baber/WOPTO huggingface dataset:
Patent GB-1430892-A (GB)
Title: Commutation apparatus for dc permanent magnet machines
IPC: H01R39/04
Filed: 1974-05-21
Abstract: 1430892 Roller brush contacts in dynamoelectric machines KOLLMORGEN CORP 21 May 1974 [30 July 1973] 22516/74 Heading H2A In a D.C. motor having a rotor with permanent magnets 23 and a stator with windings 17, electrical contact is made between a series of radial commutator bars 19 connected to the windings and a pair of conducting rings 21, 22 connected to a D.C. source (not shown), by means of a pair of conductive rollers 31, 31<SP>1</SP> rotatably mounted on a pair of shafts 30, 30<SP>1</SP> fixed on the exterior of a drum 25 on the rotor shaft 15, the rollers rolling over the surface of an insulating body 20 in which the rings and bars are mounted as the rotor rotates. The rollers, which may be of carbon graphite, silver graphite, silver cadmium oxide or silver tungsten, are axially and angularly displaced to make contact with the respective rings and with bars at the ends of only one winding at any time; other pairs of rollers (not shown) may also be used to provide multiple contacts. The commutator bars 19 are mutually offset relative to the rolling contact direction (as in Fig. 3, not shown) to provide "make before break" connections. In the embodiment of Fig. 5 (not shown), each roller (36) comprises a first part (39) for contacting only a ring, and a second part (40) for contacting only the commutator bars, electrical continuity being provided through the body of the roller itself. The above rolling contact arrangements may also be applied to motors having permanent magnet stators and wound rotors.
Patent GB-1310848-A (GB)
Title: Method and apparatus for purifying water
IPC: C02F3/06
Filed: 1971-04-19
Abstract: 1310848 Purifying water HYDRO INTERNATIONAL AG 19 April 1971 [27 Feb 1970] 22569/71 Heading C1C Water containing organic pollutants is purified by passing the water through a filter bed of porous material having a specific surface between 10-400 sq. m./gm., the bed containing an aerobic bacterial charge such that the polluted water and oxygen is fed to the bed and aerobic degradation takes place therein. The porous material is preferably a resinous charcoal obtained by carbonization of resinous wood sawdust which has been impregnated with a dilute sulphuric acid solution. The process may be carried out in the apparatus shown in Fig. 2 wherein polluted water enters a tank formed by casing 10 via inlet 13 or is aerated by spreader 19, the aerated liquid then passing through the filter bed 11, purified water passing out of the tank at outlet 15. Purified water may be re. cycled via 40 to dilute heavily polluted water. At intervals water and/or air may be passed upwards through the filter bed to clean and regenerate the same. Heavily polluted water may be purified by the process of the invention by utilizing two tanks connected in series (Fig. 3, not shown).
Patent GB-883143-A (GB)
Title: Punching machine for paper and like materials
IPC: B26D7/06
Filed: 1959-07-01
Abstract: 883,143. Cutting-out presses. MASCHINENFABRIK GOEBEL G.m.b.H. July 1, 1959 [July 1, 1958], No. 22616/59. Class 31 (1). [Also in Group XVI] Webs 5 of paper, cardboard or the like are fed between the tools 3, 4 of a cutting-out press 1, 2 by the combination of conveyer belts 6 and suction, the belts being perforated and having their upper runs movable over a perforated table comprising a suction box 7. The web 5 is clamped to the face of the box 7, so that it cannot be moved by the belts 6 just before a cutting-out operation, by oscillating fingers 25 which are operated in timed relationship with the machine. There are several belts 6 mounted in recesses in rollers 15, 16, and one roller is driven continuously and preferably uniformly. In a modification, the speed of the belts may be decreased just before the clamping fingers 25 descend, and increased to maximum speed after the cutting-out operation. The top of the suction box 7 has slots therein immediately below the belts 6 so that sheets are gripped to the belts; the exposed parts of the box top between the belts may have grooves or perforations therein which lead to atmosphere. A valve on the box 7 controls the degree of vacuum therein. After the cutting- out operation, the sheet &c. 5 is forwarded by a second set of conveyer belts 9 and a suction box 10 which are of the same construction as the belts 6 and box 7. Where the machine is for partially severing a web, the web is pulled through the machine by the conveyer belts and suction box arrangement behind the machine, and known conveyers may be arranged in front of the machine.
