baber/WOPTO huggingface dataset:
Patent GB-466481-A (GB)
Title: Improvements in or relating to alternating current commutator machines, particularlybut not essentially alternating current commutator motors
IPC: H02K27/04
Filed: 1935-08-26
Abstract: 466,481. Windings for alternating-current dynamo-electric machines. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN EN APPARATEN FABRIEKEN MEAF. Aug. 26, 1935, No. 23896. Convention date, Sept. 1, 1934. [Class 35] In an alternating- current commutator machine, the width of the brushes is such that only two adjacent segments can be simultaneously engaged by any one brush and the arrangement is such that flux traversing a region defined by a shortcircuited coil is displaced to one or more main flux paths embraced by a non-closed circuit. In the form shown, the six pole machine has a wave winding of forty-four coil sides in twenty-two slots and connected to twenty-two commutator segments, each of which is connected by ring connections 5 to two additional segments, the three segments connected by a ring connection being equidistant around the commutator, and the number of these additional segments is one less than the number of pole pairs. Between each two adjacent segments of the sixty-six so far referred to, there are three further segments connected by leads traversing the armature core, to the end remote from the commutator of the coil side connected to the adjacent main commutator segment. These auxiliary conductors 6 from each main coil end occupy three different slots, as shown, and may be above or below the main conductors in those slots. In modified forms, either the' ring connections or the auxiliary connections between the commutator and remote coil ends are omitted together with their segments, but the arrangement without auxiliary connections is only workable if the field coils are series connected. In view of the brush positions, the commutating poles would be ineffective if placed between the main poles and accordingly they are in axial alignment with them and the armature conductors are extended to span both a main and a commutating pole. It is stated that the invention is applicable also to ring wound armatures. In machines with tappings and auxiliary commutator segments, the brush width does not exceed the segment width and in the case of plain lap or wave windings the brush width does not exceed the segment width divided by the number of pole pairs. In the latter case to ensure the required flux displacement commutation must never take place simultaneously at all the commutating positions.
Patent GB-577882-A (GB)
Title: Improvements in monorail systems
IPC: B61B13/04
Filed: 1944-11-30
Abstract: 577,882. Elevated railways. AVELING- BARFORD, Ltd., PENN, O. S., and GREEN, N. D. Nov. 30, 1944, No. 23906. [Class 104 (ii)] In a monorail saddle railway, each rail length is hinged to a portable transverse pedestal adjustable in height. Each rail has a cylindrical head a, vertical web a<1> and flat base a<2>, the web being recessed at each end and the head a provided with a peg a<3>, and the base a<2> with a slotted aperture; a strengthening plate a<5> is welded to the head and base of the rail. The pegs and apertures engage holes and pegs b carried by arms b<2>, b<5> on a support b<1> which also has a cylindrical member b<3> in line with the heads a. The support bl has webs b<7> connected to sockets b<8> which receive tubular stems b<10> with bearing feet, holes b<9>, b<11> being provided for pins c which secure the support at adjusted height. Both arms b<2>, b<5> may have pegs or slots to engage slots or pegs on the rails. The rail head may be flat or elliptical.
