baber/WOPTO huggingface dataset:
Patent GB-419764-A (GB)
Title: Method and apparatus for electrodeposition
IPC: C25D1/04
Filed: 1933-07-07
Abstract: 419,764. Electrodeposition of metal. ANACONDA COPPER MINING CO., 25, Broadway, New York, U.S.A.-(Assignees of Yates, C. E. ; 122, Madison Avenue, Perth Amboy, New Jersey, U.S.A.) July 7, 1933, No. 19322. Convention date, July 13, 1932. [Class 41.] Metal is deposited on a lead lining 16 on the circumferential surface 15 of a rotating drum partially immersed in the electrolyte and is stripped in sheet form on emergence. A rubber web 28 is mounted on the drum so as to separate the main body of the electrolyte from that in contact with the side walls 14 in order to prevent deposition on the latter, this object being furthered by the provision of auxiliary electrodes 34 maintained at a lower potential than the cathode drum. A certain amount of current may flow from the anode to the auxiliary electrodes. The anodes 20 are provided with end shields 25. The lining 16 is provided at its inner face with a flange having passages 27 and a rib 29 ; the web 28 is clamped between this and a ring 30 so as to leave a circumferential space 26. The space 26 is closed below the electrolyte level by endless rubber belts 31 passing over pulleys near the axis ; the belts 31 prevent excessive deposition at the edges of the sheet. The auxiliary electrodes 34 are mounted on insulating plates 35 on the walls of the cell. Alternatively they may be in the form of rings mounted on the end walls of the drum, contact being made thereto by brushes. The cathode surface may be mechanically treated between successive immersions by the means described in Specification 398,759. A modification in which the web 28 is mounted flush with the outside of the lining 16 is not suitable for such treatment. In a battery of depositing tanks connected in series, the auxiliary electrodes of each tank are connected to a point in the electrical system at a lower potential than the cathode e.g. to the cathode of another tank nearer the negative end, an independent connection being necessary for those of the last tank only. The drop of voltage from cathode to auxiliary electrodes may be controlled by the introduction of resistances, a suitable value being ¢ volt for a depositing voltage of 2¢. The anode may consist of curved segments with a gap at the lowest point through which compressed air is injected to promote flow of electrolyte between the anode and cathode.
Patent GB-118967-A (GB)
Title: An Improved Resilient Wheel.
Inventor: STUART JOHN
IPC: B60B9/10
Filed: 1917-12-31
Abstract: 118,967. Stuart, J. Dec. 31, 1917. Spring wheels with continuous outer rigid ring and rubber-ring and like cushions.- In spring wheels of the kind in which the outer and inner rigid rings are formed with corresponding cavities to receive segmental cushions connecting the rings, the cavities 7 in the inner ring are open on one side, and a removable side plate 29 is fitted with blocks 32 adapted to close the openings and is secured in position by bolts 28 and nuts 31. A bonding rim 6 on the inner ring is formed with recesses corresponding to the cavities 7. The cushions may be of the double-convex shape shown or of double-concave shape, and may be laminated.
Patent GB-810298-A (GB)
Title: Apparatus for making pneumatic tyres
Inventor: TREVASKIS HENRY WILLIAM
IPC: B29D30/08
Filed: 1955-07-05
Abstract: 810,298. Tyre building machine. DUNLOP RUBBER CO. Ltd. June 26, 1956 [July 5, 1955], No. 19338/55. Class 144 (1). A machine for winding a cord tyre of the form described in Specification 786,162 comprises a former 4 having a transversely convex peripheral winding surface 6 which is symmetrical with respect to the rotational axis 3 of the former, and an arm 12 having one end 25, to which the cord 28 is fed, movable to and fro transversely across said winding surface, cam means 19 effecting movement of the arm 12 during rotation of the former to lay the cord in loops extending obliquely around the former from one side of the winding surface diametrically to the other. As shown, the former is mounted on a shaft 3 supported cantilever fashion in a housing and rotated by means 16 which drives also a shaft 17 extending from the housing 2 at right angles to the shaft 3. The shaft 17 carries a flywheel 18 on the inner surface of which is provided an annular cam track 19 in which is engaged a follower 20. The follower 20 is rotatably mounted on one end of a lever 21 which is pivoted intermediate its ends on the housing 2 and has its other end slotted for adjustable clamping engagement with one end of a link 23 the other end of which is connected to a rack 14 slidably mounted on the bedplate 1 of the machine. The rack 14 operates a pinion 13 attached to one end 11 of an arcuate arm 12 the other end of which carries a cord feeding finger 24, 25 which is adjustable for length and angular disposition relative to the arm 12 to accommodate formers of different shape. The end 11 of the arm 12 is rotatably mounted for oscillation about a boss 9 upstanding from the bedplate 1 immediately below the geometric centre of the former 4, and the cord 28 is guided to the finger end 25 by pulleys 29 on the boss 9, and pulleys 26, 27 on the finger 24 and arm 12. The respective drives to the shafts 3 and 17 are such that for one complete oscillation of the arm 12 effected by the cam 19, the former 4 makes either just over, or just under, one complete revolution so that a progressive winding results. The former shown is of truncated spherical shape with flared ends 7, 8, and the cord is laid in circles thereon to approach and leave the edges of the surface 6 tangentially. If it is desired for each loop to have an arcuate portion extending around each edge 7, 8, the ring cam is provided with corresponding dwell portions concentric with the rotational axis of the cam.