Patent GB-359569-A (GB)
Title: Improvements in and relating to electrical battery connections
IPC: H01M50/503
Filed: 1930-07-26
Abstract: 359,569. Couplings. MASSEY, H. W., 60, Park Road, Farnborough, Hampshire. July 26, 1930, No. 22621. [Class 38 (i).] A battery connecting device for use as shown comprises a plate 6 slotted to allow the battery contacts to pass through and be held by a further plate 3 connected to the plate 6 by a nut 2 and hollow screw 4. A wander plug can fit in the screw and if the screw is narrowed down at one part the plate 3 can be retained loosely in position.
Patent GB-1433927-A (GB)
Title: Air-space insulated coaxial rf cable with corrugated conductors and individual plastics spacers disposed on the inner conductor
Inventor: DITSCHEID H L
IPC: H01B11/18
Filed: 1973-05-11
Abstract: 1433927 Coaxial cables FELTEN & GUILLEAUME KABELWERKE AG 11 May 1973 [6 June 1972] 22644/73 Heading H1A In an air-spaced coaxial r.f. cable, a tubular inner conductor 1 with annular, i.e. non-helical, corrugation grooves, the axial pitch of which is not less than 0À3 times the conductor diameter, is supported centrally within a helically-corrugated outer conductor 3 by moulded thermoplastics spacers 2, which comprise spoke members 4a, 4b, 4c, interconnected by spring members 5a, 5b, and which engage with the corrugations of both inner and outer conductors. The spacers 2 are disposed at axial intervals between 0À6 and 0À75 times the sum of the inner and outer conductor diameters. Each spoke member has a part-cylindrical member 6 with an inwardly circumferential projection 7 engaging a corrugation groove of the inner conductor, and the outer cylindrical surface of the spacer is provided with axial beads 8a, 8b, 8c, which with plastic deformation engage with the outer conductor corrugations.
Patent GB-166457-A (GB)
Title: Improvements in method of and apparatus for forming concrete piling
IPC: E02D5/44
Filed: 1920-07-30
Abstract: 166,457. Newton, D. M. July 30, 1920. Piles.-A concrete pile having an enlarged base is formed by driving a casing provided at its lower end with a detachable cap, partially filling the casing with concrete, and ramming the concrete so that the cap is forced off and an enlarged base is formed. The casing 10, Figs. 7 and 8, with the cap 12 in position, is driven by means of the ram 15, which extends the whole length of the casing, a shoulder on the head 18 of the ram bearing on the upper reinforcing band 12 of the casing. The ram is withdrawn, and a charge of concrete run into the casing. The ram being reinserted, the casing is partially withdrawn, and the ram driven downwardly so that the concrete is forced outwardly and downwardly to form an enlarged base, in which the cap 21 remains embedded. A further charge of concreteis inserted, the casing further withdrawn, and the concrete rammed to complete the pile.
Patent GB-461326-A (GB)
Title: Improvements in or relating to shoe-upper conforming machines
IPC: A43D21/12
Filed: 1935-08-13
Abstract: 461,326. Hydraulic accumulators. BRITISH UNITED SHOE MACHINERY CO., Ltd., KEALL, F. B., and ROBERTS, W. T. B. Aug. 13, 1935, Nos. 22744 and 25960. [Class 69 (ii)] [Also in Group VII] In a shoe-lasting machine wherein hydraulic mechanism actuates the lasting wipers, oil is used as the liquid and an accumulator communicates with a pump driven by an electric motor. To empty the accumulator, e.g. at the end of the day, to prevent the oil absorbing air, the handle actuating the motor switch is also connected to a valve for emptying the accumulator and to a ball valve to admit air thereto. The ball 369 is, normally, held down by the pressure of oil in the accumulator, against the thrust of a spring 373 compressed by the actuating member 355. When the pressure falls sufficiently, the spring raises the ball and air enters the accumulator by a pipe 363.
Patent GB-407258-A (GB)
Title: Improvements in and relating to cinematograph apparatus
IPC: G03B21/18
Filed: 1933-08-15
Abstract: 407,258. Kinematograph apparatus. BAUER GES., E., 10, Neckarstrasse, Unterturkheim, Stuttgart, Germany. Aug. 15, 1933, No. 22810. Convention date, Aug. 19, 1932. [Class 97 (i).] In apparatus having a fire-protective film channel, a wall of the channel is movable and is so connected to the gate that the channel opens as the gate opens. As shown, in open condition, the channel comprises a fixed wall m, and a movable wall n secured to an objective carrier o carrying the movable part i of the gate. The wall m has slots to accommodate the teeth of a feed sprocket g, and the top of the wall n may be formed as a ledge to cover, when the channel is closed, part of the slit through which the film emerges from the spool box.
