baber/WOPTO huggingface dataset:
Patent GB-1423271-A (GB)
Title: Production of superconductors
IPC: H01B13/00
Filed: 1973-05-29
Abstract: 1423271 Superconductors BBC BROWN BOVERI & CO Ltd 29 May 1973 [31 May 1972] 25333/73 Heading H1A Filaments of superconductive material are formed by diffusion of a material from a layer into the material of a contiguous second layer, portions of the second layer being treated either with a substance which prevents this interdiffusion or with a substance which itself diffuses into the second layer to effectively destroy superconductivity. In the two embodiments a vanadium strip is sandwiched between two strips of CuGa and in the final processing stage a heat treatment is used to form V 3 Ga from the central strip. Before applying the CuGa strips the vanadium strip may be provided on its opposite faces with many matching narrower strips of molybenum or tantalum as diffusion barriers or with strips of tin or aluminium to effectively destroy the superconductivity of the V 3 Ga later formed. Tin or aluminium may be diffused into the vanadium either before or as it is converted to V 3 Ga. The narrower strips may be applied as wires which are rolled into the composite structure; may be applied to the vanadium overall and selectively removed by electrolytic etching or by spark erosion; or may be applied overall, selectively indiffused with an electron beam, and the non-diffused material etched away with acid.
Patent GB-1425199-A (GB)
Title: Pulsed light type control system
IPC: H04B10/25
Filed: 1973-05-29
Abstract: 1425199 Optical control systems MATSUSHITA ELECTRONICS CORP 29 May 1973 [30 May 1972] 25337/73 Heading G1A In a system for transmitting information over a radiation path, a light source emits pulses of predetermined period and a light detector converts the pulses to electric signals which activate a group of monostable multi-vibrators whose outputs are combined by a logic circuit to give a signal depending on the period of the light pulses received. The light source may be an l.e.d. which radiates pulses whose period is either t 1 , or 2 t 1 , the detector then being connected to two multivibrators as in Fig. 3 (not shown). Fig. 5a shows the detector output, while Figs. 5b and 5c respectively show the outputs triggered from the two multi-vibrators. The first multi-vibrator produces a train of pulses of duration T 1 , slightly less than t 1 , while the second multi-vibrator gives pulses of duration 2T 1 . It will be seen that the output of both multi-vibrators is substantially D.C. because as soon as each multi-vibrator turns off it is triggered on again by the detector signal. In Figs. 6a, 6b and 6c the response of the two multivibrators to detector signals of period 2t 1  is shown, and here only the second multi-vibrator produces the substantially D.C. output. The multi-vibrator outputs are connected to terminals 7 and 8 of logic transistors in Fig. 4, and when both terminals receive substantially D.C. inputs relay 12 is operated, while when only terminal 8 receives such an input relay 13 is operated. Hence one or other relay is operated in response to the period of the signal transmitted by the l.e.d.
Patent GB-1063648-A (GB)
Title: Power-operated devices having multi-speed transmissions
IPC: B23B45/00
Filed: 1964-06-19
Abstract: 1,063,648. Change-speed control. BLACK & DECKER MANUFACTURING CO. June 19, 1964 [June 20, 1963], No. 25390/64. Heading F2D. A two-speed constant-mesh gear comprises gears 30, 31 freely mounted on an output shaft 32 and biased by springs 41, 39 towards engagement with a clutch pin 35 fast with the output shaft. An eccentric 45 fast with a shaft 44 is rotatable to positions selectively disengaging the gears from the clutch pin and to a neutral position in which both gears are disengaged. The shaft 44 is axially slidable in a casing 15 and is biased to its innermost position by a spring 47. The shaft 44 is actuated by a lever 49 which is pivotally mounted by way of an integral bridge portion 51 engaging a slot 48 in the shaft so that the lever can be folded flat against the bottom of a recess 52 formed in the casing 15, in which position a projection 53 of the casing engages an opening 50 in the lever to prevent rotation of the shift shaft 44. On pivoting the lever 49 about bridge 51, lugs 54 of the lever engage a wear washer 55 in the recess 52 and raise the shift shaft 44 slightly against the pressure of the spring 47. The shaft 44 can then be rotated by the lever to clutch the selected gear 30, 31 to the output shaft, and thereafter the lever be folded flat to prevent accidental disengagement. Opposite sides of the lever are stamped H and L to indicate high and low ratios. The gearing comprises an input shaft 21 geared to an intermediate shaft 25 having gears 29, 28 constantly meshing the gears 30, 31. The arrangement is particularly intended for a two-speed electric drill; with the lever flat in the recess 52 it does not interfere with the securing of attachments to the drill for converting the drill to perform other operations.
