baber/WOPTO huggingface dataset:
Patent GB-274995-A (GB)
Title: Improvements in dynamo-electric machines
IPC: H02K47/04
Filed: 1926-06-17
Abstract: 274,995. Creedy, F. June 17, 1926. Addition to 249,579. Alternating-current commutator and induction machines; rotary converters and transformers; motors, controlling. - Alternating - c u r r e n t machines having two commutator windings and two coexistent magnetic fields of different pole members, one excited at the line frequency and the other at commutator frequency, as described in the parent Specification, are started by passing currents of line frequency through the circuits, which normally carry currents of commutator frequency. Fig. 1 shows the application to a machine operating as an induction motor combined with a continuous-current generator, the brushes being moved to the position shown in dotted lines for normal running. The machine has a shunt winding S1, S2 and a neutralizing winding shown as a circle C. For starting, the brushes are placed at A, B, as shown, and the switch is moved to the position St, whereby current at line frequency is fed from the line wires L2, L3 through a transformer L21, L31 to the commutator winding, the primary winding P, Q, R being open-circuited. The shunt coil S1, S2 is short-circuited to act as a neutralizing winding, and the machine starts as a single-phase series motor. For running, the switch is moved to the position Rn so that three-phase line energy is led to the winding P. Q, R, and the coil S1, S2 and. commutator winding are connected to the continuous-current lines L4, L5. The brushes are simultaneously moved to the dotted position. For single-phase operation, one leg of the winding P, Q, R is omitted. In the form shown in Fig. 2, the shunt coil S1, S2 is permanently connected across the commutator and the brushes are not moved for starting. This machine has a twocircuit wave-wound neutralizing winding, as described in Specification 274,195, with an additional tap D1 displaced from the diametral taps C, D, so that current from the taps C, D1 produces a field along the same axis as that due to the coil S1, S2. The tap D is permanently connected to the continuous-current line. L4 and the tap D1 to one terminal on the starting side St of the switch. At starting, line energy from the mains L1, L2 is passed through a transformer to the brush A and tap D1, the winding P, Q, R being open-circuited. For running, the brush A is joined to the other continuous-current line L5. Fig. 3 shows a form in which the exciter E of a converter F is used for starting. the shunt coils S3, S4 of the laminated exciter field being divided to reduce the induction of large E.M.F.'s. In the starting position St, the exciter armature and series coils B are energized at line frequency from the line wires L2, L3 and a transformer, the shunt and primary circuits S3, S4. S1, S2 and P, Q, R being open. In the running position Rn, the main field is connected across the exciter at A1, B1, the exciter field circuit is completed at C, D and the primary coils P, Q, R are. connected to the alternating lines L1, L2. L3. For singlephase operation one limb at P, Q, R may be omitted, as before.
Patent GB-137806-A (GB)
Title: Improvements in or relating to expansion bolts
IPC: F16B13/06
Filed: 1919-06-17
Abstract: 137,806. Wagner, R. D. Jan. 16, 1919, [Convention date]. Screw sockets; nuts.-A device for securing railway screw spikes, bolts, &c. in wood or metal comprises an externally threaded split socket B which is expanded by a conical or wedge-shaped split nut A drawn into it by a threaded bolt C<11>, which is prevented from rotating by projections c engaging the slots C of the socket. The nut is formed with one or more straight, zigzag, transverse, or helical slots b which may or may not extend to either end of the nut. The socket B may have a single division extending its whole length, or may be in two separable parts. A conical collar may be placed under the bolt head to expand the upper end of the socket.
Patent GB-627908-A (GB)
Title: Improvements in or relating to clips for securing electrical contact members
IPC: H01H11/06
Filed: 1947-06-10
Abstract: 627,908. Friction fastenings. GENERAL ELECTRIC CO., Ltd., and BIGNELL, G. J. H. June 10, 1947, No. 15256. [Class 44] [Also in Group XXXVII] A U-shaped electrical contact member 1 is secured to a switch spindle 2 by a clip comprising a plate 4 having spring loops 6 through which the spindle is threaded, the loops being biased apart so that the plate 4 presses the contact member against the spindle. The loops are formed from a single length of wire held in rolled up portions 5 at the sides of the plate.
