baber/WOPTO huggingface dataset:
Patent GB-982297-A (GB)
Title: Improvements in or relating to valve a.c. amplifiers and oscillators
IPC: H03B5/04
Filed: 1961-04-18
Abstract: 982,297. Valve amplifier and oscillator supply circuits. TELEFUNKEN PATENTVERWERTUNGS-G.m.b.H. April 18, 1961 [April 26, 1960], No. 13944/61. Headings H3F and H3W. In a valve amplifier or oscillator having a cathode resistor so large that it over compensates for fluctuations in the anode supply voltage, a compensating voltage proportional to the supply voltage is applied to the grid to maintain the mutual conduction of the valve constant with fluctuations in the supply voltage. In Fig. 5 a stabilized voltage, represented by a battery, is connected by potentiometer P to a poteritiometer between anode supply voltage U B  and earth. The wiper of potentiometer P feeds the grid of a triode which has a cathode resistor R K  dimensioned so that the voltage U K  is much greater than the voltage required for normal biasing purposes, the normal bias U gk  being the difference between Ugm and Uk. The voltage Ugm consists of a stable voltage UAm with a fraction of the varying anode supply voltage superimposed on it. The potentiometer P is adjusted so that notwithstanding variations in anode supply voltage and heater voltage the anode current increases so that the mutual conduction of the valve remains constant. The power drain from the stabilized voltage source is small so that in multivalve arrangements it may be used to supply several biasing arrangements. The basic circuit may be applied to an oscillator (Figs. 2 and 6, not shown) or an amplifier (Fig. 7, not shown).
Patent GB-111683-A (GB)
Title: Improvements in the Reeds of Weaving Looms.
IPC: D03D49/62
Filed: 1916-10-04
Abstract: 111,683. Pneumatic Loom Syndicate, and Fickstone, M. T. Oct. 4, 1916. Reeds; shuttle-races. -In a loom in which the shuttle is operated pneumatically, the reed is adapted to act as a shuttle-race and to guide the shuttle positively in crescent-shaped holes formed centrally in reed plates so that it is prevented from escaping therefrom otherwise than longitudinally. As shown, the reed of a vertical loom comprises a number of metal plates B with central crescentshaped holes and with dovetailed ends B<2> fitting in grooves C' in rails C. The distance between the horns B' is less than the diameter of the tubular shuttle A. Specifications 4507/09 and 14758/11 are referred to.
Patent GB-493432-A (GB)
Title: Flexible transmission couplings
IPC: F16D3/68
Filed: 1938-05-12
Abstract: 493,432. Universal joints. HARDY, SPICER, & CO., Ltd., and HARDY, J. L. May 12, 1938, No. 14155. [Class 80 (ii)] In a universal joint of the kind comprising axially arranged rubber bushings 16, carried by a coupling member and secured to bolts (not shown), carried alternately by driving and driven yokes, the bushings are secured in housings 19, which are detachably secured together as by bolts 24 to form the coupling member, from which any of the individual rubber units may be easily detached. The housings 19 are formed of two separate steel strips bent to part-tubular shape and welded together at their abutting ends to form lugs receiving the bolts 24. The rubber bushings 16 are vulcanized to the housings 19 and to tubular pins 17 which receive the driving or driven bolts, and the housings 19 may serve as the vulcanizing mould. An internal spacing- block 26, shaped to fit inside the assembled housings may be provided, and may be retained in position by shoulders or circlips 27. The end faces of the rubber bushings are grooved as shown.
Patent GB-742198-A (GB)
Title: Improved bicycle alternator
IPC: H02K21/38
Filed: 1953-05-20
Abstract: 742,198. Machines with permanent magnets. ALLEC, G., and MOLLET, L. May 20, 1953 [May 30, 1952], No. 14232/53. Class 35. A bicycle hub alternator comprises a rotor formed by the hollow cylindrical hub a of the bicycle wheel and whose bore is internally toothed along its whole length, and a stator which includes, coaxially mounted on the bicycle axle e, two assemblies each comprising a cylindrical permanent magnet a1, a2 magnetized in the direction of the wheel axis, a mild steel ring c1, c2 substantially encircling its respective magnet, a coil i1, i2 encircling its respective ring, and two pole plates b1, b2, one at each end of their respective magnet and having teeth disposed radially around the peripheries thereof and facing the rotor teeth. In operation, variation of flux caused by movement of the rotor teeth past the pole plate teeth induces an alternating voltage in each coil; the two coils are wound in opposite directions and are connected in series with each other, one, i2, being frame earthed and the other, i1, being connected through leads j, m and possibly a capacitor, not shown, to the bicycle lamps, not shown. The rings c1, c2 each have an axial slot to prevent flow of induced currents and are spaced from the pole plates, e.g. by being located by the heads of rivets d by which the pole plate laminations are clamped together. The two assemblies are clamped against a shoulder of the non-magnetic axle e by a nut f and are separated by a magnetic spacer g. In each assembly the pole plate teeth at the two ends thereof register with one another, but those of one assembly register with the teeth spaces of the other. The magnets are magnetized when the complete stator is assembled.