Patent GB-947984-A (GB)
Title: Improvements in or relating to precision potentiometers
IPC: H01C17/04
Filed: 1962-07-03
Abstract: 947,984. Variable resistors. LABOBATOIRES DE PHYSIQUE APPLIQUEE. July 3, 1962 [July 5, 1961], No. 25436/62. Heading H1S . In a potentiometer which comprises a toroidal former wound with a plurality of turns of resistance wire which are stuck to the former, the ends of the winding are isolated, one from the other, by removing portions of the end turns on the side of the former remote from that over which the slider travels, over a length of the former larger than the width of the slider. The Figure shows a portion of a toroidal former 1 and the adjoining ends of the winding 2. Contact being made to the ends of the winding by terminal contacts 4 and 5 and the ends of the winding are isolated by cutting a recess 8 and removing a portion of three turns so that the slider 3 may traverse from one end of the winding to the other over the dead area provided by the severed turns without the possibility of the slider short circuiting the ends. Lug 6 provides a means of locating the winding accurately on the support 7.
Patent GB-341857-A (GB)
Title: Improvements in, or relating to, fuel distributors for furnaces and the like
IPC: C10J3/30
Filed: 1929-08-21
Abstract: 341,857. Charging gas-producers &c. GIBBONS BROS., Ltd., Dibdale Works, Dudley, Worcestershire.-(Pistorius, 0. ; 19, Uhlandstrasse, Saarbrucken, Germany.) Aug. 21, 1929, No. 25472. [Class 51 (ii).] In a mechanically moved fuel distributer for furnaces, gas producers &c., an annular sealing- trough b on the roof of the producer &c. carries a stationary drum c in which is revolubly supported a hopper e carrying distributing shoots s and rotatable by gearing k carried by the drum c, the hopper also carrying a fuel supply device n which is rotated as the hopper revolves. The fuel supply valve n, which is supplied from a stationary supply 2 is rotated by means of a bevel pinion, not shown, secured to its spindle p and engaging a bevel track r on the drum c and the hopper is rotated by the pinion k mounted in the drum c and engaging the annular rack on the hopper. The mounting of the hopper comprises a ball bearing e<1> and retaining rollers z. The shoots s are pivoted at t to the hopper in the manner shown in Fig. 2 and are enlarged towards their outlets y which are somewhat radially disposed.
Patent GB-942563-A (GB)
Title: Impulse counter
IPC: G06M1/10
Filed: 1960-07-21
Abstract: 942,563. Electric motors. RINGSDORFFWERKE G.m.b.H. July 21, 1960 [July 23, 1959], No. 25477/60. Heading H2A. [Also in Division G4] In an electromagnetic counter, the events to be counted cause the temporary closure of a contact 12 thereby applying pulses via a switch 11 to an electromagnet 3 or 6 to rotate a multi-armed rotor 1 connected to the counter (not shown). The switch 11 is adapted to direct actuating pulses alternately to the magnets 3, 6, and may comprise a multi-faced cam mounted on the shaft of the rotor 1 (Fig. 2, not shown), a multi-faced cam mounted on a separate shaft rotated by an auxiliary stepping electromagnet (Fig. 3, not shown), or a bistable transistor trigger pair (Fig. 4, not shown).
Patent GB-869827-A (GB)
Title: Soldering flux composition
IPC: B23K35/36
Filed: 1957-08-13
Abstract: A solder flux comprises, by weight, 82-95% Zn Cl2 and 5-18% of an alkali metal chloride mixture, said mixture consisting of 5-29% Na Cl, 21-61% KCl and 29-66% Li Cl.  The flux is useful in the joining of Al and its alloys to Al and its alloys and Cu, without the use of solder.  Alternatively, the flux may be sheathed in a Zn-base solder containing 0.1-3% Ag and optionally 0.3-0.5% Al.  In two modifications the flux also contains (a) NiC2, the composition then consisting, by weight, of 90 parts ZuCl2 10 parts of the alkali metal chloride mixture and 1 part NiCl2, and (b) for the joining of Si-containing Al alloys, the chlorides of Cu, Pb and Cd, the composition then consisting of 83.5% ZnCl2, 10% of the alkali metal chloride mixture, 4-6% CuCl, 0.25-1.25% PbCl2 and 0.5-1.75% Cd Cl2. U.S.A. Specifications 1,293,823, 2,299,164, 2,299,165, 2,299,166, 2,299,167 and 2,299,168 are p  referred to.
