 900 DEG  C., say at 450--550 DEG  C., and then brought into solution as aluminate by soda lye, the aluminate solution being decomposed to obtain pure alumina.  If dilute solutions of aluminium sulphite are used, their decomposition by means of steam together with prolonged boiling of the solution gives a raw alumina containing very little sulphur, and the calcination step may advantageously be carried out in the presence of inert or reducing gases, for instance in a current of hydrogen.  Residual sulphur compounds may be removed by alkaline agents before the treatment with soda lye.  The Specification as open to inspection under Sect. 91 comprises also the following subject-matter.  The raw alumina need not be calcined, but may be boiled in a solution of sodium or calcium chloride to remove sulphur, and residual sulphur be removed by caustic lime, soda, or ammonia; and decomposition of the sulphite p  solution may be effected at 75--95 DEG  C., when the raw alumina is to be calcined, and the calcined alumina may be dissolved in weak aluminate lye at 20--50 DEG C., preferably with admission of air. This subject-matter does not appear in the Specification as accepted.
Patent GB-612683-A (GB)
Title: Improvements in or relating to a metal working machine
IPC: B21D25/02
Filed: 1946-05-30
Abstract: 612,683. Angular bending ; stamping. GREEN, L. B. May 30, 1946, No. 16449. [Class 83 (iv)] In a machine for bending flanged sheets, the sheet is clamped between relatively reciprocated dies and wing members on one die are swung to effect bending whilst the flange portion is confined between projections on the wing members and expansible portions of the die. A sheet 11 with flanges 14 is clamped between a stationary die 18 and a die 19 moved by a ram 17. Wing members 20 pivoted on pins 27 to the die 19 are swung by power-actuated links 26a jointed to casings 26 carrying spring-urged rollers 28. To prevent buckling of the flange during bending, the wing members 20 carry projections 23 supporting the outside of the flange and the die 19 is constructed as in Fig. 5 with a spring- mounted work-engaging portion 32 and movable edge portions 33. As the die 19 advances, a gap 37 between the die portions is decreased by compression of springs 38 and wedges 42 are advanced to expand the edge portions 33 which press the flanges against the projections 23. The wedges 42 are backed by rubber blocks 44 to prevent excessive pressure. In Fig. 8 (not shown), the portions 33 are shaped to hold double flanges.
Patent GB-601318-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/12
Filed: 1945-06-29
Abstract: 601,318. Friction clutches. WULLSCHLEGER, A. June 29, 1945, No. 16583. Convention date, June 16, 1944. [Class 80 (ii)] In a clutch having a resilient split ring on one member expanded into frictional contact with the other member by balls or other motiontransmitting elements housed in radial channels in the first member, at least one of the elements in each channel is out of alignment with the others by an amount which may be adjusted to compensate for wear of the clutch surfaces. As shown, the clutch comprises a member 2 keyed to the driving shaft 1 and in driving relation, through a pin 4, with a gapped resilient ring 6 carrying friction pads 7 coacting with a driven member 19 journalled on the member 2. The outer end of the pin 4 engages between the ends of the ring 6, and its inner end projects into a slot 5 in an operating sleeve 3 to limit the movement of the latter. Sets of three balls 10, 11, 12, the first two housed in radial bores 8 in the member 2 and the third mounted in staggered relation between them, transmit the longitudinal movement of the sleeve 3, acting through an incline 13, to the ring 6. A member 15 axially supporting the ball 12 can be screwed along the member 2 for clutch adjustment and is provided with a dustexcluding seal 18 coacting with the member 19. The member 19 may be the driving member, and the friction pads 7 may be dispensed with, the ring 6 then coacting directly with the member 19. Either or both of the balls 10, 11 may be duplicated or motion-transmitting elements consisting partly of balls and partly of elements of other shapes may be used.
Patent GB-243637-A (GB)
Title: Improvements in and relating to paper making machines
IPC: D21F9/02
Filed: 1925-06-27
Abstract: 243,637. Devine, J. A. June 27, 1925. Suction apparatus; shaking apparatus for wire cloths.-To prevent the wire cloth 1 from cutting into the wooden tops of the suction boxes 4, a slow lateral to-and-fro movement is imparted to the wire cloth by means of a roller 6 one bearing of which is pivoted while the other is mounted to slide in a standard 17 and is reciprocated by a link 20 driven from a pin on a worm wheel 13 which is rotated by a worm 12 on a rotating shaft 11. A chain 22 drives the shaft 11 from a roller 5 driven by the wire cloth 1.