Patent GB-788520-A (GB)
Title: Improvements in laminated electrical insulation
IPC: H02K3/34
Filed: 1955-08-08
Abstract: 788,520. Laminated materials. GENERAL ELECTRIC CO. Aug. 8, 1955 [Aug. 12, 1954], No. 22812/55. Drawings to Specification. Class 140. [Also in Group XXXV] An electrically insulating laminate comprises a layer of paper bonded to a layer of polyethylene terephthalate. Typically, for use as a slot liner in dynamo electric machines, the two laminµ are each 5 mils. thick and are united by a rubber latex-base adhesive, and the paper used is a rag paper.
Patent GB-424423-A (GB)
Title: Improvements in hand-operated indicators for facilitating identification of wireless transmitting stations
IPC: H03J1/04
Filed: 1933-08-16
Abstract: 424,423. Calculating - apparatus. RICHARDSON, E., 17, Boscombe Road, Shepherd's Bush, London. Aug. 16, 1933, No. 22923. [Class 106 (i)] A hand-operated device for use in calculators relating to the tuning of wireless receivers comprises a base member having a series of scales b<1> divided into different numbers of parts, a disc a rotatable on the base member and provided with slots a<2> and " zones " a<1>, and a masking member rotatable above the disc and having a sector-shaped slot to expose any one zone. The tuning range of a wireless set is divided into a number of zones, the beginning and end of each zone being the wavelength of an easily-identified station. Each zone is divided again into " channels " spaced apart an equal number of wavelengths, the spacing being such that a different station could occupy each channel. The degrees of movement of the tuning dial in passing from one end of a zone to the other are determined and, assuming the same movement for each unit change of wavelength within the zone, the movement necessary to tune to any channel within the zone can be calculated by simple proportion. The device described for assisting this calculation comprises a disc a divided into zones I-VIII, each zone being marked with the numbers of the channels 5-103 and with the easily-identified stations. The disc is rotatable over a base plate having a series of scales b<1> divided into 10, 11, 12-39 equal parts. By rotating the disc, any scale can be brought beneath a slot a<2> in each zone, so that the zone can be divided into the number of equal parts corresponding to the tuning-dial movement in passing from one end of the zone to the other. The tuning-dial movement necessary to pass to any of the numbered channels within the zone is then indicated by the base-scale division adjacent the channel number. The disc a is covered by another disc having a sector-shaped opening so that all but the zone under consideration is obscured. A rotatable disc a may be provided on both sides of the base plate, scales being formed on each side one side being used for long wavelengths and the other for medium wavelengths.
Patent GB-1465165-A (GB)
Title: Process for the stabilization of polyacetal resins
IPC: C08G2/00
Filed: 1974-05-22
Abstract: 1465165 Stabilizing polyacetals SOC ITALIANA RESINE SIR SpA 22 May 1974 [15 June 1973] 22955/74 Heading C3P Oxymethylene polymers are stabilized by reaction with an etherification agent in the presence of an acid or acid ester catalyst and in a medium comprising a solvent and a non-solvent (for the polymer). Examples refer to the stabilization of polyformaldehyde or a trioxanethylene oxide copolymer by reaction with triethylorthoformate or -acetate or di(methoxymethyl)ether in the presence of fuming sulphuric acid, diethyl sulphate, p-toluene sulphonic acid, phosphoric acid or trichloracetic acid and as reaction medium dimethyl formamide/C 10-14  n-paraffins, N,N-dimethylacetamide/C 10-14  - n - paraffins, dimethylsulphoxide/ dodecylbenzene, caprolactone/dodecane and dimethyl sulphoxide/dodecane, as well as comparative procedures using the solvent or non- solvent atoms.
Patent GB-996180-A (GB)
Title: Shock absorber, more particularly for motor vehicles
IPC: F16F9/58
Filed: 1961-06-26
Abstract: 996,180. Hydraulic shock absorbers. LEMFORDER METALLWARENGESELLSCHAFT m.b.H. June 26, 1961 [June 25, 1960], No. 23040/61. Heading F2S. The piston rod 2 of a telescopic shock absorber 3 extends through a resilient buffer 4 which is made of a cellular plastics material, e.g. foamed polyurethane. The buffer, which is preferably reinforced by a skin 6 of harder plastics material may have a conical shape and may comprise separate layers as indicated in broken lines. An annular space 10 between the buffer 4 and a protective tube 8 allows the buffer to expand laterally under compressive load. The buffer may be made of two or more layers of differing elasticities.