Patent GB-941865-A (GB)
Title: Tilted axle caster
IPC: B60B33/00
Filed: 1962-05-21
Abstract: 941,865. Castors. CONSTELLATION HARDWARE CANADA Ltd. May 21, 1962 [May 25, 1961], No. 19417/62. Heading A4U. A castor has a body part 21 with hub 23 for swivel shaft 24, the body part being of flattened cup form with vertical wall 30 and annular wall 49 with interned lip 49A and a castor wheel 22 of similar flattened form having a bearing sleeve 43 which embraces an axle 33 with head 33H embedded in wall 30 and has an annular groove 48 which is engaged by lip 49A. In a modification Fig. 10 the sleeve 43 has a lip 349A engaging a groove in the axle 33. In another embodiment the axle has an uplet annular flange and the bearing sleeve a corresponding internal annular groove. In a further modification Fig. 13 the end thrust between sleeve and axle is taken by engagement of the end of the bearing sleeve 43 with the head 33H of the axle and the axle has an undercut bore 648 while the castor wheel has a tubular wall 649 with outturned flange 649A which engages the bore to hold the parts in assembled relation.
Patent GB-1194553-A (GB)
Title: Improvements in or relating to the Fixing of Yarn Guides in Textile Machines
Inventor: WARRINGTON CLIFFORD
IPC: B65H57/26
Filed: 1967-04-27
Abstract: 1,194,553. Yarn guides. T.M.M. (RESEARCH) Ltd. 14 June, 1968 [27 April, 1967], No. 19505/67. Headings D1D and D1M. A yarn guide comprises a ceramic bush 2 over which is forced a securing washer 1 of nylon.
Patent GB-1098938-A (GB)
Title: Process for the production of mixtures of lactams, catalysts and cocatalysts
IPC: C08G69/18
Filed: 1965-05-10
Abstract: Heat polymerizable lactams which can be stored below 50 DEG  C. and polymerized on heating without further additions are obtained by intimately mixing in the solid state at below 50 DEG  C. (1) a metal salt of a lactam or mixture of such salt and lactam, (2) a lactam carrying an electrophilic N-substituent or a mixture thereof with a lactam and (3) a lactam in such proportions that the mixture contains 0.01 to 5 mole per cent of each of the salt and the N-substituted lactam.  Ingredient (1) may be obtained by adding a conventional anionic catalyst to a lactam or excess thereof and (2) may be similarly obtained from lactam and such compounds as isocyanates, carbodimides or carboxylic acid derivatives capable of acylating lactams.  Specified lactams are decyllic and undecyllic lactams and laurolactam, which is used in the example. The mixture may also contain a regulator, e.g. acetamide or benzamide, and may be polymerized at 140 DEG  to 300 DEG  C.
Patent GB-1118943-A (GB)
Title: Burner
IPC: A23L3/3418
Filed: 1966-05-04
Abstract: <PICT:1118943/C1/1> A gas generator in which free oxygen containing gas entering at 28 and fuel entering at 34 are reacted together in catalytic bed 88, for use for example in reducing the oxygen content of the atmosphere in a food storage system (Fig. 1, not shown), comprises fuel feeding and control means 32 for adding to the free oxygen containing gas a predetermined quantity of fuel which is less than the stoichiometric quantity corresponding to the oxygen content of the gas entering at 28, means for example, gas preheating section 44 for heating the catalytic bed and temperature control means including temperature sensor 90 for varying the output of the heating means in response to the temperature of the catalytic bed. The fuel feeding and control means may include oxygen analyser 92 arranged in the incoming gas stream and operatively connected with valve control means 94 for the fuel line.  The preheating section 44 may comprise an open element type electric heater which has wire element 72 wound about insulating spools 52 threaded on support rods to form columns 50. The fuel may be hydrogen, alkanes of up to 5 carbon atoms natural gas, water-gas.  Catalysts mentioned are Pt, Ir, Pd deposited on alumina. In alternative embodiments, instead of preheating the gas stream the catalyst bed may be heated by an element within the bed; temperature-sensing means 90 may be downstream of the bed instead of within it; the reactor may be horizontally arranged and of rectangular cross-section.