Patent GB-396517-A (GB)
Title: Conversion of hydrocarbon oils
Filed: 1932-05-19
Abstract: <PICT:0396517/III/1> Crude oils are converted into oils of low boiling-point by cracking a condensate formed as reflux in a fractionating tower 6 by passing it through pipes 26, 28 and the inner coil 10 of a furnace 1 to reaction towers 2, 3 maintained under pressure from which the liquid products are led off without accumulation while the vapours pass through a line 35 to the outer coil 11 of the furnace 1 where they are heated to 1000 DEG  F. and then passed through a line 40 to a second reaction zone 4 from which also the liquid products are removed as quickly as they are formed and where the cracked products are mixed with the crude stock supplied through lines 15, 22.  The vapours formed pass through a pipe 25 to a fractionating tower 6 where they are fractionated to give a final product which is passed through coolers 7, 8 to a receiver 9, and a condensate which collects at the bottom of the tower and is used as the cracking stock.  Part of this condensate may be supplied to the tower 4 through a pipe 29.  The liquid products removed from the towers 2, 3, 4 through lines 32, 33, 34, 42 are flashed in a tower 5 and the vapours produced are passed through a cooler 51 and pipe 54 into the tower 6.  The crude oil is preferably preheated in coils 16, 17.
Patent GB-1254924-A (GB)
Title: New polyester fancy yarn and its production
Inventor: BUZANO MICHEL
IPC: D01D5/20
Filed: 1969-03-18
Abstract: 1,254,924. Polyester yarn. SOC. RHODIACETA. 18 March, 1969 [18 March, 1968], No. 14297/69. Heading B5B. [Also in Division D1] A multifilament yarn of polyester material in which each filament has on the microscopic scale, alternating thick and thin parts is further characterized in that the thick parts, on the microscopic scale, comprise alternating zones of at least two different average diameters, the zones of smallest diameter having the highest crystallinity and molecular orientation and vice versa. The thin parts, on the microscopic scale, comprise either the same alternations of zones and the same differences of structural characteristics to a much lower degree, or are substantially uniform in diameter. The thick parts have a non-spiral 3-dimensional crimp and are bulked. The least crystalline zones of the thick parts have a crystallinity index below 20%. A process for producing the yarn comprises partially stretching at a stretch ratio of 1À5-3À5 a multifilament yarn of a polyester material in contact with a crack-promoting agent, e.g. ethanol, heat treating the yarn in a relaxed state, and continuously or intermittently varying the degree of relaxation during such heat treatment and/or the degree of stretching during the initial or a supplementary partial stretching treatment. In one embodiment of the process, a supplementary partial stretch in which the degree of stretch varies precedes a heat treatment in a relaxed state. In an alternative embodiment, the yarn may be stretched to a varying degree while in contact with a crack-promoting agent. The polyester material is preferably polyethylene terephthalate.  Apparatus for carrying out the method comprises means e.g. rollers 5, 6 for feeding yarn 3 to a bath 7 of crack-producing agent, means e.g. draw rollers 8, 9 for stretching the yarn in the bath, means 10 for heating the yarns, means e.g. rollers 11, 12 for relaxing the yarn while it is heated, means e.g. reciprocating finger 15 for intermittently or continuously changing the degree of relaxation during such heat treatment and/or the degree of stretch during the initial or a supplementary stretching treatment, and means 16 for winding up the yarn produced. The finger 15 may form part of, or be carried or operated by, a cam driven by a motor. In alternative embodiments of the apparatus, the finger 15 is disposed between the relaxing rollers 11, 12 and the wind up means 16, or between the feed rollers 8, 9 and the heater 10.