Patent GB-1438506-A (GB)
Title: Apparatus for use in playing percussion instruments
IPC: G10D13/00
Filed: 1973-05-15
Abstract: 1438506 A playing device for a percussion instrument R D ZALMER 15 May 1973 23152/73 Heading G5J A floor-reposing playing device for a percussion instrument comprises a beater unit 11 with a beater shaft 24 journalled on axle pin 22 in head portion 21 of column 20 on base 19 and a remote drive unit 12 with a base 38 and upright supports 39, 39a in which is journalled shaft 40, driven by pedal 41 and connected by flexible shaft 14 to shaft 24. Quick-coupling members are described for 14, which comprises two concentric helical coils in opposite directions. A beater 16 is mounted on hollow shaft 24. Toe end of pedal 41 is connected by arm 25<SP>1</SP> joined by weblike link (26<SP>1</SP>) (Fig. 2, not shown), to shaft 40. Heel portion 41b resets on the floor and is rigidly connected to extension member 38a of base 38. A spacer 13, joining the units to maintain their spatial relationship, comprises top member 43 and bottom member 44 between depending guideway slides (47) (Fig. 2, not shown). Slot 45 provides clearance for locking bolt 45<SP>1</SP>. Swivel arms 48, 48<SP>1</SP> are mounted on 43, 44 respectively and held by bolts 49, 50, their outer ends being secured to units 11 and 12 by bolts 49<SP>1</SP>, 50<SP>1</SP> in flanges 51, 52. Another beater 17 is fixed to hollow shaft 23 with arm 25 and link 26 to upper end of pedal 27, whose lower end is on the floor and whose hinge 28 is joined to extension member 19a of base 19. Unit 11 is attached to the drum by clamp 15. Springs 30, 30<SP>1</SP> on radial arms 32, 32<SP>1</SP> on shafts 23, 24 pull beaters 17, 16 away from drum head 33. Collar 34 and set screw 35 secured to axle pin 22 retain shaft 23. In another embodiment (Figs. 5, 6, 7, not shown) the flexible shaft is connected between a shaft of the hinge portion of the remote pedal and a shaft low on the beater unit. This shaft is linked to its beater shaft. The two beaters may be supported on separate beater units, so that the beaters may be placed in different positions relative to the drum head. Figs. 8, 9, 10 (not shown) show how spacer 13 can be adapted to hold various units and instruments in relative positions.
Patent GB-1519435-A (GB)
Title: Nuclear reactor fuel assembly
IPC: G21C3/36
Filed: 1977-06-01
Abstract: 1519435 Fuel elements COMMISSARIAT A L'ENERGIE ATOMIQUE 1 June 1977 [11 June 1976] 23231/77 Heading G6C A plate-type fuel assembly comprises a stack of parallel fuel plates 2 disposed vertically in uniformly spaced relation, at least some of the fuel plates 2 being provided with hollow sleeves 11 extending vertically in the plane of the plates and being uniformly spaced in the transverse direction of the plates. The sleeve 11 may extend beyond the ends of the plates and be welded to the end-plate (15, 16) of the fuel assembly (Fig. 1, not shown) or, alternatively, tubular tie-rods (20) greater in length than the plates may pass through the sleeves and be welded to the end-plates (Fig. 2, not shown). Certain of the sleeves 11, or the tubular tierods (20), serve to guide reactor control rods. The fuel plates 2 are interconnected by means of combs 9 having teeth 10 which are flushmounted in the gaps between the plates. In addition, transverse spaces 24 are distributed across and perpendicular to the plates, these spaces 24 comprising lugs 25 having a width equal to the spacing between the plates connected together in pairs by cylindrical portions 26 having a length equal to the thickness of the plates. The spacers 24 transverse the fuel plates 2 through elongated slots 23 formed in the plates in zones which do not contain fuel and are positioned by turning through 90 degrees in order to bring the lugs 25 at right angles to the slots 23. Such a fuel assembly may be placed within a reactor core in the vicinity of at least one fuelpencil assembly. In this case, strips or plates are joined to the combs 9 to form a screen against the flow of coolant out of the fuel-pencil assemblies and in through the sides of the plate-type assembly. By means of this arrangement, conventional fuel assemblies of the fuelpencil type can be replaced in a reactor core by fuel assemblies of the plate type, without entailing any need to modify the fuel-handling means and control-rod drive mechanisms. The fuel assembly may be provided with means for inducing turbulence in the flow between the fuel plates, comprising thin metallic cross-strips 33 welded to the combs 9. Vertical slots 34 are formed in at least one end of each cross-strip 33, alternate intermediate portions 36 being bent in one direction while the other intermediate portions 35 are either not bent or bent in the opposite direction.