Patent GB-130531-A (GB)
Title: Improvements in Mountings for the Front Wheels of Motor Trucks.
Inventor: SHELER JOHN CALVIN
IPC: B62D7/00
Filed: 1918-11-29
Abstract: 130,531. Sheler, J. C., and Austin, R. B. Nov. 29, 1918. Swivelling wheel hubs and the like and intermediate connexions therefor.-The front wheels of a motor-truck are driven by means of universal joints, and are mounted in frames connected by cross members in operative connexion with the steering members. The hubs 7 are provided with sleeves 8 and trunnions 9 bearing in frames 5 which are connected by transverse pivoted members 10. The members 10 are depressed and are pivoted to braces 11 forming supports for turntables 12 to which the axle casing 13 and springs 14 are secured. The steering member 19 is connected to one of the members 10 by a pin 21 and slot 20. The wheels are driven by universal joints comprising pairs of pivoted arms 22 provided with ball joints 23 and connected by knuckle joints 24 to the axles and the wheel heads.
Patent GB-1371237-A (GB)
Title: Folding ladders
IPC: E06C1/383
Filed: 1972-04-27
Abstract: 1371237 Folding ladder A H SAMWAYS [trading as A SAMWAYS & SONS] 27 April 1972 [9 June 1971] 19796/71 Heading E1S A ladder collapsible in its own plane, having rungs 3 pivoted to stiles 2 by pins 4 perpendicular to the plane of the ladder, is secured in its unfolded position of use by a strut 6 which is pivotally connected at its ends to a rung and a stile and has one end slidable longitudinally of the rung or stile (as shown) to permit collapse of the ladder, the strut being locked in the unfolded position by a further strut 7 pivoted e.g. on the pin 4 and engaging the strut 6 with its free end. The strut 7 may engage a channel lug 11 on the strut 6, or may have a bifurcated end to engage a notch in the strut 6. The pivot pin 8 or 9 of the strut 6 slides in a slot 10 in the rung or stile. Such strut arrangements may be provided on both sides of the ladder.
Patent GB-1206212-A (GB)
Title: Improvements in or relating to d.c. converters and inverters
IPC: H02M7/44
Filed: 1968-08-26
Abstract: 1,206,212. Automatic voltage control. SIEMENS A.G. April 26, 1968 [April 28, 1967], No.19812/68. Heading G3R. [Also in Division H2]  In a D.C./A.C./D.C. converting system wherein transistors T s1,  T s2  Fig.1 are controlled to conduct alternately current from a D.C. source whereby to apply a rectangular A. C. waveform to a transformer T r1,  the symmetry of voltage half cycles is maintained by a control circuit, including saturable reactors, which also provides automatic regulation of the transformers' rectified voltage to a load R L  . Commutation. The control circuit includes square loop saturable reactors D r1,  D r2  in which main energizing windings I are connect to secondary windings c, d, of a transformer T r2,  so that when one core is being magnetized the other is being demagnetized. When, for example, D r1  is being magnetized the transistor T s1,  which it controls through a thyristor T h1,  is turned ON. When its core is saturated the current in R5 rises steeply, diode G r1  conducts, and the gate electrode of T h1  becomes more positive than its cathode. T h1  then fires and blocks transistor T s1 . In a similar manner D rz  controls the conduction periods of T s2.  Controlling Symmetry. If components are mismatched e.g. the saturable reactors D r1,  D r2,  then the magnetizing time of D r1  for example, is longer therefore the pulse width is somewhat longer so that capacitor C 1  will discharge to a greater extent than C 2.  There will thus be a difference in potential between the centre of a potential divider comprising C 1,  C 2  (actual mean value) and the centre tap of R 4  (reference value), which potential difference provides the symmetry control. Current will be caused thereby to flow from the tap point of R 4  via R 3  and reactor windings III. Reactor D r1  will therefore be more rapidly magnetized and D r2  more slowly, i.e. the pulse widths are made to approach the condition of exact symmetry. Voltage Regulation. A transistor T s3  in a regulator R is made more conductive or less conductive according to the value of output voltage to the load R L.  This causes increase or decrease in current in the reactors control windings II, thus adjusting the magnetizing time of the reactors and hence the conduction period of the switching transistors T s1,  T s2  which determines the output voltage magnitude. Push-pull switching circuits are illustrated in Figs. 5, 6 (not shown) and a full bridge switching circuit in Fig.4 (not shown).