Patent GB-792287-A (GB)
Title: Improved liquid cooled friction brake
IPC: F16D65/14
Filed: 1956-08-02
Abstract: 792,287. Cooling brakes. GENERAL MOTORS CORPORATION. Aug. 2, 1956 [Aug. 23, 1955; Oct. 19, 1955; Nov. 30, 1955], No. 23927/56. Class 103 (1). In a liquid-cooled friction brake, cooling liquid is circulated, under pressure by a pump, between stationary and rotatable annular friction brake members 62 and 63 respectively, which are connected to a housing 18 and axle 30 respectively; the pump 41 being located in a central cavity 40 of the housing and adapted to be driven by the axle and friction members being adapted to be engaged by an annular piston 85 slidable in a fluidpressure chamber 90 in the housing around the central pump cavity. Figs. 1, 3 and 4 illustrate various sections through a brake and the operation is such that the eccentric vane type pump 41 draws fluid from inlet passage 96 leading from heat-exchanger through space 170 and inlet holes 175 (Fig. 3) in the closure wall 100, and delivers fluid under pressure through ports 48 (Fig. 3) to compartment 93 whence it passes through grooved passages in the faces of the friction brake members 62, 63 to compartment 94. Fluid under pressure is also delivered through recess 166 (Fig. 4), passage 167, grooves 168, 169 and 49 to passage 47a leading back to inlet space 170. This latter internal flow of cooling fluid takes place until the temperature of the coolant reaches a predetermined minimum value. If the temperature of the fluid is raised above this value by its passage through the friction brake members, a thermally responsive device 180 expands to move a valve 160 to close off groove 49 from groove 168 and lift valve face 165 from its seat to allow the pressure of fluid delivered by the pump to increase by closing the outlet from the inlet and direct fluid through passage 164 and recess 163 to passage 95 where it passes through the heat exchanger to inlet passage 96. Manual operation of the brake may be effected by movement of operating cable 136 which moves the lever 225 about fulcrum pin 129 to actuate two links 132 and actuate two piston plungers 221 slidable in bores 220 in housing 18 to effect engagement with annular piston 85. Manual adjustment of the clearance between the friction brake members 62 and 63 when the brake is in the released condition is regulated by an adjustment screw 140 (Fig. 3) threaded in bore 141 in housing 18. Further embodiments are described and illustrated in the Specification in which the friction brake is associated with an axle housing extending from the differential housing of the motor vehicle; the operation of the brake being similar to that disclosed above but provision being made for the inclusion of an additional device to prevent seepage of fluid from the chamber housing the friction brake members to the annular chamber housing the fluid pressure brake applying piston.
Patent GB-1476356-A (GB)
Title: Edge-grinding of lenses
IPC: G02C7/04
Filed: 1974-05-30
Abstract: 1476356 Grinding edges of lenses AGFAGEVAERT AG 30 May 1974 [30 May 1973] 24057/74 Heading B3D A method of grinding the edge of a lens made of soft material, such as a contact lens, comprises placing the lens 10 on a rotatable receptacle 9 which imparts a rotary motion to the lens, centring the lens with respect to the receptacle, holding the centred lens firmly on the receptacle by means of suction, and grinding the edge of the lens. In apparatus for carrying out the method, the receptacle 9 is mounted on a driver 2 on a frusto-conical portion 1a coaxial with a rotatable spindle 1. The driver is hollow and has a bore 4 which is connected by a chamber formed between O-rings 5, 6 in a stationary collar 7 to a tube 8 connected to a vacuum source. The receptacle has a convex surface to receive the lens and a flattened area at its edge to closely engage the lens and improve holding the lens when suction is applied to the surface through boreholes 9a connected to the chamber. In operation, the lens 10 is placed on the receptacle with a viscous liquid, such as water, alchohol, silicon oil, glycerine or a mixture of one or more of these liquids, interposed between the lens and receptacle, the liquid acting to hold the lens on the receptacle when the spindle is rotated. With the spindle rotating, the lens is centred on the receptacle by axial movement of a sleeve H having an internal conical surface engaging the edge of the lens. Alternatively, the lens is centred by movement transverse to the axis of the spindle of a member having forked arms (13a, 13b, Fig. 2, not shown). The vacuum source is connected to the chamber 3 so that suction holds the lens on the receptacle and the centring means retracted so that the edge of the lens can be ground by a grinding wheel 11 which may be profiled. The wheel preferably consists of silicon carbide bound in caoutchouc.
Patent GB-435291-A (GB)
Title: Improvements in electric discharge tube oscillation generators
IPC: H01J25/52
Filed: 1934-08-21
Abstract: 435,291. Thermionic valves. M.-O. VALVE CO., Ltd., Electra House, Victoria Embankment, London, and MEGAW, E. C. S., c/o General Electric Co., Wembley, Middlesex. Aug. 21, 1934, No. 24133. [Class 39 (i)] In a split-anode magnetron, the anode supports are surrounded by conducting members which are maintained at a negative potential or are insulated and acquire such a potential from the discharge. If insulated, the members may be made of molybdenum to prevent secondary emission. In one form, Fig. 2, four graphite anodes 3, 4, 5, 6, are mounted on supports 16, 17, 18, 19 which are surrounded by molybdenum shields 24... 27 held on them by insulators 28 of silica or magnesia. The ends of the shields are covered by discs 35. The filament is tensioned at one end by a pair of members 8, 9 mounted on springs 10, 11 and passes through holes in a pair of shielding discs 13 which are mounted on supports 14 and may have biassing potentials applied to them. A magnetic field is applied parallelto the filament.