Patent GB-419734-A (GB)
Title: Improvements in or relating to the control of electrically propelled vehicles
IPC: H02P3/14
Filed: 1933-05-17
Abstract: 419,734. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and CANSDALE, J. H., 40, Murray Road, Rugby. May 17, 1933, No. 14299. [Class 38 (iii).] In a control system for a traction motor employed regeneratively for braking, a contactor energized by the voltage across the series field winding of the motor operates to disconnect the motor from the supply when the regenerated current has fallen to a predetermined low value. Line contactors 1, 20, and series resistance contactors 2-5, having operating windings 1a, 20a, and 2a-5a, respectively, are controlled by contacts 21-25 on a master controller M ; shunt field resistance contactors 6-12 are similarly controlled by normally closed contacts 26-32 on the controller. The circuit of windings 1a, 20a includes the contacts 14 of a contactor 14a connected across the series field Y of the motor, auxiliary contacts 4x on resistance contactor 4, and normally closed auxiliary contacts 5y on resistance contactor 5. In starting, the energizing circuit of the line contactors is completed through contacts 5y, and subsequently through contacts 4x and 14, contacts 5y being opened when contacts 5 close. On returning the controller towards the " off " position for braking, contacts 5y remain open owing to the closure of maintainng contacts 5x on contactor 5, and after contacts 24 are opened, the circuit of windings 1a, 20a is maintained only by contacts 14, which are opened when the regenerated current falls to a low value, so that the motor is then disconnected. The controller must then be returned to the " off " position, to close contacts 5y in order to restart the motor.
Patent GB-662802-A (GB)
Title: Improved method of and apparatus for establishing and renewing a liquid junction between two electrode vessels
Inventor: SMITH GEORGE STANLEY
IPC: G01N27/30
Filed: 1949-05-27
Abstract: 662,802. Electrolytic cells for measurement of electro - chemical properties. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 27, 1949, No. 14306/49. Class 37. In apparatus for determining electro-chemical potentials, for example pH or polarographic apparatus, the liquid junction connecting two half cells or electrode vessels is disposed within a thermostatic bath or zone and the controls such as taps and liquid levelling devices are situated outside said bath or zone. In Fig. 1, the liquid junction is formed in wide bore limb 12 of an inverted U-tube and connects a calomel electrode 1 with a second electrode (not shown) to constitute a cell immersed in a thermostatic bath. Fig. 2 shows a polarographic cell comprising a liquid junction, as Fig. 1, in conj unction with a calomel electrode and mercury dropping electrode and immersed in a thermostatic bath 31. KCl solution from the delivery funnel is permitted to flow and bulb 3 subsequently pressed to produce a level of liquid just below the bend in tube 12, as shown. Air is removed from the dropping electrode vessel 29 and connecting tubes by passing nitrogen through tap 20 and out through taps 6, 13 and 18. The test solution is placed in the delivery funnel 17 and de-oxygenated by passing nitrogen through the empty vessel 29. The latter is then allowed to fill by turning tap 20 to atmosphere; tap 20 is then closed. With test solution delivery tap 18 still open, tap 6 is cautiously opened and the electrolyte allowed to pass along tube 11 and around the U-tube bend and flow gently on top of the KCl solution thus forming the liquid junction; tap 6 is then closed. A relatively narrow liquid junction tube (e.g. semi-capillary bore) may be used instead of the wide bore tube shown. Fig. 2 is an all-glass form of polarographic cell with the dropping mercury capillary 27 fused-in. The electrode vessels and the liquid junction tube may be contained in separate thermostat baths. The procedure for emptying and washing the cell is outlined. Specification 661,689 is referred to.
Patent GB-401377-A (GB)
Title: Improvements relating to electric trolley bus brakes
IPC: B60K1/02
Filed: 1932-05-20
Abstract: 401,377. Control of D.C. motors; controllers. ELECTRO-MECHANICAL BRAKE CO., Ltd. and CADBURY, G. N., Eagle Works, West Bromwich. May 20, 1932, No. 14344. [Class 38 (iii).] Brake devices.-An electric trolley bus is provided with electromagnetic brakes e on the non-driven road wheels b supplied with current from the motor c driving the rear wheels a, when the motor is exerting a regenerative or rhestatic braking action and while the braking is still powerful additional brakes are prevented from being applied. In the example shown, fluid pressure brakes h on all the wheels are prevented from coming into operation by a valve l operated by a solenoid m supplied with current from the motor c. The electric and fluid pressure brakes are controlled by a pedal k, which applies the electric brakes first Manual, hydraulic and electric brakes, may be used in place of the fluid-pressure brakes, which may be provided on the rear wheels only.