Patent GB-1133378-A (GB)
Title: Improvements relating to electric lamp holders
Inventor: WAGSTAFFE AUBREY HUBERT
IPC: H01R33/46
Filed: 1966-05-25
Abstract: 1,133,378. Lampholders. LONDON BANKSIDE PRODUCTS Ltd. 25 May, 1967 [25 May, 1966], No. 23290/66. Heading H2E. A lampholder body 1 of resilient material includes diametrically-opposed arms 5 which together with body parts 4 define bayonet slots, end portions 12 of the arms 5 bearing against the bayonet pins 10 of an inserted lamp to urge the lamp contact 11 against a contact stud 7 of the holder. The body 1 is formed from a metal blank (Fig. 5, not shown), or, alternatively, from resilient plastics material. The contact stud 7 and a surrounding insulating washer 6 extend through an aperture in the base 2 of the body 1, a lead 8 being connected to the contact 7 by soldering or by a terminal screw or spring clip. Rubber rings (not shown) may surround the lead 8 and engage the base 2. In a modification (Fig. 3, not shown), an insulating washer (26) carries two contact studs (27), projections on the washer extending through respective apertures in the base 2. A central dimple (26a) on the underside of the washer (26) engages the base 2, thus allowing the washer to rock to provide equal contact pressures. The bayonet slots may be at different heights in the body 1 for receiving axially-offset bayonet pins of a double-filament lamp.
Patent GB-501141-A (GB)
Title: Improvements in or relating to electrical transformer arrangements
IPC: G05F3/06
Filed: 1937-08-25
Abstract: 501,141. Transformers. MARCONI'S WIRELESS, TELEGRAPH CO., Ltd., and BURDICK, R. H. Aug. 25, 1937, No. 23300. [Class 38 (ii)] In a self-regulating transformer comprising secondary winding parts SA, SS on magnetic core limbs operating under different saturation conditions, there-is provided in shunt with the whole or a portion of a secondary winding on the limb of higher saturation a condenser C forming with the winding a resonant circuit. The primary P is arranged on a third limb of the coil which is gapped at AG to reduce the saturation of the limb carrying the secondary winding part SA. The condenser C may have in series therewith resistance R and inductance L, and the winding SS across which the condenser is connected may be wholly or partly in series with the load, or as shown in Fig. 5, it may be an independent winding inductively coupled to a winding SS<11> in series with the load. The arrangement may be made to give constant secondary voltage under (1) varying load if the primary voltage is constant or (2) varying primary voltage if the load is constant. By using two such arrangements in cascade constant secondary voltage with variations of both primary voltage and load may be obtained. By associating a number of circuits broadly resonant to different frequencies with the saturated limb (see Fig. 6), the output voltage characteristic may be rendered independent of frequency over a predetermined range.
Patent GB-1378735-A (GB)
Title: Travelling wave tubes
IPC: H01J25/38
Filed: 1973-05-17
Abstract: 1378735 Travelling-wave tubes ENGLISH ELECTRIC VALVE CO Ltd 17 May 1973 [22 Feb 1973] 23471/73 Heading H1D In a travelling-wave tube having a coupledcavity slow-wave structure with resonant coupling elements-e.g. slots or loops-coupling adjacent cavities, the resonant frequencies of the coupling elements at the output end of the structure obey a tapering law in which the frequency is convergent on the cavity resonant frequency towards the output, whereby the velocity tapering of the r.f. wave is a function of frequency over the operating bandwidth of the tube, to allow for the fact that the dispersive nature of the coupled-cavity structure produces increased slowing of the beam at the low frequency end of the band. For slot-coupled structures, e.g. of cloverleaf type, the dimensions of the slots, and in centipede structures either the amplitude or the circumferential spacing of the loops, may vary. The tapering law is preferably linear, and may provide part only of the velocity taper, the remainder being produced by a variation of the axial length of the cavities, which produces a frequency independent taper.