Patent GB-168772-A (GB)
Title: Improvements in and relating to centrifugal compressors and the like
IPC: F04D29/40
Filed: 1920-08-19
Abstract: 168,772. British Thomson - Houston Co., Ltd., (General Electric Co.). Aug. 19, 1920. Multi-stage centrifugal pumps; casings. - A centrifugal compressor or like machine has a casing made chiefly of concrete but having a continuous metal structure which defines the clearances of the machines and carries the bearings. The casing is made in upper and lower parts and is shown as constructed for a two stage pump. The halves are faced by plates 10, 11 provided with openings for the impellers and for the passage of air. The meeting surfaces are grooved and provided with packing to make tight joints. The plates have bolting flanges 18, 18<a> and end flanges 19, 20. Semi-circular walls 16, 16<a> define the annular air passages 21, 22, 23, 24 and the impeller spaces 25, 26, the latter spaces having annular plates 27, 28 which carry the discharge vanes 29, 30. A rigid frame 31 is carried by the righthand end of plates 10, 11 and by the casing of the driving turbine, and supports the bearing 32 for the compressor shaft 33. The other end of the shaft is carried in a bearing comprising a pillow block 34 resting on supports 36 which form an integral part of the plate 11; the shaft rests on a lining 37 in a recess in the block 34 and is held by a cap 38 with a lining 39. The shaft carries doublesided impellers 44, 45 with vanes 46 and entrance buckets 47. The two stages are separated by a diaphragm packing. The casing structure so far described forms a rigid metallic structure carrying the bearings, side plates, discharge vanes and shaft packings. The remainder of the casing and the radially outer parts of the diaphragms are formed of reinforced concrete. The inlet 51 and the outlet 52 are defined by metal rings 54 with perforated wings 55 and anchors 56 embedded in the concrete. The lower half of the concrete casing is connected to the plate 11 by grouting 59 and the metal reinforcements 60 are fastened to the plate and embedded in the grouting. Bolts also are used to secure the plate and concrete. The upper part is secured to the plate 10 in a similar manner. The outer portions of the diaphragms are secured to the walls 16, 16<a> by grouting 70 and the side edges are grouted to flanges on the lates. Arcuate strips of metal 78, 80 with ears embedded in the concrete form a connection between the walls of the pump passages and the outer casing.
Patent GB-1438147-A (GB)
Title: Method and device for measuring the flow rate of a fluctuating or intermittent fluid flow
IPC: G01F1/72
Filed: 1973-05-21
Abstract: 1438147 Measuring fluid-flow L K B MEDICAL AB 21 May 1973 [23 May 1972] 24207/73 Heading G1R To measure the instantaneous volumetric flowrate of a fluctuating or intermittent fluid-flow in conduit 3, e.g. in a lung ventilator, employing a flowmeter 1, such as a fluidistor flowmeter or a vortex shedding meter, unsuitable for measuring flow-rates below a threshold value, a second fluidflow on conduit 4 is added to the fluctuating or intermittent flow, the second flow having a known flow-rate exceeding the threshold value of the meter, the resulting continued flow is supplied to the meter, and a value corresponding to the second fluid-flow-rate is subtracted from the measuring output of the meter, the resulting output being indicated as on a display device 2. A restriction 5 in conduit 4 ensures that if a high-pressure is maintained upstream of the restriction the volumetric flow through the restriction is constant and substantially independent of the pressure downstream in the conduit 3.
Patent GB-695972-A (GB)
Title: Improvements relating to internal combustion engines
IPC: F02F7/00
Filed: 1950-10-04
Abstract: 695,972. Cooling jackets; crankcases. DAIMLER-BENZ AKT.-GES. Oct, 4, 1950 [Oct. 4, 1949], No. 24269/50. Class 7 (ii). In an internal - combustion engine in accordance with Specification 6 7 8 , 9 0 3 , the pieces of sheet material c, d, e, f, for example, metal or synthetic plastic material, forming the cooling jackets are connected to the casting or castings a, b by adhesive. The crankcase portion h may be similarly secured to the casting flanges d. The sticking together of the parts is effected with exclusion of moisture at an increased temperature and with the application of pressure.