Patent GB-963540-A (GB)
Title: Process of improving the resistance of metals and metal objects to corrosion, and phophating solution suited for carrying out such process
IPC: C23C22/12
Filed: 1960-07-22
Abstract: Ferrous objects are descaled and phosphated by treatment at 50-100 DEG C. with a solution containing, with the limitation that more free than combined phosphoric acid is present, 2-7% by weight total phosphoric acid, 0.5-2% by weight zinc or manganese phosphate and 0.2-2% accelerator, followed by drying the objects immediately after this treatment or after a further treatment in a phosphating solution containing from an equal amount, to up to 50% more, free phosphoric acid than combined phosphoric acid, at a temperature below 200  DEG C., without prior rinsing.  The second solution may contain, by weight, 0.4-3% free phosphoric acid, 0.4-3% zinc or manganese phosphate, and 0.1-2% accelerator. Preferred accelerators are nitric acid, zinc and manganese nitrate, zinc chlorate, para-formaldehyde, hydroxylamine, nitromethane, chloroacetic acid, and the methyl and ethyl esters of chloroacetic acid.  If other accelerators are used (e.g. alkali metal nitrites, chromates, bichromates, or chromic acid) the coating should be rinsed after drying and then dried a second time:  rinsing may be effected with water optionally containing chromic acid with or without phosphoric acid.  The solutions may contain complex-formers, e.g. ammonium or alkali metal metaphosphates and pyrophosphates, polyphosphates and oxalates. They may be regenerated by adding oxidizing agents to reduce their iron content. Oscillations may be applied to the baths. Concentrates for making up the solutions are disclosed.
Patent GB-726320-A (GB)
Title: Improvements in radio pulse-echo locator systems
IPC: G01S13/524
Filed: 1945-10-02
Abstract: 726,320. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 2, 1945 [April 10, 1944], No. 25640/45. Class 39 (1) [Also in Group XL(c)]. A cathode-ray storage tube 20 for use in a pulse radar (see Group XL(c)) comprises a screen 22 formed of a series of conductive strips 44, a highvelocity storage gun 20b and a low-velocity takeoff gun 20c, the take-off signals being developed across a resistor 27 connected between the back of the screen.22 and earth. The operations of the tube are controlled by the synchronously rotating switches 18 and 23. During the short period when contacts 18a, 23a are engaged, signals from receiver 12 are recorded by gun 20b and gun 20c is blocked during the long period when contacts 21, 24 are engaged, gun 20b is blocked and gun 20c takes off the recorded signals during repeated scannings, the intensity being such that only a small portion of the signal is taken off at each scan. When arm 23 engages contact 71, the intensity is increased by a reduced bias on controlled grid 26 to remove any remaining signal. The storage screen 22 may be formed by coating a thin sheet of mica with platinum on both sides then scratching about 100 lines to the inch on the side to be scanned to form the elements 44. Small amounts of silver and caesium may be introduced into the tube during manufacture. The screen 22 may be curved to conform to the surface of a cylinder having an axis that passes through the centres of deflection of the two electron beams. Two frame-like or ring electrodes 62, 63 slow down the electrons after leaving the region of the second anode 61.
Patent GB-764616-A (GB)
Title: Improvements in and relating to multi-purpose machine tools
IPC: B23Q37/00
Filed: 1954-09-03
Abstract: 764,616. Multi-purpose machine-tools. MAIER, K. Sept. 3, 1954 [Sept. 5, 1953], No. 25662/54. Class 83 (3). [Also in Group XXIII] A bench-type machine-tool comprises interchangeable components which can be assembled to form a lathe or a drilling, boring, buffing, grinding, filing, milling or circular-sawing machine, &c., the components including a headstock 1, Figs. 1 and 3, having a plug 9 to engage a hole 21 in the machine-bed 11, a column 27, Fig. 5, having a similar plug 28, and a bracket 30 slidable on the column and having a similar hole 21<SP>1</SP>. The plugs 21 &c. are secured in any of the desired positions by tapered pins 22 &c. having screwed ends. The headstock has a motor 6 attached thereto by straps 7, and a faceplate 5, drill-chuck or lathe-chuck is fitted on the spindle 3, locked in an adjusted axial position by a lever 8. The tail-stock 25 and slide 15 move on bars 14 and the cross-slide 18 on bars 17. The cross-slide carries a tool-post, a boring or milling table, a workpiece or the faceplate 5. The plug 9 is rotatably mounted in the headstock so that the latter can be clamped in any angular position, either on the bed 11 or on the bracket 30. The bracket 30 is shaped to permit it to be held in the hand to form a handdrill or hand buffing-machine. Specification 655,292 is referred to.