Patent GB-307680-A (GB)
Title: Number plate
IPC: B60Q1/56
Filed: 1928-07-09
Abstract: 307,680. Dietzsch, A. July 9, 1928. Signs. - The number-plate of a vehicle comprises a lamp casing with an interchangeable window carrying the letters or numerals, and with two interior frame members forming the seat of a reflector which in turn carries an elastic strip forming the seat of the window. In the illustrated form the metal stencil b is backed with a sheet of coloured transparent glass n and preferably covered with a sheet of celluloid e, the whole being slidably and interchangeably mounted in the front of a box furnished with distancemembers f which form seats for a bent reflector. A resilient member h clamps the reflectors between the members f and the display plates. Lamps i are disposed in the angle of the bent reflector.
Patent GB-1303282-A (GB)
IPC: C07C51/48
Filed: 1970-04-24
Abstract: 1303282 Purification of 1,12-dodecanedioic acid E I DU PONT DE NEMOURS & CO 24 April 1970 [29 May 1969] 19893/70 Heading C2C 1,12 - dodecanedioic acid contaminated with one or more monobasic carboxylic acids is purified by contacting the contaminated acid with perchloroethylene at an elevated temperature to effect solution of at least the monobasic carboxylic acids, cooling the solution to effect crystallization and separating the solid crystallized acid. The weight ratio of perchloroethylene to 1,12-dodeeanedioie acid is preferably from 1 : 1 to 50 : 1 and the reaction is preferably carried out at atmospheric pressure and a temperature of from 95 to 130 C.
Patent GB-261669-A (GB)
Title: An improved method of manufacture of electric insulators
IPC: H01B17/26
Filed: 1926-08-13
Abstract: 261,669. Levis, B. G. Aug. 13, 1926. Insulators.-Relatively long insulators are formed of narrow paper strips by winding contiguous strips of paper b<1> b<2> on to a common mandrel a in such a manner that the edges do not form a radial butt joint. This is effected by arranging the strips b<1> b<2> with an overlap f, the overlapping strips being cut by a cutting apparatus d adapted to be moved axially from side to side during the winding process, producing a zig-zig line of junction forming a joint consisting of a series of spirals lying on the surfaces of intersecting frusta of cones.
Patent GB-205579-A (GB)
Title: Improvements in means for pivotally mounting the sound arms of talking machines
IPC: G11B3/00
Filed: 1922-07-21
Abstract: 205,579. Gramophone Co., Ltd., and Buckle, H. L. T. July 21, 1922. Tone-arm joints.-Relates to means for pivoting the tone-arm of a gramophone, of the type comprising a bearing in a base socket and an upper bearing carried by an arm extending from the base. Three main parts are provided, which can be made by pressing or drawing, and assembled without screws. These parts consist of an arm i carrying the upper pivot q for the tone-arm, a base d, and an internal sleeve m, the lower portion of the arm being formed as a split ring h which fits within the base and is held tightly therein by the sleeve m. The lower edge of the split ring is flared at k to limit its upward movement. Ball bearings may be provided between a shoulder n on the sleeve and the outwardly bent edge o of the tone-arm p.
Patent GB-1221973-A (GB)
Title: Staircase unit and a mould for making said unit
Inventor: PEACOCK JOHN DESMOND
IPC: B28B7/22
Filed: 1968-04-26
Abstract: 1,221,973. Moulding staircase units. CONCRETE Ltd. 26 April, 1968, No. 20069/68. Heading B5A. [Also in Division E1] A staircase unit 10, Fig. 2, comprises first and second stair flights 11, 12, a landing portion 13 between the top of one flight and the foot of the other, and a spine wall 14, interconnecting the two flights. The unit is cast in concrete in the multi-part mould 16 shown in Fig. 4 and including stair forming cavities 20, 38, offset landing cavities 30, 40 and spine forming cavity formed by a base 18, 28 and formwork 27, 35, 36, 37. The plate 28 and the shutter 25 form a unit which is pivoted at 73, Fig. 11, and movable by a ram 78. The shutters 36, 37 are L-shaped and are carried by pivoted brackets connected to piston-rods of rams actuation of which effects movement of the shutters between operative and inoperative positions.