Patent GB-317084-A (GB)
Title: Method of preparing distorted three-dimensional objects for use in place of diapositives in oblique projection
IPC: F21S2/00
Filed: 1929-08-08
Abstract: 317,084. Planer, P. Aug. 10, 1928, [Convention date]. Addition to 299,734. Optical-projection apparatus.-Transparent or translucent three-dimensional objects for use in place of a slide, as described in Specification 283,536, and of distorted shape for oblique projection, are produced in accordance with the method set forth in the parent Specification. The method may be carried out by photographing a netting by the method described in the parent Specification, subsequently placing the netting on the original object, and using the photograph of the netting in producing the distorted object.
Patent GB-1221091-A (GB)
Title: Improvements in or relating to electron discharge tubes for information storage
IPC: H01J31/60
Filed: 1968-05-22
Abstract: 1,221,091. Cathode-ray tubes. SIEMENS A.G. 22 May, 1968 [23 May, 1967], No. 24297/68. Heading HID. A cathode-ray storage tube comprises an apertured mask 5, Fig. 1, near the target electrode 6, and means for deflecting the beam on to the mask at different angles to impinge on different parts of the target electrode. In Fig. 1, a ribbon-shaped input beam 2 passes through apertures in an input mask 1 and then through two orthogonal sets of grid wires 3 and 4, of which at least one of the wires 3 is positive and all of the wires 4 may be positive. A first deflecting system comprises metal strips .10 at a common potential and associated wires 9 which have individual connections, and a second similar deflecting system comprises wires 11 and strips 12 so that the beam is deflected at selected angles through square apertures 7 in an output mask 5 to alternative positions shown at 8 and 8<SP>1</SP>. The apertures 7 are smaller than those in the input mask 1 and are such that the beam always fills them. In an alternative arrangement, Figs. 2 and 3 (not shown), the grids 3 and 4 are omitted and the first deflecting system comprises T-shaped members (29) attached to the input mask 1 and associated strips (30) insulatingly supported from them. The second deflecting system comprises similar T-shaped members and associated strips attached to the output mask, and the output apertures 7 are surrounded by cylindrical members extending about half the distance towards the target and acting as focusing electrodes when a high potential is applied to the target. The T-shaped members may be at 20 volts and the associated strips at 10 or 30 volts to switch the beam to one side or the other; if the strips are made negative, e.g. from -10 to -30 volts, the beam is reflected or collected and owing to the T-shape primary or secondary electrons do not affect the beam passing through an adjacent aperture (Fig. 4, not shown). Fig. 5 shows a beam generating means comprising an elongate cathode 44 surrounded by an accelerating electrode 45, and deflecting means in the form of a cylinder 46 and a semi-cylinder 47 arranged so that the beam always impinges orthogonally on a mesh grid 49. The input mask 1 may be arranged behind the grid 49 or may replace it. In another arrangement, Fig. 6 (not shown), the cathode is surrounded by parallel grid wires, one of which is made positive to select the radial direction of the beam, and the deflecting system is arranged concentrically. The storage means may be charge storage on an insulating surface, chemical reactions, magnetic affects, or the production of light which influences a photochromic glass controlling a photo-cell.
Patent GB-728739-A (GB)
Title: Improvements in or relating to crystal diode trigger circuits employing feedback
IPC: H03K3/313
Filed: 1951-10-19
Abstract: 728,739. Semi-conductor trigger circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 19,1951 [Dec. 27,1950], No. 24432/51. Class 40 (6). A trigger circuit having two stable states comprises a crystal diode having positive and negative resistance regions in its characteristic, an electron discharge device serially connected to the diode having a feedback circuit between its output electrode and its control grid, the amount of feedback being dependent on the diode characteristic and such as to compensate for drifts in this characteristic. Trigger pulses are applied to the discharge devices In Fig. 1, current is supplied from battery 10 through the crystal diode 14 and valve 15 in series. The bias of'the control grid is adjusted so that valve 15 conducts in both the high and low current conditions corresponding to the two stable states of the circuit. Fig. 2 shows the currentvoltage characteristic OB of the diode 14, and curve 25 represents the " load line " corresponding to the anode voltage/anode current characteristic of valve 25, assuming no feedback circuit is provided. Points of intersection 26 and 27 then represent the two stable operating conditions of the circuit. Switching from one state to the other is effected by trigger pulses to the control grid from pulse source 20. Since the diode characteristic may in fact drift to positions such as those shown by curves OC, OD, the feedback circuit is provided by coupling the anode and grid of valve 15 through resistance 17. This effectively shifts the " load line " 25 to the curve AE, points 30 and 31 now being the normal operating points of the circuit. Due to the effect of the feedback circuit, the changes in the circuit conditions produced by drifts in the diode characteristic to curves OC and OD are less at operating points 30 and 31 than they were at the points 26 and 27, and the arrangement is thus more stable. Specification 728,740 is referred to.