Patent GB-994399-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: G03B42/04
Filed: 1963-06-27
Abstract: 994,399. X-ray apparatus. CHIRANA PRAHA NARODNI PODNIK. June 27, 1963 [July 18, 1962], No. 25678/63. Heading H5R. A cassette slide, e.g. for taking serial X-ray photographs comprises clamping jaws 8, 9 holding a cassette 27 therebetween and a spring 15, wherein the jaws are connected to the straight sections of a flexible tension member 13 which passes over two rollers 11, 12 and one of the jaws is connected to one end of the spring, the other end of the spring being fixed to the frame 1 of the cassette slide, the jaws being thus urged together and the assembly of jaws and cassette being urged towards an edge of the slide under the action of the spring. The rollers 11, 12 are mounted on a displaceable rule 10 which, together with the jaws, slide on rollers in grooves provided in a profiled member 2 attached to the frame. A dashpot cylinder 14 is provided within the spring and has a piston 16 which is attached to the rule 10. The cassette assembly is held in position relative to the frame 1 by a system of pawls 20, 21 which selectively engage a cut-out portion 19 provided on the rule 10, the lower half of the cassette being exposed to the X-rays with pawl 20 engaged as shown, and the upper half exposed by bodily moving the cassette assembly downward so that pawl 21 is engaged.
Patent GB-898700-A (GB)
Title: Improvements in or relating to thermostatically controlled gas valves
IPC: F24C3/12
Filed: 1958-08-11
Abstract: 898,700. Valves. CONTIGEA S.A., N.V. Aug. 11, 1958 [Aug. 14, 1957], No. 25712/58. Class 135. A gas valve device, for use particularly with gas burning cookers, comprises a thermostatically controlled gas valve in series with a cut-off valve which is opened manually by an axially displaceable operating member, this member serving also to adjust the setting of the first-mentioned valve. The cut-off valve is held in its open position by a detent which may be released by a timing device, or manually, to allow this valve to close under a spring at the end' of a cooking operation. As shown, a thermostatically controlled gas valve 1, Fig. 1, between an inlet 21 and an outlet 23 is connected to a cut-off valve 16 through a rod 17 on which this latter valve is slidable. The cut-off valve is opened initially by axial displacement of a rotatable screwed spindle member 6 acting on a bell-crank lever 14, through a hand-operated spindle 2 which has a slot and tongue connection with member 6. A nut 10 on spindle 6 is slidable in the casing and is retained in the operated position shown by a trip device. Turning of spindle 2 in this position adjusts the setting of the gas valve 1, and the operating spindle 2 may then be released. The trip device, Fig. 3, comprises a spring-urged detent spindle 28 carrying spring shoes 32 engaged by an olive 33 operated by a cable 35 on setting of a timing device (not shown), which device pulls out the cable 35 after a predetermined time to allow the cut-off valve to close. Shoes 32 are released from the olive 33 by a ramp 26. The trip device may also be actuated manually.
Patent GB-1188477-A (GB)
Title: Process for the Purification of Phenol
IPC: C07C37/86
Filed: 1968-05-29
Abstract: 1,188,477. Purification of phenol. RHONEPOULENC S.A. 29 May, 1968 [29 May, 1967], No. 25758/68. Heading C2C. A process for the purification of phenol resulting from the splitting of isopropylbenzene hydroperoxide comprising passing oxygen or oxygen-containing gas through the phenol at a pH of at least 7 at elevated temperature and then fractionally distilling the phenol.
Patent GB-765446-A (GB)
Title: Transverse edge correcting system for electrical image-reproducing apparatus
IPC: H04N9/04
Filed: 1954-09-03
Abstract: 765,446. Copying-telegraphy. TIME, Inc. Sept. 3, 1954 [Sept. 3, 1953], No. 25883/55. Divided out of 765,444. Class 40 (3). Relates to electro-optical apparatus for the production of colour separation prints of a multi-coloured original in which loss of sharpness in the reproduction of transverse edges is corrected by the circuit arrangements disclosed in Specification 765,445, in which the second differentials are derived from the signals in the yellow, magenta and cyan channels and added to the printing signals. In accordance with the invention, the black printer signal is corrected for transverse edge distortion on an ortholuminous basis by combining with it suitable proportions of the second differential signals from each of the colour channels. Thus, in Fig. 8, the signals on leads 113, 1131 and 113<11> from the differentiators associated with the yellow, magenta, and cyan channels are applied to the respective amplifiers 42, 421 and 42<11> so as to be added to the colour printing signals and are also applied respectively through resistors 320, 323 and 326 to an amplifier 49 receiving the black printer signal over lead 48. Resistors 320, 323 and 326 are selected to have the values shown, whereby the effects of the three signals are in ortholuminous relation. Specifications 761,535, 765,443 and U.S.A. Specification 2,253,086 also are referred to.