Patent GB-1058264-A (GB)
Title: Improvements in or relating to steam turbine circuits
IPC: F01K7/44
Filed: 1964-04-07
Abstract: 1,058,264. Heating feedwater. KAWASAKI JUKOGYO KABUSHIKI KAISHA. April 7, 1964 [April 10, 1963], No. 14370/64. Heading F4A. [Also in Division F1] In a feedwater heating circuit for a steam power plant having a main turbine 2 and an auxiliary turbine 21 driving a feed pump 8 and wherein feedwater for the boiler 1 supplying steam to both turbines is heated in low pressure heaters 5 . . . 7 and then in high pressure heaters 9, 10 by steam bled from the main turbine, the steam exhausting from the auxiliary turbine 21 is also used to heat the feedwater, part of its heat being exchanged in a high pressure, non-condensing heater 23 interposed between heaters 9 and 10 and the remainder in the lowpressure heater 7 wherein the exhaust steam condenses.
Patent GB-350681-A (GB)
Title: Improvements relating to metal window sash frames
IPC: E06B3/99
Filed: 1930-05-10
Abstract: 350,681. Metal sash frames. HELLIWELL & CO., Ltd. and HOLTON, J. W., Birds Royd, Brighouse, Yorkshire. May 10, 1930, No. 14429. [Classes 20 (ii) and 20 (iii).] Two crossing metal sash bars A; B are joined by piercing and slitting the web of' one bar A to make an opening for inserting the second bar B; as described in Specification 180,722, [Class 20 (iii), Doors &c.], and by forming corresponding mitres on the beads or heads a, b of both bars, which when pressed together form an interlocking joint.
Patent GB-686366-A (GB)
Title: An improved carrier for golf clubs
IPC: A63B55/60
Filed: 1951-06-18
Abstract: 686,366. Golf-club carriers. SYMES, W. June 18, 1951, No. 14451/51. Class 108 (i). A golf-club carrier comprises a container 1 having end members 2, 3 secured by four longitudinal corner members, the member 2 having a number of apertures 4 for the reception of individual clubs which are prevented from rattling against the edges of the apertures by rubber tongues 6. An inner container 7 is provided for the reception of auxiliary equipment. The carrier is collapsed by sliding the propelling handle member 21 downwardly thus pushing on the link 20 and rotating the U-shaped axle 15 and the struts 16, 17 about the pivot-pins 18, 19.
Patent GB-223173-A (GB)
Title: A toy clockwork fan
IPC: F04D25/10
Filed: 1924-06-16
Abstract: 223,173. Bauer, N. June 16, 1924. Model machines.-A toy clockwork fan comprises a casing c rotatably mounted on a support a, the casing being oscillated about a vertical axis by cranking one of the arbors p of the clockwork movement, the crank q engaging a fixed guide s. The fan i is mounted on the spindle h and is protected by a ring m supported on arms o.
Patent GB-694095-A (GB)
Title: Improvements in or relating to motor road vehicles
Inventor: HOBBS DUDLEY EDWIN
IPC: B62D35/00
Filed: 1949-06-01
Abstract: 694,095. Vehicle bodies. BRISTOL AEROPLANE CO., Ltd. Feb. 7, 1950 [June 1, 1949], No. 14746/49. Class 108 (i). [Also in Group XXXI] A vehicle comprises a floor unit 28 having its edges 29 suitably attached to the body unit 45 and an inverted channel-section frame 46. The arched portion 50 is closed by plates 53 removably secured to the floor unit. The body and floor units may have walls made from a sandwich material, comprising thin sheets permanently attached to a light weight fibrous core. The sandwich may be impregnated with a synthetic coloured resin and cured to obviate subsequent painting of the body. The floor and body units may be attached by the application of heat and pressure when they are of the sandwich construction. Alternatively they may be preformed with attachment bolts and brackets.