Patent GB-1133849-A (GB)
Title: Apparatus and method of casting
Inventor: WOODBURN JAMES
IPC: B22D35/04
Filed: 1966-04-06
Abstract: 1,133,849. Pressure - casting apparatus. AMSTED INDUSTRIES Inc. 6 April, 1966, No. 15278/66. Heading B3F. In pressure-casting apparatus wherein molten metal is forced under pressure upwards through a pouring tube into a plurality of moulds 14 an adaptor 10, having an inlet 20 co-operating with the pouring tube and outlets 28 co-operating with the moulds, is interposed between the pouring tube and the mould, the horizontal cross-sectional area of the adaptor cavity increasing from the inlet to the outlet openings and the combined horizontal cross-sectional area of the outlet openings and the associated mould cavities being constant and equal to the maximum horizontal cross-sectional area of the adaptor cavity. The adaptor cavity is divergent from the inlet opening to the outlet openings so that the surface area of molten metal rises uniformly and without turbulence into the moulds. The adaptor is constructed with an inner housing 18 and an outer easing 36 with a space therebetween which is filled with a refractory insulating material 37.
Patent GB-196836-A (GB)
Title: Improvements in or relating to apparatus for the control of variable speed gear mechanism of motor vehicles
IPC: B60K20/00
Filed: 1922-05-31
Abstract: 196,836. Ter Cock, C. May 31, 1922. Facilitating changing speed. - The rotary change-speed gear control handle described in Specification 173,802 is provided with means whereby, when the handle is turned to " change down " the gear, the engine shaft and the gearbox shaft are temporarily and automatically speeded up, while when the gear is " changed up " the engine shaft is temporarily slowed down. The control handle carries a disc 3 having four pins 4a - - 4d corresponding to the four-speed positions of the handle. When the handle is turned in either direction, one of these pins acts on a deformable spring switch-lever 5 or 6 and closes contacts 11 or 49. To change down, the handle is rotated anticlockwise and the contacts 11 are closed, completing a circuit from the battery 12 through solenoids 17, 22. The solenoid 17 acts upon a fuel pump 26 so that a certain quantity of fuel is forced into the induction pipe 28 of the engine and the engine speed increases. The solenoid 22 brings friction gears 47, 48 into contact with the clutch members 40, 40<a> on the engine-shaft and gear-box shaft respectively, so that although the clutch is disengaged the gearbox shaft is driven from the engine at the increased speed. The stroke of the fuel pump 26 is regulated by means of a pin 25<a> and a sliding inclined member 29 connected to the accelerator pedal 32, the stroke increasing with the amount of throttle opening. For changing up, the control handle is turned clockwise and the contacts 49 are closed, completing a circuit through a rheostat 55 and a solenoid 57 operating a brake 59 on the engine-shaft. The rheostat is controlled by the accelerator pedal 32, and the braking effect; which is governed by the resistance in the rheostat, is therefore dependent on the throttle opening. At low speeds the pedal 32 disconnects the rheostat so that the brake 59 is not applied. Auxiliary contacts 11<a>, 49<a>, one set of which is closed whenever the control handle is rotated, control a circuit through a solenoid 18 operating a clamp 36 for the rod connecting the pedal 32 to the throttle lever 30. The control handle carries a plate 60 having four cams acted upon by a spring-pressed ball 61 to retard slightly the rotation of the handle and allow time for the operation of changing gear. Instead of injecting fuel into the induction pipe, a flexible container connected to the mixing chamber may be squeezed to supply additional mixture. Specification 105,192 is referred to.