Patent GB-793592-A (GB)
Title: An electron tube circuit for frequency separation
IPC: H04B1/16
Filed: 1956-06-29
Abstract: 793,592. Electronic frequency separating devices. STANDARD TELEPHONES & CABLES, Ltd. June 29, 1956 [July 1, 1955], No. 20162/56. Class 40 (6). An electron discharge tube forms part of a circuit for partial separation of widely spaced frequencies. The Figure shows the discharge tube 6 having a resistor 10 connected to the cathode and a resistor 14 and capacitor 16 effectively in parallel connected to the anode. The anode circuit presents a higher impedance to low frequencies than does the cathode circuit and thus when a composite signal is applied to the grid 5, the voltage at the anode contains a greater proportion of low frequencies. The anode circuit presents a low impedance to high frequencies than the cathode circuit and the cathode output voltage mainly consists of high frequencies.
Patent GB-316522-A (GB)
Title: Improvements in anti-dazzle devices for use with the head lights of motor vehicles
IPC: F21V11/16
Filed: 1928-04-30
Abstract: 316,522. Irving, A. J. April 30, 1928. Vehicle lamps; lantern screens.-In an antidazzle device for vehicle lamps, a transversely arranged screen engages the curved surface of the reflector and carries stay members which are adapted to abut against the front glass and are formed of component parts moved in relation one to another by means of a spring. In the form shown in Fig. 2, the screen is carried by a. frame.22 which carries telescopic legs comprising tubes 26 containing springs 25 co-operating with rods 27 which are secured to a ring 24. The screen may be provided with a central aperture through which an electric lamp bulb may project. In the form shown in Fig. 3, the screen comprises a number of clustered tubes 28 located between cylindrical tubes 29, 30, and is held in position by means of spring-controlled telescopic logs 33 and a ring 32. The screen may be provided with a, flange 31. Specification 309,400 is referred to.
Patent GB-727683-A (GB)
Title: Mass spectrometer
IPC: H01J49/40
Filed: 1952-08-12
Abstract: 727,683. Discharge apparatus. BENDIX AVIATION CORPORATION. Aug. 12, 1952 [Oct. 2, 1951], No. 20291/52. Class 39 (1). A time-of-flight mass spectrometer having an ion-originating zone and an ion collector with means for indicating the relative times at which ions of different mass reach the latter, comprises means for creating between the zone and the collector successive regions, in a first one of which the ions are subjected to a first accelerating force, and in a second one of which the ions are subjected to a second and greater accelerating force, the relative extents of the regions and the position of the collector beyond the second region being so predetermined with respect to one another and to the values of the forces as to minimize the error resulting from statistical uncertainty on the initial conditions at the ionoriginating zone. As shown in the Figure, gas from a source 40 may be introduced into the space between a backing-plate 26 and a control grid 28 and there ionized by a beam of electrons emanating from a cathode 10. The ions are accelerated by applying pulses of, for example, 200 volts to plate 26 and 150 volts to grid 28, so that there are two acceleration zones, one between plate 36 and grid 28 and the other between grid 28 and grid 42; these zones are preferably of equal length. A collector plate 46 is arranged some distance away and is connected to a time indicator such as an oscilloscope. Specification 713,993 is referred to.
Patent GB-459875-A (GB)
Title: Improved method of and means for slackening hides or skins
IPC: C14C1/06
Filed: 1935-07-16
Abstract: 459,875. Processes preliminary to tanning. QUENDT & CO., and QUENDT, B., 8, Kapuzinergasse, Essen Germany. July 16, 1935, No. 20313. [Class 76] For the purpose of softening skins and loosening the hair, they are treated with a solution, free from alkali metal ions, produced by passing gaseous hydrogen sulphide into a solution containing barium ions and ammonia,. Preferably ions of strontium and/or calcium are also present and arsenious acid may be added. A wetting agent, e.g. hexamethylene tetramine, may also be added. The treated skins may be subsequently treated in an ordinary lining bath. Examples describe the preparation of baths by passing hydrogen sulphide into solutions containing barium hydroxide or sulphide and ammonia.