Patent GB-610518-A (GB)
Title: Improved suspension arrangement for vehicles having rigid axles
IPC: B60G9/00
Filed: 1945-06-11
Abstract: 610,518. Motor-vehicle axles. ELECTROTUBE-SOLESMES. June 11, 1945, No. 14755. Convention date, Sept. 1, 1944. [Class 79 (iv)] [Also in Group XXXII] A vehicle is sprung on a rigid axle so that the suspension takes vertical thrusts only, longitudinal thrusts being taken by a pair of radius rods located on either side of the vehicle outside the chassis frame, and tranverse thrusts being taken by a transverse rod articulated at one end to the axle and at its other end to the frame, the longitudinal radius rods being attached to the frame at points level with the wheel axle. The longitudinal radius rods may each comprise a pair of rods in the form of a V articulated to the chassis at its apex and to the axle at the ends of its two arms, or each pair of rods may be replaced by a V- shaped member or by a flexible bar rigidly attached to the axle and to the frame. The suspension means work in compression and may comprise helical springs, rubber blocks, pneumatic or hydro-pneumatic devices and are interposed directly between the rigid axle and the chassis, or torsion bar springing may be used. The chassis frame 1, Figs. 1-3, is supported on the axle 6 by brackets 2, 3 and elastic suspension members 4, 5 working in compression. Longitudinal thrusts are taken by the V-shaped members 9, 10 located outside the chassis and pivotal thereto at 15, the ends of the arms 9, 10 being articulated at 13, 14 to the end of levers 7, 8 fast with the ends of the axle. Transverse thrusts are taken by rod 19 pivoted at one end 20 to the axle 6 and at its other end 22 to the chassis frame. Specifications 12978/08 and 14953/08, [both in Class 79], are referred to.
Patent GB-910492-A (GB)
Title: Improvements in interpolation devices
Inventor: LECROART HENRI
IPC: G06G7/36
Filed: 1961-04-24
Abstract: 910,492. Electric analogue calculating. COMMISSARIAT A. L'ENERGIE ATOMIQUE. April 24, 1961 [May 24, 1960], No. 14770/61. Class 37. An automatic and continuous interpolation device for giving the value of a function of one or two variables between values of the function known for discrete values of these variables, is characterized in that each of the known values of the function is represented by the alternating component of the potential of a flat conductor element shaped as a parallelogram, all of the conductor elements being of the same size and shape, disposed adjacent to one another, separated by insulated intervals of small width and constituting a surface covered by a sheet of dielectric material. The interpolated value of the function is given by the alternating component of the potential of a flat conductor probe movable along the dielectric sheet and of the same shape and dimensions as the conductor elements. Four separated square conductor elements 1, 2, 3, 4 (Fig. 1), have probe 5 located above them and separated from them by a thin dielectric sheet. If alternating potentials of the same frequency but different amplitude V 1 , V 2 , V 3 , V 4  are applied to these elements representing different discrete values of a given function, then the amplitude of the alternating potential appearing on the probe will be where S 1 , S 2 , S 3 , S 4  are the respective areas of the four elements covered by the probe and S 1 +S 2 +S 3 +S 4  = S. The formula is applicable to amplitude when the alternating potentials are in phase, and vectorially in other cases. The number of square elements may be as large as necessary and the elements may be formed from a sheet suitable for printed circuit work. In an application to map the equipotential curves of a two-dimensional resistor network, the junction points as at 9 (Fig. 4), of the network are connected to appropriate conductor elements. Between the elements and the probe is fitted a sheet of paper 10, across which the probe is arranged to travel, moved by a mechanical device (not shown). The probe has a hole 12 at its centre, through which plotting may be performed. Each time the potential of the probe equals a chosen value it is arranged by means of the high input impedance measurement system 11 that a point is plotted on the paper, and a line traced through the plotted points will indicate the equipotential curve. The network may be used for the calculationof a function of two variables and is energized by the alternating current generator 14.
Patent GB-1307037-A (GB)
Title: Method and apparatus for making a pneumatic tyre
IPC: B29D30/06
Filed: 1971-05-13
Abstract: 1307037 Moulding tyres FIRESTONE TIRE & RUBBER CO 13 May 1971 [20 May 1970] 14790/71 Heading B5A A pneumatic tyre is made by separately forming two tyre sidewalls, placing them apart in a centrifugal casting mould and centrifugally casting the tyre tread portion in the space between the sidewalls to secure them together. In Fig. 1 the sidewalls 59 are centrifugally cast simultaneously in two centrifugal casting moulds 34 mounted on interengaging shafts 24, 25, each mould comprising opposed shells 56, 57 interconnected by bolts 60 and spacers 63 and supplied with liquid casting material, e.g. a curable resin via passages 27. After casting the sidewalls the two moulds are disconnected and then spaced apart by air cylinders 28 which move the left hand mould to the left. The shells 57 are removed and a flange 68, Fig. 4, is positioned by bolts 60 to provide a space 72 between the sidewalls to which a casting material is fed to provide a centrifugally cast strip 75 integral with the sidewalls.