Patent GB-1019752-A (GB)
Title: Process and apparatus for producing glass
IPC: C03B18/16
Filed: 1963-04-18
Abstract: <FORM:1019752/C1/1> In a process for the production of flat glass, the glass is supplied to a liquid of greater density than the glass, so that the glass floats on the liquid, in a chamber, at least a portion of the floating glass being screened from another portion of the glass by discharging a gas stream toward the ribbon.  A ribbon of molten glass is fed between upper and lower seals 18a, 50 of the front wall of a tank 18 which is filled with a liquid metal 16 e.g. molten tin or tin alloy, lead, lead-zinc alloy, lithium or metal salts, the ribbon floating on the liquid metal. The tank 18 is divided into chambers 28a, 28b and 28c by a depending wall 40 which has means for forming a seal 54 all along its bottom edge, thus separating chamber 28b from chambers 28a and 28c.  The upper seals 18a (front wall), 18b (back wall) and 54 are in the form of a series of lands and grooves 56, 58, Fig. 10, the centre groove housing a tube 62 which has a series of two or more orifices 64 at right angles to each other through which is passed an inert gas preheated to the temperature of the liquid metal at that point, and at a pressure equal to or greater than the pressure supplied to the opposite side of the curtain.  The lower seal is formed by passing preheated inert gas through orifices 72 in grooves 66 from a plenum chamber 70. The liquid metal is heated by electrodes 20, and the chamber by radiant heaters 48, the temperature gradient in the liquid metal being maintained with the help of baffles 30a-30c, and 32; and in the chamber 28b by baffles 46a-46d.  The glass ribbon 14 is led through chamber 28a where it is reheated to melting temperature, and is then fed through chamber 28b, but with its edge portions in chamber 28c. Thus by causing a different pressure to be applied to the central flat portion in chamber 28b to that applied to the edge portions in chamber 28e the relative buoyancy of the glass with respect to the liquid metal is altered from normal equilibrium and various thicknesses of glass can be produced depending upon the pressure differential.  The glass ribbon after defects have been allowed to iron themselves out, is stabilized and then fed out through seal 18b, 52 in the rear wall and drawn away by rollers 22.  In an alternative embodiment the gas discharging in chamber 28c may be atmospheric and cooler than the metal so that the edges of the ribbon are chilled to enable them to be gripped by rollers 82, 84, Fig. 11 (not shown), which, by varying their speed, can alter the ribbon thickness.  Two examples of sheet glass compositions are given.  They are (a) SiO2 71.38%, Na2O + K2 13.26%, CaO 11.76%, MgO 2.54%, Na2SO4 0.75%, Al2O3 0.15%, Fe2O3 0.11% and NaCl 0.06%; and (b) SiO2 73.00%, Na2O + K2O 13.24%, CaO 8.44%, MgO 3.53%, Na2SO4 0.42%, Al2O3 1.28%, Fe2O3 0.09%.
Patent GB-1137001-A (GB)
Title: Improvements in or relating to housing arrangements for cooling electrical equipment
Inventor: JOHNSON DAVID PEMBERTON
IPC: H01F27/18
Filed: 1965-04-09
Abstract: 1,137,001. Cooling electrical equipment. PLESSEY CO. Ltd. 6 April, 1966 [9 April, 1965], No. 15310/65. Headings F4H and F4U. Apparatus for cooling electrical equipment 11 comprises a housing 10 partly filled with a coolant liquid, a heat exchanger 13 for removing heat from the coolant vapour and a non-return pressure relief valve 9 connected to the housing at a point above the heat exchanger. In-leaking air tends to accumulate in the space 14 above the heat exchanger and any excess is purged through valve 9. In a modification (Fig. 3, not shown), the upper wall of the housing is finned to constitute the heat exchanger (13), the valve (9) is located above the housing and connected thereto by four conduits (18), and a flexible diaphragm (15) subjected to atmospheric pressure on its underside is provided at the bottom of the housing. The diaphragm maintains the desired internal pressure by reducing the volume of the housing when the internal pressure tends to fall below ambient or when the coolant volume decreases at low temperature.
Patent GB-303325-A (GB)
Title: Improvements in combination washers and sterilizers for dishes and like articles
IPC: A47L15/16
Filed: 1928-05-24
Abstract: 303,325. Kraeft, P. F. May 24, 1928. Plates and the like, washing.-A combination washer and sterilizer for dishes and like articles is comprised in a single apparatus employing a single lever to initiate and carry out washing, rinsing, and sterilizing, and to hold the cover of the machine in closed position so that it cannot be raised accidentally during these operations. Thus a lever 32, Figs. 4 and 5, swung to the extreme right closes the circuit to a motor 4 driving a pump 10 to force water upwards into a distributor box 9 from which it falls in a spray over dishes. When the lever 32 is in this position, a valve 26, Fig. 3, closes both water and steam inlet pipes 30, 31. Previous to this operation, it is necessary to move the lever to open communication between water pipe 30 and pipes 30 and pipes 27, 28 to fill the machine to the desired level. The valve is then swung over. An overflow pipe 6 regulates the levet, but the pipe can be removed to drain the machine. After washing, the lever is turned to allow water in pipe 30 to flow through pipes 27, 28 and nozzles 29 to rinse the dishes &c. The position of the valves is shown in Fig. 3. In this position, the lever is moved from a cam 36, Fig. 6, and the motor circuit is opened to stop passage of current. After rinsing, the lever is turned to close the water inlet and open steam to pipes 27, 28 so as to sterilize, the dishes &c. After sterilizing, the lever 32 is swung completely to the left, Fig. 5, so that a recess 40 in the disc 39 of the lever will register with a roller 25 and the cover will swing to the open position, the valve mean. time cutting off water and steam.