Patent GB-895275-A (GB)
Title: Metal cleaning and phosphating composition
IPC: C23C22/00
Filed: 1959-05-14
Abstract: A composition for simultaneously cleaning and phosphating a metal surface contains an ethylene oxide condensation detergent, a hydrocarbon solvent for grease and oil, an aqueous acidic phosphating solution and an emulsifier.  Specified ethylene oxide condensates have the general formulae RCOO(C2H4O)nH where R is a C11-19 alkyl radical and n = 7-13 and <FORM:0895275/III/1> where R is a C9-14 alkyl radical and n = 7-14. Suitable hydrocarbon solvents are kerosene and aromatics of coal tar or petroleum origin.  Suitable emulsifiers are alkali metal soaps, petroleum sulphonate, alkyl sulphate or sulphonate, esters of alkali metal neutralised sulphosuccinate, compounds having the general formulae RCON(CH2CH2O)xH2 and RN(CH2CH2O)xH2 where R is an alkyl group and x = 5 - 50, and compounds having the general formula RCOO(CH2CH2O)xH where R is an alkyl group and x = 5 or 6 or 14-50, or R is an alkyl group not containing 11-19 carbon atoms and x = 5-50.  The composition may also contain tri- and hexa-valent chromium ions and molybdenum ions.ALSO:A composition for simultaneously cleaning and phosphating a metal surface contains an aqueous acidic phosphating solution, a hydrocarbon solvent for grease and oil, an emulsifier and an ethylene oxide condensation detergent.  Specified phosphating solutions comprise phosphoric acid together with tetrasodium pyrophosphate or trisodium phosphate.  Suitable hydrocarbon solvents are kerosene and aromatics of petroleum or coal tar origin.  Suitable emulsifiers are alkali metal soaps, petroleum sulphonate, alkyl sulphate or sulphonate, esters of alkali metal neutralised sulphosuccinate, compounds having the general formulae RCON (CH2 CH2O)x H2 and RN (CH2 CH2O)x H2 where R is an alkyl group and x=5-50, and compounds having the general formulae RCOO (CH2 CH2O)xH where R is an alkyl group and x=5 or 6 or 14-50, or R is an alkyl group not containing 11-19 carbon atoms and x=5-50.  Specified ethylene oxide detergents have the general formulae RCOO (C2H4O)n H where R is a C11-19 alkyl radical and n= 7-13, and <FORM:0895275/II/1> where R is a C9-14 alkyl radical and n=7-14.  The composition may also contain tri- or hexa-volent chromium ions and molybdenum ions.  Steel surfaces may be treated.
Patent GB-145464-A (GB)
Title: Improvements in emergency cut-off and fluid delivery regulating valves
IPC: F16K17/32
Filed: 1920-06-19
Abstract: 145,464. Samain, P. Oct. 19, 1917, [Convention date]. Valves closing with rush of fluid; valves controlled by pilot or relay valves; closure members. -Relates to a volume flow-regulating valve which is adapted also to close automatically in the event of a water-pipe bursting. In the arrangement shown in Fig. 1, the valve 7<a> is operated by pistons 7, 8 subject to pressure from the piping through the passages 11, 14, and 15. If the demand is excessive the pressure falls near the valve and in the piston chamber 17 so that the valve lowers and restricts the passage. Should the pipe burst, the rush of fluid acting on the baffle pendulum 2, in either direction, actuates the stirrup 3 and the double-piston auxiliary valve 4, 5 which opens the passage 13 to pressure, and the passage 14 to exhaust at 16 whereupon the main valve 7<a> is closed. The valve can be opened or closed by operating the stirrup 3 and auxiliary valve 4, 5 by hand. The pistons 7, 8 may be disposed vertically, as shown, or horizontally, and may be of the differential type, or a single piston may be used. In the latter case, a conical throttle device is used to control the outflow of water from behind the piston to give a slow closure without shocks. The packing of the actuating-pistons, in one form, consists of divided leathers which are lubricated by grease supplied through a tube from outside. According to the Specification as open to inspection under Sect. 91 (3) (a), the valve may comprise a lift tubular closing-member packed by a cup-leather and a springy bronze tubular member acted on by springs disposed within the flow passage. A form of valve is shown in Fig. 9 (Cancelled), in which the pendulum 67 is connected directly to the main valve member 64, which itself forms the baffle, and is held back by compression and tension springs 71, 72 acting through a pivoted beam 70. This valve may also be actuated by supplying or exhausting fluid to and from the piston chamber 63 through the passage 73. This subject-matter does not appear in the Specification as accepted.
Patent GB-545017-A (GB)
Title: Improvements in and relating to spinning or twisting spindles
IPC: D01H1/244
Filed: 1940-11-18
Abstract: 545,017. Spinning or twisting spindles. AKT.- GES. BROWN, BOVERI &. CIE. Nov. 18, 1940, No. 16629. Convention date, Nov. 17, 1939. [Class 120 (ii)] [Also in Group XXXV] An individually electrically driven spinning or twisting spindle, resiliently supported upon the spindle rail 18 and provided with a foot - step bearing 4 below the rail 18 and a motor having an outwardly disposed rotor 8 which acts as the support for the spool carrier, has the centre of gravity of the spool in position practically coincident with that of the rotary mass without the spool and has the upper guiding bearing 2 of the spindle shaft 1 in the horizontal plane containing the centre of gravity of the rotating masses. The spindle bearings 2, 3 and the foot-step bearing 4 are mounted within a tubular casing 5 which supports also the internally disposed stator 7. An upwardly flared base cover 13 for the piston is mounted upon the casing 5. A stationary bell-shaped cover 20 may be provided to reduce frictional resistance of the air.