Patent GB-586904-A (GB)
Title: Reflecting devices for radio waves
IPC: H01Q15/20
Filed: 1944-12-06
Abstract: 586,904. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BARTON, .J. C. Dec. 6, 1944, No. 24452. [Class 40 (v)] A device for release from an aircraft to interfere with the operation of radiolocation apparatus consists of a number of pieces of thin conductive material hinged together to form a flat pack and provided with means which open it up into a three-dimensional figure consisting of a number of corner reflectors when the device is released. Fig. 1 shows five pieces 1 of light metal or metalized card hinged together and having four pieces 2 of similar material fixed between adjacent faces and creased so that the device will fold flat. Pieces of elastic 3 or, alternatively, a small spring, are used as opening means. Delay in falling may be achieved by attaching a small parachute.
Patent GB-1263651-A (GB)
Title: Epoxy compounds and a process for the production thereof
IPC: C07C29/17
Filed: 1968-12-12
Abstract: 1,263,651. Epoxy nitriles. F. HOFFMANNLA ROCHE & CO. A.G. 12 Dec., 1968 [18 Dec., 1967], No. 24557/70. Divided out of 1,255,650. Heading C2C. Novel epoxy compounds of the formula in which R represents hydrogen or C 1-6  alkyl and A and B are hydrogen or together represent a double bond or an oxygen bridge, are prepared either by reacting a ketone of the formula in which A<SP>1</SP> and B<SP>1</SP> are hydrogen or together represent a double bond, with a phosphorane of the formula in which R<SP>4-5</SP> are aryl or dialkylamino groups, or with a phosphonate of the formula in which R<SP>7</SP> and R<SP>8</SP> are aryl, alkoxy or aryloxy groups, in the presence of a base and an organic solvent and converting the product to an epoxide either by treatment with an organic peracid or by treatment with N-bromosuccinimide, water and a base, or converting the above ketone to an epoxide by the above methods and reacting the product with a phosphonate of the above formula. Specified nitriles are 10,11- epoxy - 3,7,11 - trimethyl - trideca - 2,6 - diene- 1 - nitrile, 6,7;10,11 - diepoxy - 3,7,11 - trimethyltrideca - 2 - ene - 1 - nitrile, 10,11- epoxy - 3,7,11 - trimethyldodeca - 2,6 - diene - 1- nitrile and 6,7;10,11-diepoxy-3,7,11-trimethyldodeca-2-ene-1-nitrile. The epoxides are used as pest control agents and act by interfering with hormonal system of, e.g. insects, and preventing normal growth and reproduction.
Patent GB-1001076-A (GB)
Title: Improvements in or relating to optical instruments
IPC: G02B5/04
Filed: 1962-06-26
Abstract: 1,001,076. Angle measuring instruments. W. R. MACLEAN. June 26, 1962 [June 26, 1961], No. 24569/62. Heading G1F. [Also in Divisions A3, B4 and B6] An optical coincidence instrument for measuring angles of sight, particularly from small dinghies in estuaries, lakes of adjacent the coast, comprises a pair of small optically plane substantially opaque, highly reflecting mirrors mounted in edge-to-edge abutting relationship at a precisely designated angle between 0 degrees and 90 degrees with their reflecting surfaces facing outward and intersecting in a sharp unobstructed dihedral edge so as to permit simultaneous viewing of two distant scenes. As shown, Fig. 6, the instrument is in the form of a finger ring 45 provided with a faceted gem having surfaces 47, 48, 49 at angles of 60 degrees, 75 degrees, 45 degrees to one another and a top facet 46 at right angles to facet 48 so that any pair may be used in taking an angle of sight. In a modification the finger ring has two gems each of which provides one pair of specular sides intersecting at a sharp edge. In a further form, Fig. 10, a hollow tube 91 has a sector removed and has secured thereto a rod 92 one end of which is cut away to form a thin sector with a specular side 93 coming to a sharp edge at the cylindrical centreline. This co-operates with a similar specular side 95 on a sector of a second rod 94 rotatably received in tube 91, the angle between faces 93, 95 being determined from scale 97. The device may be provided on a pencil, penknife, cuff links, watch charms or other small objects.