Patent GB-258323-A (GB)
Title: Improvements in and in connection with variable electric condensers
IPC: H01G5/38
Filed: 1925-06-13
Abstract: 258,323. Rickets, W. J. June 13, 1925. Condensers of the kind wherein the relation between the angle turned through by the moving vanes and the frequency of the circuit in which the condenser is connected is a linear one, have the moving plates A of scythe shape, the outer edge a being circular and concentric with the axis of rotation, and the inner edge a<1> being concave according to the equation rv<2>=r<2>- 4K/#3 when rv is the radius of the edge a', r is the radius of the edge a, K is a constant, and # the angle turned through. To get a truly linear relation, the minimum capacity is capable of modification by one or more vernier vanes D covering parts of the fixed vanes B which are not covered by the moving vanes. This minimum capacity together with the self capacity of the interchangeable or plug-in coil C forms the minimum capacity of the system, which thus may be brought up to a given fixed value. This may alternatively be done by addition of a further fixed or variable condenser c. The moving vanes are shortened so as to have a straight end a<2>, and the capacity thereby lost must equal the mimimum condenser capacity and selfcapacity of the coil, this giving the highest frequency value for any particular coil.
Patent GB-1000737-A (GB)
Title: Apparatus for measuring and recording the speed of a moving object
IPC: G01S13/92
Filed: 1962-04-19
Abstract: 1,000,737. Recording-apparatus. MULTANOVA A.G. April 19, 1962 [April 21, 1961], No. 15410/62. Heading G1J. [Also in Divisions B6, H3 and H4. In apparatus for recording the speed of a moving object and utilizing waves reflected thereby, a writing instrument is displaceable through a prescribed path of travel to mark an exchangeable data sheet to indicate the speed of the object, drive means are operatively connected to the writing instrument, variable voltage supply means cooperates with the writing instrument to supply a voltage which is a function of the displacement of the writing instrument, and an electric circuit, coupled to the voltage supply means and the drive means, includes means producing an electric signal indicative of the object's speed, means supplying an electric signal to the drive means to actuate the latter, and means comparing the voltage of the voltage supply means with the speed-indicative signal to arrest displacement of the writing instrument when the voltage and speed-indicative signals are equal. The embodiment utilizes a centimetric Doppler radar to produce pulses of repetition frequency proportional to road vehicle speed from a square-wave generator 7 Fig. 1 and an integrator 15 feeds a "speed" voltage E 1  to a capacitor store 17 connected to an indicator 19 and a comparator 42. A ball point pen 62 is driven through an accurate path by a motor 50 and electromagnetic clutch 54, the motor starting and clutch actuation being controlled by a unit 38 fed with signals from a limiter 34 and comparator 42. A D.C. voltage E 2  proportional to pen displacement is generated by potentiometer 56 and fed to the comparator, whereby when E 1  = E 2  motor 50 and clutch 54 are deenergized, and the pen returns, still marking card 70, Fig. 2, by spring 64. The pen may carry a heater to ensure clear recording in cold weather. A frequency divider 12 is provided to double scale 74, Fig. 3 (not shown) and the card may be photographed, Fig. 4 (not shown). A preset voltage is fed to limiter 34 from a unit 36 so that only speeds above a set value are recorded, e.g. 30 m.p.h. see Fig. 2. A separate card Fig. 3 (not shown) is used for "doubled" speeds and circuit controls are actuated dependent on the position of cut out 79, Fig. 4 (not shown); the second card may be of a different colour. A variable voltage source 30 is provided for testing purposes. Rectifier 22 output is used also to inhibit recording of unreliable signals. The record cards may include a form 72a.
Patent GB-352642-A (GB)
Title: Improvements in or relating to closures for jars
IPC: B65D45/32
Filed: 1930-05-20
Abstract: 352,642. Closures for jars. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.-(Phoenix-Hermetic Co. ; 2444, West 16th Street, Chicago, U.S.A.) May 20, 1930, No. 15427. [Class 125 (iii).] Relates to jar closures of the type secured by an overlying sealing band which engages a ledge on the jar and the periphery of the cap. According to the invention the cap has a flange 5 and a recess 6 for the reception of the overlying part of the band 8 so that an uniform pressure can be applied to the cap and band during the sealing operation. Plastic sealing material is inserted in the channel 12 before the cap is fitted to the jar. An annular bead 10 forms the inner wall of the channel 12.