Patent GB-763401-A (GB)
Title: Improvements in and relating to electric coils
Inventor: HICKS ALBERT RONALD
IPC: H01F41/12
Filed: 1954-09-07
Abstract: 763,401. Electric coils. TELEPHONE MANUFACTURING CO., Ltd. Sept. 7, 1955 [Sept. 7, 1954], No. 25913/54. Class 35. A series of coils are wound simultaneously on insulating tubes 11 on a common mandrel 10, the inner connection of each coil being made by soldering the wire 13 to a hair-pin shaped metal strip 12 whose bight passes through a slot 11a at the end of each tube and whose under-part lies in a slot in the mandrel. When the wires have been soldered at 14, the metal strip is covered by a single strip of insulating material. The tube is of soluble plastic which is preferably thermoplastic, e.g. cellulose acetate, and winding layers are separated by layers of the same material. When winding is finished, the wires are secured by a single tape running the length of the mandrel, and covered by a layer of the same insulating material as the tubes, the free edge being stuck by wetting with a solvent, e.g. acetone. The individual coils are separated by cutting and axially compacted by heat and pressure to leave the tubes protruding at each end. At one end a washer 20 of the same material is stuck to the tube with solvent, while at the other end a rigid cheek, e.g. of bonded paper, is secured by means of a common solvent, e.g. dimethyl ketone, to a coating of adhesive material, e.g. butadiene rubber, and serves as a terminal board.
Patent GB-878981-A (GB)
Title: Improvements in glass polishing tools
IPC: B24D13/20
Filed: 1960-07-26
Abstract: 878,981. Glass ribbon polishing tools. GLACERIES DE LA SAMBRE S.A. July 26, 1960 [Aug. 8, 1959], No. 25975/60. Class 60. The felt or like disc of a rotary glass polishing tool, Fig. 1, is protected against damage resulting from penetration by the edge of a broken ribbon at the contact faces 4, between the felt 6, and its centrally driven supporting plate 1 by providing the latter with a rim 5. The rim may be either integral or attached to the plate and, continuous or discontinuous, or the edge of the felt may be protected by a peripheral series of bolts 15, Figs. 5, instead of a rim. The felt 6, in addition to its attachment to the plate 1 by adhesive, may be secured by metal or resin spikes 7 screwed into the plate and inclined in the direction of rotation and slightly towards the centre of the tool. The spikes may be orientated by providing them with circular bases which may be screwthreaded in holes in the plate or secured by screws in such holes. The plate may be provided with drainage holes 14, Fig. 4, for excess polishing composition which is fed by a duct in the driving shaft 3, Fig. 1, to the polishing surface. The rim 5 may be shaped as at 13 to deflect glass away from the tool.
Patent GB-931982-A (GB)
Title: Improvements in or relating to endless belt conveyors
Inventor: JOHNSON PAUL A
IPC: B65G21/04
Filed: 1959-07-29
Abstract: 931,982. Endless belt conveyers. GOODMAN MANUFACTURING CO. July 29, 1959, No. 26034/59. Class 78 (1). The conveying reach of an endless belt conveyer is supported on self-troughing idler rollers suspended between a pair of cables which extend longitudinally of the conveyer and which are supported from fixed overhead supports by flexible connections, such as chains, and the return reach is supported on roller assemblies suspended from the cables or the flexible connections. As shown, cables 13 are supported on structures 15 comprising spreader bars 37 suspended from the roof 28 by chains 33, and troughing idler roller assemblies 16 which are supported from the cables at points spaced from the structures 15, comprise rollers 46 mounted on pivotally connected axles the outer ends of the outermost axles being connected to the cables as described in Specification 872,166. The return run of the belt is supported by spreader units 25, spaced from the support structures 15 and from the idler roller assemblies as shown in Fig. 1, and each comprising uprights 53 suspended from the cables 13, Fig. 3, and separated by a cross member 54 on which is mounted a return idler roller 62. The uprights 53 may be provided with adjustable legs 56 so that with light loads the spreader units 25 are suspended from the cables 13 but with heavy loads the units are supported on the ground. In a modification, Figs. 5, 6 (not shown), the idler rollers for the return run of the belt are carried by the support structures 15, in which case the spreader bars 37 may only be provided at positions along the cables other than those at which a support structure is provided. In a further modification, Figs. 9, 10 (not shown), a troughing idler roller assembly is provided at each point at which the cables 13 are suspended from the roof by the chains 33. Specification 931,983 also is referred to.