Patent GB-1043328-A (GB)
Title: Improvements in or relating to a method and a plant for manufacturing electric cables
IPC: H01B13/30
Filed: 1965-04-13
Abstract: 1,043,328. Cables. PIRELLI S.p.A. April 13, 1965 [April 21, 1964; April 22, 1964], No. 15628/65. Heading H1A. The required length of a stranded conductor 2 formed in stranding machine 1 is collected in a skein in one of a pair of storage zones 4, 4<SP>1</SP> by means of jockeys 3, 3<SP>1</SP> and is removed therefrom also by means of jockeys 3, 3<SP>1</SP> to a taping machine 5 where e.g. paper tapes are helically wound on. The insulated conductor core 6 is wound in untwisted coils by means of jockeys 3a, 3<SP>1</SP>a into one of a pair of tanks 7, 7<SP>1</SP> which rotate about a vertical axis. The closed tank is evacuated and heated and an insulating fluid introduced. The impregnated core 6<SP>1</SP> is withdrawn via jockeys 3a, 3<SP>1</SP>a by rotation of the tank in the reverse direction and passed to extruder 8, for example through an oil filled system immersed below the oil surface in the tank or by the means described in Specifications 827,410 and 846,334, for application of a metal, e.g. lead or aluminium, sheath. The sheathed core 9 is wound in a helix on platform 10, rotatable about a vertical axis, by means of jockey 3b, and is removed therefrom by reversing the rotation for conveyance to extruder 11 where a a sheath of plastics material, e.g. polyethylene or PVC, is applied. The so treated core 12 is collected in a skein in storage zone 13 by means of jockey 3c, and in due course is transferred via jockey 3c to armouring machine 14 for application of protective metal tapings, wire reinforcements, jute and tar &c. The finished cable 15 is collected in a skein in one of the storage zones 16, 16<SP>1</SP> and eventually loaded on to cable laying ship 18. The various parts of the cable manufacturing plant are illustrated in detail by Figs. 2-10 (not shown). In modifications part of the plastics sheath may be applied before the metal sheath, and a multi-core cable may be manufactured by cutting the stranded conductor wound with tape to a number of lengths which are combined, e.g. as illustrated by Figs. 11-13 (not shown), impregnated and subsequently treated in the same way as the single core.
Patent GB-529285-A (GB)
Title: Improvements in atomizers
IPC: B05B11/06
Filed: 1939-05-26
Abstract: 529,285. Spray-producers. BARDIN, G. May 26, 1939, No. 15689. Convention date, March 4. [Class 69 (iii)] An atomizer comprises a hemispherical elastic bulb 1 attached to a sprayer head made of moulded material in which is a duct conducting compressed air to an atomizing opening and a dip tube communicating with the air duct by which liquid is sucked up from a bottle to which the head may be attached. Fig. 1 shows a form in which the tube 6 communicates directly with the air duct 11. In the form shown in Fig. 2 the head carries a removable jet 17 communicating with the dip tube 23 through a passage 20 and projecting into the duct 24 at the spray orifice. The jet is held airtight in the head by a shoulder 19 and elastic packing 20 engaged by a screw 21. A vent may be provided in the head for admitting air to the bottle and the dip tube may be provided with a ball valve.
Patent GB-496294-A (GB)
Title: Improvements in or relating to processes for the manufacture of hydrides of the alkali earth metals
IPC: C01B6/04
Filed: 1937-06-07
Abstract: Alkaline earth metal hydrides are obtained by heating an anhydrous alkaline earth metal chloride in hydrogen, and ammonia or the vapour of a metal (such as zinc) that forms an easily volatile chloride to an elevated temperature not exceeding 1500 DEG  C.  Carbonaceous material such as carbon of low ash content may be admixed with the chloride to facilitate the reaction.  Calcium chloride may be heated in hydrogen and ammonia to a temperature of about 1200 DEG  C.  If the calcium chloride is admixed with some sodium chloride, the necessary temperature is lowered to 900 DEG  C. Calcium chloride may be heated in hydrogen and zinc vapours to a temperature of 800-900 DEG  C.  Barium and strontium hydrides may be similarly prepared. Specification 496,295